1#include <errno.h>
2#include <error.h>
3#include <getopt.h>
4#include <stdbool.h>
5#include <stdio.h>
6#include <stdlib.h>
7#include <string.h>
8#include <unistd.h>
9
10#include <sys/time.h>
11#include <sys/socket.h>
12#include <sys/select.h>
13#include <sys/ioctl.h>
14#include <arpa/inet.h>
15#include <net/if.h>
16
17#include <asm/types.h>
18#include <linux/net_tstamp.h>
19#include <linux/errqueue.h>
20
21#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
22
23struct options {
24 int so_timestamp;
25 int so_timestampns;
26 int so_timestamping;
27};
28
29struct tstamps {
30 bool tstamp;
31 bool tstampns;
32 bool swtstamp;
33 bool hwtstamp;
34};
35
36struct socket_type {
37 char *friendly_name;
38 int type;
39 int protocol;
40 bool enabled;
41};
42
43struct test_case {
44 struct options sockopt;
45 struct tstamps expected;
46 bool enabled;
47};
48
49struct sof_flag {
50 int mask;
51 char *name;
52};
53
54static struct sof_flag sof_flags[] = {
55#define SOF_FLAG(f) { f, #f }
56 SOF_FLAG(SOF_TIMESTAMPING_SOFTWARE),
57 SOF_FLAG(SOF_TIMESTAMPING_RX_SOFTWARE),
58 SOF_FLAG(SOF_TIMESTAMPING_RX_HARDWARE),
59};
60
61static struct socket_type socket_types[] = {
62 { "ip", SOCK_RAW, IPPROTO_EGP },
63 { "udp", SOCK_DGRAM, IPPROTO_UDP },
64 { "tcp", SOCK_STREAM, IPPROTO_TCP },
65};
66
67static struct test_case test_cases[] = {
68 { {}, {} },
69 {
70 { so_timestamp: 1 },
71 { tstamp: true }
72 },
73 {
74 { so_timestampns: 1 },
75 { tstampns: true }
76 },
77 {
78 { so_timestamp: 1, so_timestampns: 1 },
79 { tstampns: true }
80 },
81 {
82 { so_timestamping: SOF_TIMESTAMPING_RX_SOFTWARE },
83 {}
84 },
85 {
86
87 { so_timestamping: SOF_TIMESTAMPING_RX_HARDWARE },
88 {}
89 },
90 {
91 { so_timestamping: SOF_TIMESTAMPING_SOFTWARE },
92 {}
93 },
94 {
95 { so_timestamping: SOF_TIMESTAMPING_RX_SOFTWARE
96 | SOF_TIMESTAMPING_RX_HARDWARE },
97 {}
98 },
99 {
100 { so_timestamping: SOF_TIMESTAMPING_SOFTWARE
101 | SOF_TIMESTAMPING_RX_SOFTWARE },
102 { swtstamp: true }
103 },
104 {
105 { so_timestamp: 1, so_timestamping: SOF_TIMESTAMPING_SOFTWARE
106 | SOF_TIMESTAMPING_RX_SOFTWARE },
107 { tstamp: true, swtstamp: true }
108 },
109};
110
111static struct option long_options[] = {
112 { "list_tests", no_argument, 0, 'l' },
113 { "test_num", required_argument, 0, 'n' },
114 { "op_size", required_argument, 0, 's' },
115 { "tcp", no_argument, 0, 't' },
116 { "udp", no_argument, 0, 'u' },
117 { "ip", no_argument, 0, 'i' },
118};
119
120static int next_port = 19999;
121static int op_size = 10 * 1024;
122
123void print_test_case(struct test_case *t)
124{
125 int f = 0;
126
127 printf("sockopts {");
128 if (t->sockopt.so_timestamp)
129 printf(" SO_TIMESTAMP ");
130 if (t->sockopt.so_timestampns)
131 printf(" SO_TIMESTAMPNS ");
132 if (t->sockopt.so_timestamping) {
133 printf(" SO_TIMESTAMPING: {");
134 for (f = 0; f < ARRAY_SIZE(sof_flags); f++)
135 if (t->sockopt.so_timestamping & sof_flags[f].mask)
136 printf(" %s |", sof_flags[f].name);
137 printf("}");
138 }
139 printf("} expected cmsgs: {");
140 if (t->expected.tstamp)
141 printf(" SCM_TIMESTAMP ");
142 if (t->expected.tstampns)
143 printf(" SCM_TIMESTAMPNS ");
