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| author | Stanislav Fomichev <sdf@google.com> | 2019-01-16 20:10:00 +0100 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2019-01-17 10:30:31 +0100 |
| commit | 8a89fff60a7ef63a23b112bdfa76d7ba160a4a68 (patch) | |
| tree | f7e37246eebeb9834f5525ccebc99c29c137bbf4 /tools/bpf/bpftool/map.c | |
| parent | bpftool: make key and value optional in update command (diff) | |
| download | linux-8a89fff60a7ef63a23b112bdfa76d7ba160a4a68.tar.xz linux-8a89fff60a7ef63a23b112bdfa76d7ba160a4a68.zip | |
bpftool: make key optional in lookup command
Bpftool expects key for 'lookup' operations. For some map types, key should
not be specified. Support looking up those map types.
Before:
bpftool map create /sys/fs/bpf/q type queue value 4 entries 10 name q
bpftool map update pinned /sys/fs/bpf/q value 0 1 2 3
bpftool map lookup pinned /sys/fs/bpf/q
Error: did not find key
After:
bpftool map create /sys/fs/bpf/q type queue value 4 entries 10 name q
bpftool map update pinned /sys/fs/bpf/q value 0 1 2 3
bpftool map lookup pinned /sys/fs/bpf/q
key: value: 00 01 02 03
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to '')
| -rw-r--r-- | tools/bpf/bpftool/map.c | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/tools/bpf/bpftool/map.c b/tools/bpf/bpftool/map.c index 61453a1ba6e1..4256842f9664 100644 --- a/tools/bpf/bpftool/map.c +++ b/tools/bpf/bpftool/map.c @@ -865,13 +865,9 @@ static int do_lookup(int argc, char **argv) if (fd < 0) return -1; - key = malloc(info.key_size); - value = alloc_value(&info); - if (!key || !value) { - p_err("mem alloc failed"); - err = -1; + err = alloc_key_value(&info, &key, &value); + if (err) goto exit_free; - } err = parse_elem(argv, &info, key, NULL, info.key_size, 0, NULL, NULL); if (err) @@ -1158,7 +1154,7 @@ static int do_help(int argc, char **argv) " [dev NAME]\n" " %s %s dump MAP\n" " %s %s update MAP [key DATA] [value VALUE] [UPDATE_FLAGS]\n" - " %s %s lookup MAP key DATA\n" + " %s %s lookup MAP [key DATA]\n" " %s %s getnext MAP [key DATA]\n" " %s %s delete MAP key DATA\n" " %s %s pin MAP FILE\n" |