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author | Jan Engelhardt <jengelh@medozas.de> | 2009-06-12 18:56:14 +0200 |
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committer | Jan Engelhardt <jengelh@medozas.de> | 2009-08-10 13:09:44 +0200 |
commit | 9e05ec4b1804a1ba51f61fe169aef9b86edcd3f7 (patch) | |
tree | f8a356cfab524538d8de0da2f39d3b0b8e148b5b /net/netfilter/xt_conntrack.c | |
parent | 84899a2b9adaf6c2e20d198d7c24562ce6b391d8 (diff) | |
download | linux-9e05ec4b1804a1ba51f61fe169aef9b86edcd3f7.tar.bz2 |
netfilter: xtables: remove xt_conntrack v0
Superseded by xt_conntrack v1 (v2.6.24-2921-g64eb12f).
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Diffstat (limited to 'net/netfilter/xt_conntrack.c')
-rw-r--r-- | net/netfilter/xt_conntrack.c | 155 |
1 files changed, 1 insertions, 154 deletions
diff --git a/net/netfilter/xt_conntrack.c b/net/netfilter/xt_conntrack.c index fc581800698e..6dc4652f2fe8 100644 --- a/net/netfilter/xt_conntrack.c +++ b/net/netfilter/xt_conntrack.c @@ -19,101 +19,12 @@ MODULE_LICENSE("GPL"); MODULE_AUTHOR("Marc Boucher <marc@mbsi.ca>"); -MODULE_AUTHOR("Jan Engelhardt <jengelh@computergmbh.de>"); +MODULE_AUTHOR("Jan Engelhardt <jengelh@medozas.de>"); MODULE_DESCRIPTION("Xtables: connection tracking state match"); MODULE_ALIAS("ipt_conntrack"); MODULE_ALIAS("ip6t_conntrack"); static bool -conntrack_mt_v0(const struct sk_buff *skb, const struct xt_match_param *par) -{ - const struct xt_conntrack_info *sinfo = par->matchinfo; - const struct nf_conn *ct; - enum ip_conntrack_info ctinfo; - unsigned int statebit; - - ct = nf_ct_get(skb, &ctinfo); - -#define FWINV(bool, invflg) ((bool) ^ !!(sinfo->invflags & (invflg))) - - if (ct == &nf_conntrack_untracked) - statebit = XT_CONNTRACK_STATE_UNTRACKED; - else if (ct) - statebit = XT_CONNTRACK_STATE_BIT(ctinfo); - else - statebit = XT_CONNTRACK_STATE_INVALID; - - if (sinfo->flags & XT_CONNTRACK_STATE) { - if (ct) { - if (test_bit(IPS_SRC_NAT_BIT, &ct->status)) - statebit |= XT_CONNTRACK_STATE_SNAT; - if (test_bit(IPS_DST_NAT_BIT, &ct->status)) - statebit |= XT_CONNTRACK_STATE_DNAT; - } - if (FWINV((statebit & sinfo->statemask) == 0, - XT_CONNTRACK_STATE)) - return false; - } - - if (ct == NULL) { - if (sinfo->flags & ~XT_CONNTRACK_STATE) - return false; - return true; - } - - if (sinfo->flags & XT_CONNTRACK_PROTO && - FWINV(nf_ct_protonum(ct) != - sinfo->tuple[IP_CT_DIR_ORIGINAL].dst.protonum, - XT_CONNTRACK_PROTO)) - return false; - - if (sinfo->flags & XT_CONNTRACK_ORIGSRC && - FWINV((ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.u3.ip & - sinfo->sipmsk[IP_CT_DIR_ORIGINAL].s_addr) != - sinfo->tuple[IP_CT_DIR_ORIGINAL].src.ip, - XT_CONNTRACK_ORIGSRC)) - return false; - - if (sinfo->flags & XT_CONNTRACK_ORIGDST && - FWINV((ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.u3.ip & - sinfo->dipmsk[IP_CT_DIR_ORIGINAL].s_addr) != - sinfo->tuple[IP_CT_DIR_ORIGINAL].dst.ip, - XT_CONNTRACK_ORIGDST)) - return false; - - if (sinfo->flags & XT_CONNTRACK_REPLSRC && - FWINV((ct->tuplehash[IP_CT_DIR_REPLY].tuple.src.u3.ip & - sinfo->sipmsk[IP_CT_DIR_REPLY].s_addr) != - sinfo->tuple[IP_CT_DIR_REPLY].src.ip, - XT_CONNTRACK_REPLSRC)) - return false; - - if (sinfo->flags & XT_CONNTRACK_REPLDST && - FWINV((ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.u3.ip & - sinfo->dipmsk[IP_CT_DIR_REPLY].s_addr) != - sinfo->tuple[IP_CT_DIR_REPLY].dst.ip, - XT_CONNTRACK_REPLDST)) - return false; - - if (sinfo->flags & XT_CONNTRACK_STATUS && - FWINV((ct->status & sinfo->statusmask) == 0, - XT_CONNTRACK_STATUS)) - return false; - - if(sinfo->flags & XT_CONNTRACK_EXPIRES) { - unsigned long expires = timer_pending(&ct->timeout) ? - (ct->timeout.expires - jiffies)/HZ : 0; - - if (FWINV(!(expires >= sinfo->expires_min && - expires <= sinfo->expires_max), - XT_CONNTRACK_EXPIRES)) - return false; - } - return true; -#undef FWINV -} - -static bool conntrack_addrcmp(const union nf_inet_addr *kaddr, const union nf_inet_addr *uaddr, const union nf_inet_addr *umask, unsigned int l3proto) @@ -337,73 +248,9 @@ static void conntrack_mt_destroy_v1(const struct xt_mtdtor_param *par) conntrack_mt_destroy(par); } -#ifdef CONFIG_COMPAT -struct compat_xt_conntrack_info -{ - compat_uint_t statemask; - compat_uint_t statusmask; - struct ip_conntrack_old_tuple tuple[IP_CT_DIR_MAX]; - struct in_addr sipmsk[IP_CT_DIR_MAX]; - struct in_addr dipmsk[IP_CT_DIR_MAX]; - compat_ulong_t expires_min; - compat_ulong_t expires_max; - u_int8_t flags; - u_int8_t invflags; -}; - -static void conntrack_mt_compat_from_user_v0(void *dst, void *src) -{ - const struct compat_xt_conntrack_info *cm = src; - struct xt_conntrack_info m = { - .statemask = cm->statemask, - .statusmask = cm->statusmask, - .expires_min = cm->expires_min, - .expires_max = cm->expires_max, - .flags = cm->flags, - .invflags = cm->invflags, - }; - memcpy(m.tuple, cm->tuple, sizeof(m.tuple)); - memcpy(m.sipmsk, cm->sipmsk, sizeof(m.sipmsk)); - memcpy(m.dipmsk, cm->dipmsk, sizeof(m.dipmsk)); - memcpy(dst, &m, sizeof(m)); -} - -static int conntrack_mt_compat_to_user_v0(void __user *dst, void *src) -{ - const struct xt_conntrack_info *m = src; - struct compat_xt_conntrack_info cm = { - .statemask = m->statemask, - .statusmask = m->statusmask, - .expires_min = m->expires_min, - .expires_max = m->expires_max, - .flags = m->flags, - .invflags = m->invflags, - }; - memcpy(cm.tuple, m->tuple, sizeof(cm.tuple)); - memcpy(cm.sipmsk, m->sipmsk, sizeof(cm.sipmsk)); - memcpy(cm.dipmsk, m->dipmsk, sizeof(cm.dipmsk)); - return copy_to_user(dst, &cm, sizeof(cm)) ? -EFAULT : 0; -} -#endif - static struct xt_match conntrack_mt_reg[] __read_mostly = { { .name = "conntrack", - .revision = 0, - .family = NFPROTO_IPV4, - .match = conntrack_mt_v0, - .checkentry = conntrack_mt_check, - .destroy = conntrack_mt_destroy, - .matchsize = sizeof(struct xt_conntrack_info), - .me = THIS_MODULE, -#ifdef CONFIG_COMPAT - .compatsize = sizeof(struct compat_xt_conntrack_info), - .compat_from_user = conntrack_mt_compat_from_user_v0, - .compat_to_user = conntrack_mt_compat_to_user_v0, -#endif - }, - { - .name = "conntrack", .revision = 1, .family = NFPROTO_UNSPEC, .matchsize = sizeof(struct xt_conntrack_mtinfo1), |