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 #include "../kselftest.h" 22 23 struct options { 24 int so_timestamp; 25 int so_timestampns; 26 int so_timestamping; 27 }; 28 29 struct tstamps { 30 bool tstamp; 31 bool tstampns; 32 bool swtstamp; 33 bool hwtstamp; 34 }; 35 36 struct socket_type { 37 char *friendly_name; 38 int type; 39 int protocol; 40 bool enabled; 41 }; 42 43 struct test_case { 44 struct options sockopt; 45 struct tstamps expected; 46 bool enabled; 47 bool warn_on_fail; 48 }; 49 50 struct sof_flag { 51 int mask; 52 char *name; 53 }; 54 55 static struct sof_flag sof_flags[] = { 56 #define SOF_FLAG(f) { f, #f } 57 SOF_FLAG(SOF_TIMESTAMPING_SOFTWARE), 58 SOF_FLAG(SOF_TIMESTAMPING_RX_SOFTWARE), 59 SOF_FLAG(SOF_TIMESTAMPING_RX_HARDWARE), 60 }; 61 62 static struct socket_type socket_types[] = { 63 { "ip", SOCK_RAW, IPPROTO_EGP }, 64 { "udp", SOCK_DGRAM, IPPROTO_UDP }, 65 { "tcp", SOCK_STREAM, IPPROTO_TCP }, 66 }; 67 68 static struct test_case test_cases[] = { 69 { {}, {} }, 70 { 71 { .so_timestamp = 1 }, 72 { .tstamp = true } 73 }, 74 { 75 { .so_timestampns = 1 }, 76 { .tstampns = true } 77 }, 78 { 79 { .so_timestamp = 1, .so_timestampns = 1 }, 80 { .tstampns = true } 81 }, 82 { 83 { .so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE }, 84 {} 85 }, 86 { 87 /* Loopback device does not support hw timestamps. */ 88 { .so_timestamping = SOF_TIMESTAMPING_RX_HARDWARE }, 89 {} 90 }, 91 { 92 { .so_timestamping = SOF_TIMESTAMPING_SOFTWARE }, 93 .warn_on_fail = true 94 }, 95 { 96 { .so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE 97 | SOF_TIMESTAMPING_RX_HARDWARE }, 98 {} 99 }, 100 { 101 { .so_timestamping = SOF_TIMESTAMPING_SOFTWARE 102 | SOF_TIMESTAMPING_RX_SOFTWARE }, 103 { .swtstamp = true } 104 }, 105 { 106 { .so_timestamp = 1, .so_timestamping = SOF_TIMESTAMPING_SOFTWARE 107 | SOF_TIMESTAMPING_RX_SOFTWARE }, 108 { .tstamp = true, .swtstamp = true } 109 }, 110 }; 111 112 static struct option long_options[] = { 113 { "list_tests", no_argument, 0, 'l' }, 114 { "test_num", required_argument, 0, 'n' }, 115 { "op_size", required_argument, 0, 's' }, 116 { "tcp", no_argument, 0, 't' }, 117 { "udp", no_argument, 0, 'u' }, 118 { "ip", no_argument, 0, 'i' }, 119 { "strict", no_argument, 0, 'S' }, 120 { "ipv4", no_argument, 0, '4' }, 121 { "ipv6", no_argument, 0, '6' }, 122 { NULL, 0, NULL, 0 }, 123 }; 124 125 static int next_port = 19999; 126 static int op_size = 10 * 1024; 127 128 void print_test_case(struct test_case *t) 129 { 130 int f = 0; 131 132 printf("sockopts {"); 133 if (t->sockopt.so_timestamp) 134 printf(" SO_TIMESTAMP "); 135 if (t->sockopt.so_timestampns) 136 printf(" SO_TIMESTAMPNS "); 137 if (t->sockopt.so_timestamping) { 138 printf(" SO_TIMESTAMPING: {"); 139 for (f = 0; f < ARRAY_SIZE(sof_flags); f++) 140 if (t->sockopt.so_timestamping & sof_flags[f].mask) 141 printf(" %s |", sof_flags[f].name); 142 printf("}"); 143 } 144 printf("} expected cmsgs: {"); 145 if (t->expected.tstamp) 146 printf(" SCM_TIMESTAMP "); 147 if (t->expected.tstampns) 148 printf(" SCM_TIMESTAMPNS "); 149 if (t->expected.swtstamp || t->expected.hwtstamp) { 150 printf(" SCM_TIMESTAMPING {"); 151 if (t->expected.swtstamp) 152 printf("0"); 153 if (t->expected.swtstamp && t->expected.hwtstamp) 154 printf(","); 155 if (t->expected.hwtstamp) 156 printf("2"); 157 printf("}"); 158 } 159 printf("}\n"); 160 } 161 162 void do_send(int src) 163 { 164 int r; 165 char *buf = malloc(op_size); 166 167 memset(buf, 'z', op_size); 