Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

[linux-2.6] / net / netfilter / xt_helper.c

diff --git a/net/netfilter/xt_helper.c b/net/netfilter/xt_helper.c
index 7d2d68b9155ff3e33f87a08fb8e89777b8a1267e..799c2a43e3b900285e4b52270e862f6428d86cd9 100644 (file)
--- a/net/netfilter/xt_helper.c
+++ b/net/netfilter/xt_helper.c
@@ -144,15 +144,31 @@ static int check(const char *tablename,
 {
        struct xt_helper_info *info = matchinfo;
 
+#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,
        .matchsize      = sizeof(struct xt_helper_info),
        .checkentry     = check,
+       .destroy        = destroy,
        .family         = AF_INET,
        .me             = THIS_MODULE,
 };
@@ -161,11 +177,12 @@ static struct xt_match helper6_match = {
        .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();
@@ -181,12 +198,12 @@ static int __init init(void)
        return ret;
 }
 
-static void __exit fini(void)
+static void __exit xt_helper_fini(void)
 {
        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);