1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright (C) 2016 Intel Corporation. All rights reserved. 3 * Copyright (c) 2018-2019, 2021 Mellanox Technologies LTD. All rights reserved. 4 * Copyright (c) 2021, 2023 NVIDIA CORPORATION & AFFILIATES. All rights reserved. 5 */ 6 7 #include "spdk/stdinc.h" 8 9 #include "spdk/bdev.h" 10 #include "spdk/bit_array.h" 11 #include "spdk/thread.h" 12 #include "spdk/nvmf.h" 13 #include "spdk/endian.h" 14 #include "spdk/string.h" 15 #include "spdk/log.h" 16 #include "spdk_internal/usdt.h" 17 18 #include "nvmf_internal.h" 19 #include "transport.h" 20 21 SPDK_LOG_REGISTER_COMPONENT(nvmf) 22 23 #define SPDK_NVMF_DEFAULT_MAX_SUBSYSTEMS 1024 24 25 static TAILQ_HEAD(, spdk_nvmf_tgt) g_nvmf_tgts = TAILQ_HEAD_INITIALIZER(g_nvmf_tgts); 26 27 typedef void (*nvmf_qpair_disconnect_cpl)(void *ctx, int status); 28 29 /* supplied to a single call to nvmf_qpair_disconnect */ 30 struct nvmf_qpair_disconnect_ctx { 31 struct spdk_nvmf_qpair *qpair; 32 struct spdk_nvmf_ctrlr *ctrlr; 33 nvmf_qpair_disconnect_cb cb_fn; 34 struct spdk_thread *thread; 35 void *ctx; 36 uint16_t qid; 37 }; 38 39 /* 40 * There are several times when we need to iterate through the list of all qpairs and selectively delete them. 41 * In order to do this sequentially without overlap, we must provide a context to recover the next qpair from 42 * to enable calling nvmf_qpair_disconnect on the next desired qpair. 43 */ 44 struct nvmf_qpair_disconnect_many_ctx { 45 struct spdk_nvmf_subsystem *subsystem; 46 struct spdk_nvmf_poll_group *group; 47 spdk_nvmf_poll_group_mod_done cpl_fn; 48 void *cpl_ctx; 49 }; 50 51 static void 52 nvmf_qpair_set_state(struct spdk_nvmf_qpair *qpair, 53 enum spdk_nvmf_qpair_state state) 54 { 55 assert(qpair != NULL); 56 assert(qpair->group->thread == spdk_get_thread()); 57 58 qpair->state = state; 59 } 60 61 static int 62 nvmf_poll_group_poll(void *ctx) 63 { 64 struct spdk_nvmf_poll_group *group = ctx; 65 int rc; 66 int count = 0; 67 struct spdk_nvmf_transport_poll_group *tgroup; 68 69 TAILQ_FOREACH(tgroup, &group->tgroups, link) { 70 rc = nvmf_transport_poll_group_poll(tgroup); 71 if (rc < 0) { 72 return SPDK_POLLER_BUSY; 73 } 74 count += rc; 75 } 76 77 return count > 0 ? SPDK_POLLER_BUSY : SPDK_POLLER_IDLE; 78 } 79 80 /* 81 * Reset and clean up the poll group (I/O channel code will actually free the 82 * group). 83 */ 84 static void 85 nvmf_tgt_cleanup_poll_group(struct spdk_nvmf_poll_group *group) 86 { 87 struct spdk_nvmf_transport_poll_group *tgroup, *tmp; 88 struct spdk_nvmf_subsystem_poll_group *sgroup; 89 uint32_t sid, nsid; 90 91 TAILQ_FOREACH_SAFE(tgroup, &group->tgroups, link, tmp) { 92 TAILQ_REMOVE(&group->tgroups, tgroup, link); 93 nvmf_transport_poll_group_destroy(tgroup); 94 } 95 96 for (sid = 0; sid < group->num_sgroups; sid++) { 97 sgroup = &group->sgroups[sid]; 98 99 assert(sgroup != NULL); 100 101 for (nsid = 0; nsid < sgroup->num_ns; nsid++) { 102 if (sgroup->ns_info[nsid].channel) { 103 spdk_put_io_channel(sgroup->ns_info[nsid].channel); 104 sgroup->ns_info[nsid].channel = NULL; 105 } 106 } 107 108 free(sgroup->ns_info); 109 } 110 111 free(group->sgroups); 112 113 spdk_poller_unregister(&group->poller); 114 115 if (group->destroy_cb_fn) { 116 group->destroy_cb_fn(group->destroy_cb_arg, 0); 117 } 118 } 119 120 /* 121 * Callback to unregister a poll group from the target, and clean up its state. 122 */ 123 static void 124 nvmf_tgt_destroy_poll_group(void *io_device, void *ctx_buf) 125 { 126 struct spdk_nvmf_tgt *tgt = io_device; 127 struct spdk_nvmf_poll_group *group = ctx_buf; 128 129 SPDK_DTRACE_PROBE1_TICKS(nvmf_destroy_poll_group, spdk_thread_get_id(group->thread)); 130 131 pthread_mutex_lock(&tgt->mutex); 132 TAILQ_REMOVE(&tgt->poll_groups, group, link); 133 tgt->num_poll_groups--; 134 pthread_mutex_unlock(&tgt->mutex); 135 136 assert(!(tgt->state == NVMF_TGT_PAUSING || tgt->state == NVMF_TGT_RESUMING)); 137 nvmf_tgt_cleanup_poll_group(group); 138 } 139 140 static int 141 nvmf_poll_group_add_transport(struct spdk_nvmf_poll_group *group, 142 struct spdk_nvmf_transport *transport) 143 { 144 struct spdk_nvmf_transport_poll_group *tgroup; 145 146 TAILQ_FOREACH(tgroup, &group->tgroups, link) { 147 if (tgroup->transport == transport) { 148 /* Transport already in the poll group */ 149 return 0; 150 } 151 } 152 153 tgroup = nvmf_transport_poll_group_create(transport, group); 154 if (!tgroup) { 155 SPDK_ERRLOG("Unable to create poll group for transport\n"); 156 return -1; 157 } 158 SPDK_DTRACE_PROBE2_TICKS(nvmf_transport_poll_group_create, transport, 159 spdk_thread_get_id(group->thread)); 160 161 tgroup->group = group; 162 TAILQ_INSERT_TAIL(&group->tgroups, tgroup, link); 163 164 return 0; 165 } 166 167 static int 168 nvmf_tgt_create_poll_group(void *io_device, void *ctx_buf) 169 { 170 struct spdk_nvmf_tgt *tgt = io_device; 171 struct spdk_nvmf_poll_group *group = ctx_buf; 172 struct spdk_nvmf_transport *transport; 173 struct spdk_nvmf_subsystem *subsystem; 174 struct spdk_thread *thread = spdk_get_thread(); 175 int rc; 176 177 group->tgt = tgt; 178 TAILQ_INIT(&group->tgroups); 179 TAILQ_INIT(&group->qpairs); 180 group->thread = thread; 181 pthread_mutex_init(&group->mutex, NULL); 182 183 group->poller = SPDK_POLLER_REGISTER(nvmf_poll_group_poll, group, 0); 184 185 SPDK_DTRACE_PROBE1_TICKS(nvmf_create_poll_group, spdk_thread_get_id(thread)); 186 187 TAILQ_FOREACH(transport, &tgt->transports, link) { 188 rc = nvmf_poll_group_add_transport(group, transport); 189 if (rc != 0) { 190 nvmf_tgt_cleanup_poll_group(group); 191 return rc; 192 } 193 } 194 195 group->num_sgroups = tgt->max_subsystems; 196 group->sgroups = calloc(tgt->max_subsystems, sizeof(struct spdk_nvmf_subsystem_poll_group)); 197 if (!group->sgroups) { 198 nvmf_tgt_cleanup_poll_group(group); 199 return -ENOMEM; 200 } 201 202 for (subsystem = spdk_nvmf_subsystem_get_first(tgt); 203 subsystem != NULL; 204 subsystem = spdk_nvmf_subsystem_get_next(subsystem)) { 205 if (nvmf_poll_group_add_subsystem(group, subsystem, NULL, NULL) != 0) { 206 nvmf_tgt_cleanup_poll_group(group); 207 return -1; 208 } 209 } 210 211 pthread_mutex_lock(&tgt->mutex); 212 tgt->num_poll_groups++; 213 TAILQ_INSERT_TAIL(&tgt->poll_groups, group, link); 214 pthread_mutex_unlock(&tgt->mutex); 215 216 return 0; 217 } 218 219 static void 220 _nvmf_tgt_disconnect_qpairs(void *ctx) 221 { 222 struct spdk_nvmf_qpair *qpair, *qpair_tmp; 223 struct nvmf_qpair_disconnect_many_ctx *qpair_ctx = ctx; 224 struct spdk_nvmf_poll_group *group = qpair_ctx->group; 225 struct spdk_io_channel *ch; 226 int rc; 227 228 TAILQ_FOREACH_SAFE(qpair, &group->qpairs, link, qpair_tmp) { 229 rc = spdk_nvmf_qpair_disconnect(qpair, NULL, NULL); 230 if (rc && rc != -EINPROGRESS) { 231 break; 232 } 233 } 234 235 if (TAILQ_EMPTY(&group->qpairs)) { 236 /* When the refcount from the