Gitweb: http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=467aea0ddfd1f0f1158c57cbef0e8941dd63374c Commit: 467aea0ddfd1f0f1158c57cbef0e8941dd63374c Parent: 6229e362dd49b9e8387126bd4483ab0574d23e9c Author: Stephen Hemminger <[EMAIL PROTECTED]> AuthorDate: Wed Mar 21 13:42:06 2007 -0700 Committer: David S. Miller <[EMAIL PROTECTED]> CommitDate: Wed Apr 25 22:28:45 2007 -0700
bridge: don't route packets while learning While in the STP learning state, don't route packets; wait until forwarding delay has expired. The purpose of the forwarding delay is to detect loops in the network, and if a brouter started up and started forwarding, it could cause a flood. Signed-off-by: Stephen Hemminger <[EMAIL PROTECTED]> --- net/bridge/br_input.c | 17 ++++++++++------- 1 files changed, 10 insertions(+), 7 deletions(-) diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c index 2f5c379..8a55276 100644 --- a/net/bridge/br_input.c +++ b/net/bridge/br_input.c @@ -129,7 +129,7 @@ struct sk_buff *br_handle_frame(struct net_bridge_port *p, struct sk_buff *skb) const unsigned char *dest = eth_hdr(skb)->h_dest; if (!is_valid_ether_addr(eth_hdr(skb)->h_source)) - goto err; + goto drop; if (unlikely(is_link_local(dest))) { skb->pkt_type = PACKET_HOST; @@ -138,22 +138,25 @@ struct sk_buff *br_handle_frame(struct net_bridge_port *p, struct sk_buff *skb) NULL, br_handle_local_finish) == 0) ? skb : NULL; } - if (p->state == BR_STATE_FORWARDING || p->state == BR_STATE_LEARNING) { + switch (p->state) { + case BR_STATE_FORWARDING: + if (br_should_route_hook) { if (br_should_route_hook(&skb)) return skb; dest = eth_hdr(skb)->h_dest; } - + /* fall through */ + case BR_STATE_LEARNING: if (!compare_ether_addr(p->br->dev->dev_addr, dest)) skb->pkt_type = PACKET_HOST; NF_HOOK(PF_BRIDGE, NF_BR_PRE_ROUTING, skb, skb->dev, NULL, br_handle_frame_finish); - return NULL; + break; + default: +drop: + kfree_skb(skb); } - -err: - kfree_skb(skb); return NULL; } - To unsubscribe from this list: send the line "unsubscribe git-commits-head" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html