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Commit | Line | Data |
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c589b249 RS |
1 | /* |
2 | * QEMU Block driver for iSCSI images | |
3 | * | |
4 | * Copyright (c) 2010-2011 Ronnie Sahlberg <ronniesahlberg@gmail.com> | |
03e40fef | 5 | * Copyright (c) 2012-2015 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 | ||
80c71a24 | 26 | #include "qemu/osdep.h" |
c589b249 RS |
27 | |
28 | #include <poll.h> | |
efc6de0d | 29 | #include <math.h> |
f4dfa67f | 30 | #include <arpa/inet.h> |
c589b249 | 31 | #include "qemu-common.h" |
1de7afc9 PB |
32 | #include "qemu/config-file.h" |
33 | #include "qemu/error-report.h" | |
b03c3805 PL |
34 | #include "qemu/bitops.h" |
35 | #include "qemu/bitmap.h" | |
737e150e | 36 | #include "block/block_int.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" | |
d49b6836 | 41 | #include "qapi/qmp/qstring.h" |
b189346e | 42 | #include "crypto/secret.h" |
c589b249 RS |
43 | |
44 | #include <iscsi/iscsi.h> | |
45 | #include <iscsi/scsi-lowlevel.h> | |
46 | ||
98392453 RS |
47 | #ifdef __linux__ |
48 | #include <scsi/sg.h> | |
0d09e41a | 49 | #include <block/scsi.h> |
98392453 | 50 | #endif |
c589b249 RS |
51 | |
52 | typedef struct IscsiLun { | |
53 | struct iscsi_context *iscsi; | |
80cf6257 | 54 | AioContext *aio_context; |
c589b249 | 55 | int lun; |
dbfff6d7 | 56 | enum scsi_inquiry_peripheral_device_type type; |
c589b249 | 57 | int block_size; |
c7b4a952 | 58 | uint64_t num_blocks; |
c9b9f682 | 59 | int events; |
5b5d34ec | 60 | QEMUTimer *nop_timer; |
05b685fb | 61 | QEMUTimer *event_timer; |
f18a7cbb PL |
62 | struct scsi_inquiry_logical_block_provisioning lbp; |
63 | struct scsi_inquiry_block_limits bl; | |
d4cd9615 | 64 | unsigned char *zeroblock; |
b03c3805 PL |
65 | unsigned long *allocationmap; |
66 | int cluster_sectors; | |
9281fe9e | 67 | bool use_16_for_rw; |
43ae8fb1 | 68 | bool write_protected; |
0a386e48 PL |
69 | bool lbpme; |
70 | bool lbprz; | |
752ce451 | 71 | bool dpofua; |
0a386e48 | 72 | bool has_write_same; |
5dd7a535 | 73 | bool request_timed_out; |
c589b249 RS |
74 | } IscsiLun; |
75 | ||
54a5c1d5 PL |
76 | typedef struct IscsiTask { |
77 | int status; | |
78 | int complete; | |
79 | int retries; | |
80 | int do_retry; | |
81 | struct scsi_task *task; | |
82 | Coroutine *co; | |
8b9dfe90 | 83 | QEMUBH *bh; |
80cf6257 | 84 | IscsiLun *iscsilun; |
efc6de0d | 85 | QEMUTimer retry_timer; |
e01dd3da | 86 | int err_code; |
54a5c1d5 PL |
87 | } IscsiTask; |
88 | ||
c589b249 | 89 | typedef struct IscsiAIOCB { |
7c84b1b8 | 90 | BlockAIOCB common; |
c589b249 RS |
91 | QEMUIOVector *qiov; |
92 | QEMUBH *bh; | |
93 | IscsiLun *iscsilun; | |
94 | struct scsi_task *task; | |
95 | uint8_t *buf; | |
96 | int status; | |
1dde716e PL |
97 | int64_t sector_num; |
98 | int nb_sectors; | |
4bb17ab5 | 99 | int ret; |
98392453 RS |
100 | #ifdef __linux__ |
101 | sg_io_hdr_t *ioh; | |
102 | #endif | |
c589b249 RS |
103 | } IscsiAIOCB; |
104 | ||
5dd7a535 PL |
105 | /* libiscsi uses time_t so its enough to process events every second */ |
106 | #define EVENT_INTERVAL 1000 | |
5b5d34ec PL |
107 | #define NOP_INTERVAL 5000 |
108 | #define MAX_NOP_FAILURES 3 | |
efc6de0d | 109 | #define ISCSI_CMD_RETRIES ARRAY_SIZE(iscsi_retry_times) |
59dd0a22 | 110 | static const unsigned iscsi_retry_times[] = {8, 32, 128, 512, 2048, 8192, 32768}; |
5b5d34ec | 111 | |
5d831be2 | 112 | /* this threshold is a trade-off knob to choose between |
5917af81 PL |
113 | * the potential additional overhead of an extra GET_LBA_STATUS request |
114 | * vs. unnecessarily reading a lot of zero sectors over the wire. | |
115 | * If a read request is greater or equal than ISCSI_CHECKALLOC_THRES | |
116 | * sectors we check the allocation status of the area covered by the | |
117 | * request first if the allocationmap indicates that the area might be | |
118 | * unallocated. */ | |
119 | #define ISCSI_CHECKALLOC_THRES 64 | |
5b5d34ec | 120 | |
27cbd828 | 121 | static void |
cfb3f506 | 122 | iscsi_bh_cb(void *p) |
27cbd828 PB |
123 | { |
124 | IscsiAIOCB *acb = p; | |
125 | ||
126 | qemu_bh_delete(acb->bh); | |
127 | ||
4790b03d PB |
128 | g_free(acb->buf); |
129 | acb->buf = NULL; | |
130 | ||
722d9333 | 131 | acb->common.cb(acb->common.opaque, acb->status); |
27cbd828 | 132 | |
1bd075f2 PB |
133 | if (acb->task != NULL) { |
134 | scsi_free_scsi_task(acb->task); | |
135 | acb->task = NULL; | |
136 | } | |
137 | ||
8007429a | 138 | qemu_aio_unref(acb); |
27cbd828 PB |
139 | } |
140 | ||
cfb3f506 PB |
141 | static void |
142 | iscsi_schedule_bh(IscsiAIOCB *acb) | |
27cbd828 | 143 | { |
1bd075f2 PB |
144 | if (acb->bh) { |
145 | return; | |
146 | } | |
80cf6257 | 147 | acb->bh = aio_bh_new(acb->iscsilun->aio_context, iscsi_bh_cb, acb); |
27cbd828 | 148 | qemu_bh_schedule(acb->bh); |
27cbd828 PB |
149 | } |
150 | ||
8b9dfe90 PL |
151 | static void iscsi_co_generic_bh_cb(void *opaque) |
152 | { | |
153 | struct IscsiTask *iTask = opaque; | |
fcd470d8 | 154 | iTask->complete = 1; |
8b9dfe90 PL |
155 | qemu_bh_delete(iTask->bh); |
156 | qemu_coroutine_enter(iTask->co, NULL); | |
157 | } | |
158 | ||
efc6de0d PL |
159 | static void iscsi_retry_timer_expired(void *opaque) |
160 | { | |
161 | struct IscsiTask *iTask = opaque; | |
fcd470d8 | 162 | iTask->complete = 1; |
efc6de0d PL |
163 | if (iTask->co) { |
164 | qemu_coroutine_enter(iTask->co, NULL); | |
165 | } | |
166 | } | |
167 | ||
168 | static inline unsigned exp_random(double mean) | |
169 | { | |
170 | return -mean * log((double)rand() / RAND_MAX); | |
171 | } | |
172 | ||
e01dd3da FZ |
173 | /* SCSI_SENSE_ASCQ_INVALID_FIELD_IN_PARAMETER_LIST was introduced in |
174 | * libiscsi 1.10.0, together with other constants we need. Use it as | |
175 | * a hint that we have to define them ourselves if needed, to keep the | |
176 | * minimum required libiscsi version at 1.9.0. We use an ASCQ macro for | |
177 | * the test because SCSI_STATUS_* is an enum. | |
178 | * | |
179 | * To guard against future changes where SCSI_SENSE_ASCQ_* also becomes | |
180 | * an enum, check against the LIBISCSI_API_VERSION macro, which was | |
181 | * introduced in 1.11.0. If it is present, there is no need to define | |
182 | * anything. | |
183 | */ | |
184 | #if !defined(SCSI_SENSE_ASCQ_INVALID_FIELD_IN_PARAMETER_LIST) && \ | |
185 | !defined(LIBISCSI_API_VERSION) | |
186 | #define SCSI_STATUS_TASK_SET_FULL 0x28 | |
187 | #define SCSI_STATUS_TIMEOUT 0x0f000002 | |
188 | #define SCSI_SENSE_ASCQ_INVALID_FIELD_IN_PARAMETER_LIST 0x2600 | |
189 | #define SCSI_SENSE_ASCQ_PARAMETER_LIST_LENGTH_ERROR 0x1a00 | |
9049736e PL |
190 | #endif |
191 | ||
e01dd3da FZ |
192 | static int iscsi_translate_sense(struct scsi_sense *sense) |
193 | { | |
194 | int ret; | |
195 | ||
196 | switch (sense->key) { | |
197 | case SCSI_SENSE_NOT_READY: | |
198 | return -EBUSY; | |
199 | case SCSI_SENSE_DATA_PROTECTION: | |
200 | return -EACCES; | |
201 | case SCSI_SENSE_COMMAND_ABORTED: | |
202 | return -ECANCELED; | |
203 | case SCSI_SENSE_ILLEGAL_REQUEST: | |
204 | /* Parse ASCQ */ | |
205 | break; | |
206 | default: | |
207 | return -EIO; | |
208 | } | |
209 | switch (sense->ascq) { | |
210 | case SCSI_SENSE_ASCQ_PARAMETER_LIST_LENGTH_ERROR: | |
211 | case SCSI_SENSE_ASCQ_INVALID_OPERATION_CODE: | |
212 | case SCSI_SENSE_ASCQ_INVALID_FIELD_IN_CDB: | |
213 | case SCSI_SENSE_ASCQ_INVALID_FIELD_IN_PARAMETER_LIST: | |
214 | ret = -EINVAL; | |
215 | break; | |
216 | case SCSI_SENSE_ASCQ_LBA_OUT_OF_RANGE: | |
217 | ret = -ENOSPC; | |
218 | break; | |
219 | case SCSI_SENSE_ASCQ_LOGICAL_UNIT_NOT_SUPPORTED: | |
220 | ret = -ENOTSUP; | |
221 | break; | |
222 | case SCSI_SENSE_ASCQ_MEDIUM_NOT_PRESENT: | |
223 | case SCSI_SENSE_ASCQ_MEDIUM_NOT_PRESENT_TRAY_CLOSED: | |
224 | case SCSI_SENSE_ASCQ_MEDIUM_NOT_PRESENT_TRAY_OPEN: | |
225 | ret = -ENOMEDIUM; | |
226 | break; | |
227 | case SCSI_SENSE_ASCQ_WRITE_PROTECTED: | |
228 | ret = -EACCES; | |
229 | break; | |
230 | default: | |
231 | ret = -EIO; | |
232 | break; | |
233 | } | |
234 | return ret; | |
235 | } | |
236 | ||
54a5c1d5 PL |
237 | static void |
238 | iscsi_co_generic_cb(struct iscsi_context *iscsi, int status, | |
239 | void *command_data, void *opaque) | |
240 | { | |
241 | struct IscsiTask *iTask = opaque; | |
242 | struct scsi_task *task = command_data; | |
243 | ||
54a5c1d5 PL |
244 | iTask->status = status; |
245 | iTask->do_retry = 0; | |
246 | iTask->task = task; | |
247 | ||
54a5c1d5 | 248 | if (status != SCSI_STATUS_GOOD) { |
efc6de0d PL |
249 | if (iTask->retries++ < ISCSI_CMD_RETRIES) { |
250 | if (status == SCSI_STATUS_CHECK_CONDITION | |
251 | && task->sense.key == SCSI_SENSE_UNIT_ATTENTION) { | |
252 | error_report("iSCSI CheckCondition: %s", | |
253 | iscsi_get_error(iscsi)); | |
254 | iTask->do_retry = 1; | |
255 | goto out; | |
256 | } | |
9049736e | 257 | if (status == SCSI_STATUS_BUSY || |
e01dd3da FZ |
258 | status == SCSI_STATUS_TIMEOUT || |
259 | status == SCSI_STATUS_TASK_SET_FULL) { | |
efc6de0d PL |
260 | unsigned retry_time = |
