]>
Commit | Line | Data |
---|---|---|
c589b249 RS |
1 | /* |
2 | * QEMU Block driver for iSCSI images | |
3 | * | |
4 | * Copyright (c) 2010-2011 Ronnie Sahlberg <ronniesahlberg@gmail.com> | |
2af8a1a7 | 5 | * Copyright (c) 2012-2013 Peter Lieven <pl@kamp.de> |
c589b249 RS |
6 | * |
7 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
8 | * of this software and associated documentation files (the "Software"), to deal | |
9 | * in the Software without restriction, including without limitation the rights | |
10 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
11 | * copies of the Software, and to permit persons to whom the Software is | |
12 | * furnished to do so, subject to the following conditions: | |
13 | * | |
14 | * The above copyright notice and this permission notice shall be included in | |
15 | * all copies or substantial portions of the Software. | |
16 | * | |
17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
18 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
20 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
21 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
22 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
23 | * THE SOFTWARE. | |
24 | */ | |
25 | ||
26 | #include "config-host.h" | |
27 | ||
28 | #include <poll.h> | |
f4dfa67f | 29 | #include <arpa/inet.h> |
c589b249 | 30 | #include "qemu-common.h" |
1de7afc9 PB |
31 | #include "qemu/config-file.h" |
32 | #include "qemu/error-report.h" | |
b03c3805 PL |
33 | #include "qemu/bitops.h" |
34 | #include "qemu/bitmap.h" | |
737e150e | 35 | #include "block/block_int.h" |
c589b249 | 36 | #include "trace.h" |
0d09e41a | 37 | #include "block/scsi.h" |
0a53f010 | 38 | #include "qemu/iov.h" |
5accc840 PB |
39 | #include "sysemu/sysemu.h" |
40 | #include "qmp-commands.h" | |
c589b249 RS |
41 | |
42 | #include <iscsi/iscsi.h> | |
43 | #include <iscsi/scsi-lowlevel.h> | |
44 | ||
98392453 RS |
45 | #ifdef __linux__ |
46 | #include <scsi/sg.h> | |
0d09e41a | 47 | #include <block/scsi.h> |
98392453 | 48 | #endif |
c589b249 RS |
49 | |
50 | typedef struct IscsiLun { | |
51 | struct iscsi_context *iscsi; | |
52 | int lun; | |
dbfff6d7 | 53 | enum scsi_inquiry_peripheral_device_type type; |
c589b249 | 54 | int block_size; |
c7b4a952 | 55 | uint64_t num_blocks; |
c9b9f682 | 56 | int events; |
5b5d34ec | 57 | QEMUTimer *nop_timer; |
f18a7cbb PL |
58 | uint8_t lbpme; |
59 | uint8_t lbprz; | |
fa6252b0 | 60 | uint8_t has_write_same; |
f18a7cbb PL |
61 | struct scsi_inquiry_logical_block_provisioning lbp; |
62 | struct scsi_inquiry_block_limits bl; | |
d4cd9615 | 63 | unsigned char *zeroblock; |
b03c3805 PL |
64 | unsigned long *allocationmap; |
65 | int cluster_sectors; | |
c589b249 RS |
66 | } IscsiLun; |
67 | ||
54a5c1d5 PL |
68 | typedef struct IscsiTask { |
69 | int status; | |
70 | int complete; | |
71 | int retries; | |
72 | int do_retry; | |
73 | struct scsi_task *task; | |
74 | Coroutine *co; | |
8b9dfe90 | 75 | QEMUBH *bh; |
54a5c1d5 PL |
76 | } IscsiTask; |
77 | ||
c589b249 RS |
78 | typedef struct IscsiAIOCB { |
79 | BlockDriverAIOCB common; | |
80 | QEMUIOVector *qiov; | |
81 | QEMUBH *bh; | |
82 | IscsiLun *iscsilun; | |
83 | struct scsi_task *task; | |
84 | uint8_t *buf; | |
85 | int status; | |
86 | int canceled; | |
1dde716e | 87 | int retries; |
1dde716e PL |
88 | int64_t sector_num; |
89 | int nb_sectors; | |
98392453 RS |
90 | #ifdef __linux__ |
91 | sg_io_hdr_t *ioh; | |
92 | #endif | |
c589b249 RS |
93 | } IscsiAIOCB; |
94 | ||
5b5d34ec PL |
95 | #define NOP_INTERVAL 5000 |
96 | #define MAX_NOP_FAILURES 3 | |
1dde716e | 97 | #define ISCSI_CMD_RETRIES 5 |
b03c3805 | 98 | #define ISCSI_CHECKALLOC_THRES 63 |
5b5d34ec | 99 | |
27cbd828 | 100 | static void |
cfb3f506 | 101 | iscsi_bh_cb(void *p) |
27cbd828 PB |
102 | { |
103 | IscsiAIOCB *acb = p; | |
104 | ||
105 | qemu_bh_delete(acb->bh); | |
106 | ||
4790b03d PB |
107 | g_free(acb->buf); |
108 | acb->buf = NULL; | |
109 | ||
27cbd828 PB |
110 | if (acb->canceled == 0) { |
111 | acb->common.cb(acb->common.opaque, acb->status); | |
112 | } | |
113 | ||
1bd075f2 PB |
114 | if (acb->task != NULL) { |
115 | scsi_free_scsi_task(acb->task); | |
116 | acb->task = NULL; | |
117 | } | |
118 | ||
27cbd828 PB |
119 | qemu_aio_release(acb); |
120 | } | |
121 | ||
cfb3f506 PB |
122 | static void |
123 | iscsi_schedule_bh(IscsiAIOCB *acb) | |
27cbd828 | 124 | { |
1bd075f2 PB |
125 | if (acb->bh) { |
126 | return; | |
127 | } | |
cfb3f506 | 128 | acb->bh = qemu_bh_new(iscsi_bh_cb, acb); |
27cbd828 | 129 | qemu_bh_schedule(acb->bh); |
27cbd828 PB |
130 | } |
131 | ||
8b9dfe90 PL |
132 | static void iscsi_co_generic_bh_cb(void *opaque) |
133 | { | |
134 | struct IscsiTask *iTask = opaque; | |
135 | qemu_bh_delete(iTask->bh); | |
136 | qemu_coroutine_enter(iTask->co, NULL); | |
137 | } | |
138 | ||
54a5c1d5 PL |
139 | static void |
140 | iscsi_co_generic_cb(struct iscsi_context *iscsi, int status, | |
141 | void *command_data, void *opaque) | |
142 | { | |
143 | struct IscsiTask *iTask = opaque; | |
144 | struct scsi_task *task = command_data; | |
145 | ||
146 | iTask->complete = 1; | |
147 | iTask->status = status; | |
148 | iTask->do_retry = 0; | |
149 | iTask->task = task; | |
150 | ||
151 | if (iTask->retries-- > 0 && status == SCSI_STATUS_CHECK_CONDITION | |
152 | && task->sense.key == SCSI_SENSE_UNIT_ATTENTION) { | |
837c3901 | 153 | error_report("iSCSI CheckCondition: %s", iscsi_get_error(iscsi)); |
54a5c1d5 PL |
154 | iTask->do_retry = 1; |
155 | goto out; | |
156 | } | |
157 | ||
158 | if (status != SCSI_STATUS_GOOD) { | |
837c3901 | 159 | error_report("iSCSI Failure: %s", iscsi_get_error(iscsi)); |
54a5c1d5 PL |
160 | } |
161 | ||
162 | out: | |
163 | if (iTask->co) { | |
8b9dfe90 PL |
164 | iTask->bh = qemu_bh_new(iscsi_co_generic_bh_cb, iTask); |
165 | qemu_bh_schedule(iTask->bh); | |
54a5c1d5 PL |
166 | } |
167 | } | |
168 | ||
169 | static void iscsi_co_init_iscsitask(IscsiLun *iscsilun, struct IscsiTask *iTask) | |
170 | { | |
171 | *iTask = (struct IscsiTask) { | |
172 | .co = qemu_coroutine_self(), | |
173 | .retries = ISCSI_CMD_RETRIES, | |
174 | }; | |
175 | } | |
27cbd828 | 176 | |
c589b249 RS |
177 | static void |
178 | iscsi_abort_task_cb(struct iscsi_context *iscsi, int status, void *command_data, | |
179 | void *private_data) | |
180 | { | |
1bd075f2 PB |
181 | IscsiAIOCB *acb = private_data; |
182 | ||
183 | acb->status = -ECANCELED; | |
184 | iscsi_schedule_bh(acb); | |
c589b249 RS |
185 | } |
186 | ||
187 | static void | |
188 | iscsi_aio_cancel(BlockDriverAIOCB *blockacb) | |
189 | { | |
190 | IscsiAIOCB *acb = (IscsiAIOCB *)blockacb; | |
191 | IscsiLun *iscsilun = acb->iscsilun; | |
192 | ||
1bd075f2 PB |
193 | if (acb->status != -EINPROGRESS) { |
194 | return; | |
195 | } | |
196 | ||
b2090919 | 197 | acb->canceled = 1; |
c589b249 | 198 | |
b2090919 | 199 | /* send a task mgmt call to the target to cancel the task on the target */ |
64e69e80 | 200 | iscsi_task_mgmt_abort_task_async(iscsilun->iscsi, acb->task, |
1bd075f2 | 201 | iscsi_abort_task_cb, acb); |
b2090919 | 202 | |
1bd075f2 PB |
203 | while (acb->status == -EINPROGRESS) { |
204 | qemu_aio_wait(); | |
205 | } | |
c589b249 RS |
206 | } |
207 | ||
d7331bed | 208 | static const AIOCBInfo iscsi_aiocb_info = { |
c589b249 RS |
209 | .aiocb_size = sizeof(IscsiAIOCB), |
210 | .cancel = iscsi_aio_cancel, | |
211 | }; | |
212 | ||
