Line data Source code
1 : /* SPDX-License-Identifier: BSD-3-Clause
2 : * Copyright (C) 2016 Intel Corporation. All rights reserved.
3 : * Copyright (c) 2019 Mellanox Technologies LTD. All rights reserved.
4 : * Copyright (c) 2021 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
5 : */
6 :
7 : #ifndef __NVMF_INTERNAL_H__
8 : #define __NVMF_INTERNAL_H__
9 :
10 : #include "spdk/stdinc.h"
11 :
12 : #include "spdk/keyring.h"
13 : #include "spdk/likely.h"
14 : #include "spdk/nvmf.h"
15 : #include "spdk/nvmf_cmd.h"
16 : #include "spdk/nvmf_transport.h"
17 : #include "spdk/nvmf_spec.h"
18 : #include "spdk/assert.h"
19 : #include "spdk/bdev.h"
20 : #include "spdk/queue.h"
21 : #include "spdk/util.h"
22 : #include "spdk/thread.h"
23 : #include "spdk/tree.h"
24 : #include "spdk/bit_array.h"
25 :
26 : /* The spec reserves cntlid values in the range FFF0h to FFFFh. */
27 : #define NVMF_MIN_CNTLID 1
28 : #define NVMF_MAX_CNTLID 0xFFEF
29 :
30 : enum spdk_nvmf_tgt_state {
31 : NVMF_TGT_IDLE = 0,
32 : NVMF_TGT_RUNNING,
33 : NVMF_TGT_PAUSING,
34 : NVMF_TGT_PAUSED,
35 : NVMF_TGT_RESUMING,
36 : };
37 :
38 : enum spdk_nvmf_subsystem_state {
39 : SPDK_NVMF_SUBSYSTEM_INACTIVE = 0,
40 : SPDK_NVMF_SUBSYSTEM_ACTIVATING,
41 : SPDK_NVMF_SUBSYSTEM_ACTIVE,
42 : SPDK_NVMF_SUBSYSTEM_PAUSING,
43 : SPDK_NVMF_SUBSYSTEM_PAUSED,
44 : SPDK_NVMF_SUBSYSTEM_RESUMING,
45 : SPDK_NVMF_SUBSYSTEM_DEACTIVATING,
46 : SPDK_NVMF_SUBSYSTEM_NUM_STATES,
47 : };
48 :
49 : RB_HEAD(subsystem_tree, spdk_nvmf_subsystem);
50 :
51 : struct spdk_nvmf_tgt {
52 : char name[NVMF_TGT_NAME_MAX_LENGTH];
53 :
54 : pthread_mutex_t mutex;
55 :
56 : uint64_t discovery_genctr;
57 :
58 : uint32_t max_subsystems;
59 :
60 : uint32_t discovery_filter;
61 :
62 : enum spdk_nvmf_tgt_state state;
63 :
64 : struct spdk_bit_array *subsystem_ids;
65 :
66 : struct subsystem_tree subsystems;
67 :
68 : TAILQ_HEAD(, spdk_nvmf_transport) transports;
69 : TAILQ_HEAD(, spdk_nvmf_poll_group) poll_groups;
70 : TAILQ_HEAD(, spdk_nvmf_referral) referrals;
71 :
72 : /* Used for round-robin assignment of connections to poll groups */
73 : struct spdk_nvmf_poll_group *next_poll_group;
74 :
75 : spdk_nvmf_tgt_destroy_done_fn *destroy_cb_fn;
76 : void *destroy_cb_arg;
77 :
78 : uint16_t crdt[3];
79 : uint16_t num_poll_groups;
80 :
81 : /* Allowed DH-HMAC-CHAP digests/dhgroups */
82 : uint32_t dhchap_digests;
83 : uint32_t dhchap_dhgroups;
84 :
85 : TAILQ_ENTRY(spdk_nvmf_tgt) link;
86 : };
87 :
88 : struct spdk_nvmf_host {
89 : char nqn[SPDK_NVMF_NQN_MAX_LEN + 1];
90 : struct spdk_key *dhchap_key;
91 : struct spdk_key *dhchap_ctrlr_key;
92 : TAILQ_ENTRY(spdk_nvmf_host) link;
93 : };
94 :
95 : struct spdk_nvmf_subsystem_listener {
96 : struct spdk_nvmf_subsystem *subsystem;
97 : spdk_nvmf_tgt_subsystem_listen_done_fn cb_fn;
98 : void *cb_arg;
99 : struct spdk_nvme_transport_id *trid;
100 : struct spdk_nvmf_transport *transport;
101 : enum spdk_nvme_ana_state *ana_state;
102 : uint64_t ana_state_change_count;
103 : uint16_t id;
104 : struct spdk_nvmf_listener_opts opts;
105 : TAILQ_ENTRY(spdk_nvmf_subsystem_listener) link;
