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Commit | Line | Data |
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a07b4970 CH |
1 | /* |
2 | * NVMe admin command implementation. | |
3 | * Copyright (c) 2015-2016 HGST, a Western Digital Company. | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms and conditions of the GNU General Public License, | |
7 | * version 2, as published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
13 | */ | |
14 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
15 | #include <linux/module.h> | |
b2d09103 IM |
16 | #include <linux/rculist.h> |
17 | ||
a07b4970 | 18 | #include <generated/utsrelease.h> |
2d79c7dc | 19 | #include <asm/unaligned.h> |
a07b4970 CH |
20 | #include "nvmet.h" |
21 | ||
22 | u32 nvmet_get_log_page_len(struct nvme_command *cmd) | |
23 | { | |
24 | u32 len = le16_to_cpu(cmd->get_log_page.numdu); | |
25 | ||
26 | len <<= 16; | |
27 | len += le16_to_cpu(cmd->get_log_page.numdl); | |
28 | /* NUMD is a 0's based value */ | |
29 | len += 1; | |
30 | len *= sizeof(u32); | |
31 | ||
32 | return len; | |
33 | } | |
34 | ||
2d79c7dc CK |
35 | static u16 nvmet_get_smart_log_nsid(struct nvmet_req *req, |
36 | struct nvme_smart_log *slog) | |
37 | { | |
38 | u16 status; | |
39 | struct nvmet_ns *ns; | |
40 | u64 host_reads, host_writes, data_units_read, data_units_written; | |
41 | ||
42 | status = NVME_SC_SUCCESS; | |
43 | ns = nvmet_find_namespace(req->sq->ctrl, req->cmd->get_log_page.nsid); | |
44 | if (!ns) { | |
45 | status = NVME_SC_INVALID_NS; | |
b38b9054 | 46 | pr_err("nvmet : Could not find namespace id : %d\n", |
2d79c7dc CK |
47 | le32_to_cpu(req->cmd->get_log_page.nsid)); |
48 | goto out; | |
49 | } | |
50 | ||
51 | host_reads = part_stat_read(ns->bdev->bd_part, ios[READ]); | |
52 | data_units_read = part_stat_read(ns->bdev->bd_part, sectors[READ]); | |
53 | host_writes = part_stat_read(ns->bdev->bd_part, ios[WRITE]); | |
54 | data_units_written = part_stat_read(ns->bdev->bd_part, sectors[WRITE]); | |
55 | ||
56 | put_unaligned_le64(host_reads, &slog->host_reads[0]); | |
57 | put_unaligned_le64(data_units_read, &slog->data_units_read[0]); | |
58 | put_unaligned_le64(host_writes, &slog->host_writes[0]); | |
59 | put_unaligned_le64(data_units_written, &slog->data_units_written[0]); | |
60 | nvmet_put_namespace(ns); | |
61 | out: | |
62 | return status; | |
63 | } | |
64 | ||
65 | static u16 nvmet_get_smart_log_all(struct nvmet_req *req, | |
66 | struct nvme_smart_log *slog) | |
67 | { | |
68 | u16 status; | |
69 | u64 host_reads = 0, host_writes = 0; | |
70 | u64 data_units_read = 0, data_units_written = 0; | |
71 | struct nvmet_ns *ns; | |
72 | struct nvmet_ctrl *ctrl; | |
73 | ||
74 | status = NVME_SC_SUCCESS; | |
75 | ctrl = req->sq->ctrl; | |
76 | ||
77 | rcu_read_lock(); | |
78 | list_for_each_entry_rcu(ns, &ctrl->subsys->namespaces, dev_link) { | |
79 | host_reads += part_stat_read(ns->bdev->bd_part, ios[READ]); | |
80 | data_units_read += | |
81 | part_stat_read(ns->bdev->bd_part, sectors[READ]); | |