213 | ||
214 | static void iscsi_process_read(void *arg); | |
215 | static void iscsi_process_write(void *arg); | |
216 | ||
c589b249 RS |
217 | static void |
218 | iscsi_set_events(IscsiLun *iscsilun) | |
219 | { | |
220 | struct iscsi_context *iscsi = iscsilun->iscsi; | |
c9b9f682 RS |
221 | int ev; |
222 | ||
223 | /* We always register a read handler. */ | |
224 | ev = POLLIN; | |
225 | ev |= iscsi_which_events(iscsi); | |
226 | if (ev != iscsilun->events) { | |
227 | qemu_aio_set_fd_handler(iscsi_get_fd(iscsi), | |
228 | iscsi_process_read, | |
229 | (ev & POLLOUT) ? iscsi_process_write : NULL, | |
c9b9f682 RS |
230 | iscsilun); |
231 | ||
232 | } | |
233 | ||
c9b9f682 | 234 | iscsilun->events = ev; |
c589b249 RS |
235 | } |
236 | ||
237 | static void | |
238 | iscsi_process_read(void *arg) | |
239 | { | |
240 | IscsiLun *iscsilun = arg; | |
241 | struct iscsi_context *iscsi = iscsilun->iscsi; | |
242 | ||
243 | iscsi_service(iscsi, POLLIN); | |
244 | iscsi_set_events(iscsilun); | |
245 | } | |
246 | ||
247 | static void | |
248 | iscsi_process_write(void *arg) | |
249 | { | |
250 | IscsiLun *iscsilun = arg; | |
251 | struct iscsi_context *iscsi = iscsilun->iscsi; | |
252 | ||
253 | iscsi_service(iscsi, POLLOUT); | |
254 | iscsi_set_events(iscsilun); | |
255 | } | |
256 | ||
0777b5dd PL |
257 | static int64_t sector_lun2qemu(int64_t sector, IscsiLun *iscsilun) |
258 | { | |
259 | return sector * iscsilun->block_size / BDRV_SECTOR_SIZE; | |
260 | } | |
261 | ||
c589b249 RS |
262 | static int64_t sector_qemu2lun(int64_t sector, IscsiLun *iscsilun) |
263 | { | |
264 | return sector * BDRV_SECTOR_SIZE / iscsilun->block_size; | |
265 | } | |
266 | ||
91bea4e2 PL |
267 | static bool is_request_lun_aligned(int64_t sector_num, int nb_sectors, |
268 | IscsiLun *iscsilun) | |
269 | { | |
270 | if ((sector_num * BDRV_SECTOR_SIZE) % iscsilun->block_size || | |
271 | (nb_sectors * BDRV_SECTOR_SIZE) % iscsilun->block_size) { | |
f5075224 RJ |
272 | error_report("iSCSI misaligned request: " |
273 | "iscsilun->block_size %u, sector_num %" PRIi64 | |
274 | ", nb_sectors %d", | |
91bea4e2 PL |
275 | iscsilun->block_size, sector_num, nb_sectors); |
276 | return 0; | |
277 | } | |
278 | return 1; | |
279 | } | |
280 | ||
b03c3805 PL |
281 | static void iscsi_allocationmap_set(IscsiLun *iscsilun, int64_t sector_num, |
282 | int nb_sectors) | |
283 | { | |
284 | if (iscsilun->allocationmap == NULL) { | |
285 | return; | |
286 | } | |
287 | bitmap_set(iscsilun->allocationmap, | |
288 | sector_num / iscsilun->cluster_sectors, | |
289 | DIV_ROUND_UP(nb_sectors, iscsilun->cluster_sectors)); | |
290 | } | |
291 | ||
292 | static void iscsi_allocationmap_clear(IscsiLun *iscsilun, int64_t sector_num, | |
293 | int nb_sectors) | |
294 | { | |
295 | int64_t cluster_num, nb_clusters; | |
296 | if (iscsilun->allocationmap == NULL) { | |
297 | return; | |
298 | } | |
299 | cluster_num = DIV_ROUND_UP(sector_num, iscsilun->cluster_sectors); | |
300 | nb_clusters = (sector_num + nb_sectors) / iscsilun->cluster_sectors | |
301 | - cluster_num; | |
302 | if (nb_clusters > 0) { | |
303 | bitmap_clear(iscsilun->allocationmap, cluster_num, nb_clusters); | |
304 | } | |
305 | } | |
306 | ||
063c3378 PL |
307 | static int coroutine_fn iscsi_co_writev(BlockDriverState *bs, |
308 | int64_t sector_num, int nb_sectors, | |
309 | QEMUIOVector *iov) | |
c589b249 | 310 | { |
063c3378 PL |
311 | IscsiLun *iscsilun = bs->opaque; |
312 | struct IscsiTask iTask; | |
f4dfa67f | 313 | uint64_t lba; |
063c3378 PL |
314 | uint32_t num_sectors; |
315 | uint8_t *data = NULL; | |
316 | uint8_t *buf = NULL; | |
c589b249 | 317 | |
063c3378 PL |
318 | if (!is_request_lun_aligned(sector_num, nb_sectors, iscsilun)) { |
319 | return -EINVAL; | |
320 | } | |
7371d56f | 321 | |
063c3378 PL |
322 | lba = sector_qemu2lun(sector_num, iscsilun); |
323 | num_sectors = sector_qemu2lun(nb_sectors, iscsilun); | |
7371d56f | 324 | #if !defined(LIBISCSI_FEATURE_IOVECTOR) |
4cc841b5 | 325 | /* if the iovec only contains one buffer we can pass it directly */ |
063c3378 PL |
326 | if (iov->niov == 1) { |
327 | data = iov->iov[0].iov_base; | |
4cc841b5 | 328 | } else { |
063c3378 PL |
329 | size_t size = MIN(nb_sectors * BDRV_SECTOR_SIZE, iov->size); |
330 | buf = g_malloc(size); | |
331 | qemu_iovec_to_buf(iov, 0, buf, size); | |
332 | data = buf; | |
4cc841b5 | 333 | } |
7371d56f | 334 | #endif |
063c3378 PL |
335 | iscsi_co_init_iscsitask(iscsilun, &iTask); |
336 | retry: | |
337 | iTask.task = iscsi_write16_task(iscsilun->iscsi, iscsilun->lun, lba, | |
338 | data, num_sectors * iscsilun->block_size, | |
339 | iscsilun->block_size, 0, 0, 0, 0, 0, | |
340 | iscsi_co_generic_cb, &iTask); | |
341 | if (iTask.task == NULL) { | |
342 | g_free(buf); | |
92397116 | 343 | return -ENOMEM; |
f4dfa67f | 344 | } |
7371d56f | 345 | #if defined(LIBISCSI_FEATURE_IOVECTOR) |
063c3378 PL |
346 | scsi_task_set_iov_out(iTask.task, (struct scsi_iovec *) iov->iov, |
347 | iov->niov); | |
7371d56f | 348 | #endif |
063c3378 PL |
349 | while (!iTask.complete) { |
350 | iscsi_set_events(iscsilun); | |
351 | qemu_coroutine_yield(); | |
c589b249 RS |
352 | } |
353 | ||
063c3378 PL |
354 | if (iTask.task != NULL) { |
355 | scsi_free_scsi_task(iTask.task); | |
356 | iTask.task = NULL; | |
91bea4e2 PL |
357 | } |
358 | ||
063c3378 | 359 | if (iTask.do_retry) { |
837c3901 | 360 | iTask.complete = 0; |
063c3378 | 361 | goto retry; |
1dde716e PL |
362 | } |
363 | ||
063c3378 | 364 | g_free(buf); |
c589b249 | 365 | |
063c3378 PL |
366 | if (iTask.status != SCSI_STATUS_GOOD) { |
367 | return -EIO; | |
c589b249 RS |
368 | } |
369 | ||
b03c3805 PL |
370 | iscsi_allocationmap_set(iscsilun, sector_num, nb_sectors); |
371 | ||
063c3378 | 372 | return 0; |
c589b249 RS |
373 | } |
374 | ||
b03c3805 PL |
375 | |
376 | static bool iscsi_allocationmap_is_allocated(IscsiLun *iscsilun, | |
377 | int64_t sector_num, int nb_sectors) | |
378 | { | |
379 | unsigned long size; | |
380 | if (iscsilun->allocationmap == NULL) { | |
381 | return true; | |
382 | } | |
383 | size = DIV_ROUND_UP(sector_num + nb_sectors, iscsilun->cluster_sectors); | |
384 | return !(find_next_bit(iscsilun->allocationmap, size, | |
385 | sector_num / iscsilun->cluster_sectors) == size); | |
386 | } | |
387 | ||
388 | ||
389 | #if defined(LIBISCSI_FEATURE_IOVECTOR) | |
390 | ||
391 | static int64_t coroutine_fn iscsi_co_get_block_status(BlockDriverState *bs, | |
392 | int64_t sector_num, | |
393 | int nb_sectors, int *pnum) | |
394 | { | |
395 | IscsiLun *iscsilun = bs->opaque; | |
396 | struct scsi_get_lba_status *lbas = NULL; | |
397 | struct scsi_lba_status_descriptor *lbasd = NULL; | |
398 | struct IscsiTask iTask; | |
399 | int64_t ret; | |
400 | ||
401 | iscsi_co_init_iscsitask(iscsilun, &iTask); | |
402 | ||
403 | if (!is_request_lun_aligned(sector_num, nb_sectors, iscsilun)) { | |
404 | ret = -EINVAL; | |
405 | goto out; | |
406 | } | |
407 | ||
408 | /* default to all sectors allocated */ | |
409 | ret = BDRV_BLOCK_DATA; | |
410 | ret |= (sector_num << BDRV_SECTOR_BITS) | BDRV_BLOCK_OFFSET_VALID; | |
411 | *pnum = nb_sectors; | |
412 | ||
413 | /* LUN does not support logical block provisioning */ | |
414 | if (iscsilun->lbpme == 0) { | |
415 | goto out; | |
416 | } | |
417 | ||
418 | retry: | |
419 | if (iscsi_get_lba_status_task(iscsilun->iscsi, iscsilun->lun, | |
