netdev - Re: [PATCH net-next v11 2/5] netvsc: refactor notifier/event handling code to use the failover framework

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Message-ID: <39081bce-3913-5b07-3d07-0c476fca5e78@intel.com>
Date:   Tue, 22 May 2018 08:28:42 -0700
From:   "Samudrala, Sridhar" <sridhar.samudrala@...el.com>
To:     Jiri Pirko <jiri@...nulli.us>
Cc:     mst@...hat.com, stephen@...workplumber.org, davem@...emloft.net,
        netdev@...r.kernel.org, virtualization@...ts.linux-foundation.org,
        virtio-dev@...ts.oasis-open.org, jesse.brandeburg@...el.com,
        alexander.h.duyck@...el.com, kubakici@...pl, jasowang@...hat.com,
        loseweigh@...il.com, aaron.f.brown@...el.com,
        anjali.singhai@...el.com
Subject: Re: [PATCH net-next v11 2/5] netvsc: refactor notifier/event handling
 code to use the failover framework


On 5/22/2018 2:08 AM, Jiri Pirko wrote:
> Tue, May 22, 2018 at 11:06:37AM CEST, jiri@...nulli.us wrote:
>> Tue, May 22, 2018 at 04:06:18AM CEST, sridhar.samudrala@...el.com wrote:
>>> Use the registration/notification framework supported by the generic
>>> failover infrastructure.
>>>
>>> Signed-off-by: Sridhar Samudrala <sridhar.samudrala@...el.com>
>> In previous patchset versions, the common code did
>> netdev_rx_handler_register() and netdev_upper_dev_link() etc
>> (netvsc_vf_join()). Now, this is still done in netvsc. Why?
>>
>> This should be part of the common "failover" code.

Based on Stephen's feedback on earlier patches, i tried to minimize the changes to
netvsc and only commonize the notifier and the main event handler routine.
Another complication is that netvsc does part of registration in a delayed workqueue.

It should be possible to move some of the code from net_failover.c to generic
failover.c in future if Stephen is ok with it.


>>
> Also note that in the current patchset you use IFF_FAILOVER flag for
> master, yet for the slave you use IFF_SLAVE. That is wrong.
> IFF_FAILOVER_SLAVE should be used.

Not sure which code you are referring to.  I only set IFF_FAILOVER_SLAVE
in patch 3.