xref: /spdk/lib/blob/request.c (revision 8a6ba58cb4eca120864040a2ff3eb27398153cc1)
1 /*-
2  *   BSD LICENSE
3  *
4  *   Copyright (c) Intel Corporation.
5  *   All rights reserved.
6  *
7  *   Redistribution and use in source and binary forms, with or without
8  *   modification, are permitted provided that the following conditions
9  *   are met:
10  *
11  *     * Redistributions of source code must retain the above copyright
12  *       notice, this list of conditions and the following disclaimer.
13  *     * Redistributions in binary form must reproduce the above copyright
14  *       notice, this list of conditions and the following disclaimer in
15  *       the documentation and/or other materials provided with the
16  *       distribution.
17  *     * Neither the name of Intel Corporation nor the names of its
18  *       contributors may be used to endorse or promote products derived
19  *       from this software without specific prior written permission.
20  *
21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32  */
33 
34 #include "spdk/stdinc.h"
35 
36 #include "blobstore.h"
37 #include "request.h"
38 
39 #include "spdk/io_channel.h"
40 #include "spdk/queue.h"
41 
42 #include "spdk_internal/log.h"
43 
44 void
45 spdk_bs_call_cpl(struct spdk_bs_cpl *cpl, int bserrno)
46 {
47 	switch (cpl->type) {
48 	case SPDK_BS_CPL_TYPE_BS_BASIC:
49 		cpl->u.bs_basic.cb_fn(cpl->u.bs_basic.cb_arg,
50 				      bserrno);
51 		break;
52 	case SPDK_BS_CPL_TYPE_BS_HANDLE:
53 		cpl->u.bs_handle.cb_fn(cpl->u.bs_handle.cb_arg,
54 				       cpl->u.bs_handle.bs,
55 				       bserrno);
56 		break;
57 	case SPDK_BS_CPL_TYPE_BLOB_BASIC:
58 		cpl->u.blob_basic.cb_fn(cpl->u.blob_basic.cb_arg,
59 					bserrno);
60 		break;
61 	case SPDK_BS_CPL_TYPE_BLOBID:
62 		cpl->u.blobid.cb_fn(cpl->u.blobid.cb_arg,
63 				    cpl->u.blobid.blobid,
64 				    bserrno);
65 		break;
66 	case SPDK_BS_CPL_TYPE_BLOB_HANDLE:
67 		cpl->u.blob_handle.cb_fn(cpl->u.blob_handle.cb_arg,
68 					 cpl->u.blob_handle.blob,
69 					 bserrno);
70 		break;
71 	case SPDK_BS_CPL_TYPE_NESTED_SEQUENCE:
72 		cpl->u.nested_seq.cb_fn(cpl->u.nested_seq.cb_arg,
73 					cpl->u.nested_seq.parent,
74 					bserrno);
75 		break;
76 	case SPDK_BS_CPL_TYPE_NONE:
77 		/* this completion's callback is handled elsewhere */
78 		break;
79 	}
80 }
81 
82 static void
83 spdk_bs_request_set_complete(struct spdk_bs_request_set *set)
84 {
85 	struct spdk_bs_cpl cpl = set->cpl;
86 	int bserrno = set->bserrno;
87 
88 	TAILQ_INSERT_TAIL(&set->channel->reqs, set, link);
89 
90 	spdk_bs_call_cpl(&cpl, bserrno);
91 }
92 
93 static void
94 spdk_bs_sequence_completion(struct spdk_io_channel *channel, void *cb_arg, int bserrno)
95 {
96 	struct spdk_bs_request_set *set = cb_arg;
97 
98 	set->bserrno = bserrno;
99 	set->u.sequence.cb_fn((spdk_bs_sequence_t *)set, set->u.sequence.cb_arg, bserrno);
100 }
101 
