Line data Source code
1 : /* SPDX-License-Identifier: BSD-3-Clause
2 : * Copyright (C) 2016 Intel Corporation. All rights reserved.
3 : * Copyright (c) 2019 Mellanox Technologies LTD. All rights reserved.
4 : * Copyright (c) 2021 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
5 : */
6 :
7 : #include "spdk/stdinc.h"
8 :
9 : #include "nvmf_internal.h"
10 : #include "transport.h"
11 :
12 : #include "spdk/assert.h"
13 : #include "spdk/likely.h"
14 : #include "spdk/string.h"
15 : #include "spdk/trace.h"
16 : #include "spdk/nvmf_spec.h"
17 : #include "spdk/uuid.h"
18 : #include "spdk/json.h"
19 : #include "spdk/file.h"
20 : #include "spdk/bit_array.h"
21 : #include "spdk/bdev.h"
22 :
23 : #define __SPDK_BDEV_MODULE_ONLY
24 : #include "spdk/bdev_module.h"
25 : #include "spdk/log.h"
26 : #include "spdk_internal/utf.h"
27 : #include "spdk_internal/usdt.h"
28 :
29 : #define MODEL_NUMBER_DEFAULT "SPDK bdev Controller"
30 : #define NVMF_SUBSYSTEM_DEFAULT_NAMESPACES 32
31 :
32 : /*
33 : * States for parsing valid domains in NQNs according to RFC 1034
34 : */
35 : enum spdk_nvmf_nqn_domain_states {
36 : /* First character of a domain must be a letter */
37 : SPDK_NVMF_DOMAIN_ACCEPT_LETTER = 0,
38 :
39 : /* Subsequent characters can be any of letter, digit, or hyphen */
40 : SPDK_NVMF_DOMAIN_ACCEPT_LDH = 1,
41 :
42 : /* A domain label must end with either a letter or digit */
43 : SPDK_NVMF_DOMAIN_ACCEPT_ANY = 2
44 : };
45 :
46 : static int _nvmf_subsystem_destroy(struct spdk_nvmf_subsystem *subsystem);
47 :
48 : /* Returns true if is a valid ASCII string as defined by the NVMe spec */
49 : static bool
50 3 : nvmf_valid_ascii_string(const void *buf, size_t size)
51 : {
52 3 : const uint8_t *str = buf;
53 : size_t i;
54 :
55 35 : for (i = 0; i < size; i++) {
56 33 : if (str[i] < 0x20 || str[i] > 0x7E) {
57 1 : return false;
58 : }
59 : }
60 :
61 2 : return true;
62 : }
63 :
64 : bool
65 46 : nvmf_nqn_is_valid(const char *nqn)
66 : {
67 : size_t len;
68 46 : struct spdk_uuid uuid_value;
69 : uint32_t i;
70 : int bytes_consumed;
71 : uint32_t domain_label_length;
72 : char *reverse_domain_end;
73 : uint32_t reverse_domain_end_index;
74 46 : enum spdk_nvmf_nqn_domain_states domain_state = SPDK_NVMF_DOMAIN_ACCEPT_LETTER;
75 :
76 : /* Check for length requirements */
77 46 : len = strlen(nqn);
78 46 : if (len > SPDK_NVMF_NQN_MAX_LEN) {
79 1 : SPDK_ERRLOG("Invalid NQN \"%s\": length %zu > max %d\n", nqn, len, SPDK_NVMF_NQN_MAX_LEN);
80 1 : return false;
81 : }
82 :
83 : /* The nqn must be at least as long as SPDK_NVMF_NQN_MIN_LEN to contain the necessary prefix. */
84 45 : if (len < SPDK_NVMF_NQN_MIN_LEN) {
85 2 : SPDK_ERRLOG("Invalid NQN \"%s\": length %zu < min %d\n", nqn, len, SPDK_NVMF_NQN_MIN_LEN);
86 2 : return false;
87 : }
88 :
89 : /* Check for discovery controller nqn */
90 43 : if (!strcmp(nqn, SPDK_NVMF_DISCOVERY_NQN)) {
91 2 : return true;
92 : }
93 :
94 : /* Check for equality with the generic nqn structure of the form "nqn.2014-08.org.nvmexpress:uuid:11111111-2222-3333-4444-555555555555" */
95 41 : if (!strncmp(nqn, SPDK_NVMF_NQN_UUID_PRE, SPDK_NVMF_NQN_UUID_PRE_LEN)) {
96 6 : if (len != SPDK_NVMF_NQN_UUID_PRE_LEN + SPDK_NVMF_UUID_STRING_LEN) {
97 2 : SPDK_ERRLOG("Invalid NQN \"%s\": uuid is not the correct length\n", nqn);
98 2 : return false;
99 : }
100 :
101 4 : if (spdk_uuid_parse(&uuid_value, &nqn[SPDK_NVMF_NQN_UUID_PRE_LEN])) {
102 2 : SPDK_ERRLOG("Invalid NQN \"%s\": uuid is not formatted correctly\n", nqn);
103 2 : return false;
104 : }
105 2 : return true;
106 : }
107 :
108 : /* If the nqn does not match the uuid structure, the next several checks validate the form "nqn.yyyy-mm.reverse.domain:user-string" */
109 :
110 35 : if (strncmp(nqn, "nqn.", 4) != 0) {
111 0 : SPDK_ERRLOG("Invalid NQN \"%s\": NQN must begin with \"nqn.\".\n", nqn);
112 0 : return false;
113 : }
114 :
115 : /* Check for yyyy-mm. */
116 35 : if (!(isdigit(nqn[4]) && isdigit(nqn[5]) && isdigit(nqn[6]) && isdigit(nqn[7]) &&
117 35 : nqn[8] == '-' && isdigit(nqn[9]) && isdigit(nqn[10]) && nqn[11] == '.')) {
118 0 : SPDK_ERRLOG("Invalid date code in NQN \"%s\"\n", nqn);
119 0 : return false;
120 : }
121 :
122 35 : reverse_domain_end = strchr(nqn, ':');
123 35 : if (reverse_domain_end != NULL && (reverse_domain_end_index = reverse_domain_end - nqn) < len - 1) {
124 : } else {
125 1 : SPDK_ERRLOG("Invalid NQN \"%s\". NQN must contain user specified name with a ':' as a prefix.\n",
126 : nqn);
127 1 : return false;
128 : }
129 :
130 : /* Check for valid reverse domain */
131 34 : domain_label_length = 0;
132 338 : for (i = 12; i < reverse_domain_end_index; i++) {
133 310 : if (domain_label_length > SPDK_DOMAIN_LABEL_MAX_LEN) {
134 1 : SPDK_ERRLOG("Invalid domain name in NQN \"%s\". At least one Label is too long.\n", nqn);
135 1 : return false;
136 : }
137 :
138 309 : switch (domain_state) {
139 :
140 69 : case SPDK_NVMF_DOMAIN_ACCEPT_LETTER: {
141 69 : if (isalpha(nqn[i])) {
142 65 : domain_state = SPDK_NVMF_DOMAIN_ACCEPT_ANY;
143 65 : domain_label_length++;
144 65 : break;
145 : } else {
146 4 : SPDK_ERRLOG("Invalid domain name in NQN \"%s\". Label names must start with a letter.\n", nqn);
147 4 : return false;
148 : }
149 : }
150 :
151 4 : case SPDK_NVMF_DOMAIN_ACCEPT_LDH: {
152 4 : if (isalpha(nqn[i]) || isdigit(nqn[i])) {
153 3 : domain_state = SPDK_NVMF_DOMAIN_ACCEPT_ANY;
154 3 : domain_label_length++;
155 3 : break;
156 1 : } else if (nqn[i] == '-') {
157 1 : if (i == reverse_domain_end_index - 1) {
158 0 : SPDK_ERRLOG("Invalid domain name in NQN \"%s\". Label names must end with an alphanumeric symbol.\n",
159 : nqn);
160 0 : return false;
161 : }
162 1 : domain_state = SPDK_NVMF_DOMAIN_ACCEPT_LDH;
163 1 : domain_label_length++;
164 1 : break;
165 0 : } else if (nqn[i] == '.') {
166 0 : SPDK_ERRLOG("Invalid domain name in NQN \"%s\". Label names must end with an alphanumeric symbol.\n",
167 : nqn);
168 0 : return false;
169 : } else {
170 0 : SPDK_ERRLOG("Invalid domain name in NQN \"%s\". Label names must contain only [a-z,A-Z,0-9,'-','.'].\n",
171 : nqn);
172 0 : return false;
173 : }
174 : }
175 :
176 236 : case SPDK_NVMF_DOMAIN_ACCEPT_ANY: {
177 236 : if (isalpha(nqn[i]) || isdigit(nqn[i])) {
178 197 : domain_state = SPDK_NVMF_DOMAIN_ACCEPT_ANY;
179 197 : domain_label_length++;
180 197 : break;
181 39 : } else if (nqn[i] == '-') {
182 4 : if (i == reverse_domain_end_index - 1) {
183 1 : SPDK_ERRLOG("Invalid domain name in NQN \"%s\". Label names must end with an alphanumeric symbol.\n",
184 : nqn);
185 1 : return false;
186 : }
187 3 : domain_state = SPDK_NVMF_DOMAIN_ACCEPT_LDH;
188 3 : domain_label_length++;
189 3 : break;
190 35 : } else if (nqn[i] == '.') {
191 35 : domain_state = SPDK_NVMF_DOMAIN_ACCEPT_LETTER;
192 35 : domain_label_length = 0;
193 35 : break;
194 : } else {
195 0 : SPDK_ERRLOG("Invalid domain name in NQN \"%s\". Label names must contain only [a-z,A-Z,0-9,'-','.'].\n",
196 : nqn);
197 0 : return false;
198 : }
199 : }
200 : }
201 : }
202 :
203 28 : i = reverse_domain_end_index + 1;
204 414 : while (i < len) {
205 387 : bytes_consumed = utf8_valid(&nqn[i], &nqn[len]);
206 387 : if (bytes_consumed <= 0) {
207 1 : SPDK_ERRLOG("Invalid domain name in NQN \"%s\". Label names must contain only valid utf-8.\n", nqn);
208 1 : return false;
209 : }
210 :
211 386 : i += bytes_consumed;
212 : }
213 27 : return true;
214 : }
215 :
216 : static void subsystem_state_change_on_pg(struct spdk_io_channel_iter *i);
217 :
218 : struct spdk_nvmf_subsystem *
219 24 : spdk_nvmf_subsystem_create(struct spdk_nvmf_tgt *tgt,
220 : const char *nqn,
221 : enum spdk_nvmf_subtype type,
222 : uint32_t num_ns)
223 : {
224 : struct spdk_nvmf_subsystem *subsystem;
225 : uint32_t sid;
226 :
227 24 : if (spdk_nvmf_tgt_find_subsystem(tgt, nqn)) {
228 0 : SPDK_ERRLOG("Subsystem NQN '%s' already exists\n", nqn);
229 0 : return NULL;
230 : }
231 :
232 24 : if (!nvmf_nqn_is_valid(nqn)) {
233 11 : SPDK_ERRLOG("Subsystem NQN '%s' is invalid\n", nqn);
234 11 : return NULL;
235 : }
236 :
237 13 : if (type == SPDK_NVMF_SUBTYPE_DISCOVERY_CURRENT ||
238 : type == SPDK_NVMF_SUBTYPE_DISCOVERY) {
239 1 : if (num_ns != 0) {
240 0 : SPDK_ERRLOG("Discovery subsystem cannot have namespaces.\n");
241 0 : return NULL;
242 : }
243 12 : } else if (num_ns == 0) {
244 12 : num_ns = NVMF_SUBSYSTEM_DEFAULT_NAMESPACES;
245 : }
246 :
247 : /* Find a free subsystem id (sid) */
248 13 : sid = spdk_bit_array_find_first_clear(tgt->subsystem_ids, 0);
249 13 : if (sid == UINT32_MAX) {
250 0 : SPDK_ERRLOG("No free subsystem IDs are available for subsystem creation\n");
251 0 : return NULL;
252 : }
253 13 : subsystem = calloc(1, sizeof(struct spdk_nvmf_subsystem));
254 13 : if (subsystem == NULL) {
255 0 : SPDK_ERRLOG("Subsystem memory allocation failed\n");
256 0 : return NULL;
257 : }
258 :
259 13 : subsystem->thread = spdk_get_thread();
260 13 : subsystem->state = SPDK_NVMF_SUBSYSTEM_INACTIVE;
261 13 : subsystem->tgt = tgt;
262 13 : subsystem->id = sid;
263 13 : subsystem->subtype = type;
264 13 : subsystem->max_nsid = num_ns;
265 13 : subsystem->next_cntlid = 1;
266 13 : subsystem->min_cntlid = NVMF_MIN_CNTLID;
267 13 : subsystem->max_cntlid = NVMF_MAX_CNTLID;
268 13 : snprintf(subsystem->subnqn, sizeof(subsystem->subnqn), "%s", nqn);
269 13 : pthread_mutex_init(&subsystem->mutex, NULL);
270 13 : TAILQ_INIT(&subsystem->listeners);
271 13 : TAILQ_INIT(&subsystem->hosts);
272 13 : TAILQ_INIT(&subsystem->ctrlrs);
273 13 : TAILQ_INIT(&subsystem->state_changes);
274 13 : subsystem->used_listener_ids = spdk_bit_array_create(NVMF_MAX_LISTENERS_PER_SUBSYSTEM);
275 13 : if (subsystem->used_listener_ids == NULL) {
276 0 : pthread_mutex_destroy(&subsystem->mutex);
277 0 : free(subsystem);
278 0 : SPDK_ERRLOG("Listener id array memory allocation failed\n");
279 0 : return NULL;
280 : }
281 :
282 13 : if (num_ns != 0) {
283 12 : subsystem->ns = calloc(num_ns, sizeof(struct spdk_nvmf_ns *));
284 12 : if (subsystem->ns == NULL) {
285 0 : SPDK_ERRLOG("Namespace memory allocation failed\n");
286 0 : pthread_mutex_destroy(&subsystem->mutex);
287 0 : spdk_bit_array_free(&subsystem->used_listener_ids);
288 0 : free(subsystem);
289 0 : return NULL;
290 : }
291 12 : subsystem->ana_group = calloc(num_ns, sizeof(uint32_t));
292 12 : if (subsystem->ana_group == NULL) {
293 0 : SPDK_ERRLOG("ANA group memory allocation failed\n");
294 0 : pthread_mutex_destroy(&subsystem->mutex);
295 0 : free(subsystem->ns);
296 0 : spdk_bit_array_free(&subsystem->used_listener_ids);
297 0 : free(subsystem);
298 0 : return NULL;
299 : }
300 : }
301 :
302 13 : memset(subsystem->sn, '0', sizeof(subsystem->sn) - 1);
303 13 : subsystem->sn[sizeof(subsystem->sn) - 1] = '\0';
304 :
305 13 : snprintf(subsystem->mn, sizeof(subsystem->mn), "%s",
306 : MODEL_NUMBER_DEFAULT);
307 :
308 13 : spdk_bit_array_set(tgt->subsystem_ids, sid);
309 13 : RB_INSERT(subsystem_tree, &tgt->subsystems, subsystem);
310 :
311 : SPDK_DTRACE_PROBE1(nvmf_subsystem_create, subsystem->subnqn);
312 :
313 13 : return subsystem;
314 : }
315 :
316 : static void
317 3 : nvmf_host_free(struct spdk_nvmf_host *host)
318 : {
319 3 : spdk_keyring_put_key(host->dhchap_key);
320 3 : spdk_keyring_put_key(host->dhchap_ctrlr_key);
321 3 : free(host);
322 3 : }
323 :
324 : /* Must hold subsystem->mutex while calling this function */
325 : static void
326 3 : nvmf_subsystem_remove_host(struct spdk_nvmf_subsystem *subsystem, struct spdk_nvmf_host *host)
327 : {
328 3 : TAILQ_REMOVE(&subsystem->hosts, host, link);
329 3 : nvmf_host_free(host);
330 3 : }
331 :
332 : static void
333 7 : _nvmf_subsystem_remove_listener(struct spdk_nvmf_subsystem *subsystem,
334 : struct spdk_nvmf_subsystem_listener *listener,
335 : bool stop)
336 : {
337 : struct spdk_nvmf_transport *transport;
338 : struct spdk_nvmf_ctrlr *ctrlr;
339 :
340 7 : if (stop) {
341 0 : transport = spdk_nvmf_tgt_get_transport(subsystem->tgt, listener->trid->trstring);
342 0 : if (transport != NULL) {
343 0 : spdk_nvmf_transport_stop_listen(transport, listener->trid);
344 : }
345 : }
346 :
347 7 : TAILQ_FOREACH(ctrlr, &subsystem->ctrlrs, link) {
348 0 : if (ctrlr->listener == listener) {
349 0 : ctrlr->listener = NULL;
350 : }
351 : }
352 :
353 7 : TAILQ_REMOVE(&subsystem->listeners, listener, link);
354 7 : if (spdk_nvmf_subsystem_is_discovery(listener->subsystem)) {
355 0 : nvmf_tgt_update_mdns_prr(listener->subsystem->tgt);
356 : }
357 7 : spdk_nvmf_send_discovery_log_notice(listener->subsystem->tgt, NULL);
358 7 : free(listener->ana_state);
359 7 : spdk_bit_array_clear(subsystem->used_listener_ids, listener->id);
360 7 : free(listener->opts.sock_impl);
361 7 : free(listener);
362 7 : }
363 :
364 : static void
365 0 : _nvmf_subsystem_destroy_msg(void *cb_arg)
366 : {
367 0 : struct spdk_nvmf_subsystem *subsystem = cb_arg;
368 :
369 0 : _nvmf_subsystem_destroy(subsystem);
370 0 : }
371 :
372 : static int
373 13 : _nvmf_subsystem_destroy(struct spdk_nvmf_subsystem *subsystem)
374 : {
375 : struct nvmf_subsystem_state_change_ctx *ctx;
376 : struct spdk_nvmf_ns *ns;
377 13 : nvmf_subsystem_destroy_cb async_destroy_cb = NULL;
378 13 : void *async_destroy_cb_arg = NULL;
379 : int rc;
380 :
381 13 : if (!TAILQ_EMPTY(&subsystem->ctrlrs)) {
382 0 : SPDK_DEBUGLOG(nvmf, "subsystem %p %s has active controllers\n", subsystem, subsystem->subnqn);
383 0 : subsystem->async_destroy = true;
384 0 : rc = spdk_thread_send_msg(subsystem->thread, _nvmf_subsystem_destroy_msg, subsystem);
385 0 : if (rc) {
386 0 : SPDK_ERRLOG("Failed to send thread msg, rc %d\n", rc);
387 0 : assert(0);
388 : return rc;
389 : }
390 0 : return -EINPROGRESS;
391 : }
392 :
393 13 : ns = spdk_nvmf_subsystem_get_first_ns(subsystem);
394 13 : while (ns != NULL) {
395 0 : struct spdk_nvmf_ns *next_ns = spdk_nvmf_subsystem_get_next_ns(subsystem, ns);
396 :
397 0 : spdk_nvmf_subsystem_remove_ns(subsystem, ns->opts.nsid);
398 0 : ns = next_ns;
399 : }
400 :
401 13 : while ((ctx = TAILQ_FIRST(&subsystem->state_changes))) {
402 0 : SPDK_WARNLOG("subsystem %s has pending state change requests\n", subsystem->subnqn);
403 0 : TAILQ_REMOVE(&subsystem->state_changes, ctx, link);
404 0 : if (ctx->cb_fn != NULL) {
405 0 : ctx->cb_fn(subsystem, ctx->cb_arg, -ECANCELED);
406 : }
407 0 : free(ctx);
408 : }
409 :
410 13 : free(subsystem->ns);
411 13 : free(subsystem->ana_group);
412 :
413 13 : RB_REMOVE(subsystem_tree, &subsystem->tgt->subsystems, subsystem);
414 13 : assert(spdk_bit_array_get(subsystem->tgt->subsystem_ids, subsystem->id) == true);
415 13 : spdk_bit_array_clear(subsystem->tgt->subsystem_ids, subsystem->id);
416 :
417 13 : pthread_mutex_destroy(&subsystem->mutex);
418 :
419 13 : spdk_bit_array_free(&subsystem->used_listener_ids);
420 :
421 13 : if (subsystem->async_destroy) {
422 0 : async_destroy_cb = subsystem->async_destroy_cb;
423 0 : async_destroy_cb_arg = subsystem->async_destroy_cb_arg;
424 : }
425 :
426 13 : free(subsystem);
427 :
428 13 : if (async_destroy_cb) {
429 0 : async_destroy_cb(async_destroy_cb_arg);
430 : }
431 :
432 13 : return 0;
433 : }
434 :
435 : static struct spdk_nvmf_ns *
436 0 : _nvmf_subsystem_get_first_zoned_ns(struct spdk_nvmf_subsystem *subsystem)
437 : {
438 0 : struct spdk_nvmf_ns *ns = spdk_nvmf_subsystem_get_first_ns(subsystem);
439 0 : while (ns != NULL) {
440 0 : if (ns->csi == SPDK_NVME_CSI_ZNS) {
441 0 : return ns;
442 : }
443 0 : ns = spdk_nvmf_subsystem_get_next_ns(subsystem, ns);
444 : }
445 0 : return NULL;
