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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> | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
24 | ||
25 | #include "config-host.h" | |
26 | ||
27 | #include <poll.h> | |
f4dfa67f | 28 | #include <arpa/inet.h> |
c589b249 | 29 | #include "qemu-common.h" |
1de7afc9 PB |
30 | #include "qemu/config-file.h" |
31 | #include "qemu/error-report.h" | |
737e150e | 32 | #include "block/block_int.h" |
c589b249 | 33 | #include "trace.h" |
0d09e41a | 34 | #include "block/scsi.h" |
0a53f010 | 35 | #include "qemu/iov.h" |
5accc840 PB |
36 | #include "sysemu/sysemu.h" |
37 | #include "qmp-commands.h" | |
c589b249 RS |
38 | |
39 | #include <iscsi/iscsi.h> | |
40 | #include <iscsi/scsi-lowlevel.h> | |
41 | ||
98392453 RS |
42 | #ifdef __linux__ |
43 | #include <scsi/sg.h> | |
0d09e41a | 44 | #include <block/scsi.h> |
98392453 | 45 | #endif |
c589b249 RS |
46 | |
47 | typedef struct IscsiLun { | |
48 | struct iscsi_context *iscsi; | |
49 | int lun; | |
dbfff6d7 | 50 | enum scsi_inquiry_peripheral_device_type type; |
c589b249 | 51 | int block_size; |
c7b4a952 | 52 | uint64_t num_blocks; |
c9b9f682 | 53 | int events; |
5b5d34ec | 54 | QEMUTimer *nop_timer; |
f18a7cbb PL |
55 | uint8_t lbpme; |
56 | uint8_t lbprz; | |
57 | struct scsi_inquiry_logical_block_provisioning lbp; | |
58 | struct scsi_inquiry_block_limits bl; | |
c589b249 RS |
59 | } IscsiLun; |
60 | ||
54a5c1d5 PL |
61 | typedef struct IscsiTask { |
62 | int status; | |
63 | int complete; | |
64 | int retries; | |
65 | int do_retry; | |
66 | struct scsi_task *task; | |
67 | Coroutine *co; | |
68 | } IscsiTask; | |
69 | ||
c589b249 RS |
70 | typedef struct IscsiAIOCB { |
71 | BlockDriverAIOCB common; | |
72 | QEMUIOVector *qiov; | |
73 | QEMUBH *bh; | |
74 | IscsiLun *iscsilun; | |
75 | struct scsi_task *task; | |
76 | uint8_t *buf; | |
77 | int status; | |
78 | int canceled; | |
1dde716e | 79 | int retries; |
1dde716e PL |
80 | int64_t sector_num; |
81 | int nb_sectors; | |
98392453 RS |
82 | #ifdef __linux__ |
83 | sg_io_hdr_t *ioh; | |
84 | #endif | |
c589b249 RS |
85 | } IscsiAIOCB; |
86 | ||
5b5d34ec PL |
87 | #define NOP_INTERVAL 5000 |
88 | #define MAX_NOP_FAILURES 3 | |
1dde716e | 89 | #define ISCSI_CMD_RETRIES 5 |
5b5d34ec | 90 | |
27cbd828 | 91 | static void |
cfb3f506 | 92 | iscsi_bh_cb(void *p) |
27cbd828 PB |
93 | { |
94 | IscsiAIOCB *acb = p; | |
95 | ||
96 | qemu_bh_delete(acb->bh); | |
97 | ||
4790b03d PB |
98 | g_free(acb->buf); |
99 | acb->buf = NULL; | |
100 | ||
27cbd828 PB |
101 | if (acb->canceled == 0) { |
102 | acb->common.cb(acb->common.opaque, acb->status); | |
103 | } | |
104 | ||
1bd075f2 PB |
105 | if (acb->task != NULL) { |
106 | scsi_free_scsi_task(acb->task); | |
107 | acb->task = NULL; | |
108 | } | |
109 | ||
27cbd828 PB |
110 | qemu_aio_release(acb); |
111 | } | |
112 | ||
cfb3f506 PB |
113 | static void |
114 | iscsi_schedule_bh(IscsiAIOCB *acb) | |
27cbd828 | 115 | { |
1bd075f2 PB |
116 | if (acb->bh) { |
117 | return; | |
118 | } | |
cfb3f506 | 119 | acb->bh = qemu_bh_new(iscsi_bh_cb, acb); |