82 | host_writes += part_stat_read(ns->bdev->bd_part, ios[WRITE]); | |
83 | data_units_written += | |
84 | part_stat_read(ns->bdev->bd_part, sectors[WRITE]); | |
85 | ||
86 | } | |
87 | rcu_read_unlock(); | |
88 | ||
89 | put_unaligned_le64(host_reads, &slog->host_reads[0]); | |
90 | put_unaligned_le64(data_units_read, &slog->data_units_read[0]); | |
91 | put_unaligned_le64(host_writes, &slog->host_writes[0]); | |
92 | put_unaligned_le64(data_units_written, &slog->data_units_written[0]); | |
93 | ||
94 | return status; | |
95 | } | |
96 | ||
97 | static u16 nvmet_get_smart_log(struct nvmet_req *req, | |
98 | struct nvme_smart_log *slog) | |
99 | { | |
100 | u16 status; | |
101 | ||
102 | WARN_ON(req == NULL || slog == NULL); | |
5ac5fcc6 | 103 | if (req->cmd->get_log_page.nsid == cpu_to_le32(0xFFFFFFFF)) |
2d79c7dc CK |
104 | status = nvmet_get_smart_log_all(req, slog); |
105 | else | |
106 | status = nvmet_get_smart_log_nsid(req, slog); | |
107 | return status; | |
108 | } | |
109 | ||
a07b4970 CH |
110 | static void nvmet_execute_get_log_page(struct nvmet_req *req) |
111 | { | |
2d79c7dc | 112 | struct nvme_smart_log *smart_log; |
a07b4970 CH |
113 | size_t data_len = nvmet_get_log_page_len(req->cmd); |
114 | void *buf; | |
115 | u16 status = 0; | |
116 | ||
117 | buf = kzalloc(data_len, GFP_KERNEL); | |
118 | if (!buf) { | |
119 | status = NVME_SC_INTERNAL; | |
120 | goto out; | |
121 | } | |
122 | ||
123 | switch (req->cmd->get_log_page.lid) { | |
2ca0786d | 124 | case NVME_LOG_ERROR: |
a07b4970 CH |
125 | /* |
126 | * We currently never set the More bit in the status field, | |
127 | * so all error log entries are invalid and can be zeroed out. | |
128 | * This is called a minum viable implementation (TM) of this | |
129 | * mandatory log page. | |
130 | */ | |
131 | break; | |
2ca0786d | 132 | case NVME_LOG_SMART: |
a07b4970 CH |
133 | /* |
134 | * XXX: fill out actual smart log | |
135 | * | |
136 | * We might have a hard time coming up with useful values for | |
137 | * many of the fields, and even when we have useful data | |
138 | * available (e.g. units or commands read/written) those aren't | |
139 | * persistent over power loss. | |
140 | */ | |
2d79c7dc CK |
141 | if (data_len != sizeof(*smart_log)) { |
142 | status = NVME_SC_INTERNAL; | |
143 | goto err; | |
144 | } | |
145 | smart_log = buf; | |
146 | status = nvmet_get_smart_log(req, smart_log); | |
147 | if (status) { | |
148 | memset(buf, '\0', data_len); | |
149 | goto err; | |
150 | } | |
a07b4970 | 151 | break; |
2ca0786d | 152 | case NVME_LOG_FW_SLOT: |
a07b4970 CH |
153 | /* |
154 | * We only support a single firmware slot which always is | |
155 | * active, so we can zero out the whole firmware slot log and | |
156 | * still claim to fully implement this mandatory log page. | |
157 | */ | |
158 | break; | |
159 | default: | |
160 | BUG(); | |
161 | } | |
162 | ||
163 | status = nvmet_copy_to_sgl(req, 0, buf, data_len); | |
164 | ||
2d79c7dc | 165 | err: |
a07b4970 CH |
166 | kfree(buf); |
167 | out: | |
168 | nvmet_req_complete(req, status); | |
169 | } | |
170 | ||