446 : }
447 :
448 : int
449 13 : spdk_nvmf_subsystem_destroy(struct spdk_nvmf_subsystem *subsystem, nvmf_subsystem_destroy_cb cpl_cb,
450 : void *cpl_cb_arg)
451 : {
452 : struct spdk_nvmf_host *host, *host_tmp;
453 : struct spdk_nvmf_transport *transport;
454 :
455 13 : if (!subsystem) {
456 0 : return -EINVAL;
457 : }
458 :
459 : SPDK_DTRACE_PROBE1(nvmf_subsystem_destroy, subsystem->subnqn);
460 :
461 13 : assert(spdk_get_thread() == subsystem->thread);
462 :
463 13 : if (subsystem->state != SPDK_NVMF_SUBSYSTEM_INACTIVE) {
464 0 : SPDK_ERRLOG("Subsystem can only be destroyed in inactive state, %s state %d\n",
465 : subsystem->subnqn, subsystem->state);
466 0 : return -EAGAIN;
467 : }
468 13 : if (subsystem->destroying) {
469 0 : SPDK_ERRLOG("Subsystem destruction is already started\n");
470 0 : assert(0);
471 : return -EALREADY;
472 : }
473 :
474 13 : subsystem->destroying = true;
475 :
476 13 : SPDK_DEBUGLOG(nvmf, "subsystem is %p %s\n", subsystem, subsystem->subnqn);
477 :
478 13 : nvmf_subsystem_remove_all_listeners(subsystem, false);
479 :
480 13 : pthread_mutex_lock(&subsystem->mutex);
481 :
482 13 : TAILQ_FOREACH_SAFE(host, &subsystem->hosts, link, host_tmp) {
483 0 : for (transport = spdk_nvmf_transport_get_first(subsystem->tgt); transport;
484 0 : transport = spdk_nvmf_transport_get_next(transport)) {
485 0 : if (transport->ops->subsystem_remove_host) {
486 0 : transport->ops->subsystem_remove_host(transport, subsystem, host->nqn);
487 : }
488 : }
489 0 : nvmf_subsystem_remove_host(subsystem, host);
490 : }
491 :
492 13 : pthread_mutex_unlock(&subsystem->mutex);
493 :
494 13 : subsystem->async_destroy_cb = cpl_cb;
495 13 : subsystem->async_destroy_cb_arg = cpl_cb_arg;
496 :
497 13 : return _nvmf_subsystem_destroy(subsystem);
498 : }
499 :
500 : /* we have to use the typedef in the function declaration to appease astyle. */
501 : typedef enum spdk_nvmf_subsystem_state spdk_nvmf_subsystem_state_t;
502 :
503 : static spdk_nvmf_subsystem_state_t
504 9 : nvmf_subsystem_get_intermediate_state(enum spdk_nvmf_subsystem_state current_state,
505 : enum spdk_nvmf_subsystem_state requested_state)
506 : {
507 9 : switch (requested_state) {
508 2 : case SPDK_NVMF_SUBSYSTEM_INACTIVE:
509 2 : return SPDK_NVMF_SUBSYSTEM_DEACTIVATING;
510 4 : case SPDK_NVMF_SUBSYSTEM_ACTIVE:
511 4 : if (current_state == SPDK_NVMF_SUBSYSTEM_PAUSED) {
512 2 : return SPDK_NVMF_SUBSYSTEM_RESUMING;
513 : } else {
514 2 : return SPDK_NVMF_SUBSYSTEM_ACTIVATING;
515 : }
516 3 : case SPDK_NVMF_SUBSYSTEM_PAUSED:
517 3 : return SPDK_NVMF_SUBSYSTEM_PAUSING;
518 0 : default:
519 0 : assert(false);
520 : return SPDK_NVMF_SUBSYSTEM_NUM_STATES;
521 : }
522 : }
523 :
524 : static int
525 18 : nvmf_subsystem_set_state(struct spdk_nvmf_subsystem *subsystem,
526 : enum spdk_nvmf_subsystem_state state)
527 : {
528 18 : enum spdk_nvmf_subsystem_state actual_old_state, expected_old_state;
529 : bool exchanged;
530 :
531 18 : switch (state) {
532 2 : case SPDK_NVMF_SUBSYSTEM_INACTIVE:
533 2 : expected_old_state = SPDK_NVMF_SUBSYSTEM_DEACTIVATING;
534 2 : break;
535 2 : case SPDK_NVMF_SUBSYSTEM_ACTIVATING:
536 2 : expected_old_state = SPDK_NVMF_SUBSYSTEM_INACTIVE;
537 2 : break;
538 4 : case SPDK_NVMF_SUBSYSTEM_ACTIVE:
539 4 : expected_old_state = SPDK_NVMF_SUBSYSTEM_ACTIVATING;
540 4 : break;
541 3 : case SPDK_NVMF_SUBSYSTEM_PAUSING:
542 3 : expected_old_state = SPDK_NVMF_SUBSYSTEM_ACTIVE;
543 3 : break;
544 3 : case SPDK_NVMF_SUBSYSTEM_PAUSED:
545 3 : expected_old_state = SPDK_NVMF_SUBSYSTEM_PAUSING;
546 3 : break;
547 2 : case SPDK_NVMF_SUBSYSTEM_RESUMING:
548 2 : expected_old_state = SPDK_NVMF_SUBSYSTEM_PAUSED;
549 2 : break;
550 2 : case SPDK_NVMF_SUBSYSTEM_DEACTIVATING:
551 2 : expected_old_state = SPDK_NVMF_SUBSYSTEM_ACTIVE;
552 2 : break;
553 0 : default:
554 0 : assert(false);
555 : return -1;
556 : }
557 :
558 18 : actual_old_state = expected_old_state;
559 18 : exchanged = __atomic_compare_exchange_n(&subsystem->state, &actual_old_state, state, false,
560 : __ATOMIC_RELAXED, __ATOMIC_RELAXED);
561 18 : if (spdk_unlikely(exchanged == false)) {
562 3 : if (actual_old_state == SPDK_NVMF_SUBSYSTEM_RESUMING &&
563 : state == SPDK_NVMF_SUBSYSTEM_ACTIVE) {
564 2 : expected_old_state = SPDK_NVMF_SUBSYSTEM_RESUMING;
565 : }
566 : /* This is for the case when activating the subsystem fails. */
567 3 : if (actual_old_state == SPDK_NVMF_SUBSYSTEM_ACTIVATING &&
568 : state == SPDK_NVMF_SUBSYSTEM_DEACTIVATING) {
569 0 : expected_old_state = SPDK_NVMF_SUBSYSTEM_ACTIVATING;
570 : }
571 : /* This is for the case when resuming the subsystem fails. */
572 3 : if (actual_old_state == SPDK_NVMF_SUBSYSTEM_RESUMING &&
573 : state == SPDK_NVMF_SUBSYSTEM_PAUSING) {
574 0 : expected_old_state = SPDK_NVMF_SUBSYSTEM_RESUMING;
575 : }
576 : /* This is for the case when stopping paused subsystem */
577 3 : if (actual_old_state == SPDK_NVMF_SUBSYSTEM_PAUSED &&
578 : state == SPDK_NVMF_SUBSYSTEM_DEACTIVATING) {
579 1 : expected_old_state = SPDK_NVMF_SUBSYSTEM_PAUSED;
580 : }
581 3 : actual_old_state = expected_old_state;
582 3 : __atomic_compare_exchange_n(&subsystem->state, &actual_old_state, state, false,
583 : __ATOMIC_RELAXED, __ATOMIC_RELAXED);
584 : }
585 18 : assert(actual_old_state == expected_old_state);
586 18 : return actual_old_state - expected_old_state;
587 : }
588 :
589 : static void nvmf_subsystem_do_state_change(struct nvmf_subsystem_state_change_ctx *ctx);
590 :
591 : static void
592 10 : _nvmf_subsystem_state_change_complete(void *_ctx)
593 : {
594 10 : struct nvmf_subsystem_state_change_ctx *next, *ctx = _ctx;
595 10 : struct spdk_nvmf_subsystem *subsystem = ctx->subsystem;
596 :
597 10 : pthread_mutex_lock(&subsystem->mutex);
598 10 : assert(TAILQ_FIRST(&subsystem->state_changes) == ctx);
599 10 : TAILQ_REMOVE(&subsystem->state_changes, ctx, link);
600 10 : next = TAILQ_FIRST(&subsystem->state_changes);
601 10 : pthread_mutex_unlock(&subsystem->mutex);
602 :
603 10 : if (ctx->cb_fn != NULL) {
604 3 : ctx->cb_fn(subsystem, ctx->cb_arg, ctx->status);
605 : }
606 10 : free(ctx);
607 :
608 10 : if (next != NULL) {
609 1 : nvmf_subsystem_do_state_change(next);
610 : }
611 10 : }
612 :
613 : static void
614 10 : nvmf_subsystem_state_change_complete(struct nvmf_subsystem_state_change_ctx *ctx, int status)
615 : {
616 10 : ctx->status = status;
617 10 : spdk_thread_exec_msg(ctx->thread, _nvmf_subsystem_state_change_complete, ctx);
618 10 : }
619 :
620 : static void
621 0 : subsystem_state_change_revert_done(struct spdk_io_channel_iter *i, int status)
622 : {
623 0 : struct nvmf_subsystem_state_change_ctx *ctx = spdk_io_channel_iter_get_ctx(i);
624 :
625 : /* Nothing to be done here if the state setting fails, we are just screwed. */
626 0 : if (nvmf_subsystem_set_state(ctx->subsystem, ctx->requested_state)) {
627 0 : SPDK_ERRLOG("Unable to revert the subsystem state after operation failure.\n");
628 : }
629 :
630 : /* return a failure here. This function only exists in an error path. */
631 0 : nvmf_subsystem_state_change_complete(ctx, -1);
632 0 : }
633 :
634 : static void
635 9 : subsystem_state_change_done(struct spdk_io_channel_iter *i, int status)
636 : {
637 9 : struct nvmf_subsystem_state_change_ctx *ctx = spdk_io_channel_iter_get_ctx(i);
638 : enum spdk_nvmf_subsystem_state intermediate_state;
639 :
640 : SPDK_DTRACE_PROBE4(nvmf_subsystem_change_state_done, ctx->subsystem->subnqn,
641 : ctx->requested_state, ctx->original_state, status);
642 :
643 9 : if (status == 0) {
644 9 : status = nvmf_subsystem_set_state(ctx->subsystem, ctx->requested_state);
645 9 : if (status) {
646 0 : status = -1;
647 : }
648 : }
649 :
650 9 : if (status) {
651 0 : intermediate_state = nvmf_subsystem_get_intermediate_state(ctx->requested_state,
652 : ctx->original_state);
653 0 : assert(intermediate_state != SPDK_NVMF_SUBSYSTEM_NUM_STATES);
654 :
655 0 : if (nvmf_subsystem_set_state(ctx->subsystem, intermediate_state)) {
656 0 : goto out;
657 : }
658 0 : ctx->requested_state = ctx->original_state;
659 0 : spdk_for_each_channel(ctx->subsystem->tgt,
660 : subsystem_state_change_on_pg,
661 : ctx,
662 : subsystem_state_change_revert_done);
663 0 : return;
664 : }
665 :
666 9 : out:
667 9 : nvmf_subsystem_state_change_complete(ctx, status);
668 : }
669 :
670 : static void
671 0 : subsystem_state_change_continue(void *ctx, int status)
672 : {
673 0 : struct spdk_io_channel_iter *i = ctx;
674 : struct nvmf_subsystem_state_change_ctx *_ctx __attribute__((unused));
675 :
676 0 : _ctx = spdk_io_channel_iter_get_ctx(i);
677 : SPDK_DTRACE_PROBE3(nvmf_pg_change_state_done, _ctx->subsystem->subnqn,
678 : _ctx->requested_state, spdk_thread_get_id(spdk_get_thread()));
679 :
680 0 : spdk_for_each_channel_continue(i, status);
681 0 : }
682 :
683 : static void
684 0 : subsystem_state_change_on_pg(struct spdk_io_channel_iter *i)
685 : {
686 : struct nvmf_subsystem_state_change_ctx *ctx;
687 : struct spdk_io_channel *ch;
688 : struct spdk_nvmf_poll_group *group;
689 :
690 0 : ctx = spdk_io_channel_iter_get_ctx(i);
691 0 : ch = spdk_io_channel_iter_get_channel(i);
692 0 : group = spdk_io_channel_get_ctx(ch);
693 :
694 : SPDK_DTRACE_PROBE3(nvmf_pg_change_state, ctx->subsystem->subnqn,
695 : ctx->requested_state, spdk_thread_get_id(spdk_get_thread()));
696 0 : switch (ctx->requested_state) {
697 0 : case SPDK_NVMF_SUBSYSTEM_INACTIVE:
698 0 : nvmf_poll_group_remove_subsystem(group, ctx->subsystem, subsystem_state_change_continue, i);
699 0 : break;
700 0 : case SPDK_NVMF_SUBSYSTEM_ACTIVE:
701 0 : if (ctx->subsystem->state == SPDK_NVMF_SUBSYSTEM_ACTIVATING) {
702 0 : nvmf_poll_group_add_subsystem(group, ctx->subsystem, subsystem_state_change_continue, i);
703 0 : } else if (ctx->subsystem->state == SPDK_NVMF_SUBSYSTEM_RESUMING) {
704 0 : nvmf_poll_group_resume_subsystem(group, ctx->subsystem, subsystem_state_change_continue, i);
705 : }
706 0 : break;
707 0 : case SPDK_NVMF_SUBSYSTEM_PAUSED:
708 0 : nvmf_poll_group_pause_subsystem(group, ctx->subsystem, ctx->nsid, subsystem_state_change_continue,
709 : i);
710 0 : break;
711 0 : default:
712 0 : assert(false);
713 : break;
714 : }
715 0 : }
716 :
717 : static void
718 10 : nvmf_subsystem_do_state_change(struct nvmf_subsystem_state_change_ctx *ctx)
719 : {
720 10 : struct spdk_nvmf_subsystem *subsystem = ctx->subsystem;
721 : enum spdk_nvmf_subsystem_state intermediate_state;
722 : int rc;
723 :
724 : SPDK_DTRACE_PROBE3(nvmf_subsystem_change_state, subsystem->subnqn,
725 : ctx->requested_state, subsystem->state);
726 :
727 : /* If we are already in the requested state, just call the callback immediately. */
728 10 : if (subsystem->state == ctx->requested_state) {
729 1 : nvmf_subsystem_state_change_complete(ctx, 0);
730 1 : return;
731 : }
732 :
733 9 : intermediate_state = nvmf_subsystem_get_intermediate_state(subsystem->state,
734 : ctx->requested_state);
735 9 : assert(intermediate_state != SPDK_NVMF_SUBSYSTEM_NUM_STATES);
736 :
737 9 : ctx->original_state = subsystem->state;
738 9 : rc = nvmf_subsystem_set_state(subsystem, intermediate_state);
739 9 : if (rc) {
740 0 : nvmf_subsystem_state_change_complete(ctx, -1);
741 0 : return;
742 : }
743 :
744 9 : spdk_for_each_channel(subsystem->tgt,
745 : subsystem_state_change_on_pg,
746 : ctx,
747 : subsystem_state_change_done);
748 : }
749 :
750 :
751 : static int
752 10 : nvmf_subsystem_state_change(struct spdk_nvmf_subsystem *subsystem,
753 : uint32_t nsid,
754 : enum spdk_nvmf_subsystem_state requested_state,
755 : spdk_nvmf_subsystem_state_change_done cb_fn,
756 : void *cb_arg)
757 : {
758 : struct nvmf_subsystem_state_change_ctx *ctx;
759 : struct spdk_thread *thread;
760 :
761 10 : thread = spdk_get_thread();
762 10 : if (thread == NULL) {
763 0 : return -EINVAL;
764 : }
765 :
766 10 : ctx = calloc(1, sizeof(*ctx));
767 10 : if (!ctx) {
768 0 : return -ENOMEM;
769 : }
770 :
771 10 : ctx->subsystem = subsystem;
772 10 : ctx->nsid = nsid;
773 10 : ctx->requested_state = requested_state;
774 10 : ctx->cb_fn = cb_fn;
775 10 : ctx->cb_arg = cb_arg;
776 10 : ctx->thread = thread;
777 :
778 10 : pthread_mutex_lock(&subsystem->mutex);
779 10 : TAILQ_INSERT_TAIL(&subsystem->state_changes, ctx, link);
780 10 : if (ctx != TAILQ_FIRST(&subsystem->state_changes)) {
781 1 : pthread_mutex_unlock(&subsystem->mutex);
782 1 : return 0;
783 : }
784 9 : pthread_mutex_unlock(&subsystem->mutex);
785 :
786 9 : nvmf_subsystem_do_state_change(ctx);
787 :
788 9 : return 0;
789 : }
790 :
791 : int
792 2 : spdk_nvmf_subsystem_start(struct spdk_nvmf_subsystem *subsystem,
793 : spdk_nvmf_subsystem_state_change_done cb_fn,
794 : void *cb_arg)
795 : {
796 2 : return nvmf_subsystem_state_change(subsystem, 0, SPDK_NVMF_SUBSYSTEM_ACTIVE, cb_fn, cb_arg);
797 : }
798 :
799 : int
800 3 : spdk_nvmf_subsystem_stop(struct spdk_nvmf_subsystem *subsystem,
801 : spdk_nvmf_subsystem_state_change_done cb_fn,
802 : void *cb_arg)
803 : {
804 3 : return nvmf_subsystem_state_change(subsystem, 0, SPDK_NVMF_SUBSYSTEM_INACTIVE, cb_fn, cb_arg);
805 : }
806 :
807 : int
808 3 : spdk_nvmf_subsystem_pause(struct spdk_nvmf_subsystem *subsystem,
809 : uint32_t nsid,
810 : spdk_nvmf_subsystem_state_change_done cb_fn,
811 : void *cb_arg)
812 : {
813 3 : return nvmf_subsystem_state_change(subsystem, nsid, SPDK_NVMF_SUBSYSTEM_PAUSED, cb_fn, cb_arg);
814 : }
815 :
816 : int
817 2 : spdk_nvmf_subsystem_resume(struct spdk_nvmf_subsystem *subsystem,
818 : spdk_nvmf_subsystem_state_change_done cb_fn,
819 : void *cb_arg)
820 : {
821 2 : return nvmf_subsystem_state_change(subsystem, 0, SPDK_NVMF_SUBSYSTEM_ACTIVE, cb_fn, cb_arg);
822 : }
823 :
824 : struct spdk_nvmf_subsystem *
825 33 : spdk_nvmf_subsystem_get_first(struct spdk_nvmf_tgt *tgt)
826 : {
827 33 : return RB_MIN(subsystem_tree, &tgt->subsystems);
828 : }
829 :
830 : struct spdk_nvmf_subsystem *
831 32 : spdk_nvmf_subsystem_get_next(struct spdk_nvmf_subsystem *subsystem)
832 : {
833 32 : if (!subsystem) {
834 0 : return NULL;
835 : }
836 :
837 32 : return RB_NEXT(subsystem_tree, &tgt->subsystems, subsystem);
838 : }
839 :
840 : static int
841 2 : nvmf_ns_add_host(struct spdk_nvmf_ns *ns, const char *hostnqn)
842 : {
843 : struct spdk_nvmf_host *host;
844 :
845 2 : host = calloc(1, sizeof(*host));
846 2 : if (!host) {
847 0 : return -ENOMEM;
848 : }
849 2 : snprintf(host->nqn, sizeof(host->nqn), "%s", hostnqn);
850 2 : TAILQ_INSERT_HEAD(&ns->hosts, host, link);
851 2 : return 0;
852 : }
853 :
854 : static void
855 2 : nvmf_ns_remove_host(struct spdk_nvmf_ns *ns, struct spdk_nvmf_host *host)
856 : {
857 2 : TAILQ_REMOVE(&ns->hosts, host, link);
858 2 : free(host);
859 2 : }
860 :
861 : static void
862 3 : _async_event_ns_notice(void *_ctrlr)
863 : {
864 3 : struct spdk_nvmf_ctrlr *ctrlr = _ctrlr;
865 :
866 3 : nvmf_ctrlr_async_event_ns_notice(ctrlr);
867 3 : }
868 :
869 : static void
870 3 : send_async_event_ns_notice(struct spdk_nvmf_ctrlr *ctrlr)
871 : {
872 3 : spdk_thread_send_msg(ctrlr->thread, _async_event_ns_notice, ctrlr);
873 3 : }
874 :
875 : static int
876 14 : nvmf_ns_visible(struct spdk_nvmf_subsystem *subsystem,
877 : uint32_t nsid,
878 : const char *hostnqn,
879 : bool visible)
880 : {
881 : struct spdk_nvmf_ns *ns;
882 : struct spdk_nvmf_ctrlr *ctrlr;
883 : struct spdk_nvmf_host *host;
884 : int rc;
885 :
886 14 : if (!(subsystem->state == SPDK_NVMF_SUBSYSTEM_INACTIVE ||
887 0 : subsystem->state == SPDK_NVMF_SUBSYSTEM_PAUSED)) {
888 0 : assert(false);
889 : return -1;
890 : }
891 :
