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 : pthread_mutex_lock(&subsystem->mutex);
1248 0 : subsystem->allow_any_host = allow_any_host;
1249 0 : if (!TAILQ_EMPTY(&subsystem->listeners)) {
1250 0 : spdk_nvmf_send_discovery_log_notice(subsystem->tgt, NULL);
1251 : }
1252 0 : pthread_mutex_unlock(&subsystem->mutex);
1253 :
1254 0 : return 0;
1255 : }
1256 :
1257 : bool
1258 0 : spdk_nvmf_subsystem_get_allow_any_host(const struct spdk_nvmf_subsystem *subsystem)
1259 : {
1260 : bool allow_any_host;
1261 : struct spdk_nvmf_subsystem *sub;
1262 :
1263 : /* Technically, taking the mutex modifies data in the subsystem. But the const
1264 : * is still important to convey that this doesn't mutate any other data. Cast
1265 : * it away to work around this. */
1266 0 : sub = (struct spdk_nvmf_subsystem *)subsystem;
1267 :
1268 0 : pthread_mutex_lock(&sub->mutex);
1269 0 : allow_any_host = sub->allow_any_host;
1270 0 : pthread_mutex_unlock(&sub->mutex);
1271 :
1272 0 : return allow_any_host;
1273 : }
1274 :
1275 : bool
1276 31 : spdk_nvmf_subsystem_host_allowed(struct spdk_nvmf_subsystem *subsystem, const char *hostnqn)
1277 : {
1278 : bool allowed;
1279 :
1280 31 : if (!hostnqn) {
1281 0 : return false;
1282 : }
1283 :
1284 31 : pthread_mutex_lock(&subsystem->mutex);
1285 :
1286 31 : if (subsystem->allow_any_host) {
1287 25 : pthread_mutex_unlock(&subsystem->mutex);
1288 25 : return true;
1289 : }
1290 :
1291 6 : allowed = nvmf_subsystem_find_host(subsystem, hostnqn) != NULL;
1292 6 : pthread_mutex_unlock(&subsystem->mutex);
1293 :
1294 6 : return allowed;
1295 : }
1296 :
1297 : bool
1298 0 : nvmf_subsystem_host_auth_required(struct spdk_nvmf_subsystem *subsystem, const char *hostnqn)
1299 : {
1300 : struct spdk_nvmf_host *host;
1301 : bool status;
1302 :
1303 0 : pthread_mutex_lock(&subsystem->mutex);
1304 0 : host = nvmf_subsystem_find_host(subsystem, hostnqn);
1305 0 : status = host != NULL && host->dhchap_key != NULL;
1306 0 : pthread_mutex_unlock(&subsystem->mutex);
1307 :
1308 0 : return status;
1309 : }
1310 :
1311 : struct spdk_key *
1312 0 : nvmf_subsystem_get_dhchap_key(struct spdk_nvmf_subsystem *subsystem, const char *hostnqn,
1313 : enum nvmf_auth_key_type type)
1314 : {
1315 : struct spdk_nvmf_host *host;
1316 0 : struct spdk_key *key = NULL;
1317 :
1318 0 : pthread_mutex_lock(&subsystem->mutex);
1319 0 : host = nvmf_subsystem_find_host(subsystem, hostnqn);
1320 0 : if (host != NULL) {
1321 0 : switch (type) {
1322 0 : case NVMF_AUTH_KEY_HOST:
1323 0 : key = host->dhchap_key;
1324 0 : break;
1325 0 : case NVMF_AUTH_KEY_CTRLR:
1326 0 : key = host->dhchap_ctrlr_key;
1327 0 : break;
1328 : }
1329 0 : if (key != NULL) {
1330 0 : key = spdk_key_dup(key);
1331 : }
1332 : }
1333 0 : pthread_mutex_unlock(&subsystem->mutex);
1334 :
1335 0 : return key;
1336 : }
1337 :
1338 : struct spdk_nvmf_host *
1339 0 : spdk_nvmf_subsystem_get_first_host(struct spdk_nvmf_subsystem *subsystem)
1340 : {
1341 0 : return TAILQ_FIRST(&subsystem->hosts);
1342 : }
1343 :
1344 :
1345 : struct spdk_nvmf_host *
1346 0 : spdk_nvmf_subsystem_get_next_host(struct spdk_nvmf_subsystem *subsystem,
1347 : struct spdk_nvmf_host *prev_host)
1348 : {
1349 0 : return TAILQ_NEXT(prev_host, link);
1350 : }
1351 :
1352 : const char *
1353 0 : spdk_nvmf_host_get_nqn(const struct spdk_nvmf_host *host)
1354 : {
1355 0 : return host->nqn;
1356 : }
1357 :
1358 : struct spdk_nvmf_subsystem_listener *
1359 7 : nvmf_subsystem_find_listener(struct spdk_nvmf_subsystem *subsystem,
1360 : const struct spdk_nvme_transport_id *trid)
1361 : {
1362 : struct spdk_nvmf_subsystem_listener *listener;
1363 :
1364 22 : TAILQ_FOREACH(listener, &subsystem->listeners, link) {
1365 15 : if (spdk_nvme_transport_id_compare(listener->trid, trid) == 0) {
1366 0 : return listener;
1367 : }
1368 : }
1369 :
1370 7 : return NULL;
1371 : }
1372 :
1373 : /**
1374 : * Function to be called once the target is listening.
1375 : *
1376 : * \param ctx Context argument passed to this function.
1377 : * \param status 0 if it completed successfully, or negative errno if it failed.
1378 : */
1379 : static void
1380 7 : _nvmf_subsystem_add_listener_done(void *ctx, int status)
1381 : {
1382 7 : struct spdk_nvmf_subsystem_listener *listener = ctx;
1383 :
1384 7 : if (status) {
1385 0 : listener->cb_fn(listener->cb_arg, status);
1386 0 : free(listener);
1387 0 : return;
1388 : }
1389 :
1390 7 : TAILQ_INSERT_HEAD(&listener->subsystem->listeners, listener, link);
1391 :
1392 7 : if (spdk_nvmf_subsystem_is_discovery(listener->subsystem)) {
1393 0 : status = nvmf_tgt_update_mdns_prr(listener->subsystem->tgt);
1394 0 : if (status) {
1395 0 : TAILQ_REMOVE(&listener->subsystem->listeners, listener, link);
1396 0 : listener->cb_fn(listener->cb_arg, status);
1397 0 : free(listener);
1398 0 : return;
1399 : }
1400 : }
1401 :
1402 7 : spdk_nvmf_send_discovery_log_notice(listener->subsystem->tgt, NULL);
1403 7 : listener->cb_fn(listener->cb_arg, status);
1404 : }
1405 :
1406 : void
1407 7 : spdk_nvmf_subsystem_listener_opts_init(struct spdk_nvmf_listener_opts *opts, size_t size)
1408 : {
1409 7 : if (opts == NULL) {
1410 0 : SPDK_ERRLOG("opts should not be NULL\n");
1411 0 : assert(false);
1412 : return;
1413 : }
1414 7 : if (size == 0) {
1415 0 : SPDK_ERRLOG("size should not be zero\n");
1416 0 : assert(false);
1417 : return;
1418 : }
1419 :
1420 7 : memset(opts, 0, size);
1421 7 : opts->opts_size = size;
1422 :
1423 : #define FIELD_OK(field) \
1424 : offsetof(struct spdk_nvmf_listener_opts, field) + sizeof(opts->field) <= size
1425 :
1426 : #define SET_FIELD(field, value) \
1427 : if (FIELD_OK(field)) { \
1428 : opts->field = value; \
1429 : } \
1430 :
1431 7 : SET_FIELD(secure_channel, false);
1432 7 : SET_FIELD(ana_state, SPDK_NVME_ANA_OPTIMIZED_STATE);
1433 7 : SET_FIELD(sock_impl, NULL);
1434 :
1435 : #undef FIELD_OK
1436 : #undef SET_FIELD
1437 : }
1438 :
1439 : static int
1440 0 : listener_opts_copy(struct spdk_nvmf_listener_opts *src, struct spdk_nvmf_listener_opts *dst)
1441 : {
1442 0 : if (src->opts_size == 0) {
1443 0 : SPDK_ERRLOG("source structure size should not be zero\n");
1444 0 : assert(false);
1445 : return -EINVAL;
1446 : }
1447 :
1448 0 : memset(dst, 0, sizeof(*dst));
1449 0 : dst->opts_size = src->opts_size;
1450 :
1451 : #define FIELD_OK(field) \
1452 : offsetof(struct spdk_nvmf_listener_opts, field) + sizeof(src->field) <= src->opts_size
1453 :
1454 : #define SET_FIELD(field) \
1455 : if (FIELD_OK(field)) { \
1456 : dst->field = src->field; \
1457 : } \
1458 :
1459 0 : SET_FIELD(secure_channel);
1460 0 : SET_FIELD(ana_state);
1461 0 : SET_FIELD(sock_impl);
1462 : /* We should not remove this statement, but need to update the assert statement
1463 : * if we add a new field, and also add a corresponding SET_FIELD statement. */
1464 : SPDK_STATIC_ASSERT(sizeof(struct spdk_nvmf_listener_opts) == 24, "Incorrect size");
1465 :
1466 : #undef SET_FIELD
1467 : #undef FIELD_OK
1468 :
1469 0 : return 0;
1470 : }
1471 :
1472 : static void
1473 7 : _nvmf_subsystem_add_listener(struct spdk_nvmf_subsystem *subsystem,
1474 : struct spdk_nvme_transport_id *trid,
1475 : spdk_nvmf_tgt_subsystem_listen_done_fn cb_fn,
1476 : void *cb_arg, struct spdk_nvmf_listener_opts *opts)
1477 : {
1478 : struct spdk_nvmf_transport *transport;
1479 : struct spdk_nvmf_subsystem_listener *listener;
1480 : struct spdk_nvmf_listener *tr_listener;
1481 : uint32_t i;
1482 : uint32_t id;
1483 7 : int rc = 0;
1484 :
1485 7 : assert(cb_fn != NULL);
1486 :
1487 7 : if (!(subsystem->state == SPDK_NVMF_SUBSYSTEM_INACTIVE ||
1488 0 : subsystem->state == SPDK_NVMF_SUBSYSTEM_PAUSED)) {
1489 0 : cb_fn(cb_arg, -EAGAIN);
1490 0 : return;
1491 : }
1492 :
1493 7 : if (nvmf_subsystem_find_listener(subsystem, trid)) {
1494 : /* Listener already exists in this subsystem */
1495 0 : cb_fn(cb_arg, 0);
1496 0 : return;
1497 : }
1498 :
1499 7 : transport = spdk_nvmf_tgt_get_transport(subsystem->tgt, trid->trstring);
1500 7 : if (!transport) {
1501 0 : SPDK_ERRLOG("Unable to find %s transport. The transport must be created first also make sure it is properly registered.\n",
1502 : trid->trstring);
1503 0 : cb_fn(cb_arg, -EINVAL);
1504 0 : return;
1505 : }
1506 :
1507 7 : tr_listener = nvmf_transport_find_listener(transport, trid);
1508 7 : if (!tr_listener) {
1509 0 : SPDK_ERRLOG("Cannot find transport listener for %s\n", trid->traddr);
1510 0 : cb_fn(cb_arg, -EINVAL);
1511 0 : return;
1512 : }
1513 :
1514 7 : listener = calloc(1, sizeof(*listener));
1515 7 : if (!listener) {
1516 0 : cb_fn(cb_arg, -ENOMEM);
1517 0 : return;
1518 : }
1519 :
1520 7 : listener->trid = &tr_listener->trid;
1521 7 : listener->transport = transport;
1522 7 : listener->cb_fn = cb_fn;
1523 7 : listener->cb_arg = cb_arg;
1524 7 : listener->subsystem = subsystem;
1525 7 : listener->ana_state = calloc(subsystem->max_nsid, sizeof(enum spdk_nvme_ana_state));
1526 7 : if (!listener->ana_state) {
1527 0 : free(listener);
1528 0 : cb_fn(cb_arg, -ENOMEM);
1529 0 : return;
1530 : }
1531 :
1532 7 : spdk_nvmf_subsystem_listener_opts_init(&listener->opts, sizeof(listener->opts));
1533 7 : if (opts != NULL) {
1534 0 : rc = listener_opts_copy(opts, &listener->opts);
1535 0 : if (rc) {
1536 0 : SPDK_ERRLOG("Unable to copy listener options\n");
1537 0 : free(listener->ana_state);
1538 0 : free(listener);
1539 0 : cb_fn(cb_arg, -EINVAL);
1540 0 : return;
1541 : }
1542 : }
1543 :
1544 7 : id = spdk_bit_array_find_first_clear(subsystem->used_listener_ids, 0);
1545 7 : if (id == UINT32_MAX) {
1546 0 : SPDK_ERRLOG("Cannot add any more listeners\n");
1547 0 : free(listener->ana_state);
1548 0 : free(listener->opts.sock_impl);
1549 0 : free(listener);
1550 0 : cb_fn(cb_arg, -EINVAL);
1551 0 : return;
1552 : }
1553 :
1554 7 : spdk_bit_array_set(subsystem->used_listener_ids, id);
1555 7 : listener->id = id;
1556 :
1557 231 : for (i = 0; i < subsystem->max_nsid; i++) {
1558 224 : listener->ana_state[i] = listener->opts.ana_state;
1559 : }
1560 :
1561 7 : if (transport->ops->listen_associate != NULL) {
1562 0 : rc = transport->ops->listen_associate(transport, subsystem, trid);
1563 : }
1564 :
1565 : SPDK_DTRACE_PROBE4(nvmf_subsystem_add_listener, subsystem->subnqn, listener->trid->trtype,
1566 : listener->trid->traddr, listener->trid->trsvcid);
1567 :
1568 7 : _nvmf_subsystem_add_listener_done(listener, rc);
1569 : }
1570 :
1571 : void
1572 7 : spdk_nvmf_subsystem_add_listener(struct spdk_nvmf_subsystem *subsystem,
1573 : struct spdk_nvme_transport_id *trid,
1574 : spdk_nvmf_tgt_subsystem_listen_done_fn cb_fn,
1575 : void *cb_arg)
1576 : {
1577 7 : _nvmf_subsystem_add_listener(subsystem, trid, cb_fn, cb_arg, NULL);
1578 7 : }
1579 :
1580 : void
1581 0 : spdk_nvmf_subsystem_add_listener_ext(struct spdk_nvmf_subsystem *subsystem,
1582 : struct spdk_nvme_transport_id *trid,
1583 : spdk_nvmf_tgt_subsystem_listen_done_fn cb_fn,
1584 : void *cb_arg, struct spdk_nvmf_listener_opts *opts)
1585 : {
1586 0 : _nvmf_subsystem_add_listener(subsystem, trid, cb_fn, cb_arg, opts);
1587 0 : }
1588 :
1589 : int
1590 0 : spdk_nvmf_subsystem_remove_listener(struct spdk_nvmf_subsystem *subsystem,
