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) 2021-2024 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
5 : * Copyright (c) 2022 Dell Inc, or its subsidiaries. All rights reserved.
6 : */
7 :
8 : #include "spdk/stdinc.h"
9 :
10 : #include "bdev_nvme.h"
11 :
12 : #include "spdk/accel.h"
13 : #include "spdk/config.h"
14 : #include "spdk/endian.h"
15 : #include "spdk/bdev.h"
16 : #include "spdk/json.h"
17 : #include "spdk/keyring.h"
18 : #include "spdk/likely.h"
19 : #include "spdk/nvme.h"
20 : #include "spdk/nvme_ocssd.h"
21 : #include "spdk/nvme_zns.h"
22 : #include "spdk/opal.h"
23 : #include "spdk/thread.h"
24 : #include "spdk/trace.h"
25 : #include "spdk/string.h"
26 : #include "spdk/util.h"
27 : #include "spdk/uuid.h"
28 :
29 : #include "spdk/bdev_module.h"
30 : #include "spdk/log.h"
31 :
32 : #include "spdk_internal/usdt.h"
33 : #include "spdk_internal/trace_defs.h"
34 :
35 : #define SPDK_BDEV_NVME_DEFAULT_DELAY_CMD_SUBMIT true
36 : #define SPDK_BDEV_NVME_DEFAULT_KEEP_ALIVE_TIMEOUT_IN_MS (10000)
37 :
38 : #define NSID_STR_LEN 10
39 :
40 : #define SPDK_CONTROLLER_NAME_MAX 512
41 :
42 : static int bdev_nvme_config_json(struct spdk_json_write_ctx *w);
43 :
44 : struct nvme_bdev_io {
45 : /** array of iovecs to transfer. */
46 : struct iovec *iovs;
47 :
48 : /** Number of iovecs in iovs array. */
49 : int iovcnt;
50 :
51 : /** Current iovec position. */
52 : int iovpos;
53 :
54 : /** Offset in current iovec. */
55 : uint32_t iov_offset;
56 :
57 : /** I/O path the current I/O or admin passthrough is submitted on, or the I/O path
58 : * being reset in a reset I/O.
59 : */
60 : struct nvme_io_path *io_path;
61 :
62 : /** array of iovecs to transfer. */
63 : struct iovec *fused_iovs;
64 :
65 : /** Number of iovecs in iovs array. */
66 : int fused_iovcnt;
67 :
68 : /** Current iovec position. */
69 : int fused_iovpos;
70 :
71 : /** Offset in current iovec. */
72 : uint32_t fused_iov_offset;
73 :
74 : /** Saved status for admin passthru completion event, PI error verification, or intermediate compare-and-write status */
75 : struct spdk_nvme_cpl cpl;
76 :
77 : /** Extended IO opts passed by the user to bdev layer and mapped to NVME format */
78 : struct spdk_nvme_ns_cmd_ext_io_opts ext_opts;
79 :
80 : /** Keeps track if first of fused commands was submitted */
81 : bool first_fused_submitted;
82 :
83 : /** Keeps track if first of fused commands was completed */
84 : bool first_fused_completed;
85 :
86 : /** Temporary pointer to zone report buffer */
87 : struct spdk_nvme_zns_zone_report *zone_report_buf;
88 :
89 : /** Keep track of how many zones that have been copied to the spdk_bdev_zone_info struct */
90 : uint64_t handled_zones;
91 :
92 : /** Expiration value in ticks to retry the current I/O. */
93 : uint64_t retry_ticks;
94 :
95 : /* How many times the current I/O was retried. */
96 : int32_t retry_count;
97 :
98 : /* Current tsc at submit time. */
99 : uint64_t submit_tsc;
100 : };
101 :
102 : struct nvme_probe_skip_entry {
103 : struct spdk_nvme_transport_id trid;
104 : TAILQ_ENTRY(nvme_probe_skip_entry) tailq;
105 : };
106 : /* All the controllers deleted by users via RPC are skipped by hotplug monitor */
107 : static TAILQ_HEAD(, nvme_probe_skip_entry) g_skipped_nvme_ctrlrs = TAILQ_HEAD_INITIALIZER(
108 : g_skipped_nvme_ctrlrs);
109 :
110 : #define BDEV_NVME_DEFAULT_DIGESTS (SPDK_BIT(SPDK_NVMF_DHCHAP_HASH_SHA256) | \
111 : SPDK_BIT(SPDK_NVMF_DHCHAP_HASH_SHA384) | \
112 : SPDK_BIT(SPDK_NVMF_DHCHAP_HASH_SHA512))
113 :
114 : #define BDEV_NVME_DEFAULT_DHGROUPS (SPDK_BIT(SPDK_NVMF_DHCHAP_DHGROUP_NULL) | \
115 : SPDK_BIT(SPDK_NVMF_DHCHAP_DHGROUP_2048) | \
116 : SPDK_BIT(SPDK_NVMF_DHCHAP_DHGROUP_3072) | \
117 : SPDK_BIT(SPDK_NVMF_DHCHAP_DHGROUP_4096) | \
118 : SPDK_BIT(SPDK_NVMF_DHCHAP_DHGROUP_6144) | \
119 : SPDK_BIT(SPDK_NVMF_DHCHAP_DHGROUP_8192))
120 :
121 : static struct spdk_bdev_nvme_opts g_opts = {
122 : .action_on_timeout = SPDK_BDEV_NVME_TIMEOUT_ACTION_NONE,
123 : .timeout_us = 0,
124 : .timeout_admin_us = 0,
125 : .keep_alive_timeout_ms = SPDK_BDEV_NVME_DEFAULT_KEEP_ALIVE_TIMEOUT_IN_MS,
126 : .transport_retry_count = 4,
127 : .arbitration_burst = 0,
128 : .low_priority_weight = 0,
129 : .medium_priority_weight = 0,
130 : .high_priority_weight = 0,
131 : .nvme_adminq_poll_period_us = 10000ULL,
132 : .nvme_ioq_poll_period_us = 0,
133 : .io_queue_requests = 0,
134 : .delay_cmd_submit = SPDK_BDEV_NVME_DEFAULT_DELAY_CMD_SUBMIT,
135 : .bdev_retry_count = 3,
136 : .transport_ack_timeout = 0,
137 : .ctrlr_loss_timeout_sec = 0,
138 : .reconnect_delay_sec = 0,
139 : .fast_io_fail_timeout_sec = 0,
140 : .disable_auto_failback = false,
141 : .generate_uuids = false,
142 : .transport_tos = 0,
143 : .nvme_error_stat = false,
144 : .io_path_stat = false,
145 : .allow_accel_sequence = false,
146 : .dhchap_digests = BDEV_NVME_DEFAULT_DIGESTS,
147 : .dhchap_dhgroups = BDEV_NVME_DEFAULT_DHGROUPS,
148 : };
149 :
150 : #define NVME_HOTPLUG_POLL_PERIOD_MAX 10000000ULL
151 : #define NVME_HOTPLUG_POLL_PERIOD_DEFAULT 100000ULL
152 :
153 : static int g_hot_insert_nvme_controller_index = 0;
154 : static uint64_t g_nvme_hotplug_poll_period_us = NVME_HOTPLUG_POLL_PERIOD_DEFAULT;
155 : static bool g_nvme_hotplug_enabled = false;
156 : struct spdk_thread *g_bdev_nvme_init_thread;
157 : static struct spdk_poller *g_hotplug_poller;
158 : static struct spdk_poller *g_hotplug_probe_poller;
159 : static struct spdk_nvme_probe_ctx *g_hotplug_probe_ctx;
160 :
161 : static void nvme_ctrlr_populate_namespaces(struct nvme_ctrlr *nvme_ctrlr,
162 : struct nvme_async_probe_ctx *ctx);
163 : static void nvme_ctrlr_populate_namespaces_done(struct nvme_ctrlr *nvme_ctrlr,
164 : struct nvme_async_probe_ctx *ctx);
165 : static int bdev_nvme_library_init(void);
166 : static void bdev_nvme_library_fini(void);
167 : static void _bdev_nvme_submit_request(struct nvme_bdev_channel *nbdev_ch,
168 : struct spdk_bdev_io *bdev_io);
169 : static void bdev_nvme_submit_request(struct spdk_io_channel *ch,
170 : struct spdk_bdev_io *bdev_io);
171 : static int bdev_nvme_readv(struct nvme_bdev_io *bio, struct iovec *iov, int iovcnt,
172 : void *md, uint64_t lba_count, uint64_t lba,
173 : uint32_t flags, struct spdk_memory_domain *domain, void *domain_ctx,
174 : struct spdk_accel_sequence *seq);
175 : static int bdev_nvme_no_pi_readv(struct nvme_bdev_io *bio, struct iovec *iov, int iovcnt,
176 : void *md, uint64_t lba_count, uint64_t lba);
177 : static int bdev_nvme_writev(struct nvme_bdev_io *bio, struct iovec *iov, int iovcnt,
178 : void *md, uint64_t lba_count, uint64_t lba,
179 : uint32_t flags, struct spdk_memory_domain *domain, void *domain_ctx,
180 : struct spdk_accel_sequence *seq,
181 : union spdk_bdev_nvme_cdw12 cdw12, union spdk_bdev_nvme_cdw13 cdw13);
182 : static int bdev_nvme_zone_appendv(struct nvme_bdev_io *bio, struct iovec *iov, int iovcnt,
183 : void *md, uint64_t lba_count,
184 : uint64_t zslba, uint32_t flags);
185 : static int bdev_nvme_comparev(struct nvme_bdev_io *bio, struct iovec *iov, int iovcnt,
186 : void *md, uint64_t lba_count, uint64_t lba,
187 : uint32_t flags);
188 : static int bdev_nvme_comparev_and_writev(struct nvme_bdev_io *bio,
189 : struct iovec *cmp_iov, int cmp_iovcnt, struct iovec *write_iov,
190 : int write_iovcnt, void *md, uint64_t lba_count, uint64_t lba,
191 : uint32_t flags);
192 : static int bdev_nvme_get_zone_info(struct nvme_bdev_io *bio, uint64_t zone_id,
193 : uint32_t num_zones, struct spdk_bdev_zone_info *info);
194 : static int bdev_nvme_zone_management(struct nvme_bdev_io *bio, uint64_t zone_id,
195 : enum spdk_bdev_zone_action action);
196 : static void bdev_nvme_admin_passthru(struct nvme_bdev_channel *nbdev_ch,
197 : struct nvme_bdev_io *bio,
198 : struct spdk_nvme_cmd *cmd, void *buf, size_t nbytes);
199 : static int bdev_nvme_io_passthru(struct nvme_bdev_io *bio, struct spdk_nvme_cmd *cmd,
200 : void *buf, size_t nbytes);
201 : static int bdev_nvme_io_passthru_md(struct nvme_bdev_io *bio, struct spdk_nvme_cmd *cmd,
202 : void *buf, size_t nbytes, void *md_buf, size_t md_len);
203 : static int bdev_nvme_iov_passthru_md(struct nvme_bdev_io *bio, struct spdk_nvme_cmd *cmd,
204 : struct iovec *iov, int iovcnt, size_t nbytes,
205 : void *md_buf, size_t md_len);
206 : static void bdev_nvme_abort(struct nvme_bdev_channel *nbdev_ch,
207 : struct nvme_bdev_io *bio, struct nvme_bdev_io *bio_to_abort);
208 : static void bdev_nvme_reset_io(struct nvme_bdev_channel *nbdev_ch, struct nvme_bdev_io *bio);
209 : static int bdev_nvme_reset_ctrlr(struct nvme_ctrlr *nvme_ctrlr);
210 : static int bdev_nvme_failover_ctrlr(struct nvme_ctrlr *nvme_ctrlr);
211 : static void remove_cb(void *cb_ctx, struct spdk_nvme_ctrlr *ctrlr);
212 : static int nvme_ctrlr_read_ana_log_page(struct nvme_ctrlr *nvme_ctrlr);
213 :
214 : static struct nvme_ns *nvme_ns_alloc(void);
215 : static void nvme_ns_free(struct nvme_ns *ns);
216 :
217 : static int
218 173 : nvme_ns_cmp(struct nvme_ns *ns1, struct nvme_ns *ns2)
219 : {
220 173 : return ns1->id < ns2->id ? -1 : ns1->id > ns2->id;
221 : }
222 :
223 902 : RB_GENERATE_STATIC(nvme_ns_tree, nvme_ns, node, nvme_ns_cmp);
224 :
225 : struct spdk_nvme_qpair *
226 1 : bdev_nvme_get_io_qpair(struct spdk_io_channel *ctrlr_io_ch)
227 : {
228 : struct nvme_ctrlr_channel *ctrlr_ch;
229 :
230 1 : assert(ctrlr_io_ch != NULL);
231 :
232 1 : ctrlr_ch = spdk_io_channel_get_ctx(ctrlr_io_ch);
233 :
234 1 : return ctrlr_ch->qpair->qpair;
235 : }
236 :
237 : static int
238 0 : bdev_nvme_get_ctx_size(void)
239 : {
240 0 : return sizeof(struct nvme_bdev_io);
241 : }
242 :
243 : static struct spdk_bdev_module nvme_if = {
244 : .name = "nvme",
245 : .async_fini = true,
246 : .module_init = bdev_nvme_library_init,
247 : .module_fini = bdev_nvme_library_fini,
248 : .config_json = bdev_nvme_config_json,
249 : .get_ctx_size = bdev_nvme_get_ctx_size,
250 :
251 : };
252 1 : SPDK_BDEV_MODULE_REGISTER(nvme, &nvme_if)
253 :
254 : struct nvme_bdev_ctrlrs g_nvme_bdev_ctrlrs = TAILQ_HEAD_INITIALIZER(g_nvme_bdev_ctrlrs);
255 : pthread_mutex_t g_bdev_nvme_mutex = PTHREAD_MUTEX_INITIALIZER;
256 : bool g_bdev_nvme_module_finish;
257 :
258 : struct nvme_bdev_ctrlr *
259 270 : nvme_bdev_ctrlr_get_by_name(const char *name)
260 : {
261 : struct nvme_bdev_ctrlr *nbdev_ctrlr;
262 :
263 270 : TAILQ_FOREACH(nbdev_ctrlr, &g_nvme_bdev_ctrlrs, tailq) {
264 148 : if (strcmp(name, nbdev_ctrlr->name) == 0) {
265 148 : break;
266 : }
267 : }
268 :
269 270 : return nbdev_ctrlr;
270 : }
271 :
272 : static struct nvme_ctrlr *
273 58 : nvme_bdev_ctrlr_get_ctrlr(struct nvme_bdev_ctrlr *nbdev_ctrlr,
274 : const struct spdk_nvme_transport_id *trid, const char *hostnqn)
275 : {
276 : const struct spdk_nvme_ctrlr_opts *opts;
277 : struct nvme_ctrlr *nvme_ctrlr;
278 :
279 99 : TAILQ_FOREACH(nvme_ctrlr, &nbdev_ctrlr->ctrlrs, tailq) {
280 74 : opts = spdk_nvme_ctrlr_get_opts(nvme_ctrlr->ctrlr);
281 74 : if (spdk_nvme_transport_id_compare(trid, &nvme_ctrlr->active_path_id->trid) == 0 &&
282 33 : strcmp(hostnqn, opts->hostnqn) == 0) {
283 33 : break;
284 : }
285 : }
286 :
287 58 : return nvme_ctrlr;
288 : }
289 :
290 : struct nvme_ctrlr *
291 0 : nvme_bdev_ctrlr_get_ctrlr_by_id(struct nvme_bdev_ctrlr *nbdev_ctrlr,
292 : uint16_t cntlid)
293 : {
294 : struct nvme_ctrlr *nvme_ctrlr;
295 : const struct spdk_nvme_ctrlr_data *cdata;
296 :
297 0 : TAILQ_FOREACH(nvme_ctrlr, &nbdev_ctrlr->ctrlrs, tailq) {
298 0 : cdata = spdk_nvme_ctrlr_get_data(nvme_ctrlr->ctrlr);
299 0 : if (cdata->cntlid == cntlid) {
300 0 : break;
301 : }
302 : }
303 :
304 0 : return nvme_ctrlr;
305 : }
306 :
307 : static struct nvme_bdev *
308 72 : nvme_bdev_ctrlr_get_bdev(struct nvme_bdev_ctrlr *nbdev_ctrlr, uint32_t nsid)
309 : {
310 : struct nvme_bdev *bdev;
311 :
312 72 : pthread_mutex_lock(&g_bdev_nvme_mutex);
313 106 : TAILQ_FOREACH(bdev, &nbdev_ctrlr->bdevs, tailq) {
314 68 : if (bdev->nsid == nsid) {
315 34 : break;
316 : }
317 : }
318 72 : pthread_mutex_unlock(&g_bdev_nvme_mutex);
319 :
320 72 : return bdev;
321 : }
322 :
323 : struct nvme_ns *
324 139 : nvme_ctrlr_get_ns(struct nvme_ctrlr *nvme_ctrlr, uint32_t nsid)
325 : {
326 139 : struct nvme_ns ns;
327 :
328 139 : assert(nsid > 0);
329 :
330 139 : ns.id = nsid;
331 139 : return RB_FIND(nvme_ns_tree, &nvme_ctrlr->namespaces, &ns);
332 : }
333 :
334 : struct nvme_ns *
335 152 : nvme_ctrlr_get_first_active_ns(struct nvme_ctrlr *nvme_ctrlr)
336 : {
337 152 : return RB_MIN(nvme_ns_tree, &nvme_ctrlr->namespaces);
338 : }
339 :
340 : struct nvme_ns *
341 63 : nvme_ctrlr_get_next_active_ns(struct nvme_ctrlr *nvme_ctrlr, struct nvme_ns *ns)
342 : {
343 63 : if (ns == NULL) {
344 0 : return NULL;
345 : }
346 :
347 63 : return RB_NEXT(nvme_ns_tree, &nvme_ctrlr->namespaces, ns);
348 : }
349 :
350 : static struct nvme_ctrlr *
351 51 : nvme_ctrlr_get(const struct spdk_nvme_transport_id *trid, const char *hostnqn)
352 : {
353 : struct nvme_bdev_ctrlr *nbdev_ctrlr;
354 51 : struct nvme_ctrlr *nvme_ctrlr = NULL;
355 :
356 51 : pthread_mutex_lock(&g_bdev_nvme_mutex);
357 70 : TAILQ_FOREACH(nbdev_ctrlr, &g_nvme_bdev_ctrlrs, tailq) {
358 19 : nvme_ctrlr = nvme_bdev_ctrlr_get_ctrlr(nbdev_ctrlr, trid, hostnqn);
359 19 : if (nvme_ctrlr != NULL) {
360 0 : break;
361 : }
362 : }
363 51 : pthread_mutex_unlock(&g_bdev_nvme_mutex);
364 :
365 51 : return nvme_ctrlr;
366 : }
367 :
368 : struct nvme_ctrlr *
369 71 : nvme_ctrlr_get_by_name(const char *name)
370 : {
371 : struct nvme_bdev_ctrlr *nbdev_ctrlr;
372 71 : struct nvme_ctrlr *nvme_ctrlr = NULL;
373 :
374 71 : if (name == NULL) {
375 0 : return NULL;
376 : }
377 :
378 71 : pthread_mutex_lock(&g_bdev_nvme_mutex);
379 71 : nbdev_ctrlr = nvme_bdev_ctrlr_get_by_name(name);
380 71 : if (nbdev_ctrlr != NULL) {
381 40 : nvme_ctrlr = TAILQ_FIRST(&nbdev_ctrlr->ctrlrs);
382 : }
383 71 : pthread_mutex_unlock(&g_bdev_nvme_mutex);
384 :
385 71 : return nvme_ctrlr;
386 : }
387 :
388 : void
389 0 : nvme_bdev_ctrlr_for_each(nvme_bdev_ctrlr_for_each_fn fn, void *ctx)
390 : {
391 : struct nvme_bdev_ctrlr *nbdev_ctrlr;
392 :
393 0 : pthread_mutex_lock(&g_bdev_nvme_mutex);
394 0 : TAILQ_FOREACH(nbdev_ctrlr, &g_nvme_bdev_ctrlrs, tailq) {
395 0 : fn(nbdev_ctrlr, ctx);
396 : }
397 0 : pthread_mutex_unlock(&g_bdev_nvme_mutex);
398 0 : }
399 :
400 : void
401 0 : nvme_bdev_dump_trid_json(const struct spdk_nvme_transport_id *trid, struct spdk_json_write_ctx *w)
402 : {
403 : const char *trtype_str;
404 : const char *adrfam_str;
405 :
406 0 : trtype_str = spdk_nvme_transport_id_trtype_str(trid->trtype);
407 0 : if (trtype_str) {
408 0 : spdk_json_write_named_string(w, "trtype", trtype_str);
409 : }
410 :
411 0 : adrfam_str = spdk_nvme_transport_id_adrfam_str(trid->adrfam);
412 0 : if (adrfam_str) {
413 0 : spdk_json_write_named_string(w, "adrfam", adrfam_str);
414 : }
415 :
416 0 : if (trid->traddr[0] != '\0') {
417 0 : spdk_json_write_named_string(w, "traddr", trid->traddr);
418 : }
419 :
420 0 : if (trid->trsvcid[0] != '\0') {
421 0 : spdk_json_write_named_string(w, "trsvcid", trid->trsvcid);
422 : }
423 :
424 0 : if (trid->subnqn[0] != '\0') {
425 0 : spdk_json_write_named_string(w, "subnqn", trid->subnqn);
426 : }
427 0 : }
428 :
429 : static void
430 59 : nvme_bdev_ctrlr_delete(struct nvme_bdev_ctrlr *nbdev_ctrlr,
431 : struct nvme_ctrlr *nvme_ctrlr)
432 : {
433 : SPDK_DTRACE_PROBE1(bdev_nvme_ctrlr_delete, nvme_ctrlr->nbdev_ctrlr->name);
434 59 : pthread_mutex_lock(&g_bdev_nvme_mutex);
435 :
436 59 : TAILQ_REMOVE(&nbdev_ctrlr->ctrlrs, nvme_ctrlr, tailq);
437 59 : if (!TAILQ_EMPTY(&nbdev_ctrlr->ctrlrs)) {
438 15 : pthread_mutex_unlock(&g_bdev_nvme_mutex);
439 :
440 15 : return;
441 : }
442 44 : TAILQ_REMOVE(&g_nvme_bdev_ctrlrs, nbdev_ctrlr, tailq);
443 :
444 44 : pthread_mutex_unlock(&g_bdev_nvme_mutex);
445 :
446 44 : assert(TAILQ_EMPTY(&nbdev_ctrlr->bdevs));
447 :
448 44 : free(nbdev_ctrlr->name);
449 44 : free(nbdev_ctrlr);
450 : }
451 :
452 : static void
453 60 : _nvme_ctrlr_delete(struct nvme_ctrlr *nvme_ctrlr)
454 : {
455 : struct nvme_path_id *path_id, *tmp_path;
456 : struct nvme_ns *ns, *tmp_ns;
457 :
458 60 : free(nvme_ctrlr->copied_ana_desc);
459 60 : spdk_free(nvme_ctrlr->ana_log_page);
460 :
461 60 : if (nvme_ctrlr->opal_dev) {
462 0 : spdk_opal_dev_destruct(nvme_ctrlr->opal_dev);
463 0 : nvme_ctrlr->opal_dev = NULL;
464 : }
465 :
466 60 : if (nvme_ctrlr->nbdev_ctrlr) {
467 59 : nvme_bdev_ctrlr_delete(nvme_ctrlr->nbdev_ctrlr, nvme_ctrlr);
468 : }
469 :
470 60 : RB_FOREACH_SAFE(ns, nvme_ns_tree, &nvme_ctrlr->namespaces, tmp_ns) {
471 0 : RB_REMOVE(nvme_ns_tree, &nvme_ctrlr->namespaces, ns);
472 0 : nvme_ns_free(ns);
473 : }
474 :
475 120 : TAILQ_FOREACH_SAFE(path_id, &nvme_ctrlr->trids, link, tmp_path) {
476 60 : TAILQ_REMOVE(&nvme_ctrlr->trids, path_id, link);
477 60 : free(path_id);
478 : }
479 :
480 60 : pthread_mutex_destroy(&nvme_ctrlr->mutex);
481 60 : spdk_keyring_put_key(nvme_ctrlr->psk);
482 60 : spdk_keyring_put_key(nvme_ctrlr->dhchap_key);
483 60 : spdk_keyring_put_key(nvme_ctrlr->dhchap_ctrlr_key);
484 60 : free(nvme_ctrlr);
485 :
486 60 : pthread_mutex_lock(&g_bdev_nvme_mutex);
487 60 : if (g_bdev_nvme_module_finish && TAILQ_EMPTY(&g_nvme_bdev_ctrlrs)) {
488 0 : pthread_mutex_unlock(&g_bdev_nvme_mutex);
489 0 : spdk_io_device_unregister(&g_nvme_bdev_ctrlrs, NULL);
490 0 : spdk_bdev_module_fini_done();
491 0 : return;
492 : }
493 60 : pthread_mutex_unlock(&g_bdev_nvme_mutex);
494 : }
495 :
496 : static int
497 60 : nvme_detach_poller(void *arg)
498 : {
499 60 : struct nvme_ctrlr *nvme_ctrlr = arg;
500 : int rc;
501 :
502 60 : rc = spdk_nvme_detach_poll_async(nvme_ctrlr->detach_ctx);
503 60 : if (rc != -EAGAIN) {
504 60 : spdk_poller_unregister(&nvme_ctrlr->reset_detach_poller);
505 60 : _nvme_ctrlr_delete(nvme_ctrlr);
506 : }
507 :
508 60 : return SPDK_POLLER_BUSY;
509 : }
510 :
511 : static void
512 60 : nvme_ctrlr_delete(struct nvme_ctrlr *nvme_ctrlr)
513 : {
514 : int rc;
515 :
516 60 : spdk_poller_unregister(&nvme_ctrlr->reconnect_delay_timer);
517 :
518 : /* First, unregister the adminq poller, as the driver will poll adminq if necessary */
519 60 : spdk_poller_unregister(&nvme_ctrlr->adminq_timer_poller);
520 :
521 : /* If we got here, the reset/detach poller cannot be active */
522 60 : assert(nvme_ctrlr->reset_detach_poller == NULL);
523 60 : nvme_ctrlr->reset_detach_poller = SPDK_POLLER_REGISTER(nvme_detach_poller,
524 : nvme_ctrlr, 1000);
525 60 : if (nvme_ctrlr->reset_detach_poller == NULL) {
526 0 : SPDK_ERRLOG("Failed to register detach poller\n");
527 0 : goto error;
528 : }
529 :
530 60 : rc = spdk_nvme_detach_async(nvme_ctrlr->ctrlr, &nvme_ctrlr->detach_ctx);
531 60 : if (rc != 0) {
532 0 : SPDK_ERRLOG("Failed to detach the NVMe controller\n");
533 0 : goto error;
534 : }
535 :
536 60 : return;
537 0 : error:
538 : /* We don't have a good way to handle errors here, so just do what we can and delete the
539 : * controller without detaching the underlying NVMe device.
540 : */
541 0 : spdk_poller_unregister(&nvme_ctrlr->reset_detach_poller);
542 0 : _nvme_ctrlr_delete(nvme_ctrlr);
543 : }
544 :
545 : static void
546 59 : nvme_ctrlr_unregister_cb(void *io_device)
547 : {
548 59 : struct nvme_ctrlr *nvme_ctrlr = io_device;
549 :
550 59 : nvme_ctrlr_delete(nvme_ctrlr);
551 59 : }
552 :
553 : static void
554 59 : nvme_ctrlr_unregister(void *ctx)
555 : {
556 59 : struct nvme_ctrlr *nvme_ctrlr = ctx;
557 :
558 59 : spdk_io_device_unregister(nvme_ctrlr, nvme_ctrlr_unregister_cb);
559 59 : }
560 :
561 : static bool
562 220 : nvme_ctrlr_can_be_unregistered(struct nvme_ctrlr *nvme_ctrlr)
563 : {
564 220 : if (!nvme_ctrlr->destruct) {
565 105 : return false;
566 : }
567 :
568 115 : if (nvme_ctrlr->ref > 0) {
569 56 : return false;
570 : }
571 :
572 59 : if (nvme_ctrlr->resetting) {
573 0 : return false;
574 : }
575 :
576 59 : if (nvme_ctrlr->ana_log_page_updating) {
577 0 : return false;
578 : }
579 :
580 59 : if (nvme_ctrlr->io_path_cache_clearing) {
581 0 : return false;
582 : }
583 :
584 59 : return true;
585 : }
586 :
587 : static void
588 164 : nvme_ctrlr_release(struct nvme_ctrlr *nvme_ctrlr)
589 : {
590 164 : pthread_mutex_lock(&nvme_ctrlr->mutex);
591 : SPDK_DTRACE_PROBE2(bdev_nvme_ctrlr_release, nvme_ctrlr->nbdev_ctrlr->name, nvme_ctrlr->ref);
592 :
593 164 : assert(nvme_ctrlr->ref > 0);
594 164 : nvme_ctrlr->ref--;
595 :
596 164 : if (!nvme_ctrlr_can_be_unregistered(nvme_ctrlr)) {
597 105 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
598 105 : return;
599 : }
600 :
601 59 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
602 :
603 59 : spdk_thread_exec_msg(nvme_ctrlr->thread, nvme_ctrlr_unregister, nvme_ctrlr);
604 : }
605 :
606 : static void
607 161 : bdev_nvme_clear_current_io_path(struct nvme_bdev_channel *nbdev_ch)
608 : {
609 161 : nbdev_ch->current_io_path = NULL;
610 161 : nbdev_ch->rr_counter = 0;
611 161 : }
612 :
613 : static struct nvme_io_path *
614 8 : _bdev_nvme_get_io_path(struct nvme_bdev_channel *nbdev_ch, struct nvme_ns *nvme_ns)
615 : {
616 : struct nvme_io_path *io_path;
617 :
618 16 : STAILQ_FOREACH(io_path, &nbdev_ch->io_path_list, stailq) {
619 15 : if (io_path->nvme_ns == nvme_ns) {
620 7 : break;
621 : }
622 : }
623 :
624 8 : return io_path;
625 : }
626 :
627 : static struct nvme_io_path *
628 35 : nvme_io_path_alloc(void)
629 : {
630 : struct nvme_io_path *io_path;
631 :
632 35 : io_path = calloc(1, sizeof(*io_path));
633 35 : if (io_path == NULL) {
634 0 : SPDK_ERRLOG("Failed to alloc io_path.\n");
635 0 : return NULL;
636 : }
637 :
638 35 : if (g_opts.io_path_stat) {
639 0 : io_path->stat = calloc(1, sizeof(struct spdk_bdev_io_stat));
640 0 : if (io_path->stat == NULL) {
641 0 : free(io_path);
642 0 : SPDK_ERRLOG("Failed to alloc io_path stat.\n");
643 0 : return NULL;
644 : }
645 0 : spdk_bdev_reset_io_stat(io_path->stat, SPDK_BDEV_RESET_STAT_MAXMIN);
646 : }
647 :
648 35 : return io_path;
649 : }
650 :
651 : static void
652 35 : nvme_io_path_free(struct nvme_io_path *io_path)
653 : {
654 35 : free(io_path->stat);
655 35 : free(io_path);
656 35 : }
657 :
658 : static int
659 35 : _bdev_nvme_add_io_path(struct nvme_bdev_channel *nbdev_ch, struct nvme_ns *nvme_ns)
660 : {
661 : struct nvme_io_path *io_path;
662 : struct spdk_io_channel *ch;
663 : struct nvme_ctrlr_channel *ctrlr_ch;
664 : struct nvme_qpair *nvme_qpair;
665 :
666 35 : io_path = nvme_io_path_alloc();
667 35 : if (io_path == NULL) {
668 0 : return -ENOMEM;
669 : }
670 :
671 35 : io_path->nvme_ns = nvme_ns;
672 :
673 35 : ch = spdk_get_io_channel(nvme_ns->ctrlr);
674 35 : if (ch == NULL) {
675 0 : nvme_io_path_free(io_path);
676 0 : SPDK_ERRLOG("Failed to alloc io_channel.\n");
677 0 : return -ENOMEM;
678 : }
679 :
680 35 : ctrlr_ch = spdk_io_channel_get_ctx(ch);
681 :
682 35 : nvme_qpair = ctrlr_ch->qpair;
683 35 : assert(nvme_qpair != NULL);
684 :
685 35 : io_path->qpair = nvme_qpair;
686 35 : TAILQ_INSERT_TAIL(&nvme_qpair->io_path_list, io_path, tailq);
687 :
688 35 : io_path->nbdev_ch = nbdev_ch;
689 35 : STAILQ_INSERT_TAIL(&nbdev_ch->io_path_list, io_path, stailq);
690 :
691 35 : bdev_nvme_clear_current_io_path(nbdev_ch);
692 :
693 35 : return 0;
694 : }
695 :
696 : static void
697 35 : bdev_nvme_clear_retry_io_path(struct nvme_bdev_channel *nbdev_ch,
698 : struct nvme_io_path *io_path)
699 : {
700 : struct spdk_bdev_io *bdev_io;
701 : struct nvme_bdev_io *bio;
702 :
703 36 : TAILQ_FOREACH(bdev_io, &nbdev_ch->retry_io_list, module_link) {
704 1 : bio = (struct nvme_bdev_io *)bdev_io->driver_ctx;
705 1 : if (bio->io_path == io_path) {
706 1 : bio->io_path = NULL;
707 : }
708 : }
709 35 : }
710 :
711 : static void
712 35 : _bdev_nvme_delete_io_path(struct nvme_bdev_channel *nbdev_ch, struct nvme_io_path *io_path)
713 : {
714 : struct spdk_io_channel *ch;
715 : struct nvme_qpair *nvme_qpair;
716 : struct nvme_ctrlr_channel *ctrlr_ch;
717 : struct nvme_bdev *nbdev;
718 :
719 35 : nbdev = spdk_io_channel_get_io_device(spdk_io_channel_from_ctx(nbdev_ch));
720 :
721 : /* Add the statistics to nvme_ns before this path is destroyed. */
722 35 : pthread_mutex_lock(&nbdev->mutex);
723 35 : if (nbdev->ref != 0 && io_path->nvme_ns->stat != NULL && io_path->stat != NULL) {
724 0 : spdk_bdev_add_io_stat(io_path->nvme_ns->stat, io_path->stat);
725 : }
726 35 : pthread_mutex_unlock(&nbdev->mutex);
727 :
728 35 : bdev_nvme_clear_current_io_path(nbdev_ch);
729 35 : bdev_nvme_clear_retry_io_path(nbdev_ch, io_path);
730 :
731 35 : STAILQ_REMOVE(&nbdev_ch->io_path_list, io_path, nvme_io_path, stailq);
732 35 : io_path->nbdev_ch = NULL;
733 :
734 35 : nvme_qpair = io_path->qpair;
735 35 : assert(nvme_qpair != NULL);
736 :
737 35 : ctrlr_ch = nvme_qpair->ctrlr_ch;
738 35 : assert(ctrlr_ch != NULL);
739 :
740 35 : ch = spdk_io_channel_from_ctx(ctrlr_ch);
741 35 : spdk_put_io_channel(ch);
742 :
743 : /* After an io_path is removed, I/Os submitted to it may complete and update statistics
744 : * of the io_path. To avoid heap-use-after-free error from this case, do not free the
745 : * io_path here but free the io_path when the associated qpair is freed. It is ensured
746 : * that all I/Os submitted to the io_path are completed when the associated qpair is freed.
747 : */
748 35 : }
749 :
750 : static void
751 22 : _bdev_nvme_delete_io_paths(struct nvme_bdev_channel *nbdev_ch)
752 : {
753 : struct nvme_io_path *io_path, *tmp_io_path;
754 :
755 55 : STAILQ_FOREACH_SAFE(io_path, &nbdev_ch->io_path_list, stailq, tmp_io_path) {
756 33 : _bdev_nvme_delete_io_path(nbdev_ch, io_path);
757 : }
758 22 : }
759 :
760 : static int
761 22 : bdev_nvme_create_bdev_channel_cb(void *io_device, void *ctx_buf)
762 : {
763 22 : struct nvme_bdev_channel *nbdev_ch = ctx_buf;
764 22 : struct nvme_bdev *nbdev = io_device;
765 : struct nvme_ns *nvme_ns;
766 : int rc;
767 :
768 22 : STAILQ_INIT(&nbdev_ch->io_path_list);
769 22 : TAILQ_INIT(&nbdev_ch->retry_io_list);
770 :
771 22 : pthread_mutex_lock(&nbdev->mutex);
772 :
773 22 : nbdev_ch->mp_policy = nbdev->mp_policy;
774 22 : nbdev_ch->mp_selector = nbdev->mp_selector;
775 22 : nbdev_ch->rr_min_io = nbdev->rr_min_io;
776 :
777 55 : TAILQ_FOREACH(nvme_ns, &nbdev->nvme_ns_list, tailq) {
778 33 : rc = _bdev_nvme_add_io_path(nbdev_ch, nvme_ns);
779 33 : if (rc != 0) {
780 0 : pthread_mutex_unlock(&nbdev->mutex);
781 :
782 0 : _bdev_nvme_delete_io_paths(nbdev_ch);
783 0 : return rc;
784 : }
785 : }
786 22 : pthread_mutex_unlock(&nbdev->mutex);
787 :
788 22 : return 0;
789 : }
790 :
791 : /* If cpl != NULL, complete the bdev_io with nvme status based on 'cpl'.
792 : * If cpl == NULL, complete the bdev_io with bdev status based on 'status'.
793 : */
794 : static inline void
795 47 : __bdev_nvme_io_complete(struct spdk_bdev_io *bdev_io, enum spdk_bdev_io_status status,
796 : const struct spdk_nvme_cpl *cpl)
797 : {
798 47 : spdk_trace_record(TRACE_BDEV_NVME_IO_DONE, 0, 0, (uintptr_t)bdev_io->driver_ctx,
799 : (uintptr_t)bdev_io);
800 47 : if (cpl) {
801 29 : spdk_bdev_io_complete_nvme_status(bdev_io, cpl->cdw0, cpl->status.sct, cpl->status.sc);
802 : } else {
803 18 : spdk_bdev_io_complete(bdev_io, status);
804 : }
805 47 : }
806 :
807 : static void bdev_nvme_abort_retry_ios(struct nvme_bdev_channel *nbdev_ch);
808 :
809 : static void
810 22 : bdev_nvme_destroy_bdev_channel_cb(void *io_device, void *ctx_buf)
811 : {
812 22 : struct nvme_bdev_channel *nbdev_ch = ctx_buf;
813 :
814 22 : bdev_nvme_abort_retry_ios(nbdev_ch);
815 22 : _bdev_nvme_delete_io_paths(nbdev_ch);
816 22 : }
817 :
818 : static inline bool
819 58 : bdev_nvme_io_type_is_admin(enum spdk_bdev_io_type io_type)
820 : {
821 58 : switch (io_type) {
822 5 : case SPDK_BDEV_IO_TYPE_RESET:
823 : case SPDK_BDEV_IO_TYPE_NVME_ADMIN:
824 : case SPDK_BDEV_IO_TYPE_ABORT:
825 5 : return true;
826 53 : default:
827 53 : break;
828 : }
829 :
830 53 : return false;
831 : }
832 :
833 : static inline bool
834 90 : nvme_ns_is_active(struct nvme_ns *nvme_ns)
835 : {
836 90 : if (spdk_unlikely(nvme_ns->ana_state_updating)) {
837 1 : return false;
838 : }
839 :
840 89 : if (spdk_unlikely(nvme_ns->ns == NULL)) {
841 0 : return false;
842 : }
843 :
844 89 : return true;
845 : }
846 :
847 : static inline bool
848 78 : nvme_ns_is_accessible(struct nvme_ns *nvme_ns)
849 : {
850 78 : if (spdk_unlikely(!nvme_ns_is_active(nvme_ns))) {
851 1 : return false;
852 : }
853 :
854 77 : switch (nvme_ns->ana_state) {
855 68 : case SPDK_NVME_ANA_OPTIMIZED_STATE:
856 : case SPDK_NVME_ANA_NON_OPTIMIZED_STATE:
857 68 : return true;
858 9 : default:
859 9 : break;
860 : }
861 :
862 9 : return false;
863 : }
864 :
865 : static inline bool
866 117 : nvme_qpair_is_connected(struct nvme_qpair *nvme_qpair)
867 : {
868 117 : if (spdk_unlikely(nvme_qpair->qpair == NULL)) {
869 20 : return false;
870 : }
871 :
872 97 : if (spdk_unlikely(spdk_nvme_qpair_get_failure_reason(nvme_qpair->qpair) !=
873 : SPDK_NVME_QPAIR_FAILURE_NONE)) {
874 2 : return false;
875 : }
876 :
877 95 : if (spdk_unlikely(nvme_qpair->ctrlr_ch->reset_iter != NULL)) {
878 0 : return false;
879 : }
880 :
881 95 : return true;
882 : }
883 :
884 : static inline bool
885 92 : nvme_io_path_is_available(struct nvme_io_path *io_path)
886 : {
887 92 : if (spdk_unlikely(!nvme_qpair_is_connected(io_path->qpair))) {
888 14 : return false;
889 : }
890 :
891 78 : if (spdk_unlikely(!nvme_ns_is_accessible(io_path->nvme_ns))) {
892 10 : return false;
893 : }
894 :
895 68 : return true;
896 : }
897 :
898 : static inline bool
899 8 : nvme_ctrlr_is_failed(struct nvme_ctrlr *nvme_ctrlr)
900 : {
901 8 : if (nvme_ctrlr->destruct) {
902 0 : return true;
903 : }
904 :
905 8 : if (nvme_ctrlr->fast_io_fail_timedout) {
906 2 : return true;
907 : }
908 :
909 6 : if (nvme_ctrlr->resetting) {
910 4 : if (nvme_ctrlr->opts.reconnect_delay_sec != 0) {
911 4 : return false;
912 : } else {
913 0 : return true;
914 : }
915 : }
916 :
917 2 : if (nvme_ctrlr->reconnect_is_delayed) {
918 2 : return false;
919 : }
920 :
921 0 : if (nvme_ctrlr->disabled) {
922 0 : return true;
923 : }
924 :
925 0 : if (spdk_nvme_ctrlr_is_failed(nvme_ctrlr->ctrlr)) {
926 0 : return true;
927 : } else {
928 0 : return false;
929 : }
930 : }
931 :
932 : static bool
933 20 : nvme_ctrlr_is_available(struct nvme_ctrlr *nvme_ctrlr)
934 : {
935 20 : if (nvme_ctrlr->destruct) {
936 0 : return false;
937 : }
938 :
939 20 : if (spdk_nvme_ctrlr_is_failed(nvme_ctrlr->ctrlr)) {
940 3 : return false;
941 : }
942 :
943 17 : if (nvme_ctrlr->resetting || nvme_ctrlr->reconnect_is_delayed) {
944 1 : return false;
945 : }
946 :
947 16 : if (nvme_ctrlr->disabled) {
948 0 : return false;
949 : }
950 :
951 16 : return true;
952 : }
953 :
954 : /* Simulate circular linked list. */
955 : static inline struct nvme_io_path *
956 87 : nvme_io_path_get_next(struct nvme_bdev_channel *nbdev_ch, struct nvme_io_path *prev_path)
957 : {
958 : struct nvme_io_path *next_path;
959 :
960 87 : if (prev_path != NULL) {
961 37 : next_path = STAILQ_NEXT(prev_path, stailq);
962 37 : if (next_path != NULL) {
963 14 : return next_path;
964 : }
965 : }
966 :
967 73 : return STAILQ_FIRST(&nbdev_ch->io_path_list);
968 : }
969 :
970 : static struct nvme_io_path *
971 57 : _bdev_nvme_find_io_path(struct nvme_bdev_channel *nbdev_ch)
972 : {
973 57 : struct nvme_io_path *io_path, *start, *non_optimized = NULL;
974 :
975 57 : start = nvme_io_path_get_next(nbdev_ch, nbdev_ch->current_io_path);
976 :
977 57 : io_path = start;
978 : do {
979 69 : if (spdk_likely(nvme_io_path_is_available(io_path))) {
980 49 : switch (io_path->nvme_ns->ana_state) {
981 39 : case SPDK_NVME_ANA_OPTIMIZED_STATE:
982 39 : nbdev_ch->current_io_path = io_path;
983 39 : return io_path;
984 10 : case SPDK_NVME_ANA_NON_OPTIMIZED_STATE:
985 10 : if (non_optimized == NULL) {
986 7 : non_optimized = io_path;
987 : }
988 10 : break;
989 0 : default:
990 0 : assert(false);
991 : break;
992 : }
993 20 : }
994 30 : io_path = nvme_io_path_get_next(nbdev_ch, io_path);
995 30 : } while (io_path != start);
996 :
997 18 : if (nbdev_ch->mp_policy == BDEV_NVME_MP_POLICY_ACTIVE_ACTIVE) {
998 : /* We come here only if there is no optimized path. Cache even non_optimized
999 : * path for load balance across multiple non_optimized paths.
1000 : */
1001 1 : nbdev_ch->current_io_path = non_optimized;
1002 : }
1003 :
1004 18 : return non_optimized;
1005 : }
1006 :
1007 : static struct nvme_io_path *
1008 4 : _bdev_nvme_find_io_path_min_qd(struct nvme_bdev_channel *nbdev_ch)
1009 : {
1010 : struct nvme_io_path *io_path;
1011 4 : struct nvme_io_path *optimized = NULL, *non_optimized = NULL;
1012 4 : uint32_t opt_min_qd = UINT32_MAX, non_opt_min_qd = UINT32_MAX;
1013 : uint32_t num_outstanding_reqs;
1014 :
1015 16 : STAILQ_FOREACH(io_path, &nbdev_ch->io_path_list, stailq) {
1016 12 : if (spdk_unlikely(!nvme_qpair_is_connected(io_path->qpair))) {
1017 : /* The device is currently resetting. */
1018 0 : continue;
1019 : }
1020 :
1021 12 : if (spdk_unlikely(!nvme_ns_is_active(io_path->nvme_ns))) {
1022 0 : continue;
1023 : }
1024 :
1025 12 : num_outstanding_reqs = spdk_nvme_qpair_get_num_outstanding_reqs(io_path->qpair->qpair);
1026 12 : switch (io_path->nvme_ns->ana_state) {
1027 6 : case SPDK_NVME_ANA_OPTIMIZED_STATE:
1028 6 : if (num_outstanding_reqs < opt_min_qd) {
1029 5 : opt_min_qd = num_outstanding_reqs;
1030 5 : optimized = io_path;
1031 : }
1032 6 : break;
1033 3 : case SPDK_NVME_ANA_NON_OPTIMIZED_STATE:
1034 3 : if (num_outstanding_reqs < non_opt_min_qd) {
1035 3 : non_opt_min_qd = num_outstanding_reqs;
1036 3 : non_optimized = io_path;
1037 : }
1038 3 : break;
1039 3 : default:
1040 3 : break;
1041 : }
1042 : }
1043 :
1044 : /* don't cache io path for BDEV_NVME_MP_SELECTOR_QUEUE_DEPTH selector */
1045 4 : if (optimized != NULL) {
1046 3 : return optimized;
1047 : }
1048 :
1049 1 : return non_optimized;
1050 : }
1051 :
1052 : static inline struct nvme_io_path *
1053 95 : bdev_nvme_find_io_path(struct nvme_bdev_channel *nbdev_ch)
1054 : {
1055 95 : if (spdk_likely(nbdev_ch->current_io_path != NULL)) {
1056 41 : if (nbdev_ch->mp_policy == BDEV_NVME_MP_POLICY_ACTIVE_PASSIVE) {
1057 31 : return nbdev_ch->current_io_path;
1058 10 : } else if (nbdev_ch->mp_selector == BDEV_NVME_MP_SELECTOR_ROUND_ROBIN) {
1059 10 : if (++nbdev_ch->rr_counter < nbdev_ch->rr_min_io) {
1060 3 : return nbdev_ch->current_io_path;
1061 : }
1062 7 : nbdev_ch->rr_counter = 0;
1063 : }
1064 : }
1065 :
1066 61 : if (nbdev_ch->mp_policy == BDEV_NVME_MP_POLICY_ACTIVE_PASSIVE ||
1067 14 : nbdev_ch->mp_selector == BDEV_NVME_MP_SELECTOR_ROUND_ROBIN) {
1068 57 : return _bdev_nvme_find_io_path(nbdev_ch);
1069 : } else {
1070 4 : return _bdev_nvme_find_io_path_min_qd(nbdev_ch);
1071 : }
1072 : }
1073 :
1074 : /* Return true if there is any io_path whose qpair is active or ctrlr is not failed,
1075 : * or false otherwise.
1076 : *
1077 : * If any io_path has an active qpair but find_io_path() returned NULL, its namespace
1078 : * is likely to be non-accessible now but may become accessible.
1079 : *
1080 : * If any io_path has an unfailed ctrlr but find_io_path() returned NULL, the ctrlr
1081 : * is likely to be resetting now but the reset may succeed. A ctrlr is set to unfailed
1082 : * when starting to reset it but it is set to failed when the reset failed. Hence, if
1083 : * a ctrlr is unfailed, it is likely that it works fine or is resetting.