892 14 : if (hostnqn == NULL || !nvmf_nqn_is_valid(hostnqn)) {
893 3 : return -EINVAL;
894 : }
895 :
896 11 : if (nsid == 0 || nsid > subsystem->max_nsid) {
897 2 : return -EINVAL;
898 : }
899 :
900 9 : ns = subsystem->ns[nsid - 1];
901 9 : if (!ns) {
902 2 : return -ENOENT;
903 : }
904 :
905 7 : if (ns->always_visible) {
906 : /* No individual host control */
907 2 : return -EPERM;
908 : }
909 :
910 : /* Save host info to use for any future controllers. */
911 5 : host = nvmf_ns_find_host(ns, hostnqn);
912 5 : if (visible && host == NULL) {
913 2 : rc = nvmf_ns_add_host(ns, hostnqn);
914 2 : if (rc) {
915 0 : return rc;
916 : }
917 3 : } else if (!visible && host != NULL) {
918 1 : nvmf_ns_remove_host(ns, host);
919 : }
920 :
921 : /* Also apply to existing controllers. */
922 15 : TAILQ_FOREACH(ctrlr, &subsystem->ctrlrs, link) {
923 15 : if (strcmp(hostnqn, ctrlr->hostnqn) ||
924 5 : nvmf_ctrlr_ns_is_visible(ctrlr, nsid) == visible) {
925 7 : continue;
926 : }
927 3 : nvmf_ctrlr_ns_set_visible(ctrlr, nsid, visible);
928 3 : send_async_event_ns_notice(ctrlr);
929 3 : nvmf_ctrlr_ns_changed(ctrlr, nsid);
930 : }
931 :
932 5 : return 0;
933 : }
934 :
935 : int
936 8 : spdk_nvmf_ns_add_host(struct spdk_nvmf_subsystem *subsystem,
937 : uint32_t nsid,
938 : const char *hostnqn,
939 : uint32_t flags)
940 : {
941 : SPDK_DTRACE_PROBE4(spdk_nvmf_ns_add_host,
942 : subsystem->subnqn,
943 : nsid,
944 : hostnqn,
945 : flags);
946 8 : return nvmf_ns_visible(subsystem, nsid, hostnqn, true);
947 : }
948 :
949 : int
950 6 : spdk_nvmf_ns_remove_host(struct spdk_nvmf_subsystem *subsystem,
951 : uint32_t nsid,
952 : const char *hostnqn,
953 : uint32_t flags)
954 : {
955 : SPDK_DTRACE_PROBE4(spdk_nvmf_ns_remove_host,
956 : subsystem->subnqn,
957 : nsid,
958 : hostnqn,
959 : flags);
960 6 : return nvmf_ns_visible(subsystem, nsid, hostnqn, false);
961 : }
962 :
963 : /* Must hold subsystem->mutex while calling this function */
964 : static struct spdk_nvmf_host *
965 14 : nvmf_subsystem_find_host(struct spdk_nvmf_subsystem *subsystem, const char *hostnqn)
966 : {
967 14 : struct spdk_nvmf_host *host = NULL;
968 :
969 14 : TAILQ_FOREACH(host, &subsystem->hosts, link) {
970 9 : if (strcmp(hostnqn, host->nqn) == 0) {
971 9 : return host;
972 : }
973 : }
974 :
975 5 : return NULL;
976 : }
977 :
978 : int
979 4 : spdk_nvmf_subsystem_add_host_ext(struct spdk_nvmf_subsystem *subsystem,
980 : const char *hostnqn, struct spdk_nvmf_host_opts *opts)
981 : {
982 : struct spdk_nvmf_host *host;
983 : struct spdk_nvmf_transport *transport;
984 : struct spdk_key *key;
985 : int rc;
986 :
987 4 : if (!nvmf_nqn_is_valid(hostnqn)) {
988 0 : return -EINVAL;
989 : }
990 :
991 4 : pthread_mutex_lock(&subsystem->mutex);
992 :
993 4 : if (nvmf_subsystem_find_host(subsystem, hostnqn)) {
994 : /* This subsystem already allows the specified host. */
995 1 : pthread_mutex_unlock(&subsystem->mutex);
996 1 : return -EINVAL;
997 : }
998 :
999 3 : host = calloc(1, sizeof(*host));
1000 3 : if (!host) {
1001 0 : pthread_mutex_unlock(&subsystem->mutex);
1002 0 : return -ENOMEM;
1003 : }
1004 :
1005 3 : key = SPDK_GET_FIELD(opts, dhchap_key, NULL);
1006 3 : if (key != NULL) {
1007 0 : if (!nvmf_auth_is_supported()) {
1008 0 : SPDK_ERRLOG("NVMe in-band authentication is unsupported\n");
1009 0 : pthread_mutex_unlock(&subsystem->mutex);
1010 0 : nvmf_host_free(host);
1011 0 : return -EINVAL;
1012 : }
1013 0 : host->dhchap_key = spdk_key_dup(key);
1014 0 : if (host->dhchap_key == NULL) {
1015 0 : pthread_mutex_unlock(&subsystem->mutex);
1016 0 : nvmf_host_free(host);
1017 0 : return -EINVAL;
1018 : }
1019 0 : key = SPDK_GET_FIELD(opts, dhchap_ctrlr_key, NULL);
1020 0 : if (key != NULL) {
1021 0 : host->dhchap_ctrlr_key = spdk_key_dup(key);
1022 0 : if (host->dhchap_ctrlr_key == NULL) {
1023 0 : pthread_mutex_unlock(&subsystem->mutex);
1024 0 : nvmf_host_free(host);
1025 0 : return -EINVAL;
1026 : }
1027 : }
1028 3 : } else if (SPDK_GET_FIELD(opts, dhchap_ctrlr_key, NULL) != NULL) {
1029 0 : SPDK_ERRLOG("DH-HMAC-CHAP controller key requires host key to be set\n");
1030 0 : pthread_mutex_unlock(&subsystem->mutex);
1031 0 : nvmf_host_free(host);
1032 0 : return -EINVAL;
1033 : }
1034 :
1035 3 : snprintf(host->nqn, sizeof(host->nqn), "%s", hostnqn);
1036 :
1037 : SPDK_DTRACE_PROBE2(nvmf_subsystem_add_host, subsystem->subnqn, host->nqn);
1038 :
1039 3 : TAILQ_INSERT_HEAD(&subsystem->hosts, host, link);
1040 :
1041 3 : if (!TAILQ_EMPTY(&subsystem->listeners)) {
1042 0 : spdk_nvmf_send_discovery_log_notice(subsystem->tgt, hostnqn);
1043 : }
1044 :
1045 3 : for (transport = spdk_nvmf_transport_get_first(subsystem->tgt); transport;
1046 0 : transport = spdk_nvmf_transport_get_next(transport)) {
1047 1 : if (transport->ops->subsystem_add_host) {
1048 2 : rc = transport->ops->subsystem_add_host(transport, subsystem, hostnqn,
1049 1 : SPDK_GET_FIELD(opts, params, NULL));
1050 1 : if (rc) {
1051 1 : SPDK_ERRLOG("Unable to add host to %s transport\n", transport->ops->name);
1052 : /* Remove this host from all transports we've managed to add it to. */
1053 1 : pthread_mutex_unlock(&subsystem->mutex);
1054 1 : spdk_nvmf_subsystem_remove_host(subsystem, hostnqn);
1055 1 : return rc;
1056 : }
1057 : }
1058 : }
1059 :
1060 2 : pthread_mutex_unlock(&subsystem->mutex);
1061 :
1062 2 : return 0;
1063 : }
1064 :
1065 : int
1066 4 : spdk_nvmf_subsystem_add_host(struct spdk_nvmf_subsystem *subsystem, const char *hostnqn,
1067 : const struct spdk_json_val *params)
1068 : {
1069 4 : struct spdk_nvmf_host_opts opts = {};
1070 :
1071 4 : opts.size = SPDK_SIZEOF(&opts, params);
1072 4 : opts.params = params;
1073 :
1074 4 : return spdk_nvmf_subsystem_add_host_ext(subsystem, hostnqn, &opts);
1075 : }
1076 :
1077 : int
1078 4 : spdk_nvmf_subsystem_remove_host(struct spdk_nvmf_subsystem *subsystem, const char *hostnqn)
1079 : {
1080 : struct spdk_nvmf_host *host;
1081 : struct spdk_nvmf_transport *transport;
1082 :
1083 4 : pthread_mutex_lock(&subsystem->mutex);
1084 :
1085 4 : host = nvmf_subsystem_find_host(subsystem, hostnqn);
1086 4 : if (host == NULL) {
1087 1 : pthread_mutex_unlock(&subsystem->mutex);
1088 1 : return -ENOENT;
1089 : }
1090 :
1091 : SPDK_DTRACE_PROBE2(nvmf_subsystem_remove_host, subsystem->subnqn, host->nqn);
1092 :
1093 3 : nvmf_subsystem_remove_host(subsystem, host);
1094 :
1095 3 : if (!TAILQ_EMPTY(&subsystem->listeners)) {
1096 1 : spdk_nvmf_send_discovery_log_notice(subsystem->tgt, hostnqn);
1097 : }
1098 :
1099 4 : for (transport = spdk_nvmf_transport_get_first(subsystem->tgt); transport;
1100 1 : transport = spdk_nvmf_transport_get_next(transport)) {
1101 1 : if (transport->ops->subsystem_remove_host) {
1102 0 : transport->ops->subsystem_remove_host(transport, subsystem, hostnqn);
1103 : }
1104 : }
1105 :
1106 3 : pthread_mutex_unlock(&subsystem->mutex);
1107 :
1108 3 : return 0;
1109 : }
1110 :
1111 : int
1112 0 : spdk_nvmf_subsystem_set_keys(struct spdk_nvmf_subsystem *subsystem, const char *hostnqn,
1113 : struct spdk_nvmf_subsystem_key_opts *opts)
1114 : {
1115 : struct spdk_nvmf_host *host;
1116 : struct spdk_key *key, *ckey;
1117 :
1118 0 : if (!nvmf_auth_is_supported()) {
1119 0 : SPDK_ERRLOG("NVMe in-band authentication is unsupported\n");
1120 0 : return -EINVAL;
1121 : }
1122 :
1123 0 : pthread_mutex_lock(&subsystem->mutex);
1124 0 : host = nvmf_subsystem_find_host(subsystem, hostnqn);
1125 0 : if (host == NULL) {
1126 0 : pthread_mutex_unlock(&subsystem->mutex);
1127 0 : return -EINVAL;
1128 : }
1129 :
1130 0 : if (SPDK_GET_FIELD(opts, dhchap_key, host->dhchap_key) == NULL &&
1131 0 : SPDK_GET_FIELD(opts, dhchap_ctrlr_key, host->dhchap_ctrlr_key) != NULL) {
1132 0 : SPDK_ERRLOG("DH-HMAC-CHAP controller key requires host key to be set\n");
1133 0 : pthread_mutex_unlock(&subsystem->mutex);
1134 0 : return -EINVAL;
1135 : }
1136 0 : key = SPDK_GET_FIELD(opts, dhchap_key, NULL);
1137 0 : if (key != NULL) {
1138 0 : key = spdk_key_dup(key);
1139 0 : if (key == NULL) {
1140 0 : pthread_mutex_unlock(&subsystem->mutex);
1141 0 : return -EINVAL;
1142 : }
1143 : }
1144 0 : ckey = SPDK_GET_FIELD(opts, dhchap_ctrlr_key, NULL);
1145 0 : if (ckey != NULL) {
1146 0 : ckey = spdk_key_dup(ckey);
1147 0 : if (ckey == NULL) {
1148 0 : pthread_mutex_unlock(&subsystem->mutex);
1149 0 : spdk_keyring_put_key(key);
1150 0 : return -EINVAL;
1151 : }
1152 : }
1153 0 : if (SPDK_FIELD_VALID(opts, dhchap_key)) {
1154 0 : spdk_keyring_put_key(host->dhchap_key);
1155 0 : host->dhchap_key = key;
1156 : }
1157 0 : if (SPDK_FIELD_VALID(opts, dhchap_ctrlr_key)) {
1158 0 : spdk_keyring_put_key(host->dhchap_ctrlr_key);
1159 0 : host->dhchap_ctrlr_key = ckey;
1160 : }
1161 0 : pthread_mutex_unlock(&subsystem->mutex);
1162 :
1163 0 : return 0;
1164 : }
1165 :
1166 : struct nvmf_subsystem_disconnect_host_ctx {
1167 : struct spdk_nvmf_subsystem *subsystem;
1168 : char *hostnqn;
1169 : spdk_nvmf_tgt_subsystem_listen_done_fn cb_fn;
1170 : void *cb_arg;
1171 : };
1172 :
1173 : static void
1174 0 : nvmf_subsystem_disconnect_host_fini(struct spdk_io_channel_iter *i, int status)
1175 : {
1176 : struct nvmf_subsystem_disconnect_host_ctx *ctx;
1177 :
1178 0 : ctx = spdk_io_channel_iter_get_ctx(i);
1179 :
1180 0 : if (ctx->cb_fn) {
1181 0 : ctx->cb_fn(ctx->cb_arg, status);
1182 : }
1183 0 : free(ctx->hostnqn);
1184 0 : free(ctx);
1185 0 : }
1186 :
1187 : static void
1188 0 : nvmf_subsystem_disconnect_qpairs_by_host(struct spdk_io_channel_iter *i)
1189 : {
1190 : struct nvmf_subsystem_disconnect_host_ctx *ctx;
1191 : struct spdk_nvmf_poll_group *group;
1192 : struct spdk_io_channel *ch;
1193 : struct spdk_nvmf_qpair *qpair, *tmp_qpair;
1194 : struct spdk_nvmf_ctrlr *ctrlr;
1195 :
1196 0 : ctx = spdk_io_channel_iter_get_ctx(i);
1197 0 : ch = spdk_io_channel_iter_get_channel(i);
1198 0 : group = spdk_io_channel_get_ctx(ch);
1199 :
1200 0 : TAILQ_FOREACH_SAFE(qpair, &group->qpairs, link, tmp_qpair) {
1201 0 : ctrlr = qpair->ctrlr;
1202 :
1203 0 : if (ctrlr == NULL || ctrlr->subsys != ctx->subsystem) {
1204 0 : continue;
1205 : }
1206 :
1207 0 : if (strncmp(ctrlr->hostnqn, ctx->hostnqn, sizeof(ctrlr->hostnqn)) == 0) {
1208 : /* Right now this does not wait for the queue pairs to actually disconnect. */
1209 0 : spdk_nvmf_qpair_disconnect(qpair);
1210 : }
1211 : }
1212 0 : spdk_for_each_channel_continue(i, 0);
1213 0 : }
1214 :
1215 : int
1216 0 : spdk_nvmf_subsystem_disconnect_host(struct spdk_nvmf_subsystem *subsystem,
1217 : const char *hostnqn,
1218 : spdk_nvmf_tgt_subsystem_listen_done_fn cb_fn,
1219 : void *cb_arg)
1220 : {
1221 : struct nvmf_subsystem_disconnect_host_ctx *ctx;
1222 :
1223 0 : ctx = calloc(1, sizeof(struct nvmf_subsystem_disconnect_host_ctx));
1224 0 : if (ctx == NULL) {
1225 0 : return -ENOMEM;
1226 : }
1227 :
1228 0 : ctx->hostnqn = strdup(hostnqn);
1229 0 : if (ctx->hostnqn == NULL) {
1230 0 : free(ctx);
1231 0 : return -ENOMEM;
1232 : }
1233 :
1234 0 : ctx->subsystem = subsystem;
1235 0 : ctx->cb_fn = cb_fn;
1236 0 : ctx->cb_arg = cb_arg;
1237 :
1238 0 : spdk_for_each_channel(subsystem->tgt, nvmf_subsystem_disconnect_qpairs_by_host, ctx,
1239 : nvmf_subsystem_disconnect_host_fini);
1240 :
1241 0 : return 0;
1242 : }
1243 :
1244 : int
1245 0 : spdk_nvmf_subsystem_set_allow_any_host(struct spdk_nvmf_subsystem *subsystem, bool allow_any_host)
1246 : {
1247 0 : if (subsystem->allow_any_host == allow_any_host) {
1248 0 : return 0;
1249 : }
1250 :
1251 0 : pthread_mutex_lock(&subsystem->mutex);
1252 0 : subsystem->allow_any_host = allow_any_host;
1253 0 : if (!TAILQ_EMPTY(&subsystem->listeners)) {
1254 0 : spdk_nvmf_send_discovery_log_notice(subsystem->tgt, NULL);
1255 : }
1256 0 : pthread_mutex_unlock(&subsystem->mutex);
1257 :
1258 0 : return 0;
1259 : }
1260 :
1261 : bool
1262 0 : spdk_nvmf_subsystem_get_allow_any_host(const struct spdk_nvmf_subsystem *subsystem)
1263 : {
1264 : bool allow_any_host;
1265 : struct spdk_nvmf_subsystem *sub;
1266 :
1267 : /* Technically, taking the mutex modifies data in the subsystem. But the const
1268 : * is still important to convey that this doesn't mutate any other data. Cast
1269 : * it away to work around this. */
1270 0 : sub = (struct spdk_nvmf_subsystem *)subsystem;
1271 :
1272 0 : pthread_mutex_lock(&sub->mutex);
1273 0 : allow_any_host = sub->allow_any_host;
1274 0 : pthread_mutex_unlock(&sub->mutex);
1275 :
1276 0 : return allow_any_host;
1277 : }
1278 :
1279 : bool
1280 31 : spdk_nvmf_subsystem_host_allowed(struct spdk_nvmf_subsystem *subsystem, const char *hostnqn)
1281 : {
1282 : bool allowed;
1283 :
1284 31 : if (!hostnqn) {
1285 0 : return false;
1286 : }
1287 :
1288 31 : pthread_mutex_lock(&subsystem->mutex);
1289 :
1290 31 : if (subsystem->allow_any_host) {
1291 25 : pthread_mutex_unlock(&subsystem->mutex);
1292 25 : return true;
1293 : }
1294 :
1295 6 : allowed = nvmf_subsystem_find_host(subsystem, hostnqn) != NULL;
1296 6 : pthread_mutex_unlock(&subsystem->mutex);
1297 :
1298 6 : return allowed;
1299 : }
1300 :
1301 : bool
1302 0 : nvmf_subsystem_host_auth_required(struct spdk_nvmf_subsystem *subsystem, const char *hostnqn)
1303 : {
1304 : struct spdk_nvmf_host *host;
1305 : bool status;
1306 :
1307 0 : pthread_mutex_lock(&subsystem->mutex);
1308 0 : host = nvmf_subsystem_find_host(subsystem, hostnqn);
1309 0 : status = host != NULL && host->dhchap_key != NULL;
1310 0 : pthread_mutex_unlock(&subsystem->mutex);
1311 :
1312 0 : return status;
1313 : }
1314 :
1315 : struct spdk_key *
1316 0 : nvmf_subsystem_get_dhchap_key(struct spdk_nvmf_subsystem *subsystem, const char *hostnqn,
1317 : enum nvmf_auth_key_type type)
1318 : {
1319 : struct spdk_nvmf_host *host;
1320 0 : struct spdk_key *key = NULL;
1321 :
1322 0 : pthread_mutex_lock(&subsystem->mutex);
1323 0 : host = nvmf_subsystem_find_host(subsystem, hostnqn);
1324 0 : if (host != NULL) {
1325 0 : switch (type) {
1326 0 : case NVMF_AUTH_KEY_HOST:
1327 0 : key = host->dhchap_key;
1328 0 : break;
1329 0 : case NVMF_AUTH_KEY_CTRLR:
1330 0 : key = host->dhchap_ctrlr_key;
1331 0 : break;
1332 : }
1333 0 : if (key != NULL) {
1334 0 : key = spdk_key_dup(key);
1335 : }
1336 : }
1337 0 : pthread_mutex_unlock(&subsystem->mutex);
1338 :
1339 0 : return key;
1340 : }
1341 :
1342 : struct spdk_nvmf_host *
1343 0 : spdk_nvmf_subsystem_get_first_host(struct spdk_nvmf_subsystem *subsystem)
1344 : {
1345 0 : return TAILQ_FIRST(&subsystem->hosts);
1346 : }
1347 :
1348 :
1349 : struct spdk_nvmf_host *
1350 0 : spdk_nvmf_subsystem_get_next_host(struct spdk_nvmf_subsystem *subsystem,
1351 : struct spdk_nvmf_host *prev_host)
1352 : {
1353 0 : return TAILQ_NEXT(prev_host, link);
1354 : }
1355 :
1356 : const char *
1357 0 : spdk_nvmf_host_get_nqn(const struct spdk_nvmf_host *host)
1358 : {
1359 0 : return host->nqn;
1360 : }
1361 :
1362 : struct spdk_nvmf_subsystem_listener *
1363 7 : nvmf_subsystem_find_listener(struct spdk_nvmf_subsystem *subsystem,
1364 : const struct spdk_nvme_transport_id *trid)
1365 : {
1366 : struct spdk_nvmf_subsystem_listener *listener;
1367 :
1368 22 : TAILQ_FOREACH(listener, &subsystem->listeners, link) {
1369 15 : if (spdk_nvme_transport_id_compare(listener->trid, trid) == 0) {
1370 0 : return listener;
1371 : }
1372 : }
1373 :
1374 7 : return NULL;
1375 : }
1376 :
1377 : /**
1378 : * Function to be called once the target is listening.
1379 : *
1380 : * \param ctx Context argument passed to this function.
1381 : * \param status 0 if it completed successfully, or negative errno if it failed.