261 | exp_random(iscsi_retry_times[iTask->retries - 1]); | |
e01dd3da | 262 | if (status == SCSI_STATUS_TIMEOUT) { |
5dd7a535 PL |
263 | /* make sure the request is rescheduled AFTER the |
264 | * reconnect is initiated */ | |
265 | retry_time = EVENT_INTERVAL * 2; | |
266 | iTask->iscsilun->request_timed_out = true; | |
267 | } | |
268 | error_report("iSCSI Busy/TaskSetFull/TimeOut" | |
269 | " (retry #%u in %u ms): %s", | |
efc6de0d PL |
270 | iTask->retries, retry_time, |
271 | iscsi_get_error(iscsi)); | |
272 | aio_timer_init(iTask->iscsilun->aio_context, | |
273 | &iTask->retry_timer, QEMU_CLOCK_REALTIME, | |
274 | SCALE_MS, iscsi_retry_timer_expired, iTask); | |
275 | timer_mod(&iTask->retry_timer, | |
276 | qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + retry_time); | |
277 | iTask->do_retry = 1; | |
278 | return; | |
279 | } | |
280 | } | |
e01dd3da | 281 | iTask->err_code = iscsi_translate_sense(&task->sense); |
837c3901 | 282 | error_report("iSCSI Failure: %s", iscsi_get_error(iscsi)); |
54a5c1d5 PL |
283 | } |
284 | ||
285 | out: | |
286 | if (iTask->co) { | |
80cf6257 SH |
287 | iTask->bh = aio_bh_new(iTask->iscsilun->aio_context, |
288 | iscsi_co_generic_bh_cb, iTask); | |
8b9dfe90 | 289 | qemu_bh_schedule(iTask->bh); |
fcd470d8 PL |
290 | } else { |
291 | iTask->complete = 1; | |
54a5c1d5 PL |
292 | } |
293 | } | |
294 | ||
295 | static void iscsi_co_init_iscsitask(IscsiLun *iscsilun, struct IscsiTask *iTask) | |
296 | { | |
297 | *iTask = (struct IscsiTask) { | |
efc6de0d | 298 | .co = qemu_coroutine_self(), |
efc6de0d | 299 | .iscsilun = iscsilun, |
54a5c1d5 PL |
300 | }; |
301 | } | |
27cbd828 | 302 | |
c589b249 RS |
303 | static void |
304 | iscsi_abort_task_cb(struct iscsi_context *iscsi, int status, void *command_data, | |
305 | void *private_data) | |
306 | { | |
1bd075f2 PB |
307 | IscsiAIOCB *acb = private_data; |
308 | ||
309 | acb->status = -ECANCELED; | |
310 | iscsi_schedule_bh(acb); | |
c589b249 RS |
311 | } |
312 | ||
313 | static void | |
7c84b1b8 | 314 | iscsi_aio_cancel(BlockAIOCB *blockacb) |
c589b249 RS |
315 | { |
316 | IscsiAIOCB *acb = (IscsiAIOCB *)blockacb; | |
317 | IscsiLun *iscsilun = acb->iscsilun; | |
318 | ||
1bd075f2 PB |
319 | if (acb->status != -EINPROGRESS) { |
320 | return; | |
321 | } | |
322 | ||
b2090919 | 323 | /* send a task mgmt call to the target to cancel the task on the target */ |
64e69e80 | 324 | iscsi_task_mgmt_abort_task_async(iscsilun->iscsi, acb->task, |
1bd075f2 | 325 | iscsi_abort_task_cb, acb); |
b2090919 | 326 | |
c589b249 RS |
327 | } |
328 | ||
d7331bed | 329 | static const AIOCBInfo iscsi_aiocb_info = { |
c589b249 | 330 | .aiocb_size = sizeof(IscsiAIOCB), |
722d9333 | 331 | .cancel_async = iscsi_aio_cancel, |
c589b249 RS |
332 | }; |
333 | ||
334 | ||
335 | static void iscsi_process_read(void *arg); | |
336 | static void iscsi_process_write(void *arg); | |
337 | ||
c589b249 RS |
338 | static void |
339 | iscsi_set_events(IscsiLun *iscsilun) | |
340 | { | |
341 | struct iscsi_context *iscsi = iscsilun->iscsi; | |
05b685fb | 342 | int ev = iscsi_which_events(iscsi); |
c9b9f682 | 343 | |
c9b9f682 | 344 | if (ev != iscsilun->events) { |
dca21ef2 FZ |
345 | aio_set_fd_handler(iscsilun->aio_context, iscsi_get_fd(iscsi), |
346 | false, | |
05b685fb | 347 | (ev & POLLIN) ? iscsi_process_read : NULL, |
80cf6257 SH |
348 | (ev & POLLOUT) ? iscsi_process_write : NULL, |
349 | iscsilun); | |
05b685fb PL |
350 | iscsilun->events = ev; |
351 | } | |
05b685fb | 352 | } |
c9b9f682 | 353 | |
5dd7a535 | 354 | static void iscsi_timed_check_events(void *opaque) |
05b685fb PL |
355 | { |
356 | IscsiLun *iscsilun = opaque; | |
5dd7a535 PL |
357 | |
358 | /* check for timed out requests */ | |
359 | iscsi_service(iscsilun->iscsi, 0); | |
360 | ||
361 | if (iscsilun->request_timed_out) { | |
362 | iscsilun->request_timed_out = false; | |
363 | iscsi_reconnect(iscsilun->iscsi); | |
364 | } | |
365 | ||
366 | /* newer versions of libiscsi may return zero events. Ensure we are able | |
367 | * to return to service once this situation changes. */ | |
05b685fb | 368 | iscsi_set_events(iscsilun); |
5dd7a535 PL |
369 | |
370 | timer_mod(iscsilun->event_timer, | |
371 | qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + EVENT_INTERVAL); | |
c589b249 RS |
372 | } |
373 | ||
374 | static void | |
375 | iscsi_process_read(void *arg) | |
376 | { | |
377 | IscsiLun *iscsilun = arg; | |
378 | struct iscsi_context *iscsi = iscsilun->iscsi; | |
379 | ||
380 | iscsi_service(iscsi, POLLIN); | |
381 | iscsi_set_events(iscsilun); | |
382 | } | |
383 | ||
384 | static void | |
385 | iscsi_process_write(void *arg) | |
386 | { | |
387 | IscsiLun *iscsilun = arg; | |
388 | struct iscsi_context *iscsi = iscsilun->iscsi; | |
389 | ||
390 | iscsi_service(iscsi, POLLOUT); | |
391 | iscsi_set_events(iscsilun); | |
392 | } | |
393 | ||
0777b5dd PL |
394 | static int64_t sector_lun2qemu(int64_t sector, IscsiLun *iscsilun) |
395 | { | |
396 | return sector * iscsilun->block_size / BDRV_SECTOR_SIZE; | |
397 | } | |
398 | ||
c589b249 RS |
399 | static int64_t sector_qemu2lun(int64_t sector, IscsiLun *iscsilun) |
400 | { | |
401 | return sector * BDRV_SECTOR_SIZE / iscsilun->block_size; | |
402 | } | |
403 | ||
94d047a3 EB |
404 | static bool is_byte_request_lun_aligned(int64_t offset, int count, |
405 | IscsiLun *iscsilun) | |
91bea4e2 | 406 | { |
94d047a3 EB |
407 | if (offset % iscsilun->block_size || count % iscsilun->block_size) { |
408 | error_report("iSCSI misaligned request: " | |
409 | "iscsilun->block_size %u, offset %" PRIi64 | |
410 | ", count %d", | |
411 | iscsilun->block_size, offset, count); | |
412 | return false; | |
413 | } | |
414 | return true; | |
415 | } | |
416 | ||
417 | static bool is_sector_request_lun_aligned(int64_t sector_num, int nb_sectors, | |
418 | IscsiLun *iscsilun) | |
419 | { | |
0ead9312 | 420 | assert(nb_sectors <= BDRV_REQUEST_MAX_SECTORS); |
94d047a3 EB |
421 | return is_byte_request_lun_aligned(sector_num << BDRV_SECTOR_BITS, |
422 | nb_sectors << BDRV_SECTOR_BITS, | |
423 | iscsilun); | |
91bea4e2 PL |
424 | } |
425 | ||
a9fe4c95 PL |
426 | static unsigned long *iscsi_allocationmap_init(IscsiLun *iscsilun) |
427 | { | |
428 | return bitmap_try_new(DIV_ROUND_UP(sector_lun2qemu(iscsilun->num_blocks, | |
429 | iscsilun), | |
430 | iscsilun->cluster_sectors)); | |
431 | } | |
432 | ||
b03c3805 PL |
433 | static void iscsi_allocationmap_set(IscsiLun *iscsilun, int64_t sector_num, |
434 | int nb_sectors) | |
435 | { | |
436 | if (iscsilun->allocationmap == NULL) { | |
437 | return; | |
438 | } | |
439 | bitmap_set(iscsilun->allocationmap, | |
440 | sector_num / iscsilun->cluster_sectors, | |
441 | DIV_ROUND_UP(nb_sectors, iscsilun->cluster_sectors)); | |
442 | } | |
443 | ||
444 | static void iscsi_allocationmap_clear(IscsiLun *iscsilun, int64_t sector_num, | |
445 | int nb_sectors) | |
446 | { | |
447 | int64_t cluster_num, nb_clusters; | |
448 | if (iscsilun->allocationmap == NULL) { | |
449 | return; | |
450 | } | |
451 | cluster_num = DIV_ROUND_UP(sector_num, iscsilun->cluster_sectors); | |
452 | nb_clusters = (sector_num + nb_sectors) / iscsilun->cluster_sectors | |
453 | - cluster_num; | |
454 | if (nb_clusters > 0) { | |
455 | bitmap_clear(iscsilun->allocationmap, cluster_num, nb_clusters); | |
456 | } | |
457 | } | |
458 | ||
9f0eb9e1 KW |
459 | static int coroutine_fn |
460 | iscsi_co_writev_flags(BlockDriverState *bs, int64_t sector_num, int nb_sectors, | |
461 | QEMUIOVector *iov, int flags) | |
c589b249 | 462 | { |
063c3378 PL |
463 | IscsiLun *iscsilun = bs->opaque; |
464 | struct IscsiTask iTask; | |
f4dfa67f | 465 | uint64_t lba; |
063c3378 | 466 | uint32_t num_sectors; |
4df863f3 | 467 | bool fua = flags & BDRV_REQ_FUA; |
c589b249 | 468 | |
4df863f3 EB |
469 | if (fua) { |
470 | assert(iscsilun->dpofua); | |
471 | } | |
94d047a3 | 472 | if (!is_sector_request_lun_aligned(sector_num, nb_sectors, iscsilun)) { |
063c3378 PL |
473 | return -EINVAL; |
474 | } | |
7371d56f | 475 | |
5def6b80 EB |
476 | if (bs->bl.max_transfer && |
477 | nb_sectors << BDRV_SECTOR_BITS > bs->bl.max_transfer) { | |
dc9e7163 | 478 | error_report("iSCSI Error: Write of %d sectors exceeds max_xfer_len " |
5def6b80 | 479 | "of %" PRIu32 " bytes", nb_sectors, bs->bl.max_transfer); |
dc9e7163 PL |
480 | return -EINVAL; |
481 | } | |
482 | ||
063c3378 PL |
483 | lba = sector_qemu2lun(sector_num, iscsilun); |
484 | num_sectors = sector_qemu2lun(nb_sectors, iscsilun); | |
063c3378 PL |
485 | iscsi_co_init_iscsitask(iscsilun, &iTask); |
486 | retry: | |
9281fe9e PL |
487 | if (iscsilun->use_16_for_rw) { |
488 | iTask.task = iscsi_write16_task(iscsilun->iscsi, iscsilun->lun, lba, | |
8c215a9f | 489 | NULL, num_sectors * iscsilun->block_size, |
73b5394e | 490 | iscsilun->block_size, 0, 0, fua, 0, 0, |
9281fe9e PL |
491 | iscsi_co_generic_cb, &iTask); |
492 | } else { | |
493 | iTask.task = iscsi_write10_task(iscsilun->iscsi, iscsilun->lun, lba, | |
8c215a9f | 494 | NULL, num_sectors * iscsilun->block_size, |
73b5394e | 495 | iscsilun->block_size, 0, 0, fua, 0, 0, |
