netdev - Re: [PATCH net-next 0/6] selftests: net: page

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Date: Sat, 27 Apr 2024 09:55:54 -0400
From: Willem de Bruijn <willemdebruijn.kernel@...il.com>
To: Jakub Kicinski <kuba@...nel.org>, 
 davem@...emloft.net
Cc: netdev@...r.kernel.org, 
 edumazet@...gle.com, 
 pabeni@...hat.com, 
 linux-kselftest@...r.kernel.org, 
 willemdebruijn.kernel@...il.com, 
 Jakub Kicinski <kuba@...nel.org>
Subject: Re: [PATCH net-next 0/6] selftests: net: page_poll allocation error
 injection

Jakub Kicinski wrote:
> Add a test for exercising driver memory allocation failure paths.
> page pool is a bit tricky to inject errors into at the page allocator
> level because of the bulk alloc and recycling, so add explicit error
> injection support "in front" of the caches.
> 
> Add a test to exercise that using only the standard APIs.
> This is the first useful test for the new tests with an endpoint.
> There's no point testing netdevsim here, so this is also the first
> HW-only test in Python.
> 
> I'm not super happy with the traffic generation using iperf3,
> my initial approach was to use mausezahn. But it turned out to be
> 5x slower in terms of PPS. Hopefully this is good enough for now.
> 
> Jakub Kicinski (6):
>   net: page_pool: support error injection
>   selftests: drv-net-hw: support using Python from net hw tests
>   selftests: net: py: extract tool logic
>   selftests: net: py: avoid all ports < 10k
>   selftests: drv-net: support generating iperf3 load
>   selftests: drv-net-hw: add test for memory allocation failures with
>     page pool

Reviewed-by: Willem de Bruijn <willemb@...gle.com>