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
---
no changes in v7
no changes in v6
new in v5 --- tools/lib/bpf/skel_internal.h | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+)
diff --git a/tools/lib/bpf/skel_internal.h b/tools/lib/bpf/skel_internal.h index bd6f4505e7b1..bc1db60ad744 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);