420 | sector_qemu2lun(sector_num, iscsilun), | |
421 | 8 + 16, iscsi_co_generic_cb, | |
422 | &iTask) == NULL) { | |
423 | ret = -ENOMEM; | |
424 | goto out; | |
425 | } | |
426 | ||
427 | while (!iTask.complete) { | |
428 | iscsi_set_events(iscsilun); | |
429 | qemu_coroutine_yield(); | |
430 | } | |
431 | ||
432 | if (iTask.do_retry) { | |
433 | if (iTask.task != NULL) { | |
434 | scsi_free_scsi_task(iTask.task); | |
435 | iTask.task = NULL; | |
436 | } | |
437 | iTask.complete = 0; | |
438 | goto retry; | |
439 | } | |
440 | ||
441 | if (iTask.status != SCSI_STATUS_GOOD) { | |
442 | /* in case the get_lba_status_callout fails (i.e. | |
443 | * because the device is busy or the cmd is not | |
444 | * supported) we pretend all blocks are allocated | |
445 | * for backwards compatibility */ | |
446 | goto out; | |
447 | } | |
448 | ||
449 | lbas = scsi_datain_unmarshall(iTask.task); | |
450 | if (lbas == NULL) { | |
451 | ret = -EIO; | |
452 | goto out; | |
453 | } | |
454 | ||
455 | lbasd = &lbas->descriptors[0]; | |
456 | ||
457 | if (sector_qemu2lun(sector_num, iscsilun) != lbasd->lba) { | |
458 | ret = -EIO; | |
459 | goto out; | |
460 | } | |
461 | ||
462 | *pnum = sector_lun2qemu(lbasd->num_blocks, iscsilun); | |
463 | ||
464 | if (lbasd->provisioning == SCSI_PROVISIONING_TYPE_DEALLOCATED || | |
465 | lbasd->provisioning == SCSI_PROVISIONING_TYPE_ANCHORED) { | |
466 | ret &= ~BDRV_BLOCK_DATA; | |
467 | if (iscsilun->lbprz) { | |
468 | ret |= BDRV_BLOCK_ZERO; | |
469 | } | |
470 | } | |
471 | ||
472 | if (ret & BDRV_BLOCK_ZERO) { | |
473 | iscsi_allocationmap_clear(iscsilun, sector_num, *pnum); | |
474 | } else { | |
475 | iscsi_allocationmap_set(iscsilun, sector_num, *pnum); | |
476 | } | |
477 | ||
478 | if (*pnum > nb_sectors) { | |
479 | *pnum = nb_sectors; | |
480 | } | |
481 | out: | |
482 | if (iTask.task != NULL) { | |
483 | scsi_free_scsi_task(iTask.task); | |
484 | } | |
485 | return ret; | |
486 | } | |
487 | ||
488 | #endif /* LIBISCSI_FEATURE_IOVECTOR */ | |
489 | ||
490 | ||
063c3378 PL |
491 | static int coroutine_fn iscsi_co_readv(BlockDriverState *bs, |
492 | int64_t sector_num, int nb_sectors, | |
493 | QEMUIOVector *iov) | |
c589b249 | 494 | { |
063c3378 PL |
495 | IscsiLun *iscsilun = bs->opaque; |
496 | struct IscsiTask iTask; | |
1dde716e PL |
497 | uint64_t lba; |
498 | uint32_t num_sectors; | |
7371d56f | 499 | #if !defined(LIBISCSI_FEATURE_IOVECTOR) |
c589b249 | 500 | int i; |
7371d56f | 501 | #endif |
c589b249 | 502 | |
063c3378 PL |
503 | if (!is_request_lun_aligned(sector_num, nb_sectors, iscsilun)) { |
504 | return -EINVAL; | |
f4dfa67f | 505 | } |
f4dfa67f | 506 | |
b03c3805 PL |
507 | #if defined(LIBISCSI_FEATURE_IOVECTOR) |
508 | if (iscsilun->lbprz && nb_sectors > ISCSI_CHECKALLOC_THRES && | |
509 | !iscsi_allocationmap_is_allocated(iscsilun, sector_num, nb_sectors)) { | |
510 | int64_t ret; | |
511 | int pnum; | |
512 | ret = iscsi_co_get_block_status(bs, sector_num, INT_MAX, &pnum); | |
513 | if (ret < 0) { | |
514 | return ret; | |
515 | } | |
516 | if (ret & BDRV_BLOCK_ZERO && pnum >= nb_sectors) { | |
517 | qemu_iovec_memset(iov, 0, 0x00, iov->size); | |
518 | return 0; | |
519 | } | |
520 | } | |
521 | #endif | |
522 | ||
063c3378 PL |
523 | lba = sector_qemu2lun(sector_num, iscsilun); |
524 | num_sectors = sector_qemu2lun(nb_sectors, iscsilun); | |
f4dfa67f | 525 | |
063c3378 PL |
526 | iscsi_co_init_iscsitask(iscsilun, &iTask); |
527 | retry: | |
528 | switch (iscsilun->type) { | |
f4dfa67f | 529 | case TYPE_DISK: |
063c3378 PL |
530 | iTask.task = iscsi_read16_task(iscsilun->iscsi, iscsilun->lun, lba, |
531 | num_sectors * iscsilun->block_size, | |
532 | iscsilun->block_size, 0, 0, 0, 0, 0, | |
533 | iscsi_co_generic_cb, &iTask); | |
f4dfa67f RS |
534 | break; |
535 | default: | |
063c3378 PL |
536 | iTask.task = iscsi_read10_task(iscsilun->iscsi, iscsilun->lun, lba, |
537 | num_sectors * iscsilun->block_size, | |
219c2521 SW |
538 | iscsilun->block_size, |
539 | #if !defined(CONFIG_LIBISCSI_1_4) /* API change from 1.4.0 to 1.5.0 */ | |
540 | 0, 0, 0, 0, 0, | |
541 | #endif | |
063c3378 | 542 | iscsi_co_generic_cb, &iTask); |
f4dfa67f RS |
543 | break; |
544 | } | |
063c3378 | 545 | if (iTask.task == NULL) { |
92397116 | 546 | return -ENOMEM; |
c589b249 | 547 | } |
7371d56f | 548 | #if defined(LIBISCSI_FEATURE_IOVECTOR) |
063c3378 | 549 | scsi_task_set_iov_in(iTask.task, (struct scsi_iovec *) iov->iov, iov->niov); |
7371d56f | 550 | #else |
063c3378 PL |
551 | for (i = 0; i < iov->niov; i++) { |
552 | scsi_task_add_data_in_buffer(iTask.task, | |
553 | iov->iov[i].iov_len, | |
554 | iov->iov[i].iov_base); | |
c589b249 | 555 | } |
7371d56f | 556 | #endif |
91bea4e2 | 557 | |
063c3378 PL |
558 | while (!iTask.complete) { |
559 | iscsi_set_events(iscsilun); | |
560 | qemu_coroutine_yield(); | |
1dde716e | 561 | } |
c589b249 | 562 | |
063c3378 PL |
563 | if (iTask.task != NULL) { |
564 | scsi_free_scsi_task(iTask.task); | |
565 | iTask.task = NULL; | |
c589b249 RS |
566 | } |
567 | ||
063c3378 | 568 | if (iTask.do_retry) { |
837c3901 | 569 | iTask.complete = 0; |
063c3378 | 570 | goto retry; |
c589b249 RS |
571 | } |
572 | ||
063c3378 PL |
573 | if (iTask.status != SCSI_STATUS_GOOD) { |
574 | return -EIO; | |
1dde716e PL |
575 | } |
576 | ||
577 | return 0; | |
578 | } | |
579 | ||
063c3378 | 580 | static int coroutine_fn iscsi_co_flush(BlockDriverState *bs) |
1dde716e PL |
581 | { |
582 | IscsiLun *iscsilun = bs->opaque; | |
063c3378 | 583 | struct IscsiTask iTask; |
1dde716e | 584 | |
b2f9c08a PB |
585 | if (bs->sg) { |
586 | return 0; | |
587 | } | |
588 | ||
063c3378 | 589 | iscsi_co_init_iscsitask(iscsilun, &iTask); |
1dde716e | 590 | |
063c3378 PL |
591 | retry: |
592 | if (iscsi_synchronizecache10_task(iscsilun->iscsi, iscsilun->lun, 0, 0, 0, | |
593 | 0, iscsi_co_generic_cb, &iTask) == NULL) { | |
92397116 | 594 | return -ENOMEM; |
063c3378 | 595 | } |
1dde716e | 596 | |
063c3378 PL |
597 | while (!iTask.complete) { |
598 | iscsi_set_events(iscsilun); | |
599 | qemu_coroutine_yield(); | |
600 | } | |
1dde716e | 601 | |
063c3378 PL |
602 | if (iTask.task != NULL) { |
603 | scsi_free_scsi_task(iTask.task); | |
604 | iTask.task = NULL; | |
c589b249 RS |
605 | } |
606 | ||
063c3378 | 607 | if (iTask.do_retry) { |
837c3901 | 608 | iTask.complete = 0; |
063c3378 PL |
609 | goto retry; |
610 | } | |
c589b249 | 611 | |
063c3378 PL |
612 | if (iTask.status != SCSI_STATUS_GOOD) { |
613 | return -EIO; | |
614 | } | |
615 | ||
616 | return 0; | |
c589b249 RS |
617 | } |
618 | ||
98392453 RS |
619 | #ifdef __linux__ |
620 | static void | |
621 | iscsi_aio_ioctl_cb(struct iscsi_context *iscsi, int status, | |
622 | void *command_data, void *opaque) | |
623 | { | |
624 | IscsiAIOCB *acb = opaque; | |
625 | ||
0a53f010 RS |
626 | g_free(acb->buf); |
627 | acb->buf = NULL; | |
628 | ||
b2090919 | 629 | if (acb->canceled != 0) { |
98392453 RS |
630 | return; |
631 | } | |
632 | ||
633 | acb->status = 0; | |
634 | if (status < 0) { | |
635 | error_report("Failed to ioctl(SG_IO) to iSCSI lun. %s", | |
636 | iscsi_get_error(iscsi)); | |
637 | acb->status = -EIO; | |
638 | } | |
639 | ||
640 | acb->ioh->driver_status = 0; | |
641 | acb->ioh->host_status = 0; | |
642 | acb->ioh->resid = 0; | |
643 | ||
644 | #define SG_ERR_DRIVER_SENSE 0x08 | |
645 | ||
646 | if (status == SCSI_STATUS_CHECK_CONDITION && acb->task->datain.size >= 2) { | |
