diff options
174 files changed, 4281 insertions, 3901 deletions
diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt index d0f22fac55da..3d2d0c29f027 100644 --- a/Documentation/feature-removal-schedule.txt +++ b/Documentation/feature-removal-schedule.txt @@ -250,6 +250,9 @@ What (Why): - xt_mark match revision 0 (superseded by xt_mark match revision 1) + - xt_recent: the old ipt_recent proc dir + (superseded by /proc/net/xt_recent) + When: January 2009 or Linux 2.7.0, whichever comes first Why: Superseded by newer revisions or modules Who: Jan Engelhardt <jengelh@computergmbh.de> diff --git a/Documentation/networking/tproxy.txt b/Documentation/networking/tproxy.txt new file mode 100644 index 000000000000..7b5996d9357e --- /dev/null +++ b/Documentation/networking/tproxy.txt @@ -0,0 +1,85 @@ +Transparent proxy support +========================= + +This feature adds Linux 2.2-like transparent proxy support to current kernels. +To use it, enable NETFILTER_TPROXY, the socket match and the TPROXY target in +your kernel config. You will need policy routing too, so be sure to enable that +as well. + + +1. Making non-local sockets work +================================ + +The idea is that you identify packets with destination address matching a local +socket on your box, set the packet mark to a certain value, and then match on that +value using policy routing to have those packets delivered locally: + +# iptables -t mangle -N DIVERT +# iptables -t mangle -A PREROUTING -p tcp -m socket -j DIVERT +# iptables -t mangle -A DIVERT -j MARK --set-mark 1 +# iptables -t mangle -A DIVERT -j ACCEPT + +# ip rule add fwmark 1 lookup 100 +# ip route add local 0.0.0.0/0 dev lo table 100 + +Because of certain restrictions in the IPv4 routing output code you'll have to +modify your application to allow it to send datagrams _from_ non-local IP +addresses. All you have to do is enable the (SOL_IP, IP_TRANSPARENT) socket +option before calling bind: + +fd = socket(AF_INET, SOCK_STREAM, 0); +/* - 8< -*/ +int value = 1; +setsockopt(fd, SOL_IP, IP_TRANSPARENT, &value, sizeof(value)); +/* - 8< -*/ +name.sin_family = AF_INET; +name.sin_port = htons(0xCAFE); +name.sin_addr.s_addr = htonl(0xDEADBEEF); +bind(fd, &name, sizeof(name)); + +A trivial patch for netcat is available here: +http://people.netfilter.org/hidden/tproxy/netcat-ip_transparent-support.patch + + +2. Redirecting traffic +====================== + +Transparent proxying often involves "intercepting" traffic on a router. This is +usually done with the iptables REDIRECT target; however, there are serious +limitations of that method. One of the major issues is that it actually +modifies the packets to change the destination address -- which might not be +acceptable in certain situations. (Think of proxying UDP for example: you won't +be able to find out the original destination address. Even in case of TCP +getting the original destination address is racy.) + +The 'TPROXY' target provides similar functionality without relying on NAT. Simply +add rules like this to the iptables ruleset above: + +# iptables -t mangle -A PREROUTING -p tcp --dport 80 -j TPROXY \ + --tproxy-mark 0x1/0x1 --on-port 50080 + +Note that for this to work you'll have to modify the proxy to enable (SOL_IP, +IP_TRANSPARENT) for the listening socket. + + +3. Iptables extensions +====================== + +To use tproxy you'll need to have the 'socket' and 'TPROXY' modules +compiled for iptables. A patched version of iptables is available +here: http://git.balabit.hu/?p=bazsi/iptables-tproxy.git + + +4. Application support +====================== + +4.1. Squid +---------- + +Squid 3.HEAD has support built-in. To use it, pass +'--enable-linux-netfilter' to configure and set the 'tproxy' option on +the HTTP listener you redirect traffic to with the TPROXY iptables +target. + +For more information please consult the following page on the Squid +wiki: http://wiki.squid-cache.org/Features/Tproxy4 diff --git a/include/linux/netfilter.h b/include/linux/netfilter.h index 0c5eb7ed8b3f..48cfe51bfddc 100644 --- a/include/linux/netfilter.h +++ b/include/linux/netfilter.h @@ -5,13 +5,11 @@ #include <linux/init.h> #include <linux/skbuff.h> #include <linux/net.h> -#include <linux/netdevice.h> #include <linux/if.h> #include <linux/in.h> #include <linux/in6.h> #include <linux/wait.h> #include <linux/list.h> -#include <net/net_namespace.h> #endif #include <linux/types.h> #include <linux/compiler.h> @@ -52,6 +50,16 @@ enum nf_inet_hooks { NF_INET_NUMHOOKS }; +enum { + NFPROTO_UNSPEC = 0, + NFPROTO_IPV4 = 2, + NFPROTO_ARP = 3, + NFPROTO_BRIDGE = 7, + NFPROTO_IPV6 = 10, + NFPROTO_DECNET = 12, + NFPROTO_NUMPROTO, +}; + union nf_inet_addr { __u32 all[4]; __be32 ip; @@ -92,8 +100,8 @@ struct nf_hook_ops /* User fills in from here down. */ nf_hookfn *hook; struct module *owner; - int pf; - int hooknum; + u_int8_t pf; + unsigned int hooknum; /* Hooks are ordered in ascending priority. */ int priority; }; @@ -102,7 +110,7 @@ struct nf_sockopt_ops { struct list_head list; - int pf; + u_int8_t pf; /* Non-inclusive ranges: use 0/0/NULL to never get called. */ int set_optmin; @@ -138,9 +146,9 @@ extern struct ctl_path nf_net_netfilter_sysctl_path[]; extern struct ctl_path nf_net_ipv4_netfilter_sysctl_path[]; #endif /* CONFIG_SYSCTL */ -extern struct list_head nf_hooks[NPROTO][NF_MAX_HOOKS]; +extern struct list_head nf_hooks[NFPROTO_NUMPROTO][NF_MAX_HOOKS]; -int nf_hook_slow(int pf, unsigned int hook, struct sk_buff *skb, +int nf_hook_slow(u_int8_t pf, unsigned int hook, struct sk_buff *skb, struct net_device *indev, struct net_device *outdev, int (*okfn)(struct sk_buff *), int thresh); @@ -151,7 +159,7 @@ int nf_hook_slow(int pf, unsigned int hook, struct sk_buff *skb, * okfn must be invoked by the caller in this case. Any other return * value indicates the packet has been consumed by the hook. */ -static inline int nf_hook_thresh(int pf, unsigned int hook, +static inline int nf_hook_thresh(u_int8_t pf, unsigned int hook, struct sk_buff *skb, struct net_device *indev, struct net_device *outdev, @@ -167,7 +175,7 @@ static inline int nf_hook_thresh(int pf, unsigned int hook, return nf_hook_slow(pf, hook, skb, indev, outdev, okfn, thresh); } -static inline int nf_hook(int pf, unsigned int hook, struct sk_buff *skb, +static inline int nf_hook(u_int8_t pf, unsigned int hook, struct sk_buff *skb, struct net_device *indev, struct net_device *outdev, int (*okfn)(struct sk_buff *)) { @@ -212,14 +220,14 @@ __ret;}) NF_HOOK_THRESH(pf, hook, skb, indev, outdev, okfn, INT_MIN) /* Call setsockopt() */ -int nf_setsockopt(struct sock *sk, int pf, int optval, char __user *opt, +int nf_setsockopt(struct sock *sk, u_int8_t pf, int optval, char __user *opt, int len); -int nf_getsockopt(struct sock *sk, int pf, int optval, char __user *opt, +int nf_getsockopt(struct sock *sk, u_int8_t pf, int optval, char __user *opt, int *len); -int compat_nf_setsockopt(struct sock *sk, int pf, int optval, +int compat_nf_setsockopt(struct sock *sk, u_int8_t pf, int optval, char __user *opt, int len); -int compat_nf_getsockopt(struct sock *sk, int pf, int optval, +int compat_nf_getsockopt(struct sock *sk, u_int8_t pf, int optval, char __user *opt, int *len); /* Call this before modifying an existing packet: ensures it is @@ -247,7 +255,7 @@ struct nf_afinfo { int route_key_size; }; -extern const struct nf_afinfo *nf_afinfo[NPROTO]; +extern const struct nf_afinfo *nf_afinfo[NFPROTO_NUMPROTO]; static inline const struct nf_afinfo *nf_get_afinfo(unsigned short family) { return rcu_dereference(nf_afinfo[family]); @@ -292,7 +300,7 @@ extern void nf_unregister_afinfo(const struct nf_afinfo *afinfo); extern void (*ip_nat_decode_session)(struct sk_buff *, struct flowi *); static inline void -nf_nat_decode_session(struct sk_buff *skb, struct flowi *fl, int family) +nf_nat_decode_session(struct sk_buff *skb, struct flowi *fl, u_int8_t family) { #ifdef CONFIG_NF_NAT_NEEDED void (*decodefn)(struct sk_buff *, struct flowi *); @@ -315,7 +323,7 @@ extern struct proc_dir_entry *proc_net_netfilter; #else /* !CONFIG_NETFILTER */ #define NF_HOOK(pf, hook, skb, indev, outdev, okfn) (okfn)(skb) #define NF_HOOK_COND(pf, hook, skb, indev, outdev, okfn, cond) (okfn)(skb) -static inline int nf_hook_thresh(int pf, unsigned int hook, +static inline int nf_hook_thresh(u_int8_t pf, unsigned int hook, struct sk_buff *skb, struct net_device *indev, struct net_device *outdev, @@ -324,7 +332,7 @@ static inline int nf_hook_thresh(int pf, unsigned int hook, { return okfn(skb); } -static inline int nf_hook(int pf, unsigned int hook, struct sk_buff *skb, +static inline int nf_hook(u_int8_t pf, unsigned int hook, struct sk_buff *skb, struct net_device *indev, struct net_device *outdev, int (*okfn)(struct sk_buff *)) { @@ -332,7 +340,9 @@ static inline int nf_hook(int pf, unsigned int hook, struct sk_buff *skb, } struct flowi; static inline void -nf_nat_decode_session(struct sk_buff *skb, struct flowi *fl, int family) {} +nf_nat_decode_session(struct sk_buff *skb, struct flowi *fl, u_int8_t family) +{ +} #endif /*CONFIG_NETFILTER*/ #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE) @@ -343,56 +353,5 @@ extern void (*nf_ct_destroy)(struct nf_conntrack *); static inline void nf_ct_attach(struct sk_buff *new, struct sk_buff *skb) {} #endif -static inline struct net *nf_pre_routing_net(const struct net_device *in, - const struct net_device *out) -{ -#ifdef CONFIG_NET_NS - return in->nd_net; -#else - return &init_net; -#endif -} - -static inline struct net *nf_local_in_net(const struct net_device *in, - const struct net_device *out) -{ -#ifdef CONFIG_NET_NS - return in->nd_net; -#else - return &init_net; -#endif -} - -static inline struct net *nf_forward_net(const struct net_device *in, - const struct net_device *out) -{ -#ifdef CONFIG_NET_NS - BUG_ON(in->nd_net != out->nd_net); - return in->nd_net; -#else - return &init_net; -#endif -} - -static inline struct net *nf_local_out_net(const struct net_device *in, - const struct net_device *out) -{ -#ifdef CONFIG_NET_NS - return out->nd_net; -#else - return &init_net; -#endif -} - -static inline struct net *nf_post_routing_net(const struct net_device *in, - const struct net_device *out) -{ -#ifdef CONFIG_NET_NS - return out->nd_net; -#else - return &init_net; -#endif -} - #endif /*__KERNEL__*/ #endif /*__LINUX_NETFILTER_H*/ diff --git a/include/linux/netfilter/Kbuild b/include/linux/netfilter/Kbuild index 3aff513d12c8..5a8af875bce2 100644 --- a/include/linux/netfilter/Kbuild +++ b/include/linux/netfilter/Kbuild @@ -32,6 +32,7 @@ header-y += xt_owner.h header-y += xt_pkttype.h header-y += xt_rateest.h header-y += xt_realm.h +header-y += xt_recent.h header-y += xt_sctp.h header-y += xt_state.h header-y += xt_statistic.h diff --git a/include/linux/netfilter/nf_conntrack_proto_gre.h b/include/linux/netfilter/nf_conntrack_proto_gre.h index 535e4219d2bb..2a10efda17fb 100644 --- a/include/linux/netfilter/nf_conntrack_proto_gre.h +++ b/include/linux/netfilter/nf_conntrack_proto_gre.h @@ -87,7 +87,7 @@ int nf_ct_gre_keymap_add(struct nf_conn *ct, enum ip_conntrack_dir dir, /* delete keymap entries */ void nf_ct_gre_keymap_destroy(struct nf_conn *ct); -extern void nf_ct_gre_keymap_flush(void); +extern void nf_ct_gre_keymap_flush(struct net *net); extern void nf_nat_need_gre(void); #endif /* __KERNEL__ */ diff --git a/include/linux/netfilter/x_tables.h b/include/linux/netfilter/x_tables.h index 2326296b6f25..be41b609c88f 100644 --- a/include/linux/netfilter/x_tables.h +++ b/include/linux/netfilter/x_tables.h @@ -173,6 +173,98 @@ struct xt_counters_info #include <linux/netdevice.h> +/** + * struct xt_match_param - parameters for match extensions' match functions + * + * @in: input netdevice + * @out: output netdevice + * @match: struct xt_match through which this function was invoked + * @matchinfo: per-match data + * @fragoff: packet is a fragment, this is the data offset + * @thoff: position of transport header relative to skb->data + * @hotdrop: drop packet if we had inspection problems + * @family: Actual NFPROTO_* through which the function is invoked + * (helpful when match->family == NFPROTO_UNSPEC) + */ +struct xt_match_param { + const struct net_device *in, *out; + const struct xt_match *match; + const void *matchinfo; + int fragoff; + unsigned int thoff; + bool *hotdrop; + u_int8_t family; +}; + +/** + * struct xt_mtchk_param - parameters for match extensions' + * checkentry functions + * + * @table: table the rule is tried to be inserted into + * @entryinfo: the family-specific rule data + * (struct ipt_ip, ip6t_ip, ebt_entry) + * @match: struct xt_match through which this function was invoked + * @matchinfo: per-match data + * @hook_mask: via which hooks the new rule is reachable + */ +struct xt_mtchk_param { + const char *table; + const void *entryinfo; + const struct xt_match *match; + void *matchinfo; + unsigned int hook_mask; + u_int8_t family; +}; + +/* Match destructor parameters */ +struct xt_mtdtor_param { + const struct xt_match *match; + void *matchinfo; + u_int8_t family; +}; + +/** + * struct xt_target_param - parameters for target extensions' target functions + * + * @hooknum: hook through which this target was invoked + * @target: struct xt_target through which this function was invoked + * @targinfo: per-target data + * + * Other fields see above. + */ +struct xt_target_param { + const struct net_device *in, *out; + unsigned int hooknum; + const struct xt_target *target; + const void *targinfo; + u_int8_t family; +}; + +/** + * struct xt_tgchk_param - parameters for target extensions' + * checkentry functions + * + * @entryinfo: the family-specific rule data + * (struct ipt_entry, ip6t_entry, arpt_entry, ebt_entry) + * + * Other fields see above. + */ +struct xt_tgchk_param { + const char *table; + void *entryinfo; + const struct xt_target *target; + void *targinfo; + unsigned int hook_mask; + u_int8_t family; +}; + +/* Target destructor parameters */ +struct xt_tgdtor_param { + const struct xt_target *target; + void *targinfo; + u_int8_t family; +}; + struct xt_match { struct list_head list; @@ -185,24 +277,13 @@ struct xt_match non-linear skb, using skb_header_pointer and skb_ip_make_writable. */ bool (*match)(const struct sk_buff *skb, - const struct net_device *in, - const struct net_device *out, - const struct xt_match *match, - const void *matchinfo, - int offset, - unsigned int protoff, - bool *hotdrop); + const struct xt_match_param *); /* Called when user tries to insert an entry of this type. */ - /* Should return true or false. */ - bool (*checkentry)(const char *tablename, - const void *ip, - const struct xt_match *match, - void *matchinfo, - unsigned int hook_mask); + bool (*checkentry)(const struct xt_mtchk_param *); /* Called when entry of this type deleted. */ - void (*destroy)(const struct xt_match *match, void *matchinfo); + void (*destroy)(const struct xt_mtdtor_param *); /* Called when userspace align differs from kernel space one */ void (*compat_from_user)(void *dst, void *src); @@ -235,24 +316,16 @@ struct xt_target must now handle non-linear skbs, using skb_copy_bits and skb_ip_make_writable. */ unsigned int (*target)(struct sk_buff *skb, - const struct net_device *in, - const struct net_device *out, - unsigned int hooknum, - const struct xt_target *target, - const void *targinfo); + const struct xt_target_param *); /* Called when user tries to insert an entry of this type: hook_mask is a bitmask of hooks from which it can be called. */ /* Should return true or false. */ - bool (*checkentry)(const char *tablename, - const void *entry, - const struct xt_target *target, - void *targinfo, - unsigned int hook_mask); + bool (*checkentry)(const struct xt_tgchk_param *); /* Called when entry of this type deleted. */ - void (*destroy)(const struct xt_target *target, void *targinfo); + void (*destroy)(const struct xt_tgdtor_param *); /* Called when userspace align differs from kernel space one */ void (*compat_from_user)(void *dst, void *src); @@ -292,7 +365,7 @@ struct xt_table /* Set this to THIS_MODULE if you are a module, otherwise NULL */ struct module *me; - int af; /* address/protocol family */ + u_int8_t af; /* address/protocol family */ }; #include <linux/netfilter_ipv4.h> @@ -328,12 +401,10 @@ extern void xt_unregister_match(struct xt_match *target); extern int xt_register_matches(struct xt_match *match, unsigned int n); extern void xt_unregister_matches(struct xt_match *match, unsigned int n); -extern int xt_check_match(const struct xt_match *match, unsigned short family, - unsigned int size, const char *table, unsigned int hook, - unsigned short proto, int inv_proto); -extern int xt_check_target(const struct xt_target *target, unsigned short family, - unsigned int size, const char *table, unsigned int hook, - unsigned short proto, int inv_proto); +extern int xt_check_match(struct xt_mtchk_param *, + unsigned int size, u_int8_t proto, bool inv_proto); +extern int xt_check_target(struct xt_tgchk_param *, + unsigned int size, u_int8_t proto, bool inv_proto); extern struct xt_table *xt_register_table(struct net *net, struct xt_table *table, @@ -346,19 +417,19 @@ extern struct xt_table_info *xt_replace_table(struct xt_table *table, struct xt_table_info *newinfo, int *error); -extern struct xt_match *xt_find_match(int af, const char *name, u8 revision); -extern struct xt_target *xt_find_target(int af, const char *name, u8 revision); -extern struct xt_target *xt_request_find_target(int af, const char *name, +extern struct xt_match *xt_find_match(u8 af, const char *name, u8 revision); +extern struct xt_target *xt_find_target(u8 af, const char *name, u8 revision); +extern struct xt_target *xt_request_find_target(u8 af, const char *name, u8 revision); -extern int xt_find_revision(int af, const char *name, u8 revision, int target, - int *err); +extern int xt_find_revision(u8 af, const char *name, u8 revision, + int target, int *err); -extern struct xt_table *xt_find_table_lock(struct net *net, int af, +extern struct xt_table *xt_find_table_lock(struct net *net, u_int8_t af, const char *name); extern void xt_table_unlock(struct xt_table *t); -extern int xt_proto_init(struct net *net, int af); -extern void xt_proto_fini(struct net *net, int af); +extern int xt_proto_init(struct net *net, u_int8_t af); +extern void xt_proto_fini(struct net *net, u_int8_t af); extern struct xt_table_info *xt_alloc_table_info(unsigned int size); extern void xt_free_table_info(struct xt_table_info *info); @@ -423,12 +494,12 @@ struct compat_xt_counters_info #define COMPAT_XT_ALIGN(s) (((s) + (__alignof__(struct compat_xt_counters)-1)) \ & ~(__alignof__(struct compat_xt_counters)-1)) -extern void xt_compat_lock(int af); -extern void xt_compat_unlock(int af); +extern void xt_compat_lock(u_int8_t af); +extern void xt_compat_unlock(u_int8_t af); -extern int xt_compat_add_offset(int af, unsigned int offset, short delta); -extern void xt_compat_flush_offsets(int af); -extern short xt_compat_calc_jump(int af, unsigned int offset); +extern int xt_compat_add_offset(u_int8_t af, unsigned int offset, short delta); +extern void xt_compat_flush_offsets(u_int8_t af); +extern short xt_compat_calc_jump(u_int8_t af, unsigned int offset); extern int xt_compat_match_offset(const struct xt_match *match); extern int xt_compat_match_from_user(struct xt_entry_match *m, diff --git a/include/linux/netfilter/xt_TPROXY.h b/include/linux/netfilter/xt_TPROXY.h new file mode 100644 index 000000000000..152e8f97132b --- /dev/null +++ b/include/linux/netfilter/xt_TPROXY.h @@ -0,0 +1,14 @@ +#ifndef _XT_TPROXY_H_target +#define _XT_TPROXY_H_target + +/* TPROXY target is capable of marking the packet to perform + * redirection. We can get rid of that whenever we get support for + * mutliple targets in the same rule. */ +struct xt_tproxy_target_info { + u_int32_t mark_mask; + u_int32_t mark_value; + __be32 laddr; + __be16 lport; +}; + +#endif /* _XT_TPROXY_H_target */ diff --git a/include/linux/netfilter/xt_recent.h b/include/linux/netfilter/xt_recent.h new file mode 100644 index 000000000000..5cfeb81c6794 --- /dev/null +++ b/include/linux/netfilter/xt_recent.h @@ -0,0 +1,26 @@ +#ifndef _LINUX_NETFILTER_XT_RECENT_H +#define _LINUX_NETFILTER_XT_RECENT_H 1 + +enum { + XT_RECENT_CHECK = 1 << 0, + XT_RECENT_SET = 1 << 1, + XT_RECENT_UPDATE = 1 << 2, + XT_RECENT_REMOVE = 1 << 3, + XT_RECENT_TTL = 1 << 4, + + XT_RECENT_SOURCE = 0, + XT_RECENT_DEST = 1, + + XT_RECENT_NAME_LEN = 200, +}; + +struct xt_recent_mtinfo { + u_int32_t seconds; + u_int32_t hit_count; + u_int8_t check_set; + u_int8_t invert; + char name[XT_RECENT_NAME_LEN]; + u_int8_t side; +}; + +#endif /* _LINUX_NETFILTER_XT_RECENT_H */ diff --git a/include/linux/netfilter_bridge/ebtables.h b/include/linux/netfilter_bridge/ebtables.h index 892f5b7771c7..d45e29cd1cfb 100644 --- a/include/linux/netfilter_bridge/ebtables.h +++ b/include/linux/netfilter_bridge/ebtables.h @@ -31,6 +31,9 @@ * The 4 lsb are more than enough to store the verdict. */ #define EBT_VERDICT_BITS 0x0000000F +struct xt_match; +struct xt_target; + struct ebt_counter { uint64_t pcnt; @@ -121,7 +124,7 @@ struct ebt_entry_match { union { char name[EBT_FUNCTION_MAXNAMELEN]; - struct ebt_match *match; + struct xt_match *match; } u; /* size of data */ unsigned int match_size; @@ -132,7 +135,7 @@ struct ebt_entry_watcher { union { char name[EBT_FUNCTION_MAXNAMELEN]; - struct ebt_watcher *watcher; + struct xt_target *watcher; } u; /* size of data */ unsigned int watcher_size; @@ -143,7 +146,7 @@ struct ebt_entry_target { union { char name[EBT_FUNCTION_MAXNAMELEN]; - struct ebt_target *target; + struct xt_target *target; } u; /* size of data */ unsigned int target_size; @@ -207,14 +210,17 @@ struct ebt_match { struct list_head list; const char name[EBT_FUNCTION_MAXNAMELEN]; - /* 0 == it matches */ - int (*match)(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const void *matchdata, - unsigned int datalen); - /* 0 == let it in */ - int (*check)(const char *tablename, unsigned int hookmask, - const struct ebt_entry *e, void *matchdata, unsigned int datalen); - void (*destroy)(void *matchdata, unsigned int datalen); + bool (*match)(const struct sk_buff *skb, const struct net_device *in, + const struct net_device *out, const struct xt_match *match, + const void *matchinfo, int offset, unsigned int protoff, + bool *hotdrop); + bool (*checkentry)(const char *table, const void *entry, + const struct xt_match *match, void *matchinfo, + unsigned int hook_mask); + void (*destroy)(const struct xt_match *match, void *matchinfo); + unsigned int matchsize; + u_int8_t revision; + u_int8_t family; struct module *me; }; @@ -222,13 +228,17 @@ struct ebt_watcher { struct list_head list; const char name[EBT_FUNCTION_MAXNAMELEN]; - void (*watcher)(const struct sk_buff *skb, unsigned int hooknr, - const struct net_device *in, const struct net_device *out, - const void *watcherdata, unsigned int datalen); - /* 0 == let it in */ - int (*check)(const char *tablename, unsigned int hookmask, - const struct ebt_entry *e, void *watcherdata, unsigned int datalen); - void (*destroy)(void *watcherdata, unsigned int datalen); + unsigned int (*target)(struct sk_buff *skb, + const struct net_device *in, const struct net_device *out, + unsigned int hook_num, const struct xt_target *target, + const void *targinfo); + bool (*checkentry)(const char *table, const void *entry, + const struct xt_target *target, void *targinfo, + unsigned int hook_mask); + void (*destroy)(const struct xt_target *target, void *targinfo); + unsigned int targetsize; + u_int8_t revision; + u_int8_t family; struct module *me; }; @@ -236,14 +246,18 @@ struct ebt_target { struct list_head list; const char name[EBT_FUNCTION_MAXNAMELEN]; - /* returns one of the standard verdicts */ - int (*target)(struct sk_buff *skb, unsigned int hooknr, - const struct net_device *in, const struct net_device *out, - const void *targetdata, unsigned int datalen); - /* 0 == let it in */ - int (*check)(const char *tablename, unsigned int hookmask, - const struct ebt_entry *e, void *targetdata, unsigned int datalen); - void (*destroy)(void *targetdata, unsigned int datalen); + /* returns one of the standard EBT_* verdicts */ + unsigned int (*target)(struct sk_buff *skb, + const struct net_device *in, const struct net_device *out, + unsigned int hook_num, const struct xt_target *target, + const void *targinfo); + bool (*checkentry)(const char *table, const void *entry, + const struct xt_target *target, void *targinfo, + unsigned int hook_mask); + void (*destroy)(const struct xt_target *target, void *targinfo); + unsigned int targetsize; + u_int8_t revision; + u_int8_t family; struct module *me; }; @@ -288,12 +302,6 @@ struct ebt_table ~(__alignof__(struct ebt_replace)-1)) extern int ebt_register_table(struct ebt_table *table); extern void ebt_unregister_table(struct ebt_table *table); -extern int ebt_register_match(struct ebt_match *match); -extern void ebt_unregister_match(struct ebt_match *match); -extern int ebt_register_watcher(struct ebt_watcher *watcher); -extern void ebt_unregister_watcher(struct ebt_watcher *watcher); -extern int ebt_register_target(struct ebt_target *target); -extern void ebt_unregister_target(struct ebt_target *target); extern unsigned int ebt_do_table(unsigned int hook, struct sk_buff *skb, const struct net_device *in, const struct net_device *out, struct ebt_table *table); @@ -302,9 +310,9 @@ extern unsigned int ebt_do_table(unsigned int hook, struct sk_buff *skb, #define FWINV(bool,invflg) ((bool) ^ !!(info->invflags & invflg)) /* True if the hook mask denotes that the rule is in a base chain, * used in the check() functions */ -#define BASE_CHAIN (hookmask & (1 << NF_BR_NUMHOOKS)) +#define BASE_CHAIN (par->hook_mask & (1 << NF_BR_NUMHOOKS)) /* Clear the bit in the hook mask that tells if the rule is on a base chain */ -#define CLEAR_BASE_CHAIN_BIT (hookmask &= ~(1 << NF_BR_NUMHOOKS)) +#define CLEAR_BASE_CHAIN_BIT (par->hook_mask &= ~(1 << NF_BR_NUMHOOKS)) /* True if the target is not a standard target */ #define INVALID_TARGET (info->target < -NUM_STANDARD_TARGETS || info->target >= 0) diff --git a/include/linux/netfilter_ipv4/ipt_recent.h b/include/linux/netfilter_ipv4/ipt_recent.h index 6508a4592651..d636cca133c2 100644 --- a/include/linux/netfilter_ipv4/ipt_recent.h +++ b/include/linux/netfilter_ipv4/ipt_recent.h @@ -1,27 +1,21 @@ #ifndef _IPT_RECENT_H #define _IPT_RECENT_H -#define RECENT_NAME "ipt_recent" -#define RECENT_VER "v0.3.1" +#include <linux/netfilter/xt_recent.h> -#define IPT_RECENT_CHECK 1 -#define IPT_RECENT_SET 2 -#define IPT_RECENT_UPDATE 4 -#define IPT_RECENT_REMOVE 8 -#define IPT_RECENT_TTL 16 +#define ipt_recent_info xt_recent_mtinfo -#define IPT_RECENT_SOURCE 0 -#define IPT_RECENT_DEST 1 +enum { + IPT_RECENT_CHECK = XT_RECENT_CHECK, + IPT_RECENT_SET = XT_RECENT_SET, + IPT_RECENT_UPDATE = XT_RECENT_UPDATE, + IPT_RECENT_REMOVE = XT_RECENT_REMOVE, + IPT_RECENT_TTL = XT_RECENT_TTL, -#define IPT_RECENT_NAME_LEN 200 + IPT_RECENT_SOURCE = XT_RECENT_SOURCE, + IPT_RECENT_DEST = XT_RECENT_DEST, -struct ipt_recent_info { - u_int32_t seconds; - u_int32_t hit_count; - u_int8_t check_set; - u_int8_t invert; - char name[IPT_RECENT_NAME_LEN]; - u_int8_t side; + IPT_RECENT_NAME_LEN = XT_RECENT_NAME_LEN, }; #endif /*_IPT_RECENT_H*/ diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h index a8eb43cf0c7e..708009be88b6 100644 --- a/include/net/net_namespace.h +++ b/include/net/net_namespace.h @@ -16,6 +16,9 @@ #include <net/netns/ipv6.h> #include <net/netns/dccp.h> #include <net/netns/x_tables.h> +#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE) +#include <net/netns/conntrack.h> +#endif struct proc_dir_entry; struct net_device; @@ -67,6 +70,9 @@ struct net { #endif #ifdef CONFIG_NETFILTER struct netns_xt xt; +#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE) + struct netns_ct ct; +#endif #endif struct net_generic *gen; }; diff --git a/include/net/netfilter/ipv4/nf_defrag_ipv4.h b/include/net/netfilter/ipv4/nf_defrag_ipv4.h new file mode 100644 index 000000000000..6b00ea38546b --- /dev/null +++ b/include/net/netfilter/ipv4/nf_defrag_ipv4.h @@ -0,0 +1,6 @@ +#ifndef _NF_DEFRAG_IPV4_H +#define _NF_DEFRAG_IPV4_H + +extern void nf_defrag_ipv4_enable(void); + +#endif /* _NF_DEFRAG_IPV4_H */ diff --git a/include/net/netfilter/nf_conntrack.h b/include/net/netfilter/nf_conntrack.h index 0741ad592da0..b76a8685b5b5 100644 --- a/include/net/netfilter/nf_conntrack.h +++ b/include/net/netfilter/nf_conntrack.h @@ -123,7 +123,9 @@ struct nf_conn /* Extensions */ struct nf_ct_ext *ext; - +#ifdef CONFIG_NET_NS + struct net *ct_net; +#endif struct rcu_head rcu; }; @@ -147,6 +149,17 @@ static inline u_int8_t nf_ct_protonum(const struct nf_conn *ct) /* get master conntrack via master expectation */ #define master_ct(conntr) (conntr->master) +extern struct net init_net; + +static inline struct net *nf_ct_net(const struct nf_conn *ct) +{ +#ifdef CONFIG_NET_NS + return ct->ct_net; +#else + return &init_net; +#endif +} + /* Alter reply tuple (maybe alter helper). */ extern void nf_conntrack_alter_reply(struct nf_conn *ct, @@ -182,11 +195,11 @@ extern void nf_ct_free_hashtable(struct hlist_head *hash, int vmalloced, unsigned int size); extern struct nf_conntrack_tuple_hash * -__nf_conntrack_find(const struct nf_conntrack_tuple *tuple); +__nf_conntrack_find(struct net *net, const struct nf_conntrack_tuple *tuple); extern void nf_conntrack_hash_insert(struct nf_conn *ct); -extern void nf_conntrack_flush(void); +extern void nf_conntrack_flush(struct net *net); extern bool nf_ct_get_tuplepr(const struct sk_buff *skb, unsigned int nhoff, u_int16_t l3num, @@ -248,10 +261,11 @@ extern struct nf_conn nf_conntrack_untracked; /* Iterate over all conntracks: if iter returns true, it's deleted. */ extern void -nf_ct_iterate_cleanup(int (*iter)(struct nf_conn *i, void *data), void *data); +nf_ct_iterate_cleanup(struct net *net, int (*iter)(struct nf_conn *i, void *data), void *data); extern void nf_conntrack_free(struct nf_conn *ct); extern struct nf_conn * -nf_conntrack_alloc(const struct nf_conntrack_tuple *orig, +nf_conntrack_alloc(struct net *net, + const struct nf_conntrack_tuple *orig, const struct nf_conntrack_tuple *repl, gfp_t gfp); @@ -273,16 +287,14 @@ static inline int nf_ct_is_untracked(const struct sk_buff *skb) extern int nf_conntrack_set_hashsize(const char *val, struct kernel_param *kp); extern unsigned int nf_conntrack_htable_size; -extern int nf_conntrack_checksum; -extern atomic_t nf_conntrack_count; extern int nf_conntrack_max; -DECLARE_PER_CPU(struct ip_conntrack_stat, nf_conntrack_stat); -#define NF_CT_STAT_INC(count) (__get_cpu_var(nf_conntrack_stat).count++) -#define NF_CT_STAT_INC_ATOMIC(count) \ +#define NF_CT_STAT_INC(net, count) \ + (per_cpu_ptr((net)->ct.stat, raw_smp_processor_id())->count++) +#define NF_CT_STAT_INC_ATOMIC(net, count) \ do { \ local_bh_disable(); \ - __get_cpu_var(nf_conntrack_stat).count++; \ + per_cpu_ptr((net)->ct.stat, raw_smp_processor_id())->count++; \ local_bh_enable(); \ } while (0) diff --git a/include/net/netfilter/nf_conntrack_acct.h b/include/net/netfilter/nf_conntrack_acct.h index 5d5ae55d54c4..03e218f0be43 100644 --- a/include/net/netfilter/nf_conntrack_acct.h +++ b/include/net/netfilter/nf_conntrack_acct.h @@ -8,6 +8,7 @@ #ifndef _NF_CONNTRACK_ACCT_H #define _NF_CONNTRACK_ACCT_H +#include <net/net_namespace.h> #include <linux/netfilter/nf_conntrack_common.h> #include <linux/netfilter/nf_conntrack_tuple_common.h> #include <net/netfilter/nf_conntrack.h> @@ -18,8 +19,6 @@ struct nf_conn_counter { u_int64_t bytes; }; -extern int nf_ct_acct; - static inline struct nf_conn_counter *nf_conn_acct_find(const struct nf_conn *ct) { @@ -29,9 +28,10 @@ struct nf_conn_counter *nf_conn_acct_find(const struct nf_conn *ct) static inline struct nf_conn_counter *nf_ct_acct_ext_add(struct nf_conn *ct, gfp_t gfp) { + struct net *net = nf_ct_net(ct); struct nf_conn_counter *acct; - if (!nf_ct_acct) + if (!net->ct.sysctl_acct) return NULL; acct = nf_ct_ext_add(ct, NF_CT_EXT_ACCT, gfp); @@ -45,7 +45,7 @@ struct nf_conn_counter *nf_ct_acct_ext_add(struct nf_conn *ct, gfp_t gfp) extern unsigned int seq_print_acct(struct seq_file *s, const struct nf_conn *ct, int dir); -extern int nf_conntrack_acct_init(void); -extern void nf_conntrack_acct_fini(void); +extern int nf_conntrack_acct_init(struct net *net); +extern void nf_conntrack_acct_fini(struct net *net); #endif /* _NF_CONNTRACK_ACCT_H */ diff --git a/include/net/netfilter/nf_conntrack_core.h b/include/net/netfilter/nf_conntrack_core.h index a81771210934..e78afe7f28e3 100644 --- a/include/net/netfilter/nf_conntrack_core.h +++ b/include/net/netfilter/nf_conntrack_core.h @@ -20,12 +20,13 @@ /* This header is used to share core functionality between the standalone connection tracking module, and the compatibility layer's use of connection tracking. */ -extern unsigned int nf_conntrack_in(int pf, +extern unsigned int nf_conntrack_in(struct net *net, + u_int8_t pf, unsigned int hooknum, struct sk_buff *skb); -extern int nf_conntrack_init(void); -extern void nf_conntrack_cleanup(void); +extern int nf_conntrack_init(struct net *net); +extern void nf_conntrack_cleanup(struct net *net); extern int nf_conntrack_proto_init(void); extern void nf_conntrack_proto_fini(void); @@ -48,7 +49,7 @@ nf_ct_invert_tuple(struct nf_conntrack_tuple *inverse, /* Find a connection corresponding to a tuple. */ extern struct nf_conntrack_tuple_hash * -nf_conntrack_find_get(const struct nf_conntrack_tuple *tuple); +nf_conntrack_find_get(struct net *net, const struct nf_conntrack_tuple *tuple); extern int __nf_conntrack_confirm(struct sk_buff *skb); @@ -71,8 +72,6 @@ print_tuple(struct seq_file *s, const struct nf_conntrack_tuple *tuple, const struct nf_conntrack_l3proto *l3proto, const struct nf_conntrack_l4proto *proto); -extern struct hlist_head *nf_conntrack_hash; extern spinlock_t nf_conntrack_lock ; -extern struct hlist_head unconfirmed; #endif /* _NF_CONNTRACK_CORE_H */ diff --git a/include/net/netfilter/nf_conntrack_ecache.h b/include/net/netfilter/nf_conntrack_ecache.h index f0b9078235c9..35f814c1e2ca 100644 --- a/include/net/netfilter/nf_conntrack_ecache.h +++ b/include/net/netfilter/nf_conntrack_ecache.h @@ -8,6 +8,7 @@ #include <linux/notifier.h> #include <linux/interrupt.h> +#include <net/net_namespace.h> #include <net/netfilter/nf_conntrack_expect.h> #ifdef CONFIG_NF_CONNTRACK_EVENTS @@ -15,9 +16,6 @@ struct nf_conntrack_ecache { struct nf_conn *ct; unsigned int events; }; -DECLARE_PER_CPU(struct nf_conntrack_ecache, nf_conntrack_ecache); - -#define CONNTRACK_ECACHE(x) (__get_cpu_var(nf_conntrack_ecache).x) extern struct atomic_notifier_head nf_conntrack_chain; extern int nf_conntrack_register_notifier(struct notifier_block *nb); @@ -25,17 +23,16 @@ extern int nf_conntrack_unregister_notifier(struct notifier_block *nb); extern void nf_ct_deliver_cached_events(const struct nf_conn *ct); extern void __nf_ct_event_cache_init(struct nf_conn *ct); -extern void nf_ct_event_cache_flush(void); +extern void nf_ct_event_cache_flush(struct net *net); static inline void -nf_conntrack_event_cache(enum ip_conntrack_events event, - const struct sk_buff *skb) +nf_conntrack_event_cache(enum ip_conntrack_events event, struct nf_conn *ct) { - struct nf_conn *ct = (struct nf_conn *)skb->nfct; + struct net *net = nf_ct_net(ct); struct nf_conntrack_ecache *ecache; local_bh_disable(); - ecache = &__get_cpu_var(nf_conntrack_ecache); + ecache = per_cpu_ptr(net->ct.ecache, raw_smp_processor_id()); if (ct != ecache->ct) __nf_ct_event_cache_init(ct); ecache->events |= event; @@ -60,6 +57,9 @@ nf_ct_expect_event(enum ip_conntrack_expect_events event, atomic_notifier_call_chain(&nf_ct_expect_chain, event, exp); } +extern int nf_conntrack_ecache_init(struct net *net); +extern void nf_conntrack_ecache_fini(struct net *net); + #else /* CONFIG_NF_CONNTRACK_EVENTS */ static inline void nf_conntrack_event_cache(enum ip_conntrack_events event, @@ -69,7 +69,15 @@ static inline void nf_conntrack_event(enum ip_conntrack_events event, static inline void nf_ct_deliver_cached_events(const struct nf_conn *ct) {} static inline void nf_ct_expect_event(enum ip_conntrack_expect_events event, struct nf_conntrack_expect *exp) {} -static inline void nf_ct_event_cache_flush(void) {} +static inline void nf_ct_event_cache_flush(struct net *net) {} + +static inline int nf_conntrack_ecache_init(struct net *net) +{ + return 0; + +static inline void nf_conntrack_ecache_fini(struct net *net) +{ +} #endif /* CONFIG_NF_CONNTRACK_EVENTS */ #endif /*_NF_CONNTRACK_ECACHE_H*/ diff --git a/include/net/netfilter/nf_conntrack_expect.h b/include/net/netfilter/nf_conntrack_expect.h index dfdf4b459475..37a7fc1164b0 100644 --- a/include/net/netfilter/nf_conntrack_expect.h +++ b/include/net/netfilter/nf_conntrack_expect.h @@ -6,7 +6,6 @@ #define _NF_CONNTRACK_EXPECT_H #include <net/netfilter/nf_conntrack.h> -extern struct hlist_head *nf_ct_expect_hash; extern unsigned int nf_ct_expect_hsize; extern unsigned int nf_ct_expect_max; @@ -56,6 +55,15 @@ struct nf_conntrack_expect struct rcu_head rcu; }; +static inline struct net *nf_ct_exp_net(struct nf_conntrack_expect *exp) +{ +#ifdef CONFIG_NET_NS + return exp->master->ct_net; /* by definition */ +#else + return &init_net; +#endif +} + struct nf_conntrack_expect_policy { unsigned int max_expected; @@ -67,17 +75,17 @@ struct nf_conntrack_expect_policy #define NF_CT_EXPECT_PERMANENT 0x1 #define NF_CT_EXPECT_INACTIVE 0x2 -int nf_conntrack_expect_init(void); -void nf_conntrack_expect_fini(void); +int nf_conntrack_expect_init(struct net *net); +void nf_conntrack_expect_fini(struct net *net); struct nf_conntrack_expect * -__nf_ct_expect_find(const struct nf_conntrack_tuple *tuple); +__nf_ct_expect_find(struct net *net, const struct nf_conntrack_tuple *tuple); struct nf_conntrack_expect * -nf_ct_expect_find_get(const struct nf_conntrack_tuple *tuple); +nf_ct_expect_find_get(struct net *net, const struct nf_conntrack_tuple *tuple); struct nf_conntrack_expect * -nf_ct_find_expectation(const struct nf_conntrack_tuple *tuple); +nf_ct_find_expectation(struct net *net, const struct nf_conntrack_tuple *tuple); void nf_ct_unlink_expect(struct nf_conntrack_expect *exp); void nf_ct_remove_expectations(struct nf_conn *ct); @@ -86,7 +94,7 @@ void nf_ct_unexpect_related(struct nf_conntrack_expect *exp); /* Allocate space for an expectation: this is mandatory before calling nf_ct_expect_related. You will have to call put afterwards. */ struct nf_conntrack_expect *nf_ct_expect_alloc(struct nf_conn *me); -void nf_ct_expect_init(struct nf_conntrack_expect *, unsigned int, int, +void nf_ct_expect_init(struct nf_conntrack_expect *, unsigned int, u_int8_t, const union nf_inet_addr *, const union nf_inet_addr *, u_int8_t, const __be16 *, const __be16 *); diff --git a/include/net/netfilter/nf_conntrack_l4proto.h b/include/net/netfilter/nf_conntrack_l4proto.h index 723df9d1cc35..7f2f43c77284 100644 --- a/include/net/netfilter/nf_conntrack_l4proto.h +++ b/include/net/netfilter/nf_conntrack_l4proto.h @@ -39,7 +39,7 @@ struct nf_conntrack_l4proto const struct sk_buff *skb, unsigned int dataoff, enum ip_conntrack_info ctinfo, - int pf, + u_int8_t pf, unsigned int hooknum); /* Called when a new connection for this protocol found; @@ -50,9 +50,9 @@ struct nf_conntrack_l4proto /* Called when a conntrack entry is destroyed */ void (*destroy)(struct nf_conn *ct); - int (*error)(struct sk_buff *skb, unsigned int dataoff, + int (*error)(struct net *net, struct sk_buff *skb, unsigned int dataoff, enum ip_conntrack_info *ctinfo, - int pf, unsigned int hooknum); + u_int8_t pf, unsigned int hooknum); /* Print out the per-protocol part of the tuple. Return like seq_* */ int (*print_tuple)(struct seq_file *s, @@ -117,20 +117,19 @@ extern int nf_ct_port_nlattr_to_tuple(struct nlattr *tb[], struct nf_conntrack_tuple *t); extern const struct nla_policy nf_ct_port_nla_policy[]; -/* Log invalid packets */ -extern unsigned int nf_ct_log_invalid; - #ifdef CONFIG_SYSCTL #ifdef DEBUG_INVALID_PACKETS -#define LOG_INVALID(proto) \ - (nf_ct_log_invalid == (proto) || nf_ct_log_invalid == IPPROTO_RAW) +#define LOG_INVALID(net, proto) \ + ((net)->ct.sysctl_log_invalid == (proto) || \ + (net)->ct.sysctl_log_invalid == IPPROTO_RAW) #else -#define LOG_INVALID(proto) \ - ((nf_ct_log_invalid == (proto) || nf_ct_log_invalid == IPPROTO_RAW) \ +#define LOG_INVALID(net, proto) \ + (((net)->ct.sysctl_log_invalid == (proto) || \ + (net)->ct.sysctl_log_invalid == IPPROTO_RAW) \ && net_ratelimit()) #endif #else -#define LOG_INVALID(proto) 0 +#define LOG_INVALID(net, proto) 0 #endif /* CONFIG_SYSCTL */ #endif /*_NF_CONNTRACK_PROTOCOL_H*/ diff --git a/include/net/netfilter/nf_log.h b/include/net/netfilter/nf_log.h index 8c6b5ae45534..7182c06974f4 100644 --- a/include/net/netfilter/nf_log.h +++ b/include/net/netfilter/nf_log.h @@ -28,7 +28,7 @@ struct nf_loginfo { } u; }; -typedef void nf_logfn(unsigned int pf, +typedef void nf_logfn(u_int8_t pf, unsigned int hooknum, const struct sk_buff *skb, const struct net_device *in, @@ -43,12 +43,12 @@ struct nf_logger { }; /* Function to register/unregister log function. */ -int nf_log_register(int pf, const struct nf_logger *logger); +int nf_log_register(u_int8_t pf, const struct nf_logger *logger); void nf_log_unregister(const struct nf_logger *logger); -void nf_log_unregister_pf(int pf); +void nf_log_unregister_pf(u_int8_t pf); /* Calls the registered backend logging function */ -void nf_log_packet(int pf, +void nf_log_packet(u_int8_t pf, unsigned int hooknum, const struct sk_buff *skb, const struct net_device *in, diff --git a/include/net/netfilter/nf_queue.h b/include/net/netfilter/nf_queue.h index d030044e9235..252fd1010b77 100644 --- a/include/net/netfilter/nf_queue.h +++ b/include/net/netfilter/nf_queue.h @@ -8,7 +8,7 @@ struct nf_queue_entry { unsigned int id; struct nf_hook_ops *elem; - int pf; + u_int8_t pf; unsigned int hook; struct net_device *indev; struct net_device *outdev; @@ -24,9 +24,9 @@ struct nf_queue_handler { char *name; }; -extern int nf_register_queue_handler(int pf, +extern int nf_register_queue_handler(u_int8_t pf, const struct nf_queue_handler *qh); -extern int nf_unregister_queue_handler(int pf, +extern int nf_unregister_queue_handler(u_int8_t pf, const struct nf_queue_handler *qh); extern void nf_unregister_queue_handlers(const struct nf_queue_handler *qh); extern void nf_reinject(struct nf_queue_entry *entry, unsigned int verdict); diff --git a/include/net/netfilter/nf_tproxy_core.h b/include/net/netfilter/nf_tproxy_core.h new file mode 100644 index 000000000000..208b46f4d6d2 --- /dev/null +++ b/include/net/netfilter/nf_tproxy_core.h @@ -0,0 +1,32 @@ +#ifndef _NF_TPROXY_CORE_H +#define _NF_TPROXY_CORE_H + +#include <linux/types.h> +#include <linux/in.h> +#include <linux/skbuff.h> +#include <net/sock.h> +#include <net/inet_sock.h> +#include <net/tcp.h> + +/* look up and get a reference to a matching socket */ +extern struct sock * +nf_tproxy_get_sock_v4(struct net *net, const u8 protocol, + const __be32 saddr, const __be32 daddr, + const __be16 sport, const __be16 dport, + const struct net_device *in, bool listening); + +static inline void +nf_tproxy_put_sock(struct sock *sk) +{ + /* TIME_WAIT inet sockets have to be handled differently */ + if ((sk->sk_protocol == IPPROTO_TCP) && (sk->sk_state == TCP_TIME_WAIT)) + inet_twsk_put(inet_twsk(sk)); + else + sock_put(sk); +} + +/* assign a socket to the skb -- consumes sk */ +int +nf_tproxy_assign_sock(struct sk_buff *skb, struct sock *sk); + +#endif diff --git a/include/net/netns/conntrack.h b/include/net/netns/conntrack.h new file mode 100644 index 000000000000..f4498a62881b --- /dev/null +++ b/include/net/netns/conntrack.h @@ -0,0 +1,30 @@ +#ifndef __NETNS_CONNTRACK_H +#define __NETNS_CONNTRACK_H + +#include <linux/list.h> +#include <asm/atomic.h> + +struct ctl_table_header; +struct nf_conntrack_ecache; + +struct netns_ct { + atomic_t count; + unsigned int expect_count; + struct hlist_head *hash; + struct hlist_head *expect_hash; + struct hlist_head unconfirmed; + struct ip_conntrack_stat *stat; +#ifdef CONFIG_NF_CONNTRACK_EVENTS + struct nf_conntrack_ecache *ecache; +#endif + int sysctl_acct; + int sysctl_checksum; + unsigned int sysctl_log_invalid; /* Log invalid packets */ +#ifdef CONFIG_SYSCTL + struct ctl_table_header *sysctl_header; + struct ctl_table_header *acct_sysctl_header; +#endif + int hash_vmalloc; + int expect_vmalloc; +}; +#endif diff --git a/include/net/netns/ipv4.h b/include/net/netns/ipv4.h index a6ed83853dcc..ece1c926b5d1 100644 --- a/include/net/netns/ipv4.h +++ b/include/net/netns/ipv4.h @@ -38,6 +38,9 @@ struct netns_ipv4 { struct xt_table *iptable_raw; struct xt_table *arptable_filter; struct xt_table *iptable_security; + struct xt_table *nat_table; + struct hlist_head *nat_bysource; + int nat_vmalloced; #endif int sysctl_icmp_echo_ignore_all; diff --git a/net/bridge/br_netfilter.c b/net/bridge/br_netfilter.c index 6a9a6cd74b1e..a4abed5b4c44 100644 --- a/net/bridge/br_netfilter.c +++ b/net/bridge/br_netfilter.c @@ -657,7 +657,7 @@ static unsigned int br_nf_forward_ip(unsigned int hook, struct sk_buff *skb, { struct nf_bridge_info *nf_bridge; struct net_device *parent; - int pf; + u_int8_t pf; if (!skb->nf_bridge) return NF_ACCEPT; @@ -791,7 +791,7 @@ static unsigned int br_nf_post_routing(unsigned int hook, struct sk_buff *skb, { struct nf_bridge_info *nf_bridge = skb->nf_bridge; struct net_device *realoutdev = bridge_parent(skb->dev); - int pf; + u_int8_t pf; #ifdef CONFIG_NETFILTER_DEBUG /* Be very paranoid. This probably won't happen anymore, but let's diff --git a/net/bridge/netfilter/Kconfig b/net/bridge/netfilter/Kconfig index 909479794999..366d3e9d51f8 100644 --- a/net/bridge/netfilter/Kconfig +++ b/net/bridge/netfilter/Kconfig @@ -2,21 +2,21 @@ # Bridge netfilter configuration # -menu "Bridge: Netfilter Configuration" - depends on BRIDGE && BRIDGE_NETFILTER - -config BRIDGE_NF_EBTABLES +menuconfig BRIDGE_NF_EBTABLES tristate "Ethernet Bridge tables (ebtables) support" + select NETFILTER_XTABLES help ebtables is a general, extensible frame/packet identification framework. Say 'Y' or 'M' here if you want to do Ethernet filtering/NAT/brouting on the Ethernet bridge. + +if BRIDGE_NF_EBTABLES + # # tables # config BRIDGE_EBT_BROUTE tristate "ebt: broute table support" - depends on BRIDGE_NF_EBTABLES help The ebtables broute table is used to define rules that decide between bridging and routing frames, giving Linux the functionality of a @@ -27,7 +27,6 @@ config BRIDGE_EBT_BROUTE config BRIDGE_EBT_T_FILTER tristate "ebt: filter table support" - depends on BRIDGE_NF_EBTABLES help The ebtables filter table is used to define frame filtering rules at local input, forwarding and local output. See the man page for @@ -37,7 +36,6 @@ config BRIDGE_EBT_T_FILTER config BRIDGE_EBT_T_NAT tristate "ebt: nat table support" - depends on BRIDGE_NF_EBTABLES help The ebtables nat table is used to define rules that alter the MAC source address (MAC SNAT) or the MAC destination address (MAC DNAT). @@ -49,7 +47,6 @@ config BRIDGE_EBT_T_NAT # config BRIDGE_EBT_802_3 tristate "ebt: 802.3 filter support" - depends on BRIDGE_NF_EBTABLES help This option adds matching support for 802.3 Ethernet frames. @@ -57,7 +54,6 @@ config BRIDGE_EBT_802_3 config BRIDGE_EBT_AMONG tristate "ebt: among filter support" - depends on BRIDGE_NF_EBTABLES help This option adds the among match, which allows matching the MAC source and/or destination address on a list of addresses. Optionally, @@ -67,7 +63,6 @@ config BRIDGE_EBT_AMONG config BRIDGE_EBT_ARP tristate "ebt: ARP filter support" - depends on BRIDGE_NF_EBTABLES help This option adds the ARP match, which allows ARP and RARP header field filtering. @@ -76,7 +71,6 @@ config BRIDGE_EBT_ARP config BRIDGE_EBT_IP tristate "ebt: IP filter support" - depends on BRIDGE_NF_EBTABLES help This option adds the IP match, which allows basic IP header field filtering. @@ -94,7 +88,6 @@ config BRIDGE_EBT_IP6 config BRIDGE_EBT_LIMIT tristate "ebt: limit match support" - depends on BRIDGE_NF_EBTABLES help This option adds the limit match, which allows you to control the rate at which a rule can be matched. This match is the @@ -105,7 +98,6 @@ config BRIDGE_EBT_LIMIT config BRIDGE_EBT_MARK tristate "ebt: mark filter support" - depends on BRIDGE_NF_EBTABLES help This option adds the mark match, which allows matching frames based on the 'nfmark' value in the frame. This can be set by the mark target. @@ -116,7 +108,6 @@ config BRIDGE_EBT_MARK config BRIDGE_EBT_PKTTYPE tristate "ebt: packet type filter support" - depends on BRIDGE_NF_EBTABLES help This option adds the packet type match, which allows matching on the type of packet based on its Ethernet "class" (as determined by @@ -127,7 +118,6 @@ config BRIDGE_EBT_PKTTYPE config BRIDGE_EBT_STP tristate "ebt: STP filter support" - depends on BRIDGE_NF_EBTABLES help This option adds the Spanning Tree Protocol match, which allows STP header field filtering. @@ -136,7 +126,6 @@ config BRIDGE_EBT_STP config BRIDGE_EBT_VLAN tristate "ebt: 802.1Q VLAN filter support" - depends on BRIDGE_NF_EBTABLES help This option adds the 802.1Q vlan match, which allows the filtering of 802.1Q vlan fields. @@ -156,7 +145,6 @@ config BRIDGE_EBT_ARPREPLY config BRIDGE_EBT_DNAT tristate "ebt: dnat target support" - depends on BRIDGE_NF_EBTABLES help This option adds the MAC DNAT target, which allows altering the MAC destination address of frames. @@ -165,7 +153,6 @@ config BRIDGE_EBT_DNAT config BRIDGE_EBT_MARK_T tristate "ebt: mark target support" - depends on BRIDGE_NF_EBTABLES help This option adds the mark target, which allows marking frames by setting the 'nfmark' value in the frame. @@ -176,7 +163,6 @@ config BRIDGE_EBT_MARK_T config BRIDGE_EBT_REDIRECT tristate "ebt: redirect target support" - depends on BRIDGE_NF_EBTABLES help This option adds the MAC redirect target, which allows altering the MAC destination address of a frame to that of the device it arrived on. @@ -185,7 +171,6 @@ config BRIDGE_EBT_REDIRECT config BRIDGE_EBT_SNAT tristate "ebt: snat target support" - depends on BRIDGE_NF_EBTABLES help This option adds the MAC SNAT target, which allows altering the MAC source address of frames. @@ -196,7 +181,6 @@ config BRIDGE_EBT_SNAT # config BRIDGE_EBT_LOG tristate "ebt: log support" - depends on BRIDGE_NF_EBTABLES help This option adds the log watcher, that you can use in any rule in any ebtables table. It records info about the frame header @@ -206,7 +190,6 @@ config BRIDGE_EBT_LOG config BRIDGE_EBT_ULOG tristate "ebt: ulog support (OBSOLETE)" - depends on BRIDGE_NF_EBTABLES help This option enables the old bridge-specific "ebt_ulog" implementation which has been obsoleted by the new "nfnetlink_log" code (see @@ -223,7 +206,6 @@ config BRIDGE_EBT_ULOG config BRIDGE_EBT_NFLOG tristate "ebt: nflog support" - depends on BRIDGE_NF_EBTABLES help This option enables the nflog watcher, which allows to LOG messages through the netfilter logging API, which can use @@ -235,4 +217,4 @@ config BRIDGE_EBT_NFLOG To compile it as a module, choose M here. If unsure, say N. -endmenu +endif # BRIDGE_NF_EBTABLES diff --git a/net/bridge/netfilter/ebt_802_3.c b/net/bridge/netfilter/ebt_802_3.c index 98534025360f..bd91dc58d49b 100644 --- a/net/bridge/netfilter/ebt_802_3.c +++ b/net/bridge/netfilter/ebt_802_3.c @@ -7,64 +7,63 @@ * May 2003 * */ - +#include <linux/module.h> +#include <linux/netfilter/x_tables.h> #include <linux/netfilter_bridge/ebtables.h> #include <linux/netfilter_bridge/ebt_802_3.h> -#include <linux/module.h> -static int ebt_filter_802_3(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const void *data, unsigned int datalen) +static bool +ebt_802_3_mt(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct ebt_802_3_info *info = data; + const struct ebt_802_3_info *info = par->matchinfo; const struct ebt_802_3_hdr *hdr = ebt_802_3_hdr(skb); __be16 type = hdr->llc.ui.ctrl & IS_UI ? hdr->llc.ui.type : hdr->llc.ni.type; if (info->bitmask & EBT_802_3_SAP) { if (FWINV(info->sap != hdr->llc.ui.ssap, EBT_802_3_SAP)) - return EBT_NOMATCH; + return false; if (FWINV(info->sap != hdr->llc.ui.dsap, EBT_802_3_SAP)) - return EBT_NOMATCH; + return false; } if (info->bitmask & EBT_802_3_TYPE) { if (!(hdr->llc.ui.dsap == CHECK_TYPE && hdr->llc.ui.ssap == CHECK_TYPE)) - return EBT_NOMATCH; + return false; if (FWINV(info->type != type, EBT_802_3_TYPE)) - return EBT_NOMATCH; + return false; } - return EBT_MATCH; + return true; } -static struct ebt_match filter_802_3; -static int ebt_802_3_check(const char *tablename, unsigned int hookmask, - const struct ebt_entry *e, void *data, unsigned int datalen) +static bool ebt_802_3_mt_check(const struct xt_mtchk_param *par) { - const struct ebt_802_3_info *info = data; + const struct ebt_802_3_info *info = par->matchinfo; - if (datalen < sizeof(struct ebt_802_3_info)) - return -EINVAL; if (info->bitmask & ~EBT_802_3_MASK || info->invflags & ~EBT_802_3_MASK) - return -EINVAL; + return false; - return 0; + return true; } -static struct ebt_match filter_802_3 __read_mostly = { - .name = EBT_802_3_MATCH, - .match = ebt_filter_802_3, - .check = ebt_802_3_check, +static struct xt_match ebt_802_3_mt_reg __read_mostly = { + .name = "802_3", + .revision = 0, + .family = NFPROTO_BRIDGE, + .match = ebt_802_3_mt, + .checkentry = ebt_802_3_mt_check, + .matchsize = XT_ALIGN(sizeof(struct ebt_802_3_info)), .me = THIS_MODULE, }; static int __init ebt_802_3_init(void) { - return ebt_register_match(&filter_802_3); + return xt_register_match(&ebt_802_3_mt_reg); } static void __exit ebt_802_3_fini(void) { - ebt_unregister_match(&filter_802_3); + xt_unregister_match(&ebt_802_3_mt_reg); } module_init(ebt_802_3_init); diff --git a/net/bridge/netfilter/ebt_among.c b/net/bridge/netfilter/ebt_among.c index 70b6dca5ea75..b595f091f35b 100644 --- a/net/bridge/netfilter/ebt_among.c +++ b/net/bridge/netfilter/ebt_among.c @@ -7,15 +7,15 @@ * August, 2003 * */ - -#include <linux/netfilter_bridge/ebtables.h> -#include <linux/netfilter_bridge/ebt_among.h> #include <linux/ip.h> #include <linux/if_arp.h> #include <linux/module.h> +#include <linux/netfilter/x_tables.h> +#include <linux/netfilter_bridge/ebtables.h> +#include <linux/netfilter_bridge/ebt_among.h> -static int ebt_mac_wormhash_contains(const struct ebt_mac_wormhash *wh, - const char *mac, __be32 ip) +static bool ebt_mac_wormhash_contains(const struct ebt_mac_wormhash *wh, + const char *mac, __be32 ip) { /* You may be puzzled as to how this code works. * Some tricks were used, refer to @@ -33,23 +33,19 @@ static int ebt_mac_wormhash_contains(const struct ebt_mac_wormhash *wh, if (ip) { for (i = start; i < limit; i++) { p = &wh->pool[i]; - if (cmp[1] == p->cmp[1] && cmp[0] == p->cmp[0]) { - if (p->ip == 0 || p->ip == ip) { - return 1; - } - } + if (cmp[1] == p->cmp[1] && cmp[0] == p->cmp[0]) + if (p->ip == 0 || p->ip == ip) + return true; } } else { for (i = start; i < limit; i++) { p = &wh->pool[i]; - if (cmp[1] == p->cmp[1] && cmp[0] == p->cmp[0]) { - if (p->ip == 0) { - return 1; - } - } + if (cmp[1] == p->cmp[1] && cmp[0] == p->cmp[0]) + if (p->ip == 0) + return true; } } - return 0; + return false; } static int ebt_mac_wormhash_check_integrity(const struct ebt_mac_wormhash @@ -131,12 +127,10 @@ static int get_ip_src(const struct sk_buff *skb, __be32 *addr) return 0; } -static int ebt_filter_among(const struct sk_buff *skb, - const struct net_device *in, - const struct net_device *out, const void *data, - unsigned int datalen) +static bool +ebt_among_mt(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct ebt_among_info *info = data; + const struct ebt_among_info *info = par->matchinfo; const char *dmac, *smac; const struct ebt_mac_wormhash *wh_dst, *wh_src; __be32 dip = 0, sip = 0; @@ -147,41 +141,41 @@ static int ebt_filter_among(const struct sk_buff *skb, if (wh_src) { smac = eth_hdr(skb)->h_source; if (get_ip_src(skb, &sip)) - return EBT_NOMATCH; + return false; if (!(info->bitmask & EBT_AMONG_SRC_NEG)) { /* we match only if it contains */ if (!ebt_mac_wormhash_contains(wh_src, smac, sip)) - return EBT_NOMATCH; + return false; } else { /* we match only if it DOES NOT contain */ if (ebt_mac_wormhash_contains(wh_src, smac, sip)) - return EBT_NOMATCH; + return false; } } if (wh_dst) { dmac = eth_hdr(skb)->h_dest; if (get_ip_dst(skb, &dip)) - return EBT_NOMATCH; + return false; if (!(info->bitmask & EBT_AMONG_DST_NEG)) { /* we match only if it contains */ if (!ebt_mac_wormhash_contains(wh_dst, dmac, dip)) - return EBT_NOMATCH; + return false; } else { /* we match only if it DOES NOT contain */ if (ebt_mac_wormhash_contains(wh_dst, dmac, dip)) - return EBT_NOMATCH; + return false; } } - return EBT_MATCH; + return true; } -static int ebt_among_check(const char *tablename, unsigned int hookmask, - const struct ebt_entry *e, void *data, - unsigned int datalen) +static bool ebt_among_mt_check(const struct xt_mtchk_param *par) { - const struct ebt_among_info *info = data; + const struct ebt_among_info *info = par->matchinfo; + const struct ebt_entry_match *em = + container_of(par->matchinfo, const struct ebt_entry_match, data); int expected_length = sizeof(struct ebt_among_info); const struct ebt_mac_wormhash *wh_dst, *wh_src; int err; @@ -191,42 +185,45 @@ static int ebt_among_check(const char *tablename, unsigned int hookmask, expected_length += ebt_mac_wormhash_size(wh_dst); expected_length += ebt_mac_wormhash_size(wh_src); - if (datalen != EBT_ALIGN(expected_length)) { + if (em->match_size != EBT_ALIGN(expected_length)) { printk(KERN_WARNING "ebtables: among: wrong size: %d " "against expected %d, rounded to %Zd\n", - datalen, expected_length, + em->match_size, expected_length, EBT_ALIGN(expected_length)); - return -EINVAL; + return false; } if (wh_dst && (err = ebt_mac_wormhash_check_integrity(wh_dst))) { printk(KERN_WARNING "ebtables: among: dst integrity fail: %x\n", -err); - return -EINVAL; + return false; } if (wh_src && (err = ebt_mac_wormhash_check_integrity(wh_src))) { printk(KERN_WARNING "ebtables: among: src integrity fail: %x\n", -err); - return -EINVAL; + return false; } - return 0; + return true; } -static struct ebt_match filter_among __read_mostly = { - .name = EBT_AMONG_MATCH, - .match = ebt_filter_among, - .check = ebt_among_check, +static struct xt_match ebt_among_mt_reg __read_mostly = { + .name = "among", + .revision = 0, + .family = NFPROTO_BRIDGE, + .match = ebt_among_mt, + .checkentry = ebt_among_mt_check, + .matchsize = -1, /* special case */ .me = THIS_MODULE, }; static int __init ebt_among_init(void) { - return ebt_register_match(&filter_among); + return xt_register_match(&ebt_among_mt_reg); } static void __exit ebt_among_fini(void) { - ebt_unregister_match(&filter_among); + xt_unregister_match(&ebt_among_mt_reg); } module_init(ebt_among_init); diff --git a/net/bridge/netfilter/ebt_arp.c b/net/bridge/netfilter/ebt_arp.c index 7c535be75665..b7ad60419f9a 100644 --- a/net/bridge/netfilter/ebt_arp.c +++ b/net/bridge/netfilter/ebt_arp.c @@ -8,58 +8,58 @@ * April, 2002 * */ - -#include <linux/netfilter_bridge/ebtables.h> -#include <linux/netfilter_bridge/ebt_arp.h> #include <linux/if_arp.h> #include <linux/if_ether.h> #include <linux/module.h> +#include <linux/netfilter/x_tables.h> +#include <linux/netfilter_bridge/ebtables.h> +#include <linux/netfilter_bridge/ebt_arp.h> -static int ebt_filter_arp(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const void *data, unsigned int datalen) +static bool +ebt_arp_mt(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct ebt_arp_info *info = data; + const struct ebt_arp_info *info = par->matchinfo; const struct arphdr *ah; struct arphdr _arph; ah = skb_header_pointer(skb, 0, sizeof(_arph), &_arph); if (ah == NULL) - return EBT_NOMATCH; + return false; if (info->bitmask & EBT_ARP_OPCODE && FWINV(info->opcode != ah->ar_op, EBT_ARP_OPCODE)) - return EBT_NOMATCH; + return false; if (info->bitmask & EBT_ARP_HTYPE && FWINV(info->htype != ah->ar_hrd, EBT_ARP_HTYPE)) - return EBT_NOMATCH; + return false; if (info->bitmask & EBT_ARP_PTYPE && FWINV(info->ptype != ah->ar_pro, EBT_ARP_PTYPE)) - return EBT_NOMATCH; + return false; if (info->bitmask & (EBT_ARP_SRC_IP | EBT_ARP_DST_IP | EBT_ARP_GRAT)) { const __be32 *sap, *dap; __be32 saddr, daddr; if (ah->ar_pln != sizeof(__be32) || ah->ar_pro != htons(ETH_P_IP)) - return EBT_NOMATCH; + return false; sap = skb_header_pointer(skb, sizeof(struct arphdr) + ah->ar_hln, sizeof(saddr), &saddr); if (sap == NULL) - return EBT_NOMATCH; + return false; dap = skb_header_pointer(skb, sizeof(struct arphdr) + 2*ah->ar_hln+sizeof(saddr), sizeof(daddr), &daddr); if (dap == NULL) - return EBT_NOMATCH; + return false; if (info->bitmask & EBT_ARP_SRC_IP && FWINV(info->saddr != (*sap & info->smsk), EBT_ARP_SRC_IP)) - return EBT_NOMATCH; + return false; if (info->bitmask & EBT_ARP_DST_IP && FWINV(info->daddr != (*dap & info->dmsk), EBT_ARP_DST_IP)) - return EBT_NOMATCH; + return false; if (info->bitmask & EBT_ARP_GRAT && FWINV(*dap != *sap, EBT_ARP_GRAT)) - return EBT_NOMATCH; + return false; } if (info->bitmask & (EBT_ARP_SRC_MAC | EBT_ARP_DST_MAC)) { @@ -68,18 +68,18 @@ static int ebt_filter_arp(const struct sk_buff *skb, const struct net_device *in uint8_t verdict, i; if (ah->ar_hln != ETH_ALEN || ah->ar_hrd != htons(ARPHRD_ETHER)) - return EBT_NOMATCH; + return false; if (info->bitmask & EBT_ARP_SRC_MAC) { mp = skb_header_pointer(skb, sizeof(struct arphdr), sizeof(_mac), &_mac); if (mp == NULL) - return EBT_NOMATCH; + return false; verdict = 0; for (i = 0; i < 6; i++) verdict |= (mp[i] ^ info->smaddr[i]) & info->smmsk[i]; if (FWINV(verdict != 0, EBT_ARP_SRC_MAC)) - return EBT_NOMATCH; + return false; } if (info->bitmask & EBT_ARP_DST_MAC) { @@ -87,50 +87,51 @@ static int ebt_filter_arp(const struct sk_buff *skb, const struct net_device *in ah->ar_hln + ah->ar_pln, sizeof(_mac), &_mac); if (mp == NULL) - return EBT_NOMATCH; + return false; verdict = 0; for (i = 0; i < 6; i++) verdict |= (mp[i] ^ info->dmaddr[i]) & info->dmmsk[i]; if (FWINV(verdict != 0, EBT_ARP_DST_MAC)) - return EBT_NOMATCH; + return false; } } - return EBT_MATCH; + return true; } -static int ebt_arp_check(const char *tablename, unsigned int hookmask, - const struct ebt_entry *e, void *data, unsigned int datalen) +static bool ebt_arp_mt_check(const struct xt_mtchk_param *par) { - const struct ebt_arp_info *info = data; + const struct ebt_arp_info *info = par->matchinfo; + const struct ebt_entry *e = par->entryinfo; - if (datalen != EBT_ALIGN(sizeof(struct ebt_arp_info))) - return -EINVAL; if ((e->ethproto != htons(ETH_P_ARP) && e->ethproto != htons(ETH_P_RARP)) || e->invflags & EBT_IPROTO) - return -EINVAL; + return false; if (info->bitmask & ~EBT_ARP_MASK || info->invflags & ~EBT_ARP_MASK) - return -EINVAL; - return 0; + return false; + return true; } -static struct ebt_match filter_arp __read_mostly = { - .name = EBT_ARP_MATCH, - .match = ebt_filter_arp, - .check = ebt_arp_check, +static struct xt_match ebt_arp_mt_reg __read_mostly = { + .name = "arp", + .revision = 0, + .family = NFPROTO_BRIDGE, + .match = ebt_arp_mt, + .checkentry = ebt_arp_mt_check, + .matchsize = XT_ALIGN(sizeof(struct ebt_arp_info)), .me = THIS_MODULE, }; static int __init ebt_arp_init(void) { - return ebt_register_match(&filter_arp); + return xt_register_match(&ebt_arp_mt_reg); } static void __exit ebt_arp_fini(void) { - ebt_unregister_match(&filter_arp); + xt_unregister_match(&ebt_arp_mt_reg); } module_init(ebt_arp_init); diff --git a/net/bridge/netfilter/ebt_arpreply.c b/net/bridge/netfilter/ebt_arpreply.c index 0c4279590fc7..76584cd72e57 100644 --- a/net/bridge/netfilter/ebt_arpreply.c +++ b/net/bridge/netfilter/ebt_arpreply.c @@ -8,18 +8,17 @@ * August, 2003 * */ - -#include <linux/netfilter_bridge/ebtables.h> -#include <linux/netfilter_bridge/ebt_arpreply.h> #include <linux/if_arp.h> #include <net/arp.h> #include <linux/module.h> +#include <linux/netfilter/x_tables.h> +#include <linux/netfilter_bridge/ebtables.h> +#include <linux/netfilter_bridge/ebt_arpreply.h> -static int ebt_target_reply(struct sk_buff *skb, unsigned int hooknr, - const struct net_device *in, const struct net_device *out, - const void *data, unsigned int datalen) +static unsigned int +ebt_arpreply_tg(struct sk_buff *skb, const struct xt_target_param *par) { - struct ebt_arpreply_info *info = (void *)data; + const struct ebt_arpreply_info *info = par->targinfo; const __be32 *siptr, *diptr; __be32 _sip, _dip; const struct arphdr *ap; @@ -52,45 +51,45 @@ static int ebt_target_reply(struct sk_buff *skb, unsigned int hooknr, if (diptr == NULL) return EBT_DROP; - arp_send(ARPOP_REPLY, ETH_P_ARP, *siptr, (struct net_device *)in, + arp_send(ARPOP_REPLY, ETH_P_ARP, *siptr, (struct net_device *)par->in, *diptr, shp, info->mac, shp); return info->target; } -static int ebt_target_reply_check(const char *tablename, unsigned int hookmask, - const struct ebt_entry *e, void *data, unsigned int datalen) +static bool ebt_arpreply_tg_check(const struct xt_tgchk_param *par) { - const struct ebt_arpreply_info *info = data; + const struct ebt_arpreply_info *info = par->targinfo; + const struct ebt_entry *e = par->entryinfo; - if (datalen != EBT_ALIGN(sizeof(struct ebt_arpreply_info))) - return -EINVAL; if (BASE_CHAIN && info->target == EBT_RETURN) - return -EINVAL; + return false; if (e->ethproto != htons(ETH_P_ARP) || e->invflags & EBT_IPROTO) - return -EINVAL; - CLEAR_BASE_CHAIN_BIT; - if (strcmp(tablename, "nat") || hookmask & ~(1 << NF_BR_PRE_ROUTING)) - return -EINVAL; - return 0; + return false; + return true; } -static struct ebt_target reply_target __read_mostly = { - .name = EBT_ARPREPLY_TARGET, - .target = ebt_target_reply, - .check = ebt_target_reply_check, +static struct xt_target ebt_arpreply_tg_reg __read_mostly = { + .name = "arpreply", + .revision = 0, + .family = NFPROTO_BRIDGE, + .table = "nat", + .hooks = (1 << NF_BR_NUMHOOKS) | (1 << NF_BR_PRE_ROUTING), + .target = ebt_arpreply_tg, + .checkentry = ebt_arpreply_tg_check, + .targetsize = XT_ALIGN(sizeof(struct ebt_arpreply_info)), .me = THIS_MODULE, }; static int __init ebt_arpreply_init(void) { - return ebt_register_target(&reply_target); + return xt_register_target(&ebt_arpreply_tg_reg); } static void __exit ebt_arpreply_fini(void) { - ebt_unregister_target(&reply_target); + xt_unregister_target(&ebt_arpreply_tg_reg); } module_init(ebt_arpreply_init); diff --git a/net/bridge/netfilter/ebt_dnat.c b/net/bridge/netfilter/ebt_dnat.c index ca64c1cc1b47..6b49ea9e31fb 100644 --- a/net/bridge/netfilter/ebt_dnat.c +++ b/net/bridge/netfilter/ebt_dnat.c @@ -7,18 +7,17 @@ * June, 2002 * */ - +#include <linux/module.h> +#include <net/sock.h> #include <linux/netfilter.h> +#include <linux/netfilter/x_tables.h> #include <linux/netfilter_bridge/ebtables.h> #include <linux/netfilter_bridge/ebt_nat.h> -#include <linux/module.h> -#include <net/sock.h> -static int ebt_target_dnat(struct sk_buff *skb, unsigned int hooknr, - const struct net_device *in, const struct net_device *out, - const void *data, unsigned int datalen) +static unsigned int +ebt_dnat_tg(struct sk_buff *skb, const struct xt_target_param *par) { - const struct ebt_nat_info *info = data; + const struct ebt_nat_info *info = par->targinfo; if (!skb_make_writable(skb, 0)) return EBT_DROP; @@ -27,40 +26,46 @@ static int ebt_target_dnat(struct sk_buff *skb, unsigned int hooknr, return info->target; } -static int ebt_target_dnat_check(const char *tablename, unsigned int hookmask, - const struct ebt_entry *e, void *data, unsigned int datalen) +static bool ebt_dnat_tg_check(const struct xt_tgchk_param *par) { - const struct ebt_nat_info *info = data; + const struct ebt_nat_info *info = par->targinfo; + unsigned int hook_mask; if (BASE_CHAIN && info->target == EBT_RETURN) - return -EINVAL; - CLEAR_BASE_CHAIN_BIT; - if ( (strcmp(tablename, "nat") || - (hookmask & ~((1 << NF_BR_PRE_ROUTING) | (1 << NF_BR_LOCAL_OUT)))) && - (strcmp(tablename, "broute") || hookmask & ~(1 << NF_BR_BROUTING)) ) - return -EINVAL; - if (datalen != EBT_ALIGN(sizeof(struct ebt_nat_info))) - return -EINVAL; + return false; + + hook_mask = par->hook_mask & ~(1 << NF_BR_NUMHOOKS); + if ((strcmp(par->table, "nat") != 0 || + (hook_mask & ~((1 << NF_BR_PRE_ROUTING) | + (1 << NF_BR_LOCAL_OUT)))) && + (strcmp(par->table, "broute") != 0 || + hook_mask & ~(1 << NF_BR_BROUTING))) + return false; if (INVALID_TARGET) - return -EINVAL; - return 0; + return false; + return true; } -static struct ebt_target dnat __read_mostly = { - .name = EBT_DNAT_TARGET, - .target = ebt_target_dnat, - .check = ebt_target_dnat_check, +static struct xt_target ebt_dnat_tg_reg __read_mostly = { + .name = "dnat", + .revision = 0, + .family = NFPROTO_BRIDGE, + .hooks = (1 << NF_BR_NUMHOOKS) | (1 << NF_BR_PRE_ROUTING) | + (1 << NF_BR_LOCAL_OUT) | (1 << NF_BR_BROUTING), + .target = ebt_dnat_tg, + .checkentry = ebt_dnat_tg_check, + .targetsize = XT_ALIGN(sizeof(struct ebt_nat_info)), .me = THIS_MODULE, }; static int __init ebt_dnat_init(void) { - return ebt_register_target(&dnat); + return xt_register_target(&ebt_dnat_tg_reg); } static void __exit ebt_dnat_fini(void) { - ebt_unregister_target(&dnat); + xt_unregister_target(&ebt_dnat_tg_reg); } module_init(ebt_dnat_init); diff --git a/net/bridge/netfilter/ebt_ip.c b/net/bridge/netfilter/ebt_ip.c index 65caa00dcf2a..d771bbfbcbe6 100644 --- a/net/bridge/netfilter/ebt_ip.c +++ b/net/bridge/netfilter/ebt_ip.c @@ -11,24 +11,23 @@ * Innominate Security Technologies AG <mhopf@innominate.com> * September, 2002 */ - -#include <linux/netfilter_bridge/ebtables.h> -#include <linux/netfilter_bridge/ebt_ip.h> #include <linux/ip.h> #include <net/ip.h> #include <linux/in.h> #include <linux/module.h> +#include <linux/netfilter/x_tables.h> +#include <linux/netfilter_bridge/ebtables.h> +#include <linux/netfilter_bridge/ebt_ip.h> struct tcpudphdr { __be16 src; __be16 dst; }; -static int ebt_filter_ip(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const void *data, - unsigned int datalen) +static bool +ebt_ip_mt(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct ebt_ip_info *info = data; + const struct ebt_ip_info *info = par->matchinfo; const struct iphdr *ih; struct iphdr _iph; const struct tcpudphdr *pptr; @@ -36,92 +35,93 @@ static int ebt_filter_ip(const struct sk_buff *skb, const struct net_device *in, ih = skb_header_pointer(skb, 0, sizeof(_iph), &_iph); if (ih == NULL) - return EBT_NOMATCH; + return false; if (info->bitmask & EBT_IP_TOS && FWINV(info->tos != ih->tos, EBT_IP_TOS)) - return EBT_NOMATCH; + return false; if (info->bitmask & EBT_IP_SOURCE && FWINV((ih->saddr & info->smsk) != info->saddr, EBT_IP_SOURCE)) - return EBT_NOMATCH; + return false; if ((info->bitmask & EBT_IP_DEST) && FWINV((ih->daddr & info->dmsk) != info->daddr, EBT_IP_DEST)) - return EBT_NOMATCH; + return false; if (info->bitmask & EBT_IP_PROTO) { if (FWINV(info->protocol != ih->protocol, EBT_IP_PROTO)) - return EBT_NOMATCH; + return false; if (!