> On Nov 7, 2019, at 8:52 AM, Toke Høiland-Jørgensen <toke@xxxxxxxxxx> wrote:
>
> From: Toke Høiland-Jørgensen <toke@xxxxxxxxxx>
>
> Currently, libbpf only provides a function to get a single ID for the XDP
> program attached to the interface. However, it can be useful to get the
> full set of program IDs attached, along with the attachment mode, in one
> go. Add a new getter function to support this, using an extendible
> structure to carry the information. Express the old bpf_get_link_id()
> function in terms of the new function.
>
> Signed-off-by: Toke Høiland-Jørgensen <toke@xxxxxxxxxx>
> ---
> tools/lib/bpf/libbpf.h | 10 ++++++
> tools/lib/bpf/libbpf.map | 1 +
> tools/lib/bpf/netlink.c | 78 ++++++++++++++++++++++++++++++----------------
> 3 files changed, 62 insertions(+), 27 deletions(-)
>
> diff --git a/tools/lib/bpf/libbpf.h b/tools/lib/bpf/libbpf.h
> index 6ddc0419337b..f0947cc949d2 100644
> --- a/tools/lib/bpf/libbpf.h
> +++ b/tools/lib/bpf/libbpf.h
> @@ -427,8 +427,18 @@ LIBBPF_API int bpf_prog_load_xattr(const struct bpf_prog_load_attr *attr,
> LIBBPF_API int bpf_prog_load(const char *file, enum bpf_prog_type type,
> struct bpf_object **pobj, int *prog_fd);
>
> +struct xdp_link_info {
> + __u32 prog_id;
> + __u32 drv_prog_id;
> + __u32 hw_prog_id;
> + __u32 skb_prog_id;
> + __u8 attach_mode;
> +};
> +
> LIBBPF_API int bpf_set_link_xdp_fd(int ifindex, int fd, __u32 flags);
> LIBBPF_API int bpf_get_link_xdp_id(int ifindex, __u32 *prog_id, __u32 flags);
> +LIBBPF_API int bpf_get_link_xdp_info(int ifindex, struct xdp_link_info *info,
> + size_t info_size, __u32 flags);
>
> struct perf_buffer;
>
> diff --git a/tools/lib/bpf/libbpf.map b/tools/lib/bpf/libbpf.map
> index 86173cbb159d..45f229af2766 100644
> --- a/tools/lib/bpf/libbpf.map
> +++ b/tools/lib/bpf/libbpf.map
> @@ -202,4 +202,5 @@ LIBBPF_0.0.6 {
> bpf_program__get_type;
> bpf_program__is_tracing;
> bpf_program__set_tracing;
> + bpf_get_link_xdp_info;
Please keep these entries in alphabetic order.
Just found I added most out-of-order entries. :(
Other than this
Acked-by: Song Liu <songliubraving@xxxxxx>