1382 : */
1383 : static void
1384 7 : _nvmf_subsystem_add_listener_done(void *ctx, int status)
1385 : {
1386 7 : struct spdk_nvmf_subsystem_listener *listener = ctx;
1387 :
1388 7 : if (status) {
1389 0 : listener->cb_fn(listener->cb_arg, status);
1390 0 : free(listener);
1391 0 : return;
1392 : }
1393 :
1394 7 : TAILQ_INSERT_HEAD(&listener->subsystem->listeners, listener, link);
1395 :
1396 7 : if (spdk_nvmf_subsystem_is_discovery(listener->subsystem)) {
1397 0 : status = nvmf_tgt_update_mdns_prr(listener->subsystem->tgt);
1398 0 : if (status) {
1399 0 : TAILQ_REMOVE(&listener->subsystem->listeners, listener, link);
1400 0 : listener->cb_fn(listener->cb_arg, status);
1401 0 : free(listener);
1402 0 : return;
1403 : }
1404 : }
1405 :
1406 7 : spdk_nvmf_send_discovery_log_notice(listener->subsystem->tgt, NULL);
1407 7 : listener->cb_fn(listener->cb_arg, status);
1408 : }
1409 :
1410 : void
1411 7 : spdk_nvmf_subsystem_listener_opts_init(struct spdk_nvmf_listener_opts *opts, size_t size)
1412 : {
1413 7 : if (opts == NULL) {
1414 0 : SPDK_ERRLOG("opts should not be NULL\n");
1415 0 : assert(false);
1416 : return;
1417 : }
1418 7 : if (size == 0) {
1419 0 : SPDK_ERRLOG("size should not be zero\n");
1420 0 : assert(false);
1421 : return;
1422 : }
1423 :
1424 7 : memset(opts, 0, size);
1425 7 : opts->opts_size = size;
1426 :
1427 : #define FIELD_OK(field) \
1428 : offsetof(struct spdk_nvmf_listener_opts, field) + sizeof(opts->field) <= size
1429 :
1430 : #define SET_FIELD(field, value) \
1431 : if (FIELD_OK(field)) { \
1432 : opts->field = value; \
1433 : } \
1434 :
1435 7 : SET_FIELD(secure_channel, false);
1436 7 : SET_FIELD(ana_state, SPDK_NVME_ANA_OPTIMIZED_STATE);
1437 7 : SET_FIELD(sock_impl, NULL);
1438 :
1439 : #undef FIELD_OK
1440 : #undef SET_FIELD
1441 : }
1442 :
1443 : static int
1444 0 : listener_opts_copy(struct spdk_nvmf_listener_opts *src, struct spdk_nvmf_listener_opts *dst)
1445 : {
1446 0 : if (src->opts_size == 0) {
1447 0 : SPDK_ERRLOG("source structure size should not be zero\n");
1448 0 : assert(false);
1449 : return -EINVAL;
1450 : }
1451 :
1452 0 : memset(dst, 0, sizeof(*dst));
1453 0 : dst->opts_size = src->opts_size;
1454 :
1455 : #define FIELD_OK(field) \
1456 : offsetof(struct spdk_nvmf_listener_opts, field) + sizeof(src->field) <= src->opts_size
1457 :
1458 : #define SET_FIELD(field) \
1459 : if (FIELD_OK(field)) { \
1460 : dst->field = src->field; \
1461 : } \
1462 :
1463 0 : SET_FIELD(secure_channel);
1464 0 : SET_FIELD(ana_state);
1465 0 : SET_FIELD(sock_impl);
1466 : /* We should not remove this statement, but need to update the assert statement
1467 : * if we add a new field, and also add a corresponding SET_FIELD statement. */
1468 : SPDK_STATIC_ASSERT(sizeof(struct spdk_nvmf_listener_opts) == 24, "Incorrect size");
1469 :
1470 : #undef SET_FIELD
1471 : #undef FIELD_OK
1472 :
1473 0 : return 0;
1474 : }
1475 :
1476 : static void
1477 7 : _nvmf_subsystem_add_listener(struct spdk_nvmf_subsystem *subsystem,
1478 : struct spdk_nvme_transport_id *trid,
1479 : spdk_nvmf_tgt_subsystem_listen_done_fn cb_fn,
1480 : void *cb_arg, struct spdk_nvmf_listener_opts *opts)
1481 : {
1482 : struct spdk_nvmf_transport *transport;
1483 : struct spdk_nvmf_subsystem_listener *listener;
1484 : struct spdk_nvmf_listener *tr_listener;
1485 : uint32_t i;
1486 : uint32_t id;
1487 7 : int rc = 0;
1488 :
1489 7 : assert(cb_fn != NULL);
1490 :
1491 7 : if (!(subsystem->state == SPDK_NVMF_SUBSYSTEM_INACTIVE ||
1492 0 : subsystem->state == SPDK_NVMF_SUBSYSTEM_PAUSED)) {
1493 0 : cb_fn(cb_arg, -EAGAIN);
1494 0 : return;
1495 : }
1496 :
1497 7 : if (nvmf_subsystem_find_listener(subsystem, trid)) {
1498 : /* Listener already exists in this subsystem */
1499 0 : cb_fn(cb_arg, 0);
1500 0 : return;
1501 : }
1502 :
1503 7 : transport = spdk_nvmf_tgt_get_transport(subsystem->tgt, trid->trstring);
1504 7 : if (!transport) {
1505 0 : SPDK_ERRLOG("Unable to find %s transport. The transport must be created first also make sure it is properly registered.\n",
1506 : trid->trstring);
1507 0 : cb_fn(cb_arg, -EINVAL);
1508 0 : return;
1509 : }
1510 :
1511 7 : tr_listener = nvmf_transport_find_listener(transport, trid);
1512 7 : if (!tr_listener) {
1513 0 : SPDK_ERRLOG("Cannot find transport listener for %s\n", trid->traddr);
1514 0 : cb_fn(cb_arg, -EINVAL);
1515 0 : return;
1516 : }
1517 :
1518 7 : listener = calloc(1, sizeof(*listener));
1519 7 : if (!listener) {
1520 0 : cb_fn(cb_arg, -ENOMEM);
1521 0 : return;
1522 : }
1523 :
1524 7 : listener->trid = &tr_listener->trid;
1525 7 : listener->transport = transport;
1526 7 : listener->cb_fn = cb_fn;
1527 7 : listener->cb_arg = cb_arg;
1528 7 : listener->subsystem = subsystem;
1529 7 : listener->ana_state = calloc(subsystem->max_nsid, sizeof(enum spdk_nvme_ana_state));
1530 7 : if (!listener->ana_state) {
1531 0 : free(listener);
1532 0 : cb_fn(cb_arg, -ENOMEM);
1533 0 : return;
1534 : }
1535 :
1536 7 : spdk_nvmf_subsystem_listener_opts_init(&listener->opts, sizeof(listener->opts));
1537 7 : if (opts != NULL) {
1538 0 : rc = listener_opts_copy(opts, &listener->opts);
1539 0 : if (rc) {
1540 0 : SPDK_ERRLOG("Unable to copy listener options\n");
1541 0 : free(listener->ana_state);
1542 0 : free(listener);
1543 0 : cb_fn(cb_arg, -EINVAL);
1544 0 : return;
1545 : }
1546 : }
1547 :
1548 7 : id = spdk_bit_array_find_first_clear(subsystem->used_listener_ids, 0);
1549 7 : if (id == UINT32_MAX) {
1550 0 : SPDK_ERRLOG("Cannot add any more listeners\n");
1551 0 : free(listener->ana_state);
1552 0 : free(listener->opts.sock_impl);
1553 0 : free(listener);
1554 0 : cb_fn(cb_arg, -EINVAL);
1555 0 : return;
1556 : }
1557 :
1558 7 : spdk_bit_array_set(subsystem->used_listener_ids, id);
1559 7 : listener->id = id;
1560 :
1561 231 : for (i = 0; i < subsystem->max_nsid; i++) {
1562 224 : listener->ana_state[i] = listener->opts.ana_state;
1563 : }
1564 :
1565 7 : if (transport->ops->listen_associate != NULL) {
1566 0 : rc = transport->ops->listen_associate(transport, subsystem, trid);
1567 : }
1568 :
1569 : SPDK_DTRACE_PROBE4(nvmf_subsystem_add_listener, subsystem->subnqn, listener->trid->trtype,
1570 : listener->trid->traddr, listener->trid->trsvcid);
1571 :
1572 7 : _nvmf_subsystem_add_listener_done(listener, rc);
1573 : }
1574 :
1575 : void
1576 7 : spdk_nvmf_subsystem_add_listener(struct spdk_nvmf_subsystem *subsystem,
1577 : struct spdk_nvme_transport_id *trid,
1578 : spdk_nvmf_tgt_subsystem_listen_done_fn cb_fn,
1579 : void *cb_arg)
1580 : {
1581 7 : _nvmf_subsystem_add_listener(subsystem, trid, cb_fn, cb_arg, NULL);
1582 7 : }
1583 :
1584 : void
1585 0 : spdk_nvmf_subsystem_add_listener_ext(struct spdk_nvmf_subsystem *subsystem,
1586 : struct spdk_nvme_transport_id *trid,
1587 : spdk_nvmf_tgt_subsystem_listen_done_fn cb_fn,
1588 : void *cb_arg, struct spdk_nvmf_listener_opts *opts)
1589 : {
1590 0 : _nvmf_subsystem_add_listener(subsystem, trid, cb_fn, cb_arg, opts);
1591 0 : }
1592 :
1593 : int
1594 0 : spdk_nvmf_subsystem_remove_listener(struct spdk_nvmf_subsystem *subsystem,
1595 : const struct spdk_nvme_transport_id *trid)
1596 : {
1597 : struct spdk_nvmf_subsystem_listener *listener;
1598 :
1599 0 : if (!(subsystem->state == SPDK_NVMF_SUBSYSTEM_INACTIVE ||
1600 0 : subsystem->state == SPDK_NVMF_SUBSYSTEM_PAUSED)) {
1601 0 : return -EAGAIN;
1602 : }
1603 :
1604 0 : listener = nvmf_subsystem_find_listener(subsystem, trid);
1605 0 : if (listener == NULL) {
1606 0 : return -ENOENT;
1607 : }
1608 :
1609 : SPDK_DTRACE_PROBE4(nvmf_subsystem_remove_listener, subsystem->subnqn, listener->trid->trtype,
1610 : listener->trid->traddr, listener->trid->trsvcid);
1611 :
1612 0 : _nvmf_subsystem_remove_listener(subsystem, listener, false);
1613 :
1614 0 : return 0;
1615 : }
1616 :
1617 : void
1618 13 : nvmf_subsystem_remove_all_listeners(struct spdk_nvmf_subsystem *subsystem,
1619 : bool stop)
1620 : {
1621 : struct spdk_nvmf_subsystem_listener *listener, *listener_tmp;
1622 :
1623 20 : TAILQ_FOREACH_SAFE(listener, &subsystem->listeners, link, listener_tmp) {
1624 7 : _nvmf_subsystem_remove_listener(subsystem, listener, stop);
1625 : }
1626 13 : }
1627 :
1628 : bool
1629 0 : spdk_nvmf_subsystem_listener_allowed(struct spdk_nvmf_subsystem *subsystem,
1630 : const struct spdk_nvme_transport_id *trid)
1631 : {
1632 : struct spdk_nvmf_subsystem_listener *listener;
1633 :
1634 0 : TAILQ_FOREACH(listener, &subsystem->listeners, link) {
1635 0 : if (spdk_nvme_transport_id_compare(listener->trid, trid) == 0) {
1636 0 : return true;
1637 : }
1638 : }
1639 :
1640 0 : if (!strcmp(subsystem->subnqn, SPDK_NVMF_DISCOVERY_NQN)) {
1641 0 : SPDK_WARNLOG("Allowing connection to discovery subsystem on %s/%s/%s, "
1642 : "even though this listener was not added to the discovery "
1643 : "subsystem. This behavior is deprecated and will be removed "
1644 : "in a future release.\n",
1645 : spdk_nvme_transport_id_trtype_str(trid->trtype), trid->traddr, trid->trsvcid);
1646 0 : return true;
1647 : }
1648 :
1649 0 : return false;
1650 : }
1651 :
1652 : struct spdk_nvmf_subsystem_listener *
1653 30 : spdk_nvmf_subsystem_get_first_listener(struct spdk_nvmf_subsystem *subsystem)
1654 : {
1655 30 : return TAILQ_FIRST(&subsystem->listeners);
1656 : }
1657 :
1658 : struct spdk_nvmf_subsystem_listener *
1659 155 : spdk_nvmf_subsystem_get_next_listener(struct spdk_nvmf_subsystem *subsystem,
1660 : struct spdk_nvmf_subsystem_listener *prev_listener)
1661 : {
1662 155 : return TAILQ_NEXT(prev_listener, link);
1663 : }
1664 :
1665 : const struct spdk_nvme_transport_id *
1666 0 : spdk_nvmf_subsystem_listener_get_trid(struct spdk_nvmf_subsystem_listener *listener)
1667 : {
1668 0 : return listener->trid;
1669 : }
1670 :
1671 : void
1672 0 : spdk_nvmf_subsystem_allow_any_listener(struct spdk_nvmf_subsystem *subsystem,
1673 : bool allow_any_listener)
1674 : {
1675 0 : subsystem->flags.allow_any_listener = allow_any_listener;
1676 0 : }
1677 :
1678 : bool
1679 0 : spdk_nvmf_subsystem_any_listener_allowed(struct spdk_nvmf_subsystem *subsystem)
1680 : {
1681 0 : return subsystem->flags.allow_any_listener;
1682 : }
1683 :
1684 : struct subsystem_update_ns_ctx {
1685 : struct spdk_nvmf_subsystem *subsystem;
1686 :
1687 : spdk_nvmf_subsystem_state_change_done cb_fn;
1688 : void *cb_arg;
1689 : };
1690 :
1691 : static void
1692 0 : subsystem_update_ns_done(struct spdk_io_channel_iter *i, int status)
1693 : {
1694 0 : struct subsystem_update_ns_ctx *ctx = spdk_io_channel_iter_get_ctx(i);
1695 :
1696 0 : if (ctx->cb_fn) {
1697 0 : ctx->cb_fn(ctx->subsystem, ctx->cb_arg, status);
1698 : }
1699 0 : free(ctx);
1700 0 : }
1701 :
1702 : static void
1703 0 : subsystem_update_ns_on_pg(struct spdk_io_channel_iter *i)
1704 : {
1705 : int rc;
1706 : struct subsystem_update_ns_ctx *ctx;
1707 : struct spdk_nvmf_poll_group *group;
1708 : struct spdk_nvmf_subsystem *subsystem;
1709 :
1710 0 : ctx = spdk_io_channel_iter_get_ctx(i);
1711 0 : group = spdk_io_channel_get_ctx(spdk_io_channel_iter_get_channel(i));
1712 0 : subsystem = ctx->subsystem;
1713 :
1714 0 : rc = nvmf_poll_group_update_subsystem(group, subsystem);
1715 0 : spdk_for_each_channel_continue(i, rc);
1716 0 : }
1717 :
1718 : static int
1719 0 : nvmf_subsystem_update_ns(struct spdk_nvmf_subsystem *subsystem,
1720 : spdk_nvmf_subsystem_state_change_done cb_fn, void *cb_arg)
1721 : {
1722 : struct subsystem_update_ns_ctx *ctx;
1723 :
1724 0 : ctx = calloc(1, sizeof(*ctx));
1725 0 : if (ctx == NULL) {
1726 0 : SPDK_ERRLOG("Can't alloc subsystem poll group update context\n");
1727 0 : return -ENOMEM;
1728 : }
1729 0 : ctx->subsystem = subsystem;
1730 0 : ctx->cb_fn = cb_fn;
1731 0 : ctx->cb_arg = cb_arg;
1732 :
1733 0 : spdk_for_each_channel(subsystem->tgt,
1734 : subsystem_update_ns_on_pg,
1735 : ctx,
1736 : subsystem_update_ns_done);
1737 0 : return 0;
1738 : }
1739 :
1740 : static void
1741 10 : nvmf_subsystem_ns_changed(struct spdk_nvmf_subsystem *subsystem, uint32_t nsid)
1742 : {
1743 : struct spdk_nvmf_ctrlr *ctrlr;
1744 :
1745 14 : TAILQ_FOREACH(ctrlr, &subsystem->ctrlrs, link) {
1746 4 : if (nvmf_ctrlr_ns_is_visible(ctrlr, nsid)) {
1747 3 : nvmf_ctrlr_ns_changed(ctrlr, nsid);
1748 : }
1749 : }
1750 10 : }
1751 :
1752 : static uint32_t nvmf_ns_reservation_clear_all_registrants(struct spdk_nvmf_ns *ns);
1753 :
1754 : int
1755 5 : spdk_nvmf_subsystem_remove_ns(struct spdk_nvmf_subsystem *subsystem, uint32_t nsid)
1756 : {
1757 : struct spdk_nvmf_transport *transport;
1758 : struct spdk_nvmf_ns *ns;
1759 : struct spdk_nvmf_host *host, *tmp;
1760 : struct spdk_nvmf_ctrlr *ctrlr;
1761 :
1762 5 : if (!(subsystem->state == SPDK_NVMF_SUBSYSTEM_INACTIVE ||
1763 1 : subsystem->state == SPDK_NVMF_SUBSYSTEM_PAUSED)) {
1764 0 : assert(false);
1765 : return -1;
1766 : }
1767 :
1768 5 : if (nsid == 0 || nsid > subsystem->max_nsid) {
1769 0 : return -1;
1770 : }
1771 :
1772 5 : ns = subsystem->ns[nsid - 1];
1773 5 : if (!ns) {
1774 0 : return -1;
1775 : }
1776 :
1777 5 : subsystem->ns[nsid - 1] = NULL;
1778 :
1779 5 : assert(ns->anagrpid - 1 < subsystem->max_nsid);
1780 5 : assert(subsystem->ana_group[ns->anagrpid - 1] > 0);
1781 :
1782 5 : subsystem->ana_group[ns->anagrpid - 1]--;
1783 :
1784 6 : TAILQ_FOREACH_SAFE(host, &ns->hosts, link, tmp) {
1785 1 : nvmf_ns_remove_host(ns, host);
1786 : }
1787 :
1788 5 : free(ns->ptpl_file);
1789 5 : nvmf_ns_reservation_clear_all_registrants(ns);
1790 5 : spdk_bdev_module_release_bdev(ns->bdev);
1791 5 : spdk_bdev_close(ns->desc);
1792 5 : free(ns);
1793 :
1794 5 : if (subsystem->fdp_supported && !spdk_nvmf_subsystem_get_first_ns(subsystem)) {
1795 1 : subsystem->fdp_supported = false;
1796 1 : SPDK_DEBUGLOG(nvmf, "Subsystem with id: %u doesn't have FDP capability.\n",
1797 : subsystem->id);
1798 : }
1799 :
1800 5 : for (transport = spdk_nvmf_transport_get_first(subsystem->tgt); transport;
1801 0 : transport = spdk_nvmf_transport_get_next(transport)) {
1802 0 : if (transport->ops->subsystem_remove_ns) {
1803 0 : transport->ops->subsystem_remove_ns(transport, subsystem, nsid);
1804 : }
1805 : }
1806 :
1807 5 : nvmf_subsystem_ns_changed(subsystem, nsid);
1808 :
1809 8 : TAILQ_FOREACH(ctrlr, &subsystem->ctrlrs, link) {
1810 3 : nvmf_ctrlr_ns_set_visible(ctrlr, nsid, false);
1811 : }
1812 :
1813 5 : return 0;
1814 : }
1815 :
1816 : struct subsystem_ns_change_ctx {
1817 : struct spdk_nvmf_subsystem *subsystem;
1818 : spdk_nvmf_subsystem_state_change_done cb_fn;
1819 : uint32_t nsid;
1820 : };
1821 :
1822 : static void
1823 1 : _nvmf_ns_hot_remove(struct spdk_nvmf_subsystem *subsystem,
1824 : void *cb_arg, int status)
1825 : {
1826 1 : struct subsystem_ns_change_ctx *ctx = cb_arg;
1827 : int rc;
1828 :
1829 1 : rc = spdk_nvmf_subsystem_remove_ns(subsystem, ctx->nsid);
1830 1 : if (rc != 0) {
1831 0 : SPDK_ERRLOG("Failed to make changes to NVME-oF subsystem with id: %u\n", subsystem->id);
1832 : }
1833 :
1834 1 : rc = spdk_nvmf_subsystem_resume(subsystem, NULL, NULL);
1835 1 : if (rc != 0) {
1836 0 : SPDK_ERRLOG("Failed to resume NVME-oF subsystem with id: %u\n", subsystem->id);
1837 : }
1838 :
1839 1 : free(ctx);
1840 1 : }
1841 :
1842 : static void
1843 0 : nvmf_ns_change_msg(void *ns_ctx)
1844 : {
1845 0 : struct subsystem_ns_change_ctx *ctx = ns_ctx;
1846 : int rc;
1847 :
1848 : SPDK_DTRACE_PROBE2(nvmf_ns_change, ctx->nsid, ctx->subsystem->subnqn);
1849 :
1850 0 : rc = spdk_nvmf_subsystem_pause(ctx->subsystem, ctx->nsid, ctx->cb_fn, ctx);
1851 0 : if (rc) {
1852 0 : if (rc == -EBUSY) {
1853 : /* Try again, this is not a permanent situation. */
1854 0 : spdk_thread_send_msg(spdk_get_thread(), nvmf_ns_change_msg, ctx);
1855 : } else {
1856 0 : free(ctx);
1857 0 : SPDK_ERRLOG("Unable to pause subsystem to process namespace removal!\n");
1858 : }
1859 : }
1860 0 : }
1861 :
1862 : static void
1863 1 : nvmf_ns_hot_remove(void *remove_ctx)
1864 : {
1865 1 : struct spdk_nvmf_ns *ns = remove_ctx;
1866 : struct subsystem_ns_change_ctx *ns_ctx;
1867 : int rc;
1868 :
1869 : /* We have to allocate a new context because this op
1870 : * is asynchronous and we could lose the ns in the middle.
1871 : */
1872 1 : ns_ctx = calloc(1, sizeof(struct subsystem_ns_change_ctx));
1873 1 : if (!ns_ctx) {
1874 0 : SPDK_ERRLOG("Unable to allocate context to process namespace removal!\n");
1875 0 : return;
1876 : }
1877 :
1878 1 : ns_ctx->subsystem = ns->subsystem;
1879 1 : ns_ctx->nsid = ns->opts.nsid;
1880 1 : ns_ctx->cb_fn = _nvmf_ns_hot_remove;
1881 :
1882 1 : rc = spdk_nvmf_subsystem_pause(ns->subsystem, ns_ctx->nsid, _nvmf_ns_hot_remove, ns_ctx);
1883 1 : if (rc) {
1884 0 : if (rc == -EBUSY) {
1885 : /* Try again, this is not a permanent situation. */
1886 0 : spdk_thread_send_msg(spdk_get_thread(), nvmf_ns_change_msg, ns_ctx);
1887 : } else {
1888 0 : SPDK_ERRLOG("Unable to pause subsystem to process namespace removal!\n");
1889 0 : free(ns_ctx);
1890 : }
1891 : }
1892 : }
1893 :
1894 : static void
1895 1 : _nvmf_ns_resize(struct spdk_nvmf_subsystem *subsystem, void *cb_arg, int status)
1896 : {
1897 1 : struct subsystem_ns_change_ctx *ctx = cb_arg;
1898 :
1899 1 : nvmf_subsystem_ns_changed(subsystem, ctx->nsid);
1900 1 : if (spdk_nvmf_subsystem_resume(subsystem, NULL, NULL) != 0) {
1901 0 : SPDK_ERRLOG("Failed to resume NVME-oF subsystem with id: %u\n", subsystem->id);
1902 : }
1903 :
1904 1 : free(ctx);
1905 1 : }
1906 :
1907 : static void
1908 1 : nvmf_ns_resize(void *event_ctx)
1909 : {
1910 1 : struct spdk_nvmf_ns *ns = event_ctx;
1911 : struct subsystem_ns_change_ctx *ns_ctx;
1912 : int rc;
1913 :
1914 : /* We have to allocate a new context because this op
1915 : * is asynchronous and we could lose the ns in the middle.
1916 : */
1917 1 : ns_ctx = calloc(1, sizeof(struct subsystem_ns_change_ctx));
1918 1 : if (!ns_ctx) {
1919 0 : SPDK_ERRLOG("Unable to allocate context to process namespace removal!\n");
1920 0 : return;
1921 : }
1922 :
1923 1 : ns_ctx->subsystem = ns->subsystem;
1924 1 : ns_ctx->nsid = ns->opts.nsid;
1925 1 : ns_ctx->cb_fn = _nvmf_ns_resize;
1926 :
1927 : /* Specify 0 for the nsid here, because we do not need to pause the namespace.
1928 : * Namespaces can only be resized bigger, so there is no need to quiesce I/O.
1929 : */
1930 1 : rc = spdk_nvmf_subsystem_pause(ns->subsystem, 0, _nvmf_ns_resize, ns_ctx);
1931 1 : if (rc) {
1932 0 : if (rc == -EBUSY) {
1933 : /* Try again, this is not a permanent situation. */
1934 0 : spdk_thread_send_msg(spdk_get_thread(), nvmf_ns_change_msg, ns_ctx);
1935 : } else {
1936 0 : SPDK_ERRLOG("Unable to pause subsystem to process namespace resize!\n");
1937 0 : free(ns_ctx);
1938 : }
1939 : }
1940 : }
1941 :
1942 : static void
1943 2 : nvmf_ns_event(enum spdk_bdev_event_type type,
1944 : struct spdk_bdev *bdev,
1945 : void *event_ctx)
1946 : {
1947 2 : SPDK_DEBUGLOG(nvmf, "Bdev event: type %d, name %s, subsystem_id %d, ns_id %d\n",
1948 : type,
1949 : spdk_bdev_get_name(bdev),
1950 : ((struct spdk_nvmf_ns *)event_ctx)->subsystem->id,
1951 : ((struct spdk_nvmf_ns *)event_ctx)->nsid);
1952 :
1953 2 : switch (type) {
1954 1 : case SPDK_BDEV_EVENT_REMOVE:
1955 1 : nvmf_ns_hot_remove(event_ctx);
1956 1 : break;
1957 1 : case SPDK_BDEV_EVENT_RESIZE:
1958 1 : nvmf_ns_resize(event_ctx);
1959 1 : break;
1960 0 : default:
1961 0 : SPDK_NOTICELOG("Unsupported bdev event: type %d\n", type);
1962 0 : break;
1963 : }
1964 2 : }
1965 :
1966 : void
1967 13 : spdk_nvmf_ns_opts_get_defaults(struct spdk_nvmf_ns_opts *opts, size_t opts_size)
1968 : {
1969 13 : if (!opts) {
1970 0 : SPDK_ERRLOG("opts should not be NULL.\n");
1971 0 : return;
1972 : }
1973 :
1974 13 : if (!opts_size) {
1975 0 : SPDK_ERRLOG("opts_size should not be zero.\n");
1976 0 : return;
1977 : }
1978 :
1979 13 : memset(opts, 0, opts_size);
1980 13 : opts->opts_size = opts_size;
1981 :
1982 : #define FIELD_OK(field) \
1983 : offsetof(struct spdk_nvmf_ns_opts, field) + sizeof(opts->field) <= opts_size
1984 :
1985 : #define SET_FIELD(field, value) \
1986 : if (FIELD_OK(field)) { \
1987 : opts->field = value; \
1988 : } \
1989 :
1990 : /* All current fields are set to 0 by default. */
1991 13 : SET_FIELD(nsid, 0);
1992 13 : if (FIELD_OK(nguid)) {
1993 13 : memset(opts->nguid, 0, sizeof(opts->nguid));
1994 : }
1995 13 : if (FIELD_OK(eui64)) {
1996 13 : memset(opts->eui64, 0, sizeof(opts->eui64));
1997 : }
1998 13 : if (FIELD_OK(uuid)) {
1999 13 : spdk_uuid_set_null(&opts->uuid);
2000 : }
2001 13 : SET_FIELD(anagrpid, 0);
2002 13 : SET_FIELD(transport_specific, NULL);
2003 13 : SET_FIELD(hide_metadata, false);
2004 :
2005 : #undef FIELD_OK
2006 : #undef SET_FIELD
2007 : }
2008 :
2009 : static void
2010 6 : nvmf_ns_opts_copy(struct spdk_nvmf_ns_opts *opts,
2011 : const struct spdk_nvmf_ns_opts *user_opts,
2012 : size_t opts_size)
2013 : {
2014 : #define FIELD_OK(field) \
2015 : offsetof(struct spdk_nvmf_ns_opts, field) + sizeof(opts->field) <= user_opts->opts_size
2016 :
2017 : #define SET_FIELD(field) \
2018 : if (FIELD_OK(field)) { \
2019 : opts->field = user_opts->field; \
2020 : } \
2021 :
2022 6 : SET_FIELD(nsid);
2023 6 : if (FIELD_OK(nguid)) {
2024 6 : memcpy(opts->nguid, user_opts->nguid, sizeof(opts->nguid));
2025 : }
2026 6 : if (FIELD_OK(eui64)) {
2027 6 : memcpy(opts->eui64, user_opts->eui64, sizeof(opts->eui64));
2028 : }
2029 6 : if (FIELD_OK(uuid)) {
2030 6 : spdk_uuid_copy(&opts->uuid, &user_opts->uuid);
2031 : }
2032 6 : SET_FIELD(anagrpid);
2033 6 : SET_FIELD(no_auto_visible);
2034 6 : SET_FIELD(transport_specific);
2035 6 : SET_FIELD(hide_metadata);
2036 :
2037 6 : opts->opts_size = user_opts->opts_size;
2038 :
2039 : /* We should not remove this statement, but need to update the assert statement
2040 : * if we add a new field, and also add a corresponding SET_FIELD statement.
