resubmit bridge: fix message_age_timer calculation
authorChris Healy <cphealy@gmail.com>
Thu, 12 Sep 2013 04:37:47 +0000 (21:37 -0700)
committerDavid S. Miller <davem@davemloft.net>
Fri, 13 Sep 2013 03:30:37 +0000 (23:30 -0400)
commit9a0620133ccce9dd35c00a96405c8d80938c2cc0
tree26e00eef83cbd19294da234f10be2864b60b91a9
parentf25672f1f9a4d3aef108d46123a13473954bd966
resubmit bridge: fix message_age_timer calculation

This changes the message_age_timer calculation to use the BPDU's max age as
opposed to the local bridge's max age.  This is in accordance with section
8.6.2.3.2 Step 2 of the 802.1D-1998 sprecification.

With the current implementation, when running with very large bridge
diameters, convergance will not always occur even if a root bridge is
configured to have a longer max age.

Tested successfully on bridge diameters of ~200.

Signed-off-by: Chris Healy <cphealy@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/bridge/br_stp.c