1/* SPDX-License-Identifier: GPL-2.0 */
 2/* Copyright (c) 2023 Isovalent */
 3#ifndef TC_HELPERS
 4#define TC_HELPERS
 5#include <test_progs.h>
 6
 7#ifndef loopback
 8# define loopback 1
 9#endif
10
11static inline __u32 id_from_prog_fd(int fd)
12{
13	struct bpf_prog_info prog_info = {};
14	__u32 prog_info_len = sizeof(prog_info);
15	int err;
16
17	err = bpf_obj_get_info_by_fd(fd, &prog_info, &prog_info_len);
18	if (!ASSERT_OK(err, "id_from_prog_fd"))
19		return 0;
20
21	ASSERT_NEQ(prog_info.id, 0, "prog_info.id");
22	return prog_info.id;
23}
24
25static inline __u32 id_from_link_fd(int fd)
26{
27	struct bpf_link_info link_info = {};
28	__u32 link_info_len = sizeof(link_info);
29	int err;
30
31	err = bpf_link_get_info_by_fd(fd, &link_info, &link_info_len);
32	if (!ASSERT_OK(err, "id_from_link_fd"))
33		return 0;
34
35	ASSERT_NEQ(link_info.id, 0, "link_info.id");
36	return link_info.id;
37}
38
39static inline __u32 ifindex_from_link_fd(int fd)
40{
41	struct bpf_link_info link_info = {};
42	__u32 link_info_len = sizeof(link_info);
43	int err;
44
45	err = bpf_link_get_info_by_fd(fd, &link_info, &link_info_len);
46	if (!ASSERT_OK(err, "id_from_link_fd"))
47		return 0;
48
49	return link_info.tcx.ifindex;
50}
51
52static inline void __assert_mprog_count(int target, int expected, int ifindex)
53{
54	__u32 count = 0, attach_flags = 0;
55	int err;
56
57	err = bpf_prog_query(ifindex, target, 0, &attach_flags,
58			     NULL, &count);
59	ASSERT_EQ(count, expected, "count");
60	ASSERT_EQ(err, 0, "prog_query");
61}
62
63static inline void assert_mprog_count(int target, int expected)
64{
65	__assert_mprog_count(target, expected, loopback);
66}
67
68static inline void assert_mprog_count_ifindex(int ifindex, int target, int expected)
69{
70	__assert_mprog_count(target, expected, ifindex);
71}
72
73static inline void tc_skel_reset_all_seen(struct test_tc_link *skel)
74{
75	memset(skel->bss, 0, sizeof(*skel->bss));
76}
77
78#endif /* TC_HELPERS */