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| author |   Stanislav Fomichev <sdf@google.com> | 2019-01-16 11:10:00 -0800 |
|---|---|---|
| committer |   Daniel Borkmann <daniel@iogearbox.net> | 2019-01-17 10:30:31 +0100 |
| commit | 8a89fff60a7ef63a23b112bdfa76d7ba160a4a68 (patch) | |
| tree | f7e37246eebeb9834f5525ccebc99c29c137bbf4 /tools/bpf/bpftool/Documentation | |
| parent | bpftool: make key and value optional in update command (diff) | |
| download | linux-dev-8a89fff60a7ef63a23b112bdfa76d7ba160a4a68.tar.xz linux-dev-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 'tools/bpf/bpftool/Documentation')
| -rw-r--r-- | tools/bpf/bpftool/Documentation/bpftool-map.rst | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/tools/bpf/bpftool/Documentation/bpftool-map.rst b/tools/bpf/bpftool/Documentation/bpftool-map.rst index 1f1dfe06e66d..f34cace771bd 100644 --- a/tools/bpf/bpftool/Documentation/bpftool-map.rst +++ b/tools/bpf/bpftool/Documentation/bpftool-map.rst @@ -26,7 +26,7 @@ MAP COMMANDS | **entries** *MAX_ENTRIES* **name** *NAME* [**flags** *FLAGS*] [**dev** *NAME*] | **bpftool** **map dump** *MAP* | **bpftool** **map update** *MAP* [**key** *DATA*] [**value** *VALUE*] [*UPDATE_FLAGS*] -| **bpftool** **map lookup** *MAP* **key** *DATA* +| **bpftool** **map lookup** *MAP* [**key** *DATA*] | **bpftool** **map getnext** *MAP* [**key** *DATA*] | **bpftool** **map delete** *MAP* **key** *DATA* | **bpftool** **map pin** *MAP* *FILE* @@ -75,7 +75,7 @@ DESCRIPTION the bytes are parsed as decimal values, unless a "0x" prefix (for hexadecimal) or a "0" prefix (for octal) is provided. - **bpftool map lookup** *MAP* **key** *DATA* + **bpftool map lookup** *MAP* [**key** *DATA*] Lookup **key** in the map. **bpftool map getnext** *MAP* [**key** *DATA*] |