netdev - Re: [PATCH v2 net-next 14/14] mlx5: support BIG TCP packets

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Message-ID: <2b078aef-76a4-2912-9286-3de4922623ff@gmail.com>
Date:   Tue, 8 Mar 2022 18:02:00 +0200
From:   Tariq Toukan <ttoukan.linux@...il.com>
To:     Eric Dumazet <eric.dumazet@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     netdev <netdev@...r.kernel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Coco Li <lixiaoyan@...gle.com>,
        David Ahern <dsahern@...nel.org>,
        Alexander Duyck <alexanderduyck@...com>,
        Saeed Mahameed <saeedm@...dia.com>,
        Leon Romanovsky <leon@...nel.org>,
        Tariq Toukan <tariqt@...dia.com>
Subject: Re: [PATCH v2 net-next 14/14] mlx5: support BIG TCP packets



On 3/3/2022 8:16 PM, Eric Dumazet wrote:
> From: Coco Li <lixiaoyan@...gle.com>
> 
> mlx5 supports LSOv2.
> 
> IPv6 gro/tcp stacks insert a temporary Hop-by-Hop header
> with JUMBO TLV for big packets.
> 
> We need to ignore/skip this HBH header when populating TX descriptor.
> 
> Note that ipv6_has_hopopt_jumbo() only recognizes very specific packet
> layout, thus mlx5e_sq_xmit_wqe() is taking care of this layout only.
> 
> v2: clear hopbyhop in mlx5e_tx_get_gso_ihs()
> 
> Signed-off-by: Coco Li <lixiaoyan@...gle.com>
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
> Cc: Saeed Mahameed <saeedm@...dia.com>
> Cc: Leon Romanovsky <leon@...nel.org>
> ---
>   .../net/ethernet/mellanox/mlx5/core/en_main.c |  1 +
>   .../net/ethernet/mellanox/mlx5/core/en_tx.c   | 82 +++++++++++++++----
>   2 files changed, 67 insertions(+), 16 deletions(-)
> 

Reviewed-by: Tariq Toukan <tariqt@...dia.com>

Thanks.