102 spdk_bs_sequence_t *
103 spdk_bs_sequence_start(struct spdk_io_channel *_channel,
104 		       struct spdk_bs_cpl *cpl)
105 {
106 	struct spdk_bs_channel		*channel;
107 	struct spdk_bs_request_set	*set;
108 
109 	channel = spdk_io_channel_get_ctx(_channel);
110 
111 	set = TAILQ_FIRST(&channel->reqs);
112 	if (!set) {
113 		return NULL;
114 	}
115 	TAILQ_REMOVE(&channel->reqs, set, link);
116 
117 	set->cpl = *cpl;
118 	set->bserrno = 0;
119 	set->channel = channel;
120 
121 	set->cb_args.cb_fn = spdk_bs_sequence_completion;
122 	set->cb_args.cb_arg = set;
123 	set->cb_args.channel = channel->dev_channel;
124 
125 	return (spdk_bs_sequence_t *)set;
126 }
127 
128 void
129 spdk_bs_sequence_read_bs_dev(spdk_bs_sequence_t *seq, struct spdk_bs_dev *bs_dev,
130 			     void *payload, uint64_t lba, uint32_t lba_count,
131 			     spdk_bs_sequence_cpl cb_fn, void *cb_arg)
132 {
133 	struct spdk_bs_request_set      *set = (struct spdk_bs_request_set *)seq;
134 	struct spdk_bs_channel       *channel = set->channel;
135 
136 	SPDK_DEBUGLOG(SPDK_LOG_BLOB_RW, "Reading %u blocks from LBA %lu\n", lba_count, lba);
137 
138 	set->u.sequence.cb_fn = cb_fn;
139 	set->u.sequence.cb_arg = cb_arg;
140 
141 	bs_dev->read(bs_dev, spdk_io_channel_from_ctx(channel), payload, lba, lba_count, &set->cb_args);
142 }
143 
144 void
145 spdk_bs_sequence_read_dev(spdk_bs_sequence_t *seq, void *payload,
146 			  uint64_t lba, uint32_t lba_count,
147 			  spdk_bs_sequence_cpl cb_fn, void *cb_arg)
148 {
149 	struct spdk_bs_request_set      *set = (struct spdk_bs_request_set *)seq;
150 	struct spdk_bs_channel       *channel = set->channel;
151 
152 	set->u.sequence.cb_fn = cb_fn;
153 	set->u.sequence.cb_arg = cb_arg;
154 
155 	channel->dev->read(channel->dev, channel->dev_channel, payload, lba, lba_count, &set->cb_args);
156 }
157 
158 void
159 spdk_bs_sequence_write_dev(spdk_bs_sequence_t *seq, void *payload,
160 			   uint64_t lba, uint32_t lba_count,
161 			   spdk_bs_sequence_cpl cb_fn, void *cb_arg)
162 {
163 	struct spdk_bs_request_set      *set = (struct spdk_bs_request_set *)seq;
164 	struct spdk_bs_channel       *channel = set->channel;
165 
166 	SPDK_DEBUGLOG(SPDK_LOG_BLOB_RW, "Writing %u blocks to LBA %lu\n", lba_count, lba);
167 
168 	set->u.sequence.cb_fn = cb_fn;
169 	set->u.sequence.cb_arg = cb_arg;
170 
171 	channel->dev->write(channel->dev, channel->dev_channel, payload, lba, lba_count,
172 			    &set->cb_args);
173 }
174 
175 void
176 spdk_bs_sequence_readv_bs_dev(spdk_bs_sequence_t *seq, struct spdk_bs_dev *bs_dev,
177 			      struct iovec *iov, int iovcnt, uint64_t lba, uint32_t lba_count,
178 			      spdk_bs_sequence_cpl cb_fn, void *cb_arg)
179 {
180 	struct spdk_bs_request_set      *set = (struct spdk_bs_request_set *)seq;
181 	struct spdk_bs_channel       *channel = set->channel;
182 
183 	SPDK_DEBUGLOG(SPDK_LOG_BLOB_RW, "Reading %u blocks from LBA %lu\n", lba_count, lba);
