1 /* 2 * QTest testcase for the vhost-user 3 * 4 * Copyright (c) 2014 Virtual Open Systems Sarl. 5 * 6 * This work is licensed under the terms of the GNU GPL, version 2 or later. 7 * See the COPYING file in the top-level directory. 8 * 9 */ 10 11 #include "qemu/osdep.h" 12 13 #include "libqtest-single.h" 14 #include "qapi/error.h" 15 #include "qapi/qmp/qdict.h" 16 #include "qemu/config-file.h" 17 #include "qemu/option.h" 18 #include "qemu/range.h" 19 #include "qemu/sockets.h" 20 #include "chardev/char-fe.h" 21 #include "qemu/memfd.h" 22 #include "qemu/module.h" 23 #include "sysemu/sysemu.h" 24 #include "libqos/libqos.h" 25 #include "libqos/pci-pc.h" 26 #include "libqos/virtio-pci.h" 27 28 #include "libqos/malloc-pc.h" 29 #include "hw/virtio/virtio-net.h" 30 31 #include "standard-headers/linux/vhost_types.h" 32 #include "standard-headers/linux/virtio_ids.h" 33 #include "standard-headers/linux/virtio_net.h" 34 35 #ifdef CONFIG_LINUX 36 #include <sys/vfs.h> 37 #endif 38 39 40 #define QEMU_CMD_MEM " -m %d -object memory-backend-file,id=mem,size=%dM," \ 41 "mem-path=%s,share=on -numa node,memdev=mem" 42 #define QEMU_CMD_MEMFD " -m %d -object memory-backend-memfd,id=mem,size=%dM," \ 43 " -numa node,memdev=mem" 44 #define QEMU_CMD_CHR " -chardev socket,id=%s,path=%s%s" 45 #define QEMU_CMD_NETDEV " -netdev vhost-user,id=hs0,chardev=%s,vhostforce=on" 46 47 #define HUGETLBFS_MAGIC 0x958458f6 48 49 /*********** FROM hw/virtio/vhost-user.c *************************************/ 50 51 #define VHOST_MEMORY_MAX_NREGIONS 8 52 #define VHOST_MAX_VIRTQUEUES 0x100 53 54 #define VHOST_USER_F_PROTOCOL_FEATURES 30 55 #define VHOST_USER_PROTOCOL_F_MQ 0 56 #define VHOST_USER_PROTOCOL_F_LOG_SHMFD 1 57 #define VHOST_USER_PROTOCOL_F_CROSS_ENDIAN 6 58 59 #define VHOST_LOG_PAGE 0x1000 60 61 typedef enum VhostUserRequest { 62 VHOST_USER_NONE = 0, 63 VHOST_USER_GET_FEATURES = 1, 64 VHOST_USER_SET_FEATURES = 2, 65 VHOST_USER_SET_OWNER = 3, 66 VHOST_USER_RESET_OWNER = 4, 67 VHOST_USER_SET_MEM_TABLE = 5, 68 VHOST_USER_SET_LOG_BASE = 6, 69 VHOST_USER_SET_LOG_FD = 7, 70 VHOST_USER_SET_VRING_NUM = 8, 71 VHOST_USER_SET_VRING_ADDR = 9, 72 VHOST_USER_SET_VRING_BASE = 10, 73 VHOST_USER_GET_VRING_BASE = 11, 74 VHOST_USER_SET_VRING_KICK = 12, 75 VHOST_USER_SET_VRING_CALL = 13, 76 VHOST_USER_SET_VRING_ERR = 14, 77 VHOST_USER_GET_PROTOCOL_FEATURES = 15, 78 VHOST_USER_SET_PROTOCOL_FEATURES = 16, 79 VHOST_USER_GET_QUEUE_NUM = 17, 80 VHOST_USER_SET_VRING_ENABLE = 18, 81 VHOST_USER_MAX 82 } VhostUserRequest; 83 84 typedef struct VhostUserMemoryRegion { 85 uint64_t guest_phys_addr; 86 uint64_t memory_size; 87 uint64_t userspace_addr; 88 uint64_t mmap_offset; 89 } VhostUserMemoryRegion; 90 91 typedef struct VhostUserMemory { 92 uint32_t nregions; 93 uint32_t padding; 94 VhostUserMemoryRegion regions[VHOST_MEMORY_MAX_NREGIONS]; 95 } VhostUserMemory; 96 97 typedef struct VhostUserLog { 98 uint64_t mmap_size; 99 uint64_t mmap_offset; 100 } VhostUserLog; 101 102 typedef struct VhostUserMsg { 103 VhostUserRequest request; 104 105 #define VHOST_USER_VERSION_MASK (0x3) 106 #define VHOST_USER_REPLY_MASK (0x1<<2) 107 uint32_t flags; 108 uint32_t size; /* the following payload size */ 109 union { 110 #define VHOST_USER_VRING_IDX_MASK (0xff) 111 #define VHOST_USER_VRING_NOFD_MASK (0x1<<8) 112 uint64_t u64; 113 struct vhost_vring_state state; 114 struct vhost_vring_addr addr; 115 VhostUserMemory memory; 116 VhostUserLog log; 