Line data Source code
1 : /* SPDX-License-Identifier: BSD-3-Clause
2 : * Copyright (C) 2018 Intel Corporation. All rights reserved.
3 : * Copyright (c) 2019, 2020 Mellanox Technologies LTD. All rights reserved.
4 : * Copyright (c) 2022-2024 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
5 : */
6 :
7 : #include "spdk/accel.h"
8 : #include "spdk/stdinc.h"
9 : #include "spdk/crc32.h"
10 : #include "spdk/endian.h"
11 : #include "spdk/assert.h"
12 : #include "spdk/thread.h"
13 : #include "spdk/nvmf_transport.h"
14 : #include "spdk/string.h"
15 : #include "spdk/trace.h"
16 : #include "spdk/util.h"
17 : #include "spdk/log.h"
18 : #include "spdk/keyring.h"
19 :
20 : #include "spdk_internal/assert.h"
21 : #include "spdk_internal/nvme_tcp.h"
22 : #include "spdk_internal/sock.h"
23 :
24 : #include "nvmf_internal.h"
25 : #include "transport.h"
26 :
27 : #include "spdk_internal/trace_defs.h"
28 :
29 : #define NVMF_TCP_MAX_ACCEPT_SOCK_ONE_TIME 16
30 : #define SPDK_NVMF_TCP_DEFAULT_MAX_SOCK_PRIORITY 16
31 : #define SPDK_NVMF_TCP_DEFAULT_SOCK_PRIORITY 0
32 : #define SPDK_NVMF_TCP_DEFAULT_CONTROL_MSG_NUM 32
33 : #define SPDK_NVMF_TCP_DEFAULT_SUCCESS_OPTIMIZATION true
34 :
35 : #define SPDK_NVMF_TCP_MIN_IO_QUEUE_DEPTH 2
36 : #define SPDK_NVMF_TCP_MAX_IO_QUEUE_DEPTH 65535
37 : #define SPDK_NVMF_TCP_MIN_ADMIN_QUEUE_DEPTH 2
38 : #define SPDK_NVMF_TCP_MAX_ADMIN_QUEUE_DEPTH 4096
39 :
40 : #define SPDK_NVMF_TCP_DEFAULT_MAX_IO_QUEUE_DEPTH 128
41 : #define SPDK_NVMF_TCP_DEFAULT_MAX_ADMIN_QUEUE_DEPTH 128
42 : #define SPDK_NVMF_TCP_DEFAULT_MAX_QPAIRS_PER_CTRLR 128
43 : #define SPDK_NVMF_TCP_DEFAULT_IN_CAPSULE_DATA_SIZE 4096
44 : #define SPDK_NVMF_TCP_DEFAULT_MAX_IO_SIZE 131072
45 : #define SPDK_NVMF_TCP_DEFAULT_IO_UNIT_SIZE 131072
46 : #define SPDK_NVMF_TCP_DEFAULT_NUM_SHARED_BUFFERS 511
47 : #define SPDK_NVMF_TCP_DEFAULT_BUFFER_CACHE_SIZE UINT32_MAX
48 : #define SPDK_NVMF_TCP_DEFAULT_DIF_INSERT_OR_STRIP false
49 : #define SPDK_NVMF_TCP_DEFAULT_ABORT_TIMEOUT_SEC 1
50 :
51 : const struct spdk_nvmf_transport_ops spdk_nvmf_transport_tcp;
52 : static bool g_tls_log = false;
53 :
54 : /* spdk nvmf related structure */
55 : enum spdk_nvmf_tcp_req_state {
56 :
57 : /* The request is not currently in use */
58 : TCP_REQUEST_STATE_FREE = 0,
59 :
60 : /* Initial state when request first received */
61 : TCP_REQUEST_STATE_NEW = 1,
62 :
63 : /* The request is queued until a data buffer is available. */
64 : TCP_REQUEST_STATE_NEED_BUFFER = 2,
65 :
66 : /* The request has the data buffer available */
67 : TCP_REQUEST_STATE_HAVE_BUFFER = 3,
68 :
69 : /* The request is waiting for zcopy_start to finish */
70 : TCP_REQUEST_STATE_AWAITING_ZCOPY_START = 4,
71 :
72 : /* The request has received a zero-copy buffer */
73 : TCP_REQUEST_STATE_ZCOPY_START_COMPLETED = 5,
74 :
75 : /* The request is currently transferring data from the host to the controller. */
76 : TCP_REQUEST_STATE_TRANSFERRING_HOST_TO_CONTROLLER = 6,
77 :
78 : /* The request is waiting for the R2T send acknowledgement. */
79 : TCP_REQUEST_STATE_AWAITING_R2T_ACK = 7,
80 :
81 : /* The request is ready to execute at the block device */
82 : TCP_REQUEST_STATE_READY_TO_EXECUTE = 8,
83 :
84 : /* The request is currently executing at the block device */
85 : TCP_REQUEST_STATE_EXECUTING = 9,
86 :
87 : /* The request is waiting for zcopy buffers to be committed */
88 : TCP_REQUEST_STATE_AWAITING_ZCOPY_COMMIT = 10,
89 :
90 : /* The request finished executing at the block device */
91 : TCP_REQUEST_STATE_EXECUTED = 11,
92 :
93 : /* The request is ready to send a completion */
94 : TCP_REQUEST_STATE_READY_TO_COMPLETE = 12,
95 :
96 : /* The request is currently transferring final pdus from the controller to the host. */
97 : TCP_REQUEST_STATE_TRANSFERRING_CONTROLLER_TO_HOST = 13,
98 :
99 : /* The request is waiting for zcopy buffers to be released (without committing) */
100 : TCP_REQUEST_STATE_AWAITING_ZCOPY_RELEASE = 14,
101 :
102 : /* The request completed and can be marked free. */
103 : TCP_REQUEST_STATE_COMPLETED = 15,
104 :
105 : /* Terminator */
106 : TCP_REQUEST_NUM_STATES,
107 : };
108 :
109 : enum nvmf_tcp_qpair_state {
110 : NVMF_TCP_QPAIR_STATE_INVALID = 0,
111 : NVMF_TCP_QPAIR_STATE_INITIALIZING = 1,
112 : NVMF_TCP_QPAIR_STATE_RUNNING = 2,
113 : NVMF_TCP_QPAIR_STATE_EXITING = 3,
114 : NVMF_TCP_QPAIR_STATE_EXITED = 4,
115 : };
116 :
117 : static const char *spdk_nvmf_tcp_term_req_fes_str[] = {
118 : "Invalid PDU Header Field",
119 : "PDU Sequence Error",
120 : "Header Digiest Error",
121 : "Data Transfer Out of Range",
122 : "R2T Limit Exceeded",
123 : "Unsupported parameter",
124 : };
125 :
126 : static void
127 0 : nvmf_tcp_trace(void)
128 : {
129 0 : spdk_trace_register_owner_type(OWNER_TYPE_NVMF_TCP, 't');
130 0 : spdk_trace_register_object(OBJECT_NVMF_TCP_IO, 'r');
131 0 : spdk_trace_register_description("TCP_REQ_NEW",
132 : TRACE_TCP_REQUEST_STATE_NEW,
133 : OWNER_TYPE_NVMF_TCP, OBJECT_NVMF_TCP_IO, 1,
134 : SPDK_TRACE_ARG_TYPE_INT, "qd");
135 0 : spdk_trace_register_description("TCP_REQ_NEED_BUFFER",
136 : TRACE_TCP_REQUEST_STATE_NEED_BUFFER,
137 : OWNER_TYPE_NVMF_TCP, OBJECT_NVMF_TCP_IO, 0,
138 : SPDK_TRACE_ARG_TYPE_INT, "");
139 0 : spdk_trace_register_description("TCP_REQ_HAVE_BUFFER",
140 : TRACE_TCP_REQUEST_STATE_HAVE_BUFFER,
141 : OWNER_TYPE_NVMF_TCP, OBJECT_NVMF_TCP_IO, 0,
142 : SPDK_TRACE_ARG_TYPE_INT, "");
143 0 : spdk_trace_register_description("TCP_REQ_WAIT_ZCPY_START",
144 : TRACE_TCP_REQUEST_STATE_AWAIT_ZCOPY_START,
145 : OWNER_TYPE_NVMF_TCP, OBJECT_NVMF_TCP_IO, 0,
146 : SPDK_TRACE_ARG_TYPE_INT, "");
147 0 : spdk_trace_register_description("TCP_REQ_ZCPY_START_CPL",
148 : TRACE_TCP_REQUEST_STATE_ZCOPY_START_COMPLETED,
149 : OWNER_TYPE_NVMF_TCP, OBJECT_NVMF_TCP_IO, 0,
150 : SPDK_TRACE_ARG_TYPE_INT, "");
151 0 : spdk_trace_register_description("TCP_REQ_TX_H_TO_C",
152 : TRACE_TCP_REQUEST_STATE_TRANSFERRING_HOST_TO_CONTROLLER,
153 : OWNER_TYPE_NVMF_TCP, OBJECT_NVMF_TCP_IO, 0,
154 : SPDK_TRACE_ARG_TYPE_INT, "");
155 0 : spdk_trace_register_description("TCP_REQ_RDY_TO_EXECUTE",
156 : TRACE_TCP_REQUEST_STATE_READY_TO_EXECUTE,
157 : OWNER_TYPE_NVMF_TCP, OBJECT_NVMF_TCP_IO, 0,
158 : SPDK_TRACE_ARG_TYPE_INT, "");
159 0 : spdk_trace_register_description("TCP_REQ_EXECUTING",
160 : TRACE_TCP_REQUEST_STATE_EXECUTING,
161 : OWNER_TYPE_NVMF_TCP, OBJECT_NVMF_TCP_IO, 0,
162 : SPDK_TRACE_ARG_TYPE_INT, "");
163 0 : spdk_trace_register_description("TCP_REQ_WAIT_ZCPY_CMT",
164 : TRACE_TCP_REQUEST_STATE_AWAIT_ZCOPY_COMMIT,
165 : OWNER_TYPE_NVMF_TCP, OBJECT_NVMF_TCP_IO, 0,
166 : SPDK_TRACE_ARG_TYPE_INT, "");
167 0 : spdk_trace_register_description("TCP_REQ_EXECUTED",
168 : TRACE_TCP_REQUEST_STATE_EXECUTED,
169 : OWNER_TYPE_NVMF_TCP, OBJECT_NVMF_TCP_IO, 0,
170 : SPDK_TRACE_ARG_TYPE_INT, "");
171 0 : spdk_trace_register_description("TCP_REQ_RDY_TO_COMPLETE",
172 : TRACE_TCP_REQUEST_STATE_READY_TO_COMPLETE,
173 : OWNER_TYPE_NVMF_TCP, OBJECT_NVMF_TCP_IO, 0,
174 : SPDK_TRACE_ARG_TYPE_INT, "");
175 0 : spdk_trace_register_description("TCP_REQ_TRANSFER_C2H",
176 : TRACE_TCP_REQUEST_STATE_TRANSFERRING_CONTROLLER_TO_HOST,
177 : OWNER_TYPE_NVMF_TCP, OBJECT_NVMF_TCP_IO, 0,
178 : SPDK_TRACE_ARG_TYPE_INT, "");
179 0 : spdk_trace_register_description("TCP_REQ_AWAIT_ZCPY_RLS",
180 : TRACE_TCP_REQUEST_STATE_AWAIT_ZCOPY_RELEASE,
181 : OWNER_TYPE_NVMF_TCP, OBJECT_NVMF_TCP_IO, 0,
182 : SPDK_TRACE_ARG_TYPE_INT, "");
183 0 : spdk_trace_register_description("TCP_REQ_COMPLETED",
184 : TRACE_TCP_REQUEST_STATE_COMPLETED,
185 : OWNER_TYPE_NVMF_TCP, OBJECT_NVMF_TCP_IO, 0,
186 : SPDK_TRACE_ARG_TYPE_INT, "qd");
187 0 : spdk_trace_register_description("TCP_READ_DONE",
188 : TRACE_TCP_READ_FROM_SOCKET_DONE,
189 : OWNER_TYPE_NVMF_TCP, OBJECT_NONE, 0,
190 : SPDK_TRACE_ARG_TYPE_INT, "");
191 0 : spdk_trace_register_description("TCP_REQ_AWAIT_R2T_ACK",
192 : TRACE_TCP_REQUEST_STATE_AWAIT_R2T_ACK,
193 : OWNER_TYPE_NVMF_TCP, OBJECT_NVMF_TCP_IO, 0,
194 : SPDK_TRACE_ARG_TYPE_INT, "");
195 :
196 0 : spdk_trace_register_description("TCP_QP_CREATE", TRACE_TCP_QP_CREATE,
197 : OWNER_TYPE_NVMF_TCP, OBJECT_NONE, 0,
198 : SPDK_TRACE_ARG_TYPE_INT, "");
199 0 : spdk_trace_register_description("TCP_QP_SOCK_INIT", TRACE_TCP_QP_SOCK_INIT,
200 : OWNER_TYPE_NVMF_TCP, OBJECT_NONE, 0,
201 : SPDK_TRACE_ARG_TYPE_INT, "");
202 0 : spdk_trace_register_description("TCP_QP_STATE_CHANGE", TRACE_TCP_QP_STATE_CHANGE,
203 : OWNER_TYPE_NVMF_TCP, OBJECT_NONE, 0,
204 : SPDK_TRACE_ARG_TYPE_INT, "state");
205 0 : spdk_trace_register_description("TCP_QP_DISCONNECT", TRACE_TCP_QP_DISCONNECT,
206 : OWNER_TYPE_NVMF_TCP, OBJECT_NONE, 0,
207 : SPDK_TRACE_ARG_TYPE_INT, "");
208 0 : spdk_trace_register_description("TCP_QP_DESTROY", TRACE_TCP_QP_DESTROY,
209 : OWNER_TYPE_NVMF_TCP, OBJECT_NONE, 0,
210 : SPDK_TRACE_ARG_TYPE_INT, "");
211 0 : spdk_trace_register_description("TCP_QP_ABORT_REQ", TRACE_TCP_QP_ABORT_REQ,
212 : OWNER_TYPE_NVMF_TCP, OBJECT_NONE, 0,
213 : SPDK_TRACE_ARG_TYPE_INT, "");
214 0 : spdk_trace_register_description("TCP_QP_RCV_STATE_CHANGE", TRACE_TCP_QP_RCV_STATE_CHANGE,
215 : OWNER_TYPE_NVMF_TCP, OBJECT_NONE, 0,
216 : SPDK_TRACE_ARG_TYPE_INT, "state");
217 :
218 0 : spdk_trace_tpoint_register_relation(TRACE_BDEV_IO_START, OBJECT_NVMF_TCP_IO, 1);
219 0 : spdk_trace_tpoint_register_relation(TRACE_BDEV_IO_DONE, OBJECT_NVMF_TCP_IO, 0);
220 0 : spdk_trace_tpoint_register_relation(TRACE_SOCK_REQ_QUEUE, OBJECT_NVMF_TCP_IO, 0);
221 0 : spdk_trace_tpoint_register_relation(TRACE_SOCK_REQ_PEND, OBJECT_NVMF_TCP_IO, 0);
222 0 : spdk_trace_tpoint_register_relation(TRACE_SOCK_REQ_COMPLETE, OBJECT_NVMF_TCP_IO, 0);
223 0 : }
224 1 : SPDK_TRACE_REGISTER_FN(nvmf_tcp_trace, "nvmf_tcp", TRACE_GROUP_NVMF_TCP)
225 :
226 : struct spdk_nvmf_tcp_req {
227 : struct spdk_nvmf_request req;
228 : struct spdk_nvme_cpl rsp;
229 : struct spdk_nvme_cmd cmd;
230 :
231 : /* A PDU that can be used for sending responses. This is
232 : * not the incoming PDU! */
233 : struct nvme_tcp_pdu *pdu;
234 :
235 : /* In-capsule data buffer */
236 : uint8_t *buf;
237 :
238 : struct spdk_nvmf_tcp_req *fused_pair;
239 :
240 : /*
241 : * The PDU for a request may be used multiple times in serial over
242 : * the request's lifetime. For example, first to send an R2T, then
243 : * to send a completion. To catch mistakes where the PDU is used
244 : * twice at the same time, add a debug flag here for init/fini.
245 : */
246 : bool pdu_in_use;
247 : bool has_in_capsule_data;
248 : bool fused_failed;
249 :
250 : /* transfer_tag */
251 : uint16_t ttag;
252 :
253 : enum spdk_nvmf_tcp_req_state state;
254 :
255 : /*
256 : * h2c_offset is used when we receive the h2c_data PDU.
257 : */
258 : uint32_t h2c_offset;
259 :
260 : STAILQ_ENTRY(spdk_nvmf_tcp_req) link;
261 : TAILQ_ENTRY(spdk_nvmf_tcp_req) state_link;
262 : STAILQ_ENTRY(spdk_nvmf_tcp_req) control_msg_link;
263 : };
264 :
265 : struct spdk_nvmf_tcp_qpair {
266 : struct spdk_nvmf_qpair qpair;
267 : struct spdk_nvmf_tcp_poll_group *group;
268 : struct spdk_sock *sock;
269 :
270 : enum nvme_tcp_pdu_recv_state recv_state;
271 : enum nvmf_tcp_qpair_state state;
272 :
273 : /* PDU being actively received */
274 : struct nvme_tcp_pdu *pdu_in_progress;
275 :
276 : struct spdk_nvmf_tcp_req *fused_first;
277 :
278 : /* Queues to track the requests in all states */
279 : TAILQ_HEAD(, spdk_nvmf_tcp_req) tcp_req_working_queue;
280 : TAILQ_HEAD(, spdk_nvmf_tcp_req) tcp_req_free_queue;
281 : SLIST_HEAD(, nvme_tcp_pdu) tcp_pdu_free_queue;
282 : /* Number of working pdus */
283 : uint32_t tcp_pdu_working_count;
284 :
285 : /* Number of requests in each state */
286 : uint32_t state_cntr[TCP_REQUEST_NUM_STATES];
287 :
288 : uint8_t cpda;
289 :
290 : bool host_hdgst_enable;
291 : bool host_ddgst_enable;
292 :
293 : /* This is a spare PDU used for sending special management
294 : * operations. Primarily, this is used for the initial
295 : * connection response and c2h termination request. */
296 : struct nvme_tcp_pdu *mgmt_pdu;
297 :
298 : /* Arrays of in-capsule buffers, requests, and pdus.
299 : * Each array is 'resource_count' number of elements */
300 : void *bufs;
301 : struct spdk_nvmf_tcp_req *reqs;
302 : struct nvme_tcp_pdu *pdus;
303 : uint32_t resource_count;
304 : uint32_t recv_buf_size;
305 :
306 : struct spdk_nvmf_tcp_port *port;
307 :
308 : /* IP address */
309 : char initiator_addr[SPDK_NVMF_TRADDR_MAX_LEN];
310 : char target_addr[SPDK_NVMF_TRADDR_MAX_LEN];
311 :
312 : /* IP port */
313 : uint16_t initiator_port;
314 : uint16_t target_port;
315 :
316 : /* Wait until the host terminates the connection (e.g. after sending C2HTermReq) */
317 : bool wait_terminate;
318 :
319 : /* Timer used to destroy qpair after detecting transport error issue if initiator does
320 : * not close the connection.
321 : */
322 : struct spdk_poller *timeout_poller;
323 :
324 : spdk_nvmf_transport_qpair_fini_cb fini_cb_fn;
325 : void *fini_cb_arg;
326 :
327 : TAILQ_ENTRY(spdk_nvmf_tcp_qpair) link;
328 : bool pending_flush;
329 : };
330 :
331 : struct spdk_nvmf_tcp_control_msg {
332 : STAILQ_ENTRY(spdk_nvmf_tcp_control_msg) link;
333 : };
334 :
335 : struct spdk_nvmf_tcp_control_msg_list {
336 : void *msg_buf;
337 : STAILQ_HEAD(, spdk_nvmf_tcp_control_msg) free_msgs;
338 : STAILQ_HEAD(, spdk_nvmf_tcp_req) waiting_for_msg_reqs;
339 : };
340 :
341 : struct spdk_nvmf_tcp_poll_group {
342 : struct spdk_nvmf_transport_poll_group group;
343 : struct spdk_sock_group *sock_group;
344 :
345 : TAILQ_HEAD(, spdk_nvmf_tcp_qpair) qpairs;
346 : TAILQ_HEAD(, spdk_nvmf_tcp_qpair) await_req;
347 :
348 : struct spdk_io_channel *accel_channel;
349 : struct spdk_nvmf_tcp_control_msg_list *control_msg_list;
350 :
351 : TAILQ_ENTRY(spdk_nvmf_tcp_poll_group) link;
352 : };
353 :
354 : struct spdk_nvmf_tcp_port {
355 : const struct spdk_nvme_transport_id *trid;
356 : struct spdk_sock *listen_sock;
357 : struct spdk_nvmf_transport *transport;
358 : TAILQ_ENTRY(spdk_nvmf_tcp_port) link;
359 : };
360 :
361 : struct tcp_transport_opts {
362 : bool c2h_success;
363 : uint16_t control_msg_num;
364 : uint32_t sock_priority;
365 : };
366 :
367 : struct tcp_psk_entry {
368 : char hostnqn[SPDK_NVMF_NQN_MAX_LEN + 1];
369 : char subnqn[SPDK_NVMF_NQN_MAX_LEN + 1];
370 : char pskid[NVMF_PSK_IDENTITY_LEN];
371 : uint8_t psk[SPDK_TLS_PSK_MAX_LEN];
372 : struct spdk_key *key;
373 : uint32_t psk_size;
374 : enum nvme_tcp_cipher_suite tls_cipher_suite;
375 : TAILQ_ENTRY(tcp_psk_entry) link;
376 : };
377 :
378 : struct spdk_nvmf_tcp_transport {
379 : struct spdk_nvmf_transport transport;
380 : struct tcp_transport_opts tcp_opts;
381 : uint32_t ack_timeout;
382 :
383 : struct spdk_nvmf_tcp_poll_group *next_pg;
384 :
385 : struct spdk_poller *accept_poller;
386 : struct spdk_sock_group *listen_sock_group;
387 :
388 : TAILQ_HEAD(, spdk_nvmf_tcp_port) ports;
389 : TAILQ_HEAD(, spdk_nvmf_tcp_poll_group) poll_groups;
390 :
391 : TAILQ_HEAD(, tcp_psk_entry) psks;
392 : };
393 :
394 : static const struct spdk_json_object_decoder tcp_transport_opts_decoder[] = {
395 : {
396 : "c2h_success", offsetof(struct tcp_transport_opts, c2h_success),
397 : spdk_json_decode_bool, true
398 : },
399 : {
400 : "control_msg_num", offsetof(struct tcp_transport_opts, control_msg_num),
401 : spdk_json_decode_uint16, true
402 : },
403 : {
404 : "sock_priority", offsetof(struct tcp_transport_opts, sock_priority),
405 : spdk_json_decode_uint32, true
406 : },
407 : };
408 :
409 : static bool nvmf_tcp_req_process(struct spdk_nvmf_tcp_transport *ttransport,
410 : struct spdk_nvmf_tcp_req *tcp_req);
411 : static void nvmf_tcp_poll_group_destroy(struct spdk_nvmf_transport_poll_group *group);
412 :
413 : static void _nvmf_tcp_send_c2h_data(struct spdk_nvmf_tcp_qpair *tqpair,
414 : struct spdk_nvmf_tcp_req *tcp_req);
415 :
416 : static inline void
417 10 : nvmf_tcp_req_set_state(struct spdk_nvmf_tcp_req *tcp_req,
418 : enum spdk_nvmf_tcp_req_state state)
419 : {
420 : struct spdk_nvmf_qpair *qpair;
421 : struct spdk_nvmf_tcp_qpair *tqpair;
422 :
423 10 : qpair = tcp_req->req.qpair;
424 10 : tqpair = SPDK_CONTAINEROF(qpair, struct spdk_nvmf_tcp_qpair, qpair);
425 :
426 10 : assert(tqpair->state_cntr[tcp_req->state] > 0);
427 10 : tqpair->state_cntr[tcp_req->state]--;
428 10 : tqpair->state_cntr[state]++;
429 :
430 10 : tcp_req->state = state;
431 10 : }
432 :
433 : static inline struct nvme_tcp_pdu *
434 7 : nvmf_tcp_req_pdu_init(struct spdk_nvmf_tcp_req *tcp_req)
435 : {
436 7 : assert(tcp_req->pdu_in_use == false);
437 :
438 7 : memset(tcp_req->pdu, 0, sizeof(*tcp_req->pdu));
439 7 : tcp_req->pdu->qpair = SPDK_CONTAINEROF(tcp_req->req.qpair, struct spdk_nvmf_tcp_qpair, qpair);
440 :
441 7 : return tcp_req->pdu;
442 : }
443 :
444 : static struct spdk_nvmf_tcp_req *
445 1 : nvmf_tcp_req_get(struct spdk_nvmf_tcp_qpair *tqpair)
446 : {
447 : struct spdk_nvmf_tcp_req *tcp_req;
448 :
449 1 : tcp_req = TAILQ_FIRST(&tqpair->tcp_req_free_queue);
450 1 : if (spdk_unlikely(!tcp_req)) {
451 0 : return NULL;
452 : }
453 :
454 1 : memset(&tcp_req->rsp, 0, sizeof(tcp_req->rsp));
455 1 : tcp_req->h2c_offset = 0;
456 1 : tcp_req->has_in_capsule_data = false;
457 1 : tcp_req->req.dif_enabled = false;
458 1 : tcp_req->req.zcopy_phase = NVMF_ZCOPY_PHASE_NONE;
459 :
460 1 : TAILQ_REMOVE(&tqpair->tcp_req_free_queue, tcp_req, state_link);
461 1 : TAILQ_INSERT_TAIL(&tqpair->tcp_req_working_queue, tcp_req, state_link);
462 1 : tqpair->qpair.queue_depth++;
463 1 : nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_NEW);
464 1 : return tcp_req;
465 : }
466 :
467 : static inline void
468 0 : nvmf_tcp_req_put(struct spdk_nvmf_tcp_qpair *tqpair, struct spdk_nvmf_tcp_req *tcp_req)
469 : {
470 0 : assert(!tcp_req->pdu_in_use);
471 :
472 0 : TAILQ_REMOVE(&tqpair->tcp_req_working_queue, tcp_req, state_link);
473 0 : TAILQ_INSERT_TAIL(&tqpair->tcp_req_free_queue, tcp_req, state_link);
474 0 : tqpair->qpair.queue_depth--;
475 0 : nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_FREE);
476 0 : }
477 :
478 : static void
479 1 : nvmf_tcp_req_get_buffers_done(struct spdk_nvmf_request *req)
480 : {
481 : struct spdk_nvmf_tcp_req *tcp_req;
482 : struct spdk_nvmf_transport *transport;
483 : struct spdk_nvmf_tcp_transport *ttransport;
484 :
485 1 : tcp_req = SPDK_CONTAINEROF(req, struct spdk_nvmf_tcp_req, req);
486 1 : transport = req->qpair->transport;
487 1 : ttransport = SPDK_CONTAINEROF(transport, struct spdk_nvmf_tcp_transport, transport);
488 :
489 1 : nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_HAVE_BUFFER);
490 1 : nvmf_tcp_req_process(ttransport, tcp_req);
491 1 : }
492 :
493 : static void
494 0 : nvmf_tcp_request_free(void *cb_arg)
495 : {
496 : struct spdk_nvmf_tcp_transport *ttransport;
497 0 : struct spdk_nvmf_tcp_req *tcp_req = cb_arg;
498 :
499 0 : assert(tcp_req != NULL);
500 :
501 0 : SPDK_DEBUGLOG(nvmf_tcp, "tcp_req=%p will be freed\n", tcp_req);
502 0 : ttransport = SPDK_CONTAINEROF(tcp_req->req.qpair->transport,
503 : struct spdk_nvmf_tcp_transport, transport);
504 0 : nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_COMPLETED);
505 0 : nvmf_tcp_req_process(ttransport, tcp_req);
506 0 : }
507 :
508 : static int
509 0 : nvmf_tcp_req_free(struct spdk_nvmf_request *req)
510 : {
511 0 : struct spdk_nvmf_tcp_req *tcp_req = SPDK_CONTAINEROF(req, struct spdk_nvmf_tcp_req, req);
512 :
513 0 : nvmf_tcp_request_free(tcp_req);
514 :
515 0 : return 0;
516 : }
517 :
518 : static void
519 6 : nvmf_tcp_drain_state_queue(struct spdk_nvmf_tcp_qpair *tqpair,
520 : enum spdk_nvmf_tcp_req_state state)
521 : {
522 : struct spdk_nvmf_tcp_req *tcp_req, *req_tmp;
523 :
524 6 : assert(state != TCP_REQUEST_STATE_FREE);
525 6 : TAILQ_FOREACH_SAFE(tcp_req, &tqpair->tcp_req_working_queue, state_link, req_tmp) {
526 0 : if (state == tcp_req->state) {
527 0 : nvmf_tcp_request_free(tcp_req);
528 : }
529 : }
530 6 : }
531 :
532 : static inline void
533 0 : nvmf_tcp_request_get_buffers_abort(struct spdk_nvmf_tcp_req *tcp_req)
534 : {
535 : /* Request can wait either for the iobuf or control_msg */
536 0 : struct spdk_nvmf_poll_group *group = tcp_req->req.qpair->group;
537 0 : struct spdk_nvmf_transport *transport = tcp_req->req.qpair->transport;
538 0 : struct spdk_nvmf_transport_poll_group *tgroup = nvmf_get_transport_poll_group(group, transport);
539 0 : struct spdk_nvmf_tcp_poll_group *tcp_group = SPDK_CONTAINEROF(tgroup,
540 : struct spdk_nvmf_tcp_poll_group, group);
541 : struct spdk_nvmf_tcp_req *tmp_req, *abort_req;
542 :
543 0 : assert(tcp_req->state == TCP_REQUEST_STATE_NEED_BUFFER);
544 :
545 0 : STAILQ_FOREACH_SAFE(abort_req, &tcp_group->control_msg_list->waiting_for_msg_reqs, control_msg_link,
546 : tmp_req) {
547 0 : if (abort_req == tcp_req) {
548 0 : STAILQ_REMOVE(&tcp_group->control_msg_list->waiting_for_msg_reqs, abort_req, spdk_nvmf_tcp_req,
549 : control_msg_link);
550 0 : return;
551 : }
552 : }
553 :
554 0 : if (!nvmf_request_get_buffers_abort(&tcp_req->req)) {
555 0 : SPDK_ERRLOG("Failed to abort tcp_req=%p\n", tcp_req);
556 0 : assert(0 && "Should never happen");
557 : }
558 : }
559 :
560 : static void
561 1 : nvmf_tcp_cleanup_all_states(struct spdk_nvmf_tcp_qpair *tqpair)
562 : {
563 : struct spdk_nvmf_tcp_req *tcp_req, *req_tmp;
564 :
565 1 : nvmf_tcp_drain_state_queue(tqpair, TCP_REQUEST_STATE_TRANSFERRING_CONTROLLER_TO_HOST);
566 1 : nvmf_tcp_drain_state_queue(tqpair, TCP_REQUEST_STATE_NEW);
567 :
568 : /* Wipe the requests waiting for buffer from the waiting list */
569 1 : TAILQ_FOREACH_SAFE(tcp_req, &tqpair->tcp_req_working_queue, state_link, req_tmp) {
570 0 : if (tcp_req->state == TCP_REQUEST_STATE_NEED_BUFFER) {
571 0 : nvmf_tcp_request_get_buffers_abort(tcp_req);
572 : }
573 : }
574 :
575 1 : nvmf_tcp_drain_state_queue(tqpair, TCP_REQUEST_STATE_NEED_BUFFER);
576 1 : nvmf_tcp_drain_state_queue(tqpair, TCP_REQUEST_STATE_EXECUTING);
577 1 : nvmf_tcp_drain_state_queue(tqpair, TCP_REQUEST_STATE_TRANSFERRING_HOST_TO_CONTROLLER);
578 1 : nvmf_tcp_drain_state_queue(tqpair, TCP_REQUEST_STATE_AWAITING_R2T_ACK);
579 1 : }
580 :
581 : static void
582 0 : nvmf_tcp_dump_qpair_req_contents(struct spdk_nvmf_tcp_qpair *tqpair)
583 : {
584 : int i;
585 : struct spdk_nvmf_tcp_req *tcp_req;
586 :
587 0 : SPDK_ERRLOG("Dumping contents of queue pair (QID %d)\n", tqpair->qpair.qid);
588 0 : for (i = 1; i < TCP_REQUEST_NUM_STATES; i++) {
589 0 : SPDK_ERRLOG("\tNum of requests in state[%d] = %u\n", i, tqpair->state_cntr[i]);
590 0 : TAILQ_FOREACH(tcp_req, &tqpair->tcp_req_working_queue, state_link) {
591 0 : if ((int)tcp_req->state == i) {
592 0 : SPDK_ERRLOG("\t\tRequest Data From Pool: %d\n", tcp_req->req.data_from_pool);
593 0 : SPDK_ERRLOG("\t\tRequest opcode: %d\n", tcp_req->req.cmd->nvmf_cmd.opcode);
594 : }
595 : }
596 : }
597 0 : }
598 :
599 : static void
600 1 : _nvmf_tcp_qpair_destroy(void *_tqpair)
601 : {
602 1 : struct spdk_nvmf_tcp_qpair *tqpair = _tqpair;
603 1 : spdk_nvmf_transport_qpair_fini_cb cb_fn = tqpair->fini_cb_fn;
604 1 : void *cb_arg = tqpair->fini_cb_arg;
605 1 : int err = 0;
606 :
607 1 : spdk_trace_record(TRACE_TCP_QP_DESTROY, tqpair->qpair.trace_id, 0, 0);
608 :
609 1 : SPDK_DEBUGLOG(nvmf_tcp, "enter\n");
610 :
611 1 : err = spdk_sock_close(&tqpair->sock);
612 1 : assert(err == 0);
613 1 : nvmf_tcp_cleanup_all_states(tqpair);
614 :
615 1 : if (tqpair->state_cntr[TCP_REQUEST_STATE_FREE] != tqpair->resource_count) {
616 0 : SPDK_ERRLOG("tqpair(%p) free tcp request num is %u but should be %u\n", tqpair,
617 : tqpair->state_cntr[TCP_REQUEST_STATE_FREE],
618 : tqpair->resource_count);
619 0 : err++;
620 : }
621 :
622 1 : if (err > 0) {
623 0 : nvmf_tcp_dump_qpair_req_contents(tqpair);
624 : }
625 :
626 : /* The timeout poller might still be registered here if we close the qpair before host
627 : * terminates the connection.
