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" 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 TestServer *s = opaque; 306 CharBackend *chr = &s->chr; 307 VhostUserMsg msg; 308 uint8_t *p = (uint8_t *) &msg; 309 int fd = -1; 310 311 if (s->test_fail) { 312 qemu_chr_fe_disconnect(chr); 313 /* now switch to non-failure */ 314 s->test_fail = false; 315 } 316 317 if (size != VHOST_USER_HDR_SIZE) { 318 g_test_message("Wrong message size received %d", size); 319 return; 320 } 321 322 g_mutex_lock(&s->data_mutex); 323 memcpy(p, buf, VHOST_USER_HDR_SIZE); 324 325 if (msg.size) { 326 p += VHOST_USER_HDR_SIZE; 327 size = qemu_chr_fe_read_all(chr, p, msg.size); 328 if (size != msg.size) { 329 g_test_message("Wrong message size received %d != %d", 330 size, msg.size); 331 return; 332 } 333 } 334 335 switch (msg.request) { 336 case VHOST_USER_GET_FEATURES: 337 /* send back features to qemu */ 338 msg.flags |= VHOST_USER_REPLY_MASK; 339 msg.size = sizeof(m.payload.u64); 340 msg.payload.u64 = 0x1ULL << VHOST_F_LOG_ALL | 341 0x1ULL << VHOST_USER_F_PROTOCOL_FEATURES; 342 if (s->queues > 1) { 343 msg.payload.u64 |= 0x1ULL << VIRTIO_NET_F_MQ; 344 } 345 if (s->test_flags >= TEST_FLAGS_BAD) { 346 msg.payload.u64 = 0; 347 s->test_flags = TEST_FLAGS_END; 348 } 349 p = (uint8_t *) &msg; 350 qemu_chr_fe_write_all(chr, p, VHOST_USER_HDR_SIZE + msg.size); 351 break; 352 353 case VHOST_USER_SET_FEATURES: 354 if (s->vu_ops->set_features) { 355 s->vu_ops->set_features(s, chr, &msg); 356 } 357 break; 358 359 case VHOST_USER_GET_PROTOCOL_FEATURES: 360 if (s->vu_ops->get_protocol_features) { 361 s->vu_ops->get_protocol_features(s, chr, &msg); 362 } 363 break; 364 365 case VHOST_USER_GET_VRING_BASE: 366 /* send back vring base to qemu */ 367 msg.flags |= VHOST_USER_REPLY_MASK; 368 msg.size = sizeof(m.payload.state); 369 msg.payload.state.num = 0; 370 p = (uint8_t *) &msg; 371 qemu_chr_fe_write_all(chr, p, VHOST_USER_HDR_SIZE + msg.size); 372 373 assert(msg.payload.state.index < s->queues * 2); 374 s->rings &= ~(0x1ULL << msg.payload.state.index); 375 g_cond_broadcast(&s->data_cond); 376 break; 377 378 case VHOST_USER_SET_MEM_TABLE: 379 /* received the mem table */ 380 memcpy(&s->memory, &msg.payload.memory, sizeof(msg.payload.memory)); 381 s->fds_num = qemu_chr_fe_get_msgfds(chr, s->fds, 382 G_N_ELEMENTS(s->fds)); 383 384 /* signal the test that it can continue */ 385 g_cond_broadcast(&s->data_cond); 386 break; 387 388 case VHOST_USER_SET_VRING_KICK: 389 case VHOST_USER_SET_VRING_CALL: 390 /* consume the fd */ 391 qemu_chr_fe_get_msgfds(chr, &fd, 1); 392 /* 393 * This is a non-blocking eventfd. 394 * The receive function forces it to be blocking, 395 * so revert it back to non-blocking. 