netdev - Re: [PATCH bpf-next v2 6/7] Sync uapi/bpf.h to tools/include

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Date:   Wed, 10 Oct 2018 09:14:51 -0700
From:   Song Liu <liu.song.a23@...il.com>
To:     mauricio.vasquez@...ito.it
Cc:     Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Networking <netdev@...r.kernel.org>
Subject: Re: [PATCH bpf-next v2 6/7] Sync uapi/bpf.h to tools/include

On Wed, Oct 10, 2018 at 7:06 AM Mauricio Vasquez B
<mauricio.vasquez@...ito.it> wrote:
>
> Sync both files.
>
> Signed-off-by: Mauricio Vasquez B <mauricio.vasquez@...ito.it>
Acked-by: Song Liu <songliubraving@...com>

> ---
>  tools/include/uapi/linux/bpf.h |   30 +++++++++++++++++++++++++++++-
>  1 file changed, 29 insertions(+), 1 deletion(-)
>
> diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
> index f9187b41dff6..c8824d5364ff 100644
> --- a/tools/include/uapi/linux/bpf.h
> +++ b/tools/include/uapi/linux/bpf.h
> @@ -103,6 +103,7 @@ enum bpf_cmd {
>         BPF_BTF_LOAD,
>         BPF_BTF_GET_FD_BY_ID,
>         BPF_TASK_FD_QUERY,
> +       BPF_MAP_LOOKUP_AND_DELETE_ELEM,
>  };
>
>  enum bpf_map_type {
> @@ -128,6 +129,8 @@ enum bpf_map_type {
>         BPF_MAP_TYPE_CGROUP_STORAGE,
>         BPF_MAP_TYPE_REUSEPORT_SOCKARRAY,
>         BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE,
> +       BPF_MAP_TYPE_QUEUE,
> +       BPF_MAP_TYPE_STACK,
>  };
>
>  enum bpf_prog_type {
> @@ -462,6 +465,28 @@ union bpf_attr {
>   *     Return
>   *             0 on success, or a negative error in case of failure.
>   *
> + * int bpf_map_push_elem(struct bpf_map *map, const void *value, u64 flags)
> + *     Description
> + *             Push an element *value* in *map*. *flags* is one of:
> + *
> + *             **BPF_EXIST**
> + *             If the queue/stack is full, the oldest element is removed to
> + *             make room for this.
> + *     Return
> + *             0 on success, or a negative error in case of failure.
> + *
> + * int bpf_map_pop_elem(struct bpf_map *map, void *value)
> + *     Description
> + *             Pop an element from *map*.
> + * Return
> + *             0 on success, or a negative error in case of failure.
> + *
> + * int bpf_map_peek_elem(struct bpf_map *map, void *value)
> + *     Description
> + *             Get an element from *map* without removing it.
> + * Return
> + *             0 on success, or a negative error in case of failure.
> + *
>   * int bpf_probe_read(void *dst, u32 size, const void *src)
>   *     Description
>   *             For tracing programs, safely attempt to read *size* bytes from
> @@ -2303,7 +2328,10 @@ union bpf_attr {
>         FN(skb_ancestor_cgroup_id),     \
>         FN(sk_lookup_tcp),              \
>         FN(sk_lookup_udp),              \
> -       FN(sk_release),
> +       FN(sk_release),                 \
> +       FN(map_push_elem),              \
> +       FN(map_pop_elem),               \
> +       FN(map_peek_elem),
>
>  /* integer value in 'imm' field of BPF_CALL instruction selects which helper
>   * function eBPF program intends to call
>