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| author |   Maciej Fijalkowski <maciejromanfijalkowski@gmail.com> | 2019-02-01 22:42:29 +0100 |
|---|---|---|
| committer |   Daniel Borkmann <daniel@iogearbox.net> | 2019-02-01 23:37:51 +0100 |
| commit | 50db9f0731889b9f3839cab5f44163733eb44f04 (patch) | |
| tree | c258a5f0eed345e022e671195b27623161ab763f /tools/lib/bpf/libbpf.h | |
| parent | samples/bpf: Add a "force" flag to XDP samples (diff) | |
| download | linux-dev-50db9f0731889b9f3839cab5f44163733eb44f04.tar.xz linux-dev-50db9f0731889b9f3839cab5f44163733eb44f04.zip | |
libbpf: Add a support for getting xdp prog id on ifindex
Since we have a dedicated netlink attributes for xdp setup on a
particular interface, it is now possible to retrieve the program id that
is currently attached to the interface. The use case is targeted for
sample xdp programs, which will store the program id just after loading
bpf program onto iface. On shutdown, the sample will make sure that it
can unload the program by querying again the iface and verifying that
both program id's matches.
Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'tools/lib/bpf/libbpf.h')
| -rw-r--r-- | tools/lib/bpf/libbpf.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/lib/bpf/libbpf.h b/tools/lib/bpf/libbpf.h index 931be6f3408c..43c77e98df6f 100644 --- a/tools/lib/bpf/libbpf.h +++ b/tools/lib/bpf/libbpf.h @@ -317,6 +317,7 @@ LIBBPF_API int bpf_prog_load(const char *file, enum bpf_prog_type type, struct bpf_object **pobj, int *prog_fd); 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); enum bpf_perf_event_ret { LIBBPF_PERF_EVENT_DONE = 0, |