diff options
Diffstat (limited to 'include/net/ip_fib.h')
| -rw-r--r-- | include/net/ip_fib.h | 89 |
1 files changed, 71 insertions, 18 deletions
diff --git a/include/net/ip_fib.h b/include/net/ip_fib.h index 10422ef14e28..926142ed8d7a 100644 --- a/include/net/ip_fib.h +++ b/include/net/ip_fib.h @@ -18,7 +18,10 @@ #include <net/flow.h> #include <linux/seq_file.h> +#include <linux/rcupdate.h> #include <net/fib_rules.h> +#include <net/inetpeer.h> +#include <linux/percpu.h> struct fib_config { u8 fc_dst_len; @@ -44,12 +47,30 @@ struct fib_config { }; struct fib_info; +struct rtable; + +struct fib_nh_exception { + struct fib_nh_exception __rcu *fnhe_next; + __be32 fnhe_daddr; + u32 fnhe_pmtu; + __be32 fnhe_gw; + unsigned long fnhe_expires; + struct rtable __rcu *fnhe_rth; + unsigned long fnhe_stamp; +}; + +struct fnhe_hash_bucket { + struct fib_nh_exception __rcu *chain; +}; + +#define FNHE_HASH_SIZE 2048 +#define FNHE_RECLAIM_DEPTH 5 struct fib_nh { struct net_device *nh_dev; struct hlist_node nh_hash; struct fib_info *nh_parent; - unsigned nh_flags; + unsigned int nh_flags; unsigned char nh_scope; #ifdef CONFIG_IP_ROUTE_MULTIPATH int nh_weight; @@ -62,6 +83,9 @@ struct fib_nh { __be32 nh_gw; __be32 nh_saddr; int nh_saddr_genid; + struct rtable __rcu * __percpu *nh_pcpu_rth_output; + struct rtable __rcu *nh_rth_input; + struct fnhe_hash_bucket *nh_exceptions; }; /* @@ -74,7 +98,7 @@ struct fib_info { struct net *fib_net; int fib_treeref; atomic_t fib_clntref; - unsigned fib_flags; + unsigned int fib_flags; unsigned char fib_dead; unsigned char fib_protocol; unsigned char fib_scope; @@ -105,12 +129,10 @@ struct fib_result { unsigned char nh_sel; unsigned char type; unsigned char scope; + u32 tclassid; struct fib_info *fi; struct fib_table *table; struct list_head *fa_head; -#ifdef CONFIG_IP_MULTIPLE_TABLES - struct fib_rule *r; -#endif }; struct fib_result_nl { @@ -157,11 +179,11 @@ extern __be32 fib_info_update_nh_saddr(struct net *net, struct fib_nh *nh); FIB_RES_SADDR(net, res)) struct fib_table { - struct hlist_node tb_hlist; - u32 tb_id; - int tb_default; - int tb_num_default; - unsigned long tb_data[0]; + struct hlist_node tb_hlist; + u32 tb_id; + int tb_default; + int tb_num_default; + unsigned long tb_data[0]; }; extern int fib_table_lookup(struct fib_table *tb, const struct flowi4 *flp, @@ -214,24 +236,55 @@ static inline int fib_lookup(struct net *net, const struct flowi4 *flp, extern int __net_init fib4_rules_init(struct net *net); extern void __net_exit fib4_rules_exit(struct net *net); -#ifdef CONFIG_IP_ROUTE_CLASSID -extern u32 fib_rules_tclass(const struct fib_result *res); -#endif - -extern int fib_lookup(struct net *n, struct flowi4 *flp, struct fib_result *res); - extern struct fib_table *fib_new_table(struct net *net, u32 id); extern struct fib_table *fib_get_table(struct net *net, u32 id); +extern int __fib_lookup(struct net *net, struct flowi4 *flp, + struct fib_result *res); + +static inline int fib_lookup(struct net *net, struct flowi4 *flp, + struct fib_result *res) +{ + if (!net->ipv4.fib_has_custom_rules) { + res->tclassid = 0; + if (net->ipv4.fib_local && + !fib_table_lookup(net->ipv4.fib_local, flp, res, + FIB_LOOKUP_NOREF)) + return 0; + if (net->ipv4.fib_main && + !fib_table_lookup(net->ipv4.fib_main, flp, res, + FIB_LOOKUP_NOREF)) + return 0; + if (net->ipv4.fib_default && + !fib_table_lookup(net->ipv4.fib_default, flp, res, + FIB_LOOKUP_NOREF)) + return 0; + return -ENETUNREACH; + } + return __fib_lookup(net, flp, res); +} + #endif /* CONFIG_IP_MULTIPLE_TABLES */ /* Exported by fib_frontend.c */ extern const struct nla_policy rtm_ipv4_policy[]; extern void ip_fib_init(void); +extern __be32 fib_compute_spec_dst(struct sk_buff *skb); extern int fib_validate_source(struct sk_buff *skb, __be32 src, __be32 dst, u8 tos, int oif, struct net_device *dev, - __be32 *spec_dst, u32 *itag); + struct in_device *idev, u32 *itag); extern void fib_select_default(struct fib_result *res); +#ifdef CONFIG_IP_ROUTE_CLASSID +static inline int fib_num_tclassid_users(struct net *net) +{ + return net->ipv4.fib_num_tclassid_users; +} +#else +static inline int fib_num_tclassid_users(struct net *net) +{ + return 0; +} +#endif /* Exported by fib_semantics.c */ extern int ip_fib_check_default(__be32 gw, struct net_device *dev); @@ -253,7 +306,7 @@ static inline void fib_combine_itag(u32 *itag, const struct fib_result *res) #endif *itag = FIB_RES_NH(*res).nh_tclassid<<16; #ifdef CONFIG_IP_MULTIPLE_TABLES - rtag = fib_rules_tclass(res); + rtag = res->tclassid; if (*itag == 0) *itag = (rtag<<16); *itag |= (rtag>>16); |