647 | int ss; | |
648 | ||
649 | acb->ioh->driver_status |= SG_ERR_DRIVER_SENSE; | |
650 | ||
651 | acb->ioh->sb_len_wr = acb->task->datain.size - 2; | |
652 | ss = (acb->ioh->mx_sb_len >= acb->ioh->sb_len_wr) ? | |
653 | acb->ioh->mx_sb_len : acb->ioh->sb_len_wr; | |
654 | memcpy(acb->ioh->sbp, &acb->task->datain.data[2], ss); | |
655 | } | |
656 | ||
cfb3f506 | 657 | iscsi_schedule_bh(acb); |
98392453 RS |
658 | } |
659 | ||
660 | static BlockDriverAIOCB *iscsi_aio_ioctl(BlockDriverState *bs, | |
661 | unsigned long int req, void *buf, | |
662 | BlockDriverCompletionFunc *cb, void *opaque) | |
663 | { | |
664 | IscsiLun *iscsilun = bs->opaque; | |
665 | struct iscsi_context *iscsi = iscsilun->iscsi; | |
666 | struct iscsi_data data; | |
667 | IscsiAIOCB *acb; | |
668 | ||
669 | assert(req == SG_IO); | |
670 | ||
d7331bed | 671 | acb = qemu_aio_get(&iscsi_aiocb_info, bs, cb, opaque); |
98392453 RS |
672 | |
673 | acb->iscsilun = iscsilun; | |
674 | acb->canceled = 0; | |
1bd075f2 PB |
675 | acb->bh = NULL; |
676 | acb->status = -EINPROGRESS; | |
98392453 RS |
677 | acb->buf = NULL; |
678 | acb->ioh = buf; | |
679 | ||
680 | acb->task = malloc(sizeof(struct scsi_task)); | |
681 | if (acb->task == NULL) { | |
682 | error_report("iSCSI: Failed to allocate task for scsi command. %s", | |
683 | iscsi_get_error(iscsi)); | |
684 | qemu_aio_release(acb); | |
685 | return NULL; | |
686 | } | |
687 | memset(acb->task, 0, sizeof(struct scsi_task)); | |
688 | ||
689 | switch (acb->ioh->dxfer_direction) { | |
690 | case SG_DXFER_TO_DEV: | |
691 | acb->task->xfer_dir = SCSI_XFER_WRITE; | |
692 | break; | |
693 | case SG_DXFER_FROM_DEV: | |
694 | acb->task->xfer_dir = SCSI_XFER_READ; | |
695 | break; | |
696 | default: | |
697 | acb->task->xfer_dir = SCSI_XFER_NONE; | |
698 | break; | |
699 | } | |
700 | ||
701 | acb->task->cdb_size = acb->ioh->cmd_len; | |
702 | memcpy(&acb->task->cdb[0], acb->ioh->cmdp, acb->ioh->cmd_len); | |
703 | acb->task->expxferlen = acb->ioh->dxfer_len; | |
704 | ||
0a53f010 | 705 | data.size = 0; |
98392453 | 706 | if (acb->task->xfer_dir == SCSI_XFER_WRITE) { |
0a53f010 RS |
707 | if (acb->ioh->iovec_count == 0) { |
708 | data.data = acb->ioh->dxferp; | |
709 | data.size = acb->ioh->dxfer_len; | |
710 | } else { | |
711 | #if defined(LIBISCSI_FEATURE_IOVECTOR) | |
712 | scsi_task_set_iov_out(acb->task, | |
713 | (struct scsi_iovec *) acb->ioh->dxferp, | |
714 | acb->ioh->iovec_count); | |
715 | #else | |
716 | struct iovec *iov = (struct iovec *)acb->ioh->dxferp; | |
717 | ||
718 | acb->buf = g_malloc(acb->ioh->dxfer_len); | |
719 | data.data = acb->buf; | |
720 | data.size = iov_to_buf(iov, acb->ioh->iovec_count, 0, | |
721 | acb->buf, acb->ioh->dxfer_len); | |
722 | #endif | |
723 | } | |
98392453 | 724 | } |
0a53f010 | 725 | |
98392453 RS |
726 | if (iscsi_scsi_command_async(iscsi, iscsilun->lun, acb->task, |
727 | iscsi_aio_ioctl_cb, | |
0a53f010 | 728 | (data.size > 0) ? &data : NULL, |
98392453 RS |
729 | acb) != 0) { |
730 | scsi_free_scsi_task(acb->task); | |
731 | qemu_aio_release(acb); | |
732 | return NULL; | |
733 | } | |
734 | ||
735 | /* tell libiscsi to read straight into the buffer we got from ioctl */ | |
736 | if (acb->task->xfer_dir == SCSI_XFER_READ) { | |
0a53f010 RS |
737 | if (acb->ioh->iovec_count == 0) { |
738 | scsi_task_add_data_in_buffer(acb->task, | |
739 | acb->ioh->dxfer_len, | |
740 | acb->ioh->dxferp); | |
741 | } else { | |
742 | #if defined(LIBISCSI_FEATURE_IOVECTOR) | |
743 | scsi_task_set_iov_in(acb->task, | |
744 | (struct scsi_iovec *) acb->ioh->dxferp, | |
745 | acb->ioh->iovec_count); | |
746 | #else | |
747 | int i; | |
748 | for (i = 0; i < acb->ioh->iovec_count; i++) { | |
749 | struct iovec *iov = (struct iovec *)acb->ioh->dxferp; | |
750 | ||
751 | scsi_task_add_data_in_buffer(acb->task, | |
752 | iov[i].iov_len, | |
753 | iov[i].iov_base); | |
754 | } | |
755 | #endif | |
756 | } | |
98392453 RS |
757 | } |
758 | ||
759 | iscsi_set_events(iscsilun); | |
760 | ||
761 | return &acb->common; | |
762 | } | |
763 | ||
f1a12821 RS |
764 | |
765 | static void ioctl_cb(void *opaque, int status) | |
766 | { | |
767 | int *p_status = opaque; | |
768 | *p_status = status; | |
769 | } | |
770 | ||
98392453 RS |
771 | static int iscsi_ioctl(BlockDriverState *bs, unsigned long int req, void *buf) |
772 | { | |
773 | IscsiLun *iscsilun = bs->opaque; | |
f1a12821 | 774 | int status; |
98392453 RS |
775 | |
776 | switch (req) { | |
777 | case SG_GET_VERSION_NUM: | |
778 | *(int *)buf = 30000; | |
779 | break; | |
780 | case SG_GET_SCSI_ID: | |
781 | ((struct sg_scsi_id *)buf)->scsi_type = iscsilun->type; | |
782 | break; | |
f1a12821 RS |
783 | case SG_IO: |
784 | status = -EINPROGRESS; | |
785 | iscsi_aio_ioctl(bs, req, buf, ioctl_cb, &status); | |
786 | ||
787 | while (status == -EINPROGRESS) { | |
788 | qemu_aio_wait(); | |
789 | } | |
790 | ||
791 | return 0; | |
98392453 RS |
792 | default: |
793 | return -1; | |
794 | } | |
795 | return 0; | |
796 | } | |
797 | #endif | |
798 | ||
c589b249 RS |
799 | static int64_t |
800 | iscsi_getlength(BlockDriverState *bs) | |
801 | { | |
802 | IscsiLun *iscsilun = bs->opaque; | |
803 | int64_t len; | |
804 | ||
805 | len = iscsilun->num_blocks; | |
806 | len *= iscsilun->block_size; | |
807 | ||
808 | return len; | |
809 | } | |
810 | ||
65f3e339 PL |
811 | static int |
812 | coroutine_fn iscsi_co_discard(BlockDriverState *bs, int64_t sector_num, | |
813 | int nb_sectors) | |
814 | { | |
815 | IscsiLun *iscsilun = bs->opaque; | |
816 | struct IscsiTask iTask; | |
817 | struct unmap_list list; | |
65f3e339 PL |
818 | |
819 | if (!is_request_lun_aligned(sector_num, nb_sectors, iscsilun)) { | |
820 | return -EINVAL; | |
821 | } | |
822 | ||
823 | if (!iscsilun->lbp.lbpu) { | |
824 | /* UNMAP is not supported by the target */ | |
825 | return 0; | |
826 | } | |
827 | ||
828 | list.lba = sector_qemu2lun(sector_num, iscsilun); | |
01a6a238 | 829 | list.num = sector_qemu2lun(nb_sectors, iscsilun); |
65f3e339 | 830 | |
01a6a238 | 831 | iscsi_co_init_iscsitask(iscsilun, &iTask); |
65f3e339 | 832 | retry: |
01a6a238 PL |
833 | if (iscsi_unmap_task(iscsilun->iscsi, iscsilun->lun, 0, 0, &list, 1, |
834 | iscsi_co_generic_cb, &iTask) == NULL) { | |
92397116 | 835 | return -ENOMEM; |
01a6a238 | 836 | } |
65f3e339 | 837 | |
01a6a238 PL |
838 | while (!iTask.complete) { |
839 | iscsi_set_events(iscsilun); | |
840 | qemu_coroutine_yield(); | |
841 | } | |
65f3e339 | 842 | |
01a6a238 PL |
843 | if (iTask.task != NULL) { |
844 | scsi_free_scsi_task(iTask.task); | |
845 | iTask.task = NULL; | |
846 | } | |
65f3e339 | 847 | |
01a6a238 | 848 | if (iTask.do_retry) { |
837c3901 | 849 | iTask.complete = 0; |
01a6a238 PL |
850 | goto retry; |
851 | } | |
65f3e339 | 852 | |
01a6a238 PL |
853 | if (iTask.status == SCSI_STATUS_CHECK_CONDITION) { |
854 | /* the target might fail with a check condition if it | |
855 | is not happy with the alignment of the UNMAP request | |
856 | we silently fail in this case */ | |
857 | return 0; | |
858 | } | |
65f3e339 | 859 | |
01a6a238 PL |
860 | if (iTask.status != SCSI_STATUS_GOOD) { |
861 | return -EIO; | |
65f3e339 PL |
862 | } |
863 | ||
b03c3805 PL |
864 | iscsi_allocationmap_clear(iscsilun, sector_num, nb_sectors); |
865 | ||
65f3e339 PL |
866 | return 0; |
867 | } | |
868 | ||
d4cd9615 PL |
869 | #if defined(SCSI_SENSE_ASCQ_CAPACITY_DATA_HAS_CHANGED) |