1084 : */
1085 : static bool
1086 13 : any_io_path_may_become_available(struct nvme_bdev_channel *nbdev_ch)
1087 : {
1088 : struct nvme_io_path *io_path;
1089 :
1090 15 : STAILQ_FOREACH(io_path, &nbdev_ch->io_path_list, stailq) {
1091 13 : if (io_path->nvme_ns->ana_transition_timedout) {
1092 0 : continue;
1093 : }
1094 :
1095 13 : if (nvme_qpair_is_connected(io_path->qpair) ||
1096 8 : !nvme_ctrlr_is_failed(io_path->qpair->ctrlr)) {
1097 11 : return true;
1098 : }
1099 : }
1100 :
1101 2 : return false;
1102 : }
1103 :
1104 : static void
1105 14 : bdev_nvme_retry_io(struct nvme_bdev_channel *nbdev_ch, struct spdk_bdev_io *bdev_io)
1106 : {
1107 14 : struct nvme_bdev_io *nbdev_io = (struct nvme_bdev_io *)bdev_io->driver_ctx;
1108 : struct spdk_io_channel *ch;
1109 :
1110 14 : if (nbdev_io->io_path != NULL && nvme_io_path_is_available(nbdev_io->io_path)) {
1111 3 : _bdev_nvme_submit_request(nbdev_ch, bdev_io);
1112 : } else {
1113 11 : ch = spdk_io_channel_from_ctx(nbdev_ch);
1114 11 : bdev_nvme_submit_request(ch, bdev_io);
1115 : }
1116 14 : }
1117 :
1118 : static int
1119 14 : bdev_nvme_retry_ios(void *arg)
1120 : {
1121 14 : struct nvme_bdev_channel *nbdev_ch = arg;
1122 : struct spdk_bdev_io *bdev_io, *tmp_bdev_io;
1123 : struct nvme_bdev_io *bio;
1124 : uint64_t now, delay_us;
1125 :
1126 14 : now = spdk_get_ticks();
1127 :
1128 28 : TAILQ_FOREACH_SAFE(bdev_io, &nbdev_ch->retry_io_list, module_link, tmp_bdev_io) {
1129 15 : bio = (struct nvme_bdev_io *)bdev_io->driver_ctx;
1130 15 : if (bio->retry_ticks > now) {
1131 1 : break;
1132 : }
1133 :
1134 14 : TAILQ_REMOVE(&nbdev_ch->retry_io_list, bdev_io, module_link);
1135 :
1136 14 : bdev_nvme_retry_io(nbdev_ch, bdev_io);
1137 : }
1138 :
1139 14 : spdk_poller_unregister(&nbdev_ch->retry_io_poller);
1140 :
1141 14 : bdev_io = TAILQ_FIRST(&nbdev_ch->retry_io_list);
1142 14 : if (bdev_io != NULL) {
1143 4 : bio = (struct nvme_bdev_io *)bdev_io->driver_ctx;
1144 :
1145 4 : delay_us = (bio->retry_ticks - now) * SPDK_SEC_TO_USEC / spdk_get_ticks_hz();
1146 :
1147 4 : nbdev_ch->retry_io_poller = SPDK_POLLER_REGISTER(bdev_nvme_retry_ios, nbdev_ch,
1148 : delay_us);
1149 : }
1150 :
1151 14 : return SPDK_POLLER_BUSY;
1152 : }
1153 :
1154 : static void
1155 15 : bdev_nvme_queue_retry_io(struct nvme_bdev_channel *nbdev_ch,
1156 : struct nvme_bdev_io *bio, uint64_t delay_ms)
1157 : {
1158 15 : struct spdk_bdev_io *bdev_io = spdk_bdev_io_from_ctx(bio);
1159 : struct spdk_bdev_io *tmp_bdev_io;
1160 : struct nvme_bdev_io *tmp_bio;
1161 :
1162 15 : bio->retry_ticks = spdk_get_ticks() + delay_ms * spdk_get_ticks_hz() / 1000ULL;
1163 :
1164 15 : TAILQ_FOREACH_REVERSE(tmp_bdev_io, &nbdev_ch->retry_io_list, retry_io_head, module_link) {
1165 1 : tmp_bio = (struct nvme_bdev_io *)tmp_bdev_io->driver_ctx;
1166 :
1167 1 : if (tmp_bio->retry_ticks <= bio->retry_ticks) {
1168 1 : TAILQ_INSERT_AFTER(&nbdev_ch->retry_io_list, tmp_bdev_io, bdev_io,
1169 : module_link);
1170 1 : return;
1171 : }
1172 : }
1173 :
1174 : /* No earlier I/Os were found. This I/O must be the new head. */
1175 14 : TAILQ_INSERT_HEAD(&nbdev_ch->retry_io_list, bdev_io, module_link);
1176 :
1177 14 : spdk_poller_unregister(&nbdev_ch->retry_io_poller);
1178 :
1179 14 : nbdev_ch->retry_io_poller = SPDK_POLLER_REGISTER(bdev_nvme_retry_ios, nbdev_ch,
1180 : delay_ms * 1000ULL);
1181 : }
1182 :
1183 : static void
1184 36 : bdev_nvme_abort_retry_ios(struct nvme_bdev_channel *nbdev_ch)
1185 : {
1186 : struct spdk_bdev_io *bdev_io, *tmp_io;
1187 :
1188 36 : TAILQ_FOREACH_SAFE(bdev_io, &nbdev_ch->retry_io_list, module_link, tmp_io) {
1189 0 : TAILQ_REMOVE(&nbdev_ch->retry_io_list, bdev_io, module_link);
1190 0 : __bdev_nvme_io_complete(bdev_io, SPDK_BDEV_IO_STATUS_ABORTED, NULL);
1191 : }
1192 :
1193 36 : spdk_poller_unregister(&nbdev_ch->retry_io_poller);
1194 36 : }
1195 :
1196 : static int
1197 6 : bdev_nvme_abort_retry_io(struct nvme_bdev_channel *nbdev_ch,
1198 : struct nvme_bdev_io *bio_to_abort)
1199 : {
1200 : struct spdk_bdev_io *bdev_io_to_abort;
1201 :
1202 6 : TAILQ_FOREACH(bdev_io_to_abort, &nbdev_ch->retry_io_list, module_link) {
1203 1 : if ((struct nvme_bdev_io *)bdev_io_to_abort->driver_ctx == bio_to_abort) {
1204 1 : TAILQ_REMOVE(&nbdev_ch->retry_io_list, bdev_io_to_abort, module_link);
1205 1 : __bdev_nvme_io_complete(bdev_io_to_abort, SPDK_BDEV_IO_STATUS_ABORTED, NULL);
1206 1 : return 0;
1207 : }
1208 : }
1209 :
1210 5 : return -ENOENT;
1211 : }
1212 :
1213 : static void
1214 12 : bdev_nvme_update_nvme_error_stat(struct spdk_bdev_io *bdev_io, const struct spdk_nvme_cpl *cpl)
1215 : {
1216 : struct nvme_bdev *nbdev;
1217 : uint16_t sct, sc;
1218 :
1219 12 : assert(spdk_nvme_cpl_is_error(cpl));
1220 :
1221 12 : nbdev = bdev_io->bdev->ctxt;
1222 :
1223 12 : if (nbdev->err_stat == NULL) {
1224 12 : return;
1225 : }
1226 :
1227 0 : sct = cpl->status.sct;
1228 0 : sc = cpl->status.sc;
1229 :
1230 0 : pthread_mutex_lock(&nbdev->mutex);
1231 :
1232 0 : nbdev->err_stat->status_type[sct]++;
1233 0 : switch (sct) {
1234 0 : case SPDK_NVME_SCT_GENERIC:
1235 : case SPDK_NVME_SCT_COMMAND_SPECIFIC:
1236 : case SPDK_NVME_SCT_MEDIA_ERROR:
1237 : case SPDK_NVME_SCT_PATH:
1238 0 : nbdev->err_stat->status[sct][sc]++;
1239 0 : break;
1240 0 : default:
1241 0 : break;
1242 : }
1243 :
1244 0 : pthread_mutex_unlock(&nbdev->mutex);
1245 : }
1246 :
1247 : static inline void
1248 20 : bdev_nvme_update_io_path_stat(struct nvme_bdev_io *bio)
1249 : {
1250 20 : struct spdk_bdev_io *bdev_io = spdk_bdev_io_from_ctx(bio);
1251 20 : uint64_t num_blocks = bdev_io->u.bdev.num_blocks;
1252 20 : uint32_t blocklen = bdev_io->bdev->blocklen;
1253 : struct spdk_bdev_io_stat *stat;
1254 : uint64_t tsc_diff;
1255 :
1256 20 : if (bio->io_path->stat == NULL) {
1257 20 : return;
1258 : }
1259 :
1260 0 : tsc_diff = spdk_get_ticks() - bio->submit_tsc;
1261 0 : stat = bio->io_path->stat;
1262 :
1263 0 : switch (bdev_io->type) {
1264 0 : case SPDK_BDEV_IO_TYPE_READ:
1265 0 : stat->bytes_read += num_blocks * blocklen;
1266 0 : stat->num_read_ops++;
1267 0 : stat->read_latency_ticks += tsc_diff;
1268 0 : if (stat->max_read_latency_ticks < tsc_diff) {
1269 0 : stat->max_read_latency_ticks = tsc_diff;
1270 : }
1271 0 : if (stat->min_read_latency_ticks > tsc_diff) {
1272 0 : stat->min_read_latency_ticks = tsc_diff;
1273 : }
1274 0 : break;
1275 0 : case SPDK_BDEV_IO_TYPE_WRITE:
1276 0 : stat->bytes_written += num_blocks * blocklen;
1277 0 : stat->num_write_ops++;
1278 0 : stat->write_latency_ticks += tsc_diff;
1279 0 : if (stat->max_write_latency_ticks < tsc_diff) {
1280 0 : stat->max_write_latency_ticks = tsc_diff;
1281 : }
1282 0 : if (stat->min_write_latency_ticks > tsc_diff) {
1283 0 : stat->min_write_latency_ticks = tsc_diff;
1284 : }
1285 0 : break;
1286 0 : case SPDK_BDEV_IO_TYPE_UNMAP:
1287 0 : stat->bytes_unmapped += num_blocks * blocklen;
1288 0 : stat->num_unmap_ops++;
1289 0 : stat->unmap_latency_ticks += tsc_diff;
1290 0 : if (stat->max_unmap_latency_ticks < tsc_diff) {
1291 0 : stat->max_unmap_latency_ticks = tsc_diff;
1292 : }
1293 0 : if (stat->min_unmap_latency_ticks > tsc_diff) {
1294 0 : stat->min_unmap_latency_ticks = tsc_diff;
1295 : }
1296 0 : break;
1297 0 : case SPDK_BDEV_IO_TYPE_ZCOPY:
1298 : /* Track the data in the start phase only */
1299 0 : if (!bdev_io->u.bdev.zcopy.start) {
1300 0 : break;
1301 : }
1302 0 : if (bdev_io->u.bdev.zcopy.populate) {
1303 0 : stat->bytes_read += num_blocks * blocklen;
1304 0 : stat->num_read_ops++;
1305 0 : stat->read_latency_ticks += tsc_diff;
1306 0 : if (stat->max_read_latency_ticks < tsc_diff) {
1307 0 : stat->max_read_latency_ticks = tsc_diff;
1308 : }
1309 0 : if (stat->min_read_latency_ticks > tsc_diff) {
1310 0 : stat->min_read_latency_ticks = tsc_diff;
1311 : }
1312 : } else {
1313 0 : stat->bytes_written += num_blocks * blocklen;
1314 0 : stat->num_write_ops++;
1315 0 : stat->write_latency_ticks += tsc_diff;
1316 0 : if (stat->max_write_latency_ticks < tsc_diff) {
1317 0 : stat->max_write_latency_ticks = tsc_diff;
1318 : }
1319 0 : if (stat->min_write_latency_ticks > tsc_diff) {
1320 0 : stat->min_write_latency_ticks = tsc_diff;
1321 : }
1322 : }
1323 0 : break;
1324 0 : case SPDK_BDEV_IO_TYPE_COPY:
1325 0 : stat->bytes_copied += num_blocks * blocklen;
1326 0 : stat->num_copy_ops++;
1327 0 : stat->copy_latency_ticks += tsc_diff;
1328 0 : if (stat->max_copy_latency_ticks < tsc_diff) {
1329 0 : stat->max_copy_latency_ticks = tsc_diff;
1330 : }
1331 0 : if (stat->min_copy_latency_ticks > tsc_diff) {
1332 0 : stat->min_copy_latency_ticks = tsc_diff;
1333 : }
1334 0 : break;
1335 0 : default:
1336 0 : break;
1337 : }
1338 : }
1339 :
1340 : static bool
1341 7 : bdev_nvme_check_retry_io(struct nvme_bdev_io *bio,
1342 : const struct spdk_nvme_cpl *cpl,
1343 : struct nvme_bdev_channel *nbdev_ch,
1344 : uint64_t *_delay_ms)
1345 : {
1346 7 : struct nvme_io_path *io_path = bio->io_path;
1347 7 : struct nvme_ctrlr *nvme_ctrlr = io_path->qpair->ctrlr;
1348 : const struct spdk_nvme_ctrlr_data *cdata;
1349 :
1350 7 : if (spdk_nvme_cpl_is_path_error(cpl) ||
1351 5 : spdk_nvme_cpl_is_aborted_sq_deletion(cpl) ||
1352 4 : !nvme_io_path_is_available(io_path) ||
1353 4 : !nvme_ctrlr_is_available(nvme_ctrlr)) {
1354 3 : bdev_nvme_clear_current_io_path(nbdev_ch);
1355 3 : bio->io_path = NULL;
1356 3 : if (spdk_nvme_cpl_is_ana_error(cpl)) {
1357 1 : if (nvme_ctrlr_read_ana_log_page(nvme_ctrlr) == 0) {
1358 1 : io_path->nvme_ns->ana_state_updating = true;
1359 : }
1360 : }
1361 3 : if (!any_io_path_may_become_available(nbdev_ch)) {
1362 0 : return false;
1363 : }
1364 3 : *_delay_ms = 0;
1365 : } else {
1366 4 : bio->retry_count++;
1367 :
1368 4 : cdata = spdk_nvme_ctrlr_get_data(nvme_ctrlr->ctrlr);
1369 :
1370 4 : if (cpl->status.crd != 0) {
1371 1 : *_delay_ms = cdata->crdt[cpl->status.crd] * 100;
1372 : } else {
1373 3 : *_delay_ms = 0;
1374 : }
1375 : }
1376 :
1377 7 : return true;
1378 : }
1379 :
1380 : static inline void
1381 32 : bdev_nvme_io_complete_nvme_status(struct nvme_bdev_io *bio,
1382 : const struct spdk_nvme_cpl *cpl)
1383 : {
1384 32 : struct spdk_bdev_io *bdev_io = spdk_bdev_io_from_ctx(bio);
1385 : struct nvme_bdev_channel *nbdev_ch;
1386 32 : uint64_t delay_ms;
1387 :
1388 32 : assert(!bdev_nvme_io_type_is_admin(bdev_io->type));
1389 :
1390 32 : if (spdk_likely(spdk_nvme_cpl_is_success(cpl))) {
1391 20 : bdev_nvme_update_io_path_stat(bio);
1392 20 : goto complete;
1393 : }
1394 :
1395 : /* Update error counts before deciding if retry is needed.
1396 : * Hence, error counts may be more than the number of I/O errors.
1397 : */
1398 12 : bdev_nvme_update_nvme_error_stat(bdev_io, cpl);
1399 :
1400 12 : if (cpl->status.dnr != 0 || spdk_nvme_cpl_is_aborted_by_request(cpl) ||
1401 8 : (g_opts.bdev_retry_count != -1 && bio->retry_count >= g_opts.bdev_retry_count)) {
1402 5 : goto complete;
1403 : }
1404 :
1405 : /* At this point we don't know whether the sequence was successfully executed or not, so we
1406 : * cannot retry the IO */
1407 7 : if (bdev_io->u.bdev.accel_sequence != NULL) {
1408 0 : goto complete;
1409 : }
1410 :
1411 7 : nbdev_ch = spdk_io_channel_get_ctx(spdk_bdev_io_get_io_channel(bdev_io));
1412 :
1413 7 : if (bdev_nvme_check_retry_io(bio, cpl, nbdev_ch, &delay_ms)) {
1414 7 : bdev_nvme_queue_retry_io(nbdev_ch, bio, delay_ms);
1415 7 : return;
1416 : }
1417 :
1418 25 : complete:
1419 25 : bio->retry_count = 0;
1420 25 : bio->submit_tsc = 0;
1421 25 : bdev_io->u.bdev.accel_sequence = NULL;
1422 25 : __bdev_nvme_io_complete(bdev_io, 0, cpl);
1423 : }
1424 :
1425 : static inline void
1426 11 : bdev_nvme_io_complete(struct nvme_bdev_io *bio, int rc)
1427 : {
1428 11 : struct spdk_bdev_io *bdev_io = spdk_bdev_io_from_ctx(bio);
1429 : struct nvme_bdev_channel *nbdev_ch;
1430 : enum spdk_bdev_io_status io_status;
1431 :
1432 11 : assert(!bdev_nvme_io_type_is_admin(bdev_io->type));
1433 :
1434 11 : switch (rc) {
1435 1 : case 0:
1436 1 : io_status = SPDK_BDEV_IO_STATUS_SUCCESS;
1437 1 : break;
1438 0 : case -ENOMEM:
1439 0 : io_status = SPDK_BDEV_IO_STATUS_NOMEM;
1440 0 : break;
1441 10 : case -ENXIO:
1442 10 : if (g_opts.bdev_retry_count == -1 || bio->retry_count < g_opts.bdev_retry_count) {
1443 10 : nbdev_ch = spdk_io_channel_get_ctx(spdk_bdev_io_get_io_channel(bdev_io));
1444 :
1445 10 : bdev_nvme_clear_current_io_path(nbdev_ch);
1446 10 : bio->io_path = NULL;
1447 :
1448 10 : if (any_io_path_may_become_available(nbdev_ch)) {
1449 8 : bdev_nvme_queue_retry_io(nbdev_ch, bio, 1000ULL);
1450 8 : return;
1451 : }
1452 : }
1453 :
1454 : /* fallthrough */
1455 : default:
1456 2 : spdk_accel_sequence_abort(bdev_io->u.bdev.accel_sequence);
1457 2 : bdev_io->u.bdev.accel_sequence = NULL;
1458 2 : io_status = SPDK_BDEV_IO_STATUS_FAILED;
1459 2 : break;
1460 : }
1461 :
1462 3 : bio->retry_count = 0;
1463 3 : bio->submit_tsc = 0;
1464 3 : __bdev_nvme_io_complete(bdev_io, io_status, NULL);
1465 : }
1466 :
1467 : static inline void
1468 4 : bdev_nvme_admin_complete(struct nvme_bdev_io *bio, int rc)
1469 : {
1470 4 : struct spdk_bdev_io *bdev_io = spdk_bdev_io_from_ctx(bio);
1471 : enum spdk_bdev_io_status io_status;
1472 :
1473 4 : switch (rc) {
1474 1 : case 0:
1475 1 : io_status = SPDK_BDEV_IO_STATUS_SUCCESS;
1476 1 : break;
1477 0 : case -ENOMEM:
1478 0 : io_status = SPDK_BDEV_IO_STATUS_NOMEM;
1479 0 : break;
1480 3 : case -ENXIO:
1481 : /* fallthrough */
1482 : default:
1483 3 : io_status = SPDK_BDEV_IO_STATUS_FAILED;
1484 3 : break;
1485 : }
1486 :
1487 4 : __bdev_nvme_io_complete(bdev_io, io_status, NULL);
1488 4 : }
1489 :
1490 : static void
1491 3 : bdev_nvme_clear_io_path_caches_done(struct spdk_io_channel_iter *i, int status)
1492 : {
1493 3 : struct nvme_ctrlr *nvme_ctrlr = spdk_io_channel_iter_get_io_device(i);
1494 :
1495 3 : pthread_mutex_lock(&nvme_ctrlr->mutex);
1496 :
1497 3 : assert(nvme_ctrlr->io_path_cache_clearing == true);
1498 3 : nvme_ctrlr->io_path_cache_clearing = false;
1499 :
1500 3 : if (!nvme_ctrlr_can_be_unregistered(nvme_ctrlr)) {
1501 3 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
1502 3 : return;
1503 : }
1504 :
1505 0 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
1506 :
1507 0 : nvme_ctrlr_unregister(nvme_ctrlr);
1508 : }
1509 :
1510 : static void
1511 320 : _bdev_nvme_clear_io_path_cache(struct nvme_qpair *nvme_qpair)
1512 : {
1513 : struct nvme_io_path *io_path;
1514 :
1515 459 : TAILQ_FOREACH(io_path, &nvme_qpair->io_path_list, tailq) {
1516 139 : if (io_path->nbdev_ch == NULL) {
1517 64 : continue;
1518 : }
1519 75 : bdev_nvme_clear_current_io_path(io_path->nbdev_ch);
1520 : }
1521 320 : }
1522 :
1523 : static void
1524 1 : bdev_nvme_clear_io_path_cache(struct spdk_io_channel_iter *i)
1525 : {
1526 1 : struct spdk_io_channel *_ch = spdk_io_channel_iter_get_channel(i);
1527 1 : struct nvme_ctrlr_channel *ctrlr_ch = spdk_io_channel_get_ctx(_ch);
1528 :
1529 1 : assert(ctrlr_ch->qpair != NULL);
1530 :
1531 1 : _bdev_nvme_clear_io_path_cache(ctrlr_ch->qpair);
1532 :
1533 1 : spdk_for_each_channel_continue(i, 0);
1534 1 : }
1535 :
1536 : static void
1537 3 : bdev_nvme_clear_io_path_caches(struct nvme_ctrlr *nvme_ctrlr)
1538 : {
1539 3 : pthread_mutex_lock(&nvme_ctrlr->mutex);
1540 3 : if (!nvme_ctrlr_is_available(nvme_ctrlr) ||
1541 : nvme_ctrlr->io_path_cache_clearing) {
1542 0 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
1543 0 : return;
1544 : }
1545 :
1546 3 : nvme_ctrlr->io_path_cache_clearing = true;
1547 3 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
1548 :
1549 3 : spdk_for_each_channel(nvme_ctrlr,
1550 : bdev_nvme_clear_io_path_cache,
1551 : NULL,
1552 : bdev_nvme_clear_io_path_caches_done);
1553 : }
1554 :
1555 : static struct nvme_qpair *
1556 99 : nvme_poll_group_get_qpair(struct nvme_poll_group *group, struct spdk_nvme_qpair *qpair)
1557 : {
1558 : struct nvme_qpair *nvme_qpair;
1559 :
1560 108 : TAILQ_FOREACH(nvme_qpair, &group->qpair_list, tailq) {
1561 108 : if (nvme_qpair->qpair == qpair) {
1562 99 : break;
1563 : }
1564 : }
1565 :
1566 99 : return nvme_qpair;
1567 : }
1568 :
1569 : static void nvme_qpair_delete(struct nvme_qpair *nvme_qpair);
1570 :
1571 : static void
1572 99 : bdev_nvme_disconnected_qpair_cb(struct spdk_nvme_qpair *qpair, void *poll_group_ctx)
1573 : {
1574 99 : struct nvme_poll_group *group = poll_group_ctx;
1575 : struct nvme_qpair *nvme_qpair;
1576 : struct nvme_ctrlr_channel *ctrlr_ch;
1577 : int status;
1578 :
1579 99 : nvme_qpair = nvme_poll_group_get_qpair(group, qpair);
1580 99 : if (nvme_qpair == NULL) {
1581 0 : return;
1582 : }
1583 :
1584 99 : if (nvme_qpair->qpair != NULL) {
1585 99 : spdk_nvme_ctrlr_free_io_qpair(nvme_qpair->qpair);
1586 99 : nvme_qpair->qpair = NULL;
1587 : }
1588 :
1589 99 : _bdev_nvme_clear_io_path_cache(nvme_qpair);
1590 :
1591 99 : ctrlr_ch = nvme_qpair->ctrlr_ch;
1592 :
1593 99 : if (ctrlr_ch != NULL) {
1594 56 : if (ctrlr_ch->reset_iter != NULL) {
1595 : /* We are in a full reset sequence. */
1596 52 : if (ctrlr_ch->connect_poller != NULL) {
1597 : /* qpair was failed to connect. Abort the reset sequence. */
1598 0 : SPDK_DEBUGLOG(bdev_nvme, "qpair %p was failed to connect. abort the reset ctrlr sequence.\n",
1599 : qpair);
1600 0 : spdk_poller_unregister(&ctrlr_ch->connect_poller);
1601 0 : status = -1;
1602 : } else {
1603 : /* qpair was completed to disconnect. Just move to the next ctrlr_channel. */
1604 52 : SPDK_DEBUGLOG(bdev_nvme, "qpair %p was disconnected and freed in a reset ctrlr sequence.\n",
1605 : qpair);
1606 52 : status = 0;
1607 : }
1608 52 : spdk_for_each_channel_continue(ctrlr_ch->reset_iter, status);
1609 52 : ctrlr_ch->reset_iter = NULL;
1610 : } else {
1611 : /* qpair was disconnected unexpectedly. Reset controller for recovery. */
1612 4 : SPDK_NOTICELOG("qpair %p was disconnected and freed. reset controller.\n", qpair);
1613 4 : bdev_nvme_failover_ctrlr(nvme_qpair->ctrlr);
1614 : }
1615 : } else {
1616 : /* In this case, ctrlr_channel is already deleted. */
1617 43 : SPDK_DEBUGLOG(bdev_nvme, "qpair %p was disconnected and freed. delete nvme_qpair.\n", qpair);
1618 43 : nvme_qpair_delete(nvme_qpair);
1619 : }
1620 : }
1621 :
1622 : static void
1623 0 : bdev_nvme_check_io_qpairs(struct nvme_poll_group *group)
1624 : {
1625 : struct nvme_qpair *nvme_qpair;
1626 :
1627 0 : TAILQ_FOREACH(nvme_qpair, &group->qpair_list, tailq) {
1628 0 : if (nvme_qpair->qpair == NULL || nvme_qpair->ctrlr_ch == NULL) {
1629 0 : continue;
1630 : }
1631 :
1632 0 : if (spdk_nvme_qpair_get_failure_reason(nvme_qpair->qpair) !=
1633 : SPDK_NVME_QPAIR_FAILURE_NONE) {
1634 0 : _bdev_nvme_clear_io_path_cache(nvme_qpair);
1635 : }
1636 : }
1637 0 : }
1638 :
1639 : static int
1640 1025 : bdev_nvme_poll(void *arg)
1641 : {
1642 1025 : struct nvme_poll_group *group = arg;
1643 : int64_t num_completions;
1644 :
1645 1025 : if (group->collect_spin_stat && group->start_ticks == 0) {
1646 0 : group->start_ticks = spdk_get_ticks();
1647 : }
1648 :
1649 1025 : num_completions = spdk_nvme_poll_group_process_completions(group->group, 0,
1650 : bdev_nvme_disconnected_qpair_cb);
1651 1025 : if (group->collect_spin_stat) {
1652 0 : if (num_completions > 0) {
1653 0 : if (group->end_ticks != 0) {
1654 0 : group->spin_ticks += (group->end_ticks - group->start_ticks);
1655 0 : group->end_ticks = 0;
1656 : }
1657 0 : group->start_ticks = 0;
1658 : } else {
1659 0 : group->end_ticks = spdk_get_ticks();
1660 : }
1661 : }
1662 :
1663 1025 : if (spdk_unlikely(num_completions < 0)) {
1664 0 : bdev_nvme_check_io_qpairs(group);
1665 : }
1666 :
1667 1025 : return num_completions > 0 ? SPDK_POLLER_BUSY : SPDK_POLLER_IDLE;
1668 : }
1669 :
1670 : static int bdev_nvme_poll_adminq(void *arg);
1671 :
1672 : static void
1673 100 : bdev_nvme_change_adminq_poll_period(struct nvme_ctrlr *nvme_ctrlr, uint64_t new_period_us)
1674 : {
1675 100 : spdk_poller_unregister(&nvme_ctrlr->adminq_timer_poller);
1676 :
1677 100 : nvme_ctrlr->adminq_timer_poller = SPDK_POLLER_REGISTER(bdev_nvme_poll_adminq,
1678 : nvme_ctrlr, new_period_us);
1679 100 : }
1680 :
1681 : static int
1682 146 : bdev_nvme_poll_adminq(void *arg)
1683 : {
1684 : int32_t rc;
1685 146 : struct nvme_ctrlr *nvme_ctrlr = arg;
1686 : nvme_ctrlr_disconnected_cb disconnected_cb;
1687 :
1688 146 : assert(nvme_ctrlr != NULL);
1689 :
1690 146 : rc = spdk_nvme_ctrlr_process_admin_completions(nvme_ctrlr->ctrlr);
1691 146 : if (rc < 0) {
1692 53 : disconnected_cb = nvme_ctrlr->disconnected_cb;
1693 53 : nvme_ctrlr->disconnected_cb = NULL;
1694 :
1695 53 : if (disconnected_cb != NULL) {
1696 50 : bdev_nvme_change_adminq_poll_period(nvme_ctrlr,
1697 : g_opts.nvme_adminq_poll_period_us);
1698 50 : disconnected_cb(nvme_ctrlr);
1699 : } else {
1700 3 : bdev_nvme_failover_ctrlr(nvme_ctrlr);
1701 : }
1702 93 : } else if (spdk_nvme_ctrlr_get_admin_qp_failure_reason(nvme_ctrlr->ctrlr) !=
1703 : SPDK_NVME_QPAIR_FAILURE_NONE) {
1704 0 : bdev_nvme_clear_io_path_caches(nvme_ctrlr);
1705 : }
1706 :
1707 146 : return rc == 0 ? SPDK_POLLER_IDLE : SPDK_POLLER_BUSY;
1708 : }
1709 :
1710 : static void
1711 37 : nvme_bdev_free(void *io_device)
1712 : {
1713 37 : struct nvme_bdev *nvme_disk = io_device;
1714 :
1715 37 : pthread_mutex_destroy(&nvme_disk->mutex);
1716 37 : free(nvme_disk->disk.name);
1717 37 : free(nvme_disk->err_stat);
1718 37 : free(nvme_disk);
1719 37 : }
1720 :
1721 : static int
1722 36 : bdev_nvme_destruct(void *ctx)
1723 : {
1724 36 : struct nvme_bdev *nvme_disk = ctx;
1725 : struct nvme_ns *nvme_ns, *tmp_nvme_ns;
1726 :
1727 : SPDK_DTRACE_PROBE2(bdev_nvme_destruct, nvme_disk->nbdev_ctrlr->name, nvme_disk->nsid);
1728 :
1729 73 : TAILQ_FOREACH_SAFE(nvme_ns, &nvme_disk->nvme_ns_list, tailq, tmp_nvme_ns) {
1730 37 : pthread_mutex_lock(&nvme_ns->ctrlr->mutex);
1731 :
1732 37 : nvme_ns->bdev = NULL;
1733 :
1734 37 : assert(nvme_ns->id > 0);
1735 :
1736 37 : if (nvme_ctrlr_get_ns(nvme_ns->ctrlr, nvme_ns->id) == NULL) {
1737 0 : pthread_mutex_unlock(&nvme_ns->ctrlr->mutex);
1738 :
1739 0 : nvme_ctrlr_release(nvme_ns->ctrlr);
1740 0 : nvme_ns_free(nvme_ns);
1741 : } else {
1742 37 : pthread_mutex_unlock(&nvme_ns->ctrlr->mutex);
1743 : }
1744 : }
1745 :
1746 36 : pthread_mutex_lock(&g_bdev_nvme_mutex);
1747 36 : TAILQ_REMOVE(&nvme_disk->nbdev_ctrlr->bdevs, nvme_disk, tailq);
1748 36 : pthread_mutex_unlock(&g_bdev_nvme_mutex);
1749 :
1750 36 : spdk_io_device_unregister(nvme_disk, nvme_bdev_free);
1751 :
1752 36 : return 0;
1753 : }
1754 :
1755 : static int
1756 100 : bdev_nvme_create_qpair(struct nvme_qpair *nvme_qpair)
1757 : {
1758 : struct nvme_ctrlr *nvme_ctrlr;
1759 100 : struct spdk_nvme_io_qpair_opts opts;
1760 : struct spdk_nvme_qpair *qpair;
1761 : int rc;
1762 :
1763 100 : nvme_ctrlr = nvme_qpair->ctrlr;
1764 :
1765 100 : spdk_nvme_ctrlr_get_default_io_qpair_opts(nvme_ctrlr->ctrlr, &opts, sizeof(opts));
1766 100 : opts.delay_cmd_submit = g_opts.delay_cmd_submit;
1767 100 : opts.create_only = true;
1768 100 : opts.async_mode = true;
1769 100 : opts.io_queue_requests = spdk_max(g_opts.io_queue_requests, opts.io_queue_requests);
1770 100 : g_opts.io_queue_requests = opts.io_queue_requests;
1771 :
1772 100 : qpair = spdk_nvme_ctrlr_alloc_io_qpair(nvme_ctrlr->ctrlr, &opts, sizeof(opts));
1773 100 : if (qpair == NULL) {
1774 0 : return -1;
1775 : }
1776 :
1777 : SPDK_DTRACE_PROBE3(bdev_nvme_create_qpair, nvme_ctrlr->nbdev_ctrlr->name,
1778 : spdk_nvme_qpair_get_id(qpair), spdk_thread_get_id(nvme_ctrlr->thread));
1779 :
1780 100 : assert(nvme_qpair->group != NULL);
1781 :
1782 100 : rc = spdk_nvme_poll_group_add(nvme_qpair->group->group, qpair);
1783 100 : if (rc != 0) {
1784 0 : SPDK_ERRLOG("Unable to begin polling on NVMe Channel.\n");
1785 0 : goto err;
1786 : }
1787 :
1788 100 : rc = spdk_nvme_ctrlr_connect_io_qpair(nvme_ctrlr->ctrlr, qpair);
1789 100 : if (rc != 0) {
1790 0 : SPDK_ERRLOG("Unable to connect I/O qpair.\n");
1791 0 : goto err;
1792 : }
1793 :
1794 100 : nvme_qpair->qpair = qpair;
1795 :
1796 100 : if (!g_opts.disable_auto_failback) {
1797 71 : _bdev_nvme_clear_io_path_cache(nvme_qpair);
1798 : }
1799 :
1800 100 : return 0;
1801 :
1802 0 : err:
1803 0 : spdk_nvme_ctrlr_free_io_qpair(qpair);
1804 :
1805 0 : return rc;
1806 : }
1807 :
1808 : static void bdev_nvme_reset_io_continue(void *cb_arg, int rc);
1809 :
1810 : static void
1811 82 : bdev_nvme_complete_pending_resets(struct spdk_io_channel_iter *i)
1812 : {
1813 82 : struct spdk_io_channel *_ch = spdk_io_channel_iter_get_channel(i);
1814 82 : struct nvme_ctrlr_channel *ctrlr_ch = spdk_io_channel_get_ctx(_ch);
1815 82 : int rc = 0;
1816 : struct spdk_bdev_io *bdev_io;
1817 : struct nvme_bdev_io *bio;
1818 :
1819 82 : if (spdk_io_channel_iter_get_ctx(i) != NULL) {
1820 35 : rc = -1;
1821 : }
1822 :
1823 86 : while (!TAILQ_EMPTY(&ctrlr_ch->pending_resets)) {
1824 4 : bdev_io = TAILQ_FIRST(&ctrlr_ch->pending_resets);
1825 4 : TAILQ_REMOVE(&ctrlr_ch->pending_resets, bdev_io, module_link);
1826 :
1827 4 : bio = (struct nvme_bdev_io *)bdev_io->driver_ctx;
1828 4 : bdev_nvme_reset_io_continue(bio, rc);
1829 : }
1830 :
1831 82 : spdk_for_each_channel_continue(i, 0);
1832 82 : }
1833 :
1834 : /* This function marks the current trid as failed by storing the current ticks
1835 : * and then sets the next trid to the active trid within a controller if exists.
1836 : *
1837 : * The purpose of the boolean return value is to request the caller to disconnect
1838 : * the current trid now to try connecting the next trid.
1839 : */
1840 : static bool
1841 36 : bdev_nvme_failover_trid(struct nvme_ctrlr *nvme_ctrlr, bool remove, bool start)
1842 : {
1843 : struct nvme_path_id *path_id, *next_path;
1844 : int rc __attribute__((unused));
1845 :
1846 36 : path_id = TAILQ_FIRST(&nvme_ctrlr->trids);
1847 36 : assert(path_id);
1848 36 : assert(path_id == nvme_ctrlr->active_path_id);
1849 36 : next_path = TAILQ_NEXT(path_id, link);
1850 :
1851 : /* Update the last failed time. It means the trid is failed if its last
1852 : * failed time is non-zero.
1853 : */
1854 36 : path_id->last_failed_tsc = spdk_get_ticks();
1855 :
1856 36 : if (next_path == NULL) {
1857 : /* There is no alternate trid within a controller. */
1858 25 : return false;
1859 : }
1860 :
1861 11 : if (!start && nvme_ctrlr->opts.reconnect_delay_sec == 0) {
1862 : /* Connect is not retried in a controller reset sequence. Connecting
1863 : * the next trid will be done by the next bdev_nvme_failover_ctrlr() call.
1864 : */
1865 3 : return false;
1866 : }
1867 :
1868 8 : assert(path_id->trid.trtype != SPDK_NVME_TRANSPORT_PCIE);
1869 :
1870 8 : SPDK_NOTICELOG("Start failover from %s:%s to %s:%s\n", path_id->trid.traddr,
1871 : path_id->trid.trsvcid, next_path->trid.traddr, next_path->trid.trsvcid);
1872 :
1873 8 : spdk_nvme_ctrlr_fail(nvme_ctrlr->ctrlr);
1874 8 : nvme_ctrlr->active_path_id = next_path;
1875 8 : rc = spdk_nvme_ctrlr_set_trid(nvme_ctrlr->ctrlr, &next_path->trid);
1876 8 : assert(rc == 0);
1877 8 : TAILQ_REMOVE(&nvme_ctrlr->trids, path_id, link);
1878 8 : if (!remove) {
1879 : /** Shuffle the old trid to the end of the list and use the new one.
1880 : * Allows for round robin through multiple connections.
1881 : */
1882 6 : TAILQ_INSERT_TAIL(&nvme_ctrlr->trids, path_id, link);
1883 : } else {
1884 2 : free(path_id);
1885 : }
1886 :
1887 8 : if (start || next_path->last_failed_tsc == 0) {
1888 : /* bdev_nvme_failover_ctrlr() is just called or the next trid is not failed
1889 : * or used yet. Try the next trid now.
1890 : */
1891 7 : return true;
1892 : }
1893 :
1894 1 : if (spdk_get_ticks() > next_path->last_failed_tsc + spdk_get_ticks_hz() *
1895 1 : nvme_ctrlr->opts.reconnect_delay_sec) {
1896 : /* Enough backoff passed since the next trid failed. Try the next trid now. */
1897 0 : return true;
1898 : }
1899 :
1900 : /* The next trid will be tried after reconnect_delay_sec seconds. */
1901 1 : return false;
1902 : }
1903 :
1904 : static bool
1905 68 : bdev_nvme_check_ctrlr_loss_timeout(struct nvme_ctrlr *nvme_ctrlr)
1906 : {
1907 : int32_t elapsed;
1908 :
1909 68 : if (nvme_ctrlr->opts.ctrlr_loss_timeout_sec == 0 ||
1910 36 : nvme_ctrlr->opts.ctrlr_loss_timeout_sec == -1) {
1911 42 : return false;
1912 : }
1913 :
1914 26 : elapsed = (spdk_get_ticks() - nvme_ctrlr->reset_start_tsc) / spdk_get_ticks_hz();
1915 26 : if (elapsed >= nvme_ctrlr->opts.ctrlr_loss_timeout_sec) {
1916 6 : return true;
1917 : } else {
1918 20 : return false;
1919 : }
1920 : }
1921 :
1922 : static bool
1923 12 : bdev_nvme_check_fast_io_fail_timeout(struct nvme_ctrlr *nvme_ctrlr)
1924 : {
1925 : uint32_t elapsed;
1926 :
1927 12 : if (nvme_ctrlr->opts.fast_io_fail_timeout_sec == 0) {
1928 8 : return false;
1929 : }
1930 :
1931 4 : elapsed = (spdk_get_ticks() - nvme_ctrlr->reset_start_tsc) / spdk_get_ticks_hz();
1932 4 : if (elapsed >= nvme_ctrlr->opts.fast_io_fail_timeout_sec) {
1933 2 : return true;
1934 : } else {
1935 2 : return false;
1936 : }
1937 : }
1938 :
1939 : static void bdev_nvme_reset_ctrlr_complete(struct nvme_ctrlr *nvme_ctrlr, bool success);
1940 :
1941 : static void
1942 51 : nvme_ctrlr_disconnect(struct nvme_ctrlr *nvme_ctrlr, nvme_ctrlr_disconnected_cb cb_fn)
1943 : {
1944 : int rc;
1945 :
1946 51 : rc = spdk_nvme_ctrlr_disconnect(nvme_ctrlr->ctrlr);
1947 51 : if (rc != 0) {
1948 : /* Disconnect fails if ctrlr is already resetting or removed. In this case,
1949 : * fail the reset sequence immediately.
1950 : */
1951 1 : bdev_nvme_reset_ctrlr_complete(nvme_ctrlr, false);
1952 1 : return;
1953 : }
1954 :
1955 : /* spdk_nvme_ctrlr_disconnect() may complete asynchronously later by polling adminq.
1956 : * Set callback here to execute the specified operation after ctrlr is really disconnected.
1957 : */
1958 50 : assert(nvme_ctrlr->disconnected_cb == NULL);
1959 50 : nvme_ctrlr->disconnected_cb = cb_fn;
1960 :
1961 : /* During disconnection, reduce the period to poll adminq more often. */
1962 50 : bdev_nvme_change_adminq_poll_period(nvme_ctrlr, 0);
1963 : }
1964 :
1965 : enum bdev_nvme_op_after_reset {
1966 : OP_NONE,
1967 : OP_COMPLETE_PENDING_DESTRUCT,
1968 : OP_DESTRUCT,
1969 : OP_DELAYED_RECONNECT,
1970 : OP_FAILOVER,
1971 : };
1972 :
1973 : typedef enum bdev_nvme_op_after_reset _bdev_nvme_op_after_reset;
1974 :
1975 : static _bdev_nvme_op_after_reset
1976 50 : bdev_nvme_check_op_after_reset(struct nvme_ctrlr *nvme_ctrlr, bool success)
1977 : {
1978 50 : if (nvme_ctrlr_can_be_unregistered(nvme_ctrlr)) {
1979 : /* Complete pending destruct after reset completes. */
1980 0 : return OP_COMPLETE_PENDING_DESTRUCT;
1981 50 : } else if (nvme_ctrlr->pending_failover) {
1982 3 : nvme_ctrlr->pending_failover = false;
1983 3 : nvme_ctrlr->reset_start_tsc = 0;
1984 3 : return OP_FAILOVER;
1985 47 : } else if (success || nvme_ctrlr->opts.reconnect_delay_sec == 0) {
1986 33 : nvme_ctrlr->reset_start_tsc = 0;
1987 33 : return OP_NONE;
1988 14 : } else if (bdev_nvme_check_ctrlr_loss_timeout(nvme_ctrlr)) {
1989 2 : return OP_DESTRUCT;
1990 : } else {
1991 12 : if (bdev_nvme_check_fast_io_fail_timeout(nvme_ctrlr)) {
1992 2 : nvme_ctrlr->fast_io_fail_timedout = true;
1993 : }
1994 12 : return OP_DELAYED_RECONNECT;
1995 : }
1996 : }
1997 :
1998 : static int bdev_nvme_delete_ctrlr(struct nvme_ctrlr *nvme_ctrlr, bool hotplug);
1999 : static void bdev_nvme_reconnect_ctrlr(struct nvme_ctrlr *nvme_ctrlr);
2000 :
2001 : static int
2002 9 : bdev_nvme_reconnect_delay_timer_expired(void *ctx)
2003 : {
2004 9 : struct nvme_ctrlr *nvme_ctrlr = ctx;
2005 :
2006 : SPDK_DTRACE_PROBE1(bdev_nvme_ctrlr_reconnect_delay, nvme_ctrlr->nbdev_ctrlr->name);
2007 9 : pthread_mutex_lock(&nvme_ctrlr->mutex);
2008 :
2009 9 : spdk_poller_unregister(&nvme_ctrlr->reconnect_delay_timer);
2010 :
2011 9 : if (!nvme_ctrlr->reconnect_is_delayed) {
2012 0 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
2013 0 : return SPDK_POLLER_BUSY;
2014 : }
2015 :
2016 9 : nvme_ctrlr->reconnect_is_delayed = false;
2017 :
2018 9 : if (nvme_ctrlr->destruct) {
2019 0 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
2020 0 : return SPDK_POLLER_BUSY;
2021 : }
2022 :
2023 9 : assert(nvme_ctrlr->resetting == false);
2024 9 : nvme_ctrlr->resetting = true;
2025 :
2026 9 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
2027 :
2028 9 : spdk_poller_resume(nvme_ctrlr->adminq_timer_poller);
2029 :
2030 9 : bdev_nvme_reconnect_ctrlr(nvme_ctrlr);
2031 9 : return SPDK_POLLER_BUSY;
2032 : }
2033 :
2034 : static void
2035 12 : bdev_nvme_start_reconnect_delay_timer(struct nvme_ctrlr *nvme_ctrlr)
2036 : {
2037 12 : spdk_poller_pause(nvme_ctrlr->adminq_timer_poller);
2038 :
2039 12 : assert(nvme_ctrlr->reconnect_is_delayed == false);
2040 12 : nvme_ctrlr->reconnect_is_delayed = true;
2041 :
2042 12 : assert(nvme_ctrlr->reconnect_delay_timer == NULL);
2043 12 : nvme_ctrlr->reconnect_delay_timer = SPDK_POLLER_REGISTER(bdev_nvme_reconnect_delay_timer_expired,
2044 : nvme_ctrlr,
2045 : nvme_ctrlr->opts.reconnect_delay_sec * SPDK_SEC_TO_USEC);
2046 12 : }
2047 :
2048 : static void remove_discovery_entry(struct nvme_ctrlr *nvme_ctrlr);
2049 :
2050 : static void
2051 48 : _bdev_nvme_reset_ctrlr_complete(struct spdk_io_channel_iter *i, int status)
2052 : {
2053 48 : struct nvme_ctrlr *nvme_ctrlr = spdk_io_channel_iter_get_io_device(i);
2054 48 : bool success = spdk_io_channel_iter_get_ctx(i) == NULL;
2055 48 : bdev_nvme_ctrlr_op_cb ctrlr_op_cb_fn = nvme_ctrlr->ctrlr_op_cb_fn;
2056 48 : void *ctrlr_op_cb_arg = nvme_ctrlr->ctrlr_op_cb_arg;
2057 : enum bdev_nvme_op_after_reset op_after_reset;
2058 :
2059 48 : assert(nvme_ctrlr->thread == spdk_get_thread());
2060 :
2061 48 : nvme_ctrlr->ctrlr_op_cb_fn = NULL;
2062 48 : nvme_ctrlr->ctrlr_op_cb_arg = NULL;
2063 :
2064 48 : if (!success) {
2065 21 : SPDK_ERRLOG("Resetting controller failed.\n");
2066 : } else {
2067 27 : SPDK_NOTICELOG("Resetting controller successful.\n");
2068 : }
2069 :
2070 48 : pthread_mutex_lock(&nvme_ctrlr->mutex);
2071 48 : nvme_ctrlr->resetting = false;
2072 48 : nvme_ctrlr->dont_retry = false;
2073 48 : nvme_ctrlr->in_failover = false;
2074 :
2075 48 : op_after_reset = bdev_nvme_check_op_after_reset(nvme_ctrlr, success);
2076 48 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
2077 :
2078 : /* Delay callbacks when the next operation is a failover. */
2079 48 : if (ctrlr_op_cb_fn && op_after_reset != OP_FAILOVER) {
2080 10 : ctrlr_op_cb_fn(ctrlr_op_cb_arg, success ? 0 : -1);
2081 : }
2082 :
2083 48 : switch (op_after_reset) {
2084 0 : case OP_COMPLETE_PENDING_DESTRUCT:
2085 0 : nvme_ctrlr_unregister(nvme_ctrlr);
2086 0 : break;
2087 2 : case OP_DESTRUCT:
2088 2 : bdev_nvme_delete_ctrlr(nvme_ctrlr, false);
2089 2 : remove_discovery_entry(nvme_ctrlr);
2090 2 : break;
2091 12 : case OP_DELAYED_RECONNECT:
2092 12 : nvme_ctrlr_disconnect(nvme_ctrlr, bdev_nvme_start_reconnect_delay_timer);
2093 12 : break;
2094 3 : case OP_FAILOVER:
2095 3 : nvme_ctrlr->ctrlr_op_cb_fn = ctrlr_op_cb_fn;
2096 3 : nvme_ctrlr->ctrlr_op_cb_arg = ctrlr_op_cb_arg;
2097 3 : bdev_nvme_failover_ctrlr(nvme_ctrlr);
2098 3 : break;
2099 31 : default:
2100 31 : break;
2101 : }
2102 48 : }
2103 :
2104 : static void
2105 50 : bdev_nvme_reset_ctrlr_complete(struct nvme_ctrlr *nvme_ctrlr, bool success)
2106 : {
2107 50 : pthread_mutex_lock(&nvme_ctrlr->mutex);
2108 50 : if (!success) {
2109 : /* Connecting the active trid failed. Set the next alternate trid to the
2110 : * active trid if it exists.
2111 : */
2112 23 : if (bdev_nvme_failover_trid(nvme_ctrlr, false, false)) {
2113 : /* The next alternate trid exists and is ready to try. Try it now. */
2114 2 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
2115 :
2116 2 : nvme_ctrlr_disconnect(nvme_ctrlr, bdev_nvme_reconnect_ctrlr);
2117 2 : return;
2118 : }
2119 :
2120 : /* We came here if there is no alternate trid or if the next trid exists but
2121 : * is not ready to try. We will try the active trid after reconnect_delay_sec
2122 : * seconds if it is non-zero or at the next reset call otherwise.
2123 : */
2124 : } else {
2125 : /* Connecting the active trid succeeded. Clear the last failed time because it
2126 : * means the trid is failed if its last failed time is non-zero.
2127 : */
2128 27 : nvme_ctrlr->active_path_id->last_failed_tsc = 0;
2129 : }
2130 48 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
2131 :
2132 : /* Make sure we clear any pending resets before returning. */
2133 48 : spdk_for_each_channel(nvme_ctrlr,
2134 : bdev_nvme_complete_pending_resets,
2135 : success ? NULL : (void *)0x1,
2136 : _bdev_nvme_reset_ctrlr_complete);
2137 : }
2138 :
2139 : static void
2140 0 : bdev_nvme_reset_create_qpairs_failed(struct spdk_io_channel_iter *i, int status)
2141 : {
2142 0 : struct nvme_ctrlr *nvme_ctrlr = spdk_io_channel_iter_get_io_device(i);
2143 :
2144 0 : bdev_nvme_reset_ctrlr_complete(nvme_ctrlr, false);
2145 0 : }
2146 :
2147 : static void
2148 62 : bdev_nvme_reset_destroy_qpair(struct spdk_io_channel_iter *i)
2149 : {
2150 62 : struct spdk_io_channel *ch = spdk_io_channel_iter_get_channel(i);
2151 62 : struct nvme_ctrlr_channel *ctrlr_ch = spdk_io_channel_get_ctx(ch);
2152 : struct nvme_qpair *nvme_qpair;
2153 :
2154 62 : nvme_qpair = ctrlr_ch->qpair;
2155 62 : assert(nvme_qpair != NULL);
2156 :
2157 62 : _bdev_nvme_clear_io_path_cache(nvme_qpair);
2158 :
2159 62 : if (nvme_qpair->qpair != NULL) {
2160 52 : if (nvme_qpair->ctrlr->dont_retry) {
2161 39 : spdk_nvme_qpair_set_abort_dnr(nvme_qpair->qpair, true);
2162 : }
2163 52 : spdk_nvme_ctrlr_disconnect_io_qpair(nvme_qpair->qpair);
2164 :
2165 : /* The current full reset sequence will move to the next
2166 : * ctrlr_channel after the qpair is actually disconnected.
2167 : */
2168 52 : assert(ctrlr_ch->reset_iter == NULL);
2169 52 : ctrlr_ch->reset_iter = i;
2170 : } else {
2171 10 : spdk_for_each_channel_continue(i, 0);
2172 : }
2173 62 : }
2174 :
2175 : static void
2176 27 : bdev_nvme_reset_create_qpairs_done(struct spdk_io_channel_iter *i, int status)
2177 : {
2178 27 : struct nvme_ctrlr *nvme_ctrlr = spdk_io_channel_iter_get_io_device(i);
2179 :
2180 27 : if (status == 0) {
2181 27 : bdev_nvme_reset_ctrlr_complete(nvme_ctrlr, true);
2182 : } else {
2183 : /* Delete the added qpairs and quiesce ctrlr to make the states clean. */
2184 0 : spdk_for_each_channel(nvme_ctrlr,
2185 : bdev_nvme_reset_destroy_qpair,
2186 : NULL,
2187 : bdev_nvme_reset_create_qpairs_failed);
2188 : }
2189 27 : }
2190 :
2191 : static int
2192 43 : bdev_nvme_reset_check_qpair_connected(void *ctx)
2193 : {
2194 43 : struct nvme_ctrlr_channel *ctrlr_ch = ctx;
2195 :
2196 43 : if (ctrlr_ch->reset_iter == NULL) {
2197 : /* qpair was already failed to connect and the reset sequence is being aborted. */
2198 0 : assert(ctrlr_ch->connect_poller == NULL);
2199 0 : assert(ctrlr_ch->qpair->qpair == NULL);
2200 0 : return SPDK_POLLER_BUSY;
2201 : }
2202 :
2203 43 : assert(ctrlr_ch->qpair->qpair != NULL);
2204 :
2205 43 : if (!spdk_nvme_qpair_is_connected(ctrlr_ch->qpair->qpair)) {
2206 0 : return SPDK_POLLER_BUSY;
2207 : }
2208 :
2209 43 : spdk_poller_unregister(&ctrlr_ch->connect_poller);
2210 :
2211 : /* qpair was completed to connect. Move to the next ctrlr_channel */
2212 43 : spdk_for_each_channel_continue(ctrlr_ch->reset_iter, 0);
2213 43 : ctrlr_ch->reset_iter = NULL;
2214 :
2215 43 : if (!g_opts.disable_auto_failback) {
2216 30 : _bdev_nvme_clear_io_path_cache(ctrlr_ch->qpair);
2217 : }
2218 :
2219 43 : return SPDK_POLLER_BUSY;
2220 : }
2221 :
2222 : static void
2223 43 : bdev_nvme_reset_create_qpair(struct spdk_io_channel_iter *i)
2224 : {
2225 43 : struct spdk_io_channel *_ch = spdk_io_channel_iter_get_channel(i);
2226 43 : struct nvme_ctrlr_channel *ctrlr_ch = spdk_io_channel_get_ctx(_ch);
2227 : int rc;
2228 :
2229 43 : rc = bdev_nvme_create_qpair(ctrlr_ch->qpair);
2230 43 : if (rc == 0) {
2231 43 : ctrlr_ch->connect_poller = SPDK_POLLER_REGISTER(bdev_nvme_reset_check_qpair_connected,
2232 : ctrlr_ch, 0);
2233 :
2234 : /* The current full reset sequence will move to the next
2235 : * ctrlr_channel after the qpair is actually connected.