2041 : */
2042 : SPDK_STATIC_ASSERT(sizeof(struct spdk_nvmf_ns_opts) == 73, "Incorrect size");
2043 :
2044 : #undef FIELD_OK
2045 : #undef SET_FIELD
2046 6 : }
2047 :
2048 : /* Dummy bdev module used to to claim bdevs. */
2049 : static struct spdk_bdev_module ns_bdev_module = {
2050 : .name = "NVMe-oF Target",
2051 : };
2052 :
2053 : static int nvmf_ns_reservation_update(const struct spdk_nvmf_ns *ns,
2054 : const struct spdk_nvmf_reservation_info *info);
2055 : static int nvmf_ns_reservation_load(const struct spdk_nvmf_ns *ns,
2056 : struct spdk_nvmf_reservation_info *info);
2057 : static int nvmf_ns_reservation_restore(struct spdk_nvmf_ns *ns,
2058 : struct spdk_nvmf_reservation_info *info);
2059 :
2060 : bool
2061 0 : nvmf_subsystem_zone_append_supported(struct spdk_nvmf_subsystem *subsystem)
2062 : {
2063 : struct spdk_nvmf_ns *ns;
2064 :
2065 0 : for (ns = spdk_nvmf_subsystem_get_first_ns(subsystem);
2066 0 : ns != NULL;
2067 0 : ns = spdk_nvmf_subsystem_get_next_ns(subsystem, ns)) {
2068 0 : if (spdk_bdev_is_zoned(ns->bdev) &&
2069 0 : spdk_bdev_io_type_supported(ns->bdev, SPDK_BDEV_IO_TYPE_ZONE_APPEND)) {
2070 0 : return true;
2071 : }
2072 : }
2073 :
2074 0 : return false;
2075 : }
2076 :
2077 : uint32_t
2078 7 : spdk_nvmf_subsystem_add_ns_ext(struct spdk_nvmf_subsystem *subsystem, const char *bdev_name,
2079 : const struct spdk_nvmf_ns_opts *user_opts, size_t opts_size,
2080 : const char *ptpl_file)
2081 : {
2082 : struct spdk_nvmf_transport *transport;
2083 7 : struct spdk_nvmf_ns_opts opts;
2084 7 : struct spdk_bdev_open_opts open_opts = {};
2085 : struct spdk_nvmf_ns *ns, *first_ns;
2086 : struct spdk_nvmf_ctrlr *ctrlr;
2087 7 : struct spdk_nvmf_reservation_info info = {0};
2088 : int rc;
2089 : bool zone_append_supported;
2090 : uint64_t max_zone_append_size_kib;
2091 :
2092 7 : if (!(subsystem->state == SPDK_NVMF_SUBSYSTEM_INACTIVE ||
2093 0 : subsystem->state == SPDK_NVMF_SUBSYSTEM_PAUSED)) {
2094 0 : return 0;
2095 : }
2096 :
2097 7 : spdk_nvmf_ns_opts_get_defaults(&opts, sizeof(opts));
2098 7 : if (user_opts) {
2099 6 : nvmf_ns_opts_copy(&opts, user_opts, opts_size);
2100 : }
2101 :
2102 7 : if (opts.nsid == SPDK_NVME_GLOBAL_NS_TAG) {
2103 1 : SPDK_ERRLOG("Invalid NSID %" PRIu32 "\n", opts.nsid);
2104 1 : return 0;
2105 : }
2106 :
2107 6 : if (opts.nsid == 0) {
2108 : /*
2109 : * NSID not specified - find a free index.
2110 : *
2111 : * If no free slots are found, return error.
2112 : */
2113 2 : for (opts.nsid = 1; opts.nsid <= subsystem->max_nsid; opts.nsid++) {
2114 2 : if (_nvmf_subsystem_get_ns(subsystem, opts.nsid) == NULL) {
2115 2 : break;
2116 : }
2117 : }
2118 2 : if (opts.nsid > subsystem->max_nsid) {
2119 0 : SPDK_ERRLOG("No free namespace slot available in the subsystem\n");
2120 0 : return 0;
2121 : }
2122 : }
2123 :
2124 6 : if (opts.nsid > subsystem->max_nsid) {
2125 0 : SPDK_ERRLOG("NSID greater than maximum not allowed\n");
2126 0 : return 0;
2127 : }
2128 :
2129 6 : if (_nvmf_subsystem_get_ns(subsystem, opts.nsid)) {
2130 1 : SPDK_ERRLOG("Requested NSID %" PRIu32 " already in use\n", opts.nsid);
2131 1 : return 0;
2132 : }
2133 :
2134 5 : if (opts.anagrpid == 0) {
2135 5 : opts.anagrpid = opts.nsid;
2136 : }
2137 :
2138 5 : if (opts.anagrpid > subsystem->max_nsid) {
2139 0 : SPDK_ERRLOG("ANAGRPID greater than maximum NSID not allowed\n");
2140 0 : return 0;
2141 : }
2142 :
2143 5 : ns = calloc(1, sizeof(*ns));
2144 5 : if (ns == NULL) {
2145 0 : SPDK_ERRLOG("Namespace allocation failed\n");
2146 0 : return 0;
2147 : }
2148 :
2149 5 : TAILQ_INIT(&ns->hosts);
2150 5 : ns->always_visible = !opts.no_auto_visible;
2151 5 : TAILQ_FOREACH(ctrlr, &subsystem->ctrlrs, link) {
2152 0 : nvmf_ctrlr_ns_set_visible(ctrlr, opts.nsid, ns->always_visible);
2153 : }
2154 :
2155 5 : spdk_bdev_open_opts_init(&open_opts, sizeof(open_opts));
2156 5 : open_opts.hide_metadata = opts.hide_metadata;
2157 :
2158 5 : rc = spdk_bdev_open_ext_v2(bdev_name, true, nvmf_ns_event, ns, &open_opts, &ns->desc);
2159 5 : if (rc != 0) {
2160 0 : SPDK_ERRLOG("Subsystem %s: bdev %s cannot be opened, error=%d\n",
2161 : subsystem->subnqn, bdev_name, rc);
2162 0 : free(ns);
2163 0 : return 0;
2164 : }
2165 :
2166 5 : ns->bdev = spdk_bdev_desc_get_bdev(ns->desc);
2167 :
2168 5 : if (spdk_bdev_desc_get_md_size(ns->desc) != 0) {
2169 0 : if (!spdk_bdev_desc_is_md_interleaved(ns->desc)) {
2170 0 : SPDK_ERRLOG("Can't attach bdev with separate metadata.\n");
2171 0 : spdk_bdev_close(ns->desc);
2172 0 : free(ns);
2173 0 : return 0;
2174 : }
2175 :
2176 0 : if (spdk_bdev_desc_get_md_size(ns->desc) > SPDK_BDEV_MAX_INTERLEAVED_MD_SIZE) {
2177 0 : SPDK_ERRLOG("Maximum supported interleaved md size %u, current md size %u\n",
2178 : SPDK_BDEV_MAX_INTERLEAVED_MD_SIZE,
2179 : spdk_bdev_desc_get_md_size(ns->desc));
2180 0 : spdk_bdev_close(ns->desc);
2181 0 : free(ns);
2182 0 : return 0;
2183 : }
2184 : }
2185 :
2186 5 : rc = spdk_bdev_module_claim_bdev(ns->bdev, ns->desc, &ns_bdev_module);
2187 5 : if (rc != 0) {
2188 0 : spdk_bdev_close(ns->desc);
2189 0 : free(ns);
2190 0 : return 0;
2191 : }
2192 :
2193 5 : ns->passthru_nsid = spdk_bdev_get_nvme_nsid(ns->bdev);
2194 5 : if (subsystem->passthrough && ns->passthru_nsid == 0) {
2195 0 : SPDK_ERRLOG("Only bdev_nvme namespaces can be added to a passthrough subsystem.\n");
2196 0 : goto err;
2197 : }
2198 :
2199 : /* Cache the zcopy capability of the bdev device */
2200 5 : ns->zcopy = spdk_bdev_io_type_supported(ns->bdev, SPDK_BDEV_IO_TYPE_ZCOPY);
2201 :
2202 5 : if (spdk_uuid_is_null(&opts.uuid)) {
2203 5 : opts.uuid = *spdk_bdev_get_uuid(ns->bdev);
2204 : }
2205 :
2206 : /* if nguid descriptor is supported by bdev module (nvme) then uuid = nguid */
2207 5 : if (spdk_mem_all_zero(opts.nguid, sizeof(opts.nguid))) {
2208 : SPDK_STATIC_ASSERT(sizeof(opts.nguid) == sizeof(opts.uuid), "size mismatch");
2209 5 : memcpy(opts.nguid, spdk_bdev_get_uuid(ns->bdev), sizeof(opts.nguid));
2210 : }
2211 :
2212 5 : if (spdk_bdev_is_zoned(ns->bdev)) {
2213 0 : SPDK_DEBUGLOG(nvmf, "The added namespace is backed by a zoned block device.\n");
2214 0 : ns->csi = SPDK_NVME_CSI_ZNS;
2215 :
2216 0 : zone_append_supported = spdk_bdev_io_type_supported(ns->bdev,
2217 : SPDK_BDEV_IO_TYPE_ZONE_APPEND);
2218 0 : max_zone_append_size_kib = spdk_bdev_get_max_zone_append_size(ns->bdev) *
2219 0 : spdk_bdev_desc_get_block_size(ns->desc);
2220 :
2221 0 : if (_nvmf_subsystem_get_first_zoned_ns(subsystem) != NULL &&
2222 0 : (nvmf_subsystem_zone_append_supported(subsystem) != zone_append_supported ||
2223 0 : subsystem->max_zone_append_size_kib != max_zone_append_size_kib)) {
2224 0 : SPDK_ERRLOG("Namespaces with different zone append support or different zone append size are not allowed.\n");
2225 0 : goto err;
2226 : }
2227 :
2228 0 : subsystem->max_zone_append_size_kib = max_zone_append_size_kib;
2229 : }
2230 :
2231 5 : first_ns = spdk_nvmf_subsystem_get_first_ns(subsystem);
2232 5 : if (!first_ns) {
2233 4 : if (spdk_bdev_get_nvme_ctratt(ns->bdev).bits.fdps) {
2234 1 : SPDK_DEBUGLOG(nvmf, "Subsystem with id: %u has FDP capability.\n",
2235 : subsystem->id);
2236 1 : subsystem->fdp_supported = true;
2237 : }
2238 : } else {
2239 1 : if (spdk_bdev_get_nvme_ctratt(first_ns->bdev).bits.fdps !=
2240 1 : spdk_bdev_get_nvme_ctratt(ns->bdev).bits.fdps) {
2241 1 : SPDK_ERRLOG("Subsystem with id: %u can%s FDP namespace.\n", subsystem->id,
2242 : spdk_bdev_get_nvme_ctratt(first_ns->bdev).bits.fdps ? " only add" : "not add");
2243 1 : goto err;
2244 : }
2245 : }
2246 :
2247 4 : ns->opts = opts;
2248 4 : ns->subsystem = subsystem;
2249 4 : subsystem->ns[opts.nsid - 1] = ns;
2250 4 : ns->nsid = opts.nsid;
2251 4 : ns->anagrpid = opts.anagrpid;
2252 4 : subsystem->ana_group[ns->anagrpid - 1]++;
2253 4 : TAILQ_INIT(&ns->registrants);
2254 4 : if (ptpl_file) {
2255 0 : ns->ptpl_file = strdup(ptpl_file);
2256 0 : if (!ns->ptpl_file) {
2257 0 : SPDK_ERRLOG("Namespace ns->ptpl_file allocation failed\n");
2258 0 : goto err;
2259 : }
2260 : }
2261 :
2262 4 : if (nvmf_ns_is_ptpl_capable(ns)) {
2263 1 : rc = nvmf_ns_reservation_load(ns, &info);
2264 1 : if (rc) {
2265 0 : SPDK_ERRLOG("Subsystem load reservation failed\n");
2266 0 : goto err;
2267 : }
2268 :
2269 1 : rc = nvmf_ns_reservation_restore(ns, &info);
2270 1 : if (rc) {
2271 0 : SPDK_ERRLOG("Subsystem restore reservation failed\n");
2272 0 : goto err;
2273 : }
2274 : }
2275 :
2276 4 : for (transport = spdk_nvmf_transport_get_first(subsystem->tgt); transport;
2277 0 : transport = spdk_nvmf_transport_get_next(transport)) {
2278 0 : if (transport->ops->subsystem_add_ns) {
2279 0 : rc = transport->ops->subsystem_add_ns(transport, subsystem, ns);
2280 0 : if (rc) {
2281 0 : SPDK_ERRLOG("Namespace attachment is not allowed by %s transport\n", transport->ops->name);
2282 0 : nvmf_ns_reservation_clear_all_registrants(ns);
2283 0 : goto err;
2284 : }
2285 : }
2286 : }
2287 :
2288 : /* JSON value obj is freed before sending the response. Set NULL to prevent usage of dangling pointer. */
2289 4 : ns->opts.transport_specific = NULL;
2290 :
2291 4 : SPDK_DEBUGLOG(nvmf, "Subsystem %s: bdev %s assigned nsid %" PRIu32 "\n",
2292 : spdk_nvmf_subsystem_get_nqn(subsystem),
2293 : bdev_name,
2294 : opts.nsid);
2295 :
2296 4 : nvmf_subsystem_ns_changed(subsystem, opts.nsid);
2297 :
2298 : SPDK_DTRACE_PROBE2(nvmf_subsystem_add_ns, subsystem->subnqn, ns->nsid);
2299 :
2300 4 : return opts.nsid;
2301 1 : err:
2302 1 : subsystem->ns[opts.nsid - 1] = NULL;
2303 1 : spdk_bdev_module_release_bdev(ns->bdev);
2304 1 : spdk_bdev_close(ns->desc);
2305 1 : free(ns->ptpl_file);
2306 1 : free(ns);
2307 :
2308 1 : return 0;
2309 : }
2310 :
2311 : int
2312 0 : spdk_nvmf_subsystem_set_ns_ana_group(struct spdk_nvmf_subsystem *subsystem,
2313 : uint32_t nsid, uint32_t anagrpid)
2314 : {
2315 : struct spdk_nvmf_ns *ns;
2316 :
2317 0 : if (anagrpid > subsystem->max_nsid) {
2318 0 : SPDK_ERRLOG("ANAGRPID greater than maximum NSID not allowed\n");
2319 0 : return -1;
2320 : }
2321 :
2322 0 : if (anagrpid == 0) {
2323 0 : SPDK_ERRLOG("Zero is not allowed to ANAGRPID\n");
2324 0 : return -1;
2325 : }
2326 :
2327 0 : if (nsid == 0 || nsid > subsystem->max_nsid) {
2328 0 : return -1;
2329 : }
2330 :
2331 0 : ns = subsystem->ns[nsid - 1];
2332 0 : if (!ns) {
2333 0 : return -1;
2334 : }
2335 :
2336 0 : assert(ns->anagrpid - 1 < subsystem->max_nsid);
2337 :
2338 0 : assert(subsystem->ana_group[ns->anagrpid - 1] > 0);
2339 :
2340 0 : subsystem->ana_group[ns->anagrpid - 1]--;
2341 :
2342 0 : subsystem->ana_group[anagrpid - 1]++;
2343 :
2344 0 : ns->anagrpid = anagrpid;
2345 0 : ns->opts.anagrpid = anagrpid;
2346 :
2347 0 : nvmf_subsystem_ns_changed(subsystem, nsid);
2348 :
2349 0 : return 0;
2350 : }
2351 :
2352 : static uint32_t
2353 19 : nvmf_subsystem_get_next_allocated_nsid(struct spdk_nvmf_subsystem *subsystem,
2354 : uint32_t prev_nsid)
2355 : {
2356 : uint32_t nsid;
2357 :
2358 19 : if (prev_nsid >= subsystem->max_nsid) {
2359 1 : return 0;
2360 : }
2361 :
2362 4504 : for (nsid = prev_nsid + 1; nsid <= subsystem->max_nsid; nsid++) {
2363 4487 : if (subsystem->ns[nsid - 1]) {
2364 1 : return nsid;
2365 : }
2366 : }
2367 :
2368 17 : return 0;
2369 : }
2370 :
2371 : struct spdk_nvmf_ns *
2372 19 : spdk_nvmf_subsystem_get_first_ns(struct spdk_nvmf_subsystem *subsystem)
2373 : {
2374 : uint32_t first_nsid;
2375 :
2376 19 : first_nsid = nvmf_subsystem_get_next_allocated_nsid(subsystem, 0);
2377 19 : return _nvmf_subsystem_get_ns(subsystem, first_nsid);
2378 : }
2379 :
2380 : struct spdk_nvmf_ns *
2381 0 : spdk_nvmf_subsystem_get_next_ns(struct spdk_nvmf_subsystem *subsystem,
2382 : struct spdk_nvmf_ns *prev_ns)
2383 : {
2384 : uint32_t next_nsid;
2385 :
2386 0 : next_nsid = nvmf_subsystem_get_next_allocated_nsid(subsystem, prev_ns->opts.nsid);
2387 0 : return _nvmf_subsystem_get_ns(subsystem, next_nsid);
2388 : }
2389 :
2390 : struct spdk_nvmf_ns *
2391 0 : spdk_nvmf_subsystem_get_ns(struct spdk_nvmf_subsystem *subsystem, uint32_t nsid)
2392 : {
2393 0 : return _nvmf_subsystem_get_ns(subsystem, nsid);
2394 : }
2395 :
2396 : uint32_t
2397 0 : spdk_nvmf_ns_get_id(const struct spdk_nvmf_ns *ns)
2398 : {
2399 0 : return ns->opts.nsid;
2400 : }
2401 :
2402 : struct spdk_bdev *
2403 0 : spdk_nvmf_ns_get_bdev(struct spdk_nvmf_ns *ns)
2404 : {
2405 0 : return ns->bdev;
2406 : }
2407 :
2408 : void
2409 0 : spdk_nvmf_ns_get_opts(const struct spdk_nvmf_ns *ns, struct spdk_nvmf_ns_opts *opts,
2410 : size_t opts_size)
2411 : {
2412 0 : memset(opts, 0, opts_size);
2413 0 : memcpy(opts, &ns->opts, spdk_min(sizeof(ns->opts), opts_size));
2414 0 : }
2415 :
2416 : const char *
2417 0 : spdk_nvmf_subsystem_get_sn(const struct spdk_nvmf_subsystem *subsystem)
2418 : {
2419 0 : return subsystem->sn;
2420 : }
2421 :
2422 : int
2423 4 : spdk_nvmf_subsystem_set_sn(struct spdk_nvmf_subsystem *subsystem, const char *sn)
2424 : {
2425 : size_t len, max_len;
2426 :
2427 4 : max_len = sizeof(subsystem->sn) - 1;
2428 4 : len = strlen(sn);
2429 4 : if (len > max_len) {
2430 1 : SPDK_DEBUGLOG(nvmf, "Invalid sn \"%s\": length %zu > max %zu\n",
2431 : sn, len, max_len);
2432 1 : return -1;
2433 : }
2434 :
2435 3 : if (!nvmf_valid_ascii_string(sn, len)) {
2436 1 : SPDK_DEBUGLOG(nvmf, "Non-ASCII sn\n");
2437 1 : SPDK_LOGDUMP(nvmf, "sn", sn, len);
2438 1 : return -1;
2439 : }
2440 :
2441 2 : snprintf(subsystem->sn, sizeof(subsystem->sn), "%s", sn);
2442 :
2443 2 : return 0;
2444 : }
2445 :
2446 : const char *
2447 0 : spdk_nvmf_subsystem_get_mn(const struct spdk_nvmf_subsystem *subsystem)
2448 : {
2449 0 : return subsystem->mn;
2450 : }
2451 :
2452 : int
2453 0 : spdk_nvmf_subsystem_set_mn(struct spdk_nvmf_subsystem *subsystem, const char *mn)
2454 : {
2455 : size_t len, max_len;
2456 :
2457 0 : if (mn == NULL) {
2458 0 : mn = MODEL_NUMBER_DEFAULT;
2459 : }
2460 0 : max_len = sizeof(subsystem->mn) - 1;
2461 0 : len = strlen(mn);
2462 0 : if (len > max_len) {
2463 0 : SPDK_DEBUGLOG(nvmf, "Invalid mn \"%s\": length %zu > max %zu\n",
2464 : mn, len, max_len);
2465 0 : return -1;
2466 : }
2467 :
2468 0 : if (!nvmf_valid_ascii_string(mn, len)) {
2469 0 : SPDK_DEBUGLOG(nvmf, "Non-ASCII mn\n");
2470 0 : SPDK_LOGDUMP(nvmf, "mn", mn, len);
2471 0 : return -1;
2472 : }
2473 :
2474 0 : snprintf(subsystem->mn, sizeof(subsystem->mn), "%s", mn);
2475 :
2476 0 : return 0;
2477 : }
2478 :
2479 : const char *
2480 0 : spdk_nvmf_subsystem_get_nqn(const struct spdk_nvmf_subsystem *subsystem)
2481 : {
2482 0 : return subsystem->subnqn;
2483 : }
2484 :
2485 : /* We have to use the typedef in the function declaration to appease astyle. */
2486 : typedef enum spdk_nvmf_subtype spdk_nvmf_subtype_t;
2487 :
2488 : spdk_nvmf_subtype_t
2489 0 : spdk_nvmf_subsystem_get_type(struct spdk_nvmf_subsystem *subsystem)
2490 : {
2491 0 : return subsystem->subtype;
2492 : }
2493 :
2494 : uint32_t
2495 0 : spdk_nvmf_subsystem_get_max_nsid(struct spdk_nvmf_subsystem *subsystem)
2496 : {
2497 0 : return subsystem->max_nsid;
2498 : }
2499 :
2500 : int
2501 0 : spdk_nvmf_subsystem_set_cntlid_range(struct spdk_nvmf_subsystem *subsystem,
2502 : uint16_t min_cntlid, uint16_t max_cntlid)
2503 : {
2504 0 : if (subsystem->state != SPDK_NVMF_SUBSYSTEM_INACTIVE) {
2505 0 : return -EAGAIN;
2506 : }
2507 :
2508 0 : if (min_cntlid > max_cntlid) {
2509 0 : return -EINVAL;
2510 : }
2511 : /* The spec reserves cntlid values in the range FFF0h to FFFFh. */
2512 0 : if (min_cntlid < NVMF_MIN_CNTLID || min_cntlid > NVMF_MAX_CNTLID ||
2513 0 : max_cntlid < NVMF_MIN_CNTLID || max_cntlid > NVMF_MAX_CNTLID) {
2514 0 : return -EINVAL;
2515 : }
2516 0 : subsystem->min_cntlid = min_cntlid;
2517 0 : subsystem->max_cntlid = max_cntlid;
2518 0 : if (subsystem->next_cntlid < min_cntlid || subsystem->next_cntlid > max_cntlid) {
2519 0 : subsystem->next_cntlid = min_cntlid;
2520 : }
2521 :
2522 0 : return 0;
2523 : }
2524 :
2525 : uint16_t
2526 1 : nvmf_subsystem_gen_cntlid(struct spdk_nvmf_subsystem *subsystem)
2527 : {
2528 : int count;
2529 : uint16_t cntlid;
2530 :
2531 : /*
2532 : * In the worst case, we might have to try all CNTLID values between min_cntlid and max_cntlid
2533 : * before we find one that is unused (or find that all values are in use).