106 : };
107 :
108 : struct spdk_nvmf_referral {
109 : /* Discovery Log Page Entry for this referral */
110 : struct spdk_nvmf_discovery_log_page_entry entry;
111 : /* Transport ID */
112 : struct spdk_nvme_transport_id trid;
113 : TAILQ_ENTRY(spdk_nvmf_referral) link;
114 : };
115 :
116 : struct spdk_nvmf_subsystem_pg_ns_info {
117 : struct spdk_io_channel *channel;
118 : struct spdk_uuid uuid;
119 : /* current reservation key, no reservation if the value is 0 */
120 : uint64_t crkey;
121 : /* reservation type */
122 : enum spdk_nvme_reservation_type rtype;
123 : /* Host ID which holds the reservation */
124 : struct spdk_uuid holder_id;
125 : /* Host ID for the registrants with the namespace */
126 : struct spdk_uuid reg_hostid[SPDK_NVMF_MAX_NUM_REGISTRANTS];
127 : uint64_t num_blocks;
128 : uint32_t anagrpid;
129 :
130 : /* I/O outstanding to this namespace */
131 : uint64_t io_outstanding;
132 : enum spdk_nvmf_subsystem_state state;
133 : };
134 :
135 : typedef void(*spdk_nvmf_poll_group_mod_done)(void *cb_arg, int status);
136 :
137 : struct spdk_nvmf_subsystem_poll_group {
138 : /* Array of namespace information for each namespace indexed by nsid - 1 */
139 : struct spdk_nvmf_subsystem_pg_ns_info *ns_info;
140 : uint32_t num_ns;
141 : enum spdk_nvmf_subsystem_state state;
142 :
143 : /* Number of ADMIN and FABRICS requests outstanding */
144 : uint64_t mgmt_io_outstanding;
145 : spdk_nvmf_poll_group_mod_done cb_fn;
146 : void *cb_arg;
147 :
148 : TAILQ_HEAD(, spdk_nvmf_request) queued;
149 : };
150 :
151 : struct spdk_nvmf_registrant {
152 : TAILQ_ENTRY(spdk_nvmf_registrant) link;
153 : struct spdk_uuid hostid;
154 : /* Registration key */
155 : uint64_t rkey;
156 : };
157 :
158 : struct spdk_nvmf_ns {
159 : uint32_t nsid;
160 : uint32_t anagrpid;
161 : struct spdk_nvmf_subsystem *subsystem;
162 : struct spdk_bdev *bdev;
163 : struct spdk_bdev_desc *desc;
164 : struct spdk_nvmf_ns_opts opts;
165 : /* reservation notification mask */
166 : uint32_t mask;
167 : /* generation code */
168 : uint32_t gen;
169 : /* registrants head */
170 : TAILQ_HEAD(, spdk_nvmf_registrant) registrants;
171 : /* current reservation key */
172 : uint64_t crkey;
173 : /* reservation type */
174 : enum spdk_nvme_reservation_type rtype;
175 : /* current reservation holder, only valid if reservation type can only have one holder */
176 : struct spdk_nvmf_registrant *holder;
177 : /* Persist Through Power Loss file which contains the persistent reservation */
178 : char *ptpl_file;
179 : /* Persist Through Power Loss feature is enabled */
180 : bool ptpl_activated;
181 : /* ZCOPY supported on bdev device */
182 : bool zcopy;
183 : /* Command Set Identifier */
184 : enum spdk_nvme_csi csi;
185 : /* Make namespace visible to controllers of these hosts */
186 : TAILQ_HEAD(, spdk_nvmf_host) hosts;
187 : /* Namespace is always visible to all controllers */
188 : bool always_visible;
189 : /* Namespace id of the underlying device, used for passthrough commands */
190 : uint32_t passthru_nsid;
191 : };
192 :
193 : /*
194 : * NVMf reservation notification log page.