870 | ||
871 | static int | |
872 | coroutine_fn iscsi_co_write_zeroes(BlockDriverState *bs, int64_t sector_num, | |
873 | int nb_sectors, BdrvRequestFlags flags) | |
874 | { | |
875 | IscsiLun *iscsilun = bs->opaque; | |
876 | struct IscsiTask iTask; | |
877 | uint64_t lba; | |
878 | uint32_t nb_blocks; | |
879 | ||
880 | if (!is_request_lun_aligned(sector_num, nb_sectors, iscsilun)) { | |
881 | return -EINVAL; | |
882 | } | |
883 | ||
dbe5c58f PL |
884 | if ((flags & BDRV_REQ_MAY_UNMAP) && !iscsilun->lbp.lbpws) { |
885 | /* WRITE SAME with UNMAP is not supported by the target, | |
886 | * fall back and try WRITE SAME without UNMAP */ | |
887 | flags &= ~BDRV_REQ_MAY_UNMAP; | |
fa6252b0 PB |
888 | } |
889 | ||
dbe5c58f PL |
890 | if (!(flags & BDRV_REQ_MAY_UNMAP) && !iscsilun->has_write_same) { |
891 | /* WRITE SAME without UNMAP is not supported by the target */ | |
d4cd9615 PL |
892 | return -ENOTSUP; |
893 | } | |
894 | ||
895 | lba = sector_qemu2lun(sector_num, iscsilun); | |
896 | nb_blocks = sector_qemu2lun(nb_sectors, iscsilun); | |
897 | ||
898 | if (iscsilun->zeroblock == NULL) { | |
899 | iscsilun->zeroblock = g_malloc0(iscsilun->block_size); | |
900 | } | |
901 | ||
902 | iscsi_co_init_iscsitask(iscsilun, &iTask); | |
903 | retry: | |
904 | if (iscsi_writesame16_task(iscsilun->iscsi, iscsilun->lun, lba, | |
905 | iscsilun->zeroblock, iscsilun->block_size, | |
906 | nb_blocks, 0, !!(flags & BDRV_REQ_MAY_UNMAP), | |
907 | 0, 0, iscsi_co_generic_cb, &iTask) == NULL) { | |
92397116 | 908 | return -ENOMEM; |
d4cd9615 PL |
909 | } |
910 | ||
911 | while (!iTask.complete) { | |
912 | iscsi_set_events(iscsilun); | |
913 | qemu_coroutine_yield(); | |
914 | } | |
915 | ||
d9738fd2 PL |
916 | if (iTask.status == SCSI_STATUS_CHECK_CONDITION && |
917 | iTask.task->sense.key == SCSI_SENSE_ILLEGAL_REQUEST && | |
27898a5d PB |
918 | (iTask.task->sense.ascq == SCSI_SENSE_ASCQ_INVALID_OPERATION_CODE || |
919 | iTask.task->sense.ascq == SCSI_SENSE_ASCQ_INVALID_FIELD_IN_CDB)) { | |
d9738fd2 PL |
920 | /* WRITE SAME is not supported by the target */ |
921 | iscsilun->has_write_same = false; | |
922 | scsi_free_scsi_task(iTask.task); | |
923 | return -ENOTSUP; | |
924 | } | |
925 | ||
d4cd9615 PL |
926 | if (iTask.task != NULL) { |
927 | scsi_free_scsi_task(iTask.task); | |
928 | iTask.task = NULL; | |
929 | } | |
930 | ||
931 | if (iTask.do_retry) { | |
837c3901 | 932 | iTask.complete = 0; |
d4cd9615 PL |
933 | goto retry; |
934 | } | |
935 | ||
936 | if (iTask.status != SCSI_STATUS_GOOD) { | |
937 | return -EIO; | |
938 | } | |
939 | ||
b03c3805 PL |
940 | if (flags & BDRV_REQ_MAY_UNMAP) { |
941 | iscsi_allocationmap_clear(iscsilun, sector_num, nb_sectors); | |
942 | } else { | |
943 | iscsi_allocationmap_set(iscsilun, sector_num, nb_sectors); | |
944 | } | |
945 | ||
d4cd9615 PL |
946 | return 0; |
947 | } | |
948 | ||
949 | #endif /* SCSI_SENSE_ASCQ_CAPACITY_DATA_HAS_CHANGED */ | |
950 | ||
f2917853 PB |
951 | static void parse_chap(struct iscsi_context *iscsi, const char *target, |
952 | Error **errp) | |
f9dadc98 RS |
953 | { |
954 | QemuOptsList *list; | |
955 | QemuOpts *opts; | |
956 | const char *user = NULL; | |
957 | const char *password = NULL; | |
958 | ||
959 | list = qemu_find_opts("iscsi"); | |
960 | if (!list) { | |
f2917853 | 961 | return; |
f9dadc98 RS |
962 | } |
963 | ||
964 | opts = qemu_opts_find(list, target); | |
965 | if (opts == NULL) { | |
966 | opts = QTAILQ_FIRST(&list->head); | |
967 | if (!opts) { | |
f2917853 | 968 | return; |
f9dadc98 RS |
969 | } |
970 | } | |
971 | ||
972 | user = qemu_opt_get(opts, "user"); | |
973 | if (!user) { | |
f2917853 | 974 | return; |
f9dadc98 RS |
975 | } |
976 | ||
977 | password = qemu_opt_get(opts, "password"); | |
978 | if (!password) { | |
f2917853 PB |
979 | error_setg(errp, "CHAP username specified but no password was given"); |
980 | return; | |
f9dadc98 RS |
981 | } |
982 | ||
983 | if (iscsi_set_initiator_username_pwd(iscsi, user, password)) { | |
f2917853 | 984 | error_setg(errp, "Failed to set initiator username and password"); |
f9dadc98 | 985 | } |
f9dadc98 RS |
986 | } |
987 | ||
f2917853 PB |
988 | static void parse_header_digest(struct iscsi_context *iscsi, const char *target, |
989 | Error **errp) | |
f9dadc98 RS |
990 | { |
991 | QemuOptsList *list; | |
992 | QemuOpts *opts; | |
993 | const char *digest = NULL; | |
994 | ||
995 | list = qemu_find_opts("iscsi"); | |
996 | if (!list) { | |
997 | return; | |
998 | } | |
999 | ||
1000 | opts = qemu_opts_find(list, target); | |
1001 | if (opts == NULL) { | |
1002 | opts = QTAILQ_FIRST(&list->head); | |
1003 | if (!opts) { | |
1004 | return; | |
1005 | } | |
1006 | } | |
1007 | ||
1008 | digest = qemu_opt_get(opts, "header-digest"); | |
1009 | if (!digest) { | |
1010 | return; | |
1011 | } | |
1012 | ||
1013 | if (!strcmp(digest, "CRC32C")) { | |
1014 | iscsi_set_header_digest(iscsi, ISCSI_HEADER_DIGEST_CRC32C); | |
1015 | } else if (!strcmp(digest, "NONE")) { | |
1016 | iscsi_set_header_digest(iscsi, ISCSI_HEADER_DIGEST_NONE); | |
1017 | } else if (!strcmp(digest, "CRC32C-NONE")) { | |
1018 | iscsi_set_header_digest(iscsi, ISCSI_HEADER_DIGEST_CRC32C_NONE); | |
1019 | } else if (!strcmp(digest, "NONE-CRC32C")) { | |
1020 | iscsi_set_header_digest(iscsi, ISCSI_HEADER_DIGEST_NONE_CRC32C); | |
1021 | } else { | |
f2917853 | 1022 | error_setg(errp, "Invalid header-digest setting : %s", digest); |
f9dadc98 RS |
1023 | } |
1024 | } | |
1025 | ||
1026 | static char *parse_initiator_name(const char *target) | |
1027 | { | |
1028 | QemuOptsList *list; | |
1029 | QemuOpts *opts; | |
5accc840 PB |
1030 | const char *name; |
1031 | char *iscsi_name; | |
1032 | UuidInfo *uuid_info; | |
f9dadc98 RS |
1033 | |
1034 | list = qemu_find_opts("iscsi"); | |
f2ef4a6d PB |
1035 | if (list) { |
1036 | opts = qemu_opts_find(list, target); | |
f9dadc98 | 1037 | if (!opts) { |
f2ef4a6d PB |
1038 | opts = QTAILQ_FIRST(&list->head); |
1039 | } | |
1040 | if (opts) { | |
1041 | name = qemu_opt_get(opts, "initiator-name"); | |
5accc840 PB |
1042 | if (name) { |
1043 | return g_strdup(name); | |
1044 | } | |
f9dadc98 RS |
1045 | } |
1046 | } | |
1047 | ||
5accc840 PB |
1048 | uuid_info = qmp_query_uuid(NULL); |
1049 | if (strcmp(uuid_info->UUID, UUID_NONE) == 0) { | |
1050 | name = qemu_get_vm_name(); | |
f2ef4a6d | 1051 | } else { |
5accc840 | 1052 | name = uuid_info->UUID; |
f9dadc98 | 1053 | } |
5accc840 PB |
1054 | iscsi_name = g_strdup_printf("iqn.2008-11.org.linux-kvm%s%s", |
1055 | name ? ":" : "", name ? name : ""); | |
1056 | qapi_free_UuidInfo(uuid_info); | |
1057 | return iscsi_name; | |
f9dadc98 RS |
1058 | } |
1059 | ||
5b5d34ec PL |
1060 | #if defined(LIBISCSI_FEATURE_NOP_COUNTER) |
1061 | static void iscsi_nop_timed_event(void *opaque) | |
1062 | { | |
1063 | IscsiLun *iscsilun = opaque; | |
1064 | ||
1065 | if (iscsi_get_nops_in_flight(iscsilun->iscsi) > MAX_NOP_FAILURES) { | |
1066 | error_report("iSCSI: NOP timeout. Reconnecting..."); | |
1067 | iscsi_reconnect(iscsilun->iscsi); | |
1068 | } | |
1069 | ||
1070 | if (iscsi_nop_out_async(iscsilun->iscsi, NULL, NULL, 0, NULL) != 0) { | |
1071 | error_report("iSCSI: failed to sent NOP-Out. Disabling NOP messages."); | |
1072 | return; | |
1073 | } | |
1074 | ||
bc72ad67 | 1075 | timer_mod(iscsilun->nop_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + NOP_INTERVAL); |
