bridge: add flags to distinguish permanent mdb entires

[deliverable/linux.git] / net / bridge / br_multicast.c

diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index 1093c89095d8526278b1b8335f8fb0fc0f56e23b..dce9defae3c68aa706dcf7111497481b5204d57f 100644 (file)
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -279,7 +279,7 @@ static void br_multicast_port_group_expired(unsigned long data)
 
        spin_lock(&br->multicast_lock);
        if (!netif_running(br->dev) || timer_pending(&pg->timer) ||
-           hlist_unhashed(&pg->mglist))
+           hlist_unhashed(&pg->mglist) || pg->state & MDB_PERMANENT)
                goto out;
 
        br_multicast_del_pg(br, pg);
@@ -622,7 +622,8 @@ out:
 struct net_bridge_port_group *br_multicast_new_port_group(
                        struct net_bridge_port *port,
                        struct br_ip *group,
-                       struct net_bridge_port_group __rcu *next)
+                       struct net_bridge_port_group __rcu *next,
+                       unsigned char state)
 {
        struct net_bridge_port_group *p;
 
@@ -632,6 +633,7 @@ struct net_bridge_port_group *br_multicast_new_port_group(
 
        p->addr = *group;
        p->port = port;
+       p->state = state;
        rcu_assign_pointer(p->next, next);
        hlist_add_head(&p->mglist, &port->mglist);
        setup_timer(&p->timer, br_multicast_port_group_expired,
@@ -674,7 +676,7 @@ static int br_multicast_add_group(struct net_bridge *br,
                        break;
        }
 
-       p = br_multicast_new_port_group(port, group, *pp);
+       p = br_multicast_new_port_group(port, group, *pp, MDB_TEMPORARY);
        if (unlikely(!p))
                goto err;
        rcu_assign_pointer(*pp, p);
@@ -1165,7 +1167,6 @@ static int br_ip6_multicast_query(struct net_bridge *br,
                if (max_delay)
                        group = &mld->mld_mca;
        } else if (skb->len >= sizeof(*mld2q)) {
-               u16 mrc;
                if (!pskb_may_pull(skb, sizeof(*mld2q))) {
                        err = -EINVAL;
                        goto out;
@@ -1173,8 +1174,7 @@ static int br_ip6_multicast_query(struct net_bridge *br,
                mld2q = (struct mld2_query *)icmp6_hdr(skb);
                if (!mld2q->mld2q_nsrcs)
                        group = &mld2q->mld2q_mca;
-               mrc = ntohs(mld2q->mld2q_mrc);
-               max_delay = mrc ? MLDV2_MRC(mrc) : 1;
+               max_delay = mld2q->mld2q_mrc ? MLDV2_MRC(ntohs(mld2q->mld2q_mrc)) : 1;
        }
 
        if (!group)