1591 : const struct spdk_nvme_transport_id *trid)
1592 : {
1593 : struct spdk_nvmf_subsystem_listener *listener;
1594 :
1595 0 : if (!(subsystem->state == SPDK_NVMF_SUBSYSTEM_INACTIVE ||
1596 0 : subsystem->state == SPDK_NVMF_SUBSYSTEM_PAUSED)) {
1597 0 : return -EAGAIN;
1598 : }
1599 :
1600 0 : listener = nvmf_subsystem_find_listener(subsystem, trid);
1601 0 : if (listener == NULL) {
1602 0 : return -ENOENT;
1603 : }
1604 :
1605 : SPDK_DTRACE_PROBE4(nvmf_subsystem_remove_listener, subsystem->subnqn, listener->trid->trtype,
1606 : listener->trid->traddr, listener->trid->trsvcid);
1607 :
1608 0 : _nvmf_subsystem_remove_listener(subsystem, listener, false);
1609 :
1610 0 : return 0;
1611 : }
1612 :
1613 : void
1614 13 : nvmf_subsystem_remove_all_listeners(struct spdk_nvmf_subsystem *subsystem,
1615 : bool stop)
1616 : {
1617 : struct spdk_nvmf_subsystem_listener *listener, *listener_tmp;
1618 :
1619 20 : TAILQ_FOREACH_SAFE(listener, &subsystem->listeners, link, listener_tmp) {
1620 7 : _nvmf_subsystem_remove_listener(subsystem, listener, stop);
1621 : }
1622 13 : }
1623 :
1624 : bool
1625 0 : spdk_nvmf_subsystem_listener_allowed(struct spdk_nvmf_subsystem *subsystem,
1626 : const struct spdk_nvme_transport_id *trid)
1627 : {
1628 : struct spdk_nvmf_subsystem_listener *listener;
1629 :
1630 0 : TAILQ_FOREACH(listener, &subsystem->listeners, link) {
1631 0 : if (spdk_nvme_transport_id_compare(listener->trid, trid) == 0) {
1632 0 : return true;
1633 : }
1634 : }
1635 :
1636 0 : if (!strcmp(subsystem->subnqn, SPDK_NVMF_DISCOVERY_NQN)) {
1637 0 : SPDK_WARNLOG("Allowing connection to discovery subsystem on %s/%s/%s, "
1638 : "even though this listener was not added to the discovery "
1639 : "subsystem. This behavior is deprecated and will be removed "
1640 : "in a future release.\n",
1641 : spdk_nvme_transport_id_trtype_str(trid->trtype), trid->traddr, trid->trsvcid);
1642 0 : return true;
1643 : }
1644 :
1645 0 : return false;
1646 : }
1647 :
1648 : struct spdk_nvmf_subsystem_listener *
1649 30 : spdk_nvmf_subsystem_get_first_listener(struct spdk_nvmf_subsystem *subsystem)
1650 : {
1651 30 : return TAILQ_FIRST(&subsystem->listeners);
1652 : }
1653 :
1654 : struct spdk_nvmf_subsystem_listener *
1655 155 : spdk_nvmf_subsystem_get_next_listener(struct spdk_nvmf_subsystem *subsystem,
1656 : struct spdk_nvmf_subsystem_listener *prev_listener)
1657 : {
1658 155 : return TAILQ_NEXT(prev_listener, link);
1659 : }
1660 :
1661 : const struct spdk_nvme_transport_id *
1662 0 : spdk_nvmf_subsystem_listener_get_trid(struct spdk_nvmf_subsystem_listener *listener)
1663 : {
1664 0 : return listener->trid;
1665 : }
1666 :
1667 : void
1668 0 : spdk_nvmf_subsystem_allow_any_listener(struct spdk_nvmf_subsystem *subsystem,
1669 : bool allow_any_listener)
1670 : {
1671 0 : subsystem->flags.allow_any_listener = allow_any_listener;
1672 0 : }
1673 :
1674 : bool
1675 0 : spdk_nvmf_subsystem_any_listener_allowed(struct spdk_nvmf_subsystem *subsystem)
1676 : {
1677 0 : return subsystem->flags.allow_any_listener;
1678 : }
1679 :
1680 : struct subsystem_update_ns_ctx {
1681 : struct spdk_nvmf_subsystem *subsystem;
1682 :
1683 : spdk_nvmf_subsystem_state_change_done cb_fn;
1684 : void *cb_arg;
1685 : };
1686 :
1687 : static void
1688 0 : subsystem_update_ns_done(struct spdk_io_channel_iter *i, int status)
1689 : {
1690 0 : struct subsystem_update_ns_ctx *ctx = spdk_io_channel_iter_get_ctx(i);
1691 :
1692 0 : if (ctx->cb_fn) {
1693 0 : ctx->cb_fn(ctx->subsystem, ctx->cb_arg, status);
1694 : }
1695 0 : free(ctx);
1696 0 : }
1697 :
1698 : static void
1699 0 : subsystem_update_ns_on_pg(struct spdk_io_channel_iter *i)
1700 : {
1701 : int rc;
1702 : struct subsystem_update_ns_ctx *ctx;
1703 : struct spdk_nvmf_poll_group *group;
1704 : struct spdk_nvmf_subsystem *subsystem;
1705 :
1706 0 : ctx = spdk_io_channel_iter_get_ctx(i);
1707 0 : group = spdk_io_channel_get_ctx(spdk_io_channel_iter_get_channel(i));
1708 0 : subsystem = ctx->subsystem;
1709 :
1710 0 : rc = nvmf_poll_group_update_subsystem(group, subsystem);
1711 0 : spdk_for_each_channel_continue(i, rc);
1712 0 : }
1713 :
1714 : static int
1715 0 : nvmf_subsystem_update_ns(struct spdk_nvmf_subsystem *subsystem,
1716 : spdk_nvmf_subsystem_state_change_done cb_fn, void *cb_arg)
1717 : {
1718 : struct subsystem_update_ns_ctx *ctx;
1719 :
1720 0 : ctx = calloc(1, sizeof(*ctx));
1721 0 : if (ctx == NULL) {
1722 0 : SPDK_ERRLOG("Can't alloc subsystem poll group update context\n");
1723 0 : return -ENOMEM;
1724 : }
1725 0 : ctx->subsystem = subsystem;
1726 0 : ctx->cb_fn = cb_fn;
1727 0 : ctx->cb_arg = cb_arg;
1728 :
1729 0 : spdk_for_each_channel(subsystem->tgt,
1730 : subsystem_update_ns_on_pg,
1731 : ctx,
1732 : subsystem_update_ns_done);
1733 0 : return 0;
1734 : }
1735 :
1736 : static void
1737 10 : nvmf_subsystem_ns_changed(struct spdk_nvmf_subsystem *subsystem, uint32_t nsid)
1738 : {
1739 : struct spdk_nvmf_ctrlr *ctrlr;
1740 :
1741 14 : TAILQ_FOREACH(ctrlr, &subsystem->ctrlrs, link) {
1742 4 : if (nvmf_ctrlr_ns_is_visible(ctrlr, nsid)) {
1743 3 : nvmf_ctrlr_ns_changed(ctrlr, nsid);
1744 : }
1745 : }
1746 10 : }
1747 :
1748 : static uint32_t nvmf_ns_reservation_clear_all_registrants(struct spdk_nvmf_ns *ns);
1749 :
1750 : int
1751 5 : spdk_nvmf_subsystem_remove_ns(struct spdk_nvmf_subsystem *subsystem, uint32_t nsid)
1752 : {
1753 : struct spdk_nvmf_transport *transport;
1754 : struct spdk_nvmf_ns *ns;
1755 : struct spdk_nvmf_host *host, *tmp;
1756 : struct spdk_nvmf_ctrlr *ctrlr;
1757 :
1758 5 : if (!(subsystem->state == SPDK_NVMF_SUBSYSTEM_INACTIVE ||
1759 1 : subsystem->state == SPDK_NVMF_SUBSYSTEM_PAUSED)) {
1760 0 : assert(false);
1761 : return -1;
1762 : }
1763 :
1764 5 : if (nsid == 0 || nsid > subsystem->max_nsid) {
1765 0 : return -1;
1766 : }
1767 :
1768 5 : ns = subsystem->ns[nsid - 1];
1769 5 : if (!ns) {
1770 0 : return -1;
1771 : }
1772 :
1773 5 : subsystem->ns[nsid - 1] = NULL;
1774 :
1775 5 : assert(ns->anagrpid - 1 < subsystem->max_nsid);
1776 5 : assert(subsystem->ana_group[ns->anagrpid - 1] > 0);
1777 :
1778 5 : subsystem->ana_group[ns->anagrpid - 1]--;
1779 :
1780 6 : TAILQ_FOREACH_SAFE(host, &ns->hosts, link, tmp) {
1781 1 : nvmf_ns_remove_host(ns, host);
1782 : }
1783 :
1784 5 : free(ns->ptpl_file);
1785 5 : nvmf_ns_reservation_clear_all_registrants(ns);
1786 5 : spdk_bdev_module_release_bdev(ns->bdev);
1787 5 : spdk_bdev_close(ns->desc);
1788 5 : free(ns);
1789 :
1790 5 : if (subsystem->fdp_supported && !spdk_nvmf_subsystem_get_first_ns(subsystem)) {
1791 1 : subsystem->fdp_supported = false;
1792 1 : SPDK_DEBUGLOG(nvmf, "Subsystem with id: %u doesn't have FDP capability.\n",
1793 : subsystem->id);
1794 : }
1795 :
1796 5 : for (transport = spdk_nvmf_transport_get_first(subsystem->tgt); transport;
1797 0 : transport = spdk_nvmf_transport_get_next(transport)) {
1798 0 : if (transport->ops->subsystem_remove_ns) {
1799 0 : transport->ops->subsystem_remove_ns(transport, subsystem, nsid);
1800 : }
1801 : }
1802 :
1803 5 : nvmf_subsystem_ns_changed(subsystem, nsid);
1804 :
1805 8 : TAILQ_FOREACH(ctrlr, &subsystem->ctrlrs, link) {
1806 3 : nvmf_ctrlr_ns_set_visible(ctrlr, nsid, false);
1807 : }
1808 :
1809 5 : return 0;
1810 : }
1811 :
1812 : struct subsystem_ns_change_ctx {
1813 : struct spdk_nvmf_subsystem *subsystem;
1814 : spdk_nvmf_subsystem_state_change_done cb_fn;
1815 : uint32_t nsid;
1816 : };
1817 :
1818 : static void
1819 1 : _nvmf_ns_hot_remove(struct spdk_nvmf_subsystem *subsystem,
1820 : void *cb_arg, int status)
1821 : {
1822 1 : struct subsystem_ns_change_ctx *ctx = cb_arg;
1823 : int rc;
1824 :
1825 1 : rc = spdk_nvmf_subsystem_remove_ns(subsystem, ctx->nsid);
1826 1 : if (rc != 0) {
1827 0 : SPDK_ERRLOG("Failed to make changes to NVME-oF subsystem with id: %u\n", subsystem->id);
1828 : }
1829 :
1830 1 : rc = spdk_nvmf_subsystem_resume(subsystem, NULL, NULL);
1831 1 : if (rc != 0) {
1832 0 : SPDK_ERRLOG("Failed to resume NVME-oF subsystem with id: %u\n", subsystem->id);
1833 : }
1834 :
1835 1 : free(ctx);
1836 1 : }
1837 :
1838 : static void
1839 0 : nvmf_ns_change_msg(void *ns_ctx)
1840 : {
1841 0 : struct subsystem_ns_change_ctx *ctx = ns_ctx;
1842 : int rc;
1843 :
1844 : SPDK_DTRACE_PROBE2(nvmf_ns_change, ctx->nsid, ctx->subsystem->subnqn);
1845 :
1846 0 : rc = spdk_nvmf_subsystem_pause(ctx->subsystem, ctx->nsid, ctx->cb_fn, ctx);
1847 0 : if (rc) {
1848 0 : if (rc == -EBUSY) {
1849 : /* Try again, this is not a permanent situation. */
1850 0 : spdk_thread_send_msg(spdk_get_thread(), nvmf_ns_change_msg, ctx);
1851 : } else {
1852 0 : free(ctx);
1853 0 : SPDK_ERRLOG("Unable to pause subsystem to process namespace removal!\n");
1854 : }
1855 : }
1856 0 : }
1857 :
1858 : static void
1859 1 : nvmf_ns_hot_remove(void *remove_ctx)
1860 : {
1861 1 : struct spdk_nvmf_ns *ns = remove_ctx;
1862 : struct subsystem_ns_change_ctx *ns_ctx;
1863 : int rc;
1864 :
1865 : /* We have to allocate a new context because this op
1866 : * is asynchronous and we could lose the ns in the middle.
1867 : */
1868 1 : ns_ctx = calloc(1, sizeof(struct subsystem_ns_change_ctx));
1869 1 : if (!ns_ctx) {
1870 0 : SPDK_ERRLOG("Unable to allocate context to process namespace removal!\n");
1871 0 : return;
1872 : }
1873 :
1874 1 : ns_ctx->subsystem = ns->subsystem;
1875 1 : ns_ctx->nsid = ns->opts.nsid;
1876 1 : ns_ctx->cb_fn = _nvmf_ns_hot_remove;
1877 :
1878 1 : rc = spdk_nvmf_subsystem_pause(ns->subsystem, ns_ctx->nsid, _nvmf_ns_hot_remove, ns_ctx);
1879 1 : if (rc) {
1880 0 : if (rc == -EBUSY) {
1881 : /* Try again, this is not a permanent situation. */
1882 0 : spdk_thread_send_msg(spdk_get_thread(), nvmf_ns_change_msg, ns_ctx);
1883 : } else {
1884 0 : SPDK_ERRLOG("Unable to pause subsystem to process namespace removal!\n");
1885 0 : free(ns_ctx);
1886 : }
1887 : }
1888 : }
1889 :
1890 : static void
1891 1 : _nvmf_ns_resize(struct spdk_nvmf_subsystem *subsystem, void *cb_arg, int status)
1892 : {
1893 1 : struct subsystem_ns_change_ctx *ctx = cb_arg;
1894 :
1895 1 : nvmf_subsystem_ns_changed(subsystem, ctx->nsid);
1896 1 : if (spdk_nvmf_subsystem_resume(subsystem, NULL, NULL) != 0) {
1897 0 : SPDK_ERRLOG("Failed to resume NVME-oF subsystem with id: %u\n", subsystem->id);
1898 : }
1899 :
1900 1 : free(ctx);
1901 1 : }
1902 :
1903 : static void
1904 1 : nvmf_ns_resize(void *event_ctx)
1905 : {
1906 1 : struct spdk_nvmf_ns *ns = event_ctx;
1907 : struct subsystem_ns_change_ctx *ns_ctx;
1908 : int rc;
1909 :
1910 : /* We have to allocate a new context because this op
1911 : * is asynchronous and we could lose the ns in the middle.
1912 : */
1913 1 : ns_ctx = calloc(1, sizeof(struct subsystem_ns_change_ctx));
1914 1 : if (!ns_ctx) {
1915 0 : SPDK_ERRLOG("Unable to allocate context to process namespace removal!\n");
1916 0 : return;
1917 : }
1918 :
1919 1 : ns_ctx->subsystem = ns->subsystem;
1920 1 : ns_ctx->nsid = ns->opts.nsid;
1921 1 : ns_ctx->cb_fn = _nvmf_ns_resize;
1922 :
1923 : /* Specify 0 for the nsid here, because we do not need to pause the namespace.
1924 : * Namespaces can only be resized bigger, so there is no need to quiesce I/O.
