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bpftool [OPTIONS] struct_ops COMMAND
OPTIONS := { |COMMON_OPTIONS| }
COMMANDS := { show | list | dump | register | unregister | help }
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
- 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.
# 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