1 /*- 2 * BSD LICENSE 3 * 4 * Copyright (c) Intel Corporation. All rights reserved. 5 * Copyright (c) 2019, 2020 Mellanox Technologies LTD. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * * Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * * Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * * Neither the name of Intel Corporation nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #include "spdk/accel_engine.h" 35 #include "spdk/stdinc.h" 36 #include "spdk/crc32.h" 37 #include "spdk/endian.h" 38 #include "spdk/assert.h" 39 #include "spdk/thread.h" 40 #include "spdk/nvmf_transport.h" 41 #include "spdk/string.h" 42 #include "spdk/trace.h" 43 #include "spdk/util.h" 44 #include "spdk/log.h" 45 46 #include "spdk_internal/assert.h" 47 #include "spdk_internal/nvme_tcp.h" 48 #include "spdk_internal/sock.h" 49 50 #include "nvmf_internal.h" 51 52 #define NVMF_TCP_MAX_ACCEPT_SOCK_ONE_TIME 16 53 #define SPDK_NVMF_TCP_DEFAULT_MAX_SOCK_PRIORITY 16 54 #define SPDK_NVMF_TCP_DEFAULT_SOCK_PRIORITY 0 55 #define SPDK_NVMF_TCP_DEFAULT_CONTROL_MSG_NUM 32 56 #define SPDK_NVMF_TCP_DEFAULT_SUCCESS_OPTIMIZATION true 57 58 const struct spdk_nvmf_transport_ops spdk_nvmf_transport_tcp; 59 60 /* spdk nvmf related structure */ 61 enum spdk_nvmf_tcp_req_state { 62 63 /* The request is not currently in use */ 64 TCP_REQUEST_STATE_FREE = 0, 65 66 /* Initial state when request first received */ 67 TCP_REQUEST_STATE_NEW, 68 69 /* The request is queued until a data buffer is available. */ 70 TCP_REQUEST_STATE_NEED_BUFFER, 71 72 /* The request is currently transferring data from the host to the controller. */ 73 TCP_REQUEST_STATE_TRANSFERRING_HOST_TO_CONTROLLER, 74 75 /* The request is waiting for the R2T send acknowledgement. */ 76 TCP_REQUEST_STATE_AWAITING_R2T_ACK, 77 78 /* The request is ready to execute at the block device */ 79 TCP_REQUEST_STATE_READY_TO_EXECUTE, 80 81 /* The request is currently executing at the block device */ 82 TCP_REQUEST_STATE_EXECUTING, 83 84 /* The request finished executing at the block device */ 85 TCP_REQUEST_STATE_EXECUTED, 86 87 /* The request is ready to send a completion */ 88 TCP_REQUEST_STATE_READY_TO_COMPLETE, 89 90 /* The request is currently transferring final pdus from the controller to the host. */ 91 TCP_REQUEST_STATE_TRANSFERRING_CONTROLLER_TO_HOST, 92 93 /* The request completed and can be marked free. */ 94 TCP_REQUEST_STATE_COMPLETED, 95 96 /* Terminator */ 97 TCP_REQUEST_NUM_STATES, 98 }; 99 100 static const char *spdk_nvmf_tcp_term_req_fes_str[] = { 101 "Invalid PDU Header Field", 102 "PDU Sequence Error", 103 "Header Digiest Error", 104 "Data Transfer Out of Range", 105 "R2T Limit Exceeded", 106 "Unsupported parameter", 107 }; 108 109 #define OBJECT_NVMF_TCP_IO 0x80 110 111 #define TRACE_GROUP_NVMF_TCP 0x5 112 #define TRACE_TCP_REQUEST_STATE_NEW SPDK_TPOINT_ID(TRACE_GROUP_NVMF_TCP, 0x0) 113 #define TRACE_TCP_REQUEST_STATE_NEED_BUFFER SPDK_TPOINT_ID(TRACE_GROUP_NVMF_TCP, 0x1) 114 #define TRACE_TCP_REQUEST_STATE_TRANSFERRING_HOST_TO_CONTROLLER SPDK_TPOINT_ID(TRACE_GROUP_NVMF_TCP, 0x2) 115 #define TRACE_TCP_REQUEST_STATE_READY_TO_EXECUTE SPDK_TPOINT_ID(TRACE_GROUP_NVMF_TCP, 0x3) 116 #define TRACE_TCP_REQUEST_STATE_EXECUTING SPDK_TPOINT_ID(TRACE_GROUP_NVMF_TCP, 0x4) 117 #define TRACE_TCP_REQUEST_STATE_EXECUTED SPDK_TPOINT_ID(TRACE_GROUP_NVMF_TCP, 0x5) 118 #define TRACE_TCP_REQUEST_STATE_READY_TO_COMPLETE SPDK_TPOINT_ID(TRACE_GROUP_NVMF_TCP, 0x6) 119 #define TRACE_TCP_REQUEST_STATE_TRANSFERRING_CONTROLLER_TO_HOST SPDK_TPOINT_ID(TRACE_GROUP_NVMF_TCP, 0x7) 120 #define TRACE_TCP_REQUEST_STATE_COMPLETED SPDK_TPOINT_ID(TRACE_GROUP_NVMF_TCP, 0x8) 121 #define TRACE_TCP_FLUSH_WRITEBUF_START SPDK_TPOINT_ID(TRACE_GROUP_NVMF_TCP, 0x9) 122 #define TRACE_TCP_FLUSH_WRITEBUF_DONE SPDK_TPOINT_ID(TRACE_GROUP_NVMF_TCP, 0xA) 123 #define TRACE_TCP_READ_FROM_SOCKET_DONE SPDK_TPOINT_ID(TRACE_GROUP_NVMF_TCP, 0xB) 124 #define TRACE_TCP_REQUEST_STATE_AWAIT_R2T_ACK SPDK_TPOINT_ID(TRACE_GROUP_NVMF_TCP, 0xC) 125 126 SPDK_TRACE_REGISTER_FN(nvmf_tcp_trace, "nvmf_tcp", TRACE_GROUP_NVMF_TCP) 127 { 128 spdk_trace_register_object(OBJECT_NVMF_TCP_IO, 'r'); 129 spdk_trace_register_description("TCP_REQ_NEW", 130 TRACE_TCP_REQUEST_STATE_NEW, 131 OWNER_NONE, OBJECT_NVMF_TCP_IO, 1, 1, ""); 132 spdk_trace_register_description("TCP_REQ_NEED_BUFFER", 133 TRACE_TCP_REQUEST_STATE_NEED_BUFFER, 134 OWNER_NONE, OBJECT_NVMF_TCP_IO, 0, 1, ""); 135 spdk_trace_register_description("TCP_REQ_TX_H_TO_C", 136 TRACE_TCP_REQUEST_STATE_TRANSFERRING_HOST_TO_CONTROLLER, 137 OWNER_NONE, OBJECT_NVMF_TCP_IO, 0, 1, ""); 138 spdk_trace_register_description("TCP_REQ_RDY_TO_EXECUTE", 139 TRACE_TCP_REQUEST_STATE_READY_TO_EXECUTE, 140 OWNER_NONE, OBJECT_NVMF_TCP_IO, 0, 1, ""); 141 spdk_trace_register_description("TCP_REQ_EXECUTING", 142 TRACE_TCP_REQUEST_STATE_EXECUTING, 143 OWNER_NONE, OBJECT_NVMF_TCP_IO, 0, 1, ""); 144 spdk_trace_register_description("TCP_REQ_EXECUTED", 145 TRACE_TCP_REQUEST_STATE_EXECUTED, 146 OWNER_NONE, OBJECT_NVMF_TCP_IO, 0, 1, ""); 147 spdk_trace_register_description("TCP_REQ_RDY_TO_COMPLETE", 148 TRACE_TCP_REQUEST_STATE_READY_TO_COMPLETE, 149 OWNER_NONE, OBJECT_NVMF_TCP_IO, 0, 1, ""); 150 spdk_trace_register_description("TCP_REQ_TRANSFER_C2H", 151 TRACE_TCP_REQUEST_STATE_TRANSFERRING_CONTROLLER_TO_HOST, 152 OWNER_NONE, OBJECT_NVMF_TCP_IO, 0, 1, ""); 153 spdk_trace_register_description("TCP_REQ_COMPLETED", 154 TRACE_TCP_REQUEST_STATE_COMPLETED, 155 OWNER_NONE, OBJECT_NVMF_TCP_IO, 0, 1, ""); 156 spdk_trace_register_description("TCP_WRITE_START", 157 TRACE_TCP_FLUSH_WRITEBUF_START, 158 OWNER_NONE, OBJECT_NONE, 0, 0, ""); 159 spdk_trace_register_description("TCP_WRITE_DONE", 160 TRACE_TCP_FLUSH_WRITEBUF_DONE, 161 OWNER_NONE, OBJECT_NONE, 0, 0, ""); 162 spdk_trace_register_description("TCP_READ_DONE", 163 TRACE_TCP_READ_FROM_SOCKET_DONE, 164 OWNER_NONE, OBJECT_NONE, 0, 0, ""); 165 spdk_trace_register_description("TCP_REQ_AWAIT_R2T_ACK", 166 TRACE_TCP_REQUEST_STATE_AWAIT_R2T_ACK, 167 OWNER_NONE, OBJECT_NVMF_TCP_IO, 0, 1, ""); 168 } 169 170 struct spdk_nvmf_tcp_req { 171 struct spdk_nvmf_request req; 172 struct spdk_nvme_cpl rsp; 173 struct spdk_nvme_cmd cmd; 174 175 /* A PDU that can be used for sending responses. This is 176 * not the incoming PDU! */ 177 struct nvme_tcp_pdu *pdu; 178 179 /* In-capsule data buffer */ 180 uint8_t *buf; 181 /* 182 * The PDU for a request may be used multiple times in serial over 183 * the request's lifetime. For example, first to send an R2T, then 184 * to send a completion. To catch mistakes where the PDU is used 185 * twice at the same time, add a debug flag here for init/fini. 186 */ 187 bool pdu_in_use; 188 bool has_incapsule_data; 189 190 /* transfer_tag */ 191 uint16_t ttag; 192 193 enum spdk_nvmf_tcp_req_state state; 194 195 /* 196 * h2c_offset is used when we receive the h2c_data PDU. 197 */ 198 uint32_t h2c_offset; 199 200 STAILQ_ENTRY(spdk_nvmf_tcp_req) link; 201 TAILQ_ENTRY(spdk_nvmf_tcp_req) state_link; 202 }; 203 204 struct spdk_nvmf_tcp_qpair { 205 struct spdk_nvmf_qpair qpair; 206 struct spdk_nvmf_tcp_poll_group *group; 207 struct spdk_sock *sock; 208 209 enum nvme_tcp_pdu_recv_state recv_state; 210 enum nvme_tcp_qpair_state state; 211 212 /* PDU being actively received */ 213 struct nvme_tcp_pdu pdu_in_progress; 214 215 /* Queues to track the requests in all states */ 216 TAILQ_HEAD(, spdk_nvmf_tcp_req) tcp_req_working_queue; 217 TAILQ_HEAD(, spdk_nvmf_tcp_req) tcp_req_free_queue; 218 219 /* Number of requests in each state */ 220 uint32_t state_cntr[TCP_REQUEST_NUM_STATES]; 221 222 uint8_t cpda; 223 224 bool host_hdgst_enable; 225 bool host_ddgst_enable; 226 227 /* This is a spare PDU used for sending special management 228 * operations. Primarily, this is used for the initial 229 * connection response and c2h termination request. */ 230 struct nvme_tcp_pdu *mgmt_pdu; 231 232 /* Arrays of in-capsule buffers, requests, and pdus. 233 * Each array is 'resource_count' number of elements */ 234 void *bufs; 235 struct spdk_nvmf_tcp_req *reqs; 236 struct nvme_tcp_pdu *pdus; 237 uint32_t resource_count; 238 uint32_t recv_buf_size; 239 240 struct spdk_nvmf_tcp_port *port; 241 242 /* IP address */ 243 char initiator_addr[SPDK_NVMF_TRADDR_MAX_LEN]; 244 char target_addr[SPDK_NVMF_TRADDR_MAX_LEN]; 245 246 /* IP port */ 247 uint16_t initiator_port; 248 uint16_t target_port; 249 250 /* Timer used to destroy qpair after detecting transport error issue if initiator does 251 * not close the connection. 252 */ 253 struct spdk_poller *timeout_poller; 254 255 struct spdk_io_channel *accel_channel; 256 257 TAILQ_ENTRY(spdk_nvmf_tcp_qpair) link; 258 }; 259 260 struct spdk_nvmf_tcp_control_msg { 261 STAILQ_ENTRY(spdk_nvmf_tcp_control_msg) link; 262 }; 263 264 struct spdk_nvmf_tcp_control_msg_list { 265 void *msg_buf; 266 STAILQ_HEAD(, spdk_nvmf_tcp_control_msg) free_msgs; 267 }; 268 269 struct spdk_nvmf_tcp_poll_group { 270 struct spdk_nvmf_transport_poll_group group; 271 struct spdk_sock_group *sock_group; 272 273 TAILQ_HEAD(, spdk_nvmf_tcp_qpair) qpairs; 274 TAILQ_HEAD(, spdk_nvmf_tcp_qpair) await_req; 275 276 struct spdk_nvmf_tcp_control_msg_list *control_msg_list; 277 }; 278 279 struct spdk_nvmf_tcp_port { 280 const struct spdk_nvme_transport_id *trid; 281 struct spdk_sock *listen_sock; 282 TAILQ_ENTRY(spdk_nvmf_tcp_port) link; 283 }; 284 285 struct tcp_transport_opts { 286 bool c2h_success; 287 uint16_t control_msg_num; 288 uint32_t sock_priority; 289 }; 290 291 struct spdk_nvmf_tcp_transport { 292 struct spdk_nvmf_transport transport; 293 struct tcp_transport_opts tcp_opts; 294 295 pthread_mutex_t lock; 296 297 TAILQ_HEAD(, spdk_nvmf_tcp_port) ports; 298 }; 299 300 static const struct spdk_json_object_decoder tcp_transport_opts_decoder[] = { 301 { 302 "c2h_success", offsetof(struct tcp_transport_opts, c2h_success), 303 spdk_json_decode_bool, true 304 }, 305 { 306 "control_msg_num", offsetof(struct tcp_transport_opts, control_msg_num), 307 spdk_json_decode_uint16, true 308 }, 309 { 310 "sock_priority", offsetof(struct tcp_transport_opts, sock_priority), 311 spdk_json_decode_uint32, true 312 }, 313 }; 314 315 static bool nvmf_tcp_req_process(struct spdk_nvmf_tcp_transport *ttransport, 316 struct spdk_nvmf_tcp_req *tcp_req); 317 static void nvmf_tcp_poll_group_destroy(struct spdk_nvmf_transport_poll_group *group); 318 319 static void _nvmf_tcp_send_c2h_data(struct spdk_nvmf_tcp_qpair *tqpair, 320 struct spdk_nvmf_tcp_req *tcp_req); 321 322 static void 323 nvmf_tcp_req_set_state(struct spdk_nvmf_tcp_req *tcp_req, 324 enum spdk_nvmf_tcp_req_state state) 325 { 326 struct spdk_nvmf_qpair *qpair; 327 struct spdk_nvmf_tcp_qpair *tqpair; 328 329 qpair = tcp_req->req.qpair; 330 tqpair = SPDK_CONTAINEROF(qpair, struct spdk_nvmf_tcp_qpair, qpair); 331 332 assert(tqpair->state_cntr[tcp_req->state] > 0); 333 tqpair->state_cntr[tcp_req->state]--; 334 tqpair->state_cntr[state]++; 335 336 tcp_req->state = state; 337 } 338 339 static inline struct nvme_tcp_pdu * 340 nvmf_tcp_req_pdu_init(struct spdk_nvmf_tcp_req *tcp_req) 341 { 342 assert(tcp_req->pdu_in_use == false); 343 tcp_req->pdu_in_use = true; 344 345 memset(tcp_req->pdu, 0, sizeof(*tcp_req->pdu)); 346 tcp_req->pdu->qpair = SPDK_CONTAINEROF(tcp_req->req.qpair, struct spdk_nvmf_tcp_qpair, qpair); 347 348 return tcp_req->pdu; 349 } 350 351 static inline void 352 nvmf_tcp_req_pdu_fini(struct spdk_nvmf_tcp_req *tcp_req) 353 { 354 tcp_req->pdu_in_use = false; 355 } 356 357 static struct spdk_nvmf_tcp_req * 358 nvmf_tcp_req_get(struct spdk_nvmf_tcp_qpair *tqpair) 359 { 360 struct spdk_nvmf_tcp_req *tcp_req; 361 362 tcp_req = TAILQ_FIRST(&tqpair->tcp_req_free_queue); 363 if (!tcp_req) { 364 return NULL; 365 } 366 367 memset(&tcp_req->rsp, 0, sizeof(tcp_req->rsp)); 368 tcp_req->h2c_offset = 0; 369 tcp_req->has_incapsule_data = false; 370 tcp_req->req.dif.dif_insert_or_strip = false; 371 372 TAILQ_REMOVE(&tqpair->tcp_req_free_queue, tcp_req, state_link); 373 TAILQ_INSERT_TAIL(&tqpair->tcp_req_working_queue, tcp_req, state_link); 374 nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_NEW); 375 return tcp_req; 376 } 377 378 static inline void 379 nvmf_tcp_req_put(struct spdk_nvmf_tcp_qpair *tqpair, struct spdk_nvmf_tcp_req *tcp_req) 380 { 381 TAILQ_REMOVE(&tqpair->tcp_req_working_queue, tcp_req, state_link); 382 TAILQ_INSERT_TAIL(&tqpair->tcp_req_free_queue, tcp_req, state_link); 383 nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_FREE); 384 } 385 386 static void 387 nvmf_tcp_request_free(void *cb_arg) 388 { 389 struct spdk_nvmf_tcp_transport *ttransport; 390 struct spdk_nvmf_tcp_req *tcp_req = cb_arg; 391 392 assert(tcp_req != NULL); 393 394 SPDK_DEBUGLOG(nvmf_tcp, "tcp_req=%p will be freed\n", tcp_req); 395 ttransport = SPDK_CONTAINEROF(tcp_req->req.qpair->transport, 396 struct spdk_nvmf_tcp_transport, transport); 397 nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_COMPLETED); 398 nvmf_tcp_req_process(ttransport, tcp_req); 399 } 400 401 static int 402 nvmf_tcp_req_free(struct spdk_nvmf_request *req) 403 { 404 struct spdk_nvmf_tcp_req *tcp_req = SPDK_CONTAINEROF(req, struct spdk_nvmf_tcp_req, req); 405 406 nvmf_tcp_request_free(tcp_req); 407 408 return 0; 409 } 410 411 static void 412 nvmf_tcp_drain_state_queue(struct spdk_nvmf_tcp_qpair *tqpair, 413 enum spdk_nvmf_tcp_req_state state) 414 { 415 struct spdk_nvmf_tcp_req *tcp_req, *req_tmp; 416 417 assert(state != TCP_REQUEST_STATE_FREE); 418 TAILQ_FOREACH_SAFE(tcp_req, &tqpair->tcp_req_working_queue, state_link, req_tmp) { 419 if (state == tcp_req->state) { 420 nvmf_tcp_request_free(tcp_req); 421 } 422 } 423 } 424 425 static void 426 nvmf_tcp_cleanup_all_states(struct spdk_nvmf_tcp_qpair *tqpair) 427 { 428 struct spdk_nvmf_tcp_req *tcp_req, *req_tmp; 429 430 nvmf_tcp_drain_state_queue(tqpair, TCP_REQUEST_STATE_TRANSFERRING_CONTROLLER_TO_HOST); 431 nvmf_tcp_drain_state_queue(tqpair, TCP_REQUEST_STATE_NEW); 432 433 /* Wipe the requests waiting for buffer from the global list */ 434 TAILQ_FOREACH_SAFE(tcp_req, &tqpair->tcp_req_working_queue, state_link, req_tmp) { 435 if (tcp_req->state == TCP_REQUEST_STATE_NEED_BUFFER) { 436 STAILQ_REMOVE(&tqpair->group->group.pending_buf_queue, &tcp_req->req, 437 spdk_nvmf_request, buf_link); 438 } 439 } 440 441 nvmf_tcp_drain_state_queue(tqpair, TCP_REQUEST_STATE_NEED_BUFFER); 442 nvmf_tcp_drain_state_queue(tqpair, TCP_REQUEST_STATE_EXECUTING); 443 nvmf_tcp_drain_state_queue(tqpair, TCP_REQUEST_STATE_TRANSFERRING_HOST_TO_CONTROLLER); 444 nvmf_tcp_drain_state_queue(tqpair, TCP_REQUEST_STATE_AWAITING_R2T_ACK); 445 } 446 447 static void 448 nvmf_tcp_dump_qpair_req_contents(struct spdk_nvmf_tcp_qpair *tqpair) 449 { 450 int i; 451 struct spdk_nvmf_tcp_req *tcp_req; 452 453 SPDK_ERRLOG("Dumping contents of queue pair (QID %d)\n", tqpair->qpair.qid); 454 for (i = 1; i < TCP_REQUEST_NUM_STATES; i++) { 455 SPDK_ERRLOG("\tNum of requests in state[%d] = %u\n", i, tqpair->state_cntr[i]); 456 TAILQ_FOREACH(tcp_req, &tqpair->tcp_req_working_queue, state_link) { 457 if ((int)tcp_req->state == i) { 458 SPDK_ERRLOG("\t\tRequest Data From Pool: %d\n", tcp_req->req.data_from_pool); 459 SPDK_ERRLOG("\t\tRequest opcode: %d\n", tcp_req->req.cmd->nvmf_cmd.opcode); 460 } 461 } 462 } 463 } 464 465 static void 466 nvmf_tcp_qpair_destroy(struct spdk_nvmf_tcp_qpair *tqpair) 467 { 468 int err = 0; 469 470 SPDK_DEBUGLOG(nvmf_tcp, "enter\n"); 471 472 err = spdk_sock_close(&tqpair->sock); 473 assert(err == 0); 474 nvmf_tcp_cleanup_all_states(tqpair); 475 476 if (tqpair->state_cntr[TCP_REQUEST_STATE_FREE] != tqpair->resource_count) { 477 SPDK_ERRLOG("tqpair(%p) free tcp request num is %u but should be %u\n", tqpair, 478 tqpair->state_cntr[TCP_REQUEST_STATE_FREE], 479 tqpair->resource_count); 480 err++; 481 } 482 483 if (err > 0) { 484 nvmf_tcp_dump_qpair_req_contents(tqpair); 485 } 486 487 if (tqpair->accel_channel) { 488 spdk_put_io_channel(tqpair->accel_channel); 489 } 490 spdk_dma_free(tqpair->pdus); 491 free(tqpair->reqs); 492 spdk_free(tqpair->bufs); 493 free(tqpair); 494 SPDK_DEBUGLOG(nvmf_tcp, "Leave\n"); 495 } 496 497 static void 498 nvmf_tcp_dump_opts(struct spdk_nvmf_transport *transport, struct spdk_json_write_ctx *w) 499 { 500 struct spdk_nvmf_tcp_transport *ttransport; 501 assert(w != NULL); 502 503 ttransport = SPDK_CONTAINEROF(transport, struct spdk_nvmf_tcp_transport, transport); 504 spdk_json_write_named_bool(w, "c2h_success", ttransport->tcp_opts.c2h_success); 505 spdk_json_write_named_uint32(w, "sock_priority", ttransport->tcp_opts.sock_priority); 506 } 507 508 static int 509 nvmf_tcp_destroy(struct spdk_nvmf_transport *transport, 510 spdk_nvmf_transport_destroy_done_cb cb_fn, void *cb_arg) 511 { 512 struct spdk_nvmf_tcp_transport *ttransport; 513 514 assert(transport != NULL); 515 ttransport = SPDK_CONTAINEROF(transport, struct spdk_nvmf_tcp_transport, transport); 516 517 pthread_mutex_destroy(&ttransport->lock); 518 free(ttransport); 519 520 if (cb_fn) { 521 cb_fn(cb_arg); 522 } 523 return 0; 524 } 525 526 static struct spdk_nvmf_transport * 527 nvmf_tcp_create(struct spdk_nvmf_transport_opts *opts) 528 { 529 struct spdk_nvmf_tcp_transport *ttransport; 530 uint32_t sge_count; 531 uint32_t min_shared_buffers; 532 533 ttransport = calloc(1, sizeof(*ttransport)); 534 if (!ttransport) { 535 return NULL; 536 } 537 538 TAILQ_INIT(&ttransport->ports); 539 540 ttransport->transport.ops = &spdk_nvmf_transport_tcp; 541 542 ttransport->tcp_opts.c2h_success = SPDK_NVMF_TCP_DEFAULT_SUCCESS_OPTIMIZATION; 543 ttransport->tcp_opts.sock_priority = SPDK_NVMF_TCP_DEFAULT_SOCK_PRIORITY; 544 ttransport->tcp_opts.control_msg_num = SPDK_NVMF_TCP_DEFAULT_CONTROL_MSG_NUM; 545 if (opts->transport_specific != NULL && 546 spdk_json_decode_object_relaxed(opts->transport_specific, tcp_transport_opts_decoder, 547 SPDK_COUNTOF(tcp_transport_opts_decoder), 548 &ttransport->tcp_opts)) { 549 SPDK_ERRLOG("spdk_json_decode_object_relaxed failed\n"); 550 free(ttransport); 551 return NULL; 552 } 553 554 SPDK_NOTICELOG("*** TCP Transport Init ***\n"); 555 556 SPDK_INFOLOG(nvmf_tcp, "*** TCP Transport Init ***\n" 557 " Transport opts: max_ioq_depth=%d, max_io_size=%d,\n" 558 " max_io_qpairs_per_ctrlr=%d, io_unit_size=%d,\n" 559 " in_capsule_data_size=%d, max_aq_depth=%d\n" 560 " num_shared_buffers=%d, c2h_success=%d,\n" 561 " dif_insert_or_strip=%d, sock_priority=%d\n" 562 " abort_timeout_sec=%d, control_msg_num=%hu\n", 563 opts->max_queue_depth, 564 opts->max_io_size, 565 opts->max_qpairs_per_ctrlr - 1, 566 opts->io_unit_size, 567 opts->in_capsule_data_size, 568 opts->max_aq_depth, 569 opts->num_shared_buffers, 570 ttransport->tcp_opts.c2h_success, 571 opts->dif_insert_or_strip, 572 ttransport->tcp_opts.sock_priority, 573 opts->abort_timeout_sec, 574 ttransport->tcp_opts.control_msg_num); 575 576 if (ttransport->tcp_opts.sock_priority > SPDK_NVMF_TCP_DEFAULT_MAX_SOCK_PRIORITY) { 577 SPDK_ERRLOG("Unsupported socket_priority=%d, the current range is: 0 to %d\n" 578 "you can use man 7 socket to view the range of priority under SO_PRIORITY item\n", 579 ttransport->tcp_opts.sock_priority, SPDK_NVMF_TCP_DEFAULT_MAX_SOCK_PRIORITY); 580 free(ttransport); 581 return NULL; 582 } 583 584 if (ttransport->tcp_opts.control_msg_num == 0 && 585 opts->in_capsule_data_size < SPDK_NVME_TCP_IN_CAPSULE_DATA_MAX_SIZE) { 586 SPDK_WARNLOG("TCP param control_msg_num can't be 0 if ICD is less than %u bytes. Using default value %u\n", 587 SPDK_NVME_TCP_IN_CAPSULE_DATA_MAX_SIZE, SPDK_NVMF_TCP_DEFAULT_CONTROL_MSG_NUM); 588 ttransport->tcp_opts.control_msg_num = SPDK_NVMF_TCP_DEFAULT_CONTROL_MSG_NUM; 589 } 590 591 /* I/O unit size cannot be larger than max I/O size */ 592 if (opts->io_unit_size > opts->max_io_size) { 593 opts->io_unit_size = opts->max_io_size; 594 } 595 596 sge_count = opts->max_io_size / opts->io_unit_size; 597 if (sge_count > SPDK_NVMF_MAX_SGL_ENTRIES) { 598 SPDK_ERRLOG("Unsupported IO Unit size specified, %d bytes\n", opts->io_unit_size); 599 free(ttransport); 600 return NULL; 601 } 602 603 min_shared_buffers = spdk_env_get_core_count() * opts->buf_cache_size; 604 if (min_shared_buffers > opts->num_shared_buffers) { 605 SPDK_ERRLOG("There are not enough buffers to satisfy" 606 "per-poll group caches for each thread. (%" PRIu32 ")" 607 "supplied. (%" PRIu32 ") required\n", opts->num_shared_buffers, min_shared_buffers); 608 SPDK_ERRLOG("Please specify a larger number of shared buffers\n"); 609 nvmf_tcp_destroy(&ttransport->transport, NULL, NULL); 610 return NULL; 611 } 612 613 pthread_mutex_init(&ttransport->lock, NULL); 614 615 return &ttransport->transport; 616 } 617 618 static int 619 nvmf_tcp_trsvcid_to_int(const char *trsvcid) 620 { 621 unsigned long long ull; 622 char *end = NULL; 623 624 ull = strtoull(trsvcid, &end, 10); 625 if (end == NULL || end == trsvcid || *end != '\0') { 626 return -1; 627 } 628 629 /* Valid TCP/IP port numbers are in [0, 65535] */ 630 if (ull > 65535) { 631 return -1; 632 } 633 634 return (int)ull; 635 } 636 637 /** 638 * Canonicalize a listen address trid. 639 */ 640 static int 641 nvmf_tcp_canon_listen_trid(struct spdk_nvme_transport_id *canon_trid, 642 const struct spdk_nvme_transport_id *trid) 643 { 644 int trsvcid_int; 645 646 trsvcid_int = nvmf_tcp_trsvcid_to_int(trid->trsvcid); 647 if (trsvcid_int < 0) { 648 return -EINVAL; 649 } 650 651 memset(canon_trid, 0, sizeof(*canon_trid)); 652 spdk_nvme_trid_populate_transport(canon_trid, SPDK_NVME_TRANSPORT_TCP); 653 canon_trid->adrfam = trid->adrfam; 654 snprintf(canon_trid->traddr, sizeof(canon_trid->traddr), "%s", trid->traddr); 655 snprintf(canon_trid->trsvcid, sizeof(canon_trid->trsvcid), "%d", trsvcid_int); 656 657 return 0; 658 } 659 660 /** 661 * Find an existing listening port. 662 * 663 * Caller must hold ttransport->lock. 664 */ 665 static struct spdk_nvmf_tcp_port * 666 nvmf_tcp_find_port(struct spdk_nvmf_tcp_transport *ttransport, 667 const struct spdk_nvme_transport_id *trid) 668 { 669 struct spdk_nvme_transport_id canon_trid; 670 struct spdk_nvmf_tcp_port *port; 671 672 if (nvmf_tcp_canon_listen_trid(&canon_trid, trid) != 0) { 673 return NULL; 674 } 675 676 TAILQ_FOREACH(port, &ttransport->ports, link) { 677 if (spdk_nvme_transport_id_compare(&canon_trid, port->trid) == 0) { 678 return port; 679 } 680 } 681 682 return NULL; 683 } 684 685 static int 686 nvmf_tcp_listen(struct spdk_nvmf_transport *transport, const struct spdk_nvme_transport_id *trid, 687 struct spdk_nvmf_listen_opts *listen_opts) 688 { 689 struct spdk_nvmf_tcp_transport *ttransport; 690 struct spdk_nvmf_tcp_port *port; 691 int trsvcid_int; 692 uint8_t adrfam; 693 struct spdk_sock_opts opts; 694 695 if (!strlen(trid->trsvcid)) { 696 SPDK_ERRLOG("Service id is required\n"); 697 return -EINVAL; 698 } 699 700 ttransport = SPDK_CONTAINEROF(transport, struct spdk_nvmf_tcp_transport, transport); 701 702 trsvcid_int = nvmf_tcp_trsvcid_to_int(trid->trsvcid); 703 if (trsvcid_int < 0) { 704 SPDK_ERRLOG("Invalid trsvcid '%s'\n", trid->trsvcid); 705 return -EINVAL; 706 } 707 708 pthread_mutex_lock(&ttransport->lock); 709 port = calloc(1, sizeof(*port)); 710 if (!port) { 711 SPDK_ERRLOG("Port allocation failed\n"); 712 pthread_mutex_unlock(&ttransport->lock); 713 return -ENOMEM; 714 } 715 716 port->trid = trid; 717 opts.opts_size = sizeof(opts); 718 spdk_sock_get_default_opts(&opts); 719 opts.priority = ttransport->tcp_opts.sock_priority; 720 port->listen_sock = spdk_sock_listen_ext(trid->traddr, trsvcid_int, 721 NULL, &opts); 722 if (port->listen_sock == NULL) { 723 SPDK_ERRLOG("spdk_sock_listen(%s, %d) failed: %s (%d)\n", 724 trid->traddr, trsvcid_int, 725 spdk_strerror(errno), errno); 726 free(port); 727 pthread_mutex_unlock(&ttransport->lock); 728 return -errno; 729 } 730 731 if (spdk_sock_is_ipv4(port->listen_sock)) { 732 adrfam = SPDK_NVMF_ADRFAM_IPV4; 733 } else if (spdk_sock_is_ipv6(port->listen_sock)) { 734 adrfam = SPDK_NVMF_ADRFAM_IPV6; 735 } else { 736 SPDK_ERRLOG("Unhandled socket type\n"); 737 adrfam = 0; 738 } 739 740 if (adrfam != trid->adrfam) { 741 SPDK_ERRLOG("Socket address family mismatch\n"); 742 spdk_sock_close(&port->listen_sock); 743 free(port); 744 pthread_mutex_unlock(&ttransport->lock); 745 return -EINVAL; 746 } 747 748 SPDK_NOTICELOG("*** NVMe/TCP Target Listening on %s port %s ***\n", 749 trid->traddr, trid->trsvcid); 750 751 TAILQ_INSERT_TAIL(&ttransport->ports, port, link); 752 pthread_mutex_unlock(&ttransport->lock); 753 return 0; 754 } 755 756 static void 757 nvmf_tcp_stop_listen(struct spdk_nvmf_transport *transport, 758 const struct spdk_nvme_transport_id *trid) 759 { 760 struct spdk_nvmf_tcp_transport *ttransport; 761 struct spdk_nvmf_tcp_port *port; 762 763 ttransport = SPDK_CONTAINEROF(transport, struct spdk_nvmf_tcp_transport, transport); 764 765 SPDK_DEBUGLOG(nvmf_tcp, "Removing listen address %s port %s\n", 766 trid->traddr, trid->trsvcid); 767 768 pthread_mutex_lock(&ttransport->lock); 769 port = nvmf_tcp_find_port(ttransport, trid); 770 if (port) { 771 TAILQ_REMOVE(&ttransport->ports, port, link); 772 spdk_sock_close(&port->listen_sock); 773 free(port); 774 } 775 776 pthread_mutex_unlock(&ttransport->lock); 777 } 778 779 static void nvmf_tcp_qpair_set_recv_state(struct spdk_nvmf_tcp_qpair *tqpair, 780 enum nvme_tcp_pdu_recv_state state); 781 782 static void 783 nvmf_tcp_qpair_disconnect(struct spdk_nvmf_tcp_qpair *tqpair) 784 { 785 SPDK_DEBUGLOG(nvmf_tcp, "Disconnecting qpair %p\n", tqpair); 786 787 if (tqpair->state <= NVME_TCP_QPAIR_STATE_RUNNING) { 788 tqpair->state = NVME_TCP_QPAIR_STATE_EXITING; 789 nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_ERROR); 790 spdk_poller_unregister(&tqpair->timeout_poller); 791 792 /* This will end up calling nvmf_tcp_close_qpair */ 793 spdk_nvmf_qpair_disconnect(&tqpair->qpair, NULL, NULL); 794 } 795 } 796 797 static void 798 _pdu_write_done(void *_pdu, int err) 799 { 800 struct nvme_tcp_pdu *pdu = _pdu; 801 struct spdk_nvmf_tcp_qpair *tqpair = pdu->qpair; 802 803 if (err != 0) { 804 nvmf_tcp_qpair_disconnect(tqpair); 805 return; 806 } 807 808 assert(pdu->cb_fn != NULL); 809 pdu->cb_fn(pdu->cb_arg); 810 } 811 812 static void 813 _tcp_write_pdu(struct nvme_tcp_pdu *pdu) 814 { 815 uint32_t mapped_length = 0; 816 ssize_t rc; 817 struct spdk_nvmf_tcp_qpair *tqpair = pdu->qpair; 818 819 pdu->sock_req.iovcnt = nvme_tcp_build_iovs(pdu->iov, SPDK_COUNTOF(pdu->iov), pdu, 820 tqpair->host_hdgst_enable, tqpair->host_ddgst_enable, 821 &mapped_length); 822 pdu->sock_req.cb_fn = _pdu_write_done; 823 pdu->sock_req.cb_arg = pdu; 824 if (pdu->hdr.common.pdu_type == SPDK_NVME_TCP_PDU_TYPE_IC_RESP || 825 pdu->hdr.common.pdu_type == SPDK_NVME_TCP_PDU_TYPE_C2H_TERM_REQ) { 826 rc = spdk_sock_writev(tqpair->sock, pdu->iov, pdu->sock_req.iovcnt); 827 if (rc == mapped_length) { 828 _pdu_write_done(pdu, 0); 829 } else { 830 SPDK_ERRLOG("IC_RESP or TERM_REQ could not write to socket.