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authorVlad Yasevich <vyasevic@redhat.com>2013-06-05 18:08:01 +0400
committerDavid S. Miller <davem@davemloft.net>2013-06-11 13:04:32 +0400
commit867a59436fc35593ae0e0efcd56cc6d2f8506586 (patch)
tree8b5aafe092cf6212894fc2f0176833be9b9e22ed /net/bridge/br_input.c
parent9ba18891f75535eca3ef53138b48970eb60f5255 (diff)
downloadlinux-867a59436fc35593ae0e0efcd56cc6d2f8506586.tar.xz
bridge: Add a flag to control unicast packet flood.
Add a flag to control flood of unicast traffic. By default, flood is on and the bridge will flood unicast traffic if it doesn't know the destination. When the flag is turned off, unicast traffic without an FDB will not be forwarded to the specified port. Signed-off-by: Vlad Yasevich <vyasevic@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge/br_input.c')
-rw-r--r--net/bridge/br_input.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c
index 7e993667d4bf..1b8b8b824cd7 100644
--- a/net/bridge/br_input.c
+++ b/net/bridge/br_input.c
@@ -65,6 +65,7 @@ int br_handle_frame_finish(struct sk_buff *skb)
struct net_bridge_fdb_entry *dst;
struct net_bridge_mdb_entry *mdst;
struct sk_buff *skb2;
+ bool unicast = true;
u16 vid = 0;
if (!p || p->state == BR_STATE_DISABLED)
@@ -95,9 +96,10 @@ int br_handle_frame_finish(struct sk_buff *skb)
dst = NULL;
- if (is_broadcast_ether_addr(dest))
+ if (is_broadcast_ether_addr(dest)) {
skb2 = skb;
- else if (is_multicast_ether_addr(dest)) {
+ unicast = false;
+ } else if (is_multicast_ether_addr(dest)) {
mdst = br_mdb_get(br, skb, vid);
if (mdst || BR_INPUT_SKB_CB_MROUTERS_ONLY(skb)) {
if ((mdst && mdst->mglist) ||
@@ -110,6 +112,7 @@ int br_handle_frame_finish(struct sk_buff *skb)
} else
skb2 = skb;
+ unicast = false;
br->dev->stats.multicast++;
} else if ((dst = __br_fdb_get(br, dest, vid)) &&
dst->is_local) {
@@ -123,7 +126,7 @@ int br_handle_frame_finish(struct sk_buff *skb)
dst->used = jiffies;
br_forward(dst->dst, skb, skb2);
} else
- br_flood_forward(br, skb, skb2);
+ br_flood_forward(br, skb, skb2, unicast);
}
if (skb2)