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
serial_test_xdp_info(void)7 void serial_test_xdp_info(void)
8 {
9 __u32 len = sizeof(struct bpf_prog_info), duration = 0, prog_id;
10 const char *file = "./xdp_dummy.bpf.o";
11 LIBBPF_OPTS(bpf_xdp_query_opts, opts);
12 struct bpf_prog_info info = {};
13 struct bpf_object *obj;
14 int err, prog_fd;
15
16 /* Get prog_id for XDP_ATTACHED_NONE mode */
17
18 err = bpf_xdp_query_id(IFINDEX_LO, 0, &prog_id);
19 if (CHECK(err, "get_xdp_none", "errno=%d\n", errno))
20 return;
21 if (CHECK(prog_id, "prog_id_none", "unexpected prog_id=%u\n", prog_id))
22 return;
23
24 err = bpf_xdp_query_id(IFINDEX_LO, XDP_FLAGS_SKB_MODE, &prog_id);
25 if (CHECK(err, "get_xdp_none_skb", "errno=%d\n", errno))
26 return;
27 if (CHECK(prog_id, "prog_id_none_skb", "unexpected prog_id=%u\n",
28 prog_id))
29 return;
30
31 /* Setup prog */
32
33 err = bpf_prog_test_load(file, BPF_PROG_TYPE_XDP, &obj, &prog_fd);
34 if (CHECK_FAIL(err))
35 return;
36
37 err = bpf_prog_get_info_by_fd(prog_fd, &info, &len);
38 if (CHECK(err, "get_prog_info", "errno=%d\n", errno))
39 goto out_close;
40
41 err = bpf_xdp_attach(IFINDEX_LO, prog_fd, XDP_FLAGS_SKB_MODE, NULL);
42 if (CHECK(err, "set_xdp_skb", "errno=%d\n", errno))
43 goto out_close;
44
45 /* Get prog_id for single prog mode */
46
47 err = bpf_xdp_query_id(IFINDEX_LO, 0, &prog_id);
48 if (CHECK(err, "get_xdp", "errno=%d\n", errno))
49 goto out;
50 if (CHECK(prog_id != info.id, "prog_id", "prog_id not available\n"))
51 goto out;
52
53 err = bpf_xdp_query_id(IFINDEX_LO, XDP_FLAGS_SKB_MODE, &prog_id);
54 if (CHECK(err, "get_xdp_skb", "errno=%d\n", errno))
55 goto out;
56 if (CHECK(prog_id != info.id, "prog_id_skb", "prog_id not available\n"))
57 goto out;
58
59 err = bpf_xdp_query_id(IFINDEX_LO, XDP_FLAGS_DRV_MODE, &prog_id);
60 if (CHECK(err, "get_xdp_drv", "errno=%d\n", errno))
61 goto out;
62 if (CHECK(prog_id, "prog_id_drv", "unexpected prog_id=%u\n", prog_id))
63 goto out;
64
65 /* Check xdp features supported by lo device */
66 opts.feature_flags = ~0;
67 err = bpf_xdp_query(IFINDEX_LO, XDP_FLAGS_DRV_MODE, &opts);
68 if (!ASSERT_OK(err, "bpf_xdp_query"))
69 goto out;
70
71 ASSERT_EQ(opts.feature_flags, 0, "opts.feature_flags");
72 out:
73 bpf_xdp_detach(IFINDEX_LO, 0, NULL);
74 out_close:
75 bpf_object__close(obj);
76 }
77