2534 : */
2535 1 : for (count = 0; count < subsystem->max_cntlid - subsystem->min_cntlid + 1; count++) {
2536 1 : cntlid = subsystem->next_cntlid;
2537 1 : subsystem->next_cntlid++;
2538 :
2539 1 : if (subsystem->next_cntlid > subsystem->max_cntlid) {
2540 0 : subsystem->next_cntlid = subsystem->min_cntlid;
2541 : }
2542 :
2543 : /* Check if a controller with this cntlid currently exists. */
2544 1 : if (nvmf_subsystem_get_ctrlr(subsystem, cntlid) == NULL) {
2545 : /* Found unused cntlid */
2546 1 : return cntlid;
2547 : }
2548 : }
2549 :
2550 : /* All valid cntlid values are in use. */
2551 0 : return 0xFFFF;
2552 : }
2553 :
2554 : int
2555 1 : nvmf_subsystem_add_ctrlr(struct spdk_nvmf_subsystem *subsystem, struct spdk_nvmf_ctrlr *ctrlr)
2556 : {
2557 :
2558 1 : if (ctrlr->dynamic_ctrlr) {
2559 1 : ctrlr->cntlid = nvmf_subsystem_gen_cntlid(subsystem);
2560 1 : if (ctrlr->cntlid == 0xFFFF) {
2561 : /* Unable to get a cntlid */
2562 0 : SPDK_ERRLOG("Reached max simultaneous ctrlrs\n");
2563 0 : return -EBUSY;
2564 : }
2565 0 : } else if (nvmf_subsystem_get_ctrlr(subsystem, ctrlr->cntlid) != NULL) {
2566 0 : SPDK_ERRLOG("Ctrlr with cntlid %u already exist\n", ctrlr->cntlid);
2567 0 : return -EEXIST;
2568 : }
2569 :
2570 1 : TAILQ_INSERT_TAIL(&subsystem->ctrlrs, ctrlr, link);
2571 :
2572 : SPDK_DTRACE_PROBE3(nvmf_subsystem_add_ctrlr, subsystem->subnqn, ctrlr, ctrlr->hostnqn);
2573 :
2574 1 : return 0;
2575 : }
2576 :
2577 : void
2578 1 : nvmf_subsystem_remove_ctrlr(struct spdk_nvmf_subsystem *subsystem,
2579 : struct spdk_nvmf_ctrlr *ctrlr)
2580 : {
2581 : SPDK_DTRACE_PROBE3(nvmf_subsystem_remove_ctrlr, subsystem->subnqn, ctrlr, ctrlr->hostnqn);
2582 :
2583 1 : assert(spdk_get_thread() == subsystem->thread);
2584 1 : assert(subsystem == ctrlr->subsys);
2585 1 : SPDK_DEBUGLOG(nvmf, "remove ctrlr %p id 0x%x from subsys %p %s\n", ctrlr, ctrlr->cntlid, subsystem,
2586 : subsystem->subnqn);
2587 1 : TAILQ_REMOVE(&subsystem->ctrlrs, ctrlr, link);
2588 1 : }
2589 :
2590 : struct spdk_nvmf_ctrlr *
2591 2 : nvmf_subsystem_get_ctrlr(struct spdk_nvmf_subsystem *subsystem, uint16_t cntlid)
2592 : {
2593 : struct spdk_nvmf_ctrlr *ctrlr;
2594 :
2595 2 : TAILQ_FOREACH(ctrlr, &subsystem->ctrlrs, link) {
2596 1 : if (ctrlr->cntlid == cntlid) {
2597 1 : return ctrlr;
2598 : }
2599 : }
2600 :
2601 1 : return NULL;
2602 : }
2603 :
2604 : uint32_t
2605 0 : spdk_nvmf_subsystem_get_max_namespaces(const struct spdk_nvmf_subsystem *subsystem)
2606 : {
2607 0 : return subsystem->max_nsid;
2608 : }
2609 :
2610 : uint16_t
2611 0 : spdk_nvmf_subsystem_get_min_cntlid(const struct spdk_nvmf_subsystem *subsystem)
2612 : {
2613 0 : return subsystem->min_cntlid;
2614 : }
2615 :
2616 : uint16_t
2617 0 : spdk_nvmf_subsystem_get_max_cntlid(const struct spdk_nvmf_subsystem *subsystem)
2618 : {
2619 0 : return subsystem->max_cntlid;
2620 : }
2621 :
2622 : struct _nvmf_ns_registrant {
2623 : uint64_t rkey;
2624 : char *host_uuid;
2625 : };
2626 :
2627 : struct _nvmf_ns_registrants {
2628 : size_t num_regs;
2629 : struct _nvmf_ns_registrant reg[SPDK_NVMF_MAX_NUM_REGISTRANTS];
2630 : };
2631 :
2632 : struct _nvmf_ns_reservation {
2633 : bool ptpl_activated;
2634 : enum spdk_nvme_reservation_type rtype;
2635 : uint64_t crkey;
2636 : char *bdev_uuid;
2637 : char *holder_uuid;
2638 : struct _nvmf_ns_registrants regs;
2639 : };
2640 :
2641 : static const struct spdk_json_object_decoder nvmf_ns_pr_reg_decoders[] = {
2642 : {"rkey", offsetof(struct _nvmf_ns_registrant, rkey), spdk_json_decode_uint64},
2643 : {"host_uuid", offsetof(struct _nvmf_ns_registrant, host_uuid), spdk_json_decode_string},
2644 : };
2645 :
2646 : static int
2647 4 : nvmf_decode_ns_pr_reg(const struct spdk_json_val *val, void *out)
2648 : {
2649 4 : struct _nvmf_ns_registrant *reg = out;
2650 :
2651 4 : return spdk_json_decode_object(val, nvmf_ns_pr_reg_decoders,
2652 : SPDK_COUNTOF(nvmf_ns_pr_reg_decoders), reg);
2653 : }
2654 :
2655 : static int
2656 4 : nvmf_decode_ns_pr_regs(const struct spdk_json_val *val, void *out)
2657 : {
2658 4 : struct _nvmf_ns_registrants *regs = out;
2659 :
2660 4 : return spdk_json_decode_array(val, nvmf_decode_ns_pr_reg, regs->reg,
2661 : SPDK_NVMF_MAX_NUM_REGISTRANTS, ®s->num_regs,
2662 : sizeof(struct _nvmf_ns_registrant));
2663 : }
2664 :
2665 : static const struct spdk_json_object_decoder nvmf_ns_pr_decoders[] = {
2666 : {"ptpl", offsetof(struct _nvmf_ns_reservation, ptpl_activated), spdk_json_decode_bool, true},
2667 : {"rtype", offsetof(struct _nvmf_ns_reservation, rtype), spdk_json_decode_uint32, true},
2668 : {"crkey", offsetof(struct _nvmf_ns_reservation, crkey), spdk_json_decode_uint64, true},
2669 : {"bdev_uuid", offsetof(struct _nvmf_ns_reservation, bdev_uuid), spdk_json_decode_string},
2670 : {"holder_uuid", offsetof(struct _nvmf_ns_reservation, holder_uuid), spdk_json_decode_string, true},
2671 : {"registrants", offsetof(struct _nvmf_ns_reservation, regs), nvmf_decode_ns_pr_regs},
2672 : };
2673 :
2674 : static int
2675 5 : nvmf_ns_reservation_load_json(const struct spdk_nvmf_ns *ns,
2676 : struct spdk_nvmf_reservation_info *info)
2677 : {
2678 5 : size_t json_size;
2679 : ssize_t values_cnt, rc;
2680 5 : void *json = NULL, *end;
2681 5 : struct spdk_json_val *values = NULL;
2682 5 : struct _nvmf_ns_reservation res = {};
2683 5 : const char *file = ns->ptpl_file;
2684 : uint32_t i;
2685 :
2686 : /* It's not an error if the file does not exist */
2687 5 : if (access(file, F_OK) != 0) {
2688 0 : SPDK_DEBUGLOG(nvmf, "File %s does not exist\n", file);
2689 0 : return 0;
2690 : }
2691 :
2692 : /* Load all persist file contents into a local buffer */
2693 5 : json = spdk_posix_file_load_from_name(file, &json_size);
2694 5 : if (!json) {
2695 0 : SPDK_ERRLOG("Load persist file %s failed\n", file);
2696 0 : return -ENOMEM;
2697 : }
2698 :
2699 5 : rc = spdk_json_parse(json, json_size, NULL, 0, &end, 0);
2700 5 : if (rc < 0) {
2701 1 : SPDK_NOTICELOG("Parsing JSON configuration failed (%zd)\n", rc);
2702 1 : goto exit;
2703 : }
2704 :
2705 4 : values_cnt = rc;
2706 4 : values = calloc(values_cnt, sizeof(struct spdk_json_val));
2707 4 : if (values == NULL) {
2708 0 : goto exit;
2709 : }
2710 :
2711 4 : rc = spdk_json_parse(json, json_size, values, values_cnt, &end, 0);
2712 4 : if (rc != values_cnt) {
2713 0 : SPDK_ERRLOG("Parsing JSON configuration failed (%zd)\n", rc);
2714 0 : goto exit;
2715 : }
2716 :
2717 : /* Decode json */
2718 4 : if (spdk_json_decode_object(values, nvmf_ns_pr_decoders,
2719 : SPDK_COUNTOF(nvmf_ns_pr_decoders),
2720 : &res)) {
2721 0 : SPDK_ERRLOG("Invalid objects in the persist file %s\n", file);
2722 0 : rc = -EINVAL;
2723 0 : goto exit;
2724 : }
2725 :
2726 4 : if (res.regs.num_regs > SPDK_NVMF_MAX_NUM_REGISTRANTS) {
2727 0 : SPDK_ERRLOG("Can only support up to %u registrants\n", SPDK_NVMF_MAX_NUM_REGISTRANTS);
2728 0 : rc = -ERANGE;
2729 0 : goto exit;
2730 : }
2731 :
2732 4 : rc = 0;
2733 4 : info->ptpl_activated = res.ptpl_activated;
2734 4 : info->rtype = res.rtype;
2735 4 : info->crkey = res.crkey;
2736 4 : snprintf(info->bdev_uuid, sizeof(info->bdev_uuid), "%s", res.bdev_uuid);
2737 4 : snprintf(info->holder_uuid, sizeof(info->holder_uuid), "%s", res.holder_uuid);
2738 4 : info->num_regs = res.regs.num_regs;
2739 8 : for (i = 0; i < res.regs.num_regs; i++) {
2740 4 : info->registrants[i].rkey = res.regs.reg[i].rkey;
2741 4 : snprintf(info->registrants[i].host_uuid, sizeof(info->registrants[i].host_uuid), "%s",
2742 4 : res.regs.reg[i].host_uuid);
2743 : }
2744 :
2745 5 : exit:
2746 5 : free(json);
2747 5 : free(values);
2748 5 : free(res.bdev_uuid);
2749 5 : free(res.holder_uuid);
2750 9 : for (i = 0; i < res.regs.num_regs; i++) {
2751 4 : free(res.regs.reg[i].host_uuid);
2752 : }
2753 :
2754 5 : return rc;
2755 : }
2756 :
2757 : static bool nvmf_ns_reservation_all_registrants_type(struct spdk_nvmf_ns *ns);
2758 :
2759 : static int
2760 5 : nvmf_ns_reservation_restore(struct spdk_nvmf_ns *ns, struct spdk_nvmf_reservation_info *info)
2761 : {
2762 : uint32_t i;
2763 5 : struct spdk_nvmf_registrant *reg, *holder = NULL;
2764 5 : struct spdk_uuid bdev_uuid, holder_uuid;
2765 5 : bool rkey_flag = false;
2766 :
2767 5 : SPDK_DEBUGLOG(nvmf, "NSID %u, PTPL %u, Number of registrants %u\n",
2768 : ns->nsid, info->ptpl_activated, info->num_regs);
2769 :
2770 : /* it's not an error */
2771 5 : if (!info->ptpl_activated || !info->num_regs) {
2772 0 : return 0;
2773 : }
2774 :
2775 : /* Check info->crkey exist or not in info->registrants[i].rkey */
2776 14 : for (i = 0; i < info->num_regs; i++) {
2777 9 : if (info->crkey == info->registrants[i].rkey) {
2778 3 : rkey_flag = true;
2779 : }
2780 : }
2781 5 : if (!rkey_flag && info->crkey != 0) {
2782 1 : return -EINVAL;
2783 : }
2784 :
2785 4 : spdk_uuid_parse(&bdev_uuid, info->bdev_uuid);
2786 4 : if (spdk_uuid_compare(&bdev_uuid, spdk_bdev_get_uuid(ns->bdev))) {
2787 1 : SPDK_ERRLOG("Existing bdev UUID is not same with configuration file\n");
2788 1 : return -EINVAL;
2789 : }
2790 :
2791 3 : ns->crkey = info->crkey;
2792 3 : ns->rtype = info->rtype;
2793 3 : ns->ptpl_activated = info->ptpl_activated;
2794 3 : spdk_uuid_parse(&holder_uuid, info->holder_uuid);
2795 :
2796 3 : SPDK_DEBUGLOG(nvmf, "Bdev UUID %s\n", info->bdev_uuid);
2797 3 : if (info->rtype) {
2798 2 : SPDK_DEBUGLOG(nvmf, "Holder UUID %s, RTYPE %u, RKEY 0x%"PRIx64"\n",
2799 : info->holder_uuid, info->rtype, info->crkey);
2800 : }
2801 :
2802 8 : for (i = 0; i < info->num_regs; i++) {
2803 5 : reg = calloc(1, sizeof(*reg));
2804 5 : if (!reg) {
2805 0 : return -ENOMEM;
2806 : }
2807 5 : spdk_uuid_parse(®->hostid, info->registrants[i].host_uuid);
2808 5 : reg->rkey = info->registrants[i].rkey;
2809 5 : TAILQ_INSERT_TAIL(&ns->registrants, reg, link);
2810 5 : if (info->crkey != 0 && !spdk_uuid_compare(&holder_uuid, ®->hostid)) {
2811 2 : holder = reg;
2812 : }
2813 5 : SPDK_DEBUGLOG(nvmf, "Registrant RKEY 0x%"PRIx64", Host UUID %s\n",
2814 : info->registrants[i].rkey, info->registrants[i].host_uuid);
2815 : }
2816 :
2817 3 : if (nvmf_ns_reservation_all_registrants_type(ns)) {
2818 1 : ns->holder = TAILQ_FIRST(&ns->registrants);
2819 : } else {
2820 2 : ns->holder = holder;
2821 : }
2822 :
2823 3 : return 0;
2824 : }
2825 :
2826 : static int
2827 5 : nvmf_ns_json_write_cb(void *cb_ctx, const void *data, size_t size)
2828 : {
2829 5 : char *file = cb_ctx;
2830 : size_t rc;
2831 : FILE *fd;
2832 :
2833 5 : fd = fopen(file, "w");
2834 5 : if (!fd) {
2835 0 : SPDK_ERRLOG("Can't open file %s for write\n", file);
2836 0 : return -ENOENT;
2837 : }
2838 5 : rc = fwrite(data, 1, size, fd);
2839 5 : fclose(fd);
2840 :
2841 5 : return rc == size ? 0 : -1;
2842 : }
2843 :
2844 : static int
2845 5 : nvmf_ns_reservation_update_json(const struct spdk_nvmf_ns *ns,
2846 : const struct spdk_nvmf_reservation_info *info)
2847 : {
2848 5 : const char *file = ns->ptpl_file;
2849 : struct spdk_json_write_ctx *w;
2850 : uint32_t i;
2851 5 : int rc = 0;
2852 :
2853 5 : w = spdk_json_write_begin(nvmf_ns_json_write_cb, (void *)file, 0);
2854 5 : if (w == NULL) {
2855 0 : return -ENOMEM;
2856 : }
2857 : /* clear the configuration file */
2858 5 : if (!info->ptpl_activated) {
2859 1 : goto exit;
2860 : }
2861 :
2862 4 : spdk_json_write_object_begin(w);
2863 4 : spdk_json_write_named_bool(w, "ptpl", info->ptpl_activated);
2864 4 : spdk_json_write_named_uint32(w, "rtype", info->rtype);
2865 4 : spdk_json_write_named_uint64(w, "crkey", info->crkey);
2866 4 : spdk_json_write_named_string(w, "bdev_uuid", info->bdev_uuid);
2867 4 : spdk_json_write_named_string(w, "holder_uuid", info->holder_uuid);
2868 :
2869 4 : spdk_json_write_named_array_begin(w, "registrants");
2870 8 : for (i = 0; i < info->num_regs; i++) {
2871 4 : spdk_json_write_object_begin(w);
2872 4 : spdk_json_write_named_uint64(w, "rkey", info->registrants[i].rkey);
2873 4 : spdk_json_write_named_string(w, "host_uuid", info->registrants[i].host_uuid);
2874 4 : spdk_json_write_object_end(w);
2875 : }
2876 4 : spdk_json_write_array_end(w);
2877 4 : spdk_json_write_object_end(w);
2878 :
2879 5 : exit:
2880 5 : rc = spdk_json_write_end(w);
2881 5 : return rc;
2882 : }
2883 :
2884 : static int
2885 7 : nvmf_ns_update_reservation_info(struct spdk_nvmf_ns *ns)
2886 : {
2887 7 : struct spdk_nvmf_reservation_info info;
2888 : struct spdk_nvmf_registrant *reg, *tmp;
2889 7 : uint32_t i = 0;
2890 :
2891 7 : assert(ns != NULL);
2892 :
2893 7 : if (!ns->bdev || !nvmf_ns_is_ptpl_capable(ns)) {
2894 0 : return 0;
2895 : }
2896 :
2897 7 : memset(&info, 0, sizeof(info));
2898 7 : spdk_uuid_fmt_lower(info.bdev_uuid, sizeof(info.bdev_uuid), spdk_bdev_get_uuid(ns->bdev));
2899 :
2900 7 : if (ns->rtype) {
2901 2 : info.rtype = ns->rtype;
2902 2 : info.crkey = ns->crkey;
2903 2 : if (!nvmf_ns_reservation_all_registrants_type(ns)) {
2904 2 : assert(ns->holder != NULL);
2905 2 : spdk_uuid_fmt_lower(info.holder_uuid, sizeof(info.holder_uuid), &ns->holder->hostid);
2906 : }
2907 : }
2908 :
2909 14 : TAILQ_FOREACH_SAFE(reg, &ns->registrants, link, tmp) {
2910 7 : spdk_uuid_fmt_lower(info.registrants[i].host_uuid, sizeof(info.registrants[i].host_uuid),
2911 7 : ®->hostid);
2912 7 : info.registrants[i++].rkey = reg->rkey;
2913 : }
2914 :
2915 7 : info.num_regs = i;
2916 7 : info.ptpl_activated = ns->ptpl_activated;
2917 :
2918 7 : return nvmf_ns_reservation_update(ns, &info);
2919 : }
2920 :
2921 : static struct spdk_nvmf_registrant *
2922 110 : nvmf_ns_reservation_get_registrant(struct spdk_nvmf_ns *ns,
2923 : struct spdk_uuid *uuid)
2924 : {
2925 : struct spdk_nvmf_registrant *reg, *tmp;
2926 :
2927 191 : TAILQ_FOREACH_SAFE(reg, &ns->registrants, link, tmp) {
2928 151 : if (!spdk_uuid_compare(®->hostid, uuid)) {
2929 70 : return reg;
2930 : }
2931 : }
2932 :
2933 40 : return NULL;
2934 : }
2935 :
2936 : /* Generate reservation notice log to registered HostID controllers */
2937 : static void
2938 10 : nvmf_subsystem_gen_ctrlr_notification(struct spdk_nvmf_subsystem *subsystem,
2939 : struct spdk_nvmf_ns *ns,
2940 : struct spdk_uuid *hostid_list,
2941 : uint32_t num_hostid,
2942 : enum spdk_nvme_reservation_notification_log_page_type type)
2943 : {
2944 : struct spdk_nvmf_ctrlr *ctrlr;
2945 : uint32_t i;
2946 :
2947 25 : for (i = 0; i < num_hostid; i++) {
2948 75 : TAILQ_FOREACH(ctrlr, &subsystem->ctrlrs, link) {
2949 60 : if (!spdk_uuid_compare(&ctrlr->hostid, &hostid_list[i])) {
2950 22 : nvmf_ctrlr_reservation_notice_log(ctrlr, ns, type);
2951 : }
2952 : }
2953 : }
2954 10 : }
2955 :
2956 : /* Get all registrants' hostid other than the controller who issued the command */
2957 : static uint32_t
2958 16 : nvmf_ns_reservation_get_all_other_hostid(struct spdk_nvmf_ns *ns,
2959 : struct spdk_uuid *hostid_list,
2960 : uint32_t max_num_hostid,
2961 : struct spdk_uuid *current_hostid)
2962 : {
2963 : struct spdk_nvmf_registrant *reg, *tmp;
2964 16 : uint32_t num_hostid = 0;
2965 :
2966 55 : TAILQ_FOREACH_SAFE(reg, &ns->registrants, link, tmp) {
2967 39 : if (spdk_uuid_compare(®->hostid, current_hostid)) {
2968 23 : if (num_hostid == max_num_hostid) {
2969 0 : assert(false);
2970 : return max_num_hostid;
2971 : }
2972 23 : hostid_list[num_hostid++] = reg->hostid;
2973 : }
2974 : }
2975 :
2976 16 : return num_hostid;
2977 : }
2978 :
2979 : /* Calculate the unregistered HostID list according to list
2980 : * prior to execute preempt command and list after executing
2981 : * preempt command.
