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| author | Quentin Monnet | 2017-10-23 18:24:10 +0200 |
|---|---|---|
| committer | David S. Miller | 2017-10-24 02:25:08 +0200 |
| commit | f05e2c32f715985f54265b1e237b5cce1b576c71 (patch) | |
| tree | e2038a3c68b105bf6e58bb58d6c3d995a0bafe70 /tools/bpf/bpftool/main.h | |
| parent | tools: bpftool: add JSON output for `bpftool prog dump jited *` command (diff) | |
| download | kernel-qcow2-linux-f05e2c32f715985f54265b1e237b5cce1b576c71.tar.gz kernel-qcow2-linux-f05e2c32f715985f54265b1e237b5cce1b576c71.tar.xz kernel-qcow2-linux-f05e2c32f715985f54265b1e237b5cce1b576c71.zip | |
tools: bpftool: add JSON output for `bpftool prog dump xlated *` command
Add a new printing function to dump translated eBPF instructions as
JSON. As for plain output, opcodes are printed only on request (when
`opcodes` is provided on the command line).
The disassembled output is generated by the same code that is used by
the kernel verifier.
Example output:
$ bpftool --json --pretty prog dump xlated id 1
[{
"disasm": "(bf) r6 = r1"
},{
"disasm": "(61) r7 = *(u32 *)(r6 +16)"
},{
"disasm": "(95) exit"
}
]
$ bpftool --json --pretty prog dump xlated id 1 opcodes
[{
"disasm": "(bf) r6 = r1",
"opcodes": {
"code": "0xbf",
"src_reg": "0x1",
"dst_reg": "0x6",
"off": ["0x00","0x00"
],
"imm": ["0x00","0x00","0x00","0x00"
]
}
},{
"disasm": "(61) r7 = *(u32 *)(r6 +16)",
"opcodes": {
"code": "0x61",
"src_reg": "0x6",
"dst_reg": "0x7",
"off": ["0x10","0x00"
],
"imm": ["0x00","0x00","0x00","0x00"
]
}
},{
"disasm": "(95) exit",
"opcodes": {
"code": "0x95",
"src_reg": "0x0",
"dst_reg": "0x0",
"off": ["0x00","0x00"
],
"imm": ["0x00","0x00","0x00","0x00"
]
}
}
]
Signed-off-by: Quentin Monnet <quentin.monnet@netronome.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools/bpf/bpftool/main.h')
| -rw-r--r-- | tools/bpf/bpftool/main.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/bpf/bpftool/main.h b/tools/bpf/bpftool/main.h index 15927fc9fb31..693fc9710be1 100644 --- a/tools/bpf/bpftool/main.h +++ b/tools/bpf/bpftool/main.h @@ -95,5 +95,6 @@ int do_map(int argc, char **arg); int prog_parse_fd(int *argc, char ***argv); void disasm_print_insn(unsigned char *image, ssize_t len, int opcodes); +void print_hex_data_json(uint8_t *data, size_t len); #endif |