27cbd828 | 120 | qemu_bh_schedule(acb->bh); |
27cbd828 PB |
121 | } |
122 | ||
54a5c1d5 PL |
123 | static void |
124 | iscsi_co_generic_cb(struct iscsi_context *iscsi, int status, | |
125 | void *command_data, void *opaque) | |
126 | { | |
127 | struct IscsiTask *iTask = opaque; | |
128 | struct scsi_task *task = command_data; | |
129 | ||
130 | iTask->complete = 1; | |
131 | iTask->status = status; | |
132 | iTask->do_retry = 0; | |
133 | iTask->task = task; | |
134 | ||
135 | if (iTask->retries-- > 0 && status == SCSI_STATUS_CHECK_CONDITION | |
136 | && task->sense.key == SCSI_SENSE_UNIT_ATTENTION) { | |
137 | iTask->do_retry = 1; | |
138 | goto out; | |
139 | } | |
140 | ||
141 | if (status != SCSI_STATUS_GOOD) { | |
142 | error_report("iSCSI: Failure. %s", iscsi_get_error(iscsi)); | |
143 | } | |
144 | ||
145 | out: | |
146 | if (iTask->co) { | |
147 | qemu_coroutine_enter(iTask->co, NULL); | |
148 | } | |
149 | } | |
150 | ||
151 | static void iscsi_co_init_iscsitask(IscsiLun *iscsilun, struct IscsiTask *iTask) | |
152 | { | |
153 | *iTask = (struct IscsiTask) { | |
154 | .co = qemu_coroutine_self(), | |
155 | .retries = ISCSI_CMD_RETRIES, | |
156 | }; | |
157 | } | |
27cbd828 | 158 | |
c589b249 RS |
159 | static void |
160 | iscsi_abort_task_cb(struct iscsi_context *iscsi, int status, void *command_data, | |
161 | void *private_data) | |
162 | { | |
1bd075f2 PB |
163 | IscsiAIOCB *acb = private_data; |
164 | ||
165 | acb->status = -ECANCELED; | |
166 | iscsi_schedule_bh(acb); | |
c589b249 RS |
167 | } |
168 | ||
169 | static void | |
170 | iscsi_aio_cancel(BlockDriverAIOCB *blockacb) | |
171 | { | |
172 | IscsiAIOCB *acb = (IscsiAIOCB *)blockacb; | |
173 | IscsiLun *iscsilun = acb->iscsilun; | |
174 | ||
1bd075f2 PB |
175 | if (acb->status != -EINPROGRESS) { |
176 | return; | |
177 | } | |
178 | ||
b2090919 | 179 | acb->canceled = 1; |
c589b249 | 180 | |
b2090919 | 181 | /* send a task mgmt call to the target to cancel the task on the target */ |
64e69e80 | 182 | iscsi_task_mgmt_abort_task_async(iscsilun->iscsi, acb->task, |
1bd075f2 | 183 | iscsi_abort_task_cb, acb); |
b2090919 | 184 | |
1bd075f2 PB |
185 | while (acb->status == -EINPROGRESS) { |
186 | qemu_aio_wait(); | |
187 | } | |
c589b249 RS |
188 | } |
189 | ||
d7331bed | 190 | static const AIOCBInfo iscsi_aiocb_info = { |
c589b249 RS |
191 | .aiocb_size = sizeof(IscsiAIOCB), |
192 | .cancel = iscsi_aio_cancel, | |
193 | }; | |
194 | ||
195 | ||
196 | static void iscsi_process_read(void *arg); | |
197 | static void iscsi_process_write(void *arg); | |
198 | ||
c589b249 RS |
199 | static void |
200 | iscsi_set_events(IscsiLun *iscsilun) | |
201 | { | |
202 | struct iscsi_context *iscsi = iscsilun->iscsi; | |
c9b9f682 RS |
203 | int ev; |
204 | ||
205 | /* We always register a read handler. */ | |
206 | ev = POLLIN; | |
207 | ev |= iscsi_which_events(iscsi); | |
208 | if (ev != iscsilun->events) { | |
209 | qemu_aio_set_fd_handler(iscsi_get_fd(iscsi), | |
210 | iscsi_process_read, | |
211 | (ev & POLLOUT) ? iscsi_process_write : NULL, | |
c9b9f682 RS |
