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authorStephen Hemminger <shemminger@linux-foundation.org>2007-04-25 22:05:55 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-04-25 22:30:01 -0700
commit2111f8b9e58fd04b87b8b07d66485f255a57b0bb (patch)
treeaaeb558abcc903e8d4960368e7a4650c4ef6f4e9 /net
parent83aa0938ff59e8ef6d0b99260063ebe84fc84a16 (diff)
downloadop-kernel-dev-2111f8b9e58fd04b87b8b07d66485f255a57b0bb.zip
op-kernel-dev-2111f8b9e58fd04b87b8b07d66485f255a57b0bb.tar.gz
[BRIDGE]: drop PAUSE frames
Pause frames should never make it out of the network device into the stack. But if a device was misconfigured, it might happen. So drop pause frames in bridge. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/bridge/br_input.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c
index 364e0ba..5662567 100644
--- a/net/bridge/br_input.c
+++ b/net/bridge/br_input.c
@@ -131,9 +131,14 @@ struct sk_buff *br_handle_frame(struct net_bridge_port *p, struct sk_buff *skb)
if (!is_valid_ether_addr(eth_hdr(skb)->h_source))
goto drop;
- if (unlikely(is_link_local(dest)))
+ if (unlikely(is_link_local(dest))) {
+ /* Pause frames shouldn't be passed up by driver anyway */
+ if (skb->protocol == htons(ETH_P_PAUSE))
+ goto drop;
+
return (NF_HOOK(PF_BRIDGE, NF_BR_LOCAL_IN, skb, skb->dev,
NULL, br_handle_local_finish) == 0) ? skb : NULL;
+ }
switch (p->state) {
case BR_STATE_FORWARDING:
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