From: Stephen Hemminger <shemminger@vyatta.com>
Date: Fri, 15 May 2009 06:11:58 +0000 (+0000)
Subject: bridge: fix initial packet flood if !STP
X-Git-Tag: v2.6.30-rc7~20^2~11
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4f0611af47e25807cf18cd2b4d4e94206c75b29e;p=pandora-kernel.git

bridge: fix initial packet flood if !STP

If bridge is configured with no STP and forwarding delay of 0 (which
is typical for virtualization) then when link starts it will flood all
packets for the first 20 seconds.

This bug was introduced by a combination of earlier changes:
  * forwarding database uses hold time of zero to indicate
    user wants to always flood packets
  * optimzation of the case of forwarding delay of 0 avoids the initial
    timer tick

The fix is to just skip all the topology change detection code if
kernel STP is not being used.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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