netdev - Re: [PATCH v3 bpf-next 2/9] libbpf: introduce concept of bpf

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Date:   Fri, 28 Jun 2019 12:37:57 -0700
From:   Song Liu <liu.song.a23@...il.com>
To:     Andrii Nakryiko <andriin@...com>
Cc:     Andrii Nakryiko <andrii.nakryiko@...il.com>,
        Alexei Starovoitov <ast@...com>,
        Daniel Borkmann <daniel@...earbox.net>,
        Networking <netdev@...r.kernel.org>, bpf <bpf@...r.kernel.org>,
        Stanislav Fomichev <sdf@...ichev.me>,
        Kernel Team <kernel-team@...com>
Subject: Re: [PATCH v3 bpf-next 2/9] libbpf: introduce concept of bpf_link

On Thu, Jun 27, 2019 at 10:53 PM Andrii Nakryiko <andriin@...com> wrote:
>
> bpf_link is and abstraction of an association of a BPF program and one
> of many possible BPF attachment points (hooks). This allows to have
> uniform interface for detaching BPF programs regardless of the nature of
> link and how it was created. Details of creation and setting up of
> a specific bpf_link is handled by corresponding attachment methods
> (bpf_program__attach_xxx) added in subsequent commits. Once successfully
> created, bpf_link has to be eventually destroyed with
> bpf_link__destroy(), at which point BPF program is disassociated from
> a hook and all the relevant resources are freed.
>
> Signed-off-by: Andrii Nakryiko <andriin@...com>
Acked-by: Song Liu <songliubraving@...com>