117 } payload; 118 } QEMU_PACKED VhostUserMsg; 119 120 static VhostUserMsg m __attribute__ ((unused)); 121 #define VHOST_USER_HDR_SIZE (sizeof(m.request) \ 122 + sizeof(m.flags) \ 123 + sizeof(m.size)) 124 125 #define VHOST_USER_PAYLOAD_SIZE (sizeof(m) - VHOST_USER_HDR_SIZE) 126 127 /* The version of the protocol we support */ 128 #define VHOST_USER_VERSION (0x1) 129 /*****************************************************************************/ 130 131 enum { 132 TEST_FLAGS_OK, 133 TEST_FLAGS_DISCONNECT, 134 TEST_FLAGS_BAD, 135 TEST_FLAGS_END, 136 }; 137 138 enum { 139 VHOST_USER_NET, 140 }; 141 142 typedef struct TestServer { 143 gchar *socket_path; 144 gchar *mig_path; 145 gchar *chr_name; 146 gchar *tmpfs; 147 CharBackend chr; 148 int fds_num; 149 int fds[VHOST_MEMORY_MAX_NREGIONS]; 150 VhostUserMemory memory; 151 GMainContext *context; 152 GMainLoop *loop; 153 GThread *thread; 154 GMutex data_mutex; 155 GCond data_cond; 156 int log_fd; 157 uint64_t rings; 158 bool test_fail; 159 int test_flags; 160 int queues; 161 struct vhost_user_ops *vu_ops; 162 } TestServer; 163 164 struct vhost_user_ops { 165 /* Device types. */ 166 int type; 167 void (*append_opts)(TestServer *s, GString *cmd_line, 168 const char *chr_opts); 169 170 /* VHOST-USER commands. */ 171 void (*set_features)(TestServer *s, CharBackend *chr, 172 VhostUserMsg *msg); 173 void (*get_protocol_features)(TestServer *s, 174 CharBackend *chr, VhostUserMsg *msg); 175 }; 176 177 static const char *init_hugepagefs(void); 178 static TestServer *test_server_new(const gchar *name, 179 struct vhost_user_ops *ops); 180 static void test_server_free(TestServer *server); 181 static void test_server_listen(TestServer *server); 182 183 enum test_memfd { 184 TEST_MEMFD_AUTO, 185 TEST_MEMFD_YES, 186 TEST_MEMFD_NO, 187 }; 188 189 static void append_vhost_net_opts(TestServer *s, GString *cmd_line, 190 const char *chr_opts) 191 { 192 g_string_append_printf(cmd_line, QEMU_CMD_CHR QEMU_CMD_NETDEV, 193 s->chr_name, s->socket_path, 194 chr_opts, s->chr_name); 195 } 196 197 static void append_mem_opts(TestServer *server, GString *cmd_line, 198 int size, enum test_memfd memfd) 199 { 200 if (memfd == TEST_MEMFD_AUTO) { 201 memfd = qemu_memfd_check(MFD_ALLOW_SEALING) ? TEST_MEMFD_YES 202 : TEST_MEMFD_NO; 203 } 204 205 if (memfd == TEST_MEMFD_YES) { 206 g_string_append_printf(cmd_line, QEMU_CMD_MEMFD, size, size); 207 } else { 208 const char *root = init_hugepagefs() ? : server->tmpfs; 209 210 g_string_append_printf(cmd_line, QEMU_CMD_MEM, size, size, root); 211 } 212 } 213 214 static bool wait_for_fds(TestServer *s) 215 { 216 gint64 end_time; 217 bool got_region; 218 int i; 219 220 g_mutex_lock(&s->data_mutex); 221 222 end_time = g_get_monotonic_time() + 5 * G_TIME_SPAN_SECOND; 223 while (!s->fds_num) { 224 if (!g_cond_wait_until(&s->data_cond, &s->data_mutex, end_time)) { 225 /* timeout has passed */ 226 g_assert(s->fds_num); 227 break; 228 } 229 } 230 231 /* check for sanity */ 232 g_assert_cmpint(s->fds_num, >, 0); 233 g_assert_cmpint(s->fds_num, ==, s->memory.nregions); 234 235 g_mutex_unlock(&s->data_mutex); 236 237 got_region = false; 238 for (i = 0; i < s->memory.nregions; ++i) { 239 VhostUserMemoryRegion *reg = &s->memory.regions[i]; 240 if (reg->guest_phys_addr == 0) { 241 got_region = true; 242 break; 243 } 244 } 245 if (!got_region) { 246 g_test_skip("No memory at address 0x0"); 247 } 248 return got_region; 249 } 