9281fe9e PL |
496 | iscsi_co_generic_cb, &iTask); |
497 | } | |
063c3378 | 498 | if (iTask.task == NULL) { |
92397116 | 499 | return -ENOMEM; |
f4dfa67f | 500 | } |
063c3378 PL |
501 | scsi_task_set_iov_out(iTask.task, (struct scsi_iovec *) iov->iov, |
502 | iov->niov); | |
063c3378 PL |
503 | while (!iTask.complete) { |
504 | iscsi_set_events(iscsilun); | |
505 | qemu_coroutine_yield(); | |
c589b249 RS |
506 | } |
507 | ||
063c3378 PL |
508 | if (iTask.task != NULL) { |
509 | scsi_free_scsi_task(iTask.task); | |
510 | iTask.task = NULL; | |
91bea4e2 PL |
511 | } |
512 | ||
063c3378 | 513 | if (iTask.do_retry) { |
837c3901 | 514 | iTask.complete = 0; |
063c3378 | 515 | goto retry; |
1dde716e PL |
516 | } |
517 | ||
063c3378 | 518 | if (iTask.status != SCSI_STATUS_GOOD) { |
e01dd3da | 519 | return iTask.err_code; |
c589b249 RS |
520 | } |
521 | ||
b03c3805 PL |
522 | iscsi_allocationmap_set(iscsilun, sector_num, nb_sectors); |
523 | ||
063c3378 | 524 | return 0; |
c589b249 RS |
525 | } |
526 | ||
b03c3805 PL |
527 | |
528 | static bool iscsi_allocationmap_is_allocated(IscsiLun *iscsilun, | |
529 | int64_t sector_num, int nb_sectors) | |
530 | { | |
531 | unsigned long size; | |
532 | if (iscsilun->allocationmap == NULL) { | |
533 | return true; | |
534 | } | |
535 | size = DIV_ROUND_UP(sector_num + nb_sectors, iscsilun->cluster_sectors); | |
536 | return !(find_next_bit(iscsilun->allocationmap, size, | |
537 | sector_num / iscsilun->cluster_sectors) == size); | |
538 | } | |
539 | ||
b03c3805 PL |
540 | static int64_t coroutine_fn iscsi_co_get_block_status(BlockDriverState *bs, |
541 | int64_t sector_num, | |
67a0fd2a FZ |
542 | int nb_sectors, int *pnum, |
543 | BlockDriverState **file) | |
b03c3805 PL |
544 | { |
545 | IscsiLun *iscsilun = bs->opaque; | |
546 | struct scsi_get_lba_status *lbas = NULL; | |
547 | struct scsi_lba_status_descriptor *lbasd = NULL; | |
548 | struct IscsiTask iTask; | |
549 | int64_t ret; | |
550 | ||
551 | iscsi_co_init_iscsitask(iscsilun, &iTask); | |
552 | ||
94d047a3 | 553 | if (!is_sector_request_lun_aligned(sector_num, nb_sectors, iscsilun)) { |
b03c3805 PL |
554 | ret = -EINVAL; |
555 | goto out; | |
556 | } | |
557 | ||
558 | /* default to all sectors allocated */ | |
559 | ret = BDRV_BLOCK_DATA; | |
560 | ret |= (sector_num << BDRV_SECTOR_BITS) | BDRV_BLOCK_OFFSET_VALID; | |
561 | *pnum = nb_sectors; | |
562 | ||
563 | /* LUN does not support logical block provisioning */ | |
0a386e48 | 564 | if (!iscsilun->lbpme) { |
b03c3805 PL |
565 | goto out; |
566 | } | |
567 | ||
568 | retry: | |
569 | if (iscsi_get_lba_status_task(iscsilun->iscsi, iscsilun->lun, | |
570 | sector_qemu2lun(sector_num, iscsilun), | |
571 | 8 + 16, iscsi_co_generic_cb, | |
572 | &iTask) == NULL) { | |
573 | ret = -ENOMEM; | |
574 | goto out; | |
575 | } | |
576 | ||
577 | while (!iTask.complete) { | |
578 | iscsi_set_events(iscsilun); | |
579 | qemu_coroutine_yield(); | |
580 | } | |
581 | ||
582 | if (iTask.do_retry) { | |
583 | if (iTask.task != NULL) { | |
584 | scsi_free_scsi_task(iTask.task); | |
585 | iTask.task = NULL; | |
586 | } | |
587 | iTask.complete = 0; | |
588 | goto retry; | |
589 | } | |
590 | ||
591 | if (iTask.status != SCSI_STATUS_GOOD) { | |
592 | /* in case the get_lba_status_callout fails (i.e. | |
593 | * because the device is busy or the cmd is not | |
594 | * supported) we pretend all blocks are allocated | |
595 | * for backwards compatibility */ | |
596 | goto out; | |
597 | } | |
598 | ||
599 | lbas = scsi_datain_unmarshall(iTask.task); | |
600 | if (lbas == NULL) { | |
601 | ret = -EIO; | |
602 | goto out; | |
603 | } | |
604 | ||
605 | lbasd = &lbas->descriptors[0]; | |
606 | ||
607 | if (sector_qemu2lun(sector_num, iscsilun) != lbasd->lba) { | |
608 | ret = -EIO; | |
609 | goto out; | |
610 | } | |
611 | ||
612 | *pnum = sector_lun2qemu(lbasd->num_blocks, iscsilun); | |
613 | ||
614 | if (lbasd->provisioning == SCSI_PROVISIONING_TYPE_DEALLOCATED || | |
615 | lbasd->provisioning == SCSI_PROVISIONING_TYPE_ANCHORED) { | |
616 | ret &= ~BDRV_BLOCK_DATA; | |
617 | if (iscsilun->lbprz) { | |
618 | ret |= BDRV_BLOCK_ZERO; | |
619 | } | |
620 | } | |
621 | ||
622 | if (ret & BDRV_BLOCK_ZERO) { | |
623 | iscsi_allocationmap_clear(iscsilun, sector_num, *pnum); | |
624 | } else { | |
625 | iscsi_allocationmap_set(iscsilun, sector_num, *pnum); | |
626 | } | |
627 | ||
628 | if (*pnum > nb_sectors) { | |
629 | *pnum = nb_sectors; | |
630 | } | |
631 | out: | |
632 | if (iTask.task != NULL) { | |
633 | scsi_free_scsi_task(iTask.task); | |
634 | } | |
3399833f FZ |
635 | if (ret > 0 && ret & BDRV_BLOCK_OFFSET_VALID) { |
636 | *file = bs; | |
637 | } | |
b03c3805 PL |
638 | return ret; |
639 | } | |
640 | ||
063c3378 PL |
641 | static int coroutine_fn iscsi_co_readv(BlockDriverState *bs, |
642 | int64_t sector_num, int nb_sectors, | |
643 | QEMUIOVector *iov) | |
c589b249 | 644 | { |
063c3378 PL |
645 | IscsiLun *iscsilun = bs->opaque; |
646 | struct IscsiTask iTask; | |
1dde716e PL |
647 | uint64_t lba; |
648 | uint32_t num_sectors; | |
c589b249 | 649 | |
94d047a3 | 650 | if (!is_sector_request_lun_aligned(sector_num, nb_sectors, iscsilun)) { |
063c3378 | 651 | return -EINVAL; |
f4dfa67f | 652 | } |
f4dfa67f | 653 | |
5def6b80 EB |
654 | if (bs->bl.max_transfer && |
655 | nb_sectors << BDRV_SECTOR_BITS > bs->bl.max_transfer) { | |
dc9e7163 | 656 | error_report("iSCSI Error: Read of %d sectors exceeds max_xfer_len " |
5def6b80 | 657 | "of %" PRIu32 " bytes", nb_sectors, bs->bl.max_transfer); |
dc9e7163 PL |
658 | return -EINVAL; |
659 | } | |
660 | ||
5917af81 | 661 | if (iscsilun->lbprz && nb_sectors >= ISCSI_CHECKALLOC_THRES && |
b03c3805 PL |
662 | !iscsi_allocationmap_is_allocated(iscsilun, sector_num, nb_sectors)) { |
663 | int64_t ret; | |
664 | int pnum; | |
67a0fd2a | 665 | BlockDriverState *file; |
0ead9312 PL |
666 | ret = iscsi_co_get_block_status(bs, sector_num, |
667 | BDRV_REQUEST_MAX_SECTORS, &pnum, &file); | |
b03c3805 PL |
668 | if (ret < 0) { |
669 | return ret; | |
670 | } | |
671 | if (ret & BDRV_BLOCK_ZERO && pnum >= nb_sectors) { | |
672 | qemu_iovec_memset(iov, 0, 0x00, iov->size); | |
673 | return 0; | |
674 | } | |
675 | } | |
b03c3805 | 676 | |
063c3378 PL |
677 | lba = sector_qemu2lun(sector_num, iscsilun); |
678 | num_sectors = sector_qemu2lun(nb_sectors, iscsilun); | |
f4dfa67f | 679 | |
063c3378 PL |
680 | iscsi_co_init_iscsitask(iscsilun, &iTask); |
681 | retry: | |
9281fe9e | 682 | if (iscsilun->use_16_for_rw) { |
063c3378 PL |
683 | iTask.task = iscsi_read16_task(iscsilun->iscsi, iscsilun->lun, lba, |
684 | num_sectors * iscsilun->block_size, | |
685 | iscsilun->block_size, 0, 0, 0, 0, 0, | |
686 | iscsi_co_generic_cb, &iTask); | |
9281fe9e | 687 | } else { |
063c3378 PL |
688 | iTask.task = iscsi_read10_task(iscsilun->iscsi, iscsilun->lun, lba, |
689 | num_sectors * iscsilun->block_size, | |
219c2521 | 690 | iscsilun->block_size, |
219c2521 | 691 | 0, 0, 0, 0, 0, |
063c3378 | 692 | iscsi_co_generic_cb, &iTask); |
f4dfa67f | 693 | } |
063c3378 | 694 | if (iTask.task == NULL) { |
92397116 | 695 | return -ENOMEM; |
c589b249 | 696 | } |
063c3378 | 697 | scsi_task_set_iov_in(iTask.task, (struct scsi_iovec *) iov->iov, iov->niov); |
91bea4e2 | 698 | |
063c3378 PL |
699 | while (!iTask.complete) { |
700 | iscsi_set_events(iscsilun); | |
701 | qemu_coroutine_yield(); | |
1dde716e | 702 | } |
c589b249 | 703 | |
063c3378 PL |
704 | if (iTask.task != NULL) { |
705 | scsi_free_scsi_task(iTask.task); | |
706 | iTask.task = NULL; | |
c589b249 RS |
707 | } |
708 | ||
063c3378 | 709 | if (iTask.do_retry) { |
837c3901 | 710 | iTask.complete = 0; |
063c3378 | 711 | goto retry; |
c589b249 RS |
712 | } |
713 | ||
063c3378 | 714 | if (iTask.status != SCSI_STATUS_GOOD) { |
e01dd3da | 715 | return iTask.err_code; |
1dde716e PL |
716 | } |
717 | ||
718 | return 0; | |
719 | } | |
720 | ||
063c3378 | 721 | static int coroutine_fn iscsi_co_flush(BlockDriverState *bs) |
1dde716e PL |
722 | { |
723 | IscsiLun *iscsilun = bs->opaque; | |
063c3378 | 724 | struct IscsiTask iTask; |
1dde716e | 725 | |
73b5394e | 726 | iscsi_co_init_iscsitask(iscsilun, &iTask); |
063c3378 PL |
727 | retry: |
728 | if (iscsi_synchronizecache10_task(iscsilun->iscsi, iscsilun->lun, 0, 0, 0, | |
729 | 0, iscsi_co_generic_cb, &iTask) == NULL) { | |
92397116 | 730 | return -ENOMEM; |
063c3378 | 731 | } |
1dde716e | 732 | |
063c3378 PL |
733 | while (!iTask.complete) { |
734 | iscsi_set_events(iscsilun); | |
735 | qemu_coroutine_yield(); | |
736 | } | |
1dde716e | 737 | |
063c3378 PL |
738 | if (iTask.task != NULL) { |
739 | scsi_free_scsi_task(iTask.task); | |
740 | iTask.task = NULL; | |
c589b249 RS |
741 | } |
742 | ||
063c3378 | 743 | if (iTask.do_retry) { |
837c3901 | 744 | iTask.complete = 0; |
063c3378 PL |
745 | goto retry; |
746 | } | |
c589b249 | 747 | |
063c3378 | 748 | if (iTask.status != SCSI_STATUS_GOOD) { |
e01dd3da | 749 | return iTask.err_code; |
063c3378 PL |
750 | } |
751 | ||
752 | return 0; | |
c589b249 RS |
753 | } |
754 | ||
98392453 RS |
