linux-stable/tools/bpf/bpftool/Documentation/bpftool-struct_ops.rst
Rameez Rehman ea379b3ccc bpftool: Remove useless emphasis on command description in man pages
As it turns out, the terms in definition lists in the rST file are
already rendered with bold-ish formatting when generating the man pages;
all double-star sequences we have in the commands for the command
description are unnecessary, and can be removed to make the
documentation easier to read.

The rST files were automatically processed with:

    sed -i '/DESCRIPTION/,/OPTIONS/ { /^\*/ s/\*\*//g }' b*.rst

Signed-off-by: Rameez Rehman <rameezrehman408@hotmail.com>
Signed-off-by: Quentin Monnet <qmo@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20240331200346.29118-3-qmo@kernel.org
2024-04-02 15:50:23 +02:00

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2.6 KiB
ReStructuredText

.. 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