628 : */
629 1 : spdk_poller_unregister(&tqpair->timeout_poller);
630 1 : spdk_dma_free(tqpair->pdus);
631 1 : free(tqpair->reqs);
632 1 : spdk_free(tqpair->bufs);
633 1 : spdk_trace_unregister_owner(tqpair->qpair.trace_id);
634 1 : free(tqpair);
635 :
636 1 : if (cb_fn != NULL) {
637 0 : cb_fn(cb_arg);
638 : }
639 :
640 1 : SPDK_DEBUGLOG(nvmf_tcp, "Leave\n");
641 1 : }
642 :
643 : static void
644 1 : nvmf_tcp_qpair_destroy(struct spdk_nvmf_tcp_qpair *tqpair)
645 : {
646 : /* Delay the destruction to make sure it isn't performed from the context of a sock
647 : * callback. Otherwise, spdk_sock_close() might not abort pending requests, causing their
648 : * completions to be executed after the qpair is freed. (Note: this fixed issue #2471.)
649 : */
650 1 : spdk_thread_send_msg(spdk_get_thread(), _nvmf_tcp_qpair_destroy, tqpair);
651 1 : }
652 :
653 : static void
654 0 : nvmf_tcp_dump_opts(struct spdk_nvmf_transport *transport, struct spdk_json_write_ctx *w)
655 : {
656 : struct spdk_nvmf_tcp_transport *ttransport;
657 0 : assert(w != NULL);
658 :
659 0 : ttransport = SPDK_CONTAINEROF(transport, struct spdk_nvmf_tcp_transport, transport);
660 0 : spdk_json_write_named_bool(w, "c2h_success", ttransport->tcp_opts.c2h_success);
661 0 : spdk_json_write_named_uint32(w, "sock_priority", ttransport->tcp_opts.sock_priority);
662 0 : }
663 :
664 : static void
665 1 : nvmf_tcp_free_psk_entry(struct tcp_psk_entry *entry)
666 : {
667 1 : if (entry == NULL) {
668 0 : return;
669 : }
670 :
671 1 : spdk_memset_s(entry->psk, sizeof(entry->psk), 0, sizeof(entry->psk));
672 1 : spdk_keyring_put_key(entry->key);
673 1 : free(entry);
674 : }
675 :
676 : static int
677 5 : nvmf_tcp_destroy(struct spdk_nvmf_transport *transport,
678 : spdk_nvmf_transport_destroy_done_cb cb_fn, void *cb_arg)
679 : {
680 : struct spdk_nvmf_tcp_transport *ttransport;
681 : struct tcp_psk_entry *entry, *tmp;
682 :
683 5 : assert(transport != NULL);
684 5 : ttransport = SPDK_CONTAINEROF(transport, struct spdk_nvmf_tcp_transport, transport);
685 :
686 5 : TAILQ_FOREACH_SAFE(entry, &ttransport->psks, link, tmp) {
687 0 : TAILQ_REMOVE(&ttransport->psks, entry, link);
688 0 : nvmf_tcp_free_psk_entry(entry);
689 : }
690 :
691 5 : spdk_poller_unregister(&ttransport->accept_poller);
692 5 : spdk_sock_group_unregister_interrupt(ttransport->listen_sock_group);
693 5 : spdk_sock_group_close(&ttransport->listen_sock_group);
694 5 : free(ttransport);
695 :
696 5 : if (cb_fn) {
697 0 : cb_fn(cb_arg);
698 : }
699 5 : return 0;
700 : }
701 :
702 : static int nvmf_tcp_accept(void *ctx);
703 :
704 : static void nvmf_tcp_accept_cb(void *ctx, struct spdk_sock_group *group, struct spdk_sock *sock);
705 :
706 : static struct spdk_nvmf_transport *
707 6 : nvmf_tcp_create(struct spdk_nvmf_transport_opts *opts)
708 : {
709 : struct spdk_nvmf_tcp_transport *ttransport;
710 : uint32_t sge_count;
711 : uint32_t min_shared_buffers;
712 : int rc;
713 : uint64_t period;
714 :
715 6 : ttransport = calloc(1, sizeof(*ttransport));
716 6 : if (!ttransport) {
717 0 : return NULL;
718 : }
719 :
720 6 : TAILQ_INIT(&ttransport->ports);
721 6 : TAILQ_INIT(&ttransport->poll_groups);
722 6 : TAILQ_INIT(&ttransport->psks);
723 :
724 6 : ttransport->transport.ops = &spdk_nvmf_transport_tcp;
725 :
726 6 : ttransport->tcp_opts.c2h_success = SPDK_NVMF_TCP_DEFAULT_SUCCESS_OPTIMIZATION;
727 6 : ttransport->tcp_opts.sock_priority = SPDK_NVMF_TCP_DEFAULT_SOCK_PRIORITY;
728 6 : ttransport->tcp_opts.control_msg_num = SPDK_NVMF_TCP_DEFAULT_CONTROL_MSG_NUM;
729 6 : if (opts->transport_specific != NULL &&
730 0 : spdk_json_decode_object_relaxed(opts->transport_specific, tcp_transport_opts_decoder,
731 : SPDK_COUNTOF(tcp_transport_opts_decoder),
732 0 : &ttransport->tcp_opts)) {
733 0 : SPDK_ERRLOG("spdk_json_decode_object_relaxed failed\n");
734 0 : free(ttransport);
735 0 : return NULL;
736 : }
737 :
738 6 : SPDK_NOTICELOG("*** TCP Transport Init ***\n");
739 :
740 6 : SPDK_INFOLOG(nvmf_tcp, "*** TCP Transport Init ***\n"
741 : " Transport opts: max_ioq_depth=%d, max_io_size=%d,\n"
742 : " max_io_qpairs_per_ctrlr=%d, io_unit_size=%d,\n"
743 : " in_capsule_data_size=%d, max_aq_depth=%d\n"
744 : " num_shared_buffers=%d, c2h_success=%d,\n"
745 : " dif_insert_or_strip=%d, sock_priority=%d\n"
746 : " abort_timeout_sec=%d, control_msg_num=%hu\n"
747 : " ack_timeout=%d\n",
748 : opts->max_queue_depth,
749 : opts->max_io_size,
750 : opts->max_qpairs_per_ctrlr - 1,
751 : opts->io_unit_size,
752 : opts->in_capsule_data_size,
753 : opts->max_aq_depth,
754 : opts->num_shared_buffers,
755 : ttransport->tcp_opts.c2h_success,
756 : opts->dif_insert_or_strip,
757 : ttransport->tcp_opts.sock_priority,
758 : opts->abort_timeout_sec,
759 : ttransport->tcp_opts.control_msg_num,
760 : opts->ack_timeout);
761 :
762 6 : if (ttransport->tcp_opts.sock_priority > SPDK_NVMF_TCP_DEFAULT_MAX_SOCK_PRIORITY) {
763 0 : SPDK_ERRLOG("Unsupported socket_priority=%d, the current range is: 0 to %d\n"
764 : "you can use man 7 socket to view the range of priority under SO_PRIORITY item\n",
765 : ttransport->tcp_opts.sock_priority, SPDK_NVMF_TCP_DEFAULT_MAX_SOCK_PRIORITY);
766 0 : free(ttransport);
767 0 : return NULL;
768 : }
769 :
770 6 : if (ttransport->tcp_opts.control_msg_num == 0 &&
771 0 : opts->in_capsule_data_size < SPDK_NVME_TCP_IN_CAPSULE_DATA_MAX_SIZE) {
772 0 : SPDK_WARNLOG("TCP param control_msg_num can't be 0 if ICD is less than %u bytes. Using default value %u\n",
773 : SPDK_NVME_TCP_IN_CAPSULE_DATA_MAX_SIZE, SPDK_NVMF_TCP_DEFAULT_CONTROL_MSG_NUM);
774 0 : ttransport->tcp_opts.control_msg_num = SPDK_NVMF_TCP_DEFAULT_CONTROL_MSG_NUM;
775 : }
776 :
777 : /* I/O unit size cannot be larger than max I/O size */
778 6 : if (opts->io_unit_size > opts->max_io_size) {
779 1 : SPDK_WARNLOG("TCP param io_unit_size %u can't be larger than max_io_size %u. Using max_io_size as io_unit_size\n",
780 : opts->io_unit_size, opts->max_io_size);
781 1 : opts->io_unit_size = opts->max_io_size;
782 : }
783 :
784 : /* In capsule data size cannot be larger than max I/O size */
785 6 : if (opts->in_capsule_data_size > opts->max_io_size) {
786 0 : SPDK_WARNLOG("TCP param ICD size %u can't be larger than max_io_size %u. Using max_io_size as ICD size\n",
787 : opts->io_unit_size, opts->max_io_size);
788 0 : opts->in_capsule_data_size = opts->max_io_size;
789 : }
790 :
791 : /* max IO queue depth cannot be smaller than 2 or larger than 65535.
792 : * We will not check SPDK_NVMF_TCP_MAX_IO_QUEUE_DEPTH, because max_queue_depth is 16bits and always not larger than 64k. */
793 6 : if (opts->max_queue_depth < SPDK_NVMF_TCP_MIN_IO_QUEUE_DEPTH) {
794 0 : SPDK_WARNLOG("TCP param max_queue_depth %u can't be smaller than %u or larger than %u. Using default value %u\n",
795 : opts->max_queue_depth, SPDK_NVMF_TCP_MIN_IO_QUEUE_DEPTH,
796 : SPDK_NVMF_TCP_MAX_IO_QUEUE_DEPTH, SPDK_NVMF_TCP_DEFAULT_MAX_IO_QUEUE_DEPTH);
797 0 : opts->max_queue_depth = SPDK_NVMF_TCP_DEFAULT_MAX_IO_QUEUE_DEPTH;
798 : }
799 :
800 : /* max admin queue depth cannot be smaller than 2 or larger than 4096 */
801 6 : if (opts->max_aq_depth < SPDK_NVMF_TCP_MIN_ADMIN_QUEUE_DEPTH ||
802 6 : opts->max_aq_depth > SPDK_NVMF_TCP_MAX_ADMIN_QUEUE_DEPTH) {
803 0 : SPDK_WARNLOG("TCP param max_aq_depth %u can't be smaller than %u or larger than %u. Using default value %u\n",
804 : opts->max_aq_depth, SPDK_NVMF_TCP_MIN_ADMIN_QUEUE_DEPTH,
805 : SPDK_NVMF_TCP_MAX_ADMIN_QUEUE_DEPTH, SPDK_NVMF_TCP_DEFAULT_MAX_ADMIN_QUEUE_DEPTH);
806 0 : opts->max_aq_depth = SPDK_NVMF_TCP_DEFAULT_MAX_ADMIN_QUEUE_DEPTH;
807 : }
808 :
809 6 : sge_count = opts->max_io_size / opts->io_unit_size;
810 6 : if (sge_count > SPDK_NVMF_MAX_SGL_ENTRIES) {
811 1 : SPDK_ERRLOG("Unsupported IO Unit size specified, %d bytes\n", opts->io_unit_size);
812 1 : free(ttransport);
813 1 : return NULL;
814 : }
815 :
816 : /* If buf_cache_size == UINT32_MAX, we will dynamically pick a cache size later that we know will fit. */
817 5 : if (opts->buf_cache_size < UINT32_MAX) {
818 5 : min_shared_buffers = spdk_env_get_core_count() * opts->buf_cache_size;
819 5 : if (min_shared_buffers > opts->num_shared_buffers) {
820 0 : SPDK_ERRLOG("There are not enough buffers to satisfy "
821 : "per-poll group caches for each thread. (%" PRIu32 ") "
822 : "supplied. (%" PRIu32 ") required\n", opts->num_shared_buffers, min_shared_buffers);
823 0 : SPDK_ERRLOG("Please specify a larger number of shared buffers\n");
824 0 : free(ttransport);
825 0 : return NULL;
826 : }
827 : }
828 :
829 5 : period = spdk_interrupt_mode_is_enabled() ? 0 : opts->acceptor_poll_rate;
830 5 : ttransport->accept_poller = SPDK_POLLER_REGISTER(nvmf_tcp_accept, &ttransport->transport, period);
831 5 : if (!ttransport->accept_poller) {
832 0 : free(ttransport);
833 0 : return NULL;
834 : }
835 :
836 5 : spdk_poller_register_interrupt(ttransport->accept_poller, NULL, NULL);
837 :
838 5 : ttransport->listen_sock_group = spdk_sock_group_create(NULL);
839 5 : if (ttransport->listen_sock_group == NULL) {
840 0 : SPDK_ERRLOG("Failed to create socket group for listen sockets\n");
841 0 : spdk_poller_unregister(&ttransport->accept_poller);
842 0 : free(ttransport);
843 0 : return NULL;
844 : }
845 :
846 5 : if (spdk_interrupt_mode_is_enabled()) {
847 0 : rc = SPDK_SOCK_GROUP_REGISTER_INTERRUPT(ttransport->listen_sock_group,
848 : SPDK_INTERRUPT_EVENT_IN | SPDK_INTERRUPT_EVENT_OUT, nvmf_tcp_accept, &ttransport->transport);
849 0 : if (rc != 0) {
850 0 : SPDK_ERRLOG("Failed to register interrupt for listen socker sock group\n");
851 0 : spdk_sock_group_close(&ttransport->listen_sock_group);
852 0 : spdk_poller_unregister(&ttransport->accept_poller);
853 0 : free(ttransport);
854 0 : return NULL;
855 : }
856 : }
857 :
858 5 : return &ttransport->transport;
859 : }
860 :
861 : static int
862 0 : nvmf_tcp_trsvcid_to_int(const char *trsvcid)
863 : {
864 : unsigned long long ull;
865 0 : char *end = NULL;
866 :
867 0 : ull = strtoull(trsvcid, &end, 10);
868 0 : if (end == NULL || end == trsvcid || *end != '\0') {
869 0 : return -1;
870 : }
871 :
872 : /* Valid TCP/IP port numbers are in [1, 65535] */
873 0 : if (ull == 0 || ull > 65535) {
874 0 : return -1;
875 : }
876 :
877 0 : return (int)ull;
878 : }
879 :
880 : /**
881 : * Canonicalize a listen address trid.
882 : */
883 : static int
884 0 : nvmf_tcp_canon_listen_trid(struct spdk_nvme_transport_id *canon_trid,
885 : const struct spdk_nvme_transport_id *trid)
886 : {
887 : int trsvcid_int;
888 :
889 0 : trsvcid_int = nvmf_tcp_trsvcid_to_int(trid->trsvcid);
890 0 : if (trsvcid_int < 0) {
891 0 : return -EINVAL;
892 : }
893 :
894 0 : memset(canon_trid, 0, sizeof(*canon_trid));
895 0 : spdk_nvme_trid_populate_transport(canon_trid, SPDK_NVME_TRANSPORT_TCP);
896 0 : canon_trid->adrfam = trid->adrfam;
897 0 : snprintf(canon_trid->traddr, sizeof(canon_trid->traddr), "%s", trid->traddr);
898 0 : snprintf(canon_trid->trsvcid, sizeof(canon_trid->trsvcid), "%d", trsvcid_int);
899 :
900 0 : return 0;
901 : }
902 :
903 : /**
904 : * Find an existing listening port.
