netdev - Re: [PATCH net-next v4 1/2] net/mlx5: DMA-sync earlier in mlx5e_skb_from_cqe_mpwrq

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CANn89i+Zw7o+iGoN4Qf+wS-hL==DSZn8sMTT_7HerNuVd+uVPw@mail.gmail.com>
Date: Fri, 29 Aug 2025 09:33:54 -0700
From: Eric Dumazet <edumazet@...gle.com>
To: cpaasch@...nai.com
Cc: Gal Pressman <gal@...dia.com>, Dragos Tatulea <dtatulea@...dia.com>, 
	Saeed Mahameed <saeedm@...dia.com>, Tariq Toukan <tariqt@...dia.com>, Mark Bloch <mbloch@...dia.com>, 
	Leon Romanovsky <leon@...nel.org>, Andrew Lunn <andrew+netdev@...n.ch>, 
	"David S. Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
	Alexei Starovoitov <ast@...nel.org>, Daniel Borkmann <daniel@...earbox.net>, 
	Jesper Dangaard Brouer <hawk@...nel.org>, John Fastabend <john.fastabend@...il.com>, 
	Stanislav Fomichev <sdf@...ichev.me>, netdev@...r.kernel.org, linux-rdma@...r.kernel.org, 
	bpf@...r.kernel.org
Subject: Re: [PATCH net-next v4 1/2] net/mlx5: DMA-sync earlier in mlx5e_skb_from_cqe_mpwrq_nonlinear

On Thu, Aug 28, 2025 at 8:36 PM Christoph Paasch via B4 Relay
<devnull+cpaasch.openai.com@...nel.org> wrote:
>
> From: Christoph Paasch <cpaasch@...nai.com>
>
> Doing the call to dma_sync_single_for_cpu() earlier will allow us to
> adjust headlen based on the actual size of the protocol headers.
>
> Doing this earlier means that we don't need to call
> mlx5e_copy_skb_header() anymore and rather can call
> skb_copy_to_linear_data() directly.
>
> Signed-off-by: Christoph Paasch <cpaasch@...nai.com>
> ---

Reviewed-by: Eric Dumazet <edumazet@...gle.com>