\n"); 831 _pdu_write_done(pdu, -1); 832 } 833 } else { 834 spdk_sock_writev_async(tqpair->sock, &pdu->sock_req); 835 } 836 } 837 838 static void 839 data_crc32_accel_done(void *cb_arg, int status) 840 { 841 struct nvme_tcp_pdu *pdu = cb_arg; 842 843 if (spdk_unlikely(status)) { 844 SPDK_ERRLOG("Failed to compute the data digest for pdu =%p\n", pdu); 845 _pdu_write_done(pdu, status); 846 return; 847 } 848 849 pdu->data_digest_crc32 ^= SPDK_CRC32C_XOR; 850 MAKE_DIGEST_WORD(pdu->data_digest, pdu->data_digest_crc32); 851 852 _tcp_write_pdu(pdu); 853 } 854 855 static void 856 pdu_data_crc32_compute(struct nvme_tcp_pdu *pdu) 857 { 858 struct spdk_nvmf_tcp_qpair *tqpair = pdu->qpair; 859 uint32_t crc32c; 860 861 /* Data Digest */ 862 if (pdu->data_len > 0 && g_nvme_tcp_ddgst[pdu->hdr.common.pdu_type] && tqpair->host_ddgst_enable) { 863 /* Only suport this limitated case for the first step */ 864 if (spdk_likely(!pdu->dif_ctx && (pdu->data_len % SPDK_NVME_TCP_DIGEST_ALIGNMENT == 0))) { 865 spdk_accel_submit_crc32cv(tqpair->accel_channel, &pdu->data_digest_crc32, 866 pdu->data_iov, pdu->data_iovcnt, 0, data_crc32_accel_done, pdu); 867 return; 868 } 869 870 crc32c = nvme_tcp_pdu_calc_data_digest(pdu); 871 MAKE_DIGEST_WORD(pdu->data_digest, crc32c); 872 } 873 874 _tcp_write_pdu(pdu); 875 } 876 877 static void 878 header_crc32_accel_done(void *cb_arg, int status) 879 { 880 struct nvme_tcp_pdu *pdu = cb_arg; 881 882 pdu->header_digest_crc32 ^= SPDK_CRC32C_XOR; 883 MAKE_DIGEST_WORD((uint8_t *)pdu->hdr.raw + pdu->hdr.common.hlen, pdu->header_digest_crc32); 884 if (spdk_unlikely(status)) { 885 SPDK_ERRLOG("Failed to compute header digest on pdu=%p\n", pdu); 886 _pdu_write_done(pdu, status); 887 return; 888 } 889 890 pdu_data_crc32_compute(pdu); 891 } 892 893 static void 894 nvmf_tcp_qpair_write_pdu(struct spdk_nvmf_tcp_qpair *tqpair, 895 struct nvme_tcp_pdu *pdu, 896 nvme_tcp_qpair_xfer_complete_cb cb_fn, 897 void *cb_arg) 898 { 899 int hlen; 900 901 assert(&tqpair->pdu_in_progress != pdu); 902 903 hlen = pdu->hdr.common.hlen; 904 pdu->cb_fn = cb_fn; 905 pdu->cb_arg = cb_arg; 906 pdu->qpair = tqpair; 907 908 pdu->iov[0].iov_base = &pdu->hdr.raw; 909 pdu->iov[0].iov_len = hlen; 910 911 /* Header Digest */ 912 if (g_nvme_tcp_hdgst[pdu->hdr.common.pdu_type] && tqpair->host_hdgst_enable) { 913 spdk_accel_submit_crc32cv(tqpair->accel_channel, &pdu->header_digest_crc32, 914 pdu->iov, 1, 0, header_crc32_accel_done, pdu); 915 return; 916 } 917 918 pdu_data_crc32_compute(pdu); 919 } 920 921 static int 922 nvmf_tcp_qpair_init_mem_resource(struct spdk_nvmf_tcp_qpair *tqpair) 923 { 924 uint32_t i; 925 struct spdk_nvmf_transport_opts *opts; 926 uint32_t in_capsule_data_size; 927 928 opts = &tqpair->qpair.transport->opts; 929 930 in_capsule_data_size = opts->in_capsule_data_size; 931 if (opts->dif_insert_or_strip) { 932 in_capsule_data_size = SPDK_BDEV_BUF_SIZE_WITH_MD(in_capsule_data_size); 933 } 934 935 tqpair->resource_count = opts->max_queue_depth; 936 937 tqpair->reqs = calloc(tqpair->resource_count, sizeof(*tqpair->reqs)); 938 if (!tqpair->reqs) { 939 SPDK_ERRLOG("Unable to allocate reqs on tqpair=%p\n", tqpair); 940 return -1; 941 } 942 943 if (in_capsule_data_size) { 944 tqpair->bufs = spdk_zmalloc(tqpair->resource_count * in_capsule_data_size, 0x1000, 945 NULL, SPDK_ENV_LCORE_ID_ANY, 946 SPDK_MALLOC_DMA); 947 if (!tqpair->bufs) { 948 SPDK_ERRLOG("Unable to allocate bufs on tqpair=%p.\n", tqpair); 949 return -1; 950 } 951 } 952 953 /* Add addtional one member, which will be used for mgmt_pdu owned by the tqpair */ 954 tqpair->pdus = spdk_dma_malloc((tqpair->resource_count + 1) * sizeof(*tqpair->pdus), 0x1000, NULL); 955 if (!tqpair->pdus) { 956 SPDK_ERRLOG("Unable to allocate pdu pool on tqpair =%p.\n", tqpair); 957 return -1; 958 } 959 960 for (i = 0; i < tqpair->resource_count; i++) { 961 struct spdk_nvmf_tcp_req *tcp_req = &tqpair->reqs[i]; 962 963 tcp_req->ttag = i + 1; 964 tcp_req->req.qpair = &tqpair->qpair; 965 966 tcp_req->pdu = &tqpair->pdus[i]; 967 tcp_req->pdu->qpair = tqpair; 968 969 /* Set up memory to receive commands */ 970 if (tqpair->bufs) { 971 tcp_req->buf = (void *)((uintptr_t)tqpair->bufs + (i * in_capsule_data_size)); 972 } 973 974 /* Set the cmdn and rsp */ 975 tcp_req->req.rsp = (union nvmf_c2h_msg *)&tcp_req->rsp; 976 tcp_req->req.cmd = (union nvmf_h2c_msg *)&tcp_req->cmd; 977 978 /* Initialize request state to FREE */ 979 tcp_req->state = TCP_REQUEST_STATE_FREE; 980 TAILQ_INSERT_TAIL(&tqpair->tcp_req_free_queue, tcp_req, state_link); 981 tqpair->state_cntr[TCP_REQUEST_STATE_FREE]++; 982 } 983 984 tqpair->mgmt_pdu = &tqpair->pdus[i]; 985 tqpair->mgmt_pdu->qpair = tqpair; 986 987 tqpair->recv_buf_size = (in_capsule_data_size + sizeof(struct spdk_nvme_tcp_cmd) + 2 * 988 SPDK_NVME_TCP_DIGEST_LEN) * SPDK_NVMF_TCP_RECV_BUF_SIZE_FACTOR; 989 990 return 0; 991 } 992 993 static int 994 nvmf_tcp_qpair_init(struct spdk_nvmf_qpair *qpair) 995 { 996 struct spdk_nvmf_tcp_qpair *tqpair; 997 998 tqpair = SPDK_CONTAINEROF(qpair, struct spdk_nvmf_tcp_qpair, qpair); 999 1000 SPDK_DEBUGLOG(nvmf_tcp, "New TCP Connection: %p\n", qpair); 1001 1002 /* Initialise request state queues of the qpair */ 1003 TAILQ_INIT(&tqpair->tcp_req_free_queue); 1004 TAILQ_INIT(&tqpair->tcp_req_working_queue); 1005 1006 tqpair->host_hdgst_enable = true; 1007 tqpair->host_ddgst_enable = true; 1008 1009 return 0; 1010 } 1011 1012 static int 1013 nvmf_tcp_qpair_sock_init(struct spdk_nvmf_tcp_qpair *tqpair) 1014 { 1015 int rc; 1016 1017 /* set low water mark */ 1018 rc = spdk_sock_set_recvlowat(tqpair->sock, sizeof(struct spdk_nvme_tcp_common_pdu_hdr)); 1019 if (rc != 0) { 1020 SPDK_ERRLOG("spdk_sock_set_recvlowat() failed\n"); 1021 return rc; 1022 } 1023 1024 return 0; 1025 } 1026 1027 static void 1028 nvmf_tcp_handle_connect(struct spdk_nvmf_transport *transport, 1029 struct spdk_nvmf_tcp_port *port, 1030 struct spdk_sock *sock) 1031 { 1032 struct spdk_nvmf_tcp_qpair *tqpair; 1033 int rc; 1034 1035 SPDK_DEBUGLOG(nvmf_tcp, "New connection accepted on %s port %s\n", 1036 port->trid->traddr, port->trid->trsvcid); 1037 1038 tqpair = calloc(1, sizeof(struct spdk_nvmf_tcp_qpair)); 1039 if (tqpair == NULL) { 1040 SPDK_ERRLOG("Could not allocate new connection.\n"); 1041 spdk_sock_close(&sock); 1042 return; 1043 } 1044 1045 tqpair->sock = sock; 1046 tqpair->state_cntr[TCP_REQUEST_STATE_FREE] = 0; 1047 tqpair->port = port; 1048 tqpair->qpair.transport = transport; 1049 1050 rc = spdk_sock_getaddr(tqpair->sock, tqpair->target_addr, 1051 sizeof(tqpair->target_addr), &tqpair->target_port, 1052 tqpair->initiator_addr, sizeof(tqpair->initiator_addr), 1053 &tqpair->initiator_port); 1054 if (rc < 0) { 1055 SPDK_ERRLOG("spdk_sock_getaddr() failed of tqpair=%p\n", tqpair); 1056 nvmf_tcp_qpair_destroy(tqpair); 1057 return; 1058 } 1059 1060 spdk_nvmf_tgt_new_qpair(transport->tgt, &tqpair->qpair); 1061 } 1062 1063 static uint32_t 1064 nvmf_tcp_port_accept(struct spdk_nvmf_transport *transport, struct spdk_nvmf_tcp_port *port) 1065 { 1066 struct spdk_sock *sock; 1067 uint32_t count = 0; 1068 int i; 1069 1070 for (i = 0; i < NVMF_TCP_MAX_ACCEPT_SOCK_ONE_TIME; i++) { 1071 sock = spdk_sock_accept(port->listen_sock); 1072 if (sock == NULL) { 1073 break; 1074 } 1075 count++; 1076 nvmf_tcp_handle_connect(transport, port, sock); 1077 } 1078 1079 return count; 1080 } 1081 1082 static uint32_t 1083 nvmf_tcp_accept(struct spdk_nvmf_transport *transport) 1084 { 1085 struct spdk_nvmf_tcp_transport *ttransport; 1086 struct spdk_nvmf_tcp_port *port; 1087 uint32_t count = 0; 1088 1089 ttransport = SPDK_CONTAINEROF(transport, struct spdk_nvmf_tcp_transport, transport); 1090 1091 TAILQ_FOREACH(port, &ttransport->ports, link) { 1092 count += nvmf_tcp_port_accept(transport, port); 1093 } 1094 1095 return count; 1096 } 1097 1098 static void 1099 nvmf_tcp_discover(struct spdk_nvmf_transport *transport, 1100 struct spdk_nvme_transport_id *trid, 1101 struct spdk_nvmf_discovery_log_page_entry *entry) 1102 { 1103 entry->trtype = SPDK_NVMF_TRTYPE_TCP; 1104 entry->adrfam = trid->adrfam; 1105 entry->treq.secure_channel = SPDK_NVMF_TREQ_SECURE_CHANNEL_NOT_REQUIRED; 1106 1107 spdk_strcpy_pad(entry->trsvcid, trid->trsvcid, sizeof(entry->trsvcid), ' '); 1108 spdk_strcpy_pad(entry->traddr, trid->traddr, sizeof(entry->traddr), ' '); 1109 1110 entry->tsas.tcp.sectype = SPDK_NVME_TCP_SECURITY_NONE; 1111 } 1112 1113 static struct spdk_nvmf_tcp_control_msg_list * 1114 nvmf_tcp_control_msg_list_create(uint16_t num_messages) 1115 { 1116 struct spdk_nvmf_tcp_control_msg_list *list; 1117 struct spdk_nvmf_tcp_control_msg *msg; 1118 uint16_t i; 1119 1120 list = calloc(1, sizeof(*list)); 1121 if (!list) { 1122 SPDK_ERRLOG("Failed to allocate memory for list structure\n"); 1123 return NULL; 1124 } 1125 1126 list->msg_buf = spdk_zmalloc(num_messages * SPDK_NVME_TCP_IN_CAPSULE_DATA_MAX_SIZE, 1127 NVMF_DATA_BUFFER_ALIGNMENT, NULL, SPDK_ENV_SOCKET_ID_ANY, SPDK_MALLOC_DMA); 1128 if (!list->msg_buf) { 1129 SPDK_ERRLOG("Failed to allocate memory for control message buffers\n"); 1130 free(list); 1131 return NULL; 1132 } 1133 1134 STAILQ_INIT(&list->free_msgs); 1135 1136 for (i = 0; i < num_messages; i++) { 1137 msg = (struct spdk_nvmf_tcp_control_msg *)((char *)list->msg_buf + i * 1138 SPDK_NVME_TCP_IN_CAPSULE_DATA_MAX_SIZE); 1139 STAILQ_INSERT_TAIL(&list->free_msgs, msg, link); 1140 } 1141 1142 return list; 1143 } 1144 1145 static void 1146 nvmf_tcp_control_msg_list_free(struct spdk_nvmf_tcp_control_msg_list *list) 1147 { 1148 if (!list) { 1149 return; 1150 } 1151 1152 spdk_free(list->msg_buf); 1153 free(list); 1154 } 1155 1156 static struct spdk_nvmf_transport_poll_group * 1157 nvmf_tcp_poll_group_create(struct spdk_nvmf_transport *transport) 1158 { 1159 struct spdk_nvmf_tcp_transport *ttransport; 1160 struct spdk_nvmf_tcp_poll_group *tgroup; 1161 1162 tgroup = calloc(1, sizeof(*tgroup)); 1163 if (!tgroup) { 1164 return NULL; 1165 } 1166 1167 tgroup->sock_group = spdk_sock_group_create(&tgroup->group); 1168 if (!tgroup->sock_group) { 1169 goto cleanup; 1170 } 1171 1172 TAILQ_INIT(&tgroup->qpairs); 1173 TAILQ_INIT(&tgroup->await_req); 1174 1175 ttransport = SPDK_CONTAINEROF(transport, struct spdk_nvmf_tcp_transport, transport); 1176 1177 if (transport->opts.in_capsule_data_size < SPDK_NVME_TCP_IN_CAPSULE_DATA_MAX_SIZE) { 1178 SPDK_DEBUGLOG(nvmf_tcp, "ICD %u is less than min required for admin/fabric commands (%u). " 1179 "Creating control messages list\n", transport->opts.in_capsule_data_size, 1180 SPDK_NVME_TCP_IN_CAPSULE_DATA_MAX_SIZE); 1181 tgroup->control_msg_list = nvmf_tcp_control_msg_list_create(ttransport->tcp_opts.control_msg_num); 1182 if (!tgroup->control_msg_list) { 1183 goto cleanup; 1184 } 1185 } 1186 1187 return &tgroup->group; 1188 1189 cleanup: 1190 