xt_connlimit: netns support

@@ -99,7 +99,8 @@ same_source_net(const union nf_inet_addr *addr,
 	}
 }
 
-static int count_them(struct xt_connlimit_data *data,
+static int count_them(struct net *net,
+		      struct xt_connlimit_data *data,
 		      const struct nf_conntrack_tuple *tuple,
 		      const union nf_inet_addr *addr,
 		      const union nf_inet_addr *mask,

@@ -122,7 +123,7 @@ static int count_them(struct xt_connlimit_data *data,
 
 	/* check the saved connections */
 	list_for_each_entry_safe(conn, tmp, hash, list) {
-		found    = nf_conntrack_find_get(&init_net, &conn->tuple);
+		found    = nf_conntrack_find_get(net, &conn->tuple);
 		found_ct = NULL;
 
 		if (found != NULL)

@@ -180,6 +181,7 @@ static int count_them(struct xt_connlimit_data *data,
 static bool
 connlimit_mt(const struct sk_buff *skb, const struct xt_match_param *par)
 {
+	struct net *net = dev_net(par->in ? par->in : par->out);
 	const struct xt_connlimit_info *info = par->matchinfo;
 	union nf_inet_addr addr;
 	struct nf_conntrack_tuple tuple;

@@ -204,7 +206,7 @@ connlimit_mt(const struct sk_buff *skb, const struct xt_match_param *par)
 	}
 
 	spin_lock_bh(&info->data->lock);
-	connections = count_them(info->data, tuple_ptr, &addr,
+	connections = count_them(net, info->data, tuple_ptr, &addr,
 	                         &info->mask, par->family);
 	spin_unlock_bh(&info->data->lock);