On Mon, Mar 25, 2024 at 7:22 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.
>
> 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 | 1 +
> 3 files changed, 10 insertions(+)
>
> diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
> index 8eb2cd4ef288..e1bb9ba3d1a5 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[] = {
> @@ -12507,6 +12508,12 @@ 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..2e5c3429b974 100644
> --- a/tools/lib/bpf/libbpf.map
> +++ b/tools/lib/bpf/libbpf.map
> @@ -411,6 +411,7 @@ LIBBPF_1.3.0 {
> LIBBPF_1.4.0 {
> global:
> bpf_program__attach_raw_tracepoint_opts;
> + bpf_program__attach_sockmap;
we are now in 1.5 development cycle, for next revision please put it
into a new section
> bpf_raw_tracepoint_open_opts;
> bpf_token_create;
> btf__new_split;
> --
> 2.43.0
>
