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 
test_trace_ext(void)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 	__u64 len;
27 	LIBBPF_OPTS(bpf_test_run_opts, topts,
28 		.data_in = &pkt_v4,
29 		.data_size_in = sizeof(pkt_v4),
30 		.repeat = 1,
31 	);
32 
33 	/* open/load/attach test_pkt_md_access */
34 	skel_pkt = test_pkt_md_access__open_and_load();
35 	if (CHECK(!skel_pkt, "setup", "classifier/test_pkt_md_access open failed\n"))
36 		goto cleanup;
37 
38 	err = test_pkt_md_access__attach(skel_pkt);
39 	if (CHECK(err, "setup", "classifier/test_pkt_md_access attach failed: %d\n", err))
40 		goto cleanup;
41 
42 	prog = skel_pkt->progs.test_pkt_md_access;
43 	pkt_fd = bpf_program__fd(prog);
44 
45 	/* open extension */
46 	skel_ext = test_trace_ext__open();
47 	if (CHECK(!skel_ext, "setup", "freplace/test_pkt_md_access open failed\n"))
48 		goto cleanup;
49 
50 	/* set extension's attach target - test_pkt_md_access  */
51 	prog = skel_ext->progs.test_pkt_md_access_new;
52 	bpf_program__set_attach_target(prog, pkt_fd, "test_pkt_md_access");
53 
54 	/* load/attach extension */
55 	err = test_trace_ext__load(skel_ext);
56 	if (CHECK(err, "setup", "freplace/test_pkt_md_access load failed\n")) {
57 		libbpf_strerror(err, buf, sizeof(buf));
58 		fprintf(stderr, "%s\n", buf);
59 		goto cleanup;
60 	}
61 
62 	err = test_trace_ext__attach(skel_ext);
63 	if (CHECK(err, "setup", "freplace/test_pkt_md_access attach failed: %d\n", err))
64 		goto cleanup;
65 
66 	prog = skel_ext->progs.test_pkt_md_access_new;
67 	ext_fd = bpf_program__fd(prog);
68 
69 	/* open tracing  */
70 	skel_trace = test_trace_ext_tracing__open();
71 	if (CHECK(!skel_trace, "setup", "tracing/test_pkt_md_access_new open failed\n"))
72 		goto cleanup;
73 
74 	/* set tracing's attach target - fentry */
75 	prog = skel_trace->progs.fentry;
76 	bpf_program__set_attach_target(prog, ext_fd, "test_pkt_md_access_new");
77 
78 	/* set tracing's attach target - fexit */
79 	prog = skel_trace->progs.fexit;
80 	bpf_program__set_attach_target(prog, ext_fd, "test_pkt_md_access_new");
81 
82 	/* load/attach tracing */
83 	err = test_trace_ext_tracing__load(skel_trace);
84 	if (!ASSERT_OK(err, "tracing/test_pkt_md_access_new load")) {
85 		libbpf_strerror(err, buf, sizeof(buf));
86 		fprintf(stderr, "%s\n", buf);
87 		goto cleanup;
88 	}
89 
90 	err = test_trace_ext_tracing__attach(skel_trace);
91 	if (!ASSERT_OK(err, "tracing/test_pkt_md_access_new attach"))
92 		goto cleanup;
93 
94 	/* trigger the test */
95 	err = bpf_prog_test_run_opts(pkt_fd, &topts);
96 	ASSERT_OK(err, "test_run_opts err");
97 	ASSERT_OK(topts.retval, "test_run_opts retval");
98 
99 	bss_ext = skel_ext->bss;
100 	bss_trace = skel_trace->bss;
101 
102 	len = bss_ext->ext_called;
103 
104 	ASSERT_NEQ(bss_ext->ext_called, 0,
105 		  "failed to trigger freplace/test_pkt_md_access");
106 	ASSERT_EQ(bss_trace->fentry_called, len,
107 		  "failed to trigger fentry/test_pkt_md_access_new");
108 	ASSERT_EQ(bss_trace->fexit_called, len,
109 		   "failed to trigger fexit/test_pkt_md_access_new");
110 
111 cleanup:
112 	test_trace_ext_tracing__destroy(skel_trace);
113 	test_trace_ext__destroy(skel_ext);
114 	test_pkt_md_access__destroy(skel_pkt);
115 }
116