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

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Message-ID: <aLIsHYBqvTNhqlBf@x130>
Date: Fri, 29 Aug 2025 15:39:25 -0700
From: Saeed Mahameed <saeed@...nel.org>
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>,
	Eric Dumazet <edumazet@...gle.com>,
	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 28 Aug 20:36, Christoph Paasch via B4 Relay 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: Saeed Mahameed <saeedm@...dia.com>