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libbpf: add support for ctx_{size, }_{in, out} in BPF_PROG_TEST_RUN

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Support recently introduced input/output context for test runs.
We extend only bpf_prog_test_run_xattr. bpf_prog_test_run is
unextendable and left as is.

Signed-off-by: Stanislav Fomichev <[email protected]>
Acked-by: Martin KaFai Lau <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
This commit is contained in:
Stanislav Fomichev 2019-04-09 11:49:10 -07:00 • committed by Daniel Borkmann
commit 5e903c656b
3 changed files with 17 additions and 0 deletions
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5
tools/lib/bpf/bpf.c
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@ -554,10 +554,15 @@ int bpf_prog_test_run_xattr(struct bpf_prog_test_run_attr *test_attr)
attr.test.data_out = ptr_to_u64(test_attr->data_out);
attr.test.data_size_in = test_attr->data_size_in;
attr.test.data_size_out = test_attr->data_size_out;
attr.test.ctx_in = ptr_to_u64(test_attr->ctx_in);
attr.test.ctx_out = ptr_to_u64(test_attr->ctx_out);
attr.test.ctx_size_in = test_attr->ctx_size_in;
attr.test.ctx_size_out = test_attr->ctx_size_out;
attr.test.repeat = test_attr->repeat;
ret = sys_bpf(BPF_PROG_TEST_RUN, &attr, sizeof(attr));
test_attr->data_size_out = attr.test.data_size_out;
test_attr->ctx_size_out = attr.test.ctx_size_out;
test_attr->retval = attr.test.retval;
test_attr->duration = attr.test.duration;
return ret;

5
tools/lib/bpf/bpf.h
View file

@ -136,6 +136,11 @@ struct bpf_prog_test_run_attr {
* out: length of data_out */
__u32 retval; /* out: return code of the BPF program */
__u32 duration; /* out: average per repetition in ns */
const void *ctx_in; /* optional */
__u32 ctx_size_in;
void *ctx_out; /* optional */
__u32 ctx_size_out; /* in: max length of ctx_out
* out: length of cxt_out */
};
LIBBPF_API int bpf_prog_test_run_xattr(struct bpf_prog_test_run_attr *test_attr);