2982 : */
2983 : static uint32_t
2984 3 : nvmf_ns_reservation_get_unregistered_hostid(struct spdk_uuid *old_hostid_list,
2985 : uint32_t old_num_hostid,
2986 : struct spdk_uuid *remaining_hostid_list,
2987 : uint32_t remaining_num_hostid)
2988 : {
2989 3 : struct spdk_uuid temp_hostid_list[SPDK_NVMF_MAX_NUM_REGISTRANTS];
2990 3 : uint32_t i, j, num_hostid = 0;
2991 : bool found;
2992 :
2993 3 : if (!remaining_num_hostid) {
2994 1 : return old_num_hostid;
2995 : }
2996 :
2997 6 : for (i = 0; i < old_num_hostid; i++) {
2998 4 : found = false;
2999 6 : for (j = 0; j < remaining_num_hostid; j++) {
3000 4 : if (!spdk_uuid_compare(&old_hostid_list[i], &remaining_hostid_list[j])) {
3001 2 : found = true;
3002 2 : break;
3003 : }
3004 : }
3005 4 : if (!found) {
3006 2 : spdk_uuid_copy(&temp_hostid_list[num_hostid++], &old_hostid_list[i]);
3007 : }
3008 : }
3009 :
3010 2 : if (num_hostid) {
3011 2 : memcpy(old_hostid_list, temp_hostid_list, sizeof(struct spdk_uuid) * num_hostid);
3012 : }
3013 :
3014 2 : return num_hostid;
3015 : }
3016 :
3017 : /* current reservation type is all registrants or not */
3018 : static bool
3019 54 : nvmf_ns_reservation_all_registrants_type(struct spdk_nvmf_ns *ns)
3020 : {
3021 102 : return (ns->rtype == SPDK_NVME_RESERVE_WRITE_EXCLUSIVE_ALL_REGS ||
3022 48 : ns->rtype == SPDK_NVME_RESERVE_EXCLUSIVE_ACCESS_ALL_REGS);
3023 : }
3024 :
3025 : /* current registrant is reservation holder or not */
3026 : static bool
3027 26 : nvmf_ns_reservation_registrant_is_holder(struct spdk_nvmf_ns *ns,
3028 : struct spdk_nvmf_registrant *reg)
3029 : {
3030 26 : if (!reg) {
3031 0 : return false;
3032 : }
3033 :
3034 26 : if (nvmf_ns_reservation_all_registrants_type(ns)) {
3035 2 : return true;
3036 : }
3037 :
3038 24 : return (ns->holder == reg);
3039 : }
3040 :
3041 : static int
3042 29 : nvmf_ns_reservation_add_registrant(struct spdk_nvmf_ns *ns,
3043 : struct spdk_nvmf_ctrlr *ctrlr,
3044 : uint64_t nrkey)
3045 : {
3046 : struct spdk_nvmf_registrant *reg;
3047 :
3048 29 : reg = calloc(1, sizeof(*reg));
3049 29 : if (!reg) {
3050 0 : return -ENOMEM;
3051 : }
3052 :
3053 29 : reg->rkey = nrkey;
3054 : /* set hostid for the registrant */
3055 29 : spdk_uuid_copy(®->hostid, &ctrlr->hostid);
3056 29 : TAILQ_INSERT_TAIL(&ns->registrants, reg, link);
3057 29 : ns->gen++;
3058 :
3059 29 : return 0;
3060 : }
3061 :
3062 : static void
3063 11 : nvmf_ns_reservation_release_reservation(struct spdk_nvmf_ns *ns)
3064 : {
3065 11 : ns->rtype = 0;
3066 11 : ns->crkey = 0;
3067 11 : ns->holder = NULL;
3068 11 : }
3069 :
3070 : /* release the reservation if the last registrant was removed */
3071 : static void
3072 19 : nvmf_ns_reservation_check_release_on_remove_registrant(struct spdk_nvmf_ns *ns,
3073 : struct spdk_nvmf_registrant *reg)
3074 : {
3075 : struct spdk_nvmf_registrant *next_reg;
3076 :
3077 : /* no reservation holder */
3078 19 : if (!ns->holder) {
3079 7 : assert(ns->rtype == 0);
3080 7 : return;
3081 : }
3082 :
3083 12 : next_reg = TAILQ_FIRST(&ns->registrants);
3084 12 : if (next_reg && nvmf_ns_reservation_all_registrants_type(ns)) {
3085 : /* the next valid registrant is the new holder now */
3086 2 : ns->holder = next_reg;
3087 10 : } else if (nvmf_ns_reservation_registrant_is_holder(ns, reg)) {
3088 : /* release the reservation */
3089 7 : nvmf_ns_reservation_release_reservation(ns);
3090 : }
3091 : }
3092 :
3093 : static void
3094 19 : nvmf_ns_reservation_remove_registrant(struct spdk_nvmf_ns *ns,
3095 : struct spdk_nvmf_registrant *reg)
3096 : {
3097 19 : TAILQ_REMOVE(&ns->registrants, reg, link);
3098 19 : nvmf_ns_reservation_check_release_on_remove_registrant(ns, reg);
3099 19 : free(reg);
3100 19 : ns->gen++;
3101 19 : return;
3102 : }
3103 :
3104 : static uint32_t
3105 0 : nvmf_ns_reservation_remove_registrants_by_key(struct spdk_nvmf_ns *ns,
3106 : uint64_t rkey)
3107 : {
3108 : struct spdk_nvmf_registrant *reg, *tmp;
3109 0 : uint32_t count = 0;
3110 :
3111 0 : TAILQ_FOREACH_SAFE(reg, &ns->registrants, link, tmp) {
3112 0 : if (reg->rkey == rkey) {
3113 0 : nvmf_ns_reservation_remove_registrant(ns, reg);
3114 0 : count++;
3115 : }
3116 : }
3117 0 : return count;
3118 : }
3119 :
3120 : static uint32_t
3121 1 : nvmf_ns_reservation_remove_all_other_registrants(struct spdk_nvmf_ns *ns,
3122 : struct spdk_nvmf_registrant *reg)
3123 : {
3124 : struct spdk_nvmf_registrant *reg_tmp, *reg_tmp2;
3125 1 : uint32_t count = 0;
3126 :
3127 3 : TAILQ_FOREACH_SAFE(reg_tmp, &ns->registrants, link, reg_tmp2) {
3128 2 : if (reg_tmp != reg) {
3129 1 : nvmf_ns_reservation_remove_registrant(ns, reg_tmp);
3130 1 : count++;
3131 : }
3132 : }
3133 1 : return count;
3134 : }
3135 :
3136 : static uint32_t
3137 9 : nvmf_ns_reservation_clear_all_registrants(struct spdk_nvmf_ns *ns)
3138 : {
3139 : struct spdk_nvmf_registrant *reg, *reg_tmp;
3140 9 : uint32_t count = 0;
3141 :
3142 20 : TAILQ_FOREACH_SAFE(reg, &ns->registrants, link, reg_tmp) {
3143 11 : nvmf_ns_reservation_remove_registrant(ns, reg);
3144 11 : count++;
3145 : }
3146 9 : return count;
3147 : }
3148 :
3149 : static void
3150 12 : nvmf_ns_reservation_acquire_reservation(struct spdk_nvmf_ns *ns, uint64_t rkey,
3151 : enum spdk_nvme_reservation_type rtype,
3152 : struct spdk_nvmf_registrant *holder)
3153 : {
3154 12 : ns->rtype = rtype;
3155 12 : ns->crkey = rkey;
3156 12 : assert(ns->holder == NULL);
3157 12 : ns->holder = holder;
3158 12 : }
3159 :
3160 : static bool
3161 45 : nvmf_ns_reservation_register(struct spdk_nvmf_ns *ns,
3162 : struct spdk_nvmf_ctrlr *ctrlr,
3163 : struct spdk_nvmf_request *req)
3164 : {
3165 45 : struct spdk_nvme_reservation_register_data key = { 0 };
3166 45 : struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd;
3167 : uint8_t rrega, iekey, cptpl, rtype;
3168 : struct spdk_nvmf_registrant *reg;
3169 45 : uint8_t status = SPDK_NVME_SC_SUCCESS;
3170 45 : bool update_sgroup = false;
3171 45 : struct spdk_uuid hostid_list[SPDK_NVMF_MAX_NUM_REGISTRANTS];
3172 45 : uint32_t num_hostid = 0;
3173 : int rc;
3174 :
3175 45 : rrega = cmd->cdw10_bits.resv_register.rrega;
3176 45 : iekey = cmd->cdw10_bits.resv_register.iekey;
3177 45 : cptpl = cmd->cdw10_bits.resv_register.cptpl;
3178 :
3179 45 : if (req->iovcnt > 0 && req->length >= sizeof(key)) {
3180 45 : struct spdk_iov_xfer ix;
3181 45 : spdk_iov_xfer_init(&ix, req->iov, req->iovcnt);
3182 45 : spdk_iov_xfer_to_buf(&ix, &key, sizeof(key));
3183 : } else {
3184 0 : SPDK_ERRLOG("No key provided. Failing request.\n");
3185 0 : status = SPDK_NVME_SC_INVALID_FIELD;
3186 0 : goto exit;
3187 : }
3188 :
3189 45 : SPDK_DEBUGLOG(nvmf, "REGISTER: RREGA %u, IEKEY %u, CPTPL %u, "
3190 : "NRKEY 0x%"PRIx64", NRKEY 0x%"PRIx64"\n",
3191 : rrega, iekey, cptpl, key.crkey, key.nrkey);
3192 :
3193 45 : if (cptpl == SPDK_NVME_RESERVE_PTPL_CLEAR_POWER_ON) {
3194 : /* True to OFF state, and need to be updated in the configuration file */
3195 1 : if (ns->ptpl_activated) {
3196 1 : ns->ptpl_activated = 0;
3197 1 : update_sgroup = true;
3198 : }
3199 44 : } else if (cptpl == SPDK_NVME_RESERVE_PTPL_PERSIST_POWER_LOSS) {
3200 4 : if (!nvmf_ns_is_ptpl_capable(ns)) {
3201 1 : status = SPDK_NVME_SC_INVALID_FIELD;
3202 1 : goto exit;
3203 3 : } else if (ns->ptpl_activated == 0) {
3204 3 : ns->ptpl_activated = 1;
3205 3 : update_sgroup = true;
3206 : }
3207 : }
3208 :
3209 : /* current Host Identifier has registrant or not */
3210 44 : reg = nvmf_ns_reservation_get_registrant(ns, &ctrlr->hostid);
3211 :
3212 44 : switch (rrega) {
3213 36 : case SPDK_NVME_RESERVE_REGISTER_KEY:
3214 36 : if (!reg) {
3215 : /* register new controller */
3216 27 : if (key.nrkey == 0) {
3217 0 : SPDK_ERRLOG("Can't register zeroed new key\n");
3218 0 : status = SPDK_NVME_SC_INVALID_FIELD;
3219 0 : goto exit;
3220 : }
3221 27 : rc = nvmf_ns_reservation_add_registrant(ns, ctrlr, key.nrkey);
3222 27 : if (rc < 0) {
3223 0 : status = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR;
3224 0 : goto exit;
3225 : }
3226 27 : update_sgroup = true;
3227 : } else {
3228 : /* register with same key is not an error */
3229 9 : if (reg->rkey != key.nrkey) {
3230 8 : SPDK_ERRLOG("The same host already register a "
3231 : "key with 0x%"PRIx64"\n",
3232 : reg->rkey);
3233 8 : status = SPDK_NVME_SC_RESERVATION_CONFLICT;
3234 8 : goto exit;
3235 : }
3236 : }
3237 28 : break;
3238 4 : case SPDK_NVME_RESERVE_UNREGISTER_KEY:
3239 4 : if (!reg || (!iekey && reg->rkey != key.crkey)) {
3240 0 : SPDK_ERRLOG("No registrant or current key doesn't match "
3241 : "with existing registrant key\n");
3242 0 : status = SPDK_NVME_SC_RESERVATION_CONFLICT;
3243 0 : goto exit;
3244 : }
3245 :
3246 4 : rtype = ns->rtype;
3247 4 : num_hostid = nvmf_ns_reservation_get_all_other_hostid(ns, hostid_list,
3248 : SPDK_NVMF_MAX_NUM_REGISTRANTS,
3249 : &ctrlr->hostid);
3250 :
3251 4 : nvmf_ns_reservation_remove_registrant(ns, reg);
3252 :
3253 4 : if (!ns->rtype && num_hostid && (rtype == SPDK_NVME_RESERVE_WRITE_EXCLUSIVE_REG_ONLY ||
3254 : rtype == SPDK_NVME_RESERVE_EXCLUSIVE_ACCESS_REG_ONLY)) {
3255 1 : nvmf_subsystem_gen_ctrlr_notification(ns->subsystem, ns,
3256 : hostid_list,
3257 : num_hostid,
3258 : SPDK_NVME_RESERVATION_RELEASED);
3259 : }
3260 4 : update_sgroup = true;
3261 4 : break;
3262 4 : case SPDK_NVME_RESERVE_REPLACE_KEY:
3263 4 : if (key.nrkey == 0) {
3264 0 : SPDK_ERRLOG("Can't register zeroed new key\n");
3265 0 : status = SPDK_NVME_SC_INVALID_FIELD;
3266 0 : goto exit;
3267 : }
3268 : /* Registrant exists */
3269 4 : if (reg) {
3270 2 : if (!iekey && reg->rkey != key.crkey) {
3271 0 : SPDK_ERRLOG("Current key doesn't match "
3272 : "existing registrant key\n");
3273 0 : status = SPDK_NVME_SC_RESERVATION_CONFLICT;
3274 0 : goto exit;
3275 : }
3276 2 : if (reg->rkey == key.nrkey) {
3277 0 : goto exit;
3278 : }
3279 2 : reg->rkey = key.nrkey;
3280 2 : } else if (iekey) { /* No registrant but IEKEY is set */
3281 : /* new registrant */
3282 1 : rc = nvmf_ns_reservation_add_registrant(ns, ctrlr, key.nrkey);
3283 1 : if (rc < 0) {
3284 0 : status = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR;
3285 0 : goto exit;
3286 : }
3287 : } else { /* No registrant */
3288 1 : SPDK_ERRLOG("No registrant\n");
3289 1 : status = SPDK_NVME_SC_RESERVATION_CONFLICT;
3290 1 : goto exit;
3291 :
3292 : }
3293 3 : update_sgroup = true;
3294 3 : break;
3295 0 : default:
3296 0 : status = SPDK_NVME_SC_INVALID_FIELD;
3297 0 : goto exit;
3298 : }
3299 :
3300 45 : exit:
3301 45 : req->rsp->nvme_cpl.status.sct = SPDK_NVME_SCT_GENERIC;
3302 45 : req->rsp->nvme_cpl.status.sc = status;
3303 45 : return update_sgroup;
3304 : }
3305 :
3306 : static bool
3307 13 : nvmf_ns_reservation_acquire(struct spdk_nvmf_ns *ns,
3308 : struct spdk_nvmf_ctrlr *ctrlr,
3309 : struct spdk_nvmf_request *req)
3310 : {
3311 13 : struct spdk_nvme_reservation_acquire_data key = { 0 };
3312 13 : struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd;
3313 : uint8_t racqa, iekey, rtype;
3314 : struct spdk_nvmf_registrant *reg;
3315 13 : bool all_regs = false;
3316 13 : uint32_t count = 0;
3317 13 : bool update_sgroup = true;
3318 13 : struct spdk_uuid hostid_list[SPDK_NVMF_MAX_NUM_REGISTRANTS];
3319 13 : uint32_t num_hostid = 0;
3320 13 : struct spdk_uuid new_hostid_list[SPDK_NVMF_MAX_NUM_REGISTRANTS];
3321 13 : uint32_t new_num_hostid = 0;
3322 13 : bool reservation_released = false;
3323 13 : uint8_t status = SPDK_NVME_SC_SUCCESS;
3324 :
3325 13 : racqa = cmd->cdw10_bits.resv_acquire.racqa;
3326 13 : iekey = cmd->cdw10_bits.resv_acquire.iekey;
3327 13 : rtype = cmd->cdw10_bits.resv_acquire.rtype;
3328 :
3329 13 : if (req->iovcnt > 0 && req->length >= sizeof(key)) {
3330 13 : struct spdk_iov_xfer ix;
3331 13 : spdk_iov_xfer_init(&ix, req->iov, req->iovcnt);
3332 13 : spdk_iov_xfer_to_buf(&ix, &key, sizeof(key));
3333 : } else {
3334 0 : SPDK_ERRLOG("No key provided. Failing request.\n");
3335 0 : status = SPDK_NVME_SC_INVALID_FIELD;
3336 0 : goto exit;
3337 : }
3338 :
3339 13 : SPDK_DEBUGLOG(nvmf, "ACQUIRE: RACQA %u, IEKEY %u, RTYPE %u, "
3340 : "NRKEY 0x%"PRIx64", PRKEY 0x%"PRIx64"\n",
3341 : racqa, iekey, rtype, key.crkey, key.prkey);
3342 :
3343 13 : if (iekey || rtype > SPDK_NVME_RESERVE_EXCLUSIVE_ACCESS_ALL_REGS) {
3344 0 : SPDK_ERRLOG("Ignore existing key field set to 1\n");
3345 0 : status = SPDK_NVME_SC_INVALID_FIELD;
3346 0 : update_sgroup = false;
3347 0 : goto exit;
3348 : }
3349 :
3350 13 : reg = nvmf_ns_reservation_get_registrant(ns, &ctrlr->hostid);
3351 : /* must be registrant and CRKEY must match */
3352 13 : if (!reg || reg->rkey != key.crkey) {
3353 0 : SPDK_ERRLOG("No registrant or current key doesn't match "
3354 : "with existing registrant key\n");
3355 0 : status = SPDK_NVME_SC_RESERVATION_CONFLICT;
3356 0 : update_sgroup = false;
3357 0 : goto exit;
3358 : }
3359 :
3360 13 : all_regs = nvmf_ns_reservation_all_registrants_type(ns);
3361 :
3362 13 : switch (racqa) {
3363 10 : case SPDK_NVME_RESERVE_ACQUIRE:
3364 : /* it's not an error for the holder to acquire same reservation type again */
3365 10 : if (nvmf_ns_reservation_registrant_is_holder(ns, reg) && ns->rtype == rtype) {
3366 : /* do nothing */
3367 0 : update_sgroup = false;
3368 10 : } else if (ns->holder == NULL) {
3369 : /* first time to acquire the reservation */
3370 10 : nvmf_ns_reservation_acquire_reservation(ns, key.crkey, rtype, reg);
3371 : } else {
3372 0 : SPDK_ERRLOG("Invalid rtype or current registrant is not holder\n");
3373 0 : status = SPDK_NVME_SC_RESERVATION_CONFLICT;
3374 0 : update_sgroup = false;
3375 0 : goto exit;
3376 : }
3377 10 : break;
3378 3 : case SPDK_NVME_RESERVE_PREEMPT:
3379 : /* no reservation holder */
3380 3 : if (!ns->holder) {
3381 : /* unregister with PRKEY */
3382 0 : nvmf_ns_reservation_remove_registrants_by_key(ns, key.prkey);
3383 0 : break;
3384 : }
3385 3 : num_hostid = nvmf_ns_reservation_get_all_other_hostid(ns, hostid_list,
3386 : SPDK_NVMF_MAX_NUM_REGISTRANTS,
3387 : &ctrlr->hostid);
3388 :
3389 : /* only 1 reservation holder and reservation key is valid */
3390 3 : if (!all_regs) {
3391 : /* preempt itself */
3392 2 : if (nvmf_ns_reservation_registrant_is_holder(ns, reg) &&
3393 0 : ns->crkey == key.prkey) {
3394 0 : ns->rtype = rtype;
3395 0 : reservation_released = true;
3396 0 : break;
3397 : }
3398 :
3399 2 : if (ns->crkey == key.prkey) {
3400 2 : nvmf_ns_reservation_remove_registrant(ns, ns->holder);
3401 2 : nvmf_ns_reservation_acquire_reservation(ns, key.crkey, rtype, reg);
3402 2 : reservation_released = true;
3403 0 : } else if (key.prkey != 0) {
3404 0 : nvmf_ns_reservation_remove_registrants_by_key(ns, key.prkey);
3405 : } else {
3406 : /* PRKEY is zero */
3407 0 : SPDK_ERRLOG("Current PRKEY is zero\n");
3408 0 : status = SPDK_NVME_SC_RESERVATION_CONFLICT;
3409 0 : update_sgroup = false;
3410 0 : goto exit;
3411 : }
3412 : } else {
3413 : /* release all other registrants except for the current one */
3414 1 : if (key.prkey == 0) {
3415 1 : nvmf_ns_reservation_remove_all_other_registrants(ns, reg);
3416 1 : assert(ns->holder == reg);
3417 : } else {
3418 0 : count = nvmf_ns_reservation_remove_registrants_by_key(ns, key.prkey);
3419 0 : if (count == 0) {
3420 0 : SPDK_ERRLOG("PRKEY doesn't match any registrant\n");
3421 0 : status = SPDK_NVME_SC_RESERVATION_CONFLICT;
3422 0 : update_sgroup = false;
3423 0 : goto exit;
3424 : }
3425 : }
3426 : }
3427 3 : break;
3428 0 : default:
3429 0 : status = SPDK_NVME_SC_INVALID_FIELD;
3430 0 : update_sgroup = false;
3431 0 : break;
3432 : }
3433 :
3434 13 : exit:
3435 13 : if (update_sgroup && racqa == SPDK_NVME_RESERVE_PREEMPT) {
3436 3 : new_num_hostid = nvmf_ns_reservation_get_all_other_hostid(ns, new_hostid_list,
3437 : SPDK_NVMF_MAX_NUM_REGISTRANTS,
3438 : &ctrlr->hostid);
3439 : /* Preempt notification occurs on the unregistered controllers
3440 : * other than the controller who issued the command.