channels reaches 0, nvmf_tgt_destroy_poll_group will be called. */ 237 ch = spdk_io_channel_from_ctx(group); 238 spdk_put_io_channel(ch); 239 free(qpair_ctx); 240 return; 241 } 242 243 /* Some qpairs are in process of being disconnected. Send a message and try to remove them again */ 244 spdk_thread_send_msg(spdk_get_thread(), _nvmf_tgt_disconnect_qpairs, ctx); 245 } 246 247 static void 248 nvmf_tgt_destroy_poll_group_qpairs(struct spdk_nvmf_poll_group *group) 249 { 250 struct nvmf_qpair_disconnect_many_ctx *ctx; 251 252 SPDK_DTRACE_PROBE1_TICKS(nvmf_destroy_poll_group_qpairs, spdk_thread_get_id(group->thread)); 253 254 ctx = calloc(1, sizeof(struct nvmf_qpair_disconnect_many_ctx)); 255 if (!ctx) { 256 SPDK_ERRLOG("Failed to allocate memory for destroy poll group ctx\n"); 257 return; 258 } 259 260 ctx->group = group; 261 _nvmf_tgt_disconnect_qpairs(ctx); 262 } 263 264 struct spdk_nvmf_tgt * 265 spdk_nvmf_tgt_create(struct spdk_nvmf_target_opts *opts) 266 { 267 struct spdk_nvmf_tgt *tgt, *tmp_tgt; 268 269 if (strnlen(opts->name, NVMF_TGT_NAME_MAX_LENGTH) == NVMF_TGT_NAME_MAX_LENGTH) { 270 SPDK_ERRLOG("Provided target name exceeds the max length of %u.\n", NVMF_TGT_NAME_MAX_LENGTH); 271 return NULL; 272 } 273 274 TAILQ_FOREACH(tmp_tgt, &g_nvmf_tgts, link) { 275 if (!strncmp(opts->name, tmp_tgt->name, NVMF_TGT_NAME_MAX_LENGTH)) { 276 SPDK_ERRLOG("Provided target name must be unique.\n"); 277 return NULL; 278 } 279 } 280 281 tgt = calloc(1, sizeof(*tgt)); 282 if (!tgt) { 283 return NULL; 284 } 285 286 snprintf(tgt->name, NVMF_TGT_NAME_MAX_LENGTH, "%s", opts->name); 287 288 if (!opts || !opts->max_subsystems) { 289 tgt->max_subsystems = SPDK_NVMF_DEFAULT_MAX_SUBSYSTEMS; 290 } else { 291 tgt->max_subsystems = opts->max_subsystems; 292 } 293 294 if (!opts) { 295 tgt->crdt[0] = 0; 296 tgt->crdt[1] = 0; 297 tgt->crdt[2] = 0; 298 } else { 299 tgt->crdt[0] = opts->crdt[0]; 300 tgt->crdt[1] = opts->crdt[1]; 301 tgt->crdt[2] = opts->crdt[2]; 302 } 303 304 if (!opts) { 305 tgt->discovery_filter = SPDK_NVMF_TGT_DISCOVERY_MATCH_ANY; 306 } else { 307 tgt->discovery_filter = opts->discovery_filter; 308 } 309 310 tgt->discovery_genctr = 0; 311 TAILQ_INIT(&tgt->transports); 312 TAILQ_INIT(&tgt->poll_groups); 313 tgt->num_poll_groups = 0; 314 315 tgt->subsystem_ids = spdk_bit_array_create(tgt->max_subsystems); 316 if (tgt->subsystem_ids == NULL) { 317 free(tgt); 318 return NULL; 319 } 320 321 RB_INIT(&tgt->subsystems); 322 323 pthread_mutex_init(&tgt->mutex, NULL); 324 325 spdk_io_device_register(tgt, 326 nvmf_tgt_create_poll_group, 327 nvmf_tgt_destroy_poll_group, 328 sizeof(struct spdk_nvmf_poll_group), 329 tgt->name); 330 331 tgt->state = NVMF_TGT_RUNNING; 332 333 TAILQ_INSERT_HEAD(&g_nvmf_tgts, tgt, link); 334 335 return tgt; 336 } 337 338 static void 339 _nvmf_tgt_destroy_next_transport(void *ctx) 340 { 341 struct spdk_nvmf_tgt *tgt = ctx; 342 struct spdk_nvmf_transport *transport; 343 344 if (!TAILQ_EMPTY(&tgt->transports)) { 345 transport = TAILQ_FIRST(&tgt->transports); 346 TAILQ_REMOVE(&tgt->transports, transport, link); 347 spdk_nvmf_transport_destroy(transport, _nvmf_tgt_destroy_next_transport, tgt); 348 } else { 349 spdk_nvmf_tgt_destroy_done_fn *destroy_cb_fn = tgt->destroy_cb_fn; 350 void *destroy_cb_arg = tgt->destroy_cb_arg; 351 352 pthread_mutex_destroy(&tgt->mutex); 353 free(tgt); 354 355 if (destroy_cb_fn) { 356 destroy_cb_fn(destroy_cb_arg, 0); 357 } 358 } 359 } 360 361 static void 362 nvmf_tgt_destroy_cb(void *io_device) 363 { 364 struct spdk_nvmf_tgt *tgt = io_device; 365 struct spdk_nvmf_subsystem *subsystem, *subsystem_next; 366 int rc; 367 368 /* We will be freeing subsystems in this loop, so we always need to get the next one 369 * ahead of time, since we can't call get_next() on a subsystem that's been freed. 370 */ 371 for (subsystem = spdk_nvmf_subsystem_get_first(tgt), 372 subsystem_next = spdk_nvmf_subsystem_get_next(subsystem); 373 subsystem != NULL; 374 subsystem = subsystem_next, 375 subsystem_next = spdk_nvmf_subsystem_get_next(subsystem_next)) { 376 nvmf_subsystem_remove_all_listeners(subsystem, true); 377 378 rc = spdk_nvmf_subsystem_destroy(subsystem, nvmf_tgt_destroy_cb, tgt); 379 if (rc) { 380 if (rc == -EINPROGRESS) { 381 /* If rc is -EINPROGRESS, nvmf_tgt_destroy_cb will be called again when subsystem #i 382 * is destroyed, nvmf_tgt_destroy_cb will continue to destroy other subsystems if any */ 383 return; 384 } else { 385 SPDK_ERRLOG("Failed to destroy subsystem %s, rc %d\n", subsystem->subnqn, rc); 386 } 387 } 388 } 389 spdk_bit_array_free(&tgt->subsystem_ids); 390 _nvmf_tgt_destroy_next_transport(tgt); 391 } 392 393 void 394 spdk_nvmf_tgt_destroy(struct spdk_nvmf_tgt *tgt, 395 spdk_nvmf_tgt_destroy_done_fn cb_fn, 396 void *cb_arg) 397 { 398 assert(!(tgt->state == NVMF_TGT_PAUSING || tgt->state == NVMF_TGT_RESUMING)); 399 400 tgt->destroy_cb_fn = cb_fn; 401 tgt->destroy_cb_arg = cb_arg; 402 403 TAILQ_REMOVE(&g_nvmf_tgts, tgt, link); 404 405 spdk_io_device_unregister(tgt, nvmf_tgt_destroy_cb); 406 } 407 408 const char * 409 spdk_nvmf_tgt_get_name(struct spdk_nvmf_tgt *tgt) 410 { 411 return tgt->name; 412 } 413 414 struct spdk_nvmf_tgt * 415 spdk_nvmf_get_tgt(const char *name) 416 { 417 struct spdk_nvmf_tgt *tgt; 418 uint32_t num_targets = 0; 419 420 TAILQ_FOREACH(tgt, &g_nvmf_tgts, link) { 421 if (name) { 422 if (!strncmp(tgt->name, name, NVMF_TGT_NAME_MAX_LENGTH)) { 423 return tgt; 424 } 425 } 426 num_targets++; 427 } 428 429 /* 430 * special case. If there is only one target and 431 * no name was specified, return the only available 432 * target. If there is more than one target, name must 433 * be specified. 434 */ 435 if (!name && num_targets == 1) { 436 return TAILQ_FIRST(&g_nvmf_tgts); 437 } 438 439 return NULL; 440 } 441 442 struct spdk_nvmf_tgt * 443 spdk_nvmf_get_first_tgt(void) 444 { 445 return TAILQ_FIRST(&g_nvmf_tgts); 446 } 447 448 struct spdk_nvmf_tgt * 449 spdk_nvmf_get_next_tgt(struct spdk_nvmf_tgt *prev) 450 { 451 return TAILQ_NEXT(prev, link); 452 } 453 454 static void 455 nvmf_write_subsystem_config_json(struct spdk_json_write_ctx *w, 456 struct spdk_nvmf_subsystem *subsystem) 457 { 458 struct spdk_nvmf_host *host; 459 struct spdk_nvmf_subsystem_listener *listener; 460 const struct spdk_nvme_transport_id *trid; 461 struct spdk_nvmf_ns *ns; 462 struct spdk_nvmf_ns_opts ns_opts; 463 uint32_t max_namespaces; 464 char uuid_str[SPDK_UUID_STRING_LEN]; 465 struct spdk_nvmf_transport *transport; 466 467 if (spdk_nvmf_subsystem_get_type(subsystem) != SPDK_NVMF_SUBTYPE_NVME) { 468 return; 469 } 470 471 /* { */ 472 spdk_json_write_object_begin(w); 473 spdk_json_write_named_string(w, "method", "nvmf_create_subsystem"); 474 475 /* "params" : { */ 476 spdk_json_write_named_object_begin(w, "params"); 477 spdk_json_write_named_string(w, "nqn", spdk_nvmf_subsystem_get_nqn(subsystem)); 