42de82a8 MW |
171 | static void copy_and_pad(char *dst, int dst_len, const char *src, int src_len) |
172 | { | |
173 | int len = min(src_len, dst_len); | |
174 | ||
175 | memcpy(dst, src, len); | |
176 | if (dst_len > len) | |
177 | memset(dst + len, ' ', dst_len - len); | |
178 | } | |
179 | ||
a07b4970 CH |
180 | static void nvmet_execute_identify_ctrl(struct nvmet_req *req) |
181 | { | |
182 | struct nvmet_ctrl *ctrl = req->sq->ctrl; | |
183 | struct nvme_id_ctrl *id; | |
a07b4970 | 184 | u16 status = 0; |
42de82a8 | 185 | const char model[] = "Linux"; |
a07b4970 CH |
186 | |
187 | id = kzalloc(sizeof(*id), GFP_KERNEL); | |
188 | if (!id) { | |
189 | status = NVME_SC_INTERNAL; | |
190 | goto out; | |
191 | } | |
192 | ||
193 | /* XXX: figure out how to assign real vendors IDs. */ | |
194 | id->vid = 0; | |
195 | id->ssvid = 0; | |
196 | ||
42de82a8 MW |
197 | bin2hex(id->sn, &ctrl->subsys->serial, |
198 | min(sizeof(ctrl->subsys->serial), sizeof(id->sn) / 2)); | |
199 | copy_and_pad(id->mn, sizeof(id->mn), model, sizeof(model) - 1); | |
200 | copy_and_pad(id->fr, sizeof(id->fr), UTS_RELEASE, strlen(UTS_RELEASE)); | |
a07b4970 CH |
201 | |
202 | memset(id->mn, ' ', sizeof(id->mn)); | |
203 | strncpy((char *)id->mn, "Linux", sizeof(id->mn)); | |
204 | ||
205 | memset(id->fr, ' ', sizeof(id->fr)); | |
206 | strncpy((char *)id->fr, UTS_RELEASE, sizeof(id->fr)); | |
207 | ||
208 | id->rab = 6; | |
209 | ||
210 | /* | |
211 | * XXX: figure out how we can assign a IEEE OUI, but until then | |
212 | * the safest is to leave it as zeroes. | |
213 | */ | |
214 | ||
215 | /* we support multiple ports and multiples hosts: */ | |
a446c084 | 216 | id->cmic = (1 << 0) | (1 << 1); |
a07b4970 CH |
217 | |
218 | /* no limit on data transfer sizes for now */ | |
219 | id->mdts = 0; | |
220 | id->cntlid = cpu_to_le16(ctrl->cntlid); | |
221 | id->ver = cpu_to_le32(ctrl->subsys->ver); | |
222 | ||
223 | /* XXX: figure out what to do about RTD3R/RTD3 */ | |
224 | id->oaes = cpu_to_le32(1 << 8); | |
225 | id->ctratt = cpu_to_le32(1 << 0); | |
226 | ||
227 | id->oacs = 0; | |
228 | ||
229 | /* | |
230 | * We don't really have a practical limit on the number of abort | |
231 | * comands. But we don't do anything useful for abort either, so | |
232 | * no point in allowing more abort commands than the spec requires. | |
233 | */ | |
234 | id->acl = 3; | |
235 | ||
236 | id->aerl = NVMET_ASYNC_EVENTS - 1; | |
237 | ||
238 | /* first slot is read-only, only one slot supported */ | |
239 | id->frmw = (1 << 0) | (1 << 1); | |
240 | id->lpa = (1 << 0) | (1 << 2); | |
241 | id->elpe = NVMET_ERROR_LOG_SLOTS - 1; | |
242 | id->npss = 0; | |
243 | ||
244 | /* We support keep-alive timeout in granularity of seconds */ | |
245 | id->kas = cpu_to_le16(NVMET_KAS); | |
246 | ||
247 | id->sqes = (0x6 << 4) | 0x6; | |
248 | id->cqes = (0x4 << 4) | 0x4; | |
249 | ||
250 | /* no enforcement soft-limit for maxcmd - pick arbitrary high value */ | |
251 | id->maxcmd = cpu_to_le16(NVMET_MAX_CMD); | |
252 | ||
253 | id->nn = cpu_to_le32(ctrl->subsys->max_nsid); | |