184 
185 	set->u.sequence.cb_fn = cb_fn;
186 	set->u.sequence.cb_arg = cb_arg;
187 
188 	bs_dev->readv(bs_dev, spdk_io_channel_from_ctx(channel), iov, iovcnt, lba, lba_count,
189 		      &set->cb_args);
190 }
191 
192 void
193 spdk_bs_sequence_readv_dev(spdk_bs_sequence_t *seq, struct iovec *iov, int iovcnt,
194 			   uint64_t lba, uint32_t lba_count, spdk_bs_sequence_cpl cb_fn, void *cb_arg)
195 {
196 	struct spdk_bs_request_set      *set = (struct spdk_bs_request_set *)seq;
197 	struct spdk_bs_channel       *channel = set->channel;
198 
199 	set->u.sequence.cb_fn = cb_fn;
200 	set->u.sequence.cb_arg = cb_arg;
201 	channel->dev->readv(channel->dev, channel->dev_channel, iov, iovcnt, lba, lba_count,
202 			    &set->cb_args);
203 }
204 
205 void
206 spdk_bs_sequence_writev_dev(spdk_bs_sequence_t *seq, struct iovec *iov, int iovcnt,
207 			    uint64_t lba, uint32_t lba_count,
208 			    spdk_bs_sequence_cpl cb_fn, void *cb_arg)
209 {
210 	struct spdk_bs_request_set      *set = (struct spdk_bs_request_set *)seq;
211 	struct spdk_bs_channel       *channel = set->channel;
212 
213 	SPDK_DEBUGLOG(SPDK_LOG_BLOB_RW, "Writing %u blocks to LBA %lu\n", lba_count, lba);
214 
215 	set->u.sequence.cb_fn = cb_fn;
216 	set->u.sequence.cb_arg = cb_arg;
217 
218 	channel->dev->writev(channel->dev, channel->dev_channel, iov, iovcnt, lba, lba_count,
219 			     &set->cb_args);
220 }
221 
222 void
223 spdk_bs_sequence_unmap_dev(spdk_bs_sequence_t *seq,
224 			   uint64_t lba, uint32_t lba_count,
225 			   spdk_bs_sequence_cpl cb_fn, void *cb_arg)
226 {
227 	struct spdk_bs_request_set      *set = (struct spdk_bs_request_set *)seq;
228 	struct spdk_bs_channel       *channel = set->channel;
229 
230 	SPDK_DEBUGLOG(SPDK_LOG_BLOB_RW, "Unmapping %u blocks at LBA %lu\n", lba_count, lba);
231 
232 	set->u.sequence.cb_fn = cb_fn;
233 	set->u.sequence.cb_arg = cb_arg;
234 
235 	channel->dev->unmap(channel->dev, channel->dev_channel, lba, lba_count,
236 			    &set->cb_args);
237 }
238 
239 void
240 spdk_bs_sequence_write_zeroes_dev(spdk_bs_sequence_t *seq,
241 				  uint64_t lba, uint32_t lba_count,
242 				  spdk_bs_sequence_cpl cb_fn, void *cb_arg)
243 {
244 	struct spdk_bs_request_set      *set = (struct spdk_bs_request_set *)seq;
245 	struct spdk_bs_channel       *channel = set->channel;
246 
247 	SPDK_DEBUGLOG(SPDK_LOG_BLOB_RW, "writing zeroes to %u blocks at LBA %lu\n", lba_count, lba);
248 
249 	set->u.sequence.cb_fn = cb_fn;
250 	set->u.sequence.cb_arg = cb_arg;
251 
252 	channel->dev->write_zeroes(channel->dev, channel->dev_channel, lba, lba_count,
253 				   &set->cb_args);
254 }
255 
256 void
257 spdk_bs_sequence_finish(spdk_bs_sequence_t *seq, int bserrno)
258 {
259 	if (bserrno != 0) {
260 		seq->bserrno = bserrno;
261 	}
262 	spdk_bs_request_set_complete((struct spdk_bs_request_set *)seq);
263 }
264 
265 void