144 if (t->expected.swtstamp || t->expected.hwtstamp) {
145 printf(" SCM_TIMESTAMPING {");
146 if (t->expected.swtstamp)
147 printf("0");
148 if (t->expected.swtstamp && t->expected.hwtstamp)
149 printf(",");
150 if (t->expected.hwtstamp)
151 printf("2");
152 printf("}");
153 }
154 printf("}\n");
155}
156
157void do_send(int src)
158{
159 int r;
160 char *buf = malloc(op_size);
161
162 memset(buf, 'z', op_size);
163 r = write(src, buf, op_size);
164 if (r < 0)
165 error(1, errno, "Failed to sendmsg");
166
167 free(buf);
168}
169
170bool do_recv(int rcv, int read_size, struct tstamps expected)
171{
172 const int CMSG_SIZE = 1024;
173
174 struct scm_timestamping *ts;
175 struct tstamps actual = {};
176 char cmsg_buf[CMSG_SIZE];
177 struct iovec recv_iov;
178 struct cmsghdr *cmsg;
179 bool failed = false;
180 struct msghdr hdr;
181 int flags = 0;
182 int r;
183
184 memset(&hdr, 0, sizeof(hdr));
185 hdr.msg_iov = &recv_iov;
186 hdr.msg_iovlen = 1;
187 recv_iov.iov_base = malloc(read_size);
188 recv_iov.iov_len = read_size;
189
190 hdr.msg_control = cmsg_buf;
191 hdr.msg_controllen = sizeof(cmsg_buf);
192
193 r = recvmsg(rcv, &hdr, flags);
194 if (r < 0)
195 error(1, errno, "Failed to recvmsg");
196 if (r != read_size)
197 error(1, 0, "Only received %d bytes of payload.", r);
198
199 if (hdr.msg_flags & (MSG_TRUNC | MSG_CTRUNC))
200 error(1, 0, "Message was truncated.");
201
202 for (cmsg = CMSG_FIRSTHDR(&hdr); cmsg != NULL;
203 cmsg = CMSG_NXTHDR(&hdr, cmsg)) {
204 if (cmsg->cmsg_level != SOL_SOCKET)
205 error(1, 0, "Unexpected cmsg_level %d",
206 cmsg->cmsg_level);
207 switch (cmsg->cmsg_type) {
208 case SCM_TIMESTAMP:
209 actual.tstamp = true;
210 break;
211 case SCM_TIMESTAMPNS:
212 actual.tstampns = true;
213 break;
214 case SCM_TIMESTAMPING:
215 ts = (struct scm_timestamping *)CMSG_DATA(cmsg);
216 actual.swtstamp = !!ts->ts[0].tv_sec;
217 if (ts->ts[1].tv_sec != 0)
218 error(0, 0, "ts[1] should not be set.");
219 actual.hwtstamp = !!ts->ts[2].tv_sec;
220 break;
221 default:
222 error(1, 0, "Unexpected cmsg_type %d", cmsg->cmsg_type);
223 }
224 }
225
226#define VALIDATE(field) \
227 do { \
228 if (expected.field != actual.field) { \
229 if (expected.field) \
230 error(0, 0, "Expected " #field " to be set."); \
231 else \
232 error(0, 0, \
233 "Expected " #field " to not be set."); \
234 failed = true; \
235 } \
236 } while (0)
237
238 VALIDATE(tstamp);
239 VALIDATE(tstampns);
240 VALIDATE(swtstamp);
241 VALIDATE(hwtstamp);
242#undef VALIDATE
243
244 free(recv_iov.iov_base);
245
246 return failed;
247}
248
249void config_so_flags(int rcv, struct options o)
250{
251 int on = 1;
252
253 if (setsockopt(rcv, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)) < 0)
254 error(1, errno, "Failed to enable SO_REUSEADDR");
255
256 if (o.so_timestamp &&
257 setsockopt(rcv, SOL_SOCKET, SO_TIMESTAMP,
258 &o.so_timestamp, sizeof(o.so_timestamp)) < 0)
259 error(1, errno, "Failed to enable SO_TIMESTAMP");
260
261 if (o.so_timestampns &&
262 setsockopt(rcv, SOL_SOCKET, SO_TIMESTAMPNS,
263 &o.so_timestampns, sizeof(o.so_timestampns)) < 0)
264 error(1, errno, "Failed to enable SO_TIMESTAMPNS");
265
266 if (o.so_timestamping &&