(info->bitmask & EBT_IP_DPORT) && !(info->bitmask & EBT_IP_SPORT)) - return EBT_MATCH; + return true; if (ntohs(ih->frag_off) & IP_OFFSET) - return EBT_NOMATCH; + return false; pptr = skb_header_pointer(skb, ih->ihl*4, sizeof(_ports), &_ports); if (pptr == NULL) - return EBT_NOMATCH; + return false; if (info->bitmask & EBT_IP_DPORT) { u32 dst = ntohs(pptr->dst); if (FWINV(dst < info->dport[0] || dst > info->dport[1], EBT_IP_DPORT)) - return EBT_NOMATCH; + return false; } if (info->bitmask & EBT_IP_SPORT) { u32 src = ntohs(pptr->src); if (FWINV(src < info->sport[0] || src > info->sport[1], EBT_IP_SPORT)) - return EBT_NOMATCH; + return false; } } - return EBT_MATCH; + return true; } -static int ebt_ip_check(const char *tablename, unsigned int hookmask, - const struct ebt_entry *e, void *data, unsigned int datalen) +static bool ebt_ip_mt_check(const struct xt_mtchk_param *par) { - const struct ebt_ip_info *info = data; + const struct ebt_ip_info *info = par->matchinfo; + const struct ebt_entry *e = par->entryinfo; - if (datalen != EBT_ALIGN(sizeof(struct ebt_ip_info))) - return -EINVAL; if (e->ethproto != htons(ETH_P_IP) || e->invflags & EBT_IPROTO) - return -EINVAL; + return false; if (info->bitmask & ~EBT_IP_MASK || info->invflags & ~EBT_IP_MASK) - return -EINVAL; + return false; if (info->bitmask & (EBT_IP_DPORT | EBT_IP_SPORT)) { if (info->invflags & EBT_IP_PROTO) - return -EINVAL; + return false; if (info->protocol != IPPROTO_TCP && info->protocol != IPPROTO_UDP && info->protocol != IPPROTO_UDPLITE && info->protocol != IPPROTO_SCTP && info->protocol != IPPROTO_DCCP) - return -EINVAL; + return false; } if (info->bitmask & EBT_IP_DPORT && info->dport[0] > info->dport[1]) - return -EINVAL; + return false; if (info->bitmask & EBT_IP_SPORT && info->sport[0] > info->sport[1]) - return -EINVAL; - return 0; + return false; + return true; } -static struct ebt_match filter_ip __read_mostly = { - .name = EBT_IP_MATCH, - .match = ebt_filter_ip, - .check = ebt_ip_check, +static struct xt_match ebt_ip_mt_reg __read_mostly = { + .name = "ip", + .revision = 0, + .family = NFPROTO_BRIDGE, + .match = ebt_ip_mt, + .checkentry = ebt_ip_mt_check, + .matchsize = XT_ALIGN(sizeof(struct ebt_ip_info)), .me = THIS_MODULE, }; static int __init ebt_ip_init(void) { - return ebt_register_match(&filter_ip); + return xt_register_match(&ebt_ip_mt_reg); } static void __exit ebt_ip_fini(void) { - ebt_unregister_match(&filter_ip); + xt_unregister_match(&ebt_ip_mt_reg); } module_init(ebt_ip_init); diff --git a/net/bridge/netfilter/ebt_ip6.c b/net/bridge/netfilter/ebt_ip6.c index 36efb3a75249..784a6573876c 100644 --- a/net/bridge/netfilter/ebt_ip6.c +++ b/net/bridge/netfilter/ebt_ip6.c @@ -13,26 +13,24 @@ * * Jan, 2008 */ - -#include <linux/netfilter_bridge/ebtables.h> -#include <linux/netfilter_bridge/ebt_ip6.h> #include <linux/ipv6.h> #include <net/ipv6.h> #include <linux/in.h> #include <linux/module.h> #include <net/dsfield.h> +#include <linux/netfilter/x_tables.h> +#include <linux/netfilter_bridge/ebtables.h> +#include <linux/netfilter_bridge/ebt_ip6.h> struct tcpudphdr { __be16 src; __be16 dst; }; -static int ebt_filter_ip6(const struct sk_buff *skb, - const struct net_device *in, - const struct net_device *out, const void *data, - unsigned int datalen) +static bool +ebt_ip6_mt(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct ebt_ip6_info *info = (struct ebt_ip6_info *)data; + const struct ebt_ip6_info *info = par->matchinfo; const struct ipv6hdr *ih6; struct ipv6hdr _ip6h; const struct tcpudphdr *pptr; @@ -42,100 +40,100 @@ static int ebt_filter_ip6(const struct sk_buff *skb, ih6 = skb_header_pointer(skb, 0, sizeof(_ip6h), &_ip6h); if (ih6 == NULL) - return EBT_NOMATCH; + return false; if (info->bitmask & EBT_IP6_TCLASS && FWINV(info->tclass != ipv6_get_dsfield(ih6), EBT_IP6_TCLASS)) - return EBT_NOMATCH; + return false; for (i = 0; i < 4; i++) tmp_addr.in6_u.u6_addr32[i] = ih6->saddr.in6_u.u6_addr32[i] & info->smsk.in6_u.u6_addr32[i]; if (info->bitmask & EBT_IP6_SOURCE && FWINV((ipv6_addr_cmp(&tmp_addr, &info->saddr) != 0), EBT_IP6_SOURCE)) - return EBT_NOMATCH; + return false; for (i = 0; i < 4; i++) tmp_addr.in6_u.u6_addr32[i] = ih6->daddr.in6_u.u6_addr32[i] & info->dmsk.in6_u.u6_addr32[i]; if (info->bitmask & EBT_IP6_DEST && FWINV((ipv6_addr_cmp(&tmp_addr, &info->daddr) != 0), EBT_IP6_DEST)) - return EBT_NOMATCH; + return false; if (info->bitmask & EBT_IP6_PROTO) { uint8_t nexthdr = ih6->nexthdr; int offset_ph; offset_ph = ipv6_skip_exthdr(skb, sizeof(_ip6h), &nexthdr); if (offset_ph == -1) - return EBT_NOMATCH; + return false; if (FWINV(info->protocol != nexthdr, EBT_IP6_PROTO)) - return EBT_NOMATCH; + return false; if (!(info->bitmask & EBT_IP6_DPORT) && !(info->bitmask & EBT_IP6_SPORT)) - return EBT_MATCH; + return true; pptr = skb_header_pointer(skb, offset_ph, sizeof(_ports), &_ports); if (pptr == NULL) - return EBT_NOMATCH; + return false; if (info->bitmask & EBT_IP6_DPORT) { u32 dst = ntohs(pptr->dst); if (FWINV(dst < info->dport[0] || dst > info->dport[1], EBT_IP6_DPORT)) - return EBT_NOMATCH; + return false; } if (info->bitmask & EBT_IP6_SPORT) { u32 src = ntohs(pptr->src); if (FWINV(src < info->sport[0] || src > info->sport[1], EBT_IP6_SPORT)) - return EBT_NOMATCH; + return false; } - return EBT_MATCH; + return true; } - return EBT_MATCH; + return true; } -static int ebt_ip6_check(const char *tablename, unsigned int hookmask, - const struct ebt_entry *e, void *data, unsigned int datalen) +static bool ebt_ip6_mt_check(const struct xt_mtchk_param *par) { - struct ebt_ip6_info *info = (struct ebt_ip6_info *)data; + const struct ebt_entry *e = par->entryinfo; + struct ebt_ip6_info *info = par->matchinfo; - if (datalen != EBT_ALIGN(sizeof(struct ebt_ip6_info))) - return -EINVAL; if (e->ethproto != htons(ETH_P_IPV6) || e->invflags & EBT_IPROTO) - return -EINVAL; + return false; if (info->bitmask & ~EBT_IP6_MASK || info->invflags & ~EBT_IP6_MASK) - return -EINVAL; + return false; if (info->bitmask & (EBT_IP6_DPORT | EBT_IP6_SPORT)) { if (info->invflags & EBT_IP6_PROTO) - return -EINVAL; + return false; if (info->protocol != IPPROTO_TCP && info->protocol != IPPROTO_UDP && info->protocol != IPPROTO_UDPLITE && info->protocol != IPPROTO_SCTP && info->protocol != IPPROTO_DCCP) - return -EINVAL; + return false; } if (info->bitmask & EBT_IP6_DPORT && info->dport[0] > info->dport[1]) - return -EINVAL; + return false; if (info->bitmask & EBT_IP6_SPORT && info->sport[0] > info->sport[1]) - return -EINVAL; - return 0; + return false; + return true; } -static struct ebt_match filter_ip6 = -{ - .name = EBT_IP6_MATCH, - .match = ebt_filter_ip6, - .check = ebt_ip6_check, +static struct xt_match ebt_ip6_mt_reg __read_mostly = { + .name = "ip6", + .revision = 0, + .family = NFPROTO_BRIDGE, + .match = ebt_ip6_mt, + .checkentry = ebt_ip6_mt_check, + .matchsize = XT_ALIGN(sizeof(struct ebt_ip6_info)), .me = THIS_MODULE, }; static int __init ebt_ip6_init(void) { - return ebt_register_match(&filter_ip6); + return xt_register_match(&ebt_ip6_mt_reg); } static void __exit ebt_ip6_fini(void) { - ebt_unregister_match(&filter_ip6); + xt_unregister_match(&ebt_ip6_mt_reg); } module_init(ebt_ip6_init); diff --git a/net/bridge/netfilter/ebt_limit.c b/net/bridge/netfilter/ebt_limit.c index 8cbdc01c253e..f7bd9192ff0c 100644 --- a/net/bridge/netfilter/ebt_limit.c +++ b/net/bridge/netfilter/ebt_limit.c @@ -10,13 +10,12 @@ * September, 2003 * */ - -#include <linux/netfilter_bridge/ebtables.h> -#include <linux/netfilter_bridge/ebt_limit.h> #include <linux/module.h> - #include <linux/netdevice.h> #include <linux/spinlock.h> +#include <linux/netfilter/x_tables.h> +#include <linux/netfilter_bridge/ebtables.h> +#include <linux/netfilter_bridge/ebt_limit.h> static DEFINE_SPINLOCK(limit_lock); @@ -31,11 +30,10 @@ static DEFINE_SPINLOCK(limit_lock); #define CREDITS_PER_JIFFY POW2_BELOW32(MAX_CPJ) -static int ebt_limit_match(const struct sk_buff *skb, - const struct net_device *in, const struct net_device *out, - const void *data, unsigned int datalen) +static bool +ebt_limit_mt(const struct sk_buff *skb, const struct xt_match_param *par) { - struct ebt_limit_info *info = (struct ebt_limit_info *)data; + struct ebt_limit_info *info = (void *)par->matchinfo; unsigned long now = jiffies; spin_lock_bh(&limit_lock); @@ -47,11 +45,11 @@ static int ebt_limit_match(const struct sk_buff *skb, /* We're not limited. */ info->credit -= info->cost; spin_unlock_bh(&limit_lock); - return EBT_MATCH; + return true; } spin_unlock_bh(&limit_lock); - return EBT_NOMATCH; + return false; } /* Precision saver. */ @@ -66,20 +64,16 @@ user2credits(u_int32_t user) return (user * HZ * CREDITS_PER_JIFFY) / EBT_LIMIT_SCALE; } -static int ebt_limit_check(const char *tablename, unsigned int hookmask, - const struct ebt_entry *e, void *data, unsigned int datalen) +static bool ebt_limit_mt_check(const struct xt_mtchk_param *par) { - struct ebt_limit_info *info = data; - - if (datalen != EBT_ALIGN(sizeof(struct ebt_limit_info))) - return -EINVAL; + struct ebt_limit_info *info = par->matchinfo; /* Check for overflow. */ if (info->burst == 0 || user2credits(info->avg * info->burst) < user2credits(info->avg)) { printk("Overflow in ebt_limit, try lower: %u/%u\n", info->avg, info->burst); - return -EINVAL; + return false; } /* User avg in seconds * EBT_LIMIT_SCALE: convert to jiffies * 128. */ @@ -87,24 +81,27 @@ static int ebt_limit_check(const char *tablename, unsigned int hookmask, info->credit = user2credits(info->avg * info->burst); info->credit_cap = user2credits(info->avg * info->burst); info->cost = user2credits(info->avg); - return 0; + return true; } -static struct ebt_match ebt_limit_reg __read_mostly = { - .name = EBT_LIMIT_MATCH, - .match = ebt_limit_match, - .check = ebt_limit_check, +static struct xt_match ebt_limit_mt_reg __read_mostly = { + .name = "limit", + .revision = 0, + .family = NFPROTO_BRIDGE, + .match = ebt_limit_mt, + .checkentry = ebt_limit_mt_check, + .matchsize = XT_ALIGN(sizeof(struct ebt_limit_info)), .me = THIS_MODULE, }; static int __init ebt_limit_init(void) { - return ebt_register_match(&ebt_limit_reg); + return xt_register_match(&ebt_limit_mt_reg); } static void __exit ebt_limit_fini(void) { - ebt_unregister_match(&ebt_limit_reg); + xt_unregister_match(&ebt_limit_mt_reg); } module_init(ebt_limit_init); diff --git a/net/bridge/netfilter/ebt_log.c b/net/bridge/netfilter/ebt_log.c index 2f430d4ae911..3d33c608906a 100644 --- a/net/bridge/netfilter/ebt_log.c +++ b/net/bridge/netfilter/ebt_log.c @@ -8,10 +8,6 @@ * April, 2002 * */ - -#include <linux/netfilter_bridge/ebtables.h> -#include <linux/netfilter_bridge/ebt_log.h> -#include <linux/netfilter.h> #include <linux/module.h> #include <linux/ip.h> #include <linux/in.h> @@ -21,22 +17,23 @@ #include <linux/ipv6.h> #include <net/ipv6.h> #include <linux/in6.h> +#include <linux/netfilter/x_tables.h> +#include <linux/netfilter_bridge/ebtables.h> +#include <linux/netfilter_bridge/ebt_log.h> +#include <linux/netfilter.h> static DEFINE_SPINLOCK(ebt_log_lock); -static int ebt_log_check(const char *tablename, unsigned int hookmask, - const struct ebt_entry *e, void *data, unsigned int datalen) +static bool ebt_log_tg_check(const struct xt_tgchk_param *par) { - struct ebt_log_info *info = data; + struct ebt_log_info *info = par->targinfo; - if (datalen != EBT_ALIGN(sizeof(struct ebt_log_info))) - return -EINVAL; if (info->bitmask & ~EBT_LOG_MASK) - return -EINVAL; + return false; if (info->loglevel >= 8) - return -EINVAL; + return false; info->prefix[EBT_LOG_PREFIX_SIZE - 1] = '\0'; - return 0; + return true; } struct tcpudphdr @@ -84,7 +81,7 @@ print_ports(const struct sk_buff *skb, uint8_t protocol, int offset) #define myNIPQUAD(a) a[0], a[1], a[2], a[3] static void -ebt_log_packet(unsigned int pf, unsigned int hooknum, +ebt_log_packet(u_int8_t pf, unsigned int hooknum, const struct sk_buff *skb, const struct net_device *in, const struct net_device *out, const struct nf_loginfo *loginfo, const char *prefix) @@ -194,11 +191,10 @@ out: } -static void ebt_log(const struct sk_buff *skb, unsigned int hooknr, - const struct net_device *in, const struct net_device *out, - const void *data, unsigned int datalen) +static unsigned int +ebt_log_tg(struct sk_buff *skb, const struct xt_target_param *par) { - const struct ebt_log_info *info = data; + const struct ebt_log_info *info = par->targinfo; struct nf_loginfo li; li.type = NF_LOG_TYPE_LOG; @@ -206,18 +202,21 @@ static void ebt_log(const struct sk_buff *skb, unsigned int hooknr, li.u.log.logflags = info->bitmask; if (info->bitmask & EBT_LOG_NFLOG) - nf_log_packet(PF_BRIDGE, hooknr, skb, in, out, &li, - "%s", info->prefix); + nf_log_packet(NFPROTO_BRIDGE, par->hooknum, skb, par->in, + par->out, &li, "%s", info->prefix); else - ebt_log_packet(PF_BRIDGE, hooknr, skb, in, out, &li, - info->prefix); + ebt_log_packet(NFPROTO_BRIDGE, par->hooknum, skb, par->in, + par->out, &li, info->prefix); + return EBT_CONTINUE; } -static struct ebt_watcher log = -{ - .name = EBT_LOG_WATCHER, - .watcher = ebt_log, - .check = ebt_log_check, +static struct xt_target ebt_log_tg_reg __read_mostly = { + .name = "log", + .revision = 0, + .family = NFPROTO_BRIDGE, + .target = ebt_log_tg, + .checkentry = ebt_log_tg_check, + .targetsize = XT_ALIGN(sizeof(struct ebt_log_info)), .me = THIS_MODULE, }; @@ -231,17 +230,17 @@ static int __init ebt_log_init(void) { int ret; - ret = ebt_register_watcher(&log); + ret = xt_register_target(&ebt_log_tg_reg); if (ret < 0) return ret; - nf_log_register(PF_BRIDGE, &ebt_log_logger); + nf_log_register(NFPROTO_BRIDGE, &ebt_log_logger); return 0; } static void __exit ebt_log_fini(void) { nf_log_unregister(&ebt_log_logger); - ebt_unregister_watcher(&log); + xt_unregister_target(&ebt_log_tg_reg); } module_init(ebt_log_init); diff --git a/net/bridge/netfilter/ebt_mark.c b/net/bridge/netfilter/ebt_mark.c index 36723f47db0a..2fee7e8e2e93 100644 --- a/net/bridge/netfilter/ebt_mark.c +++ b/net/bridge/netfilter/ebt_mark.c @@ -13,15 +13,15 @@ * Marking a frame doesn't really change anything in the frame anyway. */ +#include <linux/module.h> +#include <linux/netfilter/x_tables.h> #include <linux/netfilter_bridge/ebtables.h> #include <linux/netfilter_bridge/ebt_mark_t.h> -#include <linux/module.h> -static int ebt_target_mark(struct sk_buff *skb, unsigned int hooknr, - const struct net_device *in, const struct net_device *out, - const void *data, unsigned int datalen) +static unsigned int +ebt_mark_tg(struct sk_buff *skb, const struct xt_target_param *par) { - const struct ebt_mark_t_info *info = data; + const struct ebt_mark_t_info *info = par->targinfo; int action = info->target & -16; if (action == MARK_SET_VALUE) @@ -36,42 +36,41 @@ static int ebt_target_mark(struct sk_buff *skb, unsigned int hooknr, return info->target | ~EBT_VERDICT_BITS; } -static int ebt_target_mark_check(const char *tablename, unsigned int hookmask, - const struct ebt_entry *e, void *data, unsigned int datalen) +static bool ebt_mark_tg_check(const struct xt_tgchk_param *par) { - const struct ebt_mark_t_info *info = data; + const struct ebt_mark_t_info *info = par->targinfo; int tmp; - if (datalen != EBT_ALIGN(sizeof(struct ebt_mark_t_info))) - return -EINVAL; tmp = info->target | ~EBT_VERDICT_BITS; if (BASE_CHAIN && tmp == EBT_RETURN) - return -EINVAL; - CLEAR_BASE_CHAIN_BIT; + return false; if (tmp < -NUM_STANDARD_TARGETS || tmp >= 0) - return -EINVAL; + return false; tmp = info->target & ~EBT_VERDICT_BITS; if (tmp != MARK_SET_VALUE && tmp != MARK_OR_VALUE && tmp != MARK_AND_VALUE && tmp != MARK_XOR_VALUE) - return -EINVAL; - return 0; + return false; + return true; } -static struct ebt_target mark_target __read_mostly = { - .name = EBT_MARK_TARGET, - .target = ebt_target_mark, - .check = ebt_target_mark_check, +static struct xt_target ebt_mark_tg_reg __read_mostly = { + .name = "mark", + .revision = 0, + .family = NFPROTO_BRIDGE, + .target = ebt_mark_tg, + .checkentry = ebt_mark_tg_check, + .targetsize = XT_ALIGN(sizeof(struct ebt_mark_t_info)), .me = THIS_MODULE, }; static int __init ebt_mark_init(void) { - return ebt_register_target(&mark_target); + return xt_register_target(&ebt_mark_tg_reg); } static void __exit ebt_mark_fini(void) { - ebt_unregister_target(&mark_target); + xt_unregister_target(&ebt_mark_tg_reg); } module_init(ebt_mark_init); diff --git a/net/bridge/netfilter/ebt_mark_m.c b/net/bridge/netfilter/ebt_mark_m.c index 9b0a4543861f..ea570f214b1d 100644 --- a/net/bridge/netfilter/ebt_mark_m.c +++ b/net/bridge/netfilter/ebt_mark_m.c @@ -7,53 +7,52 @@ * July, 2002 * */ - +#include <linux/module.h> +#include <linux/netfilter/x_tables.h> #include <linux/netfilter_bridge/ebtables.h> #include <linux/netfilter_bridge/ebt_mark_m.h> -#include <linux/module.h> -static int ebt_filter_mark(const struct sk_buff *skb, - const struct net_device *in, const struct net_device *out, const void *data, - unsigned int datalen) +static bool +ebt_mark_mt(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct ebt_mark_m_info *info = data; + const struct ebt_mark_m_info *info = par->matchinfo; if (info->bitmask & EBT_MARK_OR) - return !(!!(skb->mark & info->mask) ^ info->invert); - return !(((skb->mark & info->mask) == info->mark) ^ info->invert); + return !!(skb->mark & info->mask) ^ info->invert; + return ((skb->mark & info->mask) == info->mark) ^ info->invert; } -static int ebt_mark_check(const char *tablename, unsigned int hookmask, - const struct ebt_entry *e, void *data, unsigned int datalen) +static bool ebt_mark_mt_check(const struct xt_mtchk_param *par) { - const struct ebt_mark_m_info *info = data; + const struct ebt_mark_m_info *info = par->matchinfo; - if (datalen != EBT_ALIGN(sizeof(struct ebt_mark_m_info))) - return -EINVAL; if (info->bitmask & ~EBT_MARK_MASK) - return -EINVAL; + return false; if ((info->bitmask & EBT_MARK_OR) && (info->bitmask & EBT_MARK_AND)) - return -EINVAL; + return false; if (!info->bitmask) - return -EINVAL; - return 0; + return false; + return true; } -static struct ebt_match filter_mark __read_mostly = { - .name = EBT_MARK_MATCH, - .match = ebt_filter_mark, - .check = ebt_mark_check, +static struct xt_match ebt_mark_mt_reg __read_mostly = { + .name = "mark_m", + .revision = 0, + .family = NFPROTO_BRIDGE, + .match = ebt_mark_mt, + .checkentry = ebt_mark_mt_check, + .matchsize = XT_ALIGN(sizeof(struct ebt_mark_m_info)), .me = THIS_MODULE, }; static int __init ebt_mark_m_init(void) { - return ebt_register_match(&filter_mark); + return xt_register_match(&ebt_mark_mt_reg); } static void __exit ebt_mark_m_fini(void) { - ebt_unregister_match(&filter_mark); + xt_unregister_match(&ebt_mark_mt_reg); } module_init(ebt_mark_m_init); diff --git a/net/bridge/netfilter/ebt_nflog.c b/net/bridge/netfilter/ebt_nflog.c index 8e799aa9e560..2a63d996dd4e 100644 --- a/net/bridge/netfilter/ebt_nflog.c +++ b/net/bridge/netfilter/ebt_nflog.c @@ -14,17 +14,15 @@ #include <linux/module.h> #include <linux/spinlock.h> +#include <linux/netfilter/x_tables.h> #include <linux/netfilter_bridge/ebtables.h> #include <linux/netfilter_bridge/ebt_nflog.h> #include <net/netfilter/nf_log.h> -static void ebt_nflog(const struct sk_buff *skb, - unsigned int hooknr, - const struct net_device *in, - const struct net_device *out, - const void *data, unsigned int datalen) +static unsigned int +ebt_nflog_tg(struct sk_buff *skb, const struct xt_target_param *par) { - struct ebt_nflog_info *info = (struct ebt_nflog_info *)data; + const struct ebt_nflog_info *info = par->targinfo; struct nf_loginfo li; li.type = NF_LOG_TYPE_ULOG; @@ -32,39 +30,39 @@ static void ebt_nflog(const struct sk_buff *skb, li.u.ulog.group = info->group; li.u.ulog.qthreshold = info->threshold; - nf_log_packet(PF_BRIDGE, hooknr, skb, in, out, &li, "%s", info->prefix); + nf_log_packet(PF_BRIDGE, par->hooknum, skb, par->in, par->out, + &li, "%s", info->prefix); + return EBT_CONTINUE; } -static int ebt_nflog_check(const char *tablename, - unsigned int hookmask, - const struct ebt_entry *e, - void *data, unsigned int datalen) +static bool ebt_nflog_tg_check(const struct xt_tgchk_param *par) { - struct ebt_nflog_info *info = (struct ebt_nflog_info *)data; + struct ebt_nflog_info *info = par->targinfo; - if (datalen != EBT_ALIGN(sizeof(struct ebt_nflog_info))) - return -EINVAL; if (info->flags & ~EBT_NFLOG_MASK) - return -EINVAL; + return false; info->prefix[EBT_NFLOG_PREFIX_SIZE - 1] = '\0'; - return 0; + return true; } -static struct ebt_watcher nflog __read_mostly = { - .name = EBT_NFLOG_WATCHER, - .watcher = ebt_nflog, - .check = ebt_nflog_check, - .me = THIS_MODULE, +static struct xt_target ebt_nflog_tg_reg __read_mostly = { + .name = "nflog", + .revision = 0, + .family = NFPROTO_BRIDGE, + .target = ebt_nflog_tg, + .checkentry = ebt_nflog_tg_check, + .targetsize = XT_ALIGN(sizeof(struct ebt_nflog_info)), + .me = THIS_MODULE, }; static int __init ebt_nflog_init(void) { - return ebt_register_watcher(&nflog); + return xt_register_target(&ebt_nflog_tg_reg); } static void __exit ebt_nflog_fini(void) { - ebt_unregister_watcher(&nflog); + xt_unregister_target(&ebt_nflog_tg_reg); } module_init(ebt_nflog_init); diff --git a/net/bridge/netfilter/ebt_pkttype.c b/net/bridge/netfilter/ebt_pkttype.c index 676db32df3d1..883e96e2a542 100644 --- a/net/bridge/netfilter/ebt_pkttype.c +++ b/net/bridge/netfilter/ebt_pkttype.c @@ -7,50 +7,47 @@ * April, 2003 * */ - +#include <linux/module.h> +#include <linux/netfilter/x_tables.h> #include <linux/netfilter_bridge/ebtables.h> #include <linux/netfilter_bridge/ebt_pkttype.h> -#include <linux/module.h> -static int ebt_filter_pkttype(const struct sk_buff *skb, - const struct net_device *in, - const struct net_device *out, - const void *data, - unsigned int datalen) +static bool +ebt_pkttype_mt(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct ebt_pkttype_info *info = data; + const struct ebt_pkttype_info *info = par->matchinfo; - return (skb->pkt_type != info->pkt_type) ^ info->invert; + return (skb->pkt_type == info->pkt_type) ^ info->invert; } -static int ebt_pkttype_check(const char *tablename, unsigned int hookmask, - const struct ebt_entry *e, void *data, unsigned int datalen) +static bool ebt_pkttype_mt_check(const struct xt_mtchk_param *par) { - const struct ebt_pkttype_info *info = data; + const struct ebt_pkttype_info *info = par->matchinfo; - if (datalen != EBT_ALIGN(sizeof(struct ebt_pkttype_info))) - return -EINVAL; if (info->invert != 0 && info->invert != 1) - return -EINVAL; + return false; /* Allow any pkt_type value */ - return 0; + return true; } -static struct ebt_match filter_pkttype __read_mostly = { - .name = EBT_PKTTYPE_MATCH, - .match = ebt_filter_pkttype, - .check = ebt_pkttype_check, +static struct xt_match ebt_pkttype_mt_reg __read_mostly = { + .name = "pkttype", + .revision = 0, + .family = NFPROTO_BRIDGE, + .match = ebt_pkttype_mt, + .checkentry = ebt_pkttype_mt_check, + .matchsize = XT_ALIGN(sizeof(struct ebt_pkttype_info)), .me = THIS_MODULE, }; static int __init ebt_pkttype_init(void) { - return ebt_register_match(&filter_pkttype); + return xt_register_match(&ebt_pkttype_mt_reg); } static void __exit ebt_pkttype_fini(void) { - ebt_unregister_match(&filter_pkttype); + xt_unregister_match(&ebt_pkttype_mt_reg); } module_init(ebt_pkttype_init); diff --git a/net/bridge/netfilter/ebt_redirect.c b/net/bridge/netfilter/ebt_redirect.c index b8afe850cf1e..c8a49f7a57ba 100644 --- a/net/bridge/netfilter/ebt_redirect.c +++ b/net/bridge/netfilter/ebt_redirect.c @@ -7,65 +7,70 @@ * April, 2002 * */ - -#include <linux/netfilter.h> -#include <linux/netfilter_bridge/ebtables.h> -#include <linux/netfilter_bridge/ebt_redirect.h> #include <linux/module.h> #include <net/sock.h> #include "../br_private.h" +#include <linux/netfilter.h> +#include <linux/netfilter/x_tables.h> +#include <linux/netfilter_bridge/ebtables.h> +#include <linux/netfilter_bridge/ebt_redirect.h> -static int ebt_target_redirect(struct sk_buff *skb, unsigned int hooknr, - const struct net_device *in, const struct net_device *out, - const void *data, unsigned int datalen) +static unsigned int +ebt_redirect_tg(struct sk_buff *skb, const struct xt_target_param *par) { - const struct ebt_redirect_info *info = data; + const struct ebt_redirect_info *info = par->targinfo; if (!skb_make_writable(skb, 0)) return EBT_DROP; - if (hooknr != NF_BR_BROUTING) + if (par->hooknum != NF_BR_BROUTING) memcpy(eth_hdr(skb)->h_dest, - in->br_port->br->dev->dev_addr, ETH_ALEN); + par->in->br_port->br->dev->dev_addr, ETH_ALEN); else - memcpy(eth_hdr(skb)->h_dest, in->dev_addr, ETH_ALEN); + memcpy(eth_hdr(skb)->h_dest, par->in->dev_addr, ETH_ALEN); skb->pkt_type = PACKET_HOST; return info->target; } -static int ebt_target_redirect_check(const char *tablename, unsigned int hookmask, - const struct ebt_entry *e, void *data, unsigned int datalen) +static bool ebt_redirect_tg_check(const struct xt_tgchk_param *par) { - const struct ebt_redirect_info *info = data; + const struct ebt_redirect_info *info = par->targinfo; + unsigned int hook_mask; - if (datalen != EBT_ALIGN(sizeof(struct ebt_redirect_info))) - return -EINVAL; if (BASE_CHAIN && info->target == EBT_RETURN) - return -EINVAL; - CLEAR_BASE_CHAIN_BIT; - if ( (strcmp(tablename, "nat") || hookmask & ~(1 << NF_BR_PRE_ROUTING)) && - (strcmp(tablename, "broute") || hookmask & ~(1 << NF_BR_BROUTING)) ) - return -EINVAL; + return false; + + hook_mask = par->hook_mask & ~(1 << NF_BR_NUMHOOKS); + if ((strcmp(par->table, "nat") != 0 || + hook_mask & ~(1 << NF_BR_PRE_ROUTING)) && + (strcmp(par->table, "broute") != 0 || + hook_mask & ~(1 << NF_BR_BROUTING))) + return false; if (INVALID_TARGET) - return -EINVAL; - return 0; + return false; + return true; } -static struct ebt_target redirect_target __read_mostly = { - .name = EBT_REDIRECT_TARGET, - .target = ebt_target_redirect, - .check = ebt_target_redirect_check, +static struct xt_target ebt_redirect_tg_reg __read_mostly = { + .name = "redirect", + .revision = 0, + .family = NFPROTO_BRIDGE, + .hooks = (1 << NF_BR_NUMHOOKS) | (1 << NF_BR_PRE_ROUTING) | + (1 << NF_BR_BROUTING), + .target = ebt_redirect_tg, + .checkentry = ebt_redirect_tg_check, + .targetsize = XT_ALIGN(sizeof(struct ebt_redirect_info)), .me = THIS_MODULE, }; static int __init ebt_redirect_init(void) { - return ebt_register_target(&redirect_target); + return xt_register_target(&ebt_redirect_tg_reg); } static void __exit ebt_redirect_fini(void) { - ebt_unregister_target(&redirect_target); + xt_unregister_target(&ebt_redirect_tg_reg); } module_init(ebt_redirect_init); diff --git a/net/bridge/netfilter/ebt_snat.c b/net/bridge/netfilter/ebt_snat.c index 5425333dda03..8d04d4c302bd 100644 --- a/net/bridge/netfilter/ebt_snat.c +++ b/net/bridge/netfilter/ebt_snat.c @@ -7,20 +7,19 @@ * June, 2002 * */ - -#include <linux/netfilter.h> -#include <linux/netfilter_bridge/ebtables.h> -#include <linux/netfilter_bridge/ebt_nat.h> #include <linux/module.h> #include <net/sock.h> #include <linux/if_arp.h> #include <net/arp.h> +#include <linux/netfilter.h> +#include <linux/netfilter/x_tables.h> +#include <linux/netfilter_bridge/ebtables.h> +#include <linux/netfilter_bridge/ebt_nat.h> -static int ebt_target_snat(struct sk_buff *skb, unsigned int hooknr, - const struct net_device *in, const struct net_device *out, - const void *data, unsigned int datalen) +static unsigned int +ebt_snat_tg(struct sk_buff *skb, const struct xt_target_param *par) { - const struct ebt_nat_info *info = data; + const struct ebt_nat_info *info = par->targinfo; if (!skb_make_writable(skb, 0)) return EBT_DROP; @@ -43,46 +42,43 @@ out: return info->target | ~EBT_VERDICT_BITS; } -static int ebt_target_snat_check(const char *tablename, unsigned int hookmask, - const struct ebt_entry *e, void *data, unsigned int datalen) +static bool ebt_snat_tg_check(const struct xt_tgchk_param *par) { - const struct ebt_nat_info *info = data; + const struct ebt_nat_info *info = par->targinfo; int tmp; - if (datalen != EBT_ALIGN(sizeof(struct ebt_nat_info))) - return -EINVAL; tmp = info->target | ~EBT_VERDICT_BITS; if (BASE_CHAIN && tmp == EBT_RETURN) - return -EINVAL; - CLEAR_BASE_CHAIN_BIT; - if (strcmp(tablename, "nat")) - return -EINVAL; - if (hookmask & ~(1 << NF_BR_POST_ROUTING)) - return -EINVAL; + return false; if (tmp < -NUM_STANDARD_TARGETS || tmp >= 0) - return -EINVAL; + return false; tmp = info->target | EBT_VERDICT_BITS; if ((tmp & ~NAT_ARP_BIT) != ~NAT_ARP_BIT) - return -EINVAL; - return 0; + return false; + return true; } -static struct ebt_target snat __read_mostly = { - .name = EBT_SNAT_TARGET, - .target = ebt_target_snat, - .check = ebt_target_snat_check, +static struct xt_target ebt_snat_tg_reg __read_mostly = { + .name = "snat", + .revision = 0, + .family = NFPROTO_BRIDGE, + .table = "nat", + .hooks = (1 << NF_BR_NUMHOOKS) | (1 << NF_BR_POST_ROUTING), + .target = ebt_snat_tg, + .checkentry = ebt_snat_tg_check, + .targetsize = XT_ALIGN(sizeof(struct ebt_nat_info)), .me = THIS_MODULE, }; static int __init ebt_snat_init(void) { - return ebt_register_target(&snat); + return xt_register_target(&ebt_snat_tg_reg); } static void __exit ebt_snat_fini(void) { - ebt_unregister_target(&snat); + xt_unregister_target(&ebt_snat_tg_reg); } module_init(ebt_snat_init); diff --git a/net/bridge/netfilter/ebt_stp.c b/net/bridge/netfilter/ebt_stp.c index 40f36d37607d..48527e621626 100644 --- a/net/bridge/netfilter/ebt_stp.c +++ b/net/bridge/netfilter/ebt_stp.c @@ -7,11 +7,11 @@ * * July, 2003 */ - -#include <linux/netfilter_bridge/ebtables.h> -#include <linux/netfilter_bridge/ebt_stp.h> #include <linux/etherdevice.h> #include <linux/module.h> +#include <linux/netfilter/x_tables.h> +#include <linux/netfilter_bridge/ebtables.h> +#include <linux/netfilter_bridge/ebt_stp.h> #define BPDU_TYPE_CONFIG 0 #define BPDU_TYPE_TCN 0x80 @@ -40,7 +40,7 @@ struct stp_config_pdu { #define NR16(p) (p[0] << 8 | p[1]) #define NR32(p) ((p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3]) -static int ebt_filter_config(const struct ebt_stp_info *info, +static bool ebt_filter_config(const struct ebt_stp_info *info, const struct stp_config_pdu *stpc) { const struct ebt_stp_config_info *c; @@ -51,12 +51,12 @@ static int ebt_filter_config(const struct ebt_stp_info *info, c = &info->config; if ((info->bitmask & EBT_STP_FLAGS) && FWINV(c->flags != stpc->flags, EBT_STP_FLAGS)) - return EBT_NOMATCH; + return false; if (info->bitmask & EBT_STP_ROOTPRIO) { v16 = NR16(stpc->root); if (FWINV(v16 < c->root_priol || v16 > c->root_priou, EBT_STP_ROOTPRIO)) - return EBT_NOMATCH; + return false; } if (info->bitmask & EBT_STP_ROOTADDR) { verdict = 0; @@ -64,19 +64,19 @@ static int ebt_filter_config(const struct ebt_stp_info *info, verdict |= (stpc->root[2+i] ^ c->root_addr[i]) & c->root_addrmsk[i]; if (FWINV(verdict != 0, EBT_STP_ROOTADDR)) - return EBT_NOMATCH; + return false; } if (info->bitmask & EBT_STP_ROOTCOST) { v32 = NR32(stpc->root_cost); if (FWINV(v32 < c->root_costl || v32 > c->root_costu, EBT_STP_ROOTCOST)) - return EBT_NOMATCH; + return false; } if (info->bitmask & EBT_STP_SENDERPRIO) { v16 = NR16(stpc->sender); if (FWINV(v16 < c->sender_priol || v16 > c->sender_priou, EBT_STP_SENDERPRIO)) - return EBT_NOMATCH; + return false; } if (info->bitmask & EBT_STP_SENDERADDR) { verdict = 0; @@ -84,60 +84,60 @@ static int ebt_filter_config(const struct ebt_stp_info *info, verdict |= (stpc->sender[2+i] ^ c->sender_addr[i]) & c->sender_addrmsk[i]; if (FWINV(verdict != 0, EBT_STP_SENDERADDR)) - return EBT_NOMATCH; + return false; } if (info->bitmask & EBT_STP_PORT) { v16 = NR16(stpc->port); if (FWINV(v16 < c->portl || v16 > c->portu, EBT_STP_PORT)) - return EBT_NOMATCH; + return false; } if (info->bitmask & EBT_STP_MSGAGE) { v16 = NR16(stpc->msg_age); if (FWINV(v16 < c->msg_agel || v16 > c->msg_ageu, EBT_STP_MSGAGE)) - return EBT_NOMATCH; + return false; } if (info->bitmask & EBT_STP_MAXAGE) { v16 = NR16(stpc->max_age); if (FWINV(v16 < c->max_agel || v16 > c->max_ageu, EBT_STP_MAXAGE)) - return EBT_NOMATCH; + return false; } if (info->bitmask & EBT_STP_HELLOTIME) { v16 = NR16(stpc->hello_time); if (FWINV(v16 < c->hello_timel || v16 > c->hello_timeu, EBT_STP_HELLOTIME)) - return EBT_NOMATCH; + return false; } if (info->bitmask & EBT_STP_FWDD) { v16 = NR16(stpc->forward_delay); if (FWINV(v16 < c->forward_delayl || v16 > c->forward_delayu, EBT_STP_FWDD)) - return EBT_NOMATCH; + return false; } - return EBT_MATCH; + return true; } -static int ebt_filter_stp(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const void *data, unsigned int datalen) +static bool +ebt_stp_mt(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct ebt_stp_info *info = data; + const struct ebt_stp_info *info = par->matchinfo; const struct stp_header *sp; struct stp_header _stph; const uint8_t header[6] = {0x42, 0x42, 0x03, 0x00, 0x00, 0x00}; sp = skb_header_pointer(skb, 0, sizeof(_stph), &_stph); if (sp == NULL) - return EBT_NOMATCH; + return false; /* The stp code only considers these */ if (memcmp(sp, header, sizeof(header))) - return EBT_NOMATCH; + return false; if (info->bitmask & EBT_STP_TYPE && FWINV(info->type != sp->type, EBT_STP_TYPE)) - return EBT_NOMATCH; + return false; if (sp->type == BPDU_TYPE_CONFIG && info->bitmask & EBT_STP_CONFIG_MASK) { @@ -147,48 +147,48 @@ static int ebt_filter_stp(const struct sk_buff *skb, const struct net_device *in st = skb_header_pointer(skb, sizeof(_stph), sizeof(_stpc), &_stpc); if (st == NULL) - return EBT_NOMATCH; + return false; return ebt_filter_config(info, st); } - return EBT_MATCH; + return true; } -static int ebt_stp_check(const char *tablename, unsigned int hookmask, - const struct ebt_entry *e, void *data, unsigned int datalen) +static bool ebt_stp_mt_check(const struct xt_mtchk_param *par) { - const struct ebt_stp_info *info = data; - const unsigned int len = EBT_ALIGN(sizeof(struct ebt_stp_info)); + const struct ebt_stp_info *info = par->matchinfo; const uint8_t bridge_ula[6] = {0x01, 0x80, 0xc2, 0x00, 0x00, 0x00}; const uint8_t msk[6] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; + const struct ebt_entry *e = par->entryinfo; if (info->bitmask & ~EBT_STP_MASK || info->invflags & ~EBT_STP_MASK || !(info->bitmask & EBT_STP_MASK)) - return -EINVAL; - if (datalen != len) - return -EINVAL; + return false; /* Make sure the match only receives stp frames */ if (compare_ether_addr(e->destmac, bridge_ula) || compare_ether_addr(e->destmsk, msk) || !(e->bitmask & EBT_DESTMAC)) - return -EINVAL; + return false; - return 0; + return true; } -static struct ebt_match filter_stp __read_mostly = { - .name = EBT_STP_MATCH, - .match = ebt_filter_stp, - .check = ebt_stp_check, +static struct xt_match ebt_stp_mt_reg __read_mostly = { + .name = "stp", + .revision = 0, + .family = NFPROTO_BRIDGE, + .match = ebt_stp_mt, + .checkentry = ebt_stp_mt_check, + .matchsize = XT_ALIGN(sizeof(struct ebt_stp_info)), .me = THIS_MODULE, }; static int __init ebt_stp_init(void) { - return ebt_register_match(&filter_stp); + return xt_register_match(&ebt_stp_mt_reg); } static void __exit ebt_stp_fini(void) { - ebt_unregister_match(&filter_stp); + xt_unregister_match(&ebt_stp_mt_reg); } module_init(ebt_stp_init); diff --git a/net/bridge/netfilter/ebt_ulog.c b/net/bridge/netfilter/ebt_ulog.c index 2d4c9ef909fc..2c6d6823e703 100644 --- a/net/bridge/netfilter/ebt_ulog.c +++ b/net/bridge/netfilter/ebt_ulog.c @@ -36,6 +36,7 @@ #include <linux/timer.h> #include <linux/netlink.h> #include <linux/netdevice.h> +#include <linux/netfilter/x_tables.h> #include <linux/netfilter_bridge/ebtables.h> #include <linux/netfilter_bridge/ebt_ulog.h> #include <net/netfilter/nf_log.h> @@ -223,7 +224,7 @@ alloc_failure: } /* this function is registered with the netfilter core */ -static void ebt_log_packet(unsigned int pf, unsigned int hooknum, +static void ebt_log_packet(u_int8_t pf, unsigned int hooknum, const struct sk_buff *skb, const struct net_device *in, const struct net_device *out, const struct nf_loginfo *li, const char *prefix) @@ -245,24 +246,20 @@ static void ebt_log_packet(unsigned int pf, unsigned int hooknum, ebt_ulog_packet(hooknum, skb, in, out, &loginfo, prefix); } -static void ebt_ulog(const struct sk_buff *skb, unsigned int hooknr, - const struct net_device *in, const struct net_device *out, - const void *data, unsigned int datalen) +static unsigned int +ebt_ulog_tg(struct sk_buff *skb, const struct xt_target_param *par) { - const struct ebt_ulog_info *uloginfo = data; - - ebt_ulog_packet(hooknr, skb, in, out, uloginfo, NULL); + ebt_ulog_packet(par->hooknum, skb, par->in, par->out, + par->targinfo, NULL); + return EBT_CONTINUE; } - -static int ebt_ulog_check(const char *tablename, unsigned int hookmask, - const struct ebt_entry *e, void *data, unsigned int datalen) +static bool ebt_ulog_tg_check(const struct xt_tgchk_param *par) { - struct ebt_ulog_info *uloginfo = data; + struct ebt_ulog_info *uloginfo = par->targinfo; - if (datalen != EBT_ALIGN(sizeof(struct ebt_ulog_info)) || - uloginfo->nlgroup > 31) - return -EINVAL; + if (uloginfo->nlgroup > 31) + return false; uloginfo->prefix[EBT_ULOG_PREFIX_LEN - 1] = '\0'; @@ -272,27 +269,31 @@ static int ebt_ulog_check(const char *tablename, unsigned int hookmask, return 0; } -static struct ebt_watcher ulog __read_mostly = { - .name = EBT_ULOG_WATCHER, - .watcher = ebt_ulog, - .check = ebt_ulog_check, +static struct xt_target ebt_ulog_tg_reg __read_mostly = { + .name = "ulog", + .revision = 0, + .family = NFPROTO_BRIDGE, + .target = ebt_ulog_tg, + .checkentry = ebt_ulog_tg_check, + .targetsize = XT_ALIGN(sizeof(struct ebt_ulog_info)), .me = THIS_MODULE, }; static const struct nf_logger ebt_ulog_logger = { - .name = EBT_ULOG_WATCHER, + .name = "ulog", .logfn = &ebt_log_packet, .me = THIS_MODULE, }; static int __init ebt_ulog_init(void) { - int i, ret = 0; + bool ret = true; + int i; if (nlbufsiz >= 128*1024) { printk(KERN_NOTICE "ebt_ulog: Netlink buffer has to be <= 128kB," " please try a smaller nlbufsiz parameter.\n"); - return -EINVAL; + return false; } /* initialize ulog_buffers */ @@ -304,13 +305,16 @@ static int __init ebt_ulog_init(void) ebtulognl = netlink_kernel_create(&init_net, NETLINK_NFLOG, EBT_ULOG_MAXNLGROUPS, NULL, NULL, THIS_MODULE); - if (!ebtulognl) - ret = -ENOMEM; - else if ((ret = ebt_register_watcher(&ulog))) + if (!ebtulognl) { + printk(KERN_WARNING KBUILD_MODNAME ": out of memory trying to " + "call netlink_kernel_create\n"); + ret = false; + } else if (xt_register_target(&ebt_ulog_tg_reg) != 0) { netlink_kernel_release(ebtulognl); + } - if (ret == 0) - nf_log_register(PF_BRIDGE, &ebt_ulog_logger); + if (ret) + nf_log_register(NFPROTO_BRIDGE, &ebt_ulog_logger); return ret; } @@ -321,7 +325,7 @@ static void __exit ebt_ulog_fini(void) int i; nf_log_unregister(&ebt_ulog_logger); - ebt_unregister_watcher(&ulog); + xt_unregister_target(&ebt_ulog_tg_reg); for (i = 0; i < EBT_ULOG_MAXNLGROUPS; i++) { ub = &ulog_buffers[i]; if (timer_pending(&ub->timer)) diff --git a/net/bridge/netfilter/ebt_vlan.c b/net/bridge/netfilter/ebt_vlan.c index ab60b0dade80..3dddd489328e 100644 --- a/net/bridge/netfilter/ebt_vlan.c +++ b/net/bridge/netfilter/ebt_vlan.c @@ -22,6 +22,7 @@ #include <linux/if_vlan.h> #include <linux/module.h> #include <linux/moduleparam.h> +#include <linux/netfilter/x_tables.h> #include <linux/netfilter_bridge/ebtables.h> #include <linux/netfilter_bridge/ebt_vlan.h> @@ -37,15 +38,12 @@ MODULE_LICENSE("GPL"); #define DEBUG_MSG(args...) if (debug) printk (KERN_DEBUG "ebt_vlan: " args) #define GET_BITMASK(_BIT_MASK_) info->bitmask & _BIT_MASK_ -#define EXIT_ON_MISMATCH(_MATCH_,_MASK_) {if (!((info->_MATCH_ == _MATCH_)^!!(info->invflags & _MASK_))) return EBT_NOMATCH;} +#define EXIT_ON_MISMATCH(_MATCH_,_MASK_) {if (!((info->_MATCH_ == _MATCH_)^!!(info->invflags & _MASK_))) return false; } -static int -ebt_filter_vlan(const struct sk_buff *skb, - const struct net_device *in, - const struct net_device *out, - const void *data, unsigned int datalen) +static bool +ebt_vlan_mt(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct ebt_vlan_info *info = data; + const struct ebt_vlan_info *info = par->matchinfo; const struct vlan_hdr *fp; struct vlan_hdr _frame; @@ -57,7 +55,7 @@ ebt_filter_vlan(const struct sk_buff *skb, fp = skb_header_pointer(skb, 0, sizeof(_frame), &_frame); if (fp == NULL) - return EBT_NOMATCH; + return false; /* Tag Control Information (TCI) consists of the following elements: * - User_priority. The user_priority field is three bits in length, @@ -83,30 +81,20 @@ ebt_filter_vlan(const struct sk_buff *skb, if (GET_BITMASK(EBT_VLAN_ENCAP)) EXIT_ON_MISMATCH(encap, EBT_VLAN_ENCAP); - return EBT_MATCH; + return true; } -static int -ebt_check_vlan(const char *tablename, - unsigned int hooknr, - const struct ebt_entry *e, void *data, unsigned int datalen) +static bool ebt_vlan_mt_check(const struct xt_mtchk_param *par) { - struct ebt_vlan_info *info = data; - - /* Parameters buffer overflow check */ - if (datalen != EBT_ALIGN(sizeof(struct ebt_vlan_info))) { - DEBUG_MSG - ("passed size %d is not eq to ebt_vlan_info (%Zd)\n", - datalen, sizeof(struct ebt_vlan_info)); - return -EINVAL; - } + struct ebt_vlan_info *info = par->matchinfo; + const struct ebt_entry *e = par->entryinfo; /* Is it 802.1Q frame checked? */ if (e->ethproto != htons(ETH_P_8021Q)) { DEBUG_MSG ("passed entry proto %2.4X is not 802.1Q (8100)\n", (unsigned short) ntohs(e->ethproto)); - return -EINVAL; + return false; } /* Check for bitmask range @@ -114,14 +102,14 @@ ebt_check_vlan(const char *tablename, if (info->bitmask & ~EBT_VLAN_MASK) { DEBUG_MSG("bitmask %2X is out of mask (%2X)\n", info->bitmask, EBT_VLAN_MASK); - return -EINVAL; + return false; } /* Check for inversion flags range */ if (info->invflags & ~EBT_VLAN_MASK) { DEBUG_MSG("inversion flags %2X is out of mask (%2X)\n", info->invflags, EBT_VLAN_MASK); - return -EINVAL; + return false; } /* Reserved VLAN ID (VID) values @@ -136,7 +124,7 @@ ebt_check_vlan(const char *tablename, DEBUG_MSG ("id %d is out of range (1-4096)\n", info->id); - return -EINVAL; + return false; } /* Note: This is valid VLAN-tagged frame point. * Any value of user_priority are acceptable, @@ -151,7 +139,7 @@ ebt_check_vlan(const char *tablename, if ((unsigned char) info->prio > 7) { DEBUG_MSG("prio %d is out of range (0-7)\n", info->prio); - return -EINVAL; + return false; } } /* Check for encapsulated proto range - it is possible to be @@ -162,17 +150,20 @@ ebt_check_vlan(const char *tablename, DEBUG_MSG ("encap frame length %d is less than minimal\n", ntohs(info->encap)); - return -EINVAL; + return false; } } - return 0; + return true; } -static struct ebt_match filter_vlan __read_mostly = { - .name = EBT_VLAN_MATCH, - .match = ebt_filter_vlan, - .check = ebt_check_vlan, +static struct xt_match ebt_vlan_mt_reg __read_mostly = { + .name = "vlan", + .revision = 0, + .family = NFPROTO_BRIDGE, + .match = ebt_vlan_mt, + .checkentry = ebt_vlan_mt_check, + .matchsize = XT_ALIGN(sizeof(struct ebt_vlan_info)), .me = THIS_MODULE, }; @@ -181,12 +172,12 @@ static int __init ebt_vlan_init(void) DEBUG_MSG("ebtables 802.1Q extension module v" MODULE_VERS "\n"); DEBUG_MSG("module debug=%d\n", !!debug); - return ebt_register_match(&filter_vlan); + return xt_register_match(&ebt_vlan_mt_reg); } static void __exit ebt_vlan_fini(void) { - ebt_unregister_match(&filter_vlan); + xt_unregister_match(&ebt_vlan_mt_reg); } module_init(ebt_vlan_init); diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c index 32afff859e4a..5bb88eb0aad4 100644 --- a/net/bridge/netfilter/ebtables.c +++ b/net/bridge/netfilter/ebtables.c @@ -19,6 +19,7 @@ #include <linux/kmod.h> #include <linux/module.h> #include <linux/vmalloc.h> +#include <linux/netfilter/x_tables.h> #include <linux/netfilter_bridge/ebtables.h> #include <linux/spinlock.h> #include <linux/mutex.h> @@ -55,29 +56,31 @@ static DEFINE_MUTEX(ebt_mutex); static LIST_HEAD(ebt_tables); -static LIST_HEAD(ebt_targets); -static LIST_HEAD(ebt_matches); -static LIST_HEAD(ebt_watchers); -static struct ebt_target ebt_standard_target = -{ {NULL, NULL}, EBT_STANDARD_TARGET, NULL, NULL, NULL, NULL}; +static struct xt_target ebt_standard_target = { + .name = "standard", + .revision = 0, + .family = NFPROTO_BRIDGE, + .targetsize = sizeof(int), +}; -static inline int ebt_do_watcher (struct ebt_entry_watcher *w, - const struct sk_buff *skb, unsigned int hooknr, const struct net_device *in, - const struct net_device *out) +static inline int +ebt_do_watcher(const struct ebt_entry_watcher *w, struct sk_buff *skb, + struct xt_target_param *par) { - w->u.watcher->watcher(skb, hooknr, in, out, w->data, - w->watcher_size); + par->target = w->u.watcher; + par->targinfo = w->data; + w->u.watcher->target(skb, par); /* watchers don't give a verdict */ return 0; } static inline int ebt_do_match (struct ebt_entry_match *m, - const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out) + const struct sk_buff *skb, struct xt_match_param *par) { - return m->u.match->match(skb, in, out, m->data, - m->match_size); + par->match = m->u.match; + par->matchinfo = m->data; + return m->u.match->match(skb, par); } static inline int ebt_dev_check(char *entry, const struct net_device *device) @@ -153,6 +156,15 @@ unsigned int ebt_do_table (unsigned int hook, struct sk_buff *skb, struct ebt_entries *chaininfo; char *base; struct ebt_table_info *private; + bool hotdrop = false; + struct xt_match_param mtpar; + struct xt_target_param tgpar; + + mtpar.family = tgpar.family = NFPROTO_BRIDGE; + mtpar.in = tgpar.in = in; + mtpar.out = tgpar.out = out; + mtpar.hotdrop = &hotdrop; + tgpar.hooknum = hook; read_lock_bh(&table->lock); private = table->private; @@ -173,8 +185,12 @@ unsigned int ebt_do_table (unsigned int hook, struct sk_buff *skb, if (ebt_basic_match(point, eth_hdr(skb), in, out)) goto letscontinue; - if (EBT_MATCH_ITERATE(point, ebt_do_match, skb, in, out) != 0) + if (EBT_MATCH_ITERATE(point, ebt_do_match, skb, &mtpar) != 0) goto letscontinue; + if (hotdrop) { + read_unlock_bh(&table->lock); + return NF_DROP; + } /* increase counter */ (*(counter_base + i)).pcnt++; @@ -182,17 +198,18 @@ unsigned int ebt_do_table (unsigned int hook, struct sk_buff *skb, /* these should only watch: not modify, nor tell us what to do with the packet */ - EBT_WATCHER_ITERATE(point, ebt_do_watcher, skb, hook, in, - out); + EBT_WATCHER_ITERATE(point, ebt_do_watcher, skb, &tgpar); t = (struct ebt_entry_target *) (((char *)point) + point->target_offset); /* standard target */ if (!t->u.target->target) verdict = ((struct ebt_standard_target *)t)->verdict; - else - verdict = t->u.target->target(skb, hook, - in, out, t->data, t->target_size); + else { + tgpar.target = t->u.target; + tgpar.targinfo = t->data; + verdict = t->u.target->target(skb, &tgpar); + } if (verdict == EBT_ACCEPT) { read_unlock_bh(&table->lock); return NF_ACCEPT; @@ -312,80 +329,71 @@ find_table_lock(const char *name, int *error, struct mutex *mutex) return find_inlist_lock(&ebt_tables, name, "ebtable_", error, mutex); } -static inline struct ebt_match * -find_match_lock(const char *name, int *error, struct mutex *mutex) -{ - return find_inlist_lock(&ebt_matches, name, "ebt_", error, mutex); -} - -static inline struct ebt_watcher * -find_watcher_lock(const char *name, int *error, struct mutex *mutex) -{ - return find_inlist_lock(&ebt_watchers, name, "ebt_", error, mutex); -} - -static inline struct ebt_target * -find_target_lock(const char *name, int *error, struct mutex *mutex) -{ - return find_inlist_lock(&ebt_targets, name, "ebt_", error, mutex); -} - static inline int -ebt_check_match(struct ebt_entry_match *m, struct ebt_entry *e, - const char *name, unsigned int hookmask, unsigned int *cnt) +ebt_check_match(struct ebt_entry_match *m, struct xt_mtchk_param *par, + unsigned int *cnt) { - struct ebt_match *match; + const struct ebt_entry *e = par->entryinfo; + struct xt_match *match; size_t left = ((char *)e + e->watchers_offset) - (char *)m; int ret; if (left < sizeof(struct ebt_entry_match) || left - sizeof(struct ebt_entry_match) < m->match_size) return -EINVAL; - match = find_match_lock(m->u.name, &ret, &ebt_mutex); - if (!match) - return ret; - m->u.match = match; - if (!try_module_get(match->me)) { - mutex_unlock(&ebt_mutex); + + match = try_then_request_module(xt_find_match(NFPROTO_BRIDGE, + m->u.name, 0), "ebt_%s", m->u.name); + if (IS_ERR(match)) + return PTR_ERR(match); + if (match == NULL) return -ENOENT; - } - mutex_unlock(&ebt_mutex); - if (match->check && - match->check(name, hookmask, e, m->data, m->match_size) != 0) { - BUGPRINT("match->check failed\n"); + m->u.match = match; + + par->match = match; + par->matchinfo = m->data; + ret = xt_check_match(par, m->match_size, + e->ethproto, e->invflags & EBT_IPROTO); + if (ret < 0) { module_put(match->me); - return -EINVAL; + return ret; } + (*cnt)++; return 0; } static inline int -ebt_check_watcher(struct ebt_entry_watcher *w, struct ebt_entry *e, - const char *name, unsigned int hookmask, unsigned int *cnt) +ebt_check_watcher(struct ebt_entry_watcher *w, struct xt_tgchk_param *par, + unsigned int *cnt) { - struct ebt_watcher *watcher; + const struct ebt_entry *e = par->entryinfo; + struct xt_target *watcher; size_t left = ((char *)e + e->target_offset) - (char *)w; int ret; if (left < sizeof(struct ebt_entry_watcher) || left - sizeof(struct ebt_entry_watcher) < w->watcher_size) return -EINVAL; - watcher = find_watcher_lock(w->u.name, &ret, &ebt_mutex); - if (!watcher) - return ret; - w->u.watcher = watcher; - if (!try_module_get(watcher->me)) { - mutex_unlock(&ebt_mutex); + + watcher = try_then_request_module( + xt_find_target(NFPROTO_BRIDGE, w->u.name, 0), + "ebt_%s", w->u.name); + if (IS_ERR(watcher)) + return PTR_ERR(watcher); + if (watcher == NULL) return -ENOENT; - } - mutex_unlock(&ebt_mutex); - if (watcher->check && - watcher->check(name, hookmask, e, w->data, w->watcher_size) != 0) { - BUGPRINT("watcher->check failed\n"); + w->u.watcher = watcher; + + par->target = watcher; + par->targinfo = w->data; + ret = xt_check_target(par, w->watcher_size, + e->ethproto, e->invflags & EBT_IPROTO); + if (ret < 0) { module_put(watcher->me); - return -EINVAL; + return ret; } + (*cnt)++; return 0; } @@ -558,30 +566,41 @@ ebt_get_udc_positions(struct ebt_entry *e, struct ebt_table_info *newinfo, static inline int ebt_cleanup_match(struct ebt_entry_match *m, unsigned int *i) { + struct xt_mtdtor_param par; + if (i && (*i)-- == 0) return 1; - if (m->u.match->destroy) - m->u.match->destroy(m->data, m->match_size); - module_put(m->u.match->me); + par.match = m->u.match; + par.matchinfo = m->data; + par.family = NFPROTO_BRIDGE; + if (par.match->destroy != NULL) + par.match->destroy(&par); + module_put(par.match->me); return 0; } static inline int ebt_cleanup_watcher(struct ebt_entry_watcher *w, unsigned int *i) { + struct xt_tgdtor_param par; + if (i && (*i)-- == 0) return 1; - if (w->u.watcher->destroy) - w->u.watcher->destroy(w->data, w->watcher_size); - module_put(w->u.watcher->me); + par.target = w->u.watcher; + par.targinfo = w->data; + par.family = NFPROTO_BRIDGE; + if (par.target->destroy != NULL) + par.target->destroy(&par); + module_put(par.target->me); return 0; } static inline int ebt_cleanup_entry(struct ebt_entry *e, unsigned int *cnt) { + struct xt_tgdtor_param par; struct ebt_entry_target *t; if (e->bitmask == 0) @@ -592,10 +611,13 @@ ebt_cleanup_entry(struct ebt_entry *e, unsigned int *cnt) EBT_WATCHER_ITERATE(e, ebt_cleanup_watcher, NULL); EBT_MATCH_ITERATE(e, ebt_cleanup_match, NULL); t = (struct ebt_entry_target *)(((char *)e) + e->target_offset); - if (t->u.target->destroy) - t->u.target->destroy(t->data, t->target_size); - module_put(t->u.target->me); + par.target = t->u.target; + par.targinfo = t->data; + par.family = NFPROTO_BRIDGE; + if (par.target->destroy != NULL) + par.target->destroy(&par); + module_put(par.target->me); return 0; } @@ -605,10 +627,12 @@ ebt_check_entry(struct ebt_entry *e, struct ebt_table_info *newinfo, struct ebt_cl_stack *cl_s, unsigned int udc_cnt) { struct ebt_entry_target *t; - struct ebt_target *target; + struct xt_target *target; unsigned int i, j, hook = 0, hookmask = 0; size_t gap; int ret; + struct xt_mtchk_param mtpar; + struct xt_tgchk_param tgpar; /* don't mess with the struct ebt_entries */ if (e->bitmask == 0) @@ -649,24 +673,31 @@ ebt_check_entry(struct ebt_entry *e, struct ebt_table_info *newinfo, hookmask = cl_s[i - 1].hookmask; } i = 0; - ret = EBT_MATCH_ITERATE(e, ebt_check_match, e, name, hookmask, &i); + + mtpar.table = tgpar.table = name; + mtpar.entryinfo = tgpar.entryinfo = e; + mtpar.hook_mask = tgpar.hook_mask = hookmask; + mtpar.family = tgpar.family = NFPROTO_BRIDGE; + ret = EBT_MATCH_ITERATE(e, ebt_check_match, &mtpar, &i); if (ret != 0) goto cleanup_matches; j = 0; - ret = EBT_WATCHER_ITERATE(e, ebt_check_watcher, e, name, hookmask, &j); + ret = EBT_WATCHER_ITERATE(e, ebt_check_watcher, &tgpar, &j); if (ret != 0) goto cleanup_watchers; t = (struct ebt_entry_target *)(((char *)e) + e->target_offset); gap = e->next_offset - e->target_offset; - target = find_target_lock(t->u.name, &ret, &ebt_mutex); - if (!target) + + target = try_then_request_module( + xt_find_target(NFPROTO_BRIDGE, t->u.name, 0), + "ebt_%s", t->u.name); + if (IS_ERR(target)) { + ret = PTR_ERR(target); goto cleanup_watchers; - if (!try_module_get(target->me)) { - mutex_unlock(&ebt_mutex); + } else if (target == NULL) { ret = -ENOENT; goto cleanup_watchers; } - mutex_unlock(&ebt_mutex); t->u.target = target; if (t->u.target == &ebt_standard_target) { @@ -681,13 +712,20 @@ ebt_check_entry(struct ebt_entry *e, struct ebt_table_info *newinfo, ret = -EFAULT; goto cleanup_watchers; } - } else if (t->target_size > gap - sizeof(struct ebt_entry_target) || - (t->u.target->check && - t->u.target->check(name, hookmask, e, t->data, t->target_size) != 0)){ + } else if (t->target_size > gap - sizeof(struct ebt_entry_target)) { module_put(t->u.target->me); ret = -EFAULT; goto cleanup_watchers; } + + tgpar.target = target; + tgpar.targinfo = t->data; + ret = xt_check_target(&tgpar, t->target_size, + e->ethproto, e->invflags & EBT_IPROTO); + if (ret < 0) { + module_put(target->me); + goto cleanup_watchers; + } (*cnt)++; return 0; cleanup_watchers: @@ -1068,87 +1106,6 @@ free_newinfo: return ret; } -int ebt_register_target(struct ebt_target *target) -{ - struct ebt_target *t; - int ret; - - ret = mutex_lock_interruptible(&ebt_mutex); - if (ret != 0) - return ret; - list_for_each_entry(t, &ebt_targets, list) { - if (strcmp(t->name, target->name) == 0) { - mutex_unlock(&ebt_mutex); - return -EEXIST; - } - } - list_add(&target->list, &ebt_targets); - mutex_unlock(&ebt_mutex); - - return 0; -} - -void ebt_unregister_target(struct ebt_target *target) -{ - mutex_lock(&ebt_mutex); - list_del(&target->list); - mutex_unlock(&ebt_mutex); -} - -int ebt_register_match(struct ebt_match *match) -{ - struct ebt_match *m; - int ret; - - ret = mutex_lock_interruptible(&ebt_mutex); - if (ret != 0) - return ret; - list_for_each_entry(m, &ebt_matches, list) { - if (strcmp(m->name, match->name) == 0) { - mutex_unlock(&ebt_mutex); - return -EEXIST; - } - } - list_add(&match->list, &ebt_matches); - mutex_unlock(&ebt_mutex); - - return 0; -} - -void ebt_unregister_match(struct ebt_match *match) -{ - mutex_lock(&ebt_mutex); - list_del(&match->list); - mutex_unlock(&ebt_mutex); -} - -int ebt_register_watcher(struct ebt_watcher *watcher) -{ - struct ebt_watcher *w; - int ret; - - ret = mutex_lock_interruptible(&ebt_mutex); - if (ret != 0) - return ret; - list_for_each_entry(w, &ebt_watchers, list) { - if (strcmp(w->name, watcher->name) == 0) { - mutex_unlock(&ebt_mutex); - return -EEXIST; - } - } - list_add(&watcher->list, &ebt_watchers); - mutex_unlock(&ebt_mutex); - - return 0; -} - -void ebt_unregister_watcher(struct ebt_watcher *watcher) -{ - mutex_lock(&ebt_mutex); - list_del(&watcher->list); - mutex_unlock(&ebt_mutex); -} - int ebt_register_table(struct ebt_table *table) { struct ebt_table_info *newinfo; @@ -1518,11 +1475,14 @@ static int __init ebtables_init(void) { int ret; - mutex_lock(&ebt_mutex); - list_add(&ebt_standard_target.list, &ebt_targets); - mutex_unlock(&ebt_mutex); - if ((ret = nf_register_sockopt(&ebt_sockopts)) < 0) + ret = xt_register_target(&ebt_standard_target); + if (ret < 0) + return ret; + ret = nf_register_sockopt(&ebt_sockopts); + if (ret < 0) { + xt_unregister_target(&ebt_standard_target); return ret; + } printk(KERN_INFO "Ebtables v2.0 registered\n"); return 0; @@ -1531,17 +1491,12 @@ static int __init ebtables_init(void) static void __exit ebtables_fini(void) { nf_unregister_sockopt(&ebt_sockopts); + xt_unregister_target(&ebt_standard_target); printk(KERN_INFO "Ebtables v2.0 unregistered\n"); } EXPORT_SYMBOL(ebt_register_table); EXPORT_SYMBOL(ebt_unregister_table); -EXPORT_SYMBOL(ebt_register_match); -EXPORT_SYMBOL(ebt_unregister_match); -EXPORT_SYMBOL(ebt_register_watcher); -EXPORT_SYMBOL(ebt_unregister_watcher); -EXPORT_SYMBOL(ebt_register_target); -EXPORT_SYMBOL(ebt_unregister_target); EXPORT_SYMBOL(ebt_do_table); module_init(ebtables_init); module_exit(ebtables_fini); diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c index 7c52fe277b62..b0dc818a91d7 100644 --- a/net/core/net_namespace.c +++ b/net/core/net_namespace.c @@ -18,6 +18,7 @@ static struct list_head *first_device = &pernet_list; static DEFINE_MUTEX(net_mutex); LIST_HEAD(net_namespace_list); +EXPORT_SYMBOL_GPL(net_namespace_list); struct net init_net; EXPORT_SYMBOL(init_net); diff --git a/net/ipv4/netfilter.c b/net/ipv4/netfilter.c index 01671ad51ed3..6efdb70b3eb2 100644 --- a/net/ipv4/netfilter.c +++ b/net/ipv4/netfilter.c @@ -12,6 +12,7 @@ /* route_me_harder function, used by iptable_nat, iptable_mangle + ip_queue */ int ip_route_me_harder(struct sk_buff *skb, unsigned addr_type) { + struct net *net = dev_net(skb->dst->dev); const struct iphdr *iph = ip_hdr(skb); struct rtable *rt; struct flowi fl = {}; @@ -19,7 +20,7 @@ int ip_route_me_harder(struct sk_buff *skb, unsigned addr_type) unsigned int hh_len; unsigned int type; - type = inet_addr_type(&init_net, iph->saddr); + type = inet_addr_type(net, iph->saddr); if (skb->sk && inet_sk(skb->sk)->transparent) type = RTN_LOCAL; if (addr_type == RTN_UNSPEC) @@ -36,7 +37,7 @@ int ip_route_me_harder(struct sk_buff *skb, unsigned addr_type) fl.oif = skb->sk ? skb->sk->sk_bound_dev_if : 0; fl.mark = skb->mark; fl.flags = skb->sk ? inet_sk_flowi_flags(skb->sk) : 0; - if (ip_route_output_key(&init_net, &rt, &fl) != 0) + if (ip_route_output_key(net, &rt, &fl) != 0) return -1; /* Drop old route. */ @@ -46,7 +47,7 @@ int ip_route_me_harder(struct sk_buff *skb, unsigned addr_type) /* non-local src, find valid iif to satisfy * rp-filter when calling ip_route_input. */ fl.nl_u.ip4_u.daddr = iph->saddr; - if (ip_route_output_key(&init_net, &rt, &fl) != 0) + if (ip_route_output_key(net, &rt, &fl) != 0) return -1; odst = skb->dst; diff --git a/net/ipv4/netfilter/Kconfig b/net/ipv4/netfilter/Kconfig index 90eb7cb47e77..3816e1dc9295 100644 --- a/net/ipv4/netfilter/Kconfig +++ b/net/ipv4/netfilter/Kconfig @@ -5,10 +5,15 @@ menu "IP: Netfilter Configuration" depends on INET && NETFILTER +config NF_DEFRAG_IPV4 + tristate + default n + config NF_CONNTRACK_IPV4 tristate "IPv4 connection tracking support (required for NAT)" depends on NF_CONNTRACK default m if NETFILTER_ADVANCED=n + select NF_DEFRAG_IPV4 ---help--- Connection tracking keeps a record of what packets have passed through your machine, in order to figure out how they are related @@ -56,23 +61,30 @@ config IP_NF_IPTABLES To compile it as a module, choose M here. If unsure, say N. +if IP_NF_IPTABLES + # The matches. -config IP_NF_MATCH_RECENT - tristate '"recent" match support' - depends on IP_NF_IPTABLES +config IP_NF_MATCH_ADDRTYPE + tristate '"addrtype" address type match support' depends on NETFILTER_ADVANCED help - This match is used for creating one or many lists of recently - used addresses and then matching against that/those list(s). + This option allows you to match what routing thinks of an address, + eg. UNICAST, LOCAL, BROADCAST, ... - Short options are available by using 'iptables -m recent -h' - Official Website: <http://snowman.net/projects/ipt_recent/> + If you want to compile it as a module, say M here and read + <file:Documentation/kbuild/modules.txt>. If unsure, say `N'. + +config IP_NF_MATCH_AH + tristate '"ah" match support' + depends on NETFILTER_ADVANCED + help + This match extension allows you to match a range of SPIs + inside AH header of IPSec packets. To compile it as a module, choose M here. If unsure, say N. config IP_NF_MATCH_ECN tristate '"ecn" match support' - depends on IP_NF_IPTABLES depends on NETFILTER_ADVANCED help This option adds a `ECN' match, which allows you to match against @@ -80,19 +92,8 @@ config IP_NF_MATCH_ECN To compile it as a module, choose M here. If unsure, say N. -config IP_NF_MATCH_AH - tristate '"ah" match support' - depends on IP_NF_IPTABLES - depends on NETFILTER_ADVANCED - help - This match extension allows you to match a range of SPIs - inside AH header of IPSec packets. - - To compile it as a module, choose M here. If unsure, say N. - config IP_NF_MATCH_TTL tristate '"ttl" match support' - depends on IP_NF_IPTABLES depends on NETFILTER_ADVANCED help This adds CONFIG_IP_NF_MATCH_TTL option, which enabled the user @@ -100,21 +101,9 @@ config IP_NF_MATCH_TTL To compile it as a module, choose M here. If unsure, say N. -config IP_NF_MATCH_ADDRTYPE - tristate '"addrtype" address type match support' - depends on IP_NF_IPTABLES - depends on NETFILTER_ADVANCED - help - This option allows you to match what routing thinks of an address, - eg. UNICAST, LOCAL, BROADCAST, ... - - If you want to compile it as a module, say M here and read - <file:Documentation/kbuild/modules.txt>. If unsure, say `N'. - # `filter', generic and specific targets config IP_NF_FILTER tristate "Packet filtering" - depends on IP_NF_IPTABLES default m if NETFILTER_ADVANCED=n help Packet filtering defines a table `filter', which has a series of @@ -136,7 +125,6 @@ config IP_NF_TARGET_REJECT config IP_NF_TARGET_LOG tristate "LOG target support" - depends on IP_NF_IPTABLES default m if NETFILTER_ADVANCED=n help This option adds a `LOG' target, which allows you to create rules in @@ -146,7 +134,6 @@ config IP_NF_TARGET_LOG config IP_NF_TARGET_ULOG tristate "ULOG target support" - depends on IP_NF_IPTABLES default m if NETFILTER_ADVANCED=n ---help--- @@ -167,7 +154,7 @@ config IP_NF_TARGET_ULOG # NAT + specific targets: nf_conntrack config NF_NAT tristate "Full NAT" - depends on IP_NF_IPTABLES && NF_CONNTRACK_IPV4 + depends on NF_CONNTRACK_IPV4 default m if NETFILTER_ADVANCED=n help The Full NAT option allows masquerading, port forwarding and other @@ -194,26 +181,26 @@ config IP_NF_TARGET_MASQUERADE To compile it as a module, choose M here. If unsure, say N. -config IP_NF_TARGET_REDIRECT - tristate "REDIRECT target support" +config IP_NF_TARGET_NETMAP + tristate "NETMAP target support" depends on NF_NAT depends on NETFILTER_ADVANCED help - REDIRECT is a special case of NAT: all incoming connections are - mapped onto the incoming interface's address, causing the packets to - come to the local machine instead of passing through. This is - useful for transparent proxies. + NETMAP is an implementation of static 1:1 NAT mapping of network + addresses. It maps the network address part, while keeping the host + address part intact. To compile it as a module, choose M here. If unsure, say N. -config IP_NF_TARGET_NETMAP - tristate "NETMAP target support" +config IP_NF_TARGET_REDIRECT + tristate "REDIRECT target support" depends on NF_NAT depends on NETFILTER_ADVANCED help - NETMAP is an implementation of static 1:1 NAT mapping of network - addresses. It maps the network address part, while keeping the host - address part intact. + REDIRECT is a special case of NAT: all incoming connections are + mapped onto the incoming interface's address, causing the packets to + come to the local machine instead of passing through. This is + useful for transparent proxies. To compile it as a module, choose M here. If unsure, say N. @@ -262,44 +249,43 @@ config NF_NAT_PROTO_SCTP config NF_NAT_FTP tristate - depends on IP_NF_IPTABLES && NF_CONNTRACK && NF_NAT + depends on NF_CONNTRACK && NF_NAT default NF_NAT && NF_CONNTRACK_FTP config NF_NAT_IRC tristate - depends on IP_NF_IPTABLES && NF_CONNTRACK && NF_NAT + depends on NF_CONNTRACK && NF_NAT default NF_NAT && NF_CONNTRACK_IRC config NF_NAT_TFTP tristate - depends on IP_NF_IPTABLES && NF_CONNTRACK && NF_NAT + depends on NF_CONNTRACK && NF_NAT default NF_NAT && NF_CONNTRACK_TFTP config NF_NAT_AMANDA tristate - depends on IP_NF_IPTABLES && NF_CONNTRACK && NF_NAT + depends on NF_CONNTRACK && NF_NAT default NF_NAT && NF_CONNTRACK_AMANDA config NF_NAT_PPTP tristate - depends on IP_NF_IPTABLES && NF_CONNTRACK && NF_NAT + depends on NF_CONNTRACK && NF_NAT default NF_NAT && NF_CONNTRACK_PPTP select NF_NAT_PROTO_GRE config NF_NAT_H323 tristate - depends on IP_NF_IPTABLES && NF_CONNTRACK && NF_NAT + depends on NF_CONNTRACK && NF_NAT default NF_NAT && NF_CONNTRACK_H323 config NF_NAT_SIP tristate - depends on IP_NF_IPTABLES && NF_CONNTRACK && NF_NAT + depends on NF_CONNTRACK && NF_NAT default NF_NAT && NF_CONNTRACK_SIP # mangle + specific targets config IP_NF_MANGLE tristate "Packet mangling" - depends on IP_NF_IPTABLES default m if NETFILTER_ADVANCED=n help This option adds a `mangle' table to iptables: see the man page for @@ -308,6 +294,19 @@ config IP_NF_MANGLE To compile it as a module, choose M here. If unsure, say N. +config IP_NF_TARGET_CLUSTERIP + tristate "CLUSTERIP target support (EXPERIMENTAL)" + depends on IP_NF_MANGLE && EXPERIMENTAL + depends on NF_CONNTRACK_IPV4 + depends on NETFILTER_ADVANCED + select NF_CONNTRACK_MARK + help + The CLUSTERIP target allows you to build load-balancing clusters of + network servers without having a dedicated load-balancing + router/server/switch. + + To compile it as a module, choose M here. If unsure, say N. + config IP_NF_TARGET_ECN tristate "ECN target support" depends on IP_NF_MANGLE @@ -338,23 +337,9 @@ config IP_NF_TARGET_TTL To compile it as a module, choose M here. If unsure, say N. -config IP_NF_TARGET_CLUSTERIP - tristate "CLUSTERIP target support (EXPERIMENTAL)" - depends on IP_NF_MANGLE && EXPERIMENTAL - depends on NF_CONNTRACK_IPV4 - depends on NETFILTER_ADVANCED - select NF_CONNTRACK_MARK - help - The CLUSTERIP target allows you to build load-balancing clusters of - network servers without having a dedicated load-balancing - router/server/switch. - - To compile it as a module, choose M here. If unsure, say N. - # raw + specific targets config IP_NF_RAW tristate 'raw table support (required for NOTRACK/TRACE)' - depends on IP_NF_IPTABLES depends on NETFILTER_ADVANCED help This option adds a `raw' table to iptables. This table is the very @@ -367,7 +352,6 @@ config IP_NF_RAW # security table for MAC policy config IP_NF_SECURITY tristate "Security table" - depends on IP_NF_IPTABLES depends on SECURITY depends on NETFILTER_ADVANCED help @@ -376,6 +360,8 @@ config IP_NF_SECURITY If unsure, say N. +endif # IP_NF_IPTABLES + # ARP tables config IP_NF_ARPTABLES tristate "ARP tables support" @@ -388,9 +374,10 @@ config IP_NF_ARPTABLES To compile it as a module, choose M here. If unsure, say N. +if IP_NF_ARPTABLES + config IP_NF_ARPFILTER tristate "ARP packet filtering" - depends on IP_NF_ARPTABLES help ARP packet filtering defines a table `filter', which has a series of rules for simple ARP packet filtering at local input and @@ -401,10 +388,11 @@ config IP_NF_ARPFILTER config IP_NF_ARP_MANGLE tristate "ARP payload mangling" - depends on IP_NF_ARPTABLES help Allows altering the ARP packet payload: source and destination hardware and network addresses. +endif # IP_NF_ARPTABLES + endmenu diff --git a/net/ipv4/netfilter/Makefile b/net/ipv4/netfilter/Makefile index 3f31291f37ce..5f9b650d90fc 100644 --- a/net/ipv4/netfilter/Makefile +++ b/net/ipv4/netfilter/Makefile @@ -18,6 +18,9 @@ obj-$(CONFIG_NF_CONNTRACK_IPV4) += nf_conntrack_ipv4.o obj-$(CONFIG_NF_NAT) += nf_nat.o +# defrag +obj-$(CONFIG_NF_DEFRAG_IPV4) += nf_defrag_ipv4.o + # NAT helpers (nf_conntrack) obj-$(CONFIG_NF_NAT_AMANDA) += nf_nat_amanda.o obj-$(CONFIG_NF_NAT_FTP) += nf_nat_ftp.o @@ -48,7 +51,6 @@ obj-$(CONFIG_IP_NF_SECURITY) += iptable_security.o obj-$(CONFIG_IP_NF_MATCH_ADDRTYPE) += ipt_addrtype.o obj-$(CONFIG_IP_NF_MATCH_AH) += ipt_ah.o obj-$(CONFIG_IP_NF_MATCH_ECN) += ipt_ecn.o -obj-$(CONFIG_IP_NF_MATCH_RECENT) += ipt_recent.o obj-$(CONFIG_IP_NF_MATCH_TTL) += ipt_ttl.o # targets diff --git a/net/ipv4/netfilter/arp_tables.c b/net/ipv4/netfilter/arp_tables.c index 03e83a65aec5..8d70d29f1ccf 100644 --- a/net/ipv4/netfilter/arp_tables.c +++ b/net/ipv4/netfilter/arp_tables.c @@ -200,15 +200,12 @@ static inline int arp_checkentry(const struct arpt_arp *arp) return 1; } -static unsigned int arpt_error(struct sk_buff *skb, - const struct net_device *in, - const struct net_device *out, - unsigned int hooknum, - const struct xt_target *target, - const void *targinfo) +static unsigned int +arpt_error(struct sk_buff *skb, const struct xt_target_param *par) { if (net_ratelimit()) - printk("arp_tables: error: '%s'\n", (char *)targinfo); + printk("arp_tables: error: '%s'\n", + (const char *)par->targinfo); return NF_DROP; } @@ -232,6 +229,7 @@ unsigned int arpt_do_table(struct sk_buff *skb, const char *indev, *outdev; void *table_base; const struct xt_table_info *private; + struct xt_target_param tgpar; if (!pskb_may_pull(skb, arp_hdr_len(skb->dev))) return NF_DROP; @@ -245,6 +243,11 @@ unsigned int arpt_do_table(struct sk_buff *skb, e = get_entry(table_base, private->hook_entry[hook]); back = get_entry(table_base, private->underflow[hook]); + tgpar.in = in; + tgpar.out = out; + tgpar.hooknum = hook; + tgpar.family = NFPROTO_ARP; + arp = arp_hdr(skb); do { if (arp_packet_match(arp, skb->dev, indev, outdev, &e->arp)) { @@ -290,11 +293,10 @@ unsigned int arpt_do_table(struct sk_buff *skb, /* Targets which reenter must return * abs. verdicts */ + tgpar.target = t->u.kernel.target; + tgpar.targinfo = t->data; verdict = t->u.kernel.target->target(skb, - in, out, - hook, - t->u.kernel.target, - t->data); + &tgpar); /* Target might have changed stuff. */ arp = arp_hdr(skb); @@ -456,23 +458,24 @@ static inline int check_entry(struct arpt_entry *e, const char *name) static inline int check_target(struct arpt_entry *e, const char *name) { - struct arpt_entry_target *t; - struct xt_target *target; + struct arpt_entry_target *t = arpt_get_target(e); int ret; - - t = arpt_get_target(e); - target = t->u.kernel.target; - - ret = xt_check_target(target, NF_ARP, t->u.target_size - sizeof(*t), - name, e->comefrom, 0, 0); - if (!ret && t->u.kernel.target->checkentry - && !t->u.kernel.target->checkentry(name, e, target, t->data, - e->comefrom)) { + struct xt_tgchk_param par = { + .table = name, + .entryinfo = e, + .target = t->u.kernel.target, + .targinfo = t->data, + .hook_mask = e->comefrom, + .family = NFPROTO_ARP, + }; + + ret = xt_check_target(&par, t->u.target_size - sizeof(*t), 0, false); + if (ret < 0) { duprintf("arp_tables: check failed for `%s'.