nvmf_tcp_poll_group_destroy(&tgroup->group); 1191 return NULL; 1192 } 1193 1194 static struct spdk_nvmf_transport_poll_group * 1195 nvmf_tcp_get_optimal_poll_group(struct spdk_nvmf_qpair *qpair) 1196 { 1197 struct spdk_nvmf_tcp_qpair *tqpair; 1198 struct spdk_sock_group *group = NULL; 1199 int rc; 1200 1201 tqpair = SPDK_CONTAINEROF(qpair, struct spdk_nvmf_tcp_qpair, qpair); 1202 rc = spdk_sock_get_optimal_sock_group(tqpair->sock, &group); 1203 if (!rc && group != NULL) { 1204 return spdk_sock_group_get_ctx(group); 1205 } 1206 1207 return NULL; 1208 } 1209 1210 static void 1211 nvmf_tcp_poll_group_destroy(struct spdk_nvmf_transport_poll_group *group) 1212 { 1213 struct spdk_nvmf_tcp_poll_group *tgroup; 1214 1215 tgroup = SPDK_CONTAINEROF(group, struct spdk_nvmf_tcp_poll_group, group); 1216 spdk_sock_group_close(&tgroup->sock_group); 1217 if (tgroup->control_msg_list) { 1218 nvmf_tcp_control_msg_list_free(tgroup->control_msg_list); 1219 } 1220 1221 free(tgroup); 1222 } 1223 1224 static void 1225 nvmf_tcp_qpair_set_recv_state(struct spdk_nvmf_tcp_qpair *tqpair, 1226 enum nvme_tcp_pdu_recv_state state) 1227 { 1228 if (tqpair->recv_state == state) { 1229 SPDK_ERRLOG("The recv state of tqpair=%p is same with the state(%d) to be set\n", 1230 tqpair, state); 1231 return; 1232 } 1233 1234 if (tqpair->recv_state == NVME_TCP_PDU_RECV_STATE_AWAIT_REQ) { 1235 /* When leaving the await req state, move the qpair to the main list */ 1236 TAILQ_REMOVE(&tqpair->group->await_req, tqpair, link); 1237 TAILQ_INSERT_TAIL(&tqpair->group->qpairs, tqpair, link); 1238 } 1239 1240 SPDK_DEBUGLOG(nvmf_tcp, "tqpair(%p) recv state=%d\n", tqpair, state); 1241 tqpair->recv_state = state; 1242 1243 switch (state) { 1244 case NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_CH: 1245 case NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_PSH: 1246 case NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_PAYLOAD: 1247 break; 1248 case NVME_TCP_PDU_RECV_STATE_AWAIT_REQ: 1249 TAILQ_REMOVE(&tqpair->group->qpairs, tqpair, link); 1250 TAILQ_INSERT_TAIL(&tqpair->group->await_req, tqpair, link); 1251 break; 1252 case NVME_TCP_PDU_RECV_STATE_ERROR: 1253 case NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_READY: 1254 memset(&tqpair->pdu_in_progress, 0, sizeof(tqpair->pdu_in_progress)); 1255 break; 1256 default: 1257 SPDK_ERRLOG("The state(%d) is invalid\n", state); 1258 abort(); 1259 break; 1260 } 1261 } 1262 1263 static int 1264 nvmf_tcp_qpair_handle_timeout(void *ctx) 1265 { 1266 struct spdk_nvmf_tcp_qpair *tqpair = ctx; 1267 1268 assert(tqpair->recv_state == NVME_TCP_PDU_RECV_STATE_ERROR); 1269 1270 SPDK_ERRLOG("No pdu coming for tqpair=%p within %d seconds\n", tqpair, 1271 SPDK_NVME_TCP_QPAIR_EXIT_TIMEOUT); 1272 1273 nvmf_tcp_qpair_disconnect(tqpair); 1274 return SPDK_POLLER_BUSY; 1275 } 1276 1277 static void 1278 nvmf_tcp_send_c2h_term_req_complete(void *cb_arg) 1279 { 1280 struct spdk_nvmf_tcp_qpair *tqpair = (struct spdk_nvmf_tcp_qpair *)cb_arg; 1281 1282 if (!tqpair->timeout_poller) { 1283 tqpair->timeout_poller = SPDK_POLLER_REGISTER(nvmf_tcp_qpair_handle_timeout, tqpair, 1284 SPDK_NVME_TCP_QPAIR_EXIT_TIMEOUT * 1000000); 1285 } 1286 } 1287 1288 static void 1289 nvmf_tcp_send_c2h_term_req(struct spdk_nvmf_tcp_qpair *tqpair, struct nvme_tcp_pdu *pdu, 1290 enum spdk_nvme_tcp_term_req_fes fes, uint32_t error_offset) 1291 { 1292 struct nvme_tcp_pdu *rsp_pdu; 1293 struct spdk_nvme_tcp_term_req_hdr *c2h_term_req; 1294 uint32_t c2h_term_req_hdr_len = sizeof(*c2h_term_req); 1295 uint32_t copy_len; 1296 1297 rsp_pdu = tqpair->mgmt_pdu; 1298 1299 c2h_term_req = &rsp_pdu->hdr.term_req; 1300 c2h_term_req->common.pdu_type = SPDK_NVME_TCP_PDU_TYPE_C2H_TERM_REQ; 1301 c2h_term_req->common.hlen = c2h_term_req_hdr_len; 1302 1303 if ((fes == SPDK_NVME_TCP_TERM_REQ_FES_INVALID_HEADER_FIELD) || 1304 (fes == SPDK_NVME_TCP_TERM_REQ_FES_INVALID_DATA_UNSUPPORTED_PARAMETER)) { 1305 DSET32(&c2h_term_req->fei, error_offset); 1306 } 1307 1308 copy_len = spdk_min(pdu->hdr.common.hlen, SPDK_NVME_TCP_TERM_REQ_ERROR_DATA_MAX_SIZE); 1309 1310 /* Copy the error info into the buffer */ 1311 memcpy((uint8_t *)rsp_pdu->hdr.raw + c2h_term_req_hdr_len, pdu->hdr.raw, copy_len); 1312 nvme_tcp_pdu_set_data(rsp_pdu, (uint8_t *)rsp_pdu->hdr.raw + c2h_term_req_hdr_len, copy_len); 1313 1314 /* Contain the header of the wrong received pdu */ 1315 c2h_term_req->common.plen = c2h_term_req->common.hlen + copy_len; 1316 nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_ERROR); 1317 nvmf_tcp_qpair_write_pdu(tqpair, rsp_pdu, nvmf_tcp_send_c2h_term_req_complete, tqpair); 1318 } 1319 1320 static void 1321 nvmf_tcp_capsule_cmd_hdr_handle(struct spdk_nvmf_tcp_transport *ttransport, 1322 struct spdk_nvmf_tcp_qpair *tqpair, 1323 struct nvme_tcp_pdu *pdu) 1324 { 1325 struct spdk_nvmf_tcp_req *tcp_req; 1326 1327 assert(pdu->psh_valid_bytes == pdu->psh_len); 1328 assert(pdu->hdr.common.pdu_type == SPDK_NVME_TCP_PDU_TYPE_CAPSULE_CMD); 1329 1330 tcp_req = nvmf_tcp_req_get(tqpair); 1331 if (!tcp_req) { 1332 /* Directly return and make the allocation retry again */ 1333 if (tqpair->state_cntr[TCP_REQUEST_STATE_TRANSFERRING_CONTROLLER_TO_HOST] > 0) { 1334 return; 1335 } 1336 1337 /* The host sent more commands than the maximum queue depth. */ 1338 SPDK_ERRLOG("Cannot allocate tcp_req on tqpair=%p\n", tqpair); 1339 nvmf_tcp_qpair_disconnect(tqpair); 1340 return; 1341 } 1342 1343 pdu->req = tcp_req; 1344 assert(tcp_req->state == TCP_REQUEST_STATE_NEW); 1345 nvmf_tcp_req_process(ttransport, tcp_req); 1346 } 1347 1348 static void 1349 nvmf_tcp_capsule_cmd_payload_handle(struct spdk_nvmf_tcp_transport *ttransport, 1350 struct spdk_nvmf_tcp_qpair *tqpair, 1351 struct nvme_tcp_pdu *pdu) 1352 { 1353 struct spdk_nvmf_tcp_req *tcp_req; 1354 struct spdk_nvme_tcp_cmd *capsule_cmd; 1355 uint32_t error_offset = 0; 1356 enum spdk_nvme_tcp_term_req_fes fes; 1357 1358 capsule_cmd = &pdu->hdr.capsule_cmd; 1359 tcp_req = pdu->req; 1360 assert(tcp_req != NULL); 1361 if (capsule_cmd->common.pdo > SPDK_NVME_TCP_PDU_PDO_MAX_OFFSET) { 1362 SPDK_ERRLOG("Expected ICReq capsule_cmd pdu offset <= %d, got %c\n", 1363 SPDK_NVME_TCP_PDU_PDO_MAX_OFFSET, capsule_cmd->common.pdo); 1364 fes = SPDK_NVME_TCP_TERM_REQ_FES_INVALID_HEADER_FIELD; 1365 error_offset = offsetof(struct spdk_nvme_tcp_common_pdu_hdr, pdo); 1366 goto err; 1367 } 1368 1369 nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_READY); 1370 nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_READY_TO_EXECUTE); 1371 nvmf_tcp_req_process(ttransport, tcp_req); 1372 1373 return; 1374 err: 1375 nvmf_tcp_send_c2h_term_req(tqpair, pdu, fes, error_offset); 1376 } 1377 1378 static int 1379 nvmf_tcp_find_req_in_state(struct spdk_nvmf_tcp_qpair *tqpair, 1380 enum spdk_nvmf_tcp_req_state state, 1381 uint16_t cid, uint16_t tag, 1382 struct spdk_nvmf_tcp_req **req) 1383 { 1384 struct spdk_nvmf_tcp_req *tcp_req = NULL; 1385 1386 TAILQ_FOREACH(tcp_req, &tqpair->tcp_req_working_queue, state_link) { 1387 if (tcp_req->state != state) { 1388 continue; 1389 } 1390 1391 if (tcp_req->req.cmd->nvme_cmd.cid != cid) { 1392 continue; 1393 } 1394 1395 if (tcp_req->ttag == tag) { 1396 *req = tcp_req; 1397 return 0; 1398 } 1399 1400 *req = NULL; 1401 return -1; 1402 } 1403 1404 /* Didn't find it, but not an error */ 1405 *req = NULL; 1406 return 0; 1407 } 1408 1409 static void 1410 nvmf_tcp_h2c_data_hdr_handle(struct spdk_nvmf_tcp_transport *ttransport, 1411 struct spdk_nvmf_tcp_qpair *tqpair, 1412 struct nvme_tcp_pdu *pdu) 1413 { 1414 struct spdk_nvmf_tcp_req *tcp_req; 1415 uint32_t error_offset = 0; 1416 enum spdk_nvme_tcp_term_req_fes fes = 0; 1417 struct spdk_nvme_tcp_h2c_data_hdr *h2c_data; 1418 int rc; 1419 1420 h2c_data = &pdu->hdr.h2c_data; 1421 1422 SPDK_DEBUGLOG(nvmf_tcp, "tqpair=%p, r2t_info: datao=%u, datal=%u, cccid=%u, ttag=%u\n", 1423 tqpair, h2c_data->datao, h2c_data->datal, h2c_data->cccid, h2c_data->ttag); 1424 1425 rc = nvmf_tcp_find_req_in_state(tqpair, TCP_REQUEST_STATE_TRANSFERRING_HOST_TO_CONTROLLER, 1426 h2c_data->cccid, h2c_data->ttag, &tcp_req); 1427 if (rc == 0 && tcp_req == NULL) { 1428 rc = nvmf_tcp_find_req_in_state(tqpair, TCP_REQUEST_STATE_AWAITING_R2T_ACK, h2c_data->cccid, 1429 h2c_data->ttag, &tcp_req); 1430 } 1431 1432 if (!tcp_req) { 1433 SPDK_DEBUGLOG(nvmf_tcp, "tcp_req is not found for tqpair=%p\n", tqpair); 1434 fes = SPDK_NVME_TCP_TERM_REQ_FES_INVALID_DATA_UNSUPPORTED_PARAMETER; 1435 if (rc == 0) { 1436 error_offset = offsetof(struct spdk_nvme_tcp_h2c_data_hdr, cccid); 1437 } else { 1438 error_offset = offsetof(struct spdk_nvme_tcp_h2c_data_hdr, ttag); 1439 } 1440 goto err; 1441 } 1442 1443 if (tcp_req->h2c_offset != h2c_data->datao) { 1444 SPDK_DEBUGLOG(nvmf_tcp, 1445 "tcp_req(%p), tqpair=%p, expected data offset %u, but data offset is %u\n", 1446 tcp_req, tqpair, tcp_req->h2c_offset, h2c_data->datao); 1447 fes = SPDK_NVME_TCP_TERM_REQ_FES_DATA_TRANSFER_OUT_OF_RANGE; 1448 goto err; 1449 } 1450 1451 if ((h2c_data->datao + h2c_data->datal) > tcp_req->req.length) { 1452 SPDK_DEBUGLOG(nvmf_tcp, 1453 "tcp_req(%p), tqpair=%p, (datao=%u + datal=%u) execeeds requested length=%u\n", 1454 tcp_req, tqpair, h2c_data->datao, h2c_data->datal, tcp_req->req.length); 1455 fes = SPDK_NVME_TCP_TERM_REQ_FES_DATA_TRANSFER_OUT_OF_RANGE; 1456 goto err; 1457 } 1458 1459 pdu->req = tcp_req; 1460 1461 if (spdk_unlikely(tcp_req->req.dif.dif_insert_or_strip)) { 1462 pdu->dif_ctx = &tcp_req->req.dif.dif_ctx; 1463 } 1464 1465 nvme_tcp_pdu_set_data_buf(pdu, tcp_req->req.iov, tcp_req->req.iovcnt, 1466 h2c_data->datao, h2c_data->datal); 1467 nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_PAYLOAD); 1468 return; 1469 1470 err: 1471 nvmf_tcp_send_c2h_term_req(tqpair, pdu, fes, error_offset); 1472 } 1473 1474 static void 1475 nvmf_tcp_send_capsule_resp_pdu(struct spdk_nvmf_tcp_req *tcp_req, 1476 struct spdk_nvmf_tcp_qpair *tqpair) 1477 { 1478 struct nvme_tcp_pdu *rsp_pdu; 1479 struct spdk_nvme_tcp_rsp *capsule_resp; 1480 1481 SPDK_DEBUGLOG(nvmf_tcp, "enter, tqpair=%p\n", tqpair); 1482 1483 rsp_pdu = nvmf_tcp_req_pdu_init(tcp_req); 1484 assert(rsp_pdu != NULL); 1485 1486 capsule_resp = &rsp_pdu->hdr.capsule_resp; 1487 capsule_resp->common.pdu_type = SPDK_NVME_TCP_PDU_TYPE_CAPSULE_RESP; 1488 capsule_resp->common.plen = capsule_resp->common.hlen = sizeof(*capsule_resp); 1489 capsule_resp->rccqe = tcp_req->req.rsp->nvme_cpl; 1490 if (tqpair->host_hdgst_enable) { 1491 capsule_resp->common.flags |= SPDK_NVME_TCP_CH_FLAGS_HDGSTF; 1492 capsule_resp->common.plen += SPDK_NVME_TCP_DIGEST_LEN; 1493 } 1494 1495 nvmf_tcp_qpair_write_pdu(tqpair, rsp_pdu, nvmf_tcp_request_free, tcp_req); 1496 } 1497 1498 static void 1499 nvmf_tcp_pdu_c2h_data_complete(void *cb_arg) 1500 { 1501 struct spdk_nvmf_tcp_req *tcp_req = cb_arg; 1502 struct spdk_nvmf_tcp_qpair *tqpair = SPDK_CONTAINEROF(tcp_req->req.qpair, 1503 struct spdk_nvmf_tcp_qpair, qpair); 1504 struct spdk_nvmf_tcp_transport *ttransport = SPDK_CONTAINEROF( 1505 tcp_req->req.qpair->transport, struct spdk_nvmf_tcp_transport, transport); 1506 1507 assert(tqpair != NULL); 1508 1509 if (spdk_unlikely(tcp_req->pdu->rw_offset < tcp_req->req.length)) { 1510 SPDK_DEBUGLOG(nvmf_tcp, "sending another C2H part, offset %u length %u\n", tcp_req->pdu->rw_offset, 1511 tcp_req->req.length); 1512 _nvmf_tcp_send_c2h_data(tqpair, tcp_req); 1513 return; 1514 } 1515 1516 if (ttransport->tcp_opts.c2h_success) { 1517 nvmf_tcp_request_free(tcp_req); 1518 } else { 1519 nvmf_tcp_req_pdu_fini(tcp_req); 1520 nvmf_tcp_send_capsule_resp_pdu(tcp_req, tqpair); 1521 } 1522 } 1523 1524 static void 1525 nvmf_tcp_r2t_complete(void *cb_arg) 1526 { 1527 struct spdk_nvmf_tcp_req *tcp_req = cb_arg; 1528 struct spdk_nvmf_tcp_transport *ttransport; 1529 1530 nvmf_tcp_req_pdu_fini(tcp_req); 1531 1532 ttransport = SPDK_CONTAINEROF(tcp_req->req.qpair->transport, 1533 struct spdk_nvmf_tcp_transport, transport); 1534 1535 nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_TRANSFERRING_HOST_TO_CONTROLLER); 1536 1537 if (tcp_req->h2c_offset == tcp_req->req.length) { 1538 nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_READY_TO_EXECUTE); 1539 nvmf_tcp_req_process(ttransport, tcp_req); 1540 } 1541 } 1542 1543 static void 1544 nvmf_tcp_send_r2t_pdu(struct spdk_nvmf_tcp_qpair *tqpair, 1545 struct spdk_nvmf_tcp_req *tcp_req) 1546 { 1547 struct nvme_tcp_pdu *rsp_pdu; 1548 struct spdk_nvme_tcp_r2t_hdr *r2t; 1549 1550 rsp_pdu = nvmf_tcp_req_pdu_init(tcp_req); 1551 assert(rsp_pdu != NULL); 1552 1553 r2t = &rsp_pdu->hdr.r2t; 1554 r2t->common.pdu_type = SPDK_NVME_TCP_PDU_TYPE_R2T; 