2236 : */
2237 43 : assert(ctrlr_ch->reset_iter == NULL);
2238 43 : ctrlr_ch->reset_iter = i;
2239 : } else {
2240 0 : spdk_for_each_channel_continue(i, rc);
2241 : }
2242 43 : }
2243 :
2244 : static void
2245 27 : nvme_ctrlr_check_namespaces(struct nvme_ctrlr *nvme_ctrlr)
2246 : {
2247 27 : struct spdk_nvme_ctrlr *ctrlr = nvme_ctrlr->ctrlr;
2248 : struct nvme_ns *nvme_ns;
2249 :
2250 39 : for (nvme_ns = nvme_ctrlr_get_first_active_ns(nvme_ctrlr);
2251 : nvme_ns != NULL;
2252 12 : nvme_ns = nvme_ctrlr_get_next_active_ns(nvme_ctrlr, nvme_ns)) {
2253 12 : if (!spdk_nvme_ctrlr_is_active_ns(ctrlr, nvme_ns->id)) {
2254 1 : SPDK_DEBUGLOG(bdev_nvme, "NSID %u was removed during reset.\n", nvme_ns->id);
2255 : /* NS can be added again. Just nullify nvme_ns->ns. */
2256 1 : nvme_ns->ns = NULL;
2257 : }
2258 : }
2259 27 : }
2260 :
2261 :
2262 : static int
2263 49 : bdev_nvme_reconnect_ctrlr_poll(void *arg)
2264 : {
2265 49 : struct nvme_ctrlr *nvme_ctrlr = arg;
2266 49 : int rc = -ETIMEDOUT;
2267 :
2268 49 : if (bdev_nvme_check_ctrlr_loss_timeout(nvme_ctrlr)) {
2269 : /* Mark the ctrlr as failed. The next call to
2270 : * spdk_nvme_ctrlr_reconnect_poll_async() will then
2271 : * do the necessary cleanup and return failure.
2272 : */
2273 2 : spdk_nvme_ctrlr_fail(nvme_ctrlr->ctrlr);
2274 : }
2275 :
2276 49 : rc = spdk_nvme_ctrlr_reconnect_poll_async(nvme_ctrlr->ctrlr);
2277 49 : if (rc == -EAGAIN) {
2278 0 : return SPDK_POLLER_BUSY;
2279 : }
2280 :
2281 49 : spdk_poller_unregister(&nvme_ctrlr->reset_detach_poller);
2282 49 : if (rc == 0) {
2283 27 : nvme_ctrlr_check_namespaces(nvme_ctrlr);
2284 :
2285 : /* Recreate all of the I/O queue pairs */
2286 27 : spdk_for_each_channel(nvme_ctrlr,
2287 : bdev_nvme_reset_create_qpair,
2288 : NULL,
2289 : bdev_nvme_reset_create_qpairs_done);
2290 : } else {
2291 22 : bdev_nvme_reset_ctrlr_complete(nvme_ctrlr, false);
2292 : }
2293 49 : return SPDK_POLLER_BUSY;
2294 : }
2295 :
2296 : static void
2297 49 : bdev_nvme_reconnect_ctrlr(struct nvme_ctrlr *nvme_ctrlr)
2298 : {
2299 49 : spdk_nvme_ctrlr_reconnect_async(nvme_ctrlr->ctrlr);
2300 :
2301 : SPDK_DTRACE_PROBE1(bdev_nvme_ctrlr_reconnect, nvme_ctrlr->nbdev_ctrlr->name);
2302 49 : assert(nvme_ctrlr->reset_detach_poller == NULL);
2303 49 : nvme_ctrlr->reset_detach_poller = SPDK_POLLER_REGISTER(bdev_nvme_reconnect_ctrlr_poll,
2304 : nvme_ctrlr, 0);
2305 49 : }
2306 :
2307 : static void
2308 36 : bdev_nvme_reset_destroy_qpair_done(struct spdk_io_channel_iter *i, int status)
2309 : {
2310 36 : struct nvme_ctrlr *nvme_ctrlr = spdk_io_channel_iter_get_io_device(i);
2311 :
2312 : SPDK_DTRACE_PROBE1(bdev_nvme_ctrlr_reset, nvme_ctrlr->nbdev_ctrlr->name);
2313 36 : assert(status == 0);
2314 :
2315 36 : if (!spdk_nvme_ctrlr_is_fabrics(nvme_ctrlr->ctrlr)) {
2316 0 : bdev_nvme_reconnect_ctrlr(nvme_ctrlr);
2317 : } else {
2318 36 : nvme_ctrlr_disconnect(nvme_ctrlr, bdev_nvme_reconnect_ctrlr);
2319 : }
2320 36 : }
2321 :
2322 : static void
2323 36 : bdev_nvme_reset_destroy_qpairs(struct nvme_ctrlr *nvme_ctrlr)
2324 : {
2325 36 : spdk_for_each_channel(nvme_ctrlr,
2326 : bdev_nvme_reset_destroy_qpair,
2327 : NULL,
2328 : bdev_nvme_reset_destroy_qpair_done);
2329 36 : }
2330 :
2331 : static void
2332 3 : bdev_nvme_reconnect_ctrlr_now(void *ctx)
2333 : {
2334 3 : struct nvme_ctrlr *nvme_ctrlr = ctx;
2335 :
2336 3 : assert(nvme_ctrlr->resetting == true);
2337 3 : assert(nvme_ctrlr->thread == spdk_get_thread());
2338 :
2339 3 : spdk_poller_unregister(&nvme_ctrlr->reconnect_delay_timer);
2340 :
2341 3 : spdk_poller_resume(nvme_ctrlr->adminq_timer_poller);
2342 :
2343 3 : bdev_nvme_reconnect_ctrlr(nvme_ctrlr);
2344 3 : }
2345 :
2346 : static void
2347 36 : _bdev_nvme_reset_ctrlr(void *ctx)
2348 : {
2349 36 : struct nvme_ctrlr *nvme_ctrlr = ctx;
2350 :
2351 36 : assert(nvme_ctrlr->resetting == true);
2352 36 : assert(nvme_ctrlr->thread == spdk_get_thread());
2353 :
2354 36 : if (!spdk_nvme_ctrlr_is_fabrics(nvme_ctrlr->ctrlr)) {
2355 0 : nvme_ctrlr_disconnect(nvme_ctrlr, bdev_nvme_reset_destroy_qpairs);
2356 : } else {
2357 36 : bdev_nvme_reset_destroy_qpairs(nvme_ctrlr);
2358 : }
2359 36 : }
2360 :
2361 : static int
2362 34 : bdev_nvme_reset_ctrlr(struct nvme_ctrlr *nvme_ctrlr)
2363 : {
2364 : spdk_msg_fn msg_fn;
2365 :
2366 34 : pthread_mutex_lock(&nvme_ctrlr->mutex);
2367 34 : if (nvme_ctrlr->destruct) {
2368 3 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
2369 3 : return -ENXIO;
2370 : }
2371 :
2372 31 : if (nvme_ctrlr->resetting) {
2373 6 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
2374 6 : SPDK_NOTICELOG("Unable to perform reset, already in progress.\n");
2375 6 : return -EBUSY;
2376 : }
2377 :
2378 25 : if (nvme_ctrlr->disabled) {
2379 0 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
2380 0 : SPDK_NOTICELOG("Unable to perform reset. Controller is disabled.\n");
2381 0 : return -EALREADY;
2382 : }
2383 :
2384 25 : nvme_ctrlr->resetting = true;
2385 25 : nvme_ctrlr->dont_retry = true;
2386 :
2387 25 : if (nvme_ctrlr->reconnect_is_delayed) {
2388 1 : SPDK_DEBUGLOG(bdev_nvme, "Reconnect is already scheduled.\n");
2389 1 : msg_fn = bdev_nvme_reconnect_ctrlr_now;
2390 1 : nvme_ctrlr->reconnect_is_delayed = false;
2391 : } else {
2392 24 : msg_fn = _bdev_nvme_reset_ctrlr;
2393 24 : assert(nvme_ctrlr->reset_start_tsc == 0);
2394 : }
2395 :
2396 25 : nvme_ctrlr->reset_start_tsc = spdk_get_ticks();
2397 :
2398 25 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
2399 :
2400 25 : spdk_thread_send_msg(nvme_ctrlr->thread, msg_fn, nvme_ctrlr);
2401 25 : return 0;
2402 : }
2403 :
2404 : static int
2405 3 : bdev_nvme_enable_ctrlr(struct nvme_ctrlr *nvme_ctrlr)
2406 : {
2407 3 : pthread_mutex_lock(&nvme_ctrlr->mutex);
2408 3 : if (nvme_ctrlr->destruct) {
2409 0 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
2410 0 : return -ENXIO;
2411 : }
2412 :
2413 3 : if (nvme_ctrlr->resetting) {
2414 0 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
2415 0 : return -EBUSY;
2416 : }
2417 :
2418 3 : if (!nvme_ctrlr->disabled) {
2419 1 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
2420 1 : return -EALREADY;
2421 : }
2422 :
2423 2 : nvme_ctrlr->disabled = false;
2424 2 : nvme_ctrlr->resetting = true;
2425 :
2426 2 : nvme_ctrlr->reset_start_tsc = spdk_get_ticks();
2427 :
2428 2 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
2429 :
2430 2 : spdk_thread_send_msg(nvme_ctrlr->thread, bdev_nvme_reconnect_ctrlr_now, nvme_ctrlr);
2431 2 : return 0;
2432 : }
2433 :
2434 : static void
2435 2 : _bdev_nvme_disable_ctrlr_complete(struct spdk_io_channel_iter *i, int status)
2436 : {
2437 2 : struct nvme_ctrlr *nvme_ctrlr = spdk_io_channel_iter_get_io_device(i);
2438 2 : bdev_nvme_ctrlr_op_cb ctrlr_op_cb_fn = nvme_ctrlr->ctrlr_op_cb_fn;
2439 2 : void *ctrlr_op_cb_arg = nvme_ctrlr->ctrlr_op_cb_arg;
2440 : enum bdev_nvme_op_after_reset op_after_disable;
2441 :
2442 2 : assert(nvme_ctrlr->thread == spdk_get_thread());
2443 :
2444 2 : nvme_ctrlr->ctrlr_op_cb_fn = NULL;
2445 2 : nvme_ctrlr->ctrlr_op_cb_arg = NULL;
2446 :
2447 2 : pthread_mutex_lock(&nvme_ctrlr->mutex);
2448 :
2449 2 : nvme_ctrlr->resetting = false;
2450 2 : nvme_ctrlr->dont_retry = false;
2451 :
2452 2 : op_after_disable = bdev_nvme_check_op_after_reset(nvme_ctrlr, true);
2453 :
2454 2 : nvme_ctrlr->disabled = true;
2455 2 : spdk_poller_pause(nvme_ctrlr->adminq_timer_poller);
2456 :
2457 2 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
2458 :
2459 2 : if (ctrlr_op_cb_fn) {
2460 0 : ctrlr_op_cb_fn(ctrlr_op_cb_arg, 0);
2461 : }
2462 :
2463 2 : switch (op_after_disable) {
2464 0 : case OP_COMPLETE_PENDING_DESTRUCT:
2465 0 : nvme_ctrlr_unregister(nvme_ctrlr);
2466 0 : break;
2467 2 : default:
2468 2 : break;
2469 : }
2470 :
2471 2 : }
2472 :
2473 : static void
2474 2 : bdev_nvme_disable_ctrlr_complete(struct nvme_ctrlr *nvme_ctrlr)
2475 : {
2476 : /* Make sure we clear any pending resets before returning. */
2477 2 : spdk_for_each_channel(nvme_ctrlr,
2478 : bdev_nvme_complete_pending_resets,
2479 : NULL,
2480 : _bdev_nvme_disable_ctrlr_complete);
2481 2 : }
2482 :
2483 : static void
2484 1 : bdev_nvme_disable_destroy_qpairs_done(struct spdk_io_channel_iter *i, int status)
2485 : {
2486 1 : struct nvme_ctrlr *nvme_ctrlr = spdk_io_channel_iter_get_io_device(i);
2487 :
2488 1 : assert(status == 0);
2489 :
2490 1 : if (!spdk_nvme_ctrlr_is_fabrics(nvme_ctrlr->ctrlr)) {
2491 0 : bdev_nvme_disable_ctrlr_complete(nvme_ctrlr);
2492 : } else {
2493 1 : nvme_ctrlr_disconnect(nvme_ctrlr, bdev_nvme_disable_ctrlr_complete);
2494 : }
2495 1 : }
2496 :
2497 : static void
2498 1 : bdev_nvme_disable_destroy_qpairs(struct nvme_ctrlr *nvme_ctrlr)
2499 : {
2500 1 : spdk_for_each_channel(nvme_ctrlr,
2501 : bdev_nvme_reset_destroy_qpair,
2502 : NULL,
2503 : bdev_nvme_disable_destroy_qpairs_done);
2504 1 : }
2505 :
2506 : static void
2507 1 : _bdev_nvme_cancel_reconnect_and_disable_ctrlr(void *ctx)
2508 : {
2509 1 : struct nvme_ctrlr *nvme_ctrlr = ctx;
2510 :
2511 1 : assert(nvme_ctrlr->resetting == true);
2512 1 : assert(nvme_ctrlr->thread == spdk_get_thread());
2513 :
2514 1 : spdk_poller_unregister(&nvme_ctrlr->reconnect_delay_timer);
2515 :
2516 1 : bdev_nvme_disable_ctrlr_complete(nvme_ctrlr);
2517 1 : }
2518 :
2519 : static void
2520 1 : _bdev_nvme_disconnect_and_disable_ctrlr(void *ctx)
2521 : {
2522 1 : struct nvme_ctrlr *nvme_ctrlr = ctx;
2523 :
2524 1 : assert(nvme_ctrlr->resetting == true);
2525 1 : assert(nvme_ctrlr->thread == spdk_get_thread());
2526 :
2527 1 : if (!spdk_nvme_ctrlr_is_fabrics(nvme_ctrlr->ctrlr)) {
2528 0 : nvme_ctrlr_disconnect(nvme_ctrlr, bdev_nvme_disable_destroy_qpairs);
2529 : } else {
2530 1 : bdev_nvme_disable_destroy_qpairs(nvme_ctrlr);
2531 : }
2532 1 : }
2533 :
2534 : static int
2535 5 : bdev_nvme_disable_ctrlr(struct nvme_ctrlr *nvme_ctrlr)
2536 : {
2537 : spdk_msg_fn msg_fn;
2538 :
2539 5 : pthread_mutex_lock(&nvme_ctrlr->mutex);
2540 5 : if (nvme_ctrlr->destruct) {
2541 1 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
2542 1 : return -ENXIO;
2543 : }
2544 :
2545 4 : if (nvme_ctrlr->resetting) {
2546 1 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
2547 1 : return -EBUSY;
2548 : }
2549 :
2550 3 : if (nvme_ctrlr->disabled) {
2551 1 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
2552 1 : return -EALREADY;
2553 : }
2554 :
2555 2 : nvme_ctrlr->resetting = true;
2556 2 : nvme_ctrlr->dont_retry = true;
2557 :
2558 2 : if (nvme_ctrlr->reconnect_is_delayed) {
2559 1 : msg_fn = _bdev_nvme_cancel_reconnect_and_disable_ctrlr;
2560 1 : nvme_ctrlr->reconnect_is_delayed = false;
2561 : } else {
2562 1 : msg_fn = _bdev_nvme_disconnect_and_disable_ctrlr;
2563 : }
2564 :
2565 2 : nvme_ctrlr->reset_start_tsc = spdk_get_ticks();
2566 :
2567 2 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
2568 :
2569 2 : spdk_thread_send_msg(nvme_ctrlr->thread, msg_fn, nvme_ctrlr);
2570 2 : return 0;
2571 : }
2572 :
2573 : static int
2574 16 : nvme_ctrlr_op(struct nvme_ctrlr *nvme_ctrlr, enum nvme_ctrlr_op op,
2575 : bdev_nvme_ctrlr_op_cb cb_fn, void *cb_arg)
2576 : {
2577 : int rc;
2578 :
2579 16 : switch (op) {
2580 15 : case NVME_CTRLR_OP_RESET:
2581 15 : rc = bdev_nvme_reset_ctrlr(nvme_ctrlr);
2582 15 : break;
2583 0 : case NVME_CTRLR_OP_ENABLE:
2584 0 : rc = bdev_nvme_enable_ctrlr(nvme_ctrlr);
2585 0 : break;
2586 0 : case NVME_CTRLR_OP_DISABLE:
2587 0 : rc = bdev_nvme_disable_ctrlr(nvme_ctrlr);
2588 0 : break;
2589 1 : default:
2590 1 : rc = -EINVAL;
2591 1 : break;
2592 : }
2593 :
2594 16 : if (rc == 0) {
2595 9 : assert(nvme_ctrlr->ctrlr_op_cb_fn == NULL);
2596 9 : assert(nvme_ctrlr->ctrlr_op_cb_arg == NULL);
2597 9 : nvme_ctrlr->ctrlr_op_cb_fn = cb_fn;
2598 9 : nvme_ctrlr->ctrlr_op_cb_arg = cb_arg;
2599 : }
2600 16 : return rc;
2601 : }
2602 :
2603 : struct nvme_ctrlr_op_rpc_ctx {
2604 : struct nvme_ctrlr *nvme_ctrlr;
2605 : struct spdk_thread *orig_thread;
2606 : enum nvme_ctrlr_op op;
2607 : int rc;
2608 : bdev_nvme_ctrlr_op_cb cb_fn;
2609 : void *cb_arg;
2610 : };
2611 :
2612 : static void
2613 4 : _nvme_ctrlr_op_rpc_complete(void *_ctx)
2614 : {
2615 4 : struct nvme_ctrlr_op_rpc_ctx *ctx = _ctx;
2616 :
2617 4 : assert(ctx != NULL);
2618 4 : assert(ctx->cb_fn != NULL);
2619 :
2620 4 : ctx->cb_fn(ctx->cb_arg, ctx->rc);
2621 :
2622 4 : free(ctx);
2623 4 : }
2624 :
2625 : static void
2626 4 : nvme_ctrlr_op_rpc_complete(void *cb_arg, int rc)
2627 : {
2628 4 : struct nvme_ctrlr_op_rpc_ctx *ctx = cb_arg;
2629 :
2630 4 : ctx->rc = rc;
2631 :
2632 4 : spdk_thread_send_msg(ctx->orig_thread, _nvme_ctrlr_op_rpc_complete, ctx);
2633 4 : }
2634 :
2635 : void
2636 4 : nvme_ctrlr_op_rpc(struct nvme_ctrlr *nvme_ctrlr, enum nvme_ctrlr_op op,
2637 : bdev_nvme_ctrlr_op_cb cb_fn, void *cb_arg)
2638 : {
2639 : struct nvme_ctrlr_op_rpc_ctx *ctx;
2640 : int rc;
2641 :
2642 4 : assert(cb_fn != NULL);
2643 :
2644 4 : ctx = calloc(1, sizeof(*ctx));
2645 4 : if (ctx == NULL) {
2646 0 : SPDK_ERRLOG("Failed to allocate nvme_ctrlr_op_rpc_ctx.\n");
2647 0 : cb_fn(cb_arg, -ENOMEM);
2648 0 : return;
2649 : }
2650 :
2651 4 : ctx->orig_thread = spdk_get_thread();
2652 4 : ctx->cb_fn = cb_fn;
2653 4 : ctx->cb_arg = cb_arg;
2654 :
2655 4 : rc = nvme_ctrlr_op(nvme_ctrlr, op, nvme_ctrlr_op_rpc_complete, ctx);
2656 4 : if (rc == 0) {
2657 1 : return;
2658 3 : } else if (rc == -EALREADY) {
2659 0 : rc = 0;
2660 : }
2661 :
2662 3 : nvme_ctrlr_op_rpc_complete(ctx, rc);
2663 : }
2664 :
2665 : static void nvme_bdev_ctrlr_op_rpc_continue(void *cb_arg, int rc);
2666 :
2667 : static void
2668 2 : _nvme_bdev_ctrlr_op_rpc_continue(void *_ctx)
2669 : {
2670 2 : struct nvme_ctrlr_op_rpc_ctx *ctx = _ctx;
2671 : struct nvme_ctrlr *prev_nvme_ctrlr, *next_nvme_ctrlr;
2672 : int rc;
2673 :
2674 2 : prev_nvme_ctrlr = ctx->nvme_ctrlr;
2675 2 : ctx->nvme_ctrlr = NULL;
2676 :
2677 2 : if (ctx->rc != 0) {
2678 0 : goto complete;
2679 : }
2680 :
2681 2 : next_nvme_ctrlr = TAILQ_NEXT(prev_nvme_ctrlr, tailq);
2682 2 : if (next_nvme_ctrlr == NULL) {
2683 1 : goto complete;
2684 : }
2685 :
2686 1 : rc = nvme_ctrlr_op(next_nvme_ctrlr, ctx->op, nvme_bdev_ctrlr_op_rpc_continue, ctx);
2687 1 : if (rc == 0) {
2688 1 : ctx->nvme_ctrlr = next_nvme_ctrlr;
2689 1 : return;
2690 0 : } else if (rc == -EALREADY) {
2691 0 : ctx->nvme_ctrlr = next_nvme_ctrlr;
2692 0 : rc = 0;
2693 : }
2694 :
2695 0 : ctx->rc = rc;
2696 :
2697 1 : complete:
2698 1 : ctx->cb_fn(ctx->cb_arg, ctx->rc);
2699 1 : free(ctx);
2700 : }
2701 :
2702 : static void
2703 2 : nvme_bdev_ctrlr_op_rpc_continue(void *cb_arg, int rc)
2704 : {
2705 2 : struct nvme_ctrlr_op_rpc_ctx *ctx = cb_arg;
2706 :
2707 2 : ctx->rc = rc;
2708 :
2709 2 : spdk_thread_send_msg(ctx->orig_thread, _nvme_bdev_ctrlr_op_rpc_continue, ctx);
2710 2 : }
2711 :
2712 : void
2713 1 : nvme_bdev_ctrlr_op_rpc(struct nvme_bdev_ctrlr *nbdev_ctrlr, enum nvme_ctrlr_op op,
2714 : bdev_nvme_ctrlr_op_cb cb_fn, void *cb_arg)
2715 : {
2716 : struct nvme_ctrlr_op_rpc_ctx *ctx;
2717 : struct nvme_ctrlr *nvme_ctrlr;
2718 : int rc;
2719 :
2720 1 : assert(cb_fn != NULL);
2721 :
2722 1 : ctx = calloc(1, sizeof(*ctx));
2723 1 : if (ctx == NULL) {
2724 0 : SPDK_ERRLOG("Failed to allocate nvme_ctrlr_op_rpc_ctx.\n");
2725 0 : cb_fn(cb_arg, -ENOMEM);
2726 0 : return;
2727 : }
2728 :
2729 1 : ctx->orig_thread = spdk_get_thread();
2730 1 : ctx->op = op;
2731 1 : ctx->cb_fn = cb_fn;
2732 1 : ctx->cb_arg = cb_arg;
2733 :
2734 1 : nvme_ctrlr = TAILQ_FIRST(&nbdev_ctrlr->ctrlrs);
2735 1 : assert(nvme_ctrlr != NULL);
2736 :
2737 1 : rc = nvme_ctrlr_op(nvme_ctrlr, op, nvme_bdev_ctrlr_op_rpc_continue, ctx);
2738 1 : if (rc == 0) {
2739 1 : ctx->nvme_ctrlr = nvme_ctrlr;
2740 1 : return;
2741 0 : } else if (rc == -EALREADY) {
2742 0 : ctx->nvme_ctrlr = nvme_ctrlr;
2743 0 : rc = 0;
2744 : }
2745 :
2746 0 : nvme_bdev_ctrlr_op_rpc_continue(ctx, rc);
2747 : }
2748 :
2749 : static int _bdev_nvme_reset_io(struct nvme_io_path *io_path, struct nvme_bdev_io *bio);
2750 :
2751 : static void
2752 7 : _bdev_nvme_reset_io_complete(struct spdk_io_channel_iter *i, int status)
2753 : {
2754 7 : struct nvme_bdev_io *bio = spdk_io_channel_iter_get_ctx(i);
2755 : enum spdk_bdev_io_status io_status;
2756 :
2757 7 : if (bio->cpl.cdw0 == 0) {
2758 5 : io_status = SPDK_BDEV_IO_STATUS_SUCCESS;
2759 : } else {
2760 2 : io_status = SPDK_BDEV_IO_STATUS_FAILED;
2761 : }
2762 :
2763 7 : __bdev_nvme_io_complete(spdk_bdev_io_from_ctx(bio), io_status, NULL);
2764 7 : }
2765 :
2766 : static void
2767 14 : bdev_nvme_abort_bdev_channel(struct spdk_io_channel_iter *i)
2768 : {
2769 14 : struct spdk_io_channel *_ch = spdk_io_channel_iter_get_channel(i);
2770 14 : struct nvme_bdev_channel *nbdev_ch = spdk_io_channel_get_ctx(_ch);
2771 :
2772 14 : bdev_nvme_abort_retry_ios(nbdev_ch);
2773 :
2774 14 : spdk_for_each_channel_continue(i, 0);
2775 14 : }
2776 :
2777 : static void
2778 7 : bdev_nvme_reset_io_complete(struct nvme_bdev_io *bio)
2779 : {
2780 7 : struct spdk_bdev_io *bdev_io = spdk_bdev_io_from_ctx(bio);
2781 7 : struct nvme_bdev *nbdev = (struct nvme_bdev *)bdev_io->bdev->ctxt;
2782 :
2783 : /* Abort all queued I/Os for retry. */
2784 7 : spdk_for_each_channel(nbdev,
2785 : bdev_nvme_abort_bdev_channel,
2786 : bio,
2787 : _bdev_nvme_reset_io_complete);
2788 7 : }
2789 :
2790 : static void
2791 10 : _bdev_nvme_reset_io_continue(void *ctx)
2792 : {
2793 10 : struct nvme_bdev_io *bio = ctx;
2794 : struct nvme_io_path *prev_io_path, *next_io_path;
2795 : int rc;
2796 :
2797 10 : prev_io_path = bio->io_path;
2798 10 : bio->io_path = NULL;
2799 :
2800 10 : if (bio->cpl.cdw0 != 0) {
2801 2 : goto complete;
2802 : }
2803 :
2804 8 : next_io_path = STAILQ_NEXT(prev_io_path, stailq);
2805 8 : if (next_io_path == NULL) {
2806 5 : goto complete;
2807 : }
2808 :
2809 3 : rc = _bdev_nvme_reset_io(next_io_path, bio);
2810 3 : if (rc == 0) {
2811 3 : return;
2812 : }
2813 :
2814 0 : bio->cpl.cdw0 = 1;
2815 :
2816 7 : complete:
2817 7 : bdev_nvme_reset_io_complete(bio);
2818 : }
2819 :
2820 : static void
2821 10 : bdev_nvme_reset_io_continue(void *cb_arg, int rc)
2822 : {
2823 10 : struct nvme_bdev_io *bio = cb_arg;
2824 10 : struct spdk_bdev_io *bdev_io = spdk_bdev_io_from_ctx(bio);
2825 :
2826 10 : bio->cpl.cdw0 = (rc == 0) ? 0 : 1;
2827 :
2828 10 : spdk_thread_send_msg(spdk_bdev_io_get_thread(bdev_io), _bdev_nvme_reset_io_continue, bio);
2829 10 : }
2830 :
2831 : static int
2832 10 : _bdev_nvme_reset_io(struct nvme_io_path *io_path, struct nvme_bdev_io *bio)
2833 : {
2834 : struct nvme_ctrlr_channel *ctrlr_ch;
2835 : struct spdk_bdev_io *bdev_io;
2836 : int rc;
2837 :
2838 10 : rc = nvme_ctrlr_op(io_path->qpair->ctrlr, NVME_CTRLR_OP_RESET,
2839 : bdev_nvme_reset_io_continue, bio);
2840 10 : if (rc != 0 && rc != -EBUSY) {
2841 0 : return rc;
2842 : }
2843 :
2844 10 : assert(bio->io_path == NULL);
2845 10 : bio->io_path = io_path;
2846 :
2847 10 : if (rc == -EBUSY) {
2848 4 : ctrlr_ch = io_path->qpair->ctrlr_ch;
2849 4 : assert(ctrlr_ch != NULL);
2850 : /*
2851 : * Reset call is queued only if it is from the app framework. This is on purpose so that
2852 : * we don't interfere with the app framework reset strategy. i.e. we are deferring to the
2853 : * upper level. If they are in the middle of a reset, we won't try to schedule another one.
2854 : */
2855 4 : bdev_io = spdk_bdev_io_from_ctx(bio);
2856 4 : TAILQ_INSERT_TAIL(&ctrlr_ch->pending_resets, bdev_io, module_link);
2857 : }
2858 :
2859 10 : return 0;
2860 : }
2861 :
2862 : static void
2863 7 : bdev_nvme_reset_io(struct nvme_bdev_channel *nbdev_ch, struct nvme_bdev_io *bio)
2864 : {
2865 : struct nvme_io_path *io_path;
2866 : int rc;
2867 :
2868 7 : bio->cpl.cdw0 = 0;
2869 :
2870 : /* Reset all nvme_ctrlrs of a bdev controller sequentially. */
2871 7 : io_path = STAILQ_FIRST(&nbdev_ch->io_path_list);
2872 7 : assert(io_path != NULL);
2873 :
2874 7 : rc = _bdev_nvme_reset_io(io_path, bio);
2875 7 : if (rc != 0) {
2876 : /* If the current nvme_ctrlr is disabled, skip it and move to the next nvme_ctrlr. */
2877 0 : rc = (rc == -EALREADY) ? 0 : rc;
2878 :
2879 0 : bdev_nvme_reset_io_continue(bio, rc);
2880 : }
2881 7 : }
2882 :
2883 : static int
2884 18 : bdev_nvme_failover_ctrlr_unsafe(struct nvme_ctrlr *nvme_ctrlr, bool remove)
2885 : {
2886 18 : if (nvme_ctrlr->destruct) {
2887 : /* Don't bother resetting if the controller is in the process of being destructed. */
2888 2 : return -ENXIO;
2889 : }
2890 :
2891 16 : if (nvme_ctrlr->resetting) {
2892 3 : if (!nvme_ctrlr->in_failover) {
2893 3 : SPDK_NOTICELOG("Reset is already in progress. Defer failover until reset completes.\n");
2894 :
2895 : /* Defer failover until reset completes. */
2896 3 : nvme_ctrlr->pending_failover = true;
2897 3 : return -EINPROGRESS;
2898 : } else {
2899 0 : SPDK_NOTICELOG("Unable to perform failover, already in progress.\n");
2900 0 : return -EBUSY;
2901 : }
2902 : }
2903 :
2904 13 : bdev_nvme_failover_trid(nvme_ctrlr, remove, true);
2905 :
2906 13 : if (nvme_ctrlr->reconnect_is_delayed) {
2907 1 : SPDK_NOTICELOG("Reconnect is already scheduled.\n");
2908 :
2909 : /* We rely on the next reconnect for the failover. */
2910 1 : return -EALREADY;
2911 : }
2912 :
2913 12 : if (nvme_ctrlr->disabled) {
2914 0 : SPDK_NOTICELOG("Controller is disabled.\n");
2915 :
2916 : /* We rely on the enablement for the failover. */
2917 0 : return -EALREADY;
2918 : }
2919 :
2920 12 : nvme_ctrlr->resetting = true;
2921 12 : nvme_ctrlr->in_failover = true;
2922 :
2923 12 : assert(nvme_ctrlr->reset_start_tsc == 0);
2924 12 : nvme_ctrlr->reset_start_tsc = spdk_get_ticks();
2925 :
2926 12 : return 0;
2927 : }
2928 :
2929 : static int
2930 16 : bdev_nvme_failover_ctrlr(struct nvme_ctrlr *nvme_ctrlr)
2931 : {
2932 : int rc;
2933 :
2934 16 : pthread_mutex_lock(&nvme_ctrlr->mutex);
2935 16 : rc = bdev_nvme_failover_ctrlr_unsafe(nvme_ctrlr, false);
2936 16 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
2937 :
2938 16 : if (rc == 0) {
2939 11 : spdk_thread_send_msg(nvme_ctrlr->thread, _bdev_nvme_reset_ctrlr, nvme_ctrlr);
2940 5 : } else if (rc == -EALREADY) {
2941 0 : rc = 0;
2942 : }
2943 :
2944 16 : return rc;
2945 : }
2946 :
2947 : static int bdev_nvme_unmap(struct nvme_bdev_io *bio, uint64_t offset_blocks,
2948 : uint64_t num_blocks);
2949 :
2950 : static int bdev_nvme_write_zeroes(struct nvme_bdev_io *bio, uint64_t offset_blocks,
2951 : uint64_t num_blocks);
2952 :
2953 : static int bdev_nvme_copy(struct nvme_bdev_io *bio, uint64_t dst_offset_blocks,
2954 : uint64_t src_offset_blocks,
2955 : uint64_t num_blocks);
2956 :
2957 : static void
2958 1 : bdev_nvme_get_buf_cb(struct spdk_io_channel *ch, struct spdk_bdev_io *bdev_io,
2959 : bool success)
2960 : {
2961 1 : struct nvme_bdev_io *bio = (struct nvme_bdev_io *)bdev_io->driver_ctx;
2962 : int ret;
2963 :
2964 1 : if (!success) {
2965 0 : ret = -EINVAL;
2966 0 : goto exit;
2967 : }
2968 :
2969 1 : if (spdk_unlikely(!nvme_io_path_is_available(bio->io_path))) {
2970 0 : ret = -ENXIO;
2971 0 : goto exit;
2972 : }
2973 :
2974 1 : ret = bdev_nvme_readv(bio,
2975 : bdev_io->u.bdev.iovs,
2976 : bdev_io->u.bdev.iovcnt,
2977 : bdev_io->u.bdev.md_buf,
2978 : bdev_io->u.bdev.num_blocks,
2979 : bdev_io->u.bdev.offset_blocks,
2980 : bdev_io->u.bdev.dif_check_flags,
2981 : bdev_io->u.bdev.memory_domain,
2982 : bdev_io->u.bdev.memory_domain_ctx,
2983 : bdev_io->u.bdev.accel_sequence);
2984 :
2985 1 : exit:
2986 1 : if (spdk_unlikely(ret != 0)) {
2987 0 : bdev_nvme_io_complete(bio, ret);
2988 : }
2989 1 : }
2990 :
2991 : static inline void
2992 51 : _bdev_nvme_submit_request(struct nvme_bdev_channel *nbdev_ch, struct spdk_bdev_io *bdev_io)
2993 : {
2994 51 : struct nvme_bdev_io *nbdev_io = (struct nvme_bdev_io *)bdev_io->driver_ctx;
2995 51 : struct spdk_bdev *bdev = bdev_io->bdev;
2996 : struct nvme_bdev_io *nbdev_io_to_abort;
2997 51 : int rc = 0;
2998 :
2999 51 : switch (bdev_io->type) {
3000 3 : case SPDK_BDEV_IO_TYPE_READ:
3001 3 : if (bdev_io->u.bdev.iovs && bdev_io->u.bdev.iovs[0].iov_base) {
3002 :
3003 2 : rc = bdev_nvme_readv(nbdev_io,
3004 : bdev_io->u.bdev.iovs,
3005 : bdev_io->u.bdev.iovcnt,
3006 : bdev_io->u.bdev.md_buf,
3007 : bdev_io->u.bdev.num_blocks,
3008 : bdev_io->u.bdev.offset_blocks,
3009 : bdev_io->u.bdev.dif_check_flags,
3010 : bdev_io->u.bdev.memory_domain,
3011 : bdev_io->u.bdev.memory_domain_ctx,
3012 : bdev_io->u.bdev.accel_sequence);
3013 : } else {
3014 1 : spdk_bdev_io_get_buf(bdev_io, bdev_nvme_get_buf_cb,
3015 1 : bdev_io->u.bdev.num_blocks * bdev->blocklen);
3016 1 : rc = 0;
3017 : }
3018 3 : break;
3019 25 : case SPDK_BDEV_IO_TYPE_WRITE:
3020 25 : rc = bdev_nvme_writev(nbdev_io,
3021 : bdev_io->u.bdev.iovs,
3022 : bdev_io->u.bdev.iovcnt,
3023 : bdev_io->u.bdev.md_buf,
3024 : bdev_io->u.bdev.num_blocks,
3025 : bdev_io->u.bdev.offset_blocks,
3026 : bdev_io->u.bdev.dif_check_flags,
3027 : bdev_io->u.bdev.memory_domain,
3028 : bdev_io->u.bdev.memory_domain_ctx,
3029 : bdev_io->u.bdev.accel_sequence,
3030 : bdev_io->u.bdev.nvme_cdw12,
3031 : bdev_io->u.bdev.nvme_cdw13);
3032 25 : break;
3033 1 : case SPDK_BDEV_IO_TYPE_COMPARE:
3034 1 : rc = bdev_nvme_comparev(nbdev_io,
3035 : bdev_io->u.bdev.iovs,
3036 : bdev_io->u.bdev.iovcnt,
3037 : bdev_io->u.bdev.md_buf,
3038 : bdev_io->u.bdev.num_blocks,
3039 : bdev_io->u.bdev.offset_blocks,
3040 : bdev_io->u.bdev.dif_check_flags);
3041 1 : break;
3042 2 : case SPDK_BDEV_IO_TYPE_COMPARE_AND_WRITE:
3043 2 : rc = bdev_nvme_comparev_and_writev(nbdev_io,
3044 : bdev_io->u.bdev.iovs,
3045 : bdev_io->u.bdev.iovcnt,
3046 : bdev_io->u.bdev.fused_iovs,
3047 : bdev_io->u.bdev.fused_iovcnt,
3048 : bdev_io->u.bdev.md_buf,
3049 : bdev_io->u.bdev.num_blocks,
3050 : bdev_io->u.bdev.offset_blocks,
3051 : bdev_io->u.bdev.dif_check_flags);
3052 2 : break;
3053 1 : case SPDK_BDEV_IO_TYPE_UNMAP:
3054 1 : rc = bdev_nvme_unmap(nbdev_io,
3055 : bdev_io->u.bdev.offset_blocks,
3056 : bdev_io->u.bdev.num_blocks);
3057 1 : break;
3058 0 : case SPDK_BDEV_IO_TYPE_WRITE_ZEROES:
3059 0 : rc = bdev_nvme_write_zeroes(nbdev_io,
3060 : bdev_io->u.bdev.offset_blocks,
3061 : bdev_io->u.bdev.num_blocks);
3062 0 : break;
3063 7 : case SPDK_BDEV_IO_TYPE_RESET:
3064 7 : nbdev_io->io_path = NULL;
3065 7 : bdev_nvme_reset_io(nbdev_ch, nbdev_io);
3066 7 : return;
3067 :
3068 1 : case SPDK_BDEV_IO_TYPE_FLUSH:
3069 1 : bdev_nvme_io_complete(nbdev_io, 0);
3070 1 : return;
3071 :
3072 0 : case SPDK_BDEV_IO_TYPE_ZONE_APPEND:
3073 0 : rc = bdev_nvme_zone_appendv(nbdev_io,
3074 : bdev_io->u.bdev.iovs,
3075 : bdev_io->u.bdev.iovcnt,
3076 : bdev_io->u.bdev.md_buf,
3077 : bdev_io->u.bdev.num_blocks,
3078 : bdev_io->u.bdev.offset_blocks,
3079 : bdev_io->u.bdev.dif_check_flags);
3080 0 : break;
3081 0 : case SPDK_BDEV_IO_TYPE_GET_ZONE_INFO:
3082 0 : rc = bdev_nvme_get_zone_info(nbdev_io,
3083 : bdev_io->u.zone_mgmt.zone_id,
3084 : bdev_io->u.zone_mgmt.num_zones,
3085 0 : bdev_io->u.zone_mgmt.buf);
3086 0 : break;
3087 0 : case SPDK_BDEV_IO_TYPE_ZONE_MANAGEMENT:
3088 0 : rc = bdev_nvme_zone_management(nbdev_io,
3089 : bdev_io->u.zone_mgmt.zone_id,
3090 : bdev_io->u.zone_mgmt.zone_action);
3091 0 : break;
3092 5 : case SPDK_BDEV_IO_TYPE_NVME_ADMIN:
3093 5 : nbdev_io->io_path = NULL;
3094 5 : bdev_nvme_admin_passthru(nbdev_ch,
3095 : nbdev_io,
3096 : &bdev_io->u.nvme_passthru.cmd,
3097 : bdev_io->u.nvme_passthru.buf,
3098 : bdev_io->u.nvme_passthru.nbytes);
3099 5 : return;
3100 :
3101 0 : case SPDK_BDEV_IO_TYPE_NVME_IO:
3102 0 : rc = bdev_nvme_io_passthru(nbdev_io,
3103 : &bdev_io->u.nvme_passthru.cmd,
3104 : bdev_io->u.nvme_passthru.buf,
3105 : bdev_io->u.nvme_passthru.nbytes);
3106 0 : break;
3107 0 : case SPDK_BDEV_IO_TYPE_NVME_IO_MD:
3108 0 : rc = bdev_nvme_io_passthru_md(nbdev_io,
3109 : &bdev_io->u.nvme_passthru.cmd,
3110 : bdev_io->u.nvme_passthru.buf,
3111 : bdev_io->u.nvme_passthru.nbytes,
3112 : bdev_io->u.nvme_passthru.md_buf,
3113 : bdev_io->u.nvme_passthru.md_len);
3114 0 : break;
3115 0 : case SPDK_BDEV_IO_TYPE_NVME_IOV_MD:
3116 0 : rc = bdev_nvme_iov_passthru_md(nbdev_io,
3117 : &bdev_io->u.nvme_passthru.cmd,
3118 : bdev_io->u.nvme_passthru.iovs,
3119 : bdev_io->u.nvme_passthru.iovcnt,
3120 : bdev_io->u.nvme_passthru.nbytes,
3121 : bdev_io->u.nvme_passthru.md_buf,
3122 : bdev_io->u.nvme_passthru.md_len);
3123 0 : break;
3124 6 : case SPDK_BDEV_IO_TYPE_ABORT:
3125 6 : nbdev_io->io_path = NULL;
3126 6 : nbdev_io_to_abort = (struct nvme_bdev_io *)bdev_io->u.abort.bio_to_abort->driver_ctx;
3127 6 : bdev_nvme_abort(nbdev_ch,
3128 : nbdev_io,
3129 : nbdev_io_to_abort);
3130 6 : return;
3131 :
3132 0 : case SPDK_BDEV_IO_TYPE_COPY:
3133 0 : rc = bdev_nvme_copy(nbdev_io,
3134 : bdev_io->u.bdev.offset_blocks,
3135 : bdev_io->u.bdev.copy.src_offset_blocks,
3136 : bdev_io->u.bdev.num_blocks);
3137 0 : break;
3138 0 : default:
3139 0 : rc = -EINVAL;
3140 0 : break;
3141 : }
3142 :
3143 32 : if (spdk_unlikely(rc != 0)) {
3144 0 : bdev_nvme_io_complete(nbdev_io, rc);
3145 : }
3146 : }
3147 :
3148 : static void
3149 58 : bdev_nvme_submit_request(struct spdk_io_channel *ch, struct spdk_bdev_io *bdev_io)
3150 : {
3151 58 : struct nvme_bdev_channel *nbdev_ch = spdk_io_channel_get_ctx(ch);
3152 58 : struct nvme_bdev_io *nbdev_io = (struct nvme_bdev_io *)bdev_io->driver_ctx;
3153 :
3154 58 : if (spdk_likely(nbdev_io->submit_tsc == 0)) {
3155 58 : nbdev_io->submit_tsc = spdk_bdev_io_get_submit_tsc(bdev_io);
3156 : } else {
3157 : /* There are cases where submit_tsc != 0, i.e. retry I/O.
3158 : * We need to update submit_tsc here.
3159 : */
3160 0 : nbdev_io->submit_tsc = spdk_get_ticks();
3161 : }
3162 :
3163 58 : spdk_trace_record(TRACE_BDEV_NVME_IO_START, 0, 0, (uintptr_t)nbdev_io, (uintptr_t)bdev_io);
3164 58 : nbdev_io->io_path = bdev_nvme_find_io_path(nbdev_ch);
3165 58 : if (spdk_unlikely(!nbdev_io->io_path)) {
3166 11 : if (!bdev_nvme_io_type_is_admin(bdev_io->type)) {
3167 10 : bdev_nvme_io_complete(nbdev_io, -ENXIO);
3168 10 : return;
3169 : }
3170 :
3171 : /* Admin commands do not use the optimal I/O path.
3172 : * Simply fall through even if it is not found.
3173 : */
3174 : }
3175 :
3176 48 : _bdev_nvme_submit_request(nbdev_ch, bdev_io);
3177 : }
3178 :
3179 : static bool
3180 0 : bdev_nvme_io_type_supported(void *ctx, enum spdk_bdev_io_type io_type)
3181 : {
3182 0 : struct nvme_bdev *nbdev = ctx;
3183 : struct nvme_ns *nvme_ns;
3184 : struct spdk_nvme_ns *ns;
3185 : struct spdk_nvme_ctrlr *ctrlr;
3186 : const struct spdk_nvme_ctrlr_data *cdata;
3187 :
3188 0 : nvme_ns = TAILQ_FIRST(&nbdev->nvme_ns_list);
3189 0 : assert(nvme_ns != NULL);
3190 0 : ns = nvme_ns->ns;
3191 0 : if (ns == NULL) {
3192 0 : return false;
3193 : }
3194 :
3195 0 : ctrlr = spdk_nvme_ns_get_ctrlr(ns);
3196 :
3197 0 : switch (io_type) {
3198 0 : case SPDK_BDEV_IO_TYPE_READ:
3199 : case SPDK_BDEV_IO_TYPE_WRITE:
3200 : case SPDK_BDEV_IO_TYPE_RESET:
3201 : case SPDK_BDEV_IO_TYPE_FLUSH:
3202 : case SPDK_BDEV_IO_TYPE_NVME_ADMIN:
3203 : case SPDK_BDEV_IO_TYPE_NVME_IO:
3204 : case SPDK_BDEV_IO_TYPE_ABORT:
3205 0 : return true;
3206 :
3207 0 : case SPDK_BDEV_IO_TYPE_COMPARE:
3208 0 : return spdk_nvme_ns_supports_compare(ns);
3209 :
3210 0 : case SPDK_BDEV_IO_TYPE_NVME_IO_MD:
3211 0 : return spdk_nvme_ns_get_md_size(ns) ? true : false;
3212 :
3213 0 : case SPDK_BDEV_IO_TYPE_UNMAP:
3214 0 : cdata = spdk_nvme_ctrlr_get_data(ctrlr);
3215 0 : return cdata->oncs.dsm;
3216 :
3217 0 : case SPDK_BDEV_IO_TYPE_WRITE_ZEROES:
3218 0 : cdata = spdk_nvme_ctrlr_get_data(ctrlr);
3219 0 : return cdata->oncs.write_zeroes;
3220 :
3221 0 : case SPDK_BDEV_IO_TYPE_COMPARE_AND_WRITE:
3222 0 : if (spdk_nvme_ctrlr_get_flags(ctrlr) &
3223 : SPDK_NVME_CTRLR_COMPARE_AND_WRITE_SUPPORTED) {
3224 0 : return true;
3225 : }
3226 0 : return false;
3227 :
3228 0 : case SPDK_BDEV_IO_TYPE_GET_ZONE_INFO:
3229 : case SPDK_BDEV_IO_TYPE_ZONE_MANAGEMENT:
3230 0 : return spdk_nvme_ns_get_csi(ns) == SPDK_NVME_CSI_ZNS;
3231 :
3232 0 : case SPDK_BDEV_IO_TYPE_ZONE_APPEND:
3233 0 : return spdk_nvme_ns_get_csi(ns) == SPDK_NVME_CSI_ZNS &&
3234 0 : spdk_nvme_ctrlr_get_flags(ctrlr) & SPDK_NVME_CTRLR_ZONE_APPEND_SUPPORTED;
3235 :
3236 0 : case SPDK_BDEV_IO_TYPE_COPY:
3237 0 : cdata = spdk_nvme_ctrlr_get_data(ctrlr);
3238 0 : return cdata->oncs.copy;
3239 :
3240 0 : default:
3241 0 : return false;
3242 : }
3243 : }
3244 :
3245 : static int
3246 57 : nvme_qpair_create(struct nvme_ctrlr *nvme_ctrlr, struct nvme_ctrlr_channel *ctrlr_ch)
3247 : {
3248 : struct nvme_qpair *nvme_qpair;
3249 : struct spdk_io_channel *pg_ch;
3250 : int rc;
3251 :
3252 57 : nvme_qpair = calloc(1, sizeof(*nvme_qpair));
3253 57 : if (!nvme_qpair) {
3254 0 : SPDK_ERRLOG("Failed to alloc nvme_qpair.\n");
3255 0 : return -1;
3256 : }
3257 :
3258 57 : TAILQ_INIT(&nvme_qpair->io_path_list);
3259 :
3260 57 : nvme_qpair->ctrlr = nvme_ctrlr;
3261 57 : nvme_qpair->ctrlr_ch = ctrlr_ch;
3262 :
3263 57 : pg_ch = spdk_get_io_channel(&g_nvme_bdev_ctrlrs);
3264 57 : if (!pg_ch) {
3265 0 : free(nvme_qpair);
3266 0 : return -1;
3267 : }
3268 :
3269 57 : nvme_qpair->group = spdk_io_channel_get_ctx(pg_ch);
3270 :
3271 : #ifdef SPDK_CONFIG_VTUNE
3272 : nvme_qpair->group->collect_spin_stat = true;
3273 : #else
3274 57 : nvme_qpair->group->collect_spin_stat = false;
3275 : #endif
3276 :
3277 57 : if (!nvme_ctrlr->disabled) {
3278 : /* If a nvme_ctrlr is disabled, don't try to create qpair for it. Qpair will
3279 : * be created when it's enabled.
3280 : */
3281 57 : rc = bdev_nvme_create_qpair(nvme_qpair);
3282 57 : if (rc != 0) {
3283 : /* nvme_ctrlr can't create IO qpair if connection is down.
3284 : * If reconnect_delay_sec is non-zero, creating IO qpair is retried
3285 : * after reconnect_delay_sec seconds. If bdev_retry_count is non-zero,
3286 : * submitted IO will be queued until IO qpair is successfully created.
3287 : *
3288 : * Hence, if both are satisfied, ignore the failure.
3289 : */
3290 0 : if (nvme_ctrlr->opts.reconnect_delay_sec == 0 || g_opts.bdev_retry_count == 0) {
3291 0 : spdk_put_io_channel(pg_ch);
3292 0 : free(nvme_qpair);
3293 0 : return rc;
3294 : }
3295 : }
3296 : }
3297 :
3298 57 : TAILQ_INSERT_TAIL(&nvme_qpair->group->qpair_list, nvme_qpair, tailq);
3299 :
3300 57 : ctrlr_ch->qpair = nvme_qpair;
3301 :
3302 57 : pthread_mutex_lock(&nvme_qpair->ctrlr->mutex);
3303 57 : nvme_qpair->ctrlr->ref++;
3304 57 : pthread_mutex_unlock(&nvme_qpair->ctrlr->mutex);
3305 :
3306 57 : return 0;
3307 : }
3308 :
3309 : static int
3310 57 : bdev_nvme_create_ctrlr_channel_cb(void *io_device, void *ctx_buf)
3311 : {
3312 57 : struct nvme_ctrlr *nvme_ctrlr = io_device;
3313 57 : struct nvme_ctrlr_channel *ctrlr_ch = ctx_buf;
3314 :
3315 57 : TAILQ_INIT(&ctrlr_ch->pending_resets);
3316 :
3317 57 : return nvme_qpair_create(nvme_ctrlr, ctrlr_ch);
3318 : }
3319 :
3320 : static void
3321 57 : nvme_qpair_delete(struct nvme_qpair *nvme_qpair)
3322 : {
3323 : struct nvme_io_path *io_path, *next;
3324 :
3325 57 : assert(nvme_qpair->group != NULL);
3326 :
3327 92 : TAILQ_FOREACH_SAFE(io_path, &nvme_qpair->io_path_list, tailq, next) {
3328 35 : TAILQ_REMOVE(&nvme_qpair->io_path_list, io_path, tailq);
3329 35 : nvme_io_path_free(io_path);
3330 : }
3331 :
3332 57 : TAILQ_REMOVE(&nvme_qpair->group->qpair_list, nvme_qpair, tailq);
3333 :
3334 57 : spdk_put_io_channel(spdk_io_channel_from_ctx(nvme_qpair->group));
3335 :
3336 57 : nvme_ctrlr_release(nvme_qpair->ctrlr);
3337 :
3338 57 : free(nvme_qpair);
3339 57 : }
3340 :
3341 : static void
3342 57 : bdev_nvme_destroy_ctrlr_channel_cb(void *io_device, void *ctx_buf)
3343 : {
3344 57 : struct nvme_ctrlr_channel *ctrlr_ch = ctx_buf;
3345 : struct nvme_qpair *nvme_qpair;
3346 :
3347 57 : nvme_qpair = ctrlr_ch->qpair;
3348 57 : assert(nvme_qpair != NULL);
3349 :
3350 57 : _bdev_nvme_clear_io_path_cache(nvme_qpair);
3351 :
3352 57 : if (nvme_qpair->qpair != NULL) {
3353 43 : if (ctrlr_ch->reset_iter == NULL) {
3354 43 : spdk_nvme_ctrlr_disconnect_io_qpair(nvme_qpair->qpair);
3355 : } else {
3356 : /* Skip current ctrlr_channel in a full reset sequence because
3357 : * it is being deleted now. The qpair is already being disconnected.