212 | iscsilun); |
213 | ||
214 | } | |
215 | ||
c9b9f682 | 216 | iscsilun->events = ev; |
c589b249 RS |
217 | } |
218 | ||
219 | static void | |
220 | iscsi_process_read(void *arg) | |
221 | { | |
222 | IscsiLun *iscsilun = arg; | |
223 | struct iscsi_context *iscsi = iscsilun->iscsi; | |
224 | ||
225 | iscsi_service(iscsi, POLLIN); | |
226 | iscsi_set_events(iscsilun); | |
227 | } | |
228 | ||
229 | static void | |
230 | iscsi_process_write(void *arg) | |
231 | { | |
232 | IscsiLun *iscsilun = arg; | |
233 | struct iscsi_context *iscsi = iscsilun->iscsi; | |
234 | ||
235 | iscsi_service(iscsi, POLLOUT); | |
236 | iscsi_set_events(iscsilun); | |
237 | } | |
238 | ||
1dde716e PL |
239 | static int |
240 | iscsi_aio_writev_acb(IscsiAIOCB *acb); | |
c589b249 | 241 | |
c589b249 | 242 | static void |
f4dfa67f | 243 | iscsi_aio_write16_cb(struct iscsi_context *iscsi, int status, |
c589b249 RS |
244 | void *command_data, void *opaque) |
245 | { | |
246 | IscsiAIOCB *acb = opaque; | |
247 | ||
f4dfa67f | 248 | trace_iscsi_aio_write16_cb(iscsi, status, acb, acb->canceled); |
c589b249 RS |
249 | |
250 | g_free(acb->buf); | |
4790b03d | 251 | acb->buf = NULL; |
c589b249 | 252 | |
b2090919 | 253 | if (acb->canceled != 0) { |
c589b249 RS |
254 | return; |
255 | } | |
256 | ||
257 | acb->status = 0; | |
1dde716e PL |
258 | if (status != 0) { |
259 | if (status == SCSI_STATUS_CHECK_CONDITION | |
260 | && acb->task->sense.key == SCSI_SENSE_UNIT_ATTENTION | |
261 | && acb->retries-- > 0) { | |
f0d2a4d4 PB |
262 | scsi_free_scsi_task(acb->task); |
263 | acb->task = NULL; | |
1dde716e PL |
264 | if (iscsi_aio_writev_acb(acb) == 0) { |
265 | iscsi_set_events(acb->iscsilun); | |
266 | return; | |
267 | } | |
268 | } | |
f4dfa67f | 269 | error_report("Failed to write16 data to iSCSI lun. %s", |
c589b249 RS |
270 | iscsi_get_error(iscsi)); |
271 | acb->status = -EIO; | |
272 | } | |
273 | ||
cfb3f506 | 274 | iscsi_schedule_bh(acb); |
c589b249 RS |
275 | } |
276 | ||
0777b5dd PL |
277 | static int64_t sector_lun2qemu(int64_t sector, IscsiLun *iscsilun) |
278 | { | |
279 | return sector * iscsilun->block_size / BDRV_SECTOR_SIZE; | |
280 | } | |
281 | ||
c589b249 RS |
282 | static int64_t sector_qemu2lun(int64_t sector, IscsiLun *iscsilun) |
283 | { | |
284 | return sector * BDRV_SECTOR_SIZE / iscsilun->block_size; | |
285 | } | |
286 | ||
91bea4e2 PL |
287 | static bool is_request_lun_aligned(int64_t sector_num, int nb_sectors, |
288 | IscsiLun *iscsilun) | |
289 | { | |
290 | if ((sector_num * BDRV_SECTOR_SIZE) % iscsilun->block_size || | |
291 | (nb_sectors * BDRV_SECTOR_SIZE) % iscsilun->block_size) { | |
f5075224 RJ |
292 | error_report("iSCSI misaligned request: " |
293 | "iscsilun->block_size %u, sector_num %" PRIi64 | |
294 | ", nb_sectors %d", | |
91bea4e2 PL |
295 | iscsilun->block_size, sector_num, nb_sectors); |
296 | return 0; | |
297 | } | |
298 | return 1; | |
299 | } | |
300 | ||
1dde716e PL |
301 | static int |
302 | iscsi_aio_writev_acb(IscsiAIOCB *acb) | |
c589b249 | 303 | { |
1dde716e | 304 | struct iscsi_context *iscsi = acb->iscsilun->iscsi; |