1555 r2t->common.plen = r2t->common.hlen = sizeof(*r2t); 1556 1557 if (tqpair->host_hdgst_enable) { 1558 r2t->common.flags |= SPDK_NVME_TCP_CH_FLAGS_HDGSTF; 1559 r2t->common.plen += SPDK_NVME_TCP_DIGEST_LEN; 1560 } 1561 1562 r2t->cccid = tcp_req->req.cmd->nvme_cmd.cid; 1563 r2t->ttag = tcp_req->ttag; 1564 r2t->r2to = tcp_req->h2c_offset; 1565 r2t->r2tl = tcp_req->req.length; 1566 1567 nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_AWAITING_R2T_ACK); 1568 1569 SPDK_DEBUGLOG(nvmf_tcp, 1570 "tcp_req(%p) on tqpair(%p), r2t_info: cccid=%u, ttag=%u, r2to=%u, r2tl=%u\n", 1571 tcp_req, tqpair, r2t->cccid, r2t->ttag, r2t->r2to, r2t->r2tl); 1572 nvmf_tcp_qpair_write_pdu(tqpair, rsp_pdu, nvmf_tcp_r2t_complete, tcp_req); 1573 } 1574 1575 static void 1576 nvmf_tcp_h2c_data_payload_handle(struct spdk_nvmf_tcp_transport *ttransport, 1577 struct spdk_nvmf_tcp_qpair *tqpair, 1578 struct nvme_tcp_pdu *pdu) 1579 { 1580 struct spdk_nvmf_tcp_req *tcp_req; 1581 1582 tcp_req = pdu->req; 1583 assert(tcp_req != NULL); 1584 1585 SPDK_DEBUGLOG(nvmf_tcp, "enter\n"); 1586 1587 tcp_req->h2c_offset += pdu->data_len; 1588 1589 nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_READY); 1590 1591 /* Wait for all of the data to arrive AND for the initial R2T PDU send to be 1592 * acknowledged before moving on. */ 1593 if (tcp_req->h2c_offset == tcp_req->req.length && 1594 tcp_req->state == TCP_REQUEST_STATE_TRANSFERRING_HOST_TO_CONTROLLER) { 1595 nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_READY_TO_EXECUTE); 1596 nvmf_tcp_req_process(ttransport, tcp_req); 1597 } 1598 } 1599 1600 static void 1601 nvmf_tcp_h2c_term_req_dump(struct spdk_nvme_tcp_term_req_hdr *h2c_term_req) 1602 { 1603 SPDK_ERRLOG("Error info of pdu(%p): %s\n", h2c_term_req, 1604 spdk_nvmf_tcp_term_req_fes_str[h2c_term_req->fes]); 1605 if ((h2c_term_req->fes == SPDK_NVME_TCP_TERM_REQ_FES_INVALID_HEADER_FIELD) || 1606 (h2c_term_req->fes == SPDK_NVME_TCP_TERM_REQ_FES_INVALID_DATA_UNSUPPORTED_PARAMETER)) { 1607 SPDK_DEBUGLOG(nvmf_tcp, "The offset from the start of the PDU header is %u\n", 1608 DGET32(h2c_term_req->fei)); 1609 } 1610 } 1611 1612 static void 1613 nvmf_tcp_h2c_term_req_hdr_handle(struct spdk_nvmf_tcp_qpair *tqpair, 1614 struct nvme_tcp_pdu *pdu) 1615 { 1616 struct spdk_nvme_tcp_term_req_hdr *h2c_term_req = &pdu->hdr.term_req; 1617 uint32_t error_offset = 0; 1618 enum spdk_nvme_tcp_term_req_fes fes; 1619 1620 if (h2c_term_req->fes > SPDK_NVME_TCP_TERM_REQ_FES_INVALID_DATA_UNSUPPORTED_PARAMETER) { 1621 SPDK_ERRLOG("Fatal Error Status(FES) is unknown for h2c_term_req pdu=%p\n", pdu); 1622 fes = SPDK_NVME_TCP_TERM_REQ_FES_INVALID_HEADER_FIELD; 1623 error_offset = offsetof(struct spdk_nvme_tcp_term_req_hdr, fes); 1624 goto end; 1625 } 1626 1627 /* set the data buffer */ 1628 nvme_tcp_pdu_set_data(pdu, (uint8_t *)pdu->hdr.raw + h2c_term_req->common.hlen, 1629 h2c_term_req->common.plen - h2c_term_req->common.hlen); 1630 nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_PAYLOAD); 1631 return; 1632 end: 1633 nvmf_tcp_send_c2h_term_req(tqpair, pdu, fes, error_offset); 1634 } 1635 1636 static void 1637 nvmf_tcp_h2c_term_req_payload_handle(struct spdk_nvmf_tcp_qpair *tqpair, 1638 struct nvme_tcp_pdu *pdu) 1639 { 1640 struct spdk_nvme_tcp_term_req_hdr *h2c_term_req = &pdu->hdr.term_req; 1641 1642 nvmf_tcp_h2c_term_req_dump(h2c_term_req); 1643 nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_ERROR); 1644 } 1645 1646 static void 1647 nvmf_tcp_pdu_payload_handle(struct spdk_nvmf_tcp_qpair *tqpair, 1648 struct spdk_nvmf_tcp_transport *ttransport) 1649 { 1650 int rc = 0; 1651 struct nvme_tcp_pdu *pdu; 1652 uint32_t crc32c, error_offset = 0; 1653 enum spdk_nvme_tcp_term_req_fes fes; 1654 1655 assert(tqpair->recv_state == NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_PAYLOAD); 1656 pdu = &tqpair->pdu_in_progress; 1657 1658 SPDK_DEBUGLOG(nvmf_tcp, "enter\n"); 1659 /* check data digest if need */ 1660 if (pdu->ddgst_enable) { 1661 crc32c = nvme_tcp_pdu_calc_data_digest(pdu); 1662 rc = MATCH_DIGEST_WORD(pdu->data_digest, crc32c); 1663 if (rc == 0) { 1664 SPDK_ERRLOG("Data digest error on tqpair=(%p) with pdu=%p\n", tqpair, pdu); 1665 fes = SPDK_NVME_TCP_TERM_REQ_FES_HDGST_ERROR; 1666 nvmf_tcp_send_c2h_term_req(tqpair, pdu, fes, error_offset); 1667 return; 1668 1669 } 1670 } 1671 1672 switch (pdu->hdr.common.pdu_type) { 1673 case SPDK_NVME_TCP_PDU_TYPE_CAPSULE_CMD: 1674 nvmf_tcp_capsule_cmd_payload_handle(ttransport, tqpair, pdu); 1675 break; 1676 case SPDK_NVME_TCP_PDU_TYPE_H2C_DATA: 1677 nvmf_tcp_h2c_data_payload_handle(ttransport, tqpair, pdu); 1678 break; 1679 1680 case SPDK_NVME_TCP_PDU_TYPE_H2C_TERM_REQ: 1681 nvmf_tcp_h2c_term_req_payload_handle(tqpair, pdu); 1682 break; 1683 1684 default: 1685 /* The code should not go to here */ 1686 SPDK_ERRLOG("The code should not go to here\n"); 1687 break; 1688 } 1689 } 1690 1691 static void 1692 nvmf_tcp_send_icresp_complete(void *cb_arg) 1693 { 1694 struct spdk_nvmf_tcp_qpair *tqpair = cb_arg; 1695 1696 tqpair->state = NVME_TCP_QPAIR_STATE_RUNNING; 1697 } 1698 1699 static void 1700 nvmf_tcp_icreq_handle(struct spdk_nvmf_tcp_transport *ttransport, 1701 struct spdk_nvmf_tcp_qpair *tqpair, 1702 struct nvme_tcp_pdu *pdu) 1703 { 1704 struct spdk_nvme_tcp_ic_req *ic_req = &pdu->hdr.ic_req; 1705 struct nvme_tcp_pdu *rsp_pdu; 1706 struct spdk_nvme_tcp_ic_resp *ic_resp; 1707 uint32_t error_offset = 0; 1708 enum spdk_nvme_tcp_term_req_fes fes; 1709 1710 /* Only PFV 0 is defined currently */ 1711 if (ic_req->pfv != 0) { 1712 SPDK_ERRLOG("Expected ICReq PFV %u, got %u\n", 0u, ic_req->pfv); 1713 fes = SPDK_NVME_TCP_TERM_REQ_FES_INVALID_HEADER_FIELD; 1714 error_offset = offsetof(struct spdk_nvme_tcp_ic_req, pfv); 1715 goto end; 1716 } 1717 1718 /* MAXR2T is 0's based */ 1719 SPDK_DEBUGLOG(nvmf_tcp, "maxr2t =%u\n", (ic_req->maxr2t + 1u)); 1720 1721 tqpair->host_hdgst_enable = ic_req->dgst.bits.hdgst_enable ? true : false; 1722 if (!tqpair->host_hdgst_enable) { 1723 tqpair->recv_buf_size -= SPDK_NVME_TCP_DIGEST_LEN * SPDK_NVMF_TCP_RECV_BUF_SIZE_FACTOR; 1724 } 1725 1726 tqpair->host_ddgst_enable = ic_req->dgst.bits.ddgst_enable ? true : false; 1727 if (!tqpair->host_ddgst_enable) { 1728 tqpair->recv_buf_size -= SPDK_NVME_TCP_DIGEST_LEN * SPDK_NVMF_TCP_RECV_BUF_SIZE_FACTOR; 1729 } 1730 1731 tqpair->recv_buf_size = spdk_max(tqpair->recv_buf_size, MIN_SOCK_PIPE_SIZE); 1732 /* Now that we know whether digests are enabled, properly size the receive buffer */ 1733 if (spdk_sock_set_recvbuf(tqpair->sock, tqpair->recv_buf_size) < 0) { 1734 SPDK_WARNLOG("Unable to allocate enough memory for receive buffer on tqpair=%p with size=%d\n", 1735 tqpair, 1736 tqpair->recv_buf_size); 1737 /* Not fatal. */ 1738 } 1739 1740 if (tqpair->host_hdgst_enable || tqpair->host_ddgst_enable) { 1741 tqpair->accel_channel = spdk_accel_engine_get_io_channel(); 1742 if (spdk_unlikely(!tqpair->accel_channel)) { 1743 fes = SPDK_NVME_TCP_TERM_REQ_FES_HDGST_ERROR; 1744 error_offset = offsetof(struct spdk_nvme_tcp_ic_req, dgst); 1745 SPDK_ERRLOG("Unabled to get accel_channel for tqpair=%p, failed to enable digest for header or data\n", 1746 tqpair); 1747 goto end; 1748 } 1749 } 1750 1751 tqpair->cpda = spdk_min(ic_req->hpda, SPDK_NVME_TCP_CPDA_MAX); 1752 SPDK_DEBUGLOG(nvmf_tcp, "cpda of tqpair=(%p) is : %u\n", tqpair, tqpair->cpda); 1753 1754 rsp_pdu = tqpair->mgmt_pdu; 1755 1756 ic_resp = &rsp_pdu->hdr.ic_resp; 1757 ic_resp->common.pdu_type = SPDK_NVME_TCP_PDU_TYPE_IC_RESP; 1758 ic_resp->common.hlen = ic_resp->common.plen = sizeof(*ic_resp); 1759 ic_resp->pfv = 0; 1760 ic_resp->cpda = tqpair->cpda; 1761 ic_resp->maxh2cdata = ttransport->transport.opts.max_io_size; 1762 ic_resp->dgst.bits.hdgst_enable = tqpair->host_hdgst_enable ? 1 : 0; 1763 ic_resp->dgst.bits.ddgst_enable = tqpair->host_ddgst_enable ? 1 : 0; 1764 1765 SPDK_DEBUGLOG(nvmf_tcp, "host_hdgst_enable: %u\n", tqpair->host_hdgst_enable); 1766 SPDK_DEBUGLOG(nvmf_tcp, "host_ddgst_enable: %u\n", tqpair->host_ddgst_enable); 1767 1768 tqpair->state = NVME_TCP_QPAIR_STATE_INITIALIZING; 1769 nvmf_tcp_qpair_write_pdu(tqpair, rsp_pdu, nvmf_tcp_send_icresp_complete, tqpair); 1770 nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_READY); 1771 return; 1772 end: 1773 nvmf_tcp_send_c2h_term_req(tqpair, pdu, fes, error_offset); 1774 } 1775 1776 static void 1777 nvmf_tcp_pdu_psh_handle(struct spdk_nvmf_tcp_qpair *tqpair, 1778 struct spdk_nvmf_tcp_transport *ttransport) 1779 { 1780 struct nvme_tcp_pdu *pdu; 1781 int rc; 1782 uint32_t crc32c, error_offset = 0; 1783 enum spdk_nvme_tcp_term_req_fes fes; 1784 1785 assert(tqpair->recv_state == NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_PSH); 1786 pdu = &tqpair->pdu_in_progress; 1787 1788 SPDK_DEBUGLOG(nvmf_tcp, "pdu type of tqpair(%p) is %d\n", tqpair, 1789 pdu->hdr.common.pdu_type); 1790 /* check header digest if needed */ 1791 if (pdu->has_hdgst) { 1792 SPDK_DEBUGLOG(nvmf_tcp, "Compare the header of pdu=%p on tqpair=%p\n", pdu, tqpair); 1793 crc32c = nvme_tcp_pdu_calc_header_digest(pdu); 1794 rc = MATCH_DIGEST_WORD((uint8_t *)pdu->hdr.raw + pdu->hdr.common.hlen, crc32c); 1795 if (rc == 0) { 1796 SPDK_ERRLOG("Header digest error on tqpair=(%p) with pdu=%p\n", tqpair, pdu); 1797 fes = SPDK_NVME_TCP_TERM_REQ_FES_HDGST_ERROR; 1798 nvmf_tcp_send_c2h_term_req(tqpair, pdu, fes, error_offset); 1799 return; 1800 1801 } 1802 } 1803 1804 switch (pdu->hdr.common.pdu_type) { 1805 case SPDK_NVME_TCP_PDU_TYPE_IC_REQ: 1806 nvmf_tcp_icreq_handle(ttransport, tqpair, pdu); 1807 break; 1808 case SPDK_NVME_TCP_PDU_TYPE_CAPSULE_CMD: 1809 nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_AWAIT_REQ); 1810 break; 1811 case SPDK_NVME_TCP_PDU_TYPE_H2C_DATA: 1812 nvmf_tcp_h2c_data_hdr_handle(ttransport, tqpair, pdu); 1813 break; 1814 1815 case SPDK_NVME_TCP_PDU_TYPE_H2C_TERM_REQ: 1816 nvmf_tcp_h2c_term_req_hdr_handle(tqpair, pdu); 1817 break; 1818 1819 default: 1820 SPDK_ERRLOG("Unexpected PDU type 0x%02x\n", tqpair->pdu_in_progress.hdr.common.pdu_type); 1821 fes = SPDK_NVME_TCP_TERM_REQ_FES_INVALID_HEADER_FIELD; 1822 error_offset = 1; 1823 nvmf_tcp_send_c2h_term_req(tqpair, pdu, fes, error_offset); 1824 break; 1825 } 1826 } 1827 1828 static void 1829 nvmf_tcp_pdu_ch_handle(struct spdk_nvmf_tcp_qpair *tqpair) 1830 { 1831 struct nvme_tcp_pdu *pdu; 1832 uint32_t error_offset = 0; 1833 enum spdk_nvme_tcp_term_req_fes fes; 1834 uint8_t expected_hlen, pdo; 1835 bool plen_error = false, pdo_error = false; 1836 1837 assert(tqpair->recv_state == NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_CH); 1838 pdu = &tqpair->pdu_in_progress; 1839 1840 if (pdu->hdr.common.pdu_type == SPDK_NVME_TCP_PDU_TYPE_IC_REQ) { 1841 if (tqpair->state != NVME_TCP_QPAIR_STATE_INVALID) { 1842 SPDK_ERRLOG("Already received ICreq PDU, and reject this pdu=%p\n", pdu); 1843 fes = SPDK_NVME_TCP_TERM_REQ_FES_PDU_SEQUENCE_ERROR; 1844 goto err; 1845 } 1846 expected_hlen = sizeof(struct spdk_nvme_tcp_ic_req); 1847 if (pdu->hdr.common.plen != expected_hlen) { 1848 plen_error = true; 1849 } 1850 } else { 1851 if (tqpair->state != NVME_TCP_QPAIR_STATE_RUNNING) { 1852 SPDK_ERRLOG("The TCP/IP connection is not negotitated\n"); 1853 fes = SPDK_NVME_TCP_TERM_REQ_FES_PDU_SEQUENCE_ERROR; 1854 goto err; 1855 } 1856 1857 switch (pdu->hdr.common.pdu_type) { 1858 case SPDK_NVME_TCP_PDU_TYPE_CAPSULE_CMD: 1859 expected_hlen = sizeof(struct spdk_nvme_tcp_cmd); 1860 pdo = pdu->hdr.common.pdo; 1861 if ((tqpair->cpda != 0) && (pdo % ((tqpair->cpda + 1) << 2) != 0)) { 1862 pdo_error = true; 1863 break; 1864 } 1865 1866 if (pdu->hdr.common.plen < expected_hlen) { 1867 plen_error = true; 1868 } 1869 break; 1870 case SPDK_NVME_TCP_PDU_TYPE_H2C_DATA: 1871 expected_hlen = sizeof(struct spdk_nvme_tcp_h2c_data_hdr); 1872 pdo = pdu->hdr.common.pdo; 1873 if ((tqpair->cpda != 0) && (pdo % ((tqpair->cpda + 1) << 2) != 0)) { 1874 pdo_error = true; 1875 break; 1876 } 1877 if (pdu->hdr.common.plen < expected_hlen) { 1878 plen_error = true; 1879 } 1880 break; 1881 1882 case SPDK_NVME_TCP_PDU_TYPE_H2C_TERM_REQ: 1883 expected_hlen = sizeof(struct spdk_nvme_tcp_term_req_hdr); 1884 if ((pdu->hdr.common.plen <= expected_hlen) || 1885 (pdu->hdr.common.plen > SPDK_NVME_TCP_TERM_REQ_PDU_MAX_SIZE)) { 1886 plen_error = true; 1887 } 1888 break; 1889 1890 default: 1891 SPDK_ERRLOG("Unexpected PDU type 0x%02x\n", pdu->hdr.common.pdu_type); 1892 fes = SPDK_NVME_TCP_TERM_REQ_FES_INVALID_HEADER_FIELD; 1893 error_offset = offsetof(struct spdk_nvme_tcp_common_pdu_hdr, pdu_type); 1894 goto err; 1895 } 1896 } 1897 