3358 : * We do not have to restart disconnecting it.
3359 : */
3360 0 : spdk_for_each_channel_continue(ctrlr_ch->reset_iter, 0);
3361 : }
3362 :
3363 : /* We cannot release a reference to the poll group now.
3364 : * The qpair may be disconnected asynchronously later.
3365 : * We need to poll it until it is actually disconnected.
3366 : * Just detach the qpair from the deleting ctrlr_channel.
3367 : */
3368 43 : nvme_qpair->ctrlr_ch = NULL;
3369 : } else {
3370 14 : assert(ctrlr_ch->reset_iter == NULL);
3371 :
3372 14 : nvme_qpair_delete(nvme_qpair);
3373 : }
3374 57 : }
3375 :
3376 : static inline struct spdk_io_channel *
3377 0 : bdev_nvme_get_accel_channel(struct nvme_poll_group *group)
3378 : {
3379 0 : if (spdk_unlikely(!group->accel_channel)) {
3380 0 : group->accel_channel = spdk_accel_get_io_channel();
3381 0 : if (!group->accel_channel) {
3382 0 : SPDK_ERRLOG("Cannot get the accel_channel for bdev nvme polling group=%p\n",
3383 : group);
3384 0 : return NULL;
3385 : }
3386 : }
3387 :
3388 0 : return group->accel_channel;
3389 : }
3390 :
3391 : static void
3392 0 : bdev_nvme_submit_accel_crc32c(void *ctx, uint32_t *dst, struct iovec *iov,
3393 : uint32_t iov_cnt, uint32_t seed,
3394 : spdk_nvme_accel_completion_cb cb_fn, void *cb_arg)
3395 : {
3396 : struct spdk_io_channel *accel_ch;
3397 0 : struct nvme_poll_group *group = ctx;
3398 : int rc;
3399 :
3400 0 : assert(cb_fn != NULL);
3401 :
3402 0 : accel_ch = bdev_nvme_get_accel_channel(group);
3403 0 : if (spdk_unlikely(accel_ch == NULL)) {
3404 0 : cb_fn(cb_arg, -ENOMEM);
3405 0 : return;
3406 : }
3407 :
3408 0 : rc = spdk_accel_submit_crc32cv(accel_ch, dst, iov, iov_cnt, seed, cb_fn, cb_arg);
3409 0 : if (rc) {
3410 : /* For the two cases, spdk_accel_submit_crc32cv does not call the user's cb_fn */
3411 0 : if (rc == -ENOMEM || rc == -EINVAL) {
3412 0 : cb_fn(cb_arg, rc);
3413 : }
3414 0 : SPDK_ERRLOG("Cannot complete the accelerated crc32c operation with iov=%p\n", iov);
3415 : }
3416 : }
3417 :
3418 : static void
3419 0 : bdev_nvme_finish_sequence(void *seq, spdk_nvme_accel_completion_cb cb_fn, void *cb_arg)
3420 : {
3421 0 : spdk_accel_sequence_finish(seq, cb_fn, cb_arg);
3422 0 : }
3423 :
3424 : static void
3425 0 : bdev_nvme_abort_sequence(void *seq)
3426 : {
3427 0 : spdk_accel_sequence_abort(seq);
3428 0 : }
3429 :
3430 : static void
3431 0 : bdev_nvme_reverse_sequence(void *seq)
3432 : {
3433 0 : spdk_accel_sequence_reverse(seq);
3434 0 : }
3435 :
3436 : static int
3437 0 : bdev_nvme_append_crc32c(void *ctx, void **seq, uint32_t *dst, struct iovec *iovs, uint32_t iovcnt,
3438 : struct spdk_memory_domain *domain, void *domain_ctx, uint32_t seed,
3439 : spdk_nvme_accel_step_cb cb_fn, void *cb_arg)
3440 : {
3441 : struct spdk_io_channel *ch;
3442 0 : struct nvme_poll_group *group = ctx;
3443 :
3444 0 : ch = bdev_nvme_get_accel_channel(group);
3445 0 : if (spdk_unlikely(ch == NULL)) {
3446 0 : return -ENOMEM;
3447 : }
3448 :
3449 0 : return spdk_accel_append_crc32c((struct spdk_accel_sequence **)seq, ch, dst, iovs, iovcnt,
3450 : domain, domain_ctx, seed, cb_fn, cb_arg);
3451 : }
3452 :
3453 : static struct spdk_nvme_accel_fn_table g_bdev_nvme_accel_fn_table = {
3454 : .table_size = sizeof(struct spdk_nvme_accel_fn_table),
3455 : .submit_accel_crc32c = bdev_nvme_submit_accel_crc32c,
3456 : .append_crc32c = bdev_nvme_append_crc32c,
3457 : .finish_sequence = bdev_nvme_finish_sequence,
3458 : .reverse_sequence = bdev_nvme_reverse_sequence,
3459 : .abort_sequence = bdev_nvme_abort_sequence,
3460 : };
3461 :
3462 : static int
3463 42 : bdev_nvme_create_poll_group_cb(void *io_device, void *ctx_buf)
3464 : {
3465 42 : struct nvme_poll_group *group = ctx_buf;
3466 :
3467 42 : TAILQ_INIT(&group->qpair_list);
3468 :
3469 42 : group->group = spdk_nvme_poll_group_create(group, &g_bdev_nvme_accel_fn_table);
3470 42 : if (group->group == NULL) {
3471 0 : return -1;
3472 : }
3473 :
3474 42 : group->poller = SPDK_POLLER_REGISTER(bdev_nvme_poll, group, g_opts.nvme_ioq_poll_period_us);
3475 :
3476 42 : if (group->poller == NULL) {
3477 0 : spdk_nvme_poll_group_destroy(group->group);
3478 0 : return -1;
3479 : }
3480 :
3481 42 : return 0;
3482 : }
3483 :
3484 : static void
3485 42 : bdev_nvme_destroy_poll_group_cb(void *io_device, void *ctx_buf)
3486 : {
3487 42 : struct nvme_poll_group *group = ctx_buf;
3488 :
3489 42 : assert(TAILQ_EMPTY(&group->qpair_list));
3490 :
3491 42 : if (group->accel_channel) {
3492 0 : spdk_put_io_channel(group->accel_channel);
3493 : }
3494 :
3495 42 : spdk_poller_unregister(&group->poller);
3496 42 : if (spdk_nvme_poll_group_destroy(group->group)) {
3497 0 : SPDK_ERRLOG("Unable to destroy a poll group for the NVMe bdev module.\n");
3498 0 : assert(false);
3499 : }
3500 42 : }
3501 :
3502 : static struct spdk_io_channel *
3503 0 : bdev_nvme_get_io_channel(void *ctx)
3504 : {
3505 0 : struct nvme_bdev *nvme_bdev = ctx;
3506 :
3507 0 : return spdk_get_io_channel(nvme_bdev);
3508 : }
3509 :
3510 : static void *
3511 0 : bdev_nvme_get_module_ctx(void *ctx)
3512 : {
3513 0 : struct nvme_bdev *nvme_bdev = ctx;
3514 : struct nvme_ns *nvme_ns;
3515 :
3516 0 : if (!nvme_bdev || nvme_bdev->disk.module != &nvme_if) {
3517 0 : return NULL;
3518 : }
3519 :
3520 0 : nvme_ns = TAILQ_FIRST(&nvme_bdev->nvme_ns_list);
3521 0 : if (!nvme_ns) {
3522 0 : return NULL;
3523 : }
3524 :
3525 0 : return nvme_ns->ns;
3526 : }
3527 :
3528 : static const char *
3529 0 : _nvme_ana_state_str(enum spdk_nvme_ana_state ana_state)
3530 : {
3531 0 : switch (ana_state) {
3532 0 : case SPDK_NVME_ANA_OPTIMIZED_STATE:
3533 0 : return "optimized";
3534 0 : case SPDK_NVME_ANA_NON_OPTIMIZED_STATE:
3535 0 : return "non_optimized";
3536 0 : case SPDK_NVME_ANA_INACCESSIBLE_STATE:
3537 0 : return "inaccessible";
3538 0 : case SPDK_NVME_ANA_PERSISTENT_LOSS_STATE:
3539 0 : return "persistent_loss";
3540 0 : case SPDK_NVME_ANA_CHANGE_STATE:
3541 0 : return "change";
3542 0 : default:
3543 0 : return NULL;
3544 : }
3545 : }
3546 :
3547 : static int
3548 8 : bdev_nvme_get_memory_domains(void *ctx, struct spdk_memory_domain **domains, int array_size)
3549 : {
3550 8 : struct spdk_memory_domain **_domains = NULL;
3551 8 : struct nvme_bdev *nbdev = ctx;
3552 : struct nvme_ns *nvme_ns;
3553 8 : int i = 0, _array_size = array_size;
3554 8 : int rc = 0;
3555 :
3556 22 : TAILQ_FOREACH(nvme_ns, &nbdev->nvme_ns_list, tailq) {
3557 14 : if (domains && array_size >= i) {
3558 11 : _domains = &domains[i];
3559 : } else {
3560 3 : _domains = NULL;
3561 : }
3562 14 : rc = spdk_nvme_ctrlr_get_memory_domains(nvme_ns->ctrlr->ctrlr, _domains, _array_size);
3563 14 : if (rc > 0) {
3564 13 : i += rc;
3565 13 : if (_array_size >= rc) {
3566 9 : _array_size -= rc;
3567 : } else {
3568 4 : _array_size = 0;
3569 : }
3570 1 : } else if (rc < 0) {
3571 0 : return rc;
3572 : }
3573 : }
3574 :
3575 8 : return i;
3576 : }
3577 :
3578 : static const char *
3579 0 : nvme_ctrlr_get_state_str(struct nvme_ctrlr *nvme_ctrlr)
3580 : {
3581 0 : if (nvme_ctrlr->destruct) {
3582 0 : return "deleting";
3583 0 : } else if (spdk_nvme_ctrlr_is_failed(nvme_ctrlr->ctrlr)) {
3584 0 : return "failed";
3585 0 : } else if (nvme_ctrlr->resetting) {
3586 0 : return "resetting";
3587 0 : } else if (nvme_ctrlr->reconnect_is_delayed > 0) {
3588 0 : return "reconnect_is_delayed";
3589 0 : } else if (nvme_ctrlr->disabled) {
3590 0 : return "disabled";
3591 : } else {
3592 0 : return "enabled";
3593 : }
3594 : }
3595 :
3596 : void
3597 0 : nvme_ctrlr_info_json(struct spdk_json_write_ctx *w, struct nvme_ctrlr *nvme_ctrlr)
3598 0 : {
3599 : struct spdk_nvme_transport_id *trid;
3600 : const struct spdk_nvme_ctrlr_opts *opts;
3601 : const struct spdk_nvme_ctrlr_data *cdata;
3602 : struct nvme_path_id *path_id;
3603 : uint32_t numa_socket_id;
3604 :
3605 0 : spdk_json_write_object_begin(w);
3606 :
3607 0 : spdk_json_write_named_string(w, "state", nvme_ctrlr_get_state_str(nvme_ctrlr));
3608 :
3609 : #ifdef SPDK_CONFIG_NVME_CUSE
3610 0 : size_t cuse_name_size = 128;
3611 0 : char cuse_name[cuse_name_size];
3612 :
3613 0 : int rc = spdk_nvme_cuse_get_ctrlr_name(nvme_ctrlr->ctrlr, cuse_name, &cuse_name_size);
3614 0 : if (rc == 0) {
3615 0 : spdk_json_write_named_string(w, "cuse_device", cuse_name);
3616 : }
3617 : #endif
3618 0 : trid = &nvme_ctrlr->active_path_id->trid;
3619 0 : spdk_json_write_named_object_begin(w, "trid");
3620 0 : nvme_bdev_dump_trid_json(trid, w);
3621 0 : spdk_json_write_object_end(w);
3622 :
3623 0 : path_id = TAILQ_NEXT(nvme_ctrlr->active_path_id, link);
3624 0 : if (path_id != NULL) {
3625 0 : spdk_json_write_named_array_begin(w, "alternate_trids");
3626 : do {
3627 0 : trid = &path_id->trid;
3628 0 : spdk_json_write_object_begin(w);
3629 0 : nvme_bdev_dump_trid_json(trid, w);
3630 0 : spdk_json_write_object_end(w);
3631 :
3632 0 : path_id = TAILQ_NEXT(path_id, link);
3633 0 : } while (path_id != NULL);
3634 0 : spdk_json_write_array_end(w);
3635 : }
3636 :
3637 0 : cdata = spdk_nvme_ctrlr_get_data(nvme_ctrlr->ctrlr);
3638 0 : spdk_json_write_named_uint16(w, "cntlid", cdata->cntlid);
3639 :
3640 0 : opts = spdk_nvme_ctrlr_get_opts(nvme_ctrlr->ctrlr);
3641 0 : spdk_json_write_named_object_begin(w, "host");
3642 0 : spdk_json_write_named_string(w, "nqn", opts->hostnqn);
3643 0 : spdk_json_write_named_string(w, "addr", opts->src_addr);
3644 0 : spdk_json_write_named_string(w, "svcid", opts->src_svcid);
3645 0 : spdk_json_write_object_end(w);
3646 :
3647 0 : numa_socket_id = spdk_nvme_ctrlr_get_socket_id(nvme_ctrlr->ctrlr);
3648 0 : if (numa_socket_id != (uint32_t)SPDK_ENV_SOCKET_ID_ANY) {
3649 0 : spdk_json_write_named_uint32(w, "numa_socket_id", numa_socket_id);
3650 : }
3651 0 : spdk_json_write_object_end(w);
3652 0 : }
3653 :
3654 : static void
3655 0 : nvme_namespace_info_json(struct spdk_json_write_ctx *w,
3656 : struct nvme_ns *nvme_ns)
3657 0 : {
3658 : struct spdk_nvme_ns *ns;
3659 : struct spdk_nvme_ctrlr *ctrlr;
3660 : const struct spdk_nvme_ctrlr_data *cdata;
3661 : const struct spdk_nvme_transport_id *trid;
3662 : union spdk_nvme_vs_register vs;
3663 : const struct spdk_nvme_ns_data *nsdata;
3664 0 : char buf[128];
3665 :
3666 0 : ns = nvme_ns->ns;
3667 0 : if (ns == NULL) {
3668 0 : return;
3669 : }
3670 :
3671 0 : ctrlr = spdk_nvme_ns_get_ctrlr(ns);
3672 :
3673 0 : cdata = spdk_nvme_ctrlr_get_data(ctrlr);
3674 0 : trid = spdk_nvme_ctrlr_get_transport_id(ctrlr);
3675 0 : vs = spdk_nvme_ctrlr_get_regs_vs(ctrlr);
3676 :
3677 0 : spdk_json_write_object_begin(w);
3678 :
3679 0 : if (trid->trtype == SPDK_NVME_TRANSPORT_PCIE) {
3680 0 : spdk_json_write_named_string(w, "pci_address", trid->traddr);
3681 : }
3682 :
3683 0 : spdk_json_write_named_object_begin(w, "trid");
3684 :
3685 0 : nvme_bdev_dump_trid_json(trid, w);
3686 :
3687 0 : spdk_json_write_object_end(w);
3688 :
3689 : #ifdef SPDK_CONFIG_NVME_CUSE
3690 0 : size_t cuse_name_size = 128;
3691 0 : char cuse_name[cuse_name_size];
3692 :
3693 0 : int rc = spdk_nvme_cuse_get_ns_name(ctrlr, spdk_nvme_ns_get_id(ns),
3694 : cuse_name, &cuse_name_size);
3695 0 : if (rc == 0) {
3696 0 : spdk_json_write_named_string(w, "cuse_device", cuse_name);
3697 : }
3698 : #endif
3699 :
3700 0 : spdk_json_write_named_object_begin(w, "ctrlr_data");
3701 :
3702 0 : spdk_json_write_named_uint16(w, "cntlid", cdata->cntlid);
3703 :
3704 0 : spdk_json_write_named_string_fmt(w, "vendor_id", "0x%04x", cdata->vid);
3705 :
3706 0 : snprintf(buf, sizeof(cdata->mn) + 1, "%s", cdata->mn);
3707 0 : spdk_str_trim(buf);
3708 0 : spdk_json_write_named_string(w, "model_number", buf);
3709 :
3710 0 : snprintf(buf, sizeof(cdata->sn) + 1, "%s", cdata->sn);
3711 0 : spdk_str_trim(buf);
3712 0 : spdk_json_write_named_string(w, "serial_number", buf);
3713 :
3714 0 : snprintf(buf, sizeof(cdata->fr) + 1, "%s", cdata->fr);
3715 0 : spdk_str_trim(buf);
3716 0 : spdk_json_write_named_string(w, "firmware_revision", buf);
3717 :
3718 0 : if (cdata->subnqn[0] != '\0') {
3719 0 : spdk_json_write_named_string(w, "subnqn", cdata->subnqn);
3720 : }
3721 :
3722 0 : spdk_json_write_named_object_begin(w, "oacs");
3723 :
3724 0 : spdk_json_write_named_uint32(w, "security", cdata->oacs.security);
3725 0 : spdk_json_write_named_uint32(w, "format", cdata->oacs.format);
3726 0 : spdk_json_write_named_uint32(w, "firmware", cdata->oacs.firmware);
3727 0 : spdk_json_write_named_uint32(w, "ns_manage", cdata->oacs.ns_manage);
3728 :
3729 0 : spdk_json_write_object_end(w);
3730 :
3731 0 : spdk_json_write_named_bool(w, "multi_ctrlr", cdata->cmic.multi_ctrlr);
3732 0 : spdk_json_write_named_bool(w, "ana_reporting", cdata->cmic.ana_reporting);
3733 :
3734 0 : spdk_json_write_object_end(w);
3735 :
3736 0 : spdk_json_write_named_object_begin(w, "vs");
3737 :
3738 0 : spdk_json_write_name(w, "nvme_version");
3739 0 : if (vs.bits.ter) {
3740 0 : spdk_json_write_string_fmt(w, "%u.%u.%u", vs.bits.mjr, vs.bits.mnr, vs.bits.ter);
3741 : } else {
3742 0 : spdk_json_write_string_fmt(w, "%u.%u", vs.bits.mjr, vs.bits.mnr);
3743 : }
3744 :
3745 0 : spdk_json_write_object_end(w);
3746 :
3747 0 : nsdata = spdk_nvme_ns_get_data(ns);
3748 :
3749 0 : spdk_json_write_named_object_begin(w, "ns_data");
3750 :
3751 0 : spdk_json_write_named_uint32(w, "id", spdk_nvme_ns_get_id(ns));
3752 :
3753 0 : if (cdata->cmic.ana_reporting) {
3754 0 : spdk_json_write_named_string(w, "ana_state",
3755 : _nvme_ana_state_str(nvme_ns->ana_state));
3756 : }
3757 :
3758 0 : spdk_json_write_named_bool(w, "can_share", nsdata->nmic.can_share);
3759 :
3760 0 : spdk_json_write_object_end(w);
3761 :
3762 0 : if (cdata->oacs.security) {
3763 0 : spdk_json_write_named_object_begin(w, "security");
3764 :
3765 0 : spdk_json_write_named_bool(w, "opal", nvme_ns->bdev->opal);
3766 :
3767 0 : spdk_json_write_object_end(w);
3768 : }
3769 :
3770 0 : spdk_json_write_object_end(w);
3771 : }
3772 :
3773 : static const char *
3774 0 : nvme_bdev_get_mp_policy_str(struct nvme_bdev *nbdev)
3775 : {
3776 0 : switch (nbdev->mp_policy) {
3777 0 : case BDEV_NVME_MP_POLICY_ACTIVE_PASSIVE:
3778 0 : return "active_passive";
3779 0 : case BDEV_NVME_MP_POLICY_ACTIVE_ACTIVE:
3780 0 : return "active_active";
3781 0 : default:
3782 0 : assert(false);
3783 : return "invalid";
3784 : }
3785 : }
3786 :
3787 : static const char *
3788 0 : nvme_bdev_get_mp_selector_str(struct nvme_bdev *nbdev)
3789 : {
3790 0 : switch (nbdev->mp_selector) {
3791 0 : case BDEV_NVME_MP_SELECTOR_ROUND_ROBIN:
3792 0 : return "round_robin";
3793 0 : case BDEV_NVME_MP_SELECTOR_QUEUE_DEPTH:
3794 0 : return "queue_depth";
3795 0 : default:
3796 0 : assert(false);
3797 : return "invalid";
3798 : }
3799 : }
3800 :
3801 : static int
3802 0 : bdev_nvme_dump_info_json(void *ctx, struct spdk_json_write_ctx *w)
3803 : {
3804 0 : struct nvme_bdev *nvme_bdev = ctx;
3805 : struct nvme_ns *nvme_ns;
3806 :
3807 0 : pthread_mutex_lock(&nvme_bdev->mutex);
3808 0 : spdk_json_write_named_array_begin(w, "nvme");
3809 0 : TAILQ_FOREACH(nvme_ns, &nvme_bdev->nvme_ns_list, tailq) {
3810 0 : nvme_namespace_info_json(w, nvme_ns);
3811 : }
3812 0 : spdk_json_write_array_end(w);
3813 0 : spdk_json_write_named_string(w, "mp_policy", nvme_bdev_get_mp_policy_str(nvme_bdev));
3814 0 : if (nvme_bdev->mp_policy == BDEV_NVME_MP_POLICY_ACTIVE_ACTIVE) {
3815 0 : spdk_json_write_named_string(w, "selector", nvme_bdev_get_mp_selector_str(nvme_bdev));
3816 0 : if (nvme_bdev->mp_selector == BDEV_NVME_MP_SELECTOR_ROUND_ROBIN) {
3817 0 : spdk_json_write_named_uint32(w, "rr_min_io", nvme_bdev->rr_min_io);
3818 : }
3819 : }
3820 0 : pthread_mutex_unlock(&nvme_bdev->mutex);
3821 :
3822 0 : return 0;
3823 : }
3824 :
3825 : static void
3826 0 : bdev_nvme_write_config_json(struct spdk_bdev *bdev, struct spdk_json_write_ctx *w)
3827 : {
3828 : /* No config per bdev needed */
3829 0 : }
3830 :
3831 : static uint64_t
3832 0 : bdev_nvme_get_spin_time(struct spdk_io_channel *ch)
3833 : {
3834 0 : struct nvme_bdev_channel *nbdev_ch = spdk_io_channel_get_ctx(ch);
3835 : struct nvme_io_path *io_path;
3836 : struct nvme_poll_group *group;
3837 0 : uint64_t spin_time = 0;
3838 :
3839 0 : STAILQ_FOREACH(io_path, &nbdev_ch->io_path_list, stailq) {
3840 0 : group = io_path->qpair->group;
3841 :
3842 0 : if (!group || !group->collect_spin_stat) {
3843 0 : continue;
3844 : }
3845 :
3846 0 : if (group->end_ticks != 0) {
3847 0 : group->spin_ticks += (group->end_ticks - group->start_ticks);
3848 0 : group->end_ticks = 0;
3849 : }
3850 :
3851 0 : spin_time += group->spin_ticks;
3852 0 : group->start_ticks = 0;
3853 0 : group->spin_ticks = 0;
3854 : }
3855 :
3856 0 : return (spin_time * 1000000ULL) / spdk_get_ticks_hz();
3857 : }
3858 :
3859 : static void
3860 0 : bdev_nvme_reset_device_stat(void *ctx)
3861 : {
3862 0 : struct nvme_bdev *nbdev = ctx;
3863 :
3864 0 : if (nbdev->err_stat != NULL) {
3865 0 : memset(nbdev->err_stat, 0, sizeof(struct nvme_error_stat));
3866 : }
3867 0 : }
3868 :
3869 : /* JSON string should be lowercases and underscore delimited string. */
3870 : static void
3871 0 : bdev_nvme_format_nvme_status(char *dst, const char *src)
3872 : {
3873 0 : char tmp[256];
3874 :
3875 0 : spdk_strcpy_replace(dst, 256, src, " - ", "_");
3876 0 : spdk_strcpy_replace(tmp, 256, dst, "-", "_");
3877 0 : spdk_strcpy_replace(dst, 256, tmp, " ", "_");
3878 0 : spdk_strlwr(dst);
3879 0 : }
3880 :
3881 : static void
3882 0 : bdev_nvme_dump_device_stat_json(void *ctx, struct spdk_json_write_ctx *w)
3883 : {
3884 0 : struct nvme_bdev *nbdev = ctx;
3885 0 : struct spdk_nvme_status status = {};
3886 : uint16_t sct, sc;
3887 0 : char status_json[256];
3888 : const char *status_str;
3889 :
3890 0 : if (nbdev->err_stat == NULL) {
3891 0 : return;
3892 : }
3893 :
3894 0 : spdk_json_write_named_object_begin(w, "nvme_error");
3895 :
3896 0 : spdk_json_write_named_object_begin(w, "status_type");
3897 0 : for (sct = 0; sct < 8; sct++) {
3898 0 : if (nbdev->err_stat->status_type[sct] == 0) {
3899 0 : continue;
3900 : }
3901 0 : status.sct = sct;
3902 :
3903 0 : status_str = spdk_nvme_cpl_get_status_type_string(&status);
3904 0 : assert(status_str != NULL);
3905 0 : bdev_nvme_format_nvme_status(status_json, status_str);
3906 :
3907 0 : spdk_json_write_named_uint32(w, status_json, nbdev->err_stat->status_type[sct]);
3908 : }
3909 0 : spdk_json_write_object_end(w);
3910 :
3911 0 : spdk_json_write_named_object_begin(w, "status_code");
3912 0 : for (sct = 0; sct < 4; sct++) {
3913 0 : status.sct = sct;
3914 0 : for (sc = 0; sc < 256; sc++) {
3915 0 : if (nbdev->err_stat->status[sct][sc] == 0) {
3916 0 : continue;
3917 : }
3918 0 : status.sc = sc;
3919 :
3920 0 : status_str = spdk_nvme_cpl_get_status_string(&status);
3921 0 : assert(status_str != NULL);
3922 0 : bdev_nvme_format_nvme_status(status_json, status_str);
3923 :
3924 0 : spdk_json_write_named_uint32(w, status_json, nbdev->err_stat->status[sct][sc]);
3925 : }
3926 : }
3927 0 : spdk_json_write_object_end(w);
3928 :
3929 0 : spdk_json_write_object_end(w);
3930 : }
3931 :
3932 : static bool
3933 0 : bdev_nvme_accel_sequence_supported(void *ctx, enum spdk_bdev_io_type type)
3934 : {
3935 0 : struct nvme_bdev *nbdev = ctx;
3936 : struct spdk_nvme_ctrlr *ctrlr;
3937 :
3938 0 : if (!g_opts.allow_accel_sequence) {
3939 0 : return false;
3940 : }
3941 :
3942 0 : switch (type) {
3943 0 : case SPDK_BDEV_IO_TYPE_WRITE:
3944 : case SPDK_BDEV_IO_TYPE_READ:
3945 0 : break;
3946 0 : default:
3947 0 : return false;
3948 : }
3949 :
3950 0 : ctrlr = bdev_nvme_get_ctrlr(&nbdev->disk);
3951 0 : assert(ctrlr != NULL);
3952 :
3953 0 : return spdk_nvme_ctrlr_get_flags(ctrlr) & SPDK_NVME_CTRLR_ACCEL_SEQUENCE_SUPPORTED;
3954 : }
3955 :
3956 : static const struct spdk_bdev_fn_table nvmelib_fn_table = {
3957 : .destruct = bdev_nvme_destruct,
3958 : .submit_request = bdev_nvme_submit_request,
3959 : .io_type_supported = bdev_nvme_io_type_supported,
3960 : .get_io_channel = bdev_nvme_get_io_channel,
3961 : .dump_info_json = bdev_nvme_dump_info_json,
3962 : .write_config_json = bdev_nvme_write_config_json,
3963 : .get_spin_time = bdev_nvme_get_spin_time,
3964 : .get_module_ctx = bdev_nvme_get_module_ctx,
3965 : .get_memory_domains = bdev_nvme_get_memory_domains,
3966 : .accel_sequence_supported = bdev_nvme_accel_sequence_supported,
3967 : .reset_device_stat = bdev_nvme_reset_device_stat,
3968 : .dump_device_stat_json = bdev_nvme_dump_device_stat_json,
3969 : };
3970 :
3971 : typedef int (*bdev_nvme_parse_ana_log_page_cb)(
3972 : const struct spdk_nvme_ana_group_descriptor *desc, void *cb_arg);
3973 :
3974 : static int
3975 40 : bdev_nvme_parse_ana_log_page(struct nvme_ctrlr *nvme_ctrlr,
3976 : bdev_nvme_parse_ana_log_page_cb cb_fn, void *cb_arg)
3977 : {
3978 : struct spdk_nvme_ana_group_descriptor *copied_desc;
3979 : uint8_t *orig_desc;
3980 : uint32_t i, desc_size, copy_len;
3981 40 : int rc = 0;
3982 :
3983 40 : if (nvme_ctrlr->ana_log_page == NULL) {
3984 0 : return -EINVAL;
3985 : }
3986 :
3987 40 : copied_desc = nvme_ctrlr->copied_ana_desc;
3988 :
3989 40 : orig_desc = (uint8_t *)nvme_ctrlr->ana_log_page + sizeof(struct spdk_nvme_ana_page);
3990 40 : copy_len = nvme_ctrlr->max_ana_log_page_size - sizeof(struct spdk_nvme_ana_page);
3991 :
3992 69 : for (i = 0; i < nvme_ctrlr->ana_log_page->num_ana_group_desc; i++) {
3993 65 : memcpy(copied_desc, orig_desc, copy_len);
3994 :
3995 65 : rc = cb_fn(copied_desc, cb_arg);
3996 65 : if (rc != 0) {
3997 36 : break;
3998 : }
3999 :
4000 29 : desc_size = sizeof(struct spdk_nvme_ana_group_descriptor) +
4001 29 : copied_desc->num_of_nsid * sizeof(uint32_t);
4002 29 : orig_desc += desc_size;
4003 29 : copy_len -= desc_size;
4004 : }
4005 :
4006 40 : return rc;
4007 : }
4008 :
4009 : static int
4010 5 : nvme_ns_ana_transition_timedout(void *ctx)
4011 : {
4012 5 : struct nvme_ns *nvme_ns = ctx;
4013 :
4014 5 : spdk_poller_unregister(&nvme_ns->anatt_timer);
4015 5 : nvme_ns->ana_transition_timedout = true;
4016 :
4017 5 : return SPDK_POLLER_BUSY;
4018 : }
4019 :
4020 : static void
4021 45 : _nvme_ns_set_ana_state(struct nvme_ns *nvme_ns,
4022 : const struct spdk_nvme_ana_group_descriptor *desc)
4023 : {
4024 : const struct spdk_nvme_ctrlr_data *cdata;
4025 :
4026 45 : nvme_ns->ana_group_id = desc->ana_group_id;
4027 45 : nvme_ns->ana_state = desc->ana_state;
4028 45 : nvme_ns->ana_state_updating = false;
4029 :
4030 45 : switch (nvme_ns->ana_state) {
4031 38 : case SPDK_NVME_ANA_OPTIMIZED_STATE:
4032 : case SPDK_NVME_ANA_NON_OPTIMIZED_STATE:
4033 38 : nvme_ns->ana_transition_timedout = false;
4034 38 : spdk_poller_unregister(&nvme_ns->anatt_timer);
4035 38 : break;
4036 :
4037 6 : case SPDK_NVME_ANA_INACCESSIBLE_STATE:
4038 : case SPDK_NVME_ANA_CHANGE_STATE:
4039 6 : if (nvme_ns->anatt_timer != NULL) {
4040 1 : break;
4041 : }
4042 :
4043 5 : cdata = spdk_nvme_ctrlr_get_data(nvme_ns->ctrlr->ctrlr);
4044 5 : nvme_ns->anatt_timer = SPDK_POLLER_REGISTER(nvme_ns_ana_transition_timedout,
4045 : nvme_ns,
4046 : cdata->anatt * SPDK_SEC_TO_USEC);
4047 5 : break;
4048 1 : default:
4049 1 : break;
4050 : }
4051 45 : }
4052 :
4053 : static int
4054 59 : nvme_ns_set_ana_state(const struct spdk_nvme_ana_group_descriptor *desc, void *cb_arg)
4055 : {
4056 59 : struct nvme_ns *nvme_ns = cb_arg;
4057 : uint32_t i;
4058 :
4059 59 : assert(nvme_ns->ns != NULL);
4060 :
4061 81 : for (i = 0; i < desc->num_of_nsid; i++) {
4062 58 : if (desc->nsid[i] != spdk_nvme_ns_get_id(nvme_ns->ns)) {
4063 22 : continue;
4064 : }
4065 :
4066 36 : _nvme_ns_set_ana_state(nvme_ns, desc);
4067 36 : return 1;
4068 : }
4069 :
4070 23 : return 0;
4071 : }
4072 :
4073 : static int
4074 5 : nvme_generate_uuid(const char *sn, uint32_t nsid, struct spdk_uuid *uuid)
4075 : {
4076 5 : int rc = 0;
4077 5 : struct spdk_uuid new_uuid, namespace_uuid;
4078 5 : char merged_str[SPDK_NVME_CTRLR_SN_LEN + NSID_STR_LEN + 1] = {'\0'};
4079 : /* This namespace UUID was generated using uuid_generate() method. */
4080 5 : const char *namespace_str = {"edaed2de-24bc-4b07-b559-f47ecbe730fd"};
4081 : int size;
4082 :
4083 5 : assert(strlen(sn) <= SPDK_NVME_CTRLR_SN_LEN);
4084 :
4085 5 : spdk_uuid_set_null(&new_uuid);
4086 5 : spdk_uuid_set_null(&namespace_uuid);
4087 :
4088 5 : size = snprintf(merged_str, sizeof(merged_str), "%s%"PRIu32, sn, nsid);
4089 5 : if (size <= 0 || (unsigned long)size >= sizeof(merged_str)) {
4090 0 : return -EINVAL;
4091 : }
4092 :
4093 5 : spdk_uuid_parse(&namespace_uuid, namespace_str);
4094 :
4095 5 : rc = spdk_uuid_generate_sha1(&new_uuid, &namespace_uuid, merged_str, size);
4096 5 : if (rc == 0) {
4097 5 : memcpy(uuid, &new_uuid, sizeof(struct spdk_uuid));
4098 : }
4099 :
4100 5 : return rc;
4101 : }
4102 :
4103 : static int
4104 37 : nvme_disk_create(struct spdk_bdev *disk, const char *base_name,
4105 : struct spdk_nvme_ctrlr *ctrlr, struct spdk_nvme_ns *ns,
4106 : uint32_t prchk_flags, void *ctx)
4107 : {
4108 : const struct spdk_uuid *uuid;
4109 : const uint8_t *nguid;
4110 : const struct spdk_nvme_ctrlr_data *cdata;
4111 : const struct spdk_nvme_ns_data *nsdata;
4112 : const struct spdk_nvme_ctrlr_opts *opts;
4113 : enum spdk_nvme_csi csi;
4114 : uint32_t atomic_bs, phys_bs, bs;
4115 37 : char sn_tmp[SPDK_NVME_CTRLR_SN_LEN + 1] = {'\0'};
4116 : int rc;
4117 :
4118 37 : cdata = spdk_nvme_ctrlr_get_data(ctrlr);
4119 37 : csi = spdk_nvme_ns_get_csi(ns);
4120 37 : opts = spdk_nvme_ctrlr_get_opts(ctrlr);
4121 :
4122 37 : switch (csi) {
4123 37 : case SPDK_NVME_CSI_NVM:
4124 37 : disk->product_name = "NVMe disk";
4125 37 : break;
4126 0 : case SPDK_NVME_CSI_ZNS:
4127 0 : disk->product_name = "NVMe ZNS disk";
4128 0 : disk->zoned = true;
4129 0 : disk->zone_size = spdk_nvme_zns_ns_get_zone_size_sectors(ns);
4130 0 : disk->max_zone_append_size = spdk_nvme_zns_ctrlr_get_max_zone_append_size(ctrlr) /
4131 0 : spdk_nvme_ns_get_extended_sector_size(ns);
4132 0 : disk->max_open_zones = spdk_nvme_zns_ns_get_max_open_zones(ns);
4133 0 : disk->max_active_zones = spdk_nvme_zns_ns_get_max_active_zones(ns);
4134 0 : break;
4135 0 : default:
4136 0 : SPDK_ERRLOG("unsupported CSI: %u\n", csi);
4137 0 : return -ENOTSUP;
4138 : }
4139 :
4140 37 : nguid = spdk_nvme_ns_get_nguid(ns);
4141 37 : if (!nguid) {
4142 37 : uuid = spdk_nvme_ns_get_uuid(ns);
4143 37 : if (uuid) {
4144 12 : disk->uuid = *uuid;
4145 25 : } else if (g_opts.generate_uuids) {
4146 0 : spdk_strcpy_pad(sn_tmp, cdata->sn, SPDK_NVME_CTRLR_SN_LEN, '\0');
4147 0 : rc = nvme_generate_uuid(sn_tmp, spdk_nvme_ns_get_id(ns), &disk->uuid);
4148 0 : if (rc < 0) {
4149 0 : SPDK_ERRLOG("UUID generation failed (%s)\n", spdk_strerror(-rc));
4150 0 : return rc;
4151 : }
4152 : }
4153 : } else {
4154 0 : memcpy(&disk->uuid, nguid, sizeof(disk->uuid));
4155 : }
4156 :
4157 37 : disk->name = spdk_sprintf_alloc("%sn%d", base_name, spdk_nvme_ns_get_id(ns));
4158 37 : if (!disk->name) {
4159 0 : return -ENOMEM;
4160 : }
4161 :
4162 37 : disk->write_cache = 0;
4163 37 : if (cdata->vwc.present) {
4164 : /* Enable if the Volatile Write Cache exists */
4165 0 : disk->write_cache = 1;
4166 : }
4167 37 : if (cdata->oncs.write_zeroes) {
4168 0 : disk->max_write_zeroes = UINT16_MAX + 1;
4169 : }
4170 37 : disk->blocklen = spdk_nvme_ns_get_extended_sector_size(ns);
4171 37 : disk->blockcnt = spdk_nvme_ns_get_num_sectors(ns);
4172 37 : disk->max_segment_size = spdk_nvme_ctrlr_get_max_xfer_size(ctrlr);
4173 37 : disk->ctratt.raw = cdata->ctratt.raw;
4174 : /* NVMe driver will split one request into multiple requests
4175 : * based on MDTS and stripe boundary, the bdev layer will use
4176 : * max_segment_size and max_num_segments to split one big IO
4177 : * into multiple requests, then small request can't run out
4178 : * of NVMe internal requests data structure.
4179 : */
4180 37 : if (opts && opts->io_queue_requests) {
4181 0 : disk->max_num_segments = opts->io_queue_requests / 2;
4182 : }
4183 37 : if (spdk_nvme_ctrlr_get_flags(ctrlr) & SPDK_NVME_CTRLR_SGL_SUPPORTED) {
4184 : /* The nvme driver will try to split I/O that have too many
4185 : * SGEs, but it doesn't work if that last SGE doesn't end on
4186 : * an aggregate total that is block aligned. The bdev layer has
4187 : * a more robust splitting framework, so use that instead for
4188 : * this case. (See issue #3269.)
4189 : */
4190 0 : uint16_t max_sges = spdk_nvme_ctrlr_get_max_sges(ctrlr);
4191 :
4192 0 : if (disk->max_num_segments == 0) {
4193 0 : disk->max_num_segments = max_sges;
4194 : } else {
4195 0 : disk->max_num_segments = spdk_min(disk->max_num_segments, max_sges);
4196 : }
4197 : }
4198 37 : disk->optimal_io_boundary = spdk_nvme_ns_get_optimal_io_boundary(ns);
4199 :
4200 37 : nsdata = spdk_nvme_ns_get_data(ns);
4201 37 : bs = spdk_nvme_ns_get_sector_size(ns);
4202 37 : atomic_bs = bs;
4203 37 : phys_bs = bs;
4204 37 : if (nsdata->nabo == 0) {
4205 37 : if (nsdata->nsfeat.ns_atomic_write_unit && nsdata->nawupf) {
4206 0 : atomic_bs = bs * (1 + nsdata->nawupf);
4207 : } else {
4208 37 : atomic_bs = bs * (1 + cdata->awupf);
4209 : }
4210 : }
4211 37 : if (nsdata->nsfeat.optperf) {
4212 0 : phys_bs = bs * (1 + nsdata->npwg);
4213 : }
4214 37 : disk->phys_blocklen = spdk_min(phys_bs, atomic_bs);
4215 :
4216 37 : disk->md_len = spdk_nvme_ns_get_md_size(ns);
4217 37 : if (disk->md_len != 0) {
4218 0 : disk->md_interleave = nsdata->flbas.extended;
4219 0 : disk->dif_type = (enum spdk_dif_type)spdk_nvme_ns_get_pi_type(ns);
4220 0 : if (disk->dif_type != SPDK_DIF_DISABLE) {
4221 0 : disk->dif_is_head_of_md = nsdata->dps.md_start;
4222 0 : disk->dif_check_flags = prchk_flags;
4223 : }
4224 : }
4225 :
4226 37 : if (!(spdk_nvme_ctrlr_get_flags(ctrlr) &
4227 : SPDK_NVME_CTRLR_COMPARE_AND_WRITE_SUPPORTED)) {
4228 37 : disk->acwu = 0;
4229 0 : } else if (nsdata->nsfeat.ns_atomic_write_unit) {
4230 0 : disk->acwu = nsdata->nacwu + 1; /* 0-based */
4231 : } else {
4232 0 : disk->acwu = cdata->acwu + 1; /* 0-based */
4233 : }
4234 :
4235 37 : if (cdata->oncs.copy) {
4236 : /* For now bdev interface allows only single segment copy */
4237 0 : disk->max_copy = nsdata->mssrl;
4238 : }
4239 :
4240 37 : disk->ctxt = ctx;
4241 37 : disk->fn_table = &nvmelib_fn_table;
4242 37 : disk->module = &nvme_if;
4243 :
4244 37 : return 0;
4245 : }
4246 :
4247 : static struct nvme_bdev *
4248 37 : nvme_bdev_alloc(void)
4249 : {
4250 : struct nvme_bdev *bdev;
4251 : int rc;
4252 :
4253 37 : bdev = calloc(1, sizeof(*bdev));
4254 37 : if (!bdev) {
4255 0 : SPDK_ERRLOG("bdev calloc() failed\n");
4256 0 : return NULL;
4257 : }
4258 :
4259 37 : if (g_opts.nvme_error_stat) {
4260 0 : bdev->err_stat = calloc(1, sizeof(struct nvme_error_stat));
4261 0 : if (!bdev->err_stat) {
4262 0 : SPDK_ERRLOG("err_stat calloc() failed\n");
4263 0 : free(bdev);
4264 0 : return NULL;
4265 : }
4266 : }
4267 :
4268 37 : rc = pthread_mutex_init(&bdev->mutex, NULL);
4269 37 : if (rc != 0) {
4270 0 : free(bdev->err_stat);
4271 0 : free(bdev);
4272 0 : return NULL;
4273 : }
4274 :
4275 37 : bdev->ref = 1;
4276 37 : bdev->mp_policy = BDEV_NVME_MP_POLICY_ACTIVE_PASSIVE;
4277 37 : bdev->mp_selector = BDEV_NVME_MP_SELECTOR_ROUND_ROBIN;
4278 37 : bdev->rr_min_io = UINT32_MAX;
4279 37 : TAILQ_INIT(&bdev->nvme_ns_list);
4280 :
4281 37 : return bdev;
4282 : }
4283 :
4284 : static int
4285 37 : nvme_bdev_create(struct nvme_ctrlr *nvme_ctrlr, struct nvme_ns *nvme_ns)
4286 : {
4287 : struct nvme_bdev *bdev;
4288 37 : struct nvme_bdev_ctrlr *nbdev_ctrlr = nvme_ctrlr->nbdev_ctrlr;
4289 : int rc;
4290 :
4291 37 : bdev = nvme_bdev_alloc();
4292 37 : if (bdev == NULL) {
4293 0 : SPDK_ERRLOG("Failed to allocate NVMe bdev\n");
4294 0 : return -ENOMEM;
4295 : }
4296 :
4297 37 : bdev->opal = nvme_ctrlr->opal_dev != NULL;
4298 :
4299 37 : rc = nvme_disk_create(&bdev->disk, nbdev_ctrlr->name, nvme_ctrlr->ctrlr,
4300 : nvme_ns->ns, nvme_ctrlr->opts.prchk_flags, bdev);
4301 37 : if (rc != 0) {
4302 0 : SPDK_ERRLOG("Failed to create NVMe disk\n");
4303 0 : nvme_bdev_free(bdev);
4304 0 : return rc;
4305 : }
4306 :
4307 37 : spdk_io_device_register(bdev,
4308 : bdev_nvme_create_bdev_channel_cb,
4309 : bdev_nvme_destroy_bdev_channel_cb,
4310 : sizeof(struct nvme_bdev_channel),
4311 37 : bdev->disk.name);
4312 :
4313 37 : nvme_ns->bdev = bdev;
4314 37 : bdev->nsid = nvme_ns->id;
4315 37 : TAILQ_INSERT_TAIL(&bdev->nvme_ns_list, nvme_ns, tailq);
4316 :
4317 37 : bdev->nbdev_ctrlr = nbdev_ctrlr;
4318 37 : TAILQ_INSERT_TAIL(&nbdev_ctrlr->bdevs, bdev, tailq);
4319 :
4320 37 : rc = spdk_bdev_register(&bdev->disk);
4321 37 : if (rc != 0) {
4322 1 : SPDK_ERRLOG("spdk_bdev_register() failed\n");
4323 1 : spdk_io_device_unregister(bdev, NULL);
4324 1 : nvme_ns->bdev = NULL;
4325 1 : TAILQ_REMOVE(&nbdev_ctrlr->bdevs, bdev, tailq);
4326 1 : nvme_bdev_free(bdev);
4327 1 : return rc;
4328 : }
4329 :
4330 36 : return 0;
4331 : }
4332 :
4333 : static bool
4334 23 : bdev_nvme_compare_ns(struct spdk_nvme_ns *ns1, struct spdk_nvme_ns *ns2)
4335 : {
4336 : const struct spdk_nvme_ns_data *nsdata1, *nsdata2;
4337 : const struct spdk_uuid *uuid1, *uuid2;
4338 :
4339 23 : nsdata1 = spdk_nvme_ns_get_data(ns1);
4340 23 : nsdata2 = spdk_nvme_ns_get_data(ns2);
4341 23 : uuid1 = spdk_nvme_ns_get_uuid(ns1);
4342 23 : uuid2 = spdk_nvme_ns_get_uuid(ns2);
4343 :
4344 45 : return memcmp(nsdata1->nguid, nsdata2->nguid, sizeof(nsdata1->nguid)) == 0 &&
4345 22 : nsdata1->eui64 == nsdata2->eui64 &&
4346 21 : ((uuid1 == NULL && uuid2 == NULL) ||
4347 59 : (uuid1 != NULL && uuid2 != NULL && spdk_uuid_compare(uuid1, uuid2) == 0)) &&
4348 18 : spdk_nvme_ns_get_csi(ns1) == spdk_nvme_ns_get_csi(ns2);
4349 : }
4350 :
4351 : static bool
4352 0 : hotplug_probe_cb(void *cb_ctx, const struct spdk_nvme_transport_id *trid,
4353 : struct spdk_nvme_ctrlr_opts *opts)
4354 : {
4355 : struct nvme_probe_skip_entry *entry;
4356 :
4357 0 : TAILQ_FOREACH(entry, &g_skipped_nvme_ctrlrs, tailq) {
4358 0 : if (spdk_nvme_transport_id_compare(trid, &entry->trid) == 0) {
4359 0 : return false;
4360 : }
4361 : }
4362 :
4363 0 : opts->arbitration_burst = (uint8_t)g_opts.arbitration_burst;
4364 0 : opts->low_priority_weight = (uint8_t)g_opts.low_priority_weight;
4365 0 : opts->medium_priority_weight = (uint8_t)g_opts.medium_priority_weight;
4366 0 : opts->high_priority_weight = (uint8_t)g_opts.high_priority_weight;
4367 0 : opts->disable_read_ana_log_page = true;
4368 :
4369 0 : SPDK_DEBUGLOG(bdev_nvme, "Attaching to %s\n", trid->traddr);
4370 :
4371 0 : return true;
4372 : }
4373 :
4374 : static void
4375 0 : nvme_abort_cpl(void *ctx, const struct spdk_nvme_cpl *cpl)
4376 : {
4377 0 : struct nvme_ctrlr *nvme_ctrlr = ctx;
4378 :
4379 0 : if (spdk_nvme_cpl_is_error(cpl)) {
4380 0 : SPDK_WARNLOG("Abort failed. Resetting controller. sc is %u, sct is %u.\n", cpl->status.sc,
4381 : cpl->status.sct);
4382 0 : bdev_nvme_reset_ctrlr(nvme_ctrlr);
4383 0 : } else if (cpl->cdw0 & 0x1) {
4384 0 : SPDK_WARNLOG("Specified command could not be aborted.\n");
4385 0 : bdev_nvme_reset_ctrlr(nvme_ctrlr);
4386 : }
4387 0 : }
4388 :
4389 : static void
4390 0 : timeout_cb(void *cb_arg, struct spdk_nvme_ctrlr *ctrlr,
4391 : struct spdk_nvme_qpair *qpair, uint16_t cid)
4392 : {
4393 0 : struct nvme_ctrlr *nvme_ctrlr = cb_arg;
4394 : union spdk_nvme_csts_register csts;
4395 : int rc;
4396 :
4397 0 : assert(nvme_ctrlr->ctrlr == ctrlr);
4398 :
4399 0 : SPDK_WARNLOG("Warning: Detected a timeout. ctrlr=%p qpair=%p cid=%u\n", ctrlr, qpair, cid);
4400 :
4401 : /* Only try to read CSTS if it's a PCIe controller or we have a timeout on an I/O
4402 : * queue. (Note: qpair == NULL when there's an admin cmd timeout.) Otherwise we
4403 : * would submit another fabrics cmd on the admin queue to read CSTS and check for its
4404 : * completion recursively.