1925 : */
1926 1 : rc = spdk_nvmf_subsystem_pause(ns->subsystem, 0, _nvmf_ns_resize, ns_ctx);
1927 1 : if (rc) {
1928 0 : if (rc == -EBUSY) {
1929 : /* Try again, this is not a permanent situation. */
1930 0 : spdk_thread_send_msg(spdk_get_thread(), nvmf_ns_change_msg, ns_ctx);
1931 : } else {
1932 0 : SPDK_ERRLOG("Unable to pause subsystem to process namespace resize!\n");
1933 0 : free(ns_ctx);
1934 : }
1935 : }
1936 : }
1937 :
1938 : static void
1939 2 : nvmf_ns_event(enum spdk_bdev_event_type type,
1940 : struct spdk_bdev *bdev,
1941 : void *event_ctx)
1942 : {
1943 2 : SPDK_DEBUGLOG(nvmf, "Bdev event: type %d, name %s, subsystem_id %d, ns_id %d\n",
1944 : type,
1945 : spdk_bdev_get_name(bdev),
1946 : ((struct spdk_nvmf_ns *)event_ctx)->subsystem->id,
1947 : ((struct spdk_nvmf_ns *)event_ctx)->nsid);
1948 :
1949 2 : switch (type) {
1950 1 : case SPDK_BDEV_EVENT_REMOVE:
1951 1 : nvmf_ns_hot_remove(event_ctx);
1952 1 : break;
1953 1 : case SPDK_BDEV_EVENT_RESIZE:
1954 1 : nvmf_ns_resize(event_ctx);
1955 1 : break;
1956 0 : default:
1957 0 : SPDK_NOTICELOG("Unsupported bdev event: type %d\n", type);
1958 0 : break;
1959 : }
1960 2 : }
1961 :
1962 : void
1963 13 : spdk_nvmf_ns_opts_get_defaults(struct spdk_nvmf_ns_opts *opts, size_t opts_size)
1964 : {
1965 13 : if (!opts) {
1966 0 : SPDK_ERRLOG("opts should not be NULL.\n");
1967 0 : return;
1968 : }
1969 :
1970 13 : if (!opts_size) {
1971 0 : SPDK_ERRLOG("opts_size should not be zero.\n");
1972 0 : return;
1973 : }
1974 :
1975 13 : memset(opts, 0, opts_size);
1976 13 : opts->opts_size = opts_size;
1977 :
1978 : #define FIELD_OK(field) \
1979 : offsetof(struct spdk_nvmf_ns_opts, field) + sizeof(opts->field) <= opts_size
1980 :
1981 : #define SET_FIELD(field, value) \
1982 : if (FIELD_OK(field)) { \
1983 : opts->field = value; \
1984 : } \
1985 :
1986 : /* All current fields are set to 0 by default. */
1987 13 : SET_FIELD(nsid, 0);
1988 13 : if (FIELD_OK(nguid)) {
1989 13 : memset(opts->nguid, 0, sizeof(opts->nguid));
1990 : }
1991 13 : if (FIELD_OK(eui64)) {
1992 13 : memset(opts->eui64, 0, sizeof(opts->eui64));
1993 : }
1994 13 : if (FIELD_OK(uuid)) {
1995 13 : spdk_uuid_set_null(&opts->uuid);
1996 : }
1997 13 : SET_FIELD(anagrpid, 0);
1998 13 : SET_FIELD(transport_specific, NULL);
1999 13 : SET_FIELD(hide_metadata, false);
2000 :
2001 : #undef FIELD_OK
2002 : #undef SET_FIELD
2003 : }
2004 :
2005 : static void
2006 6 : nvmf_ns_opts_copy(struct spdk_nvmf_ns_opts *opts,
2007 : const struct spdk_nvmf_ns_opts *user_opts,
2008 : size_t opts_size)
2009 : {
2010 : #define FIELD_OK(field) \
2011 : offsetof(struct spdk_nvmf_ns_opts, field) + sizeof(opts->field) <= user_opts->opts_size
2012 :
2013 : #define SET_FIELD(field) \
2014 : if (FIELD_OK(field)) { \
2015 : opts->field = user_opts->field; \
2016 : } \
2017 :
2018 6 : SET_FIELD(nsid);
2019 6 : if (FIELD_OK(nguid)) {
2020 6 : memcpy(opts->nguid, user_opts->nguid, sizeof(opts->nguid));
2021 : }
2022 6 : if (FIELD_OK(eui64)) {
2023 6 : memcpy(opts->eui64, user_opts->eui64, sizeof(opts->eui64));
2024 : }
2025 6 : if (FIELD_OK(uuid)) {
2026 6 : spdk_uuid_copy(&opts->uuid, &user_opts->uuid);
2027 : }
2028 6 : SET_FIELD(anagrpid);
2029 6 : SET_FIELD(no_auto_visible);
2030 6 : SET_FIELD(transport_specific);
2031 6 : SET_FIELD(hide_metadata);
2032 :
2033 6 : opts->opts_size = user_opts->opts_size;
2034 :
2035 : /* We should not remove this statement, but need to update the assert statement
2036 : * if we add a new field, and also add a corresponding SET_FIELD statement.
2037 : */
2038 : SPDK_STATIC_ASSERT(sizeof(struct spdk_nvmf_ns_opts) == 73, "Incorrect size");
2039 :
2040 : #undef FIELD_OK
2041 : #undef SET_FIELD
2042 6 : }
2043 :
2044 : /* Dummy bdev module used to to claim bdevs. */
2045 : static struct spdk_bdev_module ns_bdev_module = {
2046 : .name = "NVMe-oF Target",
2047 : };
2048 :
2049 : static int nvmf_ns_reservation_update(const struct spdk_nvmf_ns *ns,
2050 : const struct spdk_nvmf_reservation_info *info);
2051 : static int nvmf_ns_reservation_load(const struct spdk_nvmf_ns *ns,
2052 : struct spdk_nvmf_reservation_info *info);
2053 : static int nvmf_ns_reservation_restore(struct spdk_nvmf_ns *ns,
2054 : struct spdk_nvmf_reservation_info *info);
2055 :
2056 : bool
2057 0 : nvmf_subsystem_zone_append_supported(struct spdk_nvmf_subsystem *subsystem)
2058 : {
2059 : struct spdk_nvmf_ns *ns;
2060 :
2061 0 : for (ns = spdk_nvmf_subsystem_get_first_ns(subsystem);
2062 0 : ns != NULL;
2063 0 : ns = spdk_nvmf_subsystem_get_next_ns(subsystem, ns)) {
2064 0 : if (spdk_bdev_is_zoned(ns->bdev) &&
2065 0 : spdk_bdev_io_type_supported(ns->bdev, SPDK_BDEV_IO_TYPE_ZONE_APPEND)) {
2066 0 : return true;
2067 : }
2068 : }
2069 :
2070 0 : return false;
2071 : }
2072 :
2073 : uint32_t
2074 7 : spdk_nvmf_subsystem_add_ns_ext(struct spdk_nvmf_subsystem *subsystem, const char *bdev_name,
2075 : const struct spdk_nvmf_ns_opts *user_opts, size_t opts_size,
2076 : const char *ptpl_file)
2077 : {
2078 : struct spdk_nvmf_transport *transport;
2079 7 : struct spdk_nvmf_ns_opts opts;
2080 7 : struct spdk_bdev_open_opts open_opts = {};
2081 : struct spdk_nvmf_ns *ns, *first_ns;
2082 : struct spdk_nvmf_ctrlr *ctrlr;
2083 7 : struct spdk_nvmf_reservation_info info = {0};
2084 : int rc;
2085 : bool zone_append_supported;
2086 : uint64_t max_zone_append_size_kib;
2087 :
2088 7 : if (!(subsystem->state == SPDK_NVMF_SUBSYSTEM_INACTIVE ||
2089 0 : subsystem->state == SPDK_NVMF_SUBSYSTEM_PAUSED)) {
2090 0 : return 0;
2091 : }
2092 :
2093 7 : spdk_nvmf_ns_opts_get_defaults(&opts, sizeof(opts));
2094 7 : if (user_opts) {
2095 6 : nvmf_ns_opts_copy(&opts, user_opts, opts_size);
2096 : }
2097 :
2098 7 : if (opts.nsid == SPDK_NVME_GLOBAL_NS_TAG) {
2099 1 : SPDK_ERRLOG("Invalid NSID %" PRIu32 "\n", opts.nsid);
2100 1 : return 0;
2101 : }
2102 :
2103 6 : if (opts.nsid == 0) {
2104 : /*
2105 : * NSID not specified - find a free index.
2106 : *
2107 : * If no free slots are found, return error.
2108 : */
2109 2 : for (opts.nsid = 1; opts.nsid <= subsystem->max_nsid; opts.nsid++) {
2110 2 : if (_nvmf_subsystem_get_ns(subsystem, opts.nsid) == NULL) {
2111 2 : break;
2112 : }
2113 : }
2114 2 : if (opts.nsid > subsystem->max_nsid) {
2115 0 : SPDK_ERRLOG("No free namespace slot available in the subsystem\n");
2116 0 : return 0;
2117 : }
2118 : }
2119 :
2120 6 : if (opts.nsid > subsystem->max_nsid) {
2121 0 : SPDK_ERRLOG("NSID greater than maximum not allowed\n");
2122 0 : return 0;
2123 : }
2124 :
2125 6 : if (_nvmf_subsystem_get_ns(subsystem, opts.nsid)) {
2126 1 : SPDK_ERRLOG("Requested NSID %" PRIu32 " already in use\n", opts.nsid);
2127 1 : return 0;
2128 : }
2129 :
2130 5 : if (opts.anagrpid == 0) {
2131 5 : opts.anagrpid = opts.nsid;
2132 : }
2133 :
2134 5 : if (opts.anagrpid > subsystem->max_nsid) {
2135 0 : SPDK_ERRLOG("ANAGRPID greater than maximum NSID not allowed\n");
2136 0 : return 0;
2137 : }
2138 :
2139 5 : ns = calloc(1, sizeof(*ns));
2140 5 : if (ns == NULL) {
2141 0 : SPDK_ERRLOG("Namespace allocation failed\n");
2142 0 : return 0;
2143 : }
2144 :
2145 5 : TAILQ_INIT(&ns->hosts);
2146 5 : ns->always_visible = !opts.no_auto_visible;
2147 5 : TAILQ_FOREACH(ctrlr, &subsystem->ctrlrs, link) {
2148 0 : nvmf_ctrlr_ns_set_visible(ctrlr, opts.nsid, ns->always_visible);
2149 : }
2150 :
2151 5 : spdk_bdev_open_opts_init(&open_opts, sizeof(open_opts));
2152 5 : open_opts.hide_metadata = opts.hide_metadata;
2153 :
2154 5 : rc = spdk_bdev_open_ext_v2(bdev_name, true, nvmf_ns_event, ns, &open_opts, &ns->desc);
2155 5 : if (rc != 0) {
2156 0 : SPDK_ERRLOG("Subsystem %s: bdev %s cannot be opened, error=%d\n",
2157 : subsystem->subnqn, bdev_name, rc);
2158 0 : free(ns);
2159 0 : return 0;
2160 : }
2161 :
2162 5 : ns->bdev = spdk_bdev_desc_get_bdev(ns->desc);
2163 :
2164 5 : if (spdk_bdev_desc_get_md_size(ns->desc) != 0) {
2165 0 : if (!spdk_bdev_desc_is_md_interleaved(ns->desc)) {
2166 0 : SPDK_ERRLOG("Can't attach bdev with separate metadata.\n");
2167 0 : spdk_bdev_close(ns->desc);
2168 0 : free(ns);
2169 0 : return 0;
2170 : }
2171 :
2172 0 : if (spdk_bdev_desc_get_md_size(ns->desc) > SPDK_BDEV_MAX_INTERLEAVED_MD_SIZE) {
2173 0 : SPDK_ERRLOG("Maximum supported interleaved md size %u, current md size %u\n",
2174 : SPDK_BDEV_MAX_INTERLEAVED_MD_SIZE,
2175 : spdk_bdev_desc_get_md_size(ns->desc));
2176 0 : spdk_bdev_close(ns->desc);
2177 0 : free(ns);
2178 0 : return 0;
2179 : }
2180 : }
2181 :
2182 5 : rc = spdk_bdev_module_claim_bdev(ns->bdev, ns->desc, &ns_bdev_module);
2183 5 : if (rc != 0) {
2184 0 : spdk_bdev_close(ns->desc);
2185 0 : free(ns);
2186 0 : return 0;
2187 : }
2188 :
2189 5 : ns->passthru_nsid = spdk_bdev_get_nvme_nsid(ns->bdev);
2190 5 : if (subsystem->passthrough && ns->passthru_nsid == 0) {
2191 0 : SPDK_ERRLOG("Only bdev_nvme namespaces can be added to a passthrough subsystem.\n");
2192 0 : goto err;
2193 : }
2194 :
2195 : /* Cache the zcopy capability of the bdev device */
2196 5 : ns->zcopy = spdk_bdev_io_type_supported(ns->bdev, SPDK_BDEV_IO_TYPE_ZCOPY);
2197 :
2198 5 : if (spdk_uuid_is_null(&opts.uuid)) {
2199 5 : opts.uuid = *spdk_bdev_get_uuid(ns->bdev);
2200 : }
2201 :
2202 : /* if nguid descriptor is supported by bdev module (nvme) then uuid = nguid */
2203 5 : if (spdk_mem_all_zero(opts.nguid, sizeof(opts.nguid))) {
2204 : SPDK_STATIC_ASSERT(sizeof(opts.nguid) == sizeof(opts.uuid), "size mismatch");
2205 5 : memcpy(opts.nguid, spdk_bdev_get_uuid(ns->bdev), sizeof(opts.nguid));
2206 : }
2207 :
2208 5 : if (spdk_bdev_is_zoned(ns->bdev)) {
2209 0 : SPDK_DEBUGLOG(nvmf, "The added namespace is backed by a zoned block device.\n");
2210 0 : ns->csi = SPDK_NVME_CSI_ZNS;
2211 :
2212 0 : zone_append_supported = spdk_bdev_io_type_supported(ns->bdev,
2213 : SPDK_BDEV_IO_TYPE_ZONE_APPEND);
2214 0 : max_zone_append_size_kib = spdk_bdev_get_max_zone_append_size(ns->bdev) *