d2629209 CK |
254 | id->oncs = cpu_to_le16(NVME_CTRL_ONCS_DSM | |
255 | NVME_CTRL_ONCS_WRITE_ZEROES); | |
a07b4970 CH |
256 | |
257 | /* XXX: don't report vwc if the underlying device is write through */ | |
258 | id->vwc = NVME_CTRL_VWC_PRESENT; | |
259 | ||
260 | /* | |
261 | * We can't support atomic writes bigger than a LBA without support | |
262 | * from the backend device. | |
263 | */ | |
264 | id->awun = 0; | |
265 | id->awupf = 0; | |
266 | ||
267 | id->sgls = cpu_to_le32(1 << 0); /* we always support SGLs */ | |
268 | if (ctrl->ops->has_keyed_sgls) | |
269 | id->sgls |= cpu_to_le32(1 << 2); | |
270 | if (ctrl->ops->sqe_inline_size) | |
271 | id->sgls |= cpu_to_le32(1 << 20); | |
272 | ||
273 | strcpy(id->subnqn, ctrl->subsys->subsysnqn); | |
274 | ||
275 | /* Max command capsule size is sqe + single page of in-capsule data */ | |
276 | id->ioccsz = cpu_to_le32((sizeof(struct nvme_command) + | |
277 | ctrl->ops->sqe_inline_size) / 16); | |
278 | /* Max response capsule size is cqe */ | |
279 | id->iorcsz = cpu_to_le32(sizeof(struct nvme_completion) / 16); | |
280 | ||
281 | id->msdbd = ctrl->ops->msdbd; | |
282 | ||
283 | /* | |
284 | * Meh, we don't really support any power state. Fake up the same | |
285 | * values that qemu does. | |
286 | */ | |
287 | id->psd[0].max_power = cpu_to_le16(0x9c4); | |
288 | id->psd[0].entry_lat = cpu_to_le32(0x10); | |
289 | id->psd[0].exit_lat = cpu_to_le32(0x4); | |
290 | ||
291 | status = nvmet_copy_to_sgl(req, 0, id, sizeof(*id)); | |
292 | ||
293 | kfree(id); | |
294 | out: | |
295 | nvmet_req_complete(req, status); | |
296 | } | |
297 | ||
298 | static void nvmet_execute_identify_ns(struct nvmet_req *req) | |
299 | { | |
300 | struct nvmet_ns *ns; | |
301 | struct nvme_id_ns *id; | |
302 | u16 status = 0; | |
303 | ||
304 | ns = nvmet_find_namespace(req->sq->ctrl, req->cmd->identify.nsid); | |
305 | if (!ns) { | |
306 | status = NVME_SC_INVALID_NS | NVME_SC_DNR; | |
307 | goto out; | |
308 | } | |
309 | ||
310 | id = kzalloc(sizeof(*id), GFP_KERNEL); | |
311 | if (!id) { | |
312 | status = NVME_SC_INTERNAL; | |
313 | goto out_put_ns; | |
314 | } | |
315 | ||
316 | /* | |
317 | * nuse = ncap = nsze isn't aways true, but we have no way to find | |
318 | * that out from the underlying device. | |
319 | */ | |
320 | id->ncap = id->nuse = id->nsze = | |
321 | cpu_to_le64(ns->size >> ns->blksize_shift); | |
322 | ||
323 | /* | |
324 | * We just provide a single LBA format that matches what the | |
325 | * underlying device reports. | |
326 | */ | |
327 | id->nlbaf = 0; | |
328 | id->flbas = 0; | |
329 | ||
330 | /* | |
331 | * Our namespace might always be shared. Not just with other | |
332 | * controllers, but also with any other user of the block device. | |
333 | */ | |
334 | id->nmic = (1 << 0); | |
335 | ||
336 | memcpy(&id->nguid, &ns->nguid, sizeof(uuid_le)); | |
337 | ||
338 | id->lbaf[0].ds = ns->blksize_shift; | |
339 | ||
340 | status = nvmet_copy_to_sgl(req, 0, id, sizeof(*id)); | |
341 | ||
342 | kfree(id); | |
343 | out_put_ns: | |