755 | #ifdef __linux__ |
756 | static void | |
757 | iscsi_aio_ioctl_cb(struct iscsi_context *iscsi, int status, | |
758 | void *command_data, void *opaque) | |
759 | { | |
760 | IscsiAIOCB *acb = opaque; | |
761 | ||
0a53f010 RS |
762 | g_free(acb->buf); |
763 | acb->buf = NULL; | |
764 | ||
98392453 RS |
765 | acb->status = 0; |
766 | if (status < 0) { | |
767 | error_report("Failed to ioctl(SG_IO) to iSCSI lun. %s", | |
768 | iscsi_get_error(iscsi)); | |
e01dd3da | 769 | acb->status = iscsi_translate_sense(&acb->task->sense); |
98392453 RS |
770 | } |
771 | ||
772 | acb->ioh->driver_status = 0; | |
773 | acb->ioh->host_status = 0; | |
774 | acb->ioh->resid = 0; | |
644c6869 | 775 | acb->ioh->status = status; |
98392453 RS |
776 | |
777 | #define SG_ERR_DRIVER_SENSE 0x08 | |
778 | ||
779 | if (status == SCSI_STATUS_CHECK_CONDITION && acb->task->datain.size >= 2) { | |
780 | int ss; | |
781 | ||
782 | acb->ioh->driver_status |= SG_ERR_DRIVER_SENSE; | |
783 | ||
784 | acb->ioh->sb_len_wr = acb->task->datain.size - 2; | |
785 | ss = (acb->ioh->mx_sb_len >= acb->ioh->sb_len_wr) ? | |
786 | acb->ioh->mx_sb_len : acb->ioh->sb_len_wr; | |
787 | memcpy(acb->ioh->sbp, &acb->task->datain.data[2], ss); | |
788 | } | |
789 | ||
cfb3f506 | 790 | iscsi_schedule_bh(acb); |
98392453 RS |
791 | } |
792 | ||
4bb17ab5 FZ |
793 | static void iscsi_ioctl_bh_completion(void *opaque) |
794 | { | |
795 | IscsiAIOCB *acb = opaque; | |
796 | ||
797 | qemu_bh_delete(acb->bh); | |
798 | acb->common.cb(acb->common.opaque, acb->ret); | |
799 | qemu_aio_unref(acb); | |
800 | } | |
801 | ||
802 | static void iscsi_ioctl_handle_emulated(IscsiAIOCB *acb, int req, void *buf) | |
803 | { | |
804 | BlockDriverState *bs = acb->common.bs; | |
805 | IscsiLun *iscsilun = bs->opaque; | |
806 | int ret = 0; | |
807 | ||
808 | switch (req) { | |
809 | case SG_GET_VERSION_NUM: | |
810 | *(int *)buf = 30000; | |
811 | break; | |
812 | case SG_GET_SCSI_ID: | |
813 | ((struct sg_scsi_id *)buf)->scsi_type = iscsilun->type; | |
814 | break; | |
815 | default: | |
816 | ret = -EINVAL; | |
817 | } | |
818 | assert(!acb->bh); | |
819 | acb->bh = aio_bh_new(bdrv_get_aio_context(bs), | |
820 | iscsi_ioctl_bh_completion, acb); | |
821 | acb->ret = ret; | |
822 | qemu_bh_schedule(acb->bh); | |
823 | } | |
824 | ||
7c84b1b8 | 825 | static BlockAIOCB *iscsi_aio_ioctl(BlockDriverState *bs, |
98392453 | 826 | unsigned long int req, void *buf, |
097310b5 | 827 | BlockCompletionFunc *cb, void *opaque) |
98392453 RS |
828 | { |
829 | IscsiLun *iscsilun = bs->opaque; | |
830 | struct iscsi_context *iscsi = iscsilun->iscsi; | |
831 | struct iscsi_data data; | |
832 | IscsiAIOCB *acb; | |
833 | ||
d7331bed | 834 | acb = qemu_aio_get(&iscsi_aiocb_info, bs, cb, opaque); |
98392453 RS |
835 | |
836 | acb->iscsilun = iscsilun; | |
1bd075f2 PB |
837 | acb->bh = NULL; |
838 | acb->status = -EINPROGRESS; | |
98392453 RS |
839 | acb->buf = NULL; |
840 | acb->ioh = buf; | |
841 | ||
4bb17ab5 FZ |
842 | if (req != SG_IO) { |
843 | iscsi_ioctl_handle_emulated(acb, req, buf); | |
844 | return &acb->common; | |
845 | } | |
846 | ||
a6b3167f PL |
847 | if (acb->ioh->cmd_len > SCSI_CDB_MAX_SIZE) { |
848 | error_report("iSCSI: ioctl error CDB exceeds max size (%d > %d)", | |
849 | acb->ioh->cmd_len, SCSI_CDB_MAX_SIZE); | |
850 | qemu_aio_unref(acb); | |
851 | return NULL; | |
852 | } | |
853 | ||
98392453 RS |
854 | acb->task = malloc(sizeof(struct scsi_task)); |
855 | if (acb->task == NULL) { | |
856 | error_report("iSCSI: Failed to allocate task for scsi command. %s", | |
857 | iscsi_get_error(iscsi)); | |
8007429a | 858 | qemu_aio_unref(acb); |
98392453 RS |
859 | return NULL; |
860 | } | |
861 | memset(acb->task, 0, sizeof(struct scsi_task)); | |
862 | ||
863 | switch (acb->ioh->dxfer_direction) { | |
864 | case SG_DXFER_TO_DEV: | |
865 | acb->task->xfer_dir = SCSI_XFER_WRITE; | |
866 | break; | |
867 | case SG_DXFER_FROM_DEV: | |
868 | acb->task->xfer_dir = SCSI_XFER_READ; | |
869 | break; | |
870 | default: | |
871 | acb->task->xfer_dir = SCSI_XFER_NONE; | |
872 | break; | |
873 | } | |
874 | ||
875 | acb->task->cdb_size = acb->ioh->cmd_len; | |
876 | memcpy(&acb->task->cdb[0], acb->ioh->cmdp, acb->ioh->cmd_len); | |
877 | acb->task->expxferlen = acb->ioh->dxfer_len; | |
878 | ||
0a53f010 | 879 | data.size = 0; |
98392453 | 880 | if (acb->task->xfer_dir == SCSI_XFER_WRITE) { |
0a53f010 RS |
881 | if (acb->ioh->iovec_count == 0) { |
882 | data.data = acb->ioh->dxferp; | |
883 | data.size = acb->ioh->dxfer_len; | |
884 | } else { | |
0a53f010 RS |
885 | scsi_task_set_iov_out(acb->task, |
886 | (struct scsi_iovec *) acb->ioh->dxferp, | |
887 | acb->ioh->iovec_count); | |
0a53f010 | 888 | } |
98392453 | 889 | } |
0a53f010 | 890 | |
98392453 RS |
891 | if (iscsi_scsi_command_async(iscsi, iscsilun->lun, acb->task, |
892 | iscsi_aio_ioctl_cb, | |
0a53f010 | 893 | (data.size > 0) ? &data : NULL, |
98392453 RS |
894 | acb) != 0) { |
895 | scsi_free_scsi_task(acb->task); | |
8007429a | 896 | qemu_aio_unref(acb); |
98392453 RS |
897 | return NULL; |
898 | } | |
899 | ||
900 | /* tell libiscsi to read straight into the buffer we got from ioctl */ | |
901 | if (acb->task->xfer_dir == SCSI_XFER_READ) { | |
0a53f010 RS |
902 | if (acb->ioh->iovec_count == 0) { |
903 | scsi_task_add_data_in_buffer(acb->task, | |
904 | acb->ioh->dxfer_len, | |
905 | acb->ioh->dxferp); | |
906 | } else { | |
0a53f010 RS |
907 | scsi_task_set_iov_in(acb->task, |
908 | (struct scsi_iovec *) acb->ioh->dxferp, | |
909 | acb->ioh->iovec_count); | |
0a53f010 | 910 | } |
98392453 RS |
911 | } |
912 | ||
913 | iscsi_set_events(iscsilun); | |
914 | ||
915 | return &acb->common; | |
916 | } | |
917 | ||
98392453 RS |
918 | #endif |
919 | ||
c589b249 RS |
920 | static int64_t |
921 | iscsi_getlength(BlockDriverState *bs) | |
922 | { | |
923 | IscsiLun *iscsilun = bs->opaque; | |
924 | int64_t len; | |
925 | ||
926 | len = iscsilun->num_blocks; | |
927 | len *= iscsilun->block_size; | |
928 | ||
929 | return len; | |
930 | } | |
931 | ||
65f3e339 PL |
932 | static int |
933 | coroutine_fn iscsi_co_discard(BlockDriverState *bs, int64_t sector_num, | |
934 | int nb_sectors) | |
935 | { | |
936 | IscsiLun *iscsilun = bs->opaque; | |
937 | struct IscsiTask iTask; | |
938 | struct unmap_list list; | |
65f3e339 | 939 | |
94d047a3 | 940 | if (!is_sector_request_lun_aligned(sector_num, nb_sectors, iscsilun)) { |
65f3e339 PL |
941 | return -EINVAL; |
942 | } | |
943 | ||
944 | if (!iscsilun->lbp.lbpu) { | |
945 | /* UNMAP is not supported by the target */ | |
946 | return 0; | |
947 | } | |
948 | ||
949 | list.lba = sector_qemu2lun(sector_num, iscsilun); | |
01a6a238 | 950 | list.num = sector_qemu2lun(nb_sectors, iscsilun); |
65f3e339 | 951 | |
01a6a238 | 952 | iscsi_co_init_iscsitask(iscsilun, &iTask); |
65f3e339 | 953 | retry: |
01a6a238 PL |
954 | if (iscsi_unmap_task(iscsilun->iscsi, iscsilun->lun, 0, 0, &list, 1, |
955 | iscsi_co_generic_cb, &iTask) == NULL) { | |
92397116 | 956 | return -ENOMEM; |
01a6a238 | 957 | } |
65f3e339 | 958 | |
01a6a238 PL |
959 | while (!iTask.complete) { |
960 | iscsi_set_events(iscsilun); | |
961 | qemu_coroutine_yield(); | |
962 | } | |
65f3e339 | 963 | |
01a6a238 PL |
964 | if (iTask.task != NULL) { |
965 | scsi_free_scsi_task(iTask.task); | |
966 | iTask.task = NULL; | |
967 | } | |
65f3e339 | 968 | |
01a6a238 | 969 | if (iTask.do_retry) { |
837c3901 | 970 | iTask.complete = 0; |
01a6a238 PL |
971 | goto retry; |
972 | } | |
65f3e339 | 973 | |
01a6a238 PL |
974 | if (iTask.status == SCSI_STATUS_CHECK_CONDITION) { |
975 | /* the target might fail with a check condition if it | |
976 | is not happy with the alignment of the UNMAP request | |
977 | we silently fail in this case */ | |
978 | return 0; | |
979 | } | |
65f3e339 | 980 | |
01a6a238 | 981 | if (iTask.status != SCSI_STATUS_GOOD) { |
e01dd3da | 982 | return iTask.err_code; |
65f3e339 PL |
983 | } |
984 | ||
b03c3805 PL |
985 | iscsi_allocationmap_clear(iscsilun, sector_num, nb_sectors); |
986 | ||
65f3e339 PL |
987 | return 0; |
988 | } | |
989 | ||
d4cd9615 | 990 | static int |
94d047a3 EB |
991 | coroutine_fn iscsi_co_pwrite_zeroes(BlockDriverState *bs, int64_t offset, |
992 | int count, BdrvRequestFlags flags) | |
d4cd9615 PL |
993 | { |
994 | IscsiLun *iscsilun = bs->opaque; | |
995 | struct IscsiTask iTask; | |
996 | uint64_t lba; | |
997 | uint32_t nb_blocks; | |
9281fe9e | 998 | bool use_16_for_ws = iscsilun->use_16_for_rw; |
d4cd9615 | 999 | |
94d047a3 EB |
1000 | if (!is_byte_request_lun_aligned(offset, count, iscsilun)) { |
1001 | return -ENOTSUP; | |
d4cd9615 PL |
1002 | } |
1003 | ||
9281fe9e PL |
1004 | if (flags & BDRV_REQ_MAY_UNMAP) { |
1005 | if (!use_16_for_ws && !iscsilun->lbp.lbpws10) { | |
1006 | /* WRITESAME10 with UNMAP is unsupported try WRITESAME16 */ | |
1007 | use_16_for_ws = true; | |
1008 | } | |
1009 | if (use_16_for_ws && !iscsilun->lbp.lbpws) { | |
1010 | /* WRITESAME16 with UNMAP is not supported by the target, | |
1011 | * fall back and try WRITESAME10/16 without UNMAP */ | |