195 : */
196 : struct spdk_nvmf_reservation_log {
197 : struct spdk_nvme_reservation_notification_log log;
198 : TAILQ_ENTRY(spdk_nvmf_reservation_log) link;
199 : struct spdk_nvmf_ctrlr *ctrlr;
200 : };
201 :
202 : /*
203 : * NVMf async event completion.
204 : */
205 : struct spdk_nvmf_async_event_completion {
206 : union spdk_nvme_async_event_completion event;
207 : STAILQ_ENTRY(spdk_nvmf_async_event_completion) link;
208 : };
209 :
210 : /*
211 : * This structure represents an NVMe-oF controller,
212 : * which is like a "session" in networking terms.
213 : */
214 : struct spdk_nvmf_ctrlr {
215 : uint16_t cntlid;
216 : char hostnqn[SPDK_NVMF_NQN_MAX_LEN + 1];
217 : struct spdk_nvmf_subsystem *subsys;
218 : struct spdk_bit_array *visible_ns;
219 :
220 : struct spdk_nvmf_ctrlr_data cdata;
221 :
222 : struct spdk_nvmf_registers vcprop;
223 :
224 : struct spdk_nvmf_ctrlr_feat feat;
225 :
226 : struct spdk_nvmf_qpair *admin_qpair;
227 : struct spdk_thread *thread;
228 : struct spdk_bit_array *qpair_mask;
229 :
230 : const struct spdk_nvmf_subsystem_listener *listener;
231 :
232 : struct spdk_nvmf_request *aer_req[SPDK_NVMF_MAX_ASYNC_EVENTS];
233 : STAILQ_HEAD(, spdk_nvmf_async_event_completion) async_events;
234 : uint64_t notice_aen_mask;
235 : uint8_t nr_aer_reqs;
236 : struct spdk_uuid hostid;
237 :
238 : uint32_t association_timeout; /* in milliseconds */
239 : uint16_t changed_ns_list_count;
240 : struct spdk_nvme_ns_list changed_ns_list;
241 : uint64_t log_page_count;
242 : uint8_t num_avail_log_pages;
243 : TAILQ_HEAD(log_page_head, spdk_nvmf_reservation_log) log_head;
244 :
245 : /* Time to trigger keep-alive--poller_time = now_tick + period */
246 : uint64_t last_keep_alive_tick;
247 : struct spdk_poller *keep_alive_poller;
248 :
249 : struct spdk_poller *association_timer;
250 :
251 : struct spdk_poller *cc_timer;
252 : uint64_t cc_timeout_tsc;
253 : struct spdk_poller *cc_timeout_timer;
254 :
255 : bool dif_insert_or_strip;
256 : bool in_destruct;
257 : bool disconnect_in_progress;
258 : /* valid only when disconnect_in_progress is true */
259 : bool disconnect_is_shn;
260 : bool acre_enabled;
261 : bool dynamic_ctrlr;
262 : /* LBA Format Extension Enabled (LBAFEE) */
263 : bool lbafee_enabled;
264 :
265 : TAILQ_ENTRY(spdk_nvmf_ctrlr) link;
266 : };
267 :
268 : #define NVMF_MAX_LISTENERS_PER_SUBSYSTEM 16
269 :
270 : struct nvmf_subsystem_state_change_ctx {
271 : struct spdk_nvmf_subsystem *subsystem;
