diff options
| author | Herbert Xu <herbert@gondor.apana.org.au> | 2011-07-05 13:58:33 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-07-05 18:39:39 -0700 |
| commit | 44661462ee1ee3c922754fc1f246867f0d01e7ea (patch) | |
| tree | e0a040be7f73d3929d45e975ca0eef7025f8f93f /net/bridge/br_input.c | |
| parent | 9b9cfe7cf663c16c0d93349cc0094bb28ae7135a (diff) | |
| download | linux-44661462ee1ee3c922754fc1f246867f0d01e7ea.tar.gz linux-44661462ee1ee3c922754fc1f246867f0d01e7ea.tar.bz2 linux-44661462ee1ee3c922754fc1f246867f0d01e7ea.zip | |
bridge: Always flood broadcast packets
As is_multicast_ether_addr returns true on broadcast packets as
well, we need to explicitly exclude broadcast packets so that
they're always flooded. This wasn't an issue before as broadcast
packets were considered to be an unregistered multicast group,
which were always flooded. However, as we now only flood such
packets to router ports, this is no longer acceptable.
Reported-by: Michael Guntsche <mike@it-loops.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge/br_input.c')
| -rw-r--r-- | net/bridge/br_input.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c index f3ac1e858ee1..f06ee39c73fd 100644 --- a/net/bridge/br_input.c +++ b/net/bridge/br_input.c @@ -60,7 +60,7 @@ 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) && + if (!is_broadcast_ether_addr(dest) && is_multicast_ether_addr(dest) && br_multicast_rcv(br, p, skb)) goto drop; @@ -77,7 +77,9 @@ int br_handle_frame_finish(struct sk_buff *skb) dst = NULL; - if (is_multicast_ether_addr(dest)) { + if (is_broadcast_ether_addr(dest)) + skb2 = skb; + else if (is_multicast_ether_addr(dest)) { mdst = br_mdb_get(br, skb); if (mdst || BR_INPUT_SKB_CB_MROUTERS_ONLY(skb)) { if ((mdst && mdst->mglist) || |