5b5d34ec PL |
1076 | iscsi_set_events(iscsilun); |
1077 | } | |
1078 | #endif | |
1079 | ||
f2917853 | 1080 | static void iscsi_readcapacity_sync(IscsiLun *iscsilun, Error **errp) |
cb1b83e7 PL |
1081 | { |
1082 | struct scsi_task *task = NULL; | |
1083 | struct scsi_readcapacity10 *rc10 = NULL; | |
1084 | struct scsi_readcapacity16 *rc16 = NULL; | |
cb1b83e7 PL |
1085 | int retries = ISCSI_CMD_RETRIES; |
1086 | ||
1288844e PB |
1087 | do { |
1088 | if (task != NULL) { | |
1089 | scsi_free_scsi_task(task); | |
1090 | task = NULL; | |
cb1b83e7 | 1091 | } |
1288844e PB |
1092 | |
1093 | switch (iscsilun->type) { | |
1094 | case TYPE_DISK: | |
1095 | task = iscsi_readcapacity16_sync(iscsilun->iscsi, iscsilun->lun); | |
1096 | if (task != NULL && task->status == SCSI_STATUS_GOOD) { | |
1097 | rc16 = scsi_datain_unmarshall(task); | |
1098 | if (rc16 == NULL) { | |
f2917853 | 1099 | error_setg(errp, "iSCSI: Failed to unmarshall readcapacity16 data."); |
1288844e PB |
1100 | } else { |
1101 | iscsilun->block_size = rc16->block_length; | |
1102 | iscsilun->num_blocks = rc16->returned_lba + 1; | |
f18a7cbb PL |
1103 | iscsilun->lbpme = rc16->lbpme; |
1104 | iscsilun->lbprz = rc16->lbprz; | |
1288844e PB |
1105 | } |
1106 | } | |
1107 | break; | |
1108 | case TYPE_ROM: | |
1109 | task = iscsi_readcapacity10_sync(iscsilun->iscsi, iscsilun->lun, 0, 0); | |
1110 | if (task != NULL && task->status == SCSI_STATUS_GOOD) { | |
1111 | rc10 = scsi_datain_unmarshall(task); | |
1112 | if (rc10 == NULL) { | |
f2917853 | 1113 | error_setg(errp, "iSCSI: Failed to unmarshall readcapacity10 data."); |
1288844e PB |
1114 | } else { |
1115 | iscsilun->block_size = rc10->block_size; | |
1116 | if (rc10->lba == 0) { | |
1117 | /* blank disk loaded */ | |
1118 | iscsilun->num_blocks = 0; | |
1119 | } else { | |
1120 | iscsilun->num_blocks = rc10->lba + 1; | |
1121 | } | |
1122 | } | |
1123 | } | |
1124 | break; | |
1125 | default: | |
f2917853 | 1126 | return; |
cb1b83e7 | 1127 | } |
1288844e PB |
1128 | } while (task != NULL && task->status == SCSI_STATUS_CHECK_CONDITION |
1129 | && task->sense.key == SCSI_SENSE_UNIT_ATTENTION | |
1130 | && retries-- > 0); | |
cb1b83e7 | 1131 | |
1288844e | 1132 | if (task == NULL || task->status != SCSI_STATUS_GOOD) { |
f2917853 | 1133 | error_setg(errp, "iSCSI: failed to send readcapacity10 command."); |
1288844e | 1134 | } |
cb1b83e7 PL |
1135 | if (task) { |
1136 | scsi_free_scsi_task(task); | |
1137 | } | |
cb1b83e7 PL |
1138 | } |
1139 | ||
60beb341 KW |
1140 | /* TODO Convert to fine grained options */ |
1141 | static QemuOptsList runtime_opts = { | |
1142 | .name = "iscsi", | |
1143 | .head = QTAILQ_HEAD_INITIALIZER(runtime_opts.head), | |
1144 | .desc = { | |
1145 | { | |
1146 | .name = "filename", | |
1147 | .type = QEMU_OPT_STRING, | |
1148 | .help = "URL to the iscsi image", | |
1149 | }, | |
1150 | { /* end of list */ } | |
1151 | }, | |
1152 | }; | |
1153 | ||
35cb1748 | 1154 | static struct scsi_task *iscsi_do_inquiry(struct iscsi_context *iscsi, int lun, |
24d3bd67 | 1155 | int evpd, int pc, void **inq, Error **errp) |
35cb1748 PB |
1156 | { |
1157 | int full_size; | |
1158 | struct scsi_task *task = NULL; | |
1159 | task = iscsi_inquiry_sync(iscsi, lun, evpd, pc, 64); | |
1160 | if (task == NULL || task->status != SCSI_STATUS_GOOD) { | |
1161 | goto fail; | |
1162 | } | |
1163 | full_size = scsi_datain_getfullsize(task); | |
1164 | if (full_size > task->datain.size) { | |
1165 | scsi_free_scsi_task(task); | |
1166 | ||
1167 | /* we need more data for the full list */ | |
1168 | task = iscsi_inquiry_sync(iscsi, lun, evpd, pc, full_size); | |
f18a7cbb PL |
1169 | if (task == NULL || task->status != SCSI_STATUS_GOOD) { |
1170 | goto fail; | |
1171 | } | |
35cb1748 | 1172 | } |
f18a7cbb | 1173 | |
24d3bd67 PL |
1174 | *inq = scsi_datain_unmarshall(task); |
1175 | if (*inq == NULL) { | |
1176 | error_setg(errp, "iSCSI: failed to unmarshall inquiry datain blob"); | |
1177 | goto fail; | |
1178 | } | |
1179 | ||
35cb1748 | 1180 | return task; |
f18a7cbb PL |
1181 | |
1182 | fail: | |
cbee81f6 FZ |
1183 | if (!error_is_set(errp)) { |
1184 | error_setg(errp, "iSCSI: Inquiry command failed : %s", | |
1185 | iscsi_get_error(iscsi)); | |
1186 | } | |
24d3bd67 | 1187 | if (task != NULL) { |
35cb1748 | 1188 | scsi_free_scsi_task(task); |
35cb1748 PB |
1189 | } |
1190 | return NULL; | |
f18a7cbb PL |
1191 | } |
1192 | ||
c589b249 RS |
1193 | /* |
1194 | * We support iscsi url's on the form | |
1195 | * iscsi://[<username>%<password>@]<host>[:<port>]/<targetname>/<lun> | |
28f106af JC |
1196 | * |
1197 | * Note: flags are currently not used by iscsi_open. If this function | |
1198 | * is changed such that flags are used, please examine iscsi_reopen_prepare() | |
1199 | * to see if needs to be changed as well. | |
c589b249 | 1200 | */ |
015a1036 HR |
1201 | static int iscsi_open(BlockDriverState *bs, QDict *options, int flags, |
1202 | Error **errp) | |
c589b249 RS |
1203 | { |
1204 | IscsiLun *iscsilun = bs->opaque; | |
1205 | struct iscsi_context *iscsi = NULL; | |
1206 | struct iscsi_url *iscsi_url = NULL; | |
e829b0bb PL |
1207 | struct scsi_task *task = NULL; |
1208 | struct scsi_inquiry_standard *inq = NULL; | |
24d3bd67 | 1209 | struct scsi_inquiry_supported_pages *inq_vpd; |
f9dadc98 | 1210 | char *initiator_name = NULL; |
60beb341 KW |
1211 | QemuOpts *opts; |
1212 | Error *local_err = NULL; | |
1213 | const char *filename; | |
24d3bd67 | 1214 | int i, ret; |
c589b249 RS |
1215 | |
1216 | if ((BDRV_SECTOR_SIZE % 512) != 0) { | |
f2917853 PB |
1217 | error_setg(errp, "iSCSI: Invalid BDRV_SECTOR_SIZE. " |
1218 | "BDRV_SECTOR_SIZE(%lld) is not a multiple " | |
1219 | "of 512", BDRV_SECTOR_SIZE); | |
c589b249 RS |
1220 | return -EINVAL; |
1221 | } | |
1222 | ||
87ea75d5 | 1223 | opts = qemu_opts_create(&runtime_opts, NULL, 0, &error_abort); |
60beb341 | 1224 | qemu_opts_absorb_qdict(opts, options, &local_err); |
84d18f06 | 1225 | if (local_err) { |
f2917853 | 1226 | error_propagate(errp, local_err); |
60beb341 KW |
1227 | ret = -EINVAL; |
1228 | goto out; | |
1229 | } | |
1230 | ||
1231 | filename = qemu_opt_get(opts, "filename"); | |
1232 | ||
c589b249 RS |
1233 | iscsi_url = iscsi_parse_full_url(iscsi, filename); |
1234 | if (iscsi_url == NULL) { | |
f2917853 | 1235 | error_setg(errp, "Failed to parse URL : %s", filename); |
c589b249 | 1236 | ret = -EINVAL; |
b93c94f7 | 1237 | goto out; |
c589b249 RS |
1238 | } |
1239 | ||
f9dadc98 RS |
1240 | memset(iscsilun, 0, sizeof(IscsiLun)); |
1241 | ||
1242 | initiator_name = parse_initiator_name(iscsi_url->target); | |
1243 | ||
1244 | iscsi = iscsi_create_context(initiator_name); | |
1245 | if (iscsi == NULL) { | |
f2917853 | 1246 | error_setg(errp, "iSCSI: Failed to create iSCSI context."); |
f9dadc98 | 1247 | ret = -ENOMEM; |
b93c94f7 | 1248 | goto out; |
f9dadc98 RS |
1249 | } |
1250 | ||
c589b249 | 1251 | if (iscsi_set_targetname(iscsi, iscsi_url->target)) { |
f2917853 | 1252 | error_setg(errp, "iSCSI: Failed to set target name."); |
c589b249 | 1253 | ret = -EINVAL; |
b93c94f7 | 1254 | goto out; |
c589b249 RS |
1255 | } |
1256 | ||
1257 | if (iscsi_url->user != NULL) { | |
1258 | ret = iscsi_set_initiator_username_pwd(iscsi, iscsi_url->user, | |
1259 | iscsi_url->passwd); | |
1260 | if (ret != 0) { | |
f2917853 | 1261 | error_setg(errp, "Failed to set initiator username and password"); |