905 : */
906 : static struct spdk_nvmf_tcp_port *
907 0 : nvmf_tcp_find_port(struct spdk_nvmf_tcp_transport *ttransport,
908 : const struct spdk_nvme_transport_id *trid)
909 : {
910 0 : struct spdk_nvme_transport_id canon_trid;
911 : struct spdk_nvmf_tcp_port *port;
912 :
913 0 : if (nvmf_tcp_canon_listen_trid(&canon_trid, trid) != 0) {
914 0 : return NULL;
915 : }
916 :
917 0 : TAILQ_FOREACH(port, &ttransport->ports, link) {
918 0 : if (spdk_nvme_transport_id_compare(&canon_trid, port->trid) == 0) {
919 0 : return port;
920 : }
921 : }
922 :
923 0 : return NULL;
924 : }
925 :
926 : static int
927 0 : tcp_sock_get_key(uint8_t *out, int out_len, const char **cipher, const char *pskid,
928 : void *get_key_ctx)
929 : {
930 : struct tcp_psk_entry *entry;
931 0 : struct spdk_nvmf_tcp_transport *ttransport = get_key_ctx;
932 : size_t psk_len;
933 : int rc;
934 :
935 0 : TAILQ_FOREACH(entry, &ttransport->psks, link) {
936 0 : if (strcmp(pskid, entry->pskid) != 0) {
937 0 : continue;
938 : }
939 :
940 0 : psk_len = entry->psk_size;
941 0 : if ((size_t)out_len < psk_len) {
942 0 : SPDK_ERRLOG("Out buffer of size: %" PRIu32 " cannot fit PSK of len: %lu\n",
943 : out_len, psk_len);
944 0 : return -ENOBUFS;
945 : }
946 :
947 : /* Convert PSK to the TLS PSK format. */
948 0 : rc = nvme_tcp_derive_tls_psk(entry->psk, psk_len, pskid, out, out_len,
949 : entry->tls_cipher_suite);
950 0 : if (rc < 0) {
951 0 : SPDK_ERRLOG("Could not generate TLS PSK\n");
952 : }
953 :
954 0 : switch (entry->tls_cipher_suite) {
955 0 : case NVME_TCP_CIPHER_AES_128_GCM_SHA256:
956 0 : *cipher = "TLS_AES_128_GCM_SHA256";
957 0 : break;
958 0 : case NVME_TCP_CIPHER_AES_256_GCM_SHA384:
959 0 : *cipher = "TLS_AES_256_GCM_SHA384";
960 0 : break;
961 0 : default:
962 0 : *cipher = NULL;
963 0 : return -ENOTSUP;
964 : }
965 :
966 0 : return rc;
967 : }
968 :
969 0 : SPDK_ERRLOG("Could not find PSK for identity: %s\n", pskid);
970 :
971 0 : return -EINVAL;
972 : }
973 :
974 : static int
975 0 : nvmf_tcp_listen(struct spdk_nvmf_transport *transport, const struct spdk_nvme_transport_id *trid,
976 : struct spdk_nvmf_listen_opts *listen_opts)
977 : {
978 : struct spdk_nvmf_tcp_transport *ttransport;
979 : struct spdk_nvmf_tcp_port *port;
980 : int trsvcid_int;
981 : uint8_t adrfam;
982 : const char *sock_impl_name;
983 0 : struct spdk_sock_impl_opts impl_opts;
984 0 : size_t impl_opts_size = sizeof(impl_opts);
985 0 : struct spdk_sock_opts opts;
986 : int rc;
987 :
988 0 : if (!strlen(trid->trsvcid)) {
989 0 : SPDK_ERRLOG("Service id is required\n");
990 0 : return -EINVAL;
991 : }
992 :
993 0 : ttransport = SPDK_CONTAINEROF(transport, struct spdk_nvmf_tcp_transport, transport);
994 :
995 0 : trsvcid_int = nvmf_tcp_trsvcid_to_int(trid->trsvcid);
996 0 : if (trsvcid_int < 0) {
997 0 : SPDK_ERRLOG("Invalid trsvcid '%s'\n", trid->trsvcid);
998 0 : return -EINVAL;
999 : }
1000 :
1001 0 : port = calloc(1, sizeof(*port));
1002 0 : if (!port) {
1003 0 : SPDK_ERRLOG("Port allocation failed\n");
1004 0 : return -ENOMEM;
1005 : }
1006 :
1007 0 : port->trid = trid;
1008 :
1009 0 : sock_impl_name = NULL;
1010 :
1011 0 : opts.opts_size = sizeof(opts);
1012 0 : spdk_sock_get_default_opts(&opts);
1013 0 : opts.priority = ttransport->tcp_opts.sock_priority;
1014 0 : opts.ack_timeout = transport->opts.ack_timeout;
1015 0 : if (listen_opts->secure_channel) {
1016 0 : if (listen_opts->sock_impl &&
1017 0 : strncmp("ssl", listen_opts->sock_impl, strlen(listen_opts->sock_impl))) {
1018 0 : SPDK_ERRLOG("Enabling secure_channel while specifying a sock_impl different from 'ssl' is unsupported");
1019 0 : free(port);
1020 0 : return -EINVAL;
1021 : }
1022 0 : listen_opts->sock_impl = "ssl";
1023 : }
1024 :
1025 0 : if (listen_opts->sock_impl) {
1026 0 : sock_impl_name = listen_opts->sock_impl;
1027 0 : spdk_sock_impl_get_opts(sock_impl_name, &impl_opts, &impl_opts_size);
1028 :
1029 0 : if (!strncmp("ssl", sock_impl_name, strlen(sock_impl_name))) {
1030 0 : if (!g_tls_log) {
1031 0 : SPDK_NOTICELOG("TLS support is considered experimental\n");
1032 0 : g_tls_log = true;
1033 : }
1034 0 : impl_opts.tls_version = SPDK_TLS_VERSION_1_3;
1035 0 : impl_opts.get_key = tcp_sock_get_key;
1036 0 : impl_opts.get_key_ctx = ttransport;
1037 0 : impl_opts.tls_cipher_suites = "TLS_AES_256_GCM_SHA384:TLS_AES_128_GCM_SHA256";
1038 : }
1039 :
1040 0 : opts.impl_opts = &impl_opts;
1041 0 : opts.impl_opts_size = sizeof(impl_opts);
1042 : }
1043 :
1044 0 : port->listen_sock = spdk_sock_listen_ext(trid->traddr, trsvcid_int,
1045 : sock_impl_name, &opts);
1046 0 : if (port->listen_sock == NULL) {
1047 0 : SPDK_ERRLOG("spdk_sock_listen(%s, %d) failed: %s (%d)\n",
1048 : trid->traddr, trsvcid_int,
1049 : spdk_strerror(errno), errno);
1050 0 : free(port);
1051 0 : return -errno;
1052 : }
1053 :
1054 0 : if (spdk_sock_is_ipv4(port->listen_sock)) {
1055 0 : adrfam = SPDK_NVMF_ADRFAM_IPV4;
1056 0 : } else if (spdk_sock_is_ipv6(port->listen_sock)) {
1057 0 : adrfam = SPDK_NVMF_ADRFAM_IPV6;
1058 : } else {
1059 0 : SPDK_ERRLOG("Unhandled socket type\n");
1060 0 : adrfam = 0;
1061 : }
1062 :
1063 0 : if (adrfam != trid->adrfam) {
1064 0 : SPDK_ERRLOG("Socket address family mismatch\n");
1065 0 : spdk_sock_close(&port->listen_sock);
1066 0 : free(port);
1067 0 : return -EINVAL;
1068 : }
1069 :
1070 0 : rc = spdk_sock_group_add_sock(ttransport->listen_sock_group, port->listen_sock, nvmf_tcp_accept_cb,
1071 : port);
1072 0 : if (rc < 0) {
1073 0 : SPDK_ERRLOG("Failed to add socket to the listen socket group\n");
1074 0 : spdk_sock_close(&port->listen_sock);
1075 0 : free(port);
1076 0 : return -errno;
1077 : }
1078 :
1079 0 : port->transport = transport;
1080 :
1081 0 : SPDK_NOTICELOG("*** NVMe/TCP Target Listening on %s port %s ***\n",
1082 : trid->traddr, trid->trsvcid);
1083 :
1084 0 : TAILQ_INSERT_TAIL(&ttransport->ports, port, link);
1085 0 : return 0;
1086 : }
1087 :
1088 : static void
1089 0 : nvmf_tcp_stop_listen(struct spdk_nvmf_transport *transport,
1090 : const struct spdk_nvme_transport_id *trid)
1091 : {
1092 : struct spdk_nvmf_tcp_transport *ttransport;
1093 : struct spdk_nvmf_tcp_port *port;
1094 :
1095 0 : ttransport = SPDK_CONTAINEROF(transport, struct spdk_nvmf_tcp_transport, transport);
1096 :
1097 0 : SPDK_DEBUGLOG(nvmf_tcp, "Removing listen address %s port %s\n",
1098 : trid->traddr, trid->trsvcid);
1099 :
1100 0 : port = nvmf_tcp_find_port(ttransport, trid);
1101 0 : if (port) {
1102 0 : spdk_sock_group_remove_sock(ttransport->listen_sock_group, port->listen_sock);
1103 0 : TAILQ_REMOVE(&ttransport->ports, port, link);
1104 0 : spdk_sock_close(&port->listen_sock);
1105 0 : free(port);
1106 : }
1107 0 : }
1108 :
1109 : static void nvmf_tcp_qpair_set_recv_state(struct spdk_nvmf_tcp_qpair *tqpair,
1110 : enum nvme_tcp_pdu_recv_state state);
1111 :
1112 : static void
1113 1 : nvmf_tcp_qpair_set_state(struct spdk_nvmf_tcp_qpair *tqpair, enum nvmf_tcp_qpair_state state)
1114 : {
1115 1 : tqpair->state = state;
1116 1 : spdk_trace_record(TRACE_TCP_QP_STATE_CHANGE, tqpair->qpair.trace_id, 0, 0,
1117 : (uint64_t)tqpair->state);
1118 1 : }
1119 :
1120 : static void
1121 0 : nvmf_tcp_qpair_disconnect(struct spdk_nvmf_tcp_qpair *tqpair)
1122 : {
1123 0 : SPDK_DEBUGLOG(nvmf_tcp, "Disconnecting qpair %p\n", tqpair);
1124 :
1125 0 : spdk_trace_record(TRACE_TCP_QP_DISCONNECT, tqpair->qpair.trace_id, 0, 0);
1126 :
1127 0 : if (tqpair->state <= NVMF_TCP_QPAIR_STATE_RUNNING) {
1128 0 : nvmf_tcp_qpair_set_state(tqpair, NVMF_TCP_QPAIR_STATE_EXITING);
1129 0 : assert(tqpair->recv_state == NVME_TCP_PDU_RECV_STATE_ERROR);
1130 0 : spdk_poller_unregister(&tqpair->timeout_poller);
1131 :
1132 : /* This will end up calling nvmf_tcp_close_qpair */
1133 0 : spdk_nvmf_qpair_disconnect(&tqpair->qpair);
1134 : }
1135 0 : }
1136 :
1137 : static void
1138 16 : _mgmt_pdu_write_done(void *_tqpair, int err)
1139 : {
1140 16 : struct spdk_nvmf_tcp_qpair *tqpair = _tqpair;
1141 16 : struct nvme_tcp_pdu *pdu = tqpair->mgmt_pdu;
1142 :
1143 16 : if (spdk_unlikely(err != 0)) {
1144 16 : nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_QUIESCING);
1145 16 : return;
1146 : }
1147 :
1148 0 : assert(pdu->cb_fn != NULL);
1149 0 : pdu->cb_fn(pdu->cb_arg);
1150 : }
1151 :
1152 : static void
1153 0 : _req_pdu_write_done(void *req, int err)
1154 : {
1155 0 : struct spdk_nvmf_tcp_req *tcp_req = req;
1156 0 : struct nvme_tcp_pdu *pdu = tcp_req->pdu;
1157 0 : struct spdk_nvmf_tcp_qpair *tqpair = pdu->qpair;
1158 :
1159 0 : assert(tcp_req->pdu_in_use);
1160 0 : tcp_req->pdu_in_use = false;
1161 :
1162 : /* If the request is in a completed state, we're waiting for write completion to free it */
1163 0 : if (spdk_unlikely(tcp_req->state == TCP_REQUEST_STATE_COMPLETED)) {
1164 0 : nvmf_tcp_request_free(tcp_req);
1165 0 : return;
1166 : }
1167 :
1168 0 : if (spdk_unlikely(err != 0)) {
1169 0 : nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_QUIESCING);
1170 0 : return;
1171 : }
1172 :
1173 0 : assert(pdu->cb_fn != NULL);
1174 0 : pdu->cb_fn(pdu->cb_arg);
1175 : }
1176 :
1177 : static void
1178 16 : _pdu_write_done(struct nvme_tcp_pdu *pdu, int err)
1179 : {
1180 16 : pdu->sock_req.cb_fn(pdu->sock_req.cb_arg, err);
1181 16 : }
1182 :
1183 : static void
1184 0 : tcp_sock_flush_cb(void *arg)
1185 : {
1186 0 : struct spdk_nvmf_tcp_qpair *tqpair = arg;
1187 0 : int rc = spdk_sock_flush(tqpair->sock);
1188 :
1189 0 : if (rc < 0 && errno == EAGAIN) {
1190 0 : spdk_thread_send_msg(spdk_get_thread(), tcp_sock_flush_cb, tqpair);
1191 0 : return;
1192 : }
1193 :
1194 0 : tqpair->pending_flush = false;
1195 0 : if (rc < 0) {
1196 0 : SPDK_ERRLOG("Could not write to socket: rc=%d, errno=%d\n", rc, errno);
1197 : }
1198 : }
1199 :
1200 : static void
1201 23 : _tcp_write_pdu(struct nvme_tcp_pdu *pdu)
1202 : {
1203 : int rc;
1204 23 : uint32_t mapped_length;
1205 23 : struct spdk_nvmf_tcp_qpair *tqpair = pdu->qpair;
1206 :
1207 46 : pdu->sock_req.iovcnt = nvme_tcp_build_iovs(pdu->iov, SPDK_COUNTOF(pdu->iov), pdu,
1208 23 : tqpair->host_hdgst_enable, tqpair->host_ddgst_enable, &mapped_length);
1209 23 : spdk_sock_writev_async(tqpair->sock, &pdu->sock_req);
1210 :
1211 23 : if (pdu->hdr.common.pdu_type == SPDK_NVME_TCP_PDU_TYPE_IC_RESP ||
1212 22 : pdu->hdr.common.pdu_type == SPDK_NVME_TCP_PDU_TYPE_C2H_TERM_REQ) {
1213 : /* Try to force the send immediately. */
1214 16 : rc = spdk_sock_flush(tqpair->sock);
1215 16 : if (rc > 0 && (uint32_t)rc == mapped_length) {
1216 0 : _pdu_write_done(pdu, 0);
1217 : } else {
1218 16 : SPDK_ERRLOG("Could not write %s to socket: rc=%d, errno=%d\n",
1219 : pdu->hdr.common.pdu_type == SPDK_NVME_TCP_PDU_TYPE_IC_RESP ?
1220 : "IC_RESP" : "TERM_REQ", rc, errno);
1221 16 : _pdu_write_done(pdu, rc >= 0 ? -EAGAIN : -errno);
1222 : }
1223 7 : } else if (spdk_interrupt_mode_is_enabled()) {
1224 : /* Async writes must be flushed */
1225 0 : if (!tqpair->pending_flush) {
1226 0 : tqpair->pending_flush = true;
1227 0 : spdk_thread_send_msg(spdk_get_thread(), tcp_sock_flush_cb, tqpair);
1228 : }
1229 : }
1230 23 : }
1231 :
1232 : static void
1233 0 : data_crc32_accel_done(void *cb_arg, int status)
1234 : {
1235 0 : struct nvme_tcp_pdu *pdu = cb_arg;
1236 :
1237 0 : if (spdk_unlikely(status)) {
1238 0 : SPDK_ERRLOG("Failed to compute the data digest for pdu =%p\n", pdu);
1239 0 : _pdu_write_done(pdu, status);
1240 0 : return;
1241 : }
1242 :
1243 0 : pdu->data_digest_crc32 ^= SPDK_CRC32C_XOR;
1244 0 : MAKE_DIGEST_WORD(pdu->data_digest, pdu->data_digest_crc32);
1245 :
1246 0 : _tcp_write_pdu(pdu);
1247 : }
1248 :
1249 : static void
1250 23 : pdu_data_crc32_compute(struct nvme_tcp_pdu *pdu)
1251 : {
1252 23 : struct spdk_nvmf_tcp_qpair *tqpair = pdu->qpair;
1253 23 : int rc = 0;
1254 :
1255 : /* Data Digest */
1256 23 : if (pdu->data_len > 0 && g_nvme_tcp_ddgst[pdu->hdr.common.pdu_type] && tqpair->host_ddgst_enable) {
1257 : /* Only support this limitated case for the first step */
1258 0 : if (spdk_likely(!pdu->dif_ctx && (pdu->data_len % SPDK_NVME_TCP_DIGEST_ALIGNMENT == 0)
1259 : && tqpair->group)) {
1260 0 : rc = spdk_accel_submit_crc32cv(tqpair->group->accel_channel, &pdu->data_digest_crc32, pdu->data_iov,
1261 : pdu->data_iovcnt, 0, data_crc32_accel_done, pdu);
1262 0 : if (spdk_likely(rc == 0)) {
1263 0 : return;
1264 : }
1265 : } else {
1266 0 : pdu->data_digest_crc32 = nvme_tcp_pdu_calc_data_digest(pdu);
1267 : }
1268 0 : data_crc32_accel_done(pdu, rc);
1269 : } else {
1270 23 : _tcp_write_pdu(pdu);
1271 : }
1272 : }
1273 :
1274 : static void
1275 23 : nvmf_tcp_qpair_write_pdu(struct spdk_nvmf_tcp_qpair *tqpair,
1276 : struct nvme_tcp_pdu *pdu,
1277 : nvme_tcp_qpair_xfer_complete_cb cb_fn,
1278 : void *cb_arg)
1279 : {
1280 : int hlen;
1281 : uint32_t crc32c;
1282 :
1283 23 : assert(tqpair->pdu_in_progress != pdu);
1284 :
1285 23 : hlen = pdu->hdr.common.hlen;
1286 23 : pdu->cb_fn = cb_fn;
1287 23 : pdu->cb_arg = cb_arg;
1288 :
1289 23 : pdu->iov[0].iov_base = &pdu->hdr.raw;
1290 23 : pdu->iov[0].iov_len = hlen;
1291 :
1292 : /* Header Digest */
1293 23 : if (g_nvme_tcp_hdgst[pdu->hdr.common.pdu_type] && tqpair->host_hdgst_enable) {
1294 1 : crc32c = nvme_tcp_pdu_calc_header_digest(pdu);
1295 1 : MAKE_DIGEST_WORD((uint8_t *)pdu->hdr.raw + hlen, crc32c);
1296 : }
1297 :
1298 : /* Data Digest */
1299 23 : pdu_data_crc32_compute(pdu);
1300 23 : }
1301 :
1302 : static void
1303 16 : nvmf_tcp_qpair_write_mgmt_pdu(struct spdk_nvmf_tcp_qpair *tqpair,
1304 : nvme_tcp_qpair_xfer_complete_cb cb_fn,
1305 : void *cb_arg)
1306 : {
1307 16 : struct nvme_tcp_pdu *pdu = tqpair->mgmt_pdu;
1308 :
1309 16 : pdu->sock_req.cb_fn = _mgmt_pdu_write_done;
1310 16 : pdu->sock_req.cb_arg = tqpair;
1311 :
1312 16 : nvmf_tcp_qpair_write_pdu(tqpair, pdu, cb_fn, cb_arg);
1313 16 : }
1314 :
1315 : static void
1316 7 : nvmf_tcp_qpair_write_req_pdu(struct spdk_nvmf_tcp_qpair *tqpair,
1317 : struct spdk_nvmf_tcp_req *tcp_req,
1318 : nvme_tcp_qpair_xfer_complete_cb cb_fn,
1319 : void *cb_arg)
1320 : {
1321 7 : struct nvme_tcp_pdu *pdu = tcp_req->pdu;
1322 :
1323 7 : pdu->sock_req.cb_fn = _req_pdu_write_done;
1324 7 : pdu->sock_req.cb_arg = tcp_req;
1325 :
1326 7 : assert(!tcp_req->pdu_in_use);
1327 7 : tcp_req->pdu_in_use = true;
1328 :
1329 7 : nvmf_tcp_qpair_write_pdu(tqpair, pdu, cb_fn, cb_arg);
1330 7 : }
1331 :
1332 : static int
1333 1 : nvmf_tcp_qpair_init_mem_resource(struct spdk_nvmf_tcp_qpair *tqpair)
1334 : {
1335 : uint32_t i;
1336 : struct spdk_nvmf_transport_opts *opts;
1337 : uint32_t in_capsule_data_size;
1338 :
1339 1 : opts = &tqpair->qpair.transport->opts;
1340 :
1341 1 : in_capsule_data_size = opts->in_capsule_data_size;
1342 1 : if (opts->dif_insert_or_strip) {
1343 0 : in_capsule_data_size = SPDK_BDEV_BUF_SIZE_WITH_MD(in_capsule_data_size);
1344 : }
1345 :
1346 1 : tqpair->resource_count = opts->max_queue_depth;
1347 :
1348 1 : tqpair->reqs = calloc(tqpair->resource_count, sizeof(*tqpair->reqs));
1349 1 : if (!tqpair->reqs) {
1350 0 : SPDK_ERRLOG("Unable to allocate reqs on tqpair=%p\n", tqpair);
1351 0 : return -1;
1352 : }
1353 :
1354 1 : if (in_capsule_data_size) {
1355 1 : tqpair->bufs = spdk_zmalloc(tqpair->resource_count * in_capsule_data_size, 0x1000,
1356 : NULL, SPDK_ENV_LCORE_ID_ANY,
1357 : SPDK_MALLOC_DMA);
1358 1 : if (!tqpair->bufs) {
1359 0 : SPDK_ERRLOG("Unable to allocate bufs on tqpair=%p.\n", tqpair);
1360 0 : return -1;
1361 : }
1362 : }
1363 : /* prepare memory space for receiving pdus and tcp_req */
1364 : /* Add additional 1 member, which will be used for mgmt_pdu owned by the tqpair */
1365 1 : tqpair->pdus = spdk_dma_zmalloc((2 * tqpair->resource_count + 1) * sizeof(*tqpair->pdus), 0x1000,
1366 : NULL);
1367 1 : if (!tqpair->pdus) {
1368 0 : SPDK_ERRLOG("Unable to allocate pdu pool on tqpair =%p.\n", tqpair);
1369 0 : return -1;
1370 : }
1371 :
1372 129 : for (i = 0; i < tqpair->resource_count; i++) {
1373 128 : struct spdk_nvmf_tcp_req *tcp_req = &tqpair->reqs[i];
1374 :
1375 128 : tcp_req->ttag = i + 1;
1376 128 : tcp_req->req.qpair = &tqpair->qpair;
1377 :
1378 128 : tcp_req->pdu = &tqpair->pdus[i];
1379 128 : tcp_req->pdu->qpair = tqpair;
1380 :
1381 : /* Set up memory to receive commands */
1382 128 : if (tqpair->bufs) {
1383 128 : tcp_req->buf = (void *)((uintptr_t)tqpair->bufs + (i * in_capsule_data_size));
1384 : }
1385 :
1386 : /* Set the cmdn and rsp */
1387 128 : tcp_req->req.rsp = (union nvmf_c2h_msg *)&tcp_req->rsp;
1388 128 : tcp_req->req.cmd = (union nvmf_h2c_msg *)&tcp_req->cmd;
1389 :
1390 128 : tcp_req->req.stripped_data = NULL;
1391 :
1392 : /* Initialize request state to FREE */
1393 128 : tcp_req->state = TCP_REQUEST_STATE_FREE;
1394 128 : TAILQ_INSERT_TAIL(&tqpair->tcp_req_free_queue, tcp_req, state_link);
1395 128 : tqpair->state_cntr[TCP_REQUEST_STATE_FREE]++;
1396 : }
1397 :
1398 129 : for (; i < 2 * tqpair->resource_count; i++) {
1399 128 : struct nvme_tcp_pdu *pdu = &tqpair->pdus[i];
1400 :
1401 128 : pdu->qpair = tqpair;
1402 128 : SLIST_INSERT_HEAD(&tqpair->tcp_pdu_free_queue, pdu, slist);
1403 : }
1404 :
1405 1 : tqpair->mgmt_pdu = &tqpair->pdus[i];
1406 1 : tqpair->mgmt_pdu->qpair = tqpair;
1407 1 : tqpair->pdu_in_progress = SLIST_FIRST(&tqpair->tcp_pdu_free_queue);
1408 1 : SLIST_REMOVE_HEAD(&tqpair->tcp_pdu_free_queue, slist);
1409 1 : tqpair->tcp_pdu_working_count = 1;
1410 :
1411 1 : tqpair->recv_buf_size = (in_capsule_data_size + sizeof(struct spdk_nvme_tcp_cmd) + 2 *
1412 : SPDK_NVME_TCP_DIGEST_LEN) * SPDK_NVMF_TCP_RECV_BUF_SIZE_FACTOR;
1413 :
1414 1 : return 0;
1415 : }
1416 :
1417 : static int
1418 1 : nvmf_tcp_qpair_init(struct spdk_nvmf_qpair *qpair)
1419 : {
1420 : struct spdk_nvmf_tcp_qpair *tqpair;
1421 :
1422 1 : tqpair = SPDK_CONTAINEROF(qpair, struct spdk_nvmf_tcp_qpair, qpair);
1423 :
1424 1 : SPDK_DEBUGLOG(nvmf_tcp, "New TCP Connection: %p\n", qpair);
1425 :
1426 1 : spdk_trace_record(TRACE_TCP_QP_CREATE, tqpair->qpair.trace_id, 0, 0);
1427 :
1428 : /* Initialise request state queues of the qpair */
1429 1 : TAILQ_INIT(&tqpair->tcp_req_free_queue);
1430 1 : TAILQ_INIT(&tqpair->tcp_req_working_queue);
1431 1 : SLIST_INIT(&tqpair->tcp_pdu_free_queue);
1432 1 : tqpair->qpair.queue_depth = 0;
1433 :
1434 1 : tqpair->host_hdgst_enable = true;
1435 1 : tqpair->host_ddgst_enable = true;
1436 :
1437 1 : return 0;
1438 : }
1439 :
1440 : static int
1441 0 : nvmf_tcp_qpair_sock_init(struct spdk_nvmf_tcp_qpair *tqpair)
1442 : {
1443 0 : char saddr[32], caddr[32];
1444 0 : uint16_t sport, cport;
1445 0 : char owner[256];
1446 : int rc;
1447 :
1448 0 : rc = spdk_sock_getaddr(tqpair->sock, saddr, sizeof(saddr), &sport,
1449 : caddr, sizeof(caddr), &cport);
1450 0 : if (rc != 0) {
1451 0 : SPDK_ERRLOG("spdk_sock_getaddr() failed\n");
1452 0 : return rc;
1453 : }
1454 0 : snprintf(owner, sizeof(owner), "%s:%d", caddr, cport);
1455 0 : tqpair->qpair.trace_id = spdk_trace_register_owner(OWNER_TYPE_NVMF_TCP, owner);
1456 0 : spdk_trace_record(TRACE_TCP_QP_SOCK_INIT, tqpair->qpair.trace_id, 0, 0);
1457 :
1458 : /* set low water mark */
1459 0 : rc = spdk_sock_set_recvlowat(tqpair->sock, 1);
1460 0 : if (rc != 0) {
1461 0 : SPDK_ERRLOG("spdk_sock_set_recvlowat() failed\n");
1462 0 : return rc;
1463 : }
1464 :
1465 0 : return 0;
1466 : }
1467 :
1468 : static void
1469 0 : nvmf_tcp_handle_connect(struct spdk_nvmf_tcp_port *port, struct spdk_sock *sock)
1470 : {
1471 : struct spdk_nvmf_tcp_qpair *tqpair;
1472 : int rc;
1473 :
1474 0 : SPDK_DEBUGLOG(nvmf_tcp, "New connection accepted on %s port %s\n",
1475 : port->trid->traddr, port->trid->trsvcid);
1476 :
1477 0 : tqpair = calloc(1, sizeof(struct spdk_nvmf_tcp_qpair));
1478 0 : if (tqpair == NULL) {
1479 0 : SPDK_ERRLOG("Could not allocate new connection.\n");
1480 0 : spdk_sock_close(&sock);
1481 0 : return;
1482 : }
1483 :
1484 0 : tqpair->sock = sock;
1485 0 : tqpair->state_cntr[TCP_REQUEST_STATE_FREE] = 0;
1486 0 : tqpair->port = port;
1487 0 : tqpair->qpair.transport = port->transport;
1488 0 : tqpair->qpair.numa.id_valid = 1;
1489 0 : tqpair->qpair.numa.id = spdk_sock_get_numa_id(sock);
1490 :
1491 0 : rc = spdk_sock_getaddr(tqpair->sock, tqpair->target_addr,
1492 : sizeof(tqpair->target_addr), &tqpair->target_port,
1493 0 : tqpair->initiator_addr, sizeof(tqpair->initiator_addr),
