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authorJakub Kicinski <jakub.kicinski@netronome.com>2017-10-09 20:30:13 +0300
committerDavid S. Miller <davem@davemloft.net>2017-10-10 22:30:16 +0300
commitc9c35995bcf812ee8136f634c25bc6ccc3021d4c (patch)
treea27745367592357b7ff46ac3253d989f5a3e8129 /tools/bpf/bpftool/Documentation
parentf4ac7e0b5cc8d16004ac57ff679266d573f30f77 (diff)
downloadlinux-c9c35995bcf812ee8136f634c25bc6ccc3021d4c.tar.xz
tools: bpftool: use the kernel's instruction printer
Compile the instruction printer from kernel/bpf and use it for disassembling "translated" eBPF code. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools/bpf/bpftool/Documentation')
-rw-r--r--tools/bpf/bpftool/Documentation/bpftool-prog.rst11
1 files changed, 7 insertions, 4 deletions
diff --git a/tools/bpf/bpftool/Documentation/bpftool-prog.rst b/tools/bpf/bpftool/Documentation/bpftool-prog.rst
index 57fc4b9924ea..04d12f768f06 100644
--- a/tools/bpf/bpftool/Documentation/bpftool-prog.rst
+++ b/tools/bpf/bpftool/Documentation/bpftool-prog.rst
@@ -11,7 +11,7 @@ SYNOPSIS
========
| **bpftool** prog show [*PROG*]
-| **bpftool** prog dump xlated *PROG* file *FILE*
+| **bpftool** prog dump xlated *PROG* [file *FILE*] [opcodes]
| **bpftool** prog dump jited *PROG* [file *FILE*] [opcodes]
| **bpftool** prog pin *PROG* *FILE*
| **bpftool** prog help
@@ -28,9 +28,12 @@ DESCRIPTION
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*
- Dump eBPF instructions of the program from the kernel to a
- file.
+ **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.