netdev - Re: [PATCH bpf-next] bpftool: Support sysctl hook

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Message-ID: <CAADnVQ+d8zEwUeADBuDVT9Y0WuKx3wJizDsmFb58Y6zz3JTYVQ@mail.gmail.com>
Date:   Tue, 16 Apr 2019 19:46:45 -0700
From:   Alexei Starovoitov <alexei.starovoitov@...il.com>
To:     Andrey Ignatov <rdna@...com>
Cc:     Network Development <netdev@...r.kernel.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Kernel Team <kernel-team@...com>
Subject: Re: [PATCH bpf-next] bpftool: Support sysctl hook

On Tue, Apr 16, 2019 at 1:13 PM Andrey Ignatov <rdna@...com> wrote:
>
> Add support for recently added BPF_PROG_TYPE_CGROUP_SYSCTL program type
> and BPF_CGROUP_SYSCTL attach type.
>
> Example of bpftool output with sysctl program from selftests:
>
>   # bpftool p load ./test_sysctl_prog.o /mnt/bpf/sysctl_prog type cgroup/sysctl
>   # bpftool p l
>   9: cgroup_sysctl  name sysctl_tcp_mem  tag 0dd05f81a8d0d52e  gpl
>           loaded_at 2019-04-16T12:57:27-0700  uid 0
>           xlated 1008B  jited 623B  memlock 4096B
>   # bpftool c a /mnt/cgroup2/bla sysctl id 9
>   # bpftool c t
>   CgroupPath
>   ID       AttachType      AttachFlags     Name
>   /mnt/cgroup2/bla
>       9        sysctl                          sysctl_tcp_mem
>   # bpftool c d /mnt/cgroup2/bla sysctl id 9
>   # bpftool c t
>   CgroupPath
>   ID       AttachType      AttachFlags     Name
>
> Signed-off-by: Andrey Ignatov <rdna@...com>

Applied. Thanks