266 spdk_bs_user_op_sequence_finish(void *cb_arg, int bserrno)
267 {
268 	spdk_bs_sequence_t *seq = cb_arg;
269 
270 	spdk_bs_sequence_finish(seq, bserrno);
271 }
272 
273 static void
274 spdk_bs_batch_completion(struct spdk_io_channel *_channel,
275 			 void *cb_arg, int bserrno)
276 {
277 	struct spdk_bs_request_set	*set = cb_arg;
278 
279 	set->u.batch.outstanding_ops--;
280 	if (bserrno != 0) {
281 		set->bserrno = bserrno;
282 	}
283 
284 	if (set->u.batch.outstanding_ops == 0 && set->u.batch.batch_closed) {
285 		if (set->u.batch.cb_fn) {
286 			set->cb_args.cb_fn = spdk_bs_sequence_completion;
287 			set->u.batch.cb_fn((spdk_bs_sequence_t *)set, set->u.batch.cb_arg, bserrno);
288 		} else {
289 			spdk_bs_request_set_complete(set);
290 		}
291 	}
292 }
293 
294 spdk_bs_batch_t *
295 spdk_bs_batch_open(struct spdk_io_channel *_channel,
296 		   struct spdk_bs_cpl *cpl)
297 {
298 	struct spdk_bs_channel		*channel;
299 	struct spdk_bs_request_set	*set;
300 
301 	channel = spdk_io_channel_get_ctx(_channel);
302 
303 	set = TAILQ_FIRST(&channel->reqs);
304 	if (!set) {
305 		return NULL;
306 	}
307 	TAILQ_REMOVE(&channel->reqs, set, link);
308 
309 	set->cpl = *cpl;
310 	set->bserrno = 0;
311 	set->channel = channel;
312 
313 	set->u.batch.cb_fn = NULL;
314 	set->u.batch.cb_arg = NULL;
315 	set->u.batch.outstanding_ops = 0;
316 	set->u.batch.batch_closed = 0;
317 
318 	set->cb_args.cb_fn = spdk_bs_batch_completion;
319 	set->cb_args.cb_arg = set;
320 	set->cb_args.channel = channel->dev_channel;
321 
322 	return (spdk_bs_batch_t *)set;
323 }
324 
325 void
326 spdk_bs_batch_read_bs_dev(spdk_bs_batch_t *batch, struct spdk_bs_dev *bs_dev,
327 			  void *payload, uint64_t lba, uint32_t lba_count)
328 {
329 	struct spdk_bs_request_set	*set = (struct spdk_bs_request_set *)batch;
330 	struct spdk_bs_channel		*channel = set->channel;
331 
332 	SPDK_DEBUGLOG(SPDK_LOG_BLOB_RW, "Reading %u blocks from LBA %lu\n", lba_count, lba);
333 
334 	set->u.batch.outstanding_ops++;
335 	bs_dev->read(bs_dev, spdk_io_channel_from_ctx(channel), payload, lba, lba_count, &set->cb_args);
336 }
337 
338 void
339 spdk_bs_batch_read_dev(spdk_bs_batch_t *batch, void *payload,
340 		       uint64_t lba, uint32_t lba_count)
341 {
342 	struct spdk_bs_request_set	*set = (struct spdk_bs_request_set *)batch;
343 	struct spdk_bs_channel		*channel = set->channel;
344 
345 	set->u.batch.outstanding_ops++;
346 	channel->dev->read(channel->dev, channel->dev_channel, payload, lba, lba_count, &set->cb_args);
347 }
348 
349 void
350 spdk_bs_batch_write_dev(spdk_bs_batch_t *batch, void *payload,
351 			uint64_t lba, uint32_t lba_count)
352 {
353 	struct spdk_bs_request_set	*set = (struct spdk_bs_request_set *)batch;
354 	struct spdk_bs_channel		*channel = set->channel;
355 
356 	SPDK_DEBUGLOG(SPDK_LOG_BLOB_RW, "Writing %u blocks to LBA %lu\n", lba_count, lba);
357 
358 	set->u.batch.outstanding_ops++;