1494 : &tqpair->initiator_port);
1495 0 : if (rc < 0) {
1496 0 : SPDK_ERRLOG("spdk_sock_getaddr() failed of tqpair=%p\n", tqpair);
1497 0 : nvmf_tcp_qpair_destroy(tqpair);
1498 0 : return;
1499 : }
1500 :
1501 0 : spdk_nvmf_tgt_new_qpair(port->transport->tgt, &tqpair->qpair);
1502 : }
1503 :
1504 : static uint32_t
1505 0 : nvmf_tcp_port_accept(struct spdk_nvmf_tcp_port *port)
1506 : {
1507 : struct spdk_sock *sock;
1508 0 : uint32_t count = 0;
1509 : int i;
1510 :
1511 0 : for (i = 0; i < NVMF_TCP_MAX_ACCEPT_SOCK_ONE_TIME; i++) {
1512 0 : sock = spdk_sock_accept(port->listen_sock);
1513 0 : if (sock == NULL) {
1514 0 : break;
1515 : }
1516 0 : count++;
1517 0 : nvmf_tcp_handle_connect(port, sock);
1518 : }
1519 :
1520 0 : return count;
1521 : }
1522 :
1523 : static int
1524 0 : nvmf_tcp_accept(void *ctx)
1525 : {
1526 0 : struct spdk_nvmf_transport *transport = ctx;
1527 : struct spdk_nvmf_tcp_transport *ttransport;
1528 : int count;
1529 :
1530 0 : ttransport = SPDK_CONTAINEROF(transport, struct spdk_nvmf_tcp_transport, transport);
1531 :
1532 0 : count = spdk_sock_group_poll(ttransport->listen_sock_group);
1533 0 : if (count < 0) {
1534 0 : SPDK_ERRLOG("Fail in TCP listen socket group poll\n");
1535 : }
1536 :
1537 0 : return count != 0 ? SPDK_POLLER_BUSY : SPDK_POLLER_IDLE;
1538 : }
1539 :
1540 : static void
1541 0 : nvmf_tcp_accept_cb(void *ctx, struct spdk_sock_group *group, struct spdk_sock *sock)
1542 : {
1543 0 : struct spdk_nvmf_tcp_port *port = ctx;
1544 :
1545 0 : nvmf_tcp_port_accept(port);
1546 0 : }
1547 :
1548 : static void
1549 0 : nvmf_tcp_discover(struct spdk_nvmf_transport *transport,
1550 : struct spdk_nvme_transport_id *trid,
1551 : struct spdk_nvmf_discovery_log_page_entry *entry)
1552 : {
1553 : struct spdk_nvmf_tcp_port *port;
1554 : struct spdk_nvmf_tcp_transport *ttransport;
1555 :
1556 0 : entry->trtype = SPDK_NVMF_TRTYPE_TCP;
1557 0 : entry->adrfam = trid->adrfam;
1558 :
1559 0 : spdk_strcpy_pad(entry->trsvcid, trid->trsvcid, sizeof(entry->trsvcid), ' ');
1560 0 : spdk_strcpy_pad(entry->traddr, trid->traddr, sizeof(entry->traddr), ' ');
1561 :
1562 0 : ttransport = SPDK_CONTAINEROF(transport, struct spdk_nvmf_tcp_transport, transport);
1563 0 : port = nvmf_tcp_find_port(ttransport, trid);
1564 :
1565 0 : assert(port != NULL);
1566 :
1567 0 : if (strcmp(spdk_sock_get_impl_name(port->listen_sock), "ssl") == 0) {
1568 0 : entry->treq.secure_channel = SPDK_NVMF_TREQ_SECURE_CHANNEL_REQUIRED;
1569 0 : entry->tsas.tcp.sectype = SPDK_NVME_TCP_SECURITY_TLS_1_3;
1570 : } else {
1571 0 : entry->treq.secure_channel = SPDK_NVMF_TREQ_SECURE_CHANNEL_NOT_REQUIRED;
1572 0 : entry->tsas.tcp.sectype = SPDK_NVME_TCP_SECURITY_NONE;
1573 : }
1574 0 : }
1575 :
1576 : static struct spdk_nvmf_tcp_control_msg_list *
1577 1 : nvmf_tcp_control_msg_list_create(uint16_t num_messages)
1578 : {
1579 : struct spdk_nvmf_tcp_control_msg_list *list;
1580 : struct spdk_nvmf_tcp_control_msg *msg;
1581 : uint16_t i;
1582 :
1583 1 : list = calloc(1, sizeof(*list));
1584 1 : if (!list) {
1585 0 : SPDK_ERRLOG("Failed to allocate memory for list structure\n");
1586 0 : return NULL;
1587 : }
1588 :
1589 1 : list->msg_buf = spdk_zmalloc(num_messages * SPDK_NVME_TCP_IN_CAPSULE_DATA_MAX_SIZE,
1590 : NVMF_DATA_BUFFER_ALIGNMENT, NULL, SPDK_ENV_NUMA_ID_ANY, SPDK_MALLOC_DMA);
1591 1 : if (!list->msg_buf) {
1592 0 : SPDK_ERRLOG("Failed to allocate memory for control message buffers\n");
1593 0 : free(list);
1594 0 : return NULL;
1595 : }
1596 :
1597 1 : STAILQ_INIT(&list->free_msgs);
1598 1 : STAILQ_INIT(&list->waiting_for_msg_reqs);
1599 :
1600 33 : for (i = 0; i < num_messages; i++) {
1601 32 : msg = (struct spdk_nvmf_tcp_control_msg *)((char *)list->msg_buf + i *
1602 : SPDK_NVME_TCP_IN_CAPSULE_DATA_MAX_SIZE);
1603 32 : STAILQ_INSERT_TAIL(&list->free_msgs, msg, link);
1604 : }
1605 :
1606 1 : return list;
1607 : }
1608 :
1609 : static void
1610 1 : nvmf_tcp_control_msg_list_free(struct spdk_nvmf_tcp_control_msg_list *list)
1611 : {
1612 1 : if (!list) {
1613 0 : return;
1614 : }
1615 :
1616 1 : spdk_free(list->msg_buf);
1617 1 : free(list);
1618 : }
1619 :
1620 : static int nvmf_tcp_poll_group_poll(struct spdk_nvmf_transport_poll_group *group);
1621 :
1622 : static int
1623 0 : nvmf_tcp_poll_group_intr(void *ctx)
1624 : {
1625 0 : struct spdk_nvmf_transport_poll_group *group = ctx;
1626 0 : int ret = 0;
1627 :
1628 0 : ret = nvmf_tcp_poll_group_poll(group);
1629 :
1630 0 : return ret != 0 ? SPDK_POLLER_BUSY : SPDK_POLLER_IDLE;
1631 : }
1632 :
1633 : static struct spdk_nvmf_transport_poll_group *
1634 1 : nvmf_tcp_poll_group_create(struct spdk_nvmf_transport *transport,
1635 : struct spdk_nvmf_poll_group *group)
1636 : {
1637 : struct spdk_nvmf_tcp_transport *ttransport;
1638 : struct spdk_nvmf_tcp_poll_group *tgroup;
1639 : int rc;
1640 :
1641 1 : tgroup = calloc(1, sizeof(*tgroup));
1642 1 : if (!tgroup) {
1643 0 : return NULL;
1644 : }
1645 :
1646 1 : tgroup->sock_group = spdk_sock_group_create(&tgroup->group);
1647 1 : if (!tgroup->sock_group) {
1648 0 : goto cleanup;
1649 : }
1650 :
1651 1 : TAILQ_INIT(&tgroup->qpairs);
1652 1 : TAILQ_INIT(&tgroup->await_req);
1653 :
1654 1 : ttransport = SPDK_CONTAINEROF(transport, struct spdk_nvmf_tcp_transport, transport);
1655 :
1656 1 : if (transport->opts.in_capsule_data_size < SPDK_NVME_TCP_IN_CAPSULE_DATA_MAX_SIZE) {
1657 1 : SPDK_DEBUGLOG(nvmf_tcp, "ICD %u is less than min required for admin/fabric commands (%u). "
1658 : "Creating control messages list\n", transport->opts.in_capsule_data_size,
1659 : SPDK_NVME_TCP_IN_CAPSULE_DATA_MAX_SIZE);
1660 1 : tgroup->control_msg_list = nvmf_tcp_control_msg_list_create(ttransport->tcp_opts.control_msg_num);
1661 1 : if (!tgroup->control_msg_list) {
1662 0 : goto cleanup;
1663 : }
1664 : }
1665 :
1666 1 : tgroup->accel_channel = spdk_accel_get_io_channel();
1667 1 : if (spdk_unlikely(!tgroup->accel_channel)) {
1668 0 : SPDK_ERRLOG("Cannot create accel_channel for tgroup=%p\n", tgroup);
1669 0 : goto cleanup;
1670 : }
1671 :
1672 1 : TAILQ_INSERT_TAIL(&ttransport->poll_groups, tgroup, link);
1673 1 : if (ttransport->next_pg == NULL) {
1674 1 : ttransport->next_pg = tgroup;
1675 : }
1676 :
1677 1 : if (spdk_interrupt_mode_is_enabled()) {
1678 0 : rc = SPDK_SOCK_GROUP_REGISTER_INTERRUPT(tgroup->sock_group,
1679 : SPDK_INTERRUPT_EVENT_IN | SPDK_INTERRUPT_EVENT_OUT, nvmf_tcp_poll_group_intr, &tgroup->group);
1680 0 : if (rc != 0) {
1681 0 : SPDK_ERRLOG("Failed to register interrupt for sock group\n");
1682 0 : goto cleanup;
1683 : }
1684 : }
1685 :
1686 1 : return &tgroup->group;
1687 :
1688 0 : cleanup:
1689 0 : nvmf_tcp_poll_group_destroy(&tgroup->group);
1690 0 : return NULL;
1691 : }
1692 :
1693 : static struct spdk_nvmf_transport_poll_group *
1694 0 : nvmf_tcp_get_optimal_poll_group(struct spdk_nvmf_qpair *qpair)
1695 : {
1696 : struct spdk_nvmf_tcp_transport *ttransport;
1697 : struct spdk_nvmf_tcp_poll_group **pg;
1698 : struct spdk_nvmf_tcp_qpair *tqpair;
1699 0 : struct spdk_sock_group *group = NULL, *hint = NULL;
1700 : int rc;
1701 :
1702 0 : ttransport = SPDK_CONTAINEROF(qpair->transport, struct spdk_nvmf_tcp_transport, transport);
1703 :
1704 0 : if (TAILQ_EMPTY(&ttransport->poll_groups)) {
1705 0 : return NULL;
1706 : }
1707 :
1708 0 : pg = &ttransport->next_pg;
1709 0 : assert(*pg != NULL);
1710 0 : hint = (*pg)->sock_group;
1711 :
1712 0 : tqpair = SPDK_CONTAINEROF(qpair, struct spdk_nvmf_tcp_qpair, qpair);
1713 0 : rc = spdk_sock_get_optimal_sock_group(tqpair->sock, &group, hint);
1714 0 : if (rc != 0) {
1715 0 : return NULL;
1716 0 : } else if (group != NULL) {
1717 : /* Optimal poll group was found */
1718 0 : return spdk_sock_group_get_ctx(group);
1719 : }
1720 :
1721 : /* The hint was used for optimal poll group, advance next_pg. */
1722 0 : *pg = TAILQ_NEXT(*pg, link);
1723 0 : if (*pg == NULL) {
1724 0 : *pg = TAILQ_FIRST(&ttransport->poll_groups);
1725 : }
1726 :
1727 0 : return spdk_sock_group_get_ctx(hint);
1728 : }
1729 :
1730 : static void
1731 1 : nvmf_tcp_poll_group_destroy(struct spdk_nvmf_transport_poll_group *group)
1732 : {
1733 : struct spdk_nvmf_tcp_poll_group *tgroup, *next_tgroup;
1734 : struct spdk_nvmf_tcp_transport *ttransport;
1735 :
1736 1 : tgroup = SPDK_CONTAINEROF(group, struct spdk_nvmf_tcp_poll_group, group);
1737 1 : spdk_sock_group_unregister_interrupt(tgroup->sock_group);
1738 1 : spdk_sock_group_close(&tgroup->sock_group);
1739 1 : if (tgroup->control_msg_list) {
1740 1 : nvmf_tcp_control_msg_list_free(tgroup->control_msg_list);
1741 : }
1742 :
1743 1 : if (tgroup->accel_channel) {
1744 1 : spdk_put_io_channel(tgroup->accel_channel);
1745 : }
1746 :
1747 1 : if (tgroup->group.transport == NULL) {
1748 : /* Transport can be NULL when nvmf_tcp_poll_group_create()
1749 : * calls this function directly in a failure path. */
1750 0 : free(tgroup);
1751 0 : return;
1752 : }
1753 :
1754 1 : ttransport = SPDK_CONTAINEROF(tgroup->group.transport, struct spdk_nvmf_tcp_transport, transport);
1755 :
1756 1 : next_tgroup = TAILQ_NEXT(tgroup, link);
1757 1 : TAILQ_REMOVE(&ttransport->poll_groups, tgroup, link);
1758 1 : if (next_tgroup == NULL) {
1759 1 : next_tgroup = TAILQ_FIRST(&ttransport->poll_groups);
1760 : }
1761 1 : if (ttransport->next_pg == tgroup) {
1762 1 : ttransport->next_pg = next_tgroup;
1763 : }
1764 :
1765 1 : free(tgroup);
1766 : }
1767 :
1768 : static void
1769 37 : nvmf_tcp_qpair_set_recv_state(struct spdk_nvmf_tcp_qpair *tqpair,
1770 : enum nvme_tcp_pdu_recv_state state)
1771 : {
1772 37 : if (tqpair->recv_state == state) {
1773 19 : SPDK_ERRLOG("The recv state of tqpair=%p is same with the state(%d) to be set\n",
1774 : tqpair, state);
1775 19 : return;
1776 : }
1777 :
1778 18 : if (spdk_unlikely(state == NVME_TCP_PDU_RECV_STATE_QUIESCING)) {
1779 13 : if (tqpair->recv_state == NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_CH && tqpair->pdu_in_progress) {
1780 10 : SLIST_INSERT_HEAD(&tqpair->tcp_pdu_free_queue, tqpair->pdu_in_progress, slist);
1781 10 : tqpair->tcp_pdu_working_count--;
1782 : }
1783 : }
1784 :
1785 18 : if (spdk_unlikely(state == NVME_TCP_PDU_RECV_STATE_ERROR)) {
1786 0 : assert(tqpair->tcp_pdu_working_count == 0);
1787 : }
1788 :
1789 18 : if (tqpair->recv_state == NVME_TCP_PDU_RECV_STATE_AWAIT_REQ) {
1790 : /* When leaving the await req state, move the qpair to the main list */
1791 0 : TAILQ_REMOVE(&tqpair->group->await_req, tqpair, link);
1792 0 : TAILQ_INSERT_TAIL(&tqpair->group->qpairs, tqpair, link);
1793 18 : } else if (state == NVME_TCP_PDU_RECV_STATE_AWAIT_REQ) {
1794 0 : TAILQ_REMOVE(&tqpair->group->qpairs, tqpair, link);
1795 0 : TAILQ_INSERT_TAIL(&tqpair->group->await_req, tqpair, link);
1796 : }
1797 :
1798 18 : SPDK_DEBUGLOG(nvmf_tcp, "tqpair(%p) recv state=%d\n", tqpair, state);
1799 18 : tqpair->recv_state = state;
1800 :
1801 18 : spdk_trace_record(TRACE_TCP_QP_RCV_STATE_CHANGE, tqpair->qpair.trace_id, 0, 0,
1802 : (uint64_t)tqpair->recv_state);
1803 : }
1804 :
1805 : static int
1806 0 : nvmf_tcp_qpair_handle_timeout(void *ctx)
1807 : {
1808 0 : struct spdk_nvmf_tcp_qpair *tqpair = ctx;
1809 :
1810 0 : assert(tqpair->recv_state == NVME_TCP_PDU_RECV_STATE_ERROR);
1811 :
1812 0 : SPDK_ERRLOG("No pdu coming for tqpair=%p within %d seconds\n", tqpair,
1813 : SPDK_NVME_TCP_QPAIR_EXIT_TIMEOUT);
1814 :
1815 0 : nvmf_tcp_qpair_disconnect(tqpair);
1816 0 : return SPDK_POLLER_BUSY;
1817 : }
1818 :
1819 : static void
1820 0 : nvmf_tcp_send_c2h_term_req_complete(void *cb_arg)
1821 : {
1822 0 : struct spdk_nvmf_tcp_qpair *tqpair = (struct spdk_nvmf_tcp_qpair *)cb_arg;
1823 :
1824 0 : if (!tqpair->timeout_poller) {
1825 0 : tqpair->timeout_poller = SPDK_POLLER_REGISTER(nvmf_tcp_qpair_handle_timeout, tqpair,
1826 : SPDK_NVME_TCP_QPAIR_EXIT_TIMEOUT * 1000000);
1827 : }
1828 0 : }
1829 :
1830 : static void
1831 15 : nvmf_tcp_send_c2h_term_req(struct spdk_nvmf_tcp_qpair *tqpair, struct nvme_tcp_pdu *pdu,
1832 : enum spdk_nvme_tcp_term_req_fes fes, uint32_t error_offset)
1833 : {
1834 : struct nvme_tcp_pdu *rsp_pdu;
1835 : struct spdk_nvme_tcp_term_req_hdr *c2h_term_req;
1836 15 : uint32_t c2h_term_req_hdr_len = sizeof(*c2h_term_req);
1837 : uint32_t copy_len;
1838 :
1839 15 : rsp_pdu = tqpair->mgmt_pdu;
1840 :
1841 15 : c2h_term_req = &rsp_pdu->hdr.term_req;
1842 15 : c2h_term_req->common.pdu_type = SPDK_NVME_TCP_PDU_TYPE_C2H_TERM_REQ;
1843 15 : c2h_term_req->common.hlen = c2h_term_req_hdr_len;
1844 15 : c2h_term_req->fes = fes;
1845 :
1846 15 : if ((fes == SPDK_NVME_TCP_TERM_REQ_FES_INVALID_HEADER_FIELD) ||
1847 : (fes == SPDK_NVME_TCP_TERM_REQ_FES_INVALID_DATA_UNSUPPORTED_PARAMETER)) {
1848 12 : DSET32(&c2h_term_req->fei, error_offset);
1849 : }
1850 :
1851 15 : copy_len = spdk_min(pdu->hdr.common.hlen, SPDK_NVME_TCP_TERM_REQ_ERROR_DATA_MAX_SIZE);
1852 :
1853 : /* Copy the error info into the buffer */
1854 15 : memcpy((uint8_t *)rsp_pdu->hdr.raw + c2h_term_req_hdr_len, pdu->hdr.raw, copy_len);
1855 15 : nvme_tcp_pdu_set_data(rsp_pdu, (uint8_t *)rsp_pdu->hdr.raw + c2h_term_req_hdr_len, copy_len);
1856 :
1857 : /* Contain the header of the wrong received pdu */
1858 15 : c2h_term_req->common.plen = c2h_term_req->common.hlen + copy_len;
1859 15 : tqpair->wait_terminate = true;
1860 15 : nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_QUIESCING);
1861 15 : nvmf_tcp_qpair_write_mgmt_pdu(tqpair, nvmf_tcp_send_c2h_term_req_complete, tqpair);
1862 15 : }
1863 :
1864 : static void
1865 1 : nvmf_tcp_capsule_cmd_hdr_handle(struct spdk_nvmf_tcp_transport *ttransport,
1866 : struct spdk_nvmf_tcp_qpair *tqpair,
1867 : struct nvme_tcp_pdu *pdu)
1868 : {
1869 : struct spdk_nvmf_tcp_req *tcp_req;
1870 :
1871 1 : assert(pdu->psh_valid_bytes == pdu->psh_len);
1872 1 : assert(pdu->hdr.common.pdu_type == SPDK_NVME_TCP_PDU_TYPE_CAPSULE_CMD);
1873 :
1874 1 : tcp_req = nvmf_tcp_req_get(tqpair);
1875 1 : if (!tcp_req) {
1876 : /* Directly return and make the allocation retry again. This can happen if we're
1877 : * using asynchronous writes to send the response to the host or when releasing
1878 : * zero-copy buffers after a response has been sent. In both cases, the host might
1879 : * receive the response before we've finished processing the request and is free to
1880 : * send another one.
1881 : */
1882 0 : if (tqpair->state_cntr[TCP_REQUEST_STATE_TRANSFERRING_CONTROLLER_TO_HOST] > 0 ||
1883 0 : tqpair->state_cntr[TCP_REQUEST_STATE_AWAITING_ZCOPY_RELEASE] > 0) {
1884 0 : return;
1885 : }
1886 :
1887 : /* The host sent more commands than the maximum queue depth. */
1888 0 : SPDK_ERRLOG("Cannot allocate tcp_req on tqpair=%p\n", tqpair);
1889 0 : nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_QUIESCING);
1890 0 : return;
1891 : }
1892 :
1893 1 : pdu->req = tcp_req;
1894 1 : assert(tcp_req->state == TCP_REQUEST_STATE_NEW);
1895 1 : nvmf_tcp_req_process(ttransport, tcp_req);
1896 : }
1897 :
1898 : static void
1899 0 : nvmf_tcp_capsule_cmd_payload_handle(struct spdk_nvmf_tcp_transport *ttransport,
1900 : struct spdk_nvmf_tcp_qpair *tqpair,
1901 : struct nvme_tcp_pdu *pdu)
1902 : {
1903 : struct spdk_nvmf_tcp_req *tcp_req;
1904 : struct spdk_nvme_tcp_cmd *capsule_cmd;
1905 0 : uint32_t error_offset = 0;
1906 : enum spdk_nvme_tcp_term_req_fes fes;
1907 : struct spdk_nvme_cpl *rsp;
1908 :
1909 0 : capsule_cmd = &pdu->hdr.capsule_cmd;
1910 0 : tcp_req = pdu->req;
1911 0 : assert(tcp_req != NULL);
1912 :
1913 : /* Zero-copy requests don't support ICD */
1914 0 : assert(!spdk_nvmf_request_using_zcopy(&tcp_req->req));
1915 :
1916 0 : if (capsule_cmd->common.pdo > SPDK_NVME_TCP_PDU_PDO_MAX_OFFSET) {
1917 0 : SPDK_ERRLOG("Expected ICReq capsule_cmd pdu offset <= %d, got %c\n",
1918 : SPDK_NVME_TCP_PDU_PDO_MAX_OFFSET, capsule_cmd->common.pdo);
1919 0 : fes = SPDK_NVME_TCP_TERM_REQ_FES_INVALID_HEADER_FIELD;
1920 0 : error_offset = offsetof(struct spdk_nvme_tcp_common_pdu_hdr, pdo);
1921 0 : goto err;
1922 : }
1923 :
1924 0 : rsp = &tcp_req->req.rsp->nvme_cpl;
1925 0 : if (spdk_unlikely(rsp->status.sc == SPDK_NVME_SC_COMMAND_TRANSIENT_TRANSPORT_ERROR)) {
1926 0 : nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_READY_TO_COMPLETE);
1927 : } else {
1928 0 : nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_READY_TO_EXECUTE);
1929 : }
1930 :
1931 0 : nvmf_tcp_req_process(ttransport, tcp_req);
1932 :
1933 0 : return;
1934 0 : err:
1935 0 : nvmf_tcp_send_c2h_term_req(tqpair, pdu, fes, error_offset);
1936 : }
1937 :
1938 : static void
1939 1 : nvmf_tcp_h2c_data_hdr_handle(struct spdk_nvmf_tcp_transport *ttransport,
1940 : struct spdk_nvmf_tcp_qpair *tqpair,
1941 : struct nvme_tcp_pdu *pdu)
1942 : {
1943 : struct spdk_nvmf_tcp_req *tcp_req;
1944 1 : uint32_t error_offset = 0;
1945 1 : enum spdk_nvme_tcp_term_req_fes fes = 0;
1946 : struct spdk_nvme_tcp_h2c_data_hdr *h2c_data;
1947 :
1948 1 : h2c_data = &pdu->hdr.h2c_data;
1949 :
1950 1 : SPDK_DEBUGLOG(nvmf_tcp, "tqpair=%p, r2t_info: datao=%u, datal=%u, cccid=%u, ttag=%u\n",
1951 : tqpair, h2c_data->datao, h2c_data->datal, h2c_data->cccid, h2c_data->ttag);
1952 :
1953 1 : if (h2c_data->ttag > tqpair->resource_count) {
1954 0 : SPDK_DEBUGLOG(nvmf_tcp, "ttag %u is larger than allowed %u.\n", h2c_data->ttag,
1955 : tqpair->resource_count);
1956 0 : fes = SPDK_NVME_TCP_TERM_REQ_FES_PDU_SEQUENCE_ERROR;
1957 0 : error_offset = offsetof(struct spdk_nvme_tcp_h2c_data_hdr, ttag);
1958 0 : goto err;
1959 : }
1960 :
1961 1 : tcp_req = &tqpair->reqs[h2c_data->ttag - 1];
1962 :
1963 1 : if (spdk_unlikely(tcp_req->state != TCP_REQUEST_STATE_TRANSFERRING_HOST_TO_CONTROLLER &&
1964 : tcp_req->state != TCP_REQUEST_STATE_AWAITING_R2T_ACK)) {
1965 0 : SPDK_DEBUGLOG(nvmf_tcp, "tcp_req(%p), tqpair=%p, has error state in %d\n", tcp_req, tqpair,
1966 : tcp_req->state);
1967 0 : fes = SPDK_NVME_TCP_TERM_REQ_FES_INVALID_HEADER_FIELD;
1968 0 : error_offset = offsetof(struct spdk_nvme_tcp_h2c_data_hdr, ttag);
1969 0 : goto err;
1970 : }
1971 :
1972 1 : if (spdk_unlikely(tcp_req->req.cmd->nvme_cmd.cid != h2c_data->cccid)) {
1973 0 : SPDK_DEBUGLOG(nvmf_tcp, "tcp_req(%p), tqpair=%p, expected %u but %u for cccid.\n", tcp_req, tqpair,
1974 : tcp_req->req.cmd->nvme_cmd.cid, h2c_data->cccid);
1975 0 : fes = SPDK_NVME_TCP_TERM_REQ_FES_PDU_SEQUENCE_ERROR;
1976 0 : error_offset = offsetof(struct spdk_nvme_tcp_h2c_data_hdr, cccid);
1977 0 : goto err;
1978 : }
1979 :
1980 1 : if (tcp_req->h2c_offset != h2c_data->datao) {
1981 0 : SPDK_DEBUGLOG(nvmf_tcp,
1982 : "tcp_req(%p), tqpair=%p, expected data offset %u, but data offset is %u\n",
1983 : tcp_req, tqpair, tcp_req->h2c_offset, h2c_data->datao);
1984 0 : fes = SPDK_NVME_TCP_TERM_REQ_FES_DATA_TRANSFER_OUT_OF_RANGE;
1985 0 : goto err;
1986 : }
1987 :
1988 1 : if ((h2c_data->datao + h2c_data->datal) > tcp_req->req.length) {
1989 0 : SPDK_DEBUGLOG(nvmf_tcp,
1990 : "tcp_req(%p), tqpair=%p, (datao=%u + datal=%u) exceeds requested length=%u\n",
1991 : tcp_req, tqpair, h2c_data->datao, h2c_data->datal, tcp_req->req.length);
1992 0 : fes = SPDK_NVME_TCP_TERM_REQ_FES_DATA_TRANSFER_OUT_OF_RANGE;
1993 0 : goto err;
1994 : }
1995 :
1996 1 : pdu->req = tcp_req;
1997 :
1998 1 : if (spdk_unlikely(tcp_req->req.dif_enabled)) {
1999 0 : pdu->dif_ctx = &tcp_req->req.dif.dif_ctx;
2000 : }
2001 :
2002 1 : nvme_tcp_pdu_set_data_buf(pdu, tcp_req->req.iov, tcp_req->req.iovcnt,
2003 : h2c_data->datao, h2c_data->datal);
2004 1 : nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_PAYLOAD);
2005 1 : return;
2006 :
2007 0 : err:
2008 0 : nvmf_tcp_send_c2h_term_req(tqpair, pdu, fes, error_offset);
2009 : }
2010 :
2011 : static void
2012 3 : nvmf_tcp_send_capsule_resp_pdu(struct spdk_nvmf_tcp_req *tcp_req,
2013 : struct spdk_nvmf_tcp_qpair *tqpair)
2014 : {
2015 : struct nvme_tcp_pdu *rsp_pdu;
2016 : struct spdk_nvme_tcp_rsp *capsule_resp;
2017 :
2018 3 : SPDK_DEBUGLOG(nvmf_tcp, "enter, tqpair=%p\n", tqpair);
2019 :
2020 3 : rsp_pdu = nvmf_tcp_req_pdu_init(tcp_req);
2021 3 : assert(rsp_pdu != NULL);
2022 :
2023 3 : capsule_resp = &rsp_pdu->hdr.capsule_resp;
2024 3 : capsule_resp->common.pdu_type = SPDK_NVME_TCP_PDU_TYPE_CAPSULE_RESP;
2025 3 : capsule_resp->common.plen = capsule_resp->common.hlen = sizeof(*capsule_resp);
2026 3 : capsule_resp->rccqe = tcp_req->req.rsp->nvme_cpl;