168 r = write(src, buf, op_size); 169 if (r < 0) 170 error(1, errno, "Failed to sendmsg"); 171 172 free(buf); 173 } 174 175 bool do_recv(int rcv, int read_size, struct tstamps expected) 176 { 177 const int CMSG_SIZE = 1024; 178 179 struct scm_timestamping *ts; 180 struct tstamps actual = {}; 181 char cmsg_buf[CMSG_SIZE]; 182 struct iovec recv_iov; 183 struct cmsghdr *cmsg; 184 bool failed = false; 185 struct msghdr hdr; 186 int flags = 0; 187 int r; 188 189 memset(&hdr, 0, sizeof(hdr)); 190 hdr.msg_iov = &recv_iov; 191 hdr.msg_iovlen = 1; 192 recv_iov.iov_base = malloc(read_size); 193 recv_iov.iov_len = read_size; 194 195 hdr.msg_control = cmsg_buf; 196 hdr.msg_controllen = sizeof(cmsg_buf); 197 198 r = recvmsg(rcv, &hdr, flags); 199 if (r < 0) 200 error(1, errno, "Failed to recvmsg"); 201 if (r != read_size) 202 error(1, 0, "Only received %d bytes of payload.", r); 203 204 if (hdr.msg_flags & (MSG_TRUNC | MSG_CTRUNC)) 205 error(1, 0, "Message was truncated."); 206 207 for (cmsg = CMSG_FIRSTHDR(&hdr); cmsg != NULL; 208 cmsg = CMSG_NXTHDR(&hdr, cmsg)) { 209 if (cmsg->cmsg_level != SOL_SOCKET) 210 error(1, 0, "Unexpected cmsg_level %d", 211 cmsg->cmsg_level); 212 switch (cmsg->cmsg_type) { 213 case SCM_TIMESTAMP: 214 actual.tstamp = true; 215 break; 216 case SCM_TIMESTAMPNS: 217 actual.tstampns = true; 218 break; 219 case SCM_TIMESTAMPING: 220 ts = (struct scm_timestamping *)CMSG_DATA(cmsg); 221 actual.swtstamp = !!ts->ts[0].tv_sec; 222 if (ts->ts[1].tv_sec != 0) 223 error(0, 0, "ts[1] should not be set."); 224 actual.hwtstamp = !!ts->ts[2].tv_sec; 225 break; 226 default: 227 error(1, 0, "Unexpected cmsg_type %d", cmsg->cmsg_type); 228 } 229 } 230 231 #define VALIDATE(field) \ 232 do { \ 233 if (expected.field != actual.field) { \ 234 if (expected.field) \ 235 error(0, 0, "Expected " #field " to be set."); \ 236 else \ 237 error(0, 0, \ 238 "Expected " #field " to not be set."); \ 239 failed = true; \ 240 } \ 241 } while (0) 242 243 VALIDATE(tstamp); 244 VALIDATE(tstampns); 245 VALIDATE(swtstamp); 246 VALIDATE(hwtstamp); 247 #undef VALIDATE 248 249 free(recv_iov.iov_base); 250 251 return failed; 252 } 253 254 void config_so_flags(int rcv, struct options o) 255 { 256 int on = 1; 257 258 if (setsockopt(rcv, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)) < 0) 259 error(1, errno, "Failed to enable SO_REUSEADDR"); 260 261 if (o.so_timestamp && 262 setsockopt(rcv, SOL_SOCKET, SO_TIMESTAMP, 263 &o.so_timestamp, sizeof(o.so_timestamp)) < 0) 264 error(1, errno, "Failed to enable SO_TIMESTAMP"); 265 266 if (o.so_timestampns && 267 setsockopt(rcv, SOL_SOCKET, SO_TIMESTAMPNS, 268 &o.so_timestampns, sizeof(o.so_timestampns)) < 0) 269 error(1, errno, "Failed to enable SO_TIMESTAMPNS"); 270 271 if (o.so_timestamping && 272 setsockopt(rcv, SOL_SOCKET, SO_TIMESTAMPING, 273 &o.so_timestamping, sizeof(o.so_timestamping)) < 0) 274 error(1, errno, "Failed to set SO_TIMESTAMPING"); 275 } 276 277 bool run_test_case(struct socket_type *s, int test_num, char ip_version, 278 bool strict) 279 { 280 union { 281 struct sockaddr_in6 addr6; 282 struct sockaddr_in addr4; 283 struct sockaddr addr_un; 284 } addr; 285 int read_size = op_size; 286 int src, dst, rcv, port; 287 socklen_t addr_size; 288 bool failed = false; 289 290 port = (s->type == SOCK_RAW) ? 0 : next_port++; 291 memset(&addr, 0, sizeof(addr)); 292 if (ip_version == '4') { 293 addr.addr4.sin_family = AF_INET; 294 addr.addr4.