478 spdk_json_write_named_bool(w, "allow_any_host", spdk_nvmf_subsystem_get_allow_any_host(subsystem)); 479 spdk_json_write_named_string(w, "serial_number", spdk_nvmf_subsystem_get_sn(subsystem)); 480 spdk_json_write_named_string(w, "model_number", spdk_nvmf_subsystem_get_mn(subsystem)); 481 482 max_namespaces = spdk_nvmf_subsystem_get_max_namespaces(subsystem); 483 if (max_namespaces != 0) { 484 spdk_json_write_named_uint32(w, "max_namespaces", max_namespaces); 485 } 486 487 spdk_json_write_named_uint32(w, "min_cntlid", spdk_nvmf_subsystem_get_min_cntlid(subsystem)); 488 spdk_json_write_named_uint32(w, "max_cntlid", spdk_nvmf_subsystem_get_max_cntlid(subsystem)); 489 spdk_json_write_named_bool(w, "ana_reporting", nvmf_subsystem_get_ana_reporting(subsystem)); 490 491 /* } "params" */ 492 spdk_json_write_object_end(w); 493 494 /* } */ 495 spdk_json_write_object_end(w); 496 497 for (host = spdk_nvmf_subsystem_get_first_host(subsystem); host != NULL; 498 host = spdk_nvmf_subsystem_get_next_host(subsystem, host)) { 499 500 spdk_json_write_object_begin(w); 501 spdk_json_write_named_string(w, "method", "nvmf_subsystem_add_host"); 502 503 /* "params" : { */ 504 spdk_json_write_named_object_begin(w, "params"); 505 506 spdk_json_write_named_string(w, "nqn", spdk_nvmf_subsystem_get_nqn(subsystem)); 507 spdk_json_write_named_string(w, "host", spdk_nvmf_host_get_nqn(host)); 508 509 TAILQ_FOREACH(transport, &subsystem->tgt->transports, link) { 510 if (transport->ops->subsystem_dump_host != NULL) { 511 transport->ops->subsystem_dump_host(transport, subsystem, host->nqn, w); 512 } 513 } 514 515 /* } "params" */ 516 spdk_json_write_object_end(w); 517 518 /* } */ 519 spdk_json_write_object_end(w); 520 } 521 522 for (ns = spdk_nvmf_subsystem_get_first_ns(subsystem); ns != NULL; 523 ns = spdk_nvmf_subsystem_get_next_ns(subsystem, ns)) { 524 spdk_nvmf_ns_get_opts(ns, &ns_opts, sizeof(ns_opts)); 525 526 spdk_json_write_object_begin(w); 527 spdk_json_write_named_string(w, "method", "nvmf_subsystem_add_ns"); 528 529 /* "params" : { */ 530 spdk_json_write_named_object_begin(w, "params"); 531 532 spdk_json_write_named_string(w, "nqn", spdk_nvmf_subsystem_get_nqn(subsystem)); 533 534 /* "namespace" : { */ 535 spdk_json_write_named_object_begin(w, "namespace"); 536 537 spdk_json_write_named_uint32(w, "nsid", spdk_nvmf_ns_get_id(ns)); 538 spdk_json_write_named_string(w, "bdev_name", spdk_bdev_get_name(spdk_nvmf_ns_get_bdev(ns))); 539 540 if (!spdk_mem_all_zero(ns_opts.nguid, sizeof(ns_opts.nguid))) { 541 SPDK_STATIC_ASSERT(sizeof(ns_opts.nguid) == sizeof(uint64_t) * 2, "size mismatch"); 542 spdk_json_write_named_string_fmt(w, "nguid", "%016"PRIX64"%016"PRIX64, from_be64(&ns_opts.nguid[0]), 543 from_be64(&ns_opts.nguid[8])); 544 } 545 546 if (!spdk_mem_all_zero(ns_opts.eui64, sizeof(ns_opts.eui64))) { 547 SPDK_STATIC_ASSERT(sizeof(ns_opts.eui64) == sizeof(uint64_t), "size mismatch"); 548 spdk_json_write_named_string_fmt(w, "eui64", "%016"PRIX64, from_be64(&ns_opts.eui64)); 549 } 550 551 if (!spdk_uuid_is_null(&ns_opts.uuid)) { 552 spdk_uuid_fmt_lower(uuid_str, sizeof(uuid_str), &ns_opts.uuid); 553 spdk_json_write_named_string(w, "uuid", uuid_str); 554 } 555 556 if (nvmf_subsystem_get_ana_reporting(subsystem)) { 557 spdk_json_write_named_uint32(w, "anagrpid", ns_opts.anagrpid); 558 } 559 560 /* "namespace" */ 561 spdk_json_write_object_end(w); 562 563 /* } "params" */ 564 spdk_json_write_object_end(w); 565 566 /* } */ 567 spdk_json_write_object_end(w); 568 } 569 570 for (listener = spdk_nvmf_subsystem_get_first_listener(subsystem); listener != NULL; 571 listener = spdk_nvmf_subsystem_get_next_listener(subsystem, listener)) { 572 trid = spdk_nvmf_subsystem_listener_get_trid(listener); 573 574 spdk_json_write_object_begin(w); 575 spdk_json_write_named_string(w, "method", "nvmf_subsystem_add_listener"); 576 577 /* "params" : { */ 578 spdk_json_write_named_object_begin(w, "params"); 579 580 spdk_json_write_named_string(w, "nqn", spdk_nvmf_subsystem_get_nqn(subsystem)); 581 nvmf_transport_listen_dump_opts(listener->transport, trid, w); 582 spdk_json_write_named_bool(w, "secure_channel", listener->opts.secure_channel); 583 584 /* } "params" */ 585 spdk_json_write_object_end(w); 586 587 /* } */ 588 spdk_json_write_object_end(w); 589 } 590 591 } 592 593 void 594 spdk_nvmf_tgt_write_config_json(struct spdk_json_write_ctx *w, struct spdk_nvmf_tgt *tgt) 595 { 596 struct spdk_nvmf_subsystem *subsystem; 597 struct spdk_nvmf_transport *transport; 598 599 spdk_json_write_object_begin(w); 600 spdk_json_write_named_string(w, "method", "nvmf_set_max_subsystems"); 601 602 spdk_json_write_named_object_begin(w, "params"); 603 spdk_json_write_named_uint32(w, "max_subsystems", tgt->max_subsystems); 604 spdk_json_write_object_end(w); 605 606 spdk_json_write_object_end(w); 607 608 spdk_json_write_object_begin(w); 609 spdk_json_write_named_string(w, "method", "nvmf_set_crdt"); 610 spdk_json_write_named_object_begin(w, "params"); 611 spdk_json_write_named_uint32(w, "crdt1", tgt->crdt[0]); 612 spdk_json_write_named_uint32(w, "crdt2", tgt->crdt[1]); 613 spdk_json_write_named_uint32(w, "crdt3", tgt->crdt[2]); 614 spdk_json_write_object_end(w); 615 spdk_json_write_object_end(w); 616 617 /* write transports */ 618 TAILQ_FOREACH(transport, &tgt->transports, link) { 619 spdk_json_write_object_begin(w); 620 spdk_json_write_named_string(w, "method", "nvmf_create_transport"); 621 nvmf_transport_dump_opts(transport, w, true); 622 spdk_json_write_object_end(w); 623 } 624 625 subsystem = spdk_nvmf_subsystem_get_first(tgt); 626 while (subsystem) { 627 nvmf_write_subsystem_config_json(w, subsystem); 628 subsystem = spdk_nvmf_subsystem_get_next(subsystem); 629 } 630 } 631 632 static void 633 nvmf_listen_opts_copy(struct spdk_nvmf_listen_opts *opts, 634 const struct spdk_nvmf_listen_opts *opts_src, size_t opts_size) 635 { 636 assert(opts); 637 assert(opts_src); 638 639 opts->opts_size = opts_size; 640 641 #define SET_FIELD(field) \ 642 if (offsetof(struct spdk_nvmf_listen_opts, field) + sizeof(opts->field) <= opts_size) { \ 643 opts->field = opts_src->field; \ 644 } \ 645 646 SET_FIELD(transport_specific); 647 SET_FIELD(secure_channel); 648 #undef SET_FIELD 649 650 /* Do not remove this statement, you should always update this statement when you adding a new field, 651 * and do not forget to add the SET_FIELD statement for your added field. */ 652 SPDK_STATIC_ASSERT(sizeof(struct spdk_nvmf_listen_opts) == 17, "Incorrect size"); 653 } 654 655 void 656 spdk_nvmf_listen_opts_init(struct spdk_nvmf_listen_opts *opts, size_t opts_size) 657 { 658 struct spdk_nvmf_listen_opts opts_local = {}; 659 660 /* local version of opts should have defaults set here */ 661 662 nvmf_listen_opts_copy(opts, &opts_local, opts_size); 663 } 664 665 int 666 spdk_nvmf_tgt_listen_ext(struct spdk_nvmf_tgt *tgt, const struct spdk_nvme_transport_id *trid, 667 struct spdk_nvmf_listen_opts *opts) 668 { 669 struct spdk_nvmf_transport *transport; 670 int rc; 671 struct spdk_nvmf_listen_opts opts_local = {}; 672 673 if (!opts) { 674 SPDK_ERRLOG("opts should not be NULL\n"); 675 return -EINVAL; 676 } 677 678 if (!opts->opts_size) { 679 SPDK_ERRLOG("The opts_size in opts structure should not be zero\n"); 680 return -EINVAL; 681 } 682 683 transport = spdk_nvmf_tgt_get_transport(tgt, trid->trstring); 684 if (!transport) { 685 SPDK_ERRLOG("Unable to find %s transport. The transport must be created first also make sure it is properly registered.