272 : uint16_t nsid;
273 :
274 : enum spdk_nvmf_subsystem_state original_state;
275 : enum spdk_nvmf_subsystem_state requested_state;
276 : int status;
277 : struct spdk_thread *thread;
278 :
279 : spdk_nvmf_subsystem_state_change_done cb_fn;
280 : void *cb_arg;
281 : TAILQ_ENTRY(nvmf_subsystem_state_change_ctx) link;
282 : };
283 :
284 : struct spdk_nvmf_subsystem {
285 : struct spdk_thread *thread;
286 :
287 : uint32_t id;
288 :
289 : enum spdk_nvmf_subsystem_state state;
290 : enum spdk_nvmf_subtype subtype;
291 :
292 : uint16_t next_cntlid;
293 : struct {
294 : uint8_t allow_any_listener : 1;
295 : uint8_t ana_reporting : 1;
296 : uint8_t reserved : 6;
297 : } flags;
298 :
299 : /* Protected against concurrent access by ->mutex */
300 : bool allow_any_host;
301 :
302 : bool destroying;
303 : bool async_destroy;
304 :
305 : /* FDP related fields */
306 : bool fdp_supported;
307 :
308 : /* Zoned storage related fields */
309 : uint64_t max_zone_append_size_kib;
310 :
311 : struct spdk_nvmf_tgt *tgt;
312 : RB_ENTRY(spdk_nvmf_subsystem) link;
313 :
314 : /* Array of pointers to namespaces of size max_nsid indexed by nsid - 1 */
315 : struct spdk_nvmf_ns **ns;
316 : uint32_t max_nsid;
317 :
318 : uint16_t min_cntlid;
319 : uint16_t max_cntlid;
320 :
321 : uint64_t max_discard_size_kib;
322 : uint64_t max_write_zeroes_size_kib;
323 :
324 : TAILQ_HEAD(, spdk_nvmf_ctrlr) ctrlrs;
325 :
326 : /* This mutex is used to protect fields that aren't touched on the I/O path (e.g. it's
327 : * needed for handling things like the CONNECT command) instead of requiring the subsystem
328 : * to be paused. It makes it possible to modify those fields (e.g. add/remove hosts)
329 : * without affecting outstanding I/O requests.
330 : */
331 : pthread_mutex_t mutex;
332 : /* Protected against concurrent access by ->mutex */
333 : TAILQ_HEAD(, spdk_nvmf_host) hosts;
334 : TAILQ_HEAD(, spdk_nvmf_subsystem_listener) listeners;
335 : struct spdk_bit_array *used_listener_ids;
336 :
337 : TAILQ_ENTRY(spdk_nvmf_subsystem) entries;
338 :
339 : nvmf_subsystem_destroy_cb async_destroy_cb;
340 : void *async_destroy_cb_arg;
341 :
342 : char sn[SPDK_NVME_CTRLR_SN_LEN + 1];
343 : char mn[SPDK_NVME_CTRLR_MN_LEN + 1];
344 : char subnqn[SPDK_NVMF_NQN_MAX_LEN + 1];
345 :
346 : /* Array of namespace count per ANA group of size max_nsid indexed anagrpid - 1
347 : * It will be enough for ANA group to use the same size as namespaces.
