bpftool-struct_ops - Man Page

tool to register/unregister/introspect BPF struct_ops

Synopsis

bpftool [Options] struct_ops COMMAND

Options := { { -j | --json } [{ -p | --pretty }] }

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
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

Register bpf struct_ops from OBJ.  All struct_ops under the ELF section ".struct_ops" will be registered to its kernel subsystem.

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

-h, --help

Print short generic help message (similar to bpftool help).

-V, --version

Print version number (similar to bpftool version).

-j, --json

Generate JSON output. For commands that cannot produce JSON, this option has no effect.

-p, --pretty

Generate human-readable JSON output. Implies -j.

-d, --debug

Print all logs available, even debug-level information. This includes logs from libbpf as well as from the verifier, when attempting to load programs.

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

See Also

Referenced By

bpftool(8), bpftool-btf(8), bpftool-cgroup(8), bpftool-feature(8), bpftool-gen(8), bpftool-iter(8), bpftool-link(8), bpftool-map(8), bpftool-net(8), bpftool-perf(8), bpftool-prog(8).