\n", t->u.kernel.target->name); - ret = -EINVAL; + return ret; } - return ret; + return 0; } static inline int @@ -488,7 +491,8 @@ find_check_entry(struct arpt_entry *e, const char *name, unsigned int size, return ret; t = arpt_get_target(e); - target = try_then_request_module(xt_find_target(NF_ARP, t->u.user.name, + target = try_then_request_module(xt_find_target(NFPROTO_ARP, + t->u.user.name, t->u.user.revision), "arpt_%s", t->u.user.name); if (IS_ERR(target) || !target) { @@ -554,15 +558,19 @@ static inline int check_entry_size_and_hooks(struct arpt_entry *e, static inline int cleanup_entry(struct arpt_entry *e, unsigned int *i) { + struct xt_tgdtor_param par; struct arpt_entry_target *t; if (i && (*i)-- == 0) return 1; t = arpt_get_target(e); - if (t->u.kernel.target->destroy) - t->u.kernel.target->destroy(t->u.kernel.target, t->data); - module_put(t->u.kernel.target->me); + par.target = t->u.kernel.target; + par.targinfo = t->data; + par.family = NFPROTO_ARP; + if (par.target->destroy != NULL) + par.target->destroy(&par); + module_put(par.target->me); return 0; } @@ -788,7 +796,7 @@ static void compat_standard_from_user(void *dst, void *src) int v = *(compat_int_t *)src; if (v > 0) - v += xt_compat_calc_jump(NF_ARP, v); + v += xt_compat_calc_jump(NFPROTO_ARP, v); memcpy(dst, &v, sizeof(v)); } @@ -797,7 +805,7 @@ static int compat_standard_to_user(void __user *dst, void *src) compat_int_t cv = *(int *)src; if (cv > 0) - cv -= xt_compat_calc_jump(NF_ARP, cv); + cv -= xt_compat_calc_jump(NFPROTO_ARP, cv); return copy_to_user(dst, &cv, sizeof(cv)) ? -EFAULT : 0; } @@ -815,7 +823,7 @@ static int compat_calc_entry(struct arpt_entry *e, t = arpt_get_target(e); off += xt_compat_target_offset(t->u.kernel.target); newinfo->size -= off; - ret = xt_compat_add_offset(NF_ARP, entry_offset, off); + ret = xt_compat_add_offset(NFPROTO_ARP, entry_offset, off); if (ret) return ret; @@ -866,9 +874,9 @@ static int get_info(struct net *net, void __user *user, int *len, int compat) name[ARPT_TABLE_MAXNAMELEN-1] = '\0'; #ifdef CONFIG_COMPAT if (compat) - xt_compat_lock(NF_ARP); + xt_compat_lock(NFPROTO_ARP); #endif - t = try_then_request_module(xt_find_table_lock(net, NF_ARP, name), + t = try_then_request_module(xt_find_table_lock(net, NFPROTO_ARP, name), "arptable_%s", name); if (t && !IS_ERR(t)) { struct arpt_getinfo info; @@ -878,7 +886,7 @@ static int get_info(struct net *net, void __user *user, int *len, int compat) if (compat) { struct xt_table_info tmp; ret = compat_table_info(private, &tmp); - xt_compat_flush_offsets(NF_ARP); + xt_compat_flush_offsets(NFPROTO_ARP); private = &tmp; } #endif @@ -901,7 +909,7 @@ static int get_info(struct net *net, void __user *user, int *len, int compat) ret = t ? PTR_ERR(t) : -ENOENT; #ifdef CONFIG_COMPAT if (compat) - xt_compat_unlock(NF_ARP); + xt_compat_unlock(NFPROTO_ARP); #endif return ret; } @@ -925,7 +933,7 @@ static int get_entries(struct net *net, struct arpt_get_entries __user *uptr, return -EINVAL; } - t = xt_find_table_lock(net, NF_ARP, get.name); + t = xt_find_table_lock(net, NFPROTO_ARP, get.name); if (t && !IS_ERR(t)) { const struct xt_table_info *private = t->private; @@ -967,7 +975,7 @@ static int __do_replace(struct net *net, const char *name, goto out; } - t = try_then_request_module(xt_find_table_lock(net, NF_ARP, name), + t = try_then_request_module(xt_find_table_lock(net, NFPROTO_ARP, name), "arptable_%s", name); if (!t || IS_ERR(t)) { ret = t ? PTR_ERR(t) : -ENOENT; @@ -1134,7 +1142,7 @@ static int do_add_counters(struct net *net, void __user *user, unsigned int len, goto free; } - t = xt_find_table_lock(net, NF_ARP, name); + t = xt_find_table_lock(net, NFPROTO_ARP, name); if (!t || IS_ERR(t)) { ret = t ? PTR_ERR(t) : -ENOENT; goto free; @@ -1218,7 +1226,7 @@ check_compat_entry_size_and_hooks(struct compat_arpt_entry *e, entry_offset = (void *)e - (void *)base; t = compat_arpt_get_target(e); - target = try_then_request_module(xt_find_target(NF_ARP, + target = try_then_request_module(xt_find_target(NFPROTO_ARP, t->u.user.name, t->u.user.revision), "arpt_%s", t->u.user.name); @@ -1232,7 +1240,7 @@ check_compat_entry_size_and_hooks(struct compat_arpt_entry *e, off += xt_compat_target_offset(target); *size += off; - ret = xt_compat_add_offset(NF_ARP, entry_offset, off); + ret = xt_compat_add_offset(NFPROTO_ARP, entry_offset, off); if (ret) goto release_target; @@ -1333,7 +1341,7 @@ static int translate_compat_table(const char *name, duprintf("translate_compat_table: size %u\n", info->size); j = 0; - xt_compat_lock(NF_ARP); + xt_compat_lock(NFPROTO_ARP); /* Walk through entries, checking offsets. */ ret = COMPAT_ARPT_ENTRY_ITERATE(entry0, total_size, check_compat_entry_size_and_hooks, @@ -1383,8 +1391,8 @@ static int translate_compat_table(const char *name, ret = COMPAT_ARPT_ENTRY_ITERATE(entry0, total_size, compat_copy_entry_from_user, &pos, &size, name, newinfo, entry1); - xt_compat_flush_offsets(NF_ARP); - xt_compat_unlock(NF_ARP); + xt_compat_flush_offsets(NFPROTO_ARP); + xt_compat_unlock(NFPROTO_ARP); if (ret) goto free_newinfo; @@ -1420,8 +1428,8 @@ out: COMPAT_ARPT_ENTRY_ITERATE(entry0, total_size, compat_release_entry, &j); return ret; out_unlock: - xt_compat_flush_offsets(NF_ARP); - xt_compat_unlock(NF_ARP); + xt_compat_flush_offsets(NFPROTO_ARP); + xt_compat_unlock(NFPROTO_ARP); goto out; } @@ -1607,8 +1615,8 @@ static int compat_get_entries(struct net *net, return -EINVAL; } - xt_compat_lock(NF_ARP); - t = xt_find_table_lock(net, NF_ARP, get.name); + xt_compat_lock(NFPROTO_ARP); + t = xt_find_table_lock(net, NFPROTO_ARP, get.name); if (t && !IS_ERR(t)) { const struct xt_table_info *private = t->private; struct xt_table_info info; @@ -1623,13 +1631,13 @@ static int compat_get_entries(struct net *net, private->size, get.size); ret = -EAGAIN; } - xt_compat_flush_offsets(NF_ARP); + xt_compat_flush_offsets(NFPROTO_ARP); module_put(t->me); xt_table_unlock(t); } else ret = t ? PTR_ERR(t) : -ENOENT; - xt_compat_unlock(NF_ARP); + xt_compat_unlock(NFPROTO_ARP); return ret; } @@ -1709,7 +1717,7 @@ static int do_arpt_get_ctl(struct sock *sk, int cmd, void __user *user, int *len break; } - try_then_request_module(xt_find_revision(NF_ARP, rev.name, + try_then_request_module(xt_find_revision(NFPROTO_ARP, rev.name, rev.revision, 1, &ret), "arpt_%s", rev.name); break; @@ -1787,7 +1795,7 @@ void arpt_unregister_table(struct xt_table *table) static struct xt_target arpt_standard_target __read_mostly = { .name = ARPT_STANDARD_TARGET, .targetsize = sizeof(int), - .family = NF_ARP, + .family = NFPROTO_ARP, #ifdef CONFIG_COMPAT .compatsize = sizeof(compat_int_t), .compat_from_user = compat_standard_from_user, @@ -1799,7 +1807,7 @@ static struct xt_target arpt_error_target __read_mostly = { .name = ARPT_ERROR_TARGET, .target = arpt_error, .targetsize = ARPT_FUNCTION_MAXNAMELEN, - .family = NF_ARP, + .family = NFPROTO_ARP, }; static struct nf_sockopt_ops arpt_sockopts = { @@ -1821,12 +1829,12 @@ static struct nf_sockopt_ops arpt_sockopts = { static int __net_init arp_tables_net_init(struct net *net) { - return xt_proto_init(net, NF_ARP); + return xt_proto_init(net, NFPROTO_ARP); } static void __net_exit arp_tables_net_exit(struct net *net) { - xt_proto_fini(net, NF_ARP); + xt_proto_fini(net, NFPROTO_ARP); } static struct pernet_operations arp_tables_net_ops = { diff --git a/net/ipv4/netfilter/arpt_mangle.c b/net/ipv4/netfilter/arpt_mangle.c index a385959d2655..b0d5b1d0a769 100644 --- a/net/ipv4/netfilter/arpt_mangle.c +++ b/net/ipv4/netfilter/arpt_mangle.c @@ -9,12 +9,9 @@ MODULE_AUTHOR("Bart De Schuymer <bdschuym@pandora.be>"); MODULE_DESCRIPTION("arptables arp payload mangle target"); static unsigned int -target(struct sk_buff *skb, - const struct net_device *in, const struct net_device *out, - unsigned int hooknum, const struct xt_target *target, - const void *targinfo) +target(struct sk_buff *skb, const struct xt_target_param *par) { - const struct arpt_mangle *mangle = targinfo; + const struct arpt_mangle *mangle = par->targinfo; const struct arphdr *arp; unsigned char *arpptr; int pln, hln; @@ -57,11 +54,9 @@ target(struct sk_buff *skb, return mangle->target; } -static bool -checkentry(const char *tablename, const void *e, const struct xt_target *target, - void *targinfo, unsigned int hook_mask) +static bool checkentry(const struct xt_tgchk_param *par) { - const struct arpt_mangle *mangle = targinfo; + const struct arpt_mangle *mangle = par->targinfo; if (mangle->flags & ~ARPT_MANGLE_MASK || !(mangle->flags & ARPT_MANGLE_MASK)) @@ -75,7 +70,7 @@ checkentry(const char *tablename, const void *e, const struct xt_target *target, static struct xt_target arpt_mangle_reg __read_mostly = { .name = "mangle", - .family = NF_ARP, + .family = NFPROTO_ARP, .target = target, .targetsize = sizeof(struct arpt_mangle), .checkentry = checkentry, diff --git a/net/ipv4/netfilter/arptable_filter.c b/net/ipv4/netfilter/arptable_filter.c index 082f5dd3156c..bee3d117661a 100644 --- a/net/ipv4/netfilter/arptable_filter.c +++ b/net/ipv4/netfilter/arptable_filter.c @@ -51,7 +51,7 @@ static struct xt_table packet_filter = { .lock = __RW_LOCK_UNLOCKED(packet_filter.lock), .private = NULL, .me = THIS_MODULE, - .af = NF_ARP, + .af = NFPROTO_ARP, }; /* The work comes in here from netfilter.c */ @@ -89,21 +89,21 @@ static struct nf_hook_ops arpt_ops[] __read_mostly = { { .hook = arpt_in_hook, .owner = THIS_MODULE, - .pf = NF_ARP, + .pf = NFPROTO_ARP, .hooknum = NF_ARP_IN, .priority = NF_IP_PRI_FILTER, }, { .hook = arpt_out_hook, .owner = THIS_MODULE, - .pf = NF_ARP, + .pf = NFPROTO_ARP, .hooknum = NF_ARP_OUT, .priority = NF_IP_PRI_FILTER, }, { .hook = arpt_forward_hook, .owner = THIS_MODULE, - .pf = NF_ARP, + .pf = NFPROTO_ARP, .hooknum = NF_ARP_FORWARD, .priority = NF_IP_PRI_FILTER, }, diff --git a/net/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c index 4e7c719445c2..213fb27debc1 100644 --- a/net/ipv4/netfilter/ip_tables.c +++ b/net/ipv4/netfilter/ip_tables.c @@ -171,31 +171,25 @@ ip_checkentry(const struct ipt_ip *ip) } static unsigned int -ipt_error(struct sk_buff *skb, - const struct net_device *in, - const struct net_device *out, - unsigned int hooknum, - const struct xt_target *target, - const void *targinfo) +ipt_error(struct sk_buff *skb, const struct xt_target_param *par) { if (net_ratelimit()) - printk("ip_tables: error: `%s'\n", (char *)targinfo); + printk("ip_tables: error: `%s'\n", + (const char *)par->targinfo); return NF_DROP; } /* Performance critical - called for every packet */ static inline bool -do_match(struct ipt_entry_match *m, - const struct sk_buff *skb, - const struct net_device *in, - const struct net_device *out, - int offset, - bool *hotdrop) +do_match(struct ipt_entry_match *m, const struct sk_buff *skb, + struct xt_match_param *par) { + par->match = m->u.kernel.match; + par->matchinfo = m->data; + /* Stop iteration if it doesn't match */ - if (!m->u.kernel.match->match(skb, in, out, m->u.kernel.match, m->data, - offset, ip_hdrlen(skb), hotdrop)) + if (!m->u.kernel.match->match(skb, par)) return true; else return false; @@ -326,7 +320,6 @@ ipt_do_table(struct sk_buff *skb, struct xt_table *table) { static const char nulldevname[IFNAMSIZ] __attribute__((aligned(sizeof(long)))); - u_int16_t offset; const struct iphdr *ip; u_int16_t datalen; bool hotdrop = false; @@ -336,6 +329,8 @@ ipt_do_table(struct sk_buff *skb, void *table_base; struct ipt_entry *e, *back; struct xt_table_info *private; + struct xt_match_param mtpar; + struct xt_target_param tgpar; /* Initialization */ ip = ip_hdr(skb); @@ -348,7 +343,13 @@ ipt_do_table(struct sk_buff *skb, * things we don't know, ie. tcp syn flag or ports). If the * rule is also a fragment-specific rule, non-fragments won't * match it. */ - offset = ntohs(ip->frag_off) & IP_OFFSET; + mtpar.fragoff = ntohs(ip->frag_off) & IP_OFFSET; + mtpar.thoff = ip_hdrlen(skb); + mtpar.hotdrop = &hotdrop; + mtpar.in = tgpar.in = in; + mtpar.out = tgpar.out = out; + mtpar.family = tgpar.family = NFPROTO_IPV4; + tgpar.hooknum = hook; read_lock_bh(&table->lock); IP_NF_ASSERT(table->valid_hooks & (1 << hook)); @@ -362,12 +363,11 @@ ipt_do_table(struct sk_buff *skb, do { IP_NF_ASSERT(e); IP_NF_ASSERT(back); - if (ip_packet_match(ip, indev, outdev, &e->ip, offset)) { + if (ip_packet_match(ip, indev, outdev, + &e->ip, mtpar.fragoff)) { struct ipt_entry_target *t; - if (IPT_MATCH_ITERATE(e, do_match, - skb, in, out, - offset, &hotdrop) != 0) + if (IPT_MATCH_ITERATE(e, do_match, skb, &mtpar) != 0) goto no_match; ADD_COUNTER(e->counters, ntohs(ip->tot_len), 1); @@ -413,16 +413,14 @@ ipt_do_table(struct sk_buff *skb, } else { /* Targets which reenter must return abs. verdicts */ + tgpar.target = t->u.kernel.target; + tgpar.targinfo = t->data; #ifdef CONFIG_NETFILTER_DEBUG ((struct ipt_entry *)table_base)->comefrom = 0xeeeeeeec; #endif verdict = t->u.kernel.target->target(skb, - in, out, - hook, - t->u.kernel.target, - t->data); - + &tgpar); #ifdef CONFIG_NETFILTER_DEBUG if (((struct ipt_entry *)table_base)->comefrom != 0xeeeeeeec @@ -575,12 +573,17 @@ mark_source_chains(struct xt_table_info *newinfo, static int cleanup_match(struct ipt_entry_match *m, unsigned int *i) { + struct xt_mtdtor_param par; + if (i && (*i)-- == 0) return 1; - if (m->u.kernel.match->destroy) - m->u.kernel.match->destroy(m->u.kernel.match, m->data); - module_put(m->u.kernel.match->me); + par.match = m->u.kernel.match; + par.matchinfo = m->data; + par.family = NFPROTO_IPV4; + if (par.match->destroy != NULL) + par.match->destroy(&par); + module_put(par.match->me); return 0; } @@ -606,34 +609,28 @@ check_entry(struct ipt_entry *e, const char *name) } static int -check_match(struct ipt_entry_match *m, const char *name, - const struct ipt_ip *ip, - unsigned int hookmask, unsigned int *i) +check_match(struct ipt_entry_match *m, struct xt_mtchk_param *par, + unsigned int *i) { - struct xt_match *match; + const struct ipt_ip *ip = par->entryinfo; int ret; - match = m->u.kernel.match; - ret = xt_check_match(match, AF_INET, m->u.match_size - sizeof(*m), - name, hookmask, ip->proto, - ip->invflags & IPT_INV_PROTO); - if (!ret && m->u.kernel.match->checkentry - && !m->u.kernel.match->checkentry(name, ip, match, m->data, - hookmask)) { + par->match = m->u.kernel.match; + par->matchinfo = m->data; + + ret = xt_check_match(par, m->u.match_size - sizeof(*m), + ip->proto, ip->invflags & IPT_INV_PROTO); + if (ret < 0) { duprintf("ip_tables: check failed for `%s'.\n", - m->u.kernel.match->name); - ret = -EINVAL; + par.match->name); + return ret; } - if (!ret) - (*i)++; - return ret; + ++*i; + return 0; } static int -find_check_match(struct ipt_entry_match *m, - const char *name, - const struct ipt_ip *ip, - unsigned int hookmask, +find_check_match(struct ipt_entry_match *m, struct xt_mtchk_param *par, unsigned int *i) { struct xt_match *match; @@ -648,7 +645,7 @@ find_check_match(struct ipt_entry_match *m, } m->u.kernel.match = match; - ret = check_match(m, name, ip, hookmask, i); + ret = check_match(m, par, i); if (ret) goto err; @@ -660,23 +657,25 @@ err: static int check_target(struct ipt_entry *e, const char *name) { - struct ipt_entry_target *t; - struct xt_target *target; + struct ipt_entry_target *t = ipt_get_target(e); + struct xt_tgchk_param par = { + .table = name, + .entryinfo = e, + .target = t->u.kernel.target, + .targinfo = t->data, + .hook_mask = e->comefrom, + .family = NFPROTO_IPV4, + }; int ret; - t = ipt_get_target(e); - target = t->u.kernel.target; - ret = xt_check_target(target, AF_INET, t->u.target_size - sizeof(*t), - name, e->comefrom, e->ip.proto, - e->ip.invflags & IPT_INV_PROTO); - if (!ret && t->u.kernel.target->checkentry - && !t->u.kernel.target->checkentry(name, e, target, t->data, - e->comefrom)) { + ret = xt_check_target(&par, t->u.target_size - sizeof(*t), + e->ip.proto, e->ip.invflags & IPT_INV_PROTO); + if (ret < 0) { duprintf("ip_tables: check failed for `%s'.\n", t->u.kernel.target->name); - ret = -EINVAL; + return ret; } - return ret; + return 0; } static int @@ -687,14 +686,18 @@ find_check_entry(struct ipt_entry *e, const char *name, unsigned int size, struct xt_target *target; int ret; unsigned int j; + struct xt_mtchk_param mtpar; ret = check_entry(e, name); if (ret) return ret; j = 0; - ret = IPT_MATCH_ITERATE(e, find_check_match, name, &e->ip, - e->comefrom, &j); + mtpar.table = name; + mtpar.entryinfo = &e->ip; + mtpar.hook_mask = e->comefrom; + mtpar.family = NFPROTO_IPV4; + ret = IPT_MATCH_ITERATE(e, find_check_match, &mtpar, &j); if (ret != 0) goto cleanup_matches; @@ -769,6 +772,7 @@ check_entry_size_and_hooks(struct ipt_entry *e, static int cleanup_entry(struct ipt_entry *e, unsigned int *i) { + struct xt_tgdtor_param par; struct ipt_entry_target *t; if (i && (*i)-- == 0) @@ -777,9 +781,13 @@ cleanup_entry(struct ipt_entry *e, unsigned int *i) /* Cleanup all matches */ IPT_MATCH_ITERATE(e, cleanup_match, NULL); t = ipt_get_target(e); - if (t->u.kernel.target->destroy) - t->u.kernel.target->destroy(t->u.kernel.target, t->data); - module_put(t->u.kernel.target->me); + + par.target = t->u.kernel.target; + par.targinfo = t->data; + par.family = NFPROTO_IPV4; + if (par.target->destroy != NULL) + par.target->destroy(&par); + module_put(par.target->me); return 0; } @@ -1648,12 +1656,16 @@ static int compat_check_entry(struct ipt_entry *e, const char *name, unsigned int *i) { + struct xt_mtchk_param mtpar; unsigned int j; int ret; j = 0; - ret = IPT_MATCH_ITERATE(e, check_match, name, &e->ip, - e->comefrom, &j); + mtpar.table = name; + mtpar.entryinfo = &e->ip; + mtpar.hook_mask = e->comefrom; + mtpar.family = NFPROTO_IPV4; + ret = IPT_MATCH_ITERATE(e, check_match, &mtpar, &j); if (ret) goto cleanup_matches; @@ -2121,30 +2133,23 @@ icmp_type_code_match(u_int8_t test_type, u_int8_t min_code, u_int8_t max_code, } static bool -icmp_match(const struct sk_buff *skb, - const struct net_device *in, - const struct net_device *out, - const struct xt_match *match, - const void *matchinfo, - int offset, - unsigned int protoff, - bool *hotdrop) +icmp_match(const struct sk_buff *skb, const struct xt_match_param *par) { const struct icmphdr *ic; struct icmphdr _icmph; - const struct ipt_icmp *icmpinfo = matchinfo; + const struct ipt_icmp *icmpinfo = par->matchinfo; /* Must not be a fragment. */ - if (offset) + if (par->fragoff != 0) return false; - ic = skb_header_pointer(skb, protoff, sizeof(_icmph), &_icmph); + ic = skb_header_pointer(skb, par->thoff, sizeof(_icmph), &_icmph); if (ic == NULL) { /* We've been asked to examine this packet, and we * can't. Hence, no choice but to drop. */ duprintf("Dropping evil ICMP tinygram.\n"); - *hotdrop = true; + *par->hotdrop = true; return false; } @@ -2155,15 +2160,9 @@ icmp_match(const struct sk_buff *skb, !!(icmpinfo->invflags&IPT_ICMP_INV)); } -/* Called when user tries to insert an entry of this type. */ -static bool -icmp_checkentry(const char *tablename, - const void *entry, - const struct xt_match *match, - void *matchinfo, - unsigned int hook_mask) +static bool icmp_checkentry(const struct xt_mtchk_param *par) { - const struct ipt_icmp *icmpinfo = matchinfo; + const struct ipt_icmp *icmpinfo = par->matchinfo; /* Must specify no unknown invflags */ return !(icmpinfo->invflags & ~IPT_ICMP_INV); diff --git a/net/ipv4/netfilter/ipt_CLUSTERIP.c b/net/ipv4/netfilter/ipt_CLUSTERIP.c index fafe8ebb4c55..7ac1677419a9 100644 --- a/net/ipv4/netfilter/ipt_CLUSTERIP.c +++ b/net/ipv4/netfilter/ipt_CLUSTERIP.c @@ -281,11 +281,9 @@ clusterip_responsible(const struct clusterip_config *config, u_int32_t hash) ***********************************************************************/ static unsigned int -clusterip_tg(struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, unsigned int hooknum, - const struct xt_target *target, const void *targinfo) +clusterip_tg(struct sk_buff *skb, const struct xt_target_param *par) { - const struct ipt_clusterip_tgt_info *cipinfo = targinfo; + const struct ipt_clusterip_tgt_info *cipinfo = par->targinfo; struct nf_conn *ct; enum ip_conntrack_info ctinfo; u_int32_t hash; @@ -349,13 +347,10 @@ clusterip_tg(struct sk_buff *skb, const struct net_device *in, return XT_CONTINUE; } -static bool -clusterip_tg_check(const char *tablename, const void *e_void, - const struct xt_target *target, void *targinfo, - unsigned int hook_mask) +static bool clusterip_tg_check(const struct xt_tgchk_param *par) { - struct ipt_clusterip_tgt_info *cipinfo = targinfo; - const struct ipt_entry *e = e_void; + struct ipt_clusterip_tgt_info *cipinfo = par->targinfo; + const struct ipt_entry *e = par->entryinfo; struct clusterip_config *config; @@ -406,9 +401,9 @@ clusterip_tg_check(const char *tablename, const void *e_void, } cipinfo->config = config; - if (nf_ct_l3proto_try_module_get(target->family) < 0) { + if (nf_ct_l3proto_try_module_get(par->target->family) < 0) { printk(KERN_WARNING "can't load conntrack support for " - "proto=%u\n", target->family); + "proto=%u\n", par->target->family); return false; } @@ -416,9 +411,9 @@ clusterip_tg_check(const char *tablename, const void *e_void, } /* drop reference count of cluster config when rule is deleted */ -static void clusterip_tg_destroy(const struct xt_target *target, void *targinfo) +static void clusterip_tg_destroy(const struct xt_tgdtor_param *par) { - const struct ipt_clusterip_tgt_info *cipinfo = targinfo; + const struct ipt_clusterip_tgt_info *cipinfo = par->targinfo; /* if no more entries are referencing the config, remove it * from the list and destroy the proc entry */ @@ -426,7 +421,7 @@ static void clusterip_tg_destroy(const struct xt_target *target, void *targinfo) clusterip_config_put(cipinfo->config); - nf_ct_l3proto_module_put(target->family); + nf_ct_l3proto_module_put(par->target->family); } #ifdef CONFIG_COMPAT @@ -445,7 +440,7 @@ struct compat_ipt_clusterip_tgt_info static struct xt_target clusterip_tg_reg __read_mostly = { .name = "CLUSTERIP", - .family = AF_INET, + .family = NFPROTO_IPV4, .target = clusterip_tg, .checkentry = clusterip_tg_check, .destroy = clusterip_tg_destroy, @@ -546,7 +541,7 @@ arp_mangle(unsigned int hook, static struct nf_hook_ops cip_arp_ops __read_mostly = { .hook = arp_mangle, - .pf = NF_ARP, + .pf = NFPROTO_ARP, .hooknum = NF_ARP_OUT, .priority = -1 }; diff --git a/net/ipv4/netfilter/ipt_ECN.c b/net/ipv4/netfilter/ipt_ECN.c index d60139c134ca..f7e2fa0974dc 100644 --- a/net/ipv4/netfilter/ipt_ECN.c +++ b/net/ipv4/netfilter/ipt_ECN.c @@ -77,11 +77,9 @@ set_ect_tcp(struct sk_buff *skb, const struct ipt_ECN_info *einfo) } static unsigned int -ecn_tg(struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, unsigned int hooknum, - const struct xt_target *target, const void *targinfo) +ecn_tg(struct sk_buff *skb, const struct xt_target_param *par) { - const struct ipt_ECN_info *einfo = targinfo; + const struct ipt_ECN_info *einfo = par->targinfo; if (einfo->operation & IPT_ECN_OP_SET_IP) if (!set_ect_ip(skb, einfo)) @@ -95,13 +93,10 @@ ecn_tg(struct sk_buff *skb, const struct net_device *in, return XT_CONTINUE; } -static bool -ecn_tg_check(const char *tablename, const void *e_void, - const struct xt_target *target, void *targinfo, - unsigned int hook_mask) +static bool ecn_tg_check(const struct xt_tgchk_param *par) { - const struct ipt_ECN_info *einfo = targinfo; - const struct ipt_entry *e = e_void; + const struct ipt_ECN_info *einfo = par->targinfo; + const struct ipt_entry *e = par->entryinfo; if (einfo->operation & IPT_ECN_OP_MASK) { printk(KERN_WARNING "ECN: unsupported ECN operation %x\n", @@ -124,7 +119,7 @@ ecn_tg_check(const char *tablename, const void *e_void, static struct xt_target ecn_tg_reg __read_mostly = { .name = "ECN", - .family = AF_INET, + .family = NFPROTO_IPV4, .target = ecn_tg, .targetsize = sizeof(struct ipt_ECN_info), .table = "mangle", diff --git a/net/ipv4/netfilter/ipt_LOG.c b/net/ipv4/netfilter/ipt_LOG.c index 0af14137137b..fc6ce04a3e35 100644 --- a/net/ipv4/netfilter/ipt_LOG.c +++ b/net/ipv4/netfilter/ipt_LOG.c @@ -375,7 +375,7 @@ static struct nf_loginfo default_loginfo = { }; static void -ipt_log_packet(unsigned int pf, +ipt_log_packet(u_int8_t pf, unsigned int hooknum, const struct sk_buff *skb, const struct net_device *in, @@ -426,28 +426,23 @@ ipt_log_packet(unsigned int pf, } static unsigned int -log_tg(struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, unsigned int hooknum, - const struct xt_target *target, const void *targinfo) +log_tg(struct sk_buff *skb, const struct xt_target_param *par) { - const struct ipt_log_info *loginfo = targinfo; + const struct ipt_log_info *loginfo = par->targinfo; struct nf_loginfo li; li.type = NF_LOG_TYPE_LOG; li.u.log.level = loginfo->level; li.u.log.logflags = loginfo->logflags; - ipt_log_packet(PF_INET, hooknum, skb, in, out, &li, + ipt_log_packet(NFPROTO_IPV4, par->hooknum, skb, par->in, par->out, &li, loginfo->prefix); return XT_CONTINUE; } -static bool -log_tg_check(const char *tablename, const void *e, - const struct xt_target *target, void *targinfo, - unsigned int hook_mask) +static bool log_tg_check(const struct xt_tgchk_param *par) { - const struct ipt_log_info *loginfo = targinfo; + const struct ipt_log_info *loginfo = par->targinfo; if (loginfo->level >= 8) { pr_debug("LOG: level %u >= 8\n", loginfo->level); @@ -463,7 +458,7 @@ log_tg_check(const char *tablename, const void *e, static struct xt_target log_tg_reg __read_mostly = { .name = "LOG", - .family = AF_INET, + .family = NFPROTO_IPV4, .target = log_tg, .targetsize = sizeof(struct ipt_log_info), .checkentry = log_tg_check, @@ -483,7 +478,7 @@ static int __init log_tg_init(void) ret = xt_register_target(&log_tg_reg); if (ret < 0) return ret; - nf_log_register(PF_INET, &ipt_log_logger); + nf_log_register(NFPROTO_IPV4, &ipt_log_logger); return 0; } diff --git a/net/ipv4/netfilter/ipt_MASQUERADE.c b/net/ipv4/netfilter/ipt_MASQUERADE.c index 0841aefaa503..f389f60cb105 100644 --- a/net/ipv4/netfilter/ipt_MASQUERADE.c +++ b/net/ipv4/netfilter/ipt_MASQUERADE.c @@ -31,12 +31,9 @@ MODULE_DESCRIPTION("Xtables: automatic-address SNAT"); static DEFINE_RWLOCK(masq_lock); /* FIXME: Multiple targets. --RR */ -static bool -masquerade_tg_check(const char *tablename, const void *e, - const struct xt_target *target, void *targinfo, - unsigned int hook_mask) +static bool masquerade_tg_check(const struct xt_tgchk_param *par) { - const struct nf_nat_multi_range_compat *mr = targinfo; + const struct nf_nat_multi_range_compat *mr = par->targinfo; if (mr->range[0].flags & IP_NAT_RANGE_MAP_IPS) { pr_debug("masquerade_check: bad MAP_IPS.\n"); @@ -50,9 +47,7 @@ masquerade_tg_check(const char *tablename, const void *e, } static unsigned int -masquerade_tg(struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, unsigned int hooknum, - const struct xt_target *target, const void *targinfo) +masquerade_tg(struct sk_buff *skb, const struct xt_target_param *par) { struct nf_conn *ct; struct nf_conn_nat *nat; @@ -62,7 +57,7 @@ masquerade_tg(struct sk_buff *skb, const struct net_device *in, const struct rtable *rt; __be32 newsrc; - NF_CT_ASSERT(hooknum == NF_INET_POST_ROUTING); + NF_CT_ASSERT(par->hooknum == NF_INET_POST_ROUTING); ct = nf_ct_get(skb, &ctinfo); nat = nfct_nat(ct); @@ -76,16 +71,16 @@ masquerade_tg(struct sk_buff *skb, const struct net_device *in, if (ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.u3.ip == 0) return NF_ACCEPT; - mr = targinfo; + mr = par->targinfo; rt = skb->rtable; - newsrc = inet_select_addr(out, rt->rt_gateway, RT_SCOPE_UNIVERSE); + newsrc = inet_select_addr(par->out, rt->rt_gateway, RT_SCOPE_UNIVERSE); if (!newsrc) { - printk("MASQUERADE: %s ate my IP address\n", out->name); + printk("MASQUERADE: %s ate my IP address\n", par->out->name); return NF_DROP; } write_lock_bh(&masq_lock); - nat->masq_index = out->ifindex; + nat->masq_index = par->out->ifindex; write_unlock_bh(&masq_lock); /* Transfer from original range. */ @@ -119,9 +114,7 @@ static int masq_device_event(struct notifier_block *this, void *ptr) { const struct net_device *dev = ptr; - - if (!net_eq(dev_net(dev), &init_net)) - return NOTIFY_DONE; + struct net *net = dev_net(dev); if (event == NETDEV_DOWN) { /* Device was downed. Search entire table for @@ -129,7 +122,8 @@ static int masq_device_event(struct notifier_block *this, and forget them. */ NF_CT_ASSERT(dev->ifindex != 0); - nf_ct_iterate_cleanup(device_cmp, (void *)(long)dev->ifindex); + nf_ct_iterate_cleanup(net, device_cmp, + (void *)(long)dev->ifindex); } return NOTIFY_DONE; @@ -153,7 +147,7 @@ static struct notifier_block masq_inet_notifier = { static struct xt_target masquerade_tg_reg __read_mostly = { .name = "MASQUERADE", - .family = AF_INET, + .family = NFPROTO_IPV4, .target = masquerade_tg, .targetsize = sizeof(struct nf_nat_multi_range_compat), .table = "nat", diff --git a/net/ipv4/netfilter/ipt_NETMAP.c b/net/ipv4/netfilter/ipt_NETMAP.c index 6739abfd1521..7c29582d4ec8 100644 --- a/net/ipv4/netfilter/ipt_NETMAP.c +++ b/net/ipv4/netfilter/ipt_NETMAP.c @@ -22,12 +22,9 @@ MODULE_LICENSE("GPL"); MODULE_AUTHOR("Svenning Soerensen <svenning@post5.tele.dk>"); MODULE_DESCRIPTION("Xtables: 1:1 NAT mapping of IPv4 subnets"); -static bool -netmap_tg_check(const char *tablename, const void *e, - const struct xt_target *target, void *targinfo, - unsigned int hook_mask) +static bool netmap_tg_check(const struct xt_tgchk_param *par) { - const struct nf_nat_multi_range_compat *mr = targinfo; + const struct nf_nat_multi_range_compat *mr = par->targinfo; if (!(mr->range[0].flags & IP_NAT_RANGE_MAP_IPS)) { pr_debug("NETMAP:check: bad MAP_IPS.\n"); @@ -41,24 +38,23 @@ netmap_tg_check(const char *tablename, const void *e, } static unsigned int -netmap_tg(struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, unsigned int hooknum, - const struct xt_target *target, const void *targinfo) +netmap_tg(struct sk_buff *skb, const struct xt_target_param *par) { struct nf_conn *ct; enum ip_conntrack_info ctinfo; __be32 new_ip, netmask; - const struct nf_nat_multi_range_compat *mr = targinfo; + const struct nf_nat_multi_range_compat *mr = par->targinfo; struct nf_nat_range newrange; - NF_CT_ASSERT(hooknum == NF_INET_PRE_ROUTING - || hooknum == NF_INET_POST_ROUTING - || hooknum == NF_INET_LOCAL_OUT); + NF_CT_ASSERT(par->hooknum == NF_INET_PRE_ROUTING || + par->hooknum == NF_INET_POST_ROUTING || + par->hooknum == NF_INET_LOCAL_OUT); ct = nf_ct_get(skb, &ctinfo); netmask = ~(mr->range[0].min_ip ^ mr->range[0].max_ip); - if (hooknum == NF_INET_PRE_ROUTING || hooknum == NF_INET_LOCAL_OUT) + if (par->hooknum == NF_INET_PRE_ROUTING || + par->hooknum == NF_INET_LOCAL_OUT) new_ip = ip_hdr(skb)->daddr & ~netmask; else new_ip = ip_hdr(skb)->saddr & ~netmask; @@ -70,12 +66,12 @@ netmap_tg(struct sk_buff *skb, const struct net_device *in, mr->range[0].min, mr->range[0].max }); /* Hand modified range to generic setup. */ - return nf_nat_setup_info(ct, &newrange, HOOK2MANIP(hooknum)); + return nf_nat_setup_info(ct, &newrange, HOOK2MANIP(par->hooknum)); } static struct xt_target netmap_tg_reg __read_mostly = { .name = "NETMAP", - .family = AF_INET, + .family = NFPROTO_IPV4, .target = netmap_tg, .targetsize = sizeof(struct nf_nat_multi_range_compat), .table = "nat", diff --git a/net/ipv4/netfilter/ipt_REDIRECT.c b/net/ipv4/netfilter/ipt_REDIRECT.c index 5c6292449d13..698e5e78685b 100644 --- a/net/ipv4/netfilter/ipt_REDIRECT.c +++ b/net/ipv4/netfilter/ipt_REDIRECT.c @@ -26,12 +26,9 @@ MODULE_AUTHOR("Netfilter Core Team <coreteam@netfilter.org>"); MODULE_DESCRIPTION("Xtables: Connection redirection to localhost"); /* FIXME: Take multiple ranges --RR */ -static bool -redirect_tg_check(const char *tablename, const void *e, - const struct xt_target *target, void *targinfo, - unsigned int hook_mask) +static bool redirect_tg_check(const struct xt_tgchk_param *par) { - const struct nf_nat_multi_range_compat *mr = targinfo; + const struct nf_nat_multi_range_compat *mr = par->targinfo; if (mr->range[0].flags & IP_NAT_RANGE_MAP_IPS) { pr_debug("redirect_check: bad MAP_IPS.\n"); @@ -45,24 +42,22 @@ redirect_tg_check(const char *tablename, const void *e, } static unsigned int -redirect_tg(struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, unsigned int hooknum, - const struct xt_target *target, const void *targinfo) +redirect_tg(struct sk_buff *skb, const struct xt_target_param *par) { struct nf_conn *ct; enum ip_conntrack_info ctinfo; __be32 newdst; - const struct nf_nat_multi_range_compat *mr = targinfo; + const struct nf_nat_multi_range_compat *mr = par->targinfo; struct nf_nat_range newrange; - NF_CT_ASSERT(hooknum == NF_INET_PRE_ROUTING - || hooknum == NF_INET_LOCAL_OUT); + NF_CT_ASSERT(par->hooknum == NF_INET_PRE_ROUTING || + par->hooknum == NF_INET_LOCAL_OUT); ct = nf_ct_get(skb, &ctinfo); NF_CT_ASSERT(ct && (ctinfo == IP_CT_NEW || ctinfo == IP_CT_RELATED)); /* Local packets: make them go to loopback */ - if (hooknum == NF_INET_LOCAL_OUT) + if (par->hooknum == NF_INET_LOCAL_OUT) newdst = htonl(0x7F000001); else { struct in_device *indev; @@ -92,7 +87,7 @@ redirect_tg(struct sk_buff *skb, const struct net_device *in, static struct xt_target redirect_tg_reg __read_mostly = { .name = "REDIRECT", - .family = AF_INET, + .family = NFPROTO_IPV4, .target = redirect_tg, .targetsize = sizeof(struct nf_nat_multi_range_compat), .table = "nat", diff --git a/net/ipv4/netfilter/ipt_REJECT.c b/net/ipv4/netfilter/ipt_REJECT.c index 2639872849da..0b4b6e0ff2b9 100644 --- a/net/ipv4/netfilter/ipt_REJECT.c +++ b/net/ipv4/netfilter/ipt_REJECT.c @@ -136,11 +136,9 @@ static inline void send_unreach(struct sk_buff *skb_in, int code) } static unsigned int -reject_tg(struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, unsigned int hooknum, - const struct xt_target *target, const void *targinfo) +reject_tg(struct sk_buff *skb, const struct xt_target_param *par) { - const struct ipt_reject_info *reject = targinfo; + const struct ipt_reject_info *reject = par->targinfo; /* WARNING: This code causes reentry within iptables. This means that the iptables jump stack is now crap. We @@ -168,7 +166,7 @@ reject_tg(struct sk_buff *skb, const struct net_device *in, send_unreach(skb, ICMP_PKT_FILTERED); break; case IPT_TCP_RESET: - send_reset(skb, hooknum); + send_reset(skb, par->hooknum); case IPT_ICMP_ECHOREPLY: /* Doesn't happen. */ break; @@ -177,13 +175,10 @@ reject_tg(struct sk_buff *skb, const struct net_device *in, return NF_DROP; } -static bool -reject_tg_check(const char *tablename, const void *e_void, - const struct xt_target *target, void *targinfo, - unsigned int hook_mask) +static bool reject_tg_check(const struct xt_tgchk_param *par) { - const struct ipt_reject_info *rejinfo = targinfo; - const struct ipt_entry *e = e_void; + const struct ipt_reject_info *rejinfo = par->targinfo; + const struct ipt_entry *e = par->entryinfo; if (rejinfo->with == IPT_ICMP_ECHOREPLY) { printk("ipt_REJECT: ECHOREPLY no longer supported.\n"); @@ -201,7 +196,7 @@ reject_tg_check(const char *tablename, const void *e_void, static struct xt_target reject_tg_reg __read_mostly = { .name = "REJECT", - .family = AF_INET, + .family = NFPROTO_IPV4, .target = reject_tg, .targetsize = sizeof(struct ipt_reject_info), .table = "filter", diff --git a/net/ipv4/netfilter/ipt_TTL.c b/net/ipv4/netfilter/ipt_TTL.c index 30eed65e7338..6d76aae90cc0 100644 --- a/net/ipv4/netfilter/ipt_TTL.c +++ b/net/ipv4/netfilter/ipt_TTL.c @@ -20,12 +20,10 @@ MODULE_DESCRIPTION("Xtables: IPv4 TTL field modification target"); MODULE_LICENSE("GPL"); static unsigned int -ttl_tg(struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, unsigned int hooknum, - const struct xt_target *target, const void *targinfo) +ttl_tg(struct sk_buff *skb, const struct xt_target_param *par) { struct iphdr *iph; - const struct ipt_TTL_info *info = targinfo; + const struct ipt_TTL_info *info = par->targinfo; int new_ttl; if (!skb_make_writable(skb, skb->len)) @@ -61,12 +59,9 @@ ttl_tg(struct sk_buff *skb, const struct net_device *in, return XT_CONTINUE; } -static bool -ttl_tg_check(const char *tablename, const void *e, - const struct xt_target *target, void *targinfo, - unsigned int hook_mask) +static bool ttl_tg_check(const struct xt_tgchk_param *par) { - const struct ipt_TTL_info *info = targinfo; + const struct ipt_TTL_info *info = par->targinfo; if (info->mode > IPT_TTL_MAXMODE) { printk(KERN_WARNING "ipt_TTL: invalid or unknown Mode %u\n", @@ -80,7 +75,7 @@ ttl_tg_check(const char *tablename, const void *e, static struct xt_target ttl_tg_reg __read_mostly = { .name = "TTL", - .family = AF_INET, + .family = NFPROTO_IPV4, .target = ttl_tg, .targetsize = sizeof(struct ipt_TTL_info), .table = "mangle", diff --git a/net/ipv4/netfilter/ipt_ULOG.c b/net/ipv4/netfilter/ipt_ULOG.c index b192756c6d0d..18a2826b57c6 100644 --- a/net/ipv4/netfilter/ipt_ULOG.c +++ b/net/ipv4/netfilter/ipt_ULOG.c @@ -281,18 +281,14 @@ alloc_failure: } static unsigned int -ulog_tg(struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, unsigned int hooknum, - const struct xt_target *target, const void *targinfo) +ulog_tg(struct sk_buff *skb, const struct xt_target_param *par) { - struct ipt_ulog_info *loginfo = (struct ipt_ulog_info *) targinfo; - - ipt_ulog_packet(hooknum, skb, in, out, loginfo, NULL); - + ipt_ulog_packet(par->hooknum, skb, par->in, par->out, + par->targinfo, NULL); return XT_CONTINUE; } -static void ipt_logfn(unsigned int pf, +static void ipt_logfn(u_int8_t pf, unsigned int hooknum, const struct sk_buff *skb, const struct net_device *in, @@ -317,12 +313,9 @@ static void ipt_logfn(unsigned int pf, ipt_ulog_packet(hooknum, skb, in, out, &loginfo, prefix); } -static bool -ulog_tg_check(const char *tablename, const void *e, - const struct xt_target *target, void *targinfo, - unsigned int hookmask) +static bool ulog_tg_check(const struct xt_tgchk_param *par) { - const struct ipt_ulog_info *loginfo = targinfo; + const struct ipt_ulog_info *loginfo = par->targinfo; if (loginfo->prefix[sizeof(loginfo->prefix) - 1] != '\0') { pr_debug("ipt_ULOG: prefix term %i\n", @@ -374,7 +367,7 @@ static int ulog_tg_compat_to_user(void __user *dst, void *src) static struct xt_target ulog_tg_reg __read_mostly = { .name = "ULOG", - .family = AF_INET, + .family = NFPROTO_IPV4, .target = ulog_tg, .targetsize = sizeof(struct ipt_ulog_info), .checkentry = ulog_tg_check, @@ -419,7 +412,7 @@ static int __init ulog_tg_init(void) return ret; } if (nflog) - nf_log_register(PF_INET, &ipt_ulog_logger); + nf_log_register(NFPROTO_IPV4, &ipt_ulog_logger); return 0; } diff --git a/net/ipv4/netfilter/ipt_addrtype.c b/net/ipv4/netfilter/ipt_addrtype.c index 462a22c97877..88762f02779d 100644 --- a/net/ipv4/netfilter/ipt_addrtype.c +++ b/net/ipv4/netfilter/ipt_addrtype.c @@ -30,12 +30,9 @@ static inline bool match_type(const struct net_device *dev, __be32 addr, } static bool -addrtype_mt_v0(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, - bool *hotdrop) +addrtype_mt_v0(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct ipt_addrtype_info *info = matchinfo; + const struct ipt_addrtype_info *info = par->matchinfo; const struct iphdr *iph = ip_hdr(skb); bool ret = true; @@ -50,20 +47,17 @@ addrtype_mt_v0(const struct sk_buff *skb, const struct net_device *in, } static bool -addrtype_mt_v1(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, - bool *hotdrop) +addrtype_mt_v1(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct ipt_addrtype_info_v1 *info = matchinfo; + const struct ipt_addrtype_info_v1 *info = par->matchinfo; const struct iphdr *iph = ip_hdr(skb); const struct net_device *dev = NULL; bool ret = true; if (info->flags & IPT_ADDRTYPE_LIMIT_IFACE_IN) - dev = in; + dev = par->in; else if (info->flags & IPT_ADDRTYPE_LIMIT_IFACE_OUT) - dev = out; + dev = par->out; if (info->source) ret &= match_type(dev, iph->saddr, info->source) ^ @@ -74,12 +68,9 @@ addrtype_mt_v1(const struct sk_buff *skb, const struct net_device *in, return ret; } -static bool -addrtype_mt_checkentry_v1(const char *tablename, const void *ip_void, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +static bool addrtype_mt_checkentry_v1(const struct xt_mtchk_param *par) { - struct ipt_addrtype_info_v1 *info = matchinfo; + struct ipt_addrtype_info_v1 *info = par->matchinfo; if (info->flags & IPT_ADDRTYPE_LIMIT_IFACE_IN && info->flags & IPT_ADDRTYPE_LIMIT_IFACE_OUT) { @@ -88,14 +79,16 @@ addrtype_mt_checkentry_v1(const char *tablename, const void *ip_void, return false; } - if (hook_mask & (1 << NF_INET_PRE_ROUTING | 1 << NF_INET_LOCAL_IN) && + if (par->hook_mask & ((1 << NF_INET_PRE_ROUTING) | + (1 << NF_INET_LOCAL_IN)) && info->flags & IPT_ADDRTYPE_LIMIT_IFACE_OUT) { printk(KERN_ERR "ipt_addrtype: output interface limitation " "not valid in PRE_ROUTING and INPUT\n"); return false; } - if (hook_mask & (1 << NF_INET_POST_ROUTING | 1 << NF_INET_LOCAL_OUT) && + if (par->hook_mask & ((1 << NF_INET_POST_ROUTING) | + (1 << NF_INET_LOCAL_OUT)) && info->flags & IPT_ADDRTYPE_LIMIT_IFACE_IN) { printk(KERN_ERR "ipt_addrtype: input interface limitation " "not valid in POST_ROUTING and OUTPUT\n"); @@ -108,14 +101,14 @@ addrtype_mt_checkentry_v1(const char *tablename, const void *ip_void, static struct xt_match addrtype_mt_reg[] __read_mostly = { { .name = "addrtype", - .family = AF_INET, + .family = NFPROTO_IPV4, .match = addrtype_mt_v0, .matchsize = sizeof(struct ipt_addrtype_info), .me = THIS_MODULE }, { .name = "addrtype", - .family = AF_INET, + .family = NFPROTO_IPV4, .revision = 1, .match = addrtype_mt_v1, .checkentry = addrtype_mt_checkentry_v1, diff --git a/net/ipv4/netfilter/ipt_ah.c b/net/ipv4/netfilter/ipt_ah.c index e977989629c7..0104c0b399de 100644 --- a/net/ipv4/netfilter/ipt_ah.c +++ b/net/ipv4/netfilter/ipt_ah.c @@ -36,27 +36,23 @@ spi_match(u_int32_t min, u_int32_t max, u_int32_t spi, bool invert) return r; } -static bool -ah_mt(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, bool *hotdrop) +static bool ah_mt(const struct sk_buff *skb, const struct xt_match_param *par) { struct ip_auth_hdr _ahdr; const struct ip_auth_hdr *ah; - const struct ipt_ah *ahinfo = matchinfo; + const struct ipt_ah *ahinfo = par->matchinfo; /* Must not be a fragment. */ - if (offset) + if (par->fragoff != 0) return false; - ah = skb_header_pointer(skb, protoff, - sizeof(_ahdr), &_ahdr); + ah = skb_header_pointer(skb, par->thoff, sizeof(_ahdr), &_ahdr); if (ah == NULL) { /* We've been asked to examine this packet, and we * can't. Hence, no choice but to drop. */ duprintf("Dropping evil AH tinygram.\n"); - *hotdrop = true; + *par->hotdrop = true; return 0; } @@ -65,13 +61,9 @@ ah_mt(const struct sk_buff *skb, const struct net_device *in, !!(ahinfo->invflags & IPT_AH_INV_SPI)); } -/* Called when user tries to insert an entry of this type. */ -static bool -ah_mt_check(const char *tablename, const void *ip_void, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +static bool ah_mt_check(const struct xt_mtchk_param *par) { - const struct ipt_ah *ahinfo = matchinfo; + const struct ipt_ah *ahinfo = par->matchinfo; /* Must specify no unknown invflags */ if (ahinfo->invflags & ~IPT_AH_INV_MASK) { @@ -83,7 +75,7 @@ ah_mt_check(const char *tablename, const void *ip_void, static struct xt_match ah_mt_reg __read_mostly = { .name = "ah", - .family = AF_INET, + .family = NFPROTO_IPV4, .match = ah_mt, .matchsize = sizeof(struct ipt_ah), .proto = IPPROTO_AH, diff --git a/net/ipv4/netfilter/ipt_ecn.c b/net/ipv4/netfilter/ipt_ecn.c index 749de8284ce5..6289b64144c6 100644 --- a/net/ipv4/netfilter/ipt_ecn.c +++ b/net/ipv4/netfilter/ipt_ecn.c @@ -67,12 +67,9 @@ static inline bool match_tcp(const struct sk_buff *skb, return true; } -static bool -ecn_mt(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, bool *hotdrop) +static bool ecn_mt(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct ipt_ecn_info *info = matchinfo; + const struct ipt_ecn_info *info = par->matchinfo; if (info->operation & IPT_ECN_OP_MATCH_IP) if (!match_ip(skb, info)) @@ -81,20 +78,17 @@ ecn_mt(const struct sk_buff *skb, const struct net_device *in, if (info->operation & (IPT_ECN_OP_MATCH_ECE|IPT_ECN_OP_MATCH_CWR)) { if (ip_hdr(skb)->protocol != IPPROTO_TCP) return false; - if (!match_tcp(skb, info, hotdrop)) + if (!match_tcp(skb, info, par->hotdrop)) return false; } return true; } -static bool -ecn_mt_check(const char *tablename, const void *ip_void, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +static bool ecn_mt_check(const struct xt_mtchk_param *par) { - const struct ipt_ecn_info *info = matchinfo; - const struct ipt_ip *ip = ip_void; + const struct ipt_ecn_info *info = par->matchinfo; + const struct ipt_ip *ip = par->entryinfo; if (info->operation & IPT_ECN_OP_MATCH_MASK) return false; @@ -114,7 +108,7 @@ ecn_mt_check(const char *tablename, const void *ip_void, static struct xt_match ecn_mt_reg __read_mostly = { .name = "ecn", - .family = AF_INET, + .family = NFPROTO_IPV4, .match = ecn_mt, .matchsize = sizeof(struct ipt_ecn_info), .checkentry = ecn_mt_check, diff --git a/net/ipv4/netfilter/ipt_ttl.c b/net/ipv4/netfilter/ipt_ttl.c index e0b8caeb710c..297f1cbf4ff5 100644 --- a/net/ipv4/netfilter/ipt_ttl.c +++ b/net/ipv4/netfilter/ipt_ttl.c @@ -18,12 +18,9 @@ MODULE_AUTHOR("Harald Welte <laforge@netfilter.org>"); MODULE_DESCRIPTION("Xtables: IPv4 TTL field match"); MODULE_LICENSE("GPL"); -static bool -ttl_mt(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, bool *hotdrop) +static bool ttl_mt(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct ipt_ttl_info *info = matchinfo; + const struct ipt_ttl_info *info = par->matchinfo; const u8 ttl = ip_hdr(skb)->ttl; switch (info->mode) { @@ -46,7 +43,7 @@ ttl_mt(const struct sk_buff *skb, const struct net_device *in, static struct xt_match ttl_mt_reg __read_mostly = { .name = "ttl", - .family = AF_INET, + .family = NFPROTO_IPV4, .match = ttl_mt, .matchsize = sizeof(struct ipt_ttl_info), .me = THIS_MODULE, diff --git a/net/ipv4/netfilter/iptable_filter.c b/net/ipv4/netfilter/iptable_filter.c index 1ea677dcf845..c9224310ebae 100644 --- a/net/ipv4/netfilter/iptable_filter.c +++ b/net/ipv4/netfilter/iptable_filter.c @@ -70,7 +70,7 @@ ipt_local_in_hook(unsigned int hook, int (*okfn)(struct sk_buff *)) { return ipt_do_table(skb, hook, in, out, - nf_local_in_net(in, out)->ipv4.iptable_filter); + dev_net(in)->ipv4.iptable_filter); } static unsigned int @@ -81,7 +81,7 @@ ipt_hook(unsigned int hook, int (*okfn)(struct sk_buff *)) { return ipt_do_table(skb, hook, in, out, - nf_forward_net(in, out)->ipv4.iptable_filter); + dev_net(in)->ipv4.iptable_filter); } static unsigned int @@ -101,7 +101,7 @@ ipt_local_out_hook(unsigned int hook, } return ipt_do_table(skb, hook, in, out, - nf_local_out_net(in, out)->ipv4.iptable_filter); + dev_net(out)->ipv4.iptable_filter); } static struct nf_hook_ops ipt_ops[] __read_mostly = { diff --git a/net/ipv4/netfilter/iptable_mangle.c b/net/ipv4/netfilter/iptable_mangle.c index da59182f2226..69f2c4287146 100644 --- a/net/ipv4/netfilter/iptable_mangle.c +++ b/net/ipv4/netfilter/iptable_mangle.c @@ -81,7 +81,7 @@ ipt_pre_routing_hook(unsigned int hook, int (*okfn)(struct sk_buff *)) { return ipt_do_table(skb, hook, in, out, - nf_pre_routing_net(in, out)->ipv4.iptable_mangle); + dev_net(in)->ipv4.iptable_mangle); } static unsigned int @@ -92,7 +92,7 @@ ipt_post_routing_hook(unsigned int hook, int (*okfn)(struct sk_buff *)) { return ipt_do_table(skb, hook, in, out, - nf_post_routing_net(in, out)->ipv4.iptable_mangle); + dev_net(out)->ipv4.iptable_mangle); } static unsigned int @@ -103,7 +103,7 @@ ipt_local_in_hook(unsigned int hook, int (*okfn)(struct sk_buff *)) { return ipt_do_table(skb, hook, in, out, - nf_local_in_net(in, out)->ipv4.iptable_mangle); + dev_net(in)->ipv4.iptable_mangle); } static unsigned int @@ -114,7 +114,7 @@ ipt_forward_hook(unsigned int hook, int (*okfn)(struct sk_buff *)) { return ipt_do_table(skb, hook, in, out, - nf_forward_net(in, out)->ipv4.iptable_mangle); + dev_net(in)->ipv4.iptable_mangle); } static unsigned int @@ -147,7 +147,7 @@ ipt_local_hook(unsigned int hook, tos = iph->tos; ret = ipt_do_table(skb, hook, in, out, - nf_local_out_net(in, out)->ipv4.iptable_mangle); + dev_net(out)->ipv4.iptable_mangle); /* Reroute for ANY change. */ if (ret != NF_DROP && ret != NF_STOLEN && ret != NF_QUEUE) { iph = ip_hdr(skb); diff --git a/net/ipv4/netfilter/iptable_raw.c b/net/ipv4/netfilter/iptable_raw.c index fddce7754b72..8faebfe638f1 100644 --- a/net/ipv4/netfilter/iptable_raw.c +++ b/net/ipv4/netfilter/iptable_raw.c @@ -53,7 +53,7 @@ ipt_hook(unsigned int hook, int (*okfn)(struct sk_buff *)) { return ipt_do_table(skb, hook, in, out, - nf_pre_routing_net(in, out)->ipv4.iptable_raw); + dev_net(in)->ipv4.iptable_raw); } static unsigned int @@ -72,7 +72,7 @@ ipt_local_hook(unsigned int hook, return NF_ACCEPT; } return ipt_do_table(skb, hook, in, out, - nf_local_out_net(in, out)->ipv4.iptable_raw); + dev_net(out)->ipv4.iptable_raw); } /* 'raw' is the very first table. */ diff --git a/net/ipv4/netfilter/iptable_security.c b/net/ipv4/netfilter/iptable_security.c index db6d312128e1..36f3be3cc428 100644 --- a/net/ipv4/netfilter/iptable_security.c +++ b/net/ipv4/netfilter/iptable_security.c @@ -73,7 +73,7 @@ ipt_local_in_hook(unsigned int hook, int (*okfn)(struct sk_buff *)) { return ipt_do_table(skb, hook, in, out, - nf_local_in_net(in, out)->ipv4.iptable_security); + dev_net(in)->ipv4.iptable_security); } static unsigned int @@ -84,7 +84,7 @@ ipt_forward_hook(unsigned int hook, int (*okfn)(struct sk_buff *)) { return ipt_do_table(skb, hook, in, out, - nf_forward_net(in, out)->ipv4.iptable_security); + dev_net(in)->ipv4.iptable_security); } static unsigned int @@ -103,7 +103,7 @@ ipt_local_out_hook(unsigned int hook, return NF_ACCEPT; } return ipt_do_table(skb, hook, in, out, - nf_local_out_net(in, out)->ipv4.iptable_security); + dev_net(out)->ipv4.iptable_security); } static struct nf_hook_ops ipt_ops[] __read_mostly = { diff --git a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c index 5a955c440364..4a7c35275396 100644 --- a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c +++ b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c @@ -1,3 +1,4 @@ + /* (C) 1999-2001 Paul `Rusty' Russell * (C) 2002-2004 Netfilter Core Team <coreteam@netfilter.org> * @@ -24,6 +25,7 @@ #include <net/netfilter/nf_conntrack_core.h> #include <net/netfilter/ipv4/nf_conntrack_ipv4.h> #include <net/netfilter/nf_nat_helper.h> +#include <net/netfilter/ipv4/nf_defrag_ipv4.h> int (*nf_nat_seq_adjust_hook)(struct sk_buff *skb, struct nf_conn *ct, @@ -63,23 +65,6 @@ static int ipv4_print_tuple(struct seq_file *s, NIPQUAD(tuple->dst.u3.ip)); } -/* Returns new sk_buff, or NULL */ -static int nf_ct_ipv4_gather_frags(struct sk_buff *skb, u_int32_t user) -{ - int err; - - skb_orphan(skb); - - local_bh_disable(); - err = ip_defrag(skb, user); - local_bh_enable(); - - if (!err) - ip_send_check(ip_hdr(skb)); - - return err; -} - static int ipv4_get_l4proto(const struct sk_buff *skb, unsigned int nhoff, unsigned int *dataoff, u_int8_t *protonum) { @@ -144,35 +129,13 @@ out: return nf_conntrack_confirm(skb); } -static unsigned int ipv4_conntrack_defrag(unsigned int hooknum, - struct sk_buff *skb, - const struct net_device *in, - const struct net_device *out, - int (*okfn)(struct sk_buff *)) -{ - /* Previously seen (loopback)? Ignore. Do this before - fragment check. */ - if (skb->nfct) - return NF_ACCEPT; - - /* Gather fragments. */ - if (ip_hdr(skb)->frag_off & htons(IP_MF | IP_OFFSET)) { - if (nf_ct_ipv4_gather_frags(skb, - hooknum == NF_INET_PRE_ROUTING ? - IP_DEFRAG_CONNTRACK_IN : - IP_DEFRAG_CONNTRACK_OUT)) - return NF_STOLEN; - } - return NF_ACCEPT; -} - static unsigned int ipv4_conntrack_in(unsigned int hooknum, struct sk_buff *skb, const struct net_device *in, const struct net_device *out, int (*okfn)(struct sk_buff *)) { - return nf_conntrack_in(PF_INET, hooknum, skb); + return nf_conntrack_in(dev_net(in), PF_INET, hooknum, skb); } static unsigned int ipv4_conntrack_local(unsigned int hooknum, @@ -188,20 +151,13 @@ static unsigned int ipv4_conntrack_local(unsigned int hooknum, printk("ipt_hook: happy cracking.\n"); return NF_ACCEPT; } - return nf_conntrack_in(PF_INET, hooknum, skb); + return nf_conntrack_in(dev_net(out), PF_INET, hooknum, skb); } /* Connection tracking may drop packets, but never alters them, so make it the first hook. */ static struct nf_hook_ops ipv4_conntrack_ops[] __read_mostly = { { - .hook = ipv4_conntrack_defrag, - .owner = THIS_MODULE, - .pf = PF_INET, - .hooknum = NF_INET_PRE_ROUTING, - .priority = NF_IP_PRI_CONNTRACK_DEFRAG, - }, - { .hook = ipv4_conntrack_in, .owner = THIS_MODULE, .pf = PF_INET, @@ -209,13 +165,6 @@ static struct nf_hook_ops ipv4_conntrack_ops[] __read_mostly = { .priority = NF_IP_PRI_CONNTRACK, }, { - .hook = ipv4_conntrack_defrag, - .owner = THIS_MODULE, - .pf = PF_INET, - .hooknum = NF_INET_LOCAL_OUT, - .priority = NF_IP_PRI_CONNTRACK_DEFRAG, - }, - { .hook = ipv4_conntrack_local, .owner = THIS_MODULE, .pf = PF_INET, @@ -254,7 +203,7 @@ static ctl_table ip_ct_sysctl_table[] = { { .ctl_name = NET_IPV4_NF_CONNTRACK_COUNT, .procname = "ip_conntrack_count", - .data = &nf_conntrack_count, + .data = &init_net.ct.count, .maxlen = sizeof(int), .mode = 0444, .proc_handler = &proc_dointvec, @@ -270,7 +219,7 @@ static ctl_table ip_ct_sysctl_table[] = { { .ctl_name = NET_IPV4_NF_CONNTRACK_CHECKSUM, .procname = "ip_conntrack_checksum", - .data = &nf_conntrack_checksum, + .data = &init_net.ct.sysctl_checksum, .maxlen = sizeof(int), .mode = 0644, .proc_handler = &proc_dointvec, @@ -278,7 +227,7 @@ static ctl_table ip_ct_sysctl_table[] = { { .ctl_name = NET_IPV4_NF_CONNTRACK_LOG_INVALID, .procname = "ip_conntrack_log_invalid", - .data = &nf_ct_log_invalid, + .data = &init_net.ct.sysctl_log_invalid, .maxlen = sizeof(unsigned int), .mode = 0644, .proc_handler = &proc_dointvec_minmax, @@ -323,7 +272,7 @@ getorigdst(struct sock *sk, int optval, void __user *user, int *len) return -EINVAL; } - h = nf_conntrack_find_get(&tuple); + h = nf_conntrack_find_get(sock_net(sk), &tuple); if (h) { struct sockaddr_in sin; struct nf_conn *ct = nf_ct_tuplehash_to_ctrack(h); @@ -422,6 +371,7 @@ static int __init nf_conntrack_l3proto_ipv4_init(void) int ret = 0; need_conntrack(); + nf_defrag_ipv4_enable(); ret = nf_register_sockopt(&so_getorigdst); if (ret < 0) { diff --git a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4_compat.c b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4_compat.c index 3a020720e40b..313ebf00ee36 100644 --- a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4_compat.c +++ b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4_compat.c @@ -21,18 +21,20 @@ #include <net/netfilter/nf_conntrack_acct.h> struct ct_iter_state { + struct seq_net_private p; unsigned int bucket; }; static struct hlist_node *ct_get_first(struct seq_file *seq) { + struct net *net = seq_file_net(seq); struct ct_iter_state *st = seq->private; struct hlist_node *n; for (st->bucket = 0; st->bucket < nf_conntrack_htable_size; st->bucket++) { - n = rcu_dereference(nf_conntrack_hash[st->bucket].first); + n = rcu_dereference(net->ct.hash[st->bucket].first); if (n) return n; } @@ -42,13 +44,14 @@ static struct hlist_node *ct_get_first(struct seq_file *seq) static struct hlist_node *ct_get_next(struct seq_file *seq, struct hlist_node *head) { + struct net *net = seq_file_net(seq); struct ct_iter_state *st = seq->private; head = rcu_dereference(head->next); while (head == NULL) { if (++st->bucket >= nf_conntrack_htable_size) return NULL; - head = rcu_dereference(nf_conntrack_hash[st->bucket].first); + head = rcu_dereference(net->ct.hash[st->bucket].first); } return head; } @@ -158,8 +161,8 @@ static const struct seq_operations ct_seq_ops = { static int ct_open(struct inode *inode, struct file *file) { - return seq_open_private(file, &ct_seq_ops, - sizeof(struct ct_iter_state)); + return seq_open_net(inode, file, &ct_seq_ops, + sizeof(struct ct_iter_state)); } static const struct file_operations ct_file_ops = { @@ -167,21 +170,23 @@ static const struct file_operations ct_file_ops = { .open = ct_open, .read = seq_read, .llseek = seq_lseek, - .release = seq_release_private, + .release = seq_release_net, }; /* expects */ struct ct_expect_iter_state { + struct seq_net_private p; unsigned int bucket; }; static struct hlist_node *ct_expect_get_first(struct seq_file *seq) { + struct net *net = seq_file_net(seq); struct ct_expect_iter_state *st = seq->private; struct hlist_node *n; for (st->bucket = 0; st->bucket < nf_ct_expect_hsize; st->bucket++) { - n = rcu_dereference(nf_ct_expect_hash[st->bucket].first); + n = rcu_dereference(net->ct.expect_hash[st->bucket].first); if (n) return n; } @@ -191,13 +196,14 @@ static struct hlist_node *ct_expect_get_first(struct seq_file *seq) static struct hlist_node *ct_expect_get_next(struct seq_file *seq, struct hlist_node *head) { + struct net *net = seq_file_net(seq); struct ct_expect_iter_state *st = seq->private; head = rcu_dereference(head->next); while (head == NULL) { if (++st->bucket >= nf_ct_expect_hsize) return NULL; - head = rcu_dereference(nf_ct_expect_hash[st->bucket].first); + head = rcu_dereference(net->ct.expect_hash[st->bucket].first); } return head; } @@ -265,8 +271,8 @@ static const struct seq_operations exp_seq_ops = { static int exp_open(struct inode *inode, struct file *file) { - return seq_open_private(file, &exp_seq_ops, - sizeof(struct ct_expect_iter_state)); + return seq_open_net(inode, file, &exp_seq_ops, + sizeof(struct ct_expect_iter_state)); } static const struct file_operations ip_exp_file_ops = { @@ -274,11 +280,12 @@ static const struct file_operations ip_exp_file_ops = { .open = exp_open, .read = seq_read, .llseek = seq_lseek, - .release = seq_release_private, + .release = seq_release_net, }; static void *ct_cpu_seq_start(struct seq_file *seq, loff_t *pos) { + struct net *net = seq_file_net(seq); int cpu; if (*pos == 0) @@ -288,7 +295,7 @@ static void *ct_cpu_seq_start(struct seq_file *seq, loff_t *pos) if (!cpu_possible(cpu)) continue; *pos = cpu+1; - return &per_cpu(nf_conntrack_stat, cpu); + return per_cpu_ptr(net->ct.stat, cpu); } return NULL; @@ -296,13 +303,14 @@ static void *ct_cpu_seq_start(struct seq_file *seq, loff_t *pos) static void *ct_cpu_seq_next(struct seq_file *seq, void *v, loff_t *pos) { + struct net *net = seq_file_net(seq); int cpu; for (cpu = *pos; cpu < NR_CPUS; ++cpu) { if (!cpu_possible(cpu)) continue; *pos = cpu+1; - return &per_cpu(nf_conntrack_stat, cpu); + return per_cpu_ptr(net->ct.stat, cpu); } return NULL; @@ -314,7 +322,8 @@ static void ct_cpu_seq_stop(struct seq_file *seq, void *v) static int ct_cpu_seq_show(struct seq_file *seq, void *v) { - unsigned int nr_conntracks = atomic_read(&nf_conntrack_count); + struct net *net = seq_file_net(seq); + unsigned int nr_conntracks = atomic_read(&net->ct.count); const struct ip_conntrack_stat *st = v; if (v == SEQ_START_TOKEN) { @@ -354,7 +363,8 @@ static const struct seq_operations ct_cpu_seq_ops = { static int ct_cpu_seq_open(struct inode *inode, struct file *file) { - return seq_open(file, &ct_cpu_seq_ops); + return seq_open_net(inode, file, &ct_cpu_seq_ops, + sizeof(struct seq_net_private)); } static const struct file_operations ct_cpu_seq_fops = { @@ -362,39 +372,54 @@ static const struct file_operations ct_cpu_seq_fops = { .open = ct_cpu_seq_open, .read = seq_read, .llseek = seq_lseek, - .release = seq_release, + .release = seq_release_net, }; -int __init nf_conntrack_ipv4_compat_init(void) +static int __net_init ip_conntrack_net_init(struct net *net) { struct proc_dir_entry *proc, *proc_exp, *proc_stat; - proc = proc_net_fops_create(&init_net, "ip_conntrack", 0440, &ct_file_ops); + proc = proc_net_fops_create(net, "ip_conntrack", 0440, &ct_file_ops); if (!proc) goto err1; - proc_exp = proc_net_fops_create(&init_net, "ip_conntrack_expect", 0440, + proc_exp = proc_net_fops_create(net, "ip_conntrack_expect", 0440, &ip_exp_file_ops); if (!proc_exp) goto err2; proc_stat = proc_create("ip_conntrack", S_IRUGO, - init_net.proc_net_stat, &ct_cpu_seq_fops); + net->proc_net_stat, &ct_cpu_seq_fops); if (!proc_stat) goto err3; return 0; err3: - proc_net_remove(&init_net, "ip_conntrack_expect"); + proc_net_remove(net, "ip_conntrack_expect"); err2: - proc_net_remove(&init_net, "ip_conntrack"); + proc_net_remove(net, "ip_conntrack"); err1: return -ENOMEM; } +static void __net_exit ip_conntrack_net_exit(struct net *net) +{ + remove_proc_entry("ip_conntrack", net->proc_net_stat); + proc_net_remove(net, "ip_conntrack_expect"); + proc_net_remove(net, "ip_conntrack"); +} + +static struct pernet_operations ip_conntrack_net_ops = { + .init = ip_conntrack_net_init, + .exit = ip_conntrack_net_exit, +}; + +int __init nf_conntrack_ipv4_compat_init(void) +{ + return register_pernet_subsys(&ip_conntrack_net_ops); +} + void __exit nf_conntrack_ipv4_compat_fini(void) { - remove_proc_entry("ip_conntrack", init_net.proc_net_stat); - proc_net_remove(&init_net, "ip_conntrack_expect"); - proc_net_remove(&init_net, "ip_conntrack"); + unregister_pernet_subsys(&ip_conntrack_net_ops); } diff --git a/net/ipv4/netfilter/nf_conntrack_proto_icmp.c b/net/ipv4/netfilter/nf_conntrack_proto_icmp.c index 97791048fa9b..4e8879220222 100644 --- a/net/ipv4/netfilter/nf_conntrack_proto_icmp.c +++ b/net/ipv4/netfilter/nf_conntrack_proto_icmp.c @@ -79,7 +79,7 @@ static int icmp_packet(struct nf_conn *ct, const struct sk_buff *skb, unsigned int dataoff, enum ip_conntrack_info ctinfo, - int pf, + u_int8_t pf, unsigned int hooknum) { /* Try to delete connection immediately after all replies: @@ -91,7 +91,7 @@ static int icmp_packet(struct nf_conn *ct, nf_ct_kill_acct(ct, ctinfo, skb); } else { atomic_inc(&ct->proto.icmp.count); - nf_conntrack_event_cache(IPCT_PROTOINFO_VOLATILE, skb); + nf_conntrack_event_cache(IPCT_PROTOINFO_VOLATILE, ct); nf_ct_refresh_acct(ct, ctinfo, skb, nf_ct_icmp_timeout); } @@ -123,7 +123,7 @@ static bool icmp_new(struct nf_conn *ct, const struct sk_buff *skb, /* Returns conntrack if it dealt with ICMP, and filled in skb fields */ static int -icmp_error_message(struct sk_buff *skb, +icmp_error_message(struct net *net, struct sk_buff *skb, enum ip_conntrack_info *ctinfo, unsigned int hooknum) { @@ -155,7 +155,7 @@ icmp_error_message(struct sk_buff *skb, *ctinfo = IP_CT_RELATED; - h = nf_conntrack_find_get(&innertuple); + h = nf_conntrack_find_get(net, &innertuple); if (!h) { pr_debug("icmp_error_message: no match\n"); return -NF_ACCEPT; @@ -172,8 +172,8 @@ icmp_error_message(struct sk_buff *skb, /* Small and modified version of icmp_rcv */ static int -icmp_error(struct sk_buff *skb, unsigned int dataoff, - enum ip_conntrack_info *ctinfo, int pf, unsigned int hooknum) +icmp_error(struct net *net, struct sk_buff *skb, unsigned int dataoff, + enum ip_conntrack_info *ctinfo, u_int8_t pf, unsigned int hooknum) { const struct icmphdr *icmph; struct icmphdr _ih; @@ -181,16 +181,16 @@ icmp_error(struct sk_buff *skb, unsigned int dataoff, /* Not enough header? */ icmph = skb_header_pointer(skb, ip_hdrlen(skb), sizeof(_ih), &_ih); if (icmph == NULL) { - if (LOG_INVALID(IPPROTO_ICMP)) + if (LOG_INVALID(net, IPPROTO_ICMP)) nf_log_packet(PF_INET, 0, skb, NULL, NULL, NULL, "nf_ct_icmp: short packet "); return -NF_ACCEPT; } /* See ip_conntrack_proto_tcp.c */ - if (nf_conntrack_checksum && hooknum == NF_INET_PRE_ROUTING && + if (net->ct.sysctl_checksum && hooknum == NF_INET_PRE_ROUTING && nf_ip_checksum(skb, hooknum, dataoff, 0)) { - if (LOG_INVALID(IPPROTO_ICMP)) + if (LOG_INVALID(net, IPPROTO_ICMP)) nf_log_packet(PF_INET, 0, skb, NULL, NULL, NULL, "nf_ct_icmp: bad HW ICMP checksum "); return -NF_ACCEPT; @@ -203,7 +203,7 @@ icmp_error(struct sk_buff *skb, unsigned int dataoff, * discarded. */ if (icmph->type > NR_ICMP_TYPES) { - if (LOG_INVALID(IPPROTO_ICMP)) + if (LOG_INVALID(net, IPPROTO_ICMP)) nf_log_packet(PF_INET, 0, skb, NULL, NULL, NULL, "nf_ct_icmp: invalid ICMP type "); return -NF_ACCEPT; @@ -217,7 +217,7 @@ icmp_error(struct sk_buff *skb, unsigned int dataoff, && icmph->type != ICMP_REDIRECT) return NF_ACCEPT; - return icmp_error_message(skb, ctinfo, hooknum); + return icmp_error_message(net, skb, ctinfo, hooknum); } #if defined(CONFIG_NF_CT_NETLINK) || defined(CONFIG_NF_CT_NETLINK_MODULE) diff --git a/net/ipv4/netfilter/nf_defrag_ipv4.c b/net/ipv4/netfilter/nf_defrag_ipv4.c new file mode 100644 index 000000000000..aa2c50a180f7 --- /dev/null +++ b/net/ipv4/netfilter/nf_defrag_ipv4.c @@ -0,0 +1,96 @@ +/* (C) 1999-2001 Paul `Rusty' Russell + * (C) 2002-2004 Netfilter Core Team <coreteam@netfilter.