1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright (c) 2022 Meta Platforms, Inc. and affiliates. */ 3 #include <test_progs.h> 4 #include <network_helpers.h> 5 #include "type_cast.skel.h" 6 7 static void test_xdp(void) 8 { 9 struct type_cast *skel; 10 int err, prog_fd; 11 char buf[128]; 12 13 LIBBPF_OPTS(bpf_test_run_opts, topts, 14 .data_in = &pkt_v4, 15 .data_size_in = sizeof(pkt_v4), 16 .data_out = buf, 17 .data_size_out = sizeof(buf), 18 .repeat = 1, 19 ); 20 21 skel = type_cast__open(); 22 if (!ASSERT_OK_PTR(skel, "skel_open")) 23 return; 24 25 bpf_program__set_autoload(skel->progs.md_xdp, true); 26 err = type_cast__load(skel); 27 if (!ASSERT_OK(err, "skel_load")) 28 goto out; 29 30 prog_fd = bpf_program__fd(skel->progs.md_xdp); 31 err = bpf_prog_test_run_opts(prog_fd, &topts); 32 ASSERT_OK(err, "test_run"); 33 ASSERT_EQ(topts.retval, XDP_PASS, "xdp test_run retval"); 34 35 ASSERT_EQ(skel->bss->ifindex, 1, "xdp_md ifindex"); 36 ASSERT_EQ(skel->bss->ifindex, skel->bss->ingress_ifindex, "xdp_md ingress_ifindex"); 37 ASSERT_STREQ(skel->bss->name, "lo", "xdp_md name"); 38 ASSERT_NEQ(skel->bss->inum, 0, "xdp_md inum"); 39 40 out: 41 type_cast__destroy(skel); 42 } 43 44 static void test_tc(void) 45 { 46 struct type_cast *skel; 47 int err, prog_fd; 48 49 LIBBPF_OPTS(bpf_test_run_opts, topts, 50 .data_in = &pkt_v4, 51 .data_size_in = sizeof(pkt_v4), 52 .repeat = 1, 53 ); 54 55 skel = type_cast__open(); 56 if (!ASSERT_OK_PTR(skel, "skel_open")) 57 return; 58 59 bpf_program__set_autoload(skel->progs.md_skb, true); 60 err = type_cast__load(skel); 61 if (!ASSERT_OK(err, "skel_load")) 62 goto out; 63 64 prog_fd = bpf_program__fd(skel->progs.md_skb); 65 err = bpf_prog_test_run_opts(prog_fd, &topts); 66 ASSERT_OK(err, "test_run"); 67 ASSERT_EQ(topts.retval, 0, "tc test_run retval"); 68 69 ASSERT_EQ(skel->bss->meta_len, 0, "skb meta_len"); 70 ASSERT_EQ(skel->bss->frag0_len, 0, "skb frag0_len"); 71 ASSERT_NEQ(skel->bss->kskb_len, 0, "skb len"); 72 ASSERT_NEQ(skel->bss->kskb2_len, 0, "skb2 len"); 73 ASSERT_EQ(skel->bss->kskb_len, skel->bss->kskb2_len, "skb len compare"); 74 75 out: 76 type_cast__destroy(skel); 77 } 78 79 static const char * const negative_tests[] = { 80 "untrusted_ptr", 81 "kctx_u64", 82 }; 83 84 static void test_negative(void) 85 { 86 struct bpf_program *prog; 87 struct type_cast *skel; 88 int i, err; 89 90 for (i = 0; i < ARRAY_SIZE(negative_tests); i++) { 91 skel = type_cast__open(); 92 if (!ASSERT_OK_PTR(skel, "skel_open")) 93 return; 94 95 prog = bpf_object__find_program_by_name(skel->obj, negative_tests[i]); 96 if (!ASSERT_OK_PTR(prog, "bpf_object__find_program_by_name")) 97 goto out; 98 bpf_program__set_autoload(prog, true); 99 err = type_cast__load(skel); 100 ASSERT_ERR(err, "skel_load"); 101 out: 102 type_cast__destroy(skel); 103 } 104 } 105 106 void test_type_cast(void) 107 { 108 if (test__start_subtest("xdp")) 109 test_xdp(); 110 if (test__start_subtest("tc")) 111 test_tc(); 112 if (test__start_subtest("negative")) 113 test_negative(); 114 } 115