359 	channel->dev->write(channel->dev, channel->dev_channel, payload, lba, lba_count,
360 			    &set->cb_args);
361 }
362 
363 void
364 spdk_bs_batch_unmap_dev(spdk_bs_batch_t *batch,
365 			uint64_t lba, uint32_t lba_count)
366 {
367 	struct spdk_bs_request_set	*set = (struct spdk_bs_request_set *)batch;
368 	struct spdk_bs_channel		*channel = set->channel;
369 
370 	SPDK_DEBUGLOG(SPDK_LOG_BLOB_RW, "Unmapping %u blocks at LBA %lu\n", lba_count, lba);
371 
372 	set->u.batch.outstanding_ops++;
373 	channel->dev->unmap(channel->dev, channel->dev_channel, lba, lba_count,
374 			    &set->cb_args);
375 }
376 
377 void
378 spdk_bs_batch_write_zeroes_dev(spdk_bs_batch_t *batch,
379 			       uint64_t lba, uint32_t lba_count)
380 {
381 	struct spdk_bs_request_set	*set = (struct spdk_bs_request_set *)batch;
382 	struct spdk_bs_channel		*channel = set->channel;
383 
384 	SPDK_DEBUGLOG(SPDK_LOG_BLOB_RW, "Zeroing %u blocks at LBA %lu\n", lba_count, lba);
385 
386 	set->u.batch.outstanding_ops++;
387 	channel->dev->write_zeroes(channel->dev, channel->dev_channel, lba, lba_count,
388 				   &set->cb_args);
389 }
390 
391 static void
392 spdk_bs_batch_blob_op_complete(void *arg, int bserrno)
393 {
394 	/* TODO: spdk_bs_batch_completion does not actually use the channel parameter -
395 	 *  just pass NULL here instead of getting the channel from the set cb_arg.
396 	 */
397 	spdk_bs_batch_completion(NULL, arg, bserrno);
398 }
399 
400 void
401 spdk_bs_batch_read_blob(spdk_bs_batch_t *batch, struct spdk_blob *blob,
402 			void *payload, uint64_t offset, uint64_t length)
403 {
404 	struct spdk_bs_request_set	*set = (struct spdk_bs_request_set *)batch;
405 	struct spdk_bs_channel		*channel = set->channel;
406 
407 	SPDK_DEBUGLOG(SPDK_LOG_BLOB_RW, "Reading %lu pages from offset %lu\n", length, offset);
408 
409 	set->u.batch.outstanding_ops++;
410 	spdk_blob_io_read(blob, spdk_io_channel_from_ctx(channel), payload, offset,
411 			  length, spdk_bs_batch_blob_op_complete, set);
412 }
413 
414 void
415 spdk_bs_batch_write_blob(spdk_bs_batch_t *batch, struct spdk_blob *blob,
416 			 void *payload, uint64_t offset, uint64_t length)
417 {
418 	struct spdk_bs_request_set	*set = (struct spdk_bs_request_set *)batch;
419 	struct spdk_bs_channel		*channel = set->channel;
420 
421 	SPDK_DEBUGLOG(SPDK_LOG_BLOB_RW, "Writing %lu pages from offset %lu\n", length, offset);
422 
423 	set->u.batch.outstanding_ops++;
424 	spdk_blob_io_write(blob, spdk_io_channel_from_ctx(channel), payload, offset,
425 			   length, spdk_bs_batch_blob_op_complete, set);
426 }
427 
428 void
429 spdk_bs_batch_unmap_blob(spdk_bs_batch_t *batch, struct spdk_blob *blob,
430 			 uint64_t offset, uint64_t length)
431 {
432 	struct spdk_bs_request_set	*set = (struct spdk_bs_request_set *)batch;
433 	struct spdk_bs_channel		*channel = set->channel;
434 
435 	SPDK_DEBUGLOG(SPDK_LOG_BLOB_RW, "Unmapping %lu pages from offset %lu\n", length, offset);