250 251 static void read_guest_mem_server(QTestState *qts, TestServer *s) 252 { 253 uint8_t *guest_mem; 254 int i, j; 255 size_t size; 256 257 g_mutex_lock(&s->data_mutex); 258 259 /* iterate all regions */ 260 for (i = 0; i < s->fds_num; i++) { 261 262 /* We'll check only the region statring at 0x0*/ 263 if (s->memory.regions[i].guest_phys_addr != 0x0) { 264 continue; 265 } 266 267 g_assert_cmpint(s->memory.regions[i].memory_size, >, 1024); 268 269 size = s->memory.regions[i].memory_size + 270 s->memory.regions[i].mmap_offset; 271 272 guest_mem = mmap(0, size, PROT_READ | PROT_WRITE, 273 MAP_SHARED, s->fds[i], 0); 274 275 g_assert(guest_mem != MAP_FAILED); 276 guest_mem += (s->memory.regions[i].mmap_offset / sizeof(*guest_mem)); 277 278 for (j = 0; j < 1024; j++) { 279 uint32_t a = qtest_readb(qts, s->memory.regions[i].guest_phys_addr + j); 280 uint32_t b = guest_mem[j]; 281 282 g_assert_cmpint(a, ==, b); 283 } 284 285 munmap(guest_mem, s->memory.regions[i].memory_size); 286 } 287 288 g_mutex_unlock(&s->data_mutex); 289 } 290 291 static void *thread_function(void *data) 292 { 293 GMainLoop *loop = data; 294 g_main_loop_run(loop); 295 return NULL; 296 } 297 298 static int chr_can_read(void *opaque) 299 { 300 return VHOST_USER_HDR_SIZE; 301 } 302 303 static void chr_read(void *opaque, const uint8_t *buf, int size) 304 { 305 g_autoptr(GError) err = NULL; 306 TestServer *s = opaque; 307 CharBackend *chr = &s->chr; 308 VhostUserMsg msg; 309 uint8_t *p = (uint8_t *) &msg; 310 int fd = -1; 311 312 if (s->test_fail) { 313 qemu_chr_fe_disconnect(chr); 314 /* now switch to non-failure */ 315 s->test_fail = false; 316 } 317 318 if (size != VHOST_USER_HDR_SIZE) { 319 g_test_message("Wrong message size received %d", size); 320 return; 321 } 322 323 g_mutex_lock(&s->data_mutex); 324 memcpy(p, buf, VHOST_USER_HDR_SIZE); 325 326 if (msg.size) { 327 p += VHOST_USER_HDR_SIZE; 328 size = qemu_chr_fe_read_all(chr, p, msg.size); 329 if (size != msg.size) { 330 g_test_message("Wrong message size received %d != %d", 331 size, msg.size); 332 return; 333 } 334 } 335 336 switch (msg.request) { 337 case VHOST_USER_GET_FEATURES: 338 /* send back features to qemu */ 339 msg.flags |= VHOST_USER_REPLY_MASK; 340 msg.size = sizeof(m.payload.u64); 341 msg.payload.u64 = 0x1ULL << VHOST_F_LOG_ALL | 342 0x1ULL << VHOST_USER_F_PROTOCOL_FEATURES; 343 if (s->queues > 1) { 344 msg.payload.u64 |= 0x1ULL << VIRTIO_NET_F_MQ; 345 } 346 if (s->test_flags >= TEST_FLAGS_BAD) { 347 msg.payload.u64 = 0; 348 s->test_flags = TEST_FLAGS_END; 349 } 350 p = (uint8_t *) &msg; 351 qemu_chr_fe_write_all(chr, p, VHOST_USER_HDR_SIZE + msg.size); 352 break; 353 354 case VHOST_USER_SET_FEATURES: 355 if (s->vu_ops->set_features) { 356 s->vu_ops->set_features(s, chr, &msg); 357 } 358 break; 359 360 case VHOST_USER_GET_PROTOCOL_FEATURES: 361 if (s->vu_ops->get_protocol_features) { 362 s->vu_ops->get_protocol_features(s, chr, &msg); 363 } 364 break; 365 366 case VHOST_USER_GET_VRING_BASE: 367 /* send back vring base to qemu */ 368 msg.flags |= VHOST_USER_REPLY_MASK; 369 msg.size = sizeof(m.payload.state); 370 msg.payload.state.num = 0; 371 p = (uint8_t *) &msg; 372 qemu_chr_fe_write_all(chr, p, VHOST_USER_HDR_SIZE + msg.size); 373 374 assert(msg.payload.state.index < s->queues * 2); 375 s->rings &= ~(0x1ULL << msg.payload.state.index); 376 g_cond_broadcast(&s->data_cond); 377 break; 378 379 case VHOST_USER_SET_MEM_TABLE: 380 /* received the mem table */ 381 memcpy(&s->memory, &msg.payload.memory, sizeof(msg.payload.memory)); 382 s->fds_num = qemu_chr_fe_get_msgfds(chr, s->fds, 383 G_N_ELEMENTS(s->fds)); 384 385 /* signal the test that it can continue */ 386 g_cond_broadcast(&s->data_cond); 387 break; 388 389 case VHOST_USER_SET_VRING_KICK: 390 case VHOST_USER_SET_VRING_CALL: 391 /* consume the fd */ 392 qemu_chr_fe_get_msgfds(chr, &fd, 1); 393 /* 394 * This is a non-blocking eventfd. 