2027 3 : if (tqpair->host_hdgst_enable) {
2028 1 : capsule_resp->common.flags |= SPDK_NVME_TCP_CH_FLAGS_HDGSTF;
2029 1 : capsule_resp->common.plen += SPDK_NVME_TCP_DIGEST_LEN;
2030 : }
2031 :
2032 3 : nvmf_tcp_qpair_write_req_pdu(tqpair, tcp_req, nvmf_tcp_request_free, tcp_req);
2033 3 : }
2034 :
2035 : static void
2036 0 : nvmf_tcp_pdu_c2h_data_complete(void *cb_arg)
2037 : {
2038 0 : struct spdk_nvmf_tcp_req *tcp_req = cb_arg;
2039 0 : struct spdk_nvmf_tcp_qpair *tqpair = SPDK_CONTAINEROF(tcp_req->req.qpair,
2040 : struct spdk_nvmf_tcp_qpair, qpair);
2041 :
2042 0 : assert(tqpair != NULL);
2043 :
2044 0 : if (spdk_unlikely(tcp_req->pdu->rw_offset < tcp_req->req.length)) {
2045 0 : SPDK_DEBUGLOG(nvmf_tcp, "sending another C2H part, offset %u length %u\n", tcp_req->pdu->rw_offset,
2046 : tcp_req->req.length);
2047 0 : _nvmf_tcp_send_c2h_data(tqpair, tcp_req);
2048 0 : return;
2049 : }
2050 :
2051 0 : if (tcp_req->pdu->hdr.c2h_data.common.flags & SPDK_NVME_TCP_C2H_DATA_FLAGS_SUCCESS) {
2052 0 : nvmf_tcp_request_free(tcp_req);
2053 : } else {
2054 0 : nvmf_tcp_send_capsule_resp_pdu(tcp_req, tqpair);
2055 : }
2056 : }
2057 :
2058 : static void
2059 0 : nvmf_tcp_r2t_complete(void *cb_arg)
2060 : {
2061 0 : struct spdk_nvmf_tcp_req *tcp_req = cb_arg;
2062 : struct spdk_nvmf_tcp_transport *ttransport;
2063 :
2064 0 : ttransport = SPDK_CONTAINEROF(tcp_req->req.qpair->transport,
2065 : struct spdk_nvmf_tcp_transport, transport);
2066 :
2067 0 : nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_TRANSFERRING_HOST_TO_CONTROLLER);
2068 :
2069 0 : if (tcp_req->h2c_offset == tcp_req->req.length) {
2070 0 : nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_READY_TO_EXECUTE);
2071 0 : nvmf_tcp_req_process(ttransport, tcp_req);
2072 : }
2073 0 : }
2074 :
2075 : static void
2076 0 : nvmf_tcp_send_r2t_pdu(struct spdk_nvmf_tcp_qpair *tqpair,
2077 : struct spdk_nvmf_tcp_req *tcp_req)
2078 : {
2079 : struct nvme_tcp_pdu *rsp_pdu;
2080 : struct spdk_nvme_tcp_r2t_hdr *r2t;
2081 :
2082 0 : rsp_pdu = nvmf_tcp_req_pdu_init(tcp_req);
2083 0 : assert(rsp_pdu != NULL);
2084 :
2085 0 : r2t = &rsp_pdu->hdr.r2t;
2086 0 : r2t->common.pdu_type = SPDK_NVME_TCP_PDU_TYPE_R2T;
2087 0 : r2t->common.plen = r2t->common.hlen = sizeof(*r2t);
2088 :
2089 0 : if (tqpair->host_hdgst_enable) {
2090 0 : r2t->common.flags |= SPDK_NVME_TCP_CH_FLAGS_HDGSTF;
2091 0 : r2t->common.plen += SPDK_NVME_TCP_DIGEST_LEN;
2092 : }
2093 :
2094 0 : r2t->cccid = tcp_req->req.cmd->nvme_cmd.cid;
2095 0 : r2t->ttag = tcp_req->ttag;
2096 0 : r2t->r2to = tcp_req->h2c_offset;
2097 0 : r2t->r2tl = tcp_req->req.length;
2098 :
2099 0 : nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_AWAITING_R2T_ACK);
2100 :
2101 0 : SPDK_DEBUGLOG(nvmf_tcp,
2102 : "tcp_req(%p) on tqpair(%p), r2t_info: cccid=%u, ttag=%u, r2to=%u, r2tl=%u\n",
2103 : tcp_req, tqpair, r2t->cccid, r2t->ttag, r2t->r2to, r2t->r2tl);
2104 0 : nvmf_tcp_qpair_write_req_pdu(tqpair, tcp_req, nvmf_tcp_r2t_complete, tcp_req);
2105 0 : }
2106 :
2107 : static void
2108 0 : nvmf_tcp_h2c_data_payload_handle(struct spdk_nvmf_tcp_transport *ttransport,
2109 : struct spdk_nvmf_tcp_qpair *tqpair,
2110 : struct nvme_tcp_pdu *pdu)
2111 : {
2112 : struct spdk_nvmf_tcp_req *tcp_req;
2113 : struct spdk_nvme_cpl *rsp;
2114 :
2115 0 : tcp_req = pdu->req;
2116 0 : assert(tcp_req != NULL);
2117 :
2118 0 : SPDK_DEBUGLOG(nvmf_tcp, "enter\n");
2119 :
2120 0 : tcp_req->h2c_offset += pdu->data_len;
2121 :
2122 : /* Wait for all of the data to arrive AND for the initial R2T PDU send to be
2123 : * acknowledged before moving on. */
2124 0 : if (tcp_req->h2c_offset == tcp_req->req.length &&
2125 0 : tcp_req->state == TCP_REQUEST_STATE_TRANSFERRING_HOST_TO_CONTROLLER) {
2126 : /* After receiving all the h2c data, we need to check whether there is
2127 : * transient transport error */
2128 0 : rsp = &tcp_req->req.rsp->nvme_cpl;
2129 0 : if (spdk_unlikely(rsp->status.sc == SPDK_NVME_SC_COMMAND_TRANSIENT_TRANSPORT_ERROR)) {
2130 0 : nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_READY_TO_COMPLETE);
2131 : } else {
2132 0 : nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_READY_TO_EXECUTE);
2133 : }
2134 0 : nvmf_tcp_req_process(ttransport, tcp_req);
2135 : }
2136 0 : }
2137 :
2138 : static void
2139 0 : nvmf_tcp_h2c_term_req_dump(struct spdk_nvme_tcp_term_req_hdr *h2c_term_req)
2140 : {
2141 0 : SPDK_ERRLOG("Error info of pdu(%p): %s\n", h2c_term_req,
2142 : spdk_nvmf_tcp_term_req_fes_str[h2c_term_req->fes]);
2143 0 : if ((h2c_term_req->fes == SPDK_NVME_TCP_TERM_REQ_FES_INVALID_HEADER_FIELD) ||
2144 0 : (h2c_term_req->fes == SPDK_NVME_TCP_TERM_REQ_FES_INVALID_DATA_UNSUPPORTED_PARAMETER)) {
2145 0 : SPDK_DEBUGLOG(nvmf_tcp, "The offset from the start of the PDU header is %u\n",
2146 : DGET32(h2c_term_req->fei));
2147 : }
2148 0 : }
2149 :
2150 : static void
2151 0 : nvmf_tcp_h2c_term_req_hdr_handle(struct spdk_nvmf_tcp_qpair *tqpair,
2152 : struct nvme_tcp_pdu *pdu)
2153 : {
2154 0 : struct spdk_nvme_tcp_term_req_hdr *h2c_term_req = &pdu->hdr.term_req;
2155 0 : uint32_t error_offset = 0;
2156 : enum spdk_nvme_tcp_term_req_fes fes;
2157 :
2158 0 : if (h2c_term_req->fes > SPDK_NVME_TCP_TERM_REQ_FES_INVALID_DATA_UNSUPPORTED_PARAMETER) {
2159 0 : SPDK_ERRLOG("Fatal Error Status(FES) is unknown for h2c_term_req pdu=%p\n", pdu);
2160 0 : fes = SPDK_NVME_TCP_TERM_REQ_FES_INVALID_HEADER_FIELD;
2161 0 : error_offset = offsetof(struct spdk_nvme_tcp_term_req_hdr, fes);
2162 0 : goto end;
2163 : }
2164 :
2165 : /* set the data buffer */
2166 0 : nvme_tcp_pdu_set_data(pdu, (uint8_t *)pdu->hdr.raw + h2c_term_req->common.hlen,
2167 0 : h2c_term_req->common.plen - h2c_term_req->common.hlen);
2168 0 : nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_PAYLOAD);
2169 0 : return;
2170 0 : end:
2171 0 : nvmf_tcp_send_c2h_term_req(tqpair, pdu, fes, error_offset);
2172 : }
2173 :
2174 : static void
2175 0 : nvmf_tcp_h2c_term_req_payload_handle(struct spdk_nvmf_tcp_qpair *tqpair,
2176 : struct nvme_tcp_pdu *pdu)
2177 : {
2178 0 : struct spdk_nvme_tcp_term_req_hdr *h2c_term_req = &pdu->hdr.term_req;
2179 :
2180 0 : nvmf_tcp_h2c_term_req_dump(h2c_term_req);
2181 0 : nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_QUIESCING);
2182 0 : }
2183 :
2184 : static void
2185 0 : _nvmf_tcp_pdu_payload_handle(struct spdk_nvmf_tcp_qpair *tqpair, struct nvme_tcp_pdu *pdu)
2186 : {
2187 0 : struct spdk_nvmf_tcp_transport *ttransport = SPDK_CONTAINEROF(tqpair->qpair.transport,
2188 : struct spdk_nvmf_tcp_transport, transport);
2189 :
2190 0 : switch (pdu->hdr.common.pdu_type) {
2191 0 : case SPDK_NVME_TCP_PDU_TYPE_CAPSULE_CMD:
2192 0 : nvmf_tcp_capsule_cmd_payload_handle(ttransport, tqpair, pdu);
2193 0 : break;
2194 0 : case SPDK_NVME_TCP_PDU_TYPE_H2C_DATA:
2195 0 : nvmf_tcp_h2c_data_payload_handle(ttransport, tqpair, pdu);
2196 0 : break;
2197 :
2198 0 : case SPDK_NVME_TCP_PDU_TYPE_H2C_TERM_REQ:
2199 0 : nvmf_tcp_h2c_term_req_payload_handle(tqpair, pdu);
2200 0 : break;
2201 :
2202 0 : default:
2203 : /* The code should not go to here */
2204 0 : SPDK_ERRLOG("ERROR pdu type %d\n", pdu->hdr.common.pdu_type);
2205 0 : break;
2206 : }
2207 0 : SLIST_INSERT_HEAD(&tqpair->tcp_pdu_free_queue, pdu, slist);
2208 0 : tqpair->tcp_pdu_working_count--;
2209 0 : }
2210 :
2211 : static inline void
2212 1 : nvmf_tcp_req_set_cpl(struct spdk_nvmf_tcp_req *treq, int sct, int sc)
2213 : {
2214 1 : treq->req.rsp->nvme_cpl.status.sct = sct;
2215 1 : treq->req.rsp->nvme_cpl.status.sc = sc;
2216 1 : treq->req.rsp->nvme_cpl.cid = treq->req.cmd->nvme_cmd.cid;
2217 1 : }
2218 :
2219 : static void
2220 0 : data_crc32_calc_done(void *cb_arg, int status)
2221 : {
2222 0 : struct nvme_tcp_pdu *pdu = cb_arg;
2223 0 : struct spdk_nvmf_tcp_qpair *tqpair = pdu->qpair;
2224 :
2225 : /* async crc32 calculation is failed and use direct calculation to check */
2226 0 : if (spdk_unlikely(status)) {
2227 0 : SPDK_ERRLOG("Data digest on tqpair=(%p) with pdu=%p failed to be calculated asynchronously\n",
2228 : tqpair, pdu);
2229 0 : pdu->data_digest_crc32 = nvme_tcp_pdu_calc_data_digest(pdu);
2230 : }
2231 0 : pdu->data_digest_crc32 ^= SPDK_CRC32C_XOR;
2232 0 : if (!MATCH_DIGEST_WORD(pdu->data_digest, pdu->data_digest_crc32)) {
2233 0 : SPDK_ERRLOG("Data digest error on tqpair=(%p) with pdu=%p\n", tqpair, pdu);
2234 0 : assert(pdu->req != NULL);
2235 0 : nvmf_tcp_req_set_cpl(pdu->req, SPDK_NVME_SCT_GENERIC,
2236 : SPDK_NVME_SC_COMMAND_TRANSIENT_TRANSPORT_ERROR);
2237 : }
2238 0 : _nvmf_tcp_pdu_payload_handle(tqpair, pdu);
2239 0 : }
2240 :
2241 : static void
2242 0 : nvmf_tcp_pdu_payload_handle(struct spdk_nvmf_tcp_qpair *tqpair, struct nvme_tcp_pdu *pdu)
2243 : {
2244 0 : int rc = 0;
2245 0 : assert(tqpair->recv_state == NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_PAYLOAD);
2246 0 : tqpair->pdu_in_progress = NULL;
2247 0 : nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_READY);
2248 0 : SPDK_DEBUGLOG(nvmf_tcp, "enter\n");
2249 : /* check data digest if need */
2250 0 : if (pdu->ddgst_enable) {
2251 0 : if (tqpair->qpair.qid != 0 && !pdu->dif_ctx && tqpair->group &&
2252 0 : (pdu->data_len % SPDK_NVME_TCP_DIGEST_ALIGNMENT == 0)) {
2253 0 : rc = spdk_accel_submit_crc32cv(tqpair->group->accel_channel, &pdu->data_digest_crc32, pdu->data_iov,
2254 : pdu->data_iovcnt, 0, data_crc32_calc_done, pdu);
2255 0 : if (spdk_likely(rc == 0)) {
2256 0 : return;
2257 : }
2258 : } else {
2259 0 : pdu->data_digest_crc32 = nvme_tcp_pdu_calc_data_digest(pdu);
2260 : }
2261 0 : data_crc32_calc_done(pdu, rc);
2262 : } else {
2263 0 : _nvmf_tcp_pdu_payload_handle(tqpair, pdu);
2264 : }
2265 : }
2266 :
2267 : static void
2268 0 : nvmf_tcp_send_icresp_complete(void *cb_arg)
2269 : {
2270 0 : struct spdk_nvmf_tcp_qpair *tqpair = cb_arg;
2271 :
2272 0 : nvmf_tcp_qpair_set_state(tqpair, NVMF_TCP_QPAIR_STATE_RUNNING);
2273 0 : }
2274 :
2275 : static void
2276 3 : nvmf_tcp_icreq_handle(struct spdk_nvmf_tcp_transport *ttransport,
2277 : struct spdk_nvmf_tcp_qpair *tqpair,
2278 : struct nvme_tcp_pdu *pdu)
2279 : {
2280 3 : struct spdk_nvme_tcp_ic_req *ic_req = &pdu->hdr.ic_req;
2281 : struct nvme_tcp_pdu *rsp_pdu;
2282 : struct spdk_nvme_tcp_ic_resp *ic_resp;
2283 3 : uint32_t error_offset = 0;
2284 : enum spdk_nvme_tcp_term_req_fes fes;
2285 :
2286 : /* Only PFV 0 is defined currently */
2287 3 : if (ic_req->pfv != 0) {
2288 2 : SPDK_ERRLOG("Expected ICReq PFV %u, got %u\n", 0u, ic_req->pfv);
2289 2 : fes = SPDK_NVME_TCP_TERM_REQ_FES_INVALID_HEADER_FIELD;
2290 2 : error_offset = offsetof(struct spdk_nvme_tcp_ic_req, pfv);
2291 2 : goto end;
2292 : }
2293 :
2294 : /* This value is 0’s based value in units of dwords should not be larger than SPDK_NVME_TCP_HPDA_MAX */
2295 1 : if (ic_req->hpda > SPDK_NVME_TCP_HPDA_MAX) {
2296 0 : SPDK_ERRLOG("ICReq HPDA out of range 0 to 31, got %u\n", ic_req->hpda);
2297 0 : fes = SPDK_NVME_TCP_TERM_REQ_FES_INVALID_HEADER_FIELD;
2298 0 : error_offset = offsetof(struct spdk_nvme_tcp_ic_req, hpda);
2299 0 : goto end;
2300 : }
2301 :
2302 : /* MAXR2T is 0's based */
2303 1 : SPDK_DEBUGLOG(nvmf_tcp, "maxr2t =%u\n", (ic_req->maxr2t + 1u));
2304 :
2305 1 : tqpair->host_hdgst_enable = ic_req->dgst.bits.hdgst_enable ? true : false;
2306 1 : if (!tqpair->host_hdgst_enable) {
2307 1 : tqpair->recv_buf_size -= SPDK_NVME_TCP_DIGEST_LEN * SPDK_NVMF_TCP_RECV_BUF_SIZE_FACTOR;
2308 : }
2309 :
2310 1 : tqpair->host_ddgst_enable = ic_req->dgst.bits.ddgst_enable ? true : false;
2311 1 : if (!tqpair->host_ddgst_enable) {
2312 1 : tqpair->recv_buf_size -= SPDK_NVME_TCP_DIGEST_LEN * SPDK_NVMF_TCP_RECV_BUF_SIZE_FACTOR;
2313 : }
2314 :
2315 1 : tqpair->recv_buf_size = spdk_max(tqpair->recv_buf_size, MIN_SOCK_PIPE_SIZE);
2316 : /* Now that we know whether digests are enabled, properly size the receive buffer */
2317 1 : if (spdk_sock_set_recvbuf(tqpair->sock, tqpair->recv_buf_size) < 0) {
2318 0 : SPDK_WARNLOG("Unable to allocate enough memory for receive buffer on tqpair=%p with size=%d\n",
2319 : tqpair,
2320 : tqpair->recv_buf_size);
2321 : /* Not fatal. */
2322 : }
2323 :
2324 1 : tqpair->cpda = spdk_min(ic_req->hpda, SPDK_NVME_TCP_CPDA_MAX);
2325 1 : SPDK_DEBUGLOG(nvmf_tcp, "cpda of tqpair=(%p) is : %u\n", tqpair, tqpair->cpda);
2326 :
2327 1 : rsp_pdu = tqpair->mgmt_pdu;
2328 :
2329 1 : ic_resp = &rsp_pdu->hdr.ic_resp;
2330 1 : ic_resp->common.pdu_type = SPDK_NVME_TCP_PDU_TYPE_IC_RESP;
2331 1 : ic_resp->common.hlen = ic_resp->common.plen = sizeof(*ic_resp);
2332 1 : ic_resp->pfv = 0;
2333 1 : ic_resp->cpda = tqpair->cpda;
2334 1 : ic_resp->maxh2cdata = ttransport->transport.opts.max_io_size;
2335 1 : ic_resp->dgst.bits.hdgst_enable = tqpair->host_hdgst_enable ? 1 : 0;
2336 1 : ic_resp->dgst.bits.ddgst_enable = tqpair->host_ddgst_enable ? 1 : 0;
2337 :
2338 1 : SPDK_DEBUGLOG(nvmf_tcp, "host_hdgst_enable: %u\n", tqpair->host_hdgst_enable);
2339 1 : SPDK_DEBUGLOG(nvmf_tcp, "host_ddgst_enable: %u\n", tqpair->host_ddgst_enable);
2340 :
2341 1 : nvmf_tcp_qpair_set_state(tqpair, NVMF_TCP_QPAIR_STATE_INITIALIZING);
2342 1 : nvmf_tcp_qpair_write_mgmt_pdu(tqpair, nvmf_tcp_send_icresp_complete, tqpair);
2343 1 : nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_READY);
2344 1 : return;
2345 2 : end:
2346 2 : nvmf_tcp_send_c2h_term_req(tqpair, pdu, fes, error_offset);
2347 : }
2348 :
2349 : static void
2350 0 : nvmf_tcp_pdu_psh_handle(struct spdk_nvmf_tcp_qpair *tqpair,
2351 : struct spdk_nvmf_tcp_transport *ttransport)
2352 : {
2353 : struct nvme_tcp_pdu *pdu;
2354 : int rc;
2355 0 : uint32_t crc32c, error_offset = 0;
2356 : enum spdk_nvme_tcp_term_req_fes fes;
2357 :
2358 0 : assert(tqpair->recv_state == NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_PSH);
2359 0 : pdu = tqpair->pdu_in_progress;
2360 :
2361 0 : SPDK_DEBUGLOG(nvmf_tcp, "pdu type of tqpair(%p) is %d\n", tqpair,
2362 : pdu->hdr.common.pdu_type);
2363 : /* check header digest if needed */
2364 0 : if (pdu->has_hdgst) {
2365 0 : SPDK_DEBUGLOG(nvmf_tcp, "Compare the header of pdu=%p on tqpair=%p\n", pdu, tqpair);
2366 0 : crc32c = nvme_tcp_pdu_calc_header_digest(pdu);
2367 0 : rc = MATCH_DIGEST_WORD((uint8_t *)pdu->hdr.raw + pdu->hdr.common.hlen, crc32c);
2368 0 : if (rc == 0) {
2369 0 : SPDK_ERRLOG("Header digest error on tqpair=(%p) with pdu=%p\n", tqpair, pdu);
2370 0 : fes = SPDK_NVME_TCP_TERM_REQ_FES_HDGST_ERROR;
2371 0 : nvmf_tcp_send_c2h_term_req(tqpair, pdu, fes, error_offset);
2372 0 : return;
2373 :
2374 : }
2375 : }
2376 :
2377 0 : switch (pdu->hdr.common.pdu_type) {
2378 0 : case SPDK_NVME_TCP_PDU_TYPE_IC_REQ:
2379 0 : nvmf_tcp_icreq_handle(ttransport, tqpair, pdu);
2380 0 : break;
2381 0 : case SPDK_NVME_TCP_PDU_TYPE_CAPSULE_CMD:
2382 0 : nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_AWAIT_REQ);
2383 0 : break;
2384 0 : case SPDK_NVME_TCP_PDU_TYPE_H2C_DATA:
2385 0 : nvmf_tcp_h2c_data_hdr_handle(ttransport, tqpair, pdu);
2386 0 : break;
2387 :
2388 0 : case SPDK_NVME_TCP_PDU_TYPE_H2C_TERM_REQ:
2389 0 : nvmf_tcp_h2c_term_req_hdr_handle(tqpair, pdu);
2390 0 : break;
2391 :
2392 0 : default:
2393 0 : SPDK_ERRLOG("Unexpected PDU type 0x%02x\n", tqpair->pdu_in_progress->hdr.common.pdu_type);
2394 0 : fes = SPDK_NVME_TCP_TERM_REQ_FES_INVALID_HEADER_FIELD;
2395 0 : error_offset = 1;
2396 0 : nvmf_tcp_send_c2h_term_req(tqpair, pdu, fes, error_offset);
2397 0 : break;
2398 : }
2399 : }
2400 :
2401 : static void
2402 11 : nvmf_tcp_pdu_ch_handle(struct spdk_nvmf_tcp_qpair *tqpair)
2403 : {
2404 : struct nvme_tcp_pdu *pdu;
2405 11 : uint32_t error_offset = 0;
2406 : enum spdk_nvme_tcp_term_req_fes fes;
2407 : uint8_t expected_hlen, pdo;
2408 11 : bool plen_error = false, pdo_error = false;
2409 :
2410 11 : assert(tqpair->recv_state == NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_CH);
2411 11 : pdu = tqpair->pdu_in_progress;
2412 11 : assert(pdu);
2413 11 : if (pdu->hdr.common.pdu_type == SPDK_NVME_TCP_PDU_TYPE_IC_REQ) {
2414 4 : if (tqpair->state != NVMF_TCP_QPAIR_STATE_INVALID) {
2415 1 : SPDK_ERRLOG("Already received ICreq PDU, and reject this pdu=%p\n", pdu);
2416 1 : fes = SPDK_NVME_TCP_TERM_REQ_FES_PDU_SEQUENCE_ERROR;
2417 1 : goto err;
2418 : }
2419 3 : expected_hlen = sizeof(struct spdk_nvme_tcp_ic_req);
2420 3 : if (pdu->hdr.common.plen != expected_hlen) {
2421 1 : plen_error = true;
2422 : }
2423 : } else {
2424 7 : if (tqpair->state != NVMF_TCP_QPAIR_STATE_RUNNING) {
2425 1 : SPDK_ERRLOG("The TCP/IP connection is not negotiated\n");
2426 1 : fes = SPDK_NVME_TCP_TERM_REQ_FES_PDU_SEQUENCE_ERROR;
2427 1 : goto err;
2428 : }
2429 :
2430 6 : switch (pdu->hdr.common.pdu_type) {
2431 2 : case SPDK_NVME_TCP_PDU_TYPE_CAPSULE_CMD:
2432 2 : expected_hlen = sizeof(struct spdk_nvme_tcp_cmd);
2433 2 : pdo = pdu->hdr.common.pdo;
2434 2 : if ((tqpair->cpda != 0) && (pdo % ((tqpair->cpda + 1) << 2) != 0)) {
2435 1 : pdo_error = true;
2436 1 : break;
2437 : }
2438 :
2439 1 : if (pdu->hdr.common.plen < expected_hlen) {
2440 1 : plen_error = true;
2441 : }
2442 1 : break;
2443 2 : case SPDK_NVME_TCP_PDU_TYPE_H2C_DATA:
2444 2 : expected_hlen = sizeof(struct spdk_nvme_tcp_h2c_data_hdr);
2445 2 : pdo = pdu->hdr.common.pdo;
2446 2 : if ((tqpair->cpda != 0) && (pdo % ((tqpair->cpda + 1) << 2) != 0)) {
2447 1 : pdo_error = true;
2448 1 : break;
2449 : }
2450 1 : if (pdu->hdr.common.plen < expected_hlen) {
2451 1 : plen_error = true;
2452 : }
2453 1 : break;
2454 :
2455 1 : case SPDK_NVME_TCP_PDU_TYPE_H2C_TERM_REQ:
2456 1 : expected_hlen = sizeof(struct spdk_nvme_tcp_term_req_hdr);
2457 1 : if ((pdu->hdr.common.plen <= expected_hlen) ||
2458 0 : (pdu->hdr.common.plen > SPDK_NVME_TCP_TERM_REQ_PDU_MAX_SIZE)) {
2459 1 : plen_error = true;
2460 : }
2461 1 : break;
2462 :
2463 1 : default:
2464 1 : SPDK_ERRLOG("Unexpected PDU type 0x%02x\n", pdu->hdr.common.pdu_type);
2465 1 : fes = SPDK_NVME_TCP_TERM_REQ_FES_INVALID_HEADER_FIELD;
2466 1 : error_offset = offsetof(struct spdk_nvme_tcp_common_pdu_hdr, pdu_type);
2467 1 : goto err;
2468 : }
2469 : }
2470 :
2471 8 : if (pdu->hdr.common.hlen != expected_hlen) {
2472 1 : SPDK_ERRLOG("PDU type=0x%02x, Expected ICReq header length %u, got %u on tqpair=%p\n",
2473 : pdu->hdr.common.pdu_type,
2474 : expected_hlen, pdu->hdr.common.hlen, tqpair);
2475 1 : fes = SPDK_NVME_TCP_TERM_REQ_FES_INVALID_HEADER_FIELD;
2476 1 : error_offset = offsetof(struct spdk_nvme_tcp_common_pdu_hdr, hlen);
2477 1 : goto err;
2478 7 : } else if (pdo_error) {
2479 2 : fes = SPDK_NVME_TCP_TERM_REQ_FES_INVALID_HEADER_FIELD;
2480 2 : error_offset = offsetof(struct spdk_nvme_tcp_common_pdu_hdr, pdo);
2481 5 : } else if (plen_error) {
2482 4 : fes = SPDK_NVME_TCP_TERM_REQ_FES_INVALID_HEADER_FIELD;
2483 4 : error_offset = offsetof(struct spdk_nvme_tcp_common_pdu_hdr, plen);
2484 4 : goto err;
2485 : } else {
2486 1 : nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_PSH);
2487 1 : nvme_tcp_pdu_calc_psh_len(tqpair->pdu_in_progress, tqpair->host_hdgst_enable);
2488 1 : return;
2489 : }
2490 10 : err:
2491 10 : nvmf_tcp_send_c2h_term_req(tqpair, pdu, fes, error_offset);
2492 : }
2493 :
2494 : static int
2495 0 : nvmf_tcp_sock_process(struct spdk_nvmf_tcp_qpair *tqpair)
2496 : {
2497 0 : int rc = 0;
2498 : struct nvme_tcp_pdu *pdu;
2499 : enum nvme_tcp_pdu_recv_state prev_state;
2500 : uint32_t data_len;
2501 0 : struct spdk_nvmf_tcp_transport *ttransport = SPDK_CONTAINEROF(tqpair->qpair.transport,
2502 : struct spdk_nvmf_tcp_transport, transport);
2503 :
2504 : /* The loop here is to allow for several back-to-back state changes. */
2505 : do {
2506 0 : prev_state = tqpair->recv_state;
2507 0 : SPDK_DEBUGLOG(nvmf_tcp, "tqpair(%p) recv pdu entering state %d\n", tqpair, prev_state);
2508 :
2509 0 : pdu = tqpair->pdu_in_progress;
2510 0 : assert(pdu != NULL ||
2511 : tqpair->recv_state == NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_READY ||
2512 : tqpair->recv_state == NVME_TCP_PDU_RECV_STATE_QUIESCING ||
2513 : tqpair->recv_state == NVME_TCP_PDU_RECV_STATE_ERROR);
2514 :
2515 0 : switch (tqpair->recv_state) {
2516 : /* Wait for the common header */
2517 0 : case NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_READY:
2518 0 : if (!pdu) {
2519 0 : pdu = SLIST_FIRST(&tqpair->tcp_pdu_free_queue);
2520 0 : if (spdk_unlikely(!pdu)) {