348 : */
349 : uint32_t *ana_group;
350 : /* Queue of a state change requests */
351 : TAILQ_HEAD(, nvmf_subsystem_state_change_ctx) state_changes;
352 : /* In-band authentication sequence number, protected by ->mutex */
353 : uint32_t auth_seqnum;
354 : bool passthrough;
355 : };
356 :
357 : static int
358 1 : subsystem_cmp(struct spdk_nvmf_subsystem *subsystem1, struct spdk_nvmf_subsystem *subsystem2)
359 : {
360 1 : return strncmp(subsystem1->subnqn, subsystem2->subnqn, sizeof(subsystem1->subnqn));
361 : }
362 :
363 175 : RB_GENERATE_STATIC(subsystem_tree, spdk_nvmf_subsystem, link, subsystem_cmp);
364 :
365 : int nvmf_poll_group_update_subsystem(struct spdk_nvmf_poll_group *group,
366 : struct spdk_nvmf_subsystem *subsystem);
367 : int nvmf_poll_group_add_subsystem(struct spdk_nvmf_poll_group *group,
368 : struct spdk_nvmf_subsystem *subsystem,
369 : spdk_nvmf_poll_group_mod_done cb_fn, void *cb_arg);
370 : void nvmf_poll_group_remove_subsystem(struct spdk_nvmf_poll_group *group,
371 : struct spdk_nvmf_subsystem *subsystem, spdk_nvmf_poll_group_mod_done cb_fn, void *cb_arg);
372 : void nvmf_poll_group_pause_subsystem(struct spdk_nvmf_poll_group *group,
373 : struct spdk_nvmf_subsystem *subsystem,
374 : uint32_t nsid,
375 : spdk_nvmf_poll_group_mod_done cb_fn, void *cb_arg);
376 : void nvmf_poll_group_resume_subsystem(struct spdk_nvmf_poll_group *group,
377 : struct spdk_nvmf_subsystem *subsystem, spdk_nvmf_poll_group_mod_done cb_fn, void *cb_arg);
378 :
379 : void nvmf_get_discovery_log_page(struct spdk_nvmf_tgt *tgt, const char *hostnqn, struct iovec *iov,
380 : uint32_t iovcnt, uint64_t offset, uint32_t length,
381 : struct spdk_nvme_transport_id *cmd_source_trid);
382 :
383 : void nvmf_ctrlr_destruct(struct spdk_nvmf_ctrlr *ctrlr);
384 : int nvmf_ctrlr_process_admin_cmd(struct spdk_nvmf_request *req);
385 : int nvmf_ctrlr_process_io_cmd(struct spdk_nvmf_request *req);
386 : bool nvmf_ctrlr_dsm_supported(struct spdk_nvmf_ctrlr *ctrlr);
387 : bool nvmf_ctrlr_write_zeroes_supported(struct spdk_nvmf_ctrlr *ctrlr);
388 : bool nvmf_ctrlr_copy_supported(struct spdk_nvmf_ctrlr *ctrlr);
389 : void nvmf_ctrlr_ns_changed(struct spdk_nvmf_ctrlr *ctrlr, uint32_t nsid);
390 : bool nvmf_ctrlr_use_zcopy(struct spdk_nvmf_request *req);
391 :
392 : void nvmf_bdev_ctrlr_identify_ns(struct spdk_nvmf_ns *ns, struct spdk_nvme_ns_data *nsdata,
393 : bool dif_insert_or_strip);
394 : void nvmf_bdev_ctrlr_identify_iocs_nvm(struct spdk_nvmf_ns *ns,
395 : struct spdk_nvme_nvm_ns_data *nsdata_nvm);
396 : int nvmf_bdev_ctrlr_read_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
397 : struct spdk_io_channel *ch, struct spdk_nvmf_request *req);
398 : int nvmf_bdev_ctrlr_write_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
399 : struct spdk_io_channel *ch, struct spdk_nvmf_request *req);
400 : int nvmf_bdev_ctrlr_compare_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
401 : struct spdk_io_channel *ch, struct spdk_nvmf_request *req);
402 : int nvmf_bdev_ctrlr_compare_and_write_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
403 : struct spdk_io_channel *ch, struct spdk_nvmf_request *cmp_req, struct spdk_nvmf_request *write_req);
404 : int nvmf_bdev_ctrlr_write_zeroes_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
405 : struct spdk_io_channel *ch, struct spdk_nvmf_request *req);
406 : int nvmf_bdev_ctrlr_flush_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
407 : struct spdk_io_channel *ch, struct spdk_nvmf_request *req);