436 
437 	set->u.batch.outstanding_ops++;
438 	spdk_blob_io_unmap(blob, spdk_io_channel_from_ctx(channel), offset, length,
439 			   spdk_bs_batch_blob_op_complete, set);
440 }
441 
442 void
443 spdk_bs_batch_write_zeroes_blob(spdk_bs_batch_t *batch, struct spdk_blob *blob,
444 				uint64_t offset, uint64_t length)
445 {
446 	struct spdk_bs_request_set	*set = (struct spdk_bs_request_set *)batch;
447 	struct spdk_bs_channel		*channel = set->channel;
448 
449 	SPDK_DEBUGLOG(SPDK_LOG_BLOB_RW, "Zeroing %lu pages from offset %lu\n", length, offset);
450 
451 	set->u.batch.outstanding_ops++;
452 	spdk_blob_io_write_zeroes(blob, spdk_io_channel_from_ctx(channel), offset, length,
453 				  spdk_bs_batch_blob_op_complete, set);
454 }
455 
456 void
457 spdk_bs_batch_set_errno(spdk_bs_batch_t *batch, int bserrno)
458 {
459 	struct spdk_bs_request_set	*set = (struct spdk_bs_request_set *)batch;
460 
461 	set->bserrno = bserrno;
462 }
463 
464 void
465 spdk_bs_batch_close(spdk_bs_batch_t *batch)
466 {
467 	struct spdk_bs_request_set	*set = (struct spdk_bs_request_set *)batch;
468 
469 	set->u.batch.batch_closed = 1;
470 
471 	if (set->u.batch.outstanding_ops == 0) {
472 		if (set->u.batch.cb_fn) {
473 			set->cb_args.cb_fn = spdk_bs_sequence_completion;
474 			set->u.batch.cb_fn((spdk_bs_sequence_t *)set, set->u.batch.cb_arg, set->bserrno);
475 		} else {
476 			spdk_bs_request_set_complete(set);
477 		}
478 	}
479 }
480 
481 spdk_bs_batch_t *
482 spdk_bs_sequence_to_batch(spdk_bs_sequence_t *seq, spdk_bs_sequence_cpl cb_fn, void *cb_arg)
483 {
484 	struct spdk_bs_request_set *set = (struct spdk_bs_request_set *)seq;
485 
486 	set->u.batch.cb_fn = cb_fn;
487 	set->u.batch.cb_arg = cb_arg;
488 	set->u.batch.outstanding_ops = 0;
489 	set->u.batch.batch_closed = 0;
490 
491 	set->cb_args.cb_fn = spdk_bs_batch_completion;
492 
493 	return set;
494 }
495 
496 spdk_bs_sequence_t *
497 spdk_bs_batch_to_sequence(spdk_bs_batch_t *batch)
498 {
499 	struct spdk_bs_request_set *set = (struct spdk_bs_request_set *)batch;
500 
501 	set->u.batch.outstanding_ops++;
502 
503 	set->cpl.type = SPDK_BS_CPL_TYPE_BLOB_BASIC;
504 	set->cpl.u.blob_basic.cb_fn = spdk_bs_sequence_to_batch_completion;
505 	set->cpl.u.blob_basic.cb_arg = set;
506 	set->bserrno = 0;
507 
508 	set->cb_args.cb_fn = spdk_bs_sequence_completion;
509 	set->cb_args.cb_arg = set;
510 	set->cb_args.channel = set->channel->dev_channel;
511 
512 	return (spdk_bs_sequence_t *)set;
513 }
514 
515 spdk_bs_user_op_t *
516 spdk_bs_user_op_alloc(struct spdk_io_channel *_channel, struct spdk_bs_cpl *cpl,
517 		      enum spdk_blob_op_type op_type, struct spdk_blob *blob,
518 		      void *payload, int iovcnt, uint64_t offset, uint64_t length)
519 {
520 	struct spdk_bs_channel		*channel;
521 	struct spdk_bs_request_set	*set;
522 	struct spdk_bs_user_op_args	*args;
523 