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/types.h> +#include <linux/ip.h> +#include <linux/netfilter.h> +#include <linux/module.h> +#include <linux/skbuff.h> +#include <net/route.h> +#include <net/ip.h> + +#include <linux/netfilter_ipv4.h> +#include <net/netfilter/ipv4/nf_defrag_ipv4.h> + +/* Returns new sk_buff, or NULL */ +static int nf_ct_ipv4_gather_frags(struct sk_buff *skb, u_int32_t user) +{ + int err; + + skb_orphan(skb); + + local_bh_disable(); + err = ip_defrag(skb, user); + local_bh_enable(); + + if (!err) + ip_send_check(ip_hdr(skb)); + + return err; +} + +static unsigned int ipv4_conntrack_defrag(unsigned int hooknum, + struct sk_buff *skb, + const struct net_device *in, + const struct net_device *out, + int (*okfn)(struct sk_buff *)) +{ +#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE) + /* Previously seen (loopback)? Ignore. Do this before + fragment check. */ + if (skb->nfct) + return NF_ACCEPT; +#endif + + /* Gather fragments. */ + if (ip_hdr(skb)->frag_off & htons(IP_MF | IP_OFFSET)) { + if (nf_ct_ipv4_gather_frags(skb, + hooknum == NF_INET_PRE_ROUTING ? + IP_DEFRAG_CONNTRACK_IN : + IP_DEFRAG_CONNTRACK_OUT)) + return NF_STOLEN; + } + return NF_ACCEPT; +} + +static struct nf_hook_ops ipv4_defrag_ops[] = { + { + .hook = ipv4_conntrack_defrag, + .owner = THIS_MODULE, + .pf = PF_INET, + .hooknum = NF_INET_PRE_ROUTING, + .priority = NF_IP_PRI_CONNTRACK_DEFRAG, + }, + { + .hook = ipv4_conntrack_defrag, + .owner = THIS_MODULE, + .pf = PF_INET, + .hooknum = NF_INET_LOCAL_OUT, + .priority = NF_IP_PRI_CONNTRACK_DEFRAG, + }, +}; + +static int __init nf_defrag_init(void) +{ + return nf_register_hooks(ipv4_defrag_ops, ARRAY_SIZE(ipv4_defrag_ops)); +} + +static void __exit nf_defrag_fini(void) +{ + nf_unregister_hooks(ipv4_defrag_ops, ARRAY_SIZE(ipv4_defrag_ops)); +} + +void nf_defrag_ipv4_enable(void) +{ +} +EXPORT_SYMBOL_GPL(nf_defrag_ipv4_enable); + +module_init(nf_defrag_init); +module_exit(nf_defrag_fini); + +MODULE_LICENSE("GPL"); diff --git a/net/ipv4/netfilter/nf_nat_core.c b/net/ipv4/netfilter/nf_nat_core.c index 6c6a3cba8d50..2ac9eaf1a8c9 100644 --- a/net/ipv4/netfilter/nf_nat_core.c +++ b/net/ipv4/netfilter/nf_nat_core.c @@ -37,9 +37,6 @@ static struct nf_conntrack_l3proto *l3proto __read_mostly; /* Calculated at init based on memory size */ static unsigned int nf_nat_htable_size __read_mostly; -static int nf_nat_vmalloced; - -static struct hlist_head *bysource __read_mostly; #define MAX_IP_NAT_PROTO 256 static const struct nf_nat_protocol *nf_nat_protos[MAX_IP_NAT_PROTO] @@ -145,7 +142,8 @@ same_src(const struct nf_conn *ct, /* Only called for SRC manip */ static int -find_appropriate_src(const struct nf_conntrack_tuple *tuple, +find_appropriate_src(struct net *net, + const struct nf_conntrack_tuple *tuple, struct nf_conntrack_tuple *result, const struct nf_nat_range *range) { @@ -155,7 +153,7 @@ find_appropriate_src(const struct nf_conntrack_tuple *tuple, const struct hlist_node *n; rcu_read_lock(); - hlist_for_each_entry_rcu(nat, n, &bysource[h], bysource) { + hlist_for_each_entry_rcu(nat, n, &net->ipv4.nat_bysource[h], bysource) { ct = nat->ct; if (same_src(ct, tuple)) { /* Copy source part from reply tuple. */ @@ -231,6 +229,7 @@ get_unique_tuple(struct nf_conntrack_tuple *tuple, struct nf_conn *ct, enum nf_nat_manip_type maniptype) { + struct net *net = nf_ct_net(ct); const struct nf_nat_protocol *proto; /* 1) If this srcip/proto/src-proto-part is currently mapped, @@ -242,7 +241,7 @@ get_unique_tuple(struct nf_conntrack_tuple *tuple, manips not an issue. */ if (maniptype == IP_NAT_MANIP_SRC && !(range->flags & IP_NAT_RANGE_PROTO_RANDOM)) { - if (find_appropriate_src(orig_tuple, tuple, range)) { + if (find_appropriate_src(net, orig_tuple, tuple, range)) { pr_debug("get_unique_tuple: Found current src map\n"); if (!nf_nat_used_tuple(tuple, ct)) return; @@ -283,6 +282,7 @@ nf_nat_setup_info(struct nf_conn *ct, const struct nf_nat_range *range, enum nf_nat_manip_type maniptype) { + struct net *net = nf_ct_net(ct); struct nf_conntrack_tuple curr_tuple, new_tuple; struct nf_conn_nat *nat; int have_to_hash = !(ct->status & IPS_NAT_DONE_MASK); @@ -334,7 +334,8 @@ nf_nat_setup_info(struct nf_conn *ct, /* nf_conntrack_alter_reply might re-allocate exntension aera */ nat = nfct_nat(ct); nat->ct = ct; - hlist_add_head_rcu(&nat->bysource, &bysource[srchash]); + hlist_add_head_rcu(&nat->bysource, + &net->ipv4.nat_bysource[srchash]); spin_unlock_bh(&nf_nat_lock); } @@ -583,6 +584,40 @@ static struct nf_ct_ext_type nat_extend __read_mostly = { .flags = NF_CT_EXT_F_PREALLOC, }; +static int __net_init nf_nat_net_init(struct net *net) +{ + net->ipv4.nat_bysource = nf_ct_alloc_hashtable(&nf_nat_htable_size, + &net->ipv4.nat_vmalloced); + if (!net->ipv4.nat_bysource) + return -ENOMEM; + return 0; +} + +/* Clear NAT section of all conntracks, in case we're loaded again. */ +static int clean_nat(struct nf_conn *i, void *data) +{ + struct nf_conn_nat *nat = nfct_nat(i); + + if (!nat) + return 0; + memset(nat, 0, sizeof(*nat)); + i->status &= ~(IPS_NAT_MASK | IPS_NAT_DONE_MASK | IPS_SEQ_ADJUST); + return 0; +} + +static void __net_exit nf_nat_net_exit(struct net *net) +{ + nf_ct_iterate_cleanup(net, &clean_nat, NULL); + synchronize_rcu(); + nf_ct_free_hashtable(net->ipv4.nat_bysource, net->ipv4.nat_vmalloced, + nf_nat_htable_size); +} + +static struct pernet_operations nf_nat_net_ops = { + .init = nf_nat_net_init, + .exit = nf_nat_net_exit, +}; + static int __init nf_nat_init(void) { size_t i; @@ -599,12 +634,9 @@ static int __init nf_nat_init(void) /* Leave them the same for the moment. */ nf_nat_htable_size = nf_conntrack_htable_size; - bysource = nf_ct_alloc_hashtable(&nf_nat_htable_size, - &nf_nat_vmalloced); - if (!bysource) { - ret = -ENOMEM; + ret = register_pernet_subsys(&nf_nat_net_ops); + if (ret < 0) goto cleanup_extend; - } /* Sew in builtin protocols. */ spin_lock_bh(&nf_nat_lock); @@ -629,23 +661,9 @@ static int __init nf_nat_init(void) return ret; } -/* Clear NAT section of all conntracks, in case we're loaded again. */ -static int clean_nat(struct nf_conn *i, void *data) -{ - struct nf_conn_nat *nat = nfct_nat(i); - - if (!nat) - return 0; - memset(nat, 0, sizeof(*nat)); - i->status &= ~(IPS_NAT_MASK | IPS_NAT_DONE_MASK | IPS_SEQ_ADJUST); - return 0; -} - static void __exit nf_nat_cleanup(void) { - nf_ct_iterate_cleanup(&clean_nat, NULL); - synchronize_rcu(); - nf_ct_free_hashtable(bysource, nf_nat_vmalloced, nf_nat_htable_size); + unregister_pernet_subsys(&nf_nat_net_ops); nf_ct_l3proto_put(l3proto); nf_ct_extend_unregister(&nat_extend); rcu_assign_pointer(nf_nat_seq_adjust_hook, NULL); diff --git a/net/ipv4/netfilter/nf_nat_helper.c b/net/ipv4/netfilter/nf_nat_helper.c index 112dcfa12900..cf7a42bf9820 100644 --- a/net/ipv4/netfilter/nf_nat_helper.c +++ b/net/ipv4/netfilter/nf_nat_helper.c @@ -193,7 +193,7 @@ nf_nat_mangle_tcp_packet(struct sk_buff *skb, nf_conntrack_tcp_update(skb, ip_hdrlen(skb), ct, CTINFO2DIR(ctinfo)); - nf_conntrack_event_cache(IPCT_NATSEQADJ, skb); + nf_conntrack_event_cache(IPCT_NATSEQADJ, ct); } return 1; } diff --git a/net/ipv4/netfilter/nf_nat_pptp.c b/net/ipv4/netfilter/nf_nat_pptp.c index da3d91a5ef5c..9eb171056c63 100644 --- a/net/ipv4/netfilter/nf_nat_pptp.c +++ b/net/ipv4/netfilter/nf_nat_pptp.c @@ -40,6 +40,7 @@ MODULE_ALIAS("ip_nat_pptp"); static void pptp_nat_expected(struct nf_conn *ct, struct nf_conntrack_expect *exp) { + struct net *net = nf_ct_net(ct); const struct nf_conn *master = ct->master; struct nf_conntrack_expect *other_exp; struct nf_conntrack_tuple t; @@ -73,7 +74,7 @@ static void pptp_nat_expected(struct nf_conn *ct, pr_debug("trying to unexpect other dir: "); nf_ct_dump_tuple_ip(&t); - other_exp = nf_ct_expect_find_get(&t); + other_exp = nf_ct_expect_find_get(net, &t); if (other_exp) { nf_ct_unexpect_related(other_exp); nf_ct_expect_put(other_exp); diff --git a/net/ipv4/netfilter/nf_nat_rule.c b/net/ipv4/netfilter/nf_nat_rule.c index e8b4d0d4439e..bea54a685109 100644 --- a/net/ipv4/netfilter/nf_nat_rule.c +++ b/net/ipv4/netfilter/nf_nat_rule.c @@ -33,7 +33,7 @@ static struct struct ipt_replace repl; struct ipt_standard entries[3]; struct ipt_error term; -} nat_initial_table __initdata = { +} nat_initial_table __net_initdata = { .repl = { .name = "nat", .valid_hooks = NAT_VALID_HOOKS, @@ -58,47 +58,42 @@ static struct .term = IPT_ERROR_INIT, /* ERROR */ }; -static struct xt_table __nat_table = { +static struct xt_table nat_table = { .name = "nat", .valid_hooks = NAT_VALID_HOOKS, .lock = __RW_LOCK_UNLOCKED(__nat_table.lock), .me = THIS_MODULE, .af = AF_INET, }; -static struct xt_table *nat_table; /* Source NAT */ -static unsigned int ipt_snat_target(struct sk_buff *skb, - const struct net_device *in, - const struct net_device *out, - unsigned int hooknum, - const struct xt_target *target, - const void *targinfo) +static unsigned int +ipt_snat_target(struct sk_buff *skb, const struct xt_target_param *par) { struct nf_conn *ct; enum ip_conntrack_info ctinfo; - const struct nf_nat_multi_range_compat *mr = targinfo; + const struct nf_nat_multi_range_compat *mr = par->targinfo; - NF_CT_ASSERT(hooknum == NF_INET_POST_ROUTING); + NF_CT_ASSERT(par->hooknum == NF_INET_POST_ROUTING); ct = nf_ct_get(skb, &ctinfo); /* Connection must be valid and new. */ NF_CT_ASSERT(ct && (ctinfo == IP_CT_NEW || ctinfo == IP_CT_RELATED || ctinfo == IP_CT_RELATED + IP_CT_IS_REPLY)); - NF_CT_ASSERT(out); + NF_CT_ASSERT(par->out != NULL); return nf_nat_setup_info(ct, &mr->range[0], IP_NAT_MANIP_SRC); } /* Before 2.6.11 we did implicit source NAT if required. Warn about change. */ -static void warn_if_extra_mangle(__be32 dstip, __be32 srcip) +static void warn_if_extra_mangle(struct net *net, __be32 dstip, __be32 srcip) { static int warned = 0; struct flowi fl = { .nl_u = { .ip4_u = { .daddr = dstip } } }; struct rtable *rt; - if (ip_route_output_key(&init_net, &rt, &fl) != 0) + if (ip_route_output_key(net, &rt, &fl) != 0) return; if (rt->rt_src != srcip && !warned) { @@ -110,40 +105,32 @@ static void warn_if_extra_mangle(__be32 dstip, __be32 srcip) ip_rt_put(rt); } -static unsigned int ipt_dnat_target(struct sk_buff *skb, - const struct net_device *in, - const struct net_device *out, - unsigned int hooknum, - const struct xt_target *target, - const void *targinfo) +static unsigned int +ipt_dnat_target(struct sk_buff *skb, const struct xt_target_param *par) { struct nf_conn *ct; enum ip_conntrack_info ctinfo; - const struct nf_nat_multi_range_compat *mr = targinfo; + const struct nf_nat_multi_range_compat *mr = par->targinfo; - NF_CT_ASSERT(hooknum == NF_INET_PRE_ROUTING || - hooknum == NF_INET_LOCAL_OUT); + NF_CT_ASSERT(par->hooknum == NF_INET_PRE_ROUTING || + par->hooknum == NF_INET_LOCAL_OUT); ct = nf_ct_get(skb, &ctinfo); /* Connection must be valid and new. */ NF_CT_ASSERT(ct && (ctinfo == IP_CT_NEW || ctinfo == IP_CT_RELATED)); - if (hooknum == NF_INET_LOCAL_OUT && + if (par->hooknum == NF_INET_LOCAL_OUT && mr->range[0].flags & IP_NAT_RANGE_MAP_IPS) - warn_if_extra_mangle(ip_hdr(skb)->daddr, + warn_if_extra_mangle(dev_net(par->out), ip_hdr(skb)->daddr, mr->range[0].min_ip); return nf_nat_setup_info(ct, &mr->range[0], IP_NAT_MANIP_DST); } -static bool ipt_snat_checkentry(const char *tablename, - const void *entry, - const struct xt_target *target, - void *targinfo, - unsigned int hook_mask) +static bool ipt_snat_checkentry(const struct xt_tgchk_param *par) { - const struct nf_nat_multi_range_compat *mr = targinfo; + const struct nf_nat_multi_range_compat *mr = par->targinfo; /* Must be a valid range */ if (mr->rangesize != 1) { @@ -153,13 +140,9 @@ static bool ipt_snat_checkentry(const char *tablename, return true; } -static bool ipt_dnat_checkentry(const char *tablename, - const void *entry, - const struct xt_target *target, - void *targinfo, - unsigned int hook_mask) +static bool ipt_dnat_checkentry(const struct xt_tgchk_param *par) { - const struct nf_nat_multi_range_compat *mr = targinfo; + const struct nf_nat_multi_range_compat *mr = par->targinfo; /* Must be a valid range */ if (mr->rangesize != 1) { @@ -194,9 +177,10 @@ int nf_nat_rule_find(struct sk_buff *skb, const struct net_device *out, struct nf_conn *ct) { + struct net *net = nf_ct_net(ct); int ret; - ret = ipt_do_table(skb, hooknum, in, out, nat_table); + ret = ipt_do_table(skb, hooknum, in, out, net->ipv4.nat_table); if (ret == NF_ACCEPT) { if (!nf_nat_initialized(ct, HOOK2MANIP(hooknum))) @@ -226,14 +210,32 @@ static struct xt_target ipt_dnat_reg __read_mostly = { .family = AF_INET, }; +static int __net_init nf_nat_rule_net_init(struct net *net) +{ + net->ipv4.nat_table = ipt_register_table(net, &nat_table, + &nat_initial_table.repl); + if (IS_ERR(net->ipv4.nat_table)) + return PTR_ERR(net->ipv4.nat_table); + return 0; +} + +static void __net_exit nf_nat_rule_net_exit(struct net *net) +{ + ipt_unregister_table(net->ipv4.nat_table); +} + +static struct pernet_operations nf_nat_rule_net_ops = { + .init = nf_nat_rule_net_init, + .exit = nf_nat_rule_net_exit, +}; + int __init nf_nat_rule_init(void) { int ret; - nat_table = ipt_register_table(&init_net, &__nat_table, - &nat_initial_table.repl); - if (IS_ERR(nat_table)) - return PTR_ERR(nat_table); + ret = register_pernet_subsys(&nf_nat_rule_net_ops); + if (ret != 0) + goto out; ret = xt_register_target(&ipt_snat_reg); if (ret != 0) goto unregister_table; @@ -247,8 +249,8 @@ int __init nf_nat_rule_init(void) unregister_snat: xt_unregister_target(&ipt_snat_reg); unregister_table: - ipt_unregister_table(nat_table); - + unregister_pernet_subsys(&nf_nat_rule_net_ops); + out: return ret; } @@ -256,5 +258,5 @@ void nf_nat_rule_cleanup(void) { xt_unregister_target(&ipt_dnat_reg); xt_unregister_target(&ipt_snat_reg); - ipt_unregister_table(nat_table); + unregister_pernet_subsys(&nf_nat_rule_net_ops); } diff --git a/net/ipv6/netfilter.c b/net/ipv6/netfilter.c index 8c6c5e71f210..4cb4844a3220 100644 --- a/net/ipv6/netfilter.c +++ b/net/ipv6/netfilter.c @@ -23,7 +23,7 @@ int ip6_route_me_harder(struct sk_buff *skb) .saddr = iph->saddr, } }, }; - dst = ip6_route_output(&init_net, skb->sk, &fl); + dst = ip6_route_output(dev_net(skb->dst->dev), skb->sk, &fl); #ifdef CONFIG_XFRM if (!(IP6CB(skb)->flags & IP6SKB_XFRM_TRANSFORMED) && diff --git a/net/ipv6/netfilter/Kconfig b/net/ipv6/netfilter/Kconfig index 0cfcce7b18d8..53ea512c4608 100644 --- a/net/ipv6/netfilter/Kconfig +++ b/net/ipv6/netfilter/Kconfig @@ -55,30 +55,29 @@ config IP6_NF_IPTABLES To compile it as a module, choose M here. If unsure, say N. +if IP6_NF_IPTABLES + # The simple matches. -config IP6_NF_MATCH_RT - tristate '"rt" Routing header match support' - depends on IP6_NF_IPTABLES +config IP6_NF_MATCH_AH + tristate '"ah" match support' depends on NETFILTER_ADVANCED help - rt matching allows you to match packets based on the routing - header of the packet. + This module allows one to match AH packets. To compile it as a module, choose M here. If unsure, say N. -config IP6_NF_MATCH_OPTS - tristate '"hopbyhop" and "dst" opts header match support' - depends on IP6_NF_IPTABLES +config IP6_NF_MATCH_EUI64 + tristate '"eui64" address check' depends on NETFILTER_ADVANCED help - This allows one to match packets based on the hop-by-hop - and destination options headers of a packet. + This module performs checking on the IPv6 source address + Compares the last 64 bits with the EUI64 (delivered + from the MAC address) address To compile it as a module, choose M here. If unsure, say N. config IP6_NF_MATCH_FRAG tristate '"frag" Fragmentation header match support' - depends on IP6_NF_IPTABLES depends on NETFILTER_ADVANCED help frag matching allows you to match packets based on the fragmentation @@ -86,9 +85,17 @@ config IP6_NF_MATCH_FRAG To compile it as a module, choose M here. If unsure, say N. +config IP6_NF_MATCH_OPTS + tristate '"hbh" hop-by-hop and "dst" opts header match support' + depends on NETFILTER_ADVANCED + help + This allows one to match packets based on the hop-by-hop + and destination options headers of a packet. + + To compile it as a module, choose M here. If unsure, say N. + config IP6_NF_MATCH_HL tristate '"hl" match support' - depends on IP6_NF_IPTABLES depends on NETFILTER_ADVANCED help HL matching allows you to match packets based on the hop @@ -98,7 +105,6 @@ config IP6_NF_MATCH_HL config IP6_NF_MATCH_IPV6HEADER tristate '"ipv6header" IPv6 Extension Headers Match' - depends on IP6_NF_IPTABLES default m if NETFILTER_ADVANCED=n help This module allows one to match packets based upon @@ -106,54 +112,40 @@ config IP6_NF_MATCH_IPV6HEADER To compile it as a module, choose M here. If unsure, say N. -config IP6_NF_MATCH_AH - tristate '"ah" match support' - depends on IP6_NF_IPTABLES - depends on NETFILTER_ADVANCED - help - This module allows one to match AH packets. - - To compile it as a module, choose M here. If unsure, say N. - config IP6_NF_MATCH_MH tristate '"mh" match support' - depends on IP6_NF_IPTABLES depends on NETFILTER_ADVANCED help This module allows one to match MH packets. To compile it as a module, choose M here. If unsure, say N. -config IP6_NF_MATCH_EUI64 - tristate '"eui64" address check' - depends on IP6_NF_IPTABLES +config IP6_NF_MATCH_RT + tristate '"rt" Routing header match support' depends on NETFILTER_ADVANCED help - This module performs checking on the IPv6 source address - Compares the last 64 bits with the EUI64 (delivered - from the MAC address) address + rt matching allows you to match packets based on the routing + header of the packet. To compile it as a module, choose M here. If unsure, say N. # The targets -config IP6_NF_FILTER - tristate "Packet filtering" - depends on IP6_NF_IPTABLES +config IP6_NF_TARGET_LOG + tristate "LOG target support" default m if NETFILTER_ADVANCED=n help - Packet filtering defines a table `filter', which has a series of - rules for simple packet filtering at local input, forwarding and - local output. See the man page for iptables(8). + This option adds a `LOG' target, which allows you to create rules in + any iptables table which records the packet header to the syslog. To compile it as a module, choose M here. If unsure, say N. -config IP6_NF_TARGET_LOG - tristate "LOG target support" - depends on IP6_NF_FILTER +config IP6_NF_FILTER + tristate "Packet filtering" default m if NETFILTER_ADVANCED=n help - This option adds a `LOG' target, which allows you to create rules in - any iptables table which records the packet header to the syslog. + Packet filtering defines a table `filter', which has a series of + rules for simple packet filtering at local input, forwarding and + local output. See the man page for iptables(8). To compile it as a module, choose M here. If unsure, say N. @@ -170,7 +162,6 @@ config IP6_NF_TARGET_REJECT config IP6_NF_MANGLE tristate "Packet mangling" - depends on IP6_NF_IPTABLES default m if NETFILTER_ADVANCED=n help This option adds a `mangle' table to iptables: see the man page for @@ -198,7 +189,6 @@ config IP6_NF_TARGET_HL config IP6_NF_RAW tristate 'raw table support (required for TRACE)' - depends on IP6_NF_IPTABLES depends on NETFILTER_ADVANCED help This option adds a `raw' table to ip6tables. This table is the very @@ -211,7 +201,6 @@ config IP6_NF_RAW # security table for MAC policy config IP6_NF_SECURITY tristate "Security table" - depends on IP6_NF_IPTABLES depends on SECURITY depends on NETFILTER_ADVANCED help @@ -220,5 +209,7 @@ config IP6_NF_SECURITY If unsure, say N. +endif # IP6_NF_IPTABLES + endmenu diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c index 0b4557e03431..a33485dc81cb 100644 --- a/net/ipv6/netfilter/ip6_tables.c +++ b/net/ipv6/netfilter/ip6_tables.c @@ -200,32 +200,25 @@ ip6_checkentry(const struct ip6t_ip6 *ipv6) } static unsigned int -ip6t_error(struct sk_buff *skb, - const struct net_device *in, - const struct net_device *out, - unsigned int hooknum, - const struct xt_target *target, - const void *targinfo) +ip6t_error(struct sk_buff *skb, const struct xt_target_param *par) { if (net_ratelimit()) - printk("ip6_tables: error: `%s'\n", (char *)targinfo); + printk("ip6_tables: error: `%s'\n", + (const char *)par->targinfo); return NF_DROP; } /* Performance critical - called for every packet */ static inline bool -do_match(struct ip6t_entry_match *m, - const struct sk_buff *skb, - const struct net_device *in, - const struct net_device *out, - int offset, - unsigned int protoff, - bool *hotdrop) +do_match(struct ip6t_entry_match *m, const struct sk_buff *skb, + struct xt_match_param *par) { + par->match = m->u.kernel.match; + par->matchinfo = m->data; + /* Stop iteration if it doesn't match */ - if (!m->u.kernel.match->match(skb, in, out, m->u.kernel.match, m->data, - offset, protoff, hotdrop)) + if (!m->u.kernel.match->match(skb, par)) return true; else return false; @@ -355,8 +348,6 @@ ip6t_do_table(struct sk_buff *skb, struct xt_table *table) { static const char nulldevname[IFNAMSIZ] __attribute__((aligned(sizeof(long)))); - int offset = 0; - unsigned int protoff = 0; bool hotdrop = false; /* Initializing verdict to NF_DROP keeps gcc happy. */ unsigned int verdict = NF_DROP; @@ -364,6 +355,8 @@ ip6t_do_table(struct sk_buff *skb, void *table_base; struct ip6t_entry *e, *back; struct xt_table_info *private; + struct xt_match_param mtpar; + struct xt_target_param tgpar; /* Initialization */ indev = in ? in->name : nulldevname; @@ -374,6 +367,11 @@ ip6t_do_table(struct sk_buff *skb, * things we don't know, ie. tcp syn flag or ports). If the * rule is also a fragment-specific rule, non-fragments won't * match it. */ + mtpar.hotdrop = &hotdrop; + mtpar.in = tgpar.in = in; + mtpar.out = tgpar.out = out; + mtpar.family = tgpar.family = NFPROTO_IPV6; + tgpar.hooknum = hook; read_lock_bh(&table->lock); IP_NF_ASSERT(table->valid_hooks & (1 << hook)); @@ -388,12 +386,10 @@ ip6t_do_table(struct sk_buff *skb, IP_NF_ASSERT(e); IP_NF_ASSERT(back); if (ip6_packet_match(skb, indev, outdev, &e->ipv6, - &protoff, &offset, &hotdrop)) { + &mtpar.thoff, &mtpar.fragoff, &hotdrop)) { struct ip6t_entry_target *t; - if (IP6T_MATCH_ITERATE(e, do_match, - skb, in, out, - offset, protoff, &hotdrop) != 0) + if (IP6T_MATCH_ITERATE(e, do_match, skb, &mtpar) != 0) goto no_match; ADD_COUNTER(e->counters, @@ -441,15 +437,15 @@ ip6t_do_table(struct sk_buff *skb, } else { /* Targets which reenter must return abs. verdicts */ + tgpar.target = t->u.kernel.target; + tgpar.targinfo = t->data; + #ifdef CONFIG_NETFILTER_DEBUG ((struct ip6t_entry *)table_base)->comefrom = 0xeeeeeeec; #endif verdict = t->u.kernel.target->target(skb, - in, out, - hook, - t->u.kernel.target, - t->data); + &tgpar); #ifdef CONFIG_NETFILTER_DEBUG if (((struct ip6t_entry *)table_base)->comefrom @@ -602,12 +598,17 @@ mark_source_chains(struct xt_table_info *newinfo, static int cleanup_match(struct ip6t_entry_match *m, unsigned int *i) { + struct xt_mtdtor_param par; + if (i && (*i)-- == 0) return 1; - if (m->u.kernel.match->destroy) - m->u.kernel.match->destroy(m->u.kernel.match, m->data); - module_put(m->u.kernel.match->me); + par.match = m->u.kernel.match; + par.matchinfo = m->data; + par.family = NFPROTO_IPV6; + if (par.match->destroy != NULL) + par.match->destroy(&par); + module_put(par.match->me); return 0; } @@ -632,34 +633,28 @@ check_entry(struct ip6t_entry *e, const char *name) return 0; } -static int check_match(struct ip6t_entry_match *m, const char *name, - const struct ip6t_ip6 *ipv6, - unsigned int hookmask, unsigned int *i) +static int check_match(struct ip6t_entry_match *m, struct xt_mtchk_param *par, + unsigned int *i) { - struct xt_match *match; + const struct ip6t_ip6 *ipv6 = par->entryinfo; int ret; - match = m->u.kernel.match; - ret = xt_check_match(match, AF_INET6, m->u.match_size - sizeof(*m), - name, hookmask, ipv6->proto, - ipv6->invflags & IP6T_INV_PROTO); - if (!ret && m->u.kernel.match->checkentry - && !m->u.kernel.match->checkentry(name, ipv6, match, m->data, - hookmask)) { + par->match = m->u.kernel.match; + par->matchinfo = m->data; + + ret = xt_check_match(par, m->u.match_size - sizeof(*m), + ipv6->proto, ipv6->invflags & IP6T_INV_PROTO); + if (ret < 0) { duprintf("ip_tables: check failed for `%s'.\n", - m->u.kernel.match->name); - ret = -EINVAL; + par.match->name); + return ret; } - if (!ret) - (*i)++; - return ret; + ++*i; + return 0; } static int -find_check_match(struct ip6t_entry_match *m, - const char *name, - const struct ip6t_ip6 *ipv6, - unsigned int hookmask, +find_check_match(struct ip6t_entry_match *m, struct xt_mtchk_param *par, unsigned int *i) { struct xt_match *match; @@ -674,7 +669,7 @@ find_check_match(struct ip6t_entry_match *m, } m->u.kernel.match = match; - ret = check_match(m, name, ipv6, hookmask, i); + ret = check_match(m, par, i); if (ret) goto err; @@ -686,23 +681,26 @@ err: static int check_target(struct ip6t_entry *e, const char *name) { - struct ip6t_entry_target *t; - struct xt_target *target; + struct ip6t_entry_target *t = ip6t_get_target(e); + struct xt_tgchk_param par = { + .table = name, + .entryinfo = e, + .target = t->u.kernel.target, + .targinfo = t->data, + .hook_mask = e->comefrom, + .family = NFPROTO_IPV6, + }; int ret; t = ip6t_get_target(e); - target = t->u.kernel.target; - ret = xt_check_target(target, AF_INET6, t->u.target_size - sizeof(*t), - name, e->comefrom, e->ipv6.proto, - e->ipv6.invflags & IP6T_INV_PROTO); - if (!ret && t->u.kernel.target->checkentry - && !t->u.kernel.target->checkentry(name, e, target, t->data, - e->comefrom)) { + ret = xt_check_target(&par, t->u.target_size - sizeof(*t), + e->ipv6.proto, e->ipv6.invflags & IP6T_INV_PROTO); + if (ret < 0) { duprintf("ip_tables: check failed for `%s'.\n", t->u.kernel.target->name); - ret = -EINVAL; + return ret; } - return ret; + return 0; } static int @@ -713,14 +711,18 @@ find_check_entry(struct ip6t_entry *e, const char *name, unsigned int size, struct xt_target *target; int ret; unsigned int j; + struct xt_mtchk_param mtpar; ret = check_entry(e, name); if (ret) return ret; j = 0; - ret = IP6T_MATCH_ITERATE(e, find_check_match, name, &e->ipv6, - e->comefrom, &j); + mtpar.table = name; + mtpar.entryinfo = &e->ipv6; + mtpar.hook_mask = e->comefrom; + mtpar.family = NFPROTO_IPV6; + ret = IP6T_MATCH_ITERATE(e, find_check_match, &mtpar, &j); if (ret != 0) goto cleanup_matches; @@ -795,6 +797,7 @@ check_entry_size_and_hooks(struct ip6t_entry *e, static int cleanup_entry(struct ip6t_entry *e, unsigned int *i) { + struct xt_tgdtor_param par; struct ip6t_entry_target *t; if (i && (*i)-- == 0) @@ -803,9 +806,13 @@ cleanup_entry(struct ip6t_entry *e, unsigned int *i) /* Cleanup all matches */ IP6T_MATCH_ITERATE(e, cleanup_match, NULL); t = ip6t_get_target(e); - if (t->u.kernel.target->destroy) - t->u.kernel.target->destroy(t->u.kernel.target, t->data); - module_put(t->u.kernel.target->me); + + par.target = t->u.kernel.target; + par.targinfo = t->data; + par.family = NFPROTO_IPV6; + if (par.target->destroy != NULL) + par.target->destroy(&par); + module_put(par.target->me); return 0; } @@ -1677,10 +1684,14 @@ static int compat_check_entry(struct ip6t_entry *e, const char *name, { unsigned int j; int ret; + struct xt_mtchk_param mtpar; j = 0; - ret = IP6T_MATCH_ITERATE(e, check_match, name, &e->ipv6, - e->comefrom, &j); + mtpar.table = name; + mtpar.entryinfo = &e->ipv6; + mtpar.hook_mask = e->comefrom; + mtpar.family = NFPROTO_IPV6; + ret = IP6T_MATCH_ITERATE(e, check_match, &mtpar, &j); if (ret) goto cleanup_matches; @@ -2146,30 +2157,23 @@ icmp6_type_code_match(u_int8_t test_type, u_int8_t min_code, u_int8_t max_code, } static bool -icmp6_match(const struct sk_buff *skb, - const struct net_device *in, - const struct net_device *out, - const struct xt_match *match, - const void *matchinfo, - int offset, - unsigned int protoff, - bool *hotdrop) +icmp6_match(const struct sk_buff *skb, const struct xt_match_param *par) { const struct icmp6hdr *ic; struct icmp6hdr _icmph; - const struct ip6t_icmp *icmpinfo = matchinfo; + const struct ip6t_icmp *icmpinfo = par->matchinfo; /* Must not be a fragment. */ - if (offset) + if (par->fragoff != 0) return false; - ic = skb_header_pointer(skb, protoff, sizeof(_icmph), &_icmph); + ic = skb_header_pointer(skb, par->thoff, sizeof(_icmph), &_icmph); if (ic == NULL) { /* We've been asked to examine this packet, and we * can't. Hence, no choice but to drop. */ duprintf("Dropping evil ICMP tinygram.\n"); - *hotdrop = true; + *par->hotdrop = true; return false; } @@ -2181,14 +2185,9 @@ icmp6_match(const struct sk_buff *skb, } /* Called when user tries to insert an entry of this type. */ -static bool -icmp6_checkentry(const char *tablename, - const void *entry, - const struct xt_match *match, - void *matchinfo, - unsigned int hook_mask) +static bool icmp6_checkentry(const struct xt_mtchk_param *par) { - const struct ip6t_icmp *icmpinfo = matchinfo; + const struct ip6t_icmp *icmpinfo = par->matchinfo; /* Must specify no unknown invflags */ return !(icmpinfo->invflags & ~IP6T_ICMP_INV); diff --git a/net/ipv6/netfilter/ip6t_HL.c b/net/ipv6/netfilter/ip6t_HL.c index d5f8fd5f29d3..27b5adf670a2 100644 --- a/net/ipv6/netfilter/ip6t_HL.c +++ b/net/ipv6/netfilter/ip6t_HL.c @@ -19,12 +19,10 @@ MODULE_DESCRIPTION("Xtables: IPv6 Hop Limit field modification target"); MODULE_LICENSE("GPL"); static unsigned int -hl_tg6(struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, unsigned int hooknum, - const struct xt_target *target, const void *targinfo) +hl_tg6(struct sk_buff *skb, const struct xt_target_param *par) { struct ipv6hdr *ip6h; - const struct ip6t_HL_info *info = targinfo; + const struct ip6t_HL_info *info = par->targinfo; int new_hl; if (!skb_make_writable(skb, skb->len)) @@ -56,12 +54,9 @@ hl_tg6(struct sk_buff *skb, const struct net_device *in, return XT_CONTINUE; } -static bool -hl_tg6_check(const char *tablename, const void *entry, - const struct xt_target *target, void *targinfo, - unsigned int hook_mask) +static bool hl_tg6_check(const struct xt_tgchk_param *par) { - const struct ip6t_HL_info *info = targinfo; + const struct ip6t_HL_info *info = par->targinfo; if (info->mode > IP6T_HL_MAXMODE) { printk(KERN_WARNING "ip6t_HL: invalid or unknown Mode %u\n", @@ -78,7 +73,7 @@ hl_tg6_check(const char *tablename, const void *entry, static struct xt_target hl_tg6_reg __read_mostly = { .name = "HL", - .family = AF_INET6, + .family = NFPROTO_IPV6, .target = hl_tg6, .targetsize = sizeof(struct ip6t_HL_info), .table = "mangle", diff --git a/net/ipv6/netfilter/ip6t_LOG.c b/net/ipv6/netfilter/ip6t_LOG.c index 3a2316974f83..caa441d09567 100644 --- a/net/ipv6/netfilter/ip6t_LOG.c +++ b/net/ipv6/netfilter/ip6t_LOG.c @@ -385,7 +385,7 @@ static struct nf_loginfo default_loginfo = { }; static void -ip6t_log_packet(unsigned int pf, +ip6t_log_packet(u_int8_t pf, unsigned int hooknum, const struct sk_buff *skb, const struct net_device *in, @@ -438,28 +438,24 @@ ip6t_log_packet(unsigned int pf, } static unsigned int -log_tg6(struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, unsigned int hooknum, - const struct xt_target *target, const void *targinfo) +log_tg6(struct sk_buff *skb, const struct xt_target_param *par) { - const struct ip6t_log_info *loginfo = targinfo; + const struct ip6t_log_info *loginfo = par->targinfo; struct nf_loginfo li; li.type = NF_LOG_TYPE_LOG; li.u.log.level = loginfo->level; li.u.log.logflags = loginfo->logflags; - ip6t_log_packet(PF_INET6, hooknum, skb, in, out, &li, loginfo->prefix); + ip6t_log_packet(NFPROTO_IPV6, par->hooknum, skb, par->in, par->out, + &li, loginfo->prefix); return XT_CONTINUE; } -static bool -log_tg6_check(const char *tablename, const void *entry, - const struct xt_target *target, void *targinfo, - unsigned int hook_mask) +static bool log_tg6_check(const struct xt_tgchk_param *par) { - const struct ip6t_log_info *loginfo = targinfo; + const struct ip6t_log_info *loginfo = par->targinfo; if (loginfo->level >= 8) { pr_debug("LOG: level %u >= 8\n", loginfo->level); @@ -475,7 +471,7 @@ log_tg6_check(const char *tablename, const void *entry, static struct xt_target log_tg6_reg __read_mostly = { .name = "LOG", - .family = AF_INET6, + .family = NFPROTO_IPV6, .target = log_tg6, .targetsize = sizeof(struct ip6t_log_info), .checkentry = log_tg6_check, @@ -495,7 +491,7 @@ static int __init log_tg6_init(void) ret = xt_register_target(&log_tg6_reg); if (ret < 0) return ret; - nf_log_register(PF_INET6, &ip6t_logger); + nf_log_register(NFPROTO_IPV6, &ip6t_logger); return 0; } diff --git a/net/ipv6/netfilter/ip6t_REJECT.c b/net/ipv6/netfilter/ip6t_REJECT.c index 44c8d65a2431..0981b4ccb8b1 100644 --- a/net/ipv6/netfilter/ip6t_REJECT.c +++ b/net/ipv6/netfilter/ip6t_REJECT.c @@ -35,7 +35,7 @@ MODULE_DESCRIPTION("Xtables: packet \"rejection\" target for IPv6"); MODULE_LICENSE("GPL"); /* Send RST reply */ -static void send_reset(struct sk_buff *oldskb) +static void send_reset(struct net *net, struct sk_buff *oldskb) { struct sk_buff *nskb; struct tcphdr otcph, *tcph; @@ -94,7 +94,7 @@ static void send_reset(struct sk_buff *oldskb) fl.fl_ip_sport = otcph.dest; fl.fl_ip_dport = otcph.source; security_skb_classify_flow(oldskb, &fl); - dst = ip6_route_output(&init_net, NULL, &fl); + dst = ip6_route_output(net, NULL, &fl); if (dst == NULL) return; if (dst->error || xfrm_lookup(&dst, &fl, NULL, 0)) @@ -163,20 +163,20 @@ static void send_reset(struct sk_buff *oldskb) } static inline void -send_unreach(struct sk_buff *skb_in, unsigned char code, unsigned int hooknum) +send_unreach(struct net *net, struct sk_buff *skb_in, unsigned char code, + unsigned int hooknum) { if (hooknum == NF_INET_LOCAL_OUT && skb_in->dev == NULL) - skb_in->dev = init_net.loopback_dev; + skb_in->dev = net->loopback_dev; icmpv6_send(skb_in, ICMPV6_DEST_UNREACH, code, 0, NULL); } static unsigned int -reject_tg6(struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, unsigned int hooknum, - const struct xt_target *target, const void *targinfo) +reject_tg6(struct sk_buff *skb, const struct xt_target_param *par) { - const struct ip6t_reject_info *reject = targinfo; + const struct ip6t_reject_info *reject = par->targinfo; + struct net *net = dev_net((par->in != NULL) ? par->in : par->out); pr_debug("%s: medium point\n", __func__); /* WARNING: This code causes reentry within ip6tables. @@ -184,25 +184,25 @@ reject_tg6(struct sk_buff *skb, const struct net_device *in, must return an absolute verdict. --RR */ switch (reject->with) { case IP6T_ICMP6_NO_ROUTE: - send_unreach(skb, ICMPV6_NOROUTE, hooknum); + send_unreach(net, skb, ICMPV6_NOROUTE, par->hooknum); break; case IP6T_ICMP6_ADM_PROHIBITED: - send_unreach(skb, ICMPV6_ADM_PROHIBITED, hooknum); + send_unreach(net, skb, ICMPV6_ADM_PROHIBITED, par->hooknum); break; case IP6T_ICMP6_NOT_NEIGHBOUR: - send_unreach(skb, ICMPV6_NOT_NEIGHBOUR, hooknum); + send_unreach(net, skb, ICMPV6_NOT_NEIGHBOUR, par->hooknum); break; case IP6T_ICMP6_ADDR_UNREACH: - send_unreach(skb, ICMPV6_ADDR_UNREACH, hooknum); + send_unreach(net, skb, ICMPV6_ADDR_UNREACH, par->hooknum); break; case IP6T_ICMP6_PORT_UNREACH: - send_unreach(skb, ICMPV6_PORT_UNREACH, hooknum); + send_unreach(net, skb, ICMPV6_PORT_UNREACH, par->hooknum); break; case IP6T_ICMP6_ECHOREPLY: /* Do nothing */ break; case IP6T_TCP_RESET: - send_reset(skb); + send_reset(net, skb); break; default: if (net_ratelimit()) @@ -213,13 +213,10 @@ reject_tg6(struct sk_buff *skb, const struct net_device *in, return NF_DROP; } -static bool -reject_tg6_check(const char *tablename, const void *entry, - const struct xt_target *target, void *targinfo, - unsigned int hook_mask) +static bool reject_tg6_check(const struct xt_tgchk_param *par) { - const struct ip6t_reject_info *rejinfo = targinfo; - const struct ip6t_entry *e = entry; + const struct ip6t_reject_info *rejinfo = par->targinfo; + const struct ip6t_entry *e = par->entryinfo; if (rejinfo->with == IP6T_ICMP6_ECHOREPLY) { printk("ip6t_REJECT: ECHOREPLY is not supported.\n"); @@ -237,7 +234,7 @@ reject_tg6_check(const char *tablename, const void *entry, static struct xt_target reject_tg6_reg __read_mostly = { .name = "REJECT", - .family = AF_INET6, + .family = NFPROTO_IPV6, .target = reject_tg6, .targetsize = sizeof(struct ip6t_reject_info), .table = "filter", diff --git a/net/ipv6/netfilter/ip6t_ah.c b/net/ipv6/netfilter/ip6t_ah.c index 429629fd63b6..3a82f24746b9 100644 --- a/net/ipv6/netfilter/ip6t_ah.c +++ b/net/ipv6/netfilter/ip6t_ah.c @@ -36,14 +36,11 @@ spi_match(u_int32_t min, u_int32_t max, u_int32_t spi, bool invert) return r; } -static bool -ah_mt6(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, bool *hotdrop) +static bool ah_mt6(const struct sk_buff *skb, const struct xt_match_param *par) { struct ip_auth_hdr _ah; const struct ip_auth_hdr *ah; - const struct ip6t_ah *ahinfo = matchinfo; + const struct ip6t_ah *ahinfo = par->matchinfo; unsigned int ptr; unsigned int hdrlen = 0; int err; @@ -51,13 +48,13 @@ ah_mt6(const struct sk_buff *skb, const struct net_device *in, err = ipv6_find_hdr(skb, &ptr, NEXTHDR_AUTH, NULL); if (err < 0) { if (err != -ENOENT) - *hotdrop = true; + *par->hotdrop = true; return false; } ah = skb_header_pointer(skb, ptr, sizeof(_ah), &_ah); if (ah == NULL) { - *hotdrop = true; + *par->hotdrop = true; return false; } @@ -93,13 +90,9 @@ ah_mt6(const struct sk_buff *skb, const struct net_device *in, !(ahinfo->hdrres && ah->reserved); } -/* Called when user tries to insert an entry of this type. */ -static bool -ah_mt6_check(const char *tablename, const void *entry, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +static bool ah_mt6_check(const struct xt_mtchk_param *par) { - const struct ip6t_ah *ahinfo = matchinfo; + const struct ip6t_ah *ahinfo = par->matchinfo; if (ahinfo->invflags & ~IP6T_AH_INV_MASK) { pr_debug("ip6t_ah: unknown flags %X\n", ahinfo->invflags); @@ -110,7 +103,7 @@ ah_mt6_check(const char *tablename, const void *entry, static struct xt_match ah_mt6_reg __read_mostly = { .name = "ah", - .family = AF_INET6, + .family = NFPROTO_IPV6, .match = ah_mt6, .matchsize = sizeof(struct ip6t_ah), .checkentry = ah_mt6_check, diff --git a/net/ipv6/netfilter/ip6t_eui64.c b/net/ipv6/netfilter/ip6t_eui64.c index 8f331f12b2ec..db610bacbcce 100644 --- a/net/ipv6/netfilter/ip6t_eui64.c +++ b/net/ipv6/netfilter/ip6t_eui64.c @@ -20,18 +20,15 @@ MODULE_LICENSE("GPL"); MODULE_AUTHOR("Andras Kis-Szabo <kisza@sch.bme.hu>"); static bool -eui64_mt6(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, - bool *hotdrop) +eui64_mt6(const struct sk_buff *skb, const struct xt_match_param *par) { unsigned char eui64[8]; int i = 0; if (!(skb_mac_header(skb) >= skb->head && skb_mac_header(skb) + ETH_HLEN <= skb->data) && - offset != 0) { - *hotdrop = true; + par->fragoff != 0) { + *par->hotdrop = true; return false; } @@ -60,7 +57,7 @@ eui64_mt6(const struct sk_buff *skb, const struct net_device *in, static struct xt_match eui64_mt6_reg __read_mostly = { .name = "eui64", - .family = AF_INET6, + .family = NFPROTO_IPV6, .match = eui64_mt6, .matchsize = sizeof(int), .hooks = (1 << NF_INET_PRE_ROUTING) | (1 << NF_INET_LOCAL_IN) | diff --git a/net/ipv6/netfilter/ip6t_frag.c b/net/ipv6/netfilter/ip6t_frag.c index e2bbc63dba5b..673aa0a5084e 100644 --- a/net/ipv6/netfilter/ip6t_frag.c +++ b/net/ipv6/netfilter/ip6t_frag.c @@ -35,27 +35,24 @@ id_match(u_int32_t min, u_int32_t max, u_int32_t id, bool invert) } static bool -frag_mt6(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, - bool *hotdrop) +frag_mt6(const struct sk_buff *skb, const struct xt_match_param *par) { struct frag_hdr _frag; const struct frag_hdr *fh; - const struct ip6t_frag *fraginfo = matchinfo; + const struct ip6t_frag *fraginfo = par->matchinfo; unsigned int ptr; int err; err = ipv6_find_hdr(skb, &ptr, NEXTHDR_FRAGMENT, NULL); if (err < 0) { if (err != -ENOENT) - *hotdrop = true; + *par->hotdrop = true; return false; } fh = skb_header_pointer(skb, ptr, sizeof(_frag), &_frag); if (fh == NULL) { - *hotdrop = true; + *par->hotdrop = true; return false; } @@ -110,13 +107,9 @@ frag_mt6(const struct sk_buff *skb, const struct net_device *in, && (ntohs(fh->frag_off) & IP6_MF)); } -/* Called when user tries to insert an entry of this type. */ -static bool -frag_mt6_check(const char *tablename, const void *ip, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +static bool frag_mt6_check(const struct xt_mtchk_param *par) { - const struct ip6t_frag *fraginfo = matchinfo; + const struct ip6t_frag *fraginfo = par->matchinfo; if (fraginfo->invflags & ~IP6T_FRAG_INV_MASK) { pr_debug("ip6t_frag: unknown flags %X\n", fraginfo->invflags); @@ -127,7 +120,7 @@ frag_mt6_check(const char *tablename, const void *ip, static struct xt_match frag_mt6_reg __read_mostly = { .name = "frag", - .family = AF_INET6, + .family = NFPROTO_IPV6, .match = frag_mt6, .matchsize = sizeof(struct ip6t_frag), .checkentry = frag_mt6_check, diff --git a/net/ipv6/netfilter/ip6t_hbh.c b/net/ipv6/netfilter/ip6t_hbh.c index 26654b26d7fa..cbe8dec9744b 100644 --- a/net/ipv6/netfilter/ip6t_hbh.c +++ b/net/ipv6/netfilter/ip6t_hbh.c @@ -42,14 +42,11 @@ MODULE_ALIAS("ip6t_dst"); */ static bool -hbh_mt6(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, - bool *hotdrop) +hbh_mt6(const struct sk_buff *skb, const struct xt_match_param *par) { struct ipv6_opt_hdr _optsh; const struct ipv6_opt_hdr *oh; - const struct ip6t_opts *optinfo = matchinfo; + const struct ip6t_opts *optinfo = par->matchinfo; unsigned int temp; unsigned int ptr; unsigned int hdrlen = 0; @@ -61,16 +58,16 @@ hbh_mt6(const struct sk_buff *skb, const struct net_device *in, unsigned int optlen; int err; - err = ipv6_find_hdr(skb, &ptr, match->data, NULL); + err = ipv6_find_hdr(skb, &ptr, par->match->data, NULL); if (err < 0) { if (err != -ENOENT) - *hotdrop = true; + *par->hotdrop = true; return false; } oh = skb_header_pointer(skb, ptr, sizeof(_optsh), &_optsh); if (oh == NULL) { - *hotdrop = true; + *par->hotdrop = true; return false; } @@ -163,13 +160,9 @@ hbh_mt6(const struct sk_buff *skb, const struct net_device *in, return false; } -/* Called when user tries to insert an entry of this type. */ -static bool -hbh_mt6_check(const char *tablename, const void *entry, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +static bool hbh_mt6_check(const struct xt_mtchk_param *par) { - const struct ip6t_opts *optsinfo = matchinfo; + const struct ip6t_opts *optsinfo = par->matchinfo; if (optsinfo->invflags & ~IP6T_OPTS_INV_MASK) { pr_debug("ip6t_opts: unknown flags %X\n", optsinfo->invflags); @@ -187,7 +180,7 @@ hbh_mt6_check(const char *tablename, const void *entry, static struct xt_match hbh_mt6_reg[] __read_mostly = { { .name = "hbh", - .family = AF_INET6, + .family = NFPROTO_IPV6, .match = hbh_mt6, .matchsize = sizeof(struct ip6t_opts), .checkentry = hbh_mt6_check, @@ -196,7 +189,7 @@ static struct xt_match hbh_mt6_reg[] __read_mostly = { }, { .name = "dst", - .family = AF_INET6, + .family = NFPROTO_IPV6, .match = hbh_mt6, .matchsize = sizeof(struct ip6t_opts), .checkentry = hbh_mt6_check, diff --git a/net/ipv6/netfilter/ip6t_hl.c b/net/ipv6/netfilter/ip6t_hl.c index 345671673845..c964dca1132d 100644 --- a/net/ipv6/netfilter/ip6t_hl.c +++ b/net/ipv6/netfilter/ip6t_hl.c @@ -19,12 +19,9 @@ MODULE_AUTHOR("Maciej Soltysiak <solt@dns.toxicfilms.tv>"); MODULE_DESCRIPTION("Xtables: IPv6 Hop Limit field match"); MODULE_LICENSE("GPL"); -static bool -hl_mt6(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, bool *hotdrop) +static bool hl_mt6(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct ip6t_hl_info *info = matchinfo; + const struct ip6t_hl_info *info = par->matchinfo; const struct ipv6hdr *ip6h = ipv6_hdr(skb); switch (info->mode) { @@ -51,7 +48,7 @@ hl_mt6(const struct sk_buff *skb, const struct net_device *in, static struct xt_match hl_mt6_reg __read_mostly = { .name = "hl", - .family = AF_INET6, + .family = NFPROTO_IPV6, .match = hl_mt6, .matchsize = sizeof(struct ip6t_hl_info), .me = THIS_MODULE, diff --git a/net/ipv6/netfilter/ip6t_ipv6header.c b/net/ipv6/netfilter/ip6t_ipv6header.c index 317a8960a757..14e6724d5672 100644 --- a/net/ipv6/netfilter/ip6t_ipv6header.c +++ b/net/ipv6/netfilter/ip6t_ipv6header.c @@ -27,12 +27,9 @@ MODULE_DESCRIPTION("Xtables: IPv6 header types match"); MODULE_AUTHOR("Andras Kis-Szabo <kisza@sch.bme.hu>"); static bool -ipv6header_mt6(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, - bool *hotdrop) +ipv6header_mt6(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct ip6t_ipv6header_info *info = matchinfo; + const struct ip6t_ipv6header_info *info = par->matchinfo; unsigned int temp; int len; u8 nexthdr; @@ -121,12 +118,9 @@ ipv6header_mt6(const struct sk_buff *skb, const struct net_device *in, } } -static bool -ipv6header_mt6_check(const char *tablename, const void *ip, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +static bool ipv6header_mt6_check(const struct xt_mtchk_param *par) { - const struct ip6t_ipv6header_info *info = matchinfo; + const struct ip6t_ipv6header_info *info = par->matchinfo; /* invflags is 0 or 0xff in hard mode */ if ((!info->modeflag) && info->invflags != 0x00 && @@ -138,7 +132,7 @@ ipv6header_mt6_check(const char *tablename, const void *ip, static struct xt_match ipv6header_mt6_reg __read_mostly = { .name = "ipv6header", - .family = AF_INET6, + .family = NFPROTO_IPV6, .match = ipv6header_mt6, .matchsize = sizeof(struct ip6t_ipv6header_info), .checkentry = ipv6header_mt6_check, diff --git a/net/ipv6/netfilter/ip6t_mh.c b/net/ipv6/netfilter/ip6t_mh.c index e06678d07ec8..aafe4e66577b 100644 --- a/net/ipv6/netfilter/ip6t_mh.c +++ b/net/ipv6/netfilter/ip6t_mh.c @@ -37,32 +37,29 @@ type_match(u_int8_t min, u_int8_t max, u_int8_t type, bool invert) return (type >= min && type <= max) ^ invert; } -static bool -mh_mt6(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, bool *hotdrop) +static bool mh_mt6(const struct sk_buff *skb, const struct xt_match_param *par) { struct ip6_mh _mh; const struct ip6_mh *mh; - const struct ip6t_mh *mhinfo = matchinfo; + const struct ip6t_mh *mhinfo = par->matchinfo; /* Must not be a fragment. */ - if (offset) + if (par->fragoff != 0) return false; - mh = skb_header_pointer(skb, protoff, sizeof(_mh), &_mh); + mh = skb_header_pointer(skb, par->thoff, sizeof(_mh), &_mh); if (mh == NULL) { /* We've been asked to examine this packet, and we can't. Hence, no choice but to drop. */ duprintf("Dropping evil MH tinygram.\n"); - *hotdrop = true; + *par->hotdrop = true; return false; } if (mh->ip6mh_proto != IPPROTO_NONE) { duprintf("Dropping invalid MH Payload Proto: %u\n", mh->ip6mh_proto); - *hotdrop = true; + *par->hotdrop = true; return false; } @@ -70,13 +67,9 @@ mh_mt6(const struct sk_buff *skb, const struct net_device *in, !!(mhinfo->invflags & IP6T_MH_INV_TYPE)); } -/* Called when user tries to insert an entry of this type. */ -static bool -mh_mt6_check(const char *tablename, const void *entry, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +static bool mh_mt6_check(const struct xt_mtchk_param *par) { - const struct ip6t_mh *mhinfo = matchinfo; + const struct ip6t_mh *mhinfo = par->matchinfo; /* Must specify no unknown invflags */ return !(mhinfo->invflags & ~IP6T_MH_INV_MASK); @@ -84,7 +77,7 @@ mh_mt6_check(const char *tablename, const void *entry, static struct xt_match mh_mt6_reg __read_mostly = { .name = "mh", - .family = AF_INET6, + .family = NFPROTO_IPV6, .checkentry = mh_mt6_check, .match = mh_mt6, .matchsize = sizeof(struct ip6t_mh), diff --git a/net/ipv6/netfilter/ip6t_rt.c b/net/ipv6/netfilter/ip6t_rt.c index 81aaf7aaaabf..356b8d6f6baa 100644 --- a/net/ipv6/netfilter/ip6t_rt.c +++ b/net/ipv6/netfilter/ip6t_rt.c @@ -36,14 +36,11 @@ segsleft_match(u_int32_t min, u_int32_t max, u_int32_t id, bool invert) return r; } -static bool -rt_mt6(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, bool *hotdrop) +static bool rt_mt6(const struct sk_buff *skb, const struct xt_match_param *par) { struct ipv6_rt_hdr _route; const struct ipv6_rt_hdr *rh; - const struct ip6t_rt *rtinfo = matchinfo; + const struct ip6t_rt *rtinfo = par->matchinfo; unsigned int temp; unsigned int ptr; unsigned int hdrlen = 0; @@ -55,13 +52,13 @@ rt_mt6(const struct sk_buff *skb, const struct net_device *in, err = ipv6_find_hdr(skb, &ptr, NEXTHDR_ROUTING, NULL); if (err < 0) { if (err != -ENOENT) - *hotdrop = true; + *par->hotdrop = true; return false; } rh = skb_header_pointer(skb, ptr, sizeof(_route), &_route); if (rh == NULL) { - *hotdrop = true; + *par->hotdrop = true; return false; } @@ -189,13 +186,9 @@ rt_mt6(const struct sk_buff *skb, const struct net_device *in, return false; } -/* Called when user tries to insert an entry of this type. */ -static bool -rt_mt6_check(const char *tablename, const void *entry, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +static bool rt_mt6_check(const struct xt_mtchk_param *par) { - const struct ip6t_rt *rtinfo = matchinfo; + const struct ip6t_rt *rtinfo = par->matchinfo; if (rtinfo->invflags & ~IP6T_RT_INV_MASK) { pr_debug("ip6t_rt: unknown flags %X\n", rtinfo->invflags); @@ -214,7 +207,7 @@ rt_mt6_check(const char *tablename, const void *entry, static struct xt_match rt_mt6_reg __read_mostly = { .name = "rt", - .family = AF_INET6, + .family = NFPROTO_IPV6, .match = rt_mt6, .matchsize = sizeof(struct ip6t_rt), .checkentry = rt_mt6_check, diff --git a/net/ipv6/netfilter/ip6table_filter.c b/net/ipv6/netfilter/ip6table_filter.c index 55a2c290bad4..b110a8a85a14 100644 --- a/net/ipv6/netfilter/ip6table_filter.c +++ b/net/ipv6/netfilter/ip6table_filter.c @@ -68,7 +68,7 @@ ip6t_local_in_hook(unsigned int hook, int (*okfn)(struct sk_buff *)) { return ip6t_do_table(skb, hook, in, out, - nf_local_in_net(in, out)->ipv6.ip6table_filter); + dev_net(in)->ipv6.ip6table_filter); } static unsigned int @@ -79,7 +79,7 @@ ip6t_forward_hook(unsigned int hook, int (*okfn)(struct sk_buff *)) { return ip6t_do_table(skb, hook, in, out, - nf_forward_net(in, out)->ipv6.ip6table_filter); + dev_net(in)->ipv6.ip6table_filter); } static unsigned int @@ -100,7 +100,7 @@ ip6t_local_out_hook(unsigned int hook, #endif return ip6t_do_table(skb, hook, in, out, - nf_local_out_net(in, out)->ipv6.ip6table_filter); + dev_net(out)->ipv6.ip6table_filter); } static struct nf_hook_ops ip6t_ops[] __read_mostly = { diff --git a/net/ipv6/netfilter/ip6table_mangle.c b/net/ipv6/netfilter/ip6table_mangle.c index f405cea21a8b..d0b31b259d4d 100644 --- a/net/ipv6/netfilter/ip6table_mangle.c +++ b/net/ipv6/netfilter/ip6table_mangle.c @@ -67,17 +67,29 @@ static struct xt_table packet_mangler = { /* The work comes in here from netfilter.c. */ static unsigned int -ip6t_route_hook(unsigned int hook, +ip6t_in_hook(unsigned int hook, struct sk_buff *skb, const struct net_device *in, const struct net_device *out, int (*okfn)(struct sk_buff *)) { - return ip6t_do_table(skb, hook, in, out, init_net.ipv6.ip6table_mangle); + return ip6t_do_table(skb, hook, in, out, + dev_net(in)->ipv6.ip6table_mangle); } static unsigned int -ip6t_local_hook(unsigned int hook, +ip6t_post_routing_hook(unsigned int hook, + struct sk_buff *skb, + const struct net_device *in, + const struct net_device *out, + int (*okfn)(struct sk_buff *)) +{ + return ip6t_do_table(skb, hook, in, out, + dev_net(out)->ipv6.ip6table_mangle); +} + +static unsigned int +ip6t_local_out_hook(unsigned int hook, struct sk_buff *skb, const struct net_device *in, const struct net_device *out, @@ -108,7 +120,8 @@ ip6t_local_hook(unsigned int hook, /* flowlabel and prio (includes version, which shouldn't change either */ flowlabel = *((u_int32_t *)ipv6_hdr(skb)); - ret = ip6t_do_table(skb, hook, in, out, init_net.ipv6.ip6table_mangle); + ret = ip6t_do_table(skb, hook, in, out, + dev_net(out)->ipv6.ip6table_mangle); if (ret != NF_DROP && ret != NF_STOLEN && (memcmp(&ipv6_hdr(skb)->saddr, &saddr, sizeof(saddr)) @@ -122,35 +135,35 @@ ip6t_local_hook(unsigned int hook, static struct nf_hook_ops ip6t_ops[] __read_mostly = { { - .hook = ip6t_route_hook, + .hook = ip6t_in_hook, .owner = THIS_MODULE, .pf = PF_INET6, .hooknum = NF_INET_PRE_ROUTING, .priority = NF_IP6_PRI_MANGLE, }, { - .hook = ip6t_route_hook, + .hook = ip6t_in_hook, .owner = THIS_MODULE, .pf = PF_INET6, .hooknum = NF_INET_LOCAL_IN, .priority = NF_IP6_PRI_MANGLE, }, { - .hook = ip6t_route_hook, + .hook = ip6t_in_hook, .owner = THIS_MODULE, .pf = PF_INET6, .hooknum = NF_INET_FORWARD, .priority = NF_IP6_PRI_MANGLE, }, { - .hook = ip6t_local_hook, + .hook = ip6t_local_out_hook, .owner = THIS_MODULE, .pf = PF_INET6, .hooknum = NF_INET_LOCAL_OUT, .priority = NF_IP6_PRI_MANGLE, }, { - .hook = ip6t_route_hook, + .hook = ip6t_post_routing_hook, .owner = THIS_MODULE, .pf = PF_INET6, .hooknum = NF_INET_POST_ROUTING, diff --git a/net/ipv6/netfilter/ip6table_raw.c b/net/ipv6/netfilter/ip6table_raw.c index 92b91077ac29..109fab6f831a 100644 --- a/net/ipv6/netfilter/ip6table_raw.c +++ b/net/ipv6/netfilter/ip6table_raw.c @@ -45,25 +45,37 @@ static struct xt_table packet_raw = { /* The work comes in here from netfilter.c. */ static unsigned int -ip6t_hook(unsigned int hook, +ip6t_pre_routing_hook(unsigned int hook, struct sk_buff *skb, const struct net_device *in, const struct net_device *out, int (*okfn)(struct sk_buff *)) { - return ip6t_do_table(skb, hook, in, out, init_net.ipv6.ip6table_raw); + return ip6t_do_table(skb, hook, in, out, + dev_net(in)->ipv6.ip6table_raw); +} + +static unsigned int +ip6t_local_out_hook(unsigned int hook, + struct sk_buff *skb, + const struct net_device *in, + const struct net_device *out, + int (*okfn)(struct sk_buff *)) +{ + return ip6t_do_table(skb, hook, in, out, + dev_net(out)->ipv6.ip6table_raw); } static struct nf_hook_ops ip6t_ops[] __read_mostly = { { - .hook = ip6t_hook, + .hook = ip6t_pre_routing_hook, .pf = PF_INET6, .hooknum = NF_INET_PRE_ROUTING, .priority = NF_IP6_PRI_FIRST, .owner = THIS_MODULE, }, { - .hook = ip6t_hook, + .hook = ip6t_local_out_hook, .pf = PF_INET6, .hooknum = NF_INET_LOCAL_OUT, .priority = NF_IP6_PRI_FIRST, diff --git a/net/ipv6/netfilter/ip6table_security.c b/net/ipv6/netfilter/ip6table_security.c index 6e7131036bc6..20bc52f13e43 100644 --- a/net/ipv6/netfilter/ip6table_security.c +++ b/net/ipv6/netfilter/ip6table_security.c @@ -72,7 +72,7 @@ ip6t_local_in_hook(unsigned int hook, int (*okfn)(struct sk_buff *)) { return ip6t_do_table(skb, hook, in, out, - nf_local_in_net(in, out)->ipv6.ip6table_security); + dev_net(in)->ipv6.ip6table_security); } static unsigned int @@ -83,7 +83,7 @@ ip6t_forward_hook(unsigned int hook, int (*okfn)(struct sk_buff *)) { return ip6t_do_table(skb, hook, in, out, - nf_forward_net(in, out)->ipv6.ip6table_security); + dev_net(in)->ipv6.ip6table_security); } static unsigned int @@ -95,7 +95,7 @@ ip6t_local_out_hook(unsigned int hook, { /* TBD: handle short packets via raw socket */ return ip6t_do_table(skb, hook, in, out, - nf_local_out_net(in, out)->ipv6.ip6table_security); + dev_net(out)->ipv6.ip6table_security); } static struct nf_hook_ops ip6t_ops[] __read_mostly = { diff --git a/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c b/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c index 85050c072abd..e91db16611d9 100644 --- a/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c +++ b/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c @@ -211,11 +211,10 @@ static unsigned int ipv6_defrag(unsigned int hooknum, return NF_STOLEN; } -static unsigned int ipv6_conntrack_in(unsigned int hooknum, - struct sk_buff *skb, - const struct net_device *in, - const struct net_device *out, - int (*okfn)(struct sk_buff *)) +static unsigned int __ipv6_conntrack_in(struct net *net, + unsigned int hooknum, + struct sk_buff *skb, + int (*okfn)(struct sk_buff *)) { struct sk_buff *reasm = skb->nfct_reasm; @@ -225,7 +224,7 @@ static unsigned int ipv6_conntrack_in(unsigned int hooknum, if (!reasm->nfct) { unsigned int ret; - ret = nf_conntrack_in(PF_INET6, hooknum, reasm); + ret = nf_conntrack_in(net, PF_INET6, hooknum, reasm); if (ret != NF_ACCEPT) return ret; } @@ -235,7 +234,16 @@ static unsigned int ipv6_conntrack_in(unsigned int hooknum, return NF_ACCEPT; } - return nf_conntrack_in(PF_INET6, hooknum, skb); + return nf_conntrack_in(net, PF_INET6, hooknum, skb); +} + +static unsigned int ipv6_conntrack_in(unsigned int hooknum, + struct sk_buff *skb, + const struct net_device *in, + const struct net_device *out, + int (*okfn)(struct sk_buff *)) +{ + return __ipv6_conntrack_in(dev_net(in), hooknum, skb, okfn); } static unsigned int ipv6_conntrack_local(unsigned int hooknum, @@ -250,7 +258,7 @@ static unsigned int ipv6_conntrack_local(unsigned int hooknum, printk("ipv6_conntrack_local: packet too short\n"); return NF_ACCEPT; } - return ipv6_conntrack_in(hooknum, skb, in, out, okfn); + return __ipv6_conntrack_in(dev_net(out), hooknum, skb, okfn); } static struct nf_hook_ops ipv6_conntrack_ops[] __read_mostly = { diff --git a/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c b/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c index 14d47d833545..05726177903f 100644 --- a/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c +++ b/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c @@ -81,7 +81,7 @@ static int icmpv6_packet(struct nf_conn *ct, const struct sk_buff *skb, unsigned int dataoff, enum ip_conntrack_info ctinfo, - int pf, + u_int8_t pf, unsigned int hooknum) { /* Try to delete connection immediately after all replies: @@ -93,7 +93,7 @@ static int icmpv6_packet(struct nf_conn *ct, nf_ct_kill_acct(ct, ctinfo, skb); } else { atomic_inc(&ct->proto.icmp.count); - nf_conntrack_event_cache(IPCT_PROTOINFO_VOLATILE, skb); + nf_conntrack_event_cache(IPCT_PROTOINFO_VOLATILE, ct); nf_ct_refresh_acct(ct, ctinfo, skb, nf_ct_icmpv6_timeout); } @@ -122,7 +122,8 @@ static bool icmpv6_new(struct nf_conn *ct, const struct sk_buff *skb, } static int -icmpv6_error_message(struct sk_buff *skb, +icmpv6_error_message(struct net *net, + struct sk_buff *skb, unsigned int icmp6off, enum ip_conntrack_info *ctinfo, unsigned int hooknum) @@ -156,7 +157,7 @@ icmpv6_error_message(struct sk_buff *skb, *ctinfo = IP_CT_RELATED; - h = nf_conntrack_find_get(&intuple); + h = nf_conntrack_find_get(net, &intuple); if (!h) { pr_debug("icmpv6_error: no match\n"); return -NF_ACCEPT; @@ -172,21 +173,21 @@ icmpv6_error_message(struct sk_buff *skb, } static int -icmpv6_error(struct sk_buff *skb, unsigned int dataoff, - enum ip_conntrack_info *ctinfo, int pf, unsigned int hooknum) +icmpv6_error(struct net *net, struct sk_buff *skb, unsigned int dataoff, + enum ip_conntrack_info *ctinfo, u_int8_t pf, unsigned int hooknum) { const struct icmp6hdr *icmp6h; struct icmp6hdr _ih; icmp6h = skb_header_pointer(skb, dataoff, sizeof(_ih), &_ih); if (icmp6h == NULL) { - if (LOG_INVALID(IPPROTO_ICMPV6)) + if (LOG_INVALID(net, IPPROTO_ICMPV6)) nf_log_packet(PF_INET6, 0, skb, NULL, NULL, NULL, "nf_ct_icmpv6: short packet "); return -NF_ACCEPT; } - if (nf_conntrack_checksum && hooknum == NF_INET_PRE_ROUTING && + if (net->ct.sysctl_checksum && hooknum == NF_INET_PRE_ROUTING && nf_ip6_checksum(skb, hooknum, dataoff, IPPROTO_ICMPV6)) { nf_log_packet(PF_INET6, 0, skb, NULL, NULL, NULL, "nf_ct_icmpv6: ICMPv6 checksum failed\n"); @@ -197,7 +198,7 @@ icmpv6_error(struct sk_buff *skb, unsigned int dataoff, if (icmp6h->icmp6_type >= 128) return NF_ACCEPT; - return icmpv6_error_message(skb, dataoff, ctinfo, hooknum); + return icmpv6_error_message(net, skb, dataoff, ctinfo, hooknum); } #if defined(CONFIG_NF_CT_NETLINK) || defined(CONFIG_NF_CT_NETLINK_MODULE) diff --git a/net/netfilter/Kconfig b/net/netfilter/Kconfig index ee898e74808d..f70b4145ffc7 100644 --- a/net/netfilter/Kconfig +++ b/net/netfilter/Kconfig @@ -38,10 +38,11 @@ config NF_CONNTRACK To compile it as a module, choose M here. If unsure, say N. +if NF_CONNTRACK + config NF_CT_ACCT bool "Connection tracking flow accounting" depends on NETFILTER_ADVANCED - depends on NF_CONNTRACK help If this option is enabled, the connection tracking code will keep per-flow packet and byte counters. @@ -63,7 +64,6 @@ config NF_CT_ACCT config NF_CONNTRACK_MARK bool 'Connection mark tracking support' depends on NETFILTER_ADVANCED - depends on NF_CONNTRACK help This option enables support for connection marks, used by the `CONNMARK' target and `connmark' match. Similar to the mark value @@ -72,7 +72,7 @@ config NF_CONNTRACK_MARK config NF_CONNTRACK_SECMARK bool 'Connection tracking security mark support' - depends on NF_CONNTRACK && NETWORK_SECMARK + depends on NETWORK_SECMARK default m if NETFILTER_ADVANCED=n help This option enables security markings to be applied to @@ -85,7 +85,6 @@ config NF_CONNTRACK_SECMARK config NF_CONNTRACK_EVENTS bool "Connection tracking events" - depends on NF_CONNTRACK depends on NETFILTER_ADVANCED help If this option is enabled, the connection tracking code will @@ -96,7 +95,7 @@ config NF_CONNTRACK_EVENTS config NF_CT_PROTO_DCCP tristate 'DCCP protocol connection tracking support (EXPERIMENTAL)' - depends on EXPERIMENTAL && NF_CONNTRACK + depends on EXPERIMENTAL depends on NETFILTER_ADVANCED default IP_DCCP help @@ -107,11 +106,10 @@ config NF_CT_PROTO_DCCP config NF_CT_PROTO_GRE tristate - depends on NF_CONNTRACK config NF_CT_PROTO_SCTP tristate 'SCTP protocol connection tracking support (EXPERIMENTAL)' - depends on EXPERIMENTAL && NF_CONNTRACK + depends on EXPERIMENTAL depends on NETFILTER_ADVANCED default IP_SCTP help @@ -123,7 +121,6 @@ config NF_CT_PROTO_SCTP config NF_CT_PROTO_UDPLITE tristate 'UDP-Lite protocol connection tracking support' - depends on NF_CONNTRACK depends on NETFILTER_ADVANCED help With this option enabled, the layer 3 independent connection @@ -134,7 +131,6 @@ config NF_CT_PROTO_UDPLITE config NF_CONNTRACK_AMANDA tristate "Amanda backup protocol support" - depends on NF_CONNTRACK depends on NETFILTER_ADVANCED select TEXTSEARCH select TEXTSEARCH_KMP @@ -150,7 +146,6 @@ config NF_CONNTRACK_AMANDA config NF_CONNTRACK_FTP tristate "FTP protocol support" - depends on NF_CONNTRACK default m if NETFILTER_ADVANCED=n help Tracking FTP connections is problematic: special helpers are @@ -165,7 +160,7 @@ config NF_CONNTRACK_FTP config NF_CONNTRACK_H323 tristate "H.323 protocol support" - depends on NF_CONNTRACK && (IPV6 || IPV6=n) + depends on (IPV6 || IPV6=n) depends on NETFILTER_ADVANCED help H.323 is a VoIP signalling protocol from ITU-T. As one of the most @@ -185,7 +180,6 @@ config NF_CONNTRACK_H323 config NF_CONNTRACK_IRC tristate "IRC protocol support" - depends on NF_CONNTRACK default m if NETFILTER_ADVANCED=n help There is a commonly-used extension to IRC called @@ -201,7 +195,6 @@ config NF_CONNTRACK_IRC config NF_CONNTRACK_NETBIOS_NS tristate "NetBIOS name service protocol support" - depends on NF_CONNTRACK depends on NETFILTER_ADVANCED help NetBIOS name service requests are sent as broadcast messages from an @@ -221,7 +214,6 @@ config NF_CONNTRACK_NETBIOS_NS config NF_CONNTRACK_PPTP tristate "PPtP protocol support" - depends on NF_CONNTRACK depends on NETFILTER_ADVANCED select NF_CT_PROTO_GRE help @@ -241,7 +233,7 @@ config NF_CONNTRACK_PPTP config NF_CONNTRACK_SANE tristate "SANE protocol support (EXPERIMENTAL)" - depends on EXPERIMENTAL && NF_CONNTRACK + depends on EXPERIMENTAL depends on NETFILTER_ADVANCED help SANE is a protocol for remote access to scanners as implemented @@ -255,7 +247,6 @@ config NF_CONNTRACK_SANE config NF_CONNTRACK_SIP tristate "SIP protocol support" - depends on NF_CONNTRACK default m if NETFILTER_ADVANCED=n help SIP is an application-layer control protocol that can establish, @@ -268,7 +259,6 @@ config NF_CONNTRACK_SIP config NF_CONNTRACK_TFTP tristate "TFTP protocol support" - depends on NF_CONNTRACK depends on NETFILTER_ADVANCED help TFTP connection tracking helper, this is required depending @@ -280,13 +270,29 @@ config NF_CONNTRACK_TFTP config NF_CT_NETLINK tristate 'Connection tracking netlink interface' - depends on NF_CONNTRACK select NETFILTER_NETLINK depends on NF_NAT=n || NF_NAT default m if NETFILTER_ADVANCED=n help This option enables support for a netlink-based userspace interface +# transparent proxy support +config NETFILTER_TPROXY + tristate "Transparent proxying support (EXPERIMENTAL)" + depends on EXPERIMENTAL + depends on IP_NF_MANGLE + depends on NETFILTER_ADVANCED + help + This option enables transparent proxying support, that is, + support for handling non-locally bound IPv4 TCP and UDP sockets. + For it to work you will have to configure certain iptables rules + and use policy routing. For more information on how to set it up + see Documentation/networking/tproxy.txt. + + To compile it as a module, choose M here. If unsure, say N. + +endif # NF_CONNTRACK + config NETFILTER_XTABLES tristate "Netfilter Xtables support (required for ip_tables)" default m if NETFILTER_ADVANCED=n @@ -294,11 +300,12 @@ config NETFILTER_XTABLES This is required if you intend to use any of ip_tables, ip6_tables or arp_tables. +if NETFILTER_XTABLES + # alphabetically ordered list of targets config NETFILTER_XT_TARGET_CLASSIFY tristate '"CLASSIFY" target support' - depends on NETFILTER_XTABLES depends on NETFILTER_ADVANCED help This option adds a `CLASSIFY' target, which enables the user to set @@ -311,8 +318,6 @@ config NETFILTER_XT_TARGET_CLASSIFY config NETFILTER_XT_TARGET_CONNMARK tristate '"CONNMARK" target support' - depends on NETFILTER_XTABLES - depends on IP_NF_MANGLE || IP6_NF_MANGLE depends on NF_CONNTRACK depends on NETFILTER_ADVANCED select NF_CONNTRACK_MARK @@ -325,9 +330,20 @@ config NETFILTER_XT_TARGET_CONNMARK <file:Documentation/kbuild/modules.txt>. The module will be called ipt_CONNMARK.ko. If unsure, say `N'. +config NETFILTER_XT_TARGET_CONNSECMARK + tristate '"CONNSECMARK" target support' + depends on NF_CONNTRACK && NF_CONNTRACK_SECMARK + default m if NETFILTER_ADVANCED=n + help + The CONNSECMARK target copies security markings from packets + to connections, and restores security markings from connections + to packets (if the packets are not already marked). This would + normally be used in conjunction with the SECMARK target. + + To compile it as a module, choose M here. If unsure, say N. + config NETFILTER_XT_TARGET_DSCP tristate '"DSCP" and "TOS" target support' - depends on NETFILTER_XTABLES depends on IP_NF_MANGLE || IP6_NF_MANGLE depends on NETFILTER_ADVANCED help @@ -344,7 +360,6 @@ config NETFILTER_XT_TARGET_DSCP config NETFILTER_XT_TARGET_MARK tristate '"MARK" target support' - depends on NETFILTER_XTABLES default m if NETFILTER_ADVANCED=n help This option adds a `MARK' target, which allows you to create rules @@ -356,21 +371,8 @@ config NETFILTER_XT_TARGET_MARK To compile it as a module, choose M here. If unsure, say N. -config NETFILTER_XT_TARGET_NFQUEUE - tristate '"NFQUEUE" target Support' - depends on NETFILTER_XTABLES - depends on NETFILTER_ADVANCED - help - This target replaced the old obsolete QUEUE target. - - As opposed to QUEUE, it supports 65535 different queues, - not just one. - - To compile it as a module, choose M here. If unsure, say N. - config NETFILTER_XT_TARGET_NFLOG tristate '"NFLOG" target support' - depends on NETFILTER_XTABLES default m if NETFILTER_ADVANCED=n help This option enables the NFLOG target, which allows to LOG @@ -380,9 +382,19 @@ config NETFILTER_XT_TARGET_NFLOG To compile it as a module, choose M here. If unsure, say N. +config NETFILTER_XT_TARGET_NFQUEUE + tristate '"NFQUEUE" target Support' + depends on NETFILTER_ADVANCED + help + This target replaced the old obsolete QUEUE target. + + As opposed to QUEUE, it supports 65535 different queues, + not just one. + + To compile it as a module, choose M here. If unsure, say N. + config NETFILTER_XT_TARGET_NOTRACK tristate '"NOTRACK" target support' - depends on NETFILTER_XTABLES depends on IP_NF_RAW || IP6_NF_RAW depends on NF_CONNTRACK depends on NETFILTER_ADVANCED @@ -397,7 +409,6 @@ config NETFILTER_XT_TARGET_NOTRACK config NETFILTER_XT_TARGET_RATEEST tristate '"RATEEST" target support' - depends on NETFILTER_XTABLES depends on NETFILTER_ADVANCED help This option adds a `RATEEST' target, which allows to measure @@ -406,9 +417,23 @@ config NETFILTER_XT_TARGET_RATEEST To compile it as a module, choose M here. If unsure, say N. +config NETFILTER_XT_TARGET_TPROXY + tristate '"TPROXY" target support (EXPERIMENTAL)' + depends on EXPERIMENTAL + depends on NETFILTER_TPROXY + depends on NETFILTER_XTABLES + depends on NETFILTER_ADVANCED + select NF_DEFRAG_IPV4 + help + This option adds a `TPROXY' target, which is somewhat similar to + REDIRECT. It can only be used in the mangle table and is useful + to redirect traffic to a transparent proxy. It does _not_ depend + on Netfilter connection tracking and NAT, unlike REDIRECT. + + To compile it as a module, choose M here. If unsure, say N. + config NETFILTER_XT_TARGET_TRACE tristate '"TRACE" target support' - depends on NETFILTER_XTABLES depends on IP_NF_RAW || IP6_NF_RAW depends on NETFILTER_ADVANCED help @@ -421,7 +446,7 @@ config NETFILTER_XT_TARGET_TRACE config NETFILTER_XT_TARGET_SECMARK tristate '"SECMARK" target support' - depends on NETFILTER_XTABLES && NETWORK_SECMARK + depends on NETWORK_SECMARK default m if NETFILTER_ADVANCED=n help The SECMARK target allows security marking of network @@ -429,21 +454,9 @@ config NETFILTER_XT_TARGET_SECMARK To compile it as a module, choose M here. If unsure, say N. -config NETFILTER_XT_TARGET_CONNSECMARK - tristate '"CONNSECMARK" target support' - depends on NETFILTER_XTABLES && NF_CONNTRACK && NF_CONNTRACK_SECMARK - default m if NETFILTER_ADVANCED=n - help - The CONNSECMARK target copies security markings from packets - to connections, and restores security markings from connections - to packets (if the packets are not already marked). This would - normally be used in conjunction with the SECMARK target. - - To compile it as a module, choose M here. If unsure, say N. - config NETFILTER_XT_TARGET_TCPMSS tristate '"TCPMSS" target support' - depends on NETFILTER_XTABLES && (IPV6 || IPV6=n) + depends on (IPV6 || IPV6=n) default m if NETFILTER_ADVANCED=n ---help--- This option adds a `TCPMSS' target, which allows you to alter the @@ -470,7 +483,7 @@ config NETFILTER_XT_TARGET_TCPMSS config NETFILTER_XT_TARGET_TCPOPTSTRIP tristate '"TCPOPTSTRIP" target support (EXPERIMENTAL)' - depends on EXPERIMENTAL && NETFILTER_XTABLES + depends on EXPERIMENTAL depends on IP_NF_MANGLE || IP6_NF_MANGLE depends on NETFILTER_ADVANCED help @@ -479,7 +492,6 @@ config NETFILTER_XT_TARGET_TCPOPTSTRIP config NETFILTER_XT_MATCH_COMMENT tristate '"comment" match support' - depends on NETFILTER_XTABLES depends on NETFILTER_ADVANCED help This option adds a `comment' dummy-match, which allows you to put @@ -490,7 +502,6 @@ config NETFILTER_XT_MATCH_COMMENT config NETFILTER_XT_MATCH_CONNBYTES tristate '"connbytes" per-connection counter match support' - depends on NETFILTER_XTABLES depends on NF_CONNTRACK depends on NETFILTER_ADVANCED select NF_CT_ACCT @@ -503,7 +514,6 @@ config NETFILTER_XT_MATCH_CONNBYTES config NETFILTER_XT_MATCH_CONNLIMIT tristate '"connlimit" match support"' - depends on NETFILTER_XTABLES depends on NF_CONNTRACK depends on NETFILTER_ADVANCED ---help--- @@ -512,7 +522,6 @@ config NETFILTER_XT_MATCH_CONNLIMIT config NETFILTER_XT_MATCH_CONNMARK