netdev - Re: [PATCH net-next v8 4/7] net/mlx5: Kconfig: Make tc offload depend on tc skb extension

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Date:   Mon, 06 Feb 2023 07:40:43 -0800
From:   Alexander H Duyck <alexander.duyck@...il.com>
To:     Paul Blakey <paulb@...dia.com>, netdev@...r.kernel.org,
        Saeed Mahameed <saeedm@...dia.com>,
        Paolo Abeni <pabeni@...hat.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Jamal Hadi Salim <jhs@...atatu.com>,
        Cong Wang <xiyou.wangcong@...il.com>,
        "David S. Miller" <davem@...emloft.net>
Cc:     Oz Shlomo <ozsh@...dia.com>, Jiri Pirko <jiri@...dia.com>,
        Roi Dayan <roid@...dia.com>, Vlad Buslov <vladbu@...dia.com>
Subject: Re: [PATCH net-next v8 4/7] net/mlx5: Kconfig: Make tc offload
 depend on tc skb extension

On Sun, 2023-02-05 at 17:49 +0200, Paul Blakey wrote:
> Tc skb extension is a basic requirement for using tc
> offload to support correct restoration on action miss.
> 
> Depend on it.
> 
> Signed-off-by: Paul Blakey <paulb@...dia.com>
> ---
>  drivers/net/ethernet/mellanox/mlx5/core/Kconfig     | 2 +-
>  drivers/net/ethernet/mellanox/mlx5/core/en/rep/tc.c | 2 --
>  drivers/net/ethernet/mellanox/mlx5/core/en_tc.c     | 2 --
>  3 files changed, 1 insertion(+), 5 deletions(-)
> 

So one question I had is what about the use of the SKB_EXT check in
mlx5/core/en_tc.h? Seems like you could remove that one as well since
it is wrapped in a check for MLX5_CLS_ACT before the check for
NET_TC_SKB_EXT.