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,
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,
static int check(const char *tablename,
const void *inf,
+ const struct xt_match *match,
void *matchinfo,
unsigned int matchsize,
unsigned int hook_mask)
{
struct xt_helper_info *info = matchinfo;
- info->name[29] = '\0';
-
- /* verify size */
- if (matchsize != XT_ALIGN(sizeof(struct xt_helper_info)))
+#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
+ info->name[29] = '\0';
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 helper_match = {
.name = "helper",
- .match = &match,
- .checkentry = &check,
+ .match = match,
+ .matchsize = sizeof(struct xt_helper_info),
+ .checkentry = check,
+ .destroy = destroy,
+ .family = AF_INET,
.me = THIS_MODULE,
};
static struct xt_match helper6_match = {
.name = "helper",
- .match = &match,
- .checkentry = &check,
+ .match = match,
+ .matchsize = sizeof(struct xt_helper_info),
+ .checkentry = check,
+ .destroy = destroy,
+ .family = AF_INET6,
.me = THIS_MODULE,
};
-static int __init init(void)
+static int __init xt_helper_init(void)
{
int ret;
need_conntrack();
- ret = xt_register_match(AF_INET, &helper_match);
+ ret = xt_register_match(&helper_match);
if (ret < 0)
return ret;
- ret = xt_register_match(AF_INET6, &helper6_match);
+ ret = xt_register_match(&helper6_match);
if (ret < 0)
- xt_unregister_match(AF_INET, &helper_match);
+ xt_unregister_match(&helper_match);
return ret;
}
-static void __exit fini(void)
+static void __exit xt_helper_fini(void)
{
- xt_unregister_match(AF_INET, &helper_match);
- xt_unregister_match(AF_INET6, &helper6_match);
+ xt_unregister_match(&helper_match);
+ xt_unregister_match(&helper6_match);
}
-module_init(init);
-module_exit(fini);
+module_init(xt_helper_init);
+module_exit(xt_helper_fini);