77 lines · c
1// SPDX-License-Identifier: GPL-2.02#include <linux/if_link.h>3#include <test_progs.h>4 5#define IFINDEX_LO 16 7void 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");72out:73 bpf_xdp_detach(IFINDEX_LO, 0, NULL);74out_close:75 bpf_object__close(obj);76}77