diff options
| author | Jiayuan Chen <[email protected]> | 2025-05-16 14:47:02 +0000 |
|---|---|---|
| committer | Alexei Starovoitov <[email protected]> | 2025-05-27 17:31:20 +0000 |
| commit | 1ae7a84ed85317b12a3395470f0cfcc900b2a61a (patch) | |
| tree | fa66b2c3432e424c9fed17c17eddc38ef458c829 /tools/bpf/bpftool/prog.c | |
| parent | selftests/bpf: Add unit tests with __bpf_trap() kfunc (diff) | |
| download | kernel-1ae7a84ed85317b12a3395470f0cfcc900b2a61a.tar.gz kernel-1ae7a84ed85317b12a3395470f0cfcc900b2a61a.zip | |
bpftool: Add support for custom BTF path in prog load/loadall
This patch exposes the btf_custom_path feature to bpftool, allowing users
to specify a custom BTF file when loading BPF programs using prog load or
prog loadall commands.
The argument 'btf_custom_path' in libbpf is used for those kernels that
don't have CONFIG_DEBUG_INFO_BTF enabled but still want to perform CO-RE
relocations.
Suggested-by: Quentin Monnet <[email protected]>
Reviewed-by: Quentin Monnet <[email protected]>
Signed-off-by: Jiayuan Chen <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Alexei Starovoitov <[email protected]>
Diffstat (limited to 'tools/bpf/bpftool/prog.c')
| -rw-r--r-- | tools/bpf/bpftool/prog.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/tools/bpf/bpftool/prog.c b/tools/bpf/bpftool/prog.c index f010295350be..96eea8a67225 100644 --- a/tools/bpf/bpftool/prog.c +++ b/tools/bpf/bpftool/prog.c @@ -1681,8 +1681,17 @@ offload_dev: } else if (is_prefix(*argv, "autoattach")) { auto_attach = true; NEXT_ARG(); + } else if (is_prefix(*argv, "kernel_btf")) { + NEXT_ARG(); + + if (!REQ_ARGS(1)) + goto err_free_reuse_maps; + + open_opts.btf_custom_path = GET_ARG(); } else { - p_err("expected no more arguments, 'type', 'map' or 'dev', got: '%s'?", + p_err("expected no more arguments, " + "'type', 'map', 'offload_dev', 'xdpmeta_dev', 'pinmaps', " + "'autoattach', or 'kernel_btf', got: '%s'?", *argv); goto err_free_reuse_maps; } @@ -2474,6 +2483,7 @@ static int do_help(int argc, char **argv) " [map { idx IDX | name NAME } MAP]\\\n" " [pinmaps MAP_DIR]\n" " [autoattach]\n" + " [kernel_btf BTF_FILE]\n" " %1$s %2$s attach PROG ATTACH_TYPE [MAP]\n" " %1$s %2$s detach PROG ATTACH_TYPE [MAP]\n" " %1$s %2$s run PROG \\\n" |