396 */ 397 qemu_set_nonblock(fd); 398 break; 399 400 case VHOST_USER_SET_LOG_BASE: 401 if (s->log_fd != -1) { 402 close(s->log_fd); 403 s->log_fd = -1; 404 } 405 qemu_chr_fe_get_msgfds(chr, &s->log_fd, 1); 406 msg.flags |= VHOST_USER_REPLY_MASK; 407 msg.size = 0; 408 p = (uint8_t *) &msg; 409 qemu_chr_fe_write_all(chr, p, VHOST_USER_HDR_SIZE); 410 411 g_cond_broadcast(&s->data_cond); 412 break; 413 414 case VHOST_USER_SET_VRING_BASE: 415 assert(msg.payload.state.index < s->queues * 2); 416 s->rings |= 0x1ULL << msg.payload.state.index; 417 g_cond_broadcast(&s->data_cond); 418 break; 419 420 case VHOST_USER_GET_QUEUE_NUM: 421 msg.flags |= VHOST_USER_REPLY_MASK; 422 msg.size = sizeof(m.payload.u64); 423 msg.payload.u64 = s->queues; 424 p = (uint8_t *) &msg; 425 qemu_chr_fe_write_all(chr, p, VHOST_USER_HDR_SIZE + msg.size); 426 break; 427 428 default: 429 break; 430 } 431 432 g_mutex_unlock(&s->data_mutex); 433 } 434 435 static const char *init_hugepagefs(void) 436 { 437 #ifdef CONFIG_LINUX 438 static const char *hugepagefs; 439 const char *path = getenv("QTEST_HUGETLBFS_PATH"); 440 struct statfs fs; 441 int ret; 442 443 if (hugepagefs) { 444 return hugepagefs; 445 } 446 if (!path) { 447 return NULL; 448 } 449 450 if (access(path, R_OK | W_OK | X_OK)) { 451 g_test_message("access on path (%s): %s", path, strerror(errno)); 452 g_test_fail(); 453 return NULL; 454 } 455 456 do { 457 ret = statfs(path, &fs); 458 } while (ret != 0 && errno == EINTR); 459 460 if (ret != 0) { 461 g_test_message("statfs on path (%s): %s", path, strerror(errno)); 462 g_test_fail(); 463 return NULL; 464 } 465 466 if (fs.f_type != HUGETLBFS_MAGIC) { 467 g_test_message("Warning: path not on HugeTLBFS: %s", path); 468 g_test_fail(); 469 return NULL; 470 } 471 472 hugepagefs = path; 473 return hugepagefs; 474 #else 475 return NULL; 476 #endif 477 } 478 479 static TestServer *test_server_new(const gchar *name, 480 struct vhost_user_ops *ops) 481 { 482 TestServer *server = g_new0(TestServer, 1); 483 char template[] = "/tmp/vhost-test-XXXXXX"; 484 const char *tmpfs; 485 486 server->context = g_main_context_new(); 487 server->loop = g_main_loop_new(server->context, FALSE); 488 489 /* run the main loop thread so the chardev may operate */ 490 server->thread = g_thread_new(NULL, thread_function, server->loop); 491 492 tmpfs = mkdtemp(template); 493 if (!tmpfs) { 494 g_test_message("mkdtemp on path (%s): %s", template, strerror(errno)); 495 } 496 g_assert(tmpfs); 497 498 server->tmpfs = g_strdup(tmpfs); 499 server->socket_path = g_strdup_printf("%s/%s.sock", tmpfs, name); 500 server->mig_path = g_strdup_printf("%s/%s.mig", tmpfs, name); 501 server->chr_name = g_strdup_printf("chr-%s", name); 502 503 g_mutex_init(&server->data_mutex); 504 g_cond_init(&server->data_cond); 505 506 server->log_fd = -1; 507 server->queues = 1; 508 server->vu_ops = ops; 509 510 return server; 511 } 512 513 static void chr_event(void *opaque, QEMUChrEvent event) 514 { 515 TestServer *s = opaque; 516 517 if (s->test_flags == TEST_FLAGS_END && 518 event == CHR_EVENT_CLOSED) { 519 s->test_flags = TEST_FLAGS_OK; 520 } 521 } 522 523 static void test_server_create_chr(TestServer *server, const gchar *opt) 524 { 525 gchar *chr_path; 526 Chardev *chr; 527 528 chr_path = g_strdup_printf("unix:%s%s", server->socket_path, opt); 529 chr = qemu_chr_new(server->chr_name, chr_path, server->context); 530 g_free(chr_path); 531 532 g_assert_nonnull(chr); 533 qemu_chr_fe_init(&server->chr, chr, &error_abort); 534 qemu_chr_fe_set_handlers(&server->chr, chr_can_read, chr_read, 535 