1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * vsock_test - vsock.ko test suite 4 * 5 * Copyright (C) 2017 Red Hat, Inc. 6 * 7 * Author: Stefan Hajnoczi <stefanha@redhat.com> 8 */ 9 10 #include <getopt.h> 11 #include <stdio.h> 12 #include <stdlib.h> 13 #include <string.h> 14 #include <errno.h> 15 #include <unistd.h> 16 #include <linux/kernel.h> 17 #include <sys/types.h> 18 #include <sys/socket.h> 19 20 #include "timeout.h" 21 #include "control.h" 22 #include "util.h" 23 24 static void test_stream_connection_reset(const struct test_opts *opts) 25 { 26 union { 27 struct sockaddr sa; 28 struct sockaddr_vm svm; 29 } addr = { 30 .svm = { 31 .svm_family = AF_VSOCK, 32 .svm_port = 1234, 33 .svm_cid = opts->peer_cid, 34 }, 35 }; 36 int ret; 37 int fd; 38 39 fd = socket(AF_VSOCK, SOCK_STREAM, 0); 40 41 timeout_begin(TIMEOUT); 42 do { 43 ret = connect(fd, &addr.sa, sizeof(addr.svm)); 44 timeout_check("connect"); 45 } while (ret < 0 && errno == EINTR); 46 timeout_end(); 47 48 if (ret != -1) { 49 fprintf(stderr, "expected connect(2) failure, got %d\n", ret); 50 exit(EXIT_FAILURE); 51 } 52 if (errno != ECONNRESET) { 53 fprintf(stderr, "unexpected connect(2) errno %d\n", errno); 54 exit(EXIT_FAILURE); 55 } 56 57 close(fd); 58 } 59 60 static void test_stream_bind_only_client(const struct test_opts *opts) 61 { 62 union { 63 struct sockaddr sa; 64 struct sockaddr_vm svm; 65 } addr = { 66 .svm = { 67 .svm_family = AF_VSOCK, 68 .svm_port = 1234, 69 .svm_cid = opts->peer_cid, 70 }, 71 }; 72 int ret; 73 int fd; 74 75 /* Wait for the server to be ready */ 76 control_expectln("BIND"); 77 78 fd = socket(AF_VSOCK, SOCK_STREAM, 0); 79 80 timeout_begin(TIMEOUT); 81 do { 82 ret = connect(fd, &addr.sa, sizeof(addr.svm)); 83 timeout_check("connect"); 84 } while (ret < 0 && errno == EINTR); 85 timeout_end(); 86 87 if (ret != -1) { 88 fprintf(stderr, "expected connect(2) failure, got %d\n", ret); 89 exit(EXIT_FAILURE); 90 } 91 if (errno != ECONNRESET) { 92 fprintf(stderr, "unexpected connect(2) errno %d\n", errno); 93 exit(EXIT_FAILURE); 94 } 95 96 /* Notify the server that the client has finished */ 97 control_writeln("DONE"); 98 99 close(fd); 100 } 101 102 static void test_stream_bind_only_server(const struct test_opts *opts) 103 { 104 union { 105 struct sockaddr sa; 106 struct sockaddr_vm svm; 107 } addr = { 108 .svm = { 109 .svm_family = AF_VSOCK, 110 .svm_port = 1234, 111 .svm_cid = VMADDR_CID_ANY, 112 }, 113 }; 114 int fd; 115 116 fd = socket(AF_VSOCK, SOCK_STREAM, 0); 117 118 if (bind(fd, &addr.sa, sizeof(addr.svm)) < 0) { 119 perror("bind"); 120 exit(EXIT_FAILURE); 121 } 122 123 /* Notify the client that the server is ready */ 124 control_writeln("BIND"); 125 126 /* Wait for the client to finish */ 127 control_expectln("DONE"); 128 129 close(fd); 130 } 131 132 static void test_stream_client_close_client(const struct test_opts *opts) 133 { 134 int fd; 135 136 fd = vsock_stream_connect(opts->peer_cid, 1234); 137 if (fd < 0) { 138 perror("connect"); 139 exit(EXIT_FAILURE); 140 } 141 142 send_byte(fd, 1, 0); 143 close(fd); 144 } 145 146 static void test_stream_client_close_server(const struct test_opts *opts) 147 { 148 int fd; 149 150 fd = vsock_stream_accept(VMADDR_CID_ANY, 1234, NULL); 151 if (fd < 0) { 152 perror("accept"); 153 exit(EXIT_FAILURE); 154 } 155 156 /* Wait for the remote to close