netdev - Re: [PATCH net-next v11 0/3] netdevsim: link and forward skbs between ports

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Message-ID: <cf9e07d6-6693-4511-93a6-e375d6f0e738@davidwei.uk>
Date: Fri, 16 Feb 2024 12:13:42 -0700
From: David Wei <dw@...idwei.uk>
To: Paolo Abeni <pabeni@...hat.com>, Jakub Kicinski <kuba@...nel.org>,
 Jiri Pirko <jiri@...nulli.us>, Sabrina Dubroca <sd@...asysnail.net>,
 netdev@...r.kernel.org
Cc: "David S. Miller" <davem@...emloft.net>,
 Eric Dumazet <edumazet@...gle.com>
Subject: Re: [PATCH net-next v11 0/3] netdevsim: link and forward skbs between
 ports

On 2024-02-16 03:38, Paolo Abeni wrote:
> Hi,
> 
> On Thu, 2024-02-15 at 11:43 -0800, David Wei wrote:
>> This patchset adds the ability to link two netdevsim ports together and
>> forward skbs between them, similar to veth. The goal is to use netdevsim
>> for testing features e.g. zero copy Rx using io_uring.
>>
>> This feature was tested locally on QEMU, and a selftest is included.
> 
> this apparently causes rtnetlink.sh self-tests failures:
> 
> https://netdev.bots.linux.dev/flakes.html?tn-needle=rtnetlink-sh
> 
> example failure:
> 
> https://netdev-3.bots.linux.dev/vmksft-net/results/467721/18-rtnetlink-sh/stdout
> 
> the ipsec_offload test (using netdevsim) fails.

Thanks for catching this Paulo. Can I sort this out in a separate patch,
as the rtnetlink.sh test is disabled in CI right now?

> 
> @Jakub: it looks like the rtnetlink.sh test is currently ignored by
> patchwork, skimming over the recent failures they are roughly
> correlated to this series submission: the test looks otherwise
> reasonably stable to me.
> 
> Cheers,
> 
> Paolo
>