netdev - Re: [PATCH net-next v6 2/2] selftests/bpf: add a new test to check the consumer update case

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Message-ID: <aGalpZSYcTMov4X0@mini-arch>
Date: Thu, 3 Jul 2025 08:45:41 -0700
From: Stanislav Fomichev <stfomichev@...il.com>
To: Jason Xing <kerneljasonxing@...il.com>
Cc: davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
	pabeni@...hat.com, bjorn@...nel.org, magnus.karlsson@...el.com,
	maciej.fijalkowski@...el.com, jonathan.lemon@...il.com,
	sdf@...ichev.me, ast@...nel.org, daniel@...earbox.net,
	hawk@...nel.org, john.fastabend@...il.com, joe@...a.to,
	willemdebruijn.kernel@...il.com, bpf@...r.kernel.org,
	netdev@...r.kernel.org, Jason Xing <kernelxing@...cent.com>
Subject: Re: [PATCH net-next v6 2/2] selftests/bpf: add a new test to check
 the consumer update case

On 07/03, Jason Xing wrote:
> From: Jason Xing <kernelxing@...cent.com>
> 
> The subtest sends 33 packets at one time on purpose to see if xsk
> exitting __xsk_generic_xmit() updates the global consumer of tx queue
> when reaching the max loop (max_tx_budget, 32 by default). The number 33
> can avoid xskq_cons_peek_desc() updates the consumer when it's about to
> quit sending, to accurately check if the issue that the first patch
> resolves remains. The new case will not check this issue in zero copy
> mode.
> 
> Signed-off-by: Jason Xing <kernelxing@...cent.com>
> ---
> v6
> Link: https://lore.kernel.org/all/20250702112815.50746-1-kerneljasonxing@gmail.com/
> 1. filter out and skip TEST_MODE_ZC test.

Acked-by: Stanislav Fomichev <sdf@...ichev.me>