c589b249 | 1262 | ret = -EINVAL; |
b93c94f7 | 1263 | goto out; |
c589b249 RS |
1264 | } |
1265 | } | |
f9dadc98 RS |
1266 | |
1267 | /* check if we got CHAP username/password via the options */ | |
f2917853 PB |
1268 | parse_chap(iscsi, iscsi_url->target, &local_err); |
1269 | if (local_err != NULL) { | |
1270 | error_propagate(errp, local_err); | |
f9dadc98 | 1271 | ret = -EINVAL; |
b93c94f7 | 1272 | goto out; |
f9dadc98 RS |
1273 | } |
1274 | ||
c589b249 | 1275 | if (iscsi_set_session_type(iscsi, ISCSI_SESSION_NORMAL) != 0) { |
f2917853 | 1276 | error_setg(errp, "iSCSI: Failed to set session type to normal."); |
c589b249 | 1277 | ret = -EINVAL; |
b93c94f7 | 1278 | goto out; |
c589b249 RS |
1279 | } |
1280 | ||
1281 | iscsi_set_header_digest(iscsi, ISCSI_HEADER_DIGEST_NONE_CRC32C); | |
1282 | ||
f9dadc98 | 1283 | /* check if we got HEADER_DIGEST via the options */ |
f2917853 PB |
1284 | parse_header_digest(iscsi, iscsi_url->target, &local_err); |
1285 | if (local_err != NULL) { | |
1286 | error_propagate(errp, local_err); | |
1287 | ret = -EINVAL; | |
1288 | goto out; | |
1289 | } | |
f9dadc98 | 1290 | |
e829b0bb | 1291 | if (iscsi_full_connect_sync(iscsi, iscsi_url->portal, iscsi_url->lun) != 0) { |
f2917853 | 1292 | error_setg(errp, "iSCSI: Failed to connect to LUN : %s", |
e829b0bb PL |
1293 | iscsi_get_error(iscsi)); |
1294 | ret = -EINVAL; | |
1295 | goto out; | |
1296 | } | |
c589b249 RS |
1297 | |
1298 | iscsilun->iscsi = iscsi; | |
1299 | iscsilun->lun = iscsi_url->lun; | |
24d3bd67 | 1300 | iscsilun->has_write_same = true; |
c589b249 | 1301 | |
24d3bd67 PL |
1302 | task = iscsi_do_inquiry(iscsilun->iscsi, iscsilun->lun, 0, 0, |
1303 | (void **) &inq, errp); | |
1304 | if (task == NULL) { | |
c589b249 | 1305 | ret = -EINVAL; |
b93c94f7 | 1306 | goto out; |
c589b249 | 1307 | } |
e829b0bb | 1308 | iscsilun->type = inq->periperal_device_type; |
24d3bd67 PL |
1309 | scsi_free_scsi_task(task); |
1310 | task = NULL; | |
e829b0bb | 1311 | |
f2917853 PB |
1312 | iscsi_readcapacity_sync(iscsilun, &local_err); |
1313 | if (local_err != NULL) { | |
1314 | error_propagate(errp, local_err); | |
cd82b6fb | 1315 | ret = -EINVAL; |
cb1b83e7 | 1316 | goto out; |
e829b0bb | 1317 | } |
0777b5dd | 1318 | bs->total_sectors = sector_lun2qemu(iscsilun->num_blocks, iscsilun); |
2c9880c4 | 1319 | bs->request_alignment = iscsilun->block_size; |
e829b0bb | 1320 | |
f47c3f5a KW |
1321 | /* We don't have any emulation for devices other than disks and CD-ROMs, so |
1322 | * this must be sg ioctl compatible. We force it to be sg, otherwise qemu | |
1323 | * will try to read from the device to guess the image format. | |
622695a4 | 1324 | */ |
f47c3f5a | 1325 | if (iscsilun->type != TYPE_DISK && iscsilun->type != TYPE_ROM) { |
622695a4 RS |
1326 | bs->sg = 1; |
1327 | } | |
1328 | ||
24d3bd67 PL |
1329 | task = iscsi_do_inquiry(iscsilun->iscsi, iscsilun->lun, 1, |
1330 | SCSI_INQUIRY_PAGECODE_SUPPORTED_VPD_PAGES, | |
1331 | (void **) &inq_vpd, errp); | |
1332 | if (task == NULL) { | |
1333 | ret = -EINVAL; | |
1334 | goto out; | |
f18a7cbb | 1335 | } |
24d3bd67 PL |
1336 | for (i = 0; i < inq_vpd->num_pages; i++) { |
1337 | struct scsi_task *inq_task; | |
1338 | struct scsi_inquiry_logical_block_provisioning *inq_lbp; | |
f18a7cbb | 1339 | struct scsi_inquiry_block_limits *inq_bl; |
24d3bd67 PL |
1340 | switch (inq_vpd->pages[i]) { |
1341 | case SCSI_INQUIRY_PAGECODE_LOGICAL_BLOCK_PROVISIONING: | |
1342 | inq_task = iscsi_do_inquiry(iscsilun->iscsi, iscsilun->lun, 1, | |
1343 | SCSI_INQUIRY_PAGECODE_LOGICAL_BLOCK_PROVISIONING, | |
1344 | (void **) &inq_lbp, errp); | |
1345 | if (inq_task == NULL) { | |
1346 | ret = -EINVAL; | |
1347 | goto out; | |
1348 | } | |
1349 | memcpy(&iscsilun->lbp, inq_lbp, | |
1350 | sizeof(struct scsi_inquiry_logical_block_provisioning)); | |
1351 | scsi_free_scsi_task(inq_task); | |
1352 | break; | |
1353 | case SCSI_INQUIRY_PAGECODE_BLOCK_LIMITS: | |
1354 | inq_task = iscsi_do_inquiry(iscsilun->iscsi, iscsilun->lun, 1, | |
1355 | SCSI_INQUIRY_PAGECODE_BLOCK_LIMITS, | |
1356 | (void **) &inq_bl, errp); | |
1357 | if (inq_task == NULL) { | |
1358 | ret = -EINVAL; | |
1359 | goto out; | |
1360 | } | |
1361 | memcpy(&iscsilun->bl, inq_bl, | |
1362 | sizeof(struct scsi_inquiry_block_limits)); | |
1363 | scsi_free_scsi_task(inq_task); | |
1364 | break; | |
1365 | default: | |
1366 | break; | |
f18a7cbb | 1367 | } |
f18a7cbb | 1368 | } |
24d3bd67 PL |
1369 | scsi_free_scsi_task(task); |
1370 | task = NULL; | |
f18a7cbb | 1371 | |
5b5d34ec PL |
1372 | #if defined(LIBISCSI_FEATURE_NOP_COUNTER) |
1373 | /* Set up a timer for sending out iSCSI NOPs */ | |
bc72ad67 AB |
1374 | iscsilun->nop_timer = timer_new_ms(QEMU_CLOCK_REALTIME, iscsi_nop_timed_event, iscsilun); |
1375 | timer_mod(iscsilun->nop_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + NOP_INTERVAL); | |
5b5d34ec PL |
1376 | #endif |
1377 | ||
b03c3805 PL |
1378 | /* Guess the internal cluster (page) size of the iscsi target by the means |
1379 | * of opt_unmap_gran. Transfer the unmap granularity only if it has a | |
1380 | * reasonable size */ | |
1381 | if (iscsilun->bl.opt_unmap_gran * iscsilun->block_size >= 64 * 1024 && | |
1382 | iscsilun->bl.opt_unmap_gran * iscsilun->block_size <= 16 * 1024 * 1024) { | |
1383 | iscsilun->cluster_sectors = (iscsilun->bl.opt_unmap_gran * | |
1384 | iscsilun->block_size) >> BDRV_SECTOR_BITS; | |
1385 | #if defined(LIBISCSI_FEATURE_IOVECTOR) | |
1386 | if (iscsilun->lbprz && !(bs->open_flags & BDRV_O_NOCACHE)) { | |
1387 | iscsilun->allocationmap = | |
1388 | bitmap_new(DIV_ROUND_UP(bs->total_sectors, | |
1389 | iscsilun->cluster_sectors)); | |
1390 | } | |
1391 | #endif | |
1392 | } | |
1393 | ||
b93c94f7 | 1394 | out: |
60beb341 | 1395 | qemu_opts_del(opts); |
f9dadc98 RS |
1396 | if (initiator_name != NULL) { |
1397 | g_free(initiator_name); | |
1398 | } | |
c589b249 RS |
1399 | if (iscsi_url != NULL) { |
1400 | iscsi_destroy_url(iscsi_url); | |
1401 | } | |
e829b0bb PL |
1402 | if (task != NULL) { |
1403 | scsi_free_scsi_task(task); | |
1404 | } | |
b93c94f7 PB |
1405 | |
1406 | if (ret) { | |
1407 | if (iscsi != NULL) { | |
1408 | iscsi_destroy_context(iscsi); | |
1409 | } | |
1410 | memset(iscsilun, 0, sizeof(IscsiLun)); | |
c589b249 | 1411 | } |
c589b249 RS |
1412 | return ret; |
1413 | } | |
1414 | ||
1415 | static void iscsi_close(BlockDriverState *bs) | |
1416 | { | |
1417 | IscsiLun *iscsilun = bs->opaque; | |
1418 | struct iscsi_context *iscsi = iscsilun->iscsi; | |
1419 | ||
5b5d34ec | 1420 | if (iscsilun->nop_timer) { |
bc72ad67 AB |
1421 | timer_del(iscsilun->nop_timer); |
1422 | timer_free(iscsilun->nop_timer); | |
5b5d34ec | 1423 | } |
f2e5dca4 | 1424 | qemu_aio_set_fd_handler(iscsi_get_fd(iscsi), NULL, NULL, NULL); |
c589b249 | 1425 | iscsi_destroy_context(iscsi); |
d4cd9615 | 1426 | g_free(iscsilun->zeroblock); |
b03c3805 | 1427 | g_free(iscsilun->allocationmap); |
c589b249 RS |
1428 | memset(iscsilun, 0, sizeof(IscsiLun)); |
1429 | } | |
1430 | ||
d34682cd KW |
1431 | static int iscsi_refresh_limits(BlockDriverState *bs) |
1432 | { | |
1433 | IscsiLun *iscsilun = bs->opaque; | |
1434 | ||
1435 | /* We don't actually refresh here, but just return data queried in | |
1436 | * iscsi_open(): iscsi targets don't change their limits. */ | |
c97ca29d | 1437 | if (iscsilun->lbp.lbpu) { |
d34682cd KW |
