BPFTOOL-STRUCT_OPS(8)       System Manager's Manual      BPFTOOL-STRUCT_OPS(8)

NAME
       bpftool-struct_ops - tool to register/unregister/introspect BPF
       struct_ops

SYNOPSIS
          bpftool [OPTIONS] struct_ops COMMAND

          OPTIONS := { { -j | --json } [{ -p | --pretty }] | { -d | --debug }
          }

          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

          -h, --help
                 Print short help message (similar to bpftool help).

          -V, --version
                 Print bpftool's version number (similar to bpftool version),
                 the number of the libbpf version in use, and optional
                 features that were included when bpftool was compiled.
                 Optional features include linking against LLVM or libbfd to
                 provide the disassembler for JIT-ted programs (bpftool prog
                 dump jited) and usage of BPF skeletons (some features like
                 bpftool prog profile or showing pids associated to BPF
                 objects may rely on it).

          -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
          bpf(2), bpf-helpers(7), 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)

                                                         BPFTOOL-STRUCT_OPS(8)