1012 | flags &= ~BDRV_REQ_MAY_UNMAP; | |
1013 | use_16_for_ws = iscsilun->use_16_for_rw; | |
1014 | } | |
fa6252b0 PB |
1015 | } |
1016 | ||
dbe5c58f | 1017 | if (!(flags & BDRV_REQ_MAY_UNMAP) && !iscsilun->has_write_same) { |
9281fe9e | 1018 | /* WRITESAME without UNMAP is not supported by the target */ |
d4cd9615 PL |
1019 | return -ENOTSUP; |
1020 | } | |
1021 | ||
94d047a3 EB |
1022 | lba = offset / iscsilun->block_size; |
1023 | nb_blocks = count / iscsilun->block_size; | |
d4cd9615 PL |
1024 | |
1025 | if (iscsilun->zeroblock == NULL) { | |
4d5a3f88 KW |
1026 | iscsilun->zeroblock = g_try_malloc0(iscsilun->block_size); |
1027 | if (iscsilun->zeroblock == NULL) { | |
1028 | return -ENOMEM; | |
1029 | } | |
d4cd9615 PL |
1030 | } |
1031 | ||
1032 | iscsi_co_init_iscsitask(iscsilun, &iTask); | |
1033 | retry: | |
9281fe9e PL |
1034 | if (use_16_for_ws) { |
1035 | iTask.task = iscsi_writesame16_task(iscsilun->iscsi, iscsilun->lun, lba, | |
1036 | iscsilun->zeroblock, iscsilun->block_size, | |
1037 | nb_blocks, 0, !!(flags & BDRV_REQ_MAY_UNMAP), | |
1038 | 0, 0, iscsi_co_generic_cb, &iTask); | |
1039 | } else { | |
1040 | iTask.task = iscsi_writesame10_task(iscsilun->iscsi, iscsilun->lun, lba, | |
1041 | iscsilun->zeroblock, iscsilun->block_size, | |
1042 | nb_blocks, 0, !!(flags & BDRV_REQ_MAY_UNMAP), | |
1043 | 0, 0, iscsi_co_generic_cb, &iTask); | |
1044 | } | |
1045 | if (iTask.task == NULL) { | |
92397116 | 1046 | return -ENOMEM; |
d4cd9615 PL |
1047 | } |
1048 | ||
1049 | while (!iTask.complete) { | |
1050 | iscsi_set_events(iscsilun); | |
1051 | qemu_coroutine_yield(); | |
1052 | } | |
1053 | ||
d9738fd2 PL |
1054 | if (iTask.status == SCSI_STATUS_CHECK_CONDITION && |
1055 | iTask.task->sense.key == SCSI_SENSE_ILLEGAL_REQUEST && | |
27898a5d PB |
1056 | (iTask.task->sense.ascq == SCSI_SENSE_ASCQ_INVALID_OPERATION_CODE || |
1057 | iTask.task->sense.ascq == SCSI_SENSE_ASCQ_INVALID_FIELD_IN_CDB)) { | |
d9738fd2 PL |
1058 | /* WRITE SAME is not supported by the target */ |
1059 | iscsilun->has_write_same = false; | |
1060 | scsi_free_scsi_task(iTask.task); | |
1061 | return -ENOTSUP; | |
1062 | } | |
1063 | ||
d4cd9615 PL |
1064 | if (iTask.task != NULL) { |
1065 | scsi_free_scsi_task(iTask.task); | |
1066 | iTask.task = NULL; | |
1067 | } | |
1068 | ||
1069 | if (iTask.do_retry) { | |
837c3901 | 1070 | iTask.complete = 0; |
d4cd9615 PL |
1071 | goto retry; |
1072 | } | |
1073 | ||
1074 | if (iTask.status != SCSI_STATUS_GOOD) { | |
e01dd3da | 1075 | return iTask.err_code; |
d4cd9615 PL |
1076 | } |
1077 | ||
b03c3805 | 1078 | if (flags & BDRV_REQ_MAY_UNMAP) { |
94d047a3 EB |
1079 | iscsi_allocationmap_clear(iscsilun, offset >> BDRV_SECTOR_BITS, |
1080 | count >> BDRV_SECTOR_BITS); | |
b03c3805 | 1081 | } else { |
94d047a3 EB |
1082 | iscsi_allocationmap_set(iscsilun, offset >> BDRV_SECTOR_BITS, |
1083 | count >> BDRV_SECTOR_BITS); | |
b03c3805 PL |
1084 | } |
1085 | ||
d4cd9615 PL |
1086 | return 0; |
1087 | } | |
1088 | ||
f2917853 PB |
1089 | static void parse_chap(struct iscsi_context *iscsi, const char *target, |
1090 | Error **errp) | |
f9dadc98 RS |
1091 | { |
1092 | QemuOptsList *list; | |
1093 | QemuOpts *opts; | |
1094 | const char *user = NULL; | |
1095 | const char *password = NULL; | |
b189346e DB |
1096 | const char *secretid; |
1097 | char *secret = NULL; | |
f9dadc98 RS |
1098 | |
1099 | list = qemu_find_opts("iscsi"); | |
1100 | if (!list) { | |
f2917853 | 1101 | return; |
f9dadc98 RS |
1102 | } |
1103 | ||
1104 | opts = qemu_opts_find(list, target); | |
1105 | if (opts == NULL) { | |
1106 | opts = QTAILQ_FIRST(&list->head); | |
1107 | if (!opts) { | |
f2917853 | 1108 | return; |
f9dadc98 RS |
1109 | } |
1110 | } | |
1111 | ||
1112 | user = qemu_opt_get(opts, "user"); | |
1113 | if (!user) { | |
f2917853 | 1114 | return; |
f9dadc98 RS |
1115 | } |
1116 | ||
b189346e | 1117 | secretid = qemu_opt_get(opts, "password-secret"); |
f9dadc98 | 1118 | password = qemu_opt_get(opts, "password"); |
b189346e DB |
1119 | if (secretid && password) { |
1120 | error_setg(errp, "'password' and 'password-secret' properties are " | |
1121 | "mutually exclusive"); | |
1122 | return; | |
1123 | } | |
1124 | if (secretid) { | |
1125 | secret = qcrypto_secret_lookup_as_utf8(secretid, errp); | |
1126 | if (!secret) { | |
1127 | return; | |
1128 | } | |
1129 | password = secret; | |
1130 | } else if (!password) { | |
f2917853 PB |
1131 | error_setg(errp, "CHAP username specified but no password was given"); |
1132 | return; | |
f9dadc98 RS |
1133 | } |
1134 | ||
1135 | if (iscsi_set_initiator_username_pwd(iscsi, user, password)) { | |
f2917853 | 1136 | error_setg(errp, "Failed to set initiator username and password"); |
f9dadc98 | 1137 | } |
b189346e DB |
1138 | |
1139 | g_free(secret); | |
f9dadc98 RS |
1140 | } |
1141 | ||
f2917853 PB |
1142 | static void parse_header_digest(struct iscsi_context *iscsi, const char *target, |
1143 | Error **errp) | |
f9dadc98 RS |
1144 | { |
1145 | QemuOptsList *list; | |
1146 | QemuOpts *opts; | |
1147 | const char *digest = NULL; | |
1148 | ||
1149 | list = qemu_find_opts("iscsi"); | |
1150 | if (!list) { | |
1151 | return; | |
1152 | } | |
1153 | ||
1154 | opts = qemu_opts_find(list, target); | |
1155 | if (opts == NULL) { | |
1156 | opts = QTAILQ_FIRST(&list->head); | |
1157 | if (!opts) { | |
1158 | return; | |
1159 | } | |
1160 | } | |
1161 | ||
1162 | digest = qemu_opt_get(opts, "header-digest"); | |
1163 | if (!digest) { | |
1164 | return; | |
1165 | } | |
1166 | ||
1167 | if (!strcmp(digest, "CRC32C")) { | |
1168 | iscsi_set_header_digest(iscsi, ISCSI_HEADER_DIGEST_CRC32C); | |
1169 | } else if (!strcmp(digest, "NONE")) { | |
1170 | iscsi_set_header_digest(iscsi, ISCSI_HEADER_DIGEST_NONE); | |
1171 | } else if (!strcmp(digest, "CRC32C-NONE")) { | |
1172 | iscsi_set_header_digest(iscsi, ISCSI_HEADER_DIGEST_CRC32C_NONE); | |
1173 | } else if (!strcmp(digest, "NONE-CRC32C")) { | |
1174 | iscsi_set_header_digest(iscsi, ISCSI_HEADER_DIGEST_NONE_CRC32C); | |
1175 | } else { | |
f2917853 | 1176 | error_setg(errp, "Invalid header-digest setting : %s", digest); |
f9dadc98 RS |
1177 | } |
1178 | } | |
1179 | ||
1180 | static char *parse_initiator_name(const char *target) | |
1181 | { | |
1182 | QemuOptsList *list; | |
1183 | QemuOpts *opts; | |
5accc840 PB |
1184 | const char *name; |
1185 | char *iscsi_name; | |
1186 | UuidInfo *uuid_info; | |
f9dadc98 RS |
1187 | |
1188 | list = qemu_find_opts("iscsi"); | |
f2ef4a6d PB |
1189 | if (list) { |
1190 | opts = qemu_opts_find(list, target); | |
f9dadc98 | 1191 | if (!opts) { |
f2ef4a6d PB |
1192 | opts = QTAILQ_FIRST(&list->head); |
1193 | } | |
1194 | if (opts) { | |
1195 | name = qemu_opt_get(opts, "initiator-name"); | |
5accc840 PB |
1196 | if (name) { |
1197 | return g_strdup(name); | |
1198 | } | |
f9dadc98 RS |
1199 | } |
1200 | } | |
1201 | ||
5accc840 PB |
1202 | uuid_info = qmp_query_uuid(NULL); |
1203 | if (strcmp(uuid_info->UUID, UUID_NONE) == 0) { | |
1204 | name = qemu_get_vm_name(); | |
f2ef4a6d | 1205 | } else { |
5accc840 | 1206 | name = uuid_info->UUID; |
f9dadc98 | 1207 | } |
5accc840 PB |
1208 | iscsi_name = g_strdup_printf("iqn.2008-11.org.linux-kvm%s%s", |
1209 | name ? ":" : "", name ? name : ""); | |
1210 | qapi_free_UuidInfo(uuid_info); | |
1211 | return iscsi_name; | |
f9dadc98 RS |
1212 | } |
1213 | ||
5dd7a535 PL |
1214 | static int parse_timeout(const char *target) |
1215 | { | |
1216 | QemuOptsList *list; | |
1217 | QemuOpts *opts; | |
1218 | const char *timeout; | |
1219 | ||
1220 | list = qemu_find_opts("iscsi"); | |
1221 | if (list) { | |
1222 | opts = qemu_opts_find(list, target); | |
1223 | if (!opts) { | |
1224 | opts = QTAILQ_FIRST(&list->head); | |
1225 | } | |
1226 | if (opts) { | |
1227 | timeout = qemu_opt_get(opts, "timeout"); | |
1228 | if (timeout) { | |
1229 | return atoi(timeout); | |
1230 | } | |
1231 | } | |
1232 | } | |
1233 | ||
1234 | return 0; | |
1235 | } | |
1236 | ||
5b5d34ec PL |
1237 | static void iscsi_nop_timed_event(void *opaque) |
1238 | { | |
1239 | IscsiLun *iscsilun = opaque; | |
1240 | ||
5dd7a535 | 1241 | if (iscsi_get_nops_in_flight(iscsilun->iscsi) >= MAX_NOP_FAILURES) { |
5b5d34ec | 1242 | error_report("iSCSI: NOP timeout. Reconnecting..."); |
5dd7a535 PL |
1243 | iscsilun->request_timed_out = true; |
1244 | } else if (iscsi_nop_out_async(iscsilun->iscsi, NULL, NULL, 0, NULL) != 0) { | |
5b5d34ec PL |
1245 | error_report("iSCSI: failed to sent NOP-Out. Disabling NOP messages."); |
1246 | return; | |
1247 | } | |
1248 | ||
bc72ad67 | 1249 | timer_mod(iscsilun->nop_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + NOP_INTERVAL); |
5b5d34ec PL |
1250 | iscsi_set_events(iscsilun); |
1251 | } | |
5b5d34ec | 1252 | |
f2917853 | 1253 | static void iscsi_readcapacity_sync(IscsiLun *iscsilun, Error **errp) |
cb1b83e7 PL |
1254 | { |
1255 | struct scsi_task *task = NULL; | |
1256 | struct scsi_readcapacity10 *rc10 = NULL; | |
1257 | struct scsi_readcapacity16 *rc16 = NULL; | |
cb1b83e7 PL |
1258 | int retries = ISCSI_CMD_RETRIES; |