395 * The receive function forces it to be blocking, 396 * so revert it back to non-blocking. 397 */ 398 g_unix_set_fd_nonblocking(fd, true, &err); 399 g_assert_no_error(err); 400 break; 401 402 case VHOST_USER_SET_LOG_BASE: 403 if (s->log_fd != -1) { 404 close(s->log_fd); 405 s->log_fd = -1; 406 } 407 qemu_chr_fe_get_msgfds(chr, &s->log_fd, 1); 408 msg.flags |= VHOST_USER_REPLY_MASK; 409 msg.size = 0; 410 p = (uint8_t *) &msg; 411 qemu_chr_fe_write_all(chr, p, VHOST_USER_HDR_SIZE); 412 413 g_cond_broadcast(&s->data_cond); 414 break; 415 416 case VHOST_USER_SET_VRING_BASE: 417 assert(msg.payload.state.index < s->queues * 2); 418 s->rings |= 0x1ULL << msg.payload.state.index; 419 g_cond_broadcast(&s->data_cond); 420 break; 421 422 case VHOST_USER_GET_QUEUE_NUM: 423 msg.flags |= VHOST_USER_REPLY_MASK; 424 msg.size = sizeof(m.payload.u64); 425 msg.payload.u64 = s->queues; 426 p = (uint8_t *) &msg; 427 qemu_chr_fe_write_all(chr, p, VHOST_USER_HDR_SIZE + msg.size); 428 break; 429 430 default: 431 break; 432 } 433 434 g_mutex_unlock(&s->data_mutex); 435 } 436 437 static const char *init_hugepagefs(void) 438 { 439 #ifdef CONFIG_LINUX 440 static const char *hugepagefs; 441 const char *path = getenv("QTEST_HUGETLBFS_PATH"); 442 struct statfs fs; 443 int ret; 444 445 if (hugepagefs) { 446 return hugepagefs; 447 } 448 if (!path) { 449 return NULL; 450 } 451 452 if (access(path, R_OK | W_OK | X_OK)) { 453 g_test_message("access on path (%s): %s", path, strerror(errno)); 454 g_test_fail(); 455 return NULL; 456 } 457 458 do { 459 ret = statfs(path, &fs); 460 } while (ret != 0 && errno == EINTR); 461 462 if (ret != 0) { 463 g_test_message("statfs on path (%s): %s", path, strerror(errno)); 464 g_test_fail(); 465 return NULL; 466 } 467 468 if (fs.f_type != HUGETLBFS_MAGIC) { 469 g_test_message("Warning: path not on HugeTLBFS: %s", path); 470 g_test_fail(); 471 return NULL; 472 } 473 474 hugepagefs = path; 475 return hugepagefs; 476 #else 477 return NULL; 478 #endif 479 } 480 481 static TestServer *test_server_new(const gchar *name, 482 struct vhost_user_ops *ops) 483 { 484 TestServer *server = g_new0(TestServer, 1); 485 char template[] = "/tmp/vhost-test-XXXXXX"; 486 const char *tmpfs; 487 488 server->context = g_main_context_new(); 489 server->loop = g_main_loop_new(server->context, FALSE); 490 491 /* run the main loop thread so the chardev may operate */ 492 server->thread = g_thread_new(NULL, thread_function, server->loop); 493 494 tmpfs = mkdtemp(template); 495 if (!tmpfs) { 496 g_test_message("mkdtemp on path (%s): %s", template, strerror(errno)); 497 } 498 g_assert(tmpfs); 499 500 server->tmpfs = g_strdup(tmpfs); 501 server->socket_path = g_strdup_printf("%s/%s.sock", tmpfs, name); 502 server->mig_path = g_strdup_printf("%s/%s.mig", tmpfs, name); 503 server->chr_name = g_strdup_printf("chr-%s", name); 504 505 g_mutex_init(&server->data_mutex); 506 g_cond_init(&server->data_cond); 507 508 server->log_fd = -1; 509 