\n", 686 trid->trstring); 687 return -EINVAL; 688 } 689 690 nvmf_listen_opts_copy(&opts_local, opts, opts->opts_size); 691 rc = spdk_nvmf_transport_listen(transport, trid, &opts_local); 692 if (rc < 0) { 693 SPDK_ERRLOG("Unable to listen on address '%s'\n", trid->traddr); 694 } 695 696 return rc; 697 } 698 699 int 700 spdk_nvmf_tgt_stop_listen(struct spdk_nvmf_tgt *tgt, 701 struct spdk_nvme_transport_id *trid) 702 { 703 struct spdk_nvmf_transport *transport; 704 int rc; 705 706 transport = spdk_nvmf_tgt_get_transport(tgt, trid->trstring); 707 if (!transport) { 708 SPDK_ERRLOG("Unable to find %s transport. The transport must be created first also make sure it is properly registered.\n", 709 trid->trstring); 710 return -EINVAL; 711 } 712 713 rc = spdk_nvmf_transport_stop_listen(transport, trid); 714 if (rc < 0) { 715 SPDK_ERRLOG("Failed to stop listening on address '%s'\n", trid->traddr); 716 return rc; 717 } 718 return 0; 719 } 720 721 struct spdk_nvmf_tgt_add_transport_ctx { 722 struct spdk_nvmf_tgt *tgt; 723 struct spdk_nvmf_transport *transport; 724 spdk_nvmf_tgt_add_transport_done_fn cb_fn; 725 void *cb_arg; 726 int status; 727 }; 728 729 static void 730 _nvmf_tgt_remove_transport_done(struct spdk_io_channel_iter *i, int status) 731 { 732 struct spdk_nvmf_tgt_add_transport_ctx *ctx = spdk_io_channel_iter_get_ctx(i); 733 734 ctx->cb_fn(ctx->cb_arg, ctx->status); 735 free(ctx); 736 } 737 738 static void 739 _nvmf_tgt_remove_transport(struct spdk_io_channel_iter *i) 740 { 741 struct spdk_nvmf_tgt_add_transport_ctx *ctx = spdk_io_channel_iter_get_ctx(i); 742 struct spdk_io_channel *ch = spdk_io_channel_iter_get_channel(i); 743 struct spdk_nvmf_poll_group *group = spdk_io_channel_get_ctx(ch); 744 struct spdk_nvmf_transport_poll_group *tgroup, *tmp; 745 746 TAILQ_FOREACH_SAFE(tgroup, &group->tgroups, link, tmp) { 747 if (tgroup->transport == ctx->transport) { 748 TAILQ_REMOVE(&group->tgroups, tgroup, link); 749 nvmf_transport_poll_group_destroy(tgroup); 750 } 751 } 752 753 spdk_for_each_channel_continue(i, 0); 754 } 755 756 static void 757 _nvmf_tgt_add_transport_done(struct spdk_io_channel_iter *i, int status) 758 { 759 struct spdk_nvmf_tgt_add_transport_ctx *ctx = spdk_io_channel_iter_get_ctx(i); 760 761 if (status) { 762 ctx->status = status; 763 spdk_for_each_channel(ctx->tgt, 764 _nvmf_tgt_remove_transport, 765 ctx, 766 _nvmf_tgt_remove_transport_done); 767 return; 768 } 769 770 ctx->transport->tgt = ctx->tgt; 771 TAILQ_INSERT_TAIL(&ctx->tgt->transports, ctx->transport, link); 772 ctx->cb_fn(ctx->cb_arg, status); 773 free(ctx); 774 } 775 776 static void 777 _nvmf_tgt_add_transport(struct spdk_io_channel_iter *i) 778 { 779 struct spdk_nvmf_tgt_add_transport_ctx *ctx = spdk_io_channel_iter_get_ctx(i); 780 struct spdk_io_channel *ch = spdk_io_channel_iter_get_channel(i); 781 struct spdk_nvmf_poll_group *group = spdk_io_channel_get_ctx(ch); 782 int rc; 783 784 rc = nvmf_poll_group_add_transport(group, ctx->transport); 785 spdk_for_each_channel_continue(i, rc); 786 } 787 788 void 789 spdk_nvmf_tgt_add_transport(struct spdk_nvmf_tgt *tgt, 790 struct spdk_nvmf_transport *transport, 791 spdk_nvmf_tgt_add_transport_done_fn cb_fn, 792 void *cb_arg) 793 { 794 struct spdk_nvmf_tgt_add_transport_ctx *ctx; 795 796 SPDK_DTRACE_PROBE2_TICKS(nvmf_tgt_add_transport, transport, tgt->name); 797 798 if (spdk_nvmf_tgt_get_transport(tgt, transport->ops->name)) { 799 cb_fn(cb_arg, -EEXIST); 800 return; /* transport already created */ 801 } 802 803 ctx = calloc(1, sizeof(*ctx)); 804 if (!ctx) { 805 cb_fn(cb_arg, -ENOMEM); 806 return; 807 } 808 809 ctx->tgt = tgt; 810 ctx->transport = transport; 811 ctx->cb_fn = cb_fn; 812 ctx->cb_arg = cb_arg; 813 814 spdk_for_each_channel(tgt, 815 _nvmf_tgt_add_transport, 816 ctx, 817 _nvmf_tgt_add_transport_done); 818 } 819 820 struct nvmf_tgt_pause_ctx { 821 struct spdk_nvmf_tgt *tgt; 822 spdk_nvmf_tgt_pause_polling_cb_fn cb_fn; 823 void *cb_arg; 824 }; 825 826 static void 827 _nvmf_tgt_pause_polling_done(struct spdk_io_channel_iter *i, int status) 828 { 829 struct nvmf_tgt_pause_ctx *ctx = spdk_io_channel_iter_get_ctx(i); 830 831 ctx->tgt->state = NVMF_TGT_PAUSED; 832 833 ctx->cb_fn(ctx->cb_arg, status); 834 free(ctx); 835 } 836 837 static void 838 _nvmf_tgt_pause_polling(struct spdk_io_channel_iter *i) 839 { 840 struct spdk_io_channel *ch = spdk_io_channel_iter_get_channel(i); 841 struct spdk_nvmf_poll_group *group = spdk_io_channel_get_ctx(ch); 842 843 spdk_poller_unregister(&group->poller); 844 845 spdk_for_each_channel_continue(i, 0); 846 } 847 848 int 849 spdk_nvmf_tgt_pause_polling(struct spdk_nvmf_tgt *tgt, spdk_nvmf_tgt_pause_polling_cb_fn cb_fn, 850 void *cb_arg) 851 { 852 struct nvmf_tgt_pause_ctx *ctx; 853 854 SPDK_DTRACE_PROBE2_TICKS(nvmf_tgt_pause_polling, tgt, tgt->name); 855 856 switch (tgt->state) { 857 case NVMF_TGT_PAUSING: 858 case NVMF_TGT_RESUMING: 859 return -EBUSY; 860 case NVMF_TGT_RUNNING: 861 break; 862 default: 863 return -EINVAL; 864 } 865 866 ctx = calloc(1, sizeof(*ctx)); 867 if (!ctx) { 868 return -ENOMEM; 869 } 870 871 872 tgt->state = NVMF_TGT_PAUSING; 873 874 ctx->tgt = tgt; 875 ctx->cb_fn = cb_fn; 876 ctx->cb_arg = cb_arg; 877 878 spdk_for_each_channel(tgt, 879 _nvmf_tgt_pause_polling, 880 ctx, 881 _nvmf_tgt_pause_polling_done); 882 return 0; 883 } 884 885 static void 886 _nvmf_tgt_resume_polling_done(struct spdk_io_channel_iter *i, int status) 887 { 888 struct nvmf_tgt_pause_ctx *ctx = spdk_io_channel_iter_get_ctx(i); 889 890 ctx->tgt->state = NVMF_TGT_RUNNING; 891 892 ctx->cb_fn(ctx->cb_arg, status); 893 free(ctx); 894 } 895 896 static void 897 _nvmf_tgt_resume_polling(struct spdk_io_channel_iter *i) 898 { 899 struct spdk_io_channel *ch = spdk_io_channel_iter_get_channel(i); 900 struct spdk_nvmf_poll_group *group = spdk_io_channel_get_ctx(ch); 901 902 assert(group->poller == NULL); 903 group->poller = SPDK_POLLER_REGISTER(nvmf_poll_group_poll, group, 0); 904 905 spdk_for_each_channel_continue(i, 0); 906 } 907 908 int 909 spdk_nvmf_tgt_resume_polling(struct spdk_nvmf_tgt *tgt, spdk_nvmf_tgt_resume_polling_cb_fn cb_fn, 910 void *cb_arg) 911 { 912 struct nvmf_tgt_pause_ctx *ctx; 913 914 SPDK_DTRACE_PROBE2_TICKS(nvmf_tgt_resume_polling, tgt, tgt->name); 