1259 | ||
1288844e PB |
1260 | do { |
1261 | if (task != NULL) { | |
1262 | scsi_free_scsi_task(task); | |
1263 | task = NULL; | |
cb1b83e7 | 1264 | } |
1288844e PB |
1265 | |
1266 | switch (iscsilun->type) { | |
1267 | case TYPE_DISK: | |
1268 | task = iscsi_readcapacity16_sync(iscsilun->iscsi, iscsilun->lun); | |
1269 | if (task != NULL && task->status == SCSI_STATUS_GOOD) { | |
1270 | rc16 = scsi_datain_unmarshall(task); | |
1271 | if (rc16 == NULL) { | |
f2917853 | 1272 | error_setg(errp, "iSCSI: Failed to unmarshall readcapacity16 data."); |
1288844e PB |
1273 | } else { |
1274 | iscsilun->block_size = rc16->block_length; | |
1275 | iscsilun->num_blocks = rc16->returned_lba + 1; | |
0a386e48 PL |
1276 | iscsilun->lbpme = !!rc16->lbpme; |
1277 | iscsilun->lbprz = !!rc16->lbprz; | |
9281fe9e | 1278 | iscsilun->use_16_for_rw = (rc16->returned_lba > 0xffffffff); |
1288844e | 1279 | } |
1cb6d137 | 1280 | break; |
1288844e | 1281 | } |
1cb6d137 ZL |
1282 | if (task != NULL && task->status == SCSI_STATUS_CHECK_CONDITION |
1283 | && task->sense.key == SCSI_SENSE_UNIT_ATTENTION) { | |
1284 | break; | |
1285 | } | |
1286 | /* Fall through and try READ CAPACITY(10) instead. */ | |
1288844e PB |
1287 | case TYPE_ROM: |
1288 | task = iscsi_readcapacity10_sync(iscsilun->iscsi, iscsilun->lun, 0, 0); | |
1289 | if (task != NULL && task->status == SCSI_STATUS_GOOD) { | |
1290 | rc10 = scsi_datain_unmarshall(task); | |
1291 | if (rc10 == NULL) { | |
f2917853 | 1292 | error_setg(errp, "iSCSI: Failed to unmarshall readcapacity10 data."); |
1288844e PB |
1293 | } else { |
1294 | iscsilun->block_size = rc10->block_size; | |
1295 | if (rc10->lba == 0) { | |
1296 | /* blank disk loaded */ | |
1297 | iscsilun->num_blocks = 0; | |
1298 | } else { | |
1299 | iscsilun->num_blocks = rc10->lba + 1; | |
1300 | } | |
1301 | } | |
1302 | } | |
1303 | break; | |
1304 | default: | |
f2917853 | 1305 | return; |
cb1b83e7 | 1306 | } |
1288844e PB |
1307 | } while (task != NULL && task->status == SCSI_STATUS_CHECK_CONDITION |
1308 | && task->sense.key == SCSI_SENSE_UNIT_ATTENTION | |
1309 | && retries-- > 0); | |
cb1b83e7 | 1310 | |
1288844e | 1311 | if (task == NULL || task->status != SCSI_STATUS_GOOD) { |
240125bc | 1312 | error_setg(errp, "iSCSI: failed to send readcapacity10/16 command"); |
6d1f252d PL |
1313 | } else if (!iscsilun->block_size || |
1314 | iscsilun->block_size % BDRV_SECTOR_SIZE) { | |
1315 | error_setg(errp, "iSCSI: the target returned an invalid " | |
1316 | "block size of %d.", iscsilun->block_size); | |
1288844e | 1317 | } |
cb1b83e7 PL |
1318 | if (task) { |
1319 | scsi_free_scsi_task(task); | |
1320 | } | |
cb1b83e7 PL |
1321 | } |
1322 | ||
60beb341 KW |
1323 | /* TODO Convert to fine grained options */ |
1324 | static QemuOptsList runtime_opts = { | |
1325 | .name = "iscsi", | |
1326 | .head = QTAILQ_HEAD_INITIALIZER(runtime_opts.head), | |
1327 | .desc = { | |
1328 | { | |
1329 | .name = "filename", | |
1330 | .type = QEMU_OPT_STRING, | |
1331 | .help = "URL to the iscsi image", | |
1332 | }, | |
1333 | { /* end of list */ } | |
1334 | }, | |
1335 | }; | |
1336 | ||
35cb1748 | 1337 | static struct scsi_task *iscsi_do_inquiry(struct iscsi_context *iscsi, int lun, |
24d3bd67 | 1338 | int evpd, int pc, void **inq, Error **errp) |
35cb1748 PB |
1339 | { |
1340 | int full_size; | |
1341 | struct scsi_task *task = NULL; | |
1342 | task = iscsi_inquiry_sync(iscsi, lun, evpd, pc, 64); | |
1343 | if (task == NULL || task->status != SCSI_STATUS_GOOD) { | |
1344 | goto fail; | |
1345 | } | |
1346 | full_size = scsi_datain_getfullsize(task); | |
1347 | if (full_size > task->datain.size) { | |
1348 | scsi_free_scsi_task(task); | |
1349 | ||
1350 | /* we need more data for the full list */ | |
1351 | task = iscsi_inquiry_sync(iscsi, lun, evpd, pc, full_size); | |
f18a7cbb PL |
1352 | if (task == NULL || task->status != SCSI_STATUS_GOOD) { |
1353 | goto fail; | |
1354 | } | |
35cb1748 | 1355 | } |
f18a7cbb | 1356 | |
24d3bd67 PL |
1357 | *inq = scsi_datain_unmarshall(task); |
1358 | if (*inq == NULL) { | |
1359 | error_setg(errp, "iSCSI: failed to unmarshall inquiry datain blob"); | |
172fc4dd | 1360 | goto fail_with_err; |
24d3bd67 PL |
1361 | } |
1362 | ||
35cb1748 | 1363 | return task; |
f18a7cbb PL |
1364 | |
1365 | fail: | |
172fc4dd MA |
1366 | error_setg(errp, "iSCSI: Inquiry command failed : %s", |
1367 | iscsi_get_error(iscsi)); | |
1368 | fail_with_err: | |
24d3bd67 | 1369 | if (task != NULL) { |
35cb1748 | 1370 | scsi_free_scsi_task(task); |
35cb1748 PB |
1371 | } |
1372 | return NULL; | |
f18a7cbb PL |
1373 | } |
1374 | ||
80cf6257 SH |
1375 | static void iscsi_detach_aio_context(BlockDriverState *bs) |
1376 | { | |
1377 | IscsiLun *iscsilun = bs->opaque; | |
1378 | ||
dca21ef2 FZ |
1379 | aio_set_fd_handler(iscsilun->aio_context, iscsi_get_fd(iscsilun->iscsi), |
1380 | false, NULL, NULL, NULL); | |
80cf6257 SH |
1381 | iscsilun->events = 0; |
1382 | ||
1383 | if (iscsilun->nop_timer) { | |
1384 | timer_del(iscsilun->nop_timer); | |
1385 | timer_free(iscsilun->nop_timer); | |
1386 | iscsilun->nop_timer = NULL; | |
1387 | } | |
05b685fb PL |
1388 | if (iscsilun->event_timer) { |
1389 | timer_del(iscsilun->event_timer); | |
1390 | timer_free(iscsilun->event_timer); | |
1391 | iscsilun->event_timer = NULL; | |
1392 | } | |
80cf6257 SH |
1393 | } |
1394 | ||
1395 | static void iscsi_attach_aio_context(BlockDriverState *bs, | |
1396 | AioContext *new_context) | |
1397 | { | |
1398 | IscsiLun *iscsilun = bs->opaque; | |
1399 | ||
1400 | iscsilun->aio_context = new_context; | |
1401 | iscsi_set_events(iscsilun); | |
1402 | ||
80cf6257 SH |
1403 | /* Set up a timer for sending out iSCSI NOPs */ |
1404 | iscsilun->nop_timer = aio_timer_new(iscsilun->aio_context, | |
1405 | QEMU_CLOCK_REALTIME, SCALE_MS, | |
1406 | iscsi_nop_timed_event, iscsilun); | |
1407 | timer_mod(iscsilun->nop_timer, | |
1408 | qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + NOP_INTERVAL); | |
05b685fb | 1409 | |
5dd7a535 PL |
1410 | /* Set up a timer for periodic calls to iscsi_set_events and to |
1411 | * scan for command timeout */ | |
05b685fb PL |
1412 | iscsilun->event_timer = aio_timer_new(iscsilun->aio_context, |
1413 | QEMU_CLOCK_REALTIME, SCALE_MS, | |
5dd7a535 PL |
1414 | iscsi_timed_check_events, iscsilun); |
1415 | timer_mod(iscsilun->event_timer, | |
1416 | qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + EVENT_INTERVAL); | |
80cf6257 SH |
1417 | } |
1418 | ||
7191f208 | 1419 | static void iscsi_modesense_sync(IscsiLun *iscsilun) |
c1d4096b FZ |
1420 | { |
1421 | struct scsi_task *task; | |
1422 | struct scsi_mode_sense *ms = NULL; | |
7191f208 | 1423 | iscsilun->write_protected = false; |
752ce451 | 1424 | iscsilun->dpofua = false; |
c1d4096b FZ |
1425 | |
1426 | task = iscsi_modesense6_sync(iscsilun->iscsi, iscsilun->lun, | |
1427 | 1, SCSI_MODESENSE_PC_CURRENT, | |
1428 | 0x3F, 0, 255); | |
1429 | if (task == NULL) { | |
1430 | error_report("iSCSI: Failed to send MODE_SENSE(6) command: %s", | |
1431 | iscsi_get_error(iscsilun->iscsi)); | |
1432 | goto out; | |
1433 | } | |
1434 | ||
1435 | if (task->status != SCSI_STATUS_GOOD) { | |
1436 | error_report("iSCSI: Failed MODE_SENSE(6), LUN assumed writable"); | |
1437 | goto out; | |
1438 | } | |
1439 | ms = scsi_datain_unmarshall(task); | |
1440 | if (!ms) { | |
1441 | error_report("iSCSI: Failed to unmarshall MODE_SENSE(6) data: %s", | |
1442 | iscsi_get_error(iscsilun->iscsi)); | |
1443 | goto out; | |
1444 | } | |
7191f208 | 1445 | iscsilun->write_protected = ms->device_specific_parameter & 0x80; |
752ce451 | 1446 | iscsilun->dpofua = ms->device_specific_parameter & 0x10; |
c1d4096b FZ |
1447 | |
1448 | out: | |
1449 | if (task) { | |
1450 | scsi_free_scsi_task(task); | |
1451 | } | |
c1d4096b FZ |
1452 | } |
1453 | ||
c589b249 RS |
1454 | /* |
1455 | * We support iscsi url's on the form | |
1456 | * iscsi://[<username>%<password>@]<host>[:<port>]/<targetname>/<lun> | |
1457 | */ | |
015a1036 HR |
1458 | static int iscsi_open(BlockDriverState *bs, QDict *options, int flags, |
1459 | Error **errp) | |
c589b249 RS |
1460 | { |
1461 | IscsiLun *iscsilun = bs->opaque; | |
1462 | struct iscsi_context *iscsi = NULL; | |
1463 | struct iscsi_url *iscsi_url = NULL; | |
e829b0bb PL |
1464 | struct scsi_task *task = NULL; |
1465 | struct scsi_inquiry_standard *inq = NULL; | |
24d3bd67 | 1466 | struct scsi_inquiry_supported_pages *inq_vpd; |
f9dadc98 | 1467 | char *initiator_name = NULL; |
60beb341 KW |
1468 | QemuOpts *opts; |
1469 | Error *local_err = NULL; | |
1470 | const char *filename; | |
9049736e | 1471 | int i, ret = 0, timeout = 0; |
c589b249 | 1472 | |
87ea75d5 | 1473 | opts = qemu_opts_create(&runtime_opts, NULL, 0, &error_abort); |
60beb341 | 1474 | qemu_opts_absorb_qdict(opts, options, &local_err); |
84d18f06 | 1475 | if (local_err) { |
f2917853 | 1476 | error_propagate(errp, local_err); |
60beb341 KW |
1477 | ret = -EINVAL; |
1478 | goto out; | |
1479 | } | |
1480 | ||
1481 | filename = qemu_opt_get(opts, "filename"); | |
1482 | ||
