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 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