tristate '"connmark" connection mark match support' - depends on NETFILTER_XTABLES depends on NF_CONNTRACK depends on NETFILTER_ADVANCED select NF_CONNTRACK_MARK @@ -526,7 +535,6 @@ config NETFILTER_XT_MATCH_CONNMARK config NETFILTER_XT_MATCH_CONNTRACK tristate '"conntrack" connection tracking match support' - depends on NETFILTER_XTABLES depends on NF_CONNTRACK default m if NETFILTER_ADVANCED=n help @@ -540,7 +548,6 @@ config NETFILTER_XT_MATCH_CONNTRACK config NETFILTER_XT_MATCH_DCCP tristate '"dccp" protocol match support' - depends on NETFILTER_XTABLES depends on NETFILTER_ADVANCED default IP_DCCP help @@ -553,7 +560,6 @@ config NETFILTER_XT_MATCH_DCCP config NETFILTER_XT_MATCH_DSCP tristate '"dscp" and "tos" match support' - depends on NETFILTER_XTABLES depends on NETFILTER_ADVANCED help This option adds a `DSCP' match, which allows you to match against @@ -569,7 +575,6 @@ config NETFILTER_XT_MATCH_DSCP config NETFILTER_XT_MATCH_ESP tristate '"esp" match support' - depends on NETFILTER_XTABLES depends on NETFILTER_ADVANCED help This match extension allows you to match a range of SPIs @@ -577,9 +582,23 @@ config NETFILTER_XT_MATCH_ESP To compile it as a module, choose M here. If unsure, say N. +config NETFILTER_XT_MATCH_HASHLIMIT + tristate '"hashlimit" match support' + depends on (IP6_NF_IPTABLES || IP6_NF_IPTABLES=n) + depends on NETFILTER_ADVANCED + help + This option adds a `hashlimit' match. + + As opposed to `limit', this match dynamically creates a hash table + of limit buckets, based on your selection of source/destination + addresses and/or ports. + + It enables you to express policies like `10kpps for any given + destination address' or `500pps from any given source address' + with a single rule. + config NETFILTER_XT_MATCH_HELPER tristate '"helper" match support' - depends on NETFILTER_XTABLES depends on NF_CONNTRACK depends on NETFILTER_ADVANCED help @@ -590,7 +609,6 @@ config NETFILTER_XT_MATCH_HELPER config NETFILTER_XT_MATCH_IPRANGE tristate '"iprange" address range match support' - depends on NETFILTER_XTABLES depends on NETFILTER_ADVANCED ---help--- This option adds a "iprange" match, which allows you to match based on @@ -601,7 +619,6 @@ config NETFILTER_XT_MATCH_IPRANGE config NETFILTER_XT_MATCH_LENGTH tristate '"length" match support' - depends on NETFILTER_XTABLES depends on NETFILTER_ADVANCED help This option allows you to match the length of a packet against a @@ -611,7 +628,6 @@ config NETFILTER_XT_MATCH_LENGTH config NETFILTER_XT_MATCH_LIMIT tristate '"limit" match support' - depends on NETFILTER_XTABLES depends on NETFILTER_ADVANCED help limit matching allows you to control the rate at which a rule can be @@ -622,7 +638,6 @@ config NETFILTER_XT_MATCH_LIMIT config NETFILTER_XT_MATCH_MAC tristate '"mac" address match support' - depends on NETFILTER_XTABLES depends on NETFILTER_ADVANCED help MAC matching allows you to match packets based on the source @@ -632,7 +647,6 @@ config NETFILTER_XT_MATCH_MAC config NETFILTER_XT_MATCH_MARK tristate '"mark" match support' - depends on NETFILTER_XTABLES default m if NETFILTER_ADVANCED=n help Netfilter mark matching allows you to match packets based on the @@ -641,9 +655,18 @@ config NETFILTER_XT_MATCH_MARK To compile it as a module, choose M here. If unsure, say N. +config NETFILTER_XT_MATCH_MULTIPORT + tristate '"multiport" Multiple port match support' + depends on NETFILTER_ADVANCED + help + Multiport matching allows you to match TCP or UDP packets based on + a series of source or destination ports: normally a rule can only + match a single range of ports. + + To compile it as a module, choose M here. If unsure, say N. + config NETFILTER_XT_MATCH_OWNER tristate '"owner" match support' - depends on NETFILTER_XTABLES depends on NETFILTER_ADVANCED ---help--- Socket owner matching allows you to match locally-generated packets @@ -652,7 +675,7 @@ config NETFILTER_XT_MATCH_OWNER config NETFILTER_XT_MATCH_POLICY tristate 'IPsec "policy" match support' - depends on NETFILTER_XTABLES && XFRM + depends on XFRM default m if NETFILTER_ADVANCED=n help Policy matching allows you to match packets based on the @@ -661,20 +684,9 @@ config NETFILTER_XT_MATCH_POLICY To compile it as a module, choose M here. If unsure, say N. -config NETFILTER_XT_MATCH_MULTIPORT - tristate '"multiport" Multiple port match support' - depends on NETFILTER_XTABLES - depends on NETFILTER_ADVANCED - help - Multiport matching allows you to match TCP or UDP packets based on - a series of source or destination ports: normally a rule can only - match a single range of ports. - - To compile it as a module, choose M here. If unsure, say N. - config NETFILTER_XT_MATCH_PHYSDEV tristate '"physdev" match support' - depends on NETFILTER_XTABLES && BRIDGE && BRIDGE_NETFILTER + depends on BRIDGE && BRIDGE_NETFILTER depends on NETFILTER_ADVANCED help Physdev packet matching matches against the physical bridge ports @@ -684,7 +696,6 @@ config NETFILTER_XT_MATCH_PHYSDEV config NETFILTER_XT_MATCH_PKTTYPE tristate '"pkttype" packet type match support' - depends on NETFILTER_XTABLES depends on NETFILTER_ADVANCED help Packet type matching allows you to match a packet by @@ -697,7 +708,6 @@ config NETFILTER_XT_MATCH_PKTTYPE config NETFILTER_XT_MATCH_QUOTA tristate '"quota" match support' - depends on NETFILTER_XTABLES depends on NETFILTER_ADVANCED help This option adds a `quota' match, which allows to match on a @@ -708,7 +718,6 @@ config NETFILTER_XT_MATCH_QUOTA config NETFILTER_XT_MATCH_RATEEST tristate '"rateest" match support' - depends on NETFILTER_XTABLES depends on NETFILTER_ADVANCED select NETFILTER_XT_TARGET_RATEEST help @@ -719,7 +728,6 @@ config NETFILTER_XT_MATCH_RATEEST config NETFILTER_XT_MATCH_REALM tristate '"realm" match support' - depends on NETFILTER_XTABLES depends on NETFILTER_ADVANCED select NET_CLS_ROUTE help @@ -732,9 +740,26 @@ config NETFILTER_XT_MATCH_REALM If you want to compile it as a module, say M here and read <file:Documentation/kbuild/modules.txt>. If unsure, say `N'. +config NETFILTER_XT_MATCH_RECENT + tristate '"recent" match support' + depends on NETFILTER_ADVANCED + ---help--- + This match is used for creating one or many lists of recently + used addresses and then matching against that/those list(s). + + Short options are available by using 'iptables -m recent -h' + Official Website: <http://snowman.net/projects/ipt_recent/> + +config NETFILTER_XT_MATCH_RECENT_PROC_COMPAT + bool 'Enable obsolete /proc/net/ipt_recent' + depends on NETFILTER_XT_MATCH_RECENT && PROC_FS + ---help--- + This option enables the old /proc/net/ipt_recent interface, + which has been obsoleted by /proc/net/xt_recent. + config NETFILTER_XT_MATCH_SCTP tristate '"sctp" protocol match support (EXPERIMENTAL)' - depends on NETFILTER_XTABLES && EXPERIMENTAL + depends on EXPERIMENTAL depends on NETFILTER_ADVANCED default IP_SCTP help @@ -745,9 +770,23 @@ config NETFILTER_XT_MATCH_SCTP If you want to compile it as a module, say M here and read <file:Documentation/kbuild/modules.txt>. If unsure, say `N'. +config NETFILTER_XT_MATCH_SOCKET + tristate '"socket" match support (EXPERIMENTAL)' + depends on EXPERIMENTAL + depends on NETFILTER_TPROXY + depends on NETFILTER_XTABLES + depends on NETFILTER_ADVANCED + select NF_DEFRAG_IPV4 + help + This option adds a `socket' match, which can be used to match + packets for which a TCP or UDP socket lookup finds a valid socket. + It can be used in combination with the MARK target and policy + routing to implement full featured non-locally bound sockets. + + To compile it as a module, choose M here. If unsure, say N. + config NETFILTER_XT_MATCH_STATE tristate '"state" match support' - depends on NETFILTER_XTABLES depends on NF_CONNTRACK default m if NETFILTER_ADVANCED=n help @@ -759,7 +798,6 @@ config NETFILTER_XT_MATCH_STATE config NETFILTER_XT_MATCH_STATISTIC tristate '"statistic" match support' - depends on NETFILTER_XTABLES depends on NETFILTER_ADVANCED help This option adds a `statistic' match, which allows you to match @@ -769,7 +807,6 @@ config NETFILTER_XT_MATCH_STATISTIC config NETFILTER_XT_MATCH_STRING tristate '"string" match support' - depends on NETFILTER_XTABLES depends on NETFILTER_ADVANCED select TEXTSEARCH select TEXTSEARCH_KMP @@ -783,7 +820,6 @@ config NETFILTER_XT_MATCH_STRING config NETFILTER_XT_MATCH_TCPMSS tristate '"tcpmss" match support' - depends on NETFILTER_XTABLES depends on NETFILTER_ADVANCED help This option adds a `tcpmss' match, which allows you to examine the @@ -794,7 +830,6 @@ config NETFILTER_XT_MATCH_TCPMSS config NETFILTER_XT_MATCH_TIME tristate '"time" match support' - depends on NETFILTER_XTABLES depends on NETFILTER_ADVANCED ---help--- This option adds a "time" match, which allows you to match based on @@ -809,7 +844,6 @@ config NETFILTER_XT_MATCH_TIME config NETFILTER_XT_MATCH_U32 tristate '"u32" match support' - depends on NETFILTER_XTABLES depends on NETFILTER_ADVANCED ---help--- u32 allows you to extract quantities of up to 4 bytes from a packet, @@ -821,20 +855,6 @@ config NETFILTER_XT_MATCH_U32 Details and examples are in the kernel module source. -config NETFILTER_XT_MATCH_HASHLIMIT - tristate '"hashlimit" match support' - depends on NETFILTER_XTABLES && (IP6_NF_IPTABLES || IP6_NF_IPTABLES=n) - depends on NETFILTER_ADVANCED - help - This option adds a `hashlimit' match. - - As opposed to `limit', this match dynamically creates a hash table - of limit buckets, based on your selection of source/destination - addresses and/or ports. - - It enables you to express policies like `10kpps for any given - destination address' or `500pps from any given source address' - with a single rule. +endif # NETFILTER_XTABLES endmenu - diff --git a/net/netfilter/Makefile b/net/netfilter/Makefile index 3bd2cc556aea..8ce67665882d 100644 --- a/net/netfilter/Makefile +++ b/net/netfilter/Makefile @@ -34,6 +34,9 @@ obj-$(CONFIG_NF_CONNTRACK_SANE) += nf_conntrack_sane.o obj-$(CONFIG_NF_CONNTRACK_SIP) += nf_conntrack_sip.o obj-$(CONFIG_NF_CONNTRACK_TFTP) += nf_conntrack_tftp.o +# transparent proxy support +obj-$(CONFIG_NETFILTER_TPROXY) += nf_tproxy_core.o + # generic X tables obj-$(CONFIG_NETFILTER_XTABLES) += x_tables.o xt_tcpudp.o @@ -48,6 +51,7 @@ obj-$(CONFIG_NETFILTER_XT_TARGET_NFQUEUE) += xt_NFQUEUE.o obj-$(CONFIG_NETFILTER_XT_TARGET_NOTRACK) += xt_NOTRACK.o obj-$(CONFIG_NETFILTER_XT_TARGET_RATEEST) += xt_RATEEST.o obj-$(CONFIG_NETFILTER_XT_TARGET_SECMARK) += xt_SECMARK.o +obj-$(CONFIG_NETFILTER_XT_TARGET_TPROXY) += xt_TPROXY.o obj-$(CONFIG_NETFILTER_XT_TARGET_TCPMSS) += xt_TCPMSS.o obj-$(CONFIG_NETFILTER_XT_TARGET_TCPOPTSTRIP) += xt_TCPOPTSTRIP.o obj-$(CONFIG_NETFILTER_XT_TARGET_TRACE) += xt_TRACE.o @@ -76,7 +80,9 @@ obj-$(CONFIG_NETFILTER_XT_MATCH_POLICY) += xt_policy.o obj-$(CONFIG_NETFILTER_XT_MATCH_QUOTA) += xt_quota.o obj-$(CONFIG_NETFILTER_XT_MATCH_RATEEST) += xt_rateest.o obj-$(CONFIG_NETFILTER_XT_MATCH_REALM) += xt_realm.o +obj-$(CONFIG_NETFILTER_XT_MATCH_RECENT) += xt_recent.o obj-$(CONFIG_NETFILTER_XT_MATCH_SCTP) += xt_sctp.o +obj-$(CONFIG_NETFILTER_XT_MATCH_SOCKET) += xt_socket.o obj-$(CONFIG_NETFILTER_XT_MATCH_STATE) += xt_state.o obj-$(CONFIG_NETFILTER_XT_MATCH_STATISTIC) += xt_statistic.o obj-$(CONFIG_NETFILTER_XT_MATCH_STRING) += xt_string.o diff --git a/net/netfilter/core.c b/net/netfilter/core.c index 292fa28146fb..a90ac83c5918 100644 --- a/net/netfilter/core.c +++ b/net/netfilter/core.c @@ -26,7 +26,7 @@ static DEFINE_MUTEX(afinfo_mutex); -const struct nf_afinfo *nf_afinfo[NPROTO] __read_mostly; +const struct nf_afinfo *nf_afinfo[NFPROTO_NUMPROTO] __read_mostly; EXPORT_SYMBOL(nf_afinfo); int nf_register_afinfo(const struct nf_afinfo *afinfo) @@ -51,7 +51,7 @@ void nf_unregister_afinfo(const struct nf_afinfo *afinfo) } EXPORT_SYMBOL_GPL(nf_unregister_afinfo); -struct list_head nf_hooks[NPROTO][NF_MAX_HOOKS] __read_mostly; +struct list_head nf_hooks[NFPROTO_NUMPROTO][NF_MAX_HOOKS] __read_mostly; EXPORT_SYMBOL(nf_hooks); static DEFINE_MUTEX(nf_hook_mutex); @@ -113,7 +113,7 @@ EXPORT_SYMBOL(nf_unregister_hooks); unsigned int nf_iterate(struct list_head *head, struct sk_buff *skb, - int hook, + unsigned int hook, const struct net_device *indev, const struct net_device *outdev, struct list_head **i, @@ -155,7 +155,7 @@ unsigned int nf_iterate(struct list_head *head, /* Returns 1 if okfn() needs to be executed by the caller, * -EPERM for NF_DROP, 0 otherwise. */ -int nf_hook_slow(int pf, unsigned int hook, struct sk_buff *skb, +int nf_hook_slow(u_int8_t pf, unsigned int hook, struct sk_buff *skb, struct net_device *indev, struct net_device *outdev, int (*okfn)(struct sk_buff *), @@ -165,14 +165,6 @@ int nf_hook_slow(int pf, unsigned int hook, struct sk_buff *skb, unsigned int verdict; int ret = 0; -#ifdef CONFIG_NET_NS - struct net *net; - - net = indev == NULL ? dev_net(outdev) : dev_net(indev); - if (net != &init_net) - return 1; -#endif - /* We may already have this, but read-locks nest anyway */ rcu_read_lock(); @@ -264,7 +256,7 @@ EXPORT_SYMBOL(proc_net_netfilter); void __init netfilter_init(void) { int i, h; - for (i = 0; i < NPROTO; i++) { + for (i = 0; i < ARRAY_SIZE(nf_hooks); i++) { for (h = 0; h < NF_MAX_HOOKS; h++) INIT_LIST_HEAD(&nf_hooks[i][h]); } diff --git a/net/netfilter/nf_conntrack_acct.c b/net/netfilter/nf_conntrack_acct.c index 59bd8b903a19..03591d37b9cc 100644 --- a/net/netfilter/nf_conntrack_acct.c +++ b/net/netfilter/nf_conntrack_acct.c @@ -22,19 +22,17 @@ #define NF_CT_ACCT_DEFAULT 0 #endif -int nf_ct_acct __read_mostly = NF_CT_ACCT_DEFAULT; -EXPORT_SYMBOL_GPL(nf_ct_acct); +static int nf_ct_acct __read_mostly = NF_CT_ACCT_DEFAULT; module_param_named(acct, nf_ct_acct, bool, 0644); MODULE_PARM_DESC(acct, "Enable connection tracking flow accounting."); #ifdef CONFIG_SYSCTL -static struct ctl_table_header *acct_sysctl_header; static struct ctl_table acct_sysctl_table[] = { { .ctl_name = CTL_UNNUMBERED, .procname = "nf_conntrack_acct", - .data = &nf_ct_acct, + .data = &init_net.ct.sysctl_acct, .maxlen = sizeof(unsigned int), .mode = 0644, .proc_handler = &proc_dointvec, @@ -64,41 +62,87 @@ static struct nf_ct_ext_type acct_extend __read_mostly = { .id = NF_CT_EXT_ACCT, }; -int nf_conntrack_acct_init(void) +#ifdef CONFIG_SYSCTL +static int nf_conntrack_acct_init_sysctl(struct net *net) { - int ret; + struct ctl_table *table; -#ifdef CONFIG_NF_CT_ACCT - printk(KERN_WARNING "CONFIG_NF_CT_ACCT is deprecated and will be removed soon. Plase use\n"); - printk(KERN_WARNING "nf_conntrack.acct=1 kernel paramater, acct=1 nf_conntrack module option or\n"); - printk(KERN_WARNING "sysctl net.netfilter.nf_conntrack_acct=1 to enable it.\n"); -#endif + table = kmemdup(acct_sysctl_table, sizeof(acct_sysctl_table), + GFP_KERNEL); + if (!table) + goto out; + + table[0].data = &net->ct.sysctl_acct; - ret = nf_ct_extend_register(&acct_extend); - if (ret < 0) { - printk(KERN_ERR "nf_conntrack_acct: Unable to register extension\n"); - return ret; + net->ct.acct_sysctl_header = register_net_sysctl_table(net, + nf_net_netfilter_sysctl_path, table); + if (!net->ct.acct_sysctl_header) { + printk(KERN_ERR "nf_conntrack_acct: can't register to sysctl.\n"); + goto out_register; } + return 0; -#ifdef CONFIG_SYSCTL - acct_sysctl_header = register_sysctl_paths(nf_net_netfilter_sysctl_path, - acct_sysctl_table); +out_register: + kfree(table); +out: + return -ENOMEM; +} - if (!acct_sysctl_header) { - nf_ct_extend_unregister(&acct_extend); +static void nf_conntrack_acct_fini_sysctl(struct net *net) +{ + struct ctl_table *table; - printk(KERN_ERR "nf_conntrack_acct: can't register to sysctl.\n"); - return -ENOMEM; - } + table = net->ct.acct_sysctl_header->ctl_table_arg; + unregister_net_sysctl_table(net->ct.acct_sysctl_header); + kfree(table); +} +#else +static int nf_conntrack_acct_init_sysctl(struct net *net) +{ + return 0; +} + +static void nf_conntrack_acct_fini_sysctl(struct net *net) +{ +} +#endif + +int nf_conntrack_acct_init(struct net *net) +{ + int ret; + + net->ct.sysctl_acct = nf_ct_acct; + + if (net_eq(net, &init_net)) { +#ifdef CONFIG_NF_CT_ACCT + printk(KERN_WARNING "CONFIG_NF_CT_ACCT is deprecated and will be removed soon. Plase use\n"); + printk(KERN_WARNING "nf_conntrack.acct=1 kernel paramater, acct=1 nf_conntrack module option or\n"); + printk(KERN_WARNING "sysctl net.netfilter.nf_conntrack_acct=1 to enable it.\n"); #endif + ret = nf_ct_extend_register(&acct_extend); + if (ret < 0) { + printk(KERN_ERR "nf_conntrack_acct: Unable to register extension\n"); + goto out_extend_register; + } + } + + ret = nf_conntrack_acct_init_sysctl(net); + if (ret < 0) + goto out_sysctl; + return 0; + +out_sysctl: + if (net_eq(net, &init_net)) + nf_ct_extend_unregister(&acct_extend); +out_extend_register: + return ret; } -void nf_conntrack_acct_fini(void) +void nf_conntrack_acct_fini(struct net *net) { -#ifdef CONFIG_SYSCTL - unregister_sysctl_table(acct_sysctl_header); -#endif - nf_ct_extend_unregister(&acct_extend); + nf_conntrack_acct_fini_sysctl(net); + if (net_eq(net, &init_net)) + nf_ct_extend_unregister(&acct_extend); } diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c index 9d1830da8e84..27de3c7b006e 100644 --- a/net/netfilter/nf_conntrack_core.c +++ b/net/netfilter/nf_conntrack_core.c @@ -44,30 +44,17 @@ DEFINE_SPINLOCK(nf_conntrack_lock); EXPORT_SYMBOL_GPL(nf_conntrack_lock); -/* nf_conntrack_standalone needs this */ -atomic_t nf_conntrack_count = ATOMIC_INIT(0); -EXPORT_SYMBOL_GPL(nf_conntrack_count); - unsigned int nf_conntrack_htable_size __read_mostly; EXPORT_SYMBOL_GPL(nf_conntrack_htable_size); int nf_conntrack_max __read_mostly; EXPORT_SYMBOL_GPL(nf_conntrack_max); -struct hlist_head *nf_conntrack_hash __read_mostly; -EXPORT_SYMBOL_GPL(nf_conntrack_hash); - struct nf_conn nf_conntrack_untracked __read_mostly; EXPORT_SYMBOL_GPL(nf_conntrack_untracked); -unsigned int nf_ct_log_invalid __read_mostly; -HLIST_HEAD(unconfirmed); -static int nf_conntrack_vmalloc __read_mostly; static struct kmem_cache *nf_conntrack_cachep __read_mostly; -DEFINE_PER_CPU(struct ip_conntrack_stat, nf_conntrack_stat); -EXPORT_PER_CPU_SYMBOL(nf_conntrack_stat); - static int nf_conntrack_hash_rnd_initted; static unsigned int nf_conntrack_hash_rnd; @@ -180,6 +167,7 @@ static void destroy_conntrack(struct nf_conntrack *nfct) { struct nf_conn *ct = (struct nf_conn *)nfct; + struct net *net = nf_ct_net(ct); struct nf_conntrack_l4proto *l4proto; pr_debug("destroy_conntrack(%p)\n", ct); @@ -212,7 +200,7 @@ destroy_conntrack(struct nf_conntrack *nfct) hlist_del(&ct->tuplehash[IP_CT_DIR_ORIGINAL].hnode); } - NF_CT_STAT_INC(delete); + NF_CT_STAT_INC(net, delete); spin_unlock_bh(&nf_conntrack_lock); if (ct->master) @@ -225,6 +213,7 @@ destroy_conntrack(struct nf_conntrack *nfct) static void death_by_timeout(unsigned long ul_conntrack) { struct nf_conn *ct = (void *)ul_conntrack; + struct net *net = nf_ct_net(ct); struct nf_conn_help *help = nfct_help(ct); struct nf_conntrack_helper *helper; @@ -239,14 +228,14 @@ static void death_by_timeout(unsigned long ul_conntrack) spin_lock_bh(&nf_conntrack_lock); /* Inside lock so preempt is disabled on module removal path. * Otherwise we can get spurious warnings. */ - NF_CT_STAT_INC(delete_list); + NF_CT_STAT_INC(net, delete_list); clean_from_lists(ct); spin_unlock_bh(&nf_conntrack_lock); nf_ct_put(ct); } struct nf_conntrack_tuple_hash * -__nf_conntrack_find(const struct nf_conntrack_tuple *tuple) +__nf_conntrack_find(struct net *net, const struct nf_conntrack_tuple *tuple) { struct nf_conntrack_tuple_hash *h; struct hlist_node *n; @@ -256,13 +245,13 @@ __nf_conntrack_find(const struct nf_conntrack_tuple *tuple) * at least once for the stats anyway. */ local_bh_disable(); - hlist_for_each_entry_rcu(h, n, &nf_conntrack_hash[hash], hnode) { + hlist_for_each_entry_rcu(h, n, &net->ct.hash[hash], hnode) { if (nf_ct_tuple_equal(tuple, &h->tuple)) { - NF_CT_STAT_INC(found); + NF_CT_STAT_INC(net, found); local_bh_enable(); return h; } - NF_CT_STAT_INC(searched); + NF_CT_STAT_INC(net, searched); } local_bh_enable(); @@ -272,13 +261,13 @@ EXPORT_SYMBOL_GPL(__nf_conntrack_find); /* Find a connection corresponding to a tuple. */ struct nf_conntrack_tuple_hash * -nf_conntrack_find_get(const struct nf_conntrack_tuple *tuple) +nf_conntrack_find_get(struct net *net, const struct nf_conntrack_tuple *tuple) { struct nf_conntrack_tuple_hash *h; struct nf_conn *ct; rcu_read_lock(); - h = __nf_conntrack_find(tuple); + h = __nf_conntrack_find(net, tuple); if (h) { ct = nf_ct_tuplehash_to_ctrack(h); if (unlikely(!atomic_inc_not_zero(&ct->ct_general.use))) @@ -294,10 +283,12 @@ static void __nf_conntrack_hash_insert(struct nf_conn *ct, unsigned int hash, unsigned int repl_hash) { + struct net *net = nf_ct_net(ct); + hlist_add_head_rcu(&ct->tuplehash[IP_CT_DIR_ORIGINAL].hnode, - &nf_conntrack_hash[hash]); + &net->ct.hash[hash]); hlist_add_head_rcu(&ct->tuplehash[IP_CT_DIR_REPLY].hnode, - &nf_conntrack_hash[repl_hash]); + &net->ct.hash[repl_hash]); } void nf_conntrack_hash_insert(struct nf_conn *ct) @@ -323,8 +314,10 @@ __nf_conntrack_confirm(struct sk_buff *skb) struct nf_conn_help *help; struct hlist_node *n; enum ip_conntrack_info ctinfo; + struct net *net; ct = nf_ct_get(skb, &ctinfo); + net = nf_ct_net(ct); /* ipt_REJECT uses nf_conntrack_attach to attach related ICMP/TCP RST packets in other direction. Actual packet @@ -351,11 +344,11 @@ __nf_conntrack_confirm(struct sk_buff *skb) /* See if there's one in the list already, including reverse: NAT could have grabbed it without realizing, since we're not in the hash. If there is, we lost race. */ - hlist_for_each_entry(h, n, &nf_conntrack_hash[hash], hnode) + hlist_for_each_entry(h, n, &net->ct.hash[hash], hnode) if (nf_ct_tuple_equal(&ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple, &h->tuple)) goto out; - hlist_for_each_entry(h, n, &nf_conntrack_hash[repl_hash], hnode) + hlist_for_each_entry(h, n, &net->ct.hash[repl_hash], hnode) if (nf_ct_tuple_equal(&ct->tuplehash[IP_CT_DIR_REPLY].tuple, &h->tuple)) goto out; @@ -371,22 +364,22 @@ __nf_conntrack_confirm(struct sk_buff *skb) add_timer(&ct->timeout); atomic_inc(&ct->ct_general.use); set_bit(IPS_CONFIRMED_BIT, &ct->status); - NF_CT_STAT_INC(insert); + NF_CT_STAT_INC(net, insert); spin_unlock_bh(&nf_conntrack_lock); help = nfct_help(ct); if (help && help->helper) - nf_conntrack_event_cache(IPCT_HELPER, skb); + nf_conntrack_event_cache(IPCT_HELPER, ct); #ifdef CONFIG_NF_NAT_NEEDED if (test_bit(IPS_SRC_NAT_DONE_BIT, &ct->status) || test_bit(IPS_DST_NAT_DONE_BIT, &ct->status)) - nf_conntrack_event_cache(IPCT_NATINFO, skb); + nf_conntrack_event_cache(IPCT_NATINFO, ct); #endif nf_conntrack_event_cache(master_ct(ct) ? - IPCT_RELATED : IPCT_NEW, skb); + IPCT_RELATED : IPCT_NEW, ct); return NF_ACCEPT; out: - NF_CT_STAT_INC(insert_failed); + NF_CT_STAT_INC(net, insert_failed); spin_unlock_bh(&nf_conntrack_lock); return NF_DROP; } @@ -398,6 +391,7 @@ int nf_conntrack_tuple_taken(const struct nf_conntrack_tuple *tuple, const struct nf_conn *ignored_conntrack) { + struct net *net = nf_ct_net(ignored_conntrack); struct nf_conntrack_tuple_hash *h; struct hlist_node *n; unsigned int hash = hash_conntrack(tuple); @@ -406,14 +400,14 @@ nf_conntrack_tuple_taken(const struct nf_conntrack_tuple *tuple, * least once for the stats anyway. */ rcu_read_lock_bh(); - hlist_for_each_entry_rcu(h, n, &nf_conntrack_hash[hash], hnode) { + hlist_for_each_entry_rcu(h, n, &net->ct.hash[hash], hnode) { if (nf_ct_tuplehash_to_ctrack(h) != ignored_conntrack && nf_ct_tuple_equal(tuple, &h->tuple)) { - NF_CT_STAT_INC(found); + NF_CT_STAT_INC(net, found); rcu_read_unlock_bh(); return 1; } - NF_CT_STAT_INC(searched); + NF_CT_STAT_INC(net, searched); } rcu_read_unlock_bh(); @@ -425,7 +419,7 @@ EXPORT_SYMBOL_GPL(nf_conntrack_tuple_taken); /* There's a small race here where we may free a just-assured connection. Too bad: we're in trouble anyway. */ -static noinline int early_drop(unsigned int hash) +static noinline int early_drop(struct net *net, unsigned int hash) { /* Use oldest entry, which is roughly LRU */ struct nf_conntrack_tuple_hash *h; @@ -436,7 +430,7 @@ static noinline int early_drop(unsigned int hash) rcu_read_lock(); for (i = 0; i < nf_conntrack_htable_size; i++) { - hlist_for_each_entry_rcu(h, n, &nf_conntrack_hash[hash], + hlist_for_each_entry_rcu(h, n, &net->ct.hash[hash], hnode) { tmp = nf_ct_tuplehash_to_ctrack(h); if (!test_bit(IPS_ASSURED_BIT, &tmp->status)) @@ -458,13 +452,14 @@ static noinline int early_drop(unsigned int hash) if (del_timer(&ct->timeout)) { death_by_timeout((unsigned long)ct); dropped = 1; - NF_CT_STAT_INC_ATOMIC(early_drop); + NF_CT_STAT_INC_ATOMIC(net, early_drop); } nf_ct_put(ct); return dropped; } -struct nf_conn *nf_conntrack_alloc(const struct nf_conntrack_tuple *orig, +struct nf_conn *nf_conntrack_alloc(struct net *net, + const struct nf_conntrack_tuple *orig, const struct nf_conntrack_tuple *repl, gfp_t gfp) { @@ -476,13 +471,13 @@ struct nf_conn *nf_conntrack_alloc(const struct nf_conntrack_tuple *orig, } /* We don't want any race condition at early drop stage */ - atomic_inc(&nf_conntrack_count); + atomic_inc(&net->ct.count); if (nf_conntrack_max && - unlikely(atomic_read(&nf_conntrack_count) > nf_conntrack_max)) { + unlikely(atomic_read(&net->ct.count) > nf_conntrack_max)) { unsigned int hash = hash_conntrack(orig); - if (!early_drop(hash)) { - atomic_dec(&nf_conntrack_count); + if (!early_drop(net, hash)) { + atomic_dec(&net->ct.count); if (net_ratelimit()) printk(KERN_WARNING "nf_conntrack: table full, dropping" @@ -494,7 +489,7 @@ struct nf_conn *nf_conntrack_alloc(const struct nf_conntrack_tuple *orig, ct = kmem_cache_zalloc(nf_conntrack_cachep, gfp); if (ct == NULL) { pr_debug("nf_conntrack_alloc: Can't alloc conntrack.\n"); - atomic_dec(&nf_conntrack_count); + atomic_dec(&net->ct.count); return ERR_PTR(-ENOMEM); } @@ -503,6 +498,9 @@ struct nf_conn *nf_conntrack_alloc(const struct nf_conntrack_tuple *orig, ct->tuplehash[IP_CT_DIR_REPLY].tuple = *repl; /* Don't set timer yet: wait for confirmation */ setup_timer(&ct->timeout, death_by_timeout, (unsigned long)ct); +#ifdef CONFIG_NET_NS + ct->ct_net = net; +#endif INIT_RCU_HEAD(&ct->rcu); return ct; @@ -512,10 +510,11 @@ EXPORT_SYMBOL_GPL(nf_conntrack_alloc); static void nf_conntrack_free_rcu(struct rcu_head *head) { struct nf_conn *ct = container_of(head, struct nf_conn, rcu); + struct net *net = nf_ct_net(ct); nf_ct_ext_free(ct); kmem_cache_free(nf_conntrack_cachep, ct); - atomic_dec(&nf_conntrack_count); + atomic_dec(&net->ct.count); } void nf_conntrack_free(struct nf_conn *ct) @@ -528,7 +527,8 @@ EXPORT_SYMBOL_GPL(nf_conntrack_free); /* Allocate a new conntrack: we return -ENOMEM if classification failed due to stress. Otherwise it really is unclassifiable. */ static struct nf_conntrack_tuple_hash * -init_conntrack(const struct nf_conntrack_tuple *tuple, +init_conntrack(struct net *net, + const struct nf_conntrack_tuple *tuple, struct nf_conntrack_l3proto *l3proto, struct nf_conntrack_l4proto *l4proto, struct sk_buff *skb, @@ -544,7 +544,7 @@ init_conntrack(const struct nf_conntrack_tuple *tuple, return NULL; } - ct = nf_conntrack_alloc(tuple, &repl_tuple, GFP_ATOMIC); + ct = nf_conntrack_alloc(net, tuple, &repl_tuple, GFP_ATOMIC); if (ct == NULL || IS_ERR(ct)) { pr_debug("Can't allocate conntrack.\n"); return (struct nf_conntrack_tuple_hash *)ct; @@ -559,7 +559,7 @@ init_conntrack(const struct nf_conntrack_tuple *tuple, nf_ct_acct_ext_add(ct, GFP_ATOMIC); spin_lock_bh(&nf_conntrack_lock); - exp = nf_ct_find_expectation(tuple); + exp = nf_ct_find_expectation(net, tuple); if (exp) { pr_debug("conntrack: expectation arrives ct=%p exp=%p\n", ct, exp); @@ -579,7 +579,7 @@ init_conntrack(const struct nf_conntrack_tuple *tuple, ct->secmark = exp->master->secmark; #endif nf_conntrack_get(&ct->master->ct_general); - NF_CT_STAT_INC(expect_new); + NF_CT_STAT_INC(net, expect_new); } else { struct nf_conntrack_helper *helper; @@ -589,11 +589,12 @@ init_conntrack(const struct nf_conntrack_tuple *tuple, if (help) rcu_assign_pointer(help->helper, helper); } - NF_CT_STAT_INC(new); + NF_CT_STAT_INC(net, new); } /* Overload tuple linked list to put us in unconfirmed list. */ - hlist_add_head(&ct->tuplehash[IP_CT_DIR_ORIGINAL].hnode, &unconfirmed); + hlist_add_head(&ct->tuplehash[IP_CT_DIR_ORIGINAL].hnode, + &net->ct.unconfirmed); spin_unlock_bh(&nf_conntrack_lock); @@ -608,7 +609,8 @@ init_conntrack(const struct nf_conntrack_tuple *tuple, /* On success, returns conntrack ptr, sets skb->nfct and ctinfo */ static inline struct nf_conn * -resolve_normal_ct(struct sk_buff *skb, +resolve_normal_ct(struct net *net, + struct sk_buff *skb, unsigned int dataoff, u_int16_t l3num, u_int8_t protonum, @@ -629,9 +631,9 @@ resolve_normal_ct(struct sk_buff *skb, } /* look for tuple match */ - h = nf_conntrack_find_get(&tuple); + h = nf_conntrack_find_get(net, &tuple); if (!h) { - h = init_conntrack(&tuple, l3proto, l4proto, skb, dataoff); + h = init_conntrack(net, &tuple, l3proto, l4proto, skb, dataoff); if (!h) return NULL; if (IS_ERR(h)) @@ -665,7 +667,8 @@ resolve_normal_ct(struct sk_buff *skb, } unsigned int -nf_conntrack_in(int pf, unsigned int hooknum, struct sk_buff *skb) +nf_conntrack_in(struct net *net, u_int8_t pf, unsigned int hooknum, + struct sk_buff *skb) { struct nf_conn *ct; enum ip_conntrack_info ctinfo; @@ -678,44 +681,46 @@ nf_conntrack_in(int pf, unsigned int hooknum, struct sk_buff *skb) /* Previously seen (loopback or untracked)? Ignore. */ if (skb->nfct) { - NF_CT_STAT_INC_ATOMIC(ignore); + NF_CT_STAT_INC_ATOMIC(net, ignore); return NF_ACCEPT; } /* rcu_read_lock()ed by nf_hook_slow */ - l3proto = __nf_ct_l3proto_find((u_int16_t)pf); + l3proto = __nf_ct_l3proto_find(pf); ret = l3proto->get_l4proto(skb, skb_network_offset(skb), &dataoff, &protonum); if (ret <= 0) { pr_debug("not prepared to track yet or error occured\n"); - NF_CT_STAT_INC_ATOMIC(error); - NF_CT_STAT_INC_ATOMIC(invalid); + NF_CT_STAT_INC_ATOMIC(net, error); + NF_CT_STAT_INC_ATOMIC(net, invalid); return -ret; } - l4proto = __nf_ct_l4proto_find((u_int16_t)pf, protonum); + l4proto = __nf_ct_l4proto_find(pf, protonum); /* It may be an special packet, error, unclean... * inverse of the return code tells to the netfilter * core what to do with the packet. */ - if (l4proto->error != NULL && - (ret = l4proto->error(skb, dataoff, &ctinfo, pf, hooknum)) <= 0) { - NF_CT_STAT_INC_ATOMIC(error); - NF_CT_STAT_INC_ATOMIC(invalid); - return -ret; + if (l4proto->error != NULL) { + ret = l4proto->error(net, skb, dataoff, &ctinfo, pf, hooknum); + if (ret <= 0) { + NF_CT_STAT_INC_ATOMIC(net, error); + NF_CT_STAT_INC_ATOMIC(net, invalid); + return -ret; + } } - ct = resolve_normal_ct(skb, dataoff, pf, protonum, l3proto, l4proto, - &set_reply, &ctinfo); + ct = resolve_normal_ct(net, skb, dataoff, pf, protonum, + l3proto, l4proto, &set_reply, &ctinfo); if (!ct) { /* Not valid part of a connection */ - NF_CT_STAT_INC_ATOMIC(invalid); + NF_CT_STAT_INC_ATOMIC(net, invalid); return NF_ACCEPT; } if (IS_ERR(ct)) { /* Too stressed to deal. */ - NF_CT_STAT_INC_ATOMIC(drop); + NF_CT_STAT_INC_ATOMIC(net, drop); return NF_DROP; } @@ -728,12 +733,12 @@ nf_conntrack_in(int pf, unsigned int hooknum, struct sk_buff *skb) pr_debug("nf_conntrack_in: Can't track with proto module\n"); nf_conntrack_put(skb->nfct); skb->nfct = NULL; - NF_CT_STAT_INC_ATOMIC(invalid); + NF_CT_STAT_INC_ATOMIC(net, invalid); return -ret; } if (set_reply && !test_and_set_bit(IPS_SEEN_REPLY_BIT, &ct->status)) - nf_conntrack_event_cache(IPCT_STATUS, skb); + nf_conntrack_event_cache(IPCT_STATUS, ct); return ret; } @@ -846,7 +851,7 @@ acct: /* must be unlocked when calling event cache */ if (event) - nf_conntrack_event_cache(event, skb); + nf_conntrack_event_cache(event, ct); } EXPORT_SYMBOL_GPL(__nf_ct_refresh_acct); @@ -938,7 +943,7 @@ static void nf_conntrack_attach(struct sk_buff *nskb, struct sk_buff *skb) /* Bring out ya dead! */ static struct nf_conn * -get_next_corpse(int (*iter)(struct nf_conn *i, void *data), +get_next_corpse(struct net *net, int (*iter)(struct nf_conn *i, void *data), void *data, unsigned int *bucket) { struct nf_conntrack_tuple_hash *h; @@ -947,13 +952,13 @@ get_next_corpse(int (*iter)(struct nf_conn *i, void *data), spin_lock_bh(&nf_conntrack_lock); for (; *bucket < nf_conntrack_htable_size; (*bucket)++) { - hlist_for_each_entry(h, n, &nf_conntrack_hash[*bucket], hnode) { + hlist_for_each_entry(h, n, &net->ct.hash[*bucket], hnode) { ct = nf_ct_tuplehash_to_ctrack(h); if (iter(ct, data)) goto found; } } - hlist_for_each_entry(h, n, &unconfirmed, hnode) { + hlist_for_each_entry(h, n, &net->ct.unconfirmed, hnode) { ct = nf_ct_tuplehash_to_ctrack(h); if (iter(ct, data)) set_bit(IPS_DYING_BIT, &ct->status); @@ -966,13 +971,14 @@ found: return ct; } -void -nf_ct_iterate_cleanup(int (*iter)(struct nf_conn *i, void *data), void *data) +void nf_ct_iterate_cleanup(struct net *net, + int (*iter)(struct nf_conn *i, void *data), + void *data) { struct nf_conn *ct; unsigned int bucket = 0; - while ((ct = get_next_corpse(iter, data, &bucket)) != NULL) { + while ((ct = get_next_corpse(net, iter, data, &bucket)) != NULL) { /* Time to push up daises... */ if (del_timer(&ct->timeout)) death_by_timeout((unsigned long)ct); @@ -998,27 +1004,26 @@ void nf_ct_free_hashtable(struct hlist_head *hash, int vmalloced, unsigned int s } EXPORT_SYMBOL_GPL(nf_ct_free_hashtable); -void nf_conntrack_flush(void) +void nf_conntrack_flush(struct net *net) { - nf_ct_iterate_cleanup(kill_all, NULL); + nf_ct_iterate_cleanup(net, kill_all, NULL); } EXPORT_SYMBOL_GPL(nf_conntrack_flush); -/* Mishearing the voices in his head, our hero wonders how he's - supposed to kill the mall. */ -void nf_conntrack_cleanup(void) +static void nf_conntrack_cleanup_init_net(void) { - rcu_assign_pointer(ip_ct_attach, NULL); - - /* This makes sure all current packets have passed through - netfilter framework. Roll on, two-stage module - delete... */ - synchronize_net(); + nf_conntrack_helper_fini(); + nf_conntrack_proto_fini(); + kmem_cache_destroy(nf_conntrack_cachep); +} - nf_ct_event_cache_flush(); +static void nf_conntrack_cleanup_net(struct net *net) +{ + nf_ct_event_cache_flush(net); + nf_conntrack_ecache_fini(net); i_see_dead_people: - nf_conntrack_flush(); - if (atomic_read(&nf_conntrack_count) != 0) { + nf_conntrack_flush(net); + if (atomic_read(&net->ct.count) != 0) { schedule(); goto i_see_dead_people; } @@ -1026,16 +1031,31 @@ void nf_conntrack_cleanup(void) while (atomic_read(&nf_conntrack_untracked.ct_general.use) > 1) schedule(); - rcu_assign_pointer(nf_ct_destroy, NULL); - - kmem_cache_destroy(nf_conntrack_cachep); - nf_ct_free_hashtable(nf_conntrack_hash, nf_conntrack_vmalloc, + nf_ct_free_hashtable(net->ct.hash, net->ct.hash_vmalloc, nf_conntrack_htable_size); + nf_conntrack_acct_fini(net); + nf_conntrack_expect_fini(net); + free_percpu(net->ct.stat); +} - nf_conntrack_acct_fini(); - nf_conntrack_expect_fini(); - nf_conntrack_helper_fini(); - nf_conntrack_proto_fini(); +/* Mishearing the voices in his head, our hero wonders how he's + supposed to kill the mall. */ +void nf_conntrack_cleanup(struct net *net) +{ + if (net_eq(net, &init_net)) + rcu_assign_pointer(ip_ct_attach, NULL); + + /* This makes sure all current packets have passed through + netfilter framework. Roll on, two-stage module + delete... */ + synchronize_net(); + + nf_conntrack_cleanup_net(net); + + if (net_eq(net, &init_net)) { + rcu_assign_pointer(nf_ct_destroy, NULL); + nf_conntrack_cleanup_init_net(); + } } struct hlist_head *nf_ct_alloc_hashtable(unsigned int *sizep, int *vmalloced) @@ -1094,8 +1114,8 @@ int nf_conntrack_set_hashsize(const char *val, struct kernel_param *kp) */ spin_lock_bh(&nf_conntrack_lock); for (i = 0; i < nf_conntrack_htable_size; i++) { - while (!hlist_empty(&nf_conntrack_hash[i])) { - h = hlist_entry(nf_conntrack_hash[i].first, + while (!hlist_empty(&init_net.ct.hash[i])) { + h = hlist_entry(init_net.ct.hash[i].first, struct nf_conntrack_tuple_hash, hnode); hlist_del_rcu(&h->hnode); bucket = __hash_conntrack(&h->tuple, hashsize, rnd); @@ -1103,12 +1123,12 @@ int nf_conntrack_set_hashsize(const char *val, struct kernel_param *kp) } } old_size = nf_conntrack_htable_size; - old_vmalloced = nf_conntrack_vmalloc; - old_hash = nf_conntrack_hash; + old_vmalloced = init_net.ct.hash_vmalloc; + old_hash = init_net.ct.hash; nf_conntrack_htable_size = hashsize; - nf_conntrack_vmalloc = vmalloced; - nf_conntrack_hash = hash; + init_net.ct.hash_vmalloc = vmalloced; + init_net.ct.hash = hash; nf_conntrack_hash_rnd = rnd; spin_unlock_bh(&nf_conntrack_lock); @@ -1120,7 +1140,7 @@ EXPORT_SYMBOL_GPL(nf_conntrack_set_hashsize); module_param_call(hashsize, nf_conntrack_set_hashsize, param_get_uint, &nf_conntrack_htable_size, 0600); -int __init nf_conntrack_init(void) +static int nf_conntrack_init_init_net(void) { int max_factor = 8; int ret; @@ -1142,13 +1162,6 @@ int __init nf_conntrack_init(void) * entries. */ max_factor = 4; } - nf_conntrack_hash = nf_ct_alloc_hashtable(&nf_conntrack_htable_size, - &nf_conntrack_vmalloc); - if (!nf_conntrack_hash) { - printk(KERN_ERR "Unable to create nf_conntrack_hash\n"); - goto err_out; - } - nf_conntrack_max = max_factor * nf_conntrack_htable_size; printk("nf_conntrack version %s (%u buckets, %d max)\n", @@ -1160,48 +1173,103 @@ int __init nf_conntrack_init(void) 0, 0, NULL); if (!nf_conntrack_cachep) { printk(KERN_ERR "Unable to create nf_conn slab cache\n"); - goto err_free_hash; + ret = -ENOMEM; + goto err_cache; } ret = nf_conntrack_proto_init(); if (ret < 0) - goto err_free_conntrack_slab; - - ret = nf_conntrack_expect_init(); - if (ret < 0) - goto out_fini_proto; + goto err_proto; ret = nf_conntrack_helper_init(); if (ret < 0) - goto out_fini_expect; + goto err_helper; - ret = nf_conntrack_acct_init(); - if (ret < 0) - goto out_fini_helper; + return 0; - /* For use by REJECT target */ - rcu_assign_pointer(ip_ct_attach, nf_conntrack_attach); - rcu_assign_pointer(nf_ct_destroy, destroy_conntrack); +err_helper: + nf_conntrack_proto_fini(); +err_proto: + kmem_cache_destroy(nf_conntrack_cachep); +err_cache: + return ret; +} + +static int nf_conntrack_init_net(struct net *net) +{ + int ret; + + atomic_set(&net->ct.count, 0); + INIT_HLIST_HEAD(&net->ct.unconfirmed); + net->ct.stat = alloc_percpu(struct ip_conntrack_stat); + if (!net->ct.stat) { + ret = -ENOMEM; + goto err_stat; + } + ret = nf_conntrack_ecache_init(net); + if (ret < 0) + goto err_ecache; + net->ct.hash = nf_ct_alloc_hashtable(&nf_conntrack_htable_size, + &net->ct.hash_vmalloc); + if (!net->ct.hash) { + ret = -ENOMEM; + printk(KERN_ERR "Unable to create nf_conntrack_hash\n"); + goto err_hash; + } + ret = nf_conntrack_expect_init(net); + if (ret < 0) + goto err_expect; + ret = nf_conntrack_acct_init(net); + if (ret < 0) + goto err_acct; /* Set up fake conntrack: - to never be deleted, not in any hashes */ +#ifdef CONFIG_NET_NS + nf_conntrack_untracked.ct_net = &init_net; +#endif atomic_set(&nf_conntrack_untracked.ct_general.use, 1); /* - and look it like as a confirmed connection */ set_bit(IPS_CONFIRMED_BIT, &nf_conntrack_untracked.status); - return ret; + return 0; -out_fini_helper: - nf_conntrack_helper_fini(); -out_fini_expect: - nf_conntrack_expect_fini(); -out_fini_proto: - nf_conntrack_proto_fini(); -err_free_conntrack_slab: - kmem_cache_destroy(nf_conntrack_cachep); -err_free_hash: - nf_ct_free_hashtable(nf_conntrack_hash, nf_conntrack_vmalloc, +err_acct: + nf_conntrack_expect_fini(net); +err_expect: + nf_ct_free_hashtable(net->ct.hash, net->ct.hash_vmalloc, nf_conntrack_htable_size); -err_out: - return -ENOMEM; +err_hash: + nf_conntrack_ecache_fini(net); +err_ecache: + free_percpu(net->ct.stat); +err_stat: + return ret; +} + +int nf_conntrack_init(struct net *net) +{ + int ret; + + if (net_eq(net, &init_net)) { + ret = nf_conntrack_init_init_net(); + if (ret < 0) + goto out_init_net; + } + ret = nf_conntrack_init_net(net); + if (ret < 0) + goto out_net; + + if (net_eq(net, &init_net)) { + /* For use by REJECT target */ + rcu_assign_pointer(ip_ct_attach, nf_conntrack_attach); + rcu_assign_pointer(nf_ct_destroy, destroy_conntrack); + } + return 0; + +out_net: + if (net_eq(net, &init_net)) + nf_conntrack_cleanup_init_net(); +out_init_net: + return ret; } diff --git a/net/netfilter/nf_conntrack_ecache.c b/net/netfilter/nf_conntrack_ecache.c index 83c41ac3505b..a5f5e2e65d13 100644 --- a/net/netfilter/nf_conntrack_ecache.c +++ b/net/netfilter/nf_conntrack_ecache.c @@ -29,9 +29,6 @@ EXPORT_SYMBOL_GPL(nf_conntrack_chain); ATOMIC_NOTIFIER_HEAD(nf_ct_expect_chain); EXPORT_SYMBOL_GPL(nf_ct_expect_chain); -DEFINE_PER_CPU(struct nf_conntrack_ecache, nf_conntrack_ecache); -EXPORT_PER_CPU_SYMBOL_GPL(nf_conntrack_ecache); - /* deliver cached events and clear cache entry - must be called with locally * disabled softirqs */ static inline void @@ -51,10 +48,11 @@ __nf_ct_deliver_cached_events(struct nf_conntrack_ecache *ecache) * by code prior to async packet handling for freeing the skb */ void nf_ct_deliver_cached_events(const struct nf_conn *ct) { + struct net *net = nf_ct_net(ct); struct nf_conntrack_ecache *ecache; local_bh_disable(); - ecache = &__get_cpu_var(nf_conntrack_ecache); + ecache = per_cpu_ptr(net->ct.ecache, raw_smp_processor_id()); if (ecache->ct == ct) __nf_ct_deliver_cached_events(ecache); local_bh_enable(); @@ -64,10 +62,11 @@ EXPORT_SYMBOL_GPL(nf_ct_deliver_cached_events); /* Deliver cached events for old pending events, if current conntrack != old */ void __nf_ct_event_cache_init(struct nf_conn *ct) { + struct net *net = nf_ct_net(ct); struct nf_conntrack_ecache *ecache; /* take care of delivering potentially old events */ - ecache = &__get_cpu_var(nf_conntrack_ecache); + ecache = per_cpu_ptr(net->ct.ecache, raw_smp_processor_id()); BUG_ON(ecache->ct == ct); if (ecache->ct) __nf_ct_deliver_cached_events(ecache); @@ -79,18 +78,31 @@ EXPORT_SYMBOL_GPL(__nf_ct_event_cache_init); /* flush the event cache - touches other CPU's data and must not be called * while packets are still passing through the code */ -void nf_ct_event_cache_flush(void) +void nf_ct_event_cache_flush(struct net *net) { struct nf_conntrack_ecache *ecache; int cpu; for_each_possible_cpu(cpu) { - ecache = &per_cpu(nf_conntrack_ecache, cpu); + ecache = per_cpu_ptr(net->ct.ecache, cpu); if (ecache->ct) nf_ct_put(ecache->ct); } } +int nf_conntrack_ecache_init(struct net *net) +{ + net->ct.ecache = alloc_percpu(struct nf_conntrack_ecache); + if (!net->ct.ecache) + return -ENOMEM; + return 0; +} + +void nf_conntrack_ecache_fini(struct net *net) +{ + free_percpu(net->ct.ecache); +} + int nf_conntrack_register_notifier(struct notifier_block *nb) { return atomic_notifier_chain_register(&nf_conntrack_chain, nb); diff --git a/net/netfilter/nf_conntrack_expect.c b/net/netfilter/nf_conntrack_expect.c index e8f0dead267f..37a703bc3b8e 100644 --- a/net/netfilter/nf_conntrack_expect.c +++ b/net/netfilter/nf_conntrack_expect.c @@ -28,17 +28,12 @@ #include <net/netfilter/nf_conntrack_helper.h> #include <net/netfilter/nf_conntrack_tuple.h> -struct hlist_head *nf_ct_expect_hash __read_mostly; -EXPORT_SYMBOL_GPL(nf_ct_expect_hash); - unsigned int nf_ct_expect_hsize __read_mostly; EXPORT_SYMBOL_GPL(nf_ct_expect_hsize); static unsigned int nf_ct_expect_hash_rnd __read_mostly; -static unsigned int nf_ct_expect_count; unsigned int nf_ct_expect_max __read_mostly; static int nf_ct_expect_hash_rnd_initted __read_mostly; -static int nf_ct_expect_vmalloc; static struct kmem_cache *nf_ct_expect_cachep __read_mostly; @@ -46,18 +41,19 @@ static struct kmem_cache *nf_ct_expect_cachep __read_mostly; void nf_ct_unlink_expect(struct nf_conntrack_expect *exp) { struct nf_conn_help *master_help = nfct_help(exp->master); + struct net *net = nf_ct_exp_net(exp); NF_CT_ASSERT(master_help); NF_CT_ASSERT(!timer_pending(&exp->timeout)); hlist_del_rcu(&exp->hnode); - nf_ct_expect_count--; + net->ct.expect_count--; hlist_del(&exp->lnode); master_help->expecting[exp->class]--; nf_ct_expect_put(exp); - NF_CT_STAT_INC(expect_delete); + NF_CT_STAT_INC(net, expect_delete); } EXPORT_SYMBOL_GPL(nf_ct_unlink_expect); @@ -87,17 +83,17 @@ static unsigned int nf_ct_expect_dst_hash(const struct nf_conntrack_tuple *tuple } struct nf_conntrack_expect * -__nf_ct_expect_find(const struct nf_conntrack_tuple *tuple) +__nf_ct_expect_find(struct net *net, const struct nf_conntrack_tuple *tuple) { struct nf_conntrack_expect *i; struct hlist_node *n; unsigned int h; - if (!nf_ct_expect_count) + if (!net->ct.expect_count) return NULL; h = nf_ct_expect_dst_hash(tuple); - hlist_for_each_entry_rcu(i, n, &nf_ct_expect_hash[h], hnode) { + hlist_for_each_entry_rcu(i, n, &net->ct.expect_hash[h], hnode) { if (nf_ct_tuple_mask_cmp(tuple, &i->tuple, &i->mask)) return i; } @@ -107,12 +103,12 @@ EXPORT_SYMBOL_GPL(__nf_ct_expect_find); /* Just find a expectation corresponding to a tuple. */ struct nf_conntrack_expect * -nf_ct_expect_find_get(const struct nf_conntrack_tuple *tuple) +nf_ct_expect_find_get(struct net *net, const struct nf_conntrack_tuple *tuple) { struct nf_conntrack_expect *i; rcu_read_lock(); - i = __nf_ct_expect_find(tuple); + i = __nf_ct_expect_find(net, tuple); if (i && !atomic_inc_not_zero(&i->use)) i = NULL; rcu_read_unlock(); @@ -124,17 +120,17 @@ EXPORT_SYMBOL_GPL(nf_ct_expect_find_get); /* If an expectation for this connection is found, it gets delete from * global list then returned. */ struct nf_conntrack_expect * -nf_ct_find_expectation(const struct nf_conntrack_tuple *tuple) +nf_ct_find_expectation(struct net *net, const struct nf_conntrack_tuple *tuple) { struct nf_conntrack_expect *i, *exp = NULL; struct hlist_node *n; unsigned int h; - if (!nf_ct_expect_count) + if (!net->ct.expect_count) return NULL; h = nf_ct_expect_dst_hash(tuple); - hlist_for_each_entry(i, n, &nf_ct_expect_hash[h], hnode) { + hlist_for_each_entry(i, n, &net->ct.expect_hash[h], hnode) { if (!(i->flags & NF_CT_EXPECT_INACTIVE) && nf_ct_tuple_mask_cmp(tuple, &i->tuple, &i->mask)) { exp = i; @@ -241,7 +237,7 @@ struct nf_conntrack_expect *nf_ct_expect_alloc(struct nf_conn *me) EXPORT_SYMBOL_GPL(nf_ct_expect_alloc); void nf_ct_expect_init(struct nf_conntrack_expect *exp, unsigned int class, - int family, + u_int8_t family, const union nf_inet_addr *saddr, const union nf_inet_addr *daddr, u_int8_t proto, const __be16 *src, const __be16 *dst) @@ -311,6 +307,7 @@ EXPORT_SYMBOL_GPL(nf_ct_expect_put); static void nf_ct_expect_insert(struct nf_conntrack_expect *exp) { struct nf_conn_help *master_help = nfct_help(exp->master); + struct net *net = nf_ct_exp_net(exp); const struct nf_conntrack_expect_policy *p; unsigned int h = nf_ct_expect_dst_hash(&exp->tuple); @@ -319,8 +316,8 @@ static void nf_ct_expect_insert(struct nf_conntrack_expect *exp) hlist_add_head(&exp->lnode, &master_help->expectations); master_help->expecting[exp->class]++; - hlist_add_head_rcu(&exp->hnode, &nf_ct_expect_hash[h]); - nf_ct_expect_count++; + hlist_add_head_rcu(&exp->hnode, &net->ct.expect_hash[h]); + net->ct.expect_count++; setup_timer(&exp->timeout, nf_ct_expectation_timed_out, (unsigned long)exp); @@ -329,7 +326,7 @@ static void nf_ct_expect_insert(struct nf_conntrack_expect *exp) add_timer(&exp->timeout); atomic_inc(&exp->use); - NF_CT_STAT_INC(expect_create); + NF_CT_STAT_INC(net, expect_create); } /* Race with expectations being used means we could have none to find; OK. */ @@ -371,6 +368,7 @@ int nf_ct_expect_related(struct nf_conntrack_expect *expect) struct nf_conntrack_expect *i; struct nf_conn *master = expect->master; struct nf_conn_help *master_help = nfct_help(master); + struct net *net = nf_ct_exp_net(expect); struct hlist_node *n; unsigned int h; int ret; @@ -383,7 +381,7 @@ int nf_ct_expect_related(struct nf_conntrack_expect *expect) goto out; } h = nf_ct_expect_dst_hash(&expect->tuple); - hlist_for_each_entry(i, n, &nf_ct_expect_hash[h], hnode) { + hlist_for_each_entry(i, n, &net->ct.expect_hash[h], hnode) { if (expect_matches(i, expect)) { /* Refresh timer: if it's dying, ignore.. */ if (refresh_timer(i)) { @@ -406,7 +404,7 @@ int nf_ct_expect_related(struct nf_conntrack_expect *expect) } } - if (nf_ct_expect_count >= nf_ct_expect_max) { + if (net->ct.expect_count >= nf_ct_expect_max) { if (net_ratelimit()) printk(KERN_WARNING "nf_conntrack: expectation table full\n"); @@ -425,16 +423,18 @@ EXPORT_SYMBOL_GPL(nf_ct_expect_related); #ifdef CONFIG_PROC_FS struct ct_expect_iter_state { + struct seq_net_private p; unsigned int bucket; }; static struct hlist_node *ct_expect_get_first(struct seq_file *seq) { + struct net *net = seq_file_net(seq); struct ct_expect_iter_state *st = seq->private; struct hlist_node *n; for (st->bucket = 0; st->bucket < nf_ct_expect_hsize; st->bucket++) { - n = rcu_dereference(nf_ct_expect_hash[st->bucket].first); + n = rcu_dereference(net->ct.expect_hash[st->bucket].first); if (n) return n; } @@ -444,13 +444,14 @@ static struct hlist_node *ct_expect_get_first(struct seq_file *seq) static struct hlist_node *ct_expect_get_next(struct seq_file *seq, struct hlist_node *head) { + struct net *net = seq_file_net(seq); struct ct_expect_iter_state *st = seq->private; head = rcu_dereference(head->next); while (head == NULL) { if (++st->bucket >= nf_ct_expect_hsize) return NULL; - head = rcu_dereference(nf_ct_expect_hash[st->bucket].first); + head = rcu_dereference(net->ct.expect_hash[st->bucket].first); } return head; } @@ -524,7 +525,7 @@ static const struct seq_operations exp_seq_ops = { static int exp_open(struct inode *inode, struct file *file) { - return seq_open_private(file, &exp_seq_ops, + return seq_open_net(inode, file, &exp_seq_ops, sizeof(struct ct_expect_iter_state)); } @@ -533,72 +534,79 @@ static const struct file_operations exp_file_ops = { .open = exp_open, .read = seq_read, .llseek = seq_lseek, - .release = seq_release_private, + .release = seq_release_net, }; #endif /* CONFIG_PROC_FS */ -static int __init exp_proc_init(void) +static int exp_proc_init(struct net *net) { #ifdef CONFIG_PROC_FS struct proc_dir_entry *proc; - proc = proc_net_fops_create(&init_net, "nf_conntrack_expect", 0440, &exp_file_ops); + proc = proc_net_fops_create(net, "nf_conntrack_expect", 0440, &exp_file_ops); if (!proc) return -ENOMEM; #endif /* CONFIG_PROC_FS */ return 0; } -static void exp_proc_remove(void) +static void exp_proc_remove(struct net *net) { #ifdef CONFIG_PROC_FS - proc_net_remove(&init_net, "nf_conntrack_expect"); + proc_net_remove(net, "nf_conntrack_expect"); #endif /* CONFIG_PROC_FS */ } module_param_named(expect_hashsize, nf_ct_expect_hsize, uint, 0600); -int __init nf_conntrack_expect_init(void) +int nf_conntrack_expect_init(struct net *net) { int err = -ENOMEM; - if (!nf_ct_expect_hsize) { - nf_ct_expect_hsize = nf_conntrack_htable_size / 256; - if (!nf_ct_expect_hsize) - nf_ct_expect_hsize = 1; + if (net_eq(net, &init_net)) { + if (!nf_ct_expect_hsize) { + nf_ct_expect_hsize = nf_conntrack_htable_size / 256; + if (!nf_ct_expect_hsize) + nf_ct_expect_hsize = 1; + } + nf_ct_expect_max = nf_ct_expect_hsize * 4; } - nf_ct_expect_max = nf_ct_expect_hsize * 4; - nf_ct_expect_hash = nf_ct_alloc_hashtable(&nf_ct_expect_hsize, - &nf_ct_expect_vmalloc); - if (nf_ct_expect_hash == NULL) + net->ct.expect_count = 0; + net->ct.expect_hash = nf_ct_alloc_hashtable(&nf_ct_expect_hsize, + &net->ct.expect_vmalloc); + if (net->ct.expect_hash == NULL) goto err1; - nf_ct_expect_cachep = kmem_cache_create("nf_conntrack_expect", + if (net_eq(net, &init_net)) { + nf_ct_expect_cachep = kmem_cache_create("nf_conntrack_expect", sizeof(struct nf_conntrack_expect), 0, 0, NULL); - if (!nf_ct_expect_cachep) - goto err2; + if (!nf_ct_expect_cachep) + goto err2; + } - err = exp_proc_init(); + err = exp_proc_init(net); if (err < 0) goto err3; return 0; err3: - kmem_cache_destroy(nf_ct_expect_cachep); + if (net_eq(net, &init_net)) + kmem_cache_destroy(nf_ct_expect_cachep); err2: - nf_ct_free_hashtable(nf_ct_expect_hash, nf_ct_expect_vmalloc, + nf_ct_free_hashtable(net->ct.expect_hash, net->ct.expect_vmalloc, nf_ct_expect_hsize); err1: return err; } -void nf_conntrack_expect_fini(void) +void nf_conntrack_expect_fini(struct net *net) { - exp_proc_remove(); - kmem_cache_destroy(nf_ct_expect_cachep); - nf_ct_free_hashtable(nf_ct_expect_hash, nf_ct_expect_vmalloc, + exp_proc_remove(net); + if (net_eq(net, &init_net)) + kmem_cache_destroy(nf_ct_expect_cachep); + nf_ct_free_hashtable(net->ct.expect_hash, net->ct.expect_vmalloc, nf_ct_expect_hsize); } diff --git a/net/netfilter/nf_conntrack_ftp.c b/net/netfilter/nf_conntrack_ftp.c index bb20672fe036..4f7107107e99 100644 --- a/net/netfilter/nf_conntrack_ftp.c +++ b/net/netfilter/nf_conntrack_ftp.c @@ -318,7 +318,8 @@ static int find_nl_seq(u32 seq, const struct nf_ct_ftp_master *info, int dir) } /* We don't update if it's older than what we have. */ -static void update_nl_seq(u32 nl_seq, struct nf_ct_ftp_master *info, int dir, +static void update_nl_seq(struct nf_conn *ct, u32 nl_seq, + struct nf_ct_ftp_master *info, int dir, struct sk_buff *skb) { unsigned int i, oldest = NUM_SEQ_TO_REMEMBER; @@ -336,11 +337,11 @@ static void update_nl_seq(u32 nl_seq, struct nf_ct_ftp_master *info, int dir, if (info->seq_aft_nl_num[dir] < NUM_SEQ_TO_REMEMBER) { info->seq_aft_nl[dir][info->seq_aft_nl_num[dir]++] = nl_seq; - nf_conntrack_event_cache(IPCT_HELPINFO_VOLATILE, skb); + nf_conntrack_event_cache(IPCT_HELPINFO_VOLATILE, ct); } else if (oldest != NUM_SEQ_TO_REMEMBER && after(nl_seq, info->seq_aft_nl[dir][oldest])) { info->seq_aft_nl[dir][oldest] = nl_seq; - nf_conntrack_event_cache(IPCT_HELPINFO_VOLATILE, skb); + nf_conntrack_event_cache(IPCT_HELPINFO_VOLATILE, ct); } } @@ -509,7 +510,7 @@ out_update_nl: /* Now if this ends in \n, update ftp info. Seq may have been * adjusted by NAT code. */ if (ends_in_nl) - update_nl_seq(seq, ct_ftp_info, dir, skb); + update_nl_seq(ct, seq, ct_ftp_info, dir, skb); out: spin_unlock_bh(&nf_ftp_lock); return ret; diff --git a/net/netfilter/nf_conntrack_h323_main.c b/net/netfilter/nf_conntrack_h323_main.c index 2f83c158934d..c1504f71cdff 100644 --- a/net/netfilter/nf_conntrack_h323_main.c +++ b/net/netfilter/nf_conntrack_h323_main.c @@ -709,7 +709,8 @@ static int expect_h245(struct sk_buff *skb, struct nf_conn *ct, /* If the calling party is on the same side of the forward-to party, * we don't need to track the second call */ static int callforward_do_filter(const union nf_inet_addr *src, - const union nf_inet_addr *dst, int family) + const union nf_inet_addr *dst, + u_int8_t family) { const struct nf_afinfo *afinfo; struct flowi fl1, fl2; @@ -1209,6 +1210,7 @@ static struct nf_conntrack_expect *find_expect(struct nf_conn *ct, union nf_inet_addr *addr, __be16 port) { + struct net *net = nf_ct_net(ct); struct nf_conntrack_expect *exp; struct nf_conntrack_tuple tuple; @@ -1218,7 +1220,7 @@ static struct nf_conntrack_expect *find_expect(struct nf_conn *ct, tuple.dst.u.tcp.port = port; tuple.dst.protonum = IPPROTO_TCP; - exp = __nf_ct_expect_find(&tuple); + exp = __nf_ct_expect_find(net, &tuple); if (exp && exp->master == ct) return exp; return NULL; diff --git a/net/netfilter/nf_conntrack_helper.c b/net/netfilter/nf_conntrack_helper.c index 8e0b4c8f62a8..9c06b9f86ad4 100644 --- a/net/netfilter/nf_conntrack_helper.c +++ b/net/netfilter/nf_conntrack_helper.c @@ -123,29 +123,18 @@ int nf_conntrack_helper_register(struct nf_conntrack_helper *me) } EXPORT_SYMBOL_GPL(nf_conntrack_helper_register); -void nf_conntrack_helper_unregister(struct nf_conntrack_helper *me) +static void __nf_conntrack_helper_unregister(struct nf_conntrack_helper *me, + struct net *net) { struct nf_conntrack_tuple_hash *h; struct nf_conntrack_expect *exp; const struct hlist_node *n, *next; unsigned int i; - mutex_lock(&nf_ct_helper_mutex); - hlist_del_rcu(&me->hnode); - nf_ct_helper_count--; - mutex_unlock(&nf_ct_helper_mutex); - - /* Make sure every nothing is still using the helper unless its a - * connection in the hash. - */ - synchronize_rcu(); - - spin_lock_bh(&nf_conntrack_lock); - /* Get rid of expectations */ for (i = 0; i < nf_ct_expect_hsize; i++) { hlist_for_each_entry_safe(exp, n, next, - &nf_ct_expect_hash[i], hnode) { + &net->ct.expect_hash[i], hnode) { struct nf_conn_help *help = nfct_help(exp->master); if ((help->helper == me || exp->helper == me) && del_timer(&exp->timeout)) { @@ -156,12 +145,31 @@ void nf_conntrack_helper_unregister(struct nf_conntrack_helper *me) } /* Get rid of expecteds, set helpers to NULL. */ - hlist_for_each_entry(h, n, &unconfirmed, hnode) + hlist_for_each_entry(h, n, &net->ct.unconfirmed, hnode) unhelp(h, me); for (i = 0; i < nf_conntrack_htable_size; i++) { - hlist_for_each_entry(h, n, &nf_conntrack_hash[i], hnode) + hlist_for_each_entry(h, n, &net->ct.hash[i], hnode) unhelp(h, me); } +} + +void nf_conntrack_helper_unregister(struct nf_conntrack_helper *me) +{ + struct net *net; + + mutex_lock(&nf_ct_helper_mutex); + hlist_del_rcu(&me->hnode); + nf_ct_helper_count--; + mutex_unlock(&nf_ct_helper_mutex); + + /* Make sure every nothing is still using the helper unless its a + * connection in the hash. + */ + synchronize_rcu(); + + spin_lock_bh(&nf_conntrack_lock); + for_each_net(net) + __nf_conntrack_helper_unregister(me, net); spin_unlock_bh(&nf_conntrack_lock); } EXPORT_SYMBOL_GPL(nf_conntrack_helper_unregister); diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c index a8752031adcb..cadfd15b44f6 100644 --- a/net/netfilter/nf_conntrack_netlink.c +++ b/net/netfilter/nf_conntrack_netlink.c @@ -549,7 +549,7 @@ ctnetlink_dump_table(struct sk_buff *skb, struct netlink_callback *cb) last = (struct nf_conn *)cb->args[1]; for (; cb->args[0] < nf_conntrack_htable_size; cb->args[0]++) { restart: - hlist_for_each_entry_rcu(h, n, &nf_conntrack_hash[cb->args[0]], + hlist_for_each_entry_rcu(h, n, &init_net.ct.hash[cb->args[0]], hnode) { if (NF_CT_DIRECTION(h) != IP_CT_DIR_ORIGINAL) continue; @@ -794,14 +794,14 @@ ctnetlink_del_conntrack(struct sock *ctnl, struct sk_buff *skb, err = ctnetlink_parse_tuple(cda, &tuple, CTA_TUPLE_REPLY, u3); else { /* Flush the whole table */ - nf_conntrack_flush(); + nf_conntrack_flush(&init_net); return 0; } if (err < 0) return err; - h = nf_conntrack_find_get(&tuple); + h = nf_conntrack_find_get(&init_net, &tuple); if (!h) return -ENOENT; @@ -847,7 +847,7 @@ ctnetlink_get_conntrack(struct sock *ctnl, struct sk_buff *skb, if (err < 0) return err; - h = nf_conntrack_find_get(&tuple); + h = nf_conntrack_find_get(&init_net, &tuple); if (!h) return -ENOENT; @@ -1125,7 +1125,7 @@ ctnetlink_create_conntrack(struct nlattr *cda[], struct nf_conn_help *help; struct nf_conntrack_helper *helper; - ct = nf_conntrack_alloc(otuple, rtuple, GFP_KERNEL); + ct = nf_conntrack_alloc(&init_net, otuple, rtuple, GFP_KERNEL); if (ct == NULL || IS_ERR(ct)) return -ENOMEM; @@ -1213,9 +1213,9 @@ ctnetlink_new_conntrack(struct sock *ctnl, struct sk_buff *skb, spin_lock_bh(&nf_conntrack_lock); if (cda[CTA_TUPLE_ORIG]) - h = __nf_conntrack_find(&otuple); + h = __nf_conntrack_find(&init_net, &otuple); else if (cda[CTA_TUPLE_REPLY]) - h = __nf_conntrack_find(&rtuple); + h = __nf_conntrack_find(&init_net, &rtuple); if (h == NULL) { struct nf_conntrack_tuple master; @@ -1230,7 +1230,7 @@ ctnetlink_new_conntrack(struct sock *ctnl, struct sk_buff *skb, if (err < 0) goto out_unlock; - master_h = __nf_conntrack_find(&master); + master_h = __nf_conntrack_find(&init_net, &master); if (master_h == NULL) { err = -ENOENT; goto out_unlock; @@ -1458,6 +1458,7 @@ static int ctnetlink_exp_done(struct netlink_callback *cb) static int ctnetlink_exp_dump_table(struct sk_buff *skb, struct netlink_callback *cb) { + struct net *net = &init_net; struct nf_conntrack_expect *exp, *last; struct nfgenmsg *nfmsg = NLMSG_DATA(cb->nlh); struct hlist_node *n; @@ -1467,7 +1468,7 @@ ctnetlink_exp_dump_table(struct sk_buff *skb, struct netlink_callback *cb) last = (struct nf_conntrack_expect *)cb->args[1]; for (; cb->args[0] < nf_ct_expect_hsize; cb->args[0]++) { restart: - hlist_for_each_entry(exp, n, &nf_ct_expect_hash[cb->args[0]], + hlist_for_each_entry(exp, n, &net->ct.expect_hash[cb->args[0]], hnode) { if (l3proto && exp->tuple.src.l3num != l3proto) continue; @@ -1529,7 +1530,7 @@ ctnetlink_get_expect(struct sock *ctnl, struct sk_buff *skb, if (err < 0) return err; - exp = nf_ct_expect_find_get(&tuple); + exp = nf_ct_expect_find_get(&init_net, &tuple); if (!exp) return -ENOENT; @@ -1583,7 +1584,7 @@ ctnetlink_del_expect(struct sock *ctnl, struct sk_buff *skb, return err; /* bump usage count to 2 */ - exp = nf_ct_expect_find_get(&tuple); + exp = nf_ct_expect_find_get(&init_net, &tuple); if (!exp) return -ENOENT; @@ -1613,7 +1614,7 @@ ctnetlink_del_expect(struct sock *ctnl, struct sk_buff *skb, } for (i = 0; i < nf_ct_expect_hsize; i++) { hlist_for_each_entry_safe(exp, n, next, - &nf_ct_expect_hash[i], + &init_net.ct.expect_hash[i], hnode) { m_help = nfct_help(exp->master); if (m_help->helper == h @@ -1629,7 +1630,7 @@ ctnetlink_del_expect(struct sock *ctnl, struct sk_buff *skb, spin_lock_bh(&nf_conntrack_lock); for (i = 0; i < nf_ct_expect_hsize; i++) { hlist_for_each_entry_safe(exp, n, next, - &nf_ct_expect_hash[i], + &init_net.ct.expect_hash[i], hnode) { if (del_timer(&exp->timeout)) { nf_ct_unlink_expect(exp); @@ -1670,7 +1671,7 @@ ctnetlink_create_expect(struct nlattr *cda[], u_int8_t u3) return err; /* Look for master conntrack of this expectation */ - h = nf_conntrack_find_get(&master_tuple); + h = nf_conntrack_find_get(&init_net, &master_tuple); if (!h) return -ENOENT; ct = nf_ct_tuplehash_to_ctrack(h); @@ -1724,7 +1725,7 @@ ctnetlink_new_expect(struct sock *ctnl, struct sk_buff *skb, return err; spin_lock_bh(&nf_conntrack_lock); - exp = __nf_ct_expect_find(&tuple); + exp = __nf_ct_expect_find(&init_net, &tuple); if (!exp) { spin_unlock_bh(&nf_conntrack_lock); diff --git a/net/netfilter/nf_conntrack_pptp.c b/net/netfilter/nf_conntrack_pptp.c index 97e54b0e43a3..373e51e91ce5 100644 --- a/net/netfilter/nf_conntrack_pptp.c +++ b/net/netfilter/nf_conntrack_pptp.c @@ -98,6 +98,7 @@ EXPORT_SYMBOL(pptp_msg_name); static void pptp_expectfn(struct nf_conn *ct, struct nf_conntrack_expect *exp) { + struct net *net = nf_ct_net(ct); typeof(nf_nat_pptp_hook_expectfn) nf_nat_pptp_expectfn; pr_debug("increasing timeouts\n"); @@ -121,7 +122,7 @@ static void pptp_expectfn(struct nf_conn *ct, pr_debug("trying to unexpect other dir: "); nf_ct_dump_tuple(&inv_t); - exp_other = nf_ct_expect_find_get(&inv_t); + exp_other = nf_ct_expect_find_get(net, &inv_t); if (exp_other) { /* delete other expectation. */ pr_debug("found\n"); @@ -134,7 +135,8 @@ static void pptp_expectfn(struct nf_conn *ct, rcu_read_unlock(); } -static int destroy_sibling_or_exp(const struct nf_conntrack_tuple *t) +static int destroy_sibling_or_exp(struct net *net, + const struct nf_conntrack_tuple *t) { const struct nf_conntrack_tuple_hash *h; struct nf_conntrack_expect *exp; @@ -143,7 +145,7 @@ static int destroy_sibling_or_exp(const struct nf_conntrack_tuple *t) pr_debug("trying to timeout ct or exp for tuple "); nf_ct_dump_tuple(t); - h = nf_conntrack_find_get(t); + h = nf_conntrack_find_get(net, t); if (h) { sibling = nf_ct_tuplehash_to_ctrack(h); pr_debug("setting timeout of conntrack %p to 0\n", sibling); @@ -154,7 +156,7 @@ static int destroy_sibling_or_exp(const struct nf_conntrack_tuple *t) nf_ct_put(sibling); return 1; } else { - exp = nf_ct_expect_find_get(t); + exp = nf_ct_expect_find_get(net, t); if (exp) { pr_debug("unexpect_related of expect %p\n", exp); nf_ct_unexpect_related(exp); @@ -168,6 +170,7 @@ static int destroy_sibling_or_exp(const struct nf_conntrack_tuple *t) /* timeout GRE data connections */ static void pptp_destroy_siblings(struct nf_conn *ct) { + struct net *net = nf_ct_net(ct); const struct nf_conn_help *help = nfct_help(ct); struct nf_conntrack_tuple t; @@ -178,7 +181,7 @@ static void pptp_destroy_siblings(struct nf_conn *ct) t.dst.protonum = IPPROTO_GRE; t.src.u.gre.key = help->help.ct_pptp_info.pns_call_id; t.dst.u.gre.key = help->help.ct_pptp_info.pac_call_id; - if (!destroy_sibling_or_exp(&t)) + if (!destroy_sibling_or_exp(net, &t)) pr_debug("failed to timeout original pns->pac ct/exp\n"); /* try reply (pac->pns) tuple */ @@ -186,7 +189,7 @@ static void pptp_destroy_siblings(struct nf_conn *ct) t.dst.protonum = IPPROTO_GRE; t.src.u.gre.key = help->help.ct_pptp_info.pac_call_id; t.dst.u.gre.key = help->help.ct_pptp_info.pns_call_id; - if (!destroy_sibling_or_exp(&t)) + if (!destroy_sibling_or_exp(net, &t)) pr_debug("failed to timeout reply pac->pns ct/exp\n"); } @@ -594,15 +597,32 @@ static struct nf_conntrack_helper pptp __read_mostly = { .expect_policy = &pptp_exp_policy, }; +static void nf_conntrack_pptp_net_exit(struct net *net) +{ + nf_ct_gre_keymap_flush(net); +} + +static struct pernet_operations nf_conntrack_pptp_net_ops = { + .exit = nf_conntrack_pptp_net_exit, +}; + static int __init nf_conntrack_pptp_init(void) { - return nf_conntrack_helper_register(&pptp); + int rv; + + rv = nf_conntrack_helper_register(&pptp); + if (rv < 0) + return rv; + rv = register_pernet_subsys(&nf_conntrack_pptp_net_ops); + if (rv < 0) + nf_conntrack_helper_unregister(&pptp); + return rv; } static void __exit nf_conntrack_pptp_fini(void) { nf_conntrack_helper_unregister(&pptp); - nf_ct_gre_keymap_flush(); + unregister_pernet_subsys(&nf_conntrack_pptp_net_ops); } module_init(nf_conntrack_pptp_init); diff --git a/net/netfilter/nf_conntrack_proto.c b/net/netfilter/nf_conntrack_proto.c index a49fc932629b..a59a307e685d 100644 --- a/net/netfilter/nf_conntrack_proto.c +++ b/net/netfilter/nf_conntrack_proto.c @@ -207,6 +207,8 @@ EXPORT_SYMBOL_GPL(nf_conntrack_l3proto_register); void nf_conntrack_l3proto_unregister(struct nf_conntrack_l3proto *proto) { + struct net *net; + BUG_ON(proto->l3proto >= AF_MAX); mutex_lock(&nf_ct_proto_mutex); @@ -219,7 +221,8 @@ void nf_conntrack_l3proto_unregister(struct nf_conntrack_l3proto *proto) synchronize_rcu(); /* Remove all contrack entries for this protocol */ - nf_ct_iterate_cleanup(kill_l3proto, proto); + for_each_net(net) + nf_ct_iterate_cleanup(net, kill_l3proto, proto); } EXPORT_SYMBOL_GPL(nf_conntrack_l3proto_unregister); @@ -316,6 +319,8 @@ EXPORT_SYMBOL_GPL(nf_conntrack_l4proto_register); void nf_conntrack_l4proto_unregister(struct nf_conntrack_l4proto *l4proto) { + struct net *net; + BUG_ON(l4proto->l3proto >= PF_MAX); mutex_lock(&nf_ct_proto_mutex); @@ -328,7 +333,8 @@ void nf_conntrack_l4proto_unregister(struct nf_conntrack_l4proto *l4proto) synchronize_rcu(); /* Remove all contrack entries for this protocol */ - nf_ct_iterate_cleanup(kill_l4proto, l4proto); + for_each_net(net) + nf_ct_iterate_cleanup(net, kill_l4proto, l4proto); } EXPORT_SYMBOL_GPL(nf_conntrack_l4proto_unregister); diff --git a/net/netfilter/nf_conntrack_proto_dccp.c b/net/netfilter/nf_conntrack_proto_dccp.c index e7866dd3cde6..8fcf1762fabf 100644 --- a/net/netfilter/nf_conntrack_proto_dccp.c +++ b/net/netfilter/nf_conntrack_proto_dccp.c @@ -418,6 +418,7 @@ static bool dccp_invert_tuple(struct nf_conntrack_tuple *inv, static bool dccp_new(struct nf_conn *ct, const struct sk_buff *skb, unsigned int dataoff) { + struct net *net = nf_ct_net(ct); struct dccp_hdr _dh, *dh; const char *msg; u_int8_t state; @@ -445,7 +446,7 @@ static bool dccp_new(struct nf_conn *ct, const struct sk_buff *skb, return true; out_invalid: - if (LOG_INVALID(IPPROTO_DCCP)) + if (LOG_INVALID(net, IPPROTO_DCCP)) nf_log_packet(nf_ct_l3num(ct), 0, skb, NULL, NULL, NULL, msg); return false; } @@ -461,8 +462,9 @@ static u64 dccp_ack_seq(const struct dccp_hdr *dh) static int dccp_packet(struct nf_conn *ct, const struct sk_buff *skb, unsigned int dataoff, enum ip_conntrack_info ctinfo, - int pf, unsigned int hooknum) + u_int8_t pf, unsigned int hooknum) { + struct net *net = nf_ct_net(ct); enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo); struct dccp_hdr _dh, *dh; u_int8_t type, old_state, new_state; @@ -524,13 +526,13 @@ static int dccp_packet(struct nf_conn *ct, const struct sk_buff *skb, ct->proto.dccp.last_pkt = type; write_unlock_bh(&dccp_lock); - if (LOG_INVALID(IPPROTO_DCCP)) + if (LOG_INVALID(net, IPPROTO_DCCP)) nf_log_packet(pf, 0, skb, NULL, NULL, NULL, "nf_ct_dccp: invalid packet ignored "); return NF_ACCEPT; case CT_DCCP_INVALID: write_unlock_bh(&dccp_lock); - if (LOG_INVALID(IPPROTO_DCCP)) + if (LOG_INVALID(net, IPPROTO_DCCP)) nf_log_packet(pf, 0, skb, NULL, NULL, NULL, "nf_ct_dccp: invalid state transition "); return -NF_ACCEPT; @@ -545,9 +547,9 @@ static int dccp_packet(struct nf_conn *ct, const struct sk_buff *skb, return NF_ACCEPT; } -static int dccp_error(struct sk_buff *skb, unsigned int dataoff, - enum ip_conntrack_info *ctinfo, int pf, - unsigned int hooknum) +static int dccp_error(struct net *net, struct sk_buff *skb, + unsigned int dataoff, enum ip_conntrack_info *ctinfo, + u_int8_t pf, unsigned int hooknum) { struct dccp_hdr _dh, *dh; unsigned int dccp_len = skb->len - dataoff; @@ -575,7 +577,7 @@ static int dccp_error(struct sk_buff *skb, unsigned int dataoff, } } - if (nf_conntrack_checksum && hooknum == NF_INET_PRE_ROUTING && + if (net->ct.sysctl_checksum && hooknum == NF_INET_PRE_ROUTING && nf_checksum_partial(skb, hooknum, dataoff, cscov, IPPROTO_DCCP, pf)) { msg = "nf_ct_dccp: bad checksum "; @@ -590,7 +592,7 @@ static int dccp_error(struct sk_buff *skb, unsigned int dataoff, return NF_ACCEPT; out_invalid: - if (LOG_INVALID(IPPROTO_DCCP)) + if (LOG_INVALID(net, IPPROTO_DCCP)) nf_log_packet(pf, 0, skb, NULL, NULL, NULL, msg); return -NF_ACCEPT; } diff --git a/net/netfilter/nf_conntrack_proto_generic.c