524 	channel = spdk_io_channel_get_ctx(_channel);
525 
526 	set = TAILQ_FIRST(&channel->reqs);
527 	if (!set) {
528 		return NULL;
529 	}
530 	TAILQ_REMOVE(&channel->reqs, set, link);
531 
532 	set->cpl = *cpl;
533 	set->channel = channel;
534 
535 	args = &set->u.user_op;
536 
537 	args->type = op_type;
538 	args->iovcnt = iovcnt;
539 	args->blob = blob;
540 	args->offset = offset;
541 	args->length = length;
542 	args->payload = payload;
543 
544 	return (spdk_bs_user_op_t *)set;
545 }
546 
547 void
548 spdk_bs_user_op_execute(spdk_bs_user_op_t *op)
549 {
550 	struct spdk_bs_request_set	*set;
551 	struct spdk_bs_user_op_args	*args;
552 	struct spdk_io_channel		*ch;
553 
554 	set = (struct spdk_bs_request_set *)op;
555 	args = &set->u.user_op;
556 	ch = spdk_io_channel_from_ctx(set->channel);
557 
558 	switch (args->type) {
559 	case SPDK_BLOB_READ:
560 		spdk_blob_io_read(args->blob, ch, args->payload, args->offset, args->length,
561 				  set->cpl.u.blob_basic.cb_fn, set->cpl.u.blob_basic.cb_arg);
562 		break;
563 	case SPDK_BLOB_WRITE:
564 		spdk_blob_io_write(args->blob, ch, args->payload, args->offset, args->length,
565 				   set->cpl.u.blob_basic.cb_fn, set->cpl.u.blob_basic.cb_arg);
566 		break;
567 	case SPDK_BLOB_UNMAP:
568 		spdk_blob_io_unmap(args->blob, ch, args->offset, args->length,
569 				   set->cpl.u.blob_basic.cb_fn, set->cpl.u.blob_basic.cb_arg);
570 		break;
571 	case SPDK_BLOB_WRITE_ZEROES:
572 		spdk_blob_io_write_zeroes(args->blob, ch, args->offset, args->length,
573 					  set->cpl.u.blob_basic.cb_fn, set->cpl.u.blob_basic.cb_arg);
574 		break;
575 	case SPDK_BLOB_READV:
576 		spdk_blob_io_readv(args->blob, ch, args->payload, args->iovcnt,
577 				   args->offset, args->length,
578 				   set->cpl.u.blob_basic.cb_fn, set->cpl.u.blob_basic.cb_arg);
579 		break;
580 	case SPDK_BLOB_WRITEV:
581 		spdk_blob_io_writev(args->blob, ch, args->payload, args->iovcnt,
582 				    args->offset, args->length,
583 				    set->cpl.u.blob_basic.cb_fn, set->cpl.u.blob_basic.cb_arg);
584 		break;
585 	}
586 	TAILQ_INSERT_TAIL(&set->channel->reqs, set, link);
587 }
588 
589 void
590 spdk_bs_user_op_abort(spdk_bs_user_op_t *op)
591 {
592 	struct spdk_bs_request_set	*set;
593 
594 	set = (struct spdk_bs_request_set *)op;
595 
596 	set->cpl.u.blob_basic.cb_fn(set->cpl.u.blob_basic.cb_arg, -EIO);
597 	TAILQ_INSERT_TAIL(&set->channel->reqs, set, link);
598 }
599 
600 void
601 spdk_bs_sequence_to_batch_completion(void *cb_arg, int bserrno)
602 {
603 	struct spdk_bs_request_set *set = (struct spdk_bs_request_set *)cb_arg;
604 
605 	set->u.batch.outstanding_ops--;
606 
607 	if (set->u.batch.outstanding_ops == 0 && set->u.batch.batch_closed) {
608 		if (set->cb_args.cb_fn) {
609 			set->cb_args.cb_fn(set->cb_args.channel, set->cb_args.cb_arg, bserrno);
610 		}
611 	}
612 }
613 
614 SPDK_LOG_REGISTER_COMPONENT("blob_rw", SPDK_LOG_BLOB_RW)
615