#include <linux/module.h>
#include <linux/skbuff.h>
-#include <net/netfilter/nf_conntrack_compat.h>
+#include <net/netfilter/nf_conntrack.h>
#include <linux/netfilter/x_tables.h>
#include <linux/netfilter/xt_state.h>
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);
return (sinfo->statemask & statebit);
}
-static struct xt_match state_match = {
- .name = "state",
- .match = match,
- .matchsize = sizeof(struct xt_state_info),
- .family = AF_INET,
- .me = THIS_MODULE,
-};
-
-static struct xt_match state6_match = {
- .name = "state",
- .match = match,
- .matchsize = sizeof(struct xt_state_info),
- .family = AF_INET6,
- .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(&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(&state6_match);
- if (ret < 0)
- xt_unregister_match(&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(&state_match);
- xt_unregister_match(&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);