netdev - Re: [PATCH bpf-next 10/11] bpf: sync bpf uapi header with tools

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Date:   Wed, 30 May 2018 09:10:01 -0700
From:   Song Liu <liu.song.a23@...il.com>
To:     Daniel Borkmann <daniel@...earbox.net>
Cc:     Alexei Starovoitov <ast@...nel.org>,
        Networking <netdev@...r.kernel.org>
Subject: Re: [PATCH bpf-next 10/11] bpf: sync bpf uapi header with tools

On Sun, May 27, 2018 at 5:43 PM, Daniel Borkmann <daniel@...earbox.net> wrote:
> Pull in recent changes from include/uapi/linux/bpf.h.
>
> Signed-off-by: Daniel Borkmann <daniel@...earbox.net>
> Acked-by: Alexei Starovoitov <ast@...nel.org>

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

> ---
>  tools/include/uapi/linux/bpf.h | 20 ++++++++++++++++++--
>  1 file changed, 18 insertions(+), 2 deletions(-)
>
> diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
> index 9b8c6e3..7108711 100644
> --- a/tools/include/uapi/linux/bpf.h
> +++ b/tools/include/uapi/linux/bpf.h
> @@ -2004,6 +2004,20 @@ union bpf_attr {
>   *             direct packet access.
>   *     Return
>   *             0 on success, or a negative error in case of failure.
> + *
> + * uint64_t bpf_skb_cgroup_id(struct sk_buff *skb)
> + *     Description
> + *             Return the cgroup v2 id of the socket associated with the *skb*.
> + *             This is roughly similar to the **bpf_get_cgroup_classid**\ ()
> + *             helper for cgroup v1 by providing a tag resp. identifier that
> + *             can be matched on or used for map lookups e.g. to implement
> + *             policy. The cgroup v2 id of a given path in the hierarchy is
> + *             exposed in user space through the f_handle API in order to get
> + *             to the same 64-bit id.
> + *
> + *             This helper can be used on TC egress path, but not on ingress.
> + *     Return
> + *             The id is returned or 0 in case the id could not be retrieved.
>   */
>  #define __BPF_FUNC_MAPPER(FN)          \
>         FN(unspec),                     \
> @@ -2082,7 +2096,8 @@ union bpf_attr {
>         FN(lwt_push_encap),             \
>         FN(lwt_seg6_store_bytes),       \
>         FN(lwt_seg6_adjust_srh),        \
> -       FN(lwt_seg6_action),
> +       FN(lwt_seg6_action),            \
> +       FN(skb_cgroup_id),
>
>  /* integer value in 'imm' field of BPF_CALL instruction selects which helper
>   * function eBPF program intends to call
> @@ -2199,7 +2214,7 @@ struct bpf_tunnel_key {
>         };
>         __u8 tunnel_tos;
>         __u8 tunnel_ttl;
> -       __u16 tunnel_ext;
> +       __u16 tunnel_ext;       /* Padding, future use. */
>         __u32 tunnel_label;
>  };
>
> @@ -2210,6 +2225,7 @@ struct bpf_xfrm_state {
>         __u32 reqid;
>         __u32 spi;      /* Stored in network byte order */
>         __u16 family;
> +       __u16 ext;      /* Padding, future use. */
>         union {
>                 __u32 remote_ipv4;      /* Stored in network byte order */
>                 __u32 remote_ipv6[4];   /* Stored in network byte order */
> --
> 2.9.5
>