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BPFTOOL-PROG(8) - Linux man page online | Administration and privileged commands

Tool for inspection and simple manipulation of eBPF progs.

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BPFTOOL-PROG(8) BPFTOOL-PROG(8)

NAME

bpftool-prog - tool for inspection and simple manipulation of eBPF progs

SYNOPSIS

bpftool [OPTIONS] prog COMMAND OPTIONS := { { -j | --json } [{ -p | --pretty }] | { -f | --bpffs } } COMMANDS := { show | dump xlated | dump jited | pin | help }

MAP COMMANDS

bpftool prog show [PROG] bpftool prog dump xlated PROG [{file FILE | opcodes}] bpftool prog dump jited PROG [{file FILE | opcodes}] bpftool prog pin PROG FILE bpftool prog help PROG := { id PROG_ID | pinned FILE | tag PROG_TAG }

DESCRIPTION

bpftool prog show [PROG] Show information about loaded programs. If PROG is specified show information only about given program, otherwise list all programs currently loaded on the system. Output will start with program ID followed by program type and zero or more named attributes (depending on kernel version). bpftool prog dump xlated PROG [{ file FILE | opcodes }] Dump eBPF instructions of the program from the kernel. If FILE is specified image will be written to a file, otherwise it will be disassembled and printed to stdout. opcodes controls if raw opcodes will be printed. bpftool prog dump jited PROG [{ file FILE | opcodes }] Dump jited image (host machine code) of the program. If FILE is specified image will be written to a file, otherwise it will be disassembled and printed to std‐ out. opcodes controls if raw opcodes will be printed. bpftool prog pin PROG FILE Pin program PROG as FILE. Note: FILE must be located in bpffs mount. bpftool prog 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. -f, --bpffs Show file names of pinned programs.

EXAMPLES

# bpftool prog show 10: xdp name some_prog tag 005a3d2123620c8b loaded_at Sep 29/20:11 uid 0 xlated 528B jited 370B memlock 4096B map_ids 10 # bpftool --json --pretty prog show { "programs": [{ "id": 10, "type": "xdp", "tag": "005a3d2123620c8b", "loaded_at": "Sep 29/20:11", "uid": 0, "bytes_xlated": 528, "jited": true, "bytes_jited": 370, "bytes_memlock": 4096, "map_ids": [10 ] } ] } # bpftool prog dump xlated id 10 file /tmp/t # ls -l /tmp/t -rw------- 1 root root 560 Jul 22 01:42 /tmp/t # bpftool prog dum jited tag 005a3d2123620c8b push %rbp mov %rsp,%rbp sub $0x228,%rsp sub $0x28,%rbp mov %rbx,0x0(%rbp) # mount -t bpf none /sys/fs/bpf/ # bpftool prog pin id 10 /sys/fs/bpf/prog # ls -l /sys/fs/bpf/ -rw------- 1 root root 0 Jul 22 01:43 prog # bpftool prog dum jited pinned /sys/fs/bpf/prog opcodes push %rbp 55 mov %rsp,%rbp 48 89 e5 sub $0x228,%rsp 48 81 ec 28 02 00 00 sub $0x28,%rbp 48 83 ed 28 mov %rbx,0x0(%rbp) 48 89 5d 00

SEE ALSO

bpftool(8), bpftool-map(8)
BPFTOOL-PROG(8)
This manual Reference Other manuals
bpftool-prog(8) referred by bpftool(8) | bpftool-map(8)
refer to bpftool(8) | bpftool-map(8)
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