Re: [PATCH v2] net/bonding: failover of LACP with mode 4 takes long time

[Ferruh Yigit <ferruh.yigit@amd.com>]

On 6/6/2022 3:34 PM, Gaoxiang Liu wrote:
> When the primary port of bond slaves with bond mode 4 linked down,
> the system id of the other slave ports channged.
> It may cause some switches to renegotiate,
> and the process takes a few seconds. It is not acceptable for any
> Telcos.
> We need sub-second switchover time like in linux.
> 
> Set the mac of the bond port to the slave port's system to solve the
> problem.
> 
> Bugzilla ID: 551
> Fixes: 46fb43683679 ("bond: add mode 4")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Gaoxiang Liu <liugaoxiang@huawei.com>
> 
>

This is another old patch, as far as I can see from bugzilla, the patch
the issue is reported by Kiran and proposed by Nandu, and shared in mail
list by Gaoxiang.

As it is addressing two bugzilla items, and we are at the beginning of
the release cycle, I am willing to take risk and apply this patch
without ack from a bonding maintainer.
If we found some issues we can revert this back.

Chas, Connor, if you have any objection, or if you need time for review
please let me know, otherwise I will merge the patch soon.

And if anyone can provide test, like Kiran who reported the issue, or
any other stakeholder, it helps a lot to give confidence to the fix.


Thanks,
ferruh