server->queues = 1; 510 server->vu_ops = ops; 511 512 return server; 513 } 514 515 static void chr_event(void *opaque, QEMUChrEvent event) 516 { 517 TestServer *s = opaque; 518 519 if (s->test_flags == TEST_FLAGS_END && 520 event == CHR_EVENT_CLOSED) { 521 s->test_flags = TEST_FLAGS_OK; 522 } 523 } 524 525 static void test_server_create_chr(TestServer *server, const gchar *opt) 526 { 527 gchar *chr_path; 528 Chardev *chr; 529 530 chr_path = g_strdup_printf("unix:%s%s", server->socket_path, opt); 531 chr = qemu_chr_new(server->chr_name, chr_path, server->context); 532 g_free(chr_path); 533 534 g_assert_nonnull(chr); 535 qemu_chr_fe_init(&server->chr, chr, &error_abort); 536 qemu_chr_fe_set_handlers(&server->chr, chr_can_read, chr_read, 537 chr_event, NULL, server, server->context, true); 538 } 539 540 static void test_server_listen(TestServer *server) 541 { 542 test_server_create_chr(server, ",server=on,wait=off"); 543 } 544 545 static void test_server_free(TestServer *server) 546 { 547 int i, ret; 548 549 /* finish the helper thread and dispatch pending sources */ 550 g_main_loop_quit(server->loop); 551 g_thread_join(server->thread); 552 while (g_main_context_pending(NULL)) { 553 g_main_context_iteration(NULL, TRUE); 554 } 555 556 unlink(server->socket_path); 557 g_free(server->socket_path); 558 559 unlink(server->mig_path); 560 g_free(server->mig_path); 561 562 ret = rmdir(server->tmpfs); 563 if (ret != 0) { 564 g_test_message("unable to rmdir: path (%s): %s", 565 server->tmpfs, strerror(errno)); 566 } 567 g_free(server->tmpfs); 568 569 qemu_chr_fe_deinit(&server->chr, true); 570 571 for (i = 0; i < server->fds_num; i++) { 572 close(server->fds[i]); 573 } 574 575 if (server->log_fd != -1) { 576 close(server->log_fd); 577 } 578 579 g_free(server->chr_name); 580 581 g_main_loop_unref(server->loop); 582 g_main_context_unref(server->context); 583 g_cond_clear(&server->data_cond); 584 g_mutex_clear(&server->data_mutex); 585 g_free(server); 586 } 587 588 static void wait_for_log_fd(TestServer *s) 589 { 590 gint64 end_time; 591 592 g_mutex_lock(&s->data_mutex); 593 end_time = g_get_monotonic_time() + 5 * G_TIME_SPAN_SECOND; 594 while (s->log_fd == -1) { 595 if (!g_cond_wait_until(&s->data_cond, &s->data_mutex, end_time)) { 596 /* timeout has passed */ 597 g_assert(s->log_fd != -1); 598 break; 599 } 600 } 601 602 g_mutex_unlock(&s->data_mutex); 603 } 604 605 static void write_guest_mem(TestServer *s, uint32_t seed) 606 { 607 uint32_t *guest_mem; 608 int i, j; 609 size_t size; 610 611 /* iterate all regions */ 612 for (i = 0; i < s->fds_num; i++) { 613 614 /* We'll write only the region statring at 0x0 */ 615 if (s->memory.regions[i].guest_phys_addr != 0x0) { 616 continue; 617 } 618 619 g_assert_cmpint(s->memory.regions[i].memory_size, >, 1024); 620 621 size = s->memory.regions[i].memory_size + 622 s->memory.regions[i].mmap_offset; 623 624 guest_mem = mmap(0, size, PROT_READ | PROT_WRITE, 625 MAP_SHARED, s->fds[i], 0); 626 627 g_assert(guest_mem != MAP_FAILED); 628 guest_mem += (s->memory.regions[i].mmap_offset / sizeof(*guest_mem)); 629 630 for (j = 0; j < 256; j++) { 631 guest_mem[j] = seed + j; 632 } 633 634 munmap(guest_mem, s->memory.regions[i].memory_size); 635 break; 636 } 637 } 638 639 static guint64 get_log_size(TestServer *s) 640 { 641 guint64 log_size = 0; 642 int i; 643 644 for (i = 0; i < s->memory.nregions; ++i) { 645 VhostUserMemoryRegion *reg = &s->memory.regions[i]; 