diff options
| author | Benjamin Tissoires <benjamin.tissoires@redhat.com> | 2022-08-24 15:40:37 +0200 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2022-08-25 18:52:29 -0700 |
| commit | 343949e10798a52c6d6a14effc962e010ed471ae (patch) | |
| tree | 5c14bcefbdad7772bd17ed5f8b795d5fd8bc658c | |
| parent | b88df6979682333815536a0bf43bd56f9499f071 (diff) | |
libbpf: add map_get_fd_by_id and map_delete_elem in light skeleton
This allows to have a better control over maps from the kernel when
preloading eBPF programs.
Acked-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Link: https://lore.kernel.org/r/20220824134055.1328882-8-benjamin.tissoires@redhat.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
| -rw-r--r-- | tools/lib/bpf/skel_internal.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/tools/lib/bpf/skel_internal.h b/tools/lib/bpf/skel_internal.h index 00c5f94b43be..1e82ab06c3eb 100644 --- a/tools/lib/bpf/skel_internal.h +++ b/tools/lib/bpf/skel_internal.h @@ -251,6 +251,29 @@ static inline int skel_map_update_elem(int fd, const void *key, return skel_sys_bpf(BPF_MAP_UPDATE_ELEM, &attr, attr_sz); } +static inline int skel_map_delete_elem(int fd, const void *key) +{ + const size_t attr_sz = offsetofend(union bpf_attr, flags); + union bpf_attr attr; + + memset(&attr, 0, attr_sz); + attr.map_fd = fd; + attr.key = (long)key; + + return skel_sys_bpf(BPF_MAP_DELETE_ELEM, &attr, attr_sz); +} + +static inline int skel_map_get_fd_by_id(__u32 id) +{ + const size_t attr_sz = offsetofend(union bpf_attr, flags); + union bpf_attr attr; + + memset(&attr, 0, attr_sz); + attr.map_id = id; + + return skel_sys_bpf(BPF_MAP_GET_FD_BY_ID, &attr, attr_sz); +} + static inline int skel_raw_tracepoint_open(const char *name, int prog_fd) { const size_t attr_sz = offsetofend(union bpf_attr, raw_tracepoint.prog_fd); |