2215 0 : spdk_bdev_desc_get_block_size(ns->desc);
2216 :
2217 0 : if (_nvmf_subsystem_get_first_zoned_ns(subsystem) != NULL &&
2218 0 : (nvmf_subsystem_zone_append_supported(subsystem) != zone_append_supported ||
2219 0 : subsystem->max_zone_append_size_kib != max_zone_append_size_kib)) {
2220 0 : SPDK_ERRLOG("Namespaces with different zone append support or different zone append size are not allowed.\n");
2221 0 : goto err;
2222 : }
2223 :
2224 0 : subsystem->max_zone_append_size_kib = max_zone_append_size_kib;
2225 : }
2226 :
2227 5 : first_ns = spdk_nvmf_subsystem_get_first_ns(subsystem);
2228 5 : if (!first_ns) {
2229 4 : if (spdk_bdev_get_nvme_ctratt(ns->bdev).bits.fdps) {
2230 1 : SPDK_DEBUGLOG(nvmf, "Subsystem with id: %u has FDP capability.\n",
2231 : subsystem->id);
2232 1 : subsystem->fdp_supported = true;
2233 : }
2234 : } else {
2235 1 : if (spdk_bdev_get_nvme_ctratt(first_ns->bdev).bits.fdps !=
2236 1 : spdk_bdev_get_nvme_ctratt(ns->bdev).bits.fdps) {
2237 1 : SPDK_ERRLOG("Subsystem with id: %u can%s FDP namespace.\n", subsystem->id,
2238 : spdk_bdev_get_nvme_ctratt(first_ns->bdev).bits.fdps ? " only add" : "not add");
2239 1 : goto err;
2240 : }
2241 : }
2242 :
2243 4 : ns->opts = opts;
2244 4 : ns->subsystem = subsystem;
2245 4 : subsystem->ns[opts.nsid - 1] = ns;
2246 4 : ns->nsid = opts.nsid;
2247 4 : ns->anagrpid = opts.anagrpid;
2248 4 : subsystem->ana_group[ns->anagrpid - 1]++;
2249 4 : TAILQ_INIT(&ns->registrants);
2250 4 : if (ptpl_file) {
2251 0 : ns->ptpl_file = strdup(ptpl_file);
2252 0 : if (!ns->ptpl_file) {
2253 0 : SPDK_ERRLOG("Namespace ns->ptpl_file allocation failed\n");
2254 0 : goto err;
2255 : }
2256 : }
2257 :
2258 4 : if (nvmf_ns_is_ptpl_capable(ns)) {
2259 1 : rc = nvmf_ns_reservation_load(ns, &info);
2260 1 : if (rc) {
2261 0 : SPDK_ERRLOG("Subsystem load reservation failed\n");
2262 0 : goto err;
2263 : }
2264 :
2265 1 : rc = nvmf_ns_reservation_restore(ns, &info);
2266 1 : if (rc) {
2267 0 : SPDK_ERRLOG("Subsystem restore reservation failed\n");
2268 0 : goto err;
2269 : }
2270 : }
2271 :
2272 4 : for (transport = spdk_nvmf_transport_get_first(subsystem->tgt); transport;
2273 0 : transport = spdk_nvmf_transport_get_next(transport)) {
2274 0 : if (transport->ops->subsystem_add_ns) {
2275 0 : rc = transport->ops->subsystem_add_ns(transport, subsystem, ns);
2276 0 : if (rc) {
2277 0 : SPDK_ERRLOG("Namespace attachment is not allowed by %s transport\n", transport->ops->name);
2278 0 : nvmf_ns_reservation_clear_all_registrants(ns);
2279 0 : goto err;
2280 : }
2281 : }
2282 : }
2283 :
2284 : /* JSON value obj is freed before sending the response. Set NULL to prevent usage of dangling pointer. */
2285 4 : ns->opts.transport_specific = NULL;
2286 :
2287 4 : SPDK_DEBUGLOG(nvmf, "Subsystem %s: bdev %s assigned nsid %" PRIu32 "\n",
2288 : spdk_nvmf_subsystem_get_nqn(subsystem),
2289 : bdev_name,
2290 : opts.nsid);
2291 :
2292 4 : nvmf_subsystem_ns_changed(subsystem, opts.nsid);
2293 :
2294 : SPDK_DTRACE_PROBE2(nvmf_subsystem_add_ns, subsystem->subnqn, ns->nsid);
2295 :
2296 4 : return opts.nsid;
2297 1 : err:
2298 1 : subsystem->ns[opts.nsid - 1] = NULL;
2299 1 : spdk_bdev_module_release_bdev(ns->bdev);
2300 1 : spdk_bdev_close(ns->desc);
2301 1 : free(ns->ptpl_file);
2302 1 : free(ns);
2303 :
2304 1 : return 0;
2305 : }
2306 :
2307 : int
2308 0 : spdk_nvmf_subsystem_set_ns_ana_group(struct spdk_nvmf_subsystem *subsystem,
2309 : uint32_t nsid, uint32_t anagrpid)
2310 : {
2311 : struct spdk_nvmf_ns *ns;
2312 :
2313 0 : if (anagrpid > subsystem->max_nsid) {
2314 0 : SPDK_ERRLOG("ANAGRPID greater than maximum NSID not allowed\n");
2315 0 : return -1;
2316 : }
2317 :
2318 0 : if (anagrpid == 0) {
2319 0 : SPDK_ERRLOG("Zero is not allowed to ANAGRPID\n");
2320 0 : return -1;
2321 : }
2322 :
2323 0 : if (nsid == 0 || nsid > subsystem->max_nsid) {
2324 0 : return -1;
2325 : }
2326 :
2327 0 : ns = subsystem->ns[nsid - 1];
2328 0 : if (!ns) {
2329 0 : return -1;
2330 : }
2331 :
2332 0 : assert(ns->anagrpid - 1 < subsystem->max_nsid);
2333 :
2334 0 : assert(subsystem->ana_group[ns->anagrpid - 1] > 0);
2335 :
2336 0 : subsystem->ana_group[ns->anagrpid - 1]--;
2337 :
2338 0 : subsystem->ana_group[anagrpid - 1]++;
2339 :
2340 0 : ns->anagrpid = anagrpid;
2341 0 : ns->opts.anagrpid = anagrpid;
2342 :
2343 0 : nvmf_subsystem_ns_changed(subsystem, nsid);
2344 :
2345 0 : return 0;
2346 : }
2347 :
2348 : static uint32_t
2349 19 : nvmf_subsystem_get_next_allocated_nsid(struct spdk_nvmf_subsystem *subsystem,
2350 : uint32_t prev_nsid)
2351 : {
2352 : uint32_t nsid;
2353 :
2354 19 : if (prev_nsid >= subsystem->max_nsid) {
2355 1 : return 0;
2356 : }
2357 :
2358 4504 : for (nsid = prev_nsid + 1; nsid <= subsystem->max_nsid; nsid++) {
2359 4487 : if (subsystem->ns[nsid - 1]) {
2360 1 : return nsid;
2361 : }
2362 : }
2363 :
2364 17 : return 0;
2365 : }
2366 :
2367 : struct spdk_nvmf_ns *
2368 19 : spdk_nvmf_subsystem_get_first_ns(struct spdk_nvmf_subsystem *subsystem)
2369 : {
2370 : uint32_t first_nsid;
2371 :
2372 19 : first_nsid = nvmf_subsystem_get_next_allocated_nsid(subsystem, 0);
2373 19 : return _nvmf_subsystem_get_ns(subsystem, first_nsid);
2374 : }
2375 :
2376 : struct spdk_nvmf_ns *
2377 0 : spdk_nvmf_subsystem_get_next_ns(struct spdk_nvmf_subsystem *subsystem,
2378 : struct spdk_nvmf_ns *prev_ns)
2379 : {
2380 : uint32_t next_nsid;
2381 :
2382 0 : next_nsid = nvmf_subsystem_get_next_allocated_nsid(subsystem, prev_ns->opts.nsid);
2383 0 : return _nvmf_subsystem_get_ns(subsystem, next_nsid);
2384 : }
2385 :
2386 : struct spdk_nvmf_ns *
2387 0 : spdk_nvmf_subsystem_get_ns(struct spdk_nvmf_subsystem *subsystem, uint32_t nsid)
2388 : {
2389 0 : return _nvmf_subsystem_get_ns(subsystem, nsid);
2390 : }
2391 :
2392 : uint32_t
2393 0 : spdk_nvmf_ns_get_id(const struct spdk_nvmf_ns *ns)
2394 : {
2395 0 : return ns->opts.nsid;
2396 : }
2397 :
2398 : struct spdk_bdev *
2399 0 : spdk_nvmf_ns_get_bdev(struct spdk_nvmf_ns *ns)
2400 : {
2401 0 : return ns->bdev;
2402 : }
2403 :
2404 : void
2405 0 : spdk_nvmf_ns_get_opts(const struct spdk_nvmf_ns *ns, struct spdk_nvmf_ns_opts *opts,
2406 : size_t opts_size)
2407 : {
2408 0 : memset(opts, 0, opts_size);
2409 0 : memcpy(opts, &ns->opts, spdk_min(sizeof(ns->opts), opts_size));
2410 0 : }
2411 :
2412 : const char *
2413 0 : spdk_nvmf_subsystem_get_sn(const struct spdk_nvmf_subsystem *subsystem)
2414 : {
2415 0 : return subsystem->sn;
2416 : }
2417 :
2418 : int
2419 4 : spdk_nvmf_subsystem_set_sn(struct spdk_nvmf_subsystem *subsystem, const char *sn)
2420 : {
2421 : size_t len, max_len;
2422 :
2423 4 : max_len = sizeof(subsystem->sn) - 1;
2424 4 : len = strlen(sn);
2425 4 : if (len > max_len) {
2426 1 : SPDK_DEBUGLOG(nvmf, "Invalid sn \"%s\": length %zu > max %zu\n",
2427 : sn, len, max_len);
2428 1 : return -1;
2429 : }
2430 :
2431 3 : if (!nvmf_valid_ascii_string(sn, len)) {
2432 1 : SPDK_DEBUGLOG(nvmf, "Non-ASCII sn\n");
2433 1 : SPDK_LOGDUMP(nvmf, "sn", sn, len);
2434 1 : return -1;
2435 : }
2436 :
2437 2 : snprintf(subsystem->sn, sizeof(subsystem->sn), "%s", sn);
2438 :
2439 2 : return 0;
2440 : }
2441 :
2442 : const char *
2443 0 : spdk_nvmf_subsystem_get_mn(const struct spdk_nvmf_subsystem *subsystem)
2444 : {
2445 0 : return subsystem->mn;
2446 : }
2447 :
2448 : int
2449 0 : spdk_nvmf_subsystem_set_mn(struct spdk_nvmf_subsystem *subsystem, const char *mn)
2450 : {
2451 : size_t len, max_len;
2452 :
2453 0 : if (mn == NULL) {
2454 0 : mn = MODEL_NUMBER_DEFAULT;
2455 : }
2456 0 : max_len = sizeof(subsystem->mn) - 1;
2457 0 : len = strlen(mn);
2458 0 : if (len > max_len) {
2459 0 : SPDK_DEBUGLOG(nvmf, "Invalid mn \"%s\": length %zu > max %zu\n",
2460 : mn, len, max_len);
2461 0 : return -1;
2462 : }
2463 :
2464 0 : if (!nvmf_valid_ascii_string(mn, len)) {
2465 0 : SPDK_DEBUGLOG(nvmf, "Non-ASCII mn\n");
2466 0 : SPDK_LOGDUMP(nvmf, "mn", mn, len);
2467 0 : return -1;
2468 : }
2469 :
2470 0 : snprintf(subsystem->mn, sizeof(subsystem->mn), "%s", mn);
2471 :
2472 0 : return 0;
2473 : }
2474 :
2475 : const char *
2476 0 : spdk_nvmf_subsystem_get_nqn(const struct spdk_nvmf_subsystem *subsystem)
2477 : {
2478 0 : return subsystem->subnqn;
2479 : }
2480 :
2481 : /* We have to use the typedef in the function declaration to appease astyle. */
2482 : typedef enum spdk_nvmf_subtype spdk_nvmf_subtype_t;
2483 :
2484 : spdk_nvmf_subtype_t
2485 0 : spdk_nvmf_subsystem_get_type(struct spdk_nvmf_subsystem *subsystem)
2486 : {
2487 0 : return subsystem->subtype;
2488 : }
2489 :
2490 : uint32_t
2491 0 : spdk_nvmf_subsystem_get_max_nsid(struct spdk_nvmf_subsystem *subsystem)
2492 : {
2493 0 : return subsystem->max_nsid;
2494 : }
2495 :
2496 : int
2497 0 : spdk_nvmf_subsystem_set_cntlid_range(struct spdk_nvmf_subsystem *subsystem,
2498 : uint16_t min_cntlid, uint16_t max_cntlid)
2499 : {
2500 0 : if (subsystem->state != SPDK_NVMF_SUBSYSTEM_INACTIVE) {
2501 0 : return -EAGAIN;
2502 : }
2503 :
2504 0 : if (min_cntlid > max_cntlid) {
2505 0 : return -EINVAL;
2506 : }
2507 : /* The spec reserves cntlid values in the range FFF0h to FFFFh. */
2508 0 : if (min_cntlid < NVMF_MIN_CNTLID || min_cntlid > NVMF_MAX_CNTLID ||
2509 0 : max_cntlid < NVMF_MIN_CNTLID || max_cntlid > NVMF_MAX_CNTLID) {
2510 0 : return -EINVAL;
2511 : }
2512 0 : subsystem->min_cntlid = min_cntlid;
2513 0 : subsystem->max_cntlid = max_cntlid;
2514 0 : if (subsystem->next_cntlid < min_cntlid || subsystem->next_cntlid > max_cntlid) {
2515 0 : subsystem->next_cntlid = min_cntlid;
2516 : }
2517 :
2518 0 : return 0;
2519 : }
2520 :
2521 : uint16_t
2522 1 : nvmf_subsystem_gen_cntlid(struct spdk_nvmf_subsystem *subsystem)
2523 : {
2524 : int count;
2525 : uint16_t cntlid;
2526 :
2527 : /*
2528 : * In the worst case, we might have to try all CNTLID values between min_cntlid and max_cntlid
2529 : * before we find one that is unused (or find that all values are in use).
