blob: 8022b5321dbe6f29b6bb00b787b00c18c69bce7c (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
.. SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
==================
bpftool-struct_ops
==================
-------------------------------------------------------------------------------
tool to register/unregister/introspect BPF struct_ops
-------------------------------------------------------------------------------
:Manual section: 8
.. include:: substitutions.rst
SYNOPSIS
========
**bpftool** [*OPTIONS*] **struct_ops** *COMMAND*
*OPTIONS* := { |COMMON_OPTIONS| }
*COMMANDS* :=
{ **show** | **list** | **dump** | **register** | **unregister** | **help** }
STRUCT_OPS COMMANDS
===================
| **bpftool** **struct_ops { show | list }** [*STRUCT_OPS_MAP*]
| **bpftool** **struct_ops dump** [*STRUCT_OPS_MAP*]
| **bpftool** **struct_ops register** *OBJ* [*LINK_DIR*]
| **bpftool** **struct_ops unregister** *STRUCT_OPS_MAP*
| **bpftool** **struct_ops help**
|
| *STRUCT_OPS_MAP* := { **id** *STRUCT_OPS_MAP_ID* | **name** *STRUCT_OPS_MAP_NAME* }
| *OBJ* := /a/file/of/bpf_struct_ops.o
DESCRIPTION
===========
**bpftool struct_ops { show | list }** [*STRUCT_OPS_MAP*]
Show brief information about the struct_ops in the system.
If *STRUCT_OPS_MAP* is specified, it shows information only
for the given struct_ops. Otherwise, it lists all struct_ops
currently existing in the system.
Output will start with struct_ops map ID, followed by its map
name and its struct_ops's kernel type.
**bpftool struct_ops dump** [*STRUCT_OPS_MAP*]
Dump details information about the struct_ops in the system.
If *STRUCT_OPS_MAP* is specified, it dumps information only
for the given struct_ops. Otherwise, it dumps all struct_ops
currently existing in the system.
**bpftool struct_ops register** *OBJ* [*LINK_DIR*]
Register bpf struct_ops from *OBJ*. All struct_ops under
the ELF section ".struct_ops" and ".struct_ops.link" will
be registered to its kernel subsystem. For each
struct_ops in the ".struct_ops.link" section, a link
will be created. You can give *LINK_DIR* to provide a
directory path where these links will be pinned with the
same name as their corresponding map name.
**bpftool struct_ops unregister** *STRUCT_OPS_MAP*
Unregister the *STRUCT_OPS_MAP* from the kernel subsystem.
**bpftool struct_ops help**
Print short help message.
OPTIONS
=======
.. include:: common_options.rst
EXAMPLES
========
**# bpftool struct_ops show**
::
100: dctcp tcp_congestion_ops
105: cubic tcp_congestion_ops
**# bpftool struct_ops unregister id 105**
::
Unregistered tcp_congestion_ops cubic id 105
**# bpftool struct_ops register bpf_cubic.o**
::
Registered tcp_congestion_ops cubic id 110
|