646 guint64 last = range_get_last(reg->guest_phys_addr, 647 reg->memory_size); 648 log_size = MAX(log_size, last / (8 * VHOST_LOG_PAGE) + 1); 649 } 650 651 return log_size; 652 } 653 654 typedef struct TestMigrateSource { 655 GSource source; 656 TestServer *src; 657 TestServer *dest; 658 } TestMigrateSource; 659 660 static gboolean 661 test_migrate_source_check(GSource *source) 662 { 663 TestMigrateSource *t = (TestMigrateSource *)source; 664 gboolean overlap = t->src->rings && t->dest->rings; 665 666 g_assert(!overlap); 667 668 return FALSE; 669 } 670 671 GSourceFuncs test_migrate_source_funcs = { 672 .check = test_migrate_source_check, 673 }; 674 675 static void vhost_user_test_cleanup(void *s) 676 { 677 TestServer *server = s; 678 679 qos_invalidate_command_line(); 680 test_server_free(server); 681 } 682 683 static void *vhost_user_test_setup(GString *cmd_line, void *arg) 684 { 685 TestServer *server = test_server_new("vhost-user-test", arg); 686 test_server_listen(server); 687 688 append_mem_opts(server, cmd_line, 256, TEST_MEMFD_AUTO); 689 server->vu_ops->append_opts(server, cmd_line, ""); 690 691 g_test_queue_destroy(vhost_user_test_cleanup, server); 692 693 return server; 694 } 695 696 static void *vhost_user_test_setup_memfd(GString *cmd_line, void *arg) 697 { 698 TestServer *server = test_server_new("vhost-user-test", arg); 699 test_server_listen(server); 700 701 append_mem_opts(server, cmd_line, 256, TEST_MEMFD_YES); 702 server->vu_ops->append_opts(server, cmd_line, ""); 703 704 g_test_queue_destroy(vhost_user_test_cleanup, server); 705 706 return server; 707 } 708 709 static void test_read_guest_mem(void *obj, void *arg, QGuestAllocator *alloc) 710 { 711 TestServer *server = arg; 712 713 if (!wait_for_fds(server)) { 714 return; 715 } 716 717 read_guest_mem_server(global_qtest, server); 718 } 719 720 static void test_migrate(void *obj, void *arg, QGuestAllocator *alloc) 721 { 722 TestServer *s = arg; 723 TestServer *dest; 724 GString *dest_cmdline; 725 char *uri; 726 QTestState *to; 727 GSource *source; 728 QDict *rsp; 729 guint8 *log; 730 guint64 size; 731 732 if (!wait_for_fds(s)) { 733 return; 734 } 735 736 dest = test_server_new("dest", s->vu_ops); 737 dest_cmdline = g_string_new(qos_get_current_command_line()); 738 uri = g_strdup_printf("%s%s", "unix:", dest->mig_path); 739 740 size = get_log_size(s); 741 g_assert_cmpint(size, ==, (256 * 1024 * 1024) / (VHOST_LOG_PAGE * 8)); 742 743 test_server_listen(dest); 744 g_string_append_printf(dest_cmdline, " -incoming %s", uri); 745 append_mem_opts(dest, dest_cmdline, 256, TEST_MEMFD_AUTO); 746 dest->vu_ops->append_opts(dest, dest_cmdline, ""); 747 to = qtest_init(dest_cmdline->str); 748 749 /* This would be where you call qos_allocate_objects(to, NULL), if you want 750 * to talk to the QVirtioNet object on the destination. 751 */ 752 753 source = g_source_new(&test_migrate_source_funcs, 754 sizeof(TestMigrateSource)); 755 ((TestMigrateSource *)source)->src = s; 756 ((TestMigrateSource *)source)->dest = dest; 757 g_source_attach(source, s->context); 758 759 /* slow down migration to have time to fiddle with log */ 760 /* TODO: qtest could learn to break on some places */ 761 rsp = qmp("{ 'execute': 'migrate-set-parameters'," 762 "'arguments': { 'max-bandwidth': 10 } }"); 763 g_assert(qdict_haskey(rsp, "return")); 764 qobject_unref(rsp); 765 766 rsp = qmp("{ 'execute': 'migrate', 'arguments': { 