netdev - Re: [PATCH net-next v2] net/mlx5e: Support bpf_xdp_adjust

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Message-ID: <CALzJLG_F0RYWRcAra_oqVNbH8jMJLf_octxxdA2jJyDMMbgzOg@mail.gmail.com>
Date:   Wed, 18 Jan 2017 13:45:07 +0200
From:   Saeed Mahameed <saeedm@....mellanox.co.il>
To:     Martin KaFai Lau <kafai@...com>
Cc:     Linux Netdev List <netdev@...r.kernel.org>,
        Saeed Mahameed <saeedm@...lanox.com>,
        Tariq Toukan <tariqt@...lanox.com>,
        Kernel Team <kernel-team@...com>
Subject: Re: [PATCH net-next v2] net/mlx5e: Support bpf_xdp_adjust_head()

On Wed, Jan 18, 2017 at 8:06 AM, Martin KaFai Lau <kafai@...com> wrote:
> This patch adds bpf_xdp_adjust_head() support to mlx5e.
>
> 1. rx_headroom is added to struct mlx5e_rq.  It uses
>    an existing 4 byte hole in the struct.
> 2. The adjusted data length is checked against
>    MLX5E_XDP_MIN_INLINE and MLX5E_SW2HW_MTU(rq->netdev->mtu).
> 3. The macro MLX5E_SW2HW_MTU is moved from en_main.c to en.h.
>    MLX5E_HW2SW_MTU is also moved to en.h for symmetric reason
>    but it is not a must.
>
> v2:
> - Keep the xdp specific logic in mlx5e_xdp_handle()
> - Update dma_len after the sanity checks in mlx5e_xmit_xdp_frame()
>
> Signed-off-by: Martin KaFai Lau <kafai@...com>

Acked-by: Saeed Mahameed <saeedm@...lanox.com>


Thank you Martin.