21 	if (CHECK(!skel1, "skel_load", "skeleton open and load failed\n"))  in test_xdp_link()
26 	if (CHECK(!skel2, "skel_load", "skeleton open and load failed\n"))  in test_xdp_link()
32 	if (CHECK(err, "fd_info1", "failed %d\n", -errno))  in test_xdp_link()
38 	if (CHECK(err, "fd_info2", "failed %d\n", -errno))  in test_xdp_link()
44 	if (CHECK(err, "fd_attach", "initial prog attach failed: %d\n", err))  in test_xdp_link()
49 	CHECK(err || id0 != id1, "id1_check",  in test_xdp_link()
54 	if (CHECK(!IS_ERR(link), "link_attach_fail", "unexpected success\n")) {  in test_xdp_link()
65 	if (CHECK(err, "prog_detach", "failed %d\n", err))  in test_xdp_link()
70 	if (CHECK(IS_ERR(link), "link_attach", "failed: %ld\n", PTR_ERR(link)))  in test_xdp_link()
76 	if (CHECK(err || id0 != id1, "id1_check",  in test_xdp_link()
83 	if (CHECK(!err, "prog_attach_fail", "unexpected success\n"))  in test_xdp_link()
88 	if (CHECK(!err, "prog_update_fail", "unexpected success\n"))  in test_xdp_link()
93 	if (CHECK(!err, "prog_detach_fail", "unexpected success\n"))  in test_xdp_link()
98 	if (CHECK(!IS_ERR(link), "link_attach_fail", "unexpected success\n")) {  in test_xdp_link()
108 	if (CHECK(IS_ERR(link), "link_attach", "failed: %ld\n", PTR_ERR(link)))  in test_xdp_link()
113 	if (CHECK(err || id0 != id2, "id2_check",  in test_xdp_link()
119 	if (CHECK(err, "link_upd", "failed: %d\n", err))  in test_xdp_link()
124 	if (CHECK(err, "link_info", "failed: %d\n", err))  in test_xdp_link()
127 	CHECK(link_info.type != BPF_LINK_TYPE_XDP, "link_type",  in test_xdp_link()
129 	CHECK(link_info.prog_id != id1, "link_prog_id",  in test_xdp_link()
131 	CHECK(link_info.xdp.ifindex != IFINDEX_LO, "link_ifindex",  in test_xdp_link()
135 	if (CHECK(err, "link_detach", "failed %d\n", err))  in test_xdp_link()
140 	if (CHECK(err, "link_info", "failed: %d\n", err))  in test_xdp_link()
142 	CHECK(link_info.prog_id != id1, "link_prog_id",  in test_xdp_link()
145 	CHECK(link_info.xdp.ifindex != 0, "link_ifindex",  in test_xdp_link()