netdev - Re: [PATCH v2 bpf-next 1/3] xsk: avoid overwriting skb fields for multi-buffer traffic

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Message-ID: <aNWJ37JhjDf8ExwY@mini-arch>
Date: Thu, 25 Sep 2025 11:28:47 -0700
From: Stanislav Fomichev <stfomichev@...il.com>
To: Maciej Fijalkowski <maciej.fijalkowski@...el.com>
Cc: bpf@...r.kernel.org, ast@...nel.org, daniel@...earbox.net,
	andrii@...nel.org, netdev@...r.kernel.org,
	magnus.karlsson@...el.com, kerneljasonxing@...il.com
Subject: Re: [PATCH v2 bpf-next 1/3] xsk: avoid overwriting skb fields for
 multi-buffer traffic

On 09/25, Maciej Fijalkowski wrote:
> We are unnecessarily setting a bunch of skb fields per each processed
> descriptor, which is redundant for fragmented frames.
> 
> Let us set these respective members for first fragment only. To address
> both paths that we have within xsk_build_skb(), move assignments onto
> xsk_set_destructor_arg() and rename it to xsk_skb_init_misc().
> 
> Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@...el.com>

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