1// SPDX-License-Identifier: GPL-2.0
 2#include <test_progs.h>
 3#include <network_helpers.h>
 4
 5#include "test_pkt_access.skel.h"
 6
 7static const __u32 duration;
 8
 9static void check_run_cnt(int prog_fd, __u64 run_cnt)
10{
11	struct bpf_prog_info info = {};
12	__u32 info_len = sizeof(info);
13	int err;
14
15	err = bpf_obj_get_info_by_fd(prog_fd, &info, &info_len);
16	if (CHECK(err, "get_prog_info", "failed to get bpf_prog_info for fd %d\n", prog_fd))
17		return;
18
19	CHECK(run_cnt != info.run_cnt, "run_cnt",
20	      "incorrect number of repetitions, want %llu have %llu\n", run_cnt, info.run_cnt);
21}
22
23void test_prog_run_xattr(void)
24{
25	struct test_pkt_access *skel;
26	int err, stats_fd = -1;
27	char buf[10] = {};
28	__u64 run_cnt = 0;
29
30	struct bpf_prog_test_run_attr tattr = {
31		.repeat = 1,
32		.data_in = &pkt_v4,
33		.data_size_in = sizeof(pkt_v4),
34		.data_out = buf,
35		.data_size_out = 5,
36	};
37
38	stats_fd = bpf_enable_stats(BPF_STATS_RUN_TIME);
39	if (CHECK_ATTR(stats_fd < 0, "enable_stats", "failed %d\n", errno))
40		return;
41
42	skel = test_pkt_access__open_and_load();
43	if (CHECK_ATTR(!skel, "open_and_load", "failed\n"))
44		goto cleanup;
45
46	tattr.prog_fd = bpf_program__fd(skel->progs.test_pkt_access);
47
48	err = bpf_prog_test_run_xattr(&tattr);
49	CHECK_ATTR(err >= 0 || errno != ENOSPC || tattr.retval, "run",
50	      "err %d errno %d retval %d\n", err, errno, tattr.retval);
51
52	CHECK_ATTR(tattr.data_size_out != sizeof(pkt_v4), "data_size_out",
53	      "incorrect output size, want %zu have %u\n",
54	      sizeof(pkt_v4), tattr.data_size_out);
55
56	CHECK_ATTR(buf[5] != 0, "overflow",
57	      "BPF_PROG_TEST_RUN ignored size hint\n");
58
59	run_cnt += tattr.repeat;
60	check_run_cnt(tattr.prog_fd, run_cnt);
61
62	tattr.data_out = NULL;
63	tattr.data_size_out = 0;
64	tattr.repeat = 2;
65	errno = 0;
66
67	err = bpf_prog_test_run_xattr(&tattr);
68	CHECK_ATTR(err || errno || tattr.retval, "run_no_output",
69	      "err %d errno %d retval %d\n", err, errno, tattr.retval);
70
71	tattr.data_size_out = 1;
72	err = bpf_prog_test_run_xattr(&tattr);
73	CHECK_ATTR(err != -EINVAL, "run_wrong_size_out", "err %d\n", err);
74
75	run_cnt += tattr.repeat;
76	check_run_cnt(tattr.prog_fd, run_cnt);
77
78cleanup:
79	if (skel)
80		test_pkt_access__destroy(skel);
81	if (stats_fd >= 0)
82		close(stats_fd);
83}