408 : int nvmf_bdev_ctrlr_dsm_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
409 : struct spdk_io_channel *ch, struct spdk_nvmf_request *req);
410 : int nvmf_bdev_ctrlr_copy_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
411 : struct spdk_io_channel *ch, struct spdk_nvmf_request *req);
412 : int nvmf_bdev_ctrlr_nvme_passthru_io(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
413 : struct spdk_io_channel *ch, struct spdk_nvmf_request *req);
414 : bool nvmf_bdev_ctrlr_get_dif_ctx(struct spdk_bdev_desc *desc, struct spdk_nvme_cmd *cmd,
415 : struct spdk_dif_ctx *dif_ctx);
416 : bool nvmf_bdev_zcopy_enabled(struct spdk_bdev *bdev);
417 :
418 : int nvmf_subsystem_add_ctrlr(struct spdk_nvmf_subsystem *subsystem,
419 : struct spdk_nvmf_ctrlr *ctrlr);
420 : void nvmf_subsystem_remove_ctrlr(struct spdk_nvmf_subsystem *subsystem,
421 : struct spdk_nvmf_ctrlr *ctrlr);
422 : void nvmf_subsystem_remove_all_listeners(struct spdk_nvmf_subsystem *subsystem,
423 : bool stop);
424 : struct spdk_nvmf_ctrlr *nvmf_subsystem_get_ctrlr(struct spdk_nvmf_subsystem *subsystem,
425 : uint16_t cntlid);
426 : bool nvmf_subsystem_host_auth_required(struct spdk_nvmf_subsystem *subsystem, const char *hostnqn);
427 : enum nvmf_auth_key_type {
428 : NVMF_AUTH_KEY_HOST,
429 : NVMF_AUTH_KEY_CTRLR,
430 : };
431 : struct spdk_key *nvmf_subsystem_get_dhchap_key(struct spdk_nvmf_subsystem *subsys, const char *nqn,
432 : enum nvmf_auth_key_type type);
433 : struct spdk_nvmf_subsystem_listener *nvmf_subsystem_find_listener(
434 : struct spdk_nvmf_subsystem *subsystem,
435 : const struct spdk_nvme_transport_id *trid);
436 : bool nvmf_subsystem_zone_append_supported(struct spdk_nvmf_subsystem *subsystem);
437 : struct spdk_nvmf_listener *nvmf_transport_find_listener(
438 : struct spdk_nvmf_transport *transport,
439 : const struct spdk_nvme_transport_id *trid);
440 : void nvmf_transport_dump_opts(struct spdk_nvmf_transport *transport, struct spdk_json_write_ctx *w,
441 : bool named);
442 : void nvmf_transport_listen_dump_trid(const struct spdk_nvme_transport_id *trid,
443 : struct spdk_json_write_ctx *w);
444 :
445 : int nvmf_ctrlr_async_event_ns_notice(struct spdk_nvmf_ctrlr *ctrlr);
446 : int nvmf_ctrlr_async_event_ana_change_notice(struct spdk_nvmf_ctrlr *ctrlr);
447 : void nvmf_ctrlr_async_event_discovery_log_change_notice(void *ctx);
448 : void nvmf_ctrlr_async_event_reservation_notification(struct spdk_nvmf_ctrlr *ctrlr);
449 :
450 : void nvmf_ns_reservation_request(void *ctx);
451 : void nvmf_ctrlr_reservation_notice_log(struct spdk_nvmf_ctrlr *ctrlr,
452 : struct spdk_nvmf_ns *ns,
453 : enum spdk_nvme_reservation_notification_log_page_type type);
454 :
455 : bool nvmf_ns_is_ptpl_capable(const struct spdk_nvmf_ns *ns);
456 :
457 : static inline struct spdk_nvmf_host *
458 43 : nvmf_ns_find_host(struct spdk_nvmf_ns *ns, const char *hostnqn)
459 : {
460 43 : struct spdk_nvmf_host *host = NULL;
461 :
462 46 : TAILQ_FOREACH(host, &ns->hosts, link) {
463 11 : if (strcmp(hostnqn, host->nqn) == 0) {
464 8 : return host;
465 : }
466 3 : }
467 :
468 35 : return NULL;
469 43 : }
470 :
471 : /*
472 : * Abort zero-copy requests that already got the buffer (received zcopy_start cb), but haven't
473 : * started zcopy_end. These requests are kept on the outstanding queue, but are not waiting for a
474 : * completion from the bdev layer, so, when a qpair is being disconnected, we need to kick them to
475 : * force their completion.