chr_event, NULL, server, server->context, true); 536 } 537 538 static void test_server_listen(TestServer *server) 539 { 540 test_server_create_chr(server, ",server,nowait"); 541 } 542 543 static void test_server_free(TestServer *server) 544 { 545 int i, ret; 546 547 /* finish the helper thread and dispatch pending sources */ 548 g_main_loop_quit(server->loop); 549 g_thread_join(server->thread); 550 while (g_main_context_pending(NULL)) { 551 g_main_context_iteration(NULL, TRUE); 552 } 553 554 unlink(server->socket_path); 555 g_free(server->socket_path); 556 557 unlink(server->mig_path); 558 g_free(server->mig_path); 559 560 ret = rmdir(server->tmpfs); 561 if (ret != 0) { 562 g_test_message("unable to rmdir: path (%s): %s", 563 server->tmpfs, strerror(errno)); 564 } 565 g_free(server->tmpfs); 566 567 qemu_chr_fe_deinit(&server->chr, true); 568 569 for (i = 0; i < server->fds_num; i++) { 570 close(server->fds[i]); 571 } 572 573 if (server->log_fd != -1) { 574 close(server->log_fd); 575 } 576 577 g_free(server->chr_name); 578 579 g_main_loop_unref(server->loop); 580 g_main_context_unref(server->context); 581 g_cond_clear(&server->data_cond); 582 g_mutex_clear(&server->data_mutex); 583 g_free(server); 584 } 585 586 static void wait_for_log_fd(TestServer *s) 587 { 588 gint64 end_time; 589 590 g_mutex_lock(&s->data_mutex); 591 end_time = g_get_monotonic_time() + 5 * G_TIME_SPAN_SECOND; 592 while (s->log_fd == -1) { 593 if (!g_cond_wait_until(&s->data_cond, &s->data_mutex, end_time)) { 594 /* timeout has passed */ 595 g_assert(s->log_fd != -1); 596 break; 597 } 598 } 599 600 g_mutex_unlock(&s->data_mutex); 601 } 602 603 static void write_guest_mem(TestServer *s, uint32_t seed) 604 { 605 uint32_t *guest_mem; 606 int i, j; 607 size_t size; 608 609 /* iterate all regions */ 610 for (i = 0; i < s->fds_num; i++) { 611 612 /* We'll write only the region statring at 0x0 */ 613 if (s->memory.regions[i].guest_phys_addr != 0x0) { 614 continue; 615 } 616 617 g_assert_cmpint(s->memory.regions[i].memory_size, >, 1024); 618 619 size = s->memory.regions[i].memory_size + 620 s->memory.regions[i].mmap_offset; 621 622 guest_mem = mmap(0, size, PROT_READ | PROT_WRITE, 623 MAP_SHARED, s->fds[i], 0); 624 625 g_assert(guest_mem != MAP_FAILED); 626 guest_mem += (s->memory.regions[i].mmap_offset / sizeof(*guest_mem)); 627 628 for (j = 0; j < 256; j++) { 629 guest_mem[j] = seed + j; 630 } 631 632 munmap(guest_mem, s->memory.regions[i].memory_size); 633 break; 634 } 635 } 636 637 static guint64 get_log_size(TestServer *s) 638 { 639 guint64 log_size = 0; 640 int i; 641 642 for (i = 0; i < s->memory.nregions; ++i) { 643 VhostUserMemoryRegion *reg = &s->memory.regions[i]; 644 guint64 last = range_get_last(reg->guest_phys_addr, 645 reg->memory_size); 646 log_size = MAX(log_size, last / (8 * VHOST_LOG_PAGE) + 1); 647 } 648 649 return log_size; 650 } 651 652 typedef struct TestMigrateSource { 653 GSource source; 654 TestServer *src; 655 TestServer *dest; 656 } TestMigrateSource; 657 658 static gboolean 659 test_migrate_source_check(GSource *source) 660 { 661 TestMigrateSource *t = (TestMigrateSource *)source; 662 gboolean overlap = t->src->rings && t->dest->rings; 663 664 g_assert(!overlap); 665 666 return FALSE; 667 } 668 669 GSourceFuncs test_migrate_source_funcs = { 670 .check = test_migrate_source_check, 671 }; 672 673 static void vhost_user_test_cleanup(void *s) 674 { 675 TestServer *server = s; 676 677 qos_invalidate_command_line(); 678 test_server_free(server); 679 } 680 681 static void *vhost_user_test_setup(GString *cmd_line, void *arg) 682 { 683 TestServer *server = test_server_new("vhost-user-test", arg); 684 test_server_listen(server); 685 686 append_mem_opts(server, cmd_line, 256, TEST_MEMFD_AUTO); 687 server->vu_ops->append_opts(server, cmd_line, ""); 688 689 g_test_queue_destroy(vhost_user_test_cleanup, server); 690 691 return server; 692 } 693 694 static void *vhost_user_test_setup_memfd(GString *cmd_line, void *arg) 695 { 696 TestServer *server = test_server_new("vhost-user-test", arg); 697 test_server_listen(server); 698 699 append_mem_opts(server, cmd_line, 256, TEST_MEMFD_YES); 700 server->vu_ops->append_opts(server, cmd_line, ""); 701 702 g_test_queue_destroy(vhost_user_test_cleanup, server); 703 704 return server; 705 } 706 707 static void test_read_guest_mem(void *obj, void *arg, QGuestAllocator *alloc) 708 { 709 TestServer *server = arg; 710 711 if (!wait_for_fds(server)) { 712 return; 713 } 714 715 read_guest_mem_server(global_qtest, server); 716 } 717 718 static void test_migrate(void *obj, void *arg, QGuestAllocator *alloc) 719 { 720 TestServer *s = arg; 721 TestServer *dest; 722 GString *dest_cmdline; 723 char *uri; 724 QTestState *to; 725 GSource *source; 726 QDict *rsp; 727 guint8 *log; 728 guint64 size; 729 730 if (!wait_for_fds(s)) { 731 return; 732 } 733 734 dest = test_server_new("dest", s->vu_ops); 735 dest_cmdline = g_string_new(qos_get_current_command_line()); 736 uri = g_strdup_printf("%s%s", "unix:", dest->mig_path); 737 738 size = get_log_size(s); 739 g_assert_cmpint(size, ==, (256 * 1024 * 1024) / (VHOST_LOG_PAGE * 8)); 740 741 test_server_listen(dest); 742 g_string_append_printf(dest_cmdline, " -incoming %s", uri); 743 append_mem_opts(dest, dest_cmdline, 256, TEST_MEMFD_AUTO); 744 dest->vu_ops->append_opts(dest, dest_cmdline, ""); 745 to = qtest_init(dest_cmdline->str); 746 747 /* This would be where you call qos_allocate_objects(to, NULL), if you want 748 * to talk to the QVirtioNet object on the destination. 749 */ 750 751 source = g_source_new(&test_migrate_source_funcs, 752 sizeof(TestMigrateSource)); 753 ((TestMigrateSource *)source)->src = s; 754 ((TestMigrateSource *)source)->dest = dest; 755 g_source_attach(source, s->context); 756 757 /* slow down migration to have time to fiddle with log */ 758 /* TODO: qtest could learn to break on some places */ 759 rsp = qmp("{ 'execute': 'migrate_set_speed'," 760 "'arguments': { 'value': 10 } }"); 761 g_assert(qdict_haskey(rsp, "return")); 762 qobject_unref(rsp); 763 764 rsp = qmp("{ 'execute': 'migrate', 'arguments': { 'uri': %s } }", uri); 765 g_assert(qdict_haskey(rsp, "return")); 766 qobject_unref(rsp); 767 768 wait_for_log_fd(s); 769 770 log = mmap(0, size, PROT_READ | PROT_WRITE, MAP_SHARED, s->log_fd, 0); 771 g_assert(log != MAP_FAILED); 