mirror of https://gitee.com/openkylin/linux.git
117 lines
3.1 KiB
ReStructuredText
117 lines
3.1 KiB
ReStructuredText
==================
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bpftool-struct_ops
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==================
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-------------------------------------------------------------------------------
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tool to register/unregister/introspect BPF struct_ops
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-------------------------------------------------------------------------------
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:Manual section: 8
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SYNOPSIS
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========
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**bpftool** [*OPTIONS*] **struct_ops** *COMMAND*
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*OPTIONS* := { { **-j** | **--json** } [{ **-p** | **--pretty** }] }
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*COMMANDS* :=
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{ **show** | **list** | **dump** | **register** | **unregister** | **help** }
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STRUCT_OPS COMMANDS
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===================
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| **bpftool** **struct_ops { show | list }** [*STRUCT_OPS_MAP*]
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| **bpftool** **struct_ops dump** [*STRUCT_OPS_MAP*]
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| **bpftool** **struct_ops register** *OBJ*
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| **bpftool** **struct_ops unregister** *STRUCT_OPS_MAP*
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| **bpftool** **struct_ops help**
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| *STRUCT_OPS_MAP* := { **id** *STRUCT_OPS_MAP_ID* | **name** *STRUCT_OPS_MAP_NAME* }
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| *OBJ* := /a/file/of/bpf_struct_ops.o
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DESCRIPTION
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===========
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**bpftool struct_ops { show | list }** [*STRUCT_OPS_MAP*]
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Show brief information about the struct_ops in the system.
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If *STRUCT_OPS_MAP* is specified, it shows information only
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for the given struct_ops. Otherwise, it lists all struct_ops
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currently existing in the system.
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Output will start with struct_ops map ID, followed by its map
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name and its struct_ops's kernel type.
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**bpftool struct_ops dump** [*STRUCT_OPS_MAP*]
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Dump details information about the struct_ops in the system.
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If *STRUCT_OPS_MAP* is specified, it dumps information only
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for the given struct_ops. Otherwise, it dumps all struct_ops
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currently existing in the system.
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**bpftool struct_ops register** *OBJ*
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Register bpf struct_ops from *OBJ*. All struct_ops under
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the ELF section ".struct_ops" will be registered to
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its kernel subsystem.
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**bpftool struct_ops unregister** *STRUCT_OPS_MAP*
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Unregister the *STRUCT_OPS_MAP* from the kernel subsystem.
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**bpftool struct_ops help**
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Print short help message.
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OPTIONS
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=======
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-h, --help
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Print short generic help message (similar to **bpftool help**).
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-V, --version
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Print version number (similar to **bpftool version**).
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-j, --json
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Generate JSON output. For commands that cannot produce JSON, this
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option has no effect.
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-p, --pretty
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Generate human-readable JSON output. Implies **-j**.
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-d, --debug
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Print all logs available, even debug-level information. This
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includes logs from libbpf as well as from the verifier, when
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attempting to load programs.
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EXAMPLES
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========
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**# bpftool struct_ops show**
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::
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100: dctcp tcp_congestion_ops
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105: cubic tcp_congestion_ops
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**# bpftool struct_ops unregister id 105**
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::
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Unregistered tcp_congestion_ops cubic id 105
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**# bpftool struct_ops register bpf_cubic.o**
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::
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Registered tcp_congestion_ops cubic id 110
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SEE ALSO
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========
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**bpf**\ (2),
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**bpf-helpers**\ (7),
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**bpftool**\ (8),
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**bpftool-prog**\ (8),
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**bpftool-map**\ (8),
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**bpftool-cgroup**\ (8),
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**bpftool-feature**\ (8),
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**bpftool-net**\ (8),
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**bpftool-perf**\ (8),
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**bpftool-btf**\ (8)
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**bpftool-gen**\ (8)
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