On Sun, Jun 14, 2015 at 3:14 PM, Rami Rosen <[email protected]> wrote:
> Hi,
>
> You mention bridge doing ageing vs. device doing
> ageing. AFAIK, there is no way to prevent a bridge from doing aging by
> a sysfs entry. Do you think that preventing bridge aging via sysfs is
> needed?
The topic has been discussed before, but not at the patch level, yet,
AFIAK. I had this XXX comment in
Documentation/networking/switchdev.txt:
XXX: how to turn off ageing in kernel on a per-port basis or
otherwise prevent the kernel from ageing out the FDB entry?
I think the preference would be to use netlink over sysfs. If we made
this a per-port flag, we could add bool IFLA_BRPORT_AGEING flag (and
BR_AGEING) for IFLA_PROTINFO.
There is also the need to push the bridge's ageing timeout value down
to the device. This could be done with switchdev attr, e.g.
SWITCHDEV_ATTR_AGEING_TIMEOUT. (Maybe there is already netlink
plumbing to do this...need to check).
Are you going to work on it? ;)
-scott
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