the connection, before check 157 * -EPIPE error on send. 158 */ 159 vsock_wait_remote_close(fd); 160 161 send_byte(fd, -EPIPE, 0); 162 recv_byte(fd, 1, 0); 163 recv_byte(fd, 0, 0); 164 close(fd); 165 } 166 167 static void test_stream_server_close_client(const struct test_opts *opts) 168 { 169 int fd; 170 171 fd = vsock_stream_connect(opts->peer_cid, 1234); 172 if (fd < 0) { 173 perror("connect"); 174 exit(EXIT_FAILURE); 175 } 176 177 /* Wait for the remote to close the connection, before check 178 * -EPIPE error on send. 179 */ 180 vsock_wait_remote_close(fd); 181 182 send_byte(fd, -EPIPE, 0); 183 recv_byte(fd, 1, 0); 184 recv_byte(fd, 0, 0); 185 close(fd); 186 } 187 188 static void test_stream_server_close_server(const struct test_opts *opts) 189 { 190 int fd; 191 192 fd = vsock_stream_accept(VMADDR_CID_ANY, 1234, NULL); 193 if (fd < 0) { 194 perror("accept"); 195 exit(EXIT_FAILURE); 196 } 197 198 send_byte(fd, 1, 0); 199 close(fd); 200 } 201 202 /* With the standard socket sizes, VMCI is able to support about 100 203 * concurrent stream connections. 204 */ 205 #define MULTICONN_NFDS 100 206 207 static void test_stream_multiconn_client(const struct test_opts *opts) 208 { 209 int fds[MULTICONN_NFDS]; 210 int i; 211 212 for (i = 0; i < MULTICONN_NFDS; i++) { 213 fds[i] = vsock_stream_connect(opts->peer_cid, 1234); 214 if (fds[i] < 0) { 215 perror("connect"); 216 exit(EXIT_FAILURE); 217 } 218 } 219 220 for (i = 0; i < MULTICONN_NFDS; i++) { 221 if (i % 2) 222 recv_byte(fds[i], 1, 0); 223 else 224 send_byte(fds[i], 1, 0); 225 } 226 227 for (i = 0; i < MULTICONN_NFDS; i++) 228 close(fds[i]); 229 } 230 231 static void test_stream_multiconn_server(const struct test_opts *opts) 232 { 233 int fds[MULTICONN_NFDS]; 234 int i; 235 236 for (i = 0; i < MULTICONN_NFDS; i++) { 237 fds[i] = vsock_stream_accept(VMADDR_CID_ANY, 1234, NULL); 238 if (fds[i] < 0) { 239 perror("accept"); 240 exit(EXIT_FAILURE); 241 } 242 } 243 244 for (i = 0; i < MULTICONN_NFDS; i++) { 245 if (i % 2) 246 send_byte(fds[i], 1, 0); 247 else 248 recv_byte(fds[i], 1, 0); 249 } 250 251 for (i = 0; i < MULTICONN_NFDS; i++) 252 close(fds[i]); 253 } 254 255 static void test_stream_msg_peek_client(const struct test_opts *opts) 256 { 257 int fd; 258 259 fd = vsock_stream_connect(opts->peer_cid, 1234); 260 if (fd < 0) { 261 perror("connect"); 262 exit(EXIT_FAILURE); 263 } 264 265 send_byte(fd, 1, 0); 266 close(fd); 267 } 268 269 static void test_stream_msg_peek_server(const struct test_opts *opts) 270 { 271 int fd; 272 273 fd = vsock_stream_accept(VMADDR_CID_ANY, 1234, NULL); 274 if (fd < 0) { 275 perror("accept"); 276 exit(EXIT_FAILURE); 277 } 278 279 recv_byte(fd, 1, MSG_PEEK); 280 recv_byte(fd, 1, 0); 281 close(fd); 282 } 283 284 #define MESSAGES_CNT 7 285 #define MSG_EOR_IDX (MESSAGES_CNT / 2) 286 static void test_seqpacket_msg_bounds_client(const struct test_opts *opts) 287 { 288 int fd; 289 290 fd = vsock_seqpacket_connect(opts->peer_cid, 1234); 291 if (fd < 0) { 292 perror("connect"); 293 exit(EXIT_FAILURE); 294 } 295 296 /* Send several messages, one with MSG_EOR flag */ 297 for (int i = 0; i < MESSAGES_CNT; i++) 298 send_byte(fd, 1, (i == MSG_EOR_IDX) ? MSG_EOR : 0); 299 300 control_writeln("SENDDONE"); 301 close(fd); 302 } 303 304 static void test_seqpacket_msg_bounds_server(const struct test_opts *opts) 305 { 306 int