344 | nvmet_put_namespace(ns); | |
345 | out: | |
346 | nvmet_req_complete(req, status); | |
347 | } | |
348 | ||
349 | static void nvmet_execute_identify_nslist(struct nvmet_req *req) | |
350 | { | |
0add5e8e | 351 | static const int buf_size = NVME_IDENTIFY_DATA_SIZE; |
a07b4970 CH |
352 | struct nvmet_ctrl *ctrl = req->sq->ctrl; |
353 | struct nvmet_ns *ns; | |
354 | u32 min_nsid = le32_to_cpu(req->cmd->identify.nsid); | |
355 | __le32 *list; | |
356 | u16 status = 0; | |
357 | int i = 0; | |
358 | ||
359 | list = kzalloc(buf_size, GFP_KERNEL); | |
360 | if (!list) { | |
361 | status = NVME_SC_INTERNAL; | |
362 | goto out; | |
363 | } | |
364 | ||
365 | rcu_read_lock(); | |
366 | list_for_each_entry_rcu(ns, &ctrl->subsys->namespaces, dev_link) { | |
367 | if (ns->nsid <= min_nsid) | |
368 | continue; | |
369 | list[i++] = cpu_to_le32(ns->nsid); | |
370 | if (i == buf_size / sizeof(__le32)) | |
371 | break; | |
372 | } | |
373 | rcu_read_unlock(); | |
374 | ||
375 | status = nvmet_copy_to_sgl(req, 0, list, buf_size); | |
376 | ||
377 | kfree(list); | |
378 | out: | |
379 | nvmet_req_complete(req, status); | |
380 | } | |
381 | ||
637dc0f3 JT |
382 | static u16 nvmet_copy_ns_identifier(struct nvmet_req *req, u8 type, u8 len, |
383 | void *id, off_t *off) | |
384 | { | |
385 | struct nvme_ns_id_desc desc = { | |
386 | .nidt = type, | |
387 | .nidl = len, | |
388 | }; | |
389 | u16 status; | |
390 | ||
391 | status = nvmet_copy_to_sgl(req, *off, &desc, sizeof(desc)); | |
392 | if (status) | |
393 | return status; | |
394 | *off += sizeof(desc); | |
395 | ||
396 | status = nvmet_copy_to_sgl(req, *off, id, len); | |
397 | if (status) | |
398 | return status; | |
399 | *off += len; | |
400 | ||
401 | return 0; | |
402 | } | |
403 | ||
404 | static void nvmet_execute_identify_desclist(struct nvmet_req *req) | |
405 | { | |
406 | struct nvmet_ns *ns; | |
407 | u16 status = 0; | |
408 | off_t off = 0; | |
409 | ||
410 | ns = nvmet_find_namespace(req->sq->ctrl, req->cmd->identify.nsid); | |
411 | if (!ns) { | |
412 | status = NVME_SC_INVALID_NS | NVME_SC_DNR; | |
413 | goto out; | |
414 | } | |
415 | ||
416 | if (memchr_inv(&ns->uuid, 0, sizeof(ns->uuid))) { | |
417 | status = nvmet_copy_ns_identifier(req, NVME_NIDT_UUID, | |
418 | NVME_NIDT_UUID_LEN, | |
419 | &ns->uuid, &off); | |
420 | if (status) | |
421 | goto out_put_ns; | |
422 | } | |
423 | if (memchr_inv(ns->nguid, 0, sizeof(ns->nguid))) { | |
424 | status = nvmet_copy_ns_identifier(req, NVME_NIDT_NGUID, | |
425 | NVME_NIDT_NGUID_LEN, | |
426 | &ns->nguid, &off); | |
427 | if (status) | |
428 | goto out_put_ns; | |
429 | } | |
430 | ||
431 | if (sg_zero_buffer(req->sg, req->sg_cnt, NVME_IDENTIFY_DATA_SIZE - off, | |
432 | off) != NVME_IDENTIFY_DATA_SIZE - off) | |
433 | status = NVME_SC_INTERNAL | NVME_SC_DNR; | |
434 | out_put_ns: | |
435 | nvmet_put_namespace(ns); | |
436 | out: | |
437 | nvmet_req_complete(req, status); | |
438 | } | |
439 | ||
a07b4970 CH |
440 | /* |
441 | * A "mimimum viable" abort implementation: the command is mandatory in the | |
