diff options
Diffstat (limited to 'net/netfilter/xt_conntrack.c')
-rw-r--r-- | net/netfilter/xt_conntrack.c | 33 |
1 files changed, 31 insertions, 2 deletions
diff --git a/net/netfilter/xt_conntrack.c b/net/netfilter/xt_conntrack.c index 39fc29496e00..65a84809fd30 100644 --- a/net/netfilter/xt_conntrack.c +++ b/net/netfilter/xt_conntrack.c @@ -203,10 +203,39 @@ match(const struct sk_buff *skb, #endif /* CONFIG_NF_IP_CONNTRACK */ +static int +checkentry(const char *tablename, + const void *ip, + const struct xt_match *match, + void *matchinfo, + unsigned int matchsize, + unsigned int hook_mask) +{ +#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE) + if (nf_ct_l3proto_try_module_get(match->family) < 0) { + printk(KERN_WARNING "can't load nf_conntrack support for " + "proto=%d\n", match->family); + return 0; + } +#endif + return 1; +} + +static void +destroy(const struct xt_match *match, void *matchinfo, unsigned int matchsize) +{ +#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE) + nf_ct_l3proto_module_put(match->family); +#endif +} + static struct xt_match conntrack_match = { .name = "conntrack", .match = match, + .checkentry = checkentry, + .destroy = destroy, .matchsize = sizeof(struct xt_conntrack_info), + .family = AF_INET, .me = THIS_MODULE, }; @@ -214,14 +243,14 @@ static int __init init(void) { int ret; need_conntrack(); - ret = xt_register_match(AF_INET, &conntrack_match); + ret = xt_register_match(&conntrack_match); return ret; } static void __exit fini(void) { - xt_unregister_match(AF_INET, &conntrack_match); + xt_unregister_match(&conntrack_match); } module_init(init); |