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