915 916 switch (tgt->state) { 917 case NVMF_TGT_PAUSING: 918 case NVMF_TGT_RESUMING: 919 return -EBUSY; 920 case NVMF_TGT_PAUSED: 921 break; 922 default: 923 return -EINVAL; 924 } 925 926 ctx = calloc(1, sizeof(*ctx)); 927 if (!ctx) { 928 return -ENOMEM; 929 } 930 931 tgt->state = NVMF_TGT_RESUMING; 932 933 ctx->tgt = tgt; 934 ctx->cb_fn = cb_fn; 935 ctx->cb_arg = cb_arg; 936 937 spdk_for_each_channel(tgt, 938 _nvmf_tgt_resume_polling, 939 ctx, 940 _nvmf_tgt_resume_polling_done); 941 return 0; 942 } 943 944 struct spdk_nvmf_subsystem * 945 spdk_nvmf_tgt_find_subsystem(struct spdk_nvmf_tgt *tgt, const char *subnqn) 946 { 947 struct spdk_nvmf_subsystem subsystem; 948 949 if (!subnqn) { 950 return NULL; 951 } 952 953 /* Ensure that subnqn is null terminated */ 954 if (!memchr(subnqn, '\0', SPDK_NVMF_NQN_MAX_LEN + 1)) { 955 SPDK_ERRLOG("Connect SUBNQN is not null terminated\n"); 956 return NULL; 957 } 958 959 snprintf(subsystem.subnqn, sizeof(subsystem.subnqn), "%s", subnqn); 960 return RB_FIND(subsystem_tree, &tgt->subsystems, &subsystem); 961 } 962 963 struct spdk_nvmf_transport * 964 spdk_nvmf_tgt_get_transport(struct spdk_nvmf_tgt *tgt, const char *transport_name) 965 { 966 struct spdk_nvmf_transport *transport; 967 968 TAILQ_FOREACH(transport, &tgt->transports, link) { 969 if (!strncasecmp(transport->ops->name, transport_name, SPDK_NVMF_TRSTRING_MAX_LEN)) { 970 return transport; 971 } 972 } 973 return NULL; 974 } 975 976 struct nvmf_new_qpair_ctx { 977 struct spdk_nvmf_qpair *qpair; 978 struct spdk_nvmf_poll_group *group; 979 }; 980 981 static void 982 _nvmf_poll_group_add(void *_ctx) 983 { 984 struct nvmf_new_qpair_ctx *ctx = _ctx; 985 struct spdk_nvmf_qpair *qpair = ctx->qpair; 986 struct spdk_nvmf_poll_group *group = ctx->group; 987 988 free(_ctx); 989 990 if (spdk_nvmf_poll_group_add(group, qpair) != 0) { 991 SPDK_ERRLOG("Unable to add the qpair to a poll group.\n"); 992 spdk_nvmf_qpair_disconnect(qpair, NULL, NULL); 993 } 994 } 995 996 void 997 spdk_nvmf_tgt_new_qpair(struct spdk_nvmf_tgt *tgt, struct spdk_nvmf_qpair *qpair) 998 { 999 struct spdk_nvmf_poll_group *group; 1000 struct nvmf_new_qpair_ctx *ctx; 1001 1002 group = spdk_nvmf_get_optimal_poll_group(qpair); 1003 if (group == NULL) { 1004 if (tgt->next_poll_group == NULL) { 1005 tgt->next_poll_group = TAILQ_FIRST(&tgt->poll_groups); 1006 if (tgt->next_poll_group == NULL) { 1007 SPDK_ERRLOG("No poll groups exist.\n"); 1008 spdk_nvmf_qpair_disconnect(qpair, NULL, NULL); 1009 return; 1010 } 1011 } 1012 group = tgt->next_poll_group; 1013 tgt->next_poll_group = TAILQ_NEXT(group, link); 1014 } 1015 1016 ctx = calloc(1, sizeof(*ctx)); 1017 if (!ctx) { 1018 SPDK_ERRLOG("Unable to send message to poll group.\n"); 1019 spdk_nvmf_qpair_disconnect(qpair, NULL, NULL); 1020 return; 1021 } 1022 1023 ctx->qpair = qpair; 1024 ctx->group = group; 1025 1026 pthread_mutex_lock(&group->mutex); 1027 group->current_unassociated_qpairs++; 1028 pthread_mutex_unlock(&group->mutex); 1029 1030 spdk_thread_send_msg(group->thread, _nvmf_poll_group_add, ctx); 1031 } 1032 1033 struct spdk_nvmf_poll_group * 1034 spdk_nvmf_poll_group_create(struct spdk_nvmf_tgt *tgt) 1035 { 1036 struct spdk_io_channel *ch; 1037 1038 ch = spdk_get_io_channel(tgt); 1039 if (!ch) { 1040 SPDK_ERRLOG("Unable to get I/O channel for target\n"); 1041 return NULL; 1042 } 1043 1044 return spdk_io_channel_get_ctx(ch); 1045 } 1046 1047 void 1048 spdk_nvmf_poll_group_destroy(struct spdk_nvmf_poll_group *group, 1049 spdk_nvmf_poll_group_destroy_done_fn cb_fn, 1050 void *cb_arg) 1051 { 1052 assert(group->destroy_cb_fn == NULL); 1053 group->destroy_cb_fn = cb_fn; 1054 group->destroy_cb_arg = cb_arg; 1055 1056 /* This function will put the io_channel associated with this poll group */ 1057 nvmf_tgt_destroy_poll_group_qpairs(group); 1058 } 1059 1060 int 1061 spdk_nvmf_poll_group_add(struct spdk_nvmf_poll_group *group, 1062 struct spdk_nvmf_qpair *qpair) 1063 { 1064 int rc = -1; 1065 struct spdk_nvmf_transport_poll_group *tgroup; 1066 1067 TAILQ_INIT(&qpair->outstanding); 1068 qpair->group = group; 1069 qpair->ctrlr = NULL; 1070 qpair->disconnect_started = false; 1071 1072 TAILQ_FOREACH(tgroup, &group->tgroups, link) { 1073 if (tgroup->transport == qpair->transport) { 1074 rc = nvmf_transport_poll_group_add(tgroup, qpair); 1075 break; 1076 } 1077 } 1078 1079 /* We add the qpair to the group only it is successfully added into the tgroup */ 1080 if (rc == 0) { 1081 SPDK_DTRACE_PROBE2_TICKS(nvmf_poll_group_add_qpair, qpair, spdk_thread_get_id(group->thread)); 1082 TAILQ_INSERT_TAIL(&group->qpairs, qpair, link); 1083 nvmf_qpair_set_state(qpair, SPDK_NVMF_QPAIR_ACTIVE); 1084 } 1085 1086 return rc; 1087 } 1088 1089 static void 1090 _nvmf_ctrlr_destruct(void *ctx) 1091 { 1092 struct spdk_nvmf_ctrlr *ctrlr = ctx; 1093 1094 nvmf_ctrlr_destruct(ctrlr); 1095 } 1096 1097 static void 1098 _nvmf_ctrlr_free_from_qpair(void *ctx) 1099 { 1100 struct nvmf_qpair_disconnect_ctx *qpair_ctx = ctx; 1101 struct spdk_nvmf_ctrlr *ctrlr = qpair_ctx->ctrlr; 1102 uint32_t count; 1103 1104 spdk_bit_array_clear(ctrlr->qpair_mask, qpair_ctx->qid); 1105 count = spdk_bit_array_count_set(ctrlr->qpair_mask); 1106 if (count == 0) { 1107 assert(!ctrlr->in_destruct); 1108 SPDK_DEBUGLOG(nvmf, "Last qpair %u, destroy ctrlr 0x%hx\n", qpair_ctx->qid, ctrlr->cntlid); 1109 ctrlr->in_destruct = true; 1110 spdk_thread_send_msg(ctrlr->subsys->thread, _nvmf_ctrlr_destruct, ctrlr); 1111 } 1112 free(qpair_ctx); 1113 } 1114 1115 static void 1116 _nvmf_transport_qpair_fini_complete(void *cb_ctx) 1117 { 1118 struct nvmf_qpair_disconnect_ctx *qpair_ctx = cb_ctx; 1119 struct spdk_nvmf_ctrlr *ctrlr; 1120 /* Store cb args since cb_ctx can be freed in _nvmf_ctrlr_free_from_qpair */ 1121 nvmf_qpair_disconnect_cb cb_fn = qpair_ctx->cb_fn; 1122 void *cb_arg = qpair_ctx->ctx; 1123 struct spdk_thread *cb_thread = qpair_ctx->thread; 1124 1125 ctrlr = qpair_ctx->ctrlr; 1126 SPDK_DEBUGLOG(nvmf, "Finish destroying qid %u\n", qpair_ctx->qid); 1127 1128 if (ctrlr) { 1129 if (qpair_ctx->qid == 0) { 1130 /* Admin qpair is removed, so set the pointer to NULL. 1131 * This operation is safe since we are on ctrlr thread now, admin qpair's thread is the same 1132 * as controller's thread */ 1133 assert(ctrlr->thread == spdk_get_thread()); 1134 ctrlr->admin_qpair = NULL; 1135 } 1136 /* Free qpair id from controller's bit mask and destroy the controller if it is the last qpair */ 1137 if (ctrlr->thread) { 1138 spdk_thread_send_msg(ctrlr->thread, _nvmf_ctrlr_free_from_qpair, qpair_ctx); 1139 } else { 1140 _nvmf_ctrlr_free_from_qpair(qpair_ctx); 1141 } 1142 } else { 1143 free(qpair_ctx); 1144 } 1145 1146 if (cb_fn) { 1147 spdk_thread_send_msg(cb_thread, cb_fn, cb_arg); 1148 } 1149 } 1150 1151 void 1152 spdk_nvmf_poll_group_remove(struct spdk_nvmf_qpair *qpair) 1153 { 