b/net/netfilter/nf_conntrack_proto_generic.c index e31b0e7bd0b1..dbe680af85d2 100644 --- a/net/netfilter/nf_conntrack_proto_generic.c +++ b/net/netfilter/nf_conntrack_proto_generic.c @@ -45,7 +45,7 @@ static int packet(struct nf_conn *ct, const struct sk_buff *skb, unsigned int dataoff, enum ip_conntrack_info ctinfo, - int pf, + u_int8_t pf, unsigned int hooknum) { nf_ct_refresh_acct(ct, ctinfo, skb, nf_ct_generic_timeout); diff --git a/net/netfilter/nf_conntrack_proto_gre.c b/net/netfilter/nf_conntrack_proto_gre.c index 9bd03967fea4..a2cdbcbf64c4 100644 --- a/net/netfilter/nf_conntrack_proto_gre.c +++ b/net/netfilter/nf_conntrack_proto_gre.c @@ -29,8 +29,11 @@ #include <linux/list.h> #include <linux/seq_file.h> #include <linux/in.h> +#include <linux/netdevice.h> #include <linux/skbuff.h> - +#include <net/dst.h> +#include <net/net_namespace.h> +#include <net/netns/generic.h> #include <net/netfilter/nf_conntrack_l4proto.h> #include <net/netfilter/nf_conntrack_helper.h> #include <net/netfilter/nf_conntrack_core.h> @@ -40,19 +43,23 @@ #define GRE_TIMEOUT (30 * HZ) #define GRE_STREAM_TIMEOUT (180 * HZ) -static DEFINE_RWLOCK(nf_ct_gre_lock); -static LIST_HEAD(gre_keymap_list); +static int proto_gre_net_id; +struct netns_proto_gre { + rwlock_t keymap_lock; + struct list_head keymap_list; +}; -void nf_ct_gre_keymap_flush(void) +void nf_ct_gre_keymap_flush(struct net *net) { + struct netns_proto_gre *net_gre = net_generic(net, proto_gre_net_id); struct nf_ct_gre_keymap *km, *tmp; - write_lock_bh(&nf_ct_gre_lock); - list_for_each_entry_safe(km, tmp, &gre_keymap_list, list) { + write_lock_bh(&net_gre->keymap_lock); + list_for_each_entry_safe(km, tmp, &net_gre->keymap_list, list) { list_del(&km->list); kfree(km); } - write_unlock_bh(&nf_ct_gre_lock); + write_unlock_bh(&net_gre->keymap_lock); } EXPORT_SYMBOL(nf_ct_gre_keymap_flush); @@ -67,19 +74,20 @@ static inline int gre_key_cmpfn(const struct nf_ct_gre_keymap *km, } /* look up the source key for a given tuple */ -static __be16 gre_keymap_lookup(struct nf_conntrack_tuple *t) +static __be16 gre_keymap_lookup(struct net *net, struct nf_conntrack_tuple *t) { + struct netns_proto_gre *net_gre = net_generic(net, proto_gre_net_id); struct nf_ct_gre_keymap *km; __be16 key = 0; - read_lock_bh(&nf_ct_gre_lock); - list_for_each_entry(km, &gre_keymap_list, list) { + read_lock_bh(&net_gre->keymap_lock); + list_for_each_entry(km, &net_gre->keymap_list, list) { if (gre_key_cmpfn(km, t)) { key = km->tuple.src.u.gre.key; break; } } - read_unlock_bh(&nf_ct_gre_lock); + read_unlock_bh(&net_gre->keymap_lock); pr_debug("lookup src key 0x%x for ", key); nf_ct_dump_tuple(t); @@ -91,20 +99,22 @@ static __be16 gre_keymap_lookup(struct nf_conntrack_tuple *t) int nf_ct_gre_keymap_add(struct nf_conn *ct, enum ip_conntrack_dir dir, struct nf_conntrack_tuple *t) { + struct net *net = nf_ct_net(ct); + struct netns_proto_gre *net_gre = net_generic(net, proto_gre_net_id); struct nf_conn_help *help = nfct_help(ct); struct nf_ct_gre_keymap **kmp, *km; kmp = &help->help.ct_pptp_info.keymap[dir]; if (*kmp) { /* check whether it's a retransmission */ - read_lock_bh(&nf_ct_gre_lock); - list_for_each_entry(km, &gre_keymap_list, list) { + read_lock_bh(&net_gre->keymap_lock); + list_for_each_entry(km, &net_gre->keymap_list, list) { if (gre_key_cmpfn(km, t) && km == *kmp) { - read_unlock_bh(&nf_ct_gre_lock); + read_unlock_bh(&net_gre->keymap_lock); return 0; } } - read_unlock_bh(&nf_ct_gre_lock); + read_unlock_bh(&net_gre->keymap_lock); pr_debug("trying to override keymap_%s for ct %p\n", dir == IP_CT_DIR_REPLY ? "reply" : "orig", ct); return -EEXIST; @@ -119,9 +129,9 @@ int nf_ct_gre_keymap_add(struct nf_conn *ct, enum ip_conntrack_dir dir, pr_debug("adding new entry %p: ", km); nf_ct_dump_tuple(&km->tuple); - write_lock_bh(&nf_ct_gre_lock); - list_add_tail(&km->list, &gre_keymap_list); - write_unlock_bh(&nf_ct_gre_lock); + write_lock_bh(&net_gre->keymap_lock); + list_add_tail(&km->list, &net_gre->keymap_list); + write_unlock_bh(&net_gre->keymap_lock); return 0; } @@ -130,12 +140,14 @@ EXPORT_SYMBOL_GPL(nf_ct_gre_keymap_add); /* destroy the keymap entries associated with specified master ct */ void nf_ct_gre_keymap_destroy(struct nf_conn *ct) { + struct net *net = nf_ct_net(ct); + struct netns_proto_gre *net_gre = net_generic(net, proto_gre_net_id); struct nf_conn_help *help = nfct_help(ct); enum ip_conntrack_dir dir; pr_debug("entering for ct %p\n", ct); - write_lock_bh(&nf_ct_gre_lock); + write_lock_bh(&net_gre->keymap_lock); for (dir = IP_CT_DIR_ORIGINAL; dir < IP_CT_DIR_MAX; dir++) { if (help->help.ct_pptp_info.keymap[dir]) { pr_debug("removing %p from list\n", @@ -145,7 +157,7 @@ void nf_ct_gre_keymap_destroy(struct nf_conn *ct) help->help.ct_pptp_info.keymap[dir] = NULL; } } - write_unlock_bh(&nf_ct_gre_lock); + write_unlock_bh(&net_gre->keymap_lock); } EXPORT_SYMBOL_GPL(nf_ct_gre_keymap_destroy); @@ -164,6 +176,7 @@ static bool gre_invert_tuple(struct nf_conntrack_tuple *tuple, static bool gre_pkt_to_tuple(const struct sk_buff *skb, unsigned int dataoff, struct nf_conntrack_tuple *tuple) { + struct net *net = dev_net(skb->dev ? skb->dev : skb->dst->dev); const struct gre_hdr_pptp *pgrehdr; struct gre_hdr_pptp _pgrehdr; __be16 srckey; @@ -190,7 +203,7 @@ static bool gre_pkt_to_tuple(const struct sk_buff *skb, unsigned int dataoff, } tuple->dst.u.gre.key = pgrehdr->call_id; - srckey = gre_keymap_lookup(tuple); + srckey = gre_keymap_lookup(net, tuple); tuple->src.u.gre.key = srckey; return true; @@ -219,7 +232,7 @@ static int gre_packet(struct nf_conn *ct, const struct sk_buff *skb, unsigned int dataoff, enum ip_conntrack_info ctinfo, - int pf, + u_int8_t pf, unsigned int hooknum) { /* If we've seen traffic both ways, this is a GRE connection. @@ -229,7 +242,7 @@ static int gre_packet(struct nf_conn *ct, ct->proto.gre.stream_timeout); /* Also, more likely to be important, and not a probe. */ set_bit(IPS_ASSURED_BIT, &ct->status); - nf_conntrack_event_cache(IPCT_STATUS, skb); + nf_conntrack_event_cache(IPCT_STATUS, ct); } else nf_ct_refresh_acct(ct, ctinfo, skb, ct->proto.gre.timeout); @@ -285,15 +298,53 @@ static struct nf_conntrack_l4proto nf_conntrack_l4proto_gre4 __read_mostly = { #endif }; +static int proto_gre_net_init(struct net *net) +{ + struct netns_proto_gre *net_gre; + int rv; + + net_gre = kmalloc(sizeof(struct netns_proto_gre), GFP_KERNEL); + if (!net_gre) + return -ENOMEM; + rwlock_init(&net_gre->keymap_lock); + INIT_LIST_HEAD(&net_gre->keymap_list); + + rv = net_assign_generic(net, proto_gre_net_id, net_gre); + if (rv < 0) + kfree(net_gre); + return rv; +} + +static void proto_gre_net_exit(struct net *net) +{ + struct netns_proto_gre *net_gre = net_generic(net, proto_gre_net_id); + + nf_ct_gre_keymap_flush(net); + kfree(net_gre); +} + +static struct pernet_operations proto_gre_net_ops = { + .init = proto_gre_net_init, + .exit = proto_gre_net_exit, +}; + static int __init nf_ct_proto_gre_init(void) { - return nf_conntrack_l4proto_register(&nf_conntrack_l4proto_gre4); + int rv; + + rv = nf_conntrack_l4proto_register(&nf_conntrack_l4proto_gre4); + if (rv < 0) + return rv; + rv = register_pernet_gen_device(&proto_gre_net_id, &proto_gre_net_ops); + if (rv < 0) + nf_conntrack_l4proto_unregister(&nf_conntrack_l4proto_gre4); + return rv; } static void nf_ct_proto_gre_fini(void) { nf_conntrack_l4proto_unregister(&nf_conntrack_l4proto_gre4); - nf_ct_gre_keymap_flush(); + unregister_pernet_gen_device(proto_gre_net_id, &proto_gre_net_ops); } module_init(nf_ct_proto_gre_init); diff --git a/net/netfilter/nf_conntrack_proto_sctp.c b/net/netfilter/nf_conntrack_proto_sctp.c index 30aa5b94a771..ae8c2609e230 100644 --- a/net/netfilter/nf_conntrack_proto_sctp.c +++ b/net/netfilter/nf_conntrack_proto_sctp.c @@ -287,7 +287,7 @@ static int sctp_packet(struct nf_conn *ct, const struct sk_buff *skb, unsigned int dataoff, enum ip_conntrack_info ctinfo, - int pf, + u_int8_t pf, unsigned int hooknum) { enum sctp_conntrack new_state, old_state; @@ -369,7 +369,7 @@ static int sctp_packet(struct nf_conn *ct, ct->proto.sctp.state = new_state; if (old_state != new_state) - nf_conntrack_event_cache(IPCT_PROTOINFO, skb); + nf_conntrack_event_cache(IPCT_PROTOINFO, ct); } write_unlock_bh(&sctp_lock); @@ -380,7 +380,7 @@ static int sctp_packet(struct nf_conn *ct, new_state == SCTP_CONNTRACK_ESTABLISHED) { pr_debug("Setting assured bit\n"); set_bit(IPS_ASSURED_BIT, &ct->status); - nf_conntrack_event_cache(IPCT_STATUS, skb); + nf_conntrack_event_cache(IPCT_STATUS, ct); } return NF_ACCEPT; diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c index 6f61261888ef..f947ec41e391 100644 --- a/net/netfilter/nf_conntrack_proto_tcp.c +++ b/net/netfilter/nf_conntrack_proto_tcp.c @@ -486,8 +486,9 @@ static bool tcp_in_window(const struct nf_conn *ct, const struct sk_buff *skb, unsigned int dataoff, const struct tcphdr *tcph, - int pf) + u_int8_t pf) { + struct net *net = nf_ct_net(ct); struct ip_ct_tcp_state *sender = &state->seen[dir]; struct ip_ct_tcp_state *receiver = &state->seen[!dir]; const struct nf_conntrack_tuple *tuple = &ct->tuplehash[dir].tuple; @@ -668,7 +669,7 @@ static bool tcp_in_window(const struct nf_conn *ct, if (sender->flags & IP_CT_TCP_FLAG_BE_LIBERAL || nf_ct_tcp_be_liberal) res = true; - if (!res && LOG_INVALID(IPPROTO_TCP)) + if (!res && LOG_INVALID(net, IPPROTO_TCP)) nf_log_packet(pf, 0, skb, NULL, NULL, NULL, "nf_ct_tcp: %s ", before(seq, sender->td_maxend + 1) ? @@ -746,10 +747,11 @@ static const u8 tcp_valid_flags[(TH_FIN|TH_SYN|TH_RST|TH_ACK|TH_URG) + 1] = }; /* Protect conntrack agaist broken packets. Code taken from ipt_unclean.c. */ -static int tcp_error(struct sk_buff *skb, +static int tcp_error(struct net *net, + struct sk_buff *skb, unsigned int dataoff, enum ip_conntrack_info *ctinfo, - int pf, + u_int8_t pf, unsigned int hooknum) { const struct tcphdr *th; @@ -760,7 +762,7 @@ static int tcp_error(struct sk_buff *skb, /* Smaller that minimal TCP header? */ th = skb_header_pointer(skb, dataoff, sizeof(_tcph), &_tcph); if (th == NULL) { - if (LOG_INVALID(IPPROTO_TCP)) + if (LOG_INVALID(net, IPPROTO_TCP)) nf_log_packet(pf, 0, skb, NULL, NULL, NULL, "nf_ct_tcp: short packet "); return -NF_ACCEPT; @@ -768,7 +770,7 @@ static int tcp_error(struct sk_buff *skb, /* Not whole TCP header or malformed packet */ if (th->doff*4 < sizeof(struct tcphdr) || tcplen < th->doff*4) { - if (LOG_INVALID(IPPROTO_TCP)) + if (LOG_INVALID(net, IPPROTO_TCP)) nf_log_packet(pf, 0, skb, NULL, NULL, NULL, "nf_ct_tcp: truncated/malformed packet "); return -NF_ACCEPT; @@ -779,9 +781,9 @@ static int tcp_error(struct sk_buff *skb, * because the checksum is assumed to be correct. */ /* FIXME: Source route IP option packets --RR */ - if (nf_conntrack_checksum && hooknum == NF_INET_PRE_ROUTING && + if (net->ct.sysctl_checksum && hooknum == NF_INET_PRE_ROUTING && nf_checksum(skb, hooknum, dataoff, IPPROTO_TCP, pf)) { - if (LOG_INVALID(IPPROTO_TCP)) + if (LOG_INVALID(net, IPPROTO_TCP)) nf_log_packet(pf, 0, skb, NULL, NULL, NULL, "nf_ct_tcp: bad TCP checksum "); return -NF_ACCEPT; @@ -790,7 +792,7 @@ static int tcp_error(struct sk_buff *skb, /* Check TCP flags. */ tcpflags = (((u_int8_t *)th)[13] & ~(TH_ECE|TH_CWR|TH_PUSH)); if (!tcp_valid_flags[tcpflags]) { - if (LOG_INVALID(IPPROTO_TCP)) + if (LOG_INVALID(net, IPPROTO_TCP)) nf_log_packet(pf, 0, skb, NULL, NULL, NULL, "nf_ct_tcp: invalid TCP flag combination "); return -NF_ACCEPT; @@ -804,9 +806,10 @@ static int tcp_packet(struct nf_conn *ct, const struct sk_buff *skb, unsigned int dataoff, enum ip_conntrack_info ctinfo, - int pf, + u_int8_t pf, unsigned int hooknum) { + struct net *net = nf_ct_net(ct); struct nf_conntrack_tuple *tuple; enum tcp_conntrack new_state, old_state; enum ip_conntrack_dir dir; @@ -885,7 +888,7 @@ static int tcp_packet(struct nf_conn *ct, * thus initiate a clean new session. */ write_unlock_bh(&tcp_lock); - if (LOG_INVALID(IPPROTO_TCP)) + if (LOG_INVALID(net, IPPROTO_TCP)) nf_log_packet(pf, 0, skb, NULL, NULL, NULL, "nf_ct_tcp: killing out of sync session "); nf_ct_kill(ct); @@ -898,7 +901,7 @@ static int tcp_packet(struct nf_conn *ct, segment_seq_plus_len(ntohl(th->seq), skb->len, dataoff, th); write_unlock_bh(&tcp_lock); - if (LOG_INVALID(IPPROTO_TCP)) + if (LOG_INVALID(net, IPPROTO_TCP)) nf_log_packet(pf, 0, skb, NULL, NULL, NULL, "nf_ct_tcp: invalid packet ignored "); return NF_ACCEPT; @@ -907,7 +910,7 @@ static int tcp_packet(struct nf_conn *ct, pr_debug("nf_ct_tcp: Invalid dir=%i index=%u ostate=%u\n", dir, get_conntrack_index(th), old_state); write_unlock_bh(&tcp_lock); - if (LOG_INVALID(IPPROTO_TCP)) + if (LOG_INVALID(net, IPPROTO_TCP)) nf_log_packet(pf, 0, skb, NULL, NULL, NULL, "nf_ct_tcp: invalid state "); return -NF_ACCEPT; @@ -968,9 +971,9 @@ static int tcp_packet(struct nf_conn *ct, timeout = tcp_timeouts[new_state]; write_unlock_bh(&tcp_lock); - nf_conntrack_event_cache(IPCT_PROTOINFO_VOLATILE, skb); + nf_conntrack_event_cache(IPCT_PROTOINFO_VOLATILE, ct); if (new_state != old_state) - nf_conntrack_event_cache(IPCT_PROTOINFO, skb); + nf_conntrack_event_cache(IPCT_PROTOINFO, ct); if (!test_bit(IPS_SEEN_REPLY_BIT, &ct->status)) { /* If only reply is a RST, we can consider ourselves not to @@ -989,7 +992,7 @@ static int tcp_packet(struct nf_conn *ct, after SYN_RECV or a valid answer for a picked up connection. */ set_bit(IPS_ASSURED_BIT, &ct->status); - nf_conntrack_event_cache(IPCT_STATUS, skb); + nf_conntrack_event_cache(IPCT_STATUS, ct); } nf_ct_refresh_acct(ct, ctinfo, skb, timeout); diff --git a/net/netfilter/nf_conntrack_proto_udp.c b/net/netfilter/nf_conntrack_proto_udp.c index 8b21762e65de..7c2ca48698be 100644 --- a/net/netfilter/nf_conntrack_proto_udp.c +++ b/net/netfilter/nf_conntrack_proto_udp.c @@ -66,7 +66,7 @@ static int udp_packet(struct nf_conn *ct, const struct sk_buff *skb, unsigned int dataoff, enum ip_conntrack_info ctinfo, - int pf, + u_int8_t pf, unsigned int hooknum) { /* If we've seen traffic both ways, this is some kind of UDP @@ -75,7 +75,7 @@ static int udp_packet(struct nf_conn *ct, nf_ct_refresh_acct(ct, ctinfo, skb, nf_ct_udp_timeout_stream); /* Also, more likely to be important, and not a probe */ if (!test_and_set_bit(IPS_ASSURED_BIT, &ct->status)) - nf_conntrack_event_cache(IPCT_STATUS, skb); + nf_conntrack_event_cache(IPCT_STATUS, ct); } else nf_ct_refresh_acct(ct, ctinfo, skb, nf_ct_udp_timeout); @@ -89,9 +89,9 @@ static bool udp_new(struct nf_conn *ct, const struct sk_buff *skb, return true; } -static int udp_error(struct sk_buff *skb, unsigned int dataoff, +static int udp_error(struct net *net, struct sk_buff *skb, unsigned int dataoff, enum ip_conntrack_info *ctinfo, - int pf, + u_int8_t pf, unsigned int hooknum) { unsigned int udplen = skb->len - dataoff; @@ -101,7 +101,7 @@ static int udp_error(struct sk_buff *skb, unsigned int dataoff, /* Header is too small? */ hdr = skb_header_pointer(skb, dataoff, sizeof(_hdr), &_hdr); if (hdr == NULL) { - if (LOG_INVALID(IPPROTO_UDP)) + if (LOG_INVALID(net, IPPROTO_UDP)) nf_log_packet(pf, 0, skb, NULL, NULL, NULL, "nf_ct_udp: short packet "); return -NF_ACCEPT; @@ -109,7 +109,7 @@ static int udp_error(struct sk_buff *skb, unsigned int dataoff, /* Truncated/malformed packets */ if (ntohs(hdr->len) > udplen || ntohs(hdr->len) < sizeof(*hdr)) { - if (LOG_INVALID(IPPROTO_UDP)) + if (LOG_INVALID(net, IPPROTO_UDP)) nf_log_packet(pf, 0, skb, NULL, NULL, NULL, "nf_ct_udp: truncated/malformed packet "); return -NF_ACCEPT; @@ -123,9 +123,9 @@ static int udp_error(struct sk_buff *skb, unsigned int dataoff, * We skip checking packets on the outgoing path * because the checksum is assumed to be correct. * FIXME: Source route IP option packets --RR */ - if (nf_conntrack_checksum && hooknum == NF_INET_PRE_ROUTING && + if (net->ct.sysctl_checksum && hooknum == NF_INET_PRE_ROUTING && nf_checksum(skb, hooknum, dataoff, IPPROTO_UDP, pf)) { - if (LOG_INVALID(IPPROTO_UDP)) + if (LOG_INVALID(net, IPPROTO_UDP)) nf_log_packet(pf, 0, skb, NULL, NULL, NULL, "nf_ct_udp: bad UDP checksum "); return -NF_ACCEPT; diff --git a/net/netfilter/nf_conntrack_proto_udplite.c b/net/netfilter/nf_conntrack_proto_udplite.c index 1fa62f3c24f1..d22d839e4f94 100644 --- a/net/netfilter/nf_conntrack_proto_udplite.c +++ b/net/netfilter/nf_conntrack_proto_udplite.c @@ -65,7 +65,7 @@ static int udplite_packet(struct nf_conn *ct, const struct sk_buff *skb, unsigned int dataoff, enum ip_conntrack_info ctinfo, - int pf, + u_int8_t pf, unsigned int hooknum) { /* If we've seen traffic both ways, this is some kind of UDP @@ -75,7 +75,7 @@ static int udplite_packet(struct nf_conn *ct, nf_ct_udplite_timeout_stream); /* Also, more likely to be important, and not a probe */ if (!test_and_set_bit(IPS_ASSURED_BIT, &ct->status)) - nf_conntrack_event_cache(IPCT_STATUS, skb); + nf_conntrack_event_cache(IPCT_STATUS, ct); } else nf_ct_refresh_acct(ct, ctinfo, skb, nf_ct_udplite_timeout); @@ -89,9 +89,11 @@ static bool udplite_new(struct nf_conn *ct, const struct sk_buff *skb, return true; } -static int udplite_error(struct sk_buff *skb, unsigned int dataoff, +static int udplite_error(struct net *net, + struct sk_buff *skb, + unsigned int dataoff, enum ip_conntrack_info *ctinfo, - int pf, + u_int8_t pf, unsigned int hooknum) { unsigned int udplen = skb->len - dataoff; @@ -102,7 +104,7 @@ static int udplite_error(struct sk_buff *skb, unsigned int dataoff, /* Header is too small? */ hdr = skb_header_pointer(skb, dataoff, sizeof(_hdr), &_hdr); if (hdr == NULL) { - if (LOG_INVALID(IPPROTO_UDPLITE)) + if (LOG_INVALID(net, IPPROTO_UDPLITE)) nf_log_packet(pf, 0, skb, NULL, NULL, NULL, "nf_ct_udplite: short packet "); return -NF_ACCEPT; @@ -112,7 +114,7 @@ static int udplite_error(struct sk_buff *skb, unsigned int dataoff, if (cscov == 0) cscov = udplen; else if (cscov < sizeof(*hdr) || cscov > udplen) { - if (LOG_INVALID(IPPROTO_UDPLITE)) + if (LOG_INVALID(net, IPPROTO_UDPLITE)) nf_log_packet(pf, 0, skb, NULL, NULL, NULL, "nf_ct_udplite: invalid checksum coverage "); return -NF_ACCEPT; @@ -120,17 +122,17 @@ static int udplite_error(struct sk_buff *skb, unsigned int dataoff, /* UDPLITE mandates checksums */ if (!hdr->check) { - if (LOG_INVALID(IPPROTO_UDPLITE)) + if (LOG_INVALID(net, IPPROTO_UDPLITE)) nf_log_packet(pf, 0, skb, NULL, NULL, NULL, "nf_ct_udplite: checksum missing "); return -NF_ACCEPT; } /* Checksum invalid? Ignore. */ - if (nf_conntrack_checksum && hooknum == NF_INET_PRE_ROUTING && + if (net->ct.sysctl_checksum && hooknum == NF_INET_PRE_ROUTING && nf_checksum_partial(skb, hooknum, dataoff, cscov, IPPROTO_UDP, pf)) { - if (LOG_INVALID(IPPROTO_UDPLITE)) + if (LOG_INVALID(net, IPPROTO_UDPLITE)) nf_log_packet(pf, 0, skb, NULL, NULL, NULL, "nf_ct_udplite: bad UDPLite checksum "); return -NF_ACCEPT; diff --git a/net/netfilter/nf_conntrack_sip.c b/net/netfilter/nf_conntrack_sip.c index 1fa306be60fb..6813f1c8863f 100644 --- a/net/netfilter/nf_conntrack_sip.c +++ b/net/netfilter/nf_conntrack_sip.c @@ -736,6 +736,7 @@ static int set_expected_rtp_rtcp(struct sk_buff *skb, struct nf_conntrack_expect *exp, *rtp_exp, *rtcp_exp; enum ip_conntrack_info ctinfo; struct nf_conn *ct = nf_ct_get(skb, &ctinfo); + struct net *net = nf_ct_net(ct); enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo); union nf_inet_addr *saddr; struct nf_conntrack_tuple tuple; @@ -775,7 +776,7 @@ static int set_expected_rtp_rtcp(struct sk_buff *skb, rcu_read_lock(); do { - exp = __nf_ct_expect_find(&tuple); + exp = __nf_ct_expect_find(net, &tuple); if (!exp || exp->master == ct || nfct_help(exp->master)->helper != nfct_help(ct)->helper || diff --git a/net/netfilter/nf_conntrack_standalone.c b/net/netfilter/nf_conntrack_standalone.c index 8509db14670b..98106d4e89f0 100644 --- a/net/netfilter/nf_conntrack_standalone.c +++ b/net/netfilter/nf_conntrack_standalone.c @@ -40,18 +40,20 @@ print_tuple(struct seq_file *s, const struct nf_conntrack_tuple *tuple, EXPORT_SYMBOL_GPL(print_tuple); struct ct_iter_state { + struct seq_net_private p; unsigned int bucket; }; static struct hlist_node *ct_get_first(struct seq_file *seq) { + struct net *net = seq_file_net(seq); struct ct_iter_state *st = seq->private; struct hlist_node *n; for (st->bucket = 0; st->bucket < nf_conntrack_htable_size; st->bucket++) { - n = rcu_dereference(nf_conntrack_hash[st->bucket].first); + n = rcu_dereference(net->ct.hash[st->bucket].first); if (n) return n; } @@ -61,13 +63,14 @@ static struct hlist_node *ct_get_first(struct seq_file *seq) static struct hlist_node *ct_get_next(struct seq_file *seq, struct hlist_node *head) { + struct net *net = seq_file_net(seq); struct ct_iter_state *st = seq->private; head = rcu_dereference(head->next); while (head == NULL) { if (++st->bucket >= nf_conntrack_htable_size) return NULL; - head = rcu_dereference(nf_conntrack_hash[st->bucket].first); + head = rcu_dereference(net->ct.hash[st->bucket].first); } return head; } @@ -177,7 +180,7 @@ static const struct seq_operations ct_seq_ops = { static int ct_open(struct inode *inode, struct file *file) { - return seq_open_private(file, &ct_seq_ops, + return seq_open_net(inode, file, &ct_seq_ops, sizeof(struct ct_iter_state)); } @@ -186,11 +189,12 @@ static const struct file_operations ct_file_ops = { .open = ct_open, .read = seq_read, .llseek = seq_lseek, - .release = seq_release_private, + .release = seq_release_net, }; static void *ct_cpu_seq_start(struct seq_file *seq, loff_t *pos) { + struct net *net = seq_file_net(seq); int cpu; if (*pos == 0) @@ -200,7 +204,7 @@ static void *ct_cpu_seq_start(struct seq_file *seq, loff_t *pos) if (!cpu_possible(cpu)) continue; *pos = cpu + 1; - return &per_cpu(nf_conntrack_stat, cpu); + return per_cpu_ptr(net->ct.stat, cpu); } return NULL; @@ -208,13 +212,14 @@ static void *ct_cpu_seq_start(struct seq_file *seq, loff_t *pos) static void *ct_cpu_seq_next(struct seq_file *seq, void *v, loff_t *pos) { + struct net *net = seq_file_net(seq); int cpu; for (cpu = *pos; cpu < NR_CPUS; ++cpu) { if (!cpu_possible(cpu)) continue; *pos = cpu + 1; - return &per_cpu(nf_conntrack_stat, cpu); + return per_cpu_ptr(net->ct.stat, cpu); } return NULL; @@ -226,7 +231,8 @@ static void ct_cpu_seq_stop(struct seq_file *seq, void *v) static int ct_cpu_seq_show(struct seq_file *seq, void *v) { - unsigned int nr_conntracks = atomic_read(&nf_conntrack_count); + struct net *net = seq_file_net(seq); + unsigned int nr_conntracks = atomic_read(&net->ct.count); const struct ip_conntrack_stat *st = v; if (v == SEQ_START_TOKEN) { @@ -266,7 +272,8 @@ static const struct seq_operations ct_cpu_seq_ops = { static int ct_cpu_seq_open(struct inode *inode, struct file *file) { - return seq_open(file, &ct_cpu_seq_ops); + return seq_open_net(inode, file, &ct_cpu_seq_ops, + sizeof(struct seq_net_private)); } static const struct file_operations ct_cpu_seq_fops = { @@ -274,56 +281,52 @@ static const struct file_operations ct_cpu_seq_fops = { .open = ct_cpu_seq_open, .read = seq_read, .llseek = seq_lseek, - .release = seq_release, + .release = seq_release_net, }; -static int nf_conntrack_standalone_init_proc(void) +static int nf_conntrack_standalone_init_proc(struct net *net) { struct proc_dir_entry *pde; - pde = proc_net_fops_create(&init_net, "nf_conntrack", 0440, &ct_file_ops); + pde = proc_net_fops_create(net, "nf_conntrack", 0440, &ct_file_ops); if (!pde) goto out_nf_conntrack; - pde = proc_create("nf_conntrack", S_IRUGO, init_net.proc_net_stat, + pde = proc_create("nf_conntrack", S_IRUGO, net->proc_net_stat, &ct_cpu_seq_fops); if (!pde) goto out_stat_nf_conntrack; return 0; out_stat_nf_conntrack: - proc_net_remove(&init_net, "nf_conntrack"); + proc_net_remove(net, "nf_conntrack"); out_nf_conntrack: return -ENOMEM; } -static void nf_conntrack_standalone_fini_proc(void) +static void nf_conntrack_standalone_fini_proc(struct net *net) { - remove_proc_entry("nf_conntrack", init_net.proc_net_stat); - proc_net_remove(&init_net, "nf_conntrack"); + remove_proc_entry("nf_conntrack", net->proc_net_stat); + proc_net_remove(net, "nf_conntrack"); } #else -static int nf_conntrack_standalone_init_proc(void) +static int nf_conntrack_standalone_init_proc(struct net *net) { return 0; } -static void nf_conntrack_standalone_fini_proc(void) +static void nf_conntrack_standalone_fini_proc(struct net *net) { } #endif /* CONFIG_PROC_FS */ /* Sysctl support */ -int nf_conntrack_checksum __read_mostly = 1; -EXPORT_SYMBOL_GPL(nf_conntrack_checksum); - #ifdef CONFIG_SYSCTL /* Log invalid packets of a given protocol */ static int log_invalid_proto_min = 0; static int log_invalid_proto_max = 255; -static struct ctl_table_header *nf_ct_sysctl_header; static struct ctl_table_header *nf_ct_netfilter_header; static ctl_table nf_ct_sysctl_table[] = { @@ -338,7 +341,7 @@ static ctl_table nf_ct_sysctl_table[] = { { .ctl_name = NET_NF_CONNTRACK_COUNT, .procname = "nf_conntrack_count", - .data = &nf_conntrack_count, + .data = &init_net.ct.count, .maxlen = sizeof(int), .mode = 0444, .proc_handler = &proc_dointvec, @@ -354,7 +357,7 @@ static ctl_table nf_ct_sysctl_table[] = { { .ctl_name = NET_NF_CONNTRACK_CHECKSUM, .procname = "nf_conntrack_checksum", - .data = &nf_conntrack_checksum, + .data = &init_net.ct.sysctl_checksum, .maxlen = sizeof(unsigned int), .mode = 0644, .proc_handler = &proc_dointvec, @@ -362,7 +365,7 @@ static ctl_table nf_ct_sysctl_table[] = { { .ctl_name = NET_NF_CONNTRACK_LOG_INVALID, .procname = "nf_conntrack_log_invalid", - .data = &nf_ct_log_invalid, + .data = &init_net.ct.sysctl_log_invalid, .maxlen = sizeof(unsigned int), .mode = 0644, .proc_handler = &proc_dointvec_minmax, @@ -400,74 +403,109 @@ static struct ctl_path nf_ct_path[] = { { } }; -EXPORT_SYMBOL_GPL(nf_ct_log_invalid); - -static int nf_conntrack_standalone_init_sysctl(void) +static int nf_conntrack_standalone_init_sysctl(struct net *net) { - nf_ct_netfilter_header = - register_sysctl_paths(nf_ct_path, nf_ct_netfilter_table); - if (!nf_ct_netfilter_header) - goto out; - - nf_ct_sysctl_header = - register_sysctl_paths(nf_net_netfilter_sysctl_path, - nf_ct_sysctl_table); - if (!nf_ct_sysctl_header) + struct ctl_table *table; + + if (net_eq(net, &init_net)) { + nf_ct_netfilter_header = + register_sysctl_paths(nf_ct_path, nf_ct_netfilter_table); + if (!nf_ct_netfilter_header) + goto out; + } + + table = kmemdup(nf_ct_sysctl_table, sizeof(nf_ct_sysctl_table), + GFP_KERNEL); + if (!table) + goto out_kmemdup; + + table[1].data = &net->ct.count; + table[3].data = &net->ct.sysctl_checksum; + table[4].data = &net->ct.sysctl_log_invalid; + + net->ct.sysctl_header = register_net_sysctl_table(net, + nf_net_netfilter_sysctl_path, table); + if (!net->ct.sysctl_header) goto out_unregister_netfilter; return 0; out_unregister_netfilter: - unregister_sysctl_table(nf_ct_netfilter_header); + kfree(table); +out_kmemdup: + if (net_eq(net, &init_net)) + unregister_sysctl_table(nf_ct_netfilter_header); out: printk("nf_conntrack: can't register to sysctl.\n"); return -ENOMEM; } -static void nf_conntrack_standalone_fini_sysctl(void) +static void nf_conntrack_standalone_fini_sysctl(struct net *net) { - unregister_sysctl_table(nf_ct_netfilter_header); - unregister_sysctl_table(nf_ct_sysctl_header); + struct ctl_table *table; + + if (net_eq(net, &init_net)) + unregister_sysctl_table(nf_ct_netfilter_header); + table = net->ct.sysctl_header->ctl_table_arg; + unregister_net_sysctl_table(net->ct.sysctl_header); + kfree(table); } #else -static int nf_conntrack_standalone_init_sysctl(void) +static int nf_conntrack_standalone_init_sysctl(struct net *net) { return 0; } -static void nf_conntrack_standalone_fini_sysctl(void) +static void nf_conntrack_standalone_fini_sysctl(struct net *net) { } #endif /* CONFIG_SYSCTL */ -static int __init nf_conntrack_standalone_init(void) +static int nf_conntrack_net_init(struct net *net) { int ret; - ret = nf_conntrack_init(); + ret = nf_conntrack_init(net); if (ret < 0) - goto out; - ret = nf_conntrack_standalone_init_proc(); + goto out_init; + ret = nf_conntrack_standalone_init_proc(net); if (ret < 0) goto out_proc; - ret = nf_conntrack_standalone_init_sysctl(); + net->ct.sysctl_checksum = 1; + net->ct.sysctl_log_invalid = 0; + ret = nf_conntrack_standalone_init_sysctl(net); if (ret < 0) goto out_sysctl; return 0; out_sysctl: - nf_conntrack_standalone_fini_proc(); + nf_conntrack_standalone_fini_proc(net); out_proc: - nf_conntrack_cleanup(); -out: + nf_conntrack_cleanup(net); +out_init: return ret; } +static void nf_conntrack_net_exit(struct net *net) +{ + nf_conntrack_standalone_fini_sysctl(net); + nf_conntrack_standalone_fini_proc(net); + nf_conntrack_cleanup(net); +} + +static struct pernet_operations nf_conntrack_net_ops = { + .init = nf_conntrack_net_init, + .exit = nf_conntrack_net_exit, +}; + +static int __init nf_conntrack_standalone_init(void) +{ + return register_pernet_subsys(&nf_conntrack_net_ops); +} + static void __exit nf_conntrack_standalone_fini(void) { - nf_conntrack_standalone_fini_sysctl(); - nf_conntrack_standalone_fini_proc(); - nf_conntrack_cleanup(); + unregister_pernet_subsys(&nf_conntrack_net_ops); } module_init(nf_conntrack_standalone_init); diff --git a/net/netfilter/nf_internals.h b/net/netfilter/nf_internals.h index 196269c1e586..bf6609978af7 100644 --- a/net/netfilter/nf_internals.h +++ b/net/netfilter/nf_internals.h @@ -15,7 +15,7 @@ /* core.c */ extern unsigned int nf_iterate(struct list_head *head, struct sk_buff *skb, - int hook, + unsigned int hook, const struct net_device *indev, const struct net_device *outdev, struct list_head **i, @@ -25,7 +25,7 @@ extern unsigned int nf_iterate(struct list_head *head, /* nf_queue.c */ extern int nf_queue(struct sk_buff *skb, struct list_head *elem, - int pf, unsigned int hook, + u_int8_t pf, unsigned int hook, struct net_device *indev, struct net_device *outdev, int (*okfn)(struct sk_buff *), diff --git a/net/netfilter/nf_log.c b/net/netfilter/nf_log.c index 9fda6ee95a31..fa8ae5d2659c 100644 --- a/net/netfilter/nf_log.c +++ b/net/netfilter/nf_log.c @@ -15,16 +15,16 @@ #define NF_LOG_PREFIXLEN 128 -static const struct nf_logger *nf_loggers[NPROTO] __read_mostly; +static const struct nf_logger *nf_loggers[NFPROTO_NUMPROTO] __read_mostly; static DEFINE_MUTEX(nf_log_mutex); /* return EBUSY if somebody else is registered, EEXIST if the same logger * is registred, 0 on success. */ -int nf_log_register(int pf, const struct nf_logger *logger) +int nf_log_register(u_int8_t pf, const struct nf_logger *logger) { int ret; - if (pf >= NPROTO) + if (pf >= ARRAY_SIZE(nf_loggers)) return -EINVAL; /* Any setup of logging members must be done before @@ -45,9 +45,9 @@ int nf_log_register(int pf, const struct nf_logger *logger) } EXPORT_SYMBOL(nf_log_register); -void nf_log_unregister_pf(int pf) +void nf_log_unregister_pf(u_int8_t pf) { - if (pf >= NPROTO) + if (pf >= ARRAY_SIZE(nf_loggers)) return; mutex_lock(&nf_log_mutex); rcu_assign_pointer(nf_loggers[pf], NULL); @@ -63,7 +63,7 @@ void nf_log_unregister(const struct nf_logger *logger) int i; mutex_lock(&nf_log_mutex); - for (i = 0; i < NPROTO; i++) { + for (i = 0; i < ARRAY_SIZE(nf_loggers); i++) { if (nf_loggers[i] == logger) rcu_assign_pointer(nf_loggers[i], NULL); } @@ -73,7 +73,7 @@ void nf_log_unregister(const struct nf_logger *logger) } EXPORT_SYMBOL(nf_log_unregister); -void nf_log_packet(int pf, +void nf_log_packet(u_int8_t pf, unsigned int hooknum, const struct sk_buff *skb, const struct net_device *in, @@ -103,7 +103,7 @@ static void *seq_start(struct seq_file *seq, loff_t *pos) { rcu_read_lock(); - if (*pos >= NPROTO) + if (*pos >= ARRAY_SIZE(nf_loggers)) return NULL; return pos; @@ -113,7 +113,7 @@ static void *seq_next(struct seq_file *s, void *v, loff_t *pos) { (*pos)++; - if (*pos >= NPROTO) + if (*pos >= ARRAY_SIZE(nf_loggers)) return NULL; return pos; diff --git a/net/netfilter/nf_queue.c b/net/netfilter/nf_queue.c index 582ec3efc8a5..4f2310c93e01 100644 --- a/net/netfilter/nf_queue.c +++ b/net/netfilter/nf_queue.c @@ -16,17 +16,17 @@ * long term mutex. The handler must provide an an outfn() to accept packets * for queueing and must reinject all packets it receives, no matter what. */ -static const struct nf_queue_handler *queue_handler[NPROTO]; +static const struct nf_queue_handler *queue_handler[NFPROTO_NUMPROTO] __read_mostly; static DEFINE_MUTEX(queue_handler_mutex); /* return EBUSY when somebody else is registered, return EEXIST if the * same handler is registered, return 0 in case of success. */ -int nf_register_queue_handler(int pf, const struct nf_queue_handler *qh) +int nf_register_queue_handler(u_int8_t pf, const struct nf_queue_handler *qh) { int ret; - if (pf >= NPROTO) + if (pf >= ARRAY_SIZE(queue_handler)) return -EINVAL; mutex_lock(&queue_handler_mutex); @@ -45,9 +45,9 @@ int nf_register_queue_handler(int pf, const struct nf_queue_handler *qh) EXPORT_SYMBOL(nf_register_queue_handler); /* The caller must flush their queue before this */ -int nf_unregister_queue_handler(int pf, const struct nf_queue_handler *qh) +int nf_unregister_queue_handler(u_int8_t pf, const struct nf_queue_handler *qh) { - if (pf >= NPROTO) + if (pf >= ARRAY_SIZE(queue_handler)) return -EINVAL; mutex_lock(&queue_handler_mutex); @@ -67,10 +67,10 @@ EXPORT_SYMBOL(nf_unregister_queue_handler); void nf_unregister_queue_handlers(const struct nf_queue_handler *qh) { - int pf; + u_int8_t pf; mutex_lock(&queue_handler_mutex); - for (pf = 0; pf < NPROTO; pf++) { + for (pf = 0; pf < ARRAY_SIZE(queue_handler); pf++) { if (queue_handler[pf] == qh) rcu_assign_pointer(queue_handler[pf], NULL); } @@ -107,7 +107,7 @@ static void nf_queue_entry_release_refs(struct nf_queue_entry *entry) */ static int __nf_queue(struct sk_buff *skb, struct list_head *elem, - int pf, unsigned int hook, + u_int8_t pf, unsigned int hook, struct net_device *indev, struct net_device *outdev, int (*okfn)(struct sk_buff *), @@ -191,7 +191,7 @@ err: int nf_queue(struct sk_buff *skb, struct list_head *elem, - int pf, unsigned int hook, + u_int8_t pf, unsigned int hook, struct net_device *indev, struct net_device *outdev, int (*okfn)(struct sk_buff *), @@ -285,7 +285,7 @@ EXPORT_SYMBOL(nf_reinject); #ifdef CONFIG_PROC_FS static void *seq_start(struct seq_file *seq, loff_t *pos) { - if (*pos >= NPROTO) + if (*pos >= ARRAY_SIZE(queue_handler)) return NULL; return pos; @@ -295,7 +295,7 @@ static void *seq_next(struct seq_file *s, void *v, loff_t *pos) { (*pos)++; - if (*pos >= NPROTO) + if (*pos >= ARRAY_SIZE(queue_handler)) return NULL; return pos; diff --git a/net/netfilter/nf_sockopt.c b/net/netfilter/nf_sockopt.c index 01489681fa96..8ab829f86574 100644 --- a/net/netfilter/nf_sockopt.c +++ b/net/netfilter/nf_sockopt.c @@ -60,14 +60,11 @@ void nf_unregister_sockopt(struct nf_sockopt_ops *reg) } EXPORT_SYMBOL(nf_unregister_sockopt); -static struct nf_sockopt_ops *nf_sockopt_find(struct sock *sk, int pf, +static struct nf_sockopt_ops *nf_sockopt_find(struct sock *sk, u_int8_t pf, int val, int get) { struct nf_sockopt_ops *ops; - if (!net_eq(sock_net(sk), &init_net)) - return ERR_PTR(-ENOPROTOOPT); - if (mutex_lock_interruptible(&nf_sockopt_mutex) != 0) return ERR_PTR(-EINTR); @@ -96,7 +93,7 @@ out: } /* Call get/setsockopt() */ -static int nf_sockopt(struct sock *sk, int pf, int val, +static int nf_sockopt(struct sock *sk, u_int8_t pf, int val, char __user *opt, int *len, int get) { struct nf_sockopt_ops *ops; @@ -115,21 +112,22 @@ static int nf_sockopt(struct sock *sk, int pf, int val, return ret; } -int nf_setsockopt(struct sock *sk, int pf, int val, char __user *opt, +int nf_setsockopt(struct sock *sk, u_int8_t pf, int val, char __user *opt, int len) { return nf_sockopt(sk, pf, val, opt, &len, 0); } EXPORT_SYMBOL(nf_setsockopt); -int nf_getsockopt(struct sock *sk, int pf, int val, char __user *opt, int *len) +int nf_getsockopt(struct sock *sk, u_int8_t pf, int val, char __user *opt, + int *len) { return nf_sockopt(sk, pf, val, opt, len, 1); } EXPORT_SYMBOL(nf_getsockopt); #ifdef CONFIG_COMPAT -static int compat_nf_sockopt(struct sock *sk, int pf, int val, +static int compat_nf_sockopt(struct sock *sk, u_int8_t pf, int val, char __user *opt, int *len, int get) { struct nf_sockopt_ops *ops; @@ -155,14 +153,14 @@ static int compat_nf_sockopt(struct sock *sk, int pf, int val, return ret; } -int compat_nf_setsockopt(struct sock *sk, int pf, +int compat_nf_setsockopt(struct sock *sk, u_int8_t pf, int val, char __user *opt, int len) { return compat_nf_sockopt(sk, pf, val, opt, &len, 0); } EXPORT_SYMBOL(compat_nf_setsockopt); -int compat_nf_getsockopt(struct sock *sk, int pf, +int compat_nf_getsockopt(struct sock *sk, u_int8_t pf, int val, char __user *opt, int *len) { return compat_nf_sockopt(sk, pf, val, opt, len, 1); diff --git a/net/netfilter/nf_tproxy_core.c b/net/netfilter/nf_tproxy_core.c new file mode 100644 index 000000000000..fe34f4bf74cc --- /dev/null +++ b/net/netfilter/nf_tproxy_core.c @@ -0,0 +1,96 @@ +/* + * Transparent proxy support for Linux/iptables + * + * Copyright (c) 2006-2007 BalaBit IT Ltd. + * Author: Balazs Scheidler, Krisztian Kovacs + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#include <linux/version.h> +#include <linux/module.h> + +#include <linux/net.h> +#include <linux/if.h> +#include <linux/netdevice.h> +#include <net/udp.h> +#include <net/netfilter/nf_tproxy_core.h> + +struct sock * +nf_tproxy_get_sock_v4(struct net *net, const u8 protocol, + const __be32 saddr, const __be32 daddr, + const __be16 sport, const __be16 dport, + const struct net_device *in, bool listening_only) +{ + struct sock *sk; + + /* look up socket */ + switch (protocol) { + case IPPROTO_TCP: + if (listening_only) + sk = __inet_lookup_listener(net, &tcp_hashinfo, + daddr, ntohs(dport), + in->ifindex); + else + sk = __inet_lookup(net, &tcp_hashinfo, + saddr, sport, daddr, dport, + in->ifindex); + break; + case IPPROTO_UDP: + sk = udp4_lib_lookup(net, saddr, sport, daddr, dport, + in->ifindex); + break; + default: + WARN_ON(1); + sk = NULL; + } + + pr_debug("tproxy socket lookup: proto %u %08x:%u -> %08x:%u, listener only: %d, sock %p\n", + protocol, ntohl(saddr), ntohs(sport), ntohl(daddr), ntohs(dport), listening_only, sk); + + return sk; +} +EXPORT_SYMBOL_GPL(nf_tproxy_get_sock_v4); + +static void +nf_tproxy_destructor(struct sk_buff *skb) +{ + struct sock *sk = skb->sk; + + skb->sk = NULL; + skb->destructor = NULL; + + if (sk) + nf_tproxy_put_sock(sk); +} + +/* consumes sk */ +int +nf_tproxy_assign_sock(struct sk_buff *skb, struct sock *sk) +{ + if (inet_sk(sk)->transparent) { + skb->sk = sk; + skb->destructor = nf_tproxy_destructor; + return 1; + } else + nf_tproxy_put_sock(sk); + + return 0; +} +EXPORT_SYMBOL_GPL(nf_tproxy_assign_sock); + +static int __init nf_tproxy_init(void) +{ + pr_info("NF_TPROXY: Transparent proxy support initialized, version 4.1.0\n"); + pr_info("NF_TPROXY: Copyright (c) 2006-2007 BalaBit IT Ltd.\n"); + return 0; +} + +module_init(nf_tproxy_init); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Krisztian Kovacs"); +MODULE_DESCRIPTION("Transparent proxy support core routines"); diff --git a/net/netfilter/nfnetlink_log.c b/net/netfilter/nfnetlink_log.c index 9a35b57ab76d..41e0105d3828 100644 --- a/net/netfilter/nfnetlink_log.c +++ b/net/netfilter/nfnetlink_log.c @@ -359,7 +359,7 @@ static inline int __build_packet_message(struct nfulnl_instance *inst, const struct sk_buff *skb, unsigned int data_len, - unsigned int pf, + u_int8_t pf, unsigned int hooknum, const struct net_device *indev, const struct net_device *outdev, @@ -534,7 +534,7 @@ static struct nf_loginfo default_loginfo = { /* log handler for internal netfilter logging api */ static void -nfulnl_log_packet(unsigned int pf, +nfulnl_log_packet(u_int8_t pf, unsigned int hooknum, const struct sk_buff *skb, const struct net_device *in, diff --git a/net/netfilter/x_tables.c b/net/netfilter/x_tables.c index 5d75cd86ebb3..89837a4eef76 100644 --- a/net/netfilter/x_tables.c +++ b/net/netfilter/x_tables.c @@ -30,7 +30,7 @@ MODULE_LICENSE("GPL"); MODULE_AUTHOR("Harald Welte <laforge@netfilter.org>"); -MODULE_DESCRIPTION("[ip,ip6,arp]_tables backend module"); +MODULE_DESCRIPTION("{ip,ip6,arp,eb}_tables backend module"); #define SMP_ALIGN(x) (((x) + SMP_CACHE_BYTES-1) & ~(SMP_CACHE_BYTES-1)) @@ -58,17 +58,20 @@ static struct xt_af *xt; #define duprintf(format, args...) #endif -static const char *const xt_prefix[NPROTO] = { - [AF_INET] = "ip", - [AF_INET6] = "ip6", - [NF_ARP] = "arp", +static const char *const xt_prefix[NFPROTO_NUMPROTO] = { + [NFPROTO_UNSPEC] = "x", + [NFPROTO_IPV4] = "ip", + [NFPROTO_ARP] = "arp", + [NFPROTO_BRIDGE] = "eb", + [NFPROTO_IPV6] = "ip6", }; /* Registration hooks for targets. */ int xt_register_target(struct xt_target *target) { - int ret, af = target->family; + u_int8_t af = target->family; + int ret; ret = mutex_lock_interruptible(&xt[af].mutex); if (ret != 0) @@ -82,7 +85,7 @@ EXPORT_SYMBOL(xt_register_target); void xt_unregister_target(struct xt_target *target) { - int af = target->family; + u_int8_t af = target->family; mutex_lock(&xt[af].mutex); list_del(&target->list); @@ -123,7 +126,8 @@ EXPORT_SYMBOL(xt_unregister_targets); int xt_register_match(struct xt_match *match) { - int ret, af = match->family; + u_int8_t af = match->family; + int ret; ret = mutex_lock_interruptible(&xt[af].mutex); if (ret != 0) @@ -139,7 +143,7 @@ EXPORT_SYMBOL(xt_register_match); void xt_unregister_match(struct xt_match *match) { - int af = match->family; + u_int8_t af = match->family; mutex_lock(&xt[af].mutex); list_del(&match->list); @@ -185,7 +189,7 @@ EXPORT_SYMBOL(xt_unregister_matches); */ /* Find match, grabs ref. Returns ERR_PTR() on error. */ -struct xt_match *xt_find_match(int af, const char *name, u8 revision) +struct xt_match *xt_find_match(u8 af, const char *name, u8 revision) { struct xt_match *m; int err = 0; @@ -205,12 +209,17 @@ struct xt_match *xt_find_match(int af, const char *name, u8 revision) } } mutex_unlock(&xt[af].mutex); + + if (af != NFPROTO_UNSPEC) + /* Try searching again in the family-independent list */ + return xt_find_match(NFPROTO_UNSPEC, name, revision); + return ERR_PTR(err); } EXPORT_SYMBOL(xt_find_match); /* Find target, grabs ref. Returns ERR_PTR() on error. */ -struct xt_target *xt_find_target(int af, const char *name, u8 revision) +struct xt_target *xt_find_target(u8 af, const char *name, u8 revision) { struct xt_target *t; int err = 0; @@ -230,11 +239,16 @@ struct xt_target *xt_find_target(int af, const char *name, u8 revision) } } mutex_unlock(&xt[af].mutex); + + if (af != NFPROTO_UNSPEC) + /* Try searching again in the family-independent list */ + return xt_find_target(NFPROTO_UNSPEC, name, revision); + return ERR_PTR(err); } EXPORT_SYMBOL(xt_find_target); -struct xt_target *xt_request_find_target(int af, const char *name, u8 revision) +struct xt_target *xt_request_find_target(u8 af, const char *name, u8 revision) { struct xt_target *target; @@ -246,7 +260,7 @@ struct xt_target *xt_request_find_target(int af, const char *name, u8 revision) } EXPORT_SYMBOL_GPL(xt_request_find_target); -static int match_revfn(int af, const char *name, u8 revision, int *bestp) +static int match_revfn(u8 af, const char *name, u8 revision, int *bestp) { const struct xt_match *m; int have_rev = 0; @@ -262,7 +276,7 @@ static int match_revfn(int af, const char *name, u8 revision, int *bestp) return have_rev; } -static int target_revfn(int af, const char *name, u8 revision, int *bestp) +static int target_revfn(u8 af, const char *name, u8 revision, int *bestp) { const struct xt_target *t; int have_rev = 0; @@ -279,7 +293,7 @@ static int target_revfn(int af, const char *name, u8 revision, int *bestp) } /* Returns true or false (if no such extension at all) */ -int xt_find_revision(int af, const char *name, u8 revision, int target, +int xt_find_revision(u8 af, const char *name, u8 revision, int target, int *err) { int have_rev, best = -1; @@ -307,37 +321,47 @@ int xt_find_revision(int af, const char *name, u8 revision, int target, } EXPORT_SYMBOL_GPL(xt_find_revision); -int xt_check_match(const struct xt_match *match, unsigned short family, - unsigned int size, const char *table, unsigned int hook_mask, - unsigned short proto, int inv_proto) +int xt_check_match(struct xt_mtchk_param *par, + unsigned int size, u_int8_t proto, bool inv_proto) { - if (XT_ALIGN(match->matchsize) != size) { + if (XT_ALIGN(par->match->matchsize) != size && + par->match->matchsize != -1) { + /* + * ebt_among is exempt from centralized matchsize checking + * because it uses a dynamic-size data set. + */ printk("%s_tables: %s match: invalid size %Zu != %u\n", - xt_prefix[family], match->name, - XT_ALIGN(match->matchsize), size); + xt_prefix[par->family], par->match->name, + XT_ALIGN(par->match->matchsize), size); return -EINVAL; } - if (match->table && strcmp(match->table, table)) { + if (par->match->table != NULL && + strcmp(par->match->table, par->table) != 0) { printk("%s_tables: %s match: only valid in %s table, not %s\n", - xt_prefix[family], match->name, match->table, table); + xt_prefix[par->family], par->match->name, + par->match->table, par->table); return -EINVAL; } - if (match->hooks && (hook_mask & ~match->hooks) != 0) { - printk("%s_tables: %s match: bad hook_mask %u/%u\n", - xt_prefix[family], match->name, hook_mask, match->hooks); + if (par->match->hooks && (par->hook_mask & ~par->match->hooks) != 0) { + printk("%s_tables: %s match: bad hook_mask %#x/%#x\n", + xt_prefix[par->family], par->match->name, + par->hook_mask, par->match->hooks); return -EINVAL; } - if (match->proto && (match->proto != proto || inv_proto)) { + if (par->match->proto && (par->match->proto != proto || inv_proto)) { printk("%s_tables: %s match: only valid for protocol %u\n", - xt_prefix[family], match->name, match->proto); + xt_prefix[par->family], par->match->name, + par->match->proto); return -EINVAL; } + if (par->match->checkentry != NULL && !par->match->checkentry(par)) + return -EINVAL; return 0; } EXPORT_SYMBOL_GPL(xt_check_match); #ifdef CONFIG_COMPAT -int xt_compat_add_offset(int af, unsigned int offset, short delta) +int xt_compat_add_offset(u_int8_t af, unsigned int offset, short delta) { struct compat_delta *tmp; @@ -359,7 +383,7 @@ int xt_compat_add_offset(int af, unsigned int offset, short delta) } EXPORT_SYMBOL_GPL(xt_compat_add_offset); -void xt_compat_flush_offsets(int af) +void xt_compat_flush_offsets(u_int8_t af) { struct compat_delta *tmp, *next; @@ -373,7 +397,7 @@ void xt_compat_flush_offsets(int af) } EXPORT_SYMBOL_GPL(xt_compat_flush_offsets); -short xt_compat_calc_jump(int af, unsigned int offset) +short xt_compat_calc_jump(u_int8_t af, unsigned int offset) { struct compat_delta *tmp; short delta; @@ -448,32 +472,36 @@ int xt_compat_match_to_user(struct xt_entry_match *m, void __user **dstptr, EXPORT_SYMBOL_GPL(xt_compat_match_to_user); #endif /* CONFIG_COMPAT */ -int xt_check_target(const struct xt_target *target, unsigned short family, - unsigned int size, const char *table, unsigned int hook_mask, - unsigned short proto, int inv_proto) +int xt_check_target(struct xt_tgchk_param *par, + unsigned int size, u_int8_t proto, bool inv_proto) { - if (XT_ALIGN(target->targetsize) != size) { + if (XT_ALIGN(par->target->targetsize) != size) { printk("%s_tables: %s target: invalid size %Zu != %u\n", - xt_prefix[family], target->name, - XT_ALIGN(target->targetsize), size); + xt_prefix[par->family], par->target->name, + XT_ALIGN(par->target->targetsize), size); return -EINVAL; } - if (target->table && strcmp(target->table, table)) { + if (par->target->table != NULL && + strcmp(par->target->table, par->table) != 0) { printk("%s_tables: %s target: only valid in %s table, not %s\n", - xt_prefix[family], target->name, target->table, table); + xt_prefix[par->family], par->target->name, + par->target->table, par->table); return -EINVAL; } - if (target->hooks && (hook_mask & ~target->hooks) != 0) { - printk("%s_tables: %s target: bad hook_mask %u/%u\n", - xt_prefix[family], target->name, hook_mask, - target->hooks); + if (par->target->hooks && (par->hook_mask & ~par->target->hooks) != 0) { + printk("%s_tables: %s target: bad hook_mask %#x/%#x\n", + xt_prefix[par->family], par->target->name, + par->hook_mask, par->target->hooks); return -EINVAL; } - if (target->proto && (target->proto != proto || inv_proto)) { + if (par->target->proto && (par->target->proto != proto || inv_proto)) { printk("%s_tables: %s target: only valid for protocol %u\n", - xt_prefix[family], target->name, target->proto); + xt_prefix[par->family], par->target->name, + par->target->proto); return -EINVAL; } + if (par->target->checkentry != NULL && !par->target->checkentry(par)) + return -EINVAL; return 0; } EXPORT_SYMBOL_GPL(xt_check_target); @@ -590,7 +618,8 @@ void xt_free_table_info(struct xt_table_info *info) EXPORT_SYMBOL(xt_free_table_info); /* Find table by name, grabs mutex & ref. Returns ERR_PTR() on error. */ -struct xt_table *xt_find_table_lock(struct net *net, int af, const char *name) +struct xt_table *xt_find_table_lock(struct net *net, u_int8_t af, + const char *name) { struct xt_table *t; @@ -612,13 +641,13 @@ void xt_table_unlock(struct xt_table *table) EXPORT_SYMBOL_GPL(xt_table_unlock); #ifdef CONFIG_COMPAT -void xt_compat_lock(int af) +void xt_compat_lock(u_int8_t af) { mutex_lock(&xt[af].compat_mutex); } EXPORT_SYMBOL_GPL(xt_compat_lock); -void xt_compat_unlock(int af) +void xt_compat_unlock(u_int8_t af) { mutex_unlock(&xt[af].compat_mutex); } @@ -722,13 +751,13 @@ EXPORT_SYMBOL_GPL(xt_unregister_table); #ifdef CONFIG_PROC_FS struct xt_names_priv { struct seq_net_private p; - int af; + u_int8_t af; }; static void *xt_table_seq_start(struct seq_file *seq, loff_t *pos) { struct xt_names_priv *priv = seq->private; struct net *net = seq_file_net(seq); - int af = priv->af; + u_int8_t af = priv->af; mutex_lock(&xt[af].mutex); return seq_list_start(&net->xt.tables[af], *pos); @@ -738,7 +767,7 @@ static void *xt_table_seq_next(struct seq_file *seq, void *v, loff_t *pos) { struct xt_names_priv *priv = seq->private; struct net *net = seq_file_net(seq); - int af = priv->af; + u_int8_t af = priv->af; return seq_list_next(v, &net->xt.tables[af], pos); } @@ -746,7 +775,7 @@ static void *xt_table_seq_next(struct seq_file *seq, void *v, loff_t *pos) static void xt_table_seq_stop(struct seq_file *seq, void *v) { struct xt_names_priv *priv = seq->private; - int af = priv->af; + u_int8_t af = priv->af; mutex_unlock(&xt[af].mutex); } @@ -922,14 +951,14 @@ static const struct file_operations xt_target_ops = { #endif /* CONFIG_PROC_FS */ -int xt_proto_init(struct net *net, int af) +int xt_proto_init(struct net *net, u_int8_t af) { #ifdef CONFIG_PROC_FS char buf[XT_FUNCTION_MAXNAMELEN]; struct proc_dir_entry *proc; #endif - if (af >= NPROTO) + if (af >= ARRAY_SIZE(xt_prefix)) return -EINVAL; @@ -974,7 +1003,7 @@ out: } EXPORT_SYMBOL_GPL(xt_proto_init); -void xt_proto_fini(struct net *net, int af) +void xt_proto_fini(struct net *net, u_int8_t af) { #ifdef CONFIG_PROC_FS char buf[XT_FUNCTION_MAXNAMELEN]; @@ -998,7 +1027,7 @@ static int __net_init xt_net_init(struct net *net) { int i; - for (i = 0; i < NPROTO; i++) + for (i = 0; i < NFPROTO_NUMPROTO; i++) INIT_LIST_HEAD(&net->xt.tables[i]); return 0; } @@ -1011,11 +1040,11 @@ static int __init xt_init(void) { int i, rv; - xt = kmalloc(sizeof(struct xt_af) * NPROTO, GFP_KERNEL); + xt = kmalloc(sizeof(struct xt_af) * NFPROTO_NUMPROTO, GFP_KERNEL); if (!xt) return -ENOMEM; - for (i = 0; i < NPROTO; i++) { + for (i = 0; i < NFPROTO_NUMPROTO; i++) { mutex_init(&xt[i].mutex); #ifdef CONFIG_COMPAT mutex_init(&xt[i].compat_mutex); diff --git a/net/netfilter/xt_CLASSIFY.c b/net/netfilter/xt_CLASSIFY.c index 77a52bf83225..011bc80dd2a1 100644 --- a/net/netfilter/xt_CLASSIFY.c +++ b/net/netfilter/xt_CLASSIFY.c @@ -27,50 +27,34 @@ MODULE_ALIAS("ipt_CLASSIFY"); MODULE_ALIAS("ip6t_CLASSIFY"); static unsigned int -classify_tg(struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, unsigned int hooknum, - const struct xt_target *target, const void *targinfo) +classify_tg(struct sk_buff *skb, const struct xt_target_param *par) { - const struct xt_classify_target_info *clinfo = targinfo; + const struct xt_classify_target_info *clinfo = par->targinfo; skb->priority = clinfo->priority; return XT_CONTINUE; } -static struct xt_target classify_tg_reg[] __read_mostly = { - { - .family = AF_INET, - .name = "CLASSIFY", - .target = classify_tg, - .targetsize = sizeof(struct xt_classify_target_info), - .table = "mangle", - .hooks = (1 << NF_INET_LOCAL_OUT) | - (1 << NF_INET_FORWARD) | - (1 << NF_INET_POST_ROUTING), - .me = THIS_MODULE, - }, - { - .name = "CLASSIFY", - .family = AF_INET6, - .target = classify_tg, - .targetsize = sizeof(struct xt_classify_target_info), - .table = "mangle", - .hooks = (1 << NF_INET_LOCAL_OUT) | - (1 << NF_INET_FORWARD) | - (1 << NF_INET_POST_ROUTING), - .me = THIS_MODULE, - }, +static struct xt_target classify_tg_reg __read_mostly = { + .name = "CLASSIFY", + .revision = 0, + .family = NFPROTO_UNSPEC, + .table = "mangle", + .hooks = (1 << NF_INET_LOCAL_OUT) | (1 << NF_INET_FORWARD) | + (1 << NF_INET_POST_ROUTING), + .target = classify_tg, + .targetsize = sizeof(struct xt_classify_target_info), + .me = THIS_MODULE, }; static int __init classify_tg_init(void) { - return xt_register_targets(classify_tg_reg, - ARRAY_SIZE(classify_tg_reg)); + return xt_register_target(&classify_tg_reg); } static void __exit classify_tg_exit(void) { - xt_unregister_targets(classify_tg_reg, ARRAY_SIZE(classify_tg_reg)); + xt_unregister_target(&classify_tg_reg); } module_init(classify_tg_init); diff --git a/net/netfilter/xt_CONNMARK.c b/net/netfilter/xt_CONNMARK.c index 5fecfb4794b1..d6e5ab463277 100644 --- a/net/netfilter/xt_CONNMARK.c +++ b/net/netfilter/xt_CONNMARK.c @@ -36,11 +36,9 @@ MODULE_ALIAS("ip6t_CONNMARK"); #include <net/netfilter/nf_conntrack_ecache.h> static unsigned int -connmark_tg_v0(struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, unsigned int hooknum, - const struct xt_target *target, const void *targinfo) +connmark_tg_v0(struct sk_buff *skb, const struct xt_target_param *par) { - const struct xt_connmark_target_info *markinfo = targinfo; + const struct xt_connmark_target_info *markinfo = par->targinfo; struct nf_conn *ct; enum ip_conntrack_info ctinfo; u_int32_t diff; @@ -54,7 +52,7 @@ connmark_tg_v0(struct sk_buff *skb, const struct net_device *in, newmark = (ct->mark & ~markinfo->mask) | markinfo->mark; if (newmark != ct->mark) { ct->mark = newmark; - nf_conntrack_event_cache(IPCT_MARK, skb); + nf_conntrack_event_cache(IPCT_MARK, ct); } break; case XT_CONNMARK_SAVE: @@ -62,7 +60,7 @@ connmark_tg_v0(struct sk_buff *skb, const struct net_device *in, (skb->mark & markinfo->mask); if (ct->mark != newmark) { ct->mark = newmark; - nf_conntrack_event_cache(IPCT_MARK, skb); + nf_conntrack_event_cache(IPCT_MARK, ct); } break; case XT_CONNMARK_RESTORE: @@ -77,11 +75,9 @@ connmark_tg_v0(struct sk_buff *skb, const struct net_device *in, } static unsigned int -connmark_tg(struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, unsigned int hooknum, - const struct xt_target *target, const void *targinfo) +connmark_tg(struct sk_buff *skb, const struct xt_target_param *par) { - const struct xt_connmark_tginfo1 *info = targinfo; + const struct xt_connmark_tginfo1 *info = par->targinfo; enum ip_conntrack_info ctinfo; struct nf_conn *ct; u_int32_t newmark; @@ -95,7 +91,7 @@ connmark_tg(struct sk_buff *skb, const struct net_device *in, newmark = (ct->mark & ~info->ctmask) ^ info->ctmark; if (ct->mark != newmark) { ct->mark = newmark; - nf_conntrack_event_cache(IPCT_MARK, skb); + nf_conntrack_event_cache(IPCT_MARK, ct); } break; case XT_CONNMARK_SAVE: @@ -103,7 +99,7 @@ connmark_tg(struct sk_buff *skb, const struct net_device *in, (skb->mark & info->nfmask); if (ct->mark != newmark) { ct->mark = newmark; - nf_conntrack_event_cache(IPCT_MARK, skb); + nf_conntrack_event_cache(IPCT_MARK, ct); } break; case XT_CONNMARK_RESTORE: @@ -116,18 +112,15 @@ connmark_tg(struct sk_buff *skb, const struct net_device *in, return XT_CONTINUE; } -static bool -connmark_tg_check_v0(const char *tablename, const void *entry, - const struct xt_target *target, void *targinfo, - unsigned int hook_mask) +static bool connmark_tg_check_v0(const struct xt_tgchk_param *par) { - const struct xt_connmark_target_info *matchinfo = targinfo; + const struct xt_connmark_target_info *matchinfo = par->targinfo; if (matchinfo->mode == XT_CONNMARK_RESTORE) { - if (strcmp(tablename, "mangle") != 0) { + if (strcmp(par->table, "mangle") != 0) { printk(KERN_WARNING "CONNMARK: restore can only be " "called from \"mangle\" table, not \"%s\"\n", - tablename); + par->table); return false; } } @@ -135,31 +128,27 @@ connmark_tg_check_v0(const char *tablename, const void *entry, printk(KERN_WARNING "CONNMARK: Only supports 32bit mark\n"); return false; } - if (nf_ct_l3proto_try_module_get(target->family) < 0) { + if (nf_ct_l3proto_try_module_get(par->family) < 0) { printk(KERN_WARNING "can't load conntrack support for " - "proto=%u\n", target->family); + "proto=%u\n", par->family); return false; } return true; } -static bool -connmark_tg_check(const char *tablename, const void *entry, - const struct xt_target *target, void *targinfo, - unsigned int hook_mask) +static bool connmark_tg_check(const struct xt_tgchk_param *par) { - if (nf_ct_l3proto_try_module_get(target->family) < 0) { + if (nf_ct_l3proto_try_module_get(par->family) < 0) { printk(KERN_WARNING "cannot load conntrack support for " - "proto=%u\n", target->family); + "proto=%u\n", par->family); return false; } return true; } -static void -connmark_tg_destroy(const struct xt_target *target, void *targinfo) +static void connmark_tg_destroy(const struct xt_tgdtor_param *par) { - nf_ct_l3proto_module_put(target->family); + nf_ct_l3proto_module_put(par->family); } #ifdef CONFIG_COMPAT @@ -197,7 +186,7 @@ static struct xt_target connmark_tg_reg[] __read_mostly = { { .name = "CONNMARK", .revision = 0, - .family = AF_INET, + .family = NFPROTO_UNSPEC, .checkentry = connmark_tg_check_v0, .destroy = connmark_tg_destroy, .target = connmark_tg_v0, @@ -210,34 +199,9 @@ static struct xt_target connmark_tg_reg[] __read_mostly = { .me = THIS_MODULE }, { - .name = "CONNMARK", - .revision = 0, - .family = AF_INET6, - .checkentry = connmark_tg_check_v0, - .destroy = connmark_tg_destroy, - .target = connmark_tg_v0, - .targetsize = sizeof(struct xt_connmark_target_info), -#ifdef CONFIG_COMPAT - .compatsize = sizeof(struct compat_xt_connmark_target_info), - .compat_from_user = connmark_tg_compat_from_user_v0, - .compat_to_user = connmark_tg_compat_to_user_v0, -#endif - .me = THIS_MODULE - }, - { - .name = "CONNMARK", - .revision = 1, - .family = AF_INET, - .checkentry = connmark_tg_check, - .target = connmark_tg, - .targetsize = sizeof(struct xt_connmark_tginfo1), - .destroy = connmark_tg_destroy, - .me = THIS_MODULE, - }, - { .name = "CONNMARK", .revision = 1, - .family = AF_INET6, + .family = NFPROTO_UNSPEC, .checkentry = connmark_tg_check, .target = connmark_tg, .targetsize = sizeof(struct xt_connmark_tginfo1), diff --git a/net/netfilter/xt_CONNSECMARK.c b/net/netfilter/xt_CONNSECMARK.c index 76ca1f2421eb..b54c3756fdc3 100644 --- a/net/netfilter/xt_CONNSECMARK.c +++ b/net/netfilter/xt_CONNSECMARK.c @@ -43,7 +43,7 @@ static void secmark_save(const struct sk_buff *skb) ct = nf_ct_get(skb, &ctinfo); if (ct && !ct->secmark) { ct->secmark = skb->secmark; - nf_conntrack_event_cache(IPCT_SECMARK, skb); + nf_conntrack_event_cache(IPCT_SECMARK, ct); } } } @@ -65,11 +65,9 @@ static void secmark_restore(struct sk_buff *skb) } static unsigned int -connsecmark_tg(struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, unsigned int hooknum, - const struct xt_target *target, const void *targinfo) +connsecmark_tg(struct sk_buff *skb, const struct xt_target_param *par) { - const struct xt_connsecmark_target_info *info = targinfo; + const struct xt_connsecmark_target_info *info = par->targinfo; switch (info->mode) { case CONNSECMARK_SAVE: @@ -87,16 +85,14 @@ connsecmark_tg(struct sk_buff *skb, const struct net_device *in, return XT_CONTINUE; } -static bool -connsecmark_tg_check(const char *tablename, const void *entry, - const struct xt_target *target, void *targinfo, - unsigned int hook_mask) +static bool connsecmark_tg_check(const struct xt_tgchk_param *par) { - const struct xt_connsecmark_target_info *info = targinfo; + const struct xt_connsecmark_target_info *info = par->targinfo; - if (strcmp(tablename, "mangle") && strcmp(tablename, "security")) { + if (strcmp(par->table, "mangle") != 0 && + strcmp(par->table, "security") != 0) { printk(KERN_INFO PFX "target only valid in the \'mangle\' " - "or \'security\' tables, not \'%s\'.\n", tablename); + "or \'security\' tables, not \'%s\'.