netdev - Re: [PATCH net v2 4/4] selftests: drv-net: rss_ctx: test RSS contexts persist after ifdown/up

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Message-ID: <CALs4sv1SQNKhxJV34w26+VLL98kK4teu0RhXEqk8xM98Q=8N4w@mail.gmail.com>
Date: Wed, 11 Feb 2026 22:53:18 +0530
From: Pavan Chebbi <pavan.chebbi@...adcom.com>
To: Jakub Kicinski <kuba@...nel.org>
Cc: Bobby Eshleman <bobbyeshleman@...il.com>, Michael Chan <michael.chan@...adcom.com>, 
	"David S . Miller" <davem@...emloft.net>, Linux Netdev List <netdev@...r.kernel.org>, 
	Eric Dumazet <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>, 
	Andrew Lunn <andrew+netdev@...n.ch>, Andrew Gospodarek <andrew.gospodarek@...adcom.com>
Subject: Re: [PATCH net v2 4/4] selftests: drv-net: rss_ctx: test RSS contexts
 persist after ifdown/up

On Wed, Feb 11, 2026 at 10:28 PM Jakub Kicinski <kuba@...nel.org> wrote:
>
> On Wed, 11 Feb 2026 22:08:39 +0530 Pavan Chebbi wrote:
> > > > My experiments are pointing to 'self.cancel()' sometimes taking a lot
> > > > of time as part of the exec().
> > > > I don't know but I feel the new test code itself should be OK. I can
> > > > send a v3 and you can run it once too?
> > >
> > > Could you reply to this thread with what the version of the patch where
> > > you see defer() takes a long time? We use defer all over the place..
> >
> > Oh it is still in my sandbox. It's after I incorporate the comments I
> > received on the v2.
> > You should see it in v3. Let me ask Michael to send it.
>
> I'm asking for the version that doesn't work / causes trouble.

It's not in the list yet. v2, which is the latest version, does not
use exec/defer to bring the interface back up.

> Presumably that's not the version you want Michael to submit?

My submission is that the test code that will come in v3 is going to
be correct, except that sometimes I see a delay in getting the
interface back up, specifically when I use exec() or defer() for if
up. And I am being certain that the delay is not caused because of any
mistake I have made in the new tests..

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