netdev - Re: [PATCH net-next v7 07/16] xsk: Extend xsk_rcv

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Message-ID: <25e26e82-f7d1-421e-b7af-766d99654fcf@blackwall.org>
Date: Mon, 19 Jan 2026 16:21:40 +0200
From: Nikolay Aleksandrov <razor@...ckwall.org>
To: Daniel Borkmann <daniel@...earbox.net>, netdev@...r.kernel.org
Cc: bpf@...r.kernel.org, kuba@...nel.org, davem@...emloft.net,
 pabeni@...hat.com, willemb@...gle.com, sdf@...ichev.me,
 john.fastabend@...il.com, martin.lau@...nel.org, jordan@...fe.io,
 maciej.fijalkowski@...el.com, magnus.karlsson@...el.com, dw@...idwei.uk,
 toke@...hat.com, yangzhenze@...edance.com, wangdongdong.6@...edance.com
Subject: Re: [PATCH net-next v7 07/16] xsk: Extend xsk_rcv_check validation

On 15/01/2026 10:25, Daniel Borkmann wrote:
> xsk_rcv_check tests for inbound packets to see whether they match
> the bound AF_XDP socket. Refactor the test into a small helper
> xsk_dev_queue_valid and move the validation against xs->dev and
> xs->queue_id there.
> 
> The fast-path case stays in place and allows for quick return in
> xsk_dev_queue_valid. If it fails, the validation is extended to
> check whether the AF_XDP socket is bound against a leased queue,
> and if the case then the test is redone.
> 
> Signed-off-by: Daniel Borkmann <daniel@...earbox.net>
> Co-developed-by: David Wei <dw@...idwei.uk>
> Signed-off-by: David Wei <dw@...idwei.uk>
> ---
>   net/xdp/xsk.c | 29 ++++++++++++++++++++++++++---
>   1 file changed, 26 insertions(+), 3 deletions(-)
> 

Reviewed-by: Nikolay Aleksandrov <razor@...ckwall.org>