fd; 307 char buf[16]; 308 struct msghdr msg = {0}; 309 struct iovec iov = {0}; 310 311 fd = vsock_seqpacket_accept(VMADDR_CID_ANY, 1234, NULL); 312 if (fd < 0) { 313 perror("accept"); 314 exit(EXIT_FAILURE); 315 } 316 317 control_expectln("SENDDONE"); 318 iov.iov_base = buf; 319 iov.iov_len = sizeof(buf); 320 msg.msg_iov = &iov; 321 msg.msg_iovlen = 1; 322 323 for (int i = 0; i < MESSAGES_CNT; i++) { 324 if (recvmsg(fd, &msg, 0) != 1) { 325 perror("message bound violated"); 326 exit(EXIT_FAILURE); 327 } 328 329 if ((i == MSG_EOR_IDX) ^ !!(msg.msg_flags & MSG_EOR)) { 330 perror("MSG_EOR"); 331 exit(EXIT_FAILURE); 332 } 333 } 334 335 close(fd); 336 } 337 338 #define MESSAGE_TRUNC_SZ 32 339 static void test_seqpacket_msg_trunc_client(const struct test_opts *opts) 340 { 341 int fd; 342 char buf[MESSAGE_TRUNC_SZ]; 343 344 fd = vsock_seqpacket_connect(opts->peer_cid, 1234); 345 if (fd < 0) { 346 perror("connect"); 347 exit(EXIT_FAILURE); 348 } 349 350 if (send(fd, buf, sizeof(buf), 0) != sizeof(buf)) { 351 perror("send failed"); 352 exit(EXIT_FAILURE); 353 } 354 355 control_writeln("SENDDONE"); 356 close(fd); 357 } 358 359 static void test_seqpacket_msg_trunc_server(const struct test_opts *opts) 360 { 361 int fd; 362 char buf[MESSAGE_TRUNC_SZ / 2]; 363 struct msghdr msg = {0}; 364 struct iovec iov = {0}; 365 366 fd = vsock_seqpacket_accept(VMADDR_CID_ANY, 1234, NULL); 367 if (fd < 0) { 368 perror("accept"); 369 exit(EXIT_FAILURE); 370 } 371 372 control_expectln("SENDDONE"); 373 iov.iov_base = buf; 374 iov.iov_len = sizeof(buf); 375 msg.msg_iov = &iov; 376 msg.msg_iovlen = 1; 377 378 ssize_t ret = recvmsg(fd, &msg, MSG_TRUNC); 379 380 if (ret != MESSAGE_TRUNC_SZ) { 381 printf("%zi\n", ret); 382 perror("MSG_TRUNC doesn't work"); 383 exit(EXIT_FAILURE); 384 } 385 386 if (!(msg.msg_flags & MSG_TRUNC)) { 387 fprintf(stderr, "MSG_TRUNC expected\n"); 388 exit(EXIT_FAILURE); 389 } 390 391 close(fd); 392 } 393 394 static struct test_case test_cases[] = { 395 { 396 .name = "SOCK_STREAM connection reset", 397 .run_client = test_stream_connection_reset, 398 }, 399 { 400 .name = "SOCK_STREAM bind only", 401 .run_client = test_stream_bind_only_client, 402 .run_server = test_stream_bind_only_server, 403 }, 404 { 405 .name = "SOCK_STREAM client close", 406 .run_client = test_stream_client_close_client, 407 .run_server = test_stream_client_close_server, 408 }, 409 { 410 .name = "SOCK_STREAM server close", 411 .run_client = test_stream_server_close_client, 412 .run_server = test_stream_server_close_server, 413 }, 414 { 415 .name = "SOCK_STREAM multiple connections", 416 .run_client = test_stream_multiconn_client, 417 .run_server = test_stream_multiconn_server, 418 }, 419 { 420 .name = "SOCK_STREAM MSG_PEEK", 421 .run_client = test_stream_msg_peek_client, 422 .run_server = test_stream_msg_peek_server, 423 }, 424 { 425 .name = "SOCK_SEQPACKET msg bounds", 426 .run_client = test_seqpacket_msg_bounds_client, 427 .run_server = test_seqpacket_msg_bounds_server, 428 }, 429 { 430 .name = "SOCK_SEQPACKET MSG_TRUNC flag", 431 .run_client = test_seqpacket_msg_trunc_client, 432 .run_server = test_seqpacket_msg_trunc_server, 433 }, 434 {}, 435 }; 436 437 static const char optstring[] = ""; 438 static const struct option longopts[] = { 439 { 440 .name = "control-host", 441 .has_arg = required_argument, 442 .val = 