2530 : */
2531 1 : for (count = 0; count < subsystem->max_cntlid - subsystem->min_cntlid + 1; count++) {
2532 1 : cntlid = subsystem->next_cntlid;
2533 1 : subsystem->next_cntlid++;
2534 :
2535 1 : if (subsystem->next_cntlid > subsystem->max_cntlid) {
2536 0 : subsystem->next_cntlid = subsystem->min_cntlid;
2537 : }
2538 :
2539 : /* Check if a controller with this cntlid currently exists. */
2540 1 : if (nvmf_subsystem_get_ctrlr(subsystem, cntlid) == NULL) {
2541 : /* Found unused cntlid */
2542 1 : return cntlid;
2543 : }
2544 : }
2545 :
2546 : /* All valid cntlid values are in use. */
2547 0 : return 0xFFFF;
2548 : }
2549 :
2550 : int
2551 1 : nvmf_subsystem_add_ctrlr(struct spdk_nvmf_subsystem *subsystem, struct spdk_nvmf_ctrlr *ctrlr)
2552 : {
2553 :
2554 1 : if (ctrlr->dynamic_ctrlr) {
2555 1 : ctrlr->cntlid = nvmf_subsystem_gen_cntlid(subsystem);
2556 1 : if (ctrlr->cntlid == 0xFFFF) {
2557 : /* Unable to get a cntlid */
2558 0 : SPDK_ERRLOG("Reached max simultaneous ctrlrs\n");
2559 0 : return -EBUSY;
2560 : }
2561 0 : } else if (nvmf_subsystem_get_ctrlr(subsystem, ctrlr->cntlid) != NULL) {
2562 0 : SPDK_ERRLOG("Ctrlr with cntlid %u already exist\n", ctrlr->cntlid);
2563 0 : return -EEXIST;
2564 : }
2565 :
2566 1 : TAILQ_INSERT_TAIL(&subsystem->ctrlrs, ctrlr, link);
2567 :
2568 : SPDK_DTRACE_PROBE3(nvmf_subsystem_add_ctrlr, subsystem->subnqn, ctrlr, ctrlr->hostnqn);
2569 :
2570 1 : return 0;
2571 : }
2572 :
2573 : void
2574 1 : nvmf_subsystem_remove_ctrlr(struct spdk_nvmf_subsystem *subsystem,
2575 : struct spdk_nvmf_ctrlr *ctrlr)
2576 : {
2577 : SPDK_DTRACE_PROBE3(nvmf_subsystem_remove_ctrlr, subsystem->subnqn, ctrlr, ctrlr->hostnqn);
2578 :
2579 1 : assert(spdk_get_thread() == subsystem->thread);
2580 1 : assert(subsystem == ctrlr->subsys);
2581 1 : SPDK_DEBUGLOG(nvmf, "remove ctrlr %p id 0x%x from subsys %p %s\n", ctrlr, ctrlr->cntlid, subsystem,
2582 : subsystem->subnqn);
2583 1 : TAILQ_REMOVE(&subsystem->ctrlrs, ctrlr, link);
2584 1 : }
2585 :
2586 : struct spdk_nvmf_ctrlr *
2587 2 : nvmf_subsystem_get_ctrlr(struct spdk_nvmf_subsystem *subsystem, uint16_t cntlid)
2588 : {
2589 : struct spdk_nvmf_ctrlr *ctrlr;
2590 :
2591 2 : TAILQ_FOREACH(ctrlr, &subsystem->ctrlrs, link) {
2592 1 : if (ctrlr->cntlid == cntlid) {
2593 1 : return ctrlr;
2594 : }
2595 : }
2596 :
2597 1 : return NULL;
2598 : }
2599 :
2600 : uint32_t
2601 0 : spdk_nvmf_subsystem_get_max_namespaces(const struct spdk_nvmf_subsystem *subsystem)
2602 : {
2603 0 : return subsystem->max_nsid;
2604 : }
2605 :
2606 : uint16_t
2607 0 : spdk_nvmf_subsystem_get_min_cntlid(const struct spdk_nvmf_subsystem *subsystem)
2608 : {
2609 0 : return subsystem->min_cntlid;
2610 : }
2611 :
2612 : uint16_t
2613 0 : spdk_nvmf_subsystem_get_max_cntlid(const struct spdk_nvmf_subsystem *subsystem)
2614 : {
2615 0 : return subsystem->max_cntlid;
2616 : }
2617 :
2618 : struct _nvmf_ns_registrant {
2619 : uint64_t rkey;
2620 : char *host_uuid;
2621 : };
2622 :
2623 : struct _nvmf_ns_registrants {
2624 : size_t num_regs;
2625 : struct _nvmf_ns_registrant reg[SPDK_NVMF_MAX_NUM_REGISTRANTS];
2626 : };
2627 :
2628 : struct _nvmf_ns_reservation {
2629 : bool ptpl_activated;
2630 : enum spdk_nvme_reservation_type rtype;
2631 : uint64_t crkey;
2632 : char *bdev_uuid;
2633 : char *holder_uuid;
2634 : struct _nvmf_ns_registrants regs;
2635 : };
2636 :
2637 : static const struct spdk_json_object_decoder nvmf_ns_pr_reg_decoders[] = {
2638 : {"rkey", offsetof(struct _nvmf_ns_registrant, rkey), spdk_json_decode_uint64},
2639 : {"host_uuid", offsetof(struct _nvmf_ns_registrant, host_uuid), spdk_json_decode_string},
2640 : };
2641 :
2642 : static int
2643 4 : nvmf_decode_ns_pr_reg(const struct spdk_json_val *val, void *out)
2644 : {
2645 4 : struct _nvmf_ns_registrant *reg = out;
2646 :
2647 4 : return spdk_json_decode_object(val, nvmf_ns_pr_reg_decoders,
2648 : SPDK_COUNTOF(nvmf_ns_pr_reg_decoders), reg);
2649 : }
2650 :
2651 : static int
2652 4 : nvmf_decode_ns_pr_regs(const struct spdk_json_val *val, void *out)
2653 : {
2654 4 : struct _nvmf_ns_registrants *regs = out;
2655 :
2656 4 : return spdk_json_decode_array(val, nvmf_decode_ns_pr_reg, regs->reg,
2657 : SPDK_NVMF_MAX_NUM_REGISTRANTS, ®s->num_regs,
2658 : sizeof(struct _nvmf_ns_registrant));
2659 : }
2660 :
2661 : static const struct spdk_json_object_decoder nvmf_ns_pr_decoders[] = {
2662 : {"ptpl", offsetof(struct _nvmf_ns_reservation, ptpl_activated), spdk_json_decode_bool, true},
2663 : {"rtype", offsetof(struct _nvmf_ns_reservation, rtype), spdk_json_decode_uint32, true},
2664 : {"crkey", offsetof(struct _nvmf_ns_reservation, crkey), spdk_json_decode_uint64, true},
2665 : {"bdev_uuid", offsetof(struct _nvmf_ns_reservation, bdev_uuid), spdk_json_decode_string},
2666 : {"holder_uuid", offsetof(struct _nvmf_ns_reservation, holder_uuid), spdk_json_decode_string, true},
2667 : {"registrants", offsetof(struct _nvmf_ns_reservation, regs), nvmf_decode_ns_pr_regs},
2668 : };
2669 :
2670 : static int
2671 5 : nvmf_ns_reservation_load_json(const struct spdk_nvmf_ns *ns,
2672 : struct spdk_nvmf_reservation_info *info)
2673 : {
2674 5 : size_t json_size;
2675 : ssize_t values_cnt, rc;
2676 5 : void *json = NULL, *end;
2677 5 : struct spdk_json_val *values = NULL;
2678 5 : struct _nvmf_ns_reservation res = {};
2679 5 : const char *file = ns->ptpl_file;
2680 : uint32_t i;
2681 :
2682 : /* It's not an error if the file does not exist */
2683 5 : if (access(file, F_OK) != 0) {
2684 0 : SPDK_DEBUGLOG(nvmf, "File %s does not exist\n", file);
2685 0 : return 0;
2686 : }
2687 :
2688 : /* Load all persist file contents into a local buffer */
2689 5 : json = spdk_posix_file_load_from_name(file, &json_size);
2690 5 : if (!json) {
2691 0 : SPDK_ERRLOG("Load persist file %s failed\n", file);
2692 0 : return -ENOMEM;
2693 : }
2694 :
2695 5 : rc = spdk_json_parse(json, json_size, NULL, 0, &end, 0);
2696 5 : if (rc < 0) {
2697 1 : SPDK_NOTICELOG("Parsing JSON configuration failed (%zd)\n", rc);
2698 1 : goto exit;
2699 : }
2700 :
2701 4 : values_cnt = rc;
2702 4 : values = calloc(values_cnt, sizeof(struct spdk_json_val));
2703 4 : if (values == NULL) {
2704 0 : goto exit;
2705 : }
2706 :
2707 4 : rc = spdk_json_parse(json, json_size, values, values_cnt, &end, 0);
2708 4 : if (rc != values_cnt) {
2709 0 : SPDK_ERRLOG("Parsing JSON configuration failed (%zd)\n", rc);
2710 0 : goto exit;
2711 : }
2712 :
2713 : /* Decode json */
2714 4 : if (spdk_json_decode_object(values, nvmf_ns_pr_decoders,
2715 : SPDK_COUNTOF(nvmf_ns_pr_decoders),
2716 : &res)) {
2717 0 : SPDK_ERRLOG("Invalid objects in the persist file %s\n", file);
2718 0 : rc = -EINVAL;
2719 0 : goto exit;
2720 : }
2721 :
2722 4 : if (res.regs.num_regs > SPDK_NVMF_MAX_NUM_REGISTRANTS) {
2723 0 : SPDK_ERRLOG("Can only support up to %u registrants\n", SPDK_NVMF_MAX_NUM_REGISTRANTS);
2724 0 : rc = -ERANGE;
2725 0 : goto exit;
2726 : }
2727 :
2728 4 : rc = 0;
2729 4 : info->ptpl_activated = res.ptpl_activated;
2730 4 : info->rtype = res.rtype;
2731 4 : info->crkey = res.crkey;
2732 4 : snprintf(info->bdev_uuid, sizeof(info->bdev_uuid), "%s", res.bdev_uuid);
2733 4 : snprintf(info->holder_uuid, sizeof(info->holder_uuid), "%s", res.holder_uuid);
2734 4 : info->num_regs = res.regs.num_regs;
2735 8 : for (i = 0; i < res.regs.num_regs; i++) {
2736 4 : info->registrants[i].rkey = res.regs.reg[i].rkey;
2737 4 : snprintf(info->registrants[i].host_uuid, sizeof(info->registrants[i].host_uuid), "%s",
2738 4 : res.regs.reg[i].host_uuid);
2739 : }
2740 :
2741 5 : exit:
2742 5 : free(json);
2743 5 : free(values);
2744 5 : free(res.bdev_uuid);
2745 5 : free(res.holder_uuid);
2746 9 : for (i = 0; i < res.regs.num_regs; i++) {
2747 4 : free(res.regs.reg[i].host_uuid);
2748 : }
2749 :
2750 5 : return rc;
2751 : }
2752 :
2753 : static bool nvmf_ns_reservation_all_registrants_type(struct spdk_nvmf_ns *ns);
2754 :
2755 : static int
2756 5 : nvmf_ns_reservation_restore(struct spdk_nvmf_ns *ns, struct spdk_nvmf_reservation_info *info)
2757 : {
2758 : uint32_t i;
2759 5 : struct spdk_nvmf_registrant *reg, *holder = NULL;
2760 5 : struct spdk_uuid bdev_uuid, holder_uuid;
2761 5 : bool rkey_flag = false;
2762 :
2763 5 : SPDK_DEBUGLOG(nvmf, "NSID %u, PTPL %u, Number of registrants %u\n",
2764 : ns->nsid, info->ptpl_activated, info->num_regs);
2765 :
2766 : /* it's not an error */
2767 5 : if (!info->ptpl_activated || !info->num_regs) {
2768 0 : return 0;
2769 : }
2770 :
2771 : /* Check info->crkey exist or not in info->registrants[i].rkey */
2772 14 : for (i = 0; i < info->num_regs; i++) {
2773 9 : if (info->crkey == info->registrants[i].rkey) {
2774 3 : rkey_flag = true;
2775 : }
2776 : }
2777 5 : if (!rkey_flag && info->crkey != 0) {
2778 1 : return -EINVAL;
2779 : }
2780 :
2781 4 : spdk_uuid_parse(&bdev_uuid, info->bdev_uuid);
2782 4 : if (spdk_uuid_compare(&bdev_uuid, spdk_bdev_get_uuid(ns->bdev))) {
2783 1 : SPDK_ERRLOG("Existing bdev UUID is not same with configuration file\n");
2784 1 : return -EINVAL;
2785 : }
2786 :
2787 3 : ns->crkey = info->crkey;
2788 3 : ns->rtype = info->rtype;
2789 3 : ns->ptpl_activated = info->ptpl_activated;
2790 3 : spdk_uuid_parse(&holder_uuid, info->holder_uuid);
2791 :
2792 3 : SPDK_DEBUGLOG(nvmf, "Bdev UUID %s\n", info->bdev_uuid);
2793 3 : if (info->rtype) {
2794 2 : SPDK_DEBUGLOG(nvmf, "Holder UUID %s, RTYPE %u, RKEY 0x%"PRIx64"\n",
2795 : info->holder_uuid, info->rtype, info->crkey);
2796 : }
2797 :
2798 8 : for (i = 0; i < info->num_regs; i++) {
2799 5 : reg = calloc(1, sizeof(*reg));
2800 5 : if (!reg) {
2801 0 : return -ENOMEM;
2802 : }
2803 5 : spdk_uuid_parse(®->hostid, info->registrants[i].host_uuid);
2804 5 : reg->rkey = info->registrants[i].rkey;
2805 5 : TAILQ_INSERT_TAIL(&ns->registrants, reg, link);
2806 5 : if (info->crkey != 0 && !spdk_uuid_compare(&holder_uuid, ®->hostid)) {
2807 2 : holder = reg;
2808 : }
2809 5 : SPDK_DEBUGLOG(nvmf, "Registrant RKEY 0x%"PRIx64", Host UUID %s\n",
2810 : info->registrants[i].rkey, info->registrants[i].host_uuid);
2811 : }
2812 :
2813 3 : if (nvmf_ns_reservation_all_registrants_type(ns)) {
2814 1 : ns->holder = TAILQ_FIRST(&ns->registrants);
2815 : } else {
2816 2 : ns->holder = holder;
2817 : }
2818 :
2819 3 : return 0;
2820 : }
2821 :
2822 : static int
2823 5 : nvmf_ns_json_write_cb(void *cb_ctx, const void *data, size_t size)
2824 : {
2825 5 : char *file = cb_ctx;
2826 : size_t rc;
2827 : FILE *fd;
2828 :
2829 5 : fd = fopen(file, "w");
2830 5 : if (!fd) {
2831 0 : SPDK_ERRLOG("Can't open file %s for write\n", file);
2832 0 : return -ENOENT;
2833 : }
2834 5 : rc = fwrite(data, 1, size, fd);
2835 5 : fclose(fd);
2836 :
2837 5 : return rc == size ? 0 : -1;
2838 : }
2839 :
2840 : static int
2841 5 : nvmf_ns_reservation_update_json(const struct spdk_nvmf_ns *ns,
2842 : const struct spdk_nvmf_reservation_info *info)
2843 : {
2844 5 : const char *file = ns->ptpl_file;
2845 : struct spdk_json_write_ctx *w;
2846 : uint32_t i;
2847 5 : int rc = 0;
2848 :
2849 5 : w = spdk_json_write_begin(nvmf_ns_json_write_cb, (void *)file, 0);
2850 5 : if (w == NULL) {
2851 0 : return -ENOMEM;
2852 : }
2853 : /* clear the configuration file */
2854 5 : if (!info->ptpl_activated) {
2855 1 : goto exit;
2856 : }
2857 :
2858 4 : spdk_json_write_object_begin(w);
2859 4 : spdk_json_write_named_bool(w, "ptpl", info->ptpl_activated);
2860 4 : spdk_json_write_named_uint32(w, "rtype", info->rtype);
2861 4 : spdk_json_write_named_uint64(w, "crkey", info->crkey);
2862 4 : spdk_json_write_named_string(w, "bdev_uuid", info->bdev_uuid);
2863 4 : spdk_json_write_named_string(w, "holder_uuid", info->holder_uuid);
2864 :
2865 4 : spdk_json_write_named_array_begin(w, "registrants");
2866 8 : for (i = 0; i < info->num_regs; i++) {
2867 4 : spdk_json_write_object_begin(w);
2868 4 : spdk_json_write_named_uint64(w, "rkey", info->registrants[i].rkey);
2869 4 : spdk_json_write_named_string(w, "host_uuid", info->registrants[i].host_uuid);
2870 4 : spdk_json_write_object_end(w);
2871 : }
2872 4 : spdk_json_write_array_end(w);
2873 4 : spdk_json_write_object_end(w);
2874 :
2875 5 : exit:
2876 5 : rc = spdk_json_write_end(w);
2877 5 : return rc;
2878 : }
2879 :
2880 : static int
2881 7 : nvmf_ns_update_reservation_info(struct spdk_nvmf_ns *ns)
2882 : {
2883 7 : struct spdk_nvmf_reservation_info info;
2884 : struct spdk_nvmf_registrant *reg, *tmp;
2885 7 : uint32_t i = 0;
2886 :
2887 7 : assert(ns != NULL);
2888 :
2889 7 : if (!ns->bdev || !nvmf_ns_is_ptpl_capable(ns)) {
2890 0 : return 0;
2891 : }
2892 :
2893 7 : memset(&info, 0, sizeof(info));
2894 7 : spdk_uuid_fmt_lower(info.bdev_uuid, sizeof(info.bdev_uuid), spdk_bdev_get_uuid(ns->bdev));
2895 :
2896 7 : if (ns->rtype) {
2897 2 : info.rtype = ns->rtype;
2898 2 : info.crkey = ns->crkey;
2899 2 : if (!nvmf_ns_reservation_all_registrants_type(ns)) {
2900 2 : assert(ns->holder != NULL);
2901 2 : spdk_uuid_fmt_lower(info.holder_uuid, sizeof(info.holder_uuid), &ns->holder->hostid);
2902 : }
2903 : }
2904 :
2905 14 : TAILQ_FOREACH_SAFE(reg, &ns->registrants, link, tmp) {
2906 7 : spdk_uuid_fmt_lower(info.registrants[i].host_uuid, sizeof(info.registrants[i].host_uuid),
2907 7 : ®->hostid);
2908 7 : info.registrants[i++].rkey = reg->rkey;
2909 : }
2910 :
2911 7 : info.num_regs = i;
2912 7 : info.ptpl_activated = ns->ptpl_activated;
2913 :
2914 7 : return nvmf_ns_reservation_update(ns, &info);
2915 : }
2916 :
2917 : static struct spdk_nvmf_registrant *
2918 110 : nvmf_ns_reservation_get_registrant(struct spdk_nvmf_ns *ns,
2919 : struct spdk_uuid *uuid)
2920 : {
2921 : struct spdk_nvmf_registrant *reg, *tmp;
2922 :
2923 191 : TAILQ_FOREACH_SAFE(reg, &ns->registrants, link, tmp) {
2924 151 : if (!spdk_uuid_compare(®->hostid, uuid)) {
2925 70 : return reg;
2926 : }
2927 : }
2928 :
2929 40 : return NULL;
2930 : }
2931 :
2932 : /* Generate reservation notice log to registered HostID controllers */
2933 : static void
2934 10 : nvmf_subsystem_gen_ctrlr_notification(struct spdk_nvmf_subsystem *subsystem,
2935 : struct spdk_nvmf_ns *ns,
2936 : struct spdk_uuid *hostid_list,
2937 : uint32_t num_hostid,
2938 : enum spdk_nvme_reservation_notification_log_page_type type)
2939 : {
2940 : struct spdk_nvmf_ctrlr *ctrlr;
2941 : uint32_t i;
2942 :
2943 25 : for (i = 0; i < num_hostid; i++) {
2944 75 : TAILQ_FOREACH(ctrlr, &subsystem->ctrlrs, link) {
2945 60 : if (!spdk_uuid_compare(&ctrlr->hostid, &hostid_list[i])) {
2946 22 : nvmf_ctrlr_reservation_notice_log(ctrlr, ns, type);
2947 : }
2948 : }
2949 : }
2950 10 : }
2951 :
2952 : /* Get all registrants' hostid other than the controller who issued the command */
2953 : static uint32_t
2954 16 : nvmf_ns_reservation_get_all_other_hostid(struct spdk_nvmf_ns *ns,
2955 : struct spdk_uuid *hostid_list,
2956 : uint32_t max_num_hostid,
2957 : struct spdk_uuid *current_hostid)
2958 : {
2959 : struct spdk_nvmf_registrant *reg, *tmp;
2960 16 : uint32_t num_hostid = 0;
2961 :
2962 55 : TAILQ_FOREACH_SAFE(reg, &ns->registrants, link, tmp) {
2963 39 : if (spdk_uuid_compare(®->hostid, current_hostid)) {
2964 23 : if (num_hostid == max_num_hostid) {
2965 0 : assert(false);
2966 : return max_num_hostid;
2967 : }
2968 23 : hostid_list[num_hostid++] = reg->hostid;
2969 : }
2970 : }
2971 :
2972 16 : return num_hostid;
2973 : }
2974 :
2975 : /* Calculate the unregistered HostID list according to list
2976 : * prior to execute preempt command and list after executing
2977 : * preempt command.
