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| author | Denis Salopek <denis.salopek@sartura.hr> | 2021-05-11 23:00:05 +0200 |
|---|---|---|
| committer | Andrii Nakryiko <andrii@kernel.org> | 2021-05-24 22:30:51 +0200 |
| commit | d59b9f2d1b2211e948044a099fd0a65941d06570 (patch) | |
| tree | 7a44f17e05374ab7176b6169236c49e90b7b9609 /tools/lib/bpf/bpf.c | |
| parent | bpf: Add lookup_and_delete_elem support to hashtab (diff) | |
| download | linux-d59b9f2d1b2211e948044a099fd0a65941d06570.tar.xz linux-d59b9f2d1b2211e948044a099fd0a65941d06570.zip | |
bpf: Extend libbpf with bpf_map_lookup_and_delete_elem_flags
Add bpf_map_lookup_and_delete_elem_flags() libbpf API in order to use
the BPF_F_LOCK flag with the map_lookup_and_delete_elem() function.
Signed-off-by: Denis Salopek <denis.salopek@sartura.hr>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/15b05dafe46c7e0750d110f233977372029d1f62.1620763117.git.denis.salopek@sartura.hr
Diffstat (limited to 'tools/lib/bpf/bpf.c')
| -rw-r--r-- | tools/lib/bpf/bpf.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/tools/lib/bpf/bpf.c b/tools/lib/bpf/bpf.c index bba48ff4c5c0..b7c2cc12034c 100644 --- a/tools/lib/bpf/bpf.c +++ b/tools/lib/bpf/bpf.c @@ -458,6 +458,19 @@ int bpf_map_lookup_and_delete_elem(int fd, const void *key, void *value) return sys_bpf(BPF_MAP_LOOKUP_AND_DELETE_ELEM, &attr, sizeof(attr)); } +int bpf_map_lookup_and_delete_elem_flags(int fd, const void *key, void *value, __u64 flags) +{ + union bpf_attr attr; + + memset(&attr, 0, sizeof(attr)); + attr.map_fd = fd; + attr.key = ptr_to_u64(key); + attr.value = ptr_to_u64(value); + attr.flags = flags; + + return sys_bpf(BPF_MAP_LOOKUP_AND_DELETE_ELEM, &attr, sizeof(attr)); +} + int bpf_map_delete_elem(int fd, const void *key) { union bpf_attr attr; |