Re: [PATCH bpf-next v4 2/5] libbpf: Add bpf_link support for BPF_PROG_TYPE_SOCKMAP

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On Wed, Apr 3, 2024 at 7:53 PM Yonghong Song <yonghong.song@xxxxxxxxx> wrote:
>
> Introduce a libbpf API function bpf_program__attach_sockmap()
> which allow user to get a bpf_link for their corresponding programs.
>
> Acked-by: Eduard Zingerman <eddyz87@xxxxxxxxx>
> Signed-off-by: Yonghong Song <yonghong.song@xxxxxxxxx>
> ---
>  tools/lib/bpf/libbpf.c         | 7 +++++++
>  tools/lib/bpf/libbpf.h         | 2 ++
>  tools/lib/bpf/libbpf.map       | 6 ++++++
>  tools/lib/bpf/libbpf_version.h | 2 +-
>  4 files changed, 16 insertions(+), 1 deletion(-)
>
> diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
> index b091154bc5b5..97eb6e5dd7c8 100644
> --- a/tools/lib/bpf/libbpf.c
> +++ b/tools/lib/bpf/libbpf.c
> @@ -149,6 +149,7 @@ static const char * const link_type_name[] = {
>         [BPF_LINK_TYPE_TCX]                     = "tcx",
>         [BPF_LINK_TYPE_UPROBE_MULTI]            = "uprobe_multi",
>         [BPF_LINK_TYPE_NETKIT]                  = "netkit",
> +       [BPF_LINK_TYPE_SOCKMAP]                 = "sockmap",
>  };
>
>  static const char * const map_type_name[] = {
> @@ -12533,6 +12534,12 @@ bpf_program__attach_netns(const struct bpf_program *prog, int netns_fd)
>         return bpf_program_attach_fd(prog, netns_fd, "netns", NULL);
>  }
>
> +struct bpf_link *
> +bpf_program__attach_sockmap(const struct bpf_program *prog, int map_fd)
> +{
> +       return bpf_program_attach_fd(prog, map_fd, "sockmap", NULL);
> +}
> +
>  struct bpf_link *bpf_program__attach_xdp(const struct bpf_program *prog, int ifindex)
>  {
>         /* target_fd/target_ifindex use the same field in LINK_CREATE */
> diff --git a/tools/lib/bpf/libbpf.h b/tools/lib/bpf/libbpf.h
> index f88ab50c0229..4c7ada03bf4f 100644
> --- a/tools/lib/bpf/libbpf.h
> +++ b/tools/lib/bpf/libbpf.h
> @@ -795,6 +795,8 @@ bpf_program__attach_cgroup(const struct bpf_program *prog, int cgroup_fd);
>  LIBBPF_API struct bpf_link *
>  bpf_program__attach_netns(const struct bpf_program *prog, int netns_fd);
>  LIBBPF_API struct bpf_link *
> +bpf_program__attach_sockmap(const struct bpf_program *prog, int map_fd);
> +LIBBPF_API struct bpf_link *
>  bpf_program__attach_xdp(const struct bpf_program *prog, int ifindex);
>  LIBBPF_API struct bpf_link *
>  bpf_program__attach_freplace(const struct bpf_program *prog,
> diff --git a/tools/lib/bpf/libbpf.map b/tools/lib/bpf/libbpf.map
> index 51732ecb1385..015737439007 100644
> --- a/tools/lib/bpf/libbpf.map
> +++ b/tools/lib/bpf/libbpf.map
> @@ -411,8 +411,14 @@ LIBBPF_1.3.0 {
>  LIBBPF_1.4.0 {
>         global:
>                 bpf_program__attach_raw_tracepoint_opts;
> +               bpf_program__attach_sockmap;

leftover from the previous revision? please remove

with that:

Acked-by: Andrii Nakryiko <andrii@xxxxxxxxxx>

>                 bpf_raw_tracepoint_open_opts;
>                 bpf_token_create;
>                 btf__new_split;
>                 btf_ext__raw_data;
>  } LIBBPF_1.3.0;
> +
> +LIBBPF_1.5.0 {
> +       global:
> +               bpf_program__attach_sockmap;
> +} LIBBPF_1.4.0;
> diff --git a/tools/lib/bpf/libbpf_version.h b/tools/lib/bpf/libbpf_version.h
> index e783a47da815..d6e5eff967cb 100644
> --- a/tools/lib/bpf/libbpf_version.h
> +++ b/tools/lib/bpf/libbpf_version.h
> @@ -4,6 +4,6 @@
>  #define __LIBBPF_VERSION_H
>
>  #define LIBBPF_MAJOR_VERSION 1
> -#define LIBBPF_MINOR_VERSION 4
> +#define LIBBPF_MINOR_VERSION 5
>
>  #endif /* __LIBBPF_VERSION_H */
> --
> 2.43.0
>





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