1154 struct spdk_nvmf_transport_poll_group *tgroup; 1155 int rc; 1156 1157 SPDK_DTRACE_PROBE2_TICKS(nvmf_poll_group_remove_qpair, qpair, 1158 spdk_thread_get_id(qpair->group->thread)); 1159 nvmf_qpair_set_state(qpair, SPDK_NVMF_QPAIR_ERROR); 1160 1161 /* Find the tgroup and remove the qpair from the tgroup */ 1162 TAILQ_FOREACH(tgroup, &qpair->group->tgroups, link) { 1163 if (tgroup->transport == qpair->transport) { 1164 rc = nvmf_transport_poll_group_remove(tgroup, qpair); 1165 if (rc && (rc != ENOTSUP)) { 1166 SPDK_ERRLOG("Cannot remove qpair=%p from transport group=%p\n", 1167 qpair, tgroup); 1168 } 1169 break; 1170 } 1171 } 1172 1173 TAILQ_REMOVE(&qpair->group->qpairs, qpair, link); 1174 qpair->group = NULL; 1175 } 1176 1177 static void 1178 _nvmf_qpair_sgroup_req_clean(struct spdk_nvmf_subsystem_poll_group *sgroup, 1179 const struct spdk_nvmf_qpair *qpair) 1180 { 1181 struct spdk_nvmf_request *req, *tmp; 1182 TAILQ_FOREACH_SAFE(req, &sgroup->queued, link, tmp) { 1183 if (req->qpair == qpair) { 1184 TAILQ_REMOVE(&sgroup->queued, req, link); 1185 if (nvmf_transport_req_free(req)) { 1186 SPDK_ERRLOG("Transport request free error!\n"); 1187 } 1188 } 1189 } 1190 } 1191 1192 static void 1193 _nvmf_qpair_destroy(void *ctx, int status) 1194 { 1195 struct nvmf_qpair_disconnect_ctx *qpair_ctx = ctx; 1196 struct spdk_nvmf_qpair *qpair = qpair_ctx->qpair; 1197 struct spdk_nvmf_ctrlr *ctrlr = qpair->ctrlr; 1198 struct spdk_nvmf_subsystem_poll_group *sgroup; 1199 uint32_t sid; 1200 1201 assert(qpair->state == SPDK_NVMF_QPAIR_DEACTIVATING); 1202 qpair_ctx->qid = qpair->qid; 1203 1204 if (qpair->connect_received) { 1205 if (0 == qpair->qid) { 1206 assert(qpair->group->stat.current_admin_qpairs > 0); 1207 qpair->group->stat.current_admin_qpairs--; 1208 } else { 1209 assert(qpair->group->stat.current_io_qpairs > 0); 1210 qpair->group->stat.current_io_qpairs--; 1211 } 1212 } else { 1213 pthread_mutex_lock(&qpair->group->mutex); 1214 qpair->group->current_unassociated_qpairs--; 1215 pthread_mutex_unlock(&qpair->group->mutex); 1216 } 1217 1218 if (ctrlr) { 1219 sgroup = &qpair->group->sgroups[ctrlr->subsys->id]; 1220 _nvmf_qpair_sgroup_req_clean(sgroup, qpair); 1221 } else { 1222 for (sid = 0; sid < qpair->group->num_sgroups; sid++) { 1223 sgroup = &qpair->group->sgroups[sid]; 1224 assert(sgroup != NULL); 1225 _nvmf_qpair_sgroup_req_clean(sgroup, qpair); 1226 } 1227 } 1228 1229 qpair_ctx->ctrlr = ctrlr; 1230 spdk_nvmf_poll_group_remove(qpair); 1231 nvmf_transport_qpair_fini(qpair, _nvmf_transport_qpair_fini_complete, qpair_ctx); 1232 } 1233 1234 static void 1235 _nvmf_qpair_disconnect_msg(void *ctx) 1236 { 1237 struct nvmf_qpair_disconnect_ctx *qpair_ctx = ctx; 1238 1239 spdk_nvmf_qpair_disconnect(qpair_ctx->qpair, qpair_ctx->cb_fn, qpair_ctx->ctx); 1240 free(ctx); 1241 } 1242 1243 SPDK_LOG_DEPRECATION_REGISTER(spdk_nvmf_qpair_disconnect, "cb_fn and ctx are deprecated", "v23.09", 1244 0); 1245 1246 int 1247 spdk_nvmf_qpair_disconnect(struct spdk_nvmf_qpair *qpair, nvmf_qpair_disconnect_cb cb_fn, void *ctx) 1248 { 1249 struct spdk_nvmf_poll_group *group = qpair->group; 1250 struct nvmf_qpair_disconnect_ctx *qpair_ctx; 1251 1252 if (__atomic_test_and_set(&qpair->disconnect_started, __ATOMIC_RELAXED)) { 1253 return -EINPROGRESS; 1254 } 1255 1256 if (cb_fn || ctx) { 1257 SPDK_LOG_DEPRECATED(spdk_nvmf_qpair_disconnect); 1258 } 1259 1260 /* If we get a qpair in the uninitialized state, we can just destroy it immediately */ 1261 if (qpair->state == SPDK_NVMF_QPAIR_UNINITIALIZED) { 1262 nvmf_transport_qpair_fini(qpair, NULL, NULL); 1263 if (cb_fn) { 1264 cb_fn(ctx); 1265 } 1266 return 0; 1267 } 1268 1269 assert(group != NULL); 1270 if (spdk_get_thread() != group->thread) { 1271 /* clear the atomic so we can set it on the next call on the proper thread. */ 1272 __atomic_clear(&qpair->disconnect_started, __ATOMIC_RELAXED); 1273 qpair_ctx = calloc(1, sizeof(struct nvmf_qpair_disconnect_ctx)); 1274 if (!qpair_ctx) { 1275 SPDK_ERRLOG("Unable to allocate context for nvmf_qpair_disconnect\n"); 1276 return -ENOMEM; 1277 } 1278 qpair_ctx->qpair = qpair; 1279 qpair_ctx->cb_fn = cb_fn; 1280 qpair_ctx->thread = group->thread; 1281 qpair_ctx->ctx = ctx; 1282 spdk_thread_send_msg(group->thread, _nvmf_qpair_disconnect_msg, qpair_ctx); 1283 return 0; 1284 } 1285 1286 SPDK_DTRACE_PROBE2_TICKS(nvmf_qpair_disconnect, qpair, spdk_thread_get_id(group->thread)); 1287 assert(qpair->state == SPDK_NVMF_QPAIR_ACTIVE); 1288 nvmf_qpair_set_state(qpair, SPDK_NVMF_QPAIR_DEACTIVATING); 1289 1290 qpair_ctx = calloc(1, sizeof(struct nvmf_qpair_disconnect_ctx)); 1291 if (!qpair_ctx) { 1292 SPDK_ERRLOG("Unable to allocate context for nvmf_qpair_disconnect\n"); 1293 return -ENOMEM; 1294 } 1295 1296 qpair_ctx->qpair = qpair; 1297 qpair_ctx->cb_fn = cb_fn; 1298 qpair_ctx->thread = group->thread; 1299 qpair_ctx->ctx = ctx; 1300 1301 /* Check for outstanding I/O */ 1302 if (!TAILQ_EMPTY(&qpair->outstanding)) { 1303 SPDK_DTRACE_PROBE2_TICKS(nvmf_poll_group_drain_qpair, qpair, spdk_thread_get_id(group->thread)); 1304 qpair->state_cb = _nvmf_qpair_destroy; 1305 qpair->state_cb_arg = qpair_ctx; 1306 nvmf_qpair_abort_pending_zcopy_reqs(qpair); 1307 nvmf_qpair_free_aer(qpair); 1308 return 0; 1309 } 1310 1311 _nvmf_qpair_destroy(qpair_ctx, 0); 1312 1313 return 0; 1314 } 1315 1316 int 1317 spdk_nvmf_qpair_get_peer_trid(struct spdk_nvmf_qpair *qpair, 1318 struct spdk_nvme_transport_id *trid) 1319 { 1320 memset(trid, 0, sizeof(*trid)); 1321 return nvmf_transport_qpair_get_peer_trid(qpair, trid); 1322 } 1323 1324 int 1325 spdk_nvmf_qpair_get_local_trid(struct spdk_nvmf_qpair *qpair, 1326 struct spdk_nvme_transport_id *trid) 1327 { 1328 memset(trid, 0, sizeof(*trid)); 1329 return nvmf_transport_qpair_get_local_trid(qpair, trid); 1330 } 1331 1332 int 1333 spdk_nvmf_qpair_get_listen_trid(struct spdk_nvmf_qpair *qpair, 1334 struct spdk_nvme_transport_id *trid) 1335 { 1336 memset(trid, 0, sizeof(*trid)); 1337 return nvmf_transport_qpair_get_listen_trid(qpair, trid); 1338 } 1339 1340 static int 1341 poll_group_update_subsystem(struct spdk_nvmf_poll_group *group, 1342 struct spdk_nvmf_subsystem *subsystem) 1343 { 1344 struct spdk_nvmf_subsystem_poll_group *sgroup; 1345 uint32_t new_num_ns, old_num_ns; 1346 uint32_t i, j; 1347 struct spdk_nvmf_ns *ns; 1348 struct spdk_nvmf_registrant *reg, *tmp; 1349 struct spdk_io_channel *ch; 1350 struct spdk_nvmf_subsystem_pg_ns_info *ns_info; 1351 struct spdk_nvmf_ctrlr *ctrlr; 1352 bool ns_changed; 1353 1354 /* Make sure our poll group has memory for this subsystem allocated */ 1355 if (subsystem->id >= group->num_sgroups) { 1356 return -ENOMEM; 1357 } 1358 1359 sgroup = &group->sgroups[subsystem->id]; 1360 1361 /* Make sure the array of namespace information is the correct size */ 1362 new_num_ns = subsystem->max_nsid; 1363 old_num_ns = sgroup->num_ns; 