Commit 2111f8b9 authored by Stephen Hemminger's avatar Stephen Hemminger Committed by David S. Miller
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[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: default avatarStephen Hemminger <>
Signed-off-by: default avatarDavid S. Miller <>
parent 83aa0938
......@@ -61,6 +61,7 @@
#define ETH_P_8021Q 0x8100 /* 802.1Q VLAN Extended Header */
#define ETH_P_IPX 0x8137 /* IPX over DIX */
#define ETH_P_IPV6 0x86DD /* IPv6 over bluebook */
#define ETH_P_PAUSE 0x8808 /* IEEE Pause frames. See 802.3 31B */
#define ETH_P_SLOW 0x8809 /* Slow Protocol. See 802.3ad 43B */
#define ETH_P_WCCP 0x883E /* Web-cache coordination protocol
* defined in draft-wilson-wrec-wccp-v2-00.txt */
......@@ -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) {
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