267 setsockopt(rcv, SOL_SOCKET, SO_TIMESTAMPING,
268 &o.so_timestamping, sizeof(o.so_timestamping)) < 0)
269 error(1, errno, "Failed to set SO_TIMESTAMPING");
270}
271
272bool run_test_case(struct socket_type s, struct test_case t)
273{
274 int port = (s.type == SOCK_RAW) ? 0 : next_port++;
275 int read_size = op_size;
276 struct sockaddr_in addr;
277 bool failed = false;
278 int src, dst, rcv;
279
280 src = socket(AF_INET, s.type, s.protocol);
281 if (src < 0)
282 error(1, errno, "Failed to open src socket");
283
284 dst = socket(AF_INET, s.type, s.protocol);
285 if (dst < 0)
286 error(1, errno, "Failed to open dst socket");
287
288 memset(&addr, 0, sizeof(addr));
289 addr.sin_family = AF_INET;
290 addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
291 addr.sin_port = htons(port);
292
293 if (bind(dst, (struct sockaddr *)&addr, sizeof(addr)) < 0)
294 error(1, errno, "Failed to bind to port %d", port);
295
296 if (s.type == SOCK_STREAM && (listen(dst, 1) < 0))
297 error(1, errno, "Failed to listen");
298
299 if (connect(src, (struct sockaddr *)&addr, sizeof(addr)) < 0)
300 error(1, errno, "Failed to connect");
301
302 if (s.type == SOCK_STREAM) {
303 rcv = accept(dst, NULL, NULL);
304 if (rcv < 0)
305 error(1, errno, "Failed to accept");
306 close(dst);
307 } else {
308 rcv = dst;
309 }
310
311 config_so_flags(rcv, t.sockopt);
312 usleep(20000);
313 do_send(src);
314
315 if (s.type == SOCK_RAW)
316 read_size += 20;
317 failed = do_recv(rcv, read_size, t.expected);
318
319 close(rcv);
320 close(src);
321
322 return failed;
323}
324
325int main(int argc, char **argv)
326{
327 bool all_protocols = true;
328 bool all_tests = true;
329 int arg_index = 0;
330 int failures = 0;
331 int s, t;
332 char opt;
333
334 while ((opt = getopt_long(argc, argv, "", long_options,
335 &arg_index)) != -1) {
336 switch (opt) {
337 case 'l':
338 for (t = 0; t < ARRAY_SIZE(test_cases); t++) {
339 printf("%d\t", t);
340 print_test_case(&test_cases[t]);
341 }
342 return 0;
343 case 'n':
344 t = atoi(optarg);
345 if (t >= ARRAY_SIZE(test_cases))
346 error(1, 0, "Invalid test case: %d", t);
347 all_tests = false;
348 test_cases[t].enabled = true;
349 break;
350 case 's':
351 op_size = atoi(optarg);
352 break;
353 case 't':
354 all_protocols = false;
355 socket_types[2].enabled = true;
356 break;
357 case 'u':
358 all_protocols = false;
359 socket_types[1].enabled = true;
360 break;
361 case 'i':
362 all_protocols = false;
363 socket_types[0].enabled = true;
364 break;
365 default:
366 error(1, 0, "Failed to parse parameters.");
367 }
368 }
369
370 for (s = 0; s < ARRAY_SIZE(socket_types); s++) {
371 if (!all_protocols && !socket_types[s].enabled)
372 continue;
373
374 printf("Testing %s...\n", socket_types[s].friendly_name);
375 for (t = 0; t < ARRAY_SIZE(test_cases); t++) {
376 if (!all_tests && !test_cases[t].enabled)
377 continue;
378
379 printf("Starting testcase %d...\n", t);
380 if (run_test_case(socket_types[s], test_cases[t])) {
381 failures++;
382 printf("FAILURE in test case ");
383 print_test_case(&test_cases[t]);
384 }
385 }
386 }
387 if (!failures)
388 printf("PASSED.\n");
389 return failures;
390}
391