'H', 443 }, 444 { 445 .name = "control-port", 446 .has_arg = required_argument, 447 .val = 'P', 448 }, 449 { 450 .name = "mode", 451 .has_arg = required_argument, 452 .val = 'm', 453 }, 454 { 455 .name = "peer-cid", 456 .has_arg = required_argument, 457 .val = 'p', 458 }, 459 { 460 .name = "list", 461 .has_arg = no_argument, 462 .val = 'l', 463 }, 464 { 465 .name = "skip", 466 .has_arg = required_argument, 467 .val = 's', 468 }, 469 { 470 .name = "help", 471 .has_arg = no_argument, 472 .val = '?', 473 }, 474 {}, 475 }; 476 477 static void usage(void) 478 { 479 fprintf(stderr, "Usage: vsock_test [--help] [--control-host=<host>] --control-port=<port> --mode=client|server --peer-cid=<cid> [--list] [--skip=<test_id>]\n" 480 "\n" 481 " Server: vsock_test --control-port=1234 --mode=server --peer-cid=3\n" 482 " Client: vsock_test --control-host=192.168.0.1 --control-port=1234 --mode=client --peer-cid=2\n" 483 "\n" 484 "Run vsock.ko tests. Must be launched in both guest\n" 485 "and host. One side must use --mode=client and\n" 486 "the other side must use --mode=server.\n" 487 "\n" 488 "A TCP control socket connection is used to coordinate tests\n" 489 "between the client and the server. The server requires a\n" 490 "listen address and the client requires an address to\n" 491 "connect to.\n" 492 "\n" 493 "The CID of the other side must be given with --peer-cid=<cid>.\n" 494 "\n" 495 "Options:\n" 496 " --help This help message\n" 497 " --control-host <host> Server IP address to connect to\n" 498 " --control-port <port> Server port to listen on/connect to\n" 499 " --mode client|server Server or client mode\n" 500 " --peer-cid <cid> CID of the other side\n" 501 " --list List of tests that will be executed\n" 502 " --skip <test_id> Test ID to skip;\n" 503 " use multiple --skip options to skip more tests\n" 504 ); 505 exit(EXIT_FAILURE); 506 } 507 508 int main(int argc, char **argv) 509 { 510 const char *control_host = NULL; 511 const char *control_port = NULL; 512 struct test_opts opts = { 513 .mode = TEST_MODE_UNSET, 514 .peer_cid = VMADDR_CID_ANY, 515 }; 516 517 init_signals(); 518 519 for (;;) { 520 int opt = getopt_long(argc, argv, optstring, longopts, NULL); 521 522 if (opt == -1) 523 break; 524 525 switch (opt) { 526 case 'H': 527 control_host = optarg; 528 break; 529 case 'm': 530 if (strcmp(optarg, "client") == 0) 531 opts.mode = TEST_MODE_CLIENT; 532 else if (strcmp(optarg, "server") == 0) 533 opts.mode = TEST_MODE_SERVER; 534 else { 535 fprintf(stderr, "--mode must be \"client\" or \"server\"\n"); 536 return EXIT_FAILURE; 537 } 538 break; 539 case 'p': 540 opts.peer_cid = parse_cid(optarg); 541 break; 542 case 'P': 543 control_port = optarg; 544 break; 545 case 'l': 546 list_tests(test_cases); 547 break; 548 case 's': 549 skip_test(test_cases, ARRAY_SIZE(test_cases) - 1, 550 optarg); 551 break; 552 case '?': 553 default: 554 usage(); 555 } 556 } 557 558 if (!control_port) 559 usage(); 560 if (opts.mode == TEST_MODE_UNSET) 561 usage(); 562 if (opts.peer_cid == VMADDR_CID_ANY) 563 usage(); 564 565 if (!control_host) { 566 if (opts.mode != TEST_MODE_SERVER) 567 usage(); 568 control_host = "0.0.0.0"; 569 } 570 571 control_init(control_host, control_port, 572 opts.mode == TEST_MODE_SERVER); 573 574 run_tests(test_cases, &opts); 575 576 control_cleanup(); 577 return EXIT_SUCCESS; 578 } 579