\n", par->table); return false; } @@ -110,51 +106,38 @@ connsecmark_tg_check(const char *tablename, const void *entry, return false; } - if (nf_ct_l3proto_try_module_get(target->family) < 0) { + if (nf_ct_l3proto_try_module_get(par->family) < 0) { printk(KERN_WARNING "can't load conntrack support for " - "proto=%u\n", target->family); + "proto=%u\n", par->family); return false; } return true; } -static void -connsecmark_tg_destroy(const struct xt_target *target, void *targinfo) +static void connsecmark_tg_destroy(const struct xt_tgdtor_param *par) { - nf_ct_l3proto_module_put(target->family); + nf_ct_l3proto_module_put(par->family); } -static struct xt_target connsecmark_tg_reg[] __read_mostly = { - { - .name = "CONNSECMARK", - .family = AF_INET, - .checkentry = connsecmark_tg_check, - .destroy = connsecmark_tg_destroy, - .target = connsecmark_tg, - .targetsize = sizeof(struct xt_connsecmark_target_info), - .me = THIS_MODULE, - }, - { - .name = "CONNSECMARK", - .family = AF_INET6, - .checkentry = connsecmark_tg_check, - .destroy = connsecmark_tg_destroy, - .target = connsecmark_tg, - .targetsize = sizeof(struct xt_connsecmark_target_info), - .me = THIS_MODULE, - }, +static struct xt_target connsecmark_tg_reg __read_mostly = { + .name = "CONNSECMARK", + .revision = 0, + .family = NFPROTO_UNSPEC, + .checkentry = connsecmark_tg_check, + .destroy = connsecmark_tg_destroy, + .target = connsecmark_tg, + .targetsize = sizeof(struct xt_connsecmark_target_info), + .me = THIS_MODULE, }; static int __init connsecmark_tg_init(void) { - return xt_register_targets(connsecmark_tg_reg, - ARRAY_SIZE(connsecmark_tg_reg)); + return xt_register_target(&connsecmark_tg_reg); } static void __exit connsecmark_tg_exit(void) { - xt_unregister_targets(connsecmark_tg_reg, - ARRAY_SIZE(connsecmark_tg_reg)); + xt_unregister_target(&connsecmark_tg_reg); } module_init(connsecmark_tg_init); diff --git a/net/netfilter/xt_DSCP.c b/net/netfilter/xt_DSCP.c index 97efd74c04fe..6a347e768f86 100644 --- a/net/netfilter/xt_DSCP.c +++ b/net/netfilter/xt_DSCP.c @@ -29,11 +29,9 @@ MODULE_ALIAS("ipt_TOS"); MODULE_ALIAS("ip6t_TOS"); static unsigned int -dscp_tg(struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, unsigned int hooknum, - const struct xt_target *target, const void *targinfo) +dscp_tg(struct sk_buff *skb, const struct xt_target_param *par) { - const struct xt_DSCP_info *dinfo = targinfo; + const struct xt_DSCP_info *dinfo = par->targinfo; u_int8_t dscp = ipv4_get_dsfield(ip_hdr(skb)) >> XT_DSCP_SHIFT; if (dscp != dinfo->dscp) { @@ -48,11 +46,9 @@ dscp_tg(struct sk_buff *skb, const struct net_device *in, } static unsigned int -dscp_tg6(struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, unsigned int hooknum, - const struct xt_target *target, const void *targinfo) +dscp_tg6(struct sk_buff *skb, const struct xt_target_param *par) { - const struct xt_DSCP_info *dinfo = targinfo; + const struct xt_DSCP_info *dinfo = par->targinfo; u_int8_t dscp = ipv6_get_dsfield(ipv6_hdr(skb)) >> XT_DSCP_SHIFT; if (dscp != dinfo->dscp) { @@ -65,26 +61,21 @@ dscp_tg6(struct sk_buff *skb, const struct net_device *in, return XT_CONTINUE; } -static bool -dscp_tg_check(const char *tablename, const void *e_void, - const struct xt_target *target, void *targinfo, - unsigned int hook_mask) +static bool dscp_tg_check(const struct xt_tgchk_param *par) { - const u_int8_t dscp = ((struct xt_DSCP_info *)targinfo)->dscp; + const struct xt_DSCP_info *info = par->targinfo; - if (dscp > XT_DSCP_MAX) { - printk(KERN_WARNING "DSCP: dscp %x out of range\n", dscp); + if (info->dscp > XT_DSCP_MAX) { + printk(KERN_WARNING "DSCP: dscp %x out of range\n", info->dscp); return false; } return true; } static unsigned int -tos_tg_v0(struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, unsigned int hooknum, - const struct xt_target *target, const void *targinfo) +tos_tg_v0(struct sk_buff *skb, const struct xt_target_param *par) { - const struct ipt_tos_target_info *info = targinfo; + const struct ipt_tos_target_info *info = par->targinfo; struct iphdr *iph = ip_hdr(skb); u_int8_t oldtos; @@ -101,12 +92,10 @@ tos_tg_v0(struct sk_buff *skb, const struct net_device *in, return XT_CONTINUE; } -static bool -tos_tg_check_v0(const char *tablename, const void *e_void, - const struct xt_target *target, void *targinfo, - unsigned int hook_mask) +static bool tos_tg_check_v0(const struct xt_tgchk_param *par) { - const u_int8_t tos = ((struct ipt_tos_target_info *)targinfo)->tos; + const struct ipt_tos_target_info *info = par->targinfo; + const uint8_t tos = info->tos; if (tos != IPTOS_LOWDELAY && tos != IPTOS_THROUGHPUT && tos != IPTOS_RELIABILITY && tos != IPTOS_MINCOST && @@ -119,11 +108,9 @@ tos_tg_check_v0(const char *tablename, const void *e_void, } static unsigned int -tos_tg(struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, unsigned int hooknum, - const struct xt_target *target, const void *targinfo) +tos_tg(struct sk_buff *skb, const struct xt_target_param *par) { - const struct xt_tos_target_info *info = targinfo; + const struct xt_tos_target_info *info = par->targinfo; struct iphdr *iph = ip_hdr(skb); u_int8_t orig, nv; @@ -141,11 +128,9 @@ tos_tg(struct sk_buff *skb, const struct net_device *in, } static unsigned int -tos_tg6(struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, unsigned int hooknum, - const struct xt_target *target, const void *targinfo) +tos_tg6(struct sk_buff *skb, const struct xt_target_param *par) { - const struct xt_tos_target_info *info = targinfo; + const struct xt_tos_target_info *info = par->targinfo; struct ipv6hdr *iph = ipv6_hdr(skb); u_int8_t orig, nv; @@ -165,7 +150,7 @@ tos_tg6(struct sk_buff *skb, const struct net_device *in, static struct xt_target dscp_tg_reg[] __read_mostly = { { .name = "DSCP", - .family = AF_INET, + .family = NFPROTO_IPV4, .checkentry = dscp_tg_check, .target = dscp_tg, .targetsize = sizeof(struct xt_DSCP_info), @@ -174,7 +159,7 @@ static struct xt_target dscp_tg_reg[] __read_mostly = { }, { .name = "DSCP", - .family = AF_INET6, + .family = NFPROTO_IPV6, .checkentry = dscp_tg_check, .target = dscp_tg6, .targetsize = sizeof(struct xt_DSCP_info), @@ -184,7 +169,7 @@ static struct xt_target dscp_tg_reg[] __read_mostly = { { .name = "TOS", .revision = 0, - .family = AF_INET, + .family = NFPROTO_IPV4, .table = "mangle", .target = tos_tg_v0, .targetsize = sizeof(struct ipt_tos_target_info), @@ -194,7 +179,7 @@ static struct xt_target dscp_tg_reg[] __read_mostly = { { .name = "TOS", .revision = 1, - .family = AF_INET, + .family = NFPROTO_IPV4, .table = "mangle", .target = tos_tg, .targetsize = sizeof(struct xt_tos_target_info), @@ -203,7 +188,7 @@ static struct xt_target dscp_tg_reg[] __read_mostly = { { .name = "TOS", .revision = 1, - .family = AF_INET6, + .family = NFPROTO_IPV6, .table = "mangle", .target = tos_tg6, .targetsize = sizeof(struct xt_tos_target_info), diff --git a/net/netfilter/xt_MARK.c b/net/netfilter/xt_MARK.c index f9ce20b58981..67574bcfb8ac 100644 --- a/net/netfilter/xt_MARK.c +++ b/net/netfilter/xt_MARK.c @@ -25,22 +25,18 @@ MODULE_ALIAS("ipt_MARK"); MODULE_ALIAS("ip6t_MARK"); static unsigned int -mark_tg_v0(struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, unsigned int hooknum, - const struct xt_target *target, const void *targinfo) +mark_tg_v0(struct sk_buff *skb, const struct xt_target_param *par) { - const struct xt_mark_target_info *markinfo = targinfo; + const struct xt_mark_target_info *markinfo = par->targinfo; skb->mark = markinfo->mark; return XT_CONTINUE; } static unsigned int -mark_tg_v1(struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, unsigned int hooknum, - const struct xt_target *target, const void *targinfo) +mark_tg_v1(struct sk_buff *skb, const struct xt_target_param *par) { - const struct xt_mark_target_info_v1 *markinfo = targinfo; + const struct xt_mark_target_info_v1 *markinfo = par->targinfo; int mark = 0; switch (markinfo->mode) { @@ -62,22 +58,17 @@ mark_tg_v1(struct sk_buff *skb, const struct net_device *in, } static unsigned int -mark_tg(struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, unsigned int hooknum, - const struct xt_target *target, const void *targinfo) +mark_tg(struct sk_buff *skb, const struct xt_target_param *par) { - const struct xt_mark_tginfo2 *info = targinfo; + const struct xt_mark_tginfo2 *info = par->targinfo; skb->mark = (skb->mark & ~info->mask) ^ info->mark; return XT_CONTINUE; } -static bool -mark_tg_check_v0(const char *tablename, const void *entry, - const struct xt_target *target, void *targinfo, - unsigned int hook_mask) +static bool mark_tg_check_v0(const struct xt_tgchk_param *par) { - const struct xt_mark_target_info *markinfo = targinfo; + const struct xt_mark_target_info *markinfo = par->targinfo; if (markinfo->mark > 0xffffffff) { printk(KERN_WARNING "MARK: Only supports 32bit wide mark\n"); @@ -86,12 +77,9 @@ mark_tg_check_v0(const char *tablename, const void *entry, return true; } -static bool -mark_tg_check_v1(const char *tablename, const void *entry, - const struct xt_target *target, void *targinfo, - unsigned int hook_mask) +static bool mark_tg_check_v1(const struct xt_tgchk_param *par) { - const struct xt_mark_target_info_v1 *markinfo = targinfo; + const struct xt_mark_target_info_v1 *markinfo = par->targinfo; if (markinfo->mode != XT_MARK_SET && markinfo->mode != XT_MARK_AND @@ -161,7 +149,7 @@ static int mark_tg_compat_to_user_v1(void __user *dst, void *src) static struct xt_target mark_tg_reg[] __read_mostly = { { .name = "MARK", - .family = AF_INET, + .family = NFPROTO_UNSPEC, .revision = 0, .checkentry = mark_tg_check_v0, .target = mark_tg_v0, @@ -176,7 +164,7 @@ static struct xt_target mark_tg_reg[] __read_mostly = { }, { .name = "MARK", - .family = AF_INET, + .family = NFPROTO_UNSPEC, .revision = 1, .checkentry = mark_tg_check_v1, .target = mark_tg_v1, @@ -190,47 +178,9 @@ static struct xt_target mark_tg_reg[] __read_mostly = { .me = THIS_MODULE, }, { - .name = "MARK", - .family = AF_INET6, - .revision = 0, - .checkentry = mark_tg_check_v0, - .target = mark_tg_v0, - .targetsize = sizeof(struct xt_mark_target_info), -#ifdef CONFIG_COMPAT - .compatsize = sizeof(struct compat_xt_mark_target_info), - .compat_from_user = mark_tg_compat_from_user_v0, - .compat_to_user = mark_tg_compat_to_user_v0, -#endif - .table = "mangle", - .me = THIS_MODULE, - }, - { - .name = "MARK", - .family = AF_INET6, - .revision = 1, - .checkentry = mark_tg_check_v1, - .target = mark_tg_v1, - .targetsize = sizeof(struct xt_mark_target_info_v1), -#ifdef CONFIG_COMPAT - .compatsize = sizeof(struct compat_xt_mark_target_info_v1), - .compat_from_user = mark_tg_compat_from_user_v1, - .compat_to_user = mark_tg_compat_to_user_v1, -#endif - .table = "mangle", - .me = THIS_MODULE, - }, - { - .name = "MARK", - .revision = 2, - .family = AF_INET, - .target = mark_tg, - .targetsize = sizeof(struct xt_mark_tginfo2), - .me = THIS_MODULE, - }, - { .name = "MARK", .revision = 2, - .family = AF_INET6, + .family = NFPROTO_UNSPEC, .target = mark_tg, .targetsize = sizeof(struct xt_mark_tginfo2), .me = THIS_MODULE, diff --git a/net/netfilter/xt_NFLOG.c b/net/netfilter/xt_NFLOG.c index 19ae8efae655..50e3a52d3b31 100644 --- a/net/netfilter/xt_NFLOG.c +++ b/net/netfilter/xt_NFLOG.c @@ -21,11 +21,9 @@ MODULE_ALIAS("ipt_NFLOG"); MODULE_ALIAS("ip6t_NFLOG"); static unsigned int -nflog_tg(struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, unsigned int hooknum, - const struct xt_target *target, const void *targinfo) +nflog_tg(struct sk_buff *skb, const struct xt_target_param *par) { - const struct xt_nflog_info *info = targinfo; + const struct xt_nflog_info *info = par->targinfo; struct nf_loginfo li; li.type = NF_LOG_TYPE_ULOG; @@ -33,17 +31,14 @@ nflog_tg(struct sk_buff *skb, const struct net_device *in, li.u.ulog.group = info->group; li.u.ulog.qthreshold = info->threshold; - nf_log_packet(target->family, hooknum, skb, in, out, &li, - "%s", info->prefix); + nf_log_packet(par->family, par->hooknum, skb, par->in, + par->out, &li, "%s", info->prefix); return XT_CONTINUE; } -static bool -nflog_tg_check(const char *tablename, const void *entry, - const struct xt_target *target, void *targetinfo, - unsigned int hookmask) +static bool nflog_tg_check(const struct xt_tgchk_param *par) { - const struct xt_nflog_info *info = targetinfo; + const struct xt_nflog_info *info = par->targinfo; if (info->flags & ~XT_NFLOG_MASK) return false; @@ -52,33 +47,24 @@ nflog_tg_check(const char *tablename, const void *entry, return true; } -static struct xt_target nflog_tg_reg[] __read_mostly = { - { - .name = "NFLOG", - .family = AF_INET, - .checkentry = nflog_tg_check, - .target = nflog_tg, - .targetsize = sizeof(struct xt_nflog_info), - .me = THIS_MODULE, - }, - { - .name = "NFLOG", - .family = AF_INET6, - .checkentry = nflog_tg_check, - .target = nflog_tg, - .targetsize = sizeof(struct xt_nflog_info), - .me = THIS_MODULE, - }, +static struct xt_target nflog_tg_reg __read_mostly = { + .name = "NFLOG", + .revision = 0, + .family = NFPROTO_UNSPEC, + .checkentry = nflog_tg_check, + .target = nflog_tg, + .targetsize = sizeof(struct xt_nflog_info), + .me = THIS_MODULE, }; static int __init nflog_tg_init(void) { - return xt_register_targets(nflog_tg_reg, ARRAY_SIZE(nflog_tg_reg)); + return xt_register_target(&nflog_tg_reg); } static void __exit nflog_tg_exit(void) { - xt_unregister_targets(nflog_tg_reg, ARRAY_SIZE(nflog_tg_reg)); + xt_unregister_target(&nflog_tg_reg); } module_init(nflog_tg_init); diff --git a/net/netfilter/xt_NFQUEUE.c b/net/netfilter/xt_NFQUEUE.c index beb24d19a56f..2cc1fff49307 100644 --- a/net/netfilter/xt_NFQUEUE.c +++ b/net/netfilter/xt_NFQUEUE.c @@ -24,11 +24,9 @@ MODULE_ALIAS("ip6t_NFQUEUE"); MODULE_ALIAS("arpt_NFQUEUE"); static unsigned int -nfqueue_tg(struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, unsigned int hooknum, - const struct xt_target *target, const void *targinfo) +nfqueue_tg(struct sk_buff *skb, const struct xt_target_param *par) { - const struct xt_NFQ_info *tinfo = targinfo; + const struct xt_NFQ_info *tinfo = par->targinfo; return NF_QUEUE_NR(tinfo->queuenum); } @@ -36,14 +34,14 @@ nfqueue_tg(struct sk_buff *skb, const struct net_device *in, static struct xt_target nfqueue_tg_reg[] __read_mostly = { { .name = "NFQUEUE", - .family = AF_INET, + .family = NFPROTO_IPV4, .target = nfqueue_tg, .targetsize = sizeof(struct xt_NFQ_info), .me = THIS_MODULE, }, { .name = "NFQUEUE", - .family = AF_INET6, + .family = NFPROTO_IPV6, .target = nfqueue_tg, .targetsize = sizeof(struct xt_NFQ_info), .me = THIS_MODULE, diff --git a/net/netfilter/xt_NOTRACK.c b/net/netfilter/xt_NOTRACK.c index 6c9de611eb8d..e7a0a54fd4ea 100644 --- a/net/netfilter/xt_NOTRACK.c +++ b/net/netfilter/xt_NOTRACK.c @@ -13,9 +13,7 @@ MODULE_ALIAS("ipt_NOTRACK"); MODULE_ALIAS("ip6t_NOTRACK"); static unsigned int -notrack_tg(struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, unsigned int hooknum, - const struct xt_target *target, const void *targinfo) +notrack_tg(struct sk_buff *skb, const struct xt_target_param *par) { /* Previously seen (loopback)? Ignore. */ if (skb->nfct != NULL) @@ -32,31 +30,23 @@ notrack_tg(struct sk_buff *skb, const struct net_device *in, return XT_CONTINUE; } -static struct xt_target notrack_tg_reg[] __read_mostly = { - { - .name = "NOTRACK", - .family = AF_INET, - .target = notrack_tg, - .table = "raw", - .me = THIS_MODULE, - }, - { - .name = "NOTRACK", - .family = AF_INET6, - .target = notrack_tg, - .table = "raw", - .me = THIS_MODULE, - }, +static struct xt_target notrack_tg_reg __read_mostly = { + .name = "NOTRACK", + .revision = 0, + .family = NFPROTO_UNSPEC, + .target = notrack_tg, + .table = "raw", + .me = THIS_MODULE, }; static int __init notrack_tg_init(void) { - return xt_register_targets(notrack_tg_reg, ARRAY_SIZE(notrack_tg_reg)); + return xt_register_target(¬rack_tg_reg); } static void __exit notrack_tg_exit(void) { - xt_unregister_targets(notrack_tg_reg, ARRAY_SIZE(notrack_tg_reg)); + xt_unregister_target(¬rack_tg_reg); } module_init(notrack_tg_init); diff --git a/net/netfilter/xt_RATEEST.c b/net/netfilter/xt_RATEEST.c index 64d6ad380293..43f5676b1af4 100644 --- a/net/netfilter/xt_RATEEST.c +++ b/net/netfilter/xt_RATEEST.c @@ -71,14 +71,9 @@ void xt_rateest_put(struct xt_rateest *est) EXPORT_SYMBOL_GPL(xt_rateest_put); static unsigned int -xt_rateest_tg(struct sk_buff *skb, - const struct net_device *in, - const struct net_device *out, - unsigned int hooknum, - const struct xt_target *target, - const void *targinfo) +xt_rateest_tg(struct sk_buff *skb, const struct xt_target_param *par) { - const struct xt_rateest_target_info *info = targinfo; + const struct xt_rateest_target_info *info = par->targinfo; struct gnet_stats_basic *stats = &info->est->bstats; spin_lock_bh(&info->est->lock); @@ -89,14 +84,9 @@ xt_rateest_tg(struct sk_buff *skb, return XT_CONTINUE; } -static bool -xt_rateest_tg_checkentry(const char *tablename, - const void *entry, - const struct xt_target *target, - void *targinfo, - unsigned int hook_mask) +static bool xt_rateest_tg_checkentry(const struct xt_tgchk_param *par) { - struct xt_rateest_target_info *info = targinfo; + struct xt_rateest_target_info *info = par->targinfo; struct xt_rateest *est; struct { struct nlattr opt; @@ -149,33 +139,22 @@ err1: return false; } -static void xt_rateest_tg_destroy(const struct xt_target *target, - void *targinfo) +static void xt_rateest_tg_destroy(const struct xt_tgdtor_param *par) { - struct xt_rateest_target_info *info = targinfo; + struct xt_rateest_target_info *info = par->targinfo; xt_rateest_put(info->est); } -static struct xt_target xt_rateest_target[] __read_mostly = { - { - .family = AF_INET, - .name = "RATEEST", - .target = xt_rateest_tg, - .checkentry = xt_rateest_tg_checkentry, - .destroy = xt_rateest_tg_destroy, - .targetsize = sizeof(struct xt_rateest_target_info), - .me = THIS_MODULE, - }, - { - .family = AF_INET6, - .name = "RATEEST", - .target = xt_rateest_tg, - .checkentry = xt_rateest_tg_checkentry, - .destroy = xt_rateest_tg_destroy, - .targetsize = sizeof(struct xt_rateest_target_info), - .me = THIS_MODULE, - }, +static struct xt_target xt_rateest_tg_reg __read_mostly = { + .name = "RATEEST", + .revision = 0, + .family = NFPROTO_UNSPEC, + .target = xt_rateest_tg, + .checkentry = xt_rateest_tg_checkentry, + .destroy = xt_rateest_tg_destroy, + .targetsize = sizeof(struct xt_rateest_target_info), + .me = THIS_MODULE, }; static int __init xt_rateest_tg_init(void) @@ -186,13 +165,12 @@ static int __init xt_rateest_tg_init(void) INIT_HLIST_HEAD(&rateest_hash[i]); get_random_bytes(&jhash_rnd, sizeof(jhash_rnd)); - return xt_register_targets(xt_rateest_target, - ARRAY_SIZE(xt_rateest_target)); + return xt_register_target(&xt_rateest_tg_reg); } static void __exit xt_rateest_tg_fini(void) { - xt_unregister_targets(xt_rateest_target, ARRAY_SIZE(xt_rateest_target)); + xt_unregister_target(&xt_rateest_tg_reg); } diff --git a/net/netfilter/xt_SECMARK.c b/net/netfilter/xt_SECMARK.c index 94f87ee7552b..7a6f9e6f5dfa 100644 --- a/net/netfilter/xt_SECMARK.c +++ b/net/netfilter/xt_SECMARK.c @@ -29,12 +29,10 @@ MODULE_ALIAS("ip6t_SECMARK"); static u8 mode; static unsigned int -secmark_tg(struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, unsigned int hooknum, - const struct xt_target *target, const void *targinfo) +secmark_tg(struct sk_buff *skb, const struct xt_target_param *par) { u32 secmark = 0; - const struct xt_secmark_target_info *info = targinfo; + const struct xt_secmark_target_info *info = par->targinfo; BUG_ON(info->mode != mode); @@ -82,16 +80,14 @@ static bool checkentry_selinux(struct xt_secmark_target_info *info) return true; } -static bool -secmark_tg_check(const char *tablename, const void *entry, - const struct xt_target *target, void *targinfo, - unsigned int hook_mask) +static bool secmark_tg_check(const struct xt_tgchk_param *par) { - struct xt_secmark_target_info *info = targinfo; + struct xt_secmark_target_info *info = par->targinfo; - if (strcmp(tablename, "mangle") && strcmp(tablename, "security")) { + if (strcmp(par->table, "mangle") != 0 && + strcmp(par->table, "security") != 0) { printk(KERN_INFO PFX "target only valid in the \'mangle\' " - "or \'security\' tables, not \'%s\'.\n", tablename); + "or \'security\' tables, not \'%s\'.\n", par->table); return false; } @@ -117,7 +113,7 @@ secmark_tg_check(const char *tablename, const void *entry, return true; } -static void secmark_tg_destroy(const struct xt_target *target, void *targinfo) +static void secmark_tg_destroy(const struct xt_tgdtor_param *par) { switch (mode) { case SECMARK_MODE_SEL: @@ -125,35 +121,25 @@ static void secmark_tg_destroy(const struct xt_target *target, void *targinfo) } } -static struct xt_target secmark_tg_reg[] __read_mostly = { - { - .name = "SECMARK", - .family = AF_INET, - .checkentry = secmark_tg_check, - .destroy = secmark_tg_destroy, - .target = secmark_tg, - .targetsize = sizeof(struct xt_secmark_target_info), - .me = THIS_MODULE, - }, - { - .name = "SECMARK", - .family = AF_INET6, - .checkentry = secmark_tg_check, - .destroy = secmark_tg_destroy, - .target = secmark_tg, - .targetsize = sizeof(struct xt_secmark_target_info), - .me = THIS_MODULE, - }, +static struct xt_target secmark_tg_reg __read_mostly = { + .name = "SECMARK", + .revision = 0, + .family = NFPROTO_UNSPEC, + .checkentry = secmark_tg_check, + .destroy = secmark_tg_destroy, + .target = secmark_tg, + .targetsize = sizeof(struct xt_secmark_target_info), + .me = THIS_MODULE, }; static int __init secmark_tg_init(void) { - return xt_register_targets(secmark_tg_reg, ARRAY_SIZE(secmark_tg_reg)); + return xt_register_target(&secmark_tg_reg); } static void __exit secmark_tg_exit(void) { - xt_unregister_targets(secmark_tg_reg, ARRAY_SIZE(secmark_tg_reg)); + xt_unregister_target(&secmark_tg_reg); } module_init(secmark_tg_init); diff --git a/net/netfilter/xt_TCPMSS.c b/net/netfilter/xt_TCPMSS.c index beb5094703cb..4f3b1f808795 100644 --- a/net/netfilter/xt_TCPMSS.c +++ b/net/netfilter/xt_TCPMSS.c @@ -174,15 +174,13 @@ static u_int32_t tcpmss_reverse_mtu(const struct sk_buff *skb, } static unsigned int -tcpmss_tg4(struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, unsigned int hooknum, - const struct xt_target *target, const void *targinfo) +tcpmss_tg4(struct sk_buff *skb, const struct xt_target_param *par) { struct iphdr *iph = ip_hdr(skb); __be16 newlen; int ret; - ret = tcpmss_mangle_packet(skb, targinfo, + ret = tcpmss_mangle_packet(skb, par->targinfo, tcpmss_reverse_mtu(skb, PF_INET), iph->ihl * 4, sizeof(*iph) + sizeof(struct tcphdr)); @@ -199,9 +197,7 @@ tcpmss_tg4(struct sk_buff *skb, const struct net_device *in, #if defined(CONFIG_IP6_NF_IPTABLES) || defined(CONFIG_IP6_NF_IPTABLES_MODULE) static unsigned int -tcpmss_tg6(struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, unsigned int hooknum, - const struct xt_target *target, const void *targinfo) +tcpmss_tg6(struct sk_buff *skb, const struct xt_target_param *par) { struct ipv6hdr *ipv6h = ipv6_hdr(skb); u8 nexthdr; @@ -212,7 +208,7 @@ tcpmss_tg6(struct sk_buff *skb, const struct net_device *in, tcphoff = ipv6_skip_exthdr(skb, sizeof(*ipv6h), &nexthdr); if (tcphoff < 0) return NF_DROP; - ret = tcpmss_mangle_packet(skb, targinfo, + ret = tcpmss_mangle_packet(skb, par->targinfo, tcpmss_reverse_mtu(skb, PF_INET6), tcphoff, sizeof(*ipv6h) + sizeof(struct tcphdr)); @@ -241,16 +237,13 @@ static inline bool find_syn_match(const struct xt_entry_match *m) return false; } -static bool -tcpmss_tg4_check(const char *tablename, const void *entry, - const struct xt_target *target, void *targinfo, - unsigned int hook_mask) +static bool tcpmss_tg4_check(const struct xt_tgchk_param *par) { - const struct xt_tcpmss_info *info = targinfo; - const struct ipt_entry *e = entry; + const struct xt_tcpmss_info *info = par->targinfo; + const struct ipt_entry *e = par->entryinfo; if (info->mss == XT_TCPMSS_CLAMP_PMTU && - (hook_mask & ~((1 << NF_INET_FORWARD) | + (par->hook_mask & ~((1 << NF_INET_FORWARD) | (1 << NF_INET_LOCAL_OUT) | (1 << NF_INET_POST_ROUTING))) != 0) { printk("xt_TCPMSS: path-MTU clamping only supported in " @@ -264,16 +257,13 @@ tcpmss_tg4_check(const char *tablename, const void *entry, } #if defined(CONFIG_IP6_NF_IPTABLES) || defined(CONFIG_IP6_NF_IPTABLES_MODULE) -static bool -tcpmss_tg6_check(const char *tablename, const void *entry, - const struct xt_target *target, void *targinfo, - unsigned int hook_mask) +static bool tcpmss_tg6_check(const struct xt_tgchk_param *par) { - const struct xt_tcpmss_info *info = targinfo; - const struct ip6t_entry *e = entry; + const struct xt_tcpmss_info *info = par->targinfo; + const struct ip6t_entry *e = par->entryinfo; if (info->mss == XT_TCPMSS_CLAMP_PMTU && - (hook_mask & ~((1 << NF_INET_FORWARD) | + (par->hook_mask & ~((1 << NF_INET_FORWARD) | (1 << NF_INET_LOCAL_OUT) | (1 << NF_INET_POST_ROUTING))) != 0) { printk("xt_TCPMSS: path-MTU clamping only supported in " @@ -289,7 +279,7 @@ tcpmss_tg6_check(const char *tablename, const void *entry, static struct xt_target tcpmss_tg_reg[] __read_mostly = { { - .family = AF_INET, + .family = NFPROTO_IPV4, .name = "TCPMSS", .checkentry = tcpmss_tg4_check, .target = tcpmss_tg4, @@ -299,7 +289,7 @@ static struct xt_target tcpmss_tg_reg[] __read_mostly = { }, #if defined(CONFIG_IP6_NF_IPTABLES) || defined(CONFIG_IP6_NF_IPTABLES_MODULE) { - .family = AF_INET6, + .family = NFPROTO_IPV6, .name = "TCPMSS", .checkentry = tcpmss_tg6_check, .target = tcpmss_tg6, diff --git a/net/netfilter/xt_TCPOPTSTRIP.c b/net/netfilter/xt_TCPOPTSTRIP.c index 9685b6fcbc81..9dd8c8ef63eb 100644 --- a/net/netfilter/xt_TCPOPTSTRIP.c +++ b/net/netfilter/xt_TCPOPTSTRIP.c @@ -75,19 +75,15 @@ tcpoptstrip_mangle_packet(struct sk_buff *skb, } static unsigned int -tcpoptstrip_tg4(struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, unsigned int hooknum, - const struct xt_target *target, const void *targinfo) +tcpoptstrip_tg4(struct sk_buff *skb, const struct xt_target_param *par) { - return tcpoptstrip_mangle_packet(skb, targinfo, ip_hdrlen(skb), + return tcpoptstrip_mangle_packet(skb, par->targinfo, ip_hdrlen(skb), sizeof(struct iphdr) + sizeof(struct tcphdr)); } #if defined(CONFIG_IP6_NF_MANGLE) || defined(CONFIG_IP6_NF_MANGLE_MODULE) static unsigned int -tcpoptstrip_tg6(struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, unsigned int hooknum, - const struct xt_target *target, const void *targinfo) +tcpoptstrip_tg6(struct sk_buff *skb, const struct xt_target_param *par) { struct ipv6hdr *ipv6h = ipv6_hdr(skb); int tcphoff; @@ -98,7 +94,7 @@ tcpoptstrip_tg6(struct sk_buff *skb, const struct net_device *in, if (tcphoff < 0) return NF_DROP; - return tcpoptstrip_mangle_packet(skb, targinfo, tcphoff, + return tcpoptstrip_mangle_packet(skb, par->targinfo, tcphoff, sizeof(*ipv6h) + sizeof(struct tcphdr)); } #endif @@ -106,7 +102,7 @@ tcpoptstrip_tg6(struct sk_buff *skb, const struct net_device *in, static struct xt_target tcpoptstrip_tg_reg[] __read_mostly = { { .name = "TCPOPTSTRIP", - .family = AF_INET, + .family = NFPROTO_IPV4, .table = "mangle", .proto = IPPROTO_TCP, .target = tcpoptstrip_tg4, @@ -116,7 +112,7 @@ static struct xt_target tcpoptstrip_tg_reg[] __read_mostly = { #if defined(CONFIG_IP6_NF_MANGLE) || defined(CONFIG_IP6_NF_MANGLE_MODULE) { .name = "TCPOPTSTRIP", - .family = AF_INET6, + .family = NFPROTO_IPV6, .table = "mangle", .proto = IPPROTO_TCP, .target = tcpoptstrip_tg6, diff --git a/net/netfilter/xt_TPROXY.c b/net/netfilter/xt_TPROXY.c new file mode 100644 index 000000000000..1340c2fa3621 --- /dev/null +++ b/net/netfilter/xt_TPROXY.c @@ -0,0 +1,102 @@ +/* + * Transparent proxy support for Linux/iptables + * + * Copyright (c) 2006-2007 BalaBit IT Ltd. + * Author: Balazs Scheidler, Krisztian Kovacs + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#include <linux/module.h> +#include <linux/skbuff.h> +#include <linux/ip.h> +#include <net/checksum.h> +#include <net/udp.h> +#include <net/inet_sock.h> + +#include <linux/netfilter/x_tables.h> +#include <linux/netfilter_ipv4/ip_tables.h> +#include <linux/netfilter/xt_TPROXY.h> + +#include <net/netfilter/ipv4/nf_defrag_ipv4.h> +#include <net/netfilter/nf_tproxy_core.h> + +static unsigned int +tproxy_tg(struct sk_buff *skb, const struct xt_target_param *par) +{ + const struct iphdr *iph = ip_hdr(skb); + const struct xt_tproxy_target_info *tgi = par->targinfo; + struct udphdr _hdr, *hp; + struct sock *sk; + + hp = skb_header_pointer(skb, ip_hdrlen(skb), sizeof(_hdr), &_hdr); + if (hp == NULL) + return NF_DROP; + + sk = nf_tproxy_get_sock_v4(dev_net(skb->dev), iph->protocol, + iph->saddr, tgi->laddr ? tgi->laddr : iph->daddr, + hp->source, tgi->lport ? tgi->lport : hp->dest, + par->in, true); + + /* NOTE: assign_sock consumes our sk reference */ + if (sk && nf_tproxy_assign_sock(skb, sk)) { + /* This should be in a separate target, but we don't do multiple + targets on the same rule yet */ + skb->mark = (skb->mark & ~tgi->mark_mask) ^ tgi->mark_value; + + pr_debug("redirecting: proto %u %08x:%u -> %08x:%u, mark: %x\n", + iph->protocol, ntohl(iph->daddr), ntohs(hp->dest), + ntohl(tgi->laddr), ntohs(tgi->lport), skb->mark); + return NF_ACCEPT; + } + + pr_debug("no socket, dropping: proto %u %08x:%u -> %08x:%u, mark: %x\n", + iph->protocol, ntohl(iph->daddr), ntohs(hp->dest), + ntohl(tgi->laddr), ntohs(tgi->lport), skb->mark); + return NF_DROP; +} + +static bool tproxy_tg_check(const struct xt_tgchk_param *par) +{ + const struct ipt_ip *i = par->entryinfo; + + if ((i->proto == IPPROTO_TCP || i->proto == IPPROTO_UDP) + && !(i->invflags & IPT_INV_PROTO)) + return true; + + pr_info("xt_TPROXY: Can be used only in combination with " + "either -p tcp or -p udp\n"); + return false; +} + +static struct xt_target tproxy_tg_reg __read_mostly = { + .name = "TPROXY", + .family = AF_INET, + .table = "mangle", + .target = tproxy_tg, + .targetsize = sizeof(struct xt_tproxy_target_info), + .checkentry = tproxy_tg_check, + .hooks = 1 << NF_INET_PRE_ROUTING, + .me = THIS_MODULE, +}; + +static int __init tproxy_tg_init(void) +{ + nf_defrag_ipv4_enable(); + return xt_register_target(&tproxy_tg_reg); +} + +static void __exit tproxy_tg_exit(void) +{ + xt_unregister_target(&tproxy_tg_reg); +} + +module_init(tproxy_tg_init); +module_exit(tproxy_tg_exit); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Krisztian Kovacs"); +MODULE_DESCRIPTION("Netfilter transparent proxy (TPROXY) target module."); +MODULE_ALIAS("ipt_TPROXY"); diff --git a/net/netfilter/xt_TRACE.c b/net/netfilter/xt_TRACE.c index 30dab79a3438..fbb04b86c46b 100644 --- a/net/netfilter/xt_TRACE.c +++ b/net/netfilter/xt_TRACE.c @@ -11,39 +11,29 @@ MODULE_ALIAS("ipt_TRACE"); MODULE_ALIAS("ip6t_TRACE"); static unsigned int -trace_tg(struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, unsigned int hooknum, - const struct xt_target *target, const void *targinfo) +trace_tg(struct sk_buff *skb, const struct xt_target_param *par) { skb->nf_trace = 1; return XT_CONTINUE; } -static struct xt_target trace_tg_reg[] __read_mostly = { - { - .name = "TRACE", - .family = AF_INET, - .target = trace_tg, - .table = "raw", - .me = THIS_MODULE, - }, - { - .name = "TRACE", - .family = AF_INET6, - .target = trace_tg, - .table = "raw", - .me = THIS_MODULE, - }, +static struct xt_target trace_tg_reg __read_mostly = { + .name = "TRACE", + .revision = 0, + .family = NFPROTO_UNSPEC, + .table = "raw", + .target = trace_tg, + .me = THIS_MODULE, }; static int __init trace_tg_init(void) { - return xt_register_targets(trace_tg_reg, ARRAY_SIZE(trace_tg_reg)); + return xt_register_target(&trace_tg_reg); } static void __exit trace_tg_exit(void) { - xt_unregister_targets(trace_tg_reg, ARRAY_SIZE(trace_tg_reg)); + xt_unregister_target(&trace_tg_reg); } module_init(trace_tg_init); diff --git a/net/netfilter/xt_comment.c b/net/netfilter/xt_comment.c index 89f47364e848..e82179832acd 100644 --- a/net/netfilter/xt_comment.c +++ b/net/netfilter/xt_comment.c @@ -16,40 +16,29 @@ MODULE_ALIAS("ipt_comment"); MODULE_ALIAS("ip6t_comment"); static bool -comment_mt(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protooff, - bool *hotdrop) +comment_mt(const struct sk_buff *skb, const struct xt_match_param *par) { /* We always match */ return true; } -static struct xt_match comment_mt_reg[] __read_mostly = { - { - .name = "comment", - .family = AF_INET, - .match = comment_mt, - .matchsize = sizeof(struct xt_comment_info), - .me = THIS_MODULE - }, - { - .name = "comment", - .family = AF_INET6, - .match = comment_mt, - .matchsize = sizeof(struct xt_comment_info), - .me = THIS_MODULE - }, +static struct xt_match comment_mt_reg __read_mostly = { + .name = "comment", + .revision = 0, + .family = NFPROTO_UNSPEC, + .match = comment_mt, + .matchsize = sizeof(struct xt_comment_info), + .me = THIS_MODULE, }; static int __init comment_mt_init(void) { - return xt_register_matches(comment_mt_reg, ARRAY_SIZE(comment_mt_reg)); + return xt_register_match(&comment_mt_reg); } static void __exit comment_mt_exit(void) { - xt_unregister_matches(comment_mt_reg, ARRAY_SIZE(comment_mt_reg)); + xt_unregister_match(&comment_mt_reg); } module_init(comment_mt_init); diff --git a/net/netfilter/xt_connbytes.c b/net/netfilter/xt_connbytes.c index 3e39c4fe1931..955e6598a7f0 100644 --- a/net/netfilter/xt_connbytes.c +++ b/net/netfilter/xt_connbytes.c @@ -17,12 +17,9 @@ MODULE_ALIAS("ipt_connbytes"); MODULE_ALIAS("ip6t_connbytes"); static bool -connbytes_mt(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, - bool *hotdrop) +connbytes_mt(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct xt_connbytes_info *sinfo = matchinfo; + const struct xt_connbytes_info *sinfo = par->matchinfo; const struct nf_conn *ct; enum ip_conntrack_info ctinfo; u_int64_t what = 0; /* initialize to make gcc happy */ @@ -95,12 +92,9 @@ connbytes_mt(const struct sk_buff *skb, const struct net_device *in, return what >= sinfo->count.from; } -static bool -connbytes_mt_check(const char *tablename, const void *ip, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +static bool connbytes_mt_check(const struct xt_mtchk_param *par) { - const struct xt_connbytes_info *sinfo = matchinfo; + const struct xt_connbytes_info *sinfo = par->matchinfo; if (sinfo->what != XT_CONNBYTES_PKTS && sinfo->what != XT_CONNBYTES_BYTES && @@ -112,51 +106,39 @@ connbytes_mt_check(const char *tablename, const void *ip, sinfo->direction != XT_CONNBYTES_DIR_BOTH) return false; - if (nf_ct_l3proto_try_module_get(match->family) < 0) { + if (nf_ct_l3proto_try_module_get(par->family) < 0) { printk(KERN_WARNING "can't load conntrack support for " - "proto=%u\n", match->family); + "proto=%u\n", par->family); return false; } return true; } -static void -connbytes_mt_destroy(const struct xt_match *match, void *matchinfo) +static void connbytes_mt_destroy(const struct xt_mtdtor_param *par) { - nf_ct_l3proto_module_put(match->family); + nf_ct_l3proto_module_put(par->family); } -static struct xt_match connbytes_mt_reg[] __read_mostly = { - { - .name = "connbytes", - .family = AF_INET, - .checkentry = connbytes_mt_check, - .match = connbytes_mt, - .destroy = connbytes_mt_destroy, - .matchsize = sizeof(struct xt_connbytes_info), - .me = THIS_MODULE - }, - { - .name = "connbytes", - .family = AF_INET6, - .checkentry = connbytes_mt_check, - .match = connbytes_mt, - .destroy = connbytes_mt_destroy, - .matchsize = sizeof(struct xt_connbytes_info), - .me = THIS_MODULE - }, +static struct xt_match connbytes_mt_reg __read_mostly = { + .name = "connbytes", + .revision = 0, + .family = NFPROTO_UNSPEC, + .checkentry = connbytes_mt_check, + .match = connbytes_mt, + .destroy = connbytes_mt_destroy, + .matchsize = sizeof(struct xt_connbytes_info), + .me = THIS_MODULE, }; static int __init connbytes_mt_init(void) { - return xt_register_matches(connbytes_mt_reg, - ARRAY_SIZE(connbytes_mt_reg)); + return xt_register_match(&connbytes_mt_reg); } static void __exit connbytes_mt_exit(void) { - xt_unregister_matches(connbytes_mt_reg, ARRAY_SIZE(connbytes_mt_reg)); + xt_unregister_match(&connbytes_mt_reg); } module_init(connbytes_mt_init); diff --git a/net/netfilter/xt_connlimit.c b/net/netfilter/xt_connlimit.c index 70907f6baac3..7f404cc64c83 100644 --- a/net/netfilter/xt_connlimit.c +++ b/net/netfilter/xt_connlimit.c @@ -82,9 +82,9 @@ static inline bool already_closed(const struct nf_conn *conn) static inline unsigned int same_source_net(const union nf_inet_addr *addr, const union nf_inet_addr *mask, - const union nf_inet_addr *u3, unsigned int family) + const union nf_inet_addr *u3, u_int8_t family) { - if (family == AF_INET) { + if (family == NFPROTO_IPV4) { return (addr->ip & mask->ip) == (u3->ip & mask->ip); } else { union nf_inet_addr lh, rh; @@ -114,7 +114,7 @@ static int count_them(struct xt_connlimit_data *data, int matches = 0; - if (match->family == AF_INET6) + if (match->family == NFPROTO_IPV6) hash = &data->iphash[connlimit_iphash6(addr, mask)]; else hash = &data->iphash[connlimit_iphash(addr->ip & mask->ip)]; @@ -123,7 +123,7 @@ static int count_them(struct xt_connlimit_data *data, /* check the saved connections */ list_for_each_entry_safe(conn, tmp, hash, list) { - found = __nf_conntrack_find(&conn->tuple); + found = __nf_conntrack_find(&init_net, &conn->tuple); found_ct = NULL; if (found != NULL) @@ -178,12 +178,9 @@ static int count_them(struct xt_connlimit_data *data, } static bool -connlimit_mt(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, - bool *hotdrop) +connlimit_mt(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct xt_connlimit_info *info = matchinfo; + const struct xt_connlimit_info *info = par->matchinfo; union nf_inet_addr addr; struct nf_conntrack_tuple tuple; const struct nf_conntrack_tuple *tuple_ptr = &tuple; @@ -195,10 +192,10 @@ connlimit_mt(const struct sk_buff *skb, const struct net_device *in, if (ct != NULL) tuple_ptr = &ct->tuplehash[0].tuple; else if (!nf_ct_get_tuplepr(skb, skb_network_offset(skb), - match->family, &tuple)) + par->family, &tuple)) goto hotdrop; - if (match->family == AF_INET6) { + if (par->family == NFPROTO_IPV6) { const struct ipv6hdr *iph = ipv6_hdr(skb); memcpy(&addr.ip6, &iph->saddr, sizeof(iph->saddr)); } else { @@ -208,40 +205,37 @@ connlimit_mt(const struct sk_buff *skb, const struct net_device *in, spin_lock_bh(&info->data->lock); connections = count_them(info->data, tuple_ptr, &addr, - &info->mask, match); + &info->mask, par->match); spin_unlock_bh(&info->data->lock); if (connections < 0) { /* kmalloc failed, drop it entirely */ - *hotdrop = true; + *par->hotdrop = true; return false; } return (connections > info->limit) ^ info->inverse; hotdrop: - *hotdrop = true; + *par->hotdrop = true; return false; } -static bool -connlimit_mt_check(const char *tablename, const void *ip, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +static bool connlimit_mt_check(const struct xt_mtchk_param *par) { - struct xt_connlimit_info *info = matchinfo; + struct xt_connlimit_info *info = par->matchinfo; unsigned int i; - if (nf_ct_l3proto_try_module_get(match->family) < 0) { + if (nf_ct_l3proto_try_module_get(par->family) < 0) { printk(KERN_WARNING "cannot load conntrack support for " - "address family %u\n", match->family); + "address family %u\n", par->family); return false; } /* init private data */ info->data = kmalloc(sizeof(struct xt_connlimit_data), GFP_KERNEL); if (info->data == NULL) { - nf_ct_l3proto_module_put(match->family); + nf_ct_l3proto_module_put(par->family); return false; } @@ -252,16 +246,15 @@ connlimit_mt_check(const char *tablename, const void *ip, return true; } -static void -connlimit_mt_destroy(const struct xt_match *match, void *matchinfo) +static void connlimit_mt_destroy(const struct xt_mtdtor_param *par) { - const struct xt_connlimit_info *info = matchinfo; + const struct xt_connlimit_info *info = par->matchinfo; struct xt_connlimit_conn *conn; struct xt_connlimit_conn *tmp; struct list_head *hash = info->data->iphash; unsigned int i; - nf_ct_l3proto_module_put(match->family); + nf_ct_l3proto_module_put(par->family); for (i = 0; i < ARRAY_SIZE(info->data->iphash); ++i) { list_for_each_entry_safe(conn, tmp, &hash[i], list) { @@ -273,41 +266,30 @@ connlimit_mt_destroy(const struct xt_match *match, void *matchinfo) kfree(info->data); } -static struct xt_match connlimit_mt_reg[] __read_mostly = { - { - .name = "connlimit", - .family = AF_INET, - .checkentry = connlimit_mt_check, - .match = connlimit_mt, - .matchsize = sizeof(struct xt_connlimit_info), - .destroy = connlimit_mt_destroy, - .me = THIS_MODULE, - }, - { - .name = "connlimit", - .family = AF_INET6, - .checkentry = connlimit_mt_check, - .match = connlimit_mt, - .matchsize = sizeof(struct xt_connlimit_info), - .destroy = connlimit_mt_destroy, - .me = THIS_MODULE, - }, +static struct xt_match connlimit_mt_reg __read_mostly = { + .name = "connlimit", + .revision = 0, + .family = NFPROTO_UNSPEC, + .checkentry = connlimit_mt_check, + .match = connlimit_mt, + .matchsize = sizeof(struct xt_connlimit_info), + .destroy = connlimit_mt_destroy, + .me = THIS_MODULE, }; static int __init connlimit_mt_init(void) { - return xt_register_matches(connlimit_mt_reg, - ARRAY_SIZE(connlimit_mt_reg)); + return xt_register_match(&connlimit_mt_reg); } static void __exit connlimit_mt_exit(void) { - xt_unregister_matches(connlimit_mt_reg, ARRAY_SIZE(connlimit_mt_reg)); + xt_unregister_match(&connlimit_mt_reg); } module_init(connlimit_mt_init); module_exit(connlimit_mt_exit); -MODULE_AUTHOR("Jan Engelhardt <jengelh@computergmbh.de>"); +MODULE_AUTHOR("Jan Engelhardt <jengelh@medozas.de>"); MODULE_DESCRIPTION("Xtables: Number of connections matching"); MODULE_LICENSE("GPL"); MODULE_ALIAS("ipt_connlimit"); diff --git a/net/netfilter/xt_connmark.c b/net/netfilter/xt_connmark.c index aaa1b96691f9..86cacab7a4a3 100644 --- a/net/netfilter/xt_connmark.c +++ b/net/netfilter/xt_connmark.c @@ -34,12 +34,9 @@ MODULE_ALIAS("ipt_connmark"); MODULE_ALIAS("ip6t_connmark"); static bool -connmark_mt(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, - bool *hotdrop) +connmark_mt(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct xt_connmark_mtinfo1 *info = matchinfo; + const struct xt_connmark_mtinfo1 *info = par->matchinfo; enum ip_conntrack_info ctinfo; const struct nf_conn *ct; @@ -51,12 +48,9 @@ connmark_mt(const struct sk_buff *skb, const struct net_device *in, } static bool -connmark_mt_v0(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, - bool *hotdrop) +connmark_mt_v0(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct xt_connmark_info *info = matchinfo; + const struct xt_connmark_info *info = par->matchinfo; const struct nf_conn *ct; enum ip_conntrack_info ctinfo; @@ -67,42 +61,35 @@ connmark_mt_v0(const struct sk_buff *skb, const struct net_device *in, return ((ct->mark & info->mask) == info->mark) ^ info->invert; } -static bool -connmark_mt_check_v0(const char *tablename, const void *ip, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +static bool connmark_mt_check_v0(const struct xt_mtchk_param *par) { - const struct xt_connmark_info *cm = matchinfo; + const struct xt_connmark_info *cm = par->matchinfo; if (cm->mark > 0xffffffff || cm->mask > 0xffffffff) { printk(KERN_WARNING "connmark: only support 32bit mark\n"); return false; } - if (nf_ct_l3proto_try_module_get(match->family) < 0) { + if (nf_ct_l3proto_try_module_get(par->family) < 0) { printk(KERN_WARNING "can't load conntrack support for " - "proto=%u\n", match->family); + "proto=%u\n", par->family); return false; } return true; } -static bool -connmark_mt_check(const char *tablename, const void *ip, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +static bool connmark_mt_check(const struct xt_mtchk_param *par) { - if (nf_ct_l3proto_try_module_get(match->family) < 0) { + if (nf_ct_l3proto_try_module_get(par->family) < 0) { printk(KERN_WARNING "cannot load conntrack support for " - "proto=%u\n", match->family); + "proto=%u\n", par->family); return false; } return true; } -static void -connmark_mt_destroy(const struct xt_match *match, void *matchinfo) +static void connmark_mt_destroy(const struct xt_mtdtor_param *par) { - nf_ct_l3proto_module_put(match->family); + nf_ct_l3proto_module_put(par->family); } #ifdef CONFIG_COMPAT @@ -140,7 +127,7 @@ static struct xt_match connmark_mt_reg[] __read_mostly = { { .name = "connmark", .revision = 0, - .family = AF_INET, + .family = NFPROTO_UNSPEC, .checkentry = connmark_mt_check_v0, .match = connmark_mt_v0, .destroy = connmark_mt_destroy, @@ -153,34 +140,9 @@ static struct xt_match connmark_mt_reg[] __read_mostly = { .me = THIS_MODULE }, { - .name = "connmark", - .revision = 0, - .family = AF_INET6, - .checkentry = connmark_mt_check_v0, - .match = connmark_mt_v0, - .destroy = connmark_mt_destroy, - .matchsize = sizeof(struct xt_connmark_info), -#ifdef CONFIG_COMPAT - .compatsize = sizeof(struct compat_xt_connmark_info), - .compat_from_user = connmark_mt_compat_from_user_v0, - .compat_to_user = connmark_mt_compat_to_user_v0, -#endif - .me = THIS_MODULE - }, - { - .name = "connmark", - .revision = 1, - .family = AF_INET, - .checkentry = connmark_mt_check, - .match = connmark_mt, - .matchsize = sizeof(struct xt_connmark_mtinfo1), - .destroy = connmark_mt_destroy, - .me = THIS_MODULE, - }, - { .name = "connmark", .revision = 1, - .family = AF_INET6, + .family = NFPROTO_UNSPEC, .checkentry = connmark_mt_check, .match = connmark_mt, .matchsize = sizeof(struct xt_connmark_mtinfo1), diff --git a/net/netfilter/xt_conntrack.c b/net/netfilter/xt_conntrack.c index d61412f58ef7..0b7139f3dd78 100644 --- a/net/netfilter/xt_conntrack.c +++ b/net/netfilter/xt_conntrack.c @@ -25,12 +25,9 @@ MODULE_ALIAS("ipt_conntrack"); MODULE_ALIAS("ip6t_conntrack"); static bool -conntrack_mt_v0(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, - bool *hotdrop) +conntrack_mt_v0(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct xt_conntrack_info *sinfo = matchinfo; + const struct xt_conntrack_info *sinfo = par->matchinfo; const struct nf_conn *ct; enum ip_conntrack_info ctinfo; unsigned int statebit; @@ -121,9 +118,9 @@ conntrack_addrcmp(const union nf_inet_addr *kaddr, const union nf_inet_addr *uaddr, const union nf_inet_addr *umask, unsigned int l3proto) { - if (l3proto == AF_INET) + if (l3proto == NFPROTO_IPV4) return ((kaddr->ip ^ uaddr->ip) & umask->ip) == 0; - else if (l3proto == AF_INET6) + else if (l3proto == NFPROTO_IPV6) return ipv6_masked_addr_cmp(&kaddr->in6, &umask->in6, &uaddr->in6) == 0; else @@ -133,7 +130,7 @@ conntrack_addrcmp(const union nf_inet_addr *kaddr, static inline bool conntrack_mt_origsrc(const struct nf_conn *ct, const struct xt_conntrack_mtinfo1 *info, - unsigned int family) + u_int8_t family) { return conntrack_addrcmp(&ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.u3, &info->origsrc_addr, &info->origsrc_mask, family); @@ -142,7 +139,7 @@ conntrack_mt_origsrc(const struct nf_conn *ct, static inline bool conntrack_mt_origdst(const struct nf_conn *ct, const struct xt_conntrack_mtinfo1 *info, - unsigned int family) + u_int8_t family) { return conntrack_addrcmp(&ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.u3, &info->origdst_addr, &info->origdst_mask, family); @@ -151,7 +148,7 @@ conntrack_mt_origdst(const struct nf_conn *ct, static inline bool conntrack_mt_replsrc(const struct nf_conn *ct, const struct xt_conntrack_mtinfo1 *info, - unsigned int family) + u_int8_t family) { return conntrack_addrcmp(&ct->tuplehash[IP_CT_DIR_REPLY].tuple.src.u3, &info->replsrc_addr, &info->replsrc_mask, family); @@ -160,7 +157,7 @@ conntrack_mt_replsrc(const struct nf_conn *ct, static inline bool conntrack_mt_repldst(const struct nf_conn *ct, const struct xt_conntrack_mtinfo1 *info, - unsigned int family) + u_int8_t family) { return conntrack_addrcmp(&ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.u3, &info->repldst_addr, &info->repldst_mask, family); @@ -205,12 +202,9 @@ ct_proto_port_check(const struct xt_conntrack_mtinfo1 *info, } static bool -conntrack_mt(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, - bool *hotdrop) +conntrack_mt(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct xt_conntrack_mtinfo1 *info = matchinfo; + const struct xt_conntrack_mtinfo1 *info = par->matchinfo; enum ip_conntrack_info ctinfo; const struct nf_conn *ct; unsigned int statebit; @@ -244,22 +238,22 @@ conntrack_mt(const struct sk_buff *skb, const struct net_device *in, return false; if (info->match_flags & XT_CONNTRACK_ORIGSRC) - if (conntrack_mt_origsrc(ct, info, match->family) ^ + if (conntrack_mt_origsrc(ct, info, par->family) ^ !(info->invert_flags & XT_CONNTRACK_ORIGSRC)) return false; if (info->match_flags & XT_CONNTRACK_ORIGDST) - if (conntrack_mt_origdst(ct, info, match->family) ^ + if (conntrack_mt_origdst(ct, info, par->family) ^ !(info->invert_flags & XT_CONNTRACK_ORIGDST)) return false; if (info->match_flags & XT_CONNTRACK_REPLSRC) - if (conntrack_mt_replsrc(ct, info, match->family) ^ + if (conntrack_mt_replsrc(ct, info, par->family) ^ !(info->invert_flags & XT_CONNTRACK_REPLSRC)) return false; if (info->match_flags & XT_CONNTRACK_REPLDST) - if (conntrack_mt_repldst(ct, info, match->family) ^ + if (conntrack_mt_repldst(ct, info, par->family) ^ !(info->invert_flags & XT_CONNTRACK_REPLDST)) return false; @@ -284,23 +278,19 @@ conntrack_mt(const struct sk_buff *skb, const struct net_device *in, return true; } -static bool -conntrack_mt_check(const char *tablename, const void *ip, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +static bool conntrack_mt_check(const struct xt_mtchk_param *par) { - if (nf_ct_l3proto_try_module_get(match->family) < 0) { + if (nf_ct_l3proto_try_module_get(par->family) < 0) { printk(KERN_WARNING "can't load conntrack support for " - "proto=%u\n", match->family); + "proto=%u\n", par->family); return false; } return true; } -static void -conntrack_mt_destroy(const struct xt_match *match, void *matchinfo) +static void conntrack_mt_destroy(const struct xt_mtdtor_param *par) { - nf_ct_l3proto_module_put(match->family); + nf_ct_l3proto_module_put(par->family); } #ifdef CONFIG_COMPAT @@ -356,7 +346,7 @@ static struct xt_match conntrack_mt_reg[] __read_mostly = { { .name = "conntrack", .revision = 0, - .family = AF_INET, + .family = NFPROTO_IPV4, .match = conntrack_mt_v0, .checkentry = conntrack_mt_check, .destroy = conntrack_mt_destroy, @@ -371,17 +361,7 @@ static struct xt_match conntrack_mt_reg[] __read_mostly = { { .name = "conntrack", .revision = 1, - .family = AF_INET, - .matchsize = sizeof(struct xt_conntrack_mtinfo1), - .match = conntrack_mt, - .checkentry = conntrack_mt_check, - .destroy = conntrack_mt_destroy, - .me = THIS_MODULE, - }, - { - .name = "conntrack", - .revision = 1, - .family = AF_INET6, + .family = NFPROTO_UNSPEC, .matchsize = sizeof(struct xt_conntrack_mtinfo1), .match = conntrack_mt, .checkentry = conntrack_mt_check, diff --git a/net/netfilter/xt_dccp.c b/net/netfilter/xt_dccp.c index 8b6522186d9f..e5d3e8673287 100644 --- a/net/netfilter/xt_dccp.c +++ b/net/netfilter/xt_dccp.c @@ -93,20 +93,18 @@ match_option(u_int8_t option, const struct sk_buff *skb, unsigned int protoff, } static bool -dccp_mt(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, bool *hotdrop) +dccp_mt(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct xt_dccp_info *info = matchinfo; + const struct xt_dccp_info *info = par->matchinfo; const struct dccp_hdr *dh; struct dccp_hdr _dh; - if (offset) + if (par->fragoff != 0) return false; - dh = skb_header_pointer(skb, protoff, sizeof(_dh), &_dh); + dh = skb_header_pointer(skb, par->thoff, sizeof(_dh), &_dh); if (dh == NULL) { - *hotdrop = true; + *par->hotdrop = true; return false; } @@ -118,17 +116,14 @@ dccp_mt(const struct sk_buff *skb, const struct net_device *in, XT_DCCP_DEST_PORTS, info->flags, info->invflags) && DCCHECK(match_types(dh, info->typemask), XT_DCCP_TYPE, info->flags, info->invflags) - && DCCHECK(match_option(info->option, skb, protoff, dh, - hotdrop), + && DCCHECK(match_option(info->option, skb, par->thoff, dh, + par->hotdrop), XT_DCCP_OPTION, info->flags, info->invflags); } -static bool -dccp_mt_check(const char *tablename, const void *inf, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +static bool dccp_mt_check(const struct xt_mtchk_param *par) { - const struct xt_dccp_info *info = matchinfo; + const struct xt_dccp_info *info = par->matchinfo; return !(info->flags & ~XT_DCCP_VALID_FLAGS) && !(info->invflags & ~XT_DCCP_VALID_FLAGS) @@ -138,7 +133,7 @@ dccp_mt_check(const char *tablename, const void *inf, static struct xt_match dccp_mt_reg[] __read_mostly = { { .name = "dccp", - .family = AF_INET, + .family = NFPROTO_IPV4, .checkentry = dccp_mt_check, .match = dccp_mt, .matchsize = sizeof(struct xt_dccp_info), @@ -147,7 +142,7 @@ static struct xt_match dccp_mt_reg[] __read_mostly = { }, { .name = "dccp", - .family = AF_INET6, + .family = NFPROTO_IPV6, .checkentry = dccp_mt_check, .match = dccp_mt, .matchsize = sizeof(struct xt_dccp_info), diff --git a/net/netfilter/xt_dscp.c b/net/netfilter/xt_dscp.c index 26f4aab9c429..c3f8085460d7 100644 --- a/net/netfilter/xt_dscp.c +++ b/net/netfilter/xt_dscp.c @@ -26,61 +26,48 @@ MODULE_ALIAS("ipt_tos"); MODULE_ALIAS("ip6t_tos"); static bool -dscp_mt(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, bool *hotdrop) +dscp_mt(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct xt_dscp_info *info = matchinfo; + const struct xt_dscp_info *info = par->matchinfo; u_int8_t dscp = ipv4_get_dsfield(ip_hdr(skb)) >> XT_DSCP_SHIFT; return (dscp == info->dscp) ^ !!info->invert; } static bool -dscp_mt6(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, - bool *hotdrop) +dscp_mt6(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct xt_dscp_info *info = matchinfo; + const struct xt_dscp_info *info = par->matchinfo; u_int8_t dscp = ipv6_get_dsfield(ipv6_hdr(skb)) >> XT_DSCP_SHIFT; return (dscp == info->dscp) ^ !!info->invert; } -static bool -dscp_mt_check(const char *tablename, const void *info, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +static bool dscp_mt_check(const struct xt_mtchk_param *par) { - const u_int8_t dscp = ((struct xt_dscp_info *)matchinfo)->dscp; + const struct xt_dscp_info *info = par->matchinfo; - if (dscp > XT_DSCP_MAX) { - printk(KERN_ERR "xt_dscp: dscp %x out of range\n", dscp); + if (info->dscp > XT_DSCP_MAX) { + printk(KERN_ERR "xt_dscp: dscp %x out of range\n", info->dscp); return false; } return true; } -static bool tos_mt_v0(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, - const struct xt_match *match, const void *matchinfo, - int offset, unsigned int protoff, bool *hotdrop) +static bool +tos_mt_v0(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct ipt_tos_info *info = matchinfo; + const struct ipt_tos_info *info = par->matchinfo; return (ip_hdr(skb)->tos == info->tos) ^ info->invert; } -static bool tos_mt(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, - bool *hotdrop) +static bool tos_mt(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct xt_tos_match_info *info = matchinfo; + const struct xt_tos_match_info *info = par->matchinfo; - if (match->family == AF_INET) + if (par->match->family == NFPROTO_IPV4) return ((ip_hdr(skb)->tos & info->tos_mask) == info->tos_value) ^ !!info->invert; else @@ -91,7 +78,7 @@ static bool tos_mt(const struct sk_buff *skb, const struct net_device *in, static struct xt_match dscp_mt_reg[] __read_mostly = { { .name = "dscp", - .family = AF_INET, + .family = NFPROTO_IPV4, .checkentry = dscp_mt_check, .match = dscp_mt, .matchsize = sizeof(struct xt_dscp_info), @@ -99,7 +86,7 @@ static struct xt_match dscp_mt_reg[] __read_mostly = { }, { .name = "dscp", - .family = AF_INET6, + .family = NFPROTO_IPV6, .checkentry = dscp_mt_check, .match = dscp_mt6, .matchsize = sizeof(struct xt_dscp_info), @@ -108,7 +95,7 @@ static struct xt_match dscp_mt_reg[] __read_mostly = { { .name = "tos", .revision = 0, - .family = AF_INET, + .family = NFPROTO_IPV4, .match = tos_mt_v0, .matchsize = sizeof(struct ipt_tos_info), .me = THIS_MODULE, @@ -116,7 +103,7 @@ static struct xt_match dscp_mt_reg[] __read_mostly = { { .name = "tos", .revision = 1, - .family = AF_INET, + .family = NFPROTO_IPV4, .match = tos_mt, .matchsize = sizeof(struct xt_tos_match_info), .me = THIS_MODULE, @@ -124,7 +111,7 @@ static struct xt_match dscp_mt_reg[] __read_mostly = { { .name = "tos", .revision = 1, - .family = AF_INET6, + .family = NFPROTO_IPV6, .match = tos_mt, .matchsize = sizeof(struct xt_tos_match_info), .me = THIS_MODULE, diff --git a/net/netfilter/xt_esp.c b/net/netfilter/xt_esp.c index a133eb9b23e1..609439967c2c 100644 --- a/net/netfilter/xt_esp.c +++ b/net/netfilter/xt_esp.c @@ -42,26 +42,23 @@ spi_match(u_int32_t min, u_int32_t max, u_int32_t spi, bool invert) return r; } -static bool -esp_mt(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, bool *hotdrop) +static bool esp_mt(const struct sk_buff *skb, const struct xt_match_param *par) { const struct ip_esp_hdr *eh; struct ip_esp_hdr _esp; - const struct xt_esp *espinfo = matchinfo; + const struct xt_esp *espinfo = par->matchinfo; /* Must not be a fragment. */ - if (offset) + if (par->fragoff != 0) return false; - eh = skb_header_pointer(skb, protoff, sizeof(_esp), &_esp); + eh = skb_header_pointer(skb, par->thoff, sizeof(_esp), &_esp); if (eh == NULL) { /* We've been asked to examine this packet, and we * can't. Hence, no choice but to drop. */ duprintf("Dropping evil ESP tinygram.\n"); - *hotdrop = true; + *par->hotdrop = true; return false; } @@ -69,13 +66,9 @@ esp_mt(const struct sk_buff *skb, const struct net_device *in, !!(espinfo->invflags & XT_ESP_INV_SPI)); } -/* Called when user tries to insert an entry of this type. */ -static bool -esp_mt_check(const char *tablename, const void *ip_void, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +static bool esp_mt_check(const struct xt_mtchk_param *par) { - const struct xt_esp *espinfo = matchinfo; + const struct xt_esp *espinfo = par->matchinfo; if (espinfo->invflags & ~XT_ESP_INV_MASK) { duprintf("xt_esp: unknown flags %X\n", espinfo->invflags); @@ -88,7 +81,7 @@ esp_mt_check(const char *tablename, const void *ip_void, static struct xt_match esp_mt_reg[] __read_mostly = { { .name = "esp", - .family = AF_INET, + .family = NFPROTO_IPV4, .checkentry = esp_mt_check, .match = esp_mt, .matchsize = sizeof(struct xt_esp), @@ -97,7 +90,7 @@ static struct xt_match esp_mt_reg[] __read_mostly = { }, { .name = "esp", - .family = AF_INET6, + .family = NFPROTO_IPV6, .checkentry = esp_mt_check, .match = esp_mt, .matchsize = sizeof(struct xt_esp), diff --git a/net/netfilter/xt_hashlimit.c b/net/netfilter/xt_hashlimit.c index d9418a267812..6fc4292d46e6 100644 --- a/net/netfilter/xt_hashlimit.c +++ b/net/netfilter/xt_hashlimit.c @@ -80,7 +80,7 @@ struct dsthash_ent { struct xt_hashlimit_htable { struct hlist_node node; /* global list of all htables */ atomic_t use; - int family; + u_int8_t family; struct hashlimit_cfg1 cfg; /* config */ @@ -185,7 +185,7 @@ dsthash_free(struct xt_hashlimit_htable *ht, struct dsthash_ent *ent) } static void htable_gc(unsigned long htlong); -static int htable_create_v0(struct xt_hashlimit_info *minfo, int family) +static int htable_create_v0(struct xt_hashlimit_info *minfo, u_int8_t family) { struct xt_hashlimit_htable *hinfo; unsigned int size; @@ -218,7 +218,7 @@ static int htable_create_v0(struct xt_hashlimit_info *minfo, int family) hinfo->cfg.gc_interval = minfo->cfg.gc_interval; hinfo->cfg.expire = minfo->cfg.expire; - if (family == AF_INET) + if (family == NFPROTO_IPV4) hinfo->cfg.srcmask = hinfo->cfg.dstmask = 32; else hinfo->cfg.srcmask = hinfo->cfg.dstmask = 128; @@ -237,11 +237,10 @@ static int htable_create_v0(struct xt_hashlimit_info *minfo, int family) hinfo->family = family; hinfo->rnd_initialized = 0; spin_lock_init(&hinfo->lock); - hinfo->pde = - proc_create_data(minfo->name, 0, - family == AF_INET ? hashlimit_procdir4 : - hashlimit_procdir6, - &dl_file_ops, hinfo); + hinfo->pde = proc_create_data(minfo->name, 0, + (family == NFPROTO_IPV4) ? + hashlimit_procdir4 : hashlimit_procdir6, + &dl_file_ops, hinfo); if (!hinfo->pde) { vfree(hinfo); return -1; @@ -258,8 +257,7 @@ static int htable_create_v0(struct xt_hashlimit_info *minfo, int family) return 0; } -static int htable_create(struct xt_hashlimit_mtinfo1 *minfo, - unsigned int family) +static int htable_create(struct xt_hashlimit_mtinfo1 *minfo, u_int8_t family) { struct xt_hashlimit_htable *hinfo; unsigned int size; @@ -301,11 +299,10 @@ static int htable_create(struct xt_hashlimit_mtinfo1 *minfo, hinfo->rnd_initialized = 0; spin_lock_init(&hinfo->lock); - hinfo->pde = - proc_create_data(minfo->name, 0, - family == AF_INET ? hashlimit_procdir4 : - hashlimit_procdir6, - &dl_file_ops, hinfo); + hinfo->pde = proc_create_data(minfo->name, 0, + (family == NFPROTO_IPV4) ? + hashlimit_procdir4 : hashlimit_procdir6, + &dl_file_ops, hinfo); if (hinfo->pde == NULL) { vfree(hinfo); return -1; @@ -371,14 +368,14 @@ static void htable_destroy(struct xt_hashlimit_htable *hinfo) /* remove proc entry */ remove_proc_entry(hinfo->pde->name, - hinfo->family == AF_INET ? hashlimit_procdir4 : + hinfo->family == NFPROTO_IPV4 ? hashlimit_procdir4 : hashlimit_procdir6); htable_selective_cleanup(hinfo, select_all); vfree(hinfo); } static struct xt_hashlimit_htable *htable_find_get(const char *name, - int family) + u_int8_t family) { struct xt_hashlimit_htable *hinfo; struct hlist_node *pos; @@ -502,7 +499,7 @@ hashlimit_init_dst(const struct xt_hashlimit_htable *hinfo, memset(dst, 0, sizeof(*dst)); switch (hinfo->family) { - case AF_INET: + case NFPROTO_IPV4: if (hinfo->cfg.mode & XT_HASHLIMIT_HASH_DIP) dst->ip.dst = maskl(ip_hdr(skb)->daddr, hinfo->cfg.dstmask); @@ -516,7 +513,7 @@ hashlimit_init_dst(const struct xt_hashlimit_htable *hinfo, nexthdr = ip_hdr(skb)->protocol; break; #if defined(CONFIG_IP6_NF_IPTABLES) || defined(CONFIG_IP6_NF_IPTABLES_MODULE) - case AF_INET6: + case NFPROTO_IPV6: if (hinfo->cfg.mode & XT_HASHLIMIT_HASH_DIP) { memcpy(&dst->ip6.dst, &ipv6_hdr(skb)->daddr, sizeof(dst->ip6.dst)); @@ -566,19 +563,16 @@ hashlimit_init_dst(const struct xt_hashlimit_htable *hinfo, } static bool -hashlimit_mt_v0(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, - bool *hotdrop) +hashlimit_mt_v0(const struct sk_buff *skb, const struct xt_match_param *par) { const struct xt_hashlimit_info *r = - ((const struct xt_hashlimit_info *)matchinfo)->u.master; + ((const struct xt_hashlimit_info *)par->matchinfo)->u.master; struct xt_hashlimit_htable *hinfo = r->hinfo; unsigned long now = jiffies; struct dsthash_ent *dh; struct dsthash_dst dst; - if (hashlimit_init_dst(hinfo, &dst, skb, protoff) < 0) + if (hashlimit_init_dst(hinfo, &dst, skb, par->thoff) < 0) goto hotdrop; spin_lock_bh(&hinfo->lock); @@ -616,23 +610,20 @@ hashlimit_mt_v0(const struct sk_buff *skb, const struct net_device *in, return false; hotdrop: - *hotdrop = true; + *par->hotdrop = true; return false; } static bool -hashlimit_mt(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, - bool *hotdrop) +hashlimit_mt(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct xt_hashlimit_mtinfo1 *info = matchinfo; + const struct xt_hashlimit_mtinfo1 *info = par->matchinfo; struct xt_hashlimit_htable *hinfo = info->hinfo; unsigned long now = jiffies; struct dsthash_ent *dh; struct dsthash_dst dst; - if (hashlimit_init_dst(hinfo, &dst, skb, protoff) < 0) + if (hashlimit_init_dst(hinfo, &dst, skb, par->thoff) < 0) goto hotdrop; spin_lock_bh(&hinfo->lock); @@ -669,16 +660,13 @@ hashlimit_mt(const struct sk_buff *skb, const struct net_device *in, return info->cfg.mode & XT_HASHLIMIT_INVERT; hotdrop: - *hotdrop = true; + *par->hotdrop = true; return false; } -static bool -hashlimit_mt_check_v0(const char *tablename, const void *inf, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +static bool hashlimit_mt_check_v0(const struct xt_mtchk_param *par) { - struct xt_hashlimit_info *r = matchinfo; + struct xt_hashlimit_info *r = par->matchinfo; /* Check for overflow. */ if (r->cfg.burst == 0 || @@ -707,8 +695,8 @@ hashlimit_mt_check_v0(const char *tablename, const void *inf, * the list of htable's in htable_create(), since then we would * create duplicate proc files. -HW */ mutex_lock(&hlimit_mutex); - r->hinfo = htable_find_get(r->name, match->family); - if (!r->hinfo && htable_create_v0(r, match->family) != 0) { + r->hinfo = htable_find_get(r->name, par->match->family); + if (!r->hinfo && htable_create_v0(r, par->match->family) != 0) { mutex_unlock(&hlimit_mutex); return false; } @@ -719,12 +707,9 @@ hashlimit_mt_check_v0(const char *tablename, const void *inf, return true; } -static bool -hashlimit_mt_check(const char *tablename, const void *inf, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +static bool hashlimit_mt_check(const struct xt_mtchk_param *par) { - struct xt_hashlimit_mtinfo1 *info = matchinfo; + struct xt_hashlimit_mtinfo1 *info = par->matchinfo; /* Check for overflow. */ if (info->cfg.burst == 0 || @@ -738,7 +723,7 @@ hashlimit_mt_check(const char *tablename, const void *inf, return false; if (info->name[sizeof(info->name)-1] != '\0') return false; - if (match->family == AF_INET) { + if (par->match->family == NFPROTO_IPV4) { if (info->cfg.srcmask > 32 || info->cfg.dstmask > 32) return false; } else { @@ -753,8 +738,8 @@ hashlimit_mt_check(const char *tablename, const void *inf, * the list of htable's in htable_create(), since then we would * create duplicate proc files. -HW */ mutex_lock(&hlimit_mutex); - info->hinfo = htable_find_get(info->name, match->family); - if (!info->hinfo && htable_create(info, match->family) != 0) { + info->hinfo = htable_find_get(info->name, par->match->family); + if (!info->hinfo && htable_create(info, par->match->family) != 0) { mutex_unlock(&hlimit_mutex); return false; } @@ -763,17 +748,16 @@ hashlimit_mt_check(const char *tablename, const void *inf, } static void -hashlimit_mt_destroy_v0(const struct xt_match *match, void *matchinfo) +hashlimit_mt_destroy_v0(const struct xt_mtdtor_param *par) { - const struct xt_hashlimit_info *r = matchinfo; + const struct xt_hashlimit_info *r = par->matchinfo; htable_put(r->hinfo); } -static void -hashlimit_mt_destroy(const struct xt_match *match, void *matchinfo) +static void hashlimit_mt_destroy(const struct xt_mtdtor_param *par) { - const struct xt_hashlimit_mtinfo1 *info = matchinfo; + const struct xt_hashlimit_mtinfo1 *info = par->matchinfo; htable_put(info->hinfo); } @@ -806,7 +790,7 @@ static struct xt_match hashlimit_mt_reg[] __read_mostly = { { .name = "hashlimit", .revision = 0, - .family = AF_INET, + .family = NFPROTO_IPV4, .match = hashlimit_mt_v0, .matchsize = sizeof(struct xt_hashlimit_info), #ifdef CONFIG_COMPAT @@ -821,7 +805,7 @@ static struct xt_match hashlimit_mt_reg[] __read_mostly = { { .name = "hashlimit", .revision = 1, - .family = AF_INET, + .family = NFPROTO_IPV4, .match = hashlimit_mt, .matchsize = sizeof(struct xt_hashlimit_mtinfo1), .checkentry = hashlimit_mt_check, @@ -831,7 +815,7 @@ static struct xt_match hashlimit_mt_reg[] __read_mostly = { #if defined(CONFIG_IP6_NF_IPTABLES) || defined(CONFIG_IP6_NF_IPTABLES_MODULE) { .name = "hashlimit", - .family = AF_INET6, + .family = NFPROTO_IPV6, .match = hashlimit_mt_v0, .matchsize = sizeof(struct xt_hashlimit_info), #ifdef CONFIG_COMPAT @@ -846,7 +830,7 @@ static struct xt_match hashlimit_mt_reg[] __read_mostly = { { .name = "hashlimit", .revision = 1, - .family = AF_INET6, + .family = NFPROTO_IPV6, .match = hashlimit_mt, .matchsize = sizeof(struct xt_hashlimit_mtinfo1), .checkentry = hashlimit_mt_check, @@ -901,14 +885,14 @@ static void dl_seq_stop(struct seq_file *s, void *v) spin_unlock_bh(&htable->lock); } -static int dl_seq_real_show(struct dsthash_ent *ent, int family, +static int dl_seq_real_show(struct dsthash_ent *ent, u_int8_t family, struct seq_file *s) { /* recalculate to show accurate numbers */ rateinfo_recalc(ent, jiffies); switch (family) { - case AF_INET: + case NFPROTO_IPV4: return seq_printf(s, "%ld %u.%u.%u.%u:%u->" "%u.%u.%u.%u:%u %u %u %u\n", (long)(ent->expires - jiffies)/HZ, @@ -919,7 +903,7 @@ static int dl_seq_real_show(struct dsthash_ent *ent, int family, ent->rateinfo.credit, ent->rateinfo.credit_cap, ent->rateinfo.cost); #if defined(CONFIG_IP6_NF_IPTABLES) || defined(CONFIG_IP6_NF_IPTABLES_MODULE) - case AF_INET6: + case NFPROTO_IPV6: return seq_printf(s, "%ld " NIP6_FMT ":%u->" NIP6_FMT ":%u %u %u %u\n", (long)(ent->expires - jiffies)/HZ, diff --git a/net/netfilter/xt_helper.c b/net/netfilter/xt_helper.c index dada2905d66e..64fc7f277221 100644 --- a/net/netfilter/xt_helper.c +++ b/net/netfilter/xt_helper.c @@ -24,12 +24,9 @@ MODULE_ALIAS("ip6t_helper"); static bool -helper_mt(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, - bool *hotdrop) +helper_mt(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct xt_helper_info *info = matchinfo; + const struct xt_helper_info *info = par->matchinfo; const struct nf_conn *ct; const struct nf_conn_help *master_help; const struct nf_conntrack_helper *helper; @@ -57,56 +54,43 @@ helper_mt(const struct sk_buff *skb, const struct net_device *in, return ret; } -static bool -helper_mt_check(const char *tablename, const void *inf, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +static bool helper_mt_check(const struct xt_mtchk_param *par) { - struct xt_helper_info *info = matchinfo; + struct xt_helper_info *info = par->matchinfo; - if (nf_ct_l3proto_try_module_get(match->family) < 0) { + if (nf_ct_l3proto_try_module_get(par->family) < 0) { printk(KERN_WARNING "can't load conntrack support for " - "proto=%u\n", match->family); + "proto=%u\n", par->family); return false; } info->name[29] = '\0'; return true; } -static void helper_mt_destroy(const struct xt_match *match, void *matchinfo) +static void helper_mt_destroy(const struct xt_mtdtor_param *par) { - nf_ct_l3proto_module_put(match->family); + nf_ct_l3proto_module_put(par->family); } -static struct xt_match helper_mt_reg[] __read_mostly = { - { - .name = "helper", - .family = AF_INET, - .checkentry = helper_mt_check, - .match = helper_mt, - .destroy = helper_mt_destroy, - .matchsize = sizeof(struct xt_helper_info), - .me = THIS_MODULE, - }, - { - .name = "helper", - .family = AF_INET6, - .checkentry = helper_mt_check, - .match = helper_mt, - .destroy = helper_mt_destroy, - .matchsize = sizeof(struct xt_helper_info), - .me = THIS_MODULE, - }, +static struct xt_match helper_mt_reg __read_mostly = { + .name = "helper", + .revision = 0, + .family = NFPROTO_UNSPEC, + .checkentry = helper_mt_check, + .match = helper_mt, + .destroy = helper_mt_destroy, + .matchsize = sizeof(struct xt_helper_info), + .me = THIS_MODULE, }; static int __init helper_mt_init(void) { - return xt_register_matches(helper_mt_reg, ARRAY_SIZE(helper_mt_reg)); + return xt_register_match(&helper_mt_reg); } static void __exit helper_mt_exit(void) { - xt_unregister_matches(helper_mt_reg, ARRAY_SIZE(helper_mt_reg)); + xt_unregister_match(&helper_mt_reg); } module_init(helper_mt_init); diff --git a/net/netfilter/xt_iprange.c b/net/netfilter/xt_iprange.c index c63e9333c755..6f62c36948d9 100644 --- a/net/netfilter/xt_iprange.c +++ b/net/netfilter/xt_iprange.c @@ -17,12 +17,9 @@ #include <linux/netfilter_ipv4/ipt_iprange.h> static bool -iprange_mt_v0(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, - bool *hotdrop) +iprange_mt_v0(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct ipt_iprange_info *info = matchinfo; + const struct ipt_iprange_info *info = par->matchinfo; const struct iphdr *iph = ip_hdr(skb); if (info->flags & IPRANGE_SRC) { @@ -55,12 +52,9 @@ iprange_mt_v0(const struct sk_buff *skb, const struct net_device *in, } static bool -iprange_mt4(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, - bool *hotdrop) +iprange_mt4(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct xt_iprange_mtinfo *info = matchinfo; + const struct xt_iprange_mtinfo *info = par->matchinfo; const struct iphdr *iph = ip_hdr(skb); bool m; @@ -111,12 +105,9 @@ iprange_ipv6_sub(const struct in6_addr *a, const struct in6_addr *b) } static bool -iprange_mt6(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, - bool *hotdrop) +iprange_mt6(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct xt_iprange_mtinfo *info = matchinfo; + const struct xt_iprange_mtinfo *info = par->matchinfo; const struct ipv6hdr *iph = ipv6_hdr(skb); bool m; @@ -141,7 +132,7 @@ static struct xt_match iprange_mt_reg[] __read_mostly = { { .name = "iprange", .revision = 0, - .family = AF_INET, + .family = NFPROTO_IPV4, .match = iprange_mt_v0, .matchsize = sizeof(struct ipt_iprange_info), .me = THIS_MODULE, @@ -149,7 +140,7 @@ static struct xt_match iprange_mt_reg[] __read_mostly = { { .name = "iprange", .revision = 1, - .family = AF_INET, + .family = NFPROTO_IPV4, .match = iprange_mt4, .matchsize = sizeof(struct xt_iprange_mtinfo), .me = THIS_MODULE, @@ -157,7 +148,7 @@ static struct xt_match iprange_mt_reg[] __read_mostly = { { .name = "iprange", .revision = 1, - .family = AF_INET6, + .family = NFPROTO_IPV6, .match = iprange_mt6, .matchsize = sizeof(struct xt_iprange_mtinfo), .me = THIS_MODULE, diff --git a/net/netfilter/xt_length.c b/net/netfilter/xt_length.c index b8640f972950..c4871ca6c86d 100644 --- a/net/netfilter/xt_length.c +++ b/net/netfilter/xt_length.c @@ -21,24 +21,18 @@ MODULE_ALIAS("ipt_length"); MODULE_ALIAS("ip6t_length"); static bool -length_mt(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, - bool *hotdrop) +length_mt(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct xt_length_info *info = matchinfo; + const struct xt_length_info *info = par->matchinfo; u_int16_t pktlen = ntohs(ip_hdr(skb)->tot_len); return (pktlen >= info->min && pktlen <= info->max) ^ info->invert; } static bool -length_mt6(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, - bool *hotdrop) +length_mt6(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct xt_length_info *info = matchinfo; + const struct xt_length_info *info = par->matchinfo; const u_int16_t pktlen = ntohs(ipv6_hdr(skb)->payload_len) + sizeof(struct ipv6hdr); @@ -48,14 +42,14 @@ length_mt6(const struct sk_buff *skb, const struct net_device *in, static struct xt_match length_mt_reg[] __read_mostly = { { .name = "length", - .family = AF_INET, + .family = NFPROTO_IPV4, .match = length_mt, .matchsize = sizeof(struct xt_length_info), .me = THIS_MODULE, }, { .name = "length", - .family = AF_INET6, + .family = NFPROTO_IPV6, .match = length_mt6, .matchsize = sizeof(struct xt_length_info), .me = THIS_MODULE, diff --git a/net/netfilter/xt_limit.c b/net/netfilter/xt_limit.c index aad9ab8d2046..c908d69a5595 100644 --- a/net/netfilter/xt_limit.c +++ b/net/netfilter/xt_limit.c @@ -58,13 +58,10 @@ static DEFINE_SPINLOCK(limit_lock); #define CREDITS_PER_JIFFY POW2_BELOW32(MAX_CPJ) static bool -limit_mt(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, - bool *hotdrop) +limit_mt(const struct sk_buff *skb, const struct xt_match_param *par) { struct xt_rateinfo *r = - ((const struct xt_rateinfo *)matchinfo)->master; + ((const struct xt_rateinfo *)par->matchinfo)->master; unsigned long now = jiffies; spin_lock_bh(&limit_lock); @@ -95,12 +92,9 @@ user2credits(u_int32_t user) return (user * HZ * CREDITS_PER_JIFFY) / XT_LIMIT_SCALE; } -static bool -limit_mt_check(const char *tablename, const void *inf, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +static bool limit_mt_check(const struct xt_mtchk_param *par) { - struct xt_rateinfo *r = matchinfo; + struct xt_rateinfo *r = par->matchinfo; /* Check for overflow. */ if (r->burst == 0 @@ -167,43 +161,29 @@ static int limit_mt_compat_to_user(void __user *dst, void *src) } #endif /* CONFIG_COMPAT */ -static struct xt_match limit_mt_reg[] __read_mostly = { - { - .name = "limit", - .family = AF_INET, - .checkentry = limit_mt_check, - .match = limit_mt, - .matchsize = sizeof(struct xt_rateinfo), -#ifdef CONFIG_COMPAT - .compatsize = sizeof(struct compat_xt_rateinfo), - .compat_from_user = limit_mt_compat_from_user, - .compat_to_user = limit_mt_compat_to_user, -#endif - .me = THIS_MODULE, - }, - { - .name = "limit", - .family = AF_INET6, - .checkentry = limit_mt_check, - .match = limit_mt, - .matchsize = sizeof(struct xt_rateinfo), +static struct xt_match limit_mt_reg __read_mostly = { + .name = "limit", + .revision = 0, + .family = NFPROTO_UNSPEC, + .match = limit_mt, + .checkentry = limit_mt_check, + .matchsize = sizeof(struct xt_rateinfo), #ifdef CONFIG_COMPAT - .compatsize = sizeof(struct compat_xt_rateinfo), - .compat_from_user = limit_mt_compat_from_user, - .compat_to_user = limit_mt_compat_to_user, + .compatsize = sizeof(struct compat_xt_rateinfo), + .compat_from_user = limit_mt_compat_from_user, + .compat_to_user = limit_mt_compat_to_user, #endif - .me = THIS_MODULE, - }, + .me = THIS_MODULE, }; static int __init limit_mt_init(void) { - return xt_register_matches(limit_mt_reg, ARRAY_SIZE(limit_mt_reg)); + return xt_register_match(&limit_mt_reg); } static void __exit limit_mt_exit(void) { - xt_unregister_matches(limit_mt_reg, ARRAY_SIZE(limit_mt_reg)); + xt_unregister_match(&limit_mt_reg); } module_init(limit_mt_init); diff --git a/net/netfilter/xt_mac.c b/net/netfilter/xt_mac.c index b3e96a0ec176..c2007116ce5b 100644 --- a/net/netfilter/xt_mac.c +++ b/net/netfilter/xt_mac.c @@ -24,12 +24,9 @@ MODULE_DESCRIPTION("Xtables: MAC address match"); MODULE_ALIAS("ipt_mac"); MODULE_ALIAS("ip6t_mac"); -static bool -mac_mt(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, bool *hotdrop) +static bool mac_mt(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct xt_mac_info *info = matchinfo; + const struct xt_mac_info *info = par->matchinfo; /* Is mac pointer valid? */ return skb_mac_header(skb) >= skb->head && @@ -39,37 +36,25 @@ mac_mt(const struct sk_buff *skb, const struct net_device *in, ^ info->invert); } -static struct xt_match mac_mt_reg[] __read_mostly = { - { - .name = "mac", - .family = AF_INET, - .match = mac_mt, - .matchsize = sizeof(struct xt_mac_info), - .hooks = (1 << NF_INET_PRE_ROUTING) | - (1 << NF_INET_LOCAL_IN) | - (1 << NF_INET_FORWARD), - .me = THIS_MODULE, - }, - { - .name = "mac", - .family = AF_INET6, - .match = mac_mt, - .matchsize = sizeof(struct xt_mac_info), - .hooks = (1 << NF_INET_PRE_ROUTING) | - (1 << NF_INET_LOCAL_IN) | - (1 << NF_INET_FORWARD), - .me = THIS_MODULE, - }, +static struct xt_match mac_mt_reg __read_mostly = { + .name = "mac", + .revision = 0, + .family = NFPROTO_UNSPEC, + .match = mac_mt, + .matchsize = sizeof(struct xt_mac_info), + .hooks = (1 << NF_INET_PRE_ROUTING) | (1 << NF_INET_LOCAL_IN) | + (1 << NF_INET_FORWARD), + .me = THIS_MODULE, }; static int __init mac_mt_init(void) { - return xt_register_matches(mac_mt_reg, ARRAY_SIZE(mac_mt_reg)); + return xt_register_match(&mac_mt_reg); } static void __exit mac_mt_exit(void) { - xt_unregister_matches(mac_mt_reg, ARRAY_SIZE(mac_mt_reg)); + xt_unregister_match(&mac_mt_reg); } module_init(mac_mt_init); diff --git a/net/netfilter/xt_mark.c b/net/netfilter/xt_mark.c index 9f78f6120fbd..10b9e34bbc5b 100644 --- a/net/netfilter/xt_mark.c +++ b/net/netfilter/xt_mark.c @@ -23,32 +23,24 @@ MODULE_ALIAS("ipt_mark"); MODULE_ALIAS("ip6t_mark"); static bool -mark_mt_v0(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, - bool *hotdrop) +mark_mt_v0(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct xt_mark_info *info = matchinfo; + const struct xt_mark_info *info = par->matchinfo; return ((skb->mark & info->mask) == info->mark) ^ info->invert; } static bool -mark_mt(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, bool *hotdrop) +mark_mt(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct xt_mark_mtinfo1 *info = matchinfo; + const struct xt_mark_mtinfo1 *info = par->matchinfo; return ((skb->mark & info->mask) == info->mark) ^ info->invert; } -static bool -mark_mt_check_v0(const char *tablename, const void *entry, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +static bool mark_mt_check_v0(const struct xt_mtchk_param *par) { - const struct xt_mark_info *minfo = matchinfo; + const struct xt_mark_info *minfo = par->matchinfo; if (minfo->mark > 0xffffffff || minfo->mask > 0xffffffff) { printk(KERN_WARNING "mark: only supports 32bit mark\n"); @@ -92,7 +84,7 @@ static struct xt_match mark_mt_reg[] __read_mostly = { { .name = "mark", .revision = 0, - .family = AF_INET, + .family = NFPROTO_UNSPEC, .checkentry = mark_mt_check_v0, .match = mark_mt_v0, .matchsize = sizeof(struct xt_mark_info), @@ -104,31 +96,9 @@ static struct xt_match mark_mt_reg[] __read_mostly = { .me = THIS_MODULE, }, { - .name = "mark", - .revision = 0, - .family = AF_INET6, - .checkentry = mark_mt_check_v0, - .match = mark_mt_v0, - .matchsize = sizeof(struct xt_mark_info), -#ifdef CONFIG_COMPAT - .compatsize = sizeof(struct compat_xt_mark_info), - .compat_from_user = mark_mt_compat_from_user_v0, - .compat_to_user = mark_mt_compat_to_user_v0, -#endif - .me = THIS_MODULE, - }, - { - .name = "mark", - .revision = 1, - .family = AF_INET, - .match = mark_mt, - .matchsize = sizeof(struct xt_mark_mtinfo1), - .me = THIS_MODULE, - }, - { .name = "mark", .revision = 1, - .family = AF_INET6, + .family = NFPROTO_UNSPEC, .match = mark_mt, .matchsize = sizeof(struct xt_mark_mtinfo1), .me = THIS_MODULE, diff --git a/net/netfilter/xt_multiport.c b/net/netfilter/xt_multiport.c index fd88c489b70e..d06bb2dd3900 100644 --- a/net/netfilter/xt_multiport.c +++ b/net/netfilter/xt_multiport.c @@ -95,25 +95,22 @@ ports_match_v1(const struct xt_multiport_v1 *minfo, } static bool -multiport_mt_v0(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, - bool *hotdrop) +multiport_mt_v0(const struct sk_buff *skb, const struct xt_match_param *par) { const __be16 *pptr; __be16 _ports[2]; - const struct xt_multiport *multiinfo = matchinfo; + const struct xt_multiport *multiinfo = par->matchinfo; - if (offset) + if (par->fragoff != 0) return false; - pptr = skb_header_pointer(skb, protoff, sizeof(_ports), _ports); + pptr = skb_header_pointer(skb, par->thoff, sizeof(_ports), _ports); if (pptr == NULL) { /* We've been asked to examine this packet, and we * can't. Hence, no choice but to drop. */ duprintf("xt_multiport: Dropping evil offset=0 tinygram.