netdev - Re: [PATCH/v5] bpf: add bpf_skb_adjust_room flag BPF_F_ADJ_ROOM_ENCAP_L2

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Date:   Thu, 4 Mar 2021 08:55:26 -0500
From:   Willem de Bruijn <willemdebruijn.kernel@...il.com>
To:     Xuesen Huang <hxseverything@...il.com>
Cc:     Daniel Borkmann <daniel@...earbox.net>,
        David Miller <davem@...emloft.net>, bpf <bpf@...r.kernel.org>,
        Willem de Bruijn <willemdebruijn.kernel@...il.com>,
        Network Development <netdev@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Cong Wang <xiyou.wangcong@...il.com>,
        Xuesen Huang <huangxuesen@...ishou.com>,
        Zhiyong Cheng <chengzhiyong@...ishou.com>,
        Li Wang <wangli09@...ishou.com>
Subject: Re: [PATCH/v5] bpf: add bpf_skb_adjust_room flag BPF_F_ADJ_ROOM_ENCAP_L2_ETH

On Thu, Mar 4, 2021 at 1:41 AM Xuesen Huang <hxseverything@...il.com> wrote:
>
> From: Xuesen Huang <huangxuesen@...ishou.com>
>
> bpf_skb_adjust_room sets the inner_protocol as skb->protocol for packets
> encapsulation. But that is not appropriate when pushing Ethernet header.
>
> Add an option to further specify encap L2 type and set the inner_protocol
> as ETH_P_TEB.
>
> Suggested-by: Willem de Bruijn <willemb@...gle.com>
> Signed-off-by: Xuesen Huang <huangxuesen@...ishou.com>
> Signed-off-by: Zhiyong Cheng <chengzhiyong@...ishou.com>
> Signed-off-by: Li Wang <wangli09@...ishou.com>

Acked-by: Willem de Bruijn <willemb@...gle.com>