2521 0 : return NVME_TCP_PDU_IN_PROGRESS;
2522 : }
2523 0 : SLIST_REMOVE_HEAD(&tqpair->tcp_pdu_free_queue, slist);
2524 0 : tqpair->pdu_in_progress = pdu;
2525 0 : tqpair->tcp_pdu_working_count++;
2526 : }
2527 0 : memset(pdu, 0, offsetof(struct nvme_tcp_pdu, qpair));
2528 0 : nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_CH);
2529 : /* FALLTHROUGH */
2530 0 : case NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_CH:
2531 0 : if (spdk_unlikely(tqpair->state == NVMF_TCP_QPAIR_STATE_INITIALIZING)) {
2532 0 : return rc;
2533 : }
2534 :
2535 0 : rc = nvme_tcp_read_data(tqpair->sock,
2536 0 : sizeof(struct spdk_nvme_tcp_common_pdu_hdr) - pdu->ch_valid_bytes,
2537 0 : (void *)&pdu->hdr.common + pdu->ch_valid_bytes);
2538 0 : if (rc < 0) {
2539 0 : SPDK_DEBUGLOG(nvmf_tcp, "will disconnect tqpair=%p\n", tqpair);
2540 0 : nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_QUIESCING);
2541 0 : break;
2542 0 : } else if (rc > 0) {
2543 0 : pdu->ch_valid_bytes += rc;
2544 0 : spdk_trace_record(TRACE_TCP_READ_FROM_SOCKET_DONE, tqpair->qpair.trace_id, rc, 0);
2545 : }
2546 :
2547 0 : if (pdu->ch_valid_bytes < sizeof(struct spdk_nvme_tcp_common_pdu_hdr)) {
2548 0 : return NVME_TCP_PDU_IN_PROGRESS;
2549 : }
2550 :
2551 : /* The command header of this PDU has now been read from the socket. */
2552 0 : nvmf_tcp_pdu_ch_handle(tqpair);
2553 0 : break;
2554 : /* Wait for the pdu specific header */
2555 0 : case NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_PSH:
2556 0 : rc = nvme_tcp_read_data(tqpair->sock,
2557 0 : pdu->psh_len - pdu->psh_valid_bytes,
2558 0 : (void *)&pdu->hdr.raw + sizeof(struct spdk_nvme_tcp_common_pdu_hdr) + pdu->psh_valid_bytes);
2559 0 : if (rc < 0) {
2560 0 : nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_QUIESCING);
2561 0 : break;
2562 0 : } else if (rc > 0) {
2563 0 : spdk_trace_record(TRACE_TCP_READ_FROM_SOCKET_DONE, tqpair->qpair.trace_id, rc, 0);
2564 0 : pdu->psh_valid_bytes += rc;
2565 : }
2566 :
2567 0 : if (pdu->psh_valid_bytes < pdu->psh_len) {
2568 0 : return NVME_TCP_PDU_IN_PROGRESS;
2569 : }
2570 :
2571 : /* All header(ch, psh, head digits) of this PDU has now been read from the socket. */
2572 0 : nvmf_tcp_pdu_psh_handle(tqpair, ttransport);
2573 0 : break;
2574 : /* Wait for the req slot */
2575 0 : case NVME_TCP_PDU_RECV_STATE_AWAIT_REQ:
2576 0 : nvmf_tcp_capsule_cmd_hdr_handle(ttransport, tqpair, pdu);
2577 0 : break;
2578 : /* Wait for the request processing loop to acquire a buffer for the PDU */
2579 0 : case NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_BUF:
2580 0 : break;
2581 0 : case NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_PAYLOAD:
2582 : /* check whether the data is valid, if not we just return */
2583 0 : if (!pdu->data_len) {
2584 0 : return NVME_TCP_PDU_IN_PROGRESS;
2585 : }
2586 :
2587 0 : data_len = pdu->data_len;
2588 : /* data digest */
2589 0 : if (spdk_unlikely((pdu->hdr.common.pdu_type != SPDK_NVME_TCP_PDU_TYPE_H2C_TERM_REQ) &&
2590 : tqpair->host_ddgst_enable)) {
2591 0 : data_len += SPDK_NVME_TCP_DIGEST_LEN;
2592 0 : pdu->ddgst_enable = true;
2593 : }
2594 :
2595 0 : rc = nvme_tcp_read_payload_data(tqpair->sock, pdu);
2596 0 : if (rc < 0) {
2597 0 : nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_QUIESCING);
2598 0 : break;
2599 : }
2600 0 : pdu->rw_offset += rc;
2601 :
2602 0 : if (pdu->rw_offset < data_len) {
2603 0 : return NVME_TCP_PDU_IN_PROGRESS;
2604 : }
2605 :
2606 : /* Generate and insert DIF to whole data block received if DIF is enabled */
2607 0 : if (spdk_unlikely(pdu->dif_ctx != NULL) &&
2608 0 : spdk_dif_generate_stream(pdu->data_iov, pdu->data_iovcnt, 0, data_len,
2609 : pdu->dif_ctx) != 0) {
2610 0 : SPDK_ERRLOG("DIF generate failed\n");
2611 0 : nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_QUIESCING);
2612 0 : break;
2613 : }
2614 :
2615 : /* All of this PDU has now been read from the socket. */
2616 0 : nvmf_tcp_pdu_payload_handle(tqpair, pdu);
2617 0 : break;
2618 0 : case NVME_TCP_PDU_RECV_STATE_QUIESCING:
2619 0 : if (tqpair->tcp_pdu_working_count != 0) {
2620 0 : return NVME_TCP_PDU_IN_PROGRESS;
2621 : }
2622 0 : nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_ERROR);
2623 0 : break;
2624 0 : case NVME_TCP_PDU_RECV_STATE_ERROR:
2625 0 : if (spdk_sock_is_connected(tqpair->sock) && tqpair->wait_terminate) {
2626 0 : return NVME_TCP_PDU_IN_PROGRESS;
2627 : }
2628 0 : return NVME_TCP_PDU_FATAL;
2629 0 : default:
2630 0 : SPDK_ERRLOG("The state(%d) is invalid\n", tqpair->recv_state);
2631 0 : abort();
2632 : break;
2633 : }
2634 0 : } while (tqpair->recv_state != prev_state);
2635 :
2636 0 : return rc;
2637 : }
2638 :
2639 : static inline void *
2640 0 : nvmf_tcp_control_msg_get(struct spdk_nvmf_tcp_control_msg_list *list,
2641 : struct spdk_nvmf_tcp_req *tcp_req)
2642 : {
2643 : struct spdk_nvmf_tcp_control_msg *msg;
2644 :
2645 0 : assert(list);
2646 :
2647 0 : msg = STAILQ_FIRST(&list->free_msgs);
2648 0 : if (!msg) {
2649 0 : SPDK_DEBUGLOG(nvmf_tcp, "Out of control messages\n");
2650 0 : STAILQ_INSERT_TAIL(&list->waiting_for_msg_reqs, tcp_req, control_msg_link);
2651 0 : return NULL;
2652 : }
2653 0 : STAILQ_REMOVE_HEAD(&list->free_msgs, link);
2654 0 : return msg;
2655 : }
2656 :
2657 : static inline void
2658 0 : nvmf_tcp_control_msg_put(struct spdk_nvmf_tcp_control_msg_list *list, void *_msg)
2659 : {
2660 0 : struct spdk_nvmf_tcp_control_msg *msg = _msg;
2661 : struct spdk_nvmf_tcp_req *tcp_req;
2662 : struct spdk_nvmf_tcp_transport *ttransport;
2663 :
2664 0 : assert(list);
2665 0 : STAILQ_INSERT_HEAD(&list->free_msgs, msg, link);
2666 0 : if (!STAILQ_EMPTY(&list->waiting_for_msg_reqs)) {
2667 0 : tcp_req = STAILQ_FIRST(&list->waiting_for_msg_reqs);
2668 0 : STAILQ_REMOVE_HEAD(&list->waiting_for_msg_reqs, control_msg_link);
2669 0 : ttransport = SPDK_CONTAINEROF(tcp_req->req.qpair->transport,
2670 : struct spdk_nvmf_tcp_transport, transport);
2671 0 : nvmf_tcp_req_process(ttransport, tcp_req);
2672 : }
2673 0 : }
2674 :
2675 : static void
2676 3 : nvmf_tcp_req_parse_sgl(struct spdk_nvmf_tcp_req *tcp_req,
2677 : struct spdk_nvmf_transport *transport,
2678 : struct spdk_nvmf_transport_poll_group *group)
2679 : {
2680 3 : struct spdk_nvmf_request *req = &tcp_req->req;
2681 : struct spdk_nvme_cmd *cmd;
2682 : struct spdk_nvme_sgl_descriptor *sgl;
2683 : struct spdk_nvmf_tcp_poll_group *tgroup;
2684 : enum spdk_nvme_tcp_term_req_fes fes;
2685 : struct nvme_tcp_pdu *pdu;
2686 : struct spdk_nvmf_tcp_qpair *tqpair;
2687 3 : uint32_t length, error_offset = 0;
2688 :
2689 3 : cmd = &req->cmd->nvme_cmd;
2690 3 : sgl = &cmd->dptr.sgl1;
2691 :
2692 3 : if (sgl->generic.type == SPDK_NVME_SGL_TYPE_TRANSPORT_DATA_BLOCK &&
2693 3 : sgl->unkeyed.subtype == SPDK_NVME_SGL_SUBTYPE_TRANSPORT) {
2694 : /* get request length from sgl */
2695 3 : length = sgl->unkeyed.length;
2696 3 : if (spdk_unlikely(length > transport->opts.max_io_size)) {
2697 1 : SPDK_ERRLOG("SGL length 0x%x exceeds max io size 0x%x\n",
2698 : length, transport->opts.max_io_size);
2699 1 : fes = SPDK_NVME_TCP_TERM_REQ_FES_DATA_TRANSFER_LIMIT_EXCEEDED;
2700 1 : goto fatal_err;
2701 : }
2702 :
2703 : /* fill request length and populate iovs */
2704 2 : req->length = length;
2705 :
2706 2 : SPDK_DEBUGLOG(nvmf_tcp, "Data requested length= 0x%x\n", length);
2707 :
2708 2 : if (spdk_unlikely(req->dif_enabled)) {
2709 0 : req->dif.orig_length = length;
2710 0 : length = spdk_dif_get_length_with_md(length, &req->dif.dif_ctx);
2711 0 : req->dif.elba_length = length;
2712 : }
2713 :
2714 2 : if (nvmf_ctrlr_use_zcopy(req)) {
2715 0 : SPDK_DEBUGLOG(nvmf_tcp, "Using zero-copy to execute request %p\n", tcp_req);
2716 0 : req->data_from_pool = false;
2717 0 : nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_HAVE_BUFFER);
2718 0 : return;
2719 : }
2720 :
2721 2 : if (spdk_nvmf_request_get_buffers(req, group, transport, length)) {
2722 : /* No available buffers. Queue this request up. */
2723 1 : SPDK_DEBUGLOG(nvmf_tcp, "No available large data buffers. Queueing request %p\n",
2724 : tcp_req);
2725 1 : return;
2726 : }
2727 :
2728 1 : nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_HAVE_BUFFER);
2729 1 : SPDK_DEBUGLOG(nvmf_tcp, "Request %p took %d buffer/s from central pool, and data=%p\n",
2730 : tcp_req, req->iovcnt, req->iov[0].iov_base);
2731 :
2732 1 : return;
2733 0 : } else if (sgl->generic.type == SPDK_NVME_SGL_TYPE_DATA_BLOCK &&
2734 0 : sgl->unkeyed.subtype == SPDK_NVME_SGL_SUBTYPE_OFFSET) {
2735 0 : uint64_t offset = sgl->address;
2736 0 : uint32_t max_len = transport->opts.in_capsule_data_size;
2737 :
2738 0 : assert(tcp_req->has_in_capsule_data);
2739 : /* Capsule Cmd with In-capsule Data should get data length from pdu header */
2740 0 : tqpair = tcp_req->pdu->qpair;
2741 : /* receiving pdu is not same with the pdu in tcp_req */
2742 0 : pdu = tqpair->pdu_in_progress;
2743 0 : length = pdu->hdr.common.plen - pdu->psh_len - sizeof(struct spdk_nvme_tcp_common_pdu_hdr);
2744 0 : if (tqpair->host_ddgst_enable) {
2745 0 : length -= SPDK_NVME_TCP_DIGEST_LEN;
2746 : }
2747 : /* This error is not defined in NVMe/TCP spec, take this error as fatal error */
2748 0 : if (spdk_unlikely(length != sgl->unkeyed.length)) {
2749 0 : SPDK_ERRLOG("In-Capsule Data length 0x%x is not equal to SGL data length 0x%x\n",
2750 : length, sgl->unkeyed.length);
2751 0 : fes = SPDK_NVME_TCP_TERM_REQ_FES_INVALID_HEADER_FIELD;
2752 0 : error_offset = offsetof(struct spdk_nvme_tcp_common_pdu_hdr, plen);
2753 0 : goto fatal_err;
2754 : }
2755 :
2756 0 : SPDK_DEBUGLOG(nvmf_tcp, "In-capsule data: offset 0x%" PRIx64 ", length 0x%x\n",
2757 : offset, length);
2758 :
2759 : /* The NVMe/TCP transport does not use ICDOFF to control the in-capsule data offset. ICDOFF should be '0' */
2760 0 : if (spdk_unlikely(offset != 0)) {
2761 : /* Not defined fatal error in NVMe/TCP spec, handle this error as a fatal error */
2762 0 : SPDK_ERRLOG("In-capsule offset 0x%" PRIx64 " should be ZERO in NVMe/TCP\n", offset);
2763 0 : fes = SPDK_NVME_TCP_TERM_REQ_FES_INVALID_DATA_UNSUPPORTED_PARAMETER;
2764 0 : error_offset = offsetof(struct spdk_nvme_tcp_cmd, ccsqe.dptr.sgl1.address);
2765 0 : goto fatal_err;
2766 : }
2767 :
2768 0 : if (spdk_unlikely(length > max_len)) {
2769 : /* According to the SPEC we should support ICD up to 8192 bytes for admin and fabric commands */
2770 0 : if (length <= SPDK_NVME_TCP_IN_CAPSULE_DATA_MAX_SIZE &&
2771 0 : (cmd->opc == SPDK_NVME_OPC_FABRIC || req->qpair->qid == 0)) {
2772 :
2773 : /* Get a buffer from dedicated list */
2774 0 : SPDK_DEBUGLOG(nvmf_tcp, "Getting a buffer from control msg list\n");
2775 0 : tgroup = SPDK_CONTAINEROF(group, struct spdk_nvmf_tcp_poll_group, group);
2776 0 : assert(tgroup->control_msg_list);
2777 0 : req->iov[0].iov_base = nvmf_tcp_control_msg_get(tgroup->control_msg_list, tcp_req);
2778 0 : if (!req->iov[0].iov_base) {
2779 : /* No available buffers. Queue this request up. */
2780 0 : SPDK_DEBUGLOG(nvmf_tcp, "No available ICD buffers. Queueing request %p\n", tcp_req);
2781 0 : nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_BUF);
2782 0 : return;
2783 : }
2784 : } else {
2785 0 : SPDK_ERRLOG("In-capsule data length 0x%x exceeds capsule length 0x%x\n",
2786 : length, max_len);
2787 0 : fes = SPDK_NVME_TCP_TERM_REQ_FES_DATA_TRANSFER_LIMIT_EXCEEDED;
2788 0 : goto fatal_err;
2789 : }
2790 : } else {
2791 0 : req->iov[0].iov_base = tcp_req->buf;
2792 : }
2793 :
2794 0 : req->length = length;
2795 0 : req->data_from_pool = false;
2796 :
2797 0 : if (spdk_unlikely(req->dif_enabled)) {
2798 0 : length = spdk_dif_get_length_with_md(length, &req->dif.dif_ctx);
2799 0 : req->dif.elba_length = length;
2800 : }
2801 :
2802 0 : req->iov[0].iov_len = length;
2803 0 : req->iovcnt = 1;
2804 0 : nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_HAVE_BUFFER);
2805 :
2806 0 : return;
2807 : }
2808 : /* If we want to handle the problem here, then we can't skip the following data segment.
2809 : * Because this function runs before reading data part, now handle all errors as fatal errors. */
2810 0 : SPDK_ERRLOG("Invalid NVMf I/O Command SGL: Type 0x%x, Subtype 0x%x\n",
2811 : sgl->generic.type, sgl->generic.subtype);
2812 0 : fes = SPDK_NVME_TCP_TERM_REQ_FES_INVALID_DATA_UNSUPPORTED_PARAMETER;
2813 0 : error_offset = offsetof(struct spdk_nvme_tcp_cmd, ccsqe.dptr.sgl1.generic);
2814 1 : fatal_err:
2815 1 : nvmf_tcp_send_c2h_term_req(tcp_req->pdu->qpair, tcp_req->pdu, fes, error_offset);
2816 : }
2817 :
2818 : static inline enum spdk_nvme_media_error_status_code
2819 0 : nvmf_tcp_dif_error_to_compl_status(uint8_t err_type) {
2820 : enum spdk_nvme_media_error_status_code result;
2821 :
2822 0 : switch (err_type)
2823 : {
2824 0 : case SPDK_DIF_REFTAG_ERROR:
2825 0 : result = SPDK_NVME_SC_REFERENCE_TAG_CHECK_ERROR;
2826 0 : break;
2827 0 : case SPDK_DIF_APPTAG_ERROR:
2828 0 : result = SPDK_NVME_SC_APPLICATION_TAG_CHECK_ERROR;
2829 0 : break;
2830 0 : case SPDK_DIF_GUARD_ERROR:
2831 0 : result = SPDK_NVME_SC_GUARD_CHECK_ERROR;
2832 0 : break;
2833 0 : default:
2834 0 : SPDK_UNREACHABLE();
2835 : break;
2836 : }
2837 :
2838 0 : return result;
2839 : }
2840 :
2841 : static void
2842 4 : _nvmf_tcp_send_c2h_data(struct spdk_nvmf_tcp_qpair *tqpair,
2843 : struct spdk_nvmf_tcp_req *tcp_req)
2844 : {
2845 4 : struct spdk_nvmf_tcp_transport *ttransport = SPDK_CONTAINEROF(
2846 : tqpair->qpair.transport, struct spdk_nvmf_tcp_transport, transport);
2847 : struct nvme_tcp_pdu *rsp_pdu;
2848 : struct spdk_nvme_tcp_c2h_data_hdr *c2h_data;
2849 : uint32_t plen, pdo, alignment;
2850 : int rc;
2851 :
2852 4 : SPDK_DEBUGLOG(nvmf_tcp, "enter\n");
2853 :
2854 4 : rsp_pdu = tcp_req->pdu;
2855 4 : assert(rsp_pdu != NULL);
2856 :
2857 4 : c2h_data = &rsp_pdu->hdr.c2h_data;
2858 4 : c2h_data->common.pdu_type = SPDK_NVME_TCP_PDU_TYPE_C2H_DATA;
2859 4 : plen = c2h_data->common.hlen = sizeof(*c2h_data);
2860 :
2861 4 : if (tqpair->host_hdgst_enable) {
2862 0 : plen += SPDK_NVME_TCP_DIGEST_LEN;
2863 0 : c2h_data->common.flags |= SPDK_NVME_TCP_CH_FLAGS_HDGSTF;
2864 : }
2865 :
2866 : /* set the psh */
2867 4 : c2h_data->cccid = tcp_req->req.cmd->nvme_cmd.cid;
2868 4 : c2h_data->datal = tcp_req->req.length - tcp_req->pdu->rw_offset;
2869 4 : c2h_data->datao = tcp_req->pdu->rw_offset;
2870 :
2871 : /* set the padding */
2872 4 : rsp_pdu->padding_len = 0;
2873 4 : pdo = plen;
2874 4 : if (tqpair->cpda) {
2875 0 : alignment = (tqpair->cpda + 1) << 2;
2876 0 : if (plen % alignment != 0) {
2877 0 : pdo = (plen + alignment) / alignment * alignment;
2878 0 : rsp_pdu->padding_len = pdo - plen;
2879 0 : plen = pdo;
2880 : }
2881 : }
2882 :
2883 4 : c2h_data->common.pdo = pdo;
2884 4 : plen += c2h_data->datal;
2885 4 : if (tqpair->host_ddgst_enable) {
2886 0 : c2h_data->common.flags |= SPDK_NVME_TCP_CH_FLAGS_DDGSTF;
2887 0 : plen += SPDK_NVME_TCP_DIGEST_LEN;
2888 : }
2889 :
2890 4 : c2h_data->common.plen = plen;
2891 :
2892 4 : if (spdk_unlikely(tcp_req->req.dif_enabled)) {
2893 0 : rsp_pdu->dif_ctx = &tcp_req->req.dif.dif_ctx;
2894 : }
2895 :
2896 4 : nvme_tcp_pdu_set_data_buf(rsp_pdu, tcp_req->req.iov, tcp_req->req.iovcnt,
2897 : c2h_data->datao, c2h_data->datal);
2898 :
2899 :
2900 4 : c2h_data->common.flags |= SPDK_NVME_TCP_C2H_DATA_FLAGS_LAST_PDU;
2901 : /* Need to send the capsule response if response is not all 0 */
2902 4 : if (ttransport->tcp_opts.c2h_success &&
2903 2 : tcp_req->rsp.cdw0 == 0 && tcp_req->rsp.cdw1 == 0) {
2904 1 : c2h_data->common.flags |= SPDK_NVME_TCP_C2H_DATA_FLAGS_SUCCESS;
2905 : }
2906 :
2907 4 : if (spdk_unlikely(tcp_req->req.dif_enabled)) {
2908 0 : struct spdk_nvme_cpl *rsp = &tcp_req->req.rsp->nvme_cpl;
2909 0 : struct spdk_dif_error err_blk = {};
2910 0 : uint32_t mapped_length = 0;
2911 0 : uint32_t available_iovs = SPDK_COUNTOF(rsp_pdu->iov);
2912 0 : uint32_t ddgst_len = 0;
2913 :
2914 0 : if (tqpair->host_ddgst_enable) {
2915 : /* Data digest consumes additional iov entry */
2916 0 : available_iovs--;
2917 : /* plen needs to be updated since nvme_tcp_build_iovs compares expected and actual plen */
2918 0 : ddgst_len = SPDK_NVME_TCP_DIGEST_LEN;
2919 0 : c2h_data->common.plen -= ddgst_len;
2920 : }
2921 : /* Temp call to estimate if data can be described by limited number of iovs.
2922 : * iov vector will be rebuilt in nvmf_tcp_qpair_write_pdu */
2923 0 : nvme_tcp_build_iovs(rsp_pdu->iov, available_iovs, rsp_pdu, tqpair->host_hdgst_enable,
2924 : false, &mapped_length);
2925 :
2926 0 : if (mapped_length != c2h_data->common.plen) {
2927 0 : c2h_data->datal = mapped_length - (c2h_data->common.plen - c2h_data->datal);
2928 0 : SPDK_DEBUGLOG(nvmf_tcp,
2929 : "Part C2H, data_len %u (of %u), PDU len %u, updated PDU len %u, offset %u\n",
2930 : c2h_data->datal, tcp_req->req.length, c2h_data->common.plen, mapped_length, rsp_pdu->rw_offset);
2931 0 : c2h_data->common.plen = mapped_length;
2932 :
2933 : /* Rebuild pdu->data_iov since data length is changed */
2934 0 : nvme_tcp_pdu_set_data_buf(rsp_pdu, tcp_req->req.iov, tcp_req->req.iovcnt, c2h_data->datao,
2935 : c2h_data->datal);
2936 :
2937 0 : c2h_data->common.flags &= ~(SPDK_NVME_TCP_C2H_DATA_FLAGS_LAST_PDU |
2938 : SPDK_NVME_TCP_C2H_DATA_FLAGS_SUCCESS);
2939 : }
2940 :
2941 0 : c2h_data->common.plen += ddgst_len;
2942 :
2943 0 : assert(rsp_pdu->rw_offset <= tcp_req->req.length);
2944 :
2945 0 : rc = spdk_dif_verify_stream(rsp_pdu->data_iov, rsp_pdu->data_iovcnt,
2946 : 0, rsp_pdu->data_len, rsp_pdu->dif_ctx, &err_blk);
2947 0 : if (rc != 0) {
2948 0 : SPDK_ERRLOG("DIF error detected. type=%d, offset=%" PRIu32 "\n",
2949 : err_blk.err_type, err_blk.err_offset);
2950 0 : rsp->status.sct = SPDK_NVME_SCT_MEDIA_ERROR;
2951 0 : rsp->status.sc = nvmf_tcp_dif_error_to_compl_status(err_blk.err_type);
2952 0 : nvmf_tcp_send_capsule_resp_pdu(tcp_req, tqpair);
2953 0 : return;
2954 : }
2955 : }
2956 :
2957 4 : rsp_pdu->rw_offset += c2h_data->datal;
2958 4 : nvmf_tcp_qpair_write_req_pdu(tqpair, tcp_req, nvmf_tcp_pdu_c2h_data_complete, tcp_req);
2959 : }
2960 :
2961 : static void
2962 4 : nvmf_tcp_send_c2h_data(struct spdk_nvmf_tcp_qpair *tqpair,
2963 : struct spdk_nvmf_tcp_req *tcp_req)
2964 : {
2965 4 : nvmf_tcp_req_pdu_init(tcp_req);
2966 4 : _nvmf_tcp_send_c2h_data(tqpair, tcp_req);
2967 4 : }
2968 :
2969 : static int
2970 1 : request_transfer_out(struct spdk_nvmf_request *req)
2971 : {
2972 : struct spdk_nvmf_tcp_req *tcp_req;
2973 : struct spdk_nvmf_qpair *qpair;
2974 : struct spdk_nvmf_tcp_qpair *tqpair;
2975 : struct spdk_nvme_cpl *rsp;
2976 :
2977 1 : SPDK_DEBUGLOG(nvmf_tcp, "enter\n");
2978 :
2979 1 : qpair = req->qpair;
2980 1 : rsp = &req->rsp->nvme_cpl;
2981 1 : tcp_req = SPDK_CONTAINEROF(req, struct spdk_nvmf_tcp_req, req);
2982 :
2983 : /* Advance our sq_head pointer */
2984 1 : if (qpair->sq_head == qpair->sq_head_max) {
2985 1 : qpair->sq_head = 0;
2986 : } else {
2987 0 : qpair->sq_head++;
2988 : }
2989 1 : rsp->sqhd = qpair->sq_head;
2990 :
2991 1 : tqpair = SPDK_CONTAINEROF(tcp_req->req.qpair, struct spdk_nvmf_tcp_qpair, qpair);
2992 1 : nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_TRANSFERRING_CONTROLLER_TO_HOST);
2993 1 : if (rsp->status.sc == SPDK_NVME_SC_SUCCESS && req->xfer == SPDK_NVME_DATA_CONTROLLER_TO_HOST) {
2994 0 : nvmf_tcp_send_c2h_data(tqpair, tcp_req);
2995 : } else {
2996 1 : nvmf_tcp_send_capsule_resp_pdu(tcp_req, tqpair);
2997 : }
2998 :
2999 1 : return 0;
3000 : }
3001 :
3002 : static void
3003 4 : nvmf_tcp_check_fused_ordering(struct spdk_nvmf_tcp_transport *ttransport,
3004 : struct spdk_nvmf_tcp_qpair *tqpair,
3005 : struct spdk_nvmf_tcp_req *tcp_req)
3006 : {
3007 : enum spdk_nvme_cmd_fuse last, next;
3008 :
3009 4 : last = tqpair->fused_first ? tqpair->fused_first->cmd.fuse : SPDK_NVME_CMD_FUSE_NONE;
3010 4 : next = tcp_req->cmd.fuse;
3011 :
3012 4 : assert(last != SPDK_NVME_CMD_FUSE_SECOND);
3013 :
3014 4 : if (spdk_likely(last == SPDK_NVME_CMD_FUSE_NONE && next == SPDK_NVME_CMD_FUSE_NONE)) {
3015 4 : return;
3016 : }
3017 :
3018 0 : if (last == SPDK_NVME_CMD_FUSE_FIRST) {
3019 0 : if (next == SPDK_NVME_CMD_FUSE_SECOND) {
3020 : /* This is a valid pair of fused commands. Point them at each other
3021 : * so they can be submitted consecutively once ready to be executed.