'uri': %s } }", uri); 767 g_assert(qdict_haskey(rsp, "return")); 768 qobject_unref(rsp); 769 770 wait_for_log_fd(s); 771 772 log = mmap(0, size, PROT_READ | PROT_WRITE, MAP_SHARED, s->log_fd, 0); 773 g_assert(log != MAP_FAILED); 774 775 /* modify first page */ 776 write_guest_mem(s, 0x42); 777 log[0] = 1; 778 munmap(log, size); 779 780 /* speed things up */ 781 rsp = qmp("{ 'execute': 'migrate-set-parameters'," 782 "'arguments': { 'max-bandwidth': 0 } }"); 783 g_assert(qdict_haskey(rsp, "return")); 784 qobject_unref(rsp); 785 786 qmp_eventwait("STOP"); 787 qtest_qmp_eventwait(to, "RESUME"); 788 789 g_assert(wait_for_fds(dest)); 790 read_guest_mem_server(to, dest); 791 792 g_source_destroy(source); 793 g_source_unref(source); 794 795 qtest_quit(to); 796 test_server_free(dest); 797 g_free(uri); 798 g_string_free(dest_cmdline, true); 799 } 800 801 static void wait_for_rings_started(TestServer *s, size_t count) 802 { 803 gint64 end_time; 804 805 g_mutex_lock(&s->data_mutex); 806 end_time = g_get_monotonic_time() + 5 * G_TIME_SPAN_SECOND; 807 while (ctpop64(s->rings) != count) { 808 if (!g_cond_wait_until(&s->data_cond, &s->data_mutex, end_time)) { 809 /* timeout has passed */ 810 g_assert_cmpint(ctpop64(s->rings), ==, count); 811 break; 812 } 813 } 814 815 g_mutex_unlock(&s->data_mutex); 816 } 817 818 static inline void test_server_connect(TestServer *server) 819 { 820 test_server_create_chr(server, ",reconnect=1"); 821 } 822 823 static gboolean 824 reconnect_cb(gpointer user_data) 825 { 826 TestServer *s = user_data; 827 828 qemu_chr_fe_disconnect(&s->chr); 829 830 return FALSE; 831 } 832 833 static gpointer 834 connect_thread(gpointer data) 835 { 836 TestServer *s = data; 837 838 /* wait for qemu to start before first try, to avoid extra warnings */ 839 g_usleep(G_USEC_PER_SEC); 840 test_server_connect(s); 841 842 return NULL; 843 } 844 845 static void *vhost_user_test_setup_reconnect(GString *cmd_line, void *arg) 846 { 847 TestServer *s = test_server_new("reconnect", arg); 848 849 g_thread_new("connect", connect_thread, s); 850 append_mem_opts(s, cmd_line, 256, TEST_MEMFD_AUTO); 851 s->vu_ops->append_opts(s, cmd_line, ",server=on"); 852 853 g_test_queue_destroy(vhost_user_test_cleanup, s); 854 855 return s; 856 } 857 858 static void test_reconnect(void *obj, void *arg, QGuestAllocator *alloc) 859 { 860 TestServer *s = arg; 861 GSource *src; 862 863 if (!wait_for_fds(s)) { 864 return; 865 } 866 867 wait_for_rings_started(s, 2); 868 869 /* reconnect */ 870 s->fds_num = 0; 871 s->rings = 0; 872 src = g_idle_source_new(); 873 g_source_set_callback(src, reconnect_cb, s, NULL); 874 g_source_attach(src, s->context); 875 g_source_unref(src); 876 g_assert(wait_for_fds(s)); 877 wait_for_rings_started(s, 2); 878 } 879 880 static void *vhost_user_test_setup_connect_fail(GString *cmd_line, void *arg) 881 { 882 TestServer *s = test_server_new("connect-fail", arg); 883 884 s->test_fail = true; 885 886 g_thread_new("connect", connect_thread, s); 887 append_mem_opts(s, cmd_line, 256, TEST_MEMFD_AUTO); 888 s->vu_ops->append_opts(s, cmd_line, ",server=on"); 889 890 g_test_queue_destroy(vhost_user_test_cleanup, s); 891 892 return s; 893 } 894 895 static void *vhost_user_test_setup_flags_mismatch(GString *cmd_line, void *arg) 896 { 897 TestServer *s = test_server_new("flags-mismatch", arg); 898 899 s->test_flags = TEST_FLAGS_DISCONNECT; 900 901 g_thread_new("connect", connect_thread, s); 