476 : */
477 : void nvmf_qpair_abort_pending_zcopy_reqs(struct spdk_nvmf_qpair *qpair);
478 :
479 : /*
480 : * Free aer simply frees the rdma resources for the aer without informing the host.
481 : * This function should be called when deleting a qpair when one wants to make sure
482 : * the qpair is completely empty before freeing the request. The reason we free the
483 : * AER without sending a completion is to prevent the host from sending another AER.
484 : */
485 : void nvmf_qpair_free_aer(struct spdk_nvmf_qpair *qpair);
486 :
487 : int nvmf_ctrlr_abort_request(struct spdk_nvmf_request *req);
488 :
489 : void nvmf_ctrlr_set_fatal_status(struct spdk_nvmf_ctrlr *ctrlr);
490 :
491 : static inline bool
492 73 : nvmf_ctrlr_ns_is_visible(struct spdk_nvmf_ctrlr *ctrlr, uint32_t nsid)
493 : {
494 73 : assert(nsid > 0 && nsid <= ctrlr->subsys->max_nsid);
495 73 : return spdk_bit_array_get(ctrlr->visible_ns, nsid - 1);
496 : }
497 :
498 : static inline void
499 9 : nvmf_ctrlr_ns_set_visible(struct spdk_nvmf_ctrlr *ctrlr, uint32_t nsid, bool visible)
500 : {
501 9 : assert(nsid > 0 && nsid <= ctrlr->subsys->max_nsid);
502 9 : if (visible) {
503 5 : spdk_bit_array_set(ctrlr->visible_ns, nsid - 1);
504 5 : } else {
505 4 : spdk_bit_array_clear(ctrlr->visible_ns, nsid - 1);
506 : }
507 9 : }
508 :
509 : static inline struct spdk_nvmf_ns *
510 77 : _nvmf_subsystem_get_ns(struct spdk_nvmf_subsystem *subsystem, uint32_t nsid)
511 : {
512 : /* NOTE: This implicitly also checks for 0, since 0 - 1 wraps around to UINT32_MAX. */
513 77 : if (spdk_unlikely(nsid - 1 >= subsystem->max_nsid)) {
514 22 : return NULL;
515 : }
516 :
517 55 : return subsystem->ns[nsid - 1];
518 77 : }
519 :
520 : static inline struct spdk_nvmf_ns *
521 49 : nvmf_ctrlr_get_ns(struct spdk_nvmf_ctrlr *ctrlr, uint32_t nsid)
522 : {
523 49 : struct spdk_nvmf_subsystem *subsystem = ctrlr->subsys;
524 49 : struct spdk_nvmf_ns *ns = _nvmf_subsystem_get_ns(subsystem, nsid);
525 :
526 49 : return ns && nvmf_ctrlr_ns_is_visible(ctrlr, nsid) ? ns : NULL;
527 49 : }
528 :
529 : static inline bool
530 313 : nvmf_qpair_is_admin_queue(struct spdk_nvmf_qpair *qpair)
531 : {
532 313 : return qpair->qid == 0;
533 : }
534 :
535 : void nvmf_qpair_set_state(struct spdk_nvmf_qpair *qpair, enum spdk_nvmf_qpair_state state);
536 :
537 : int nvmf_qpair_auth_init(struct spdk_nvmf_qpair *qpair);
538 : void nvmf_qpair_auth_destroy(struct spdk_nvmf_qpair *qpair);
539 : void nvmf_qpair_auth_dump(struct spdk_nvmf_qpair *qpair, struct spdk_json_write_ctx *w);
540 :
541 : int nvmf_auth_request_exec(struct spdk_nvmf_request *req);
542 : bool nvmf_auth_is_supported(void);
543 :
544 : static inline bool
545 27 : nvmf_request_is_fabric_connect(struct spdk_nvmf_request *req)
546 : {
547 45 : return req->cmd->nvmf_cmd.opcode == SPDK_NVME_OPC_FABRIC &&
548 18 : req->cmd->nvmf_cmd.fctype == SPDK_NVMF_FABRIC_COMMAND_CONNECT;
549 : }
550 :
551 : /*
552 : * Tests whether a given string represents a valid NQN.