4405 : */
4406 0 : if (nvme_ctrlr->active_path_id->trid.trtype == SPDK_NVME_TRANSPORT_PCIE || qpair != NULL) {
4407 0 : csts = spdk_nvme_ctrlr_get_regs_csts(ctrlr);
4408 0 : if (csts.bits.cfs) {
4409 0 : SPDK_ERRLOG("Controller Fatal Status, reset required\n");
4410 0 : bdev_nvme_reset_ctrlr(nvme_ctrlr);
4411 0 : return;
4412 : }
4413 : }
4414 :
4415 0 : switch (g_opts.action_on_timeout) {
4416 0 : case SPDK_BDEV_NVME_TIMEOUT_ACTION_ABORT:
4417 0 : if (qpair) {
4418 : /* Don't send abort to ctrlr when ctrlr is not available. */
4419 0 : pthread_mutex_lock(&nvme_ctrlr->mutex);
4420 0 : if (!nvme_ctrlr_is_available(nvme_ctrlr)) {
4421 0 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
4422 0 : SPDK_NOTICELOG("Quit abort. Ctrlr is not available.\n");
4423 0 : return;
4424 : }
4425 0 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
4426 :
4427 0 : rc = spdk_nvme_ctrlr_cmd_abort(ctrlr, qpair, cid,
4428 : nvme_abort_cpl, nvme_ctrlr);
4429 0 : if (rc == 0) {
4430 0 : return;
4431 : }
4432 :
4433 0 : SPDK_ERRLOG("Unable to send abort. Resetting, rc is %d.\n", rc);
4434 : }
4435 :
4436 : /* FALLTHROUGH */
4437 : case SPDK_BDEV_NVME_TIMEOUT_ACTION_RESET:
4438 0 : bdev_nvme_reset_ctrlr(nvme_ctrlr);
4439 0 : break;
4440 0 : case SPDK_BDEV_NVME_TIMEOUT_ACTION_NONE:
4441 0 : SPDK_DEBUGLOG(bdev_nvme, "No action for nvme controller timeout.\n");
4442 0 : break;
4443 0 : default:
4444 0 : SPDK_ERRLOG("An invalid timeout action value is found.\n");
4445 0 : break;
4446 : }
4447 : }
4448 :
4449 : static struct nvme_ns *
4450 50 : nvme_ns_alloc(void)
4451 : {
4452 : struct nvme_ns *nvme_ns;
4453 :
4454 50 : nvme_ns = calloc(1, sizeof(struct nvme_ns));
4455 50 : if (nvme_ns == NULL) {
4456 0 : return NULL;
4457 : }
4458 :
4459 50 : if (g_opts.io_path_stat) {
4460 0 : nvme_ns->stat = calloc(1, sizeof(struct spdk_bdev_io_stat));
4461 0 : if (nvme_ns->stat == NULL) {
4462 0 : free(nvme_ns);
4463 0 : return NULL;
4464 : }
4465 0 : spdk_bdev_reset_io_stat(nvme_ns->stat, SPDK_BDEV_RESET_STAT_MAXMIN);
4466 : }
4467 :
4468 50 : return nvme_ns;
4469 : }
4470 :
4471 : static void
4472 50 : nvme_ns_free(struct nvme_ns *nvme_ns)
4473 : {
4474 50 : free(nvme_ns->stat);
4475 50 : free(nvme_ns);
4476 50 : }
4477 :
4478 : static void
4479 50 : nvme_ctrlr_populate_namespace_done(struct nvme_ns *nvme_ns, int rc)
4480 : {
4481 50 : struct nvme_ctrlr *nvme_ctrlr = nvme_ns->ctrlr;
4482 50 : struct nvme_async_probe_ctx *ctx = nvme_ns->probe_ctx;
4483 :
4484 50 : if (rc == 0) {
4485 48 : nvme_ns->probe_ctx = NULL;
4486 48 : pthread_mutex_lock(&nvme_ctrlr->mutex);
4487 48 : nvme_ctrlr->ref++;
4488 48 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
4489 : } else {
4490 2 : RB_REMOVE(nvme_ns_tree, &nvme_ctrlr->namespaces, nvme_ns);
4491 2 : nvme_ns_free(nvme_ns);
4492 : }
4493 :
4494 50 : if (ctx) {
4495 49 : ctx->populates_in_progress--;
4496 49 : if (ctx->populates_in_progress == 0) {
4497 12 : nvme_ctrlr_populate_namespaces_done(nvme_ctrlr, ctx);
4498 : }
4499 : }
4500 50 : }
4501 :
4502 : static void
4503 2 : bdev_nvme_add_io_path(struct spdk_io_channel_iter *i)
4504 : {
4505 2 : struct spdk_io_channel *_ch = spdk_io_channel_iter_get_channel(i);
4506 2 : struct nvme_bdev_channel *nbdev_ch = spdk_io_channel_get_ctx(_ch);
4507 2 : struct nvme_ns *nvme_ns = spdk_io_channel_iter_get_ctx(i);
4508 : int rc;
4509 :
4510 2 : rc = _bdev_nvme_add_io_path(nbdev_ch, nvme_ns);
4511 2 : if (rc != 0) {
4512 0 : SPDK_ERRLOG("Failed to add I/O path to bdev_channel dynamically.\n");
4513 : }
4514 :
4515 2 : spdk_for_each_channel_continue(i, rc);
4516 2 : }
4517 :
4518 : static void
4519 2 : bdev_nvme_delete_io_path(struct spdk_io_channel_iter *i)
4520 : {
4521 2 : struct spdk_io_channel *_ch = spdk_io_channel_iter_get_channel(i);
4522 2 : struct nvme_bdev_channel *nbdev_ch = spdk_io_channel_get_ctx(_ch);
4523 2 : struct nvme_ns *nvme_ns = spdk_io_channel_iter_get_ctx(i);
4524 : struct nvme_io_path *io_path;
4525 :
4526 2 : io_path = _bdev_nvme_get_io_path(nbdev_ch, nvme_ns);
4527 2 : if (io_path != NULL) {
4528 2 : _bdev_nvme_delete_io_path(nbdev_ch, io_path);
4529 : }
4530 :
4531 2 : spdk_for_each_channel_continue(i, 0);
4532 2 : }
4533 :
4534 : static void
4535 0 : bdev_nvme_add_io_path_failed(struct spdk_io_channel_iter *i, int status)
4536 : {
4537 0 : struct nvme_ns *nvme_ns = spdk_io_channel_iter_get_ctx(i);
4538 :
4539 0 : nvme_ctrlr_populate_namespace_done(nvme_ns, -1);
4540 0 : }
4541 :
4542 : static void
4543 12 : bdev_nvme_add_io_path_done(struct spdk_io_channel_iter *i, int status)
4544 : {
4545 12 : struct nvme_ns *nvme_ns = spdk_io_channel_iter_get_ctx(i);
4546 12 : struct nvme_bdev *bdev = spdk_io_channel_iter_get_io_device(i);
4547 :
4548 12 : if (status == 0) {
4549 12 : nvme_ctrlr_populate_namespace_done(nvme_ns, 0);
4550 : } else {
4551 : /* Delete the added io_paths and fail populating the namespace. */
4552 0 : spdk_for_each_channel(bdev,
4553 : bdev_nvme_delete_io_path,
4554 : nvme_ns,
4555 : bdev_nvme_add_io_path_failed);
4556 : }
4557 12 : }
4558 :
4559 : static int
4560 13 : nvme_bdev_add_ns(struct nvme_bdev *bdev, struct nvme_ns *nvme_ns)
4561 : {
4562 : struct nvme_ns *tmp_ns;
4563 : const struct spdk_nvme_ns_data *nsdata;
4564 :
4565 13 : nsdata = spdk_nvme_ns_get_data(nvme_ns->ns);
4566 13 : if (!nsdata->nmic.can_share) {
4567 0 : SPDK_ERRLOG("Namespace cannot be shared.\n");
4568 0 : return -EINVAL;
4569 : }
4570 :
4571 13 : pthread_mutex_lock(&bdev->mutex);
4572 :
4573 13 : tmp_ns = TAILQ_FIRST(&bdev->nvme_ns_list);
4574 13 : assert(tmp_ns != NULL);
4575 :
4576 13 : if (tmp_ns->ns != NULL && !bdev_nvme_compare_ns(nvme_ns->ns, tmp_ns->ns)) {
4577 1 : pthread_mutex_unlock(&bdev->mutex);
4578 1 : SPDK_ERRLOG("Namespaces are not identical.\n");
4579 1 : return -EINVAL;
4580 : }
4581 :
4582 12 : bdev->ref++;
4583 12 : TAILQ_INSERT_TAIL(&bdev->nvme_ns_list, nvme_ns, tailq);
4584 12 : nvme_ns->bdev = bdev;
4585 :
4586 12 : pthread_mutex_unlock(&bdev->mutex);
4587 :
4588 : /* Add nvme_io_path to nvme_bdev_channels dynamically. */
4589 12 : spdk_for_each_channel(bdev,
4590 : bdev_nvme_add_io_path,
4591 : nvme_ns,
4592 : bdev_nvme_add_io_path_done);
4593 :
4594 12 : return 0;
4595 : }
4596 :
4597 : static void
4598 50 : nvme_ctrlr_populate_namespace(struct nvme_ctrlr *nvme_ctrlr, struct nvme_ns *nvme_ns)
4599 : {
4600 : struct spdk_nvme_ns *ns;
4601 : struct nvme_bdev *bdev;
4602 50 : int rc = 0;
4603 :
4604 50 : ns = spdk_nvme_ctrlr_get_ns(nvme_ctrlr->ctrlr, nvme_ns->id);
4605 50 : if (!ns) {
4606 0 : SPDK_DEBUGLOG(bdev_nvme, "Invalid NS %d\n", nvme_ns->id);
4607 0 : rc = -EINVAL;
4608 0 : goto done;
4609 : }
4610 :
4611 50 : nvme_ns->ns = ns;
4612 50 : nvme_ns->ana_state = SPDK_NVME_ANA_OPTIMIZED_STATE;
4613 :
4614 50 : if (nvme_ctrlr->ana_log_page != NULL) {
4615 37 : bdev_nvme_parse_ana_log_page(nvme_ctrlr, nvme_ns_set_ana_state, nvme_ns);
4616 : }
4617 :
4618 50 : bdev = nvme_bdev_ctrlr_get_bdev(nvme_ctrlr->nbdev_ctrlr, nvme_ns->id);
4619 50 : if (bdev == NULL) {
4620 37 : rc = nvme_bdev_create(nvme_ctrlr, nvme_ns);
4621 : } else {
4622 13 : rc = nvme_bdev_add_ns(bdev, nvme_ns);
4623 13 : if (rc == 0) {
4624 12 : return;
4625 : }
4626 : }
4627 1 : done:
4628 38 : nvme_ctrlr_populate_namespace_done(nvme_ns, rc);
4629 : }
4630 :
4631 : static void
4632 48 : nvme_ctrlr_depopulate_namespace_done(struct nvme_ns *nvme_ns)
4633 : {
4634 48 : struct nvme_ctrlr *nvme_ctrlr = nvme_ns->ctrlr;
4635 :
4636 48 : assert(nvme_ctrlr != NULL);
4637 :
4638 48 : pthread_mutex_lock(&nvme_ctrlr->mutex);
4639 :
4640 48 : RB_REMOVE(nvme_ns_tree, &nvme_ctrlr->namespaces, nvme_ns);
4641 :
4642 48 : if (nvme_ns->bdev != NULL) {
4643 0 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
4644 0 : return;
4645 : }
4646 :
4647 48 : nvme_ns_free(nvme_ns);
4648 48 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
4649 :
4650 48 : nvme_ctrlr_release(nvme_ctrlr);
4651 : }
4652 :
4653 : static void
4654 11 : bdev_nvme_delete_io_path_done(struct spdk_io_channel_iter *i, int status)
4655 : {
4656 11 : struct nvme_ns *nvme_ns = spdk_io_channel_iter_get_ctx(i);
4657 :
4658 11 : nvme_ctrlr_depopulate_namespace_done(nvme_ns);
4659 11 : }
4660 :
4661 : static void
4662 48 : nvme_ctrlr_depopulate_namespace(struct nvme_ctrlr *nvme_ctrlr, struct nvme_ns *nvme_ns)
4663 : {
4664 : struct nvme_bdev *bdev;
4665 :
4666 48 : spdk_poller_unregister(&nvme_ns->anatt_timer);
4667 :
4668 48 : bdev = nvme_ns->bdev;
4669 48 : if (bdev != NULL) {
4670 44 : pthread_mutex_lock(&bdev->mutex);
4671 :
4672 44 : assert(bdev->ref > 0);
4673 44 : bdev->ref--;
4674 44 : if (bdev->ref == 0) {
4675 33 : pthread_mutex_unlock(&bdev->mutex);
4676 :
4677 33 : spdk_bdev_unregister(&bdev->disk, NULL, NULL);
4678 : } else {
4679 : /* spdk_bdev_unregister() is not called until the last nvme_ns is
4680 : * depopulated. Hence we need to remove nvme_ns from bdev->nvme_ns_list
4681 : * and clear nvme_ns->bdev here.
4682 : */
4683 11 : TAILQ_REMOVE(&bdev->nvme_ns_list, nvme_ns, tailq);
4684 11 : nvme_ns->bdev = NULL;
4685 :
4686 11 : pthread_mutex_unlock(&bdev->mutex);
4687 :
4688 : /* Delete nvme_io_paths from nvme_bdev_channels dynamically. After that,
4689 : * we call depopulate_namespace_done() to avoid use-after-free.
4690 : */
4691 11 : spdk_for_each_channel(bdev,
4692 : bdev_nvme_delete_io_path,
4693 : nvme_ns,
4694 : bdev_nvme_delete_io_path_done);
4695 11 : return;
4696 : }
4697 : }
4698 :
4699 37 : nvme_ctrlr_depopulate_namespace_done(nvme_ns);
4700 : }
4701 :
4702 : static void
4703 61 : nvme_ctrlr_populate_namespaces(struct nvme_ctrlr *nvme_ctrlr,
4704 : struct nvme_async_probe_ctx *ctx)
4705 : {
4706 61 : struct spdk_nvme_ctrlr *ctrlr = nvme_ctrlr->ctrlr;
4707 : struct nvme_ns *nvme_ns, *next;
4708 : struct spdk_nvme_ns *ns;
4709 : struct nvme_bdev *bdev;
4710 : uint32_t nsid;
4711 : int rc;
4712 : uint64_t num_sectors;
4713 :
4714 61 : if (ctx) {
4715 : /* Initialize this count to 1 to handle the populate functions
4716 : * calling nvme_ctrlr_populate_namespace_done() immediately.
4717 : */
4718 45 : ctx->populates_in_progress = 1;
4719 : }
4720 :
4721 : /* First loop over our existing namespaces and see if they have been
4722 : * removed. */
4723 61 : nvme_ns = nvme_ctrlr_get_first_active_ns(nvme_ctrlr);
4724 65 : while (nvme_ns != NULL) {
4725 4 : next = nvme_ctrlr_get_next_active_ns(nvme_ctrlr, nvme_ns);
4726 :
4727 4 : if (spdk_nvme_ctrlr_is_active_ns(ctrlr, nvme_ns->id)) {
4728 : /* NS is still there or added again. Its attributes may have changed. */
4729 3 : ns = spdk_nvme_ctrlr_get_ns(ctrlr, nvme_ns->id);
4730 3 : if (nvme_ns->ns != ns) {
4731 1 : assert(nvme_ns->ns == NULL);
4732 1 : nvme_ns->ns = ns;
4733 1 : SPDK_DEBUGLOG(bdev_nvme, "NSID %u was added\n", nvme_ns->id);
4734 : }
4735 :
4736 3 : num_sectors = spdk_nvme_ns_get_num_sectors(ns);
4737 3 : bdev = nvme_ns->bdev;
4738 3 : assert(bdev != NULL);
4739 3 : if (bdev->disk.blockcnt != num_sectors) {
4740 1 : SPDK_NOTICELOG("NSID %u is resized: bdev name %s, old size %" PRIu64 ", new size %" PRIu64 "\n",
4741 : nvme_ns->id,
4742 : bdev->disk.name,
4743 : bdev->disk.blockcnt,
4744 : num_sectors);
4745 1 : rc = spdk_bdev_notify_blockcnt_change(&bdev->disk, num_sectors);
4746 1 : if (rc != 0) {
4747 0 : SPDK_ERRLOG("Could not change num blocks for nvme bdev: name %s, errno: %d.\n",
4748 : bdev->disk.name, rc);
4749 : }
4750 : }
4751 : } else {
4752 : /* Namespace was removed */
4753 1 : nvme_ctrlr_depopulate_namespace(nvme_ctrlr, nvme_ns);
4754 : }
4755 :
4756 4 : nvme_ns = next;
4757 : }
4758 :
4759 : /* Loop through all of the namespaces at the nvme level and see if any of them are new */
4760 61 : nsid = spdk_nvme_ctrlr_get_first_active_ns(ctrlr);
4761 114 : while (nsid != 0) {
4762 53 : nvme_ns = nvme_ctrlr_get_ns(nvme_ctrlr, nsid);
4763 :
4764 53 : if (nvme_ns == NULL) {
4765 : /* Found a new one */
4766 50 : nvme_ns = nvme_ns_alloc();
4767 50 : if (nvme_ns == NULL) {
4768 0 : SPDK_ERRLOG("Failed to allocate namespace\n");
4769 : /* This just fails to attach the namespace. It may work on a future attempt. */
4770 0 : continue;
4771 : }
4772 :
4773 50 : nvme_ns->id = nsid;
4774 50 : nvme_ns->ctrlr = nvme_ctrlr;
4775 :
4776 50 : nvme_ns->bdev = NULL;
4777 :
4778 50 : if (ctx) {
4779 49 : ctx->populates_in_progress++;
4780 : }
4781 50 : nvme_ns->probe_ctx = ctx;
4782 :
4783 50 : RB_INSERT(nvme_ns_tree, &nvme_ctrlr->namespaces, nvme_ns);
4784 :
4785 50 : nvme_ctrlr_populate_namespace(nvme_ctrlr, nvme_ns);
4786 : }
4787 :
4788 53 : nsid = spdk_nvme_ctrlr_get_next_active_ns(ctrlr, nsid);
4789 : }
4790 :
4791 61 : if (ctx) {
4792 : /* Decrement this count now that the loop is over to account
4793 : * for the one we started with. If the count is then 0, we
4794 : * know any populate_namespace functions completed immediately,
4795 : * so we'll kick the callback here.
4796 : */
4797 45 : ctx->populates_in_progress--;
4798 45 : if (ctx->populates_in_progress == 0) {
4799 33 : nvme_ctrlr_populate_namespaces_done(nvme_ctrlr, ctx);
4800 : }
4801 : }
4802 :
4803 61 : }
4804 :
4805 : static void
4806 59 : nvme_ctrlr_depopulate_namespaces(struct nvme_ctrlr *nvme_ctrlr)
4807 : {
4808 : struct nvme_ns *nvme_ns, *tmp;
4809 :
4810 106 : RB_FOREACH_SAFE(nvme_ns, nvme_ns_tree, &nvme_ctrlr->namespaces, tmp) {
4811 47 : nvme_ctrlr_depopulate_namespace(nvme_ctrlr, nvme_ns);
4812 : }
4813 59 : }
4814 :
4815 : static uint32_t
4816 36 : nvme_ctrlr_get_ana_log_page_size(struct nvme_ctrlr *nvme_ctrlr)
4817 : {
4818 36 : struct spdk_nvme_ctrlr *ctrlr = nvme_ctrlr->ctrlr;
4819 : const struct spdk_nvme_ctrlr_data *cdata;
4820 36 : uint32_t nsid, ns_count = 0;
4821 :
4822 36 : cdata = spdk_nvme_ctrlr_get_data(ctrlr);
4823 :
4824 80 : for (nsid = spdk_nvme_ctrlr_get_first_active_ns(ctrlr);
4825 44 : nsid != 0; nsid = spdk_nvme_ctrlr_get_next_active_ns(ctrlr, nsid)) {
4826 44 : ns_count++;
4827 : }
4828 :
4829 36 : return sizeof(struct spdk_nvme_ana_page) + cdata->nanagrpid *
4830 36 : sizeof(struct spdk_nvme_ana_group_descriptor) + ns_count *
4831 : sizeof(uint32_t);
4832 : }
4833 :
4834 : static int
4835 6 : nvme_ctrlr_set_ana_states(const struct spdk_nvme_ana_group_descriptor *desc,
4836 : void *cb_arg)
4837 : {
4838 6 : struct nvme_ctrlr *nvme_ctrlr = cb_arg;
4839 : struct nvme_ns *nvme_ns;
4840 : uint32_t i, nsid;
4841 :
4842 11 : for (i = 0; i < desc->num_of_nsid; i++) {
4843 5 : nsid = desc->nsid[i];
4844 5 : if (nsid == 0) {
4845 0 : continue;
4846 : }
4847 :
4848 5 : nvme_ns = nvme_ctrlr_get_ns(nvme_ctrlr, nsid);
4849 :
4850 5 : assert(nvme_ns != NULL);
4851 5 : if (nvme_ns == NULL) {
4852 : /* Target told us that an inactive namespace had an ANA change */
4853 0 : continue;
4854 : }
4855 :
4856 5 : _nvme_ns_set_ana_state(nvme_ns, desc);
4857 : }
4858 :
4859 6 : return 0;
4860 : }
4861 :
4862 : static void
4863 0 : bdev_nvme_disable_read_ana_log_page(struct nvme_ctrlr *nvme_ctrlr)
4864 : {
4865 : struct nvme_ns *nvme_ns;
4866 :
4867 0 : spdk_free(nvme_ctrlr->ana_log_page);
4868 0 : nvme_ctrlr->ana_log_page = NULL;
4869 :
4870 0 : for (nvme_ns = nvme_ctrlr_get_first_active_ns(nvme_ctrlr);
4871 : nvme_ns != NULL;
4872 0 : nvme_ns = nvme_ctrlr_get_next_active_ns(nvme_ctrlr, nvme_ns)) {
4873 0 : nvme_ns->ana_state_updating = false;
4874 0 : nvme_ns->ana_state = SPDK_NVME_ANA_OPTIMIZED_STATE;
4875 : }
4876 0 : }
4877 :
4878 : static void
4879 3 : nvme_ctrlr_read_ana_log_page_done(void *ctx, const struct spdk_nvme_cpl *cpl)
4880 : {
4881 3 : struct nvme_ctrlr *nvme_ctrlr = ctx;
4882 :
4883 3 : if (cpl != NULL && spdk_nvme_cpl_is_success(cpl)) {
4884 3 : bdev_nvme_parse_ana_log_page(nvme_ctrlr, nvme_ctrlr_set_ana_states,
4885 : nvme_ctrlr);
4886 : } else {
4887 0 : bdev_nvme_disable_read_ana_log_page(nvme_ctrlr);
4888 : }
4889 :
4890 3 : pthread_mutex_lock(&nvme_ctrlr->mutex);
4891 :
4892 3 : assert(nvme_ctrlr->ana_log_page_updating == true);
4893 3 : nvme_ctrlr->ana_log_page_updating = false;
4894 :
4895 3 : if (nvme_ctrlr_can_be_unregistered(nvme_ctrlr)) {
4896 0 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
4897 :
4898 0 : nvme_ctrlr_unregister(nvme_ctrlr);
4899 : } else {
4900 3 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
4901 :
4902 3 : bdev_nvme_clear_io_path_caches(nvme_ctrlr);
4903 : }
4904 3 : }
4905 :
4906 : static int
4907 6 : nvme_ctrlr_read_ana_log_page(struct nvme_ctrlr *nvme_ctrlr)
4908 : {
4909 : uint32_t ana_log_page_size;
4910 : int rc;
4911 :
4912 6 : if (nvme_ctrlr->ana_log_page == NULL) {
4913 0 : return -EINVAL;
4914 : }
4915 :
4916 6 : ana_log_page_size = nvme_ctrlr_get_ana_log_page_size(nvme_ctrlr);
4917 :
4918 6 : if (ana_log_page_size > nvme_ctrlr->max_ana_log_page_size) {
4919 0 : SPDK_ERRLOG("ANA log page size %" PRIu32 " is larger than allowed %" PRIu32 "\n",
4920 : ana_log_page_size, nvme_ctrlr->max_ana_log_page_size);
4921 0 : return -EINVAL;
4922 : }
4923 :
4924 6 : pthread_mutex_lock(&nvme_ctrlr->mutex);
4925 6 : if (!nvme_ctrlr_is_available(nvme_ctrlr) ||
4926 : nvme_ctrlr->ana_log_page_updating) {
4927 3 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
4928 3 : return -EBUSY;
4929 : }
4930 :
4931 3 : nvme_ctrlr->ana_log_page_updating = true;
4932 3 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
4933 :
4934 3 : rc = spdk_nvme_ctrlr_cmd_get_log_page(nvme_ctrlr->ctrlr,
4935 : SPDK_NVME_LOG_ASYMMETRIC_NAMESPACE_ACCESS,
4936 : SPDK_NVME_GLOBAL_NS_TAG,
4937 3 : nvme_ctrlr->ana_log_page,
4938 : ana_log_page_size, 0,
4939 : nvme_ctrlr_read_ana_log_page_done,
4940 : nvme_ctrlr);
4941 3 : if (rc != 0) {
4942 0 : nvme_ctrlr_read_ana_log_page_done(nvme_ctrlr, NULL);
4943 : }
4944 :
4945 3 : return rc;
4946 : }
4947 :
4948 : static void
4949 0 : dummy_bdev_event_cb(enum spdk_bdev_event_type type, struct spdk_bdev *bdev, void *ctx)
4950 : {
4951 0 : }
4952 :
4953 : struct bdev_nvme_set_preferred_path_ctx {
4954 : struct spdk_bdev_desc *desc;
4955 : struct nvme_ns *nvme_ns;
4956 : bdev_nvme_set_preferred_path_cb cb_fn;
4957 : void *cb_arg;
4958 : };
4959 :
4960 : static void
4961 3 : bdev_nvme_set_preferred_path_done(struct spdk_io_channel_iter *i, int status)
4962 : {
4963 3 : struct bdev_nvme_set_preferred_path_ctx *ctx = spdk_io_channel_iter_get_ctx(i);
4964 :
4965 3 : assert(ctx != NULL);
4966 3 : assert(ctx->desc != NULL);
4967 3 : assert(ctx->cb_fn != NULL);
4968 :
4969 3 : spdk_bdev_close(ctx->desc);
4970 :
4971 3 : ctx->cb_fn(ctx->cb_arg, status);
4972 :
4973 3 : free(ctx);
4974 3 : }
4975 :
4976 : static void
4977 2 : _bdev_nvme_set_preferred_path(struct spdk_io_channel_iter *i)
4978 : {
4979 2 : struct bdev_nvme_set_preferred_path_ctx *ctx = spdk_io_channel_iter_get_ctx(i);
4980 2 : struct spdk_io_channel *_ch = spdk_io_channel_iter_get_channel(i);
4981 2 : struct nvme_bdev_channel *nbdev_ch = spdk_io_channel_get_ctx(_ch);
4982 : struct nvme_io_path *io_path, *prev;
4983 :
4984 2 : prev = NULL;
4985 3 : STAILQ_FOREACH(io_path, &nbdev_ch->io_path_list, stailq) {
4986 3 : if (io_path->nvme_ns == ctx->nvme_ns) {
4987 2 : break;
4988 : }
4989 1 : prev = io_path;
4990 : }
4991 :
4992 2 : if (io_path != NULL) {
4993 2 : if (prev != NULL) {
4994 1 : STAILQ_REMOVE_AFTER(&nbdev_ch->io_path_list, prev, stailq);
4995 1 : STAILQ_INSERT_HEAD(&nbdev_ch->io_path_list, io_path, stailq);
4996 : }
4997 :
4998 : /* We can set io_path to nbdev_ch->current_io_path directly here.
4999 : * However, it needs to be conditional. To simplify the code,
5000 : * just clear nbdev_ch->current_io_path and let find_io_path()
5001 : * fill it.
5002 : *
5003 : * Automatic failback may be disabled. Hence even if the io_path is
5004 : * already at the head, clear nbdev_ch->current_io_path.
5005 : */
5006 2 : bdev_nvme_clear_current_io_path(nbdev_ch);
5007 : }
5008 :
5009 2 : spdk_for_each_channel_continue(i, 0);
5010 2 : }
5011 :
5012 : static struct nvme_ns *
5013 3 : bdev_nvme_set_preferred_ns(struct nvme_bdev *nbdev, uint16_t cntlid)
5014 : {
5015 : struct nvme_ns *nvme_ns, *prev;
5016 : const struct spdk_nvme_ctrlr_data *cdata;
5017 :
5018 3 : prev = NULL;
5019 6 : TAILQ_FOREACH(nvme_ns, &nbdev->nvme_ns_list, tailq) {
5020 6 : cdata = spdk_nvme_ctrlr_get_data(nvme_ns->ctrlr->ctrlr);
5021 :
5022 6 : if (cdata->cntlid == cntlid) {
5023 3 : break;
5024 : }
5025 3 : prev = nvme_ns;
5026 : }
5027 :
5028 3 : if (nvme_ns != NULL && prev != NULL) {
5029 2 : TAILQ_REMOVE(&nbdev->nvme_ns_list, nvme_ns, tailq);
5030 2 : TAILQ_INSERT_HEAD(&nbdev->nvme_ns_list, nvme_ns, tailq);
5031 : }
5032 :
5033 3 : return nvme_ns;
5034 : }
5035 :
5036 : /* This function supports only multipath mode. There is only a single I/O path
5037 : * for each NVMe-oF controller. Hence, just move the matched I/O path to the
5038 : * head of the I/O path list for each NVMe bdev channel.
5039 : *
5040 : * NVMe bdev channel may be acquired after completing this function. move the
5041 : * matched namespace to the head of the namespace list for the NVMe bdev too.
5042 : */
5043 : void
5044 3 : bdev_nvme_set_preferred_path(const char *name, uint16_t cntlid,
5045 : bdev_nvme_set_preferred_path_cb cb_fn, void *cb_arg)
5046 : {
5047 : struct bdev_nvme_set_preferred_path_ctx *ctx;
5048 : struct spdk_bdev *bdev;
5049 : struct nvme_bdev *nbdev;
5050 3 : int rc = 0;
5051 :
5052 3 : assert(cb_fn != NULL);
5053 :
5054 3 : ctx = calloc(1, sizeof(*ctx));
5055 3 : if (ctx == NULL) {
5056 0 : SPDK_ERRLOG("Failed to alloc context.\n");
5057 0 : rc = -ENOMEM;
5058 0 : goto err_alloc;
5059 : }
5060 :
5061 3 : ctx->cb_fn = cb_fn;
5062 3 : ctx->cb_arg = cb_arg;
5063 :
5064 3 : rc = spdk_bdev_open_ext(name, false, dummy_bdev_event_cb, NULL, &ctx->desc);
5065 3 : if (rc != 0) {
5066 0 : SPDK_ERRLOG("Failed to open bdev %s.\n", name);
5067 0 : goto err_open;
5068 : }
5069 :
5070 3 : bdev = spdk_bdev_desc_get_bdev(ctx->desc);
5071 :
5072 3 : if (bdev->module != &nvme_if) {
5073 0 : SPDK_ERRLOG("bdev %s is not registered in this module.\n", name);
5074 0 : rc = -ENODEV;
5075 0 : goto err_bdev;
5076 : }
5077 :
5078 3 : nbdev = SPDK_CONTAINEROF(bdev, struct nvme_bdev, disk);
5079 :
5080 3 : pthread_mutex_lock(&nbdev->mutex);
5081 :
5082 3 : ctx->nvme_ns = bdev_nvme_set_preferred_ns(nbdev, cntlid);
5083 3 : if (ctx->nvme_ns == NULL) {
5084 0 : pthread_mutex_unlock(&nbdev->mutex);
5085 :
5086 0 : SPDK_ERRLOG("bdev %s does not have namespace to controller %u.\n", name, cntlid);
5087 0 : rc = -ENODEV;
5088 0 : goto err_bdev;
5089 : }
5090 :
5091 3 : pthread_mutex_unlock(&nbdev->mutex);
5092 :
5093 3 : spdk_for_each_channel(nbdev,
5094 : _bdev_nvme_set_preferred_path,
5095 : ctx,
5096 : bdev_nvme_set_preferred_path_done);
5097 3 : return;
5098 :
5099 0 : err_bdev:
5100 0 : spdk_bdev_close(ctx->desc);
5101 0 : err_open:
5102 0 : free(ctx);
5103 0 : err_alloc:
5104 0 : cb_fn(cb_arg, rc);
5105 : }
5106 :
5107 : struct bdev_nvme_set_multipath_policy_ctx {
5108 : struct spdk_bdev_desc *desc;
5109 : bdev_nvme_set_multipath_policy_cb cb_fn;
5110 : void *cb_arg;
5111 : };
5112 :
5113 : static void
5114 3 : bdev_nvme_set_multipath_policy_done(struct spdk_io_channel_iter *i, int status)
5115 : {
5116 3 : struct bdev_nvme_set_multipath_policy_ctx *ctx = spdk_io_channel_iter_get_ctx(i);
5117 :
5118 3 : assert(ctx != NULL);
5119 3 : assert(ctx->desc != NULL);
5120 3 : assert(ctx->cb_fn != NULL);
5121 :
5122 3 : spdk_bdev_close(ctx->desc);
5123 :
5124 3 : ctx->cb_fn(ctx->cb_arg, status);
5125 :
5126 3 : free(ctx);
5127 3 : }
5128 :
5129 : static void
5130 1 : _bdev_nvme_set_multipath_policy(struct spdk_io_channel_iter *i)
5131 : {
5132 1 : struct spdk_io_channel *_ch = spdk_io_channel_iter_get_channel(i);
5133 1 : struct nvme_bdev_channel *nbdev_ch = spdk_io_channel_get_ctx(_ch);
5134 1 : struct nvme_bdev *nbdev = spdk_io_channel_get_io_device(_ch);
5135 :
5136 1 : nbdev_ch->mp_policy = nbdev->mp_policy;
5137 1 : nbdev_ch->mp_selector = nbdev->mp_selector;
5138 1 : nbdev_ch->rr_min_io = nbdev->rr_min_io;
5139 1 : bdev_nvme_clear_current_io_path(nbdev_ch);
5140 :
5141 1 : spdk_for_each_channel_continue(i, 0);
5142 1 : }
5143 :
5144 : void
5145 3 : bdev_nvme_set_multipath_policy(const char *name, enum bdev_nvme_multipath_policy policy,
5146 : enum bdev_nvme_multipath_selector selector, uint32_t rr_min_io,
5147 : bdev_nvme_set_multipath_policy_cb cb_fn, void *cb_arg)
5148 : {
5149 : struct bdev_nvme_set_multipath_policy_ctx *ctx;
5150 : struct spdk_bdev *bdev;
5151 : struct nvme_bdev *nbdev;
5152 : int rc;
5153 :
5154 3 : assert(cb_fn != NULL);
5155 :
5156 3 : switch (policy) {
5157 1 : case BDEV_NVME_MP_POLICY_ACTIVE_PASSIVE:
5158 1 : break;
5159 2 : case BDEV_NVME_MP_POLICY_ACTIVE_ACTIVE:
5160 : switch (selector) {
5161 1 : case BDEV_NVME_MP_SELECTOR_ROUND_ROBIN:
5162 1 : if (rr_min_io == UINT32_MAX) {
5163 0 : rr_min_io = 1;
5164 1 : } else if (rr_min_io == 0) {
5165 0 : rc = -EINVAL;
5166 0 : goto exit;
5167 : }
5168 1 : break;
5169 1 : case BDEV_NVME_MP_SELECTOR_QUEUE_DEPTH:
5170 1 : break;
5171 0 : default:
5172 0 : rc = -EINVAL;
5173 0 : goto exit;
5174 : }
5175 2 : break;
5176 0 : default:
5177 0 : rc = -EINVAL;
5178 0 : goto exit;
5179 : }
5180 :
5181 3 : ctx = calloc(1, sizeof(*ctx));
5182 3 : if (ctx == NULL) {
5183 0 : SPDK_ERRLOG("Failed to alloc context.\n");
5184 0 : rc = -ENOMEM;
5185 0 : goto exit;
5186 : }
5187 :
5188 3 : ctx->cb_fn = cb_fn;
5189 3 : ctx->cb_arg = cb_arg;
5190 :
5191 3 : rc = spdk_bdev_open_ext(name, false, dummy_bdev_event_cb, NULL, &ctx->desc);
5192 3 : if (rc != 0) {
5193 0 : SPDK_ERRLOG("Failed to open bdev %s.\n", name);
5194 0 : rc = -ENODEV;
5195 0 : goto err_open;
5196 : }
5197 :
5198 3 : bdev = spdk_bdev_desc_get_bdev(ctx->desc);
5199 3 : if (bdev->module != &nvme_if) {
5200 0 : SPDK_ERRLOG("bdev %s is not registered in this module.\n", name);
5201 0 : rc = -ENODEV;
5202 0 : goto err_module;
5203 : }
5204 3 : nbdev = SPDK_CONTAINEROF(bdev, struct nvme_bdev, disk);
5205 :
5206 3 : pthread_mutex_lock(&nbdev->mutex);
5207 3 : nbdev->mp_policy = policy;
5208 3 : nbdev->mp_selector = selector;
5209 3 : nbdev->rr_min_io = rr_min_io;
5210 3 : pthread_mutex_unlock(&nbdev->mutex);
5211 :
5212 3 : spdk_for_each_channel(nbdev,
5213 : _bdev_nvme_set_multipath_policy,
5214 : ctx,
5215 : bdev_nvme_set_multipath_policy_done);
5216 3 : return;
5217 :
5218 0 : err_module:
5219 0 : spdk_bdev_close(ctx->desc);
5220 0 : err_open:
5221 0 : free(ctx);
5222 0 : exit:
5223 0 : cb_fn(cb_arg, rc);
5224 : }
5225 :
5226 : static void
5227 3 : aer_cb(void *arg, const struct spdk_nvme_cpl *cpl)
5228 : {
5229 3 : struct nvme_ctrlr *nvme_ctrlr = arg;
5230 : union spdk_nvme_async_event_completion event;
5231 :
5232 3 : if (spdk_nvme_cpl_is_error(cpl)) {
5233 0 : SPDK_WARNLOG("AER request execute failed\n");
5234 0 : return;
5235 : }
5236 :
5237 3 : event.raw = cpl->cdw0;
5238 3 : if ((event.bits.async_event_type == SPDK_NVME_ASYNC_EVENT_TYPE_NOTICE) &&
5239 3 : (event.bits.async_event_info == SPDK_NVME_ASYNC_EVENT_NS_ATTR_CHANGED)) {
5240 2 : nvme_ctrlr_populate_namespaces(nvme_ctrlr, NULL);
5241 1 : } else if ((event.bits.async_event_type == SPDK_NVME_ASYNC_EVENT_TYPE_NOTICE) &&
5242 1 : (event.bits.async_event_info == SPDK_NVME_ASYNC_EVENT_ANA_CHANGE)) {
5243 1 : nvme_ctrlr_read_ana_log_page(nvme_ctrlr);
5244 : }
5245 : }
5246 :
5247 : static void
5248 51 : free_nvme_async_probe_ctx(struct nvme_async_probe_ctx *ctx)
5249 : {
5250 51 : spdk_keyring_put_key(ctx->drv_opts.tls_psk);
5251 51 : spdk_keyring_put_key(ctx->drv_opts.dhchap_key);
5252 51 : spdk_keyring_put_key(ctx->drv_opts.dhchap_ctrlr_key);
5253 51 : free(ctx);
5254 51 : }
5255 :
5256 : static void
5257 51 : populate_namespaces_cb(struct nvme_async_probe_ctx *ctx, int rc)
5258 : {
5259 51 : if (ctx->cb_fn) {
5260 51 : ctx->cb_fn(ctx->cb_ctx, ctx->reported_bdevs, rc);
5261 : }
5262 :
5263 51 : ctx->namespaces_populated = true;
5264 51 : if (ctx->probe_done) {
5265 : /* The probe was already completed, so we need to free the context
5266 : * here. This can happen for cases like OCSSD, where we need to
5267 : * send additional commands to the SSD after attach.
5268 : */
5269 31 : free_nvme_async_probe_ctx(ctx);
5270 : }
5271 51 : }
5272 :
5273 : static void
5274 59 : nvme_ctrlr_create_done(struct nvme_ctrlr *nvme_ctrlr,
5275 : struct nvme_async_probe_ctx *ctx)
5276 : {
5277 59 : spdk_io_device_register(nvme_ctrlr,
5278 : bdev_nvme_create_ctrlr_channel_cb,
5279 : bdev_nvme_destroy_ctrlr_channel_cb,
5280 : sizeof(struct nvme_ctrlr_channel),
5281 59 : nvme_ctrlr->nbdev_ctrlr->name);
5282 :
5283 59 : nvme_ctrlr_populate_namespaces(nvme_ctrlr, ctx);
5284 59 : }
5285 :
5286 : static void
5287 30 : nvme_ctrlr_init_ana_log_page_done(void *_ctx, const struct spdk_nvme_cpl *cpl)
5288 : {
5289 30 : struct nvme_ctrlr *nvme_ctrlr = _ctx;
5290 30 : struct nvme_async_probe_ctx *ctx = nvme_ctrlr->probe_ctx;
5291 :
5292 30 : nvme_ctrlr->probe_ctx = NULL;
5293 :
5294 30 : if (spdk_nvme_cpl_is_error(cpl)) {
5295 0 : nvme_ctrlr_delete(nvme_ctrlr);
5296 :
5297 0 : if (ctx != NULL) {
5298 0 : ctx->reported_bdevs = 0;
5299 0 : populate_namespaces_cb(ctx, -1);
5300 : }
5301 0 : return;
5302 : }
5303 :
5304 30 : nvme_ctrlr_create_done(nvme_ctrlr, ctx);
5305 : }
5306 :
5307 : static int
5308 30 : nvme_ctrlr_init_ana_log_page(struct nvme_ctrlr *nvme_ctrlr,
5309 : struct nvme_async_probe_ctx *ctx)
5310 : {
5311 30 : struct spdk_nvme_ctrlr *ctrlr = nvme_ctrlr->ctrlr;
5312 : const struct spdk_nvme_ctrlr_data *cdata;
5313 : uint32_t ana_log_page_size;
5314 :
5315 30 : cdata = spdk_nvme_ctrlr_get_data(ctrlr);
5316 :
5317 : /* Set buffer size enough to include maximum number of allowed namespaces. */
5318 30 : ana_log_page_size = sizeof(struct spdk_nvme_ana_page) + cdata->nanagrpid *
5319 30 : sizeof(struct spdk_nvme_ana_group_descriptor) + cdata->mnan *
5320 : sizeof(uint32_t);
5321 :
5322 30 : nvme_ctrlr->ana_log_page = spdk_zmalloc(ana_log_page_size, 64, NULL,
5323 : SPDK_ENV_SOCKET_ID_ANY, SPDK_MALLOC_DMA);
5324 30 : if (nvme_ctrlr->ana_log_page == NULL) {
5325 0 : SPDK_ERRLOG("could not allocate ANA log page buffer\n");
5326 0 : return -ENXIO;
5327 : }
5328 :
5329 : /* Each descriptor in a ANA log page is not ensured to be 8-bytes aligned.
5330 : * Hence copy each descriptor to a temporary area when parsing it.
5331 : *
5332 : * Allocate a buffer whose size is as large as ANA log page buffer because
5333 : * we do not know the size of a descriptor until actually reading it.
5334 : */
5335 30 : nvme_ctrlr->copied_ana_desc = calloc(1, ana_log_page_size);
5336 30 : if (nvme_ctrlr->copied_ana_desc == NULL) {
5337 0 : SPDK_ERRLOG("could not allocate a buffer to parse ANA descriptor\n");
5338 0 : return -ENOMEM;
5339 : }
5340 :
5341 30 : nvme_ctrlr->max_ana_log_page_size = ana_log_page_size;
5342 :
5343 30 : nvme_ctrlr->probe_ctx = ctx;
5344 :
5345 : /* Then, set the read size only to include the current active namespaces. */
5346 30 : ana_log_page_size = nvme_ctrlr_get_ana_log_page_size(nvme_ctrlr);
5347 :
5348 30 : if (ana_log_page_size > nvme_ctrlr->max_ana_log_page_size) {
5349 0 : SPDK_ERRLOG("ANA log page size %" PRIu32 " is larger than allowed %" PRIu32 "\n",
5350 : ana_log_page_size, nvme_ctrlr->max_ana_log_page_size);
5351 0 : return -EINVAL;
5352 : }
5353 :
5354 30 : return spdk_nvme_ctrlr_cmd_get_log_page(ctrlr,
5355 : SPDK_NVME_LOG_ASYMMETRIC_NAMESPACE_ACCESS,
5356 : SPDK_NVME_GLOBAL_NS_TAG,
5357 30 : nvme_ctrlr->ana_log_page,
5358 : ana_log_page_size, 0,
5359 : nvme_ctrlr_init_ana_log_page_done,
5360 : nvme_ctrlr);
5361 : }
5362 :
5363 : /* hostnqn and subnqn were already verified before attaching a controller.
5364 : * Hence check only the multipath capability and cntlid here.
5365 : */
5366 : static bool
5367 16 : bdev_nvme_check_multipath(struct nvme_bdev_ctrlr *nbdev_ctrlr, struct spdk_nvme_ctrlr *ctrlr)
5368 : {
5369 : struct nvme_ctrlr *tmp;
5370 : const struct spdk_nvme_ctrlr_data *cdata, *tmp_cdata;
5371 :
5372 16 : cdata = spdk_nvme_ctrlr_get_data(ctrlr);
5373 :
5374 16 : if (!cdata->cmic.multi_ctrlr) {
5375 0 : SPDK_ERRLOG("Ctrlr%u does not support multipath.\n", cdata->cntlid);
5376 0 : return false;
5377 : }
5378 :
5379 33 : TAILQ_FOREACH(tmp, &nbdev_ctrlr->ctrlrs, tailq) {
5380 18 : tmp_cdata = spdk_nvme_ctrlr_get_data(tmp->ctrlr);
5381 :
5382 18 : if (!tmp_cdata->cmic.multi_ctrlr) {
5383 0 : SPDK_ERRLOG("Ctrlr%u does not support multipath.\n", cdata->cntlid);
5384 0 : return false;
5385 : }
5386 18 : if (cdata->cntlid == tmp_cdata->cntlid) {
5387 1 : SPDK_ERRLOG("cntlid %u are duplicated.\n", tmp_cdata->cntlid);
5388 1 : return false;
5389 : }
5390 : }
5391 :
5392 15 : return true;
5393 : }
5394 :
5395 : static int
5396 60 : nvme_bdev_ctrlr_create(const char *name, struct nvme_ctrlr *nvme_ctrlr)
5397 : {
5398 : struct nvme_bdev_ctrlr *nbdev_ctrlr;
5399 60 : struct spdk_nvme_ctrlr *ctrlr = nvme_ctrlr->ctrlr;
5400 60 : int rc = 0;
5401 :
5402 60 : pthread_mutex_lock(&g_bdev_nvme_mutex);
5403 :
5404 60 : nbdev_ctrlr = nvme_bdev_ctrlr_get_by_name(name);
5405 60 : if (nbdev_ctrlr != NULL) {
5406 16 : if (!bdev_nvme_check_multipath(nbdev_ctrlr, ctrlr)) {
5407 1 : rc = -EINVAL;
5408 1 : goto exit;
5409 : }
5410 : } else {
5411 44 : nbdev_ctrlr = calloc(1, sizeof(*nbdev_ctrlr));
5412 44 : if (nbdev_ctrlr == NULL) {
5413 0 : SPDK_ERRLOG("Failed to allocate nvme_bdev_ctrlr.\n");
5414 0 : rc = -ENOMEM;
5415 0 : goto exit;
5416 : }
5417 44 : nbdev_ctrlr->name = strdup(name);
5418 44 : if (nbdev_ctrlr->name == NULL) {
5419 0 : SPDK_ERRLOG("Failed to allocate name of nvme_bdev_ctrlr.\n");
5420 0 : free(nbdev_ctrlr);
5421 0 : goto exit;
5422 : }
5423 44 : TAILQ_INIT(&nbdev_ctrlr->ctrlrs);
5424 44 : TAILQ_INIT(&nbdev_ctrlr->bdevs);
5425 44 : TAILQ_INSERT_TAIL(&g_nvme_bdev_ctrlrs, nbdev_ctrlr, tailq);
5426 : }
5427 59 : nvme_ctrlr->nbdev_ctrlr = nbdev_ctrlr;
5428 59 : TAILQ_INSERT_TAIL(&nbdev_ctrlr->ctrlrs, nvme_ctrlr, tailq);
5429 60 : exit:
5430 60 : pthread_mutex_unlock(&g_bdev_nvme_mutex);
5431 60 : return rc;
5432 : }
5433 :
5434 : static int
5435 60 : nvme_ctrlr_create(struct spdk_nvme_ctrlr *ctrlr,
5436 : const char *name,
5437 : const struct spdk_nvme_transport_id *trid,
5438 : struct nvme_async_probe_ctx *ctx)
5439 : {
5440 : struct nvme_ctrlr *nvme_ctrlr;
5441 : struct nvme_path_id *path_id;
5442 : const struct spdk_nvme_ctrlr_data *cdata;
5443 : int rc;
5444 :
5445 60 : nvme_ctrlr = calloc(1, sizeof(*nvme_ctrlr));
5446 60 : if (nvme_ctrlr == NULL) {
5447 0 : SPDK_ERRLOG("Failed to allocate device struct\n");
5448 0 : return -ENOMEM;
5449 : }
5450 :
5451 60 : rc = pthread_mutex_init(&nvme_ctrlr->mutex, NULL);
5452 60 : if (rc != 0) {
5453 0 : free(nvme_ctrlr);
5454 0 : return rc;
5455 : }
5456 :
5457 60 : TAILQ_INIT(&nvme_ctrlr->trids);
5458 60 : RB_INIT(&nvme_ctrlr->namespaces);
5459 :
5460 : /* Get another reference to the key, so the first one can be released from probe_ctx */
5461 60 : if (ctx != NULL) {
5462 46 : if (ctx->drv_opts.tls_psk != NULL) {
5463 0 : nvme_ctrlr->psk = spdk_keyring_get_key(
5464 : spdk_key_get_name(ctx->drv_opts.tls_psk));
5465 0 : if (nvme_ctrlr->psk == NULL) {
5466 : /* Could only happen if the key was removed in the meantime */
5467 0 : SPDK_ERRLOG("Couldn't get a reference to the key '%s'\n",
5468 : spdk_key_get_name(ctx->drv_opts.tls_psk));
5469 0 : rc = -ENOKEY;
5470 0 : goto err;
5471 : }
5472 : }
5473 :
5474 46 : if (ctx->drv_opts.dhchap_key != NULL) {
5475 0 : nvme_ctrlr->dhchap_key = spdk_keyring_get_key(
5476 : spdk_key_get_name(ctx->drv_opts.dhchap_key));
5477 0 : if (nvme_ctrlr->dhchap_key == NULL) {
5478 0 : SPDK_ERRLOG("Couldn't get a reference to the key '%s'\n",
5479 : spdk_key_get_name(ctx->drv_opts.dhchap_key));
5480 0 : rc = -ENOKEY;
5481 0 : goto err;
5482 : }
5483 : }
5484 :
5485 46 : if (ctx->drv_opts.dhchap_ctrlr_key != NULL) {
5486 0 : nvme_ctrlr->dhchap_ctrlr_key =
5487 0 : spdk_keyring_get_key(
5488 : spdk_key_get_name(ctx->drv_opts.dhchap_ctrlr_key));
5489 0 : if (nvme_ctrlr->dhchap_ctrlr_key == NULL) {
5490 0 : SPDK_ERRLOG("Couldn't get a reference to the key '%s'\n",
5491 : spdk_key_get_name(ctx->drv_opts.dhchap_ctrlr_key));
5492 0 : rc = -ENOKEY;
5493 0 : goto err;
5494 : }
5495 : }
5496 : }
5497 :
5498 60 : path_id = calloc(1, sizeof(*path_id));
5499 60 : if (path_id == NULL) {
5500 0 : SPDK_ERRLOG("Failed to allocate trid entry pointer\n");
5501 0 : rc = -ENOMEM;
5502 0 : goto err;
5503 : }
5504 :
5505 60 : path_id->trid = *trid;
5506 60 : if (ctx != NULL) {
5507 46 : memcpy(path_id->hostid.hostaddr, ctx->drv_opts.src_addr, sizeof(path_id->hostid.hostaddr));
5508 46 : memcpy(path_id->hostid.hostsvcid, ctx->drv_opts.src_svcid, sizeof(path_id->hostid.hostsvcid));
5509 : }
5510 60 : nvme_ctrlr->active_path_id = path_id;
5511 60 : TAILQ_INSERT_HEAD(&nvme_ctrlr->trids, path_id, link);
5512 :
5513 60 : nvme_ctrlr->thread = spdk_get_thread();
5514 60 : nvme_ctrlr->ctrlr = ctrlr;
5515 60 : nvme_ctrlr->ref = 1;
5516 :
5517 60 : if (spdk_nvme_ctrlr_is_ocssd_supported(ctrlr)) {
5518 0 : SPDK_ERRLOG("OCSSDs are not supported");
5519 0 : rc = -ENOTSUP;
5520 0 : goto err;
5521 : }
5522 :
5523 60 : if (ctx != NULL) {
5524 46 : memcpy(&nvme_ctrlr->opts, &ctx->bdev_opts, sizeof(ctx->bdev_opts));
5525 : } else {
5526 14 : bdev_nvme_get_default_ctrlr_opts(&nvme_ctrlr->opts);
5527 : }
5528 :
5529 60 : nvme_ctrlr->adminq_timer_poller = SPDK_POLLER_REGISTER(bdev_nvme_poll_adminq, nvme_ctrlr,
5530 : g_opts.nvme_adminq_poll_period_us);
5531 :
5532 60 : if (g_opts.timeout_us > 0) {
5533 : /* Register timeout callback. Timeout values for IO vs. admin reqs can be different. */
5534 : /* If timeout_admin_us is 0 (not specified), admin uses same timeout as IO. */
5535 0 : uint64_t adm_timeout_us = (g_opts.timeout_admin_us == 0) ?
