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 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