772 773 /* modify first page */ 774 write_guest_mem(s, 0x42); 775 log[0] = 1; 776 munmap(log, size); 777 778 /* speed things up */ 779 rsp = qmp("{ 'execute': 'migrate_set_speed'," 780 "'arguments': { 'value': 0 } }"); 781 g_assert(qdict_haskey(rsp, "return")); 782 qobject_unref(rsp); 783 784 qmp_eventwait("STOP"); 785 qtest_qmp_eventwait(to, "RESUME"); 786 787 g_assert(wait_for_fds(dest)); 788 read_guest_mem_server(to, dest); 789 790 g_source_destroy(source); 791 g_source_unref(source); 792 793 qtest_quit(to); 794 test_server_free(dest); 795 g_free(uri); 796 g_string_free(dest_cmdline, true); 797 } 798 799 static void wait_for_rings_started(TestServer *s, size_t count) 800 { 801 gint64 end_time; 802 803 g_mutex_lock(&s->data_mutex); 804 end_time = g_get_monotonic_time() + 5 * G_TIME_SPAN_SECOND; 805 while (ctpop64(s->rings) != count) { 806 if (!g_cond_wait_until(&s->data_cond, &s->data_mutex, end_time)) { 807 /* timeout has passed */ 808 g_assert_cmpint(ctpop64(s->rings), ==, count); 809 break; 810 } 811 } 812 813 g_mutex_unlock(&s->data_mutex); 814 } 815 816 static inline void test_server_connect(TestServer *server) 817 { 818 test_server_create_chr(server, ",reconnect=1"); 819 } 820 821 static gboolean 822 reconnect_cb(gpointer user_data) 823 { 824 TestServer *s = user_data; 825 826 qemu_chr_fe_disconnect(&s->chr); 827 828 return FALSE; 829 } 830 831 static gpointer 832 connect_thread(gpointer data) 833 { 834 TestServer *s = data; 835 836 /* wait for qemu to start before first try, to avoid extra warnings */ 837 g_usleep(G_USEC_PER_SEC); 838 test_server_connect(s); 839 840 return NULL; 841 } 842 843 static void *vhost_user_test_setup_reconnect(GString *cmd_line, void *arg) 844 { 845 TestServer *s = test_server_new("reconnect", arg); 846 847 g_thread_new("connect", connect_thread, s); 848 append_mem_opts(s, cmd_line, 256, TEST_MEMFD_AUTO); 849 s->vu_ops->append_opts(s, cmd_line, ",server"); 850 851 g_test_queue_destroy(vhost_user_test_cleanup, s); 852 853 return s; 854 } 855 856 static void test_reconnect(void *obj, void *arg, QGuestAllocator *alloc) 857 { 858 TestServer *s = arg; 859 GSource *src; 860 861 if (!wait_for_fds(s)) { 862 return; 863 } 864 865 wait_for_rings_started(s, 2); 866 867 /* reconnect */ 868 s->fds_num = 0; 869 s->rings = 0; 870 src = g_idle_source_new(); 871 g_source_set_callback(src, reconnect_cb, s, NULL); 872 g_source_attach(src, s->context); 873 g_source_unref(src); 874 g_assert(wait_for_fds(s)); 875 wait_for_rings_started(s, 2); 876 } 877 878 static void *vhost_user_test_setup_connect_fail(GString *cmd_line, void *arg) 879 { 880 TestServer *s = test_server_new("connect-fail", arg); 881 882 s->test_fail = true; 883 884 g_thread_new("connect", connect_thread, s); 885 append_mem_opts(s, cmd_line, 256, TEST_MEMFD_AUTO); 886 s->vu_ops->append_opts(s, cmd_line, ",server"); 887 888 g_test_queue_destroy(vhost_user_test_cleanup, s); 889 890 return s; 891 } 892 893 static void *vhost_user_test_setup_flags_mismatch(GString *cmd_line, void *arg) 894 { 895 TestServer *s = test_server_new("flags-mismatch", arg); 896 897 s->test_flags = TEST_FLAGS_DISCONNECT; 898 899 