netdev - Re: [PATCH/v3] bpf: add bpf_skb_adjust_room flag BPF_F_ADJ_ROOM_ENCAP_L2

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Message-ID: <CAM_iQpUAc5sB1xzqE7RvG5pQHQeCPJx5qAz_m9LaJYZ4pKfZsQ@mail.gmail.com>
Date:   Fri, 26 Feb 2021 12:15:42 -0800
From:   Cong Wang <xiyou.wangcong@...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>,
        Linux Kernel Network Developers <netdev@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Xuesen Huang <huangxuesen@...ishou.com>,
        Willem de Bruijn <willemb@...gle.com>,
        Zhiyong Cheng <chengzhiyong@...ishou.com>,
        Li Wang <wangli09@...ishou.com>
Subject: Re: [PATCH/v3] bpf: add bpf_skb_adjust_room flag BPF_F_ADJ_ROOM_ENCAP_L2_ETH

On Thu, Feb 25, 2021 at 7:59 PM Xuesen Huang <hxseverything@...il.com> wrote:
> v3:
> - Fix the code format.
>
> v2:
> Suggested-by: Willem de Bruijn <willemb@...gle.com>
> - Add a new flag to specify the type of the inner packet.

These need to be moved after '---', otherwise it would be merged
into the final git log.

>
> 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>
> ---
>  include/uapi/linux/bpf.h       |  5 +++++
>  net/core/filter.c              | 11 ++++++++++-
>  tools/include/uapi/linux/bpf.h |  5 +++++
>  3 files changed, 20 insertions(+), 1 deletion(-)

As a good practice, please add a test case for this in
tools/testing/selftests/bpf/progs/test_tc_tunnel.c.

Thanks.