1 // SPDX-License-Identifier: GPL-2.0 2 3 #define _GNU_SOURCE 4 #include <test_progs.h> 5 #include <network_helpers.h> 6 #include <sys/stat.h> 7 #include <linux/sched.h> 8 #include <sys/syscall.h> 9 10 #include "test_pkt_md_access.skel.h" 11 #include "test_trace_ext.skel.h" 12 #include "test_trace_ext_tracing.skel.h" 13 14 static __u32 duration; 15 16 void test_trace_ext(void) 17 { 18 struct test_pkt_md_access *skel_pkt = NULL; 19 struct test_trace_ext_tracing *skel_trace = NULL; 20 struct test_trace_ext_tracing__bss *bss_trace; 21 struct test_trace_ext *skel_ext = NULL; 22 struct test_trace_ext__bss *bss_ext; 23 int err, pkt_fd, ext_fd; 24 struct bpf_program *prog; 25 char buf[100]; 26 __u32 retval; 27 __u64 len; 28 29 /* open/load/attach test_pkt_md_access */ 30 skel_pkt = test_pkt_md_access__open_and_load(); 31 if (CHECK(!skel_pkt, "setup", "classifier/test_pkt_md_access open failed\n")) 32 goto cleanup; 33 34 err = test_pkt_md_access__attach(skel_pkt); 35 if (CHECK(err, "setup", "classifier/test_pkt_md_access attach failed: %d\n", err)) 36 goto cleanup; 37 38 prog = skel_pkt->progs.test_pkt_md_access; 39 pkt_fd = bpf_program__fd(prog); 40 41 /* open extension */ 42 skel_ext = test_trace_ext__open(); 43 if (CHECK(!skel_ext, "setup", "freplace/test_pkt_md_access open failed\n")) 44 goto cleanup; 45 46 /* set extension's attach target - test_pkt_md_access */ 47 prog = skel_ext->progs.test_pkt_md_access_new; 48 bpf_program__set_attach_target(prog, pkt_fd, "test_pkt_md_access"); 49 50 /* load/attach extension */ 51 err = test_trace_ext__load(skel_ext); 52 if (CHECK(err, "setup", "freplace/test_pkt_md_access load failed\n")) { 53 libbpf_strerror(err, buf, sizeof(buf)); 54 fprintf(stderr, "%s\n", buf); 55 goto cleanup; 56 } 57 58 err = test_trace_ext__attach(skel_ext); 59 if (CHECK(err, "setup", "freplace/test_pkt_md_access attach failed: %d\n", err)) 60 goto cleanup; 61 62 prog = skel_ext->progs.test_pkt_md_access_new; 63 ext_fd = bpf_program__fd(prog); 64 65 /* open tracing */ 66 skel_trace = test_trace_ext_tracing__open(); 67 if (CHECK(!skel_trace, "setup", "tracing/test_pkt_md_access_new open failed\n")) 68 goto cleanup; 69 70 /* set tracing's attach target - fentry */ 71 prog = skel_trace->progs.fentry; 72 bpf_program__set_attach_target(prog, ext_fd, "test_pkt_md_access_new"); 73 74 /* set tracing's attach target - fexit */ 75 prog = skel_trace->progs.fexit; 76 bpf_program__set_attach_target(prog, ext_fd, "test_pkt_md_access_new"); 77 78 /* load/attach tracing */ 79 err = test_trace_ext_tracing__load(skel_trace); 80 if (CHECK(err, "setup", "tracing/test_pkt_md_access_new load failed\n")) { 81 libbpf_strerror(err, buf, sizeof(buf)); 82 fprintf(stderr, "%s\n", buf); 83 goto cleanup; 84 } 85 86 err = test_trace_ext_tracing__attach(skel_trace); 87 if (CHECK(err, "setup", "tracing/test_pkt_md_access_new attach failed: %d\n", err)) 88 goto cleanup; 89 90 /* trigger the test */ 91 err = bpf_prog_test_run(pkt_fd, 1, &pkt_v4, sizeof(pkt_v4), 92 NULL, NULL, &retval, &duration); 93 CHECK(err || retval, "run", "err %d errno %d retval %d\n", err, errno, retval); 94 95 bss_ext = skel_ext->bss; 96 bss_trace = skel_trace->bss; 97 98 len = bss_ext->ext_called; 99 100 CHECK(bss_ext->ext_called == 0, 101 "check", "failed to trigger freplace/test_pkt_md_access\n"); 102 CHECK(bss_trace->fentry_called != len, 103 "check", "failed to trigger fentry/test_pkt_md_access_new\n"); 104 CHECK(bss_trace->fexit_called != len, 105 "check", "failed to trigger fexit/test_pkt_md_access_new\n"); 106 107 cleanup: 108 test_trace_ext_tracing__destroy(skel_trace); 109 test_trace_ext__destroy(skel_ext); 110 test_pkt_md_access__destroy(skel_pkt); 111 } 112