g_thread_new("connect", connect_thread, s); 900 append_mem_opts(s, cmd_line, 256, TEST_MEMFD_AUTO); 901 s->vu_ops->append_opts(s, cmd_line, ",server"); 902 903 g_test_queue_destroy(vhost_user_test_cleanup, s); 904 905 return s; 906 } 907 908 static void test_vhost_user_started(void *obj, void *arg, QGuestAllocator *alloc) 909 { 910 TestServer *s = arg; 911 912 if (!wait_for_fds(s)) { 913 return; 914 } 915 wait_for_rings_started(s, 2); 916 } 917 918 static void *vhost_user_test_setup_multiqueue(GString *cmd_line, void *arg) 919 { 920 TestServer *s = vhost_user_test_setup(cmd_line, arg); 921 922 s->queues = 2; 923 g_string_append_printf(cmd_line, 924 " -set netdev.hs0.queues=%d" 925 " -global virtio-net-pci.vectors=%d", 926 s->queues, s->queues * 2 + 2); 927 928 return s; 929 } 930 931 static void test_multiqueue(void *obj, void *arg, QGuestAllocator *alloc) 932 { 933 TestServer *s = arg; 934 935 wait_for_rings_started(s, s->queues * 2); 936 } 937 938 static void vu_net_set_features(TestServer *s, CharBackend *chr, 939 VhostUserMsg *msg) 940 { 941 g_assert_cmpint(msg->payload.u64 & 942 (0x1ULL << VHOST_USER_F_PROTOCOL_FEATURES), !=, 0ULL); 943 if (s->test_flags == TEST_FLAGS_DISCONNECT) { 944 qemu_chr_fe_disconnect(chr); 945 s->test_flags = TEST_FLAGS_BAD; 946 } 947 } 948 949 static void vu_net_get_protocol_features(TestServer *s, CharBackend *chr, 950 VhostUserMsg *msg) 951 { 952 /* send back features to qemu */ 953 msg->flags |= VHOST_USER_REPLY_MASK; 954 msg->size = sizeof(m.payload.u64); 955 msg->payload.u64 = 1 << VHOST_USER_PROTOCOL_F_LOG_SHMFD; 956 msg->payload.u64 |= 1 << VHOST_USER_PROTOCOL_F_CROSS_ENDIAN; 957 if (s->queues > 1) { 958 msg->payload.u64 |= 1 << VHOST_USER_PROTOCOL_F_MQ; 959 } 960 qemu_chr_fe_write_all(chr, (uint8_t *)msg, VHOST_USER_HDR_SIZE + msg->size); 961 } 962 963 /* Each VHOST-USER device should have its ops structure defined. */ 964 static struct vhost_user_ops g_vu_net_ops = { 965 .type = VHOST_USER_NET, 966 967 .append_opts = append_vhost_net_opts, 968 969 .set_features = vu_net_set_features, 970 .get_protocol_features = vu_net_get_protocol_features, 971 }; 972 973 static void register_vhost_user_test(void) 974 { 975 QOSGraphTestOptions opts = { 976 .before = vhost_user_test_setup, 977 .subprocess = true, 978 .arg = &g_vu_net_ops, 979 }; 980 981 qemu_add_opts(&qemu_chardev_opts); 982 983 qos_add_test("vhost-user/read-guest-mem/memfile", 984 "virtio-net", 985 test_read_guest_mem, &opts); 986 987 if (qemu_memfd_check(MFD_ALLOW_SEALING)) { 988 opts.before = vhost_user_test_setup_memfd; 989 qos_add_test("vhost-user/read-guest-mem/memfd", 990 "virtio-net", 991 test_read_guest_mem, &opts); 992 } 993 994 qos_add_test("vhost-user/migrate", 995 "virtio-net", 996 test_migrate, &opts); 997 998 /* keeps failing on build-system since Aug 15 2017 */ 999 if (getenv("QTEST_VHOST_USER_FIXME")) { 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 1013 opts.before = vhost_user_test_setup_multiqueue; 1014 opts.edge.extra_device_opts = "mq=on"; 1015 qos_add_test("vhost-user/multiqueue", 1016 "virtio-net", 1017 test_multiqueue, &opts); 1018 } 1019 libqos_init(register_vhost_user_test); 1020