\n"); - *hotdrop = true; + *par->hotdrop = true; return false; } @@ -122,25 +119,22 @@ multiport_mt_v0(const struct sk_buff *skb, const struct net_device *in, } static bool -multiport_mt(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, - bool *hotdrop) +multiport_mt(const struct sk_buff *skb, const struct xt_match_param *par) { const __be16 *pptr; __be16 _ports[2]; - const struct xt_multiport_v1 *multiinfo = matchinfo; + const struct xt_multiport_v1 *multiinfo = par->matchinfo; - if (offset) + if (par->fragoff != 0) return false; - pptr = skb_header_pointer(skb, protoff, sizeof(_ports), _ports); + pptr = skb_header_pointer(skb, par->thoff, sizeof(_ports), _ports); if (pptr == NULL) { /* We've been asked to examine this packet, and we * can't. Hence, no choice but to drop. */ duprintf("xt_multiport: Dropping evil offset=0 tinygram.\n"); - *hotdrop = true; + *par->hotdrop = true; return false; } @@ -164,50 +158,37 @@ check(u_int16_t proto, && count <= XT_MULTI_PORTS; } -/* Called when user tries to insert an entry of this type. */ -static bool -multiport_mt_check_v0(const char *tablename, const void *info, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +static bool multiport_mt_check_v0(const struct xt_mtchk_param *par) { - const struct ipt_ip *ip = info; - const struct xt_multiport *multiinfo = matchinfo; + const struct ipt_ip *ip = par->entryinfo; + const struct xt_multiport *multiinfo = par->matchinfo; return check(ip->proto, ip->invflags, multiinfo->flags, multiinfo->count); } -static bool -multiport_mt_check(const char *tablename, const void *info, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +static bool multiport_mt_check(const struct xt_mtchk_param *par) { - const struct ipt_ip *ip = info; - const struct xt_multiport_v1 *multiinfo = matchinfo; + const struct ipt_ip *ip = par->entryinfo; + const struct xt_multiport_v1 *multiinfo = par->matchinfo; return check(ip->proto, ip->invflags, multiinfo->flags, multiinfo->count); } -static bool -multiport_mt6_check_v0(const char *tablename, const void *info, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +static bool multiport_mt6_check_v0(const struct xt_mtchk_param *par) { - const struct ip6t_ip6 *ip = info; - const struct xt_multiport *multiinfo = matchinfo; + const struct ip6t_ip6 *ip = par->entryinfo; + const struct xt_multiport *multiinfo = par->matchinfo; return check(ip->proto, ip->invflags, multiinfo->flags, multiinfo->count); } -static bool -multiport_mt6_check(const char *tablename, const void *info, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +static bool multiport_mt6_check(const struct xt_mtchk_param *par) { - const struct ip6t_ip6 *ip = info; - const struct xt_multiport_v1 *multiinfo = matchinfo; + const struct ip6t_ip6 *ip = par->entryinfo; + const struct xt_multiport_v1 *multiinfo = par->matchinfo; return check(ip->proto, ip->invflags, multiinfo->flags, multiinfo->count); @@ -216,7 +197,7 @@ multiport_mt6_check(const char *tablename, const void *info, static struct xt_match multiport_mt_reg[] __read_mostly = { { .name = "multiport", - .family = AF_INET, + .family = NFPROTO_IPV4, .revision = 0, .checkentry = multiport_mt_check_v0, .match = multiport_mt_v0, @@ -225,7 +206,7 @@ static struct xt_match multiport_mt_reg[] __read_mostly = { }, { .name = "multiport", - .family = AF_INET, + .family = NFPROTO_IPV4, .revision = 1, .checkentry = multiport_mt_check, .match = multiport_mt, @@ -234,7 +215,7 @@ static struct xt_match multiport_mt_reg[] __read_mostly = { }, { .name = "multiport", - .family = AF_INET6, + .family = NFPROTO_IPV6, .revision = 0, .checkentry = multiport_mt6_check_v0, .match = multiport_mt_v0, @@ -243,7 +224,7 @@ static struct xt_match multiport_mt_reg[] __read_mostly = { }, { .name = "multiport", - .family = AF_INET6, + .family = NFPROTO_IPV6, .revision = 1, .checkentry = multiport_mt6_check, .match = multiport_mt, diff --git a/net/netfilter/xt_owner.c b/net/netfilter/xt_owner.c index 9059c16144c3..f19ebd9b78f5 100644 --- a/net/netfilter/xt_owner.c +++ b/net/netfilter/xt_owner.c @@ -21,12 +21,9 @@ #include <linux/netfilter_ipv6/ip6t_owner.h> static bool -owner_mt_v0(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, - bool *hotdrop) +owner_mt_v0(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct ipt_owner_info *info = matchinfo; + const struct ipt_owner_info *info = par->matchinfo; const struct file *filp; if (skb->sk == NULL || skb->sk->sk_socket == NULL) @@ -50,12 +47,9 @@ owner_mt_v0(const struct sk_buff *skb, const struct net_device *in, } static bool -owner_mt6_v0(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, - bool *hotdrop) +owner_mt6_v0(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct ip6t_owner_info *info = matchinfo; + const struct ip6t_owner_info *info = par->matchinfo; const struct file *filp; if (skb->sk == NULL || skb->sk->sk_socket == NULL) @@ -79,12 +73,9 @@ owner_mt6_v0(const struct sk_buff *skb, const struct net_device *in, } static bool -owner_mt(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, - bool *hotdrop) +owner_mt(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct xt_owner_match_info *info = matchinfo; + const struct xt_owner_match_info *info = par->matchinfo; const struct file *filp; if (skb->sk == NULL || skb->sk->sk_socket == NULL) @@ -116,12 +107,9 @@ owner_mt(const struct sk_buff *skb, const struct net_device *in, return true; } -static bool -owner_mt_check_v0(const char *tablename, const void *ip, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +static bool owner_mt_check_v0(const struct xt_mtchk_param *par) { - const struct ipt_owner_info *info = matchinfo; + const struct ipt_owner_info *info = par->matchinfo; if (info->match & (IPT_OWNER_PID | IPT_OWNER_SID | IPT_OWNER_COMM)) { printk(KERN_WARNING KBUILD_MODNAME @@ -133,12 +121,9 @@ owner_mt_check_v0(const char *tablename, const void *ip, return true; } -static bool -owner_mt6_check_v0(const char *tablename, const void *ip, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +static bool owner_mt6_check_v0(const struct xt_mtchk_param *par) { - const struct ip6t_owner_info *info = matchinfo; + const struct ip6t_owner_info *info = par->matchinfo; if (info->match & (IP6T_OWNER_PID | IP6T_OWNER_SID)) { printk(KERN_WARNING KBUILD_MODNAME @@ -153,7 +138,7 @@ static struct xt_match owner_mt_reg[] __read_mostly = { { .name = "owner", .revision = 0, - .family = AF_INET, + .family = NFPROTO_IPV4, .match = owner_mt_v0, .matchsize = sizeof(struct ipt_owner_info), .checkentry = owner_mt_check_v0, @@ -164,7 +149,7 @@ static struct xt_match owner_mt_reg[] __read_mostly = { { .name = "owner", .revision = 0, - .family = AF_INET6, + .family = NFPROTO_IPV6, .match = owner_mt6_v0, .matchsize = sizeof(struct ip6t_owner_info), .checkentry = owner_mt6_check_v0, @@ -175,17 +160,7 @@ static struct xt_match owner_mt_reg[] __read_mostly = { { .name = "owner", .revision = 1, - .family = AF_INET, - .match = owner_mt, - .matchsize = sizeof(struct xt_owner_match_info), - .hooks = (1 << NF_INET_LOCAL_OUT) | - (1 << NF_INET_POST_ROUTING), - .me = THIS_MODULE, - }, - { - .name = "owner", - .revision = 1, - .family = AF_INET6, + .family = NFPROTO_UNSPEC, .match = owner_mt, .matchsize = sizeof(struct xt_owner_match_info), .hooks = (1 << NF_INET_LOCAL_OUT) | diff --git a/net/netfilter/xt_physdev.c b/net/netfilter/xt_physdev.c index 4ec1094bda92..1bcdfc12cf59 100644 --- a/net/netfilter/xt_physdev.c +++ b/net/netfilter/xt_physdev.c @@ -21,14 +21,11 @@ MODULE_ALIAS("ipt_physdev"); MODULE_ALIAS("ip6t_physdev"); static bool -physdev_mt(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, - bool *hotdrop) +physdev_mt(const struct sk_buff *skb, const struct xt_match_param *par) { int i; static const char nulldevname[IFNAMSIZ]; - const struct xt_physdev_info *info = matchinfo; + const struct xt_physdev_info *info = par->matchinfo; bool ret; const char *indev, *outdev; const struct nf_bridge_info *nf_bridge; @@ -94,12 +91,9 @@ match_outdev: return ret ^ !(info->invert & XT_PHYSDEV_OP_OUT); } -static bool -physdev_mt_check(const char *tablename, const void *ip, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +static bool physdev_mt_check(const struct xt_mtchk_param *par) { - const struct xt_physdev_info *info = matchinfo; + const struct xt_physdev_info *info = par->matchinfo; if (!(info->bitmask & XT_PHYSDEV_OP_MASK) || info->bitmask & ~XT_PHYSDEV_OP_MASK) @@ -107,44 +101,35 @@ physdev_mt_check(const char *tablename, const void *ip, if (info->bitmask & XT_PHYSDEV_OP_OUT && (!(info->bitmask & XT_PHYSDEV_OP_BRIDGED) || info->invert & XT_PHYSDEV_OP_BRIDGED) && - hook_mask & ((1 << NF_INET_LOCAL_OUT) | (1 << NF_INET_FORWARD) | - (1 << NF_INET_POST_ROUTING))) { + par->hook_mask & ((1 << NF_INET_LOCAL_OUT) | + (1 << NF_INET_FORWARD) | (1 << NF_INET_POST_ROUTING))) { printk(KERN_WARNING "physdev match: using --physdev-out in the " "OUTPUT, FORWARD and POSTROUTING chains for non-bridged " "traffic is not supported anymore.\n"); - if (hook_mask & (1 << NF_INET_LOCAL_OUT)) + if (par->hook_mask & (1 << NF_INET_LOCAL_OUT)) return false; } return true; } -static struct xt_match physdev_mt_reg[] __read_mostly = { - { - .name = "physdev", - .family = AF_INET, - .checkentry = physdev_mt_check, - .match = physdev_mt, - .matchsize = sizeof(struct xt_physdev_info), - .me = THIS_MODULE, - }, - { - .name = "physdev", - .family = AF_INET6, - .checkentry = physdev_mt_check, - .match = physdev_mt, - .matchsize = sizeof(struct xt_physdev_info), - .me = THIS_MODULE, - }, +static struct xt_match physdev_mt_reg __read_mostly = { + .name = "physdev", + .revision = 0, + .family = NFPROTO_UNSPEC, + .checkentry = physdev_mt_check, + .match = physdev_mt, + .matchsize = sizeof(struct xt_physdev_info), + .me = THIS_MODULE, }; static int __init physdev_mt_init(void) { - return xt_register_matches(physdev_mt_reg, ARRAY_SIZE(physdev_mt_reg)); + return xt_register_match(&physdev_mt_reg); } static void __exit physdev_mt_exit(void) { - xt_unregister_matches(physdev_mt_reg, ARRAY_SIZE(physdev_mt_reg)); + xt_unregister_match(&physdev_mt_reg); } module_init(physdev_mt_init); diff --git a/net/netfilter/xt_pkttype.c b/net/netfilter/xt_pkttype.c index 7936f7e23254..69da1d3a1d85 100644 --- a/net/netfilter/xt_pkttype.c +++ b/net/netfilter/xt_pkttype.c @@ -23,20 +23,17 @@ MODULE_ALIAS("ipt_pkttype"); MODULE_ALIAS("ip6t_pkttype"); static bool -pkttype_mt(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, - bool *hotdrop) +pkttype_mt(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct xt_pkttype_info *info = matchinfo; + const struct xt_pkttype_info *info = par->matchinfo; u_int8_t type; if (skb->pkt_type != PACKET_LOOPBACK) type = skb->pkt_type; - else if (match->family == AF_INET && + else if (par->family == NFPROTO_IPV4 && ipv4_is_multicast(ip_hdr(skb)->daddr)) type = PACKET_MULTICAST; - else if (match->family == AF_INET6 && + else if (par->family == NFPROTO_IPV6 && ipv6_hdr(skb)->daddr.s6_addr[0] == 0xFF) type = PACKET_MULTICAST; else @@ -45,31 +42,23 @@ pkttype_mt(const struct sk_buff *skb, const struct net_device *in, return (type == info->pkttype) ^ info->invert; } -static struct xt_match pkttype_mt_reg[] __read_mostly = { - { - .name = "pkttype", - .family = AF_INET, - .match = pkttype_mt, - .matchsize = sizeof(struct xt_pkttype_info), - .me = THIS_MODULE, - }, - { - .name = "pkttype", - .family = AF_INET6, - .match = pkttype_mt, - .matchsize = sizeof(struct xt_pkttype_info), - .me = THIS_MODULE, - }, +static struct xt_match pkttype_mt_reg __read_mostly = { + .name = "pkttype", + .revision = 0, + .family = NFPROTO_UNSPEC, + .match = pkttype_mt, + .matchsize = sizeof(struct xt_pkttype_info), + .me = THIS_MODULE, }; static int __init pkttype_mt_init(void) { - return xt_register_matches(pkttype_mt_reg, ARRAY_SIZE(pkttype_mt_reg)); + return xt_register_match(&pkttype_mt_reg); } static void __exit pkttype_mt_exit(void) { - xt_unregister_matches(pkttype_mt_reg, ARRAY_SIZE(pkttype_mt_reg)); + xt_unregister_match(&pkttype_mt_reg); } module_init(pkttype_mt_init); diff --git a/net/netfilter/xt_policy.c b/net/netfilter/xt_policy.c index d351582b2a3d..328bd20ddd25 100644 --- a/net/netfilter/xt_policy.c +++ b/net/netfilter/xt_policy.c @@ -26,9 +26,9 @@ xt_addr_cmp(const union nf_inet_addr *a1, const union nf_inet_addr *m, const union nf_inet_addr *a2, unsigned short family) { switch (family) { - case AF_INET: + case NFPROTO_IPV4: return ((a1->ip ^ a2->ip) & m->ip) == 0; - case AF_INET6: + case NFPROTO_IPV6: return ipv6_masked_addr_cmp(&a1->in6, &m->in6, &a2->in6) == 0; } return false; @@ -110,18 +110,15 @@ match_policy_out(const struct sk_buff *skb, const struct xt_policy_info *info, } static bool -policy_mt(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, - bool *hotdrop) +policy_mt(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct xt_policy_info *info = matchinfo; + const struct xt_policy_info *info = par->matchinfo; int ret; if (info->flags & XT_POLICY_MATCH_IN) - ret = match_policy_in(skb, info, match->family); + ret = match_policy_in(skb, info, par->match->family); else - ret = match_policy_out(skb, info, match->family); + ret = match_policy_out(skb, info, par->match->family); if (ret < 0) ret = info->flags & XT_POLICY_MATCH_NONE ? true : false; @@ -131,26 +128,23 @@ policy_mt(const struct sk_buff *skb, const struct net_device *in, return ret; } -static bool -policy_mt_check(const char *tablename, const void *ip_void, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +static bool policy_mt_check(const struct xt_mtchk_param *par) { - const struct xt_policy_info *info = matchinfo; + const struct xt_policy_info *info = par->matchinfo; if (!(info->flags & (XT_POLICY_MATCH_IN|XT_POLICY_MATCH_OUT))) { printk(KERN_ERR "xt_policy: neither incoming nor " "outgoing policy selected\n"); return false; } - if (hook_mask & (1 << NF_INET_PRE_ROUTING | 1 << NF_INET_LOCAL_IN) - && info->flags & XT_POLICY_MATCH_OUT) { + if (par->hook_mask & ((1 << NF_INET_PRE_ROUTING) | + (1 << NF_INET_LOCAL_IN)) && info->flags & XT_POLICY_MATCH_OUT) { printk(KERN_ERR "xt_policy: output policy not valid in " "PRE_ROUTING and INPUT\n"); return false; } - if (hook_mask & (1 << NF_INET_POST_ROUTING | 1 << NF_INET_LOCAL_OUT) - && info->flags & XT_POLICY_MATCH_IN) { + if (par->hook_mask & ((1 << NF_INET_POST_ROUTING) | + (1 << NF_INET_LOCAL_OUT)) && info->flags & XT_POLICY_MATCH_IN) { printk(KERN_ERR "xt_policy: input policy not valid in " "POST_ROUTING and OUTPUT\n"); return false; @@ -165,7 +159,7 @@ policy_mt_check(const char *tablename, const void *ip_void, static struct xt_match policy_mt_reg[] __read_mostly = { { .name = "policy", - .family = AF_INET, + .family = NFPROTO_IPV4, .checkentry = policy_mt_check, .match = policy_mt, .matchsize = sizeof(struct xt_policy_info), @@ -173,7 +167,7 @@ static struct xt_match policy_mt_reg[] __read_mostly = { }, { .name = "policy", - .family = AF_INET6, + .family = NFPROTO_IPV6, .checkentry = policy_mt_check, .match = policy_mt, .matchsize = sizeof(struct xt_policy_info), diff --git a/net/netfilter/xt_quota.c b/net/netfilter/xt_quota.c index 3b021d0c522a..c84fce5e0f3e 100644 --- a/net/netfilter/xt_quota.c +++ b/net/netfilter/xt_quota.c @@ -18,13 +18,10 @@ MODULE_ALIAS("ip6t_quota"); static DEFINE_SPINLOCK(quota_lock); static bool -quota_mt(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, - bool *hotdrop) +quota_mt(const struct sk_buff *skb, const struct xt_match_param *par) { struct xt_quota_info *q = - ((const struct xt_quota_info *)matchinfo)->master; + ((const struct xt_quota_info *)par->matchinfo)->master; bool ret = q->flags & XT_QUOTA_INVERT; spin_lock_bh("a_lock); @@ -40,12 +37,9 @@ quota_mt(const struct sk_buff *skb, const struct net_device *in, return ret; } -static bool -quota_mt_check(const char *tablename, const void *entry, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +static bool quota_mt_check(const struct xt_mtchk_param *par) { - struct xt_quota_info *q = matchinfo; + struct xt_quota_info *q = par->matchinfo; if (q->flags & ~XT_QUOTA_MASK) return false; @@ -54,33 +48,24 @@ quota_mt_check(const char *tablename, const void *entry, return true; } -static struct xt_match quota_mt_reg[] __read_mostly = { - { - .name = "quota", - .family = AF_INET, - .checkentry = quota_mt_check, - .match = quota_mt, - .matchsize = sizeof(struct xt_quota_info), - .me = THIS_MODULE - }, - { - .name = "quota", - .family = AF_INET6, - .checkentry = quota_mt_check, - .match = quota_mt, - .matchsize = sizeof(struct xt_quota_info), - .me = THIS_MODULE - }, +static struct xt_match quota_mt_reg __read_mostly = { + .name = "quota", + .revision = 0, + .family = NFPROTO_UNSPEC, + .match = quota_mt, + .checkentry = quota_mt_check, + .matchsize = sizeof(struct xt_quota_info), + .me = THIS_MODULE, }; static int __init quota_mt_init(void) { - return xt_register_matches(quota_mt_reg, ARRAY_SIZE(quota_mt_reg)); + return xt_register_match("a_mt_reg); } static void __exit quota_mt_exit(void) { - xt_unregister_matches(quota_mt_reg, ARRAY_SIZE(quota_mt_reg)); + xt_unregister_match("a_mt_reg); } module_init(quota_mt_init); diff --git a/net/netfilter/xt_rateest.c b/net/netfilter/xt_rateest.c index ebd84f1b4f62..220a1d588ee0 100644 --- a/net/netfilter/xt_rateest.c +++ b/net/netfilter/xt_rateest.c @@ -14,16 +14,10 @@ #include <net/netfilter/xt_rateest.h> -static bool xt_rateest_mt(const struct sk_buff *skb, - const struct net_device *in, - const struct net_device *out, - const struct xt_match *match, - const void *matchinfo, - int offset, - unsigned int protoff, - bool *hotdrop) +static bool +xt_rateest_mt(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct xt_rateest_match_info *info = matchinfo; + const struct xt_rateest_match_info *info = par->matchinfo; struct gnet_stats_rate_est *r; u_int32_t bps1, bps2, pps1, pps2; bool ret = true; @@ -80,13 +74,9 @@ static bool xt_rateest_mt(const struct sk_buff *skb, return ret; } -static bool xt_rateest_mt_checkentry(const char *tablename, - const void *ip, - const struct xt_match *match, - void *matchinfo, - unsigned int hook_mask) +static bool xt_rateest_mt_checkentry(const struct xt_mtchk_param *par) { - struct xt_rateest_match_info *info = matchinfo; + struct xt_rateest_match_info *info = par->matchinfo; struct xt_rateest *est1, *est2; if (hweight32(info->flags & (XT_RATEEST_MATCH_ABS | @@ -127,46 +117,34 @@ err1: return false; } -static void xt_rateest_mt_destroy(const struct xt_match *match, - void *matchinfo) +static void xt_rateest_mt_destroy(const struct xt_mtdtor_param *par) { - struct xt_rateest_match_info *info = matchinfo; + struct xt_rateest_match_info *info = par->matchinfo; xt_rateest_put(info->est1); if (info->est2) xt_rateest_put(info->est2); } -static struct xt_match xt_rateest_match[] __read_mostly = { - { - .family = AF_INET, - .name = "rateest", - .match = xt_rateest_mt, - .checkentry = xt_rateest_mt_checkentry, - .destroy = xt_rateest_mt_destroy, - .matchsize = sizeof(struct xt_rateest_match_info), - .me = THIS_MODULE, - }, - { - .family = AF_INET6, - .name = "rateest", - .match = xt_rateest_mt, - .checkentry = xt_rateest_mt_checkentry, - .destroy = xt_rateest_mt_destroy, - .matchsize = sizeof(struct xt_rateest_match_info), - .me = THIS_MODULE, - }, +static struct xt_match xt_rateest_mt_reg __read_mostly = { + .name = "rateest", + .revision = 0, + .family = NFPROTO_UNSPEC, + .match = xt_rateest_mt, + .checkentry = xt_rateest_mt_checkentry, + .destroy = xt_rateest_mt_destroy, + .matchsize = sizeof(struct xt_rateest_match_info), + .me = THIS_MODULE, }; static int __init xt_rateest_mt_init(void) { - return xt_register_matches(xt_rateest_match, - ARRAY_SIZE(xt_rateest_match)); + return xt_register_match(&xt_rateest_mt_reg); } static void __exit xt_rateest_mt_fini(void) { - xt_unregister_matches(xt_rateest_match, ARRAY_SIZE(xt_rateest_match)); + xt_unregister_match(&xt_rateest_mt_reg); } MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>"); diff --git a/net/netfilter/xt_realm.c b/net/netfilter/xt_realm.c index 7df1627c536f..67419287bc7e 100644 --- a/net/netfilter/xt_realm.c +++ b/net/netfilter/xt_realm.c @@ -22,12 +22,9 @@ MODULE_DESCRIPTION("Xtables: Routing realm match"); MODULE_ALIAS("ipt_realm"); static bool -realm_mt(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, - bool *hotdrop) +realm_mt(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct xt_realm_info *info = matchinfo; + const struct xt_realm_info *info = par->matchinfo; const struct dst_entry *dst = skb->dst; return (info->id == (dst->tclassid & info->mask)) ^ info->invert; @@ -39,7 +36,7 @@ static struct xt_match realm_mt_reg __read_mostly = { .matchsize = sizeof(struct xt_realm_info), .hooks = (1 << NF_INET_POST_ROUTING) | (1 << NF_INET_FORWARD) | (1 << NF_INET_LOCAL_OUT) | (1 << NF_INET_LOCAL_IN), - .family = AF_INET, + .family = NFPROTO_UNSPEC, .me = THIS_MODULE }; diff --git a/net/ipv4/netfilter/ipt_recent.c b/net/netfilter/xt_recent.c index 3974d7cae5c0..4ebd4ca9a991 100644 --- a/net/ipv4/netfilter/ipt_recent.c +++ b/net/netfilter/xt_recent.c @@ -1,5 +1,6 @@ /* * Copyright (c) 2006 Patrick McHardy <kaber@trash.net> + * Copyright © CC Computer Consultants GmbH, 2007 - 2008 * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as @@ -13,6 +14,8 @@ */ #include <linux/init.h> #include <linux/ip.h> +#include <linux/ipv6.h> +#include <linux/module.h> #include <linux/moduleparam.h> #include <linux/proc_fs.h> #include <linux/seq_file.h> @@ -27,11 +30,14 @@ #include <net/net_namespace.h> #include <linux/netfilter/x_tables.h> -#include <linux/netfilter_ipv4/ipt_recent.h> +#include <linux/netfilter/xt_recent.h> MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>"); +MODULE_AUTHOR("Jan Engelhardt <jengelh@computergmbh.de>"); MODULE_DESCRIPTION("Xtables: \"recently-seen\" host matching for IPv4"); MODULE_LICENSE("GPL"); +MODULE_ALIAS("ipt_recent"); +MODULE_ALIAS("ip6t_recent"); static unsigned int ip_list_tot = 100; static unsigned int ip_pkt_list_tot = 20; @@ -48,14 +54,15 @@ module_param(ip_list_gid, uint, 0400); MODULE_PARM_DESC(ip_list_tot, "number of IPs to remember per list"); MODULE_PARM_DESC(ip_pkt_list_tot, "number of packets per IP to remember (max. 255)"); MODULE_PARM_DESC(ip_list_hash_size, "size of hash table used to look up IPs"); -MODULE_PARM_DESC(ip_list_perms, "permissions on /proc/net/ipt_recent/* files"); -MODULE_PARM_DESC(ip_list_uid,"owner of /proc/net/ipt_recent/* files"); -MODULE_PARM_DESC(ip_list_gid,"owning group of /proc/net/ipt_recent/* files"); +MODULE_PARM_DESC(ip_list_perms, "permissions on /proc/net/xt_recent/* files"); +MODULE_PARM_DESC(ip_list_uid,"owner of /proc/net/xt_recent/* files"); +MODULE_PARM_DESC(ip_list_gid,"owning group of /proc/net/xt_recent/* files"); struct recent_entry { struct list_head list; struct list_head lru_list; - __be32 addr; + union nf_inet_addr addr; + u_int16_t family; u_int8_t ttl; u_int8_t index; u_int16_t nstamps; @@ -64,9 +71,9 @@ struct recent_entry { struct recent_table { struct list_head list; - char name[IPT_RECENT_NAME_LEN]; + char name[XT_RECENT_NAME_LEN]; #ifdef CONFIG_PROC_FS - struct proc_dir_entry *proc; + struct proc_dir_entry *proc_old, *proc; #endif unsigned int refcnt; unsigned int entries; @@ -79,31 +86,53 @@ static DEFINE_SPINLOCK(recent_lock); static DEFINE_MUTEX(recent_mutex); #ifdef CONFIG_PROC_FS -static struct proc_dir_entry *proc_dir; -static const struct file_operations recent_fops; +#ifdef CONFIG_NETFILTER_XT_MATCH_RECENT_PROC_COMPAT +static struct proc_dir_entry *proc_old_dir; +#endif +static struct proc_dir_entry *recent_proc_dir; +static const struct file_operations recent_old_fops, recent_mt_fops; #endif static u_int32_t hash_rnd; -static int hash_rnd_initted; +static bool hash_rnd_initted; + +static unsigned int recent_entry_hash4(const union nf_inet_addr *addr) +{ + if (!hash_rnd_initted) { + get_random_bytes(&hash_rnd, sizeof(hash_rnd)); + hash_rnd_initted = true; + } + return jhash_1word((__force u32)addr->ip, hash_rnd) & + (ip_list_hash_size - 1); +} -static unsigned int recent_entry_hash(__be32 addr) +static unsigned int recent_entry_hash6(const union nf_inet_addr *addr) { if (!hash_rnd_initted) { - get_random_bytes(&hash_rnd, 4); - hash_rnd_initted = 1; + get_random_bytes(&hash_rnd, sizeof(hash_rnd)); + hash_rnd_initted = true; } - return jhash_1word((__force u32)addr, hash_rnd) & (ip_list_hash_size - 1); + return jhash2((u32 *)addr->ip6, ARRAY_SIZE(addr->ip6), hash_rnd) & + (ip_list_hash_size - 1); } static struct recent_entry * -recent_entry_lookup(const struct recent_table *table, __be32 addr, u_int8_t ttl) +recent_entry_lookup(const struct recent_table *table, + const union nf_inet_addr *addrp, u_int16_t family, + u_int8_t ttl) { struct recent_entry *e; unsigned int h; - h = recent_entry_hash(addr); + if (family == NFPROTO_IPV4) + h = recent_entry_hash4(addrp); + else + h = recent_entry_hash6(addrp); + list_for_each_entry(e, &table->iphash[h], list) - if (e->addr == addr && (ttl == e->ttl || !ttl || !e->ttl)) + if (e->family == family && + memcmp(&e->addr, addrp, sizeof(e->addr)) == 0 && + (ttl == e->ttl || ttl == 0 || e->ttl == 0)) return e; return NULL; } @@ -117,7 +146,8 @@ static void recent_entry_remove(struct recent_table *t, struct recent_entry *e) } static struct recent_entry * -recent_entry_init(struct recent_table *t, __be32 addr, u_int8_t ttl) +recent_entry_init(struct recent_table *t, const union nf_inet_addr *addr, + u_int16_t family, u_int8_t ttl) { struct recent_entry *e; @@ -129,12 +159,16 @@ recent_entry_init(struct recent_table *t, __be32 addr, u_int8_t ttl) GFP_ATOMIC); if (e == NULL) return NULL; - e->addr = addr; + memcpy(&e->addr, addr, sizeof(e->addr)); e->ttl = ttl; e->stamps[0] = jiffies; e->nstamps = 1; e->index = 1; - list_add_tail(&e->list, &t->iphash[recent_entry_hash(addr)]); + e->family = family; + if (family == NFPROTO_IPV4) + list_add_tail(&e->list, &t->iphash[recent_entry_hash4(addr)]); + else + list_add_tail(&e->list, &t->iphash[recent_entry_hash6(addr)]); list_add_tail(&e->lru_list, &t->lru_list); t->entries++; return e; @@ -170,48 +204,59 @@ static void recent_table_flush(struct recent_table *t) } static bool -recent_mt(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, - bool *hotdrop) +recent_mt(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct ipt_recent_info *info = matchinfo; + const struct xt_recent_mtinfo *info = par->matchinfo; struct recent_table *t; struct recent_entry *e; - __be32 addr; + union nf_inet_addr addr = {}; u_int8_t ttl; bool ret = info->invert; - if (info->side == IPT_RECENT_DEST) - addr = ip_hdr(skb)->daddr; - else - addr = ip_hdr(skb)->saddr; + if (par->match->family == NFPROTO_IPV4) { + const struct iphdr *iph = ip_hdr(skb); + + if (info->side == XT_RECENT_DEST) + addr.ip = iph->daddr; + else + addr.ip = iph->saddr; + + ttl = iph->ttl; + } else { + const struct ipv6hdr *iph = ipv6_hdr(skb); + + if (info->side == XT_RECENT_DEST) + memcpy(&addr.in6, &iph->daddr, sizeof(addr.in6)); + else + memcpy(&addr.in6, &iph->saddr, sizeof(addr.in6)); + + ttl = iph->hop_limit; + } - ttl = ip_hdr(skb)->ttl; /* use TTL as seen before forwarding */ - if (out && !skb->sk) + if (par->out != NULL && skb->sk == NULL) ttl++; spin_lock_bh(&recent_lock); t = recent_table_lookup(info->name); - e = recent_entry_lookup(t, addr, - info->check_set & IPT_RECENT_TTL ? ttl : 0); + e = recent_entry_lookup(t, &addr, par->match->family, + (info->check_set & XT_RECENT_TTL) ? ttl : 0); if (e == NULL) { - if (!(info->check_set & IPT_RECENT_SET)) + if (!(info->check_set & XT_RECENT_SET)) goto out; - e = recent_entry_init(t, addr, ttl); + e = recent_entry_init(t, &addr, par->match->family, ttl); if (e == NULL) - *hotdrop = true; + *par->hotdrop = true; ret = !ret; goto out; } - if (info->check_set & IPT_RECENT_SET) + if (info->check_set & XT_RECENT_SET) ret = !ret; - else if (info->check_set & IPT_RECENT_REMOVE) { + else if (info->check_set & XT_RECENT_REMOVE) { recent_entry_remove(t, e); ret = !ret; - } else if (info->check_set & (IPT_RECENT_CHECK | IPT_RECENT_UPDATE)) { + } else if (info->check_set & (XT_RECENT_CHECK | XT_RECENT_UPDATE)) { unsigned long time = jiffies - info->seconds * HZ; unsigned int i, hits = 0; @@ -225,8 +270,8 @@ recent_mt(const struct sk_buff *skb, const struct net_device *in, } } - if (info->check_set & IPT_RECENT_SET || - (info->check_set & IPT_RECENT_UPDATE && ret)) { + if (info->check_set & XT_RECENT_SET || + (info->check_set & XT_RECENT_UPDATE && ret)) { recent_entry_update(t, e); e->ttl = ttl; } @@ -235,27 +280,24 @@ out: return ret; } -static bool -recent_mt_check(const char *tablename, const void *ip, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +static bool recent_mt_check(const struct xt_mtchk_param *par) { - const struct ipt_recent_info *info = matchinfo; + const struct xt_recent_mtinfo *info = par->matchinfo; struct recent_table *t; unsigned i; bool ret = false; if (hweight8(info->check_set & - (IPT_RECENT_SET | IPT_RECENT_REMOVE | - IPT_RECENT_CHECK | IPT_RECENT_UPDATE)) != 1) + (XT_RECENT_SET | XT_RECENT_REMOVE | + XT_RECENT_CHECK | XT_RECENT_UPDATE)) != 1) return false; - if ((info->check_set & (IPT_RECENT_SET | IPT_RECENT_REMOVE)) && + if ((info->check_set & (XT_RECENT_SET | XT_RECENT_REMOVE)) && (info->seconds || info->hit_count)) return false; if (info->hit_count > ip_pkt_list_tot) return false; if (info->name[0] == '\0' || - strnlen(info->name, IPT_RECENT_NAME_LEN) == IPT_RECENT_NAME_LEN) + strnlen(info->name, XT_RECENT_NAME_LEN) == XT_RECENT_NAME_LEN) return false; mutex_lock(&recent_mutex); @@ -276,11 +318,24 @@ recent_mt_check(const char *tablename, const void *ip, for (i = 0; i < ip_list_hash_size; i++) INIT_LIST_HEAD(&t->iphash[i]); #ifdef CONFIG_PROC_FS - t->proc = proc_create(t->name, ip_list_perms, proc_dir, &recent_fops); + t->proc = proc_create(t->name, ip_list_perms, recent_proc_dir, + &recent_mt_fops); if (t->proc == NULL) { kfree(t); goto out; } +#ifdef CONFIG_NETFILTER_XT_MATCH_RECENT_PROC_COMPAT + t->proc_old = proc_create(t->name, ip_list_perms, proc_old_dir, + &recent_old_fops); + if (t->proc_old == NULL) { + remove_proc_entry(t->name, proc_old_dir); + kfree(t); + goto out; + } + t->proc_old->uid = ip_list_uid; + t->proc_old->gid = ip_list_gid; + t->proc_old->data = t; +#endif t->proc->uid = ip_list_uid; t->proc->gid = ip_list_gid; t->proc->data = t; @@ -294,9 +349,9 @@ out: return ret; } -static void recent_mt_destroy(const struct xt_match *match, void *matchinfo) +static void recent_mt_destroy(const struct xt_mtdtor_param *par) { - const struct ipt_recent_info *info = matchinfo; + const struct xt_recent_mtinfo *info = par->matchinfo; struct recent_table *t; mutex_lock(&recent_mutex); @@ -306,7 +361,10 @@ static void recent_mt_destroy(const struct xt_match *match, void *matchinfo) list_del(&t->list); spin_unlock_bh(&recent_lock); #ifdef CONFIG_PROC_FS - remove_proc_entry(t->name, proc_dir); +#ifdef CONFIG_NETFILTER_XT_MATCH_RECENT_PROC_COMPAT + remove_proc_entry(t->name, proc_old_dir); +#endif + remove_proc_entry(t->name, recent_proc_dir); #endif recent_table_flush(t); kfree(t); @@ -316,7 +374,7 @@ static void recent_mt_destroy(const struct xt_match *match, void *matchinfo) #ifdef CONFIG_PROC_FS struct recent_iter_state { - struct recent_table *table; + const struct recent_table *table; unsigned int bucket; }; @@ -341,8 +399,8 @@ static void *recent_seq_next(struct seq_file *seq, void *v, loff_t *pos) { struct recent_iter_state *st = seq->private; const struct recent_table *t = st->table; - struct recent_entry *e = v; - struct list_head *head = e->list.next; + const struct recent_entry *e = v; + const struct list_head *head = e->list.next; while (head == &t->iphash[st->bucket]) { if (++st->bucket >= ip_list_hash_size) @@ -365,8 +423,14 @@ static int recent_seq_show(struct seq_file *seq, void *v) unsigned int i; i = (e->index - 1) % ip_pkt_list_tot; - seq_printf(seq, "src=%u.%u.%u.%u ttl: %u last_seen: %lu oldest_pkt: %u", - NIPQUAD(e->addr), e->ttl, e->stamps[i], e->index); + if (e->family == NFPROTO_IPV4) + seq_printf(seq, "src=" NIPQUAD_FMT " ttl: %u last_seen: %lu " + "oldest_pkt: %u", NIPQUAD(e->addr.ip), e->ttl, + e->stamps[i], e->index); + else + seq_printf(seq, "src=" NIP6_FMT " ttl: %u last_seen: %lu " + "oldest_pkt: %u", NIP6(e->addr.in6), e->ttl, + e->stamps[i], e->index); for (i = 0; i < e->nstamps; i++) seq_printf(seq, "%s %lu", i ? "," : "", e->stamps[i]); seq_printf(seq, "\n"); @@ -393,8 +457,22 @@ static int recent_seq_open(struct inode *inode, struct file *file) return 0; } -static ssize_t recent_proc_write(struct file *file, const char __user *input, - size_t size, loff_t *loff) +#ifdef CONFIG_NETFILTER_XT_MATCH_RECENT_PROC_COMPAT +static int recent_old_seq_open(struct inode *inode, struct file *filp) +{ + static bool warned_of_old; + + if (unlikely(!warned_of_old)) { + printk(KERN_INFO KBUILD_MODNAME ": Use of /proc/net/ipt_recent" + " is deprecated; use /proc/net/xt_recent.\n"); + warned_of_old = true; + } + return recent_seq_open(inode, filp); +} + +static ssize_t recent_old_proc_write(struct file *file, + const char __user *input, + size_t size, loff_t *loff) { const struct proc_dir_entry *pde = PDE(file->f_path.dentry->d_inode); struct recent_table *t = pde->data; @@ -407,6 +485,7 @@ static ssize_t recent_proc_write(struct file *file, const char __user *input, size = sizeof(buf); if (copy_from_user(buf, input, size)) return -EFAULT; + while (isspace(*c)) c++; @@ -434,10 +513,11 @@ static ssize_t recent_proc_write(struct file *file, const char __user *input, addr = in_aton(c); spin_lock_bh(&recent_lock); - e = recent_entry_lookup(t, addr, 0); + e = recent_entry_lookup(t, (const void *)&addr, NFPROTO_IPV4, 0); if (e == NULL) { if (add) - recent_entry_init(t, addr, 0); + recent_entry_init(t, (const void *)&addr, + NFPROTO_IPV4, 0); } else { if (add) recent_entry_update(t, e); @@ -448,23 +528,118 @@ static ssize_t recent_proc_write(struct file *file, const char __user *input, return size; } -static const struct file_operations recent_fops = { - .open = recent_seq_open, +static const struct file_operations recent_old_fops = { + .open = recent_old_seq_open, .read = seq_read, - .write = recent_proc_write, + .write = recent_old_proc_write, .release = seq_release_private, .owner = THIS_MODULE, }; +#endif + +static ssize_t +recent_mt_proc_write(struct file *file, const char __user *input, + size_t size, loff_t *loff) +{ + const struct proc_dir_entry *pde = PDE(file->f_path.dentry->d_inode); + struct recent_table *t = pde->data; + struct recent_entry *e; + char buf[sizeof("+b335:1d35:1e55:dead:c0de:1715:5afe:c0de")]; + const char *c = buf; + union nf_inet_addr addr; + u_int16_t family; + bool add, succ; + + if (size == 0) + return 0; + if (size > sizeof(buf)) + size = sizeof(buf); + if (copy_from_user(buf, input, size) != 0) + return -EFAULT; + + /* Strict protocol! */ + if (*loff != 0) + return -ESPIPE; + switch (*c) { + case '/': /* flush table */ + spin_lock_bh(&recent_lock); + recent_table_flush(t); + spin_unlock_bh(&recent_lock); + return size; + case '-': /* remove address */ + add = false; + break; + case '+': /* add address */ + add = true; + break; + default: + printk(KERN_INFO KBUILD_MODNAME ": Need +ip, -ip or /\n"); + return -EINVAL; + } + + ++c; + --size; + if (strnchr(c, size, ':') != NULL) { + family = NFPROTO_IPV6; + succ = in6_pton(c, size, (void *)&addr, '\n', NULL); + } else { + family = NFPROTO_IPV4; + succ = in4_pton(c, size, (void *)&addr, '\n', NULL); + } + + if (!succ) { + printk(KERN_INFO KBUILD_MODNAME ": illegal address written " + "to procfs\n"); + return -EINVAL; + } + + spin_lock_bh(&recent_lock); + e = recent_entry_lookup(t, &addr, family, 0); + if (e == NULL) { + if (add) + recent_entry_init(t, &addr, family, 0); + } else { + if (add) + recent_entry_update(t, e); + else + recent_entry_remove(t, e); + } + spin_unlock_bh(&recent_lock); + /* Note we removed one above */ + *loff += size + 1; + return size + 1; +} + +static const struct file_operations recent_mt_fops = { + .open = recent_seq_open, + .read = seq_read, + .write = recent_mt_proc_write, + .release = seq_release_private, + .owner = THIS_MODULE, +}; #endif /* CONFIG_PROC_FS */ -static struct xt_match recent_mt_reg __read_mostly = { - .name = "recent", - .family = AF_INET, - .match = recent_mt, - .matchsize = sizeof(struct ipt_recent_info), - .checkentry = recent_mt_check, - .destroy = recent_mt_destroy, - .me = THIS_MODULE, +static struct xt_match recent_mt_reg[] __read_mostly = { + { + .name = "recent", + .revision = 0, + .family = NFPROTO_IPV4, + .match = recent_mt, + .matchsize = sizeof(struct xt_recent_mtinfo), + .checkentry = recent_mt_check, + .destroy = recent_mt_destroy, + .me = THIS_MODULE, + }, + { + .name = "recent", + .revision = 0, + .family = NFPROTO_IPV6, + .match = recent_mt, + .matchsize = sizeof(struct xt_recent_mtinfo), + .checkentry = recent_mt_check, + .destroy = recent_mt_destroy, + .me = THIS_MODULE, + }, }; static int __init recent_mt_init(void) @@ -475,26 +650,39 @@ static int __init recent_mt_init(void) return -EINVAL; ip_list_hash_size = 1 << fls(ip_list_tot); - err = xt_register_match(&recent_mt_reg); + err = xt_register_matches(recent_mt_reg, ARRAY_SIZE(recent_mt_reg)); #ifdef CONFIG_PROC_FS if (err) return err; - proc_dir = proc_mkdir("ipt_recent", init_net.proc_net); - if (proc_dir == NULL) { - xt_unregister_match(&recent_mt_reg); + recent_proc_dir = proc_mkdir("xt_recent", init_net.proc_net); + if (recent_proc_dir == NULL) { + xt_unregister_matches(recent_mt_reg, ARRAY_SIZE(recent_mt_reg)); + err = -ENOMEM; + } +#ifdef CONFIG_NETFILTER_XT_MATCH_RECENT_PROC_COMPAT + if (err < 0) + return err; + proc_old_dir = proc_mkdir("ipt_recent", init_net.proc_net); + if (proc_old_dir == NULL) { + remove_proc_entry("xt_recent", init_net.proc_net); + xt_unregister_matches(recent_mt_reg, ARRAY_SIZE(recent_mt_reg)); err = -ENOMEM; } #endif +#endif return err; } static void __exit recent_mt_exit(void) { BUG_ON(!list_empty(&tables)); - xt_unregister_match(&recent_mt_reg); + xt_unregister_matches(recent_mt_reg, ARRAY_SIZE(recent_mt_reg)); #ifdef CONFIG_PROC_FS +#ifdef CONFIG_NETFILTER_XT_MATCH_RECENT_PROC_COMPAT remove_proc_entry("ipt_recent", init_net.proc_net); #endif + remove_proc_entry("xt_recent", init_net.proc_net); +#endif } module_init(recent_mt_init); diff --git a/net/netfilter/xt_sctp.c b/net/netfilter/xt_sctp.c index e6e4681fa047..e223cb43ae8e 100644 --- a/net/netfilter/xt_sctp.c +++ b/net/netfilter/xt_sctp.c @@ -117,23 +117,21 @@ match_packet(const struct sk_buff *skb, } static bool -sctp_mt(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, bool *hotdrop) +sctp_mt(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct xt_sctp_info *info = matchinfo; + const struct xt_sctp_info *info = par->matchinfo; const sctp_sctphdr_t *sh; sctp_sctphdr_t _sh; - if (offset) { + if (par->fragoff != 0) { duprintf("Dropping non-first fragment.. FIXME\n"); return false; } - sh = skb_header_pointer(skb, protoff, sizeof(_sh), &_sh); + sh = skb_header_pointer(skb, par->thoff, sizeof(_sh), &_sh); if (sh == NULL) { duprintf("Dropping evil TCP offset=0 tinygram.\n"); - *hotdrop = true; + *par->hotdrop = true; return false; } duprintf("spt: %d\tdpt: %d\n", ntohs(sh->source), ntohs(sh->dest)); @@ -144,17 +142,14 @@ sctp_mt(const struct sk_buff *skb, const struct net_device *in, && SCCHECK(ntohs(sh->dest) >= info->dpts[0] && ntohs(sh->dest) <= info->dpts[1], XT_SCTP_DEST_PORTS, info->flags, info->invflags) - && SCCHECK(match_packet(skb, protoff + sizeof (sctp_sctphdr_t), - info, hotdrop), + && SCCHECK(match_packet(skb, par->thoff + sizeof(sctp_sctphdr_t), + info, par->hotdrop), XT_SCTP_CHUNK_TYPES, info->flags, info->invflags); } -static bool -sctp_mt_check(const char *tablename, const void *inf, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +static bool sctp_mt_check(const struct xt_mtchk_param *par) { - const struct xt_sctp_info *info = matchinfo; + const struct xt_sctp_info *info = par->matchinfo; return !(info->flags & ~XT_SCTP_VALID_FLAGS) && !(info->invflags & ~XT_SCTP_VALID_FLAGS) @@ -169,7 +164,7 @@ sctp_mt_check(const char *tablename, const void *inf, static struct xt_match sctp_mt_reg[] __read_mostly = { { .name = "sctp", - .family = AF_INET, + .family = NFPROTO_IPV4, .checkentry = sctp_mt_check, .match = sctp_mt, .matchsize = sizeof(struct xt_sctp_info), @@ -178,7 +173,7 @@ static struct xt_match sctp_mt_reg[] __read_mostly = { }, { .name = "sctp", - .family = AF_INET6, + .family = NFPROTO_IPV6, .checkentry = sctp_mt_check, .match = sctp_mt, .matchsize = sizeof(struct xt_sctp_info), diff --git a/net/netfilter/xt_socket.c b/net/netfilter/xt_socket.c new file mode 100644 index 000000000000..02a8fed21082 --- /dev/null +++ b/net/netfilter/xt_socket.c @@ -0,0 +1,185 @@ +/* + * Transparent proxy support for Linux/iptables + * + * Copyright (C) 2007-2008 BalaBit IT Ltd. + * Author: Krisztian Kovacs + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#include <linux/module.h> +#include <linux/skbuff.h> +#include <linux/netfilter/x_tables.h> +#include <linux/netfilter_ipv4/ip_tables.h> +#include <net/tcp.h> +#include <net/udp.h> +#include <net/icmp.h> +#include <net/sock.h> +#include <net/inet_sock.h> +#include <net/netfilter/nf_tproxy_core.h> +#include <net/netfilter/ipv4/nf_defrag_ipv4.h> + +#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE) +#define XT_SOCKET_HAVE_CONNTRACK 1 +#include <net/netfilter/nf_conntrack.h> +#endif + +static int +extract_icmp_fields(const struct sk_buff *skb, + u8 *protocol, + __be32 *raddr, + __be32 *laddr, + __be16 *rport, + __be16 *lport) +{ + unsigned int outside_hdrlen = ip_hdrlen(skb); + struct iphdr *inside_iph, _inside_iph; + struct icmphdr *icmph, _icmph; + __be16 *ports, _ports[2]; + + icmph = skb_header_pointer(skb, outside_hdrlen, + sizeof(_icmph), &_icmph); + if (icmph == NULL) + return 1; + + switch (icmph->type) { + case ICMP_DEST_UNREACH: + case ICMP_SOURCE_QUENCH: + case ICMP_REDIRECT: + case ICMP_TIME_EXCEEDED: + case ICMP_PARAMETERPROB: + break; + default: + return 1; + } + + inside_iph = skb_header_pointer(skb, outside_hdrlen + + sizeof(struct icmphdr), + sizeof(_inside_iph), &_inside_iph); + if (inside_iph == NULL) + return 1; + + if (inside_iph->protocol != IPPROTO_TCP && + inside_iph->protocol != IPPROTO_UDP) + return 1; + + ports = skb_header_pointer(skb, outside_hdrlen + + sizeof(struct icmphdr) + + (inside_iph->ihl << 2), + sizeof(_ports), &_ports); + if (ports == NULL) + return 1; + + /* the inside IP packet is the one quoted from our side, thus + * its saddr is the local address */ + *protocol = inside_iph->protocol; + *laddr = inside_iph->saddr; + *lport = ports[0]; + *raddr = inside_iph->daddr; + *rport = ports[1]; + + return 0; +} + + +static bool +socket_mt(const struct sk_buff *skb, const struct xt_match_param *par) +{ + const struct iphdr *iph = ip_hdr(skb); + struct udphdr _hdr, *hp = NULL; + struct sock *sk; + __be32 daddr, saddr; + __be16 dport, sport; + u8 protocol; +#ifdef XT_SOCKET_HAVE_CONNTRACK + struct nf_conn const *ct; + enum ip_conntrack_info ctinfo; +#endif + + if (iph->protocol == IPPROTO_UDP || iph->protocol == IPPROTO_TCP) { + hp = skb_header_pointer(skb, ip_hdrlen(skb), + sizeof(_hdr), &_hdr); + if (hp == NULL) + return false; + + protocol = iph->protocol; + saddr = iph->saddr; + sport = hp->source; + daddr = iph->daddr; + dport = hp->dest; + + } else if (iph->protocol == IPPROTO_ICMP) { + if (extract_icmp_fields(skb, &protocol, &saddr, &daddr, + &sport, &dport)) + return false; + } else { + return false; + } + +#ifdef XT_SOCKET_HAVE_CONNTRACK + /* Do the lookup with the original socket address in case this is a + * reply packet of an established SNAT-ted connection. */ + + ct = nf_ct_get(skb, &ctinfo); + if (ct && (ct != &nf_conntrack_untracked) && + ((iph->protocol != IPPROTO_ICMP && + ctinfo == IP_CT_IS_REPLY + IP_CT_ESTABLISHED) || + (iph->protocol == IPPROTO_ICMP && + ctinfo == IP_CT_IS_REPLY + IP_CT_RELATED)) && + (ct->status & IPS_SRC_NAT_DONE)) { + + daddr = ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.u3.ip; + dport = (iph->protocol == IPPROTO_TCP) ? + ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.u.tcp.port : + ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.u.udp.port; + } +#endif + + sk = nf_tproxy_get_sock_v4(dev_net(skb->dev), protocol, + saddr, daddr, sport, dport, par->in, false); + if (sk != NULL) { + bool wildcard = (inet_sk(sk)->rcv_saddr == 0); + + nf_tproxy_put_sock(sk); + if (wildcard) + sk = NULL; + } + + pr_debug("socket match: proto %u %08x:%u -> %08x:%u " + "(orig %08x:%u) sock %p\n", + protocol, ntohl(saddr), ntohs(sport), + ntohl(daddr), ntohs(dport), + ntohl(iph->daddr), hp ? ntohs(hp->dest) : 0, sk); + + return (sk != NULL); +} + +static struct xt_match socket_mt_reg __read_mostly = { + .name = "socket", + .family = AF_INET, + .match = socket_mt, + .hooks = 1 << NF_INET_PRE_ROUTING, + .me = THIS_MODULE, +}; + +static int __init socket_mt_init(void) +{ + nf_defrag_ipv4_enable(); + return xt_register_match(&socket_mt_reg); +} + +static void __exit socket_mt_exit(void) +{ + xt_unregister_match(&socket_mt_reg); +} + +module_init(socket_mt_init); +module_exit(socket_mt_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Krisztian Kovacs, Balazs Scheidler"); +MODULE_DESCRIPTION("x_tables socket match module"); +MODULE_ALIAS("ipt_socket"); diff --git a/net/netfilter/xt_state.c b/net/netfilter/xt_state.c index a776dc36a193..4c946cbd731f 100644 --- a/net/netfilter/xt_state.c +++ b/net/netfilter/xt_state.c @@ -21,12 +21,9 @@ MODULE_ALIAS("ipt_state"); MODULE_ALIAS("ip6t_state"); static bool -state_mt(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, - bool *hotdrop) +state_mt(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct xt_state_info *sinfo = matchinfo; + const struct xt_state_info *sinfo = par->matchinfo; enum ip_conntrack_info ctinfo; unsigned int statebit; @@ -40,28 +37,25 @@ state_mt(const struct sk_buff *skb, const struct net_device *in, return (sinfo->statemask & statebit); } -static bool -state_mt_check(const char *tablename, const void *inf, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +static bool state_mt_check(const struct xt_mtchk_param *par) { - if (nf_ct_l3proto_try_module_get(match->family) < 0) { + if (nf_ct_l3proto_try_module_get(par->match->family) < 0) { printk(KERN_WARNING "can't load conntrack support for " - "proto=%u\n", match->family); + "proto=%u\n", par->match->family); return false; } return true; } -static void state_mt_destroy(const struct xt_match *match, void *matchinfo) +static void state_mt_destroy(const struct xt_mtdtor_param *par) { - nf_ct_l3proto_module_put(match->family); + nf_ct_l3proto_module_put(par->match->family); } static struct xt_match state_mt_reg[] __read_mostly = { { .name = "state", - .family = AF_INET, + .family = NFPROTO_IPV4, .checkentry = state_mt_check, .match = state_mt, .destroy = state_mt_destroy, @@ -70,7 +64,7 @@ static struct xt_match state_mt_reg[] __read_mostly = { }, { .name = "state", - .family = AF_INET6, + .family = NFPROTO_IPV6, .checkentry = state_mt_check, .match = state_mt, .destroy = state_mt_destroy, diff --git a/net/netfilter/xt_statistic.c b/net/netfilter/xt_statistic.c index 43133080da7d..0d75141139d5 100644 --- a/net/netfilter/xt_statistic.c +++ b/net/netfilter/xt_statistic.c @@ -25,12 +25,9 @@ MODULE_ALIAS("ip6t_statistic"); static DEFINE_SPINLOCK(nth_lock); static bool -statistic_mt(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, - bool *hotdrop) +statistic_mt(const struct sk_buff *skb, const struct xt_match_param *par) { - struct xt_statistic_info *info = (struct xt_statistic_info *)matchinfo; + struct xt_statistic_info *info = (void *)par->matchinfo; bool ret = info->flags & XT_STATISTIC_INVERT; switch (info->mode) { @@ -52,12 +49,9 @@ statistic_mt(const struct sk_buff *skb, const struct net_device *in, return ret; } -static bool -statistic_mt_check(const char *tablename, const void *entry, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +static bool statistic_mt_check(const struct xt_mtchk_param *par) { - struct xt_statistic_info *info = matchinfo; + struct xt_statistic_info *info = par->matchinfo; if (info->mode > XT_STATISTIC_MODE_MAX || info->flags & ~XT_STATISTIC_MASK) @@ -66,35 +60,24 @@ statistic_mt_check(const char *tablename, const void *entry, return true; } -static struct xt_match statistic_mt_reg[] __read_mostly = { - { - .name = "statistic", - .family = AF_INET, - .checkentry = statistic_mt_check, - .match = statistic_mt, - .matchsize = sizeof(struct xt_statistic_info), - .me = THIS_MODULE, - }, - { - .name = "statistic", - .family = AF_INET6, - .checkentry = statistic_mt_check, - .match = statistic_mt, - .matchsize = sizeof(struct xt_statistic_info), - .me = THIS_MODULE, - }, +static struct xt_match xt_statistic_mt_reg __read_mostly = { + .name = "statistic", + .revision = 0, + .family = NFPROTO_UNSPEC, + .match = statistic_mt, + .checkentry = statistic_mt_check, + .matchsize = sizeof(struct xt_statistic_info), + .me = THIS_MODULE, }; static int __init statistic_mt_init(void) { - return xt_register_matches(statistic_mt_reg, - ARRAY_SIZE(statistic_mt_reg)); + return xt_register_match(&xt_statistic_mt_reg); } static void __exit statistic_mt_exit(void) { - xt_unregister_matches(statistic_mt_reg, - ARRAY_SIZE(statistic_mt_reg)); + xt_unregister_match(&xt_statistic_mt_reg); } module_init(statistic_mt_init); diff --git a/net/netfilter/xt_string.c b/net/netfilter/xt_string.c index 4903182a062b..b4d774111311 100644 --- a/net/netfilter/xt_string.c +++ b/net/netfilter/xt_string.c @@ -22,18 +22,15 @@ MODULE_ALIAS("ipt_string"); MODULE_ALIAS("ip6t_string"); static bool -string_mt(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, - bool *hotdrop) +string_mt(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct xt_string_info *conf = matchinfo; + const struct xt_string_info *conf = par->matchinfo; struct ts_state state; int invert; memset(&state, 0, sizeof(struct ts_state)); - invert = (match->revision == 0 ? conf->u.v0.invert : + invert = (par->match->revision == 0 ? conf->u.v0.invert : conf->u.v1.flags & XT_STRING_FLAG_INVERT); return (skb_find_text((struct sk_buff *)skb, conf->from_offset, @@ -43,12 +40,9 @@ string_mt(const struct sk_buff *skb, const struct net_device *in, #define STRING_TEXT_PRIV(m) ((struct xt_string_info *)(m)) -static bool -string_mt_check(const char *tablename, const void *ip, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +static bool string_mt_check(const struct xt_mtchk_param *par) { - struct xt_string_info *conf = matchinfo; + struct xt_string_info *conf = par->matchinfo; struct ts_config *ts_conf; int flags = TS_AUTOLOAD; @@ -59,7 +53,7 @@ string_mt_check(const char *tablename, const void *ip, return false; if (conf->patlen > XT_STRING_MAX_PATTERN_SIZE) return false; - if (match->revision == 1) { + if (par->match->revision == 1) { if (conf->u.v1.flags & ~(XT_STRING_FLAG_IGNORECASE | XT_STRING_FLAG_INVERT)) return false; @@ -76,36 +70,16 @@ string_mt_check(const char *tablename, const void *ip, return true; } -static void string_mt_destroy(const struct xt_match *match, void *matchinfo) +static void string_mt_destroy(const struct xt_mtdtor_param *par) { - textsearch_destroy(STRING_TEXT_PRIV(matchinfo)->config); + textsearch_destroy(STRING_TEXT_PRIV(par->matchinfo)->config); } -static struct xt_match string_mt_reg[] __read_mostly = { - { - .name = "string", - .revision = 0, - .family = AF_INET, - .checkentry = string_mt_check, - .match = string_mt, - .destroy = string_mt_destroy, - .matchsize = sizeof(struct xt_string_info), - .me = THIS_MODULE - }, - { - .name = "string", - .revision = 1, - .family = AF_INET, - .checkentry = string_mt_check, - .match = string_mt, - .destroy = string_mt_destroy, - .matchsize = sizeof(struct xt_string_info), - .me = THIS_MODULE - }, +static struct xt_match xt_string_mt_reg[] __read_mostly = { { .name = "string", .revision = 0, - .family = AF_INET6, + .family = NFPROTO_UNSPEC, .checkentry = string_mt_check, .match = string_mt, .destroy = string_mt_destroy, @@ -115,7 +89,7 @@ static struct xt_match string_mt_reg[] __read_mostly = { { .name = "string", .revision = 1, - .family = AF_INET6, + .family = NFPROTO_UNSPEC, .checkentry = string_mt_check, .match = string_mt, .destroy = string_mt_destroy, @@ -126,12 +100,13 @@ static struct xt_match string_mt_reg[] __read_mostly = { static int __init string_mt_init(void) { - return xt_register_matches(string_mt_reg, ARRAY_SIZE(string_mt_reg)); + return xt_register_matches(xt_string_mt_reg, + ARRAY_SIZE(xt_string_mt_reg)); } static void __exit string_mt_exit(void) { - xt_unregister_matches(string_mt_reg, ARRAY_SIZE(string_mt_reg)); + xt_unregister_matches(xt_string_mt_reg, ARRAY_SIZE(xt_string_mt_reg)); } module_init(string_mt_init); diff --git a/net/netfilter/xt_tcpmss.c b/net/netfilter/xt_tcpmss.c index 6771bf01275b..4809b34b10f8 100644 --- a/net/netfilter/xt_tcpmss.c +++ b/net/netfilter/xt_tcpmss.c @@ -25,12 +25,9 @@ MODULE_ALIAS("ipt_tcpmss"); MODULE_ALIAS("ip6t_tcpmss"); static bool -tcpmss_mt(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, - bool *hotdrop) +tcpmss_mt(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct xt_tcpmss_match_info *info = matchinfo; + const struct xt_tcpmss_match_info *info = par->matchinfo; const struct tcphdr *th; struct tcphdr _tcph; /* tcp.doff is only 4 bits, ie. max 15 * 4 bytes */ @@ -39,7 +36,7 @@ tcpmss_mt(const struct sk_buff *skb, const struct net_device *in, unsigned int i, optlen; /* If we don't have the whole header, drop packet. */ - th = skb_header_pointer(skb, protoff, sizeof(_tcph), &_tcph); + th = skb_header_pointer(skb, par->thoff, sizeof(_tcph), &_tcph); if (th == NULL) goto dropit; @@ -52,7 +49,7 @@ tcpmss_mt(const struct sk_buff *skb, const struct net_device *in, goto out; /* Truncated options. */ - op = skb_header_pointer(skb, protoff + sizeof(*th), optlen, _opt); + op = skb_header_pointer(skb, par->thoff + sizeof(*th), optlen, _opt); if (op == NULL) goto dropit; @@ -76,14 +73,14 @@ out: return info->invert; dropit: - *hotdrop = true; + *par->hotdrop = true; return false; } static struct xt_match tcpmss_mt_reg[] __read_mostly = { { .name = "tcpmss", - .family = AF_INET, + .family = NFPROTO_IPV4, .match = tcpmss_mt, .matchsize = sizeof(struct xt_tcpmss_match_info), .proto = IPPROTO_TCP, @@ -91,7 +88,7 @@ static struct xt_match tcpmss_mt_reg[] __read_mostly = { }, { .name = "tcpmss", - .family = AF_INET6, + .family = NFPROTO_IPV6, .match = tcpmss_mt, .matchsize = sizeof(struct xt_tcpmss_match_info), .proto = IPPROTO_TCP, diff --git a/net/netfilter/xt_tcpudp.c b/net/netfilter/xt_tcpudp.c index 951b06b8d701..1ebdc4934eed 100644 --- a/net/netfilter/xt_tcpudp.c +++ b/net/netfilter/xt_tcpudp.c @@ -68,25 +68,22 @@ tcp_find_option(u_int8_t option, return invert; } -static bool -tcp_mt(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, bool *hotdrop) +static bool tcp_mt(const struct sk_buff *skb, const struct xt_match_param *par) { const struct tcphdr *th; struct tcphdr _tcph; - const struct xt_tcp *tcpinfo = matchinfo; + const struct xt_tcp *tcpinfo = par->matchinfo; - if (offset) { + if (par->fragoff != 0) { /* To quote Alan: Don't allow a fragment of TCP 8 bytes in. Nobody normal causes this. Its a cracker trying to break in by doing a flag overwrite to pass the direction checks. */ - if (offset == 1) { + if (par->fragoff == 1) { duprintf("Dropping evil TCP offset=1 frag.\n"); - *hotdrop = true; + *par->hotdrop = true; } /* Must not be a fragment. */ return false; @@ -94,12 +91,12 @@ tcp_mt(const struct sk_buff *skb, const struct net_device *in, #define FWINVTCP(bool, invflg) ((bool) ^ !!(tcpinfo->invflags & (invflg))) - th = skb_header_pointer(skb, protoff, sizeof(_tcph), &_tcph); + th = skb_header_pointer(skb, par->thoff, sizeof(_tcph), &_tcph); if (th == NULL) { /* We've been asked to examine this packet, and we can't. Hence, no choice but to drop. */ duprintf("Dropping evil TCP offset=0 tinygram.\n"); - *hotdrop = true; + *par->hotdrop = true; return false; } @@ -117,49 +114,42 @@ tcp_mt(const struct sk_buff *skb, const struct net_device *in, return false; if (tcpinfo->option) { if (th->doff * 4 < sizeof(_tcph)) { - *hotdrop = true; + *par->hotdrop = true; return false; } - if (!tcp_find_option(tcpinfo->option, skb, protoff, + if (!tcp_find_option(tcpinfo->option, skb, par->thoff, th->doff*4 - sizeof(_tcph), tcpinfo->invflags & XT_TCP_INV_OPTION, - hotdrop)) + par->hotdrop)) return false; } return true; } -/* Called when user tries to insert an entry of this type. */ -static bool -tcp_mt_check(const char *tablename, const void *info, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +static bool tcp_mt_check(const struct xt_mtchk_param *par) { - const struct xt_tcp *tcpinfo = matchinfo; + const struct xt_tcp *tcpinfo = par->matchinfo; /* Must specify no unknown invflags */ return !(tcpinfo->invflags & ~XT_TCP_INV_MASK); } -static bool -udp_mt(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, bool *hotdrop) +static bool udp_mt(const struct sk_buff *skb, const struct xt_match_param *par) { const struct udphdr *uh; struct udphdr _udph; - const struct xt_udp *udpinfo = matchinfo; + const struct xt_udp *udpinfo = par->matchinfo; /* Must not be a fragment. */ - if (offset) + if (par->fragoff != 0) return false; - uh = skb_header_pointer(skb, protoff, sizeof(_udph), &_udph); + uh = skb_header_pointer(skb, par->thoff, sizeof(_udph), &_udph); if (uh == NULL) { /* We've been asked to examine this packet, and we can't. Hence, no choice but to drop. */ duprintf("Dropping evil UDP tinygram.\n"); - *hotdrop = true; + *par->hotdrop = true; return false; } @@ -171,13 +161,9 @@ udp_mt(const struct sk_buff *skb, const struct net_device *in, !!(udpinfo->invflags & XT_UDP_INV_DSTPT)); } -/* Called when user tries to insert an entry of this type. */ -static bool -udp_mt_check(const char *tablename, const void *info, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +static bool udp_mt_check(const struct xt_mtchk_param *par) { - const struct xt_udp *udpinfo = matchinfo; + const struct xt_udp *udpinfo = par->matchinfo; /* Must specify no unknown invflags */ return !(udpinfo->invflags & ~XT_UDP_INV_MASK); @@ -186,7 +172,7 @@ udp_mt_check(const char *tablename, const void *info, static struct xt_match tcpudp_mt_reg[] __read_mostly = { { .name = "tcp", - .family = AF_INET, + .family = NFPROTO_IPV4, .checkentry = tcp_mt_check, .match = tcp_mt, .matchsize = sizeof(struct xt_tcp), @@ -195,7 +181,7 @@ static struct xt_match tcpudp_mt_reg[] __read_mostly = { }, { .name = "tcp", - .family = AF_INET6, + .family = NFPROTO_IPV6, .checkentry = tcp_mt_check, .match = tcp_mt, .matchsize = sizeof(struct xt_tcp), @@ -204,7 +190,7 @@ static struct xt_match tcpudp_mt_reg[] __read_mostly = { }, { .name = "udp", - .family = AF_INET, + .family = NFPROTO_IPV4, .checkentry = udp_mt_check, .match = udp_mt, .matchsize = sizeof(struct xt_udp), @@ -213,7 +199,7 @@ static struct xt_match tcpudp_mt_reg[] __read_mostly = { }, { .name = "udp", - .family = AF_INET6, + .family = NFPROTO_IPV6, .checkentry = udp_mt_check, .match = udp_mt, .matchsize = sizeof(struct xt_udp), @@ -222,7 +208,7 @@ static struct xt_match tcpudp_mt_reg[] __read_mostly = { }, { .name = "udplite", - .family = AF_INET, + .family = NFPROTO_IPV4, .checkentry = udp_mt_check, .match = udp_mt, .matchsize = sizeof(struct xt_udp), @@ -231,7 +217,7 @@ static struct xt_match tcpudp_mt_reg[] __read_mostly = { }, { .name = "udplite", - .family = AF_INET6, + .family = NFPROTO_IPV6, .checkentry = udp_mt_check, .match = udp_mt, .matchsize = sizeof(struct xt_udp), diff --git a/net/netfilter/xt_time.c b/net/netfilter/xt_time.c index 307a2c3c2df4..29375ba8db73 100644 --- a/net/netfilter/xt_time.c +++ b/net/netfilter/xt_time.c @@ -153,11 +153,9 @@ static void localtime_3(struct xtm *r, time_t time) } static bool -time_mt(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, bool *hotdrop) +time_mt(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct xt_time_info *info = matchinfo; + const struct xt_time_info *info = par->matchinfo; unsigned int packet_time; struct xtm current_time; s64 stamp; @@ -220,12 +218,9 @@ time_mt(const struct sk_buff *skb, const struct net_device *in, return true; } -static bool -time_mt_check(const char *tablename, const void *ip, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +static bool time_mt_check(const struct xt_mtchk_param *par) { - const struct xt_time_info *info = matchinfo; + const struct xt_time_info *info = par->matchinfo; if (info->daytime_start > XT_TIME_MAX_DAYTIME || info->daytime_stop > XT_TIME_MAX_DAYTIME) { @@ -237,33 +232,23 @@ time_mt_check(const char *tablename, const void *ip, return true; } -static struct xt_match time_mt_reg[] __read_mostly = { - { - .name = "time", - .family = AF_INET, - .match = time_mt, - .matchsize = sizeof(struct xt_time_info), - .checkentry = time_mt_check, - .me = THIS_MODULE, - }, - { - .name = "time", - .family = AF_INET6, - .match = time_mt, - .matchsize = sizeof(struct xt_time_info), - .checkentry = time_mt_check, - .me = THIS_MODULE, - }, +static struct xt_match xt_time_mt_reg __read_mostly = { + .name = "time", + .family = NFPROTO_UNSPEC, + .match = time_mt, + .checkentry = time_mt_check, + .matchsize = sizeof(struct xt_time_info), + .me = THIS_MODULE, }; static int __init time_mt_init(void) { - return xt_register_matches(time_mt_reg, ARRAY_SIZE(time_mt_reg)); + return xt_register_match(&xt_time_mt_reg); } static void __exit time_mt_exit(void) { - xt_unregister_matches(time_mt_reg, ARRAY_SIZE(time_mt_reg)); + xt_unregister_match(&xt_time_mt_reg); } module_init(time_mt_init); diff --git a/net/netfilter/xt_u32.c b/net/netfilter/xt_u32.c index 627e0f336d54..24a527624500 100644 --- a/net/netfilter/xt_u32.c +++ b/net/netfilter/xt_u32.c @@ -87,43 +87,32 @@ static bool u32_match_it(const struct xt_u32 *data, return true; } -static bool -u32_mt(const struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, const struct xt_match *match, - const void *matchinfo, int offset, unsigned int protoff, bool *hotdrop) +static bool u32_mt(const struct sk_buff *skb, const struct xt_match_param *par) { - const struct xt_u32 *data = matchinfo; + const struct xt_u32 *data = par->matchinfo; bool ret; ret = u32_match_it(data, skb); return ret ^ data->invert; } -static struct xt_match u32_mt_reg[] __read_mostly = { - { - .name = "u32", - .family = AF_INET, - .match = u32_mt, - .matchsize = sizeof(struct xt_u32), - .me = THIS_MODULE, - }, - { - .name = "u32", - .family = AF_INET6, - .match = u32_mt, - .matchsize = sizeof(struct xt_u32), - .me = THIS_MODULE, - }, +static struct xt_match xt_u32_mt_reg __read_mostly = { + .name = "u32", + .revision = 0, + .family = NFPROTO_UNSPEC, + .match = u32_mt, + .matchsize = sizeof(struct xt_u32), + .me = THIS_MODULE, }; static int __init u32_mt_init(void) { - return xt_register_matches(u32_mt_reg, ARRAY_SIZE(u32_mt_reg)); + return xt_register_match(&xt_u32_mt_reg); } static void __exit u32_mt_exit(void) { - xt_unregister_matches(u32_mt_reg, ARRAY_SIZE(u32_mt_reg)); + xt_unregister_match(&xt_u32_mt_reg); } module_init(u32_mt_init); diff --git a/net/sched/act_ipt.c b/net/sched/act_ipt.c index d1263b3c96c3..0453d79ebf57 100644 --- a/net/sched/act_ipt.c +++ b/net/sched/act_ipt.c @@ -40,6 +40,7 @@ static struct tcf_hashinfo ipt_hash_info = { static int ipt_init_target(struct ipt_entry_target *t, char *table, unsigned int hook) { + struct xt_tgchk_param par; struct xt_target *target; int ret = 0; @@ -49,29 +50,30 @@ static int ipt_init_target(struct ipt_entry_target *t, char *table, unsigned int return -ENOENT; t->u.kernel.target = target; - - ret = xt_check_target(target, AF_INET, t->u.target_size - sizeof(*t), - table, hook, 0, 0); - if (ret) { + par.table = table; + par.entryinfo = NULL; + par.target = target; + par.targinfo = t->data; + par.hook_mask = hook; + par.family = NFPROTO_IPV4; + + ret = xt_check_target(&par, t->u.target_size - sizeof(*t), 0, false); + if (ret < 0) { module_put(t->u.kernel.target->me); return ret; } - if (t->u.kernel.target->checkentry - && !t->u.kernel.target->checkentry(table, NULL, - t->u.kernel.target, t->data, - hook)) { - module_put(t->u.kernel.target->me); - ret = -EINVAL; - } - - return ret; + return 0; } static void ipt_destroy_target(struct ipt_entry_target *t) { - if (t->u.kernel.target->destroy) - t->u.kernel.target->destroy(t->u.kernel.target, t->data); - module_put(t->u.kernel.target->me); + struct xt_tgdtor_param par = { + .target = t->u.kernel.target, + .targinfo = t->data, + }; + if (par.target->destroy != NULL) + par.target->destroy(&par); + module_put(par.target->me); } static int tcf_ipt_release(struct tcf_ipt *ipt, int bind) @@ -196,6 +198,7 @@ static int tcf_ipt(struct sk_buff *skb, struct tc_action *a, { int ret = 0, result = 0; struct tcf_ipt *ipt = a->priv; + struct xt_target_param par; if (skb_cloned(skb)) { if (pskb_expand_head(skb, 0, 0, GFP_ATOMIC)) @@ -211,10 +214,13 @@ static int tcf_ipt(struct sk_buff *skb, struct tc_action *a, /* yes, we have to worry about both in and out dev worry later - danger - this API seems to have changed from earlier kernels */ - ret = ipt->tcfi_t->u.kernel.target->target(skb, skb->dev, NULL, - ipt->tcfi_hook, - ipt->tcfi_t->u.kernel.target, - ipt->tcfi_t->data); + par.in = skb->dev; + par.out = NULL; + par.hooknum = ipt->tcfi_hook; + par.target = ipt->tcfi_t->u.kernel.target; + par.targinfo = ipt->tcfi_t->data; + ret = par.target->target(skb, &par); + switch (ret) { case NF_ACCEPT: result = TC_ACT_OK; |