| Date | Mon, 12 May 2014 02:32:40 +0200 | From | Willy Tarreau <> | Subject | [ 040/143] resubmit bridge: fix message_age_timer calculation |
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2.6.32-longterm review patch. If anyone has any objections, please let me know.
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From: Chris Healy <cphealy@gmail.com>
[ Upstream commit 9a0620133ccce9dd35c00a96405c8d80938c2cc0 ]
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> Signed-off-by: Willy Tarreau <w@1wt.eu> --- net/bridge/br_stp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/bridge/br_stp.c b/net/bridge/br_stp.c index c7d6bfc..a67e6ce 100644 --- a/net/bridge/br_stp.c +++ b/net/bridge/br_stp.c @@ -192,7 +192,7 @@ static inline 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 */ -- 1.7.12.2.21.g234cd45.dirty
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