442 | * spec, but we are not required to do any useful work. We couldn't really | |
443 | * do a useful abort, so don't bother even with waiting for the command | |
444 | * to be exectuted and return immediately telling the command to abort | |
445 | * wasn't found. | |
446 | */ | |
447 | static void nvmet_execute_abort(struct nvmet_req *req) | |
448 | { | |
449 | nvmet_set_result(req, 1); | |
450 | nvmet_req_complete(req, 0); | |
451 | } | |
452 | ||
453 | static void nvmet_execute_set_features(struct nvmet_req *req) | |
454 | { | |
455 | struct nvmet_subsys *subsys = req->sq->ctrl->subsys; | |
456 | u32 cdw10 = le32_to_cpu(req->cmd->common.cdw10[0]); | |
a07b4970 CH |
457 | u32 val32; |
458 | u16 status = 0; | |
459 | ||
460 | switch (cdw10 & 0xf) { | |
461 | case NVME_FEAT_NUM_QUEUES: | |
462 | nvmet_set_result(req, | |
463 | (subsys->max_qid - 1) | ((subsys->max_qid - 1) << 16)); | |
464 | break; | |
465 | case NVME_FEAT_KATO: | |
6c73f949 | 466 | val32 = le32_to_cpu(req->cmd->common.cdw10[1]); |
a07b4970 CH |
467 | req->sq->ctrl->kato = DIV_ROUND_UP(val32, 1000); |
468 | nvmet_set_result(req, req->sq->ctrl->kato); | |
469 | break; | |
470 | default: | |
471 | status = NVME_SC_INVALID_FIELD | NVME_SC_DNR; | |
472 | break; | |
473 | } | |
474 | ||
475 | nvmet_req_complete(req, status); | |
476 | } | |
477 | ||
478 | static void nvmet_execute_get_features(struct nvmet_req *req) | |
479 | { | |
480 | struct nvmet_subsys *subsys = req->sq->ctrl->subsys; | |
481 | u32 cdw10 = le32_to_cpu(req->cmd->common.cdw10[0]); | |
482 | u16 status = 0; | |
483 | ||
484 | switch (cdw10 & 0xf) { | |
485 | /* | |
486 | * These features are mandatory in the spec, but we don't | |
487 | * have a useful way to implement them. We'll eventually | |
488 | * need to come up with some fake values for these. | |
489 | */ | |
490 | #if 0 | |
491 | case NVME_FEAT_ARBITRATION: | |
492 | break; | |
493 | case NVME_FEAT_POWER_MGMT: | |
494 | break; | |
495 | case NVME_FEAT_TEMP_THRESH: | |
496 | break; | |
497 | case NVME_FEAT_ERR_RECOVERY: | |
498 | break; | |
499 | case NVME_FEAT_IRQ_COALESCE: | |
500 | break; | |
501 | case NVME_FEAT_IRQ_CONFIG: | |
502 | break; | |
503 | case NVME_FEAT_WRITE_ATOMIC: | |
504 | break; | |
505 | case NVME_FEAT_ASYNC_EVENT: | |
506 | break; | |
507 | #endif | |
508 | case NVME_FEAT_VOLATILE_WC: | |
509 | nvmet_set_result(req, 1); | |
510 | break; | |
511 | case NVME_FEAT_NUM_QUEUES: | |
512 | nvmet_set_result(req, | |
513 | (subsys->max_qid-1) | ((subsys->max_qid-1) << 16)); | |
514 | break; | |
515 | case NVME_FEAT_KATO: | |
516 | nvmet_set_result(req, req->sq->ctrl->kato * 1000); | |
517 | break; | |
518 | default: | |
519 | status = NVME_SC_INVALID_FIELD | NVME_SC_DNR; | |
520 | break; | |
521 | } | |
522 | ||
523 | nvmet_req_complete(req, status); | |
524 | } | |
525 | ||
526 | static void nvmet_execute_async_event(struct nvmet_req *req) | |
527 | { | |
528 | struct nvmet_ctrl *ctrl = req->sq->ctrl; | |
529 | ||
530 | mutex_lock(&ctrl->lock); | |
531 | if (ctrl->nr_async_event_cmds >= NVMET_ASYNC_EVENTS) { | |