2978 : */
2979 : static uint32_t
2980 3 : nvmf_ns_reservation_get_unregistered_hostid(struct spdk_uuid *old_hostid_list,
2981 : uint32_t old_num_hostid,
2982 : struct spdk_uuid *remaining_hostid_list,
2983 : uint32_t remaining_num_hostid)
2984 : {
2985 3 : struct spdk_uuid temp_hostid_list[SPDK_NVMF_MAX_NUM_REGISTRANTS];
2986 3 : uint32_t i, j, num_hostid = 0;
2987 : bool found;
2988 :
2989 3 : if (!remaining_num_hostid) {
2990 1 : return old_num_hostid;
2991 : }
2992 :
2993 6 : for (i = 0; i < old_num_hostid; i++) {
2994 4 : found = false;
2995 6 : for (j = 0; j < remaining_num_hostid; j++) {
2996 4 : if (!spdk_uuid_compare(&old_hostid_list[i], &remaining_hostid_list[j])) {
2997 2 : found = true;
2998 2 : break;
2999 : }
3000 : }
3001 4 : if (!found) {
3002 2 : spdk_uuid_copy(&temp_hostid_list[num_hostid++], &old_hostid_list[i]);
3003 : }
3004 : }
3005 :
3006 2 : if (num_hostid) {
3007 2 : memcpy(old_hostid_list, temp_hostid_list, sizeof(struct spdk_uuid) * num_hostid);
3008 : }
3009 :
3010 2 : return num_hostid;
3011 : }
3012 :
3013 : /* current reservation type is all registrants or not */
3014 : static bool
3015 54 : nvmf_ns_reservation_all_registrants_type(struct spdk_nvmf_ns *ns)
3016 : {
3017 102 : return (ns->rtype == SPDK_NVME_RESERVE_WRITE_EXCLUSIVE_ALL_REGS ||
3018 48 : ns->rtype == SPDK_NVME_RESERVE_EXCLUSIVE_ACCESS_ALL_REGS);
3019 : }
3020 :
3021 : /* current registrant is reservation holder or not */
3022 : static bool
3023 26 : nvmf_ns_reservation_registrant_is_holder(struct spdk_nvmf_ns *ns,
3024 : struct spdk_nvmf_registrant *reg)
3025 : {
3026 26 : if (!reg) {
3027 0 : return false;
3028 : }
3029 :
3030 26 : if (nvmf_ns_reservation_all_registrants_type(ns)) {
3031 2 : return true;
3032 : }
3033 :
3034 24 : return (ns->holder == reg);
3035 : }
3036 :
3037 : static int
3038 29 : nvmf_ns_reservation_add_registrant(struct spdk_nvmf_ns *ns,
3039 : struct spdk_nvmf_ctrlr *ctrlr,
3040 : uint64_t nrkey)
3041 : {
3042 : struct spdk_nvmf_registrant *reg;
3043 :
3044 29 : reg = calloc(1, sizeof(*reg));
3045 29 : if (!reg) {
3046 0 : return -ENOMEM;
3047 : }
3048 :
3049 29 : reg->rkey = nrkey;
3050 : /* set hostid for the registrant */
3051 29 : spdk_uuid_copy(®->hostid, &ctrlr->hostid);
3052 29 : TAILQ_INSERT_TAIL(&ns->registrants, reg, link);
3053 29 : ns->gen++;
3054 :
3055 29 : return 0;
3056 : }
3057 :
3058 : static void
3059 11 : nvmf_ns_reservation_release_reservation(struct spdk_nvmf_ns *ns)
3060 : {
3061 11 : ns->rtype = 0;
3062 11 : ns->crkey = 0;
3063 11 : ns->holder = NULL;
3064 11 : }
3065 :
3066 : /* release the reservation if the last registrant was removed */
3067 : static void
3068 19 : nvmf_ns_reservation_check_release_on_remove_registrant(struct spdk_nvmf_ns *ns,
3069 : struct spdk_nvmf_registrant *reg)
3070 : {
3071 : struct spdk_nvmf_registrant *next_reg;
3072 :
3073 : /* no reservation holder */
3074 19 : if (!ns->holder) {
3075 7 : assert(ns->rtype == 0);
3076 7 : return;
3077 : }
3078 :
3079 12 : next_reg = TAILQ_FIRST(&ns->registrants);
3080 12 : if (next_reg && nvmf_ns_reservation_all_registrants_type(ns)) {
3081 : /* the next valid registrant is the new holder now */
3082 2 : ns->holder = next_reg;
3083 10 : } else if (nvmf_ns_reservation_registrant_is_holder(ns, reg)) {
3084 : /* release the reservation */
3085 7 : nvmf_ns_reservation_release_reservation(ns);
3086 : }
3087 : }
3088 :
3089 : static void
3090 19 : nvmf_ns_reservation_remove_registrant(struct spdk_nvmf_ns *ns,
3091 : struct spdk_nvmf_registrant *reg)
3092 : {
3093 19 : TAILQ_REMOVE(&ns->registrants, reg, link);
3094 19 : nvmf_ns_reservation_check_release_on_remove_registrant(ns, reg);
3095 19 : free(reg);
3096 19 : ns->gen++;
3097 19 : return;
3098 : }
3099 :
3100 : static uint32_t
3101 0 : nvmf_ns_reservation_remove_registrants_by_key(struct spdk_nvmf_ns *ns,
3102 : uint64_t rkey)
3103 : {
3104 : struct spdk_nvmf_registrant *reg, *tmp;
3105 0 : uint32_t count = 0;
3106 :
3107 0 : TAILQ_FOREACH_SAFE(reg, &ns->registrants, link, tmp) {
3108 0 : if (reg->rkey == rkey) {
3109 0 : nvmf_ns_reservation_remove_registrant(ns, reg);
3110 0 : count++;
3111 : }
3112 : }
3113 0 : return count;
3114 : }
3115 :
3116 : static uint32_t
3117 1 : nvmf_ns_reservation_remove_all_other_registrants(struct spdk_nvmf_ns *ns,
3118 : struct spdk_nvmf_registrant *reg)
3119 : {
3120 : struct spdk_nvmf_registrant *reg_tmp, *reg_tmp2;
3121 1 : uint32_t count = 0;
3122 :
3123 3 : TAILQ_FOREACH_SAFE(reg_tmp, &ns->registrants, link, reg_tmp2) {
3124 2 : if (reg_tmp != reg) {
3125 1 : nvmf_ns_reservation_remove_registrant(ns, reg_tmp);
3126 1 : count++;
3127 : }
3128 : }
3129 1 : return count;
3130 : }
3131 :
3132 : static uint32_t
3133 9 : nvmf_ns_reservation_clear_all_registrants(struct spdk_nvmf_ns *ns)
3134 : {
3135 : struct spdk_nvmf_registrant *reg, *reg_tmp;
3136 9 : uint32_t count = 0;
3137 :
3138 20 : TAILQ_FOREACH_SAFE(reg, &ns->registrants, link, reg_tmp) {
3139 11 : nvmf_ns_reservation_remove_registrant(ns, reg);
3140 11 : count++;
3141 : }
3142 9 : return count;
3143 : }
3144 :
3145 : static void
3146 12 : nvmf_ns_reservation_acquire_reservation(struct spdk_nvmf_ns *ns, uint64_t rkey,
3147 : enum spdk_nvme_reservation_type rtype,
3148 : struct spdk_nvmf_registrant *holder)
3149 : {
3150 12 : ns->rtype = rtype;
3151 12 : ns->crkey = rkey;
3152 12 : assert(ns->holder == NULL);
3153 12 : ns->holder = holder;
3154 12 : }
3155 :
3156 : static bool
3157 45 : nvmf_ns_reservation_register(struct spdk_nvmf_ns *ns,
3158 : struct spdk_nvmf_ctrlr *ctrlr,
3159 : struct spdk_nvmf_request *req)
3160 : {
3161 45 : struct spdk_nvme_reservation_register_data key = { 0 };
3162 45 : struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd;
3163 : uint8_t rrega, iekey, cptpl, rtype;
3164 : struct spdk_nvmf_registrant *reg;
3165 45 : uint8_t status = SPDK_NVME_SC_SUCCESS;
3166 45 : bool update_sgroup = false;
3167 45 : struct spdk_uuid hostid_list[SPDK_NVMF_MAX_NUM_REGISTRANTS];
3168 45 : uint32_t num_hostid = 0;
3169 : int rc;
3170 :
3171 45 : rrega = cmd->cdw10_bits.resv_register.rrega;
3172 45 : iekey = cmd->cdw10_bits.resv_register.iekey;
3173 45 : cptpl = cmd->cdw10_bits.resv_register.cptpl;
3174 :
3175 45 : if (req->iovcnt > 0 && req->length >= sizeof(key)) {
3176 45 : struct spdk_iov_xfer ix;
3177 45 : spdk_iov_xfer_init(&ix, req->iov, req->iovcnt);
3178 45 : spdk_iov_xfer_to_buf(&ix, &key, sizeof(key));
3179 : } else {
3180 0 : SPDK_ERRLOG("No key provided. Failing request.\n");
3181 0 : status = SPDK_NVME_SC_INVALID_FIELD;
3182 0 : goto exit;
3183 : }
3184 :
3185 45 : SPDK_DEBUGLOG(nvmf, "REGISTER: RREGA %u, IEKEY %u, CPTPL %u, "
3186 : "NRKEY 0x%"PRIx64", NRKEY 0x%"PRIx64"\n",
3187 : rrega, iekey, cptpl, key.crkey, key.nrkey);
3188 :
3189 45 : if (cptpl == SPDK_NVME_RESERVE_PTPL_CLEAR_POWER_ON) {
3190 : /* True to OFF state, and need to be updated in the configuration file */
3191 1 : if (ns->ptpl_activated) {
3192 1 : ns->ptpl_activated = 0;
3193 1 : update_sgroup = true;
3194 : }
3195 44 : } else if (cptpl == SPDK_NVME_RESERVE_PTPL_PERSIST_POWER_LOSS) {
3196 4 : if (!nvmf_ns_is_ptpl_capable(ns)) {
3197 1 : status = SPDK_NVME_SC_INVALID_FIELD;
3198 1 : goto exit;
3199 3 : } else if (ns->ptpl_activated == 0) {
3200 3 : ns->ptpl_activated = 1;
3201 3 : update_sgroup = true;
3202 : }
3203 : }
3204 :
3205 : /* current Host Identifier has registrant or not */
3206 44 : reg = nvmf_ns_reservation_get_registrant(ns, &ctrlr->hostid);
3207 :
3208 44 : switch (rrega) {
3209 36 : case SPDK_NVME_RESERVE_REGISTER_KEY:
3210 36 : if (!reg) {
3211 : /* register new controller */
3212 27 : if (key.nrkey == 0) {
3213 0 : SPDK_ERRLOG("Can't register zeroed new key\n");
3214 0 : status = SPDK_NVME_SC_INVALID_FIELD;
3215 0 : goto exit;
3216 : }
3217 27 : rc = nvmf_ns_reservation_add_registrant(ns, ctrlr, key.nrkey);
3218 27 : if (rc < 0) {
3219 0 : status = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR;
3220 0 : goto exit;
3221 : }
3222 27 : update_sgroup = true;
3223 : } else {
3224 : /* register with same key is not an error */
3225 9 : if (reg->rkey != key.nrkey) {
3226 8 : SPDK_ERRLOG("The same host already register a "
3227 : "key with 0x%"PRIx64"\n",
3228 : reg->rkey);
3229 8 : status = SPDK_NVME_SC_RESERVATION_CONFLICT;
3230 8 : goto exit;
3231 : }
3232 : }
3233 28 : break;
3234 4 : case SPDK_NVME_RESERVE_UNREGISTER_KEY:
3235 4 : if (!reg || (!iekey && reg->rkey != key.crkey)) {
3236 0 : SPDK_ERRLOG("No registrant or current key doesn't match "
3237 : "with existing registrant key\n");
3238 0 : status = SPDK_NVME_SC_RESERVATION_CONFLICT;
3239 0 : goto exit;
3240 : }
3241 :
3242 4 : rtype = ns->rtype;
3243 4 : num_hostid = nvmf_ns_reservation_get_all_other_hostid(ns, hostid_list,
3244 : SPDK_NVMF_MAX_NUM_REGISTRANTS,
3245 : &ctrlr->hostid);
3246 :
3247 4 : nvmf_ns_reservation_remove_registrant(ns, reg);
3248 :
3249 4 : if (!ns->rtype && num_hostid && (rtype == SPDK_NVME_RESERVE_WRITE_EXCLUSIVE_REG_ONLY ||
3250 : rtype == SPDK_NVME_RESERVE_EXCLUSIVE_ACCESS_REG_ONLY)) {
3251 1 : nvmf_subsystem_gen_ctrlr_notification(ns->subsystem, ns,
3252 : hostid_list,
3253 : num_hostid,
3254 : SPDK_NVME_RESERVATION_RELEASED);
3255 : }
3256 4 : update_sgroup = true;
3257 4 : break;
3258 4 : case SPDK_NVME_RESERVE_REPLACE_KEY:
3259 4 : if (key.nrkey == 0) {
3260 0 : SPDK_ERRLOG("Can't register zeroed new key\n");
3261 0 : status = SPDK_NVME_SC_INVALID_FIELD;
3262 0 : goto exit;
3263 : }
3264 : /* Registrant exists */
3265 4 : if (reg) {
3266 2 : if (!iekey && reg->rkey != key.crkey) {
3267 0 : SPDK_ERRLOG("Current key doesn't match "
3268 : "existing registrant key\n");
3269 0 : status = SPDK_NVME_SC_RESERVATION_CONFLICT;
3270 0 : goto exit;
3271 : }
3272 2 : if (reg->rkey == key.nrkey) {
3273 0 : goto exit;
3274 : }
3275 2 : reg->rkey = key.nrkey;
3276 2 : } else if (iekey) { /* No registrant but IEKEY is set */
3277 : /* new registrant */
3278 1 : rc = nvmf_ns_reservation_add_registrant(ns, ctrlr, key.nrkey);
3279 1 : if (rc < 0) {
3280 0 : status = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR;
3281 0 : goto exit;
3282 : }
3283 : } else { /* No registrant */
3284 1 : SPDK_ERRLOG("No registrant\n");
3285 1 : status = SPDK_NVME_SC_RESERVATION_CONFLICT;
3286 1 : goto exit;
3287 :
3288 : }
3289 3 : update_sgroup = true;
3290 3 : break;
3291 0 : default:
3292 0 : status = SPDK_NVME_SC_INVALID_FIELD;
3293 0 : goto exit;
3294 : }
3295 :
3296 45 : exit:
3297 45 : req->rsp->nvme_cpl.status.sct = SPDK_NVME_SCT_GENERIC;
3298 45 : req->rsp->nvme_cpl.status.sc = status;
3299 45 : return update_sgroup;
3300 : }
3301 :
3302 : static bool
3303 13 : nvmf_ns_reservation_acquire(struct spdk_nvmf_ns *ns,
3304 : struct spdk_nvmf_ctrlr *ctrlr,
3305 : struct spdk_nvmf_request *req)
3306 : {
3307 13 : struct spdk_nvme_reservation_acquire_data key = { 0 };
3308 13 : struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd;
3309 : uint8_t racqa, iekey, rtype;
3310 : struct spdk_nvmf_registrant *reg;
3311 13 : bool all_regs = false;
3312 13 : uint32_t count = 0;
3313 13 : bool update_sgroup = true;
3314 13 : struct spdk_uuid hostid_list[SPDK_NVMF_MAX_NUM_REGISTRANTS];