1898 if (pdu->hdr.common.hlen != expected_hlen) { 1899 SPDK_ERRLOG("PDU type=0x%02x, Expected ICReq header length %u, got %u on tqpair=%p\n", 1900 pdu->hdr.common.pdu_type, 1901 expected_hlen, pdu->hdr.common.hlen, tqpair); 1902 fes = SPDK_NVME_TCP_TERM_REQ_FES_INVALID_HEADER_FIELD; 1903 error_offset = offsetof(struct spdk_nvme_tcp_common_pdu_hdr, hlen); 1904 goto err; 1905 } else if (pdo_error) { 1906 fes = SPDK_NVME_TCP_TERM_REQ_FES_INVALID_HEADER_FIELD; 1907 error_offset = offsetof(struct spdk_nvme_tcp_common_pdu_hdr, pdo); 1908 } else if (plen_error) { 1909 fes = SPDK_NVME_TCP_TERM_REQ_FES_INVALID_HEADER_FIELD; 1910 error_offset = offsetof(struct spdk_nvme_tcp_common_pdu_hdr, plen); 1911 goto err; 1912 } else { 1913 nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_PSH); 1914 nvme_tcp_pdu_calc_psh_len(&tqpair->pdu_in_progress, tqpair->host_hdgst_enable); 1915 return; 1916 } 1917 err: 1918 nvmf_tcp_send_c2h_term_req(tqpair, pdu, fes, error_offset); 1919 } 1920 1921 static int 1922 nvmf_tcp_pdu_payload_insert_dif(struct nvme_tcp_pdu *pdu, uint32_t read_offset, 1923 int read_len) 1924 { 1925 int rc; 1926 1927 rc = spdk_dif_generate_stream(pdu->data_iov, pdu->data_iovcnt, 1928 read_offset, read_len, pdu->dif_ctx); 1929 if (rc != 0) { 1930 SPDK_ERRLOG("DIF generate failed\n"); 1931 } 1932 1933 return rc; 1934 } 1935 1936 static int 1937 nvmf_tcp_sock_process(struct spdk_nvmf_tcp_qpair *tqpair) 1938 { 1939 int rc = 0; 1940 struct nvme_tcp_pdu *pdu; 1941 enum nvme_tcp_pdu_recv_state prev_state; 1942 uint32_t data_len; 1943 struct spdk_nvmf_tcp_transport *ttransport = SPDK_CONTAINEROF(tqpair->qpair.transport, 1944 struct spdk_nvmf_tcp_transport, transport); 1945 1946 /* The loop here is to allow for several back-to-back state changes. */ 1947 do { 1948 prev_state = tqpair->recv_state; 1949 SPDK_DEBUGLOG(nvmf_tcp, "tqpair(%p) recv pdu entering state %d\n", tqpair, prev_state); 1950 1951 pdu = &tqpair->pdu_in_progress; 1952 switch (tqpair->recv_state) { 1953 /* Wait for the common header */ 1954 case NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_READY: 1955 case NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_CH: 1956 if (spdk_unlikely(tqpair->state == NVME_TCP_QPAIR_STATE_INITIALIZING)) { 1957 return rc; 1958 } 1959 1960 rc = nvme_tcp_read_data(tqpair->sock, 1961 sizeof(struct spdk_nvme_tcp_common_pdu_hdr) - pdu->ch_valid_bytes, 1962 (void *)&pdu->hdr.common + pdu->ch_valid_bytes); 1963 if (rc < 0) { 1964 SPDK_DEBUGLOG(nvmf_tcp, "will disconnect tqpair=%p\n", tqpair); 1965 return NVME_TCP_PDU_FATAL; 1966 } else if (rc > 0) { 1967 pdu->ch_valid_bytes += rc; 1968 spdk_trace_record(TRACE_TCP_READ_FROM_SOCKET_DONE, 0, rc, 0, 0); 1969 if (spdk_likely(tqpair->recv_state == NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_READY)) { 1970 nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_CH); 1971 } 1972 } 1973 1974 if (pdu->ch_valid_bytes < sizeof(struct spdk_nvme_tcp_common_pdu_hdr)) { 1975 return NVME_TCP_PDU_IN_PROGRESS; 1976 } 1977 1978 /* The command header of this PDU has now been read from the socket. */ 1979 nvmf_tcp_pdu_ch_handle(tqpair); 1980 break; 1981 /* Wait for the pdu specific header */ 1982 case NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_PSH: 1983 rc = nvme_tcp_read_data(tqpair->sock, 1984 pdu->psh_len - pdu->psh_valid_bytes, 1985 (void *)&pdu->hdr.raw + sizeof(struct spdk_nvme_tcp_common_pdu_hdr) + pdu->psh_valid_bytes); 1986 if (rc < 0) { 1987 return NVME_TCP_PDU_FATAL; 1988 } else if (rc > 0) { 1989 spdk_trace_record(TRACE_TCP_READ_FROM_SOCKET_DONE, 1990 0, rc, 0, 0); 1991 pdu->psh_valid_bytes += rc; 1992 } 1993 1994 if (pdu->psh_valid_bytes < pdu->psh_len) { 1995 return NVME_TCP_PDU_IN_PROGRESS; 1996 } 1997 1998 /* All header(ch, psh, head digist) of this PDU has now been read from the socket. */ 1999 nvmf_tcp_pdu_psh_handle(tqpair, ttransport); 2000 break; 2001 /* Wait for the req slot */ 2002 case NVME_TCP_PDU_RECV_STATE_AWAIT_REQ: 2003 nvmf_tcp_capsule_cmd_hdr_handle(ttransport, tqpair, pdu); 2004 break; 2005 case NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_PAYLOAD: 2006 /* check whether the data is valid, if not we just return */ 2007 if (!pdu->data_len) { 2008 return NVME_TCP_PDU_IN_PROGRESS; 2009 } 2010 2011 data_len = pdu->data_len; 2012 /* data digest */ 2013 if (spdk_unlikely((pdu->hdr.common.pdu_type != SPDK_NVME_TCP_PDU_TYPE_H2C_TERM_REQ) && 2014 tqpair->host_ddgst_enable)) { 2015 data_len += SPDK_NVME_TCP_DIGEST_LEN; 2016 pdu->ddgst_enable = true; 2017 } 2018 2019 rc = nvme_tcp_read_payload_data(tqpair->sock, pdu); 2020 if (rc < 0) { 2021 return NVME_TCP_PDU_FATAL; 2022 } 2023 pdu->rw_offset += rc; 2024 2025 if (spdk_unlikely(pdu->dif_ctx != NULL)) { 2026 rc = nvmf_tcp_pdu_payload_insert_dif(pdu, pdu->rw_offset - rc, rc); 2027 if (rc != 0) { 2028 return NVME_TCP_PDU_FATAL; 2029 } 2030 } 2031 2032 if (pdu->rw_offset < data_len) { 2033 return NVME_TCP_PDU_IN_PROGRESS; 2034 } 2035 2036 /* All of this PDU has now been read from the socket. */ 2037 nvmf_tcp_pdu_payload_handle(tqpair, ttransport); 2038 break; 2039 case NVME_TCP_PDU_RECV_STATE_ERROR: 2040 if (!spdk_sock_is_connected(tqpair->sock)) { 2041 return NVME_TCP_PDU_FATAL; 2042 } 2043 break; 2044 default: 2045 assert(0); 2046 SPDK_ERRLOG("code should not come to here"); 2047 break; 2048 } 2049 } while (tqpair->recv_state != prev_state); 2050 2051 return rc; 2052 } 2053 2054 static inline void * 2055 nvmf_tcp_control_msg_get(struct spdk_nvmf_tcp_control_msg_list *list) 2056 { 2057 struct spdk_nvmf_tcp_control_msg *msg; 2058 2059 assert(list); 2060 2061 msg = STAILQ_FIRST(&list->free_msgs); 2062 if (!msg) { 2063 SPDK_DEBUGLOG(nvmf_tcp, "Out of control messages\n"); 2064 return NULL; 2065 } 2066 STAILQ_REMOVE_HEAD(&list->free_msgs, link); 2067 return msg; 2068 } 2069 2070 static inline void 2071 nvmf_tcp_control_msg_put(struct spdk_nvmf_tcp_control_msg_list *list, void *_msg) 2072 { 2073 struct spdk_nvmf_tcp_control_msg *msg = _msg; 2074 2075 assert(list); 2076 STAILQ_INSERT_HEAD(&list->free_msgs, msg, link); 2077 } 2078 2079 static int 2080 nvmf_tcp_req_parse_sgl(struct spdk_nvmf_tcp_req *tcp_req, 2081 struct spdk_nvmf_transport *transport, 2082 struct spdk_nvmf_transport_poll_group *group) 2083 { 2084 struct spdk_nvmf_request *req = &tcp_req->req; 2085 struct spdk_nvme_cmd *cmd; 2086 struct spdk_nvme_cpl *rsp; 2087 struct spdk_nvme_sgl_descriptor *sgl; 2088 struct spdk_nvmf_tcp_poll_group *tgroup; 2089 uint32_t length; 2090 2091 cmd = &req->cmd->nvme_cmd; 2092 rsp = &req->rsp->nvme_cpl; 2093 sgl = &cmd->dptr.sgl1; 2094 2095 length = sgl->unkeyed.length; 2096 2097 if (sgl->generic.type == SPDK_NVME_SGL_TYPE_TRANSPORT_DATA_BLOCK && 2098 sgl->unkeyed.subtype == SPDK_NVME_SGL_SUBTYPE_TRANSPORT) { 2099 if (length > transport->opts.max_io_size) { 2100 SPDK_ERRLOG("SGL length 0x%x exceeds max io size 0x%x\n", 2101 length, transport->opts.max_io_size); 2102 rsp->status.sc = SPDK_NVME_SC_DATA_SGL_LENGTH_INVALID; 2103 return -1; 2104 } 2105 2106 /* fill request length and populate iovs */ 2107 req->length = length; 2108 2109 SPDK_DEBUGLOG(nvmf_tcp, "Data requested length= 0x%x\n", length); 2110 2111 if (spdk_unlikely(req->dif.dif_insert_or_strip)) { 2112 req->dif.orig_length = length; 2113 length = spdk_dif_get_length_with_md(length, &req->dif.dif_ctx); 2114 req->dif.elba_length = length; 2115 } 2116 2117 if (spdk_nvmf_request_get_buffers(req, group, transport, length)) { 2118 /* No available buffers. Queue this request up. */ 2119 SPDK_DEBUGLOG(nvmf_tcp, "No available large data buffers. Queueing request %p\n", 2120 tcp_req); 2121 return 0; 2122 } 2123 2124 /* backward compatible */ 2125 req->data = req->iov[0].iov_base; 2126 2127 SPDK_DEBUGLOG(nvmf_tcp, "Request %p took %d buffer/s from central pool, and data=%p\n", 2128 tcp_req, req->iovcnt, req->data); 2129 2130 return 0; 2131 } else if (sgl->generic.type == SPDK_NVME_SGL_TYPE_DATA_BLOCK && 2132 sgl->unkeyed.subtype == SPDK_NVME_SGL_SUBTYPE_OFFSET) { 2133 uint64_t offset = sgl->address; 2134 uint32_t max_len = transport->opts.in_capsule_data_size; 2135 assert(tcp_req->has_incapsule_data); 2136 2137 SPDK_DEBUGLOG(nvmf_tcp, "In-capsule data: offset 0x%" PRIx64 ", length 0x%x\n", 2138 offset, length); 2139 2140 if (offset > max_len) { 2141 SPDK_ERRLOG("In-capsule offset 0x%" PRIx64 " exceeds capsule length 0x%x\n", 2142 offset, max_len); 2143 rsp->status.sc = SPDK_NVME_SC_INVALID_SGL_OFFSET; 2144 return -1; 2145 } 2146 max_len -= (uint32_t)offset; 2147 2148 if (spdk_unlikely(length > max_len)) { 2149 /* According to the SPEC we should support ICD up to 8192 bytes for admin and fabric commands */ 2150 if (length <= SPDK_NVME_TCP_IN_CAPSULE_DATA_MAX_SIZE && 2151 (cmd->opc == SPDK_NVME_OPC_FABRIC || req->qpair->qid == 0)) { 2152 2153 /* Get a buffer from dedicated list */ 2154 SPDK_DEBUGLOG(nvmf_tcp, "Getting a buffer from control msg list\n"); 2155 tgroup = SPDK_CONTAINEROF(group, struct spdk_nvmf_tcp_poll_group, group); 2156 assert(tgroup->control_msg_list); 2157 req->data = nvmf_tcp_control_msg_get(tgroup->control_msg_list); 2158 if (!req->data) { 2159 /* No available buffers. Queue this request up. */ 2160 SPDK_DEBUGLOG(nvmf_tcp, "No available ICD buffers. Queueing request %p\n", tcp_req); 2161 return 0; 2162 } 2163 } else { 2164 SPDK_ERRLOG("In-capsule data length 0x%x exceeds capsule length 0x%x\n", 2165 length, max_len); 2166 rsp->status.sc = SPDK_NVME_SC_DATA_SGL_LENGTH_INVALID; 2167 return -1; 2168 } 2169 } else { 2170 req->data = tcp_req->buf; 2171 } 2172 2173 req->length = length; 2174 req->data_from_pool = false; 2175 2176 if (spdk_unlikely(req->dif.dif_insert_or_strip)) { 2177 length = spdk_dif_get_length_with_md(length, &req->dif.dif_ctx); 2178 req->dif.elba_length = length; 2179 } 2180 2181 req->iov[0].iov_base = req->data; 2182 req->iov[0].iov_len = length; 2183 req->iovcnt = 1; 2184 2185 return 0; 2186 } 2187 2188 SPDK_ERRLOG("Invalid NVMf I/O Command SGL: Type 0x%x, Subtype 0x%x\n", 2189 sgl->generic.type, sgl->generic.subtype); 2190 rsp->status.sc = SPDK_NVME_SC_SGL_DESCRIPTOR_TYPE_INVALID; 2191 return -1; 2192 } 2193 2194 static inline enum spdk_nvme_media_error_status_code 2195 nvmf_tcp_dif_error_to_compl_status(uint8_t err_type) { 2196 enum spdk_nvme_media_error_status_code result; 2197 2198 switch (err_type) 2199 { 2200 case SPDK_DIF_REFTAG_ERROR: 2201 result = SPDK_NVME_SC_REFERENCE_TAG_CHECK_ERROR; 2202 break; 2203 case SPDK_DIF_APPTAG_ERROR: 2204 result = SPDK_NVME_SC_APPLICATION_TAG_CHECK_ERROR; 2205 break; 2206 case SPDK_DIF_GUARD_ERROR: 2207 result = SPDK_NVME_SC_GUARD_CHECK_ERROR; 2208 break; 2209 default: 2210 SPDK_UNREACHABLE(); 2211 break; 2212 } 2213 2214 return result; 2215 } 2216 2217 static void 2218 _nvmf_tcp_send_c2h_data(struct spdk_nvmf_tcp_qpair *tqpair, 2219 struct spdk_nvmf_tcp_req *tcp_req) 2220 { 2221 struct spdk_nvmf_tcp_transport *ttransport = SPDK_CONTAINEROF( 2222 tqpair->qpair.transport, struct spdk_nvmf_tcp_transport, transport); 2223 struct nvme_tcp_pdu *rsp_pdu; 2224 struct spdk_nvme_tcp_c2h_data_hdr *c2h_data; 2225 uint32_t plen, pdo, alignment; 2226 int rc; 2227 2228 SPDK_DEBUGLOG(nvmf_tcp, "enter\n"); 2229 2230 rsp_pdu = tcp_req->pdu; 2231 assert(rsp_pdu != NULL); 2232 assert(tcp_req->pdu_in_use); 2233 2234 c2h_data = &rsp_pdu->hdr.c2h_data; 2235 c2h_data->common.pdu_type = SPDK_NVME_TCP_PDU_TYPE_C2H_DATA; 2236 plen = c2h_data->common.hlen = sizeof(*c2h_data); 2237 2238 if (tqpair->host_hdgst_enable) { 2239 plen += SPDK_NVME_TCP_DIGEST_LEN; 2240 c2h_data->common.flags |= SPDK_NVME_TCP_CH_FLAGS_HDGSTF; 2241 } 2242 2243 /* set the psh */ 2244 c2h_data->cccid = tcp_req->req.cmd->nvme_cmd.cid; 2245 c2h_data->datal = tcp_req->req.length - tcp_req->pdu->rw_offset; 2246 c2h_data->datao = tcp_req->pdu->rw_offset; 2247 2248 /* set the padding */ 2249 rsp_pdu->padding_len = 0; 2250 pdo = plen; 2251 if (tqpair->cpda) { 2252 alignment = (tqpair->cpda + 1) << 2; 2253 if (plen % alignment != 0) { 2254 pdo = (plen + alignment) / alignment * alignment; 2255 rsp_pdu->padding_len = pdo - plen; 2256 plen = pdo; 2257 } 2258 } 2259 2260 c2h_data->common.pdo = pdo; 2261 plen += c2h_data->datal; 2262 if (tqpair->host_ddgst_enable) { 2263 c2h_data->common.flags |= SPDK_NVME_TCP_CH_FLAGS_DDGSTF; 2264 plen += SPDK_NVME_TCP_DIGEST_LEN; 2265 } 2266 2267 c2h_data->common.plen = plen; 2268 2269 if (spdk_unlikely(tcp_req->req.dif.dif_insert_or_strip)) { 2270 rsp_pdu->dif_ctx = &tcp_req->req.dif.dif_ctx; 2271 } 2272 2273 nvme_tcp_pdu_set_data_buf(rsp_pdu, tcp_req->req.iov, tcp_req->req.iovcnt, 