1364 1365 ns_changed = false; 1366 1367 if (old_num_ns == 0) { 1368 if (new_num_ns > 0) { 1369 /* First allocation */ 1370 sgroup->ns_info = calloc(new_num_ns, sizeof(struct spdk_nvmf_subsystem_pg_ns_info)); 1371 if (!sgroup->ns_info) { 1372 return -ENOMEM; 1373 } 1374 } 1375 } else if (new_num_ns > old_num_ns) { 1376 void *buf; 1377 1378 /* Make the array larger */ 1379 buf = realloc(sgroup->ns_info, new_num_ns * sizeof(struct spdk_nvmf_subsystem_pg_ns_info)); 1380 if (!buf) { 1381 return -ENOMEM; 1382 } 1383 1384 sgroup->ns_info = buf; 1385 1386 /* Null out the new namespace information slots */ 1387 for (i = old_num_ns; i < new_num_ns; i++) { 1388 memset(&sgroup->ns_info[i], 0, sizeof(struct spdk_nvmf_subsystem_pg_ns_info)); 1389 } 1390 } else if (new_num_ns < old_num_ns) { 1391 void *buf; 1392 1393 /* Free the extra I/O channels */ 1394 for (i = new_num_ns; i < old_num_ns; i++) { 1395 ns_info = &sgroup->ns_info[i]; 1396 1397 if (ns_info->channel) { 1398 spdk_put_io_channel(ns_info->channel); 1399 ns_info->channel = NULL; 1400 } 1401 } 1402 1403 /* Make the array smaller */ 1404 if (new_num_ns > 0) { 1405 buf = realloc(sgroup->ns_info, new_num_ns * sizeof(struct spdk_nvmf_subsystem_pg_ns_info)); 1406 if (!buf) { 1407 return -ENOMEM; 1408 } 1409 sgroup->ns_info = buf; 1410 } else { 1411 free(sgroup->ns_info); 1412 sgroup->ns_info = NULL; 1413 } 1414 } 1415 1416 sgroup->num_ns = new_num_ns; 1417 1418 /* Detect bdevs that were added or removed */ 1419 for (i = 0; i < sgroup->num_ns; i++) { 1420 ns = subsystem->ns[i]; 1421 ns_info = &sgroup->ns_info[i]; 1422 ch = ns_info->channel; 1423 1424 if (ns == NULL && ch == NULL) { 1425 /* Both NULL. Leave empty */ 1426 } else if (ns == NULL && ch != NULL) { 1427 /* There was a channel here, but the namespace is gone. */ 1428 ns_changed = true; 1429 spdk_put_io_channel(ch); 1430 ns_info->channel = NULL; 1431 } else if (ns != NULL && ch == NULL) { 1432 /* A namespace appeared but there is no channel yet */ 1433 ns_changed = true; 1434 ch = spdk_bdev_get_io_channel(ns->desc); 1435 if (ch == NULL) { 1436 SPDK_ERRLOG("Could not allocate I/O channel.\n"); 1437 return -ENOMEM; 1438 } 1439 ns_info->channel = ch; 1440 } else if (spdk_uuid_compare(&ns_info->uuid, spdk_bdev_get_uuid(ns->bdev)) != 0) { 1441 /* A namespace was here before, but was replaced by a new one. */ 1442 ns_changed = true; 1443 spdk_put_io_channel(ns_info->channel); 1444 memset(ns_info, 0, sizeof(*ns_info)); 1445 1446 ch = spdk_bdev_get_io_channel(ns->desc); 1447 if (ch == NULL) { 1448 SPDK_ERRLOG("Could not allocate I/O channel.\n"); 1449 return -ENOMEM; 1450 } 1451 ns_info->channel = ch; 1452 } else if (ns_info->num_blocks != spdk_bdev_get_num_blocks(ns->bdev)) { 1453 /* Namespace is still there but size has changed */ 1454 SPDK_DEBUGLOG(nvmf, "Namespace resized: subsystem_id %u," 1455 " nsid %u, pg %p, old %" PRIu64 ", new %" PRIu64 "\n", 1456 subsystem->id, 1457 ns->nsid, 1458 group, 1459 ns_info->num_blocks, 1460 spdk_bdev_get_num_blocks(ns->bdev)); 1461 ns_changed = true; 1462 } 1463 1464 if (ns == NULL) { 1465 memset(ns_info, 0, sizeof(*ns_info)); 1466 } else { 1467 ns_info->uuid = *spdk_bdev_get_uuid(ns->bdev); 1468 ns_info->num_blocks = spdk_bdev_get_num_blocks(ns->bdev); 1469 ns_info->crkey = ns->crkey; 1470 ns_info->rtype = ns->rtype; 1471 if (ns->holder) { 1472 ns_info->holder_id = ns->holder->hostid; 1473 } 1474 1475 memset(&ns_info->reg_hostid, 0, SPDK_NVMF_MAX_NUM_REGISTRANTS * sizeof(struct spdk_uuid)); 1476 j = 0; 1477 TAILQ_FOREACH_SAFE(reg, &ns->registrants, link, tmp) { 1478 if (j >= SPDK_NVMF_MAX_NUM_REGISTRANTS) { 1479 SPDK_ERRLOG("Maximum %u registrants can support.\n", SPDK_NVMF_MAX_NUM_REGISTRANTS); 1480 return -EINVAL; 1481 } 1482 ns_info->reg_hostid[j++] = reg->hostid; 1483 } 1484 } 1485 } 1486 1487 if (ns_changed) { 1488 TAILQ_FOREACH(ctrlr, &subsystem->ctrlrs, link) { 1489 if (ctrlr->thread != spdk_get_thread()) { 1490 continue; 1491 } 1492 /* It is possible that a ctrlr was added but the admin_qpair hasn't been 1493 * assigned yet. 1494 */ 1495 if (!ctrlr->admin_qpair) { 1496 continue; 1497 } 1498 if (ctrlr->admin_qpair->group == group) { 1499 nvmf_ctrlr_async_event_ns_notice(ctrlr); 1500 nvmf_ctrlr_async_event_ana_change_notice(ctrlr); 1501 } 1502 } 1503 } 1504 1505 return 0; 1506 } 1507 1508 int 1509 nvmf_poll_group_update_subsystem(struct spdk_nvmf_poll_group *group, 1510 struct spdk_nvmf_subsystem *subsystem) 1511 { 1512 return poll_group_update_subsystem(group, subsystem); 1513 } 1514 1515 int 1516 nvmf_poll_group_add_subsystem(struct spdk_nvmf_poll_group *group, 1517 struct spdk_nvmf_subsystem *subsystem, 1518 spdk_nvmf_poll_group_mod_done cb_fn, void *cb_arg) 1519 { 1520 int rc = 0; 1521 struct spdk_nvmf_subsystem_poll_group *sgroup = &group->sgroups[subsystem->id]; 1522 uint32_t i; 1523 1524 TAILQ_INIT(&sgroup->queued); 1525 1526 rc = poll_group_update_subsystem(group, subsystem); 1527 if (rc) { 1528 nvmf_poll_group_remove_subsystem(group, subsystem, NULL, NULL); 1529 goto fini; 1530 } 1531 1532 sgroup->state = SPDK_NVMF_SUBSYSTEM_ACTIVE; 1533 1534 for (i = 0; i < sgroup->num_ns; i++) { 1535 sgroup->ns_info[i].state = SPDK_NVMF_SUBSYSTEM_ACTIVE; 1536 } 1537 1538 fini: 1539 if (cb_fn) { 1540 cb_fn(cb_arg, rc); 1541 } 1542 1543 SPDK_DTRACE_PROBE2_TICKS(nvmf_poll_group_add_subsystem, spdk_thread_get_id(group->thread), 1544 subsystem->subnqn); 1545 1546 return rc; 1547 } 1548 1549 static void 1550 _nvmf_poll_group_remove_subsystem_cb(void *ctx, int status) 1551 { 1552 struct nvmf_qpair_disconnect_many_ctx *qpair_ctx = ctx; 1553 struct spdk_nvmf_subsystem *subsystem; 1554 struct spdk_nvmf_poll_group *group; 1555 struct spdk_nvmf_subsystem_poll_group *sgroup; 1556 spdk_nvmf_poll_group_mod_done cpl_fn = NULL; 1557 void *cpl_ctx = NULL; 1558 uint32_t nsid; 1559 1560 group = qpair_ctx->group; 1561 subsystem = qpair_ctx->subsystem; 1562 cpl_fn = qpair_ctx->cpl_fn; 1563 cpl_ctx = qpair_ctx->cpl_ctx; 1564 sgroup = &group->sgroups[subsystem->id]; 1565 1566 if (status) { 1567 goto fini; 1568 } 1569 1570 for (nsid = 0; nsid < sgroup->num_ns; nsid++) { 1571 if (sgroup->ns_info[nsid].channel) { 1572 spdk_put_io_channel(sgroup->ns_info[nsid].channel); 1573 sgroup->ns_info[nsid].channel = NULL; 1574 } 1575 } 1576 1577 sgroup->num_ns = 0; 1578 free(sgroup->ns_info); 1579 sgroup->ns_info = NULL; 1580 fini: 1581 free(qpair_ctx); 1582 if (cpl_fn) { 1583 cpl_fn(cpl_ctx, status); 1584 } 1585 } 1586 1587 static void nvmf_poll_group_remove_subsystem_msg(void *ctx); 1588 1589 static void 1590 nvmf_poll_group_remove_subsystem_msg(void *ctx) 1591 { 1592 struct spdk_nvmf_qpair *qpair, *qpair_tmp; 1593 struct spdk_nvmf_subsystem *subsystem; 1594 struct spdk_nvmf_poll_group *group; 1595 struct nvmf_qpair_disconnect_many_ctx *qpair_ctx = ctx; 1596 bool qpairs_found = false; 1597 int rc = 0; 1598 