netdev - Re: [PATCH net-next] udp: allow changing mapping of a socket to queue

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Message-ID: <20210628113845.28bdc035@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com>
Date:   Mon, 28 Jun 2021 11:38:45 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Tonghao Zhang <xiangxia.m.yue@...il.com>
Cc:     netdev@...r.kernel.org
Subject: Re: [PATCH net-next] udp: allow changing mapping of a socket to
 queue

On Sun, 27 Jun 2021 15:57:40 +0800 Tonghao Zhang wrote:
> There are many containers running on host. These containers
> share the host resources(e.g. netdev rx/tx queue). For isolating
> tx/rx queue, when the process migrated to other cpu, we hope
> this process will use tx/rx queue mapped to this cpu.

What's the impact? UDP packets would never get out of order within the
source system and now they will? Could you explain why that's safe?