2274 c2h_data->datao, c2h_data->datal); 2275 2276 2277 c2h_data->common.flags |= SPDK_NVME_TCP_C2H_DATA_FLAGS_LAST_PDU; 2278 if (ttransport->tcp_opts.c2h_success) { 2279 c2h_data->common.flags |= SPDK_NVME_TCP_C2H_DATA_FLAGS_SUCCESS; 2280 } 2281 2282 if (spdk_unlikely(tcp_req->req.dif.dif_insert_or_strip)) { 2283 struct spdk_nvme_cpl *rsp = &tcp_req->req.rsp->nvme_cpl; 2284 struct spdk_dif_error err_blk = {}; 2285 uint32_t mapped_length = 0; 2286 uint32_t available_iovs = SPDK_COUNTOF(rsp_pdu->iov); 2287 uint32_t ddgst_len = 0; 2288 2289 if (tqpair->host_ddgst_enable) { 2290 /* Data digest consumes additional iov entry */ 2291 available_iovs--; 2292 /* plen needs to be updated since nvme_tcp_build_iovs compares expected and actual plen */ 2293 ddgst_len = SPDK_NVME_TCP_DIGEST_LEN; 2294 c2h_data->common.plen -= ddgst_len; 2295 } 2296 /* Temp call to estimate if data can be described by limited number of iovs. 2297 * iov vector will be rebuilt in nvmf_tcp_qpair_write_pdu */ 2298 nvme_tcp_build_iovs(rsp_pdu->iov, available_iovs, rsp_pdu, tqpair->host_hdgst_enable, 2299 false, &mapped_length); 2300 2301 if (mapped_length != c2h_data->common.plen) { 2302 c2h_data->datal = mapped_length - (c2h_data->common.plen - c2h_data->datal); 2303 SPDK_DEBUGLOG(nvmf_tcp, 2304 "Part C2H, data_len %u (of %u), PDU len %u, updated PDU len %u, offset %u\n", 2305 c2h_data->datal, tcp_req->req.length, c2h_data->common.plen, mapped_length, rsp_pdu->rw_offset); 2306 c2h_data->common.plen = mapped_length; 2307 2308 /* Rebuild pdu->data_iov since data length is changed */ 2309 nvme_tcp_pdu_set_data_buf(rsp_pdu, tcp_req->req.iov, tcp_req->req.iovcnt, c2h_data->datao, 2310 c2h_data->datal); 2311 2312 c2h_data->common.flags &= ~(SPDK_NVME_TCP_C2H_DATA_FLAGS_LAST_PDU | 2313 SPDK_NVME_TCP_C2H_DATA_FLAGS_SUCCESS); 2314 } 2315 2316 c2h_data->common.plen += ddgst_len; 2317 2318 assert(rsp_pdu->rw_offset <= tcp_req->req.length); 2319 2320 rc = spdk_dif_verify_stream(rsp_pdu->data_iov, rsp_pdu->data_iovcnt, 2321 0, rsp_pdu->data_len, rsp_pdu->dif_ctx, &err_blk); 2322 if (rc != 0) { 2323 SPDK_ERRLOG("DIF error detected. type=%d, offset=%" PRIu32 "\n", 2324 err_blk.err_type, err_blk.err_offset); 2325 rsp->status.sct = SPDK_NVME_SCT_MEDIA_ERROR; 2326 rsp->status.sc = nvmf_tcp_dif_error_to_compl_status(err_blk.err_type); 2327 nvmf_tcp_req_pdu_fini(tcp_req); 2328 nvmf_tcp_send_capsule_resp_pdu(tcp_req, tqpair); 2329 return; 2330 } 2331 } 2332 2333 rsp_pdu->rw_offset += c2h_data->datal; 2334 nvmf_tcp_qpair_write_pdu(tqpair, rsp_pdu, nvmf_tcp_pdu_c2h_data_complete, tcp_req); 2335 } 2336 2337 static void 2338 nvmf_tcp_send_c2h_data(struct spdk_nvmf_tcp_qpair *tqpair, 2339 struct spdk_nvmf_tcp_req *tcp_req) 2340 { 2341 nvmf_tcp_req_pdu_init(tcp_req); 2342 _nvmf_tcp_send_c2h_data(tqpair, tcp_req); 2343 } 2344 2345 static int 2346 request_transfer_out(struct spdk_nvmf_request *req) 2347 { 2348 struct spdk_nvmf_tcp_req *tcp_req; 2349 struct spdk_nvmf_qpair *qpair; 2350 struct spdk_nvmf_tcp_qpair *tqpair; 2351 struct spdk_nvme_cpl *rsp; 2352 2353 SPDK_DEBUGLOG(nvmf_tcp, "enter\n"); 2354 2355 qpair = req->qpair; 2356 rsp = &req->rsp->nvme_cpl; 2357 tcp_req = SPDK_CONTAINEROF(req, struct spdk_nvmf_tcp_req, req); 2358 2359 /* Advance our sq_head pointer */ 2360 if (qpair->sq_head == qpair->sq_head_max) { 2361 qpair->sq_head = 0; 2362 } else { 2363 qpair->sq_head++; 2364 } 2365 rsp->sqhd = qpair->sq_head; 2366 2367 tqpair = SPDK_CONTAINEROF(tcp_req->req.qpair, struct spdk_nvmf_tcp_qpair, qpair); 2368 nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_TRANSFERRING_CONTROLLER_TO_HOST); 2369 if (rsp->status.sc == SPDK_NVME_SC_SUCCESS && req->xfer == SPDK_NVME_DATA_CONTROLLER_TO_HOST) { 2370 nvmf_tcp_send_c2h_data(tqpair, tcp_req); 2371 } else { 2372 nvmf_tcp_send_capsule_resp_pdu(tcp_req, tqpair); 2373 } 2374 2375 return 0; 2376 } 2377 2378 static void 2379 nvmf_tcp_set_incapsule_data(struct spdk_nvmf_tcp_qpair *tqpair, 2380 struct spdk_nvmf_tcp_req *tcp_req) 2381 { 2382 struct nvme_tcp_pdu *pdu; 2383 uint32_t plen = 0; 2384 2385 pdu = &tqpair->pdu_in_progress; 2386 plen = pdu->hdr.common.hlen; 2387 2388 if (tqpair->host_hdgst_enable) { 2389 plen += SPDK_NVME_TCP_DIGEST_LEN; 2390 } 2391 2392 if (pdu->hdr.common.plen != plen) { 2393 tcp_req->has_incapsule_data = true; 2394 } 2395 } 2396 2397 static bool 2398 nvmf_tcp_req_process(struct spdk_nvmf_tcp_transport *ttransport, 2399 struct spdk_nvmf_tcp_req *tcp_req) 2400 { 2401 struct spdk_nvmf_tcp_qpair *tqpair; 2402 int rc; 2403 enum spdk_nvmf_tcp_req_state prev_state; 2404 bool progress = false; 2405 struct spdk_nvmf_transport *transport = &ttransport->transport; 2406 struct spdk_nvmf_transport_poll_group *group; 2407 struct spdk_nvmf_tcp_poll_group *tgroup; 2408 2409 tqpair = SPDK_CONTAINEROF(tcp_req->req.qpair, struct spdk_nvmf_tcp_qpair, qpair); 2410 group = &tqpair->group->group; 2411 assert(tcp_req->state != TCP_REQUEST_STATE_FREE); 2412 2413 /* If the qpair is not active, we need to abort the outstanding requests. */ 2414 if (tqpair->qpair.state != SPDK_NVMF_QPAIR_ACTIVE) { 2415 if (tcp_req->state == TCP_REQUEST_STATE_NEED_BUFFER) { 2416 STAILQ_REMOVE(&group->pending_buf_queue, &tcp_req->req, spdk_nvmf_request, buf_link); 2417 } 2418 nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_COMPLETED); 2419 } 2420 2421 /* The loop here is to allow for several back-to-back state changes. */ 2422 do { 2423 prev_state = tcp_req->state; 2424 2425 SPDK_DEBUGLOG(nvmf_tcp, "Request %p entering state %d on tqpair=%p\n", tcp_req, prev_state, 2426 tqpair); 2427 2428 switch (tcp_req->state) { 2429 case TCP_REQUEST_STATE_FREE: 2430 /* Some external code must kick a request into TCP_REQUEST_STATE_NEW 2431 * to escape this state. */ 2432 break; 2433 case TCP_REQUEST_STATE_NEW: 2434 spdk_trace_record(TRACE_TCP_REQUEST_STATE_NEW, 0, 0, (uintptr_t)tcp_req, 0); 2435 2436 /* copy the cmd from the receive pdu */ 2437 tcp_req->cmd = tqpair->pdu_in_progress.hdr.capsule_cmd.ccsqe; 2438 2439 if (spdk_unlikely(spdk_nvmf_request_get_dif_ctx(&tcp_req->req, &tcp_req->req.dif.dif_ctx))) { 2440 tcp_req->req.dif.dif_insert_or_strip = true; 2441 tqpair->pdu_in_progress.dif_ctx = &tcp_req->req.dif.dif_ctx; 2442 } 2443 2444 /* The next state transition depends on the data transfer needs of this request. */ 2445 tcp_req->req.xfer = spdk_nvmf_req_get_xfer(&tcp_req->req); 2446 2447 if (spdk_unlikely(tcp_req->req.xfer == SPDK_NVME_DATA_BIDIRECTIONAL)) { 2448 tcp_req->req.rsp->nvme_cpl.status.sct = SPDK_NVME_SCT_GENERIC; 2449 tcp_req->req.rsp->nvme_cpl.status.sct = SPDK_NVME_SC_INVALID_OPCODE; 2450 nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_READY_TO_COMPLETE); 2451 SPDK_DEBUGLOG(nvmf_tcp, "Request %p: invalid xfer type (BIDIRECTIONAL)\n", tcp_req); 2452 break; 2453 } 2454 2455 /* If no data to transfer, ready to execute. */ 2456 if (tcp_req->req.xfer == SPDK_NVME_DATA_NONE) { 2457 /* Reset the tqpair receving pdu state */ 2458 nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_READY); 2459 nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_READY_TO_EXECUTE); 2460 break; 2461 } 2462 2463 nvmf_tcp_set_incapsule_data(tqpair, tcp_req); 2464 2465 if (!tcp_req->has_incapsule_data) { 2466 nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_READY); 2467 } 2468 2469 nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_NEED_BUFFER); 2470 STAILQ_INSERT_TAIL(&group->pending_buf_queue, &tcp_req->req, buf_link); 2471 break; 2472 case TCP_REQUEST_STATE_NEED_BUFFER: 2473 spdk_trace_record(TRACE_TCP_REQUEST_STATE_NEED_BUFFER, 0, 0, (uintptr_t)tcp_req, 0); 2474 2475 assert(tcp_req->req.xfer != SPDK_NVME_DATA_NONE); 2476 2477 if (!tcp_req->has_incapsule_data && (&tcp_req->req != STAILQ_FIRST(&group->pending_buf_queue))) { 2478 SPDK_DEBUGLOG(nvmf_tcp, 2479 "Not the first element to wait for the buf for tcp_req(%p) on tqpair=%p\n", 2480 tcp_req, tqpair); 2481 /* This request needs to wait in line to obtain a buffer */ 2482 break; 2483 } 2484 2485 /* Try to get a data buffer */ 2486 rc = nvmf_tcp_req_parse_sgl(tcp_req, transport, group); 2487 if (rc < 0) { 2488 STAILQ_REMOVE_HEAD(&group->pending_buf_queue, buf_link); 2489 /* Reset the tqpair receving pdu state */ 2490 nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_ERROR); 2491 nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_READY_TO_COMPLETE); 2492 break; 2493 } 2494 2495 if (!tcp_req->req.data) { 2496 SPDK_DEBUGLOG(nvmf_tcp, "No buffer allocated for tcp_req(%p) on tqpair(%p\n)", 2497 tcp_req, tqpair); 2498 /* No buffers available. */ 2499 break; 2500 } 2501 2502 STAILQ_REMOVE(&group->pending_buf_queue, &tcp_req->req, spdk_nvmf_request, buf_link); 2503 2504 /* If data is transferring from host to controller, we need to do a transfer from the host. */ 2505 if (tcp_req->req.xfer == SPDK_NVME_DATA_HOST_TO_CONTROLLER) { 2506 if (tcp_req->req.data_from_pool) { 2507 SPDK_DEBUGLOG(nvmf_tcp, "Sending R2T for tcp_req(%p) on tqpair=%p\n", tcp_req, tqpair); 2508 nvmf_tcp_send_r2t_pdu(tqpair, tcp_req); 2509 } else { 2510 struct nvme_tcp_pdu *pdu; 2511 2512 nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_TRANSFERRING_HOST_TO_CONTROLLER); 2513 2514 pdu = &tqpair->pdu_in_progress; 2515 SPDK_DEBUGLOG(nvmf_tcp, "Not need to send r2t for tcp_req(%p) on tqpair=%p\n", tcp_req, 2516 tqpair); 2517 /* No need to send r2t, contained in the capsuled data */ 2518 nvme_tcp_pdu_set_data_buf(pdu, tcp_req->req.iov, tcp_req->req.iovcnt, 2519 0, tcp_req->req.length); 2520 nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_PAYLOAD); 2521 } 2522 break; 2523 } 2524 2525 nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_READY_TO_EXECUTE); 2526 break; 2527 case TCP_REQUEST_STATE_AWAITING_R2T_ACK: 2528 spdk_trace_record(TRACE_TCP_REQUEST_STATE_AWAIT_R2T_ACK, 0, 0, (uintptr_t)tcp_req, 0); 2529 /* The R2T completion or the h2c data incoming will kick it out of this state. */ 2530 break; 2531 case TCP_REQUEST_STATE_TRANSFERRING_HOST_TO_CONTROLLER: 2532 2533 spdk_trace_record(TRACE_TCP_REQUEST_STATE_TRANSFERRING_HOST_TO_CONTROLLER, 0, 0, 2534 (uintptr_t)tcp_req, 0); 2535 /* Some external code must kick a request into TCP_REQUEST_STATE_READY_TO_EXECUTE 2536 * to escape this state. */ 2537 break; 2538 case TCP_REQUEST_STATE_READY_TO_EXECUTE: 2539 spdk_trace_record(TRACE_TCP_REQUEST_STATE_READY_TO_EXECUTE, 0, 0, (uintptr_t)tcp_req, 0); 2540 2541 if (spdk_unlikely(tcp_req->req.dif.dif_insert_or_strip)) { 2542 assert(tcp_req->req.dif.elba_length >= tcp_req->req.length); 2543 tcp_req->req.length = tcp_req->req.dif.elba_length; 2544 } 2545 2546 nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_EXECUTING); 2547 spdk_nvmf_request_exec(&tcp_req->req); 2548 break; 2549 case TCP_REQUEST_STATE_EXECUTING: 2550 spdk_trace_record(TRACE_TCP_REQUEST_STATE_EXECUTING, 0, 0, (uintptr_t)tcp_req, 0); 2551 /* Some external code must kick a request into TCP_REQUEST_STATE_EXECUTED 2552 * to escape this state. */ 2553 break; 2554 case TCP_REQUEST_STATE_EXECUTED: 2555 spdk_trace_record(TRACE_TCP_REQUEST_STATE_EXECUTED, 0, 0, (uintptr_t)tcp_req, 0); 2556 2557 if (spdk_unlikely(tcp_req->req.dif.dif_insert_or_strip)) { 2558 tcp_req->req.length = tcp_req->req.dif.orig_length; 2559 } 2560 2561 nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_READY_TO_COMPLETE); 2562 break; 2563 case TCP_REQUEST_STATE_READY_TO_COMPLETE: 2564 spdk_trace_record(TRACE_TCP_REQUEST_STATE_READY_TO_COMPLETE, 0, 0, (uintptr_t)tcp_req, 0); 2565 rc = request_transfer_out(&tcp_req->req); 2566 assert(rc == 0); /* No good way to handle this currently */ 2567 break; 2568 case TCP_REQUEST_STATE_TRANSFERRING_CONTROLLER_TO_HOST: 2569 spdk_trace_record(TRACE_TCP_REQUEST_STATE_TRANSFERRING_CONTROLLER_TO_HOST, 0, 0, 2570 (uintptr_t)tcp_req, 2571 0); 2572 /* Some external code must kick a request into TCP_REQUEST_STATE_COMPLETED 2573 * to escape this state. */ 2574 break; 2575 case TCP_REQUEST_STATE_COMPLETED: 2576 spdk_trace_record(TRACE_TCP_REQUEST_STATE_COMPLETED, 0, 0, (uintptr_t)tcp_req, 0); 2577 if (tcp_req->req.data_from_pool) { 2578 spdk_nvmf_request_free_buffers(&tcp_req->req, group, transport); 2579 } else if (spdk_unlikely(tcp_req->has_incapsule_data && (tcp_req->cmd.opc == SPDK_NVME_OPC_FABRIC || 2580 tqpair->qpair.qid == 0) && tcp_req->req.length > transport->opts.in_capsule_data_size)) { 2581 tgroup = SPDK_CONTAINEROF(group, struct spdk_nvmf_tcp_poll_group, group); 2582 assert(tgroup->control_msg_list); 2583 SPDK_DEBUGLOG(nvmf_tcp, "Put buf to control msg list\n"); 2584 nvmf_tcp_control_msg_put(tgroup->control_msg_list, tcp_req->req.data); 