linux-kernel - Re: [PATCH net-next RFC] selftests: net: add netpoll basic functionality test

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Message-ID: <20250621065121.78701641@kernel.org>
Date: Sat, 21 Jun 2025 06:51:21 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Breno Leitao <leitao@...ian.org>
Cc: Willem de Bruijn <willemdebruijn.kernel@...il.com>, Andrew Lunn
 <andrew+netdev@...n.ch>, "David S. Miller" <davem@...emloft.net>, Eric
 Dumazet <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>, Shuah Khan
 <shuah@...nel.org>, linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
 linux-kselftest@...r.kernel.org, ast@...nel.org
Subject: Re: [PATCH net-next RFC] selftests: net: add netpoll basic
 functionality test

On Fri, 20 Jun 2025 01:39:43 -0700 Breno Leitao wrote:
> > FWIW you can steal bpftrace integration from this series:
> > https://lore.kernel.org/all/20250421222827.283737-22-kuba@kernel.org/  
> 
> Yes, that would be great. I think we can iterate until we hit the poll
> path, otherwise we skip the test at timeout. Something as:
> 
> 	while (true):
> 		send msg
> 		if netpoll_poll_dev() was invoked:
> 			ksft_exit
> 		
> 		if timeout:
> 			raise KsftSkipEx
> 	
> As soon as your code lands, I will adapt the test to do so. Meanwhile,
> I will send the v1 for the netpoll, and later we can iterate.
> 
> Thanks for working on this bfptrace helper. This will be useful on other
> usecases as well.

Right, you're the second person I pointed that patch out to. Would be
great if someone could steal that patch and make it a part of their
series so that it gets merged :S But it's alright if you prefer to stick
to non-bpftrace testing for now..