netdev - Re: [PATCH bpf-next 1/4] samples/bpf: xdpsock: add VLAN support for Tx-only operation

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Message-ID: <CAPhsuW4NVM5=q2igHm_HFzueSsJsoByP-wz2PfJeA1KRXVDnvA@mail.gmail.com>
Date:   Fri, 26 Nov 2021 22:48:37 -0800
From:   Song Liu <song@...nel.org>
To:     Ong Boon Leong <boon.leong.ong@...el.com>
Cc:     bpf <bpf@...r.kernel.org>, Networking <netdev@...r.kernel.org>,
        bjorn@...nel.org, Magnus Karlsson <magnus.karlsson@...el.com>,
        Jonathan Lemon <jonathan.lemon@...il.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Jesper Dangaard Brouer <hawk@...nel.org>,
        John Fastabend <john.fastabend@...il.com>,
        Andrii Nakryiko <andrii@...nel.org>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        KP Singh <kpsingh@...nel.org>
Subject: Re: [PATCH bpf-next 1/4] samples/bpf: xdpsock: add VLAN support for
 Tx-only operation

On Wed, Nov 24, 2021 at 1:21 AM Ong Boon Leong <boon.leong.ong@...el.com> wrote:
>
> In multi-queue environment testing, the support for VLAN-tag based
> steering is useful. So, this patch adds the capability to add
> VLAN tag (VLAN ID and Priority) to the generated Tx frame.
>
> To set the VLAN ID=10 and Priority=2 for Tx only through TxQ=3:
>  $ xdpsock -i eth0 -t -N -z -q 3 -V -J 10 -K 2
>
> If VLAN ID (-J) and Priority (-K) is set, it default to
>   VLAN ID = 1
>   VLAN Priority = 0.
>
> For example, VLAN-tagged Tx only, xdp copy mode through TxQ=1:
>  $ xdpsock -i eth0 -t -N -c -q 1 -V
>
> Signed-off-by: Ong Boon Leong <boon.leong.ong@...el.com>

Acked-by: Song Liu <songliubraving@...com>