1438 | if (iscsilun->bl.max_unmap < 0xffffffff) { |
1439 | bs->bl.max_discard = sector_lun2qemu(iscsilun->bl.max_unmap, | |
1440 | iscsilun); | |
1441 | } | |
1442 | bs->bl.discard_alignment = sector_lun2qemu(iscsilun->bl.opt_unmap_gran, | |
1443 | iscsilun); | |
c97ca29d | 1444 | } |
d34682cd | 1445 | |
c97ca29d PB |
1446 | if (iscsilun->bl.max_ws_len < 0xffffffff) { |
1447 | bs->bl.max_write_zeroes = sector_lun2qemu(iscsilun->bl.max_ws_len, | |
1448 | iscsilun); | |
1449 | } | |
1450 | if (iscsilun->lbp.lbpws) { | |
d34682cd KW |
1451 | bs->bl.write_zeroes_alignment = sector_lun2qemu(iscsilun->bl.opt_unmap_gran, |
1452 | iscsilun); | |
d34682cd | 1453 | } |
5d259fc7 PL |
1454 | bs->bl.opt_transfer_length = sector_lun2qemu(iscsilun->bl.opt_xfer_len, |
1455 | iscsilun); | |
e9f526ab AL |
1456 | return 0; |
1457 | } | |
d34682cd | 1458 | |
28f106af JC |
1459 | /* Since iscsi_open() ignores bdrv_flags, there is nothing to do here in |
1460 | * prepare. Note that this will not re-establish a connection with an iSCSI | |
1461 | * target - it is effectively a NOP. */ | |
dc6afb99 JC |
1462 | static int iscsi_reopen_prepare(BDRVReopenState *state, |
1463 | BlockReopenQueue *queue, Error **errp) | |
1464 | { | |
28f106af | 1465 | /* NOP */ |
d34682cd KW |
1466 | return 0; |
1467 | } | |
1468 | ||
cb1b83e7 PL |
1469 | static int iscsi_truncate(BlockDriverState *bs, int64_t offset) |
1470 | { | |
1471 | IscsiLun *iscsilun = bs->opaque; | |
f2917853 | 1472 | Error *local_err = NULL; |
cb1b83e7 PL |
1473 | |
1474 | if (iscsilun->type != TYPE_DISK) { | |
1475 | return -ENOTSUP; | |
1476 | } | |
1477 | ||
f2917853 PB |
1478 | iscsi_readcapacity_sync(iscsilun, &local_err); |
1479 | if (local_err != NULL) { | |
1480 | error_free(local_err); | |
1481 | return -EIO; | |
cb1b83e7 PL |
1482 | } |
1483 | ||
1484 | if (offset > iscsi_getlength(bs)) { | |
1485 | return -EINVAL; | |
1486 | } | |
1487 | ||
b03c3805 PL |
1488 | if (iscsilun->allocationmap != NULL) { |
1489 | g_free(iscsilun->allocationmap); | |
1490 | iscsilun->allocationmap = | |
1491 | bitmap_new(DIV_ROUND_UP(bs->total_sectors, | |
1492 | iscsilun->cluster_sectors)); | |
1493 | } | |
1494 | ||
cb1b83e7 PL |
1495 | return 0; |
1496 | } | |
1497 | ||
d5124c00 HR |
1498 | static int iscsi_create(const char *filename, QEMUOptionParameter *options, |
1499 | Error **errp) | |
de8864e5 PL |
1500 | { |
1501 | int ret = 0; | |
1502 | int64_t total_size = 0; | |
13c91cb7 | 1503 | BlockDriverState *bs; |
de8864e5 | 1504 | IscsiLun *iscsilun = NULL; |
60beb341 | 1505 | QDict *bs_options; |
de8864e5 | 1506 | |
98522f63 | 1507 | bs = bdrv_new("", &error_abort); |
de8864e5 PL |
1508 | |
1509 | /* Read out options */ | |
1510 | while (options && options->name) { | |
1511 | if (!strcmp(options->name, "size")) { | |
1512 | total_size = options->value.n / BDRV_SECTOR_SIZE; | |
1513 | } | |
1514 | options++; | |
1515 | } | |
1516 | ||
13c91cb7 FZ |
1517 | bs->opaque = g_malloc0(sizeof(struct IscsiLun)); |
1518 | iscsilun = bs->opaque; | |
de8864e5 | 1519 | |
60beb341 KW |
1520 | bs_options = qdict_new(); |
1521 | qdict_put(bs_options, "filename", qstring_from_str(filename)); | |
015a1036 | 1522 | ret = iscsi_open(bs, bs_options, 0, NULL); |
60beb341 KW |
1523 | QDECREF(bs_options); |
1524 | ||
de8864e5 PL |
1525 | if (ret != 0) { |
1526 | goto out; | |
1527 | } | |
5b5d34ec | 1528 | if (iscsilun->nop_timer) { |
bc72ad67 AB |
1529 | timer_del(iscsilun->nop_timer); |
1530 | timer_free(iscsilun->nop_timer); | |
5b5d34ec | 1531 | } |
de8864e5 PL |
1532 | if (iscsilun->type != TYPE_DISK) { |
1533 | ret = -ENODEV; | |
1534 | goto out; | |
1535 | } | |
13c91cb7 | 1536 | if (bs->total_sectors < total_size) { |
de8864e5 | 1537 | ret = -ENOSPC; |
d3bda7bc | 1538 | goto out; |
de8864e5 PL |
1539 | } |
1540 | ||
1541 | ret = 0; | |
1542 | out: | |
1543 | if (iscsilun->iscsi != NULL) { | |
1544 | iscsi_destroy_context(iscsilun->iscsi); | |
1545 | } | |
13c91cb7 FZ |
1546 | g_free(bs->opaque); |
1547 | bs->opaque = NULL; | |
4f6fd349 | 1548 | bdrv_unref(bs); |
de8864e5 PL |
1549 | return ret; |
1550 | } | |
1551 | ||
186d4f2b PL |
1552 | static int iscsi_get_info(BlockDriverState *bs, BlockDriverInfo *bdi) |
1553 | { | |
1554 | IscsiLun *iscsilun = bs->opaque; | |
1555 | bdi->unallocated_blocks_are_zero = !!iscsilun->lbprz; | |
1556 | bdi->can_write_zeroes_with_unmap = iscsilun->lbprz && iscsilun->lbp.lbpws; | |
b03c3805 | 1557 | bdi->cluster_size = iscsilun->cluster_sectors * BDRV_SECTOR_SIZE; |
186d4f2b PL |
1558 | return 0; |
1559 | } | |
1560 | ||
de8864e5 PL |
1561 | static QEMUOptionParameter iscsi_create_options[] = { |
1562 | { | |
1563 | .name = BLOCK_OPT_SIZE, | |
1564 | .type = OPT_SIZE, | |
1565 | .help = "Virtual disk size" | |
1566 | }, | |
1567 | { NULL } | |
1568 | }; | |
1569 | ||
c589b249 RS |
1570 | static BlockDriver bdrv_iscsi = { |
1571 | .format_name = "iscsi", | |
1572 | .protocol_name = "iscsi", | |
1573 | ||
1574 | .instance_size = sizeof(IscsiLun), | |
030be321 | 1575 | .bdrv_needs_filename = true, |
c589b249 RS |
1576 | .bdrv_file_open = iscsi_open, |
1577 | .bdrv_close = iscsi_close, | |
de8864e5 PL |
1578 | .bdrv_create = iscsi_create, |
1579 | .create_options = iscsi_create_options, | |
dc6afb99 | 1580 | .bdrv_reopen_prepare = iscsi_reopen_prepare, |
c589b249 RS |
1581 | |
1582 | .bdrv_getlength = iscsi_getlength, | |
186d4f2b | 1583 | .bdrv_get_info = iscsi_get_info, |
cb1b83e7 | 1584 | .bdrv_truncate = iscsi_truncate, |
d34682cd | 1585 | .bdrv_refresh_limits = iscsi_refresh_limits, |
c589b249 | 1586 | |
24c7608a | 1587 | #if defined(LIBISCSI_FEATURE_IOVECTOR) |
54a5c1d5 | 1588 | .bdrv_co_get_block_status = iscsi_co_get_block_status, |
f35c934a | 1589 | #endif |
65f3e339 | 1590 | .bdrv_co_discard = iscsi_co_discard, |
d4cd9615 PL |
1591 | #if defined(SCSI_SENSE_ASCQ_CAPACITY_DATA_HAS_CHANGED) |
1592 | .bdrv_co_write_zeroes = iscsi_co_write_zeroes, | |
1593 | #endif | |
063c3378 PL |
1594 | .bdrv_co_readv = iscsi_co_readv, |
1595 | .bdrv_co_writev = iscsi_co_writev, | |
1596 | .bdrv_co_flush_to_disk = iscsi_co_flush, | |
fa6acb0c | 1597 | |
98392453 RS |
1598 | #ifdef __linux__ |
1599 | .bdrv_ioctl = iscsi_ioctl, | |
1600 | .bdrv_aio_ioctl = iscsi_aio_ioctl, | |
1601 | #endif | |
c589b249 RS |
1602 | }; |
1603 | ||
4d454574 PB |
1604 | static QemuOptsList qemu_iscsi_opts = { |
1605 | .name = "iscsi", | |
1606 | .head = QTAILQ_HEAD_INITIALIZER(qemu_iscsi_opts.head), | |
1607 | .desc = { | |
1608 | { | |
1609 | .name = "user", | |
1610 | .type = QEMU_OPT_STRING, | |
1611 | .help = "username for CHAP authentication to target", | |
1612 | },{ | |
1613 | .name = "password", | |
1614 | .type = QEMU_OPT_STRING, | |
1615 | .help = "password for CHAP authentication to target", | |
1616 | },{ | |
1617 | .name = "header-digest", | |
1618 | .type = QEMU_OPT_STRING, | |
1619 | .help = "HeaderDigest setting. " | |
1620 | "{CRC32C|CRC32C-NONE|NONE-CRC32C|NONE}", | |
1621 | },{ | |
1622 | .name = "initiator-name", | |
1623 | .type = QEMU_OPT_STRING, | |
1624 | .help = "Initiator iqn name to use when connecting", | |
1625 | }, | |
1626 | { /* end of list */ } | |
1627 | }, | |
1628 | }; | |
1629 | ||
c589b249 RS |
1630 | static void iscsi_block_init(void) |
1631 | { | |
1632 | bdrv_register(&bdrv_iscsi); | |
4d454574 | 1633 | qemu_add_opts(&qemu_iscsi_opts); |
c589b249 RS |
1634 | } |
1635 | ||
1636 | block_init(iscsi_block_init); |