902 append_mem_opts(s, cmd_line, 256, TEST_MEMFD_AUTO); 903 s->vu_ops->append_opts(s, cmd_line, ",server=on"); 904 905 g_test_queue_destroy(vhost_user_test_cleanup, s); 906 907 return s; 908 } 909 910 static void test_vhost_user_started(void *obj, void *arg, QGuestAllocator *alloc) 911 { 912 TestServer *s = arg; 913 914 if (!wait_for_fds(s)) { 915 return; 916 } 917 wait_for_rings_started(s, 2); 918 } 919 920 static void *vhost_user_test_setup_multiqueue(GString *cmd_line, void *arg) 921 { 922 TestServer *s = vhost_user_test_setup(cmd_line, arg); 923 924 s->queues = 2; 925 g_string_append_printf(cmd_line, 926 " -set netdev.hs0.queues=%d" 927 " -global virtio-net-pci.vectors=%d", 928 s->queues, s->queues * 2 + 2); 929 930 return s; 931 } 932 933 static void test_multiqueue(void *obj, void *arg, QGuestAllocator *alloc) 934 { 935 TestServer *s = arg; 936 937 wait_for_rings_started(s, s->queues * 2); 938 } 939 940 static void vu_net_set_features(TestServer *s, CharBackend *chr, 941 VhostUserMsg *msg) 942 { 943 g_assert_cmpint(msg->payload.u64 & 944 (0x1ULL << VHOST_USER_F_PROTOCOL_FEATURES), !=, 0ULL); 945 if (s->test_flags == TEST_FLAGS_DISCONNECT) { 946 qemu_chr_fe_disconnect(chr); 947 s->test_flags = TEST_FLAGS_BAD; 948 } 949 } 950 951 static void vu_net_get_protocol_features(TestServer *s, CharBackend *chr, 952 VhostUserMsg *msg) 953 { 954 /* send back features to qemu */ 955 msg->flags |= VHOST_USER_REPLY_MASK; 956 msg->size = sizeof(m.payload.u64); 957 msg->payload.u64 = 1 << VHOST_USER_PROTOCOL_F_LOG_SHMFD; 958 msg->payload.u64 |= 1 << VHOST_USER_PROTOCOL_F_CROSS_ENDIAN; 959 if (s->queues > 1) { 960 msg->payload.u64 |= 1 << VHOST_USER_PROTOCOL_F_MQ; 961 } 962 qemu_chr_fe_write_all(chr, (uint8_t *)msg, VHOST_USER_HDR_SIZE + msg->size); 963 } 964 965 /* Each VHOST-USER device should have its ops structure defined. */ 966 static struct vhost_user_ops g_vu_net_ops = { 967 .type = VHOST_USER_NET, 968 969 .append_opts = append_vhost_net_opts, 970 971 .set_features = vu_net_set_features, 972 .get_protocol_features = vu_net_get_protocol_features, 973 }; 974 975 static void register_vhost_user_test(void) 976 { 977 QOSGraphTestOptions opts = { 978 .before = vhost_user_test_setup, 979 .subprocess = true, 980 .arg = &g_vu_net_ops, 981 }; 982 983 qemu_add_opts(&qemu_chardev_opts); 984 985 qos_add_test("vhost-user/read-guest-mem/memfile", 986 "virtio-net", 987 test_read_guest_mem, &opts); 988 989 if (qemu_memfd_check(MFD_ALLOW_SEALING)) { 990 opts.before = vhost_user_test_setup_memfd; 991 qos_add_test("vhost-user/read-guest-mem/memfd", 992 "virtio-net", 993 test_read_guest_mem, &opts); 994 } 995 996 qos_add_test("vhost-user/migrate", 997 "virtio-net", 998 test_migrate, &opts); 999 1000 opts.before = vhost_user_test_setup_reconnect; 1001 qos_add_test("vhost-user/reconnect", "virtio-net", 1002 test_reconnect, &opts); 1003 1004 opts.before = vhost_user_test_setup_connect_fail; 1005 qos_add_test("vhost-user/connect-fail", "virtio-net", 1006 test_vhost_user_started, &opts); 1007 1008 opts.before = vhost_user_test_setup_flags_mismatch; 1009 qos_add_test("vhost-user/flags-mismatch", "virtio-net", 1010 test_vhost_user_started, &opts); 1011 1012 opts.before = vhost_user_test_setup_multiqueue; 1013 opts.edge.extra_device_opts = "mq=on"; 1014 qos_add_test("vhost-user/multiqueue", 1015 "virtio-net", 1016 test_multiqueue, &opts); 1017 } 1018 libqos_init(register_vhost_user_test); 1019