X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=net%2Fnetfilter%2Fxt_state.c;h=4c946cbd731f7cfe47b9333b13c7e861906f9298;hb=6be3d8598e883fb632edf059ba2f8d1b9f4da138;hp=b8ec00cd51fc1d16b4c04c17dbbbed0e5b57af0b;hpb=c49867347404c46f137a261643ed4fce4376f324;p=safe%2Fjmp%2Flinux-2.6 diff --git a/net/netfilter/xt_state.c b/net/netfilter/xt_state.c index b8ec00c..4c946cb 100644 --- a/net/netfilter/xt_state.c +++ b/net/netfilter/xt_state.c @@ -10,7 +10,7 @@ #include #include -#include +#include #include #include @@ -20,23 +20,16 @@ MODULE_DESCRIPTION("ip[6]_tables connection tracking state match module"); MODULE_ALIAS("ipt_state"); MODULE_ALIAS("ip6t_state"); -static int -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, - int *hotdrop) +static bool +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; if (nf_ct_is_untracked(skb)) statebit = XT_STATE_UNTRACKED; - else if (!nf_ct_get_ctinfo(skb, &ctinfo)) + else if (!nf_ct_get(skb, &ctinfo)) statebit = XT_STATE_INVALID; else statebit = XT_STATE_BIT(ctinfo); @@ -44,42 +37,51 @@ match(const struct sk_buff *skb, return (sinfo->statemask & statebit); } -static struct xt_match state_match = { - .name = "state", - .match = match, - .matchsize = sizeof(struct xt_state_info), - .me = THIS_MODULE, -}; - -static struct xt_match state6_match = { - .name = "state", - .match = match, - .matchsize = sizeof(struct xt_state_info), - .me = THIS_MODULE, -}; - -static int __init init(void) +static bool state_mt_check(const struct xt_mtchk_param *par) { - int ret; - - need_conntrack(); + if (nf_ct_l3proto_try_module_get(par->match->family) < 0) { + printk(KERN_WARNING "can't load conntrack support for " + "proto=%u\n", par->match->family); + return false; + } + return true; +} - ret = xt_register_match(AF_INET, &state_match); - if (ret < 0) - return ret; +static void state_mt_destroy(const struct xt_mtdtor_param *par) +{ + nf_ct_l3proto_module_put(par->match->family); +} - ret = xt_register_match(AF_INET6, &state6_match); - if (ret < 0) - xt_unregister_match(AF_INET,&state_match); +static struct xt_match state_mt_reg[] __read_mostly = { + { + .name = "state", + .family = NFPROTO_IPV4, + .checkentry = state_mt_check, + .match = state_mt, + .destroy = state_mt_destroy, + .matchsize = sizeof(struct xt_state_info), + .me = THIS_MODULE, + }, + { + .name = "state", + .family = NFPROTO_IPV6, + .checkentry = state_mt_check, + .match = state_mt, + .destroy = state_mt_destroy, + .matchsize = sizeof(struct xt_state_info), + .me = THIS_MODULE, + }, +}; - return ret; +static int __init state_mt_init(void) +{ + return xt_register_matches(state_mt_reg, ARRAY_SIZE(state_mt_reg)); } -static void __exit fini(void) +static void __exit state_mt_exit(void) { - xt_unregister_match(AF_INET, &state_match); - xt_unregister_match(AF_INET6, &state6_match); + xt_unregister_matches(state_mt_reg, ARRAY_SIZE(state_mt_reg)); } -module_init(init); -module_exit(fini); +module_init(state_mt_init); +module_exit(state_mt_exit);