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selftests/bpf: Add tests for bpf_dynptr_copy

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Add XDP setup type for dynptr tests, enabling testing for
non-contiguous buffer.
Add 2 tests:
 - test_dynptr_copy - verify correctness for the fast (contiguous
 buffer) code path.
 - test_dynptr_copy_xdp - verifies code paths that handle
 non-contiguous buffer.

Signed-off-by: Mykyta Yatsenko <yatsenko@meta.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20250226183201.332713-4-mykyta.yatsenko5@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Mykyta Yatsenko
2025-02-26 18:32:01 +00:00
committed by Alexei Starovoitov
parent daec295a70
commit 064e9aacfd
2 changed files with 139 additions and 5 deletions
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21
tools/testing/selftests/bpf/prog_tests/dynptr.c
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@@ -10,6 +10,7 @@ enum test_setup_type {
SETUP_SYSCALL_SLEEP,
SETUP_SKB_PROG,
SETUP_SKB_PROG_TP,
SETUP_XDP_PROG,
};
static struct {
@@ -18,6 +19,8 @@ static struct {
} success_tests[] = {
{"test_read_write", SETUP_SYSCALL_SLEEP},
{"test_dynptr_data", SETUP_SYSCALL_SLEEP},
{"test_dynptr_copy", SETUP_SYSCALL_SLEEP},
{"test_dynptr_copy_xdp", SETUP_XDP_PROG},
{"test_ringbuf", SETUP_SYSCALL_SLEEP},
{"test_skb_readonly", SETUP_SKB_PROG},
{"test_dynptr_skb_data", SETUP_SKB_PROG},
@@ -120,6 +123,24 @@ static void verify_success(const char *prog_name, enum test_setup_type setup_typ
break;
}
case SETUP_XDP_PROG:
{
char data[5000];
int err, prog_fd;
LIBBPF_OPTS(bpf_test_run_opts, opts,
.data_in = &data,
.data_size_in = sizeof(data),
.repeat = 1,
);
prog_fd = bpf_program__fd(prog);
err = bpf_prog_test_run_opts(prog_fd, &opts);
if (!ASSERT_OK(err, "test_run"))
goto cleanup;
break;
}
}
ASSERT_EQ(skel->bss->err, 0, "err");