c589b249 RS |
1483 | iscsi_url = iscsi_parse_full_url(iscsi, filename); |
1484 | if (iscsi_url == NULL) { | |
f2917853 | 1485 | error_setg(errp, "Failed to parse URL : %s", filename); |
c589b249 | 1486 | ret = -EINVAL; |
b93c94f7 | 1487 | goto out; |
c589b249 RS |
1488 | } |
1489 | ||
f9dadc98 RS |
1490 | memset(iscsilun, 0, sizeof(IscsiLun)); |
1491 | ||
1492 | initiator_name = parse_initiator_name(iscsi_url->target); | |
1493 | ||
1494 | iscsi = iscsi_create_context(initiator_name); | |
1495 | if (iscsi == NULL) { | |
f2917853 | 1496 | error_setg(errp, "iSCSI: Failed to create iSCSI context."); |
f9dadc98 | 1497 | ret = -ENOMEM; |
b93c94f7 | 1498 | goto out; |
f9dadc98 RS |
1499 | } |
1500 | ||
c589b249 | 1501 | if (iscsi_set_targetname(iscsi, iscsi_url->target)) { |
f2917853 | 1502 | error_setg(errp, "iSCSI: Failed to set target name."); |
c589b249 | 1503 | ret = -EINVAL; |
b93c94f7 | 1504 | goto out; |
c589b249 RS |
1505 | } |
1506 | ||
532cee41 | 1507 | if (iscsi_url->user[0] != '\0') { |
c589b249 RS |
1508 | ret = iscsi_set_initiator_username_pwd(iscsi, iscsi_url->user, |
1509 | iscsi_url->passwd); | |
1510 | if (ret != 0) { | |
f2917853 | 1511 | error_setg(errp, "Failed to set initiator username and password"); |
c589b249 | 1512 | ret = -EINVAL; |
b93c94f7 | 1513 | goto out; |
c589b249 RS |
1514 | } |
1515 | } | |
f9dadc98 RS |
1516 | |
1517 | /* check if we got CHAP username/password via the options */ | |
f2917853 PB |
1518 | parse_chap(iscsi, iscsi_url->target, &local_err); |
1519 | if (local_err != NULL) { | |
1520 | error_propagate(errp, local_err); | |
f9dadc98 | 1521 | ret = -EINVAL; |
b93c94f7 | 1522 | goto out; |
f9dadc98 RS |
1523 | } |
1524 | ||
c589b249 | 1525 | if (iscsi_set_session_type(iscsi, ISCSI_SESSION_NORMAL) != 0) { |
f2917853 | 1526 | error_setg(errp, "iSCSI: Failed to set session type to normal."); |
c589b249 | 1527 | ret = -EINVAL; |
b93c94f7 | 1528 | goto out; |
c589b249 RS |
1529 | } |
1530 | ||
1531 | iscsi_set_header_digest(iscsi, ISCSI_HEADER_DIGEST_NONE_CRC32C); | |
1532 | ||
f9dadc98 | 1533 | /* check if we got HEADER_DIGEST via the options */ |
f2917853 PB |
1534 | parse_header_digest(iscsi, iscsi_url->target, &local_err); |
1535 | if (local_err != NULL) { | |
1536 | error_propagate(errp, local_err); | |
1537 | ret = -EINVAL; | |
1538 | goto out; | |
1539 | } | |
f9dadc98 | 1540 | |
9049736e PL |
1541 | /* timeout handling is broken in libiscsi before 1.15.0 */ |
1542 | timeout = parse_timeout(iscsi_url->target); | |
1543 | #if defined(LIBISCSI_API_VERSION) && LIBISCSI_API_VERSION >= 20150621 | |
1544 | iscsi_set_timeout(iscsi, timeout); | |
1545 | #else | |
1546 | if (timeout) { | |
1547 | error_report("iSCSI: ignoring timeout value for libiscsi <1.15.0"); | |
1548 | } | |
1549 | #endif | |
5dd7a535 | 1550 | |
e829b0bb | 1551 | if (iscsi_full_connect_sync(iscsi, iscsi_url->portal, iscsi_url->lun) != 0) { |
f2917853 | 1552 | error_setg(errp, "iSCSI: Failed to connect to LUN : %s", |
e829b0bb PL |
1553 | iscsi_get_error(iscsi)); |
1554 | ret = -EINVAL; | |
1555 | goto out; | |
1556 | } | |
c589b249 RS |
1557 | |
1558 | iscsilun->iscsi = iscsi; | |
80cf6257 | 1559 | iscsilun->aio_context = bdrv_get_aio_context(bs); |
c589b249 | 1560 | iscsilun->lun = iscsi_url->lun; |
24d3bd67 | 1561 | iscsilun->has_write_same = true; |
c589b249 | 1562 | |
24d3bd67 PL |
1563 | task = iscsi_do_inquiry(iscsilun->iscsi, iscsilun->lun, 0, 0, |
1564 | (void **) &inq, errp); | |
1565 | if (task == NULL) { | |
c589b249 | 1566 | ret = -EINVAL; |
b93c94f7 | 1567 | goto out; |
c589b249 | 1568 | } |
e829b0bb | 1569 | iscsilun->type = inq->periperal_device_type; |
24d3bd67 PL |
1570 | scsi_free_scsi_task(task); |
1571 | task = NULL; | |
e829b0bb | 1572 | |
7191f208 | 1573 | iscsi_modesense_sync(iscsilun); |
4df863f3 EB |
1574 | if (iscsilun->dpofua) { |
1575 | bs->supported_write_flags = BDRV_REQ_FUA; | |
1576 | } | |
465fe887 | 1577 | bs->supported_zero_flags = BDRV_REQ_MAY_UNMAP; |
7191f208 | 1578 | |
c1d4096b FZ |
1579 | /* Check the write protect flag of the LUN if we want to write */ |
1580 | if (iscsilun->type == TYPE_DISK && (flags & BDRV_O_RDWR) && | |
43ae8fb1 | 1581 | iscsilun->write_protected) { |
c1d4096b FZ |
1582 | error_setg(errp, "Cannot open a write protected LUN as read-write"); |
1583 | ret = -EACCES; | |
1584 | goto out; | |
1585 | } | |
1586 | ||
f2917853 PB |
1587 | iscsi_readcapacity_sync(iscsilun, &local_err); |
1588 | if (local_err != NULL) { | |
1589 | error_propagate(errp, local_err); | |
cd82b6fb | 1590 | ret = -EINVAL; |
cb1b83e7 | 1591 | goto out; |
e829b0bb | 1592 | } |
0777b5dd | 1593 | bs->total_sectors = sector_lun2qemu(iscsilun->num_blocks, iscsilun); |
e829b0bb | 1594 | |
f47c3f5a KW |
1595 | /* We don't have any emulation for devices other than disks and CD-ROMs, so |
1596 | * this must be sg ioctl compatible. We force it to be sg, otherwise qemu | |
1597 | * will try to read from the device to guess the image format. | |
622695a4 | 1598 | */ |
f47c3f5a | 1599 | if (iscsilun->type != TYPE_DISK && iscsilun->type != TYPE_ROM) { |
54115412 | 1600 | bs->sg = true; |
622695a4 RS |
1601 | } |
1602 | ||
24d3bd67 PL |
1603 | task = iscsi_do_inquiry(iscsilun->iscsi, iscsilun->lun, 1, |
1604 | SCSI_INQUIRY_PAGECODE_SUPPORTED_VPD_PAGES, | |
1605 | (void **) &inq_vpd, errp); | |
1606 | if (task == NULL) { | |
1607 | ret = -EINVAL; | |
1608 | goto out; | |
f18a7cbb | 1609 | } |
24d3bd67 PL |
1610 | for (i = 0; i < inq_vpd->num_pages; i++) { |
1611 | struct scsi_task *inq_task; | |
1612 | struct scsi_inquiry_logical_block_provisioning *inq_lbp; | |
f18a7cbb | 1613 | struct scsi_inquiry_block_limits *inq_bl; |
24d3bd67 PL |
1614 | switch (inq_vpd->pages[i]) { |
1615 | case SCSI_INQUIRY_PAGECODE_LOGICAL_BLOCK_PROVISIONING: | |
1616 | inq_task = iscsi_do_inquiry(iscsilun->iscsi, iscsilun->lun, 1, | |
1617 | SCSI_INQUIRY_PAGECODE_LOGICAL_BLOCK_PROVISIONING, | |
1618 | (void **) &inq_lbp, errp); | |
1619 | if (inq_task == NULL) { | |
1620 | ret = -EINVAL; | |
1621 | goto out; | |
1622 | } | |
1623 | memcpy(&iscsilun->lbp, inq_lbp, | |
1624 | sizeof(struct scsi_inquiry_logical_block_provisioning)); | |
1625 | scsi_free_scsi_task(inq_task); | |
1626 | break; | |
1627 | case SCSI_INQUIRY_PAGECODE_BLOCK_LIMITS: | |
1628 | inq_task = iscsi_do_inquiry(iscsilun->iscsi, iscsilun->lun, 1, | |
1629 | SCSI_INQUIRY_PAGECODE_BLOCK_LIMITS, | |
1630 | (void **) &inq_bl, errp); | |
1631 | if (inq_task == NULL) { | |
1632 | ret = -EINVAL; | |
1633 | goto out; | |
1634 | } | |
1635 | memcpy(&iscsilun->bl, inq_bl, | |
1636 | sizeof(struct scsi_inquiry_block_limits)); | |
1637 | scsi_free_scsi_task(inq_task); | |
1638 | break; | |
1639 | default: | |
1640 | break; | |
f18a7cbb | 1641 | } |
f18a7cbb | 1642 | } |
24d3bd67 PL |
1643 | scsi_free_scsi_task(task); |
1644 | task = NULL; | |
f18a7cbb | 1645 | |
80cf6257 | 1646 | iscsi_attach_aio_context(bs, iscsilun->aio_context); |
5b5d34ec | 1647 | |
b03c3805 PL |
1648 | /* Guess the internal cluster (page) size of the iscsi target by the means |
1649 | * of opt_unmap_gran. Transfer the unmap granularity only if it has a | |
1650 | * reasonable size */ | |
3d2acaa3 | 1651 | if (iscsilun->bl.opt_unmap_gran * iscsilun->block_size >= 4 * 1024 && |
b03c3805 PL |
1652 | iscsilun->bl.opt_unmap_gran * iscsilun->block_size <= 16 * 1024 * 1024) { |
1653 | iscsilun->cluster_sectors = (iscsilun->bl.opt_unmap_gran * | |
1654 | iscsilun->block_size) >> BDRV_SECTOR_BITS; | |
9eac3622 | 1655 | if (iscsilun->lbprz) { |
a9fe4c95 PL |
1656 | iscsilun->allocationmap = iscsi_allocationmap_init(iscsilun); |
1657 | if (iscsilun->allocationmap == NULL) { | |
1658 | ret = -ENOMEM; | |
1659 | } | |
b03c3805 | 1660 | } |
b03c3805 PL |
1661 | } |
1662 | ||
b93c94f7 | 1663 | out: |
60beb341 | 1664 | qemu_opts_del(opts); |
f7047c2d | 1665 | g_free(initiator_name); |
c589b249 RS |
1666 | if (iscsi_url != NULL) { |
1667 | iscsi_destroy_url(iscsi_url); | |
1668 | } | |
e829b0bb PL |
1669 | if (task != NULL) { |
1670 | scsi_free_scsi_task(task); | |
1671 | } | |
b93c94f7 PB |
1672 | |
1673 | if (ret) { | |
1674 | if (iscsi != NULL) { | |
20474e9a PL |
1675 | if (iscsi_is_logged_in(iscsi)) { |
1676 | iscsi_logout_sync(iscsi); | |
1677 | } | |
b93c94f7 PB |
1678 | iscsi_destroy_context(iscsi); |
1679 | } | |
1680 | memset(iscsilun, 0, sizeof(IscsiLun)); | |
c589b249 | 1681 | } |
c589b249 RS |
1682 | return ret; |
1683 | } | |
1684 | ||
1685 | static void iscsi_close(BlockDriverState *bs) | |
1686 | { | |
1687 | IscsiLun *iscsilun = bs->opaque; | |
1688 | struct iscsi_context *iscsi = iscsilun->iscsi; | |
1689 | ||
80cf6257 | 1690 | iscsi_detach_aio_context(bs); |
20474e9a PL |
1691 | if (iscsi_is_logged_in(iscsi)) { |
1692 | iscsi_logout_sync(iscsi); | |
1693 | } | |
c589b249 | 1694 | iscsi_destroy_context(iscsi); |
d4cd9615 | 1695 | g_free(iscsilun->zeroblock); |
b03c3805 | 1696 | g_free(iscsilun->allocationmap); |
c589b249 RS |
1697 | memset(iscsilun, 0, sizeof(IscsiLun)); |
1698 | } | |
1699 | ||
52f6fa14 PL |
1700 | static void iscsi_refresh_limits(BlockDriverState *bs, Error **errp) |
