Re: [Xen-devel] [PATCH 2/3] bridge: trigger a bridge calculation upon port changes

[Cong Wang <cwang@xxxxxxxxxxxxxxxx>]

On Fri, Mar 14, 2014 at 6:39 PM, Luis R. Rodriguez <mcgrof@xxxxxxxx> wrote:
> On Thu, Mar 13, 2014 at 11:26:25AM -0700, Cong Wang wrote:
>> On Wed, Mar 12, 2014 at 8:15 PM, Luis R. Rodriguez
>> <mcgrof@xxxxxxxxxxxxxxxx> wrote:
>> >                         spin_unlock_bh(&p->br->lock);
>> > +                       if (changed)
>> > +                               call_netdevice_notifiers(NETDEV_CHANGEADDR,
>> > +                                                        p->br->dev);
>> > +                       netdev_update_features(p->br->dev);
>>
>> I think this is supposed to be in netdev event handler of br->dev
>> instead of here.
>
> Do you mean netdev_update_features() ? I mimic'd what was being done on
> br_del_if() given that root blocking is doing something similar. If
> we need to change something for the above then I suppose it means we need
> to change br_del_if() too. Let me know if you see any reason for something
> else.
>

Yeah, for me it looks like it's better to call netdev_update_features()
in the event handler of br->dev, rather than where calling
call_netdevice_notifiers(..., br->dev);.

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