3022 : */
3023 0 : tqpair->fused_first->fused_pair = tcp_req;
3024 0 : tcp_req->fused_pair = tqpair->fused_first;
3025 0 : tqpair->fused_first = NULL;
3026 0 : return;
3027 : } else {
3028 : /* Mark the last req as failed since it wasn't followed by a SECOND. */
3029 0 : tqpair->fused_first->fused_failed = true;
3030 :
3031 : /*
3032 : * If the last req is in READY_TO_EXECUTE state, then call
3033 : * nvmf_tcp_req_process(), otherwise nothing else will kick it.
3034 : */
3035 0 : if (tqpair->fused_first->state == TCP_REQUEST_STATE_READY_TO_EXECUTE) {
3036 0 : nvmf_tcp_req_process(ttransport, tqpair->fused_first);
3037 : }
3038 :
3039 0 : tqpair->fused_first = NULL;
3040 : }
3041 : }
3042 :
3043 0 : if (next == SPDK_NVME_CMD_FUSE_FIRST) {
3044 : /* Set tqpair->fused_first here so that we know to check that the next request
3045 : * is a SECOND (and to fail this one if it isn't).
3046 : */
3047 0 : tqpair->fused_first = tcp_req;
3048 0 : } else if (next == SPDK_NVME_CMD_FUSE_SECOND) {
3049 : /* Mark this req failed since it is a SECOND and the last one was not a FIRST. */
3050 0 : tcp_req->fused_failed = true;
3051 : }
3052 : }
3053 :
3054 : static bool
3055 5 : nvmf_tcp_req_process(struct spdk_nvmf_tcp_transport *ttransport,
3056 : struct spdk_nvmf_tcp_req *tcp_req)
3057 : {
3058 : struct spdk_nvmf_tcp_qpair *tqpair;
3059 : uint32_t plen;
3060 : struct nvme_tcp_pdu *pdu;
3061 : enum spdk_nvmf_tcp_req_state prev_state;
3062 5 : bool progress = false;
3063 5 : struct spdk_nvmf_transport *transport = &ttransport->transport;
3064 : struct spdk_nvmf_transport_poll_group *group;
3065 : struct spdk_nvmf_tcp_poll_group *tgroup;
3066 :
3067 5 : tqpair = SPDK_CONTAINEROF(tcp_req->req.qpair, struct spdk_nvmf_tcp_qpair, qpair);
3068 5 : group = &tqpair->group->group;
3069 5 : assert(tcp_req->state != TCP_REQUEST_STATE_FREE);
3070 :
3071 : /* If the qpair is not active, we need to abort the outstanding requests. */
3072 5 : if (!spdk_nvmf_qpair_is_active(&tqpair->qpair)) {
3073 0 : if (tcp_req->state == TCP_REQUEST_STATE_NEED_BUFFER) {
3074 0 : nvmf_tcp_request_get_buffers_abort(tcp_req);
3075 : }
3076 0 : nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_COMPLETED);
3077 : }
3078 :
3079 : /* The loop here is to allow for several back-to-back state changes. */
3080 : do {
3081 13 : prev_state = tcp_req->state;
3082 :
3083 13 : SPDK_DEBUGLOG(nvmf_tcp, "Request %p entering state %d on tqpair=%p\n", tcp_req, prev_state,
3084 : tqpair);
3085 :
3086 13 : switch (tcp_req->state) {
3087 0 : case TCP_REQUEST_STATE_FREE:
3088 : /* Some external code must kick a request into TCP_REQUEST_STATE_NEW
3089 : * to escape this state. */
3090 0 : break;
3091 4 : case TCP_REQUEST_STATE_NEW:
3092 4 : spdk_trace_record(TRACE_TCP_REQUEST_STATE_NEW, tqpair->qpair.trace_id, 0, (uintptr_t)tcp_req,
3093 : tqpair->qpair.queue_depth);
3094 :
3095 : /* copy the cmd from the receive pdu */
3096 4 : tcp_req->cmd = tqpair->pdu_in_progress->hdr.capsule_cmd.ccsqe;
3097 :
3098 4 : if (spdk_unlikely(spdk_nvmf_request_get_dif_ctx(&tcp_req->req, &tcp_req->req.dif.dif_ctx))) {
3099 0 : tcp_req->req.dif_enabled = true;
3100 0 : tqpair->pdu_in_progress->dif_ctx = &tcp_req->req.dif.dif_ctx;
3101 : }
3102 :
3103 4 : nvmf_tcp_check_fused_ordering(ttransport, tqpair, tcp_req);
3104 :
3105 : /* The next state transition depends on the data transfer needs of this request. */
3106 4 : tcp_req->req.xfer = spdk_nvmf_req_get_xfer(&tcp_req->req);
3107 :
3108 4 : if (spdk_unlikely(tcp_req->req.xfer == SPDK_NVME_DATA_BIDIRECTIONAL)) {
3109 1 : nvmf_tcp_req_set_cpl(tcp_req, SPDK_NVME_SCT_GENERIC, SPDK_NVME_SC_INVALID_OPCODE);
3110 1 : nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_READY);
3111 1 : nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_READY_TO_COMPLETE);
3112 1 : SPDK_DEBUGLOG(nvmf_tcp, "Request %p: invalid xfer type (BIDIRECTIONAL)\n", tcp_req);
3113 1 : break;
3114 : }
3115 :
3116 : /* If no data to transfer, ready to execute. */
3117 3 : if (tcp_req->req.xfer == SPDK_NVME_DATA_NONE) {
3118 : /* Reset the tqpair receiving pdu state */
3119 0 : nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_READY);
3120 0 : nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_READY_TO_EXECUTE);
3121 0 : break;
3122 : }
3123 :
3124 3 : pdu = tqpair->pdu_in_progress;
3125 3 : plen = pdu->hdr.common.hlen;
3126 3 : if (tqpair->host_hdgst_enable) {
3127 0 : plen += SPDK_NVME_TCP_DIGEST_LEN;
3128 : }
3129 3 : if (pdu->hdr.common.plen != plen) {
3130 3 : tcp_req->has_in_capsule_data = true;
3131 : } else {
3132 : /* Data is transmitted by C2H PDUs */
3133 0 : nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_READY);
3134 : }
3135 :
3136 3 : nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_NEED_BUFFER);
3137 3 : break;
3138 3 : case TCP_REQUEST_STATE_NEED_BUFFER:
3139 3 : spdk_trace_record(TRACE_TCP_REQUEST_STATE_NEED_BUFFER, tqpair->qpair.trace_id, 0,
3140 : (uintptr_t)tcp_req);
3141 :
3142 3 : assert(tcp_req->req.xfer != SPDK_NVME_DATA_NONE);
3143 :
3144 : /* Try to get a data buffer */
3145 3 : nvmf_tcp_req_parse_sgl(tcp_req, transport, group);
3146 3 : break;
3147 2 : case TCP_REQUEST_STATE_HAVE_BUFFER:
3148 2 : spdk_trace_record(TRACE_TCP_REQUEST_STATE_HAVE_BUFFER, tqpair->qpair.trace_id, 0,
3149 : (uintptr_t)tcp_req);
3150 : /* Get a zcopy buffer if the request can be serviced through zcopy */
3151 2 : if (spdk_nvmf_request_using_zcopy(&tcp_req->req)) {
3152 0 : if (spdk_unlikely(tcp_req->req.dif_enabled)) {
3153 0 : assert(tcp_req->req.dif.elba_length >= tcp_req->req.length);
3154 0 : tcp_req->req.length = tcp_req->req.dif.elba_length;
3155 : }
3156 :
3157 0 : nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_AWAITING_ZCOPY_START);
3158 0 : spdk_nvmf_request_zcopy_start(&tcp_req->req);
3159 0 : break;
3160 : }
3161 :
3162 2 : assert(tcp_req->req.iovcnt > 0);
3163 :
3164 : /* If data is transferring from host to controller, we need to do a transfer from the host. */
3165 2 : if (tcp_req->req.xfer == SPDK_NVME_DATA_HOST_TO_CONTROLLER) {
3166 2 : if (tcp_req->req.data_from_pool) {
3167 0 : SPDK_DEBUGLOG(nvmf_tcp, "Sending R2T for tcp_req(%p) on tqpair=%p\n", tcp_req, tqpair);
3168 0 : nvmf_tcp_send_r2t_pdu(tqpair, tcp_req);
3169 : } else {
3170 : struct nvme_tcp_pdu *pdu;
3171 :
3172 2 : nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_TRANSFERRING_HOST_TO_CONTROLLER);
3173 :
3174 2 : pdu = tqpair->pdu_in_progress;
3175 2 : SPDK_DEBUGLOG(nvmf_tcp, "Not need to send r2t for tcp_req(%p) on tqpair=%p\n", tcp_req,
3176 : tqpair);
3177 : /* No need to send r2t, contained in the capsuled data */
3178 2 : nvme_tcp_pdu_set_data_buf(pdu, tcp_req->req.iov, tcp_req->req.iovcnt,
3179 : 0, tcp_req->req.length);
3180 2 : nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_PAYLOAD);
3181 : }
3182 2 : break;
3183 : }
3184 :
3185 0 : nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_READY_TO_EXECUTE);
3186 0 : break;
3187 0 : case TCP_REQUEST_STATE_AWAITING_ZCOPY_START:
3188 0 : spdk_trace_record(TRACE_TCP_REQUEST_STATE_AWAIT_ZCOPY_START, tqpair->qpair.trace_id, 0,
3189 : (uintptr_t)tcp_req);
3190 : /* Some external code must kick a request into TCP_REQUEST_STATE_ZCOPY_START_COMPLETED
3191 : * to escape this state. */
3192 0 : break;
3193 0 : case TCP_REQUEST_STATE_ZCOPY_START_COMPLETED:
3194 0 : spdk_trace_record(TRACE_TCP_REQUEST_STATE_ZCOPY_START_COMPLETED, tqpair->qpair.trace_id, 0,
3195 : (uintptr_t)tcp_req);
3196 0 : if (spdk_unlikely(spdk_nvme_cpl_is_error(&tcp_req->req.rsp->nvme_cpl))) {
3197 0 : SPDK_DEBUGLOG(nvmf_tcp, "Zero-copy start failed for tcp_req(%p) on tqpair=%p\n",
3198 : tcp_req, tqpair);
3199 0 : nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_READY_TO_COMPLETE);
3200 0 : break;
3201 : }
3202 0 : if (tcp_req->req.xfer == SPDK_NVME_DATA_HOST_TO_CONTROLLER) {
3203 0 : SPDK_DEBUGLOG(nvmf_tcp, "Sending R2T for tcp_req(%p) on tqpair=%p\n", tcp_req, tqpair);
3204 0 : nvmf_tcp_send_r2t_pdu(tqpair, tcp_req);
3205 : } else {
3206 0 : nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_EXECUTED);
3207 : }
3208 0 : break;
3209 0 : case TCP_REQUEST_STATE_AWAITING_R2T_ACK:
3210 0 : spdk_trace_record(TRACE_TCP_REQUEST_STATE_AWAIT_R2T_ACK, tqpair->qpair.trace_id, 0,
3211 : (uintptr_t)tcp_req);
3212 : /* The R2T completion or the h2c data incoming will kick it out of this state. */
3213 0 : break;
3214 2 : case TCP_REQUEST_STATE_TRANSFERRING_HOST_TO_CONTROLLER:
3215 :
3216 2 : spdk_trace_record(TRACE_TCP_REQUEST_STATE_TRANSFERRING_HOST_TO_CONTROLLER, tqpair->qpair.trace_id,
3217 : 0, (uintptr_t)tcp_req);
3218 : /* Some external code must kick a request into TCP_REQUEST_STATE_READY_TO_EXECUTE
3219 : * to escape this state. */
3220 2 : break;
3221 0 : case TCP_REQUEST_STATE_READY_TO_EXECUTE:
3222 0 : spdk_trace_record(TRACE_TCP_REQUEST_STATE_READY_TO_EXECUTE, tqpair->qpair.trace_id, 0,
3223 : (uintptr_t)tcp_req);
3224 :
3225 0 : if (spdk_unlikely(tcp_req->req.dif_enabled)) {
3226 0 : assert(tcp_req->req.dif.elba_length >= tcp_req->req.length);
3227 0 : tcp_req->req.length = tcp_req->req.dif.elba_length;
3228 : }
3229 :
3230 0 : if (tcp_req->cmd.fuse != SPDK_NVME_CMD_FUSE_NONE) {
3231 0 : if (tcp_req->fused_failed) {
3232 : /* This request failed FUSED semantics. Fail it immediately, without
3233 : * even sending it to the target layer.
3234 : */
3235 0 : nvmf_tcp_req_set_cpl(tcp_req, SPDK_NVME_SCT_GENERIC, SPDK_NVME_SC_ABORTED_MISSING_FUSED);
3236 0 : nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_READY_TO_COMPLETE);
3237 0 : break;
3238 : }
3239 :
3240 0 : if (tcp_req->fused_pair == NULL ||
3241 0 : tcp_req->fused_pair->state != TCP_REQUEST_STATE_READY_TO_EXECUTE) {
3242 : /* This request is ready to execute, but either we don't know yet if it's
3243 : * valid - i.e. this is a FIRST but we haven't received the next request yet),
3244 : * or the other request of this fused pair isn't ready to execute. So
3245 : * break here and this request will get processed later either when the
3246 : * other request is ready or we find that this request isn't valid.
3247 : */
3248 : break;
3249 : }
3250 : }
3251 :
3252 0 : if (!spdk_nvmf_request_using_zcopy(&tcp_req->req)) {
3253 0 : nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_EXECUTING);
3254 : /* If we get to this point, and this request is a fused command, we know that
3255 : * it is part of a valid sequence (FIRST followed by a SECOND) and that both
3256 : * requests are READY_TO_EXECUTE. So call spdk_nvmf_request_exec() both on this
3257 : * request, and the other request of the fused pair, in the correct order.
3258 : * Also clear the ->fused_pair pointers on both requests, since after this point
3259 : * we no longer need to maintain the relationship between these two requests.
3260 : */
3261 0 : if (tcp_req->cmd.fuse == SPDK_NVME_CMD_FUSE_SECOND) {
3262 0 : assert(tcp_req->fused_pair != NULL);
3263 0 : assert(tcp_req->fused_pair->fused_pair == tcp_req);
3264 0 : nvmf_tcp_req_set_state(tcp_req->fused_pair, TCP_REQUEST_STATE_EXECUTING);
3265 0 : spdk_nvmf_request_exec(&tcp_req->fused_pair->req);
3266 0 : tcp_req->fused_pair->fused_pair = NULL;
3267 0 : tcp_req->fused_pair = NULL;
3268 : }
3269 0 : spdk_nvmf_request_exec(&tcp_req->req);
3270 0 : if (tcp_req->cmd.fuse == SPDK_NVME_CMD_FUSE_FIRST) {
3271 0 : assert(tcp_req->fused_pair != NULL);
3272 0 : assert(tcp_req->fused_pair->fused_pair == tcp_req);
3273 0 : nvmf_tcp_req_set_state(tcp_req->fused_pair, TCP_REQUEST_STATE_EXECUTING);
3274 0 : spdk_nvmf_request_exec(&tcp_req->fused_pair->req);
3275 0 : tcp_req->fused_pair->fused_pair = NULL;
3276 0 : tcp_req->fused_pair = NULL;
3277 : }
3278 : } else {
3279 : /* For zero-copy, only requests with data coming from host to the
3280 : * controller can end up here. */
3281 0 : assert(tcp_req->req.xfer == SPDK_NVME_DATA_HOST_TO_CONTROLLER);
3282 0 : nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_AWAITING_ZCOPY_COMMIT);
3283 0 : spdk_nvmf_request_zcopy_end(&tcp_req->req, true);
3284 : }
3285 :
3286 0 : break;
3287 0 : case TCP_REQUEST_STATE_EXECUTING:
3288 0 : spdk_trace_record(TRACE_TCP_REQUEST_STATE_EXECUTING, tqpair->qpair.trace_id, 0, (uintptr_t)tcp_req);
3289 : /* Some external code must kick a request into TCP_REQUEST_STATE_EXECUTED
3290 : * to escape this state. */
3291 0 : break;
3292 0 : case TCP_REQUEST_STATE_AWAITING_ZCOPY_COMMIT:
3293 0 : spdk_trace_record(TRACE_TCP_REQUEST_STATE_AWAIT_ZCOPY_COMMIT, tqpair->qpair.trace_id, 0,
3294 : (uintptr_t)tcp_req);
3295 : /* Some external code must kick a request into TCP_REQUEST_STATE_EXECUTED
3296 : * to escape this state. */
3297 0 : break;
3298 0 : case TCP_REQUEST_STATE_EXECUTED:
3299 0 : spdk_trace_record(TRACE_TCP_REQUEST_STATE_EXECUTED, tqpair->qpair.trace_id, 0, (uintptr_t)tcp_req);
3300 :
3301 0 : if (spdk_unlikely(tcp_req->req.dif_enabled)) {
3302 0 : tcp_req->req.length = tcp_req->req.dif.orig_length;
3303 : }
3304 :
3305 0 : nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_READY_TO_COMPLETE);
3306 0 : break;
3307 1 : case TCP_REQUEST_STATE_READY_TO_COMPLETE:
3308 1 : spdk_trace_record(TRACE_TCP_REQUEST_STATE_READY_TO_COMPLETE, tqpair->qpair.trace_id, 0,
3309 : (uintptr_t)tcp_req);
3310 1 : if (request_transfer_out(&tcp_req->req) != 0) {
3311 0 : assert(0); /* No good way to handle this currently */
3312 : }
3313 1 : break;
3314 1 : case TCP_REQUEST_STATE_TRANSFERRING_CONTROLLER_TO_HOST:
3315 1 : spdk_trace_record(TRACE_TCP_REQUEST_STATE_TRANSFERRING_CONTROLLER_TO_HOST, tqpair->qpair.trace_id,
3316 : 0, (uintptr_t)tcp_req);
3317 : /* Some external code must kick a request into TCP_REQUEST_STATE_COMPLETED
3318 : * to escape this state. */
3319 1 : break;
3320 0 : case TCP_REQUEST_STATE_AWAITING_ZCOPY_RELEASE:
3321 0 : spdk_trace_record(TRACE_TCP_REQUEST_STATE_AWAIT_ZCOPY_RELEASE, tqpair->qpair.trace_id, 0,
3322 : (uintptr_t)tcp_req);
3323 : /* Some external code must kick a request into TCP_REQUEST_STATE_COMPLETED
3324 : * to escape this state. */
3325 0 : break;
3326 0 : case TCP_REQUEST_STATE_COMPLETED:
3327 0 : spdk_trace_record(TRACE_TCP_REQUEST_STATE_COMPLETED, tqpair->qpair.trace_id, 0, (uintptr_t)tcp_req,
3328 : tqpair->qpair.queue_depth);
3329 : /* If there's an outstanding PDU sent to the host, the request is completed
3330 : * due to the qpair being disconnected. We must delay the completion until
3331 : * that write is done to avoid freeing the request twice. */
3332 0 : if (spdk_unlikely(tcp_req->pdu_in_use)) {
3333 0 : SPDK_DEBUGLOG(nvmf_tcp, "Delaying completion due to outstanding "
3334 : "write on req=%p\n", tcp_req);
3335 : /* This can only happen for zcopy requests */
3336 0 : assert(spdk_nvmf_request_using_zcopy(&tcp_req->req));
3337 0 : assert(!spdk_nvmf_qpair_is_active(&tqpair->qpair));
3338 0 : break;
3339 : }
3340 :
3341 0 : if (tcp_req->req.data_from_pool) {
3342 0 : spdk_nvmf_request_free_buffers(&tcp_req->req, group, transport);
3343 0 : } else if (spdk_unlikely(tcp_req->has_in_capsule_data &&
3344 : (tcp_req->cmd.opc == SPDK_NVME_OPC_FABRIC ||
3345 : tqpair->qpair.qid == 0) && tcp_req->req.length > transport->opts.in_capsule_data_size)) {
3346 0 : tgroup = SPDK_CONTAINEROF(group, struct spdk_nvmf_tcp_poll_group, group);
3347 0 : assert(tgroup->control_msg_list);
3348 0 : SPDK_DEBUGLOG(nvmf_tcp, "Put buf to control msg list\n");
3349 0 : nvmf_tcp_control_msg_put(tgroup->control_msg_list,
3350 : tcp_req->req.iov[0].iov_base);
3351 0 : } else if (tcp_req->req.zcopy_bdev_io != NULL) {
3352 : /* If the request has an unreleased zcopy bdev_io, it's either a
3353 : * read, a failed write, or the qpair is being disconnected */
3354 0 : assert(spdk_nvmf_request_using_zcopy(&tcp_req->req));
3355 0 : assert(tcp_req->req.xfer == SPDK_NVME_DATA_CONTROLLER_TO_HOST ||
3356 : spdk_nvme_cpl_is_error(&tcp_req->req.rsp->nvme_cpl) ||
3357 : !spdk_nvmf_qpair_is_active(&tqpair->qpair));
3358 0 : nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_AWAITING_ZCOPY_RELEASE);
3359 0 : spdk_nvmf_request_zcopy_end(&tcp_req->req, false);
3360 0 : break;
3361 : }
3362 0 : tcp_req->req.length = 0;
3363 0 : tcp_req->req.iovcnt = 0;
3364 0 : tcp_req->fused_failed = false;
3365 0 : if (tcp_req->fused_pair) {
3366 : /* This req was part of a valid fused pair, but failed before it got to
3367 : * READ_TO_EXECUTE state. This means we need to fail the other request
3368 : * in the pair, because it is no longer part of a valid pair. If the pair
3369 : * already reached READY_TO_EXECUTE state, we need to kick it.
3370 : */
3371 0 : tcp_req->fused_pair->fused_failed = true;
3372 0 : if (tcp_req->fused_pair->state == TCP_REQUEST_STATE_READY_TO_EXECUTE) {
3373 0 : nvmf_tcp_req_process(ttransport, tcp_req->fused_pair);
3374 : }
3375 0 : tcp_req->fused_pair = NULL;
3376 : }
3377 :
3378 0 : nvmf_tcp_req_put(tqpair, tcp_req);
3379 0 : break;
3380 0 : case TCP_REQUEST_NUM_STATES:
3381 : default:
3382 0 : assert(0);
3383 : break;
3384 : }
3385 :
3386 13 : if (tcp_req->state != prev_state) {
3387 8 : progress = true;
3388 : }
3389 13 : } while (tcp_req->state != prev_state);
3390 :
3391 5 : return progress;
3392 : }
3393 :
3394 : static void
3395 0 : tcp_sock_cb(void *arg)
3396 : {
3397 0 : struct spdk_nvmf_tcp_qpair *tqpair = arg;
3398 : int rc;
3399 :
3400 0 : assert(tqpair != NULL);
3401 0 : rc = nvmf_tcp_sock_process(tqpair);
3402 :
3403 : /* If there was a new socket error, disconnect */
3404 0 : if (rc < 0) {
3405 0 : nvmf_tcp_qpair_disconnect(tqpair);
3406 : }
3407 0 : }
3408 :
3409 : static void
3410 0 : nvmf_tcp_sock_cb(void *arg, struct spdk_sock_group *group, struct spdk_sock *sock)
3411 : {
3412 0 : tcp_sock_cb(arg);
3413 0 : }
3414 :
3415 : static int
3416 0 : nvmf_tcp_poll_group_add(struct spdk_nvmf_transport_poll_group *group,
3417 : struct spdk_nvmf_qpair *qpair)
3418 : {
3419 : struct spdk_nvmf_tcp_poll_group *tgroup;
3420 : struct spdk_nvmf_tcp_qpair *tqpair;
3421 : int rc;
3422 :
3423 0 : tgroup = SPDK_CONTAINEROF(group, struct spdk_nvmf_tcp_poll_group, group);
3424 0 : tqpair = SPDK_CONTAINEROF(qpair, struct spdk_nvmf_tcp_qpair, qpair);
3425 :
3426 0 : rc = nvmf_tcp_qpair_sock_init(tqpair);
3427 0 : if (rc != 0) {
3428 0 : SPDK_ERRLOG("Cannot set sock opt for tqpair=%p\n", tqpair);
3429 0 : return -1;
3430 : }
3431 :
3432 0 : rc = nvmf_tcp_qpair_init(&tqpair->qpair);
3433 0 : if (rc < 0) {
3434 0 : SPDK_ERRLOG("Cannot init tqpair=%p\n", tqpair);
3435 0 : return -1;
3436 : }
3437 :
3438 0 : rc = nvmf_tcp_qpair_init_mem_resource(tqpair);
3439 0 : if (rc < 0) {
3440 0 : SPDK_ERRLOG("Cannot init memory resource info for tqpair=%p\n", tqpair);
3441 0 : return -1;
3442 : }
3443 :
3444 0 : rc = spdk_sock_group_add_sock(tgroup->sock_group, tqpair->sock,
3445 : nvmf_tcp_sock_cb, tqpair);
3446 0 : if (rc != 0) {
3447 0 : SPDK_ERRLOG("Could not add sock to sock_group: %s (%d)\n",
3448 : spdk_strerror(errno), errno);
3449 0 : return -1;
3450 : }
3451 :
3452 0 : tqpair->group = tgroup;
3453 0 : nvmf_tcp_qpair_set_state(tqpair, NVMF_TCP_QPAIR_STATE_INVALID);
3454 0 : TAILQ_INSERT_TAIL(&tgroup->qpairs, tqpair, link);
3455 :
3456 0 : return 0;
3457 : }
3458 :
3459 : static int
3460 0 : nvmf_tcp_poll_group_remove(struct spdk_nvmf_transport_poll_group *group,
3461 : struct spdk_nvmf_qpair *qpair)
3462 : {
3463 : struct spdk_nvmf_tcp_poll_group *tgroup;
3464 : struct spdk_nvmf_tcp_qpair *tqpair;
3465 : int rc;
3466 :
3467 0 : tgroup = SPDK_CONTAINEROF(group, struct spdk_nvmf_tcp_poll_group, group);
3468 0 : tqpair = SPDK_CONTAINEROF(qpair, struct spdk_nvmf_tcp_qpair, qpair);
3469 :
3470 0 : assert(tqpair->group == tgroup);
3471 :
3472 0 : SPDK_DEBUGLOG(nvmf_tcp, "remove tqpair=%p from the tgroup=%p\n", tqpair, tgroup);
3473 0 : if (tqpair->recv_state == NVME_TCP_PDU_RECV_STATE_AWAIT_REQ) {
3474 : /* Change the state to move the qpair from the await_req list to the main list
3475 : * and prevent adding it again later by nvmf_tcp_qpair_set_recv_state() */
3476 0 : nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_QUIESCING);
3477 : }
3478 0 : TAILQ_REMOVE(&tgroup->qpairs, tqpair, link);
3479 :
3480 : /* Try to force out any pending writes */
3481 0 : spdk_sock_flush(tqpair->sock);
3482 :
3483 0 : rc = spdk_sock_group_remove_sock(tgroup->sock_group, tqpair->sock);
3484 0 : if (rc != 0) {
3485 0 : SPDK_ERRLOG("Could not remove sock from sock_group: %s (%d)\n",
3486 : spdk_strerror(errno), errno);
3487 : }
3488 :
3489 0 : return rc;
3490 : }
3491 :
3492 : static int
3493 0 : nvmf_tcp_req_complete(struct spdk_nvmf_request *req)
3494 : {
3495 : struct spdk_nvmf_tcp_transport *ttransport;
3496 : struct spdk_nvmf_tcp_req *tcp_req;
3497 : struct spdk_nvmf_tcp_qpair *tqpair;
3498 :
3499 0 : ttransport = SPDK_CONTAINEROF(req->qpair->transport, struct spdk_nvmf_tcp_transport, transport);
3500 0 : tcp_req = SPDK_CONTAINEROF(req, struct spdk_nvmf_tcp_req, req);
3501 0 : tqpair = SPDK_CONTAINEROF(req->qpair, struct spdk_nvmf_tcp_qpair, qpair);
3502 :
3503 0 : switch (tcp_req->state) {
3504 0 : case TCP_REQUEST_STATE_EXECUTING:
3505 : case TCP_REQUEST_STATE_AWAITING_ZCOPY_COMMIT:
3506 0 : nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_EXECUTED);
3507 0 : break;
3508 0 : case TCP_REQUEST_STATE_AWAITING_ZCOPY_START:
3509 0 : nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_ZCOPY_START_COMPLETED);
3510 0 : break;
3511 0 : case TCP_REQUEST_STATE_AWAITING_ZCOPY_RELEASE:
3512 0 : nvmf_tcp_req_set_state(tcp_req, TCP_REQUEST_STATE_COMPLETED);
3513 : /* In the interrupt mode it's possible that all responses are already written out over
3514 : * the socket but zero-copy buffers are still not released. In that case there won't be
3515 : * any event to trigger further socket processing. Send msg to a thread to avoid deadlock.