553 : */
554 : bool nvmf_nqn_is_valid(const char *nqn);
555 :
556 : /*
557 : * Tests whether a given NQN describes a discovery subsystem.
558 : */
559 : bool nvmf_nqn_is_discovery(const char *nqn);
560 :
561 : /**
562 : * Initiates a zcopy start operation
563 : *
564 : * \param bdev The \ref spdk_bdev
565 : * \param desc The \ref spdk_bdev_desc
566 : * \param ch The \ref spdk_io_channel
567 : * \param req The \ref spdk_nvmf_request passed to the bdev for processing
568 : *
569 : * \return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE if the command was completed immediately or
570 : * SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS if the command was submitted and will be
571 : * completed asynchronously. Asynchronous completions are notified through
572 : * spdk_nvmf_request_complete().
573 : */
574 : int nvmf_bdev_ctrlr_zcopy_start(struct spdk_bdev *bdev,
575 : struct spdk_bdev_desc *desc,
576 : struct spdk_io_channel *ch,
577 : struct spdk_nvmf_request *req);
578 :
579 : /**
580 : * Ends a zcopy operation
581 : *
582 : * \param req The NVMe-oF request
583 : * \param commit Flag indicating whether the buffers should be committed
584 : */
585 : void nvmf_bdev_ctrlr_zcopy_end(struct spdk_nvmf_request *req, bool commit);
586 :
587 : /**
588 : * Publishes the mDNS PRR (Pull Registration Request) for the NVMe-oF target.
589 : *
590 : * \param tgt The NVMe-oF target
591 : *
592 : * \return 0 on success, negative errno on failure
593 : */
594 : int nvmf_publish_mdns_prr(struct spdk_nvmf_tgt *tgt);
595 :
596 : /**
597 : * Stops the mDNS PRR (Pull Registration Request) for the NVMe-oF target.
598 : *
599 : * \param tgt The NVMe-oF target
600 : */
601 : void nvmf_tgt_stop_mdns_prr(struct spdk_nvmf_tgt *tgt);
602 :
603 : /**
604 : * Updates the listener list in the mDNS PRR (Pull Registration Request) for the NVMe-oF target.
605 : *
606 : * \param tgt The NVMe-oF target
607 : *
608 : * \return 0 on success, negative errno on failure
609 : */
610 : int nvmf_tgt_update_mdns_prr(struct spdk_nvmf_tgt *tgt);
611 :
612 : static inline struct spdk_nvmf_transport_poll_group *
613 1 : nvmf_get_transport_poll_group(struct spdk_nvmf_poll_group *group,
614 : struct spdk_nvmf_transport *transport)
615 : {
616 1 : struct spdk_nvmf_transport_poll_group *tgroup;
617 :
618 1 : TAILQ_FOREACH(tgroup, &group->tgroups, link) {
619 0 : if (tgroup->transport == transport) {
620 0 : return tgroup;
621 : }
622 0 : }
623 :
624 1 : return NULL;
625 1 : }
626 :
627 : /**
628 : * Generates a new NVMF controller id
629 : *
630 : * \param subsystem The subsystem
631 : *
632 : * \return unique controller id or 0xFFFF when all controller ids are in use
633 : */
634 : uint16_t nvmf_subsystem_gen_cntlid(struct spdk_nvmf_subsystem *subsystem);
635 :
636 : #endif /* __NVMF_INTERNAL_H__ */
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