From 549d4d3da7c4a75c25ea2726223ab96a1eeb135f Mon Sep 17 00:00:00 2001
From: Stanislav Fomichev <sdf@google.com>
Date: Wed, 16 Jan 2019 11:10:03 -0800
Subject: [PATCH] bpftool: add push and enqueue commands
This is intended to be used with queues and stacks and be more
user-friendly than 'update' without the key.
Example:
bpftool map create /sys/fs/bpf/q type queue value 4 entries 10 name q
bpftool map push pinned /sys/fs/bpf/q value 0 1 2 3
bpftool map peek pinned /sys/fs/bpf/q
value: 00 01 02 03
bpftool map create /sys/fs/bpf/s type stack value 4 entries 10 name s
bpftool map enqueue pinned /sys/fs/bpf/s value 0 1 2 3
bpftool map peek pinned /sys/fs/bpf/s
value: 00 01 02 03
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
---
tools/bpf/bpftool/Documentation/bpftool-map.rst | 8 ++++++++
tools/bpf/bpftool/map.c | 7 ++++++-
2 files changed, 14 insertions(+), 1 deletion(-)
diff --git a/tools/bpf/bpftool/Documentation/bpftool-map.rst b/tools/bpf/bpftool/Documentation/bpftool-map.rst
index b79da683da889..435a79d2eed56 100644
--- a/tools/bpf/bpftool/Documentation/bpftool-map.rst
+++ b/tools/bpf/bpftool/Documentation/bpftool-map.rst
@@ -32,6 +32,8 @@ MAP COMMANDS
| **bpftool** **map pin** *MAP* *FILE*
| **bpftool** **map event_pipe** *MAP* [**cpu** *N* **index** *M*]
| **bpftool** **map peek** *MAP*
+| **bpftool** **map push** *MAP* **value** *VALUE*
+| **bpftool** **map enqueue** *MAP* **value** *VALUE*
| **bpftool** **map help**
|
| *MAP* := { **id** *MAP_ID* | **pinned** *FILE* }
@@ -111,6 +113,12 @@ DESCRIPTION
**bpftool map peek** *MAP*
Peek next **value** in the queue or stack.
+ **bpftool map push** *MAP* **value** *VALUE*
+ Push **value** onto the stack.
+
+ **bpftool map enqueue** *MAP* **value** *VALUE*
+ Enqueue **value** into the queue.
+
**bpftool map help**
Print short help message.
diff --git a/tools/bpf/bpftool/map.c b/tools/bpf/bpftool/map.c
index d7344fcd20892..6b5fcbe2d9d4b 100644
--- a/tools/bpf/bpftool/map.c
+++ b/tools/bpf/bpftool/map.c
@@ -1169,6 +1169,8 @@ static int do_help(int argc, char **argv)
" %s %s pin MAP FILE\n"
" %s %s event_pipe MAP [cpu N index M]\n"
" %s %s peek MAP\n"
+ " %s %s push MAP value VALUE\n"
+ " %s %s enqueue MAP value VALUE\n"
" %s %s help\n"
"\n"
" " HELP_SPEC_MAP "\n"
@@ -1186,7 +1188,8 @@ static int do_help(int argc, char **argv)
bin_name, argv[-2], bin_name, argv[-2], bin_name, argv[-2],
bin_name, argv[-2], bin_name, argv[-2], bin_name, argv[-2],
bin_name, argv[-2], bin_name, argv[-2], bin_name, argv[-2],
- bin_name, argv[-2], bin_name, argv[-2]);
+ bin_name, argv[-2], bin_name, argv[-2], bin_name, argv[-2],
+ bin_name, argv[-2]);
return 0;
}
@@ -1204,6 +1207,8 @@ static const struct cmd cmds[] = {
{ "event_pipe", do_event_pipe },
{ "create", do_create },
{ "peek", do_lookup },
+ { "push", do_update },
+ { "enqueue", do_update },
{ 0 }
};
--
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