3315 13 : uint32_t num_hostid = 0;
3316 13 : struct spdk_uuid new_hostid_list[SPDK_NVMF_MAX_NUM_REGISTRANTS];
3317 13 : uint32_t new_num_hostid = 0;
3318 13 : bool reservation_released = false;
3319 13 : uint8_t status = SPDK_NVME_SC_SUCCESS;
3320 :
3321 13 : racqa = cmd->cdw10_bits.resv_acquire.racqa;
3322 13 : iekey = cmd->cdw10_bits.resv_acquire.iekey;
3323 13 : rtype = cmd->cdw10_bits.resv_acquire.rtype;
3324 :
3325 13 : if (req->iovcnt > 0 && req->length >= sizeof(key)) {
3326 13 : struct spdk_iov_xfer ix;
3327 13 : spdk_iov_xfer_init(&ix, req->iov, req->iovcnt);
3328 13 : spdk_iov_xfer_to_buf(&ix, &key, sizeof(key));
3329 : } else {
3330 0 : SPDK_ERRLOG("No key provided. Failing request.\n");
3331 0 : status = SPDK_NVME_SC_INVALID_FIELD;
3332 0 : goto exit;
3333 : }
3334 :
3335 13 : SPDK_DEBUGLOG(nvmf, "ACQUIRE: RACQA %u, IEKEY %u, RTYPE %u, "
3336 : "NRKEY 0x%"PRIx64", PRKEY 0x%"PRIx64"\n",
3337 : racqa, iekey, rtype, key.crkey, key.prkey);
3338 :
3339 13 : if (iekey || rtype > SPDK_NVME_RESERVE_EXCLUSIVE_ACCESS_ALL_REGS) {
3340 0 : SPDK_ERRLOG("Ignore existing key field set to 1\n");
3341 0 : status = SPDK_NVME_SC_INVALID_FIELD;
3342 0 : update_sgroup = false;
3343 0 : goto exit;
3344 : }
3345 :
3346 13 : reg = nvmf_ns_reservation_get_registrant(ns, &ctrlr->hostid);
3347 : /* must be registrant and CRKEY must match */
3348 13 : if (!reg || reg->rkey != key.crkey) {
3349 0 : SPDK_ERRLOG("No registrant or current key doesn't match "
3350 : "with existing registrant key\n");
3351 0 : status = SPDK_NVME_SC_RESERVATION_CONFLICT;
3352 0 : update_sgroup = false;
3353 0 : goto exit;
3354 : }
3355 :
3356 13 : all_regs = nvmf_ns_reservation_all_registrants_type(ns);
3357 :
3358 13 : switch (racqa) {
3359 10 : case SPDK_NVME_RESERVE_ACQUIRE:
3360 : /* it's not an error for the holder to acquire same reservation type again */
3361 10 : if (nvmf_ns_reservation_registrant_is_holder(ns, reg) && ns->rtype == rtype) {
3362 : /* do nothing */
3363 0 : update_sgroup = false;
3364 10 : } else if (ns->holder == NULL) {
3365 : /* first time to acquire the reservation */
3366 10 : nvmf_ns_reservation_acquire_reservation(ns, key.crkey, rtype, reg);
3367 : } else {
3368 0 : SPDK_ERRLOG("Invalid rtype or current registrant is not holder\n");
3369 0 : status = SPDK_NVME_SC_RESERVATION_CONFLICT;
3370 0 : update_sgroup = false;
3371 0 : goto exit;
3372 : }
3373 10 : break;
3374 3 : case SPDK_NVME_RESERVE_PREEMPT:
3375 : /* no reservation holder */
3376 3 : if (!ns->holder) {
3377 : /* unregister with PRKEY */
3378 0 : nvmf_ns_reservation_remove_registrants_by_key(ns, key.prkey);
3379 0 : break;
3380 : }
3381 3 : num_hostid = nvmf_ns_reservation_get_all_other_hostid(ns, hostid_list,
3382 : SPDK_NVMF_MAX_NUM_REGISTRANTS,
3383 : &ctrlr->hostid);
3384 :
3385 : /* only 1 reservation holder and reservation key is valid */
3386 3 : if (!all_regs) {
3387 : /* preempt itself */
3388 2 : if (nvmf_ns_reservation_registrant_is_holder(ns, reg) &&
3389 0 : ns->crkey == key.prkey) {
3390 0 : ns->rtype = rtype;
3391 0 : reservation_released = true;
3392 0 : break;
3393 : }
3394 :
3395 2 : if (ns->crkey == key.prkey) {
3396 2 : nvmf_ns_reservation_remove_registrant(ns, ns->holder);
3397 2 : nvmf_ns_reservation_acquire_reservation(ns, key.crkey, rtype, reg);
3398 2 : reservation_released = true;
3399 0 : } else if (key.prkey != 0) {
3400 0 : nvmf_ns_reservation_remove_registrants_by_key(ns, key.prkey);
3401 : } else {
3402 : /* PRKEY is zero */
3403 0 : SPDK_ERRLOG("Current PRKEY is zero\n");
3404 0 : status = SPDK_NVME_SC_RESERVATION_CONFLICT;
3405 0 : update_sgroup = false;
3406 0 : goto exit;
3407 : }
3408 : } else {
3409 : /* release all other registrants except for the current one */
3410 1 : if (key.prkey == 0) {
3411 1 : nvmf_ns_reservation_remove_all_other_registrants(ns, reg);
3412 1 : assert(ns->holder == reg);
3413 : } else {
3414 0 : count = nvmf_ns_reservation_remove_registrants_by_key(ns, key.prkey);
3415 0 : if (count == 0) {
3416 0 : SPDK_ERRLOG("PRKEY doesn't match any registrant\n");
3417 0 : status = SPDK_NVME_SC_RESERVATION_CONFLICT;
3418 0 : update_sgroup = false;
3419 0 : goto exit;
3420 : }
3421 : }
3422 : }
3423 3 : break;
3424 0 : default:
3425 0 : status = SPDK_NVME_SC_INVALID_FIELD;
3426 0 : update_sgroup = false;
3427 0 : break;
3428 : }
3429 :
3430 13 : exit:
3431 13 : if (update_sgroup && racqa == SPDK_NVME_RESERVE_PREEMPT) {
3432 3 : new_num_hostid = nvmf_ns_reservation_get_all_other_hostid(ns, new_hostid_list,
3433 : SPDK_NVMF_MAX_NUM_REGISTRANTS,
3434 : &ctrlr->hostid);
3435 : /* Preempt notification occurs on the unregistered controllers
3436 : * other than the controller who issued the command.
3437 : */
3438 3 : num_hostid = nvmf_ns_reservation_get_unregistered_hostid(hostid_list,
3439 : num_hostid,
3440 : new_hostid_list,
3441 : new_num_hostid);
3442 3 : if (num_hostid) {
3443 3 : nvmf_subsystem_gen_ctrlr_notification(ns->subsystem, ns,
3444 : hostid_list,
3445 : num_hostid,
3446 : SPDK_NVME_REGISTRATION_PREEMPTED);
3447 :
3448 : }
3449 : /* Reservation released notification occurs on the
3450 : * controllers which are the remaining registrants other than
3451 : * the controller who issued the command.
3452 : */
3453 3 : if (reservation_released && new_num_hostid) {
3454 2 : nvmf_subsystem_gen_ctrlr_notification(ns->subsystem, ns,
3455 : new_hostid_list,
3456 : new_num_hostid,
3457 : SPDK_NVME_RESERVATION_RELEASED);
3458 :
3459 : }
3460 : }
3461 13 : req->rsp->nvme_cpl.status.sct = SPDK_NVME_SCT_GENERIC;
3462 13 : req->rsp->nvme_cpl.status.sc = status;
3463 13 : return update_sgroup;
3464 : }
3465 :
3466 : static bool
3467 6 : nvmf_ns_reservation_release(struct spdk_nvmf_ns *ns,
3468 : struct spdk_nvmf_ctrlr *ctrlr,
3469 : struct spdk_nvmf_request *req)
3470 : {
3471 6 : struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd;
3472 : uint8_t rrela, iekey, rtype;
3473 : struct spdk_nvmf_registrant *reg;
3474 6 : uint64_t crkey = 0;
3475 6 : uint8_t status = SPDK_NVME_SC_SUCCESS;
3476 6 : bool update_sgroup = true;
3477 6 : struct spdk_uuid hostid_list[SPDK_NVMF_MAX_NUM_REGISTRANTS];
3478 6 : uint32_t num_hostid = 0;
3479 :
3480 6 : rrela = cmd->cdw10_bits.resv_release.rrela;
3481 6 : iekey = cmd->cdw10_bits.resv_release.iekey;
3482 6 : rtype = cmd->cdw10_bits.resv_release.rtype;
3483 :
3484 6 : if (req->iovcnt > 0 && req->length >= sizeof(crkey)) {
3485 6 : struct spdk_iov_xfer ix;
3486 6 : spdk_iov_xfer_init(&ix, req->iov, req->iovcnt);
3487 6 : spdk_iov_xfer_to_buf(&ix, &crkey, sizeof(crkey));
3488 : } else {
3489 0 : SPDK_ERRLOG("No key provided. Failing request.\n");
3490 0 : status = SPDK_NVME_SC_INVALID_FIELD;
3491 0 : goto exit;
3492 : }
3493 :
3494 6 : SPDK_DEBUGLOG(nvmf, "RELEASE: RRELA %u, IEKEY %u, RTYPE %u, "
3495 : "CRKEY 0x%"PRIx64"\n", rrela, iekey, rtype, crkey);
3496 :
3497 6 : if (iekey) {
3498 0 : SPDK_ERRLOG("Ignore existing key field set to 1\n");
3499 0 : status = SPDK_NVME_SC_INVALID_FIELD;
3500 0 : update_sgroup = false;
3501 0 : goto exit;
3502 : }
3503 :
3504 6 : reg = nvmf_ns_reservation_get_registrant(ns, &ctrlr->hostid);
3505 6 : if (!reg || reg->rkey != crkey) {
3506 0 : SPDK_ERRLOG("No registrant or current key doesn't match "
3507 : "with existing registrant key\n");
3508 0 : status = SPDK_NVME_SC_RESERVATION_CONFLICT;
3509 0 : update_sgroup = false;
3510 0 : goto exit;
3511 : }
3512 :
3513 6 : num_hostid = nvmf_ns_reservation_get_all_other_hostid(ns, hostid_list,
3514 : SPDK_NVMF_MAX_NUM_REGISTRANTS,
3515 : &ctrlr->hostid);
3516 :
3517 6 : switch (rrela) {
3518 4 : case SPDK_NVME_RESERVE_RELEASE:
3519 4 : if (!ns->holder) {
3520 0 : SPDK_DEBUGLOG(nvmf, "RELEASE: no holder\n");
3521 0 : update_sgroup = false;
3522 0 : goto exit;
3523 : }
3524 4 : if (ns->rtype != rtype) {
3525 0 : SPDK_ERRLOG("Type doesn't match\n");
3526 0 : status = SPDK_NVME_SC_INVALID_FIELD;
3527 0 : update_sgroup = false;
3528 0 : goto exit;
3529 : }
3530 4 : if (!nvmf_ns_reservation_registrant_is_holder(ns, reg)) {
3531 : /* not the reservation holder, this isn't an error */
3532 0 : update_sgroup = false;
3533 0 : goto exit;
3534 : }
3535 :
3536 4 : rtype = ns->rtype;
3537 4 : nvmf_ns_reservation_release_reservation(ns);
3538 :
3539 4 : if (num_hostid && rtype != SPDK_NVME_RESERVE_WRITE_EXCLUSIVE &&
3540 : rtype != SPDK_NVME_RESERVE_EXCLUSIVE_ACCESS) {
3541 2 : nvmf_subsystem_gen_ctrlr_notification(ns->subsystem, ns,
3542 : hostid_list,
3543 : num_hostid,
3544 : SPDK_NVME_RESERVATION_RELEASED);
3545 : }
3546 4 : break;
3547 2 : case SPDK_NVME_RESERVE_CLEAR:
3548 2 : nvmf_ns_reservation_clear_all_registrants(ns);
3549 2 : if (num_hostid) {
3550 2 : nvmf_subsystem_gen_ctrlr_notification(ns->subsystem, ns,
3551 : hostid_list,
3552 : num_hostid,
3553 : SPDK_NVME_RESERVATION_PREEMPTED);
3554 : }
3555 2 : break;
3556 0 : default:
3557 0 : status = SPDK_NVME_SC_INVALID_FIELD;
3558 0 : update_sgroup = false;
3559 0 : goto exit;
3560 : }
3561 :
3562 6 : exit:
3563 6 : req->rsp->nvme_cpl.status.sct = SPDK_NVME_SCT_GENERIC;
3564 6 : req->rsp->nvme_cpl.status.sc = status;
3565 6 : return update_sgroup;
3566 : }
3567 :
3568 : static void
3569 3 : nvmf_ns_reservation_report(struct spdk_nvmf_ns *ns,
3570 : struct spdk_nvmf_ctrlr *ctrlr,
3571 : struct spdk_nvmf_request *req)
3572 : {
3573 3 : struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd;
3574 : struct spdk_nvmf_registrant *reg, *tmp;
3575 3 : struct spdk_nvme_reservation_status_extended_data status_data = { 0 };
3576 3 : struct spdk_iov_xfer ix;
3577 : uint32_t transfer_len;
3578 3 : uint32_t regctl = 0;
3579 3 : uint8_t status = SPDK_NVME_SC_SUCCESS;
3580 :
3581 3 : if (req->iovcnt == 0) {
3582 0 : SPDK_ERRLOG("No data transfer specified for request. "
3583 : " Unable to transfer back response.\n");
3584 0 : status = SPDK_NVME_SC_INVALID_FIELD;
3585 0 : goto exit;
3586 : }
3587 :
3588 3 : if (!cmd->cdw11_bits.resv_report.eds) {
3589 1 : SPDK_ERRLOG("NVMeoF uses extended controller data structure, "
3590 : "please set EDS bit in cdw11 and try again\n");
3591 1 : status = SPDK_NVME_SC_HOSTID_INCONSISTENT_FORMAT;
3592 1 : goto exit;
3593 : }
3594 :
3595 : /* Number of Dwords of the Reservation Status data structure to transfer */
3596 2 : transfer_len = (cmd->cdw10 + 1) * sizeof(uint32_t);
3597 :
3598 2 : if (transfer_len < sizeof(struct spdk_nvme_reservation_status_extended_data)) {
3599 1 : status = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR;
3600 1 : goto exit;
3601 : }
3602 :
3603 1 : spdk_iov_xfer_init(&ix, req->iov, req->iovcnt);
3604 :
3605 1 : status_data.data.gen = ns->gen;
3606 1 : status_data.data.rtype = ns->rtype;
3607 1 : status_data.data.ptpls = ns->ptpl_activated;
3608 :
3609 3 : TAILQ_FOREACH_SAFE(reg, &ns->registrants, link, tmp) {
3610 2 : regctl++;
3611 : }
3612 :
3613 : /*
3614 : * We report the number of registrants as per the spec here, even if
3615 : * the iov isn't big enough to contain them all. In that case, the
3616 : * spdk_iov_xfer_from_buf() won't actually copy any of the remaining
3617 : * data; as it keeps track of the iov cursor itself, it's simplest to
3618 : * just walk the entire list anyway.
