linux-kernel - Re: [PATCH bpf-next v6 1/2] bpf: support BPF_PROG

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Message-ID: <87wniunsxt.fsf@cloudflare.com>
Date:   Thu, 20 Jan 2022 19:49:34 +0100
From:   Jakub Sitnicki <jakub@...udflare.com>
To:     Di Zhu <zhudi2@...wei.com>
Cc:     andrii.nakryiko@...il.com, ast@...nel.org, davem@...emloft.net,
        daniel@...earbox.net, andrii@...nel.org, kafai@...com,
        songliubraving@...com, yhs@...com, john.fastabend@...il.com,
        kpsingh@...nel.org, bpf@...r.kernel.org,
        linux-kernel@...r.kernel.org, luzhihao@...wei.com,
        rose.chen@...wei.com
Subject: Re: [PATCH bpf-next v6 1/2] bpf: support BPF_PROG_QUERY for progs
 attached to sockmap

On Wed, Jan 19, 2022 at 02:40 AM CET, Di Zhu wrote:
> Right now there is no way to query whether BPF programs are
> attached to a sockmap or not.
>
> we can use the standard interface in libbpf to query, such as:
> bpf_prog_query(mapFd, BPF_SK_SKB_STREAM_PARSER, 0, NULL, ...);
> the mapFd is the fd of sockmap.
>
> Signed-off-by: Di Zhu <zhudi2@...wei.com>
> Acked-by: Yonghong Song <yhs@...com>
> ---

Thanks for adding the annotation.

Reviewed-by: Jakub Sitnicki <jakub@...udflare.com>