1701 | { | |
d34682cd KW |
1702 | /* We don't actually refresh here, but just return data queried in |
1703 | * iscsi_open(): iscsi targets don't change their limits. */ | |
52f6fa14 PL |
1704 | |
1705 | IscsiLun *iscsilun = bs->opaque; | |
5def6b80 | 1706 | uint64_t max_xfer_len = iscsilun->use_16_for_rw ? 0xffffffff : 0xffff; |
52f6fa14 | 1707 | |
a5b8dd2c | 1708 | bs->bl.request_alignment = iscsilun->block_size; |
c8b3b998 | 1709 | |
52f6fa14 PL |
1710 | if (iscsilun->bl.max_xfer_len) { |
1711 | max_xfer_len = MIN(max_xfer_len, iscsilun->bl.max_xfer_len); | |
1712 | } | |
1713 | ||
5def6b80 EB |
1714 | if (max_xfer_len * iscsilun->block_size < INT_MAX) { |
1715 | bs->bl.max_transfer = max_xfer_len * iscsilun->block_size; | |
1716 | } | |
52f6fa14 | 1717 | |
c97ca29d | 1718 | if (iscsilun->lbp.lbpu) { |
b9f7855a EB |
1719 | if (iscsilun->bl.max_unmap < 0xffffffff / iscsilun->block_size) { |
1720 | bs->bl.max_pdiscard = | |
1721 | iscsilun->bl.max_unmap * iscsilun->block_size; | |
d34682cd | 1722 | } |
b9f7855a EB |
1723 | bs->bl.pdiscard_alignment = |
1724 | iscsilun->bl.opt_unmap_gran * iscsilun->block_size; | |
8b184744 | 1725 | } else { |
b9f7855a | 1726 | bs->bl.pdiscard_alignment = iscsilun->block_size; |
c97ca29d | 1727 | } |
d34682cd | 1728 | |
cf081fca EB |
1729 | if (iscsilun->bl.max_ws_len < 0xffffffff / iscsilun->block_size) { |
1730 | bs->bl.max_pwrite_zeroes = | |
1731 | iscsilun->bl.max_ws_len * iscsilun->block_size; | |
c97ca29d PB |
1732 | } |
1733 | if (iscsilun->lbp.lbpws) { | |
cf081fca EB |
1734 | bs->bl.pwrite_zeroes_alignment = |
1735 | iscsilun->bl.opt_unmap_gran * iscsilun->block_size; | |
8b184744 | 1736 | } else { |
cf081fca | 1737 | bs->bl.pwrite_zeroes_alignment = iscsilun->block_size; |
d34682cd | 1738 | } |
5def6b80 EB |
1739 | if (iscsilun->bl.opt_xfer_len && |
1740 | iscsilun->bl.opt_xfer_len < INT_MAX / iscsilun->block_size) { | |
1741 | bs->bl.opt_transfer = pow2floor(iscsilun->bl.opt_xfer_len * | |
1742 | iscsilun->block_size); | |
1743 | } | |
e9f526ab | 1744 | } |
d34682cd | 1745 | |
43ae8fb1 FZ |
1746 | /* Note that this will not re-establish a connection with an iSCSI target - it |
1747 | * is effectively a NOP. */ | |
dc6afb99 JC |
1748 | static int iscsi_reopen_prepare(BDRVReopenState *state, |
1749 | BlockReopenQueue *queue, Error **errp) | |
1750 | { | |
43ae8fb1 FZ |
1751 | IscsiLun *iscsilun = state->bs->opaque; |
1752 | ||
1753 | if (state->flags & BDRV_O_RDWR && iscsilun->write_protected) { | |
1754 | error_setg(errp, "Cannot open a write protected LUN as read-write"); | |
1755 | return -EACCES; | |
1756 | } | |
d34682cd KW |
1757 | return 0; |
1758 | } | |
1759 | ||
cb1b83e7 PL |
1760 | static int iscsi_truncate(BlockDriverState *bs, int64_t offset) |
1761 | { | |
1762 | IscsiLun *iscsilun = bs->opaque; | |
f2917853 | 1763 | Error *local_err = NULL; |
cb1b83e7 PL |
1764 | |
1765 | if (iscsilun->type != TYPE_DISK) { | |
1766 | return -ENOTSUP; | |
1767 | } | |
1768 | ||
f2917853 PB |
1769 | iscsi_readcapacity_sync(iscsilun, &local_err); |
1770 | if (local_err != NULL) { | |
1771 | error_free(local_err); | |
1772 | return -EIO; | |
cb1b83e7 PL |
1773 | } |
1774 | ||
1775 | if (offset > iscsi_getlength(bs)) { | |
1776 | return -EINVAL; | |
1777 | } | |
1778 | ||
b03c3805 PL |
1779 | if (iscsilun->allocationmap != NULL) { |
1780 | g_free(iscsilun->allocationmap); | |
a9fe4c95 | 1781 | iscsilun->allocationmap = iscsi_allocationmap_init(iscsilun); |
b03c3805 PL |
1782 | } |
1783 | ||
cb1b83e7 PL |
1784 | return 0; |
1785 | } | |
1786 | ||
a59479e3 | 1787 | static int iscsi_create(const char *filename, QemuOpts *opts, Error **errp) |
de8864e5 PL |
1788 | { |
1789 | int ret = 0; | |
1790 | int64_t total_size = 0; | |
13c91cb7 | 1791 | BlockDriverState *bs; |
de8864e5 | 1792 | IscsiLun *iscsilun = NULL; |
60beb341 | 1793 | QDict *bs_options; |
de8864e5 | 1794 | |
e4e9986b | 1795 | bs = bdrv_new(); |
de8864e5 PL |
1796 | |
1797 | /* Read out options */ | |
c2eb918e HT |
1798 | total_size = DIV_ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0), |
1799 | BDRV_SECTOR_SIZE); | |
5839e53b | 1800 | bs->opaque = g_new0(struct IscsiLun, 1); |
13c91cb7 | 1801 | iscsilun = bs->opaque; |
de8864e5 | 1802 | |
60beb341 KW |
1803 | bs_options = qdict_new(); |
1804 | qdict_put(bs_options, "filename", qstring_from_str(filename)); | |
015a1036 | 1805 | ret = iscsi_open(bs, bs_options, 0, NULL); |
60beb341 KW |
1806 | QDECREF(bs_options); |
1807 | ||
de8864e5 PL |
1808 | if (ret != 0) { |
1809 | goto out; | |
1810 | } | |
80cf6257 | 1811 | iscsi_detach_aio_context(bs); |
de8864e5 PL |
1812 | if (iscsilun->type != TYPE_DISK) { |
1813 | ret = -ENODEV; | |
1814 | goto out; | |
1815 | } | |
13c91cb7 | 1816 | if (bs->total_sectors < total_size) { |
de8864e5 | 1817 | ret = -ENOSPC; |
d3bda7bc | 1818 | goto out; |
de8864e5 PL |
1819 | } |
1820 | ||
1821 | ret = 0; | |
1822 | out: | |
1823 | if (iscsilun->iscsi != NULL) { | |
1824 | iscsi_destroy_context(iscsilun->iscsi); | |
1825 | } | |
13c91cb7 FZ |
1826 | g_free(bs->opaque); |
1827 | bs->opaque = NULL; | |
4f6fd349 | 1828 | bdrv_unref(bs); |
de8864e5 PL |
1829 | return ret; |
1830 | } | |
1831 | ||
186d4f2b PL |
1832 | static int iscsi_get_info(BlockDriverState *bs, BlockDriverInfo *bdi) |
1833 | { | |
1834 | IscsiLun *iscsilun = bs->opaque; | |
0a386e48 | 1835 | bdi->unallocated_blocks_are_zero = iscsilun->lbprz; |
186d4f2b | 1836 | bdi->can_write_zeroes_with_unmap = iscsilun->lbprz && iscsilun->lbp.lbpws; |
b03c3805 | 1837 | bdi->cluster_size = iscsilun->cluster_sectors * BDRV_SECTOR_SIZE; |
186d4f2b PL |
1838 | return 0; |
1839 | } | |
1840 | ||
a59479e3 CL |
1841 | static QemuOptsList iscsi_create_opts = { |
1842 | .name = "iscsi-create-opts", | |
1843 | .head = QTAILQ_HEAD_INITIALIZER(iscsi_create_opts.head), | |
1844 | .desc = { | |
1845 | { | |
1846 | .name = BLOCK_OPT_SIZE, | |
1847 | .type = QEMU_OPT_SIZE, | |
1848 | .help = "Virtual disk size" | |
1849 | }, | |
1850 | { /* end of list */ } | |
1851 | } | |
de8864e5 PL |
1852 | }; |
1853 | ||
c589b249 RS |
1854 | static BlockDriver bdrv_iscsi = { |
1855 | .format_name = "iscsi", | |
1856 | .protocol_name = "iscsi", | |
1857 | ||
1858 | .instance_size = sizeof(IscsiLun), | |
030be321 | 1859 | .bdrv_needs_filename = true, |
c589b249 RS |
1860 | .bdrv_file_open = iscsi_open, |
1861 | .bdrv_close = iscsi_close, | |
c282e1fd | 1862 | .bdrv_create = iscsi_create, |
a59479e3 | 1863 | .create_opts = &iscsi_create_opts, |
dc6afb99 | 1864 | .bdrv_reopen_prepare = iscsi_reopen_prepare, |
c589b249 RS |
1865 | |
1866 | .bdrv_getlength = iscsi_getlength, | |
186d4f2b | 1867 | .bdrv_get_info = iscsi_get_info, |
cb1b83e7 | 1868 | .bdrv_truncate = iscsi_truncate, |
d34682cd | 1869 | .bdrv_refresh_limits = iscsi_refresh_limits, |
c589b249 | 1870 | |
54a5c1d5 | 1871 | .bdrv_co_get_block_status = iscsi_co_get_block_status, |
65f3e339 | 1872 | .bdrv_co_discard = iscsi_co_discard, |
94d047a3 | 1873 | .bdrv_co_pwrite_zeroes = iscsi_co_pwrite_zeroes, |
063c3378 | 1874 | .bdrv_co_readv = iscsi_co_readv, |
9f0eb9e1 | 1875 | .bdrv_co_writev_flags = iscsi_co_writev_flags, |
063c3378 | 1876 | .bdrv_co_flush_to_disk = iscsi_co_flush, |
fa6acb0c | 1877 | |
98392453 | 1878 | #ifdef __linux__ |
98392453 RS |
1879 | .bdrv_aio_ioctl = iscsi_aio_ioctl, |
1880 | #endif | |
80cf6257 SH |
1881 | |
1882 | .bdrv_detach_aio_context = iscsi_detach_aio_context, | |
1883 | .bdrv_attach_aio_context = iscsi_attach_aio_context, | |
c589b249 RS |
1884 | }; |
1885 | ||
4d454574 PB |
1886 | static QemuOptsList qemu_iscsi_opts = { |
1887 | .name = "iscsi", | |
1888 | .head = QTAILQ_HEAD_INITIALIZER(qemu_iscsi_opts.head), | |
1889 | .desc = { | |
1890 | { | |
1891 | .name = "user", | |
1892 | .type = QEMU_OPT_STRING, | |
1893 | .help = "username for CHAP authentication to target", | |
1894 | },{ | |
1895 | .name = "password", | |
1896 | .type = QEMU_OPT_STRING, | |
1897 | .help = "password for CHAP authentication to target", | |
b189346e DB |
1898 | },{ |
1899 | .name = "password-secret", | |
1900 | .type = QEMU_OPT_STRING, | |
1901 | .help = "ID of the secret providing password for CHAP " | |
1902 | "authentication to target", | |
4d454574 PB |
1903 | },{ |
1904 | .name = "header-digest", | |
1905 | .type = QEMU_OPT_STRING, | |
1906 | .help = "HeaderDigest setting. " | |
1907 | "{CRC32C|CRC32C-NONE|NONE-CRC32C|NONE}", | |
1908 | },{ | |
1909 | .name = "initiator-name", | |
1910 | .type = QEMU_OPT_STRING, | |
1911 | .help = "Initiator iqn name to use when connecting", | |
5dd7a535 PL |
1912 | },{ |
1913 | .name = "timeout", | |
1914 | .type = QEMU_OPT_NUMBER, | |
1915 | .help = "Request timeout in seconds (default 0 = no timeout)", | |
4d454574 PB |
1916 | }, |
1917 | { /* end of list */ } | |
1918 | }, | |
1919 | }; | |
1920 | ||
c589b249 RS |
1921 | static void iscsi_block_init(void) |
1922 | { | |
1923 | bdrv_register(&bdrv_iscsi); | |
4d454574 | 1924 | qemu_add_opts(&qemu_iscsi_opts); |
c589b249 RS |
1925 | } |
1926 | ||
1927 | block_init(iscsi_block_init); |