3441 : */
3442 3 : num_hostid = nvmf_ns_reservation_get_unregistered_hostid(hostid_list,
3443 : num_hostid,
3444 : new_hostid_list,
3445 : new_num_hostid);
3446 3 : if (num_hostid) {
3447 3 : nvmf_subsystem_gen_ctrlr_notification(ns->subsystem, ns,
3448 : hostid_list,
3449 : num_hostid,
3450 : SPDK_NVME_REGISTRATION_PREEMPTED);
3451 :
3452 : }
3453 : /* Reservation released notification occurs on the
3454 : * controllers which are the remaining registrants other than
3455 : * the controller who issued the command.
3456 : */
3457 3 : if (reservation_released && new_num_hostid) {
3458 2 : nvmf_subsystem_gen_ctrlr_notification(ns->subsystem, ns,
3459 : new_hostid_list,
3460 : new_num_hostid,
3461 : SPDK_NVME_RESERVATION_RELEASED);
3462 :
3463 : }
3464 : }
3465 13 : req->rsp->nvme_cpl.status.sct = SPDK_NVME_SCT_GENERIC;
3466 13 : req->rsp->nvme_cpl.status.sc = status;
3467 13 : return update_sgroup;
3468 : }
3469 :
3470 : static bool
3471 6 : nvmf_ns_reservation_release(struct spdk_nvmf_ns *ns,
3472 : struct spdk_nvmf_ctrlr *ctrlr,
3473 : struct spdk_nvmf_request *req)
3474 : {
3475 6 : struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd;
3476 : uint8_t rrela, iekey, rtype;
3477 : struct spdk_nvmf_registrant *reg;
3478 6 : uint64_t crkey = 0;
3479 6 : uint8_t status = SPDK_NVME_SC_SUCCESS;
3480 6 : bool update_sgroup = true;
3481 6 : struct spdk_uuid hostid_list[SPDK_NVMF_MAX_NUM_REGISTRANTS];
3482 6 : uint32_t num_hostid = 0;
3483 :
3484 6 : rrela = cmd->cdw10_bits.resv_release.rrela;
3485 6 : iekey = cmd->cdw10_bits.resv_release.iekey;
3486 6 : rtype = cmd->cdw10_bits.resv_release.rtype;
3487 :
3488 6 : if (req->iovcnt > 0 && req->length >= sizeof(crkey)) {
3489 6 : struct spdk_iov_xfer ix;
3490 6 : spdk_iov_xfer_init(&ix, req->iov, req->iovcnt);
3491 6 : spdk_iov_xfer_to_buf(&ix, &crkey, sizeof(crkey));
3492 : } else {
3493 0 : SPDK_ERRLOG("No key provided. Failing request.\n");
3494 0 : status = SPDK_NVME_SC_INVALID_FIELD;
3495 0 : goto exit;
3496 : }
3497 :
3498 6 : SPDK_DEBUGLOG(nvmf, "RELEASE: RRELA %u, IEKEY %u, RTYPE %u, "
3499 : "CRKEY 0x%"PRIx64"\n", rrela, iekey, rtype, crkey);
3500 :
3501 6 : if (iekey) {
3502 0 : SPDK_ERRLOG("Ignore existing key field set to 1\n");
3503 0 : status = SPDK_NVME_SC_INVALID_FIELD;
3504 0 : update_sgroup = false;
3505 0 : goto exit;
3506 : }
3507 :
3508 6 : reg = nvmf_ns_reservation_get_registrant(ns, &ctrlr->hostid);
3509 6 : if (!reg || reg->rkey != crkey) {
3510 0 : SPDK_ERRLOG("No registrant or current key doesn't match "
3511 : "with existing registrant key\n");
3512 0 : status = SPDK_NVME_SC_RESERVATION_CONFLICT;
3513 0 : update_sgroup = false;
3514 0 : goto exit;
3515 : }
3516 :
3517 6 : num_hostid = nvmf_ns_reservation_get_all_other_hostid(ns, hostid_list,
3518 : SPDK_NVMF_MAX_NUM_REGISTRANTS,
3519 : &ctrlr->hostid);
3520 :
3521 6 : switch (rrela) {
3522 4 : case SPDK_NVME_RESERVE_RELEASE:
3523 4 : if (!ns->holder) {
3524 0 : SPDK_DEBUGLOG(nvmf, "RELEASE: no holder\n");
3525 0 : update_sgroup = false;
3526 0 : goto exit;
3527 : }
3528 4 : if (ns->rtype != rtype) {
3529 0 : SPDK_ERRLOG("Type doesn't match\n");
3530 0 : status = SPDK_NVME_SC_INVALID_FIELD;
3531 0 : update_sgroup = false;
3532 0 : goto exit;
3533 : }
3534 4 : if (!nvmf_ns_reservation_registrant_is_holder(ns, reg)) {
3535 : /* not the reservation holder, this isn't an error */
3536 0 : update_sgroup = false;
3537 0 : goto exit;
3538 : }
3539 :
3540 4 : rtype = ns->rtype;
3541 4 : nvmf_ns_reservation_release_reservation(ns);
3542 :
3543 4 : if (num_hostid && rtype != SPDK_NVME_RESERVE_WRITE_EXCLUSIVE &&
3544 : rtype != SPDK_NVME_RESERVE_EXCLUSIVE_ACCESS) {
3545 2 : nvmf_subsystem_gen_ctrlr_notification(ns->subsystem, ns,
3546 : hostid_list,
3547 : num_hostid,
3548 : SPDK_NVME_RESERVATION_RELEASED);
3549 : }
3550 4 : break;
3551 2 : case SPDK_NVME_RESERVE_CLEAR:
3552 2 : nvmf_ns_reservation_clear_all_registrants(ns);
3553 2 : if (num_hostid) {
3554 2 : nvmf_subsystem_gen_ctrlr_notification(ns->subsystem, ns,
3555 : hostid_list,
3556 : num_hostid,
3557 : SPDK_NVME_RESERVATION_PREEMPTED);
3558 : }
3559 2 : break;
3560 0 : default:
3561 0 : status = SPDK_NVME_SC_INVALID_FIELD;
3562 0 : update_sgroup = false;
3563 0 : goto exit;
3564 : }
3565 :
3566 6 : exit:
3567 6 : req->rsp->nvme_cpl.status.sct = SPDK_NVME_SCT_GENERIC;
3568 6 : req->rsp->nvme_cpl.status.sc = status;
3569 6 : return update_sgroup;
3570 : }
3571 :
3572 : static void
3573 3 : nvmf_ns_reservation_report(struct spdk_nvmf_ns *ns,
3574 : struct spdk_nvmf_ctrlr *ctrlr,
3575 : struct spdk_nvmf_request *req)
3576 : {
3577 3 : struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd;
3578 : struct spdk_nvmf_registrant *reg, *tmp;
3579 3 : struct spdk_nvme_reservation_status_extended_data status_data = { 0 };
3580 3 : struct spdk_iov_xfer ix;
3581 : uint32_t transfer_len;
3582 3 : uint32_t regctl = 0;
3583 3 : uint8_t status = SPDK_NVME_SC_SUCCESS;
3584 :
3585 3 : if (req->iovcnt == 0) {
3586 0 : SPDK_ERRLOG("No data transfer specified for request. "
3587 : " Unable to transfer back response.\n");
3588 0 : status = SPDK_NVME_SC_INVALID_FIELD;
3589 0 : goto exit;
3590 : }
3591 :
3592 3 : if (!cmd->cdw11_bits.resv_report.eds) {
3593 1 : SPDK_ERRLOG("NVMeoF uses extended controller data structure, "
3594 : "please set EDS bit in cdw11 and try again\n");
3595 1 : status = SPDK_NVME_SC_HOSTID_INCONSISTENT_FORMAT;
3596 1 : goto exit;
3597 : }
3598 :
3599 : /* Number of Dwords of the Reservation Status data structure to transfer */
3600 2 : transfer_len = (cmd->cdw10 + 1) * sizeof(uint32_t);
3601 :
3602 2 : if (transfer_len < sizeof(struct spdk_nvme_reservation_status_extended_data)) {
3603 1 : status = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR;
3604 1 : goto exit;
3605 : }
3606 :
3607 1 : spdk_iov_xfer_init(&ix, req->iov, req->iovcnt);
3608 :
3609 1 : status_data.data.gen = ns->gen;
3610 1 : status_data.data.rtype = ns->rtype;
3611 1 : status_data.data.ptpls = ns->ptpl_activated;
3612 :
3613 3 : TAILQ_FOREACH_SAFE(reg, &ns->registrants, link, tmp) {
3614 2 : regctl++;
3615 : }
3616 :
3617 : /*
3618 : * We report the number of registrants as per the spec here, even if
3619 : * the iov isn't big enough to contain them all. In that case, the
3620 : * spdk_iov_xfer_from_buf() won't actually copy any of the remaining
3621 : * data; as it keeps track of the iov cursor itself, it's simplest to
3622 : * just walk the entire list anyway.
3623 : */
3624 1 : status_data.data.regctl = regctl;
3625 :
3626 1 : spdk_iov_xfer_from_buf(&ix, &status_data, sizeof(status_data));
3627 :
3628 3 : TAILQ_FOREACH_SAFE(reg, &ns->registrants, link, tmp) {
3629 2 : struct spdk_nvme_registered_ctrlr_extended_data ctrlr_data = { 0 };
3630 :
3631 : /* Set to 0xffffh for dynamic controller */
3632 2 : ctrlr_data.cntlid = 0xffff;
3633 2 : ctrlr_data.rcsts.status = (ns->holder == reg) ? true : false;
3634 2 : ctrlr_data.rkey = reg->rkey;
3635 2 : spdk_uuid_copy((struct spdk_uuid *)ctrlr_data.hostid, ®->hostid);
3636 :
3637 2 : spdk_iov_xfer_from_buf(&ix, &ctrlr_data, sizeof(ctrlr_data));
3638 : }
3639 :
3640 3 : exit:
3641 3 : req->rsp->nvme_cpl.status.sct = SPDK_NVME_SCT_GENERIC;
3642 3 : req->rsp->nvme_cpl.status.sc = status;
3643 3 : return;
3644 : }
3645 :
3646 : static void
3647 0 : nvmf_ns_reservation_complete(void *ctx)
3648 : {
3649 0 : struct spdk_nvmf_request *req = ctx;
3650 :
3651 0 : spdk_nvmf_request_complete(req);
3652 0 : }
3653 :
3654 : static void
3655 0 : _nvmf_ns_reservation_update_done(struct spdk_nvmf_subsystem *subsystem,
3656 : void *cb_arg, int status)
3657 : {
3658 0 : struct spdk_nvmf_request *req = (struct spdk_nvmf_request *)cb_arg;
3659 0 : struct spdk_nvmf_poll_group *group = req->qpair->group;
3660 :
3661 0 : spdk_thread_send_msg(group->thread, nvmf_ns_reservation_complete, req);
3662 0 : }
3663 :
3664 : void
3665 0 : nvmf_ns_reservation_request(void *ctx)
3666 : {
3667 0 : struct spdk_nvmf_request *req = (struct spdk_nvmf_request *)ctx;
3668 0 : struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd;
3669 0 : struct spdk_nvmf_ctrlr *ctrlr = req->qpair->ctrlr;
3670 : uint32_t nsid;
3671 : struct spdk_nvmf_ns *ns;
3672 0 : bool update_sgroup = false;
3673 0 : int status = 0;
3674 :
3675 0 : nsid = cmd->nsid;
3676 0 : ns = _nvmf_subsystem_get_ns(ctrlr->subsys, nsid);
3677 0 : assert(ns != NULL);
3678 :
3679 0 : switch (cmd->opc) {
3680 0 : case SPDK_NVME_OPC_RESERVATION_REGISTER:
3681 0 : update_sgroup = nvmf_ns_reservation_register(ns, ctrlr, req);
3682 0 : break;
3683 0 : case SPDK_NVME_OPC_RESERVATION_ACQUIRE:
3684 0 : update_sgroup = nvmf_ns_reservation_acquire(ns, ctrlr, req);
3685 0 : break;
3686 0 : case SPDK_NVME_OPC_RESERVATION_RELEASE:
3687 0 : update_sgroup = nvmf_ns_reservation_release(ns, ctrlr, req);
3688 0 : break;
3689 0 : case SPDK_NVME_OPC_RESERVATION_REPORT:
3690 0 : nvmf_ns_reservation_report(ns, ctrlr, req);
3691 0 : break;
3692 0 : default:
3693 0 : break;
3694 : }
3695 :
3696 : /* update reservation information to subsystem's poll group */
3697 0 : if (update_sgroup) {
3698 0 : if (ns->ptpl_activated || cmd->opc == SPDK_NVME_OPC_RESERVATION_REGISTER) {
3699 0 : if (nvmf_ns_update_reservation_info(ns) != 0) {
3700 0 : req->rsp->nvme_cpl.status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR;
3701 : }
3702 : }
3703 0 : status = nvmf_subsystem_update_ns(ctrlr->subsys, _nvmf_ns_reservation_update_done, req);
3704 0 : if (status == 0) {
3705 0 : return;
3706 : }
3707 : }
3708 :
3709 0 : _nvmf_ns_reservation_update_done(ctrlr->subsys, req, status);
3710 : }
3711 :
3712 : static bool
3713 11 : nvmf_ns_is_ptpl_capable_json(const struct spdk_nvmf_ns *ns)
3714 : {
3715 11 : return ns->ptpl_file != NULL;
3716 : }
3717 :
3718 : static struct spdk_nvmf_ns_reservation_ops g_reservation_ops = {
3719 : .is_ptpl_capable = nvmf_ns_is_ptpl_capable_json,
3720 : .update = nvmf_ns_reservation_update_json,
3721 : .load = nvmf_ns_reservation_load_json,
3722 : };
3723 :
3724 : bool
3725 15 : nvmf_ns_is_ptpl_capable(const struct spdk_nvmf_ns *ns)
3726 : {
3727 15 : return g_reservation_ops.is_ptpl_capable(ns);
3728 : }
3729 :
3730 : static int
3731 7 : nvmf_ns_reservation_update(const struct spdk_nvmf_ns *ns,
3732 : const struct spdk_nvmf_reservation_info *info)
3733 : {
3734 7 : return g_reservation_ops.update(ns, info);
3735 : }
3736 :
3737 : static int
3738 6 : nvmf_ns_reservation_load(const struct spdk_nvmf_ns *ns, struct spdk_nvmf_reservation_info *info)
3739 : {
3740 6 : return g_reservation_ops.load(ns, info);
3741 : }
3742 :
3743 : void
3744 1 : spdk_nvmf_set_custom_ns_reservation_ops(const struct spdk_nvmf_ns_reservation_ops *ops)
3745 : {
3746 1 : g_reservation_ops = *ops;
3747 1 : }
3748 :
3749 : int
3750 0 : spdk_nvmf_subsystem_set_ana_reporting(struct spdk_nvmf_subsystem *subsystem,
3751 : bool ana_reporting)
3752 : {
3753 0 : if (subsystem->state != SPDK_NVMF_SUBSYSTEM_INACTIVE) {
3754 0 : return -EAGAIN;
3755 : }
3756 :
3757 0 : subsystem->flags.ana_reporting = ana_reporting;
3758 :
3759 0 : return 0;
3760 : }
3761 :
3762 : bool
3763 0 : spdk_nvmf_subsystem_get_ana_reporting(struct spdk_nvmf_subsystem *subsystem)
3764 : {
3765 0 : return subsystem->flags.ana_reporting;
3766 : }
3767 :
3768 : struct subsystem_listener_update_ctx {
3769 : struct spdk_nvmf_subsystem_listener *listener;
3770 :
3771 : spdk_nvmf_tgt_subsystem_listen_done_fn cb_fn;
3772 : void *cb_arg;
3773 : };
3774 :
3775 : static void
3776 0 : subsystem_listener_update_done(struct spdk_io_channel_iter *i, int status)
3777 : {
3778 0 : struct subsystem_listener_update_ctx *ctx = spdk_io_channel_iter_get_ctx(i);
3779 :
3780 0 : if (ctx->cb_fn) {
3781 0 : ctx->cb_fn(ctx->cb_arg, status);
3782 : }
3783 0 : free(ctx);
3784 0 : }
3785 :
3786 : static void
3787 0 : subsystem_listener_update_on_pg(struct spdk_io_channel_iter *i)
3788 : {
3789 0 : struct subsystem_listener_update_ctx *ctx = spdk_io_channel_iter_get_ctx(i);
3790 : struct spdk_nvmf_subsystem_listener *listener;
3791 : struct spdk_nvmf_poll_group *group;
3792 : struct spdk_nvmf_ctrlr *ctrlr;
3793 :
3794 0 : listener = ctx->listener;
3795 0 : group = spdk_io_channel_get_ctx(spdk_io_channel_iter_get_channel(i));
3796 :
3797 0 : TAILQ_FOREACH(ctrlr, &listener->subsystem->ctrlrs, link) {
3798 0 : if (ctrlr->thread != spdk_get_thread()) {
3799 0 : continue;
3800 : }
3801 :
3802 0 : if (ctrlr->admin_qpair && ctrlr->admin_qpair->group == group && ctrlr->listener == listener) {
3803 0 : nvmf_ctrlr_async_event_ana_change_notice(ctrlr);
3804 : }
3805 : }
3806 :
3807 0 : spdk_for_each_channel_continue(i, 0);
3808 0 : }
3809 :
3810 : void
3811 0 : spdk_nvmf_subsystem_set_ana_state(struct spdk_nvmf_subsystem *subsystem,
3812 : const struct spdk_nvme_transport_id *trid,
3813 : enum spdk_nvme_ana_state ana_state, uint32_t anagrpid,
3814 : spdk_nvmf_tgt_subsystem_listen_done_fn cb_fn, void *cb_arg)
3815 : {
3816 : struct spdk_nvmf_subsystem_listener *listener;
3817 : struct subsystem_listener_update_ctx *ctx;
3818 : uint32_t i;
3819 :
3820 0 : assert(cb_fn != NULL);
3821 0 : assert(subsystem->state == SPDK_NVMF_SUBSYSTEM_INACTIVE ||
3822 : subsystem->state == SPDK_NVMF_SUBSYSTEM_PAUSED);
3823 :
3824 0 : if (!subsystem->flags.ana_reporting) {
3825 0 : SPDK_ERRLOG("ANA reporting is disabled\n");
3826 0 : cb_fn(cb_arg, -EINVAL);
3827 0 : return;
3828 : }
3829 :
3830 : /* ANA Change state is not used, ANA Persistent Loss state
3831 : * is not supported yet.
3832 : */
3833 0 : if (!(ana_state == SPDK_NVME_ANA_OPTIMIZED_STATE ||
3834 : ana_state == SPDK_NVME_ANA_NON_OPTIMIZED_STATE ||
3835 : ana_state == SPDK_NVME_ANA_INACCESSIBLE_STATE)) {
3836 0 : SPDK_ERRLOG("ANA state %d is not supported\n", ana_state);
3837 0 : cb_fn(cb_arg, -ENOTSUP);
3838 0 : return;
3839 : }
3840 :
3841 0 : if (anagrpid > subsystem->max_nsid) {
3842 0 : SPDK_ERRLOG("ANA group ID %" PRIu32 " is more than maximum\n", anagrpid);
3843 0 : cb_fn(cb_arg, -EINVAL);
3844 0 : return;
3845 : }
3846 :
3847 0 : listener = nvmf_subsystem_find_listener(subsystem, trid);
3848 0 : if (!listener) {
3849 0 : SPDK_ERRLOG("Unable to find listener.\n");
3850 0 : cb_fn(cb_arg, -EINVAL);
3851 0 : return;
3852 : }
3853 :
3854 0 : if (anagrpid != 0 && listener->ana_state[anagrpid - 1] == ana_state) {
3855 0 : cb_fn(cb_arg, 0);
3856 0 : return;
3857 : }
3858 :
3859 0 : ctx = calloc(1, sizeof(*ctx));
3860 0 : if (!ctx) {
3861 0 : SPDK_ERRLOG("Unable to allocate context\n");
3862 0 : cb_fn(cb_arg, -ENOMEM);
3863 0 : return;
3864 : }
3865 :
3866 0 : for (i = 1; i <= subsystem->max_nsid; i++) {
3867 0 : if (anagrpid == 0 || i == anagrpid) {
3868 0 : listener->ana_state[i - 1] = ana_state;
3869 : }
3870 : }
3871 0 : listener->ana_state_change_count++;
3872 :
3873 0 : ctx->listener = listener;
3874 0 : ctx->cb_fn = cb_fn;
3875 0 : ctx->cb_arg = cb_arg;
3876 :
3877 0 : spdk_for_each_channel(subsystem->tgt,
3878 : subsystem_listener_update_on_pg,
3879 : ctx,
3880 : subsystem_listener_update_done);
3881 : }
3882 :
3883 : int
3884 0 : spdk_nvmf_subsystem_get_ana_state(struct spdk_nvmf_subsystem *subsystem,
3885 : const struct spdk_nvme_transport_id *trid,
3886 : uint32_t anagrpid,
3887 : enum spdk_nvme_ana_state *ana_state)
3888 : {
3889 0 : assert(ana_state != NULL);
3890 :
3891 : struct spdk_nvmf_subsystem_listener *listener;
3892 :
3893 0 : if (!subsystem->flags.ana_reporting) {
3894 0 : SPDK_ERRLOG("ANA reporting is disabled\n");
3895 0 : return -EINVAL;
3896 : }
3897 :
3898 0 : if (anagrpid <= 0 || anagrpid > subsystem->max_nsid) {
3899 0 : SPDK_ERRLOG("ANA group ID %" PRIu32 " is invalid\n", anagrpid);
3900 0 : return -EINVAL;
3901 : }
3902 :
3903 0 : listener = nvmf_subsystem_find_listener(subsystem, trid);
3904 0 : if (!listener) {
3905 0 : SPDK_ERRLOG("Unable to find listener.\n");
3906 0 : return -EINVAL;
3907 : }
3908 :
3909 0 : *ana_state = listener->ana_state[anagrpid - 1];
3910 0 : return 0;
3911 : }
3912 :
3913 : bool
3914 14 : spdk_nvmf_subsystem_is_discovery(struct spdk_nvmf_subsystem *subsystem)
3915 : {
3916 28 : return subsystem->subtype == SPDK_NVMF_SUBTYPE_DISCOVERY_CURRENT ||
3917 14 : subsystem->subtype == SPDK_NVMF_SUBTYPE_DISCOVERY;
3918 : }
3919 :
3920 : bool
3921 0 : nvmf_nqn_is_discovery(const char *nqn)
3922 : {
3923 0 : return strcmp(nqn, SPDK_NVMF_DISCOVERY_NQN) == 0;
3924 : }
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