1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright (c) 2019 Facebook */ 3 #include <test_progs.h> 4 5 #define PROG_CNT 3 6 7 void test_fexit_bpf2bpf(void) 8 { 9 const char *prog_name[PROG_CNT] = { 10 "fexit/test_pkt_access", 11 "fexit/test_pkt_access_subprog1", 12 "fexit/test_pkt_access_subprog2", 13 }; 14 struct bpf_object *obj = NULL, *pkt_obj; 15 int err, pkt_fd, i; 16 struct bpf_link *link[PROG_CNT] = {}; 17 struct bpf_program *prog[PROG_CNT]; 18 __u32 duration, retval; 19 struct bpf_map *data_map; 20 const int zero = 0; 21 u64 result[PROG_CNT]; 22 23 err = bpf_prog_load("./test_pkt_access.o", BPF_PROG_TYPE_UNSPEC, 24 &pkt_obj, &pkt_fd); 25 if (CHECK(err, "prog_load sched cls", "err %d errno %d\n", err, errno)) 26 return; 27 DECLARE_LIBBPF_OPTS(bpf_object_open_opts, opts, 28 .attach_prog_fd = pkt_fd, 29 ); 30 31 obj = bpf_object__open_file("./fexit_bpf2bpf.o", &opts); 32 if (CHECK(IS_ERR_OR_NULL(obj), "obj_open", 33 "failed to open fexit_bpf2bpf: %ld\n", 34 PTR_ERR(obj))) 35 goto close_prog; 36 37 err = bpf_object__load(obj); 38 if (CHECK(err, "obj_load", "err %d\n", err)) 39 goto close_prog; 40 41 for (i = 0; i < PROG_CNT; i++) { 42 prog[i] = bpf_object__find_program_by_title(obj, prog_name[i]); 43 if (CHECK(!prog[i], "find_prog", "prog %s not found\n", prog_name[i])) 44 goto close_prog; 45 link[i] = bpf_program__attach_trace(prog[i]); 46 if (CHECK(IS_ERR(link[i]), "attach_trace", "failed to link\n")) 47 goto close_prog; 48 } 49 data_map = bpf_object__find_map_by_name(obj, "fexit_bp.bss"); 50 if (CHECK(!data_map, "find_data_map", "data map not found\n")) 51 goto close_prog; 52 53 err = bpf_prog_test_run(pkt_fd, 1, &pkt_v6, sizeof(pkt_v6), 54 NULL, NULL, &retval, &duration); 55 CHECK(err || retval, "ipv6", 56 "err %d errno %d retval %d duration %d\n", 57 err, errno, retval, duration); 58 59 err = bpf_map_lookup_elem(bpf_map__fd(data_map), &zero, &result); 60 if (CHECK(err, "get_result", 61 "failed to get output data: %d\n", err)) 62 goto close_prog; 63 64 for (i = 0; i < PROG_CNT; i++) 65 if (CHECK(result[i] != 1, "result", "fexit_bpf2bpf failed err %ld\n", 66 result[i])) 67 goto close_prog; 68 69 close_prog: 70 for (i = 0; i < PROG_CNT; i++) 71 if (!IS_ERR_OR_NULL(link[i])) 72 bpf_link__destroy(link[i]); 73 if (!IS_ERR_OR_NULL(obj)) 74 bpf_object__close(obj); 75 bpf_object__close(pkt_obj); 76 } 77