5536 0 : g_opts.timeout_us : g_opts.timeout_admin_us;
5537 0 : spdk_nvme_ctrlr_register_timeout_callback(ctrlr, g_opts.timeout_us,
5538 : adm_timeout_us, timeout_cb, nvme_ctrlr);
5539 : }
5540 :
5541 60 : spdk_nvme_ctrlr_register_aer_callback(ctrlr, aer_cb, nvme_ctrlr);
5542 60 : spdk_nvme_ctrlr_set_remove_cb(ctrlr, remove_cb, nvme_ctrlr);
5543 :
5544 60 : if (spdk_nvme_ctrlr_get_flags(ctrlr) &
5545 : SPDK_NVME_CTRLR_SECURITY_SEND_RECV_SUPPORTED) {
5546 0 : nvme_ctrlr->opal_dev = spdk_opal_dev_construct(ctrlr);
5547 : }
5548 :
5549 60 : rc = nvme_bdev_ctrlr_create(name, nvme_ctrlr);
5550 60 : if (rc != 0) {
5551 1 : goto err;
5552 : }
5553 :
5554 59 : cdata = spdk_nvme_ctrlr_get_data(ctrlr);
5555 :
5556 59 : if (cdata->cmic.ana_reporting) {
5557 30 : rc = nvme_ctrlr_init_ana_log_page(nvme_ctrlr, ctx);
5558 30 : if (rc == 0) {
5559 30 : return 0;
5560 : }
5561 : } else {
5562 29 : nvme_ctrlr_create_done(nvme_ctrlr, ctx);
5563 29 : return 0;
5564 : }
5565 :
5566 1 : err:
5567 1 : nvme_ctrlr_delete(nvme_ctrlr);
5568 1 : return rc;
5569 : }
5570 :
5571 : void
5572 56 : bdev_nvme_get_default_ctrlr_opts(struct nvme_ctrlr_opts *opts)
5573 : {
5574 56 : opts->prchk_flags = 0;
5575 56 : opts->ctrlr_loss_timeout_sec = g_opts.ctrlr_loss_timeout_sec;
5576 56 : opts->reconnect_delay_sec = g_opts.reconnect_delay_sec;
5577 56 : opts->fast_io_fail_timeout_sec = g_opts.fast_io_fail_timeout_sec;
5578 56 : }
5579 :
5580 : static void
5581 0 : attach_cb(void *cb_ctx, const struct spdk_nvme_transport_id *trid,
5582 : struct spdk_nvme_ctrlr *ctrlr, const struct spdk_nvme_ctrlr_opts *drv_opts)
5583 : {
5584 : char *name;
5585 :
5586 0 : name = spdk_sprintf_alloc("HotInNvme%d", g_hot_insert_nvme_controller_index++);
5587 0 : if (!name) {
5588 0 : SPDK_ERRLOG("Failed to assign name to NVMe device\n");
5589 0 : return;
5590 : }
5591 :
5592 0 : if (nvme_ctrlr_create(ctrlr, name, trid, NULL) == 0) {
5593 0 : SPDK_DEBUGLOG(bdev_nvme, "Attached to %s (%s)\n", trid->traddr, name);
5594 : } else {
5595 0 : SPDK_ERRLOG("Failed to attach to %s (%s)\n", trid->traddr, name);
5596 : }
5597 :
5598 0 : free(name);
5599 : }
5600 :
5601 : static void
5602 59 : _nvme_ctrlr_destruct(void *ctx)
5603 : {
5604 59 : struct nvme_ctrlr *nvme_ctrlr = ctx;
5605 :
5606 59 : nvme_ctrlr_depopulate_namespaces(nvme_ctrlr);
5607 59 : nvme_ctrlr_release(nvme_ctrlr);
5608 59 : }
5609 :
5610 : static int
5611 56 : bdev_nvme_delete_ctrlr_unsafe(struct nvme_ctrlr *nvme_ctrlr, bool hotplug)
5612 : {
5613 : struct nvme_probe_skip_entry *entry;
5614 :
5615 : /* The controller's destruction was already started */
5616 56 : if (nvme_ctrlr->destruct) {
5617 0 : return -EALREADY;
5618 : }
5619 :
5620 56 : if (!hotplug &&
5621 56 : nvme_ctrlr->active_path_id->trid.trtype == SPDK_NVME_TRANSPORT_PCIE) {
5622 0 : entry = calloc(1, sizeof(*entry));
5623 0 : if (!entry) {
5624 0 : return -ENOMEM;
5625 : }
5626 0 : entry->trid = nvme_ctrlr->active_path_id->trid;
5627 0 : TAILQ_INSERT_TAIL(&g_skipped_nvme_ctrlrs, entry, tailq);
5628 : }
5629 :
5630 56 : nvme_ctrlr->destruct = true;
5631 56 : return 0;
5632 : }
5633 :
5634 : static int
5635 2 : bdev_nvme_delete_ctrlr(struct nvme_ctrlr *nvme_ctrlr, bool hotplug)
5636 : {
5637 : int rc;
5638 :
5639 2 : pthread_mutex_lock(&nvme_ctrlr->mutex);
5640 2 : rc = bdev_nvme_delete_ctrlr_unsafe(nvme_ctrlr, hotplug);
5641 2 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
5642 :
5643 2 : if (rc == 0) {
5644 2 : _nvme_ctrlr_destruct(nvme_ctrlr);
5645 0 : } else if (rc == -EALREADY) {
5646 0 : rc = 0;
5647 : }
5648 :
5649 2 : return rc;
5650 : }
5651 :
5652 : static void
5653 0 : remove_cb(void *cb_ctx, struct spdk_nvme_ctrlr *ctrlr)
5654 : {
5655 0 : struct nvme_ctrlr *nvme_ctrlr = cb_ctx;
5656 :
5657 0 : bdev_nvme_delete_ctrlr(nvme_ctrlr, true);
5658 0 : }
5659 :
5660 : static int
5661 0 : bdev_nvme_hotplug_probe(void *arg)
5662 : {
5663 0 : if (g_hotplug_probe_ctx == NULL) {
5664 0 : spdk_poller_unregister(&g_hotplug_probe_poller);
5665 0 : return SPDK_POLLER_IDLE;
5666 : }
5667 :
5668 0 : if (spdk_nvme_probe_poll_async(g_hotplug_probe_ctx) != -EAGAIN) {
5669 0 : g_hotplug_probe_ctx = NULL;
5670 0 : spdk_poller_unregister(&g_hotplug_probe_poller);
5671 : }
5672 :
5673 0 : return SPDK_POLLER_BUSY;
5674 : }
5675 :
5676 : static int
5677 0 : bdev_nvme_hotplug(void *arg)
5678 : {
5679 0 : struct spdk_nvme_transport_id trid_pcie;
5680 :
5681 0 : if (g_hotplug_probe_ctx) {
5682 0 : return SPDK_POLLER_BUSY;
5683 : }
5684 :
5685 0 : memset(&trid_pcie, 0, sizeof(trid_pcie));
5686 0 : spdk_nvme_trid_populate_transport(&trid_pcie, SPDK_NVME_TRANSPORT_PCIE);
5687 :
5688 0 : g_hotplug_probe_ctx = spdk_nvme_probe_async(&trid_pcie, NULL,
5689 : hotplug_probe_cb, attach_cb, NULL);
5690 :
5691 0 : if (g_hotplug_probe_ctx) {
5692 0 : assert(g_hotplug_probe_poller == NULL);
5693 0 : g_hotplug_probe_poller = SPDK_POLLER_REGISTER(bdev_nvme_hotplug_probe, NULL, 1000);
5694 : }
5695 :
5696 0 : return SPDK_POLLER_BUSY;
5697 : }
5698 :
5699 : void
5700 0 : bdev_nvme_get_opts(struct spdk_bdev_nvme_opts *opts)
5701 : {
5702 0 : *opts = g_opts;
5703 0 : }
5704 :
5705 : static bool bdev_nvme_check_io_error_resiliency_params(int32_t ctrlr_loss_timeout_sec,
5706 : uint32_t reconnect_delay_sec,
5707 : uint32_t fast_io_fail_timeout_sec);
5708 :
5709 : static int
5710 0 : bdev_nvme_validate_opts(const struct spdk_bdev_nvme_opts *opts)
5711 : {
5712 0 : if ((opts->timeout_us == 0) && (opts->timeout_admin_us != 0)) {
5713 : /* Can't set timeout_admin_us without also setting timeout_us */
5714 0 : SPDK_WARNLOG("Invalid options: Can't have (timeout_us == 0) with (timeout_admin_us > 0)\n");
5715 0 : return -EINVAL;
5716 : }
5717 :
5718 0 : if (opts->bdev_retry_count < -1) {
5719 0 : SPDK_WARNLOG("Invalid option: bdev_retry_count can't be less than -1.\n");
5720 0 : return -EINVAL;
5721 : }
5722 :
5723 0 : if (!bdev_nvme_check_io_error_resiliency_params(opts->ctrlr_loss_timeout_sec,
5724 : opts->reconnect_delay_sec,
5725 : opts->fast_io_fail_timeout_sec)) {
5726 0 : return -EINVAL;
5727 : }
5728 :
5729 0 : return 0;
5730 : }
5731 :
5732 : int
5733 0 : bdev_nvme_set_opts(const struct spdk_bdev_nvme_opts *opts)
5734 : {
5735 : int ret;
5736 :
5737 0 : ret = bdev_nvme_validate_opts(opts);
5738 0 : if (ret) {
5739 0 : SPDK_WARNLOG("Failed to set nvme opts.\n");
5740 0 : return ret;
5741 : }
5742 :
5743 0 : if (g_bdev_nvme_init_thread != NULL) {
5744 0 : if (!TAILQ_EMPTY(&g_nvme_bdev_ctrlrs)) {
5745 0 : return -EPERM;
5746 : }
5747 : }
5748 :
5749 0 : if (opts->rdma_srq_size != 0 ||
5750 0 : opts->rdma_max_cq_size != 0 ||
5751 0 : opts->rdma_cm_event_timeout_ms != 0) {
5752 0 : struct spdk_nvme_transport_opts drv_opts;
5753 :
5754 0 : spdk_nvme_transport_get_opts(&drv_opts, sizeof(drv_opts));
5755 0 : if (opts->rdma_srq_size != 0) {
5756 0 : drv_opts.rdma_srq_size = opts->rdma_srq_size;
5757 : }
5758 0 : if (opts->rdma_max_cq_size != 0) {
5759 0 : drv_opts.rdma_max_cq_size = opts->rdma_max_cq_size;
5760 : }
5761 0 : if (opts->rdma_cm_event_timeout_ms != 0) {
5762 0 : drv_opts.rdma_cm_event_timeout_ms = opts->rdma_cm_event_timeout_ms;
5763 : }
5764 :
5765 0 : ret = spdk_nvme_transport_set_opts(&drv_opts, sizeof(drv_opts));
5766 0 : if (ret) {
5767 0 : SPDK_ERRLOG("Failed to set NVMe transport opts.\n");
5768 0 : return ret;
5769 : }
5770 : }
5771 :
5772 0 : g_opts = *opts;
5773 :
5774 0 : return 0;
5775 : }
5776 :
5777 : struct set_nvme_hotplug_ctx {
5778 : uint64_t period_us;
5779 : bool enabled;
5780 : spdk_msg_fn fn;
5781 : void *fn_ctx;
5782 : };
5783 :
5784 : static void
5785 0 : set_nvme_hotplug_period_cb(void *_ctx)
5786 : {
5787 0 : struct set_nvme_hotplug_ctx *ctx = _ctx;
5788 :
5789 0 : spdk_poller_unregister(&g_hotplug_poller);
5790 0 : if (ctx->enabled) {
5791 0 : g_hotplug_poller = SPDK_POLLER_REGISTER(bdev_nvme_hotplug, NULL, ctx->period_us);
5792 : }
5793 :
5794 0 : g_nvme_hotplug_poll_period_us = ctx->period_us;
5795 0 : g_nvme_hotplug_enabled = ctx->enabled;
5796 0 : if (ctx->fn) {
5797 0 : ctx->fn(ctx->fn_ctx);
5798 : }
5799 :
5800 0 : free(ctx);
5801 0 : }
5802 :
5803 : int
5804 0 : bdev_nvme_set_hotplug(bool enabled, uint64_t period_us, spdk_msg_fn cb, void *cb_ctx)
5805 : {
5806 : struct set_nvme_hotplug_ctx *ctx;
5807 :
5808 0 : if (enabled == true && !spdk_process_is_primary()) {
5809 0 : return -EPERM;
5810 : }
5811 :
5812 0 : ctx = calloc(1, sizeof(*ctx));
5813 0 : if (ctx == NULL) {
5814 0 : return -ENOMEM;
5815 : }
5816 :
5817 0 : period_us = period_us == 0 ? NVME_HOTPLUG_POLL_PERIOD_DEFAULT : period_us;
5818 0 : ctx->period_us = spdk_min(period_us, NVME_HOTPLUG_POLL_PERIOD_MAX);
5819 0 : ctx->enabled = enabled;
5820 0 : ctx->fn = cb;
5821 0 : ctx->fn_ctx = cb_ctx;
5822 :
5823 0 : spdk_thread_send_msg(g_bdev_nvme_init_thread, set_nvme_hotplug_period_cb, ctx);
5824 0 : return 0;
5825 : }
5826 :
5827 : static void
5828 45 : nvme_ctrlr_populate_namespaces_done(struct nvme_ctrlr *nvme_ctrlr,
5829 : struct nvme_async_probe_ctx *ctx)
5830 : {
5831 : struct nvme_ns *nvme_ns;
5832 : struct nvme_bdev *nvme_bdev;
5833 : size_t j;
5834 :
5835 45 : assert(nvme_ctrlr != NULL);
5836 :
5837 45 : if (ctx->names == NULL) {
5838 0 : ctx->reported_bdevs = 0;
5839 0 : populate_namespaces_cb(ctx, 0);
5840 0 : return;
5841 : }
5842 :
5843 : /*
5844 : * Report the new bdevs that were created in this call.
5845 : * There can be more than one bdev per NVMe controller.
5846 : */
5847 45 : j = 0;
5848 45 : nvme_ns = nvme_ctrlr_get_first_active_ns(nvme_ctrlr);
5849 92 : while (nvme_ns != NULL) {
5850 47 : nvme_bdev = nvme_ns->bdev;
5851 47 : if (j < ctx->max_bdevs) {
5852 47 : ctx->names[j] = nvme_bdev->disk.name;
5853 47 : j++;
5854 : } else {
5855 0 : SPDK_ERRLOG("Maximum number of namespaces supported per NVMe controller is %du. Unable to return all names of created bdevs\n",
5856 : ctx->max_bdevs);
5857 0 : ctx->reported_bdevs = 0;
5858 0 : populate_namespaces_cb(ctx, -ERANGE);
5859 0 : return;
5860 : }
5861 :
5862 47 : nvme_ns = nvme_ctrlr_get_next_active_ns(nvme_ctrlr, nvme_ns);
5863 : }
5864 :
5865 45 : ctx->reported_bdevs = j;
5866 45 : populate_namespaces_cb(ctx, 0);
5867 : }
5868 :
5869 : static int
5870 9 : bdev_nvme_check_secondary_trid(struct nvme_ctrlr *nvme_ctrlr,
5871 : struct spdk_nvme_ctrlr *new_ctrlr,
5872 : struct spdk_nvme_transport_id *trid)
5873 : {
5874 : struct nvme_path_id *tmp_trid;
5875 :
5876 9 : if (trid->trtype == SPDK_NVME_TRANSPORT_PCIE) {
5877 0 : SPDK_ERRLOG("PCIe failover is not supported.\n");
5878 0 : return -ENOTSUP;
5879 : }
5880 :
5881 : /* Currently we only support failover to the same transport type. */
5882 9 : if (nvme_ctrlr->active_path_id->trid.trtype != trid->trtype) {
5883 0 : SPDK_WARNLOG("Failover from trtype: %s to a different trtype: %s is not supported currently\n",
5884 : spdk_nvme_transport_id_trtype_str(nvme_ctrlr->active_path_id->trid.trtype),
5885 : spdk_nvme_transport_id_trtype_str(trid->trtype));
5886 0 : return -EINVAL;
5887 : }
5888 :
5889 :
5890 : /* Currently we only support failover to the same NQN. */
5891 9 : if (strncmp(trid->subnqn, nvme_ctrlr->active_path_id->trid.subnqn, SPDK_NVMF_NQN_MAX_LEN)) {
5892 0 : SPDK_WARNLOG("Failover from subnqn: %s to a different subnqn: %s is not supported currently\n",
5893 : nvme_ctrlr->active_path_id->trid.subnqn, trid->subnqn);
5894 0 : return -EINVAL;
5895 : }
5896 :
5897 : /* Skip all the other checks if we've already registered this path. */
5898 21 : TAILQ_FOREACH(tmp_trid, &nvme_ctrlr->trids, link) {
5899 12 : if (!spdk_nvme_transport_id_compare(&tmp_trid->trid, trid)) {
5900 0 : SPDK_WARNLOG("This path (traddr: %s subnqn: %s) is already registered\n", trid->traddr,
5901 : trid->subnqn);
5902 0 : return -EALREADY;
5903 : }
5904 : }
5905 :
5906 9 : return 0;
5907 : }
5908 :
5909 : static int
5910 9 : bdev_nvme_check_secondary_namespace(struct nvme_ctrlr *nvme_ctrlr,
5911 : struct spdk_nvme_ctrlr *new_ctrlr)
5912 : {
5913 : struct nvme_ns *nvme_ns;
5914 : struct spdk_nvme_ns *new_ns;
5915 :
5916 9 : nvme_ns = nvme_ctrlr_get_first_active_ns(nvme_ctrlr);
5917 9 : while (nvme_ns != NULL) {
5918 0 : new_ns = spdk_nvme_ctrlr_get_ns(new_ctrlr, nvme_ns->id);
5919 0 : assert(new_ns != NULL);
5920 :
5921 0 : if (!bdev_nvme_compare_ns(nvme_ns->ns, new_ns)) {
5922 0 : return -EINVAL;
5923 : }
5924 :
5925 0 : nvme_ns = nvme_ctrlr_get_next_active_ns(nvme_ctrlr, nvme_ns);
5926 : }
5927 :
5928 9 : return 0;
5929 : }
5930 :
5931 : static int
5932 9 : _bdev_nvme_add_secondary_trid(struct nvme_ctrlr *nvme_ctrlr,
5933 : struct spdk_nvme_transport_id *trid)
5934 : {
5935 : struct nvme_path_id *active_id, *new_trid, *tmp_trid;
5936 :
5937 9 : new_trid = calloc(1, sizeof(*new_trid));
5938 9 : if (new_trid == NULL) {
5939 0 : return -ENOMEM;
5940 : }
5941 9 : new_trid->trid = *trid;
5942 :
5943 9 : active_id = nvme_ctrlr->active_path_id;
5944 9 : assert(active_id != NULL);
5945 9 : assert(active_id == TAILQ_FIRST(&nvme_ctrlr->trids));
5946 :
5947 : /* Skip the active trid not to replace it until it is failed. */
5948 9 : tmp_trid = TAILQ_NEXT(active_id, link);
5949 9 : if (tmp_trid == NULL) {
5950 6 : goto add_tail;
5951 : }
5952 :
5953 : /* It means the trid is faled if its last failed time is non-zero.
5954 : * Insert the new alternate trid before any failed trid.
5955 : */
5956 5 : TAILQ_FOREACH_FROM(tmp_trid, &nvme_ctrlr->trids, link) {
5957 3 : if (tmp_trid->last_failed_tsc != 0) {
5958 1 : TAILQ_INSERT_BEFORE(tmp_trid, new_trid, link);
5959 1 : return 0;
5960 : }
5961 : }
5962 :
5963 2 : add_tail:
5964 8 : TAILQ_INSERT_TAIL(&nvme_ctrlr->trids, new_trid, link);
5965 8 : return 0;
5966 : }
5967 :
5968 : /* This is the case that a secondary path is added to an existing
5969 : * nvme_ctrlr for failover. After checking if it can access the same
5970 : * namespaces as the primary path, it is disconnected until failover occurs.
5971 : */
5972 : static int
5973 9 : bdev_nvme_add_secondary_trid(struct nvme_ctrlr *nvme_ctrlr,
5974 : struct spdk_nvme_ctrlr *new_ctrlr,
5975 : struct spdk_nvme_transport_id *trid)
5976 : {
5977 : int rc;
5978 :
5979 9 : assert(nvme_ctrlr != NULL);
5980 :
5981 9 : pthread_mutex_lock(&nvme_ctrlr->mutex);
5982 :
5983 9 : rc = bdev_nvme_check_secondary_trid(nvme_ctrlr, new_ctrlr, trid);
5984 9 : if (rc != 0) {
5985 0 : goto exit;
5986 : }
5987 :
5988 9 : rc = bdev_nvme_check_secondary_namespace(nvme_ctrlr, new_ctrlr);
5989 9 : if (rc != 0) {
5990 0 : goto exit;
5991 : }
5992 :
5993 9 : rc = _bdev_nvme_add_secondary_trid(nvme_ctrlr, trid);
5994 :
5995 9 : exit:
5996 9 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
5997 :
5998 9 : spdk_nvme_detach(new_ctrlr);
5999 :
6000 9 : return rc;
6001 : }
6002 :
6003 : static void
6004 46 : connect_attach_cb(void *cb_ctx, const struct spdk_nvme_transport_id *trid,
6005 : struct spdk_nvme_ctrlr *ctrlr, const struct spdk_nvme_ctrlr_opts *opts)
6006 : {
6007 46 : struct spdk_nvme_ctrlr_opts *user_opts = cb_ctx;
6008 : struct nvme_async_probe_ctx *ctx;
6009 : int rc;
6010 :
6011 46 : ctx = SPDK_CONTAINEROF(user_opts, struct nvme_async_probe_ctx, drv_opts);
6012 46 : ctx->ctrlr_attached = true;
6013 :
6014 46 : rc = nvme_ctrlr_create(ctrlr, ctx->base_name, &ctx->trid, ctx);
6015 46 : if (rc != 0) {
6016 1 : ctx->reported_bdevs = 0;
6017 1 : populate_namespaces_cb(ctx, rc);
6018 : }
6019 46 : }
6020 :
6021 : static void
6022 4 : connect_set_failover_cb(void *cb_ctx, const struct spdk_nvme_transport_id *trid,
6023 : struct spdk_nvme_ctrlr *ctrlr,
6024 : const struct spdk_nvme_ctrlr_opts *opts)
6025 : {
6026 4 : struct spdk_nvme_ctrlr_opts *user_opts = cb_ctx;
6027 : struct nvme_ctrlr *nvme_ctrlr;
6028 : struct nvme_async_probe_ctx *ctx;
6029 : int rc;
6030 :
6031 4 : ctx = SPDK_CONTAINEROF(user_opts, struct nvme_async_probe_ctx, drv_opts);
6032 4 : ctx->ctrlr_attached = true;
6033 :
6034 4 : nvme_ctrlr = nvme_ctrlr_get_by_name(ctx->base_name);
6035 4 : if (nvme_ctrlr) {
6036 4 : rc = bdev_nvme_add_secondary_trid(nvme_ctrlr, ctrlr, &ctx->trid);
6037 : } else {
6038 0 : rc = -ENODEV;
6039 : }
6040 :
6041 4 : ctx->reported_bdevs = 0;
6042 4 : populate_namespaces_cb(ctx, rc);
6043 4 : }
6044 :
6045 : static int
6046 51 : bdev_nvme_async_poll(void *arg)
6047 : {
6048 51 : struct nvme_async_probe_ctx *ctx = arg;
6049 : int rc;
6050 :
6051 51 : rc = spdk_nvme_probe_poll_async(ctx->probe_ctx);
6052 51 : if (spdk_unlikely(rc != -EAGAIN)) {
6053 51 : ctx->probe_done = true;
6054 51 : spdk_poller_unregister(&ctx->poller);
6055 51 : if (!ctx->ctrlr_attached) {
6056 : /* The probe is done, but no controller was attached.
6057 : * That means we had a failure, so report -EIO back to
6058 : * the caller (usually the RPC). populate_namespaces_cb()
6059 : * will take care of freeing the nvme_async_probe_ctx.
6060 : */
6061 1 : ctx->reported_bdevs = 0;
6062 1 : populate_namespaces_cb(ctx, -EIO);
6063 50 : } else if (ctx->namespaces_populated) {
6064 : /* The namespaces for the attached controller were all
6065 : * populated and the response was already sent to the
6066 : * caller (usually the RPC). So free the context here.
6067 : */
6068 20 : free_nvme_async_probe_ctx(ctx);
6069 : }
6070 : }
6071 :
6072 51 : return SPDK_POLLER_BUSY;
6073 : }
6074 :
6075 : static bool
6076 28 : bdev_nvme_check_io_error_resiliency_params(int32_t ctrlr_loss_timeout_sec,
6077 : uint32_t reconnect_delay_sec,
6078 : uint32_t fast_io_fail_timeout_sec)
6079 : {
6080 28 : if (ctrlr_loss_timeout_sec < -1) {
6081 1 : SPDK_ERRLOG("ctrlr_loss_timeout_sec can't be less than -1.\n");
6082 1 : return false;
6083 27 : } else if (ctrlr_loss_timeout_sec == -1) {
6084 13 : if (reconnect_delay_sec == 0) {
6085 1 : SPDK_ERRLOG("reconnect_delay_sec can't be 0 if ctrlr_loss_timeout_sec is not 0.\n");
6086 1 : return false;
6087 12 : } else if (fast_io_fail_timeout_sec != 0 &&
6088 : fast_io_fail_timeout_sec < reconnect_delay_sec) {
6089 1 : SPDK_ERRLOG("reconnect_delay_sec can't be more than fast_io-fail_timeout_sec.\n");
6090 1 : return false;
6091 : }
6092 14 : } else if (ctrlr_loss_timeout_sec != 0) {
6093 11 : if (reconnect_delay_sec == 0) {
6094 1 : SPDK_ERRLOG("reconnect_delay_sec can't be 0 if ctrlr_loss_timeout_sec is not 0.\n");
6095 1 : return false;
6096 10 : } else if (reconnect_delay_sec > (uint32_t)ctrlr_loss_timeout_sec) {
6097 1 : SPDK_ERRLOG("reconnect_delay_sec can't be more than ctrlr_loss_timeout_sec.\n");
6098 1 : return false;
6099 9 : } else if (fast_io_fail_timeout_sec != 0) {
6100 6 : if (fast_io_fail_timeout_sec < reconnect_delay_sec) {
6101 1 : SPDK_ERRLOG("reconnect_delay_sec can't be more than fast_io_fail_timeout_sec.\n");
6102 1 : return false;
6103 5 : } else if (fast_io_fail_timeout_sec > (uint32_t)ctrlr_loss_timeout_sec) {
6104 1 : SPDK_ERRLOG("fast_io_fail_timeout_sec can't be more than ctrlr_loss_timeout_sec.\n");
6105 1 : return false;
6106 : }
6107 : }
6108 3 : } else if (reconnect_delay_sec != 0 || fast_io_fail_timeout_sec != 0) {
6109 2 : SPDK_ERRLOG("Both reconnect_delay_sec and fast_io_fail_timeout_sec must be 0 if ctrlr_loss_timeout_sec is 0.\n");
6110 2 : return false;
6111 : }
6112 :
6113 19 : return true;
6114 : }
6115 :
6116 : static int
6117 0 : bdev_nvme_load_psk(const char *fname, char *buf, size_t bufsz)
6118 : {
6119 : FILE *psk_file;
6120 0 : struct stat statbuf;
6121 : int rc;
6122 : #define TCP_PSK_INVALID_PERMISSIONS 0177
6123 :
6124 0 : if (stat(fname, &statbuf) != 0) {
6125 0 : SPDK_ERRLOG("Could not read permissions for PSK file\n");
6126 0 : return -EACCES;
6127 : }
6128 :
6129 0 : if ((statbuf.st_mode & TCP_PSK_INVALID_PERMISSIONS) != 0) {
6130 0 : SPDK_ERRLOG("Incorrect permissions for PSK file\n");
6131 0 : return -EPERM;
6132 : }
6133 0 : if ((size_t)statbuf.st_size >= bufsz) {
6134 0 : SPDK_ERRLOG("Invalid PSK: too long\n");
6135 0 : return -EINVAL;
6136 : }
6137 0 : psk_file = fopen(fname, "r");
6138 0 : if (psk_file == NULL) {
6139 0 : SPDK_ERRLOG("Could not open PSK file\n");
6140 0 : return -EINVAL;
6141 : }
6142 :
6143 0 : memset(buf, 0, bufsz);
6144 0 : rc = fread(buf, 1, statbuf.st_size, psk_file);
6145 0 : if (rc != statbuf.st_size) {
6146 0 : SPDK_ERRLOG("Failed to read PSK\n");
6147 0 : fclose(psk_file);
6148 0 : return -EINVAL;
6149 : }
6150 :
6151 0 : fclose(psk_file);
6152 0 : return 0;
6153 : }
6154 :
6155 : int
6156 51 : bdev_nvme_create(struct spdk_nvme_transport_id *trid,
6157 : const char *base_name,
6158 : const char **names,
6159 : uint32_t count,
6160 : spdk_bdev_create_nvme_fn cb_fn,
6161 : void *cb_ctx,
6162 : struct spdk_nvme_ctrlr_opts *drv_opts,
6163 : struct nvme_ctrlr_opts *bdev_opts,
6164 : bool multipath)
6165 : {
6166 : struct nvme_probe_skip_entry *entry, *tmp;
6167 : struct nvme_async_probe_ctx *ctx;
6168 : spdk_nvme_attach_cb attach_cb;
6169 : int rc, len;
6170 :
6171 : /* TODO expand this check to include both the host and target TRIDs.
6172 : * Only if both are the same should we fail.
6173 : */
6174 51 : if (nvme_ctrlr_get(trid, drv_opts->hostnqn) != NULL) {
6175 0 : SPDK_ERRLOG("A controller with the provided trid (traddr: %s, hostnqn: %s) "
6176 : "already exists.\n", trid->traddr, drv_opts->hostnqn);
6177 0 : return -EEXIST;
6178 : }
6179 :
6180 51 : len = strnlen(base_name, SPDK_CONTROLLER_NAME_MAX);
6181 :
6182 51 : if (len == 0 || len == SPDK_CONTROLLER_NAME_MAX) {
6183 0 : SPDK_ERRLOG("controller name must be between 1 and %d characters\n", SPDK_CONTROLLER_NAME_MAX - 1);
6184 0 : return -EINVAL;
6185 : }
6186 :
6187 51 : if (bdev_opts != NULL &&
6188 9 : !bdev_nvme_check_io_error_resiliency_params(bdev_opts->ctrlr_loss_timeout_sec,
6189 : bdev_opts->reconnect_delay_sec,
6190 : bdev_opts->fast_io_fail_timeout_sec)) {
6191 0 : return -EINVAL;
6192 : }
6193 :
6194 51 : ctx = calloc(1, sizeof(*ctx));
6195 51 : if (!ctx) {
6196 0 : return -ENOMEM;
6197 : }
6198 51 : ctx->base_name = base_name;
6199 51 : ctx->names = names;
6200 51 : ctx->max_bdevs = count;
6201 51 : ctx->cb_fn = cb_fn;
6202 51 : ctx->cb_ctx = cb_ctx;
6203 51 : ctx->trid = *trid;
6204 :
6205 51 : if (bdev_opts) {
6206 9 : memcpy(&ctx->bdev_opts, bdev_opts, sizeof(*bdev_opts));
6207 : } else {
6208 42 : bdev_nvme_get_default_ctrlr_opts(&ctx->bdev_opts);
6209 : }
6210 :
6211 51 : if (trid->trtype == SPDK_NVME_TRANSPORT_PCIE) {
6212 0 : TAILQ_FOREACH_SAFE(entry, &g_skipped_nvme_ctrlrs, tailq, tmp) {
6213 0 : if (spdk_nvme_transport_id_compare(trid, &entry->trid) == 0) {
6214 0 : TAILQ_REMOVE(&g_skipped_nvme_ctrlrs, entry, tailq);
6215 0 : free(entry);
6216 0 : break;
6217 : }
6218 : }
6219 : }
6220 :
6221 51 : memcpy(&ctx->drv_opts, drv_opts, sizeof(*drv_opts));
6222 51 : ctx->drv_opts.transport_retry_count = g_opts.transport_retry_count;
6223 51 : ctx->drv_opts.transport_ack_timeout = g_opts.transport_ack_timeout;
6224 51 : ctx->drv_opts.keep_alive_timeout_ms = g_opts.keep_alive_timeout_ms;
6225 51 : ctx->drv_opts.disable_read_ana_log_page = true;
6226 51 : ctx->drv_opts.transport_tos = g_opts.transport_tos;
6227 :
6228 51 : if (ctx->bdev_opts.psk[0] != '\0') {
6229 : /* Try to use the keyring first */
6230 0 : ctx->drv_opts.tls_psk = spdk_keyring_get_key(ctx->bdev_opts.psk);
6231 0 : if (ctx->drv_opts.tls_psk == NULL) {
6232 0 : rc = bdev_nvme_load_psk(ctx->bdev_opts.psk,
6233 0 : ctx->drv_opts.psk, sizeof(ctx->drv_opts.psk));
6234 0 : if (rc != 0) {
6235 0 : SPDK_ERRLOG("Could not load PSK from %s\n", ctx->bdev_opts.psk);
6236 0 : free_nvme_async_probe_ctx(ctx);
6237 0 : return rc;
6238 : }
6239 : }
6240 : }
6241 :
6242 51 : if (ctx->bdev_opts.dhchap_key != NULL) {
6243 0 : ctx->drv_opts.dhchap_key = spdk_keyring_get_key(ctx->bdev_opts.dhchap_key);
6244 0 : if (ctx->drv_opts.dhchap_key == NULL) {
6245 0 : SPDK_ERRLOG("Could not load DH-HMAC-CHAP key: %s\n",
6246 : ctx->bdev_opts.dhchap_key);
6247 0 : free_nvme_async_probe_ctx(ctx);
6248 0 : return -ENOKEY;
6249 : }
6250 :
6251 0 : ctx->drv_opts.dhchap_digests = g_opts.dhchap_digests;
6252 0 : ctx->drv_opts.dhchap_dhgroups = g_opts.dhchap_dhgroups;
6253 : }
6254 51 : if (ctx->bdev_opts.dhchap_ctrlr_key != NULL) {
6255 0 : ctx->drv_opts.dhchap_ctrlr_key =
6256 0 : spdk_keyring_get_key(ctx->bdev_opts.dhchap_ctrlr_key);
6257 0 : if (ctx->drv_opts.dhchap_ctrlr_key == NULL) {
6258 0 : SPDK_ERRLOG("Could not load DH-HMAC-CHAP controller key: %s\n",
6259 : ctx->bdev_opts.dhchap_ctrlr_key);
6260 0 : free_nvme_async_probe_ctx(ctx);
6261 0 : return -ENOKEY;
6262 : }
6263 : }
6264 :
6265 51 : if (nvme_bdev_ctrlr_get_by_name(base_name) == NULL || multipath) {
6266 47 : attach_cb = connect_attach_cb;
6267 : } else {
6268 4 : attach_cb = connect_set_failover_cb;
6269 : }
6270 :
6271 51 : ctx->probe_ctx = spdk_nvme_connect_async(trid, &ctx->drv_opts, attach_cb);
6272 51 : if (ctx->probe_ctx == NULL) {
6273 0 : SPDK_ERRLOG("No controller was found with provided trid (traddr: %s)\n", trid->traddr);
6274 0 : free_nvme_async_probe_ctx(ctx);
6275 0 : return -ENODEV;
6276 : }
6277 51 : ctx->poller = SPDK_POLLER_REGISTER(bdev_nvme_async_poll, ctx, 1000);
6278 :
6279 51 : return 0;
6280 : }
6281 :
6282 : struct bdev_nvme_delete_ctx {
6283 : char *name;
6284 : struct nvme_path_id path_id;
6285 : bdev_nvme_delete_done_fn delete_done;
6286 : void *delete_done_ctx;
6287 : uint64_t timeout_ticks;
6288 : struct spdk_poller *poller;
6289 : };
6290 :
6291 : static void
6292 2 : free_bdev_nvme_delete_ctx(struct bdev_nvme_delete_ctx *ctx)
6293 : {
6294 2 : if (ctx != NULL) {
6295 1 : free(ctx->name);
6296 1 : free(ctx);
6297 : }
6298 2 : }
6299 :
6300 : static bool
6301 74 : nvme_path_id_compare(struct nvme_path_id *p, const struct nvme_path_id *path_id)
6302 : {
6303 74 : if (path_id->trid.trtype != 0) {
6304 21 : if (path_id->trid.trtype == SPDK_NVME_TRANSPORT_CUSTOM) {
6305 0 : if (strcasecmp(path_id->trid.trstring, p->trid.trstring) != 0) {
6306 0 : return false;
6307 : }
6308 : } else {
6309 21 : if (path_id->trid.trtype != p->trid.trtype) {
6310 0 : return false;
6311 : }
6312 : }
6313 : }
6314 :
6315 74 : if (!spdk_mem_all_zero(path_id->trid.traddr, sizeof(path_id->trid.traddr))) {
6316 21 : if (strcasecmp(path_id->trid.traddr, p->trid.traddr) != 0) {
6317 11 : return false;
6318 : }
6319 : }
6320 :
6321 63 : if (path_id->trid.adrfam != 0) {
6322 0 : if (path_id->trid.adrfam != p->trid.adrfam) {
6323 0 : return false;
6324 : }
6325 : }
6326 :
6327 63 : if (!spdk_mem_all_zero(path_id->trid.trsvcid, sizeof(path_id->trid.trsvcid))) {
6328 10 : if (strcasecmp(path_id->trid.trsvcid, p->trid.trsvcid) != 0) {
6329 0 : return false;
6330 : }
6331 : }
6332 :
6333 63 : if (!spdk_mem_all_zero(path_id->trid.subnqn, sizeof(path_id->trid.subnqn))) {
6334 10 : if (strcmp(path_id->trid.subnqn, p->trid.subnqn) != 0) {
6335 0 : return false;
6336 : }
6337 : }
6338 :
6339 63 : if (!spdk_mem_all_zero(path_id->hostid.hostaddr, sizeof(path_id->hostid.hostaddr))) {
6340 0 : if (strcmp(path_id->hostid.hostaddr, p->hostid.hostaddr) != 0) {
6341 0 : return false;
6342 : }
6343 : }
6344 :
6345 63 : if (!spdk_mem_all_zero(path_id->hostid.hostsvcid, sizeof(path_id->hostid.hostsvcid))) {
6346 0 : if (strcmp(path_id->hostid.hostsvcid, p->hostid.hostsvcid) != 0) {
6347 0 : return false;
6348 : }
6349 : }
6350 :
6351 63 : return true;
6352 : }
6353 :
6354 : static bool
6355 2 : nvme_path_id_exists(const char *name, const struct nvme_path_id *path_id)
6356 : {
6357 : struct nvme_bdev_ctrlr *nbdev_ctrlr;
6358 : struct nvme_ctrlr *ctrlr;
6359 : struct nvme_path_id *p;
6360 :
6361 2 : pthread_mutex_lock(&g_bdev_nvme_mutex);
6362 2 : nbdev_ctrlr = nvme_bdev_ctrlr_get_by_name(name);
6363 2 : if (!nbdev_ctrlr) {
6364 1 : pthread_mutex_unlock(&g_bdev_nvme_mutex);
6365 1 : return false;
6366 : }
6367 :
6368 1 : TAILQ_FOREACH(ctrlr, &nbdev_ctrlr->ctrlrs, tailq) {
6369 1 : pthread_mutex_lock(&ctrlr->mutex);
6370 1 : TAILQ_FOREACH(p, &ctrlr->trids, link) {
6371 1 : if (nvme_path_id_compare(p, path_id)) {
6372 1 : pthread_mutex_unlock(&ctrlr->mutex);
6373 1 : pthread_mutex_unlock(&g_bdev_nvme_mutex);
6374 1 : return true;
6375 : }
6376 : }
6377 0 : pthread_mutex_unlock(&ctrlr->mutex);
6378 : }
6379 0 : pthread_mutex_unlock(&g_bdev_nvme_mutex);
6380 :
6381 0 : return false;
6382 : }
6383 :
6384 : static int
6385 2 : bdev_nvme_delete_complete_poll(void *arg)
6386 : {
6387 2 : struct bdev_nvme_delete_ctx *ctx = arg;
6388 2 : int rc = 0;
6389 :
6390 2 : if (nvme_path_id_exists(ctx->name, &ctx->path_id)) {
6391 1 : if (ctx->timeout_ticks > spdk_get_ticks()) {
6392 1 : return SPDK_POLLER_BUSY;
6393 : }
6394 :
6395 0 : SPDK_ERRLOG("NVMe path '%s' still exists after delete\n", ctx->name);
6396 0 : rc = -ETIMEDOUT;
6397 : }
6398 :
6399 1 : spdk_poller_unregister(&ctx->poller);
6400 :
6401 1 : ctx->delete_done(ctx->delete_done_ctx, rc);
6402 1 : free_bdev_nvme_delete_ctx(ctx);
6403 :
6404 1 : return SPDK_POLLER_BUSY;
6405 : }
6406 :
6407 : static int
6408 63 : _bdev_nvme_delete(struct nvme_ctrlr *nvme_ctrlr, const struct nvme_path_id *path_id)
6409 : {
6410 : struct nvme_path_id *p, *t;
6411 : spdk_msg_fn msg_fn;
6412 63 : int rc = -ENXIO;
6413 :
6414 63 : pthread_mutex_lock(&nvme_ctrlr->mutex);
6415 :
6416 73 : TAILQ_FOREACH_REVERSE_SAFE(p, &nvme_ctrlr->trids, nvme_paths, link, t) {
6417 73 : if (p == TAILQ_FIRST(&nvme_ctrlr->trids)) {
6418 63 : break;
6419 : }
6420 :
6421 10 : if (!nvme_path_id_compare(p, path_id)) {
6422 3 : continue;
6423 : }
6424 :
6425 : /* We are not using the specified path. */
6426 7 : TAILQ_REMOVE(&nvme_ctrlr->trids, p, link);
6427 7 : free(p);
6428 7 : rc = 0;
6429 : }
6430 :
6431 63 : if (p == NULL || !nvme_path_id_compare(p, path_id)) {
6432 8 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
6433 8 : return rc;
6434 : }
6435 :
6436 : /* If we made it here, then this path is a match! Now we need to remove it. */
6437 :
6438 : /* This is the active path in use right now. The active path is always the first in the list. */
6439 55 : assert(p == nvme_ctrlr->active_path_id);
6440 :
6441 55 : if (!TAILQ_NEXT(p, link)) {
6442 : /* The current path is the only path. */
6443 54 : msg_fn = _nvme_ctrlr_destruct;
6444 54 : rc = bdev_nvme_delete_ctrlr_unsafe(nvme_ctrlr, false);
6445 : } else {
6446 : /* There is an alternative path. */
6447 1 : msg_fn = _bdev_nvme_reset_ctrlr;
6448 1 : rc = bdev_nvme_failover_ctrlr_unsafe(nvme_ctrlr, true);
6449 : }
6450 :
6451 55 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
6452 :
6453 55 : if (rc == 0) {
6454 55 : spdk_thread_send_msg(nvme_ctrlr->thread, msg_fn, nvme_ctrlr);
6455 0 : } else if (rc == -EALREADY) {
6456 0 : rc = 0;
6457 : }
6458 :
6459 55 : return rc;
6460 : }
6461 :
6462 : int
6463 48 : bdev_nvme_delete(const char *name, const struct nvme_path_id *path_id,
6464 : bdev_nvme_delete_done_fn delete_done, void *delete_done_ctx)
6465 : {
6466 : struct nvme_bdev_ctrlr *nbdev_ctrlr;
6467 : struct nvme_ctrlr *nvme_ctrlr, *tmp_nvme_ctrlr;
6468 48 : struct bdev_nvme_delete_ctx *ctx = NULL;
6469 48 : int rc = -ENXIO, _rc;
6470 :
6471 48 : if (name == NULL || path_id == NULL) {
6472 0 : rc = -EINVAL;
6473 0 : goto exit;
6474 : }
6475 :
6476 48 : pthread_mutex_lock(&g_bdev_nvme_mutex);
6477 :
6478 48 : nbdev_ctrlr = nvme_bdev_ctrlr_get_by_name(name);
6479 48 : if (nbdev_ctrlr == NULL) {
6480 0 : pthread_mutex_unlock(&g_bdev_nvme_mutex);
6481 :
6482 0 : SPDK_ERRLOG("Failed to find NVMe bdev controller\n");
6483 0 : rc = -ENODEV;
6484 0 : goto exit;
6485 : }
6486 :
6487 111 : TAILQ_FOREACH_SAFE(nvme_ctrlr, &nbdev_ctrlr->ctrlrs, tailq, tmp_nvme_ctrlr) {
6488 63 : _rc = _bdev_nvme_delete(nvme_ctrlr, path_id);
6489 63 : if (_rc < 0 && _rc != -ENXIO) {
6490 0 : pthread_mutex_unlock(&g_bdev_nvme_mutex);
6491 0 : rc = _rc;
6492 0 : goto exit;
6493 63 : } else if (_rc == 0) {
6494 : /* We traverse all remaining nvme_ctrlrs even if one nvme_ctrlr
6495 : * was deleted successfully. To remember the successful deletion,
6496 : * overwrite rc only if _rc is zero.
6497 : */
6498 57 : rc = 0;
6499 : }
6500 : }
6501 :
6502 48 : pthread_mutex_unlock(&g_bdev_nvme_mutex);
6503 :
6504 48 : if (rc != 0 || delete_done == NULL) {
6505 47 : goto exit;
6506 : }
6507 :
6508 1 : ctx = calloc(1, sizeof(*ctx));
6509 1 : if (ctx == NULL) {
6510 0 : SPDK_ERRLOG("Failed to allocate context for bdev_nvme_delete\n");
6511 0 : rc = -ENOMEM;
6512 0 : goto exit;
6513 : }
6514 :
6515 1 : ctx->name = strdup(name);
6516 1 : if (ctx->name == NULL) {
6517 0 : SPDK_ERRLOG("Failed to copy controller name for deletion\n");
6518 0 : rc = -ENOMEM;
6519 0 : goto exit;
6520 : }
6521 :
6522 1 : ctx->delete_done = delete_done;
6523 1 : ctx->delete_done_ctx = delete_done_ctx;
6524 1 : ctx->path_id = *path_id;
6525 1 : ctx->timeout_ticks = spdk_get_ticks() + 10 * spdk_get_ticks_hz();
6526 1 : ctx->poller = SPDK_POLLER_REGISTER(bdev_nvme_delete_complete_poll, ctx, 1000);
6527 1 : if (ctx->poller == NULL) {
6528 0 : SPDK_ERRLOG("Failed to register bdev_nvme_delete poller\n");
6529 0 : rc = -ENOMEM;
6530 0 : goto exit;
6531 : }
6532 :
6533 1 : exit:
6534 48 : if (rc != 0) {
6535 1 : free_bdev_nvme_delete_ctx(ctx);
6536 : }
6537 :
6538 48 : return rc;
6539 : }
6540 :
6541 : #define DISCOVERY_INFOLOG(ctx, format, ...) \
6542 : SPDK_INFOLOG(bdev_nvme, "Discovery[%s:%s] " format, ctx->trid.traddr, ctx->trid.trsvcid, ##__VA_ARGS__);
6543 :
6544 : #define DISCOVERY_ERRLOG(ctx, format, ...) \
6545 : SPDK_ERRLOG("Discovery[%s:%s] " format, ctx->trid.traddr, ctx->trid.trsvcid, ##__VA_ARGS__);
6546 :
6547 : struct discovery_entry_ctx {
6548 : char name[128];
6549 : struct spdk_nvme_transport_id trid;
6550 : struct spdk_nvme_ctrlr_opts drv_opts;
6551 : struct spdk_nvmf_discovery_log_page_entry entry;
6552 : TAILQ_ENTRY(discovery_entry_ctx) tailq;
6553 : struct discovery_ctx *ctx;
6554 : };
6555 :
6556 : struct discovery_ctx {
6557 : char *name;
6558 : spdk_bdev_nvme_start_discovery_fn start_cb_fn;
6559 : spdk_bdev_nvme_stop_discovery_fn stop_cb_fn;
6560 : void *cb_ctx;
6561 : struct spdk_nvme_probe_ctx *probe_ctx;
6562 : struct spdk_nvme_detach_ctx *detach_ctx;
6563 : struct spdk_nvme_ctrlr *ctrlr;
6564 : struct spdk_nvme_transport_id trid;
6565 : struct discovery_entry_ctx *entry_ctx_in_use;
6566 : struct spdk_poller *poller;
6567 : struct spdk_nvme_ctrlr_opts drv_opts;
6568 : struct nvme_ctrlr_opts bdev_opts;
6569 : struct spdk_nvmf_discovery_log_page *log_page;
6570 : TAILQ_ENTRY(discovery_ctx) tailq;
6571 : TAILQ_HEAD(, discovery_entry_ctx) nvm_entry_ctxs;
6572 : TAILQ_HEAD(, discovery_entry_ctx) discovery_entry_ctxs;
6573 : int rc;
6574 : bool wait_for_attach;
6575 : uint64_t timeout_ticks;
6576 : /* Denotes that the discovery service is being started. We're waiting
6577 : * for the initial connection to the discovery controller to be
6578 : * established and attach discovered NVM ctrlrs.
6579 : */
6580 : bool initializing;
6581 : /* Denotes if a discovery is currently in progress for this context.
6582 : * That includes connecting to newly discovered subsystems. Used to
6583 : * ensure we do not start a new discovery until an existing one is
6584 : * complete.
6585 : */
6586 : bool in_progress;
6587 :
6588 : /* Denotes if another discovery is needed after the one in progress
6589 : * completes. Set when we receive an AER completion while a discovery
6590 : * is already in progress.
6591 : */
6592 : bool pending;
6593 :
6594 : /* Signal to the discovery context poller that it should stop the
6595 : * discovery service, including detaching from the current discovery
6596 : * controller.
6597 : */
6598 : bool stop;
6599 :
6600 : struct spdk_thread *calling_thread;
6601 : uint32_t index;
6602 : uint32_t attach_in_progress;
6603 : char *hostnqn;
6604 :
6605 : /* Denotes if the discovery service was started by the mdns discovery.
6606 : */
6607 : bool from_mdns_discovery_service;
6608 : };
6609 :
6610 : TAILQ_HEAD(discovery_ctxs, discovery_ctx);
6611 : static struct discovery_ctxs g_discovery_ctxs = TAILQ_HEAD_INITIALIZER(g_discovery_ctxs);
6612 :
6613 : static void get_discovery_log_page(struct discovery_ctx *ctx);
6614 :
6615 : static void
6616 0 : free_discovery_ctx(struct discovery_ctx *ctx)
6617 : {
6618 0 : free(ctx->log_page);
6619 0 : free(ctx->hostnqn);
6620 0 : free(ctx->name);
6621 0 : free(ctx);
6622 0 : }
6623 :
6624 : static void
6625 0 : discovery_complete(struct discovery_ctx *ctx)
6626 : {
6627 0 : ctx->initializing = false;
6628 0 : ctx->in_progress = false;
6629 0 : if (ctx->pending) {
6630 0 : ctx->pending = false;
6631 0 : get_discovery_log_page(ctx);
6632 : }
6633 0 : }
6634 :
6635 : static void
6636 0 : build_trid_from_log_page_entry(struct spdk_nvme_transport_id *trid,
6637 : struct spdk_nvmf_discovery_log_page_entry *entry)
6638 : {
6639 : char *space;
6640 :
6641 0 : trid->trtype = entry->trtype;
6642 0 : trid->adrfam = entry->adrfam;
6643 0 : memcpy(trid->traddr, entry->traddr, sizeof(entry->traddr));
6644 0 : memcpy(trid->trsvcid, entry->trsvcid, sizeof(entry->trsvcid));
6645 : /* Because the source buffer (entry->subnqn) is longer than trid->subnqn, and
6646 : * before call to this function trid->subnqn is zeroed out, we need
6647 : * to copy sizeof(trid->subnqn) minus one byte to make sure the last character
6648 : * remains 0. Then we can shorten the string (replace ' ' with 0) if required
6649 : */
6650 0 : memcpy(trid->subnqn, entry->subnqn, sizeof(trid->subnqn) - 1);
6651 :
6652 : /* We want the traddr, trsvcid and subnqn fields to be NULL-terminated.
