Messages in this thread Patch in this message | | | From | Benjamin Tissoires <> | Subject | [PATCH bpf-next v9 07/23] libbpf: add map_get_fd_by_id and map_delete_elem in light skeleton | Date | Wed, 24 Aug 2022 15:40:37 +0200 |
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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>
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no changes in v9
no changes in v8
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 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); -- 2.36.1
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