1599 group = qpair_ctx->group; 1600 subsystem = qpair_ctx->subsystem; 1601 1602 TAILQ_FOREACH_SAFE(qpair, &group->qpairs, link, qpair_tmp) { 1603 if ((qpair->ctrlr != NULL) && (qpair->ctrlr->subsys == subsystem)) { 1604 qpairs_found = true; 1605 rc = spdk_nvmf_qpair_disconnect(qpair, NULL, NULL); 1606 if (rc && rc != -EINPROGRESS) { 1607 break; 1608 } 1609 } 1610 } 1611 1612 if (!qpairs_found) { 1613 _nvmf_poll_group_remove_subsystem_cb(ctx, 0); 1614 return; 1615 } 1616 1617 /* Some qpairs are in process of being disconnected. Send a message and try to remove them again */ 1618 spdk_thread_send_msg(spdk_get_thread(), nvmf_poll_group_remove_subsystem_msg, ctx); 1619 } 1620 1621 void 1622 nvmf_poll_group_remove_subsystem(struct spdk_nvmf_poll_group *group, 1623 struct spdk_nvmf_subsystem *subsystem, 1624 spdk_nvmf_poll_group_mod_done cb_fn, void *cb_arg) 1625 { 1626 struct spdk_nvmf_subsystem_poll_group *sgroup; 1627 struct nvmf_qpair_disconnect_many_ctx *ctx; 1628 uint32_t i; 1629 1630 SPDK_DTRACE_PROBE3_TICKS(nvmf_poll_group_remove_subsystem, group, spdk_thread_get_id(group->thread), 1631 subsystem->subnqn); 1632 1633 ctx = calloc(1, sizeof(struct nvmf_qpair_disconnect_many_ctx)); 1634 if (!ctx) { 1635 SPDK_ERRLOG("Unable to allocate memory for context to remove poll subsystem\n"); 1636 if (cb_fn) { 1637 cb_fn(cb_arg, -1); 1638 } 1639 return; 1640 } 1641 1642 ctx->group = group; 1643 ctx->subsystem = subsystem; 1644 ctx->cpl_fn = cb_fn; 1645 ctx->cpl_ctx = cb_arg; 1646 1647 sgroup = &group->sgroups[subsystem->id]; 1648 sgroup->state = SPDK_NVMF_SUBSYSTEM_INACTIVE; 1649 1650 for (i = 0; i < sgroup->num_ns; i++) { 1651 sgroup->ns_info[i].state = SPDK_NVMF_SUBSYSTEM_INACTIVE; 1652 } 1653 1654 nvmf_poll_group_remove_subsystem_msg(ctx); 1655 } 1656 1657 void 1658 nvmf_poll_group_pause_subsystem(struct spdk_nvmf_poll_group *group, 1659 struct spdk_nvmf_subsystem *subsystem, 1660 uint32_t nsid, 1661 spdk_nvmf_poll_group_mod_done cb_fn, void *cb_arg) 1662 { 1663 struct spdk_nvmf_subsystem_poll_group *sgroup; 1664 struct spdk_nvmf_subsystem_pg_ns_info *ns_info = NULL; 1665 int rc = 0; 1666 uint32_t i; 1667 1668 if (subsystem->id >= group->num_sgroups) { 1669 rc = -1; 1670 goto fini; 1671 } 1672 1673 sgroup = &group->sgroups[subsystem->id]; 1674 if (sgroup->state == SPDK_NVMF_SUBSYSTEM_PAUSED) { 1675 goto fini; 1676 } 1677 sgroup->state = SPDK_NVMF_SUBSYSTEM_PAUSING; 1678 1679 if (nsid == SPDK_NVME_GLOBAL_NS_TAG) { 1680 for (i = 0; i < sgroup->num_ns; i++) { 1681 ns_info = &sgroup->ns_info[i]; 1682 ns_info->state = SPDK_NVMF_SUBSYSTEM_PAUSING; 1683 } 1684 } else { 1685 /* NOTE: This implicitly also checks for 0, since 0 - 1 wraps around to UINT32_MAX. */ 1686 if (nsid - 1 < sgroup->num_ns) { 1687 ns_info = &sgroup->ns_info[nsid - 1]; 1688 ns_info->state = SPDK_NVMF_SUBSYSTEM_PAUSING; 1689 } 1690 } 1691 1692 if (sgroup->mgmt_io_outstanding > 0) { 1693 assert(sgroup->cb_fn == NULL); 1694 sgroup->cb_fn = cb_fn; 1695 assert(sgroup->cb_arg == NULL); 1696 sgroup->cb_arg = cb_arg; 1697 return; 1698 } 1699 1700 if (nsid == SPDK_NVME_GLOBAL_NS_TAG) { 1701 for (i = 0; i < sgroup->num_ns; i++) { 1702 ns_info = &sgroup->ns_info[i]; 1703 1704 if (ns_info->io_outstanding > 0) { 1705 assert(sgroup->cb_fn == NULL); 1706 sgroup->cb_fn = cb_fn; 1707 assert(sgroup->cb_arg == NULL); 1708 sgroup->cb_arg = cb_arg; 1709 return; 1710 } 1711 } 1712 } else { 1713 if (ns_info != NULL && ns_info->io_outstanding > 0) { 1714 assert(sgroup->cb_fn == NULL); 1715 sgroup->cb_fn = cb_fn; 1716 assert(sgroup->cb_arg == NULL); 1717 sgroup->cb_arg = cb_arg; 1718 return; 1719 } 1720 } 1721 1722 assert(sgroup->mgmt_io_outstanding == 0); 1723 sgroup->state = SPDK_NVMF_SUBSYSTEM_PAUSED; 1724 fini: 1725 if (cb_fn) { 1726 cb_fn(cb_arg, rc); 1727 } 1728 } 1729 1730 void 1731 nvmf_poll_group_resume_subsystem(struct spdk_nvmf_poll_group *group, 1732 struct spdk_nvmf_subsystem *subsystem, 1733 spdk_nvmf_poll_group_mod_done cb_fn, void *cb_arg) 1734 { 1735 struct spdk_nvmf_request *req, *tmp; 1736 struct spdk_nvmf_subsystem_poll_group *sgroup; 1737 int rc = 0; 1738 uint32_t i; 1739 1740 if (subsystem->id >= group->num_sgroups) { 1741 rc = -1; 1742 goto fini; 1743 } 1744 1745 sgroup = &group->sgroups[subsystem->id]; 1746 1747 if (sgroup->state == SPDK_NVMF_SUBSYSTEM_ACTIVE) { 1748 goto fini; 1749 } 1750 1751 rc = poll_group_update_subsystem(group, subsystem); 1752 if (rc) { 1753 goto fini; 1754 } 1755 1756 for (i = 0; i < sgroup->num_ns; i++) { 1757 sgroup->ns_info[i].state = SPDK_NVMF_SUBSYSTEM_ACTIVE; 1758 } 1759 1760 sgroup->state = SPDK_NVMF_SUBSYSTEM_ACTIVE; 1761 1762 /* Release all queued requests */ 1763 TAILQ_FOREACH_SAFE(req, &sgroup->queued, link, tmp) { 1764 TAILQ_REMOVE(&sgroup->queued, req, link); 1765 if (spdk_nvmf_request_using_zcopy(req)) { 1766 spdk_nvmf_request_zcopy_start(req); 1767 } else { 1768 spdk_nvmf_request_exec(req); 1769 } 1770 1771 } 1772 fini: 1773 if (cb_fn) { 1774 cb_fn(cb_arg, rc); 1775 } 1776 } 1777 1778 1779 struct spdk_nvmf_poll_group * 1780 spdk_nvmf_get_optimal_poll_group(struct spdk_nvmf_qpair *qpair) 1781 { 1782 struct spdk_nvmf_transport_poll_group *tgroup; 1783 1784 tgroup = nvmf_transport_get_optimal_poll_group(qpair->transport, qpair); 1785 1786 if (tgroup == NULL) { 1787 return NULL; 1788 } 1789 1790 return tgroup->group; 1791 } 1792 1793 void 1794 spdk_nvmf_poll_group_dump_stat(struct spdk_nvmf_poll_group *group, struct spdk_json_write_ctx *w) 1795 { 1796 struct spdk_nvmf_transport_poll_group *tgroup; 1797 1798 spdk_json_write_object_begin(w); 1799 1800 spdk_json_write_named_string(w, "name", spdk_thread_get_name(spdk_get_thread())); 1801 spdk_json_write_named_uint32(w, "admin_qpairs", group->stat.admin_qpairs); 1802 spdk_json_write_named_uint32(w, "io_qpairs", group->stat.io_qpairs); 1803 spdk_json_write_named_uint32(w, "current_admin_qpairs", group->stat.current_admin_qpairs); 1804 spdk_json_write_named_uint32(w, "current_io_qpairs", group->stat.current_io_qpairs); 1805 spdk_json_write_named_uint64(w, "pending_bdev_io", group->stat.pending_bdev_io); 1806 spdk_json_write_named_uint64(w, "completed_nvme_io", group->stat.completed_nvme_io); 1807 1808 spdk_json_write_named_array_begin(w, "transports"); 1809 1810 TAILQ_FOREACH(tgroup, &group->tgroups, link) { 1811 spdk_json_write_object_begin(w); 1812 /* 1813 * The trtype field intentionally contains a transport name as this is more informative. 1814 * The field has not been renamed for backward compatibility. 1815 */ 1816 spdk_json_write_named_string(w, "trtype", spdk_nvmf_get_transport_name(tgroup->transport)); 1817 1818 if (tgroup->transport->ops->poll_group_dump_stat) { 1819 tgroup->transport->ops->poll_group_dump_stat(tgroup, w); 1820 } 1821 1822 spdk_json_write_object_end(w); 1823 } 1824 1825 spdk_json_write_array_end(w); 1826 spdk_json_write_object_end(w); 1827 } 1828