6653 : * But the log page entries typically pad them with spaces, not zeroes.
6654 : * So add a NULL terminator to each of these fields at the appropriate
6655 : * location.
6656 : */
6657 0 : space = strchr(trid->traddr, ' ');
6658 0 : if (space) {
6659 0 : *space = 0;
6660 : }
6661 0 : space = strchr(trid->trsvcid, ' ');
6662 0 : if (space) {
6663 0 : *space = 0;
6664 : }
6665 0 : space = strchr(trid->subnqn, ' ');
6666 0 : if (space) {
6667 0 : *space = 0;
6668 : }
6669 0 : }
6670 :
6671 : static void
6672 0 : _stop_discovery(void *_ctx)
6673 : {
6674 0 : struct discovery_ctx *ctx = _ctx;
6675 :
6676 0 : if (ctx->attach_in_progress > 0) {
6677 0 : spdk_thread_send_msg(spdk_get_thread(), _stop_discovery, ctx);
6678 0 : return;
6679 : }
6680 :
6681 0 : ctx->stop = true;
6682 :
6683 0 : while (!TAILQ_EMPTY(&ctx->nvm_entry_ctxs)) {
6684 : struct discovery_entry_ctx *entry_ctx;
6685 0 : struct nvme_path_id path = {};
6686 :
6687 0 : entry_ctx = TAILQ_FIRST(&ctx->nvm_entry_ctxs);
6688 0 : path.trid = entry_ctx->trid;
6689 0 : bdev_nvme_delete(entry_ctx->name, &path, NULL, NULL);
6690 0 : TAILQ_REMOVE(&ctx->nvm_entry_ctxs, entry_ctx, tailq);
6691 0 : free(entry_ctx);
6692 : }
6693 :
6694 0 : while (!TAILQ_EMPTY(&ctx->discovery_entry_ctxs)) {
6695 : struct discovery_entry_ctx *entry_ctx;
6696 :
6697 0 : entry_ctx = TAILQ_FIRST(&ctx->discovery_entry_ctxs);
6698 0 : TAILQ_REMOVE(&ctx->discovery_entry_ctxs, entry_ctx, tailq);
6699 0 : free(entry_ctx);
6700 : }
6701 :
6702 0 : free(ctx->entry_ctx_in_use);
6703 0 : ctx->entry_ctx_in_use = NULL;
6704 : }
6705 :
6706 : static void
6707 0 : stop_discovery(struct discovery_ctx *ctx, spdk_bdev_nvme_stop_discovery_fn cb_fn, void *cb_ctx)
6708 : {
6709 0 : ctx->stop_cb_fn = cb_fn;
6710 0 : ctx->cb_ctx = cb_ctx;
6711 :
6712 0 : if (ctx->attach_in_progress > 0) {
6713 0 : DISCOVERY_INFOLOG(ctx, "stopping discovery with attach_in_progress: %"PRIu32"\n",
6714 : ctx->attach_in_progress);
6715 : }
6716 :
6717 0 : _stop_discovery(ctx);
6718 0 : }
6719 :
6720 : static void
6721 2 : remove_discovery_entry(struct nvme_ctrlr *nvme_ctrlr)
6722 : {
6723 : struct discovery_ctx *d_ctx;
6724 : struct nvme_path_id *path_id;
6725 2 : struct spdk_nvme_transport_id trid = {};
6726 : struct discovery_entry_ctx *entry_ctx, *tmp;
6727 :
6728 2 : path_id = TAILQ_FIRST(&nvme_ctrlr->trids);
6729 :
6730 2 : TAILQ_FOREACH(d_ctx, &g_discovery_ctxs, tailq) {
6731 0 : TAILQ_FOREACH_SAFE(entry_ctx, &d_ctx->nvm_entry_ctxs, tailq, tmp) {
6732 0 : build_trid_from_log_page_entry(&trid, &entry_ctx->entry);
6733 0 : if (spdk_nvme_transport_id_compare(&trid, &path_id->trid) != 0) {
6734 0 : continue;
6735 : }
6736 :
6737 0 : TAILQ_REMOVE(&d_ctx->nvm_entry_ctxs, entry_ctx, tailq);
6738 0 : free(entry_ctx);
6739 0 : DISCOVERY_INFOLOG(d_ctx, "Remove discovery entry: %s:%s:%s\n",
6740 : trid.subnqn, trid.traddr, trid.trsvcid);
6741 :
6742 : /* Fail discovery ctrlr to force reattach attempt */
6743 0 : spdk_nvme_ctrlr_fail(d_ctx->ctrlr);
6744 : }
6745 : }
6746 2 : }
6747 :
6748 : static void
6749 0 : discovery_remove_controllers(struct discovery_ctx *ctx)
6750 : {
6751 0 : struct spdk_nvmf_discovery_log_page *log_page = ctx->log_page;
6752 : struct discovery_entry_ctx *entry_ctx, *tmp;
6753 : struct spdk_nvmf_discovery_log_page_entry *new_entry, *old_entry;
6754 0 : struct spdk_nvme_transport_id old_trid = {};
6755 : uint64_t numrec, i;
6756 : bool found;
6757 :
6758 0 : numrec = from_le64(&log_page->numrec);
6759 0 : TAILQ_FOREACH_SAFE(entry_ctx, &ctx->nvm_entry_ctxs, tailq, tmp) {
6760 0 : found = false;
6761 0 : old_entry = &entry_ctx->entry;
6762 0 : build_trid_from_log_page_entry(&old_trid, old_entry);
6763 0 : for (i = 0; i < numrec; i++) {
6764 0 : new_entry = &log_page->entries[i];
6765 0 : if (!memcmp(old_entry, new_entry, sizeof(*old_entry))) {
6766 0 : DISCOVERY_INFOLOG(ctx, "NVM %s:%s:%s found again\n",
6767 : old_trid.subnqn, old_trid.traddr, old_trid.trsvcid);
6768 0 : found = true;
6769 0 : break;
6770 : }
6771 : }
6772 0 : if (!found) {
6773 0 : struct nvme_path_id path = {};
6774 :
6775 0 : DISCOVERY_INFOLOG(ctx, "NVM %s:%s:%s not found\n",
6776 : old_trid.subnqn, old_trid.traddr, old_trid.trsvcid);
6777 :
6778 0 : path.trid = entry_ctx->trid;
6779 0 : bdev_nvme_delete(entry_ctx->name, &path, NULL, NULL);
6780 0 : TAILQ_REMOVE(&ctx->nvm_entry_ctxs, entry_ctx, tailq);
6781 0 : free(entry_ctx);
6782 : }
6783 : }
6784 0 : free(log_page);
6785 0 : ctx->log_page = NULL;
6786 0 : discovery_complete(ctx);
6787 0 : }
6788 :
6789 : static void
6790 0 : complete_discovery_start(struct discovery_ctx *ctx, int status)
6791 : {
6792 0 : ctx->timeout_ticks = 0;
6793 0 : ctx->rc = status;
6794 0 : if (ctx->start_cb_fn) {
6795 0 : ctx->start_cb_fn(ctx->cb_ctx, status);
6796 0 : ctx->start_cb_fn = NULL;
6797 0 : ctx->cb_ctx = NULL;
6798 : }
6799 0 : }
6800 :
6801 : static void
6802 0 : discovery_attach_controller_done(void *cb_ctx, size_t bdev_count, int rc)
6803 : {
6804 0 : struct discovery_entry_ctx *entry_ctx = cb_ctx;
6805 0 : struct discovery_ctx *ctx = entry_ctx->ctx;
6806 :
6807 0 : DISCOVERY_INFOLOG(ctx, "attach %s done\n", entry_ctx->name);
6808 0 : ctx->attach_in_progress--;
6809 0 : if (ctx->attach_in_progress == 0) {
6810 0 : complete_discovery_start(ctx, ctx->rc);
6811 0 : if (ctx->initializing && ctx->rc != 0) {
6812 0 : DISCOVERY_ERRLOG(ctx, "stopping discovery due to errors: %d\n", ctx->rc);
6813 0 : stop_discovery(ctx, NULL, ctx->cb_ctx);
6814 : } else {
6815 0 : discovery_remove_controllers(ctx);
6816 : }
6817 : }
6818 0 : }
6819 :
6820 : static struct discovery_entry_ctx *
6821 0 : create_discovery_entry_ctx(struct discovery_ctx *ctx, struct spdk_nvme_transport_id *trid)
6822 : {
6823 : struct discovery_entry_ctx *new_ctx;
6824 :
6825 0 : new_ctx = calloc(1, sizeof(*new_ctx));
6826 0 : if (new_ctx == NULL) {
6827 0 : DISCOVERY_ERRLOG(ctx, "could not allocate new entry_ctx\n");
6828 0 : return NULL;
6829 : }
6830 :
6831 0 : new_ctx->ctx = ctx;
6832 0 : memcpy(&new_ctx->trid, trid, sizeof(*trid));
6833 0 : spdk_nvme_ctrlr_get_default_ctrlr_opts(&new_ctx->drv_opts, sizeof(new_ctx->drv_opts));
6834 0 : snprintf(new_ctx->drv_opts.hostnqn, sizeof(new_ctx->drv_opts.hostnqn), "%s", ctx->hostnqn);
6835 0 : return new_ctx;
6836 : }
6837 :
6838 : static void
6839 0 : discovery_log_page_cb(void *cb_arg, int rc, const struct spdk_nvme_cpl *cpl,
6840 : struct spdk_nvmf_discovery_log_page *log_page)
6841 : {
6842 0 : struct discovery_ctx *ctx = cb_arg;
6843 : struct discovery_entry_ctx *entry_ctx, *tmp;
6844 : struct spdk_nvmf_discovery_log_page_entry *new_entry, *old_entry;
6845 : uint64_t numrec, i;
6846 : bool found;
6847 :
6848 0 : if (rc || spdk_nvme_cpl_is_error(cpl)) {
6849 0 : DISCOVERY_ERRLOG(ctx, "could not get discovery log page\n");
6850 0 : return;
6851 : }
6852 :
6853 0 : ctx->log_page = log_page;
6854 0 : assert(ctx->attach_in_progress == 0);
6855 0 : numrec = from_le64(&log_page->numrec);
6856 0 : TAILQ_FOREACH_SAFE(entry_ctx, &ctx->discovery_entry_ctxs, tailq, tmp) {
6857 0 : TAILQ_REMOVE(&ctx->discovery_entry_ctxs, entry_ctx, tailq);
6858 0 : free(entry_ctx);
6859 : }
6860 0 : for (i = 0; i < numrec; i++) {
6861 0 : found = false;
6862 0 : new_entry = &log_page->entries[i];
6863 0 : if (new_entry->subtype == SPDK_NVMF_SUBTYPE_DISCOVERY_CURRENT ||
6864 0 : new_entry->subtype == SPDK_NVMF_SUBTYPE_DISCOVERY) {
6865 : struct discovery_entry_ctx *new_ctx;
6866 0 : struct spdk_nvme_transport_id trid = {};
6867 :
6868 0 : build_trid_from_log_page_entry(&trid, new_entry);
6869 0 : new_ctx = create_discovery_entry_ctx(ctx, &trid);
6870 0 : if (new_ctx == NULL) {
6871 0 : DISCOVERY_ERRLOG(ctx, "could not allocate new entry_ctx\n");
6872 0 : break;
6873 : }
6874 :
6875 0 : TAILQ_INSERT_TAIL(&ctx->discovery_entry_ctxs, new_ctx, tailq);
6876 0 : continue;
6877 : }
6878 0 : TAILQ_FOREACH(entry_ctx, &ctx->nvm_entry_ctxs, tailq) {
6879 0 : old_entry = &entry_ctx->entry;
6880 0 : if (!memcmp(new_entry, old_entry, sizeof(*new_entry))) {
6881 0 : found = true;
6882 0 : break;
6883 : }
6884 : }
6885 0 : if (!found) {
6886 0 : struct discovery_entry_ctx *subnqn_ctx = NULL, *new_ctx;
6887 : struct discovery_ctx *d_ctx;
6888 :
6889 0 : TAILQ_FOREACH(d_ctx, &g_discovery_ctxs, tailq) {
6890 0 : TAILQ_FOREACH(subnqn_ctx, &d_ctx->nvm_entry_ctxs, tailq) {
6891 0 : if (!memcmp(subnqn_ctx->entry.subnqn, new_entry->subnqn,
6892 : sizeof(new_entry->subnqn))) {
6893 0 : break;
6894 : }
6895 : }
6896 0 : if (subnqn_ctx) {
6897 0 : break;
6898 : }
6899 : }
6900 :
6901 0 : new_ctx = calloc(1, sizeof(*new_ctx));
6902 0 : if (new_ctx == NULL) {
6903 0 : DISCOVERY_ERRLOG(ctx, "could not allocate new entry_ctx\n");
6904 0 : break;
6905 : }
6906 :
6907 0 : new_ctx->ctx = ctx;
6908 0 : memcpy(&new_ctx->entry, new_entry, sizeof(*new_entry));
6909 0 : build_trid_from_log_page_entry(&new_ctx->trid, new_entry);
6910 0 : if (subnqn_ctx) {
6911 0 : snprintf(new_ctx->name, sizeof(new_ctx->name), "%s", subnqn_ctx->name);
6912 0 : DISCOVERY_INFOLOG(ctx, "NVM %s:%s:%s new path for %s\n",
6913 : new_ctx->trid.subnqn, new_ctx->trid.traddr, new_ctx->trid.trsvcid,
6914 : new_ctx->name);
6915 : } else {
6916 0 : snprintf(new_ctx->name, sizeof(new_ctx->name), "%s%d", ctx->name, ctx->index++);
6917 0 : DISCOVERY_INFOLOG(ctx, "NVM %s:%s:%s new subsystem %s\n",
6918 : new_ctx->trid.subnqn, new_ctx->trid.traddr, new_ctx->trid.trsvcid,
6919 : new_ctx->name);
6920 : }
6921 0 : spdk_nvme_ctrlr_get_default_ctrlr_opts(&new_ctx->drv_opts, sizeof(new_ctx->drv_opts));
6922 0 : snprintf(new_ctx->drv_opts.hostnqn, sizeof(new_ctx->drv_opts.hostnqn), "%s", ctx->hostnqn);
6923 0 : rc = bdev_nvme_create(&new_ctx->trid, new_ctx->name, NULL, 0,
6924 : discovery_attach_controller_done, new_ctx,
6925 : &new_ctx->drv_opts, &ctx->bdev_opts, true);
6926 0 : if (rc == 0) {
6927 0 : TAILQ_INSERT_TAIL(&ctx->nvm_entry_ctxs, new_ctx, tailq);
6928 0 : ctx->attach_in_progress++;
6929 : } else {
6930 0 : DISCOVERY_ERRLOG(ctx, "bdev_nvme_create failed (%s)\n", spdk_strerror(-rc));
6931 : }
6932 : }
6933 : }
6934 :
6935 0 : if (ctx->attach_in_progress == 0) {
6936 0 : discovery_remove_controllers(ctx);
6937 : }
6938 : }
6939 :
6940 : static void
6941 0 : get_discovery_log_page(struct discovery_ctx *ctx)
6942 : {
6943 : int rc;
6944 :
6945 0 : assert(ctx->in_progress == false);
6946 0 : ctx->in_progress = true;
6947 0 : rc = spdk_nvme_ctrlr_get_discovery_log_page(ctx->ctrlr, discovery_log_page_cb, ctx);
6948 0 : if (rc != 0) {
6949 0 : DISCOVERY_ERRLOG(ctx, "could not get discovery log page\n");
6950 : }
6951 0 : DISCOVERY_INFOLOG(ctx, "sent discovery log page command\n");
6952 0 : }
6953 :
6954 : static void
6955 0 : discovery_aer_cb(void *arg, const struct spdk_nvme_cpl *cpl)
6956 : {
6957 0 : struct discovery_ctx *ctx = arg;
6958 0 : uint32_t log_page_id = (cpl->cdw0 & 0xFF0000) >> 16;
6959 :
6960 0 : if (spdk_nvme_cpl_is_error(cpl)) {
6961 0 : DISCOVERY_ERRLOG(ctx, "aer failed\n");
6962 0 : return;
6963 : }
6964 :
6965 0 : if (log_page_id != SPDK_NVME_LOG_DISCOVERY) {
6966 0 : DISCOVERY_ERRLOG(ctx, "unexpected log page 0x%x\n", log_page_id);
6967 0 : return;
6968 : }
6969 :
6970 0 : DISCOVERY_INFOLOG(ctx, "got aer\n");
6971 0 : if (ctx->in_progress) {
6972 0 : ctx->pending = true;
6973 0 : return;
6974 : }
6975 :
6976 0 : get_discovery_log_page(ctx);
6977 : }
6978 :
6979 : static void
6980 0 : discovery_attach_cb(void *cb_ctx, const struct spdk_nvme_transport_id *trid,
6981 : struct spdk_nvme_ctrlr *ctrlr, const struct spdk_nvme_ctrlr_opts *opts)
6982 : {
6983 0 : struct spdk_nvme_ctrlr_opts *user_opts = cb_ctx;
6984 : struct discovery_ctx *ctx;
6985 :
6986 0 : ctx = SPDK_CONTAINEROF(user_opts, struct discovery_ctx, drv_opts);
6987 :
6988 0 : DISCOVERY_INFOLOG(ctx, "discovery ctrlr attached\n");
6989 0 : ctx->probe_ctx = NULL;
6990 0 : ctx->ctrlr = ctrlr;
6991 :
6992 0 : if (ctx->rc != 0) {
6993 0 : DISCOVERY_ERRLOG(ctx, "encountered error while attaching discovery ctrlr: %d\n",
6994 : ctx->rc);
6995 0 : return;
6996 : }
6997 :
6998 0 : spdk_nvme_ctrlr_register_aer_callback(ctx->ctrlr, discovery_aer_cb, ctx);
6999 : }
7000 :
7001 : static int
7002 0 : discovery_poller(void *arg)
7003 : {
7004 0 : struct discovery_ctx *ctx = arg;
7005 : struct spdk_nvme_transport_id *trid;
7006 : int rc;
7007 :
7008 0 : if (ctx->detach_ctx) {
7009 0 : rc = spdk_nvme_detach_poll_async(ctx->detach_ctx);
7010 0 : if (rc != -EAGAIN) {
7011 0 : ctx->detach_ctx = NULL;
7012 0 : ctx->ctrlr = NULL;
7013 : }
7014 0 : } else if (ctx->stop) {
7015 0 : if (ctx->ctrlr != NULL) {
7016 0 : rc = spdk_nvme_detach_async(ctx->ctrlr, &ctx->detach_ctx);
7017 0 : if (rc == 0) {
7018 0 : return SPDK_POLLER_BUSY;
7019 : }
7020 0 : DISCOVERY_ERRLOG(ctx, "could not detach discovery ctrlr\n");
7021 : }
7022 0 : spdk_poller_unregister(&ctx->poller);
7023 0 : TAILQ_REMOVE(&g_discovery_ctxs, ctx, tailq);
7024 0 : assert(ctx->start_cb_fn == NULL);
7025 0 : if (ctx->stop_cb_fn != NULL) {
7026 0 : ctx->stop_cb_fn(ctx->cb_ctx);
7027 : }
7028 0 : free_discovery_ctx(ctx);
7029 0 : } else if (ctx->probe_ctx == NULL && ctx->ctrlr == NULL) {
7030 0 : if (ctx->timeout_ticks != 0 && ctx->timeout_ticks < spdk_get_ticks()) {
7031 0 : DISCOVERY_ERRLOG(ctx, "timed out while attaching discovery ctrlr\n");
7032 0 : assert(ctx->initializing);
7033 0 : spdk_poller_unregister(&ctx->poller);
7034 0 : TAILQ_REMOVE(&g_discovery_ctxs, ctx, tailq);
7035 0 : complete_discovery_start(ctx, -ETIMEDOUT);
7036 0 : stop_discovery(ctx, NULL, NULL);
7037 0 : free_discovery_ctx(ctx);
7038 0 : return SPDK_POLLER_BUSY;
7039 : }
7040 :
7041 0 : assert(ctx->entry_ctx_in_use == NULL);
7042 0 : ctx->entry_ctx_in_use = TAILQ_FIRST(&ctx->discovery_entry_ctxs);
7043 0 : TAILQ_REMOVE(&ctx->discovery_entry_ctxs, ctx->entry_ctx_in_use, tailq);
7044 0 : trid = &ctx->entry_ctx_in_use->trid;
7045 0 : ctx->probe_ctx = spdk_nvme_connect_async(trid, &ctx->drv_opts, discovery_attach_cb);
7046 0 : if (ctx->probe_ctx) {
7047 0 : spdk_poller_unregister(&ctx->poller);
7048 0 : ctx->poller = SPDK_POLLER_REGISTER(discovery_poller, ctx, 1000);
7049 : } else {
7050 0 : DISCOVERY_ERRLOG(ctx, "could not start discovery connect\n");
7051 0 : TAILQ_INSERT_TAIL(&ctx->discovery_entry_ctxs, ctx->entry_ctx_in_use, tailq);
7052 0 : ctx->entry_ctx_in_use = NULL;
7053 : }
7054 0 : } else if (ctx->probe_ctx) {
7055 0 : if (ctx->timeout_ticks != 0 && ctx->timeout_ticks < spdk_get_ticks()) {
7056 0 : DISCOVERY_ERRLOG(ctx, "timed out while attaching discovery ctrlr\n");
7057 0 : complete_discovery_start(ctx, -ETIMEDOUT);
7058 0 : return SPDK_POLLER_BUSY;
7059 : }
7060 :
7061 0 : rc = spdk_nvme_probe_poll_async(ctx->probe_ctx);
7062 0 : if (rc != -EAGAIN) {
7063 0 : if (ctx->rc != 0) {
7064 0 : assert(ctx->initializing);
7065 0 : stop_discovery(ctx, NULL, ctx->cb_ctx);
7066 : } else {
7067 0 : assert(rc == 0);
7068 0 : DISCOVERY_INFOLOG(ctx, "discovery ctrlr connected\n");
7069 0 : ctx->rc = rc;
7070 0 : get_discovery_log_page(ctx);
7071 : }
7072 : }
7073 : } else {
7074 0 : if (ctx->timeout_ticks != 0 && ctx->timeout_ticks < spdk_get_ticks()) {
7075 0 : DISCOVERY_ERRLOG(ctx, "timed out while attaching NVM ctrlrs\n");
7076 0 : complete_discovery_start(ctx, -ETIMEDOUT);
7077 : /* We need to wait until all NVM ctrlrs are attached before we stop the
7078 : * discovery service to make sure we don't detach a ctrlr that is still
7079 : * being attached.
7080 : */
7081 0 : if (ctx->attach_in_progress == 0) {
7082 0 : stop_discovery(ctx, NULL, ctx->cb_ctx);
7083 0 : return SPDK_POLLER_BUSY;
7084 : }
7085 : }
7086 :
7087 0 : rc = spdk_nvme_ctrlr_process_admin_completions(ctx->ctrlr);
7088 0 : if (rc < 0) {
7089 0 : spdk_poller_unregister(&ctx->poller);
7090 0 : ctx->poller = SPDK_POLLER_REGISTER(discovery_poller, ctx, 1000 * 1000);
7091 0 : TAILQ_INSERT_TAIL(&ctx->discovery_entry_ctxs, ctx->entry_ctx_in_use, tailq);
7092 0 : ctx->entry_ctx_in_use = NULL;
7093 :
7094 0 : rc = spdk_nvme_detach_async(ctx->ctrlr, &ctx->detach_ctx);
7095 0 : if (rc != 0) {
7096 0 : DISCOVERY_ERRLOG(ctx, "could not detach discovery ctrlr\n");
7097 0 : ctx->ctrlr = NULL;
7098 : }
7099 : }
7100 : }
7101 :
7102 0 : return SPDK_POLLER_BUSY;
7103 : }
7104 :
7105 : static void
7106 0 : start_discovery_poller(void *arg)
7107 : {
7108 0 : struct discovery_ctx *ctx = arg;
7109 :
7110 0 : TAILQ_INSERT_TAIL(&g_discovery_ctxs, ctx, tailq);
7111 0 : ctx->poller = SPDK_POLLER_REGISTER(discovery_poller, ctx, 1000 * 1000);
7112 0 : }
7113 :
7114 : int
7115 0 : bdev_nvme_start_discovery(struct spdk_nvme_transport_id *trid,
7116 : const char *base_name,
7117 : struct spdk_nvme_ctrlr_opts *drv_opts,
7118 : struct nvme_ctrlr_opts *bdev_opts,
7119 : uint64_t attach_timeout,
7120 : bool from_mdns,
7121 : spdk_bdev_nvme_start_discovery_fn cb_fn, void *cb_ctx)
7122 : {
7123 : struct discovery_ctx *ctx;
7124 : struct discovery_entry_ctx *discovery_entry_ctx;
7125 :
7126 0 : snprintf(trid->subnqn, sizeof(trid->subnqn), "%s", SPDK_NVMF_DISCOVERY_NQN);
7127 0 : TAILQ_FOREACH(ctx, &g_discovery_ctxs, tailq) {
7128 0 : if (strcmp(ctx->name, base_name) == 0) {
7129 0 : return -EEXIST;
7130 : }
7131 :
7132 0 : if (ctx->entry_ctx_in_use != NULL) {
7133 0 : if (!spdk_nvme_transport_id_compare(trid, &ctx->entry_ctx_in_use->trid)) {
7134 0 : return -EEXIST;
7135 : }
7136 : }
7137 :
7138 0 : TAILQ_FOREACH(discovery_entry_ctx, &ctx->discovery_entry_ctxs, tailq) {
7139 0 : if (!spdk_nvme_transport_id_compare(trid, &discovery_entry_ctx->trid)) {
7140 0 : return -EEXIST;
7141 : }
7142 : }
7143 : }
7144 :
7145 0 : ctx = calloc(1, sizeof(*ctx));
7146 0 : if (ctx == NULL) {
7147 0 : return -ENOMEM;
7148 : }
7149 :
7150 0 : ctx->name = strdup(base_name);
7151 0 : if (ctx->name == NULL) {
7152 0 : free_discovery_ctx(ctx);
7153 0 : return -ENOMEM;
7154 : }
7155 0 : memcpy(&ctx->drv_opts, drv_opts, sizeof(*drv_opts));
7156 0 : memcpy(&ctx->bdev_opts, bdev_opts, sizeof(*bdev_opts));
7157 0 : ctx->from_mdns_discovery_service = from_mdns;
7158 0 : ctx->bdev_opts.from_discovery_service = true;
7159 0 : ctx->calling_thread = spdk_get_thread();
7160 0 : ctx->start_cb_fn = cb_fn;
7161 0 : ctx->cb_ctx = cb_ctx;
7162 0 : ctx->initializing = true;
7163 0 : if (ctx->start_cb_fn) {
7164 : /* We can use this when dumping json to denote if this RPC parameter
7165 : * was specified or not.
7166 : */
7167 0 : ctx->wait_for_attach = true;
7168 : }
7169 0 : if (attach_timeout != 0) {
7170 0 : ctx->timeout_ticks = spdk_get_ticks() + attach_timeout *
7171 0 : spdk_get_ticks_hz() / 1000ull;
7172 : }
7173 0 : TAILQ_INIT(&ctx->nvm_entry_ctxs);
7174 0 : TAILQ_INIT(&ctx->discovery_entry_ctxs);
7175 0 : memcpy(&ctx->trid, trid, sizeof(*trid));
7176 : /* Even if user did not specify hostnqn, we can still strdup("\0"); */
7177 0 : ctx->hostnqn = strdup(ctx->drv_opts.hostnqn);
7178 0 : if (ctx->hostnqn == NULL) {
7179 0 : free_discovery_ctx(ctx);
7180 0 : return -ENOMEM;
7181 : }
7182 0 : discovery_entry_ctx = create_discovery_entry_ctx(ctx, trid);
7183 0 : if (discovery_entry_ctx == NULL) {
7184 0 : DISCOVERY_ERRLOG(ctx, "could not allocate new entry_ctx\n");
7185 0 : free_discovery_ctx(ctx);
7186 0 : return -ENOMEM;
7187 : }
7188 :
7189 0 : TAILQ_INSERT_TAIL(&ctx->discovery_entry_ctxs, discovery_entry_ctx, tailq);
7190 0 : spdk_thread_send_msg(g_bdev_nvme_init_thread, start_discovery_poller, ctx);
7191 0 : return 0;
7192 : }
7193 :
7194 : int
7195 0 : bdev_nvme_stop_discovery(const char *name, spdk_bdev_nvme_stop_discovery_fn cb_fn, void *cb_ctx)
7196 : {
7197 : struct discovery_ctx *ctx;
7198 :
7199 0 : TAILQ_FOREACH(ctx, &g_discovery_ctxs, tailq) {
7200 0 : if (strcmp(name, ctx->name) == 0) {
7201 0 : if (ctx->stop) {
7202 0 : return -EALREADY;
7203 : }
7204 : /* If we're still starting the discovery service and ->rc is non-zero, we're
7205 : * going to stop it as soon as we can
7206 : */
7207 0 : if (ctx->initializing && ctx->rc != 0) {
7208 0 : return -EALREADY;
7209 : }
7210 0 : stop_discovery(ctx, cb_fn, cb_ctx);
7211 0 : return 0;
7212 : }
7213 : }
7214 :
7215 0 : return -ENOENT;
7216 : }
7217 :
7218 : static int
7219 1 : bdev_nvme_library_init(void)
7220 : {
7221 1 : g_bdev_nvme_init_thread = spdk_get_thread();
7222 :
7223 1 : spdk_io_device_register(&g_nvme_bdev_ctrlrs, bdev_nvme_create_poll_group_cb,
7224 : bdev_nvme_destroy_poll_group_cb,
7225 : sizeof(struct nvme_poll_group), "nvme_poll_groups");
7226 :
7227 1 : return 0;
7228 : }
7229 :
7230 : static void
7231 1 : bdev_nvme_fini_destruct_ctrlrs(void)
7232 : {
7233 : struct nvme_bdev_ctrlr *nbdev_ctrlr;
7234 : struct nvme_ctrlr *nvme_ctrlr;
7235 :
7236 1 : pthread_mutex_lock(&g_bdev_nvme_mutex);
7237 1 : TAILQ_FOREACH(nbdev_ctrlr, &g_nvme_bdev_ctrlrs, tailq) {
7238 0 : TAILQ_FOREACH(nvme_ctrlr, &nbdev_ctrlr->ctrlrs, tailq) {
7239 0 : pthread_mutex_lock(&nvme_ctrlr->mutex);
7240 0 : if (nvme_ctrlr->destruct) {
7241 : /* This controller's destruction was already started
7242 : * before the application started shutting down
7243 : */
7244 0 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
7245 0 : continue;
7246 : }
7247 0 : nvme_ctrlr->destruct = true;
7248 0 : pthread_mutex_unlock(&nvme_ctrlr->mutex);
7249 :
7250 0 : spdk_thread_send_msg(nvme_ctrlr->thread, _nvme_ctrlr_destruct,
7251 : nvme_ctrlr);
7252 : }
7253 : }
7254 :
7255 1 : g_bdev_nvme_module_finish = true;
7256 1 : if (TAILQ_EMPTY(&g_nvme_bdev_ctrlrs)) {
7257 1 : pthread_mutex_unlock(&g_bdev_nvme_mutex);
7258 1 : spdk_io_device_unregister(&g_nvme_bdev_ctrlrs, NULL);
7259 1 : spdk_bdev_module_fini_done();
7260 1 : return;
7261 : }
7262 :
7263 0 : pthread_mutex_unlock(&g_bdev_nvme_mutex);
7264 : }
7265 :
7266 : static void
7267 0 : check_discovery_fini(void *arg)
7268 : {
7269 0 : if (TAILQ_EMPTY(&g_discovery_ctxs)) {
7270 0 : bdev_nvme_fini_destruct_ctrlrs();
7271 : }
7272 0 : }
7273 :
7274 : static void
7275 1 : bdev_nvme_library_fini(void)
7276 : {
7277 : struct nvme_probe_skip_entry *entry, *entry_tmp;
7278 : struct discovery_ctx *ctx;
7279 :
7280 1 : spdk_poller_unregister(&g_hotplug_poller);
7281 1 : free(g_hotplug_probe_ctx);
7282 1 : g_hotplug_probe_ctx = NULL;
7283 :
7284 1 : TAILQ_FOREACH_SAFE(entry, &g_skipped_nvme_ctrlrs, tailq, entry_tmp) {
7285 0 : TAILQ_REMOVE(&g_skipped_nvme_ctrlrs, entry, tailq);
7286 0 : free(entry);
7287 : }
7288 :
7289 1 : assert(spdk_get_thread() == g_bdev_nvme_init_thread);
7290 1 : if (TAILQ_EMPTY(&g_discovery_ctxs)) {
7291 1 : bdev_nvme_fini_destruct_ctrlrs();
7292 : } else {
7293 0 : TAILQ_FOREACH(ctx, &g_discovery_ctxs, tailq) {
7294 0 : stop_discovery(ctx, check_discovery_fini, NULL);
7295 : }
7296 : }
7297 1 : }
7298 :
7299 : static void
7300 0 : bdev_nvme_verify_pi_error(struct nvme_bdev_io *bio)
7301 : {
7302 0 : struct spdk_bdev_io *bdev_io = spdk_bdev_io_from_ctx(bio);
7303 0 : struct spdk_bdev *bdev = bdev_io->bdev;
7304 0 : struct spdk_dif_ctx dif_ctx;
7305 0 : struct spdk_dif_error err_blk = {};
7306 : int rc;
7307 0 : struct spdk_dif_ctx_init_ext_opts dif_opts;
7308 :
7309 0 : dif_opts.size = SPDK_SIZEOF(&dif_opts, dif_pi_format);
7310 0 : dif_opts.dif_pi_format = SPDK_DIF_PI_FORMAT_16;
7311 0 : rc = spdk_dif_ctx_init(&dif_ctx,
7312 0 : bdev->blocklen, bdev->md_len, bdev->md_interleave,
7313 0 : bdev->dif_is_head_of_md, bdev->dif_type,
7314 : bdev_io->u.bdev.dif_check_flags,
7315 0 : bdev_io->u.bdev.offset_blocks, 0, 0, 0, 0, &dif_opts);
7316 0 : if (rc != 0) {
7317 0 : SPDK_ERRLOG("Initialization of DIF context failed\n");
7318 0 : return;
7319 : }
7320 :
7321 0 : if (bdev->md_interleave) {
7322 0 : rc = spdk_dif_verify(bdev_io->u.bdev.iovs, bdev_io->u.bdev.iovcnt,
7323 0 : bdev_io->u.bdev.num_blocks, &dif_ctx, &err_blk);
7324 : } else {
7325 0 : struct iovec md_iov = {
7326 0 : .iov_base = bdev_io->u.bdev.md_buf,
7327 0 : .iov_len = bdev_io->u.bdev.num_blocks * bdev->md_len,
7328 : };
7329 :
7330 0 : rc = spdk_dix_verify(bdev_io->u.bdev.iovs, bdev_io->u.bdev.iovcnt,
7331 0 : &md_iov, bdev_io->u.bdev.num_blocks, &dif_ctx, &err_blk);
7332 : }
7333 :
7334 0 : if (rc != 0) {
7335 0 : SPDK_ERRLOG("DIF error detected. type=%d, offset=%" PRIu32 "\n",
7336 : err_blk.err_type, err_blk.err_offset);
7337 : } else {
7338 0 : SPDK_ERRLOG("Hardware reported PI error but SPDK could not find any.\n");
7339 : }
7340 : }
7341 :
7342 : static void
7343 0 : bdev_nvme_no_pi_readv_done(void *ref, const struct spdk_nvme_cpl *cpl)
7344 : {
7345 0 : struct nvme_bdev_io *bio = ref;
7346 :
7347 0 : if (spdk_nvme_cpl_is_success(cpl)) {
7348 : /* Run PI verification for read data buffer. */
7349 0 : bdev_nvme_verify_pi_error(bio);
7350 : }
7351 :
7352 : /* Return original completion status */
7353 0 : bdev_nvme_io_complete_nvme_status(bio, &bio->cpl);
7354 0 : }
7355 :
7356 : static void
7357 3 : bdev_nvme_readv_done(void *ref, const struct spdk_nvme_cpl *cpl)
7358 : {
7359 3 : struct nvme_bdev_io *bio = ref;
7360 3 : struct spdk_bdev_io *bdev_io = spdk_bdev_io_from_ctx(bio);
7361 : int ret;
7362 :
7363 3 : if (spdk_unlikely(spdk_nvme_cpl_is_pi_error(cpl))) {
7364 0 : SPDK_ERRLOG("readv completed with PI error (sct=%d, sc=%d)\n",
7365 : cpl->status.sct, cpl->status.sc);
7366 :
7367 : /* Save completion status to use after verifying PI error. */
7368 0 : bio->cpl = *cpl;
7369 :
7370 0 : if (spdk_likely(nvme_io_path_is_available(bio->io_path))) {
7371 : /* Read without PI checking to verify PI error. */
7372 0 : ret = bdev_nvme_no_pi_readv(bio,
7373 : bdev_io->u.bdev.iovs,
7374 : bdev_io->u.bdev.iovcnt,
7375 : bdev_io->u.bdev.md_buf,
7376 : bdev_io->u.bdev.num_blocks,
7377 : bdev_io->u.bdev.offset_blocks);
7378 0 : if (ret == 0) {
7379 0 : return;
7380 : }
7381 : }
7382 : }
7383 :
7384 3 : bdev_nvme_io_complete_nvme_status(bio, cpl);
7385 : }
7386 :
7387 : static void
7388 25 : bdev_nvme_writev_done(void *ref, const struct spdk_nvme_cpl *cpl)
7389 : {
7390 25 : struct nvme_bdev_io *bio = ref;
7391 :
7392 25 : if (spdk_unlikely(spdk_nvme_cpl_is_pi_error(cpl))) {
7393 0 : SPDK_ERRLOG("writev completed with PI error (sct=%d, sc=%d)\n",
7394 : cpl->status.sct, cpl->status.sc);
7395 : /* Run PI verification for write data buffer if PI error is detected. */
7396 0 : bdev_nvme_verify_pi_error(bio);
7397 : }
7398 :
7399 25 : bdev_nvme_io_complete_nvme_status(bio, cpl);
7400 25 : }
7401 :
7402 : static void
7403 0 : bdev_nvme_zone_appendv_done(void *ref, const struct spdk_nvme_cpl *cpl)
7404 : {
7405 0 : struct nvme_bdev_io *bio = ref;
7406 0 : struct spdk_bdev_io *bdev_io = spdk_bdev_io_from_ctx(bio);
7407 :
7408 : /* spdk_bdev_io_get_append_location() requires that the ALBA is stored in offset_blocks.
7409 : * Additionally, offset_blocks has to be set before calling bdev_nvme_verify_pi_error().
7410 : */
7411 0 : bdev_io->u.bdev.offset_blocks = *(uint64_t *)&cpl->cdw0;
7412 :
7413 0 : if (spdk_nvme_cpl_is_pi_error(cpl)) {
7414 0 : SPDK_ERRLOG("zone append completed with PI error (sct=%d, sc=%d)\n",
7415 : cpl->status.sct, cpl->status.sc);
7416 : /* Run PI verification for zone append data buffer if PI error is detected. */
7417 0 : bdev_nvme_verify_pi_error(bio);
7418 : }
7419 :
7420 0 : bdev_nvme_io_complete_nvme_status(bio, cpl);
7421 0 : }
7422 :
7423 : static void
7424 1 : bdev_nvme_comparev_done(void *ref, const struct spdk_nvme_cpl *cpl)
7425 : {
7426 1 : struct nvme_bdev_io *bio = ref;
7427 :
7428 1 : if (spdk_nvme_cpl_is_pi_error(cpl)) {
7429 0 : SPDK_ERRLOG("comparev completed with PI error (sct=%d, sc=%d)\n",
7430 : cpl->status.sct, cpl->status.sc);
7431 : /* Run PI verification for compare data buffer if PI error is detected. */
7432 0 : bdev_nvme_verify_pi_error(bio);
7433 : }
7434 :
7435 1 : bdev_nvme_io_complete_nvme_status(bio, cpl);
7436 1 : }
7437 :
7438 : static void
7439 4 : bdev_nvme_comparev_and_writev_done(void *ref, const struct spdk_nvme_cpl *cpl)
7440 : {
7441 4 : struct nvme_bdev_io *bio = ref;
7442 :
7443 : /* Compare operation completion */
7444 4 : if (!bio->first_fused_completed) {
7445 : /* Save compare result for write callback */
7446 2 : bio->cpl = *cpl;
7447 2 : bio->first_fused_completed = true;
7448 2 : return;
7449 : }
7450 :
7451 : /* Write operation completion */
7452 2 : if (spdk_nvme_cpl_is_error(&bio->cpl)) {
7453 : /* If bio->cpl is already an error, it means the compare operation failed. In that case,
7454 : * complete the IO with the compare operation's status.