532 | mutex_unlock(&ctrl->lock); | |
533 | nvmet_req_complete(req, NVME_SC_ASYNC_LIMIT | NVME_SC_DNR); | |
534 | return; | |
535 | } | |
536 | ctrl->async_event_cmds[ctrl->nr_async_event_cmds++] = req; | |
537 | mutex_unlock(&ctrl->lock); | |
538 | ||
539 | schedule_work(&ctrl->async_event_work); | |
540 | } | |
541 | ||
542 | static void nvmet_execute_keep_alive(struct nvmet_req *req) | |
543 | { | |
544 | struct nvmet_ctrl *ctrl = req->sq->ctrl; | |
545 | ||
546 | pr_debug("ctrl %d update keep-alive timer for %d secs\n", | |
547 | ctrl->cntlid, ctrl->kato); | |
548 | ||
549 | mod_delayed_work(system_wq, &ctrl->ka_work, ctrl->kato * HZ); | |
550 | nvmet_req_complete(req, 0); | |
551 | } | |
552 | ||
64a0ca88 | 553 | u16 nvmet_parse_admin_cmd(struct nvmet_req *req) |
a07b4970 CH |
554 | { |
555 | struct nvme_command *cmd = req->cmd; | |
64a0ca88 | 556 | u16 ret; |
a07b4970 CH |
557 | |
558 | req->ns = NULL; | |
559 | ||
64a0ca88 PP |
560 | ret = nvmet_check_ctrl_status(req, cmd); |
561 | if (unlikely(ret)) | |
562 | return ret; | |
a07b4970 CH |
563 | |
564 | switch (cmd->common.opcode) { | |
565 | case nvme_admin_get_log_page: | |
566 | req->data_len = nvmet_get_log_page_len(cmd); | |
567 | ||
568 | switch (cmd->get_log_page.lid) { | |
2ca0786d MG |
569 | case NVME_LOG_ERROR: |
570 | case NVME_LOG_SMART: | |
571 | case NVME_LOG_FW_SLOT: | |
a07b4970 CH |
572 | req->execute = nvmet_execute_get_log_page; |
573 | return 0; | |
574 | } | |
575 | break; | |
576 | case nvme_admin_identify: | |
0add5e8e | 577 | req->data_len = NVME_IDENTIFY_DATA_SIZE; |
986994a2 | 578 | switch (cmd->identify.cns) { |
e9c9346e | 579 | case NVME_ID_CNS_NS: |
a07b4970 CH |
580 | req->execute = nvmet_execute_identify_ns; |
581 | return 0; | |
e9c9346e | 582 | case NVME_ID_CNS_CTRL: |
a07b4970 CH |
583 | req->execute = nvmet_execute_identify_ctrl; |
584 | return 0; | |
e9c9346e | 585 | case NVME_ID_CNS_NS_ACTIVE_LIST: |
a07b4970 CH |
586 | req->execute = nvmet_execute_identify_nslist; |
587 | return 0; | |
637dc0f3 JT |
588 | case NVME_ID_CNS_NS_DESC_LIST: |
589 | req->execute = nvmet_execute_identify_desclist; | |
590 | return 0; | |
a07b4970 CH |
591 | } |
592 | break; | |
593 | case nvme_admin_abort_cmd: | |
594 | req->execute = nvmet_execute_abort; | |
595 | req->data_len = 0; | |
596 | return 0; | |
597 | case nvme_admin_set_features: | |
598 | req->execute = nvmet_execute_set_features; | |
599 | req->data_len = 0; | |
600 | return 0; | |
601 | case nvme_admin_get_features: | |
602 | req->execute = nvmet_execute_get_features; | |
603 | req->data_len = 0; | |
604 | return 0; | |
605 | case nvme_admin_async_event: | |
606 | req->execute = nvmet_execute_async_event; | |
607 | req->data_len = 0; | |
608 | return 0; | |
609 | case nvme_admin_keep_alive: | |
610 | req->execute = nvmet_execute_keep_alive; | |
611 | req->data_len = 0; | |
612 | return 0; | |
613 | } | |
614 | ||
64a0ca88 PP |
615 | pr_err("unhandled cmd %d on qid %d\n", cmd->common.opcode, |
616 | req->sq->qid); | |
a07b4970 CH |
617 | return NVME_SC_INVALID_OPCODE | NVME_SC_DNR; |
618 | } |