2585 } 2586 tcp_req->req.length = 0; 2587 tcp_req->req.iovcnt = 0; 2588 tcp_req->req.data = NULL; 2589 2590 nvmf_tcp_req_pdu_fini(tcp_req); 2591 2592 nvmf_tcp_req_put(tqpair, tcp_req); 2593 break; 2594 case TCP_REQUEST_NUM_STATES: 2595 default: 2596 assert(0); 2597 break; 2598 } 2599 2600 if (tcp_req->state != prev_state) { 2601 progress = true; 2602 } 2603 } while (tcp_req->state != prev_state); 2604 2605 return progress; 2606 } 2607 2608 static void 2609 nvmf_tcp_sock_cb(void *arg, struct spdk_sock_group *group, struct spdk_sock *sock) 2610 { 2611 struct spdk_nvmf_tcp_qpair *tqpair = arg; 2612 int rc; 2613 2614 assert(tqpair != NULL); 2615 rc = nvmf_tcp_sock_process(tqpair); 2616 2617 /* If there was a new socket error, disconnect */ 2618 if (rc < 0) { 2619 nvmf_tcp_qpair_disconnect(tqpair); 2620 } 2621 } 2622 2623 static int 2624 nvmf_tcp_poll_group_add(struct spdk_nvmf_transport_poll_group *group, 2625 struct spdk_nvmf_qpair *qpair) 2626 { 2627 struct spdk_nvmf_tcp_poll_group *tgroup; 2628 struct spdk_nvmf_tcp_qpair *tqpair; 2629 int rc; 2630 2631 tgroup = SPDK_CONTAINEROF(group, struct spdk_nvmf_tcp_poll_group, group); 2632 tqpair = SPDK_CONTAINEROF(qpair, struct spdk_nvmf_tcp_qpair, qpair); 2633 2634 rc = spdk_sock_group_add_sock(tgroup->sock_group, tqpair->sock, 2635 nvmf_tcp_sock_cb, tqpair); 2636 if (rc != 0) { 2637 SPDK_ERRLOG("Could not add sock to sock_group: %s (%d)\n", 2638 spdk_strerror(errno), errno); 2639 return -1; 2640 } 2641 2642 rc = nvmf_tcp_qpair_sock_init(tqpair); 2643 if (rc != 0) { 2644 SPDK_ERRLOG("Cannot set sock opt for tqpair=%p\n", tqpair); 2645 return -1; 2646 } 2647 2648 rc = nvmf_tcp_qpair_init(&tqpair->qpair); 2649 if (rc < 0) { 2650 SPDK_ERRLOG("Cannot init tqpair=%p\n", tqpair); 2651 return -1; 2652 } 2653 2654 rc = nvmf_tcp_qpair_init_mem_resource(tqpair); 2655 if (rc < 0) { 2656 SPDK_ERRLOG("Cannot init memory resource info for tqpair=%p\n", tqpair); 2657 return -1; 2658 } 2659 2660 tqpair->group = tgroup; 2661 tqpair->state = NVME_TCP_QPAIR_STATE_INVALID; 2662 TAILQ_INSERT_TAIL(&tgroup->qpairs, tqpair, link); 2663 2664 return 0; 2665 } 2666 2667 static int 2668 nvmf_tcp_poll_group_remove(struct spdk_nvmf_transport_poll_group *group, 2669 struct spdk_nvmf_qpair *qpair) 2670 { 2671 struct spdk_nvmf_tcp_poll_group *tgroup; 2672 struct spdk_nvmf_tcp_qpair *tqpair; 2673 int rc; 2674 2675 tgroup = SPDK_CONTAINEROF(group, struct spdk_nvmf_tcp_poll_group, group); 2676 tqpair = SPDK_CONTAINEROF(qpair, struct spdk_nvmf_tcp_qpair, qpair); 2677 2678 assert(tqpair->group == tgroup); 2679 2680 SPDK_DEBUGLOG(nvmf_tcp, "remove tqpair=%p from the tgroup=%p\n", tqpair, tgroup); 2681 if (tqpair->recv_state == NVME_TCP_PDU_RECV_STATE_AWAIT_REQ) { 2682 TAILQ_REMOVE(&tgroup->await_req, tqpair, link); 2683 } else { 2684 TAILQ_REMOVE(&tgroup->qpairs, tqpair, link); 2685 } 2686 2687 rc = spdk_sock_group_remove_sock(tgroup->sock_group, tqpair->sock); 2688 if (rc != 0) { 2689 SPDK_ERRLOG("Could not remove sock from sock_group: %s (%d)\n", 2690 spdk_strerror(errno), errno); 2691 } 2692 2693 return rc; 2694 } 2695 2696 static int 2697 nvmf_tcp_req_complete(struct spdk_nvmf_request *req) 2698 { 2699 struct spdk_nvmf_tcp_transport *ttransport; 2700 struct spdk_nvmf_tcp_req *tcp_req; 2701 2702 ttransport = SPDK_CONTAINEROF(req->qpair->transport, struct spdk_nvmf_tcp_transport, transport); 2703 tcp_req = SPDK_CONTAINEROF(req, struct spdk_nvmf_tcp_req, req); 2704 2705 nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_EXECUTED); 2706 nvmf_tcp_req_process(ttransport, tcp_req); 2707 2708 return 0; 2709 } 2710 2711 static void 2712 nvmf_tcp_close_qpair(struct spdk_nvmf_qpair *qpair, 2713 spdk_nvmf_transport_qpair_fini_cb cb_fn, void *cb_arg) 2714 { 2715 struct spdk_nvmf_tcp_qpair *tqpair; 2716 2717 SPDK_DEBUGLOG(nvmf_tcp, "Qpair: %p\n", qpair); 2718 2719 tqpair = SPDK_CONTAINEROF(qpair, struct spdk_nvmf_tcp_qpair, qpair); 2720 tqpair->state = NVME_TCP_QPAIR_STATE_EXITED; 2721 nvmf_tcp_qpair_destroy(tqpair); 2722 2723 if (cb_fn) { 2724 cb_fn(cb_arg); 2725 } 2726 } 2727 2728 static int 2729 nvmf_tcp_poll_group_poll(struct spdk_nvmf_transport_poll_group *group) 2730 { 2731 struct spdk_nvmf_tcp_poll_group *tgroup; 2732 int rc; 2733 struct spdk_nvmf_request *req, *req_tmp; 2734 struct spdk_nvmf_tcp_req *tcp_req; 2735 struct spdk_nvmf_tcp_qpair *tqpair, *tqpair_tmp; 2736 struct spdk_nvmf_tcp_transport *ttransport = SPDK_CONTAINEROF(group->transport, 2737 struct spdk_nvmf_tcp_transport, transport); 2738 2739 tgroup = SPDK_CONTAINEROF(group, struct spdk_nvmf_tcp_poll_group, group); 2740 2741 if (spdk_unlikely(TAILQ_EMPTY(&tgroup->qpairs) && TAILQ_EMPTY(&tgroup->await_req))) { 2742 return 0; 2743 } 2744 2745 STAILQ_FOREACH_SAFE(req, &group->pending_buf_queue, buf_link, req_tmp) { 2746 tcp_req = SPDK_CONTAINEROF(req, struct spdk_nvmf_tcp_req, req); 2747 if (nvmf_tcp_req_process(ttransport, tcp_req) == false) { 2748 break; 2749 } 2750 } 2751 2752 rc = spdk_sock_group_poll(tgroup->sock_group); 2753 if (rc < 0) { 2754 SPDK_ERRLOG("Failed to poll sock_group=%p\n", tgroup->sock_group); 2755 } 2756 2757 TAILQ_FOREACH_SAFE(tqpair, &tgroup->await_req, link, tqpair_tmp) { 2758 nvmf_tcp_sock_process(tqpair); 2759 } 2760 2761 return rc; 2762 } 2763 2764 static int 2765 nvmf_tcp_qpair_get_trid(struct spdk_nvmf_qpair *qpair, 2766 struct spdk_nvme_transport_id *trid, bool peer) 2767 { 2768 struct spdk_nvmf_tcp_qpair *tqpair; 2769 uint16_t port; 2770 2771 tqpair = SPDK_CONTAINEROF(qpair, struct spdk_nvmf_tcp_qpair, qpair); 2772 spdk_nvme_trid_populate_transport(trid, SPDK_NVME_TRANSPORT_TCP); 2773 2774 if (peer) { 2775 snprintf(trid->traddr, sizeof(trid->traddr), "%s", tqpair->initiator_addr); 2776 port = tqpair->initiator_port; 2777 } else { 2778 snprintf(trid->traddr, sizeof(trid->traddr), "%s", tqpair->target_addr); 2779 port = tqpair->target_port; 2780 } 2781 2782 if (spdk_sock_is_ipv4(tqpair->sock)) { 2783 trid->adrfam = SPDK_NVMF_ADRFAM_IPV4; 2784 } else if (spdk_sock_is_ipv6(tqpair->sock)) { 2785 trid->adrfam = SPDK_NVMF_ADRFAM_IPV6; 2786 } else { 2787 return -1; 2788 } 2789 2790 snprintf(trid->trsvcid, sizeof(trid->trsvcid), "%d", port); 2791 return 0; 2792 } 2793 2794 static int 2795 nvmf_tcp_qpair_get_local_trid(struct spdk_nvmf_qpair *qpair, 2796 struct spdk_nvme_transport_id *trid) 2797 { 2798 return nvmf_tcp_qpair_get_trid(qpair, trid, 0); 2799 } 2800 2801 static int 2802 nvmf_tcp_qpair_get_peer_trid(struct spdk_nvmf_qpair *qpair, 2803 struct spdk_nvme_transport_id *trid) 2804 { 2805 return nvmf_tcp_qpair_get_trid(qpair, trid, 1); 2806 } 2807 2808 static int 2809 nvmf_tcp_qpair_get_listen_trid(struct spdk_nvmf_qpair *qpair, 2810 struct spdk_nvme_transport_id *trid) 2811 { 2812 return nvmf_tcp_qpair_get_trid(qpair, trid, 0); 2813 } 2814 2815 static void 2816 nvmf_tcp_req_set_abort_status(struct spdk_nvmf_request *req, 2817 struct spdk_nvmf_tcp_req *tcp_req_to_abort) 2818 { 2819 tcp_req_to_abort->req.rsp->nvme_cpl.status.sct = SPDK_NVME_SCT_GENERIC; 2820 tcp_req_to_abort->req.rsp->nvme_cpl.status.sc = SPDK_NVME_SC_ABORTED_BY_REQUEST; 2821 2822 nvmf_tcp_req_set_state(tcp_req_to_abort, TCP_REQUEST_STATE_READY_TO_COMPLETE); 2823 2824 req->rsp->nvme_cpl.cdw0 &= ~1U; /* Command was successfully aborted. */ 2825 } 2826 2827 static int 2828 _nvmf_tcp_qpair_abort_request(void *ctx) 2829 { 2830 struct spdk_nvmf_request *req = ctx; 2831 struct spdk_nvmf_tcp_req *tcp_req_to_abort = SPDK_CONTAINEROF(req->req_to_abort, 2832 struct spdk_nvmf_tcp_req, req); 2833 struct spdk_nvmf_tcp_qpair *tqpair = SPDK_CONTAINEROF(req->req_to_abort->qpair, 2834 struct spdk_nvmf_tcp_qpair, qpair); 2835 int rc; 2836 2837 spdk_poller_unregister(&req->poller); 2838 2839 switch (tcp_req_to_abort->state) { 2840 case TCP_REQUEST_STATE_EXECUTING: 2841 rc = nvmf_ctrlr_abort_request(req); 2842 if (rc == SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS) { 2843 return SPDK_POLLER_BUSY; 2844 } 2845 break; 2846 2847 case TCP_REQUEST_STATE_NEED_BUFFER: 2848 STAILQ_REMOVE(&tqpair->group->group.pending_buf_queue, 2849 &tcp_req_to_abort->req, spdk_nvmf_request, buf_link); 2850 2851 nvmf_tcp_req_set_abort_status(req, tcp_req_to_abort); 2852 break; 2853 2854 case TCP_REQUEST_STATE_AWAITING_R2T_ACK: 2855 nvmf_tcp_req_set_abort_status(req, tcp_req_to_abort); 2856 break; 2857 2858 case TCP_REQUEST_STATE_TRANSFERRING_HOST_TO_CONTROLLER: 2859 if (spdk_get_ticks() < req->timeout_tsc) { 2860 req->poller = SPDK_POLLER_REGISTER(_nvmf_tcp_qpair_abort_request, req, 0); 2861 return SPDK_POLLER_BUSY; 2862 } 2863 break; 2864 2865 default: 2866 break; 2867 } 2868 2869 spdk_nvmf_request_complete(req); 2870 return SPDK_POLLER_BUSY; 2871 } 2872 2873 static void 2874 nvmf_tcp_qpair_abort_request(struct spdk_nvmf_qpair *qpair, 2875 struct spdk_nvmf_request *req) 2876 { 2877 struct spdk_nvmf_tcp_qpair *tqpair; 2878 struct spdk_nvmf_tcp_transport *ttransport; 2879 struct spdk_nvmf_transport *transport; 2880 uint16_t cid; 2881 uint32_t i; 2882 struct spdk_nvmf_tcp_req *tcp_req_to_abort = NULL; 2883 2884 tqpair = SPDK_CONTAINEROF(qpair, struct spdk_nvmf_tcp_qpair, qpair); 2885 ttransport = SPDK_CONTAINEROF(qpair->transport, struct spdk_nvmf_tcp_transport, transport); 2886 transport = &ttransport->transport; 2887 2888 cid = req->cmd->nvme_cmd.cdw10_bits.abort.cid; 2889 2890 for (i = 0; i < tqpair->resource_count; i++) { 2891 if (tqpair->reqs[i].state != TCP_REQUEST_STATE_FREE && 2892 tqpair->reqs[i].req.cmd->nvme_cmd.cid == cid) { 2893 tcp_req_to_abort = &tqpair->reqs[i]; 2894 break; 2895 } 2896 } 2897 2898 if (tcp_req_to_abort == NULL) { 2899 spdk_nvmf_request_complete(req); 2900 return; 2901 } 2902 2903 req->req_to_abort = &tcp_req_to_abort->req; 2904 req->timeout_tsc = spdk_get_ticks() + 2905 transport->opts.abort_timeout_sec * spdk_get_ticks_hz(); 2906 req->poller = NULL; 2907 2908 _nvmf_tcp_qpair_abort_request(req); 2909 } 2910 2911 #define SPDK_NVMF_TCP_DEFAULT_MAX_QUEUE_DEPTH 128 2912 #define SPDK_NVMF_TCP_DEFAULT_AQ_DEPTH 128 2913 #define SPDK_NVMF_TCP_DEFAULT_MAX_QPAIRS_PER_CTRLR 128 2914 #define SPDK_NVMF_TCP_DEFAULT_IN_CAPSULE_DATA_SIZE 4096 2915 #define SPDK_NVMF_TCP_DEFAULT_MAX_IO_SIZE 131072 2916 #define SPDK_NVMF_TCP_DEFAULT_IO_UNIT_SIZE 131072 2917 #define SPDK_NVMF_TCP_DEFAULT_NUM_SHARED_BUFFERS 511 2918 #define SPDK_NVMF_TCP_DEFAULT_BUFFER_CACHE_SIZE 32 2919 #define SPDK_NVMF_TCP_DEFAULT_DIF_INSERT_OR_STRIP false 2920 #define SPDK_NVMF_TCP_DEFAULT_ABORT_TIMEOUT_SEC 1 2921 2922 static void 2923 nvmf_tcp_opts_init(struct spdk_nvmf_transport_opts *opts) 2924 { 2925 opts->max_queue_depth = SPDK_NVMF_TCP_DEFAULT_MAX_QUEUE_DEPTH; 2926 opts->max_qpairs_per_ctrlr = SPDK_NVMF_TCP_DEFAULT_MAX_QPAIRS_PER_CTRLR; 2927 opts->in_capsule_data_size = SPDK_NVMF_TCP_DEFAULT_IN_CAPSULE_DATA_SIZE; 2928 opts->max_io_size = SPDK_NVMF_TCP_DEFAULT_MAX_IO_SIZE; 2929 opts->io_unit_size = SPDK_NVMF_TCP_DEFAULT_IO_UNIT_SIZE; 2930 opts->max_aq_depth = SPDK_NVMF_TCP_DEFAULT_AQ_DEPTH; 2931 opts->num_shared_buffers = SPDK_NVMF_TCP_DEFAULT_NUM_SHARED_BUFFERS; 2932 opts->buf_cache_size = SPDK_NVMF_TCP_DEFAULT_BUFFER_CACHE_SIZE; 2933 opts->dif_insert_or_strip = SPDK_NVMF_TCP_DEFAULT_DIF_INSERT_OR_STRIP; 2934 opts->abort_timeout_sec = SPDK_NVMF_TCP_DEFAULT_ABORT_TIMEOUT_SEC; 2935 opts->transport_specific = NULL; 2936 } 2937 2938 const struct spdk_nvmf_transport_ops spdk_nvmf_transport_tcp = { 2939 .name = "TCP", 2940 .type = SPDK_NVME_TRANSPORT_TCP, 2941 .opts_init = nvmf_tcp_opts_init, 2942 .create = nvmf_tcp_create, 2943 .dump_opts = nvmf_tcp_dump_opts, 2944 .destroy = nvmf_tcp_destroy, 2945 2946 .listen = nvmf_tcp_listen, 2947 .stop_listen = nvmf_tcp_stop_listen, 2948 .accept = nvmf_tcp_accept, 2949 2950 .listener_discover = nvmf_tcp_discover, 2951 2952 .poll_group_create = nvmf_tcp_poll_group_create, 2953 .get_optimal_poll_group = nvmf_tcp_get_optimal_poll_group, 2954 .poll_group_destroy = nvmf_tcp_poll_group_destroy, 2955 .poll_group_add = nvmf_tcp_poll_group_add, 2956 .poll_group_remove = nvmf_tcp_poll_group_remove, 2957 .poll_group_poll = nvmf_tcp_poll_group_poll, 2958 2959 .req_free = nvmf_tcp_req_free, 2960 .req_complete = nvmf_tcp_req_complete, 2961 2962 .qpair_fini = nvmf_tcp_close_qpair, 2963 .qpair_get_local_trid = nvmf_tcp_qpair_get_local_trid, 2964 .qpair_get_peer_trid = nvmf_tcp_qpair_get_peer_trid, 2965 .qpair_get_listen_trid = nvmf_tcp_qpair_get_listen_trid, 2966 .qpair_abort_request = nvmf_tcp_qpair_abort_request, 2967 }; 2968 2969 SPDK_NVMF_TRANSPORT_REGISTER(tcp, &spdk_nvmf_transport_tcp); 2970 SPDK_LOG_REGISTER_COMPONENT(nvmf_tcp) 2971