1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/if_link.h>
3 #include <test_progs.h>
4
5 #define IFINDEX_LO 1
6
test_xdp_info(void)7 void test_xdp_info(void)
8 {
9 __u32 len = sizeof(struct bpf_prog_info), duration = 0, prog_id;
10 const char *file = "./xdp_dummy.o";
11 struct bpf_prog_info info = {};
12 struct bpf_object *obj;
13 int err, prog_fd;
14
15 /* Get prog_id for XDP_ATTACHED_NONE mode */
16
17 err = bpf_get_link_xdp_id(IFINDEX_LO, &prog_id, 0);
18 if (CHECK(err, "get_xdp_none", "errno=%d\n", errno))
19 return;
20 if (CHECK(prog_id, "prog_id_none", "unexpected prog_id=%u\n", prog_id))
21 return;
22
23 err = bpf_get_link_xdp_id(IFINDEX_LO, &prog_id, XDP_FLAGS_SKB_MODE);
24 if (CHECK(err, "get_xdp_none_skb", "errno=%d\n", errno))
25 return;
26 if (CHECK(prog_id, "prog_id_none_skb", "unexpected prog_id=%u\n",
27 prog_id))
28 return;
29
30 /* Setup prog */
31
32 err = bpf_prog_load(file, BPF_PROG_TYPE_XDP, &obj, &prog_fd);
33 if (CHECK_FAIL(err))
34 return;
35
36 err = bpf_obj_get_info_by_fd(prog_fd, &info, &len);
37 if (CHECK(err, "get_prog_info", "errno=%d\n", errno))
38 goto out_close;
39
40 err = bpf_set_link_xdp_fd(IFINDEX_LO, prog_fd, XDP_FLAGS_SKB_MODE);
41 if (CHECK(err, "set_xdp_skb", "errno=%d\n", errno))
42 goto out_close;
43
44 /* Get prog_id for single prog mode */
45
46 err = bpf_get_link_xdp_id(IFINDEX_LO, &prog_id, 0);
47 if (CHECK(err, "get_xdp", "errno=%d\n", errno))
48 goto out;
49 if (CHECK(prog_id != info.id, "prog_id", "prog_id not available\n"))
50 goto out;
51
52 err = bpf_get_link_xdp_id(IFINDEX_LO, &prog_id, XDP_FLAGS_SKB_MODE);
53 if (CHECK(err, "get_xdp_skb", "errno=%d\n", errno))
54 goto out;
55 if (CHECK(prog_id != info.id, "prog_id_skb", "prog_id not available\n"))
56 goto out;
57
58 err = bpf_get_link_xdp_id(IFINDEX_LO, &prog_id, XDP_FLAGS_DRV_MODE);
59 if (CHECK(err, "get_xdp_drv", "errno=%d\n", errno))
60 goto out;
61 if (CHECK(prog_id, "prog_id_drv", "unexpected prog_id=%u\n", prog_id))
62 goto out;
63
64 out:
65 bpf_set_link_xdp_fd(IFINDEX_LO, -1, 0);
66 out_close:
67 bpf_object__close(obj);
68 }
69