3619 : */
3620 1 : status_data.data.regctl = regctl;
3621 :
3622 1 : spdk_iov_xfer_from_buf(&ix, &status_data, sizeof(status_data));
3623 :
3624 3 : TAILQ_FOREACH_SAFE(reg, &ns->registrants, link, tmp) {
3625 2 : struct spdk_nvme_registered_ctrlr_extended_data ctrlr_data = { 0 };
3626 :
3627 : /* Set to 0xffffh for dynamic controller */
3628 2 : ctrlr_data.cntlid = 0xffff;
3629 2 : ctrlr_data.rcsts.status = (ns->holder == reg) ? true : false;
3630 2 : ctrlr_data.rkey = reg->rkey;
3631 2 : spdk_uuid_copy((struct spdk_uuid *)ctrlr_data.hostid, ®->hostid);
3632 :
3633 2 : spdk_iov_xfer_from_buf(&ix, &ctrlr_data, sizeof(ctrlr_data));
3634 : }
3635 :
3636 3 : exit:
3637 3 : req->rsp->nvme_cpl.status.sct = SPDK_NVME_SCT_GENERIC;
3638 3 : req->rsp->nvme_cpl.status.sc = status;
3639 3 : return;
3640 : }
3641 :
3642 : static void
3643 0 : nvmf_ns_reservation_complete(void *ctx)
3644 : {
3645 0 : struct spdk_nvmf_request *req = ctx;
3646 :
3647 0 : spdk_nvmf_request_complete(req);
3648 0 : }
3649 :
3650 : static void
3651 0 : _nvmf_ns_reservation_update_done(struct spdk_nvmf_subsystem *subsystem,
3652 : void *cb_arg, int status)
3653 : {
3654 0 : struct spdk_nvmf_request *req = (struct spdk_nvmf_request *)cb_arg;
3655 0 : struct spdk_nvmf_poll_group *group = req->qpair->group;
3656 :
3657 0 : spdk_thread_send_msg(group->thread, nvmf_ns_reservation_complete, req);
3658 0 : }
3659 :
3660 : void
3661 0 : nvmf_ns_reservation_request(void *ctx)
3662 : {
3663 0 : struct spdk_nvmf_request *req = (struct spdk_nvmf_request *)ctx;
3664 0 : struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd;
3665 0 : struct spdk_nvmf_ctrlr *ctrlr = req->qpair->ctrlr;
3666 : uint32_t nsid;
3667 : struct spdk_nvmf_ns *ns;
3668 0 : bool update_sgroup = false;
3669 0 : int status = 0;
3670 :
3671 0 : nsid = cmd->nsid;
3672 0 : ns = _nvmf_subsystem_get_ns(ctrlr->subsys, nsid);
3673 0 : assert(ns != NULL);
3674 :
3675 0 : switch (cmd->opc) {
3676 0 : case SPDK_NVME_OPC_RESERVATION_REGISTER:
3677 0 : update_sgroup = nvmf_ns_reservation_register(ns, ctrlr, req);
3678 0 : break;
3679 0 : case SPDK_NVME_OPC_RESERVATION_ACQUIRE:
3680 0 : update_sgroup = nvmf_ns_reservation_acquire(ns, ctrlr, req);
3681 0 : break;
3682 0 : case SPDK_NVME_OPC_RESERVATION_RELEASE:
3683 0 : update_sgroup = nvmf_ns_reservation_release(ns, ctrlr, req);
3684 0 : break;
3685 0 : case SPDK_NVME_OPC_RESERVATION_REPORT:
3686 0 : nvmf_ns_reservation_report(ns, ctrlr, req);
3687 0 : break;
3688 0 : default:
3689 0 : break;
3690 : }
3691 :
3692 : /* update reservation information to subsystem's poll group */
3693 0 : if (update_sgroup) {
3694 0 : if (ns->ptpl_activated || cmd->opc == SPDK_NVME_OPC_RESERVATION_REGISTER) {
3695 0 : if (nvmf_ns_update_reservation_info(ns) != 0) {
3696 0 : req->rsp->nvme_cpl.status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR;
3697 : }
3698 : }
3699 0 : status = nvmf_subsystem_update_ns(ctrlr->subsys, _nvmf_ns_reservation_update_done, req);
3700 0 : if (status == 0) {
3701 0 : return;
3702 : }
3703 : }
3704 :
3705 0 : _nvmf_ns_reservation_update_done(ctrlr->subsys, req, status);
3706 : }
3707 :
3708 : static bool
3709 11 : nvmf_ns_is_ptpl_capable_json(const struct spdk_nvmf_ns *ns)
3710 : {
3711 11 : return ns->ptpl_file != NULL;
3712 : }
3713 :
3714 : static struct spdk_nvmf_ns_reservation_ops g_reservation_ops = {
3715 : .is_ptpl_capable = nvmf_ns_is_ptpl_capable_json,
3716 : .update = nvmf_ns_reservation_update_json,
3717 : .load = nvmf_ns_reservation_load_json,
3718 : };
3719 :
3720 : bool
3721 15 : nvmf_ns_is_ptpl_capable(const struct spdk_nvmf_ns *ns)
3722 : {
3723 15 : return g_reservation_ops.is_ptpl_capable(ns);
3724 : }
3725 :
3726 : static int
3727 7 : nvmf_ns_reservation_update(const struct spdk_nvmf_ns *ns,
3728 : const struct spdk_nvmf_reservation_info *info)
3729 : {
3730 7 : return g_reservation_ops.update(ns, info);
3731 : }
3732 :
3733 : static int
3734 6 : nvmf_ns_reservation_load(const struct spdk_nvmf_ns *ns, struct spdk_nvmf_reservation_info *info)
3735 : {
3736 6 : return g_reservation_ops.load(ns, info);
3737 : }
3738 :
3739 : void
3740 1 : spdk_nvmf_set_custom_ns_reservation_ops(const struct spdk_nvmf_ns_reservation_ops *ops)
3741 : {
3742 1 : g_reservation_ops = *ops;
3743 1 : }
3744 :
3745 : int
3746 0 : spdk_nvmf_subsystem_set_ana_reporting(struct spdk_nvmf_subsystem *subsystem,
3747 : bool ana_reporting)
3748 : {
3749 0 : if (subsystem->state != SPDK_NVMF_SUBSYSTEM_INACTIVE) {
3750 0 : return -EAGAIN;
3751 : }
3752 :
3753 0 : subsystem->flags.ana_reporting = ana_reporting;
3754 :
3755 0 : return 0;
3756 : }
3757 :
3758 : bool
3759 0 : spdk_nvmf_subsystem_get_ana_reporting(struct spdk_nvmf_subsystem *subsystem)
3760 : {
3761 0 : return subsystem->flags.ana_reporting;
3762 : }
3763 :
3764 : struct subsystem_listener_update_ctx {
3765 : struct spdk_nvmf_subsystem_listener *listener;
3766 :
3767 : spdk_nvmf_tgt_subsystem_listen_done_fn cb_fn;
3768 : void *cb_arg;
3769 : };
3770 :
3771 : static void
3772 0 : subsystem_listener_update_done(struct spdk_io_channel_iter *i, int status)
3773 : {
3774 0 : struct subsystem_listener_update_ctx *ctx = spdk_io_channel_iter_get_ctx(i);
3775 :
3776 0 : if (ctx->cb_fn) {
3777 0 : ctx->cb_fn(ctx->cb_arg, status);
3778 : }
3779 0 : free(ctx);
3780 0 : }
3781 :
3782 : static void
3783 0 : subsystem_listener_update_on_pg(struct spdk_io_channel_iter *i)
3784 : {
3785 0 : struct subsystem_listener_update_ctx *ctx = spdk_io_channel_iter_get_ctx(i);
3786 : struct spdk_nvmf_subsystem_listener *listener;
3787 : struct spdk_nvmf_poll_group *group;
3788 : struct spdk_nvmf_ctrlr *ctrlr;
3789 :
3790 0 : listener = ctx->listener;
3791 0 : group = spdk_io_channel_get_ctx(spdk_io_channel_iter_get_channel(i));
3792 :
3793 0 : TAILQ_FOREACH(ctrlr, &listener->subsystem->ctrlrs, link) {
3794 0 : if (ctrlr->thread != spdk_get_thread()) {
3795 0 : continue;
3796 : }
3797 :
3798 0 : if (ctrlr->admin_qpair && ctrlr->admin_qpair->group == group && ctrlr->listener == listener) {
3799 0 : nvmf_ctrlr_async_event_ana_change_notice(ctrlr);
3800 : }
3801 : }
3802 :
3803 0 : spdk_for_each_channel_continue(i, 0);
3804 0 : }
3805 :
3806 : void
3807 0 : spdk_nvmf_subsystem_set_ana_state(struct spdk_nvmf_subsystem *subsystem,
3808 : const struct spdk_nvme_transport_id *trid,
3809 : enum spdk_nvme_ana_state ana_state, uint32_t anagrpid,
3810 : spdk_nvmf_tgt_subsystem_listen_done_fn cb_fn, void *cb_arg)
3811 : {
3812 : struct spdk_nvmf_subsystem_listener *listener;
3813 : struct subsystem_listener_update_ctx *ctx;
3814 : uint32_t i;
3815 :
3816 0 : assert(cb_fn != NULL);
3817 0 : assert(subsystem->state == SPDK_NVMF_SUBSYSTEM_INACTIVE ||
3818 : subsystem->state == SPDK_NVMF_SUBSYSTEM_PAUSED);
3819 :
3820 0 : if (!subsystem->flags.ana_reporting) {
3821 0 : SPDK_ERRLOG("ANA reporting is disabled\n");
3822 0 : cb_fn(cb_arg, -EINVAL);
3823 0 : return;
3824 : }
3825 :
3826 : /* ANA Change state is not used, ANA Persistent Loss state
3827 : * is not supported yet.
3828 : */
3829 0 : if (!(ana_state == SPDK_NVME_ANA_OPTIMIZED_STATE ||
3830 : ana_state == SPDK_NVME_ANA_NON_OPTIMIZED_STATE ||
3831 : ana_state == SPDK_NVME_ANA_INACCESSIBLE_STATE)) {
3832 0 : SPDK_ERRLOG("ANA state %d is not supported\n", ana_state);
3833 0 : cb_fn(cb_arg, -ENOTSUP);
3834 0 : return;
3835 : }
3836 :
3837 0 : if (anagrpid > subsystem->max_nsid) {
3838 0 : SPDK_ERRLOG("ANA group ID %" PRIu32 " is more than maximum\n", anagrpid);
3839 0 : cb_fn(cb_arg, -EINVAL);
3840 0 : return;
3841 : }
3842 :
3843 0 : listener = nvmf_subsystem_find_listener(subsystem, trid);
3844 0 : if (!listener) {
3845 0 : SPDK_ERRLOG("Unable to find listener.\n");
3846 0 : cb_fn(cb_arg, -EINVAL);
3847 0 : return;
3848 : }
3849 :
3850 0 : if (anagrpid != 0 && listener->ana_state[anagrpid - 1] == ana_state) {
3851 0 : cb_fn(cb_arg, 0);
3852 0 : return;
3853 : }
3854 :
3855 0 : ctx = calloc(1, sizeof(*ctx));
3856 0 : if (!ctx) {
3857 0 : SPDK_ERRLOG("Unable to allocate context\n");
3858 0 : cb_fn(cb_arg, -ENOMEM);
3859 0 : return;
3860 : }
3861 :
3862 0 : for (i = 1; i <= subsystem->max_nsid; i++) {
3863 0 : if (anagrpid == 0 || i == anagrpid) {
3864 0 : listener->ana_state[i - 1] = ana_state;
3865 : }
3866 : }
3867 0 : listener->ana_state_change_count++;
3868 :
3869 0 : ctx->listener = listener;
3870 0 : ctx->cb_fn = cb_fn;
3871 0 : ctx->cb_arg = cb_arg;
3872 :
3873 0 : spdk_for_each_channel(subsystem->tgt,
3874 : subsystem_listener_update_on_pg,
3875 : ctx,
3876 : subsystem_listener_update_done);
3877 : }
3878 :
3879 : int
3880 0 : spdk_nvmf_subsystem_get_ana_state(struct spdk_nvmf_subsystem *subsystem,
3881 : const struct spdk_nvme_transport_id *trid,
3882 : uint32_t anagrpid,
3883 : enum spdk_nvme_ana_state *ana_state)
3884 : {
3885 0 : assert(ana_state != NULL);
3886 :
3887 : struct spdk_nvmf_subsystem_listener *listener;
3888 :
3889 0 : if (!subsystem->flags.ana_reporting) {
3890 0 : SPDK_ERRLOG("ANA reporting is disabled\n");
3891 0 : return -EINVAL;
3892 : }
3893 :
3894 0 : if (anagrpid <= 0 || anagrpid > subsystem->max_nsid) {
3895 0 : SPDK_ERRLOG("ANA group ID %" PRIu32 " is invalid\n", anagrpid);
3896 0 : return -EINVAL;
3897 : }
3898 :
3899 0 : listener = nvmf_subsystem_find_listener(subsystem, trid);
3900 0 : if (!listener) {
3901 0 : SPDK_ERRLOG("Unable to find listener.\n");
3902 0 : return -EINVAL;
3903 : }
3904 :
3905 0 : *ana_state = listener->ana_state[anagrpid - 1];
3906 0 : return 0;
3907 : }
3908 :
3909 : bool
3910 14 : spdk_nvmf_subsystem_is_discovery(struct spdk_nvmf_subsystem *subsystem)
3911 : {
3912 28 : return subsystem->subtype == SPDK_NVMF_SUBTYPE_DISCOVERY_CURRENT ||
3913 14 : subsystem->subtype == SPDK_NVMF_SUBTYPE_DISCOVERY;
3914 : }
3915 :
3916 : bool
3917 0 : nvmf_nqn_is_discovery(const char *nqn)
3918 : {
3919 0 : return strcmp(nqn, SPDK_NVMF_DISCOVERY_NQN) == 0;
3920 : }
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