bridge: allow zero ageing time

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[ Upstream commit 4c656c13b2 ]

This fixes a regression in the bridge ageing time caused by:
commit c62987bbd8 ("bridge: push bridge setting ageing_time down to switchdev")

There are users of Linux bridge which use the feature that if ageing time
is set to 0 it causes entries to never expire. See:
  https://www.linuxfoundation.org/collaborate/workgroups/networking/bridge

For a pure software bridge, it is unnecessary for the code to have
arbitrary restrictions on what values are allowable.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Stephen Hemminger 2016-03-08 12:59:35 -08:00 • committed by Greg Kroah-Hartman

parent c3d8f507e7

commit acbea202fb

2 changed files with 8 additions and 7 deletions

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4

include/linux/if_bridge.h

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11

net/bridge/br_stp.c

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