From: Chris Healy Date: Thu, 12 Sep 2013 04:37:47 +0000 (-0700) Subject: resubmit bridge: fix message_age_timer calculation X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=9a0620133ccce9dd35c00a96405c8d80938c2cc0;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git 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 Signed-off-by: David S. Miller --- diff --git a/net/bridge/br_stp.c b/net/bridge/br_stp.c index 1c0a50f13229..f1887ba7fc43 100644 --- a/net/bridge/br_stp.c +++ b/net/bridge/br_stp.c @@ -209,7 +209,7 @@ static void br_record_config_information(struct net_bridge_port *p, p->designated_age = jiffies - bpdu->message_age; mod_timer(&p->message_age_timer, jiffies - + (p->br->max_age - bpdu->message_age)); + + (bpdu->max_age - bpdu->message_age)); } /* called under bridge lock */