7455 : */
7456 1 : if (!spdk_nvme_cpl_is_error(cpl)) {
7457 1 : SPDK_ERRLOG("Unexpected write success after compare failure.\n");
7458 : }
7459 :
7460 1 : bdev_nvme_io_complete_nvme_status(bio, &bio->cpl);
7461 : } else {
7462 1 : bdev_nvme_io_complete_nvme_status(bio, cpl);
7463 : }
7464 : }
7465 :
7466 : static void
7467 1 : bdev_nvme_queued_done(void *ref, const struct spdk_nvme_cpl *cpl)
7468 : {
7469 1 : struct nvme_bdev_io *bio = ref;
7470 :
7471 1 : bdev_nvme_io_complete_nvme_status(bio, cpl);
7472 1 : }
7473 :
7474 : static int
7475 0 : fill_zone_from_report(struct spdk_bdev_zone_info *info, struct spdk_nvme_zns_zone_desc *desc)
7476 : {
7477 0 : switch (desc->zt) {
7478 0 : case SPDK_NVME_ZONE_TYPE_SEQWR:
7479 0 : info->type = SPDK_BDEV_ZONE_TYPE_SEQWR;
7480 0 : break;
7481 0 : default:
7482 0 : SPDK_ERRLOG("Invalid zone type: %#x in zone report\n", desc->zt);
7483 0 : return -EIO;
7484 : }
7485 :
7486 0 : switch (desc->zs) {
7487 0 : case SPDK_NVME_ZONE_STATE_EMPTY:
7488 0 : info->state = SPDK_BDEV_ZONE_STATE_EMPTY;
7489 0 : break;
7490 0 : case SPDK_NVME_ZONE_STATE_IOPEN:
7491 0 : info->state = SPDK_BDEV_ZONE_STATE_IMP_OPEN;
7492 0 : break;
7493 0 : case SPDK_NVME_ZONE_STATE_EOPEN:
7494 0 : info->state = SPDK_BDEV_ZONE_STATE_EXP_OPEN;
7495 0 : break;
7496 0 : case SPDK_NVME_ZONE_STATE_CLOSED:
7497 0 : info->state = SPDK_BDEV_ZONE_STATE_CLOSED;
7498 0 : break;
7499 0 : case SPDK_NVME_ZONE_STATE_RONLY:
7500 0 : info->state = SPDK_BDEV_ZONE_STATE_READ_ONLY;
7501 0 : break;
7502 0 : case SPDK_NVME_ZONE_STATE_FULL:
7503 0 : info->state = SPDK_BDEV_ZONE_STATE_FULL;
7504 0 : break;
7505 0 : case SPDK_NVME_ZONE_STATE_OFFLINE:
7506 0 : info->state = SPDK_BDEV_ZONE_STATE_OFFLINE;
7507 0 : break;
7508 0 : default:
7509 0 : SPDK_ERRLOG("Invalid zone state: %#x in zone report\n", desc->zs);
7510 0 : return -EIO;
7511 : }
7512 :
7513 0 : info->zone_id = desc->zslba;
7514 0 : info->write_pointer = desc->wp;
7515 0 : info->capacity = desc->zcap;
7516 :
7517 0 : return 0;
7518 : }
7519 :
7520 : static void
7521 0 : bdev_nvme_get_zone_info_done(void *ref, const struct spdk_nvme_cpl *cpl)
7522 : {
7523 0 : struct nvme_bdev_io *bio = ref;
7524 0 : struct spdk_bdev_io *bdev_io = spdk_bdev_io_from_ctx(bio);
7525 0 : uint64_t zone_id = bdev_io->u.zone_mgmt.zone_id;
7526 0 : uint32_t zones_to_copy = bdev_io->u.zone_mgmt.num_zones;
7527 0 : struct spdk_bdev_zone_info *info = bdev_io->u.zone_mgmt.buf;
7528 : uint64_t max_zones_per_buf, i;
7529 : uint32_t zone_report_bufsize;
7530 : struct spdk_nvme_ns *ns;
7531 : struct spdk_nvme_qpair *qpair;
7532 : int ret;
7533 :
7534 0 : if (spdk_nvme_cpl_is_error(cpl)) {
7535 0 : goto out_complete_io_nvme_cpl;
7536 : }
7537 :
7538 0 : if (spdk_unlikely(!nvme_io_path_is_available(bio->io_path))) {
7539 0 : ret = -ENXIO;
7540 0 : goto out_complete_io_ret;
7541 : }
7542 :
7543 0 : ns = bio->io_path->nvme_ns->ns;
7544 0 : qpair = bio->io_path->qpair->qpair;
7545 :
7546 0 : zone_report_bufsize = spdk_nvme_ns_get_max_io_xfer_size(ns);
7547 0 : max_zones_per_buf = (zone_report_bufsize - sizeof(*bio->zone_report_buf)) /
7548 : sizeof(bio->zone_report_buf->descs[0]);
7549 :
7550 0 : if (bio->zone_report_buf->nr_zones > max_zones_per_buf) {
7551 0 : ret = -EINVAL;
7552 0 : goto out_complete_io_ret;
7553 : }
7554 :
7555 0 : if (!bio->zone_report_buf->nr_zones) {
7556 0 : ret = -EINVAL;
7557 0 : goto out_complete_io_ret;
7558 : }
7559 :
7560 0 : for (i = 0; i < bio->zone_report_buf->nr_zones && bio->handled_zones < zones_to_copy; i++) {
7561 0 : ret = fill_zone_from_report(&info[bio->handled_zones],
7562 0 : &bio->zone_report_buf->descs[i]);
7563 0 : if (ret) {
7564 0 : goto out_complete_io_ret;
7565 : }
7566 0 : bio->handled_zones++;
7567 : }
7568 :
7569 0 : if (bio->handled_zones < zones_to_copy) {
7570 0 : uint64_t zone_size_lba = spdk_nvme_zns_ns_get_zone_size_sectors(ns);
7571 0 : uint64_t slba = zone_id + (zone_size_lba * bio->handled_zones);
7572 :
7573 0 : memset(bio->zone_report_buf, 0, zone_report_bufsize);
7574 0 : ret = spdk_nvme_zns_report_zones(ns, qpair,
7575 0 : bio->zone_report_buf, zone_report_bufsize,
7576 : slba, SPDK_NVME_ZRA_LIST_ALL, true,
7577 : bdev_nvme_get_zone_info_done, bio);
7578 0 : if (!ret) {
7579 0 : return;
7580 : } else {
7581 0 : goto out_complete_io_ret;
7582 : }
7583 : }
7584 :
7585 0 : out_complete_io_nvme_cpl:
7586 0 : free(bio->zone_report_buf);
7587 0 : bio->zone_report_buf = NULL;
7588 0 : bdev_nvme_io_complete_nvme_status(bio, cpl);
7589 0 : return;
7590 :
7591 0 : out_complete_io_ret:
7592 0 : free(bio->zone_report_buf);
7593 0 : bio->zone_report_buf = NULL;
7594 0 : bdev_nvme_io_complete(bio, ret);
7595 : }
7596 :
7597 : static void
7598 0 : bdev_nvme_zone_management_done(void *ref, const struct spdk_nvme_cpl *cpl)
7599 : {
7600 0 : struct nvme_bdev_io *bio = ref;
7601 :
7602 0 : bdev_nvme_io_complete_nvme_status(bio, cpl);
7603 0 : }
7604 :
7605 : static void
7606 4 : bdev_nvme_admin_passthru_complete_nvme_status(void *ctx)
7607 : {
7608 4 : struct nvme_bdev_io *bio = ctx;
7609 4 : struct spdk_bdev_io *bdev_io = spdk_bdev_io_from_ctx(bio);
7610 4 : const struct spdk_nvme_cpl *cpl = &bio->cpl;
7611 :
7612 4 : assert(bdev_nvme_io_type_is_admin(bdev_io->type));
7613 :
7614 4 : __bdev_nvme_io_complete(bdev_io, 0, cpl);
7615 4 : }
7616 :
7617 : static void
7618 3 : bdev_nvme_abort_complete(void *ctx)
7619 : {
7620 3 : struct nvme_bdev_io *bio = ctx;
7621 3 : struct spdk_bdev_io *bdev_io = spdk_bdev_io_from_ctx(bio);
7622 :
7623 3 : if (spdk_nvme_cpl_is_abort_success(&bio->cpl)) {
7624 3 : __bdev_nvme_io_complete(bdev_io, SPDK_BDEV_IO_STATUS_SUCCESS, NULL);
7625 : } else {
7626 0 : __bdev_nvme_io_complete(bdev_io, SPDK_BDEV_IO_STATUS_FAILED, NULL);
7627 : }
7628 3 : }
7629 :
7630 : static void
7631 3 : bdev_nvme_abort_done(void *ref, const struct spdk_nvme_cpl *cpl)
7632 : {
7633 3 : struct nvme_bdev_io *bio = ref;
7634 3 : struct spdk_bdev_io *bdev_io = spdk_bdev_io_from_ctx(bio);
7635 :
7636 3 : bio->cpl = *cpl;
7637 3 : spdk_thread_send_msg(spdk_bdev_io_get_thread(bdev_io), bdev_nvme_abort_complete, bio);
7638 3 : }
7639 :
7640 : static void
7641 4 : bdev_nvme_admin_passthru_done(void *ref, const struct spdk_nvme_cpl *cpl)
7642 : {
7643 4 : struct nvme_bdev_io *bio = ref;
7644 4 : struct spdk_bdev_io *bdev_io = spdk_bdev_io_from_ctx(bio);
7645 :
7646 4 : bio->cpl = *cpl;
7647 4 : spdk_thread_send_msg(spdk_bdev_io_get_thread(bdev_io),
7648 : bdev_nvme_admin_passthru_complete_nvme_status, bio);
7649 4 : }
7650 :
7651 : static void
7652 0 : bdev_nvme_queued_reset_sgl(void *ref, uint32_t sgl_offset)
7653 : {
7654 0 : struct nvme_bdev_io *bio = ref;
7655 : struct iovec *iov;
7656 :
7657 0 : bio->iov_offset = sgl_offset;
7658 0 : for (bio->iovpos = 0; bio->iovpos < bio->iovcnt; bio->iovpos++) {
7659 0 : iov = &bio->iovs[bio->iovpos];
7660 0 : if (bio->iov_offset < iov->iov_len) {
7661 0 : break;
7662 : }
7663 :
7664 0 : bio->iov_offset -= iov->iov_len;
7665 : }
7666 0 : }
7667 :
7668 : static int
7669 0 : bdev_nvme_queued_next_sge(void *ref, void **address, uint32_t *length)
7670 : {
7671 0 : struct nvme_bdev_io *bio = ref;
7672 : struct iovec *iov;
7673 :
7674 0 : assert(bio->iovpos < bio->iovcnt);
7675 :
7676 0 : iov = &bio->iovs[bio->iovpos];
7677 :
7678 0 : *address = iov->iov_base;
7679 0 : *length = iov->iov_len;
7680 :
7681 0 : if (bio->iov_offset) {
7682 0 : assert(bio->iov_offset <= iov->iov_len);
7683 0 : *address += bio->iov_offset;
7684 0 : *length -= bio->iov_offset;
7685 : }
7686 :
7687 0 : bio->iov_offset += *length;
7688 0 : if (bio->iov_offset == iov->iov_len) {
7689 0 : bio->iovpos++;
7690 0 : bio->iov_offset = 0;
7691 : }
7692 :
7693 0 : return 0;
7694 : }
7695 :
7696 : static void
7697 0 : bdev_nvme_queued_reset_fused_sgl(void *ref, uint32_t sgl_offset)
7698 : {
7699 0 : struct nvme_bdev_io *bio = ref;
7700 : struct iovec *iov;
7701 :
7702 0 : bio->fused_iov_offset = sgl_offset;
7703 0 : for (bio->fused_iovpos = 0; bio->fused_iovpos < bio->fused_iovcnt; bio->fused_iovpos++) {
7704 0 : iov = &bio->fused_iovs[bio->fused_iovpos];
7705 0 : if (bio->fused_iov_offset < iov->iov_len) {
7706 0 : break;
7707 : }
7708 :
7709 0 : bio->fused_iov_offset -= iov->iov_len;
7710 : }
7711 0 : }
7712 :
7713 : static int
7714 0 : bdev_nvme_queued_next_fused_sge(void *ref, void **address, uint32_t *length)
7715 : {
7716 0 : struct nvme_bdev_io *bio = ref;
7717 : struct iovec *iov;
7718 :
7719 0 : assert(bio->fused_iovpos < bio->fused_iovcnt);
7720 :
7721 0 : iov = &bio->fused_iovs[bio->fused_iovpos];
7722 :
7723 0 : *address = iov->iov_base;
7724 0 : *length = iov->iov_len;
7725 :
7726 0 : if (bio->fused_iov_offset) {
7727 0 : assert(bio->fused_iov_offset <= iov->iov_len);
7728 0 : *address += bio->fused_iov_offset;
7729 0 : *length -= bio->fused_iov_offset;
7730 : }
7731 :
7732 0 : bio->fused_iov_offset += *length;
7733 0 : if (bio->fused_iov_offset == iov->iov_len) {
7734 0 : bio->fused_iovpos++;
7735 0 : bio->fused_iov_offset = 0;
7736 : }
7737 :
7738 0 : return 0;
7739 : }
7740 :
7741 : static int
7742 0 : bdev_nvme_no_pi_readv(struct nvme_bdev_io *bio, struct iovec *iov, int iovcnt,
7743 : void *md, uint64_t lba_count, uint64_t lba)
7744 : {
7745 : int rc;
7746 :
7747 0 : SPDK_DEBUGLOG(bdev_nvme, "read %" PRIu64 " blocks with offset %#" PRIx64 " without PI check\n",
7748 : lba_count, lba);
7749 :
7750 0 : bio->iovs = iov;
7751 0 : bio->iovcnt = iovcnt;
7752 0 : bio->iovpos = 0;
7753 0 : bio->iov_offset = 0;
7754 :
7755 0 : rc = spdk_nvme_ns_cmd_readv_with_md(bio->io_path->nvme_ns->ns,
7756 0 : bio->io_path->qpair->qpair,
7757 : lba, lba_count,
7758 : bdev_nvme_no_pi_readv_done, bio, 0,
7759 : bdev_nvme_queued_reset_sgl, bdev_nvme_queued_next_sge,
7760 : md, 0, 0);
7761 :
7762 0 : if (rc != 0 && rc != -ENOMEM) {
7763 0 : SPDK_ERRLOG("no_pi_readv failed: rc = %d\n", rc);
7764 : }
7765 0 : return rc;
7766 : }
7767 :
7768 : static int
7769 3 : bdev_nvme_readv(struct nvme_bdev_io *bio, struct iovec *iov, int iovcnt,
7770 : void *md, uint64_t lba_count, uint64_t lba, uint32_t flags,
7771 : struct spdk_memory_domain *domain, void *domain_ctx,
7772 : struct spdk_accel_sequence *seq)
7773 : {
7774 3 : struct spdk_nvme_ns *ns = bio->io_path->nvme_ns->ns;
7775 3 : struct spdk_nvme_qpair *qpair = bio->io_path->qpair->qpair;
7776 : int rc;
7777 :
7778 3 : SPDK_DEBUGLOG(bdev_nvme, "read %" PRIu64 " blocks with offset %#" PRIx64 "\n",
7779 : lba_count, lba);
7780 :
7781 3 : bio->iovs = iov;
7782 3 : bio->iovcnt = iovcnt;
7783 3 : bio->iovpos = 0;
7784 3 : bio->iov_offset = 0;
7785 :
7786 3 : if (domain != NULL || seq != NULL) {
7787 1 : bio->ext_opts.size = SPDK_SIZEOF(&bio->ext_opts, accel_sequence);
7788 1 : bio->ext_opts.memory_domain = domain;
7789 1 : bio->ext_opts.memory_domain_ctx = domain_ctx;
7790 1 : bio->ext_opts.io_flags = flags;
7791 1 : bio->ext_opts.metadata = md;
7792 1 : bio->ext_opts.accel_sequence = seq;
7793 :
7794 1 : if (iovcnt == 1) {
7795 1 : rc = spdk_nvme_ns_cmd_read_ext(ns, qpair, iov[0].iov_base, lba, lba_count, bdev_nvme_readv_done,
7796 : bio, &bio->ext_opts);
7797 : } else {
7798 0 : rc = spdk_nvme_ns_cmd_readv_ext(ns, qpair, lba, lba_count,
7799 : bdev_nvme_readv_done, bio,
7800 : bdev_nvme_queued_reset_sgl,
7801 : bdev_nvme_queued_next_sge,
7802 : &bio->ext_opts);
7803 : }
7804 2 : } else if (iovcnt == 1) {
7805 2 : rc = spdk_nvme_ns_cmd_read_with_md(ns, qpair, iov[0].iov_base,
7806 : md, lba, lba_count, bdev_nvme_readv_done,
7807 : bio, flags, 0, 0);
7808 : } else {
7809 0 : rc = spdk_nvme_ns_cmd_readv_with_md(ns, qpair, lba, lba_count,
7810 : bdev_nvme_readv_done, bio, flags,
7811 : bdev_nvme_queued_reset_sgl,
7812 : bdev_nvme_queued_next_sge, md, 0, 0);
7813 : }
7814 :
7815 3 : if (spdk_unlikely(rc != 0 && rc != -ENOMEM)) {
7816 0 : SPDK_ERRLOG("readv failed: rc = %d\n", rc);
7817 : }
7818 3 : return rc;
7819 : }
7820 :
7821 : static int
7822 25 : bdev_nvme_writev(struct nvme_bdev_io *bio, struct iovec *iov, int iovcnt,
7823 : void *md, uint64_t lba_count, uint64_t lba, uint32_t flags,
7824 : struct spdk_memory_domain *domain, void *domain_ctx,
7825 : struct spdk_accel_sequence *seq,
7826 : union spdk_bdev_nvme_cdw12 cdw12, union spdk_bdev_nvme_cdw13 cdw13)
7827 : {
7828 25 : struct spdk_nvme_ns *ns = bio->io_path->nvme_ns->ns;
7829 25 : struct spdk_nvme_qpair *qpair = bio->io_path->qpair->qpair;
7830 : int rc;
7831 :
7832 25 : SPDK_DEBUGLOG(bdev_nvme, "write %" PRIu64 " blocks with offset %#" PRIx64 "\n",
7833 : lba_count, lba);
7834 :
7835 25 : bio->iovs = iov;
7836 25 : bio->iovcnt = iovcnt;
7837 25 : bio->iovpos = 0;
7838 25 : bio->iov_offset = 0;
7839 :
7840 25 : if (domain != NULL || seq != NULL) {
7841 0 : bio->ext_opts.size = SPDK_SIZEOF(&bio->ext_opts, accel_sequence);
7842 0 : bio->ext_opts.memory_domain = domain;
7843 0 : bio->ext_opts.memory_domain_ctx = domain_ctx;
7844 0 : bio->ext_opts.io_flags = flags | SPDK_NVME_IO_FLAGS_DIRECTIVE(cdw12.write.dtype);
7845 0 : bio->ext_opts.cdw13 = cdw13.raw;
7846 0 : bio->ext_opts.metadata = md;
7847 0 : bio->ext_opts.accel_sequence = seq;
7848 :
7849 0 : if (iovcnt == 1) {
7850 0 : rc = spdk_nvme_ns_cmd_write_ext(ns, qpair, iov[0].iov_base, lba, lba_count, bdev_nvme_writev_done,
7851 : bio, &bio->ext_opts);
7852 : } else {
7853 0 : rc = spdk_nvme_ns_cmd_writev_ext(ns, qpair, lba, lba_count,
7854 : bdev_nvme_writev_done, bio,
7855 : bdev_nvme_queued_reset_sgl,
7856 : bdev_nvme_queued_next_sge,
7857 : &bio->ext_opts);
7858 : }
7859 25 : } else if (iovcnt == 1) {
7860 25 : rc = spdk_nvme_ns_cmd_write_with_md(ns, qpair, iov[0].iov_base,
7861 : md, lba, lba_count, bdev_nvme_writev_done,
7862 : bio, flags, 0, 0);
7863 : } else {
7864 0 : rc = spdk_nvme_ns_cmd_writev_with_md(ns, qpair, lba, lba_count,
7865 : bdev_nvme_writev_done, bio, flags,
7866 : bdev_nvme_queued_reset_sgl,
7867 : bdev_nvme_queued_next_sge, md, 0, 0);
7868 : }
7869 :
7870 25 : if (spdk_unlikely(rc != 0 && rc != -ENOMEM)) {
7871 0 : SPDK_ERRLOG("writev failed: rc = %d\n", rc);
7872 : }
7873 25 : return rc;
7874 : }
7875 :
7876 : static int
7877 0 : bdev_nvme_zone_appendv(struct nvme_bdev_io *bio, struct iovec *iov, int iovcnt,
7878 : void *md, uint64_t lba_count, uint64_t zslba,
7879 : uint32_t flags)
7880 : {
7881 0 : struct spdk_nvme_ns *ns = bio->io_path->nvme_ns->ns;
7882 0 : struct spdk_nvme_qpair *qpair = bio->io_path->qpair->qpair;
7883 : int rc;
7884 :
7885 0 : SPDK_DEBUGLOG(bdev_nvme, "zone append %" PRIu64 " blocks to zone start lba %#" PRIx64 "\n",
7886 : lba_count, zslba);
7887 :
7888 0 : bio->iovs = iov;
7889 0 : bio->iovcnt = iovcnt;
7890 0 : bio->iovpos = 0;
7891 0 : bio->iov_offset = 0;
7892 :
7893 0 : if (iovcnt == 1) {
7894 0 : rc = spdk_nvme_zns_zone_append_with_md(ns, qpair, iov[0].iov_base, md, zslba,
7895 : lba_count,
7896 : bdev_nvme_zone_appendv_done, bio,
7897 : flags,
7898 : 0, 0);
7899 : } else {
7900 0 : rc = spdk_nvme_zns_zone_appendv_with_md(ns, qpair, zslba, lba_count,
7901 : bdev_nvme_zone_appendv_done, bio, flags,
7902 : bdev_nvme_queued_reset_sgl, bdev_nvme_queued_next_sge,
7903 : md, 0, 0);
7904 : }
7905 :
7906 0 : if (rc != 0 && rc != -ENOMEM) {
7907 0 : SPDK_ERRLOG("zone append failed: rc = %d\n", rc);
7908 : }
7909 0 : return rc;
7910 : }
7911 :
7912 : static int
7913 1 : bdev_nvme_comparev(struct nvme_bdev_io *bio, struct iovec *iov, int iovcnt,
7914 : void *md, uint64_t lba_count, uint64_t lba,
7915 : uint32_t flags)
7916 : {
7917 : int rc;
7918 :
7919 1 : SPDK_DEBUGLOG(bdev_nvme, "compare %" PRIu64 " blocks with offset %#" PRIx64 "\n",
7920 : lba_count, lba);
7921 :
7922 1 : bio->iovs = iov;
7923 1 : bio->iovcnt = iovcnt;
7924 1 : bio->iovpos = 0;
7925 1 : bio->iov_offset = 0;
7926 :
7927 1 : rc = spdk_nvme_ns_cmd_comparev_with_md(bio->io_path->nvme_ns->ns,
7928 1 : bio->io_path->qpair->qpair,
7929 : lba, lba_count,
7930 : bdev_nvme_comparev_done, bio, flags,
7931 : bdev_nvme_queued_reset_sgl, bdev_nvme_queued_next_sge,
7932 : md, 0, 0);
7933 :
7934 1 : if (rc != 0 && rc != -ENOMEM) {
7935 0 : SPDK_ERRLOG("comparev failed: rc = %d\n", rc);
7936 : }
7937 1 : return rc;
7938 : }
7939 :
7940 : static int
7941 2 : bdev_nvme_comparev_and_writev(struct nvme_bdev_io *bio, struct iovec *cmp_iov, int cmp_iovcnt,
7942 : struct iovec *write_iov, int write_iovcnt,
7943 : void *md, uint64_t lba_count, uint64_t lba, uint32_t flags)
7944 : {
7945 2 : struct spdk_nvme_ns *ns = bio->io_path->nvme_ns->ns;
7946 2 : struct spdk_nvme_qpair *qpair = bio->io_path->qpair->qpair;
7947 2 : struct spdk_bdev_io *bdev_io = spdk_bdev_io_from_ctx(bio);
7948 : int rc;
7949 :
7950 2 : SPDK_DEBUGLOG(bdev_nvme, "compare and write %" PRIu64 " blocks with offset %#" PRIx64 "\n",
7951 : lba_count, lba);
7952 :
7953 2 : bio->iovs = cmp_iov;
7954 2 : bio->iovcnt = cmp_iovcnt;
7955 2 : bio->iovpos = 0;
7956 2 : bio->iov_offset = 0;
7957 2 : bio->fused_iovs = write_iov;
7958 2 : bio->fused_iovcnt = write_iovcnt;
7959 2 : bio->fused_iovpos = 0;
7960 2 : bio->fused_iov_offset = 0;
7961 :
7962 2 : if (bdev_io->num_retries == 0) {
7963 2 : bio->first_fused_submitted = false;
7964 2 : bio->first_fused_completed = false;
7965 : }
7966 :
7967 2 : if (!bio->first_fused_submitted) {
7968 2 : flags |= SPDK_NVME_IO_FLAGS_FUSE_FIRST;
7969 2 : memset(&bio->cpl, 0, sizeof(bio->cpl));
7970 :
7971 2 : rc = spdk_nvme_ns_cmd_comparev_with_md(ns, qpair, lba, lba_count,
7972 : bdev_nvme_comparev_and_writev_done, bio, flags,
7973 : bdev_nvme_queued_reset_sgl, bdev_nvme_queued_next_sge, md, 0, 0);
7974 2 : if (rc == 0) {
7975 2 : bio->first_fused_submitted = true;
7976 2 : flags &= ~SPDK_NVME_IO_FLAGS_FUSE_FIRST;
7977 : } else {
7978 0 : if (rc != -ENOMEM) {
7979 0 : SPDK_ERRLOG("compare failed: rc = %d\n", rc);
7980 : }
7981 0 : return rc;
7982 : }
7983 : }
7984 :
7985 2 : flags |= SPDK_NVME_IO_FLAGS_FUSE_SECOND;
7986 :
7987 2 : rc = spdk_nvme_ns_cmd_writev_with_md(ns, qpair, lba, lba_count,
7988 : bdev_nvme_comparev_and_writev_done, bio, flags,
7989 : bdev_nvme_queued_reset_fused_sgl, bdev_nvme_queued_next_fused_sge, md, 0, 0);
7990 2 : if (rc != 0 && rc != -ENOMEM) {
7991 0 : SPDK_ERRLOG("write failed: rc = %d\n", rc);
7992 0 : rc = 0;
7993 : }
7994 :
7995 2 : return rc;
7996 : }
7997 :
7998 : static int
7999 1 : bdev_nvme_unmap(struct nvme_bdev_io *bio, uint64_t offset_blocks, uint64_t num_blocks)
8000 : {
8001 1 : struct spdk_nvme_dsm_range dsm_ranges[SPDK_NVME_DATASET_MANAGEMENT_MAX_RANGES];
8002 : struct spdk_nvme_dsm_range *range;
8003 : uint64_t offset, remaining;
8004 : uint64_t num_ranges_u64;
8005 : uint16_t num_ranges;
8006 : int rc;
8007 :
8008 1 : num_ranges_u64 = (num_blocks + SPDK_NVME_DATASET_MANAGEMENT_RANGE_MAX_BLOCKS - 1) /
8009 : SPDK_NVME_DATASET_MANAGEMENT_RANGE_MAX_BLOCKS;
8010 1 : if (num_ranges_u64 > SPDK_COUNTOF(dsm_ranges)) {
8011 0 : SPDK_ERRLOG("Unmap request for %" PRIu64 " blocks is too large\n", num_blocks);
8012 0 : return -EINVAL;
8013 : }
8014 1 : num_ranges = (uint16_t)num_ranges_u64;
8015 :
8016 1 : offset = offset_blocks;
8017 1 : remaining = num_blocks;
8018 1 : range = &dsm_ranges[0];
8019 :
8020 : /* Fill max-size ranges until the remaining blocks fit into one range */
8021 1 : while (remaining > SPDK_NVME_DATASET_MANAGEMENT_RANGE_MAX_BLOCKS) {
8022 0 : range->attributes.raw = 0;
8023 0 : range->length = SPDK_NVME_DATASET_MANAGEMENT_RANGE_MAX_BLOCKS;
8024 0 : range->starting_lba = offset;
8025 :
8026 0 : offset += SPDK_NVME_DATASET_MANAGEMENT_RANGE_MAX_BLOCKS;
8027 0 : remaining -= SPDK_NVME_DATASET_MANAGEMENT_RANGE_MAX_BLOCKS;
8028 0 : range++;
8029 : }
8030 :
8031 : /* Final range describes the remaining blocks */
8032 1 : range->attributes.raw = 0;
8033 1 : range->length = remaining;
8034 1 : range->starting_lba = offset;
8035 :
8036 1 : rc = spdk_nvme_ns_cmd_dataset_management(bio->io_path->nvme_ns->ns,
8037 1 : bio->io_path->qpair->qpair,
8038 : SPDK_NVME_DSM_ATTR_DEALLOCATE,
8039 : dsm_ranges, num_ranges,
8040 : bdev_nvme_queued_done, bio);
8041 :
8042 1 : return rc;
8043 : }
8044 :
8045 : static int
8046 0 : bdev_nvme_write_zeroes(struct nvme_bdev_io *bio, uint64_t offset_blocks, uint64_t num_blocks)
8047 : {
8048 0 : if (num_blocks > UINT16_MAX + 1) {
8049 0 : SPDK_ERRLOG("NVMe write zeroes is limited to 16-bit block count\n");
8050 0 : return -EINVAL;
8051 : }
8052 :
8053 0 : return spdk_nvme_ns_cmd_write_zeroes(bio->io_path->nvme_ns->ns,
8054 0 : bio->io_path->qpair->qpair,
8055 : offset_blocks, num_blocks,
8056 : bdev_nvme_queued_done, bio,
8057 : 0);
8058 : }
8059 :
8060 : static int
8061 0 : bdev_nvme_get_zone_info(struct nvme_bdev_io *bio, uint64_t zone_id, uint32_t num_zones,
8062 : struct spdk_bdev_zone_info *info)
8063 : {
8064 0 : struct spdk_nvme_ns *ns = bio->io_path->nvme_ns->ns;
8065 0 : struct spdk_nvme_qpair *qpair = bio->io_path->qpair->qpair;
8066 0 : uint32_t zone_report_bufsize = spdk_nvme_ns_get_max_io_xfer_size(ns);
8067 0 : uint64_t zone_size = spdk_nvme_zns_ns_get_zone_size_sectors(ns);
8068 0 : uint64_t total_zones = spdk_nvme_zns_ns_get_num_zones(ns);
8069 :
8070 0 : if (zone_id % zone_size != 0) {
8071 0 : return -EINVAL;
8072 : }
8073 :
8074 0 : if (num_zones > total_zones || !num_zones) {
8075 0 : return -EINVAL;
8076 : }
8077 :
8078 0 : assert(!bio->zone_report_buf);
8079 0 : bio->zone_report_buf = calloc(1, zone_report_bufsize);
8080 0 : if (!bio->zone_report_buf) {
8081 0 : return -ENOMEM;
8082 : }
8083 :
8084 0 : bio->handled_zones = 0;
8085 :
8086 0 : return spdk_nvme_zns_report_zones(ns, qpair, bio->zone_report_buf, zone_report_bufsize,
8087 : zone_id, SPDK_NVME_ZRA_LIST_ALL, true,
8088 : bdev_nvme_get_zone_info_done, bio);
8089 : }
8090 :
8091 : static int
8092 0 : bdev_nvme_zone_management(struct nvme_bdev_io *bio, uint64_t zone_id,
8093 : enum spdk_bdev_zone_action action)
8094 : {
8095 0 : struct spdk_nvme_ns *ns = bio->io_path->nvme_ns->ns;
8096 0 : struct spdk_nvme_qpair *qpair = bio->io_path->qpair->qpair;
8097 :
8098 0 : switch (action) {
8099 0 : case SPDK_BDEV_ZONE_CLOSE:
8100 0 : return spdk_nvme_zns_close_zone(ns, qpair, zone_id, false,
8101 : bdev_nvme_zone_management_done, bio);
8102 0 : case SPDK_BDEV_ZONE_FINISH:
8103 0 : return spdk_nvme_zns_finish_zone(ns, qpair, zone_id, false,
8104 : bdev_nvme_zone_management_done, bio);
8105 0 : case SPDK_BDEV_ZONE_OPEN:
8106 0 : return spdk_nvme_zns_open_zone(ns, qpair, zone_id, false,
8107 : bdev_nvme_zone_management_done, bio);
8108 0 : case SPDK_BDEV_ZONE_RESET:
8109 0 : return spdk_nvme_zns_reset_zone(ns, qpair, zone_id, false,
8110 : bdev_nvme_zone_management_done, bio);
8111 0 : case SPDK_BDEV_ZONE_OFFLINE:
8112 0 : return spdk_nvme_zns_offline_zone(ns, qpair, zone_id, false,
8113 : bdev_nvme_zone_management_done, bio);
8114 0 : default:
8115 0 : return -EINVAL;
8116 : }
8117 : }
8118 :
8119 : static void
8120 5 : bdev_nvme_admin_passthru(struct nvme_bdev_channel *nbdev_ch, struct nvme_bdev_io *bio,
8121 : struct spdk_nvme_cmd *cmd, void *buf, size_t nbytes)
8122 : {
8123 : struct nvme_io_path *io_path;
8124 : struct nvme_ctrlr *nvme_ctrlr;
8125 : uint32_t max_xfer_size;
8126 5 : int rc = -ENXIO;
8127 :
8128 : /* Choose the first ctrlr which is not failed. */
8129 8 : STAILQ_FOREACH(io_path, &nbdev_ch->io_path_list, stailq) {
8130 7 : nvme_ctrlr = io_path->qpair->ctrlr;
8131 :
8132 : /* We should skip any unavailable nvme_ctrlr rather than checking
8133 : * if the return value of spdk_nvme_ctrlr_cmd_admin_raw() is -ENXIO.
8134 : */
8135 7 : if (!nvme_ctrlr_is_available(nvme_ctrlr)) {
8136 3 : continue;
8137 : }
8138 :
8139 4 : max_xfer_size = spdk_nvme_ctrlr_get_max_xfer_size(nvme_ctrlr->ctrlr);
8140 :
8141 4 : if (nbytes > max_xfer_size) {
8142 0 : SPDK_ERRLOG("nbytes is greater than MDTS %" PRIu32 ".\n", max_xfer_size);
8143 0 : rc = -EINVAL;
8144 0 : goto err;
8145 : }
8146 :
8147 4 : rc = spdk_nvme_ctrlr_cmd_admin_raw(nvme_ctrlr->ctrlr, cmd, buf, (uint32_t)nbytes,
8148 : bdev_nvme_admin_passthru_done, bio);
8149 4 : if (rc == 0) {
8150 4 : return;
8151 : }
8152 : }
8153 :
8154 1 : err:
8155 1 : bdev_nvme_admin_complete(bio, rc);
8156 : }
8157 :
8158 : static int
8159 0 : bdev_nvme_io_passthru(struct nvme_bdev_io *bio, struct spdk_nvme_cmd *cmd,
8160 : void *buf, size_t nbytes)
8161 : {
8162 0 : struct spdk_nvme_ns *ns = bio->io_path->nvme_ns->ns;
8163 0 : struct spdk_nvme_qpair *qpair = bio->io_path->qpair->qpair;
8164 0 : uint32_t max_xfer_size = spdk_nvme_ns_get_max_io_xfer_size(ns);
8165 0 : struct spdk_nvme_ctrlr *ctrlr = spdk_nvme_ns_get_ctrlr(ns);
8166 :
8167 0 : if (nbytes > max_xfer_size) {
8168 0 : SPDK_ERRLOG("nbytes is greater than MDTS %" PRIu32 ".\n", max_xfer_size);
8169 0 : return -EINVAL;
8170 : }
8171 :
8172 : /*
8173 : * Each NVMe bdev is a specific namespace, and all NVMe I/O commands require a nsid,
8174 : * so fill it out automatically.
8175 : */
8176 0 : cmd->nsid = spdk_nvme_ns_get_id(ns);
8177 :
8178 0 : return spdk_nvme_ctrlr_cmd_io_raw(ctrlr, qpair, cmd, buf,
8179 : (uint32_t)nbytes, bdev_nvme_queued_done, bio);
8180 : }
8181 :
8182 : static int
8183 0 : bdev_nvme_io_passthru_md(struct nvme_bdev_io *bio, struct spdk_nvme_cmd *cmd,
8184 : void *buf, size_t nbytes, void *md_buf, size_t md_len)
8185 : {
8186 0 : struct spdk_nvme_ns *ns = bio->io_path->nvme_ns->ns;
8187 0 : struct spdk_nvme_qpair *qpair = bio->io_path->qpair->qpair;
8188 0 : size_t nr_sectors = nbytes / spdk_nvme_ns_get_extended_sector_size(ns);
8189 0 : uint32_t max_xfer_size = spdk_nvme_ns_get_max_io_xfer_size(ns);
8190 0 : struct spdk_nvme_ctrlr *ctrlr = spdk_nvme_ns_get_ctrlr(ns);
8191 :
8192 0 : if (nbytes > max_xfer_size) {
8193 0 : SPDK_ERRLOG("nbytes is greater than MDTS %" PRIu32 ".\n", max_xfer_size);
8194 0 : return -EINVAL;
8195 : }
8196 :
8197 0 : if (md_len != nr_sectors * spdk_nvme_ns_get_md_size(ns)) {
8198 0 : SPDK_ERRLOG("invalid meta data buffer size\n");
8199 0 : return -EINVAL;
8200 : }
8201 :
8202 : /*
8203 : * Each NVMe bdev is a specific namespace, and all NVMe I/O commands require a nsid,
8204 : * so fill it out automatically.
8205 : */
8206 0 : cmd->nsid = spdk_nvme_ns_get_id(ns);
8207 :
8208 0 : return spdk_nvme_ctrlr_cmd_io_raw_with_md(ctrlr, qpair, cmd, buf,
8209 : (uint32_t)nbytes, md_buf, bdev_nvme_queued_done, bio);
8210 : }
8211 :
8212 : static int
8213 0 : bdev_nvme_iov_passthru_md(struct nvme_bdev_io *bio,
8214 : struct spdk_nvme_cmd *cmd, struct iovec *iov, int iovcnt,
8215 : size_t nbytes, void *md_buf, size_t md_len)
8216 : {
8217 0 : struct spdk_nvme_ns *ns = bio->io_path->nvme_ns->ns;
8218 0 : struct spdk_nvme_qpair *qpair = bio->io_path->qpair->qpair;
8219 0 : size_t nr_sectors = nbytes / spdk_nvme_ns_get_extended_sector_size(ns);
8220 0 : uint32_t max_xfer_size = spdk_nvme_ns_get_max_io_xfer_size(ns);
8221 0 : struct spdk_nvme_ctrlr *ctrlr = spdk_nvme_ns_get_ctrlr(ns);
8222 :
8223 0 : bio->iovs = iov;
8224 0 : bio->iovcnt = iovcnt;
8225 0 : bio->iovpos = 0;
8226 0 : bio->iov_offset = 0;
8227 :
8228 0 : if (nbytes > max_xfer_size) {
8229 0 : SPDK_ERRLOG("nbytes is greater than MDTS %" PRIu32 ".\n", max_xfer_size);
8230 0 : return -EINVAL;
8231 : }
8232 :
8233 0 : if (md_len != nr_sectors * spdk_nvme_ns_get_md_size(ns)) {
8234 0 : SPDK_ERRLOG("invalid meta data buffer size\n");
8235 0 : return -EINVAL;
8236 : }
8237 :
8238 : /*
8239 : * Each NVMe bdev is a specific namespace, and all NVMe I/O commands
8240 : * require a nsid, so fill it out automatically.
8241 : */
8242 0 : cmd->nsid = spdk_nvme_ns_get_id(ns);
8243 :
8244 0 : return spdk_nvme_ctrlr_cmd_iov_raw_with_md(
8245 : ctrlr, qpair, cmd, (uint32_t)nbytes, md_buf, bdev_nvme_queued_done, bio,
8246 : bdev_nvme_queued_reset_sgl, bdev_nvme_queued_next_sge);
8247 : }
8248 :
8249 : static void
8250 6 : bdev_nvme_abort(struct nvme_bdev_channel *nbdev_ch, struct nvme_bdev_io *bio,
8251 : struct nvme_bdev_io *bio_to_abort)
8252 : {
8253 : struct nvme_io_path *io_path;
8254 6 : int rc = 0;
8255 :
8256 6 : rc = bdev_nvme_abort_retry_io(nbdev_ch, bio_to_abort);
8257 6 : if (rc == 0) {
8258 1 : bdev_nvme_admin_complete(bio, 0);
8259 1 : return;
8260 : }
8261 :
8262 5 : io_path = bio_to_abort->io_path;
8263 5 : if (io_path != NULL) {
8264 3 : rc = spdk_nvme_ctrlr_cmd_abort_ext(io_path->qpair->ctrlr->ctrlr,
8265 3 : io_path->qpair->qpair,
8266 : bio_to_abort,
8267 : bdev_nvme_abort_done, bio);
8268 : } else {
8269 3 : STAILQ_FOREACH(io_path, &nbdev_ch->io_path_list, stailq) {
8270 2 : rc = spdk_nvme_ctrlr_cmd_abort_ext(io_path->qpair->ctrlr->ctrlr,
8271 : NULL,
8272 : bio_to_abort,
8273 : bdev_nvme_abort_done, bio);
8274 :
8275 2 : if (rc != -ENOENT) {
8276 1 : break;
8277 : }
8278 : }
8279 : }
8280 :
8281 5 : if (rc != 0) {
8282 : /* If no command was found or there was any error, complete the abort
8283 : * request with failure.
8284 : */
8285 2 : bdev_nvme_admin_complete(bio, rc);
8286 : }
8287 : }
8288 :
8289 : static int
8290 0 : bdev_nvme_copy(struct nvme_bdev_io *bio, uint64_t dst_offset_blocks, uint64_t src_offset_blocks,
8291 : uint64_t num_blocks)
8292 : {
8293 0 : struct spdk_nvme_scc_source_range range = {
8294 : .slba = src_offset_blocks,
8295 0 : .nlb = num_blocks - 1
8296 : };
8297 :
8298 0 : return spdk_nvme_ns_cmd_copy(bio->io_path->nvme_ns->ns,
8299 0 : bio->io_path->qpair->qpair,
8300 : &range, 1, dst_offset_blocks,
8301 : bdev_nvme_queued_done, bio);
8302 : }
8303 :
8304 : static void
8305 0 : bdev_nvme_opts_config_json(struct spdk_json_write_ctx *w)
8306 : {
8307 : const char *action;
8308 : uint32_t i;
8309 :
8310 0 : if (g_opts.action_on_timeout == SPDK_BDEV_NVME_TIMEOUT_ACTION_RESET) {
8311 0 : action = "reset";
8312 0 : } else if (g_opts.action_on_timeout == SPDK_BDEV_NVME_TIMEOUT_ACTION_ABORT) {
8313 0 : action = "abort";
8314 : } else {
8315 0 : action = "none";
8316 : }
8317 :
8318 0 : spdk_json_write_object_begin(w);
8319 :
8320 0 : spdk_json_write_named_string(w, "method", "bdev_nvme_set_options");
8321 :
8322 0 : spdk_json_write_named_object_begin(w, "params");
8323 0 : spdk_json_write_named_string(w, "action_on_timeout", action);
8324 0 : spdk_json_write_named_uint64(w, "timeout_us", g_opts.timeout_us);
8325 0 : spdk_json_write_named_uint64(w, "timeout_admin_us", g_opts.timeout_admin_us);
8326 0 : spdk_json_write_named_uint32(w, "keep_alive_timeout_ms", g_opts.keep_alive_timeout_ms);
8327 0 : spdk_json_write_named_uint32(w, "arbitration_burst", g_opts.arbitration_burst);
8328 0 : spdk_json_write_named_uint32(w, "low_priority_weight", g_opts.low_priority_weight);
8329 0 : spdk_json_write_named_uint32(w, "medium_priority_weight", g_opts.medium_priority_weight);
8330 0 : spdk_json_write_named_uint32(w, "high_priority_weight", g_opts.high_priority_weight);
8331 0 : spdk_json_write_named_uint64(w, "nvme_adminq_poll_period_us", g_opts.nvme_adminq_poll_period_us);
8332 0 : spdk_json_write_named_uint64(w, "nvme_ioq_poll_period_us", g_opts.nvme_ioq_poll_period_us);
8333 0 : spdk_json_write_named_uint32(w, "io_queue_requests", g_opts.io_queue_requests);
8334 0 : spdk_json_write_named_bool(w, "delay_cmd_submit", g_opts.delay_cmd_submit);
8335 0 : spdk_json_write_named_uint32(w, "transport_retry_count", g_opts.transport_retry_count);
8336 0 : spdk_json_write_named_int32(w, "bdev_retry_count", g_opts.bdev_retry_count);
8337 0 : spdk_json_write_named_uint8(w, "transport_ack_timeout", g_opts.transport_ack_timeout);
8338 0 : spdk_json_write_named_int32(w, "ctrlr_loss_timeout_sec", g_opts.ctrlr_loss_timeout_sec);
8339 0 : spdk_json_write_named_uint32(w, "reconnect_delay_sec", g_opts.reconnect_delay_sec);
8340 0 : spdk_json_write_named_uint32(w, "fast_io_fail_timeout_sec", g_opts.fast_io_fail_timeout_sec);
8341 0 : spdk_json_write_named_bool(w, "disable_auto_failback", g_opts.disable_auto_failback);
8342 0 : spdk_json_write_named_bool(w, "generate_uuids", g_opts.generate_uuids);
8343 0 : spdk_json_write_named_uint8(w, "transport_tos", g_opts.transport_tos);
8344 0 : spdk_json_write_named_bool(w, "nvme_error_stat", g_opts.nvme_error_stat);
8345 0 : spdk_json_write_named_uint32(w, "rdma_srq_size", g_opts.rdma_srq_size);
8346 0 : spdk_json_write_named_bool(w, "io_path_stat", g_opts.io_path_stat);
8347 0 : spdk_json_write_named_bool(w, "allow_accel_sequence", g_opts.allow_accel_sequence);
8348 0 : spdk_json_write_named_uint32(w, "rdma_max_cq_size", g_opts.rdma_max_cq_size);
8349 0 : spdk_json_write_named_uint16(w, "rdma_cm_event_timeout_ms", g_opts.rdma_cm_event_timeout_ms);
8350 0 : spdk_json_write_named_array_begin(w, "dhchap_digests");
8351 0 : for (i = 0; i < 32; ++i) {
8352 0 : if (g_opts.dhchap_digests & SPDK_BIT(i)) {
8353 0 : spdk_json_write_string(w, spdk_nvme_dhchap_get_digest_name(i));
8354 : }
8355 : }
8356 0 : spdk_json_write_array_end(w);
8357 0 : spdk_json_write_named_array_begin(w, "dhchap_dhgroups");
8358 0 : for (i = 0; i < 32; ++i) {
8359 0 : if (g_opts.dhchap_dhgroups & SPDK_BIT(i)) {
8360 0 : spdk_json_write_string(w, spdk_nvme_dhchap_get_dhgroup_name(i));
8361 : }
8362 : }
8363 :
8364 0 : spdk_json_write_array_end(w);
8365 0 : spdk_json_write_object_end(w);
8366 :
8367 0 : spdk_json_write_object_end(w);
8368 0 : }
8369 :
8370 : static void
8371 0 : bdev_nvme_discovery_config_json(struct spdk_json_write_ctx *w, struct discovery_ctx *ctx)
8372 : {
8373 0 : struct spdk_nvme_transport_id trid;
8374 :
8375 0 : spdk_json_write_object_begin(w);
8376 :
8377 0 : spdk_json_write_named_string(w, "method", "bdev_nvme_start_discovery");
8378 :
8379 0 : spdk_json_write_named_object_begin(w, "params");
8380 0 : spdk_json_write_named_string(w, "name", ctx->name);
8381 0 : spdk_json_write_named_string(w, "hostnqn", ctx->hostnqn);
8382 :
8383 0 : trid = ctx->trid;
8384 0 : memset(trid.subnqn, 0, sizeof(trid.subnqn));
8385 0 : nvme_bdev_dump_trid_json(&trid, w);
8386 :
8387 0 : spdk_json_write_named_bool(w, "wait_for_attach", ctx->wait_for_attach);
8388 0 : spdk_json_write_named_int32(w, "ctrlr_loss_timeout_sec", ctx->bdev_opts.ctrlr_loss_timeout_sec);
8389 0 : spdk_json_write_named_uint32(w, "reconnect_delay_sec", ctx->bdev_opts.reconnect_delay_sec);
8390 0 : spdk_json_write_named_uint32(w, "fast_io_fail_timeout_sec",
8391 : ctx->bdev_opts.fast_io_fail_timeout_sec);
8392 0 : spdk_json_write_object_end(w);
8393 :
8394 0 : spdk_json_write_object_end(w);
8395 0 : }
8396 :
8397 : #ifdef SPDK_CONFIG_NVME_CUSE
8398 : static void
8399 0 : nvme_ctrlr_cuse_config_json(struct spdk_json_write_ctx *w,
8400 : struct nvme_ctrlr *nvme_ctrlr)
8401 0 : {
8402 0 : size_t cuse_name_size = 128;
8403 0 : char cuse_name[cuse_name_size];
8404 :
8405 0 : if (spdk_nvme_cuse_get_ctrlr_name(nvme_ctrlr->ctrlr,
8406 : cuse_name, &cuse_name_size) != 0) {
8407 0 : return;
8408 : }
8409 :
8410 0 : spdk_json_write_object_begin(w);
8411 :
8412 0 : spdk_json_write_named_string(w, "method", "bdev_nvme_cuse_register");
8413 :
8414 0 : spdk_json_write_named_object_begin(w, "params");
8415 0 : spdk_json_write_named_string(w, "name", nvme_ctrlr->nbdev_ctrlr->name);
8416 0 : spdk_json_write_object_end(w);
8417 :
8418 0 : spdk_json_write_object_end(w);
8419 : }
8420 : #endif
8421 :
8422 : static void
8423 0 : nvme_ctrlr_config_json(struct spdk_json_write_ctx *w,
8424 : struct nvme_ctrlr *nvme_ctrlr)
8425 : {
8426 : struct spdk_nvme_transport_id *trid;
8427 : const struct spdk_nvme_ctrlr_opts *opts;
8428 :
8429 0 : if (nvme_ctrlr->opts.from_discovery_service) {
8430 : /* Do not emit an RPC for this - it will be implicitly
8431 : * covered by a separate bdev_nvme_start_discovery or
8432 : * bdev_nvme_start_mdns_discovery RPC.
8433 : */
8434 0 : return;
8435 : }
8436 :
8437 0 : trid = &nvme_ctrlr->active_path_id->trid;
8438 :
8439 0 : spdk_json_write_object_begin(w);
8440 :
8441 0 : spdk_json_write_named_string(w, "method", "bdev_nvme_attach_controller");
8442 :
8443 0 : spdk_json_write_named_object_begin(w, "params");
8444 0 : spdk_json_write_named_string(w, "name", nvme_ctrlr->nbdev_ctrlr->name);
8445 0 : nvme_bdev_dump_trid_json(trid, w);
8446 0 : spdk_json_write_named_bool(w, "prchk_reftag",
8447 0 : (nvme_ctrlr->opts.prchk_flags & SPDK_NVME_IO_FLAGS_PRCHK_REFTAG) != 0);
8448 0 : spdk_json_write_named_bool(w, "prchk_guard",
8449 0 : (nvme_ctrlr->opts.prchk_flags & SPDK_NVME_IO_FLAGS_PRCHK_GUARD) != 0);
8450 0 : spdk_json_write_named_int32(w, "ctrlr_loss_timeout_sec", nvme_ctrlr->opts.ctrlr_loss_timeout_sec);
8451 0 : spdk_json_write_named_uint32(w, "reconnect_delay_sec", nvme_ctrlr->opts.reconnect_delay_sec);
8452 0 : spdk_json_write_named_uint32(w, "fast_io_fail_timeout_sec",
8453 : nvme_ctrlr->opts.fast_io_fail_timeout_sec);
8454 0 : if (nvme_ctrlr->psk != NULL) {
8455 0 : spdk_json_write_named_string(w, "psk", spdk_key_get_name(nvme_ctrlr->psk));
8456 0 : } else if (nvme_ctrlr->opts.psk[0] != '\0') {
8457 0 : spdk_json_write_named_string(w, "psk", nvme_ctrlr->opts.psk);
8458 : }
8459 :
8460 0 : opts = spdk_nvme_ctrlr_get_opts(nvme_ctrlr->ctrlr);
8461 0 : spdk_json_write_named_string(w, "hostnqn", opts->hostnqn);
8462 0 : spdk_json_write_named_bool(w, "hdgst", opts->header_digest);
8463 0 : spdk_json_write_named_bool(w, "ddgst", opts->data_digest);
8464 0 : if (opts->src_addr[0] != '\0') {
8465 0 : spdk_json_write_named_string(w, "hostaddr", opts->src_addr);
8466 : }
8467 0 : if (opts->src_svcid[0] != '\0') {
8468 0 : spdk_json_write_named_string(w, "hostsvcid", opts->src_svcid);
8469 : }
8470 :
8471 0 : spdk_json_write_object_end(w);
8472 :
8473 0 : spdk_json_write_object_end(w);
8474 : }
8475 :
8476 : static void
8477 0 : bdev_nvme_hotplug_config_json(struct spdk_json_write_ctx *w)
8478 : {
8479 0 : spdk_json_write_object_begin(w);
8480 0 : spdk_json_write_named_string(w, "method", "bdev_nvme_set_hotplug");
8481 :
8482 0 : spdk_json_write_named_object_begin(w, "params");
8483 0 : spdk_json_write_named_uint64(w, "period_us", g_nvme_hotplug_poll_period_us);
8484 0 : spdk_json_write_named_bool(w, "enable", g_nvme_hotplug_enabled);
8485 0 : spdk_json_write_object_end(w);
8486 :
8487 0 : spdk_json_write_object_end(w);
8488 0 : }
8489 :
8490 : static int
8491 0 : bdev_nvme_config_json(struct spdk_json_write_ctx *w)
8492 : {
8493 : struct nvme_bdev_ctrlr *nbdev_ctrlr;
8494 : struct nvme_ctrlr *nvme_ctrlr;
8495 : struct discovery_ctx *ctx;
8496 :
8497 0 : bdev_nvme_opts_config_json(w);
8498 :
8499 0 : pthread_mutex_lock(&g_bdev_nvme_mutex);
8500 :
8501 0 : TAILQ_FOREACH(nbdev_ctrlr, &g_nvme_bdev_ctrlrs, tailq) {
8502 0 : TAILQ_FOREACH(nvme_ctrlr, &nbdev_ctrlr->ctrlrs, tailq) {
8503 0 : nvme_ctrlr_config_json(w, nvme_ctrlr);
8504 :
8505 : #ifdef SPDK_CONFIG_NVME_CUSE
8506 0 : nvme_ctrlr_cuse_config_json(w, nvme_ctrlr);
8507 : #endif
8508 : }
8509 : }
8510 :
8511 0 : TAILQ_FOREACH(ctx, &g_discovery_ctxs, tailq) {
8512 0 : if (!ctx->from_mdns_discovery_service) {
8513 0 : bdev_nvme_discovery_config_json(w, ctx);
8514 : }
8515 : }
8516 :
8517 0 : bdev_nvme_mdns_discovery_config_json(w);
8518 :
8519 : /* Dump as last parameter to give all NVMe bdevs chance to be constructed
8520 : * before enabling hotplug poller.
8521 : */
8522 0 : bdev_nvme_hotplug_config_json(w);
8523 :
8524 0 : pthread_mutex_unlock(&g_bdev_nvme_mutex);
8525 0 : return 0;
8526 : }
8527 :
8528 : struct spdk_nvme_ctrlr *
8529 1 : bdev_nvme_get_ctrlr(struct spdk_bdev *bdev)
8530 : {
8531 : struct nvme_bdev *nbdev;
8532 : struct nvme_ns *nvme_ns;
8533 :
8534 1 : if (!bdev || bdev->module != &nvme_if) {
8535 0 : return NULL;
8536 : }
8537 :
8538 1 : nbdev = SPDK_CONTAINEROF(bdev, struct nvme_bdev, disk);
8539 1 : nvme_ns = TAILQ_FIRST(&nbdev->nvme_ns_list);
8540 1 : assert(nvme_ns != NULL);
8541 :
8542 1 : return nvme_ns->ctrlr->ctrlr;
8543 : }
8544 :
8545 : static bool
8546 12 : nvme_io_path_is_current(struct nvme_io_path *io_path)
8547 : {
8548 : const struct nvme_bdev_channel *nbdev_ch;
8549 : bool current;
8550 :
8551 12 : if (!nvme_io_path_is_available(io_path)) {
8552 4 : return false;
8553 : }
8554 :
8555 8 : nbdev_ch = io_path->nbdev_ch;
8556 8 : if (nbdev_ch == NULL) {
8557 1 : current = false;
8558 7 : } else if (nbdev_ch->mp_policy == BDEV_NVME_MP_POLICY_ACTIVE_ACTIVE) {
8559 3 : struct nvme_io_path *optimized_io_path = NULL;
8560 :
8561 6 : STAILQ_FOREACH(optimized_io_path, &nbdev_ch->io_path_list, stailq) {
8562 5 : if (optimized_io_path->nvme_ns->ana_state == SPDK_NVME_ANA_OPTIMIZED_STATE) {
8563 2 : break;
8564 : }
8565 : }
8566 :
8567 : /* A non-optimized path is only current if there are no optimized paths. */
8568 3 : current = (io_path->nvme_ns->ana_state == SPDK_NVME_ANA_OPTIMIZED_STATE) ||
8569 : (optimized_io_path == NULL);
8570 : } else {
8571 4 : if (nbdev_ch->current_io_path) {
8572 1 : current = (io_path == nbdev_ch->current_io_path);
8573 : } else {
8574 : struct nvme_io_path *first_path;
8575 :
8576 : /* We arrived here as there are no optimized paths for active-passive
8577 : * mode. Check if this io_path is the first one available on the list.
8578 : */
8579 3 : current = false;
8580 3 : STAILQ_FOREACH(first_path, &nbdev_ch->io_path_list, stailq) {
8581 3 : if (nvme_io_path_is_available(first_path)) {
8582 3 : current = (io_path == first_path);
8583 3 : break;
8584 : }
8585 : }
8586 : }
8587 : }
8588 :
8589 8 : return current;
8590 : }
8591 :
8592 : void
8593 0 : nvme_io_path_info_json(struct spdk_json_write_ctx *w, struct nvme_io_path *io_path)
8594 : {
8595 0 : struct nvme_ns *nvme_ns = io_path->nvme_ns;
8596 0 : struct nvme_ctrlr *nvme_ctrlr = io_path->qpair->ctrlr;
8597 : const struct spdk_nvme_ctrlr_data *cdata;
8598 : const struct spdk_nvme_transport_id *trid;
8599 : const char *adrfam_str;
8600 :
8601 0 : spdk_json_write_object_begin(w);
8602 :
8603 0 : spdk_json_write_named_string(w, "bdev_name", nvme_ns->bdev->disk.name);
8604 :
8605 0 : cdata = spdk_nvme_ctrlr_get_data(nvme_ctrlr->ctrlr);
8606 0 : trid = spdk_nvme_ctrlr_get_transport_id(nvme_ctrlr->ctrlr);
8607 :
8608 0 : spdk_json_write_named_uint32(w, "cntlid", cdata->cntlid);
8609 0 : spdk_json_write_named_bool(w, "current", nvme_io_path_is_current(io_path));
8610 0 : spdk_json_write_named_bool(w, "connected", nvme_qpair_is_connected(io_path->qpair));
8611 0 : spdk_json_write_named_bool(w, "accessible", nvme_ns_is_accessible(nvme_ns));
8612 :
8613 0 : spdk_json_write_named_object_begin(w, "transport");
8614 0 : spdk_json_write_named_string(w, "trtype", trid->trstring);
8615 0 : spdk_json_write_named_string(w, "traddr", trid->traddr);
8616 0 : if (trid->trsvcid[0] != '\0') {
8617 0 : spdk_json_write_named_string(w, "trsvcid", trid->trsvcid);
8618 : }
8619 0 : adrfam_str = spdk_nvme_transport_id_adrfam_str(trid->adrfam);
8620 0 : if (adrfam_str) {
8621 0 : spdk_json_write_named_string(w, "adrfam", adrfam_str);
8622 : }
8623 0 : spdk_json_write_object_end(w);
8624 :
8625 0 : spdk_json_write_object_end(w);
8626 0 : }
8627 :
8628 : void
8629 0 : bdev_nvme_get_discovery_info(struct spdk_json_write_ctx *w)
8630 : {
8631 : struct discovery_ctx *ctx;
8632 : struct discovery_entry_ctx *entry_ctx;
8633 :
8634 0 : spdk_json_write_array_begin(w);
8635 0 : TAILQ_FOREACH(ctx, &g_discovery_ctxs, tailq) {
8636 0 : spdk_json_write_object_begin(w);
8637 0 : spdk_json_write_named_string(w, "name", ctx->name);
8638 :
8639 0 : spdk_json_write_named_object_begin(w, "trid");
8640 0 : nvme_bdev_dump_trid_json(&ctx->trid, w);
8641 0 : spdk_json_write_object_end(w);
8642 :
8643 0 : spdk_json_write_named_array_begin(w, "referrals");
8644 0 : TAILQ_FOREACH(entry_ctx, &ctx->discovery_entry_ctxs, tailq) {
8645 0 : spdk_json_write_object_begin(w);
8646 0 : spdk_json_write_named_object_begin(w, "trid");
8647 0 : nvme_bdev_dump_trid_json(&entry_ctx->trid, w);
8648 0 : spdk_json_write_object_end(w);
8649 0 : spdk_json_write_object_end(w);
8650 : }
8651 0 : spdk_json_write_array_end(w);
8652 :
8653 0 : spdk_json_write_object_end(w);
8654 : }
8655 0 : spdk_json_write_array_end(w);
8656 0 : }
8657 :
8658 1 : SPDK_LOG_REGISTER_COMPONENT(bdev_nvme)
8659 :
8660 1 : SPDK_TRACE_REGISTER_FN(bdev_nvme_trace, "bdev_nvme", TRACE_GROUP_BDEV_NVME)
8661 : {
8662 0 : struct spdk_trace_tpoint_opts opts[] = {
8663 : {
8664 : "BDEV_NVME_IO_START", TRACE_BDEV_NVME_IO_START,
8665 : OWNER_TYPE_NONE, OBJECT_BDEV_NVME_IO, 1,
8666 : {{ "ctx", SPDK_TRACE_ARG_TYPE_PTR, 8 }}
8667 : },
8668 : {
8669 : "BDEV_NVME_IO_DONE", TRACE_BDEV_NVME_IO_DONE,
8670 : OWNER_TYPE_NONE, OBJECT_BDEV_NVME_IO, 0,
8671 : {{ "ctx", SPDK_TRACE_ARG_TYPE_PTR, 8 }}
8672 : }
8673 : };
8674 :
8675 :
8676 0 : spdk_trace_register_object(OBJECT_BDEV_NVME_IO, 'N');
8677 0 : spdk_trace_register_description_ext(opts, SPDK_COUNTOF(opts));
8678 0 : spdk_trace_tpoint_register_relation(TRACE_NVME_PCIE_SUBMIT, OBJECT_BDEV_NVME_IO, 0);
8679 0 : spdk_trace_tpoint_register_relation(TRACE_NVME_TCP_SUBMIT, OBJECT_BDEV_NVME_IO, 0);
8680 0 : spdk_trace_tpoint_register_relation(TRACE_NVME_PCIE_COMPLETE, OBJECT_BDEV_NVME_IO, 0);
8681 0 : spdk_trace_tpoint_register_relation(TRACE_NVME_TCP_COMPLETE, OBJECT_BDEV_NVME_IO, 0);
8682 0 : }
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