3516 : */
3517 0 : if (spdk_unlikely(spdk_interrupt_mode_is_enabled() &&
3518 : tqpair->recv_state == NVME_TCP_PDU_RECV_STATE_AWAIT_REQ &&
3519 : spdk_nvmf_qpair_is_active(&tqpair->qpair))) {
3520 0 : spdk_thread_send_msg(spdk_get_thread(), tcp_sock_cb, tqpair);
3521 : }
3522 0 : break;
3523 0 : default:
3524 0 : SPDK_ERRLOG("Unexpected request state %d (cntlid:%d, qid:%d)\n",
3525 : tcp_req->state, req->qpair->ctrlr->cntlid, req->qpair->qid);
3526 0 : assert(0 && "Unexpected request state");
3527 : break;
3528 : }
3529 :
3530 0 : nvmf_tcp_req_process(ttransport, tcp_req);
3531 :
3532 0 : return 0;
3533 : }
3534 :
3535 : static void
3536 0 : nvmf_tcp_close_qpair(struct spdk_nvmf_qpair *qpair,
3537 : spdk_nvmf_transport_qpair_fini_cb cb_fn, void *cb_arg)
3538 : {
3539 : struct spdk_nvmf_tcp_qpair *tqpair;
3540 :
3541 0 : SPDK_DEBUGLOG(nvmf_tcp, "Qpair: %p\n", qpair);
3542 :
3543 0 : tqpair = SPDK_CONTAINEROF(qpair, struct spdk_nvmf_tcp_qpair, qpair);
3544 :
3545 0 : assert(tqpair->fini_cb_fn == NULL);
3546 0 : tqpair->fini_cb_fn = cb_fn;
3547 0 : tqpair->fini_cb_arg = cb_arg;
3548 :
3549 0 : nvmf_tcp_qpair_set_state(tqpair, NVMF_TCP_QPAIR_STATE_EXITED);
3550 0 : nvmf_tcp_qpair_destroy(tqpair);
3551 0 : }
3552 :
3553 : static int
3554 0 : nvmf_tcp_poll_group_poll(struct spdk_nvmf_transport_poll_group *group)
3555 : {
3556 : struct spdk_nvmf_tcp_poll_group *tgroup;
3557 0 : int num_events, rc = 0, rc2;
3558 : struct spdk_nvmf_tcp_qpair *tqpair, *tqpair_tmp;
3559 :
3560 0 : tgroup = SPDK_CONTAINEROF(group, struct spdk_nvmf_tcp_poll_group, group);
3561 :
3562 0 : if (spdk_unlikely(TAILQ_EMPTY(&tgroup->qpairs) && TAILQ_EMPTY(&tgroup->await_req))) {
3563 0 : return 0;
3564 : }
3565 :
3566 0 : num_events = spdk_sock_group_poll(tgroup->sock_group);
3567 0 : if (spdk_unlikely(num_events < 0)) {
3568 0 : SPDK_ERRLOG("Failed to poll sock_group=%p\n", tgroup->sock_group);
3569 : }
3570 :
3571 0 : TAILQ_FOREACH_SAFE(tqpair, &tgroup->await_req, link, tqpair_tmp) {
3572 0 : rc2 = nvmf_tcp_sock_process(tqpair);
3573 :
3574 : /* If there was a new socket error, disconnect */
3575 0 : if (spdk_unlikely(rc2 < 0)) {
3576 0 : nvmf_tcp_qpair_disconnect(tqpair);
3577 0 : if (rc == 0) {
3578 0 : rc = rc2;
3579 : }
3580 : }
3581 : }
3582 :
3583 0 : return rc == 0 ? num_events : rc;
3584 : }
3585 :
3586 : static int
3587 0 : nvmf_tcp_qpair_get_trid(struct spdk_nvmf_qpair *qpair,
3588 : struct spdk_nvme_transport_id *trid, bool peer)
3589 : {
3590 : struct spdk_nvmf_tcp_qpair *tqpair;
3591 : uint16_t port;
3592 :
3593 0 : tqpair = SPDK_CONTAINEROF(qpair, struct spdk_nvmf_tcp_qpair, qpair);
3594 0 : spdk_nvme_trid_populate_transport(trid, SPDK_NVME_TRANSPORT_TCP);
3595 :
3596 0 : if (peer) {
3597 0 : snprintf(trid->traddr, sizeof(trid->traddr), "%s", tqpair->initiator_addr);
3598 0 : port = tqpair->initiator_port;
3599 : } else {
3600 0 : snprintf(trid->traddr, sizeof(trid->traddr), "%s", tqpair->target_addr);
3601 0 : port = tqpair->target_port;
3602 : }
3603 :
3604 0 : if (spdk_sock_is_ipv4(tqpair->sock)) {
3605 0 : trid->adrfam = SPDK_NVMF_ADRFAM_IPV4;
3606 0 : } else if (spdk_sock_is_ipv6(tqpair->sock)) {
3607 0 : trid->adrfam = SPDK_NVMF_ADRFAM_IPV6;
3608 : } else {
3609 0 : return -1;
3610 : }
3611 :
3612 0 : snprintf(trid->trsvcid, sizeof(trid->trsvcid), "%d", port);
3613 0 : return 0;
3614 : }
3615 :
3616 : static int
3617 0 : nvmf_tcp_qpair_get_local_trid(struct spdk_nvmf_qpair *qpair,
3618 : struct spdk_nvme_transport_id *trid)
3619 : {
3620 0 : return nvmf_tcp_qpair_get_trid(qpair, trid, 0);
3621 : }
3622 :
3623 : static int
3624 0 : nvmf_tcp_qpair_get_peer_trid(struct spdk_nvmf_qpair *qpair,
3625 : struct spdk_nvme_transport_id *trid)
3626 : {
3627 0 : return nvmf_tcp_qpair_get_trid(qpair, trid, 1);
3628 : }
3629 :
3630 : static int
3631 0 : nvmf_tcp_qpair_get_listen_trid(struct spdk_nvmf_qpair *qpair,
3632 : struct spdk_nvme_transport_id *trid)
3633 : {
3634 0 : return nvmf_tcp_qpair_get_trid(qpair, trid, 0);
3635 : }
3636 :
3637 : static void
3638 0 : nvmf_tcp_req_set_abort_status(struct spdk_nvmf_request *req,
3639 : struct spdk_nvmf_tcp_req *tcp_req_to_abort)
3640 : {
3641 0 : nvmf_tcp_req_set_cpl(tcp_req_to_abort, SPDK_NVME_SCT_GENERIC, SPDK_NVME_SC_ABORTED_BY_REQUEST);
3642 0 : nvmf_tcp_req_set_state(tcp_req_to_abort, TCP_REQUEST_STATE_READY_TO_COMPLETE);
3643 :
3644 0 : req->rsp->nvme_cpl.cdw0 &= ~1U; /* Command was successfully aborted. */
3645 0 : }
3646 :
3647 : static int
3648 0 : _nvmf_tcp_qpair_abort_request(void *ctx)
3649 : {
3650 0 : struct spdk_nvmf_request *req = ctx;
3651 0 : struct spdk_nvmf_tcp_req *tcp_req_to_abort = SPDK_CONTAINEROF(req->req_to_abort,
3652 : struct spdk_nvmf_tcp_req, req);
3653 0 : struct spdk_nvmf_tcp_qpair *tqpair = SPDK_CONTAINEROF(req->req_to_abort->qpair,
3654 : struct spdk_nvmf_tcp_qpair, qpair);
3655 0 : struct spdk_nvmf_tcp_transport *ttransport = SPDK_CONTAINEROF(tqpair->qpair.transport,
3656 : struct spdk_nvmf_tcp_transport, transport);
3657 : int rc;
3658 :
3659 0 : spdk_poller_unregister(&req->poller);
3660 :
3661 0 : switch (tcp_req_to_abort->state) {
3662 0 : case TCP_REQUEST_STATE_EXECUTING:
3663 : case TCP_REQUEST_STATE_AWAITING_ZCOPY_START:
3664 : case TCP_REQUEST_STATE_AWAITING_ZCOPY_COMMIT:
3665 0 : rc = nvmf_ctrlr_abort_request(req);
3666 0 : if (rc == SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS) {
3667 0 : return SPDK_POLLER_BUSY;
3668 : }
3669 0 : break;
3670 :
3671 0 : case TCP_REQUEST_STATE_NEED_BUFFER:
3672 0 : nvmf_tcp_request_get_buffers_abort(tcp_req_to_abort);
3673 0 : nvmf_tcp_req_set_abort_status(req, tcp_req_to_abort);
3674 0 : nvmf_tcp_req_process(ttransport, tcp_req_to_abort);
3675 0 : break;
3676 :
3677 0 : case TCP_REQUEST_STATE_AWAITING_R2T_ACK:
3678 : case TCP_REQUEST_STATE_TRANSFERRING_HOST_TO_CONTROLLER:
3679 0 : if (spdk_get_ticks() < req->timeout_tsc) {
3680 0 : req->poller = SPDK_POLLER_REGISTER(_nvmf_tcp_qpair_abort_request, req, 0);
3681 0 : return SPDK_POLLER_BUSY;
3682 : }
3683 0 : break;
3684 :
3685 0 : default:
3686 : /* Requests in other states are either un-abortable (e.g.
3687 : * TRANSFERRING_CONTROLLER_TO_HOST) or should never end up here, as they're
3688 : * immediately transitioned to other states in nvmf_tcp_req_process() (e.g.
3689 : * READY_TO_EXECUTE). But it is fine to end up here, as we'll simply complete the
3690 : * abort request with the bit0 of dword0 set (command not aborted).
3691 : */
3692 0 : break;
3693 : }
3694 :
3695 0 : spdk_nvmf_request_complete(req);
3696 0 : return SPDK_POLLER_BUSY;
3697 : }
3698 :
3699 : static void
3700 0 : nvmf_tcp_qpair_abort_request(struct spdk_nvmf_qpair *qpair,
3701 : struct spdk_nvmf_request *req)
3702 : {
3703 : struct spdk_nvmf_tcp_qpair *tqpair;
3704 : struct spdk_nvmf_tcp_transport *ttransport;
3705 : struct spdk_nvmf_transport *transport;
3706 : uint16_t cid;
3707 : uint32_t i;
3708 0 : struct spdk_nvmf_tcp_req *tcp_req_to_abort = NULL;
3709 :
3710 0 : tqpair = SPDK_CONTAINEROF(qpair, struct spdk_nvmf_tcp_qpair, qpair);
3711 0 : ttransport = SPDK_CONTAINEROF(qpair->transport, struct spdk_nvmf_tcp_transport, transport);
3712 0 : transport = &ttransport->transport;
3713 :
3714 0 : cid = req->cmd->nvme_cmd.cdw10_bits.abort.cid;
3715 :
3716 0 : for (i = 0; i < tqpair->resource_count; i++) {
3717 0 : if (tqpair->reqs[i].state != TCP_REQUEST_STATE_FREE &&
3718 0 : tqpair->reqs[i].req.cmd->nvme_cmd.cid == cid) {
3719 0 : tcp_req_to_abort = &tqpair->reqs[i];
3720 0 : break;
3721 : }
3722 : }
3723 :
3724 0 : spdk_trace_record(TRACE_TCP_QP_ABORT_REQ, tqpair->qpair.trace_id, 0, (uintptr_t)req);
3725 :
3726 0 : if (tcp_req_to_abort == NULL) {
3727 0 : spdk_nvmf_request_complete(req);
3728 0 : return;
3729 : }
3730 :
3731 0 : req->req_to_abort = &tcp_req_to_abort->req;
3732 0 : req->timeout_tsc = spdk_get_ticks() +
3733 0 : transport->opts.abort_timeout_sec * spdk_get_ticks_hz();
3734 0 : req->poller = NULL;
3735 :
3736 0 : _nvmf_tcp_qpair_abort_request(req);
3737 : }
3738 :
3739 : struct tcp_subsystem_add_host_opts {
3740 : char *psk;
3741 : };
3742 :
3743 : static const struct spdk_json_object_decoder tcp_subsystem_add_host_opts_decoder[] = {
3744 : {"psk", offsetof(struct tcp_subsystem_add_host_opts, psk), spdk_json_decode_string, true},
3745 : };
3746 :
3747 : static int
3748 1 : nvmf_tcp_subsystem_add_host(struct spdk_nvmf_transport *transport,
3749 : const struct spdk_nvmf_subsystem *subsystem,
3750 : const char *hostnqn,
3751 : const struct spdk_json_val *transport_specific)
3752 : {
3753 1 : struct tcp_subsystem_add_host_opts opts;
3754 : struct spdk_nvmf_tcp_transport *ttransport;
3755 1 : struct tcp_psk_entry *tmp, *entry = NULL;
3756 1 : uint8_t psk_configured[SPDK_TLS_PSK_MAX_LEN] = {};
3757 1 : char psk_interchange[SPDK_TLS_PSK_MAX_LEN + 1] = {};
3758 : uint8_t tls_cipher_suite;
3759 1 : int rc = 0;
3760 1 : uint8_t psk_retained_hash;
3761 1 : uint64_t psk_configured_size;
3762 :
3763 1 : if (transport_specific == NULL) {
3764 0 : return 0;
3765 : }
3766 :
3767 1 : assert(transport != NULL);
3768 1 : assert(subsystem != NULL);
3769 :
3770 1 : memset(&opts, 0, sizeof(opts));
3771 :
3772 : /* Decode PSK (either name of a key or file path) */
3773 1 : if (spdk_json_decode_object_relaxed(transport_specific, tcp_subsystem_add_host_opts_decoder,
3774 : SPDK_COUNTOF(tcp_subsystem_add_host_opts_decoder), &opts)) {
3775 0 : SPDK_ERRLOG("spdk_json_decode_object failed\n");
3776 0 : return -EINVAL;
3777 : }
3778 :
3779 1 : if (opts.psk == NULL) {
3780 0 : return 0;
3781 : }
3782 :
3783 1 : entry = calloc(1, sizeof(struct tcp_psk_entry));
3784 1 : if (entry == NULL) {
3785 0 : SPDK_ERRLOG("Unable to allocate memory for PSK entry!\n");
3786 0 : rc = -ENOMEM;
3787 0 : goto end;
3788 : }
3789 :
3790 1 : entry->key = spdk_keyring_get_key(opts.psk);
3791 1 : if (entry->key == NULL) {
3792 0 : SPDK_ERRLOG("Key '%s' does not exist\n", opts.psk);
3793 0 : rc = -EINVAL;
3794 0 : goto end;
3795 : }
3796 :
3797 1 : rc = spdk_key_get_key(entry->key, psk_interchange, SPDK_TLS_PSK_MAX_LEN);
3798 1 : if (rc < 0) {
3799 0 : SPDK_ERRLOG("Failed to retrieve PSK '%s'\n", opts.psk);
3800 0 : rc = -EINVAL;
3801 0 : goto end;
3802 : }
3803 :
3804 : /* Parse PSK interchange to get length of base64 encoded data.
3805 : * This is then used to decide which cipher suite should be used
3806 : * to generate PSK identity and TLS PSK later on. */
3807 1 : rc = nvme_tcp_parse_interchange_psk(psk_interchange, psk_configured, sizeof(psk_configured),
3808 : &psk_configured_size, &psk_retained_hash);
3809 1 : if (rc < 0) {
3810 0 : SPDK_ERRLOG("Failed to parse PSK interchange!\n");
3811 0 : goto end;
3812 : }
3813 :
3814 : /* The Base64 string encodes the configured PSK (32 or 48 bytes binary).
3815 : * This check also ensures that psk_configured_size is smaller than
3816 : * psk_retained buffer size. */
3817 1 : if (psk_configured_size == SHA256_DIGEST_LENGTH) {
3818 1 : tls_cipher_suite = NVME_TCP_CIPHER_AES_128_GCM_SHA256;
3819 0 : } else if (psk_configured_size == SHA384_DIGEST_LENGTH) {
3820 0 : tls_cipher_suite = NVME_TCP_CIPHER_AES_256_GCM_SHA384;
3821 : } else {
3822 0 : SPDK_ERRLOG("Unrecognized cipher suite!\n");
3823 0 : rc = -EINVAL;
3824 0 : goto end;
3825 : }
3826 :
3827 1 : ttransport = SPDK_CONTAINEROF(transport, struct spdk_nvmf_tcp_transport, transport);
3828 : /* Generate PSK identity. */
3829 1 : rc = nvme_tcp_generate_psk_identity(entry->pskid, sizeof(entry->pskid), hostnqn,
3830 1 : subsystem->subnqn, tls_cipher_suite);
3831 1 : if (rc) {
3832 0 : rc = -EINVAL;
3833 0 : goto end;
3834 : }
3835 : /* Check if PSK identity entry already exists. */
3836 1 : TAILQ_FOREACH(tmp, &ttransport->psks, link) {
3837 0 : if (strncmp(tmp->pskid, entry->pskid, NVMF_PSK_IDENTITY_LEN) == 0) {
3838 0 : SPDK_ERRLOG("Given PSK identity: %s entry already exists!\n", entry->pskid);
3839 0 : rc = -EEXIST;
3840 0 : goto end;
3841 : }
3842 : }
3843 :
3844 1 : if (snprintf(entry->hostnqn, sizeof(entry->hostnqn), "%s", hostnqn) < 0) {
3845 0 : SPDK_ERRLOG("Could not write hostnqn string!\n");
3846 0 : rc = -EINVAL;
3847 0 : goto end;
3848 : }
3849 1 : if (snprintf(entry->subnqn, sizeof(entry->subnqn), "%s", subsystem->subnqn) < 0) {
3850 0 : SPDK_ERRLOG("Could not write subnqn string!\n");
3851 0 : rc = -EINVAL;
3852 0 : goto end;
3853 : }
3854 :
3855 1 : entry->tls_cipher_suite = tls_cipher_suite;
3856 :
3857 : /* No hash indicates that Configured PSK must be used as Retained PSK. */
3858 1 : if (psk_retained_hash == NVME_TCP_HASH_ALGORITHM_NONE) {
3859 : /* Psk configured is either 32 or 48 bytes long. */
3860 0 : memcpy(entry->psk, psk_configured, psk_configured_size);
3861 0 : entry->psk_size = psk_configured_size;
3862 : } else {
3863 : /* Derive retained PSK. */
3864 1 : rc = nvme_tcp_derive_retained_psk(psk_configured, psk_configured_size, hostnqn, entry->psk,
3865 : SPDK_TLS_PSK_MAX_LEN, psk_retained_hash);
3866 1 : if (rc < 0) {
3867 0 : SPDK_ERRLOG("Unable to derive retained PSK!\n");
3868 0 : goto end;
3869 : }
3870 1 : entry->psk_size = rc;
3871 : }
3872 :
3873 1 : TAILQ_INSERT_TAIL(&ttransport->psks, entry, link);
3874 1 : rc = 0;
3875 :
3876 1 : end:
3877 1 : spdk_memset_s(psk_configured, sizeof(psk_configured), 0, sizeof(psk_configured));
3878 1 : spdk_memset_s(psk_interchange, sizeof(psk_interchange), 0, sizeof(psk_interchange));
3879 :
3880 1 : free(opts.psk);
3881 1 : if (rc != 0) {
3882 0 : nvmf_tcp_free_psk_entry(entry);
3883 : }
3884 :
3885 1 : return rc;
3886 : }
3887 :
3888 : static void
3889 1 : nvmf_tcp_subsystem_remove_host(struct spdk_nvmf_transport *transport,
3890 : const struct spdk_nvmf_subsystem *subsystem,
3891 : const char *hostnqn)
3892 : {
3893 : struct spdk_nvmf_tcp_transport *ttransport;
3894 : struct tcp_psk_entry *entry, *tmp;
3895 :
3896 1 : assert(transport != NULL);
3897 1 : assert(subsystem != NULL);
3898 :
3899 1 : ttransport = SPDK_CONTAINEROF(transport, struct spdk_nvmf_tcp_transport, transport);
3900 1 : TAILQ_FOREACH_SAFE(entry, &ttransport->psks, link, tmp) {
3901 1 : if ((strncmp(entry->hostnqn, hostnqn, SPDK_NVMF_NQN_MAX_LEN)) == 0 &&
3902 1 : (strncmp(entry->subnqn, subsystem->subnqn, SPDK_NVMF_NQN_MAX_LEN)) == 0) {
3903 1 : TAILQ_REMOVE(&ttransport->psks, entry, link);
3904 1 : nvmf_tcp_free_psk_entry(entry);
3905 1 : break;
3906 : }
3907 : }
3908 1 : }
3909 :
3910 : static void
3911 0 : nvmf_tcp_subsystem_dump_host(struct spdk_nvmf_transport *transport,
3912 : const struct spdk_nvmf_subsystem *subsystem, const char *hostnqn,
3913 : struct spdk_json_write_ctx *w)
3914 : {
3915 : struct spdk_nvmf_tcp_transport *ttransport;
3916 : struct tcp_psk_entry *entry;
3917 :
3918 0 : assert(transport != NULL);
3919 0 : assert(subsystem != NULL);
3920 :
3921 0 : ttransport = SPDK_CONTAINEROF(transport, struct spdk_nvmf_tcp_transport, transport);
3922 0 : TAILQ_FOREACH(entry, &ttransport->psks, link) {
3923 0 : if ((strncmp(entry->hostnqn, hostnqn, SPDK_NVMF_NQN_MAX_LEN)) == 0 &&
3924 0 : (strncmp(entry->subnqn, subsystem->subnqn, SPDK_NVMF_NQN_MAX_LEN)) == 0) {
3925 0 : spdk_json_write_named_string(w, "psk", spdk_key_get_name(entry->key));
3926 0 : break;
3927 : }
3928 : }
3929 0 : }
3930 :
3931 : static void
3932 1 : nvmf_tcp_opts_init(struct spdk_nvmf_transport_opts *opts)
3933 : {
3934 1 : opts->max_queue_depth = SPDK_NVMF_TCP_DEFAULT_MAX_IO_QUEUE_DEPTH;
3935 1 : opts->max_qpairs_per_ctrlr = SPDK_NVMF_TCP_DEFAULT_MAX_QPAIRS_PER_CTRLR;
3936 1 : opts->in_capsule_data_size = SPDK_NVMF_TCP_DEFAULT_IN_CAPSULE_DATA_SIZE;
3937 1 : opts->max_io_size = SPDK_NVMF_TCP_DEFAULT_MAX_IO_SIZE;
3938 1 : opts->io_unit_size = SPDK_NVMF_TCP_DEFAULT_IO_UNIT_SIZE;
3939 1 : opts->max_aq_depth = SPDK_NVMF_TCP_DEFAULT_MAX_ADMIN_QUEUE_DEPTH;
3940 1 : opts->num_shared_buffers = SPDK_NVMF_TCP_DEFAULT_NUM_SHARED_BUFFERS;
3941 1 : opts->buf_cache_size = SPDK_NVMF_TCP_DEFAULT_BUFFER_CACHE_SIZE;
3942 1 : opts->dif_insert_or_strip = SPDK_NVMF_TCP_DEFAULT_DIF_INSERT_OR_STRIP;
3943 1 : opts->abort_timeout_sec = SPDK_NVMF_TCP_DEFAULT_ABORT_TIMEOUT_SEC;
3944 1 : opts->transport_specific = NULL;
3945 1 : }
3946 :
3947 : const struct spdk_nvmf_transport_ops spdk_nvmf_transport_tcp = {
3948 : .name = "TCP",
3949 : .type = SPDK_NVME_TRANSPORT_TCP,
3950 : .opts_init = nvmf_tcp_opts_init,
3951 : .create = nvmf_tcp_create,
3952 : .dump_opts = nvmf_tcp_dump_opts,
3953 : .destroy = nvmf_tcp_destroy,
3954 :
3955 : .listen = nvmf_tcp_listen,
3956 : .stop_listen = nvmf_tcp_stop_listen,
3957 :
3958 : .listener_discover = nvmf_tcp_discover,
3959 :
3960 : .poll_group_create = nvmf_tcp_poll_group_create,
3961 : .get_optimal_poll_group = nvmf_tcp_get_optimal_poll_group,
3962 : .poll_group_destroy = nvmf_tcp_poll_group_destroy,
3963 : .poll_group_add = nvmf_tcp_poll_group_add,
3964 : .poll_group_remove = nvmf_tcp_poll_group_remove,
3965 : .poll_group_poll = nvmf_tcp_poll_group_poll,
3966 :
3967 : .req_free = nvmf_tcp_req_free,
3968 : .req_complete = nvmf_tcp_req_complete,
3969 : .req_get_buffers_done = nvmf_tcp_req_get_buffers_done,
3970 :
3971 : .qpair_fini = nvmf_tcp_close_qpair,
3972 : .qpair_get_local_trid = nvmf_tcp_qpair_get_local_trid,
3973 : .qpair_get_peer_trid = nvmf_tcp_qpair_get_peer_trid,
3974 : .qpair_get_listen_trid = nvmf_tcp_qpair_get_listen_trid,
3975 : .qpair_abort_request = nvmf_tcp_qpair_abort_request,
3976 : .subsystem_add_host = nvmf_tcp_subsystem_add_host,
3977 : .subsystem_remove_host = nvmf_tcp_subsystem_remove_host,
3978 : .subsystem_dump_host = nvmf_tcp_subsystem_dump_host,
3979 : };
3980 :
3981 1 : SPDK_NVMF_TRANSPORT_REGISTER(tcp, &spdk_nvmf_transport_tcp);
3982 1 : SPDK_LOG_REGISTER_COMPONENT(nvmf_tcp)
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