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 295 addr.addr4.sin_port = htons(port); 296 addr_size = sizeof(addr.addr4); 297 if (s->type == SOCK_RAW) 298 read_size += 20; /* for IPv4 header */ 299 } else { 300 addr.addr6.sin6_family = AF_INET6; 301 addr.addr6.sin6_addr = in6addr_loopback; 302 addr.addr6.sin6_port = htons(port); 303 addr_size = sizeof(addr.addr6); 304 } 305 printf("Starting testcase %d over ipv%c...\n", test_num, ip_version); 306 src = socket(addr.addr_un.sa_family, s->type, 307 s->protocol); 308 if (src < 0) 309 error(1, errno, "Failed to open src socket"); 310 311 dst = socket(addr.addr_un.sa_family, s->type, 312 s->protocol); 313 if (dst < 0) 314 error(1, errno, "Failed to open dst socket"); 315 316 if (bind(dst, &addr.addr_un, addr_size) < 0) 317 error(1, errno, "Failed to bind to port %d", port); 318 319 if (s->type == SOCK_STREAM && (listen(dst, 1) < 0)) 320 error(1, errno, "Failed to listen"); 321 322 if (connect(src, &addr.addr_un, addr_size) < 0) 323 error(1, errno, "Failed to connect"); 324 325 if (s->type == SOCK_STREAM) { 326 rcv = accept(dst, NULL, NULL); 327 if (rcv < 0) 328 error(1, errno, "Failed to accept"); 329 close(dst); 330 } else { 331 rcv = dst; 332 } 333 334 config_so_flags(rcv, test_cases[test_num].sockopt); 335 usleep(20000); /* setsockopt for SO_TIMESTAMPING is asynchronous */ 336 do_send(src); 337 338 failed = do_recv(rcv, read_size, test_cases[test_num].expected); 339 340 close(rcv); 341 close(src); 342 343 if (failed) { 344 printf("FAILURE in testcase %d over ipv%c ", test_num, 345 ip_version); 346 print_test_case(&test_cases[test_num]); 347 if (!strict && test_cases[test_num].warn_on_fail) 348 failed = false; 349 } 350 return failed; 351 } 352 353 int main(int argc, char **argv) 354 { 355 bool all_protocols = true; 356 bool all_tests = true; 357 bool cfg_ipv4 = false; 358 bool cfg_ipv6 = false; 359 bool strict = false; 360 int arg_index = 0; 361 int failures = 0; 362 int s, t, opt; 363 364 while ((opt = getopt_long(argc, argv, "", long_options, 365 &arg_index)) != -1) { 366 switch (opt) { 367 case 'l': 368 for (t = 0; t < ARRAY_SIZE(test_cases); t++) { 369 printf("%d\t", t); 370 print_test_case(&test_cases[t]); 371 } 372 return 0; 373 case 'n': 374 t = atoi(optarg); 375 if (t >= ARRAY_SIZE(test_cases)) 376 error(1, 0, "Invalid test case: %d", t); 377 all_tests = false; 378 test_cases[t].enabled = true; 379 break; 380 case 's': 381 op_size = atoi(optarg); 382 break; 383 case 't': 384 all_protocols = false; 385 socket_types[2].enabled = true; 386 break; 387 case 'u': 388 all_protocols = false; 389 socket_types[1].enabled = true; 390 break; 391 case 'i': 392 all_protocols = false; 393 socket_types[0].enabled = true; 394 break; 395 case 'S': 396 strict = true; 397 break; 398 case '4': 399 cfg_ipv4 = true; 400 break; 401 case '6': 402 cfg_ipv6 = true; 403 break; 404 default: 405 error(1, 0, "Failed to parse parameters."); 406 } 407 } 408 409 for (s = 0; s < ARRAY_SIZE(socket_types); s++) { 410 if (!all_protocols && !socket_types[s].enabled) 411 continue; 412 413 printf("Testing %s...\n", socket_types[s].friendly_name); 414 for (t = 0; t < ARRAY_SIZE(test_cases); t++) { 415 if (!all_tests && !test_cases[t].enabled) 416 continue; 417 if (cfg_ipv4 || !cfg_ipv6) 418 if (run_test_case(&socket_types[s], t, '4', 419 strict)) 420 failures++; 421 if (cfg_ipv6 || !cfg_ipv4) 422 if (run_test_case(&socket_types[s], t, '6', 423 strict)) 424 failures++; 425 } 426 } 427 if (!failures) 428 printf("PASSED.\n"); 429 return failures; 430 } 431