Merge branch 'for-linus/samsung-fixes' of git://git.fluff.org/bjdooks/linux

[cascardo/linux.git] / net / bridge / br_input.c

diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c
index be5ab8d..d74d570 100644 (file)
--- a/net/bridge/br_input.c
+++ b/net/bridge/br_input.c
@@ -41,6 +41,7 @@ int br_handle_frame_finish(struct sk_buff *skb)
        struct net_bridge_port *p = rcu_dereference(skb->dev->br_port);
        struct net_bridge *br;
        struct net_bridge_fdb_entry *dst;
+       struct net_bridge_mdb_entry *mdst;
        struct sk_buff *skb2;
 
        if (!p || p->state == BR_STATE_DISABLED)
@@ -50,6 +51,10 @@ int br_handle_frame_finish(struct sk_buff *skb)
        br = p->br;
        br_fdb_update(br, p, eth_hdr(skb)->h_source);
 
+       if (is_multicast_ether_addr(dest) &&
+           br_multicast_rcv(br, p, skb))
+               goto drop;
+
        if (p->state == BR_STATE_LEARNING)
                goto drop;
 
@@ -64,22 +69,30 @@ int br_handle_frame_finish(struct sk_buff *skb)
        dst = NULL;
 
        if (is_multicast_ether_addr(dest)) {
+               mdst = br_mdb_get(br, skb);
+               if (mdst || BR_INPUT_SKB_CB_MROUTERS_ONLY(skb)) {
+                       if ((mdst && !hlist_unhashed(&mdst->mglist)) ||
+                           br_multicast_is_router(br))
+                               skb2 = skb;
+                       br_multicast_forward(mdst, skb, skb2);
+                       skb = NULL;
+                       if (!skb2)
+                               goto out;
+               } else
+                       skb2 = skb;
+
                br->dev->stats.multicast++;
-               skb2 = skb;
        } else if ((dst = __br_fdb_get(br, dest)) && dst->is_local) {
                skb2 = skb;
                /* Do not forward the packet since it's local. */
                skb = NULL;
        }
 
-       if (skb2 == skb)
-               skb2 = skb_clone(skb, GFP_ATOMIC);
-
        if (skb) {
                if (dst)
-                       br_forward(dst->dst, skb);
+                       br_forward(dst->dst, skb, skb2);
                else
-                       br_flood_forward(br, skb);
+                       br_flood_forward(br, skb, skb2);
        }
 
        if (skb2)