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libbpf: Support test run of raw tracepoint programs

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Add bpf_prog_test_run_opts() with support of new fields in bpf_attr.test,
namely, flags and cpu. Also extend _opts operations to support outputs via
opts.

Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/20200925205432.1777-3-songliubraving@fb.com
This commit is contained in:
Song Liu
2020-09-25 13:54:30 -07:00
committed by Andrii Nakryiko
parent b6f1385458
commit b2e50daea8
4 changed files with 63 additions and 0 deletions
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31
src/bpf.c
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@@ -712,6 +712,37 @@ int bpf_prog_test_run_xattr(struct bpf_prog_test_run_attr *test_attr)
return ret;
}
int bpf_prog_test_run_opts(int prog_fd, struct bpf_test_run_opts *opts)
{
union bpf_attr attr;
int ret;
if (!OPTS_VALID(opts, bpf_test_run_opts))
return -EINVAL;
memset(&attr, 0, sizeof(attr));
attr.test.prog_fd = prog_fd;
attr.test.cpu = OPTS_GET(opts, cpu, 0);
attr.test.flags = OPTS_GET(opts, flags, 0);
attr.test.repeat = OPTS_GET(opts, repeat, 0);
attr.test.duration = OPTS_GET(opts, duration, 0);
attr.test.ctx_size_in = OPTS_GET(opts, ctx_size_in, 0);
attr.test.ctx_size_out = OPTS_GET(opts, ctx_size_out, 0);
attr.test.data_size_in = OPTS_GET(opts, data_size_in, 0);
attr.test.data_size_out = OPTS_GET(opts, data_size_out, 0);
attr.test.ctx_in = ptr_to_u64(OPTS_GET(opts, ctx_in, NULL));
attr.test.ctx_out = ptr_to_u64(OPTS_GET(opts, ctx_out, NULL));
attr.test.data_in = ptr_to_u64(OPTS_GET(opts, data_in, NULL));
attr.test.data_out = ptr_to_u64(OPTS_GET(opts, data_out, NULL));
ret = sys_bpf(BPF_PROG_TEST_RUN, &attr, sizeof(attr));
OPTS_SET(opts, data_size_out, attr.test.data_size_out);
OPTS_SET(opts, ctx_size_out, attr.test.ctx_size_out);
OPTS_SET(opts, duration, attr.test.duration);
OPTS_SET(opts, retval, attr.test.retval);
return ret;
}
static int bpf_obj_get_next_id(__u32 start_id, __u32 *next_id, int cmd)
{
union bpf_attr attr;