c589b249 | 305 | size_t size; |
f4dfa67f RS |
306 | uint32_t num_sectors; |
307 | uint64_t lba; | |
7371d56f | 308 | #if !defined(LIBISCSI_FEATURE_IOVECTOR) |
f4dfa67f | 309 | struct iscsi_data data; |
7371d56f PL |
310 | #endif |
311 | int ret; | |
c589b249 | 312 | |
c589b249 | 313 | acb->canceled = 0; |
1bd075f2 PB |
314 | acb->bh = NULL; |
315 | acb->status = -EINPROGRESS; | |
4790b03d | 316 | acb->buf = NULL; |
c589b249 | 317 | |
c589b249 | 318 | /* this will allow us to get rid of 'buf' completely */ |
1dde716e | 319 | size = acb->nb_sectors * BDRV_SECTOR_SIZE; |
7371d56f PL |
320 | |
321 | #if !defined(LIBISCSI_FEATURE_IOVECTOR) | |
4cc841b5 PL |
322 | data.size = MIN(size, acb->qiov->size); |
323 | ||
324 | /* if the iovec only contains one buffer we can pass it directly */ | |
325 | if (acb->qiov->niov == 1) { | |
4cc841b5 PL |
326 | data.data = acb->qiov->iov[0].iov_base; |
327 | } else { | |
328 | acb->buf = g_malloc(data.size); | |
329 | qemu_iovec_to_buf(acb->qiov, 0, acb->buf, data.size); | |
330 | data.data = acb->buf; | |
331 | } | |
7371d56f | 332 | #endif |
f4dfa67f RS |
333 | |
334 | acb->task = malloc(sizeof(struct scsi_task)); | |
c589b249 | 335 | if (acb->task == NULL) { |
f4dfa67f RS |
336 | error_report("iSCSI: Failed to allocate task for scsi WRITE16 " |
337 | "command. %s", iscsi_get_error(iscsi)); | |
1dde716e | 338 | return -1; |
f4dfa67f RS |
339 | } |
340 | memset(acb->task, 0, sizeof(struct scsi_task)); | |
341 | ||
342 | acb->task->xfer_dir = SCSI_XFER_WRITE; | |
343 | acb->task->cdb_size = 16; | |
344 | acb->task->cdb[0] = 0x8a; | |
1dde716e | 345 | lba = sector_qemu2lun(acb->sector_num, acb->iscsilun); |
f4dfa67f RS |
346 | *(uint32_t *)&acb->task->cdb[2] = htonl(lba >> 32); |
347 | *(uint32_t *)&acb->task->cdb[6] = htonl(lba & 0xffffffff); | |
0777b5dd | 348 | num_sectors = sector_qemu2lun(acb->nb_sectors, acb->iscsilun); |
f4dfa67f RS |
349 | *(uint32_t *)&acb->task->cdb[10] = htonl(num_sectors); |
350 | acb->task->expxferlen = size; | |
351 | ||
7371d56f | 352 | #if defined(LIBISCSI_FEATURE_IOVECTOR) |
1dde716e | 353 | ret = iscsi_scsi_command_async(iscsi, acb->iscsilun->lun, acb->task, |
7371d56f PL |
354 | iscsi_aio_write16_cb, |
355 | NULL, | |
356 | acb); | |
357 | #else | |
1dde716e | 358 | ret = iscsi_scsi_command_async(iscsi, acb->iscsilun->lun, acb->task, |
7371d56f PL |
359 | iscsi_aio_write16_cb, |
360 | &data, | |
361 | acb); | |
362 | #endif | |
363 | if (ret != 0) { | |
f0d2a4d4 | 364 | scsi_free_scsi_task(acb->task); |
c589b249 | 365 | g_free(acb->buf); |
1dde716e | 366 | return -1; |
c589b249 RS |
367 | } |
368 | ||
7371d56f PL |
369 | #if defined(LIBISCSI_FEATURE_IOVECTOR) |
370 | scsi_task_set_iov_out(acb->task, (struct scsi_iovec*) acb->qiov->iov, acb->qiov->niov); | |
371 | #endif | |
372 | ||
1dde716e PL |
373 | return 0; |
374 | } | |
375 | ||
376 | static BlockDriverAIOCB * | |
377 | iscsi_aio_writev(BlockDriverState *bs, int64_t sector_num, | |
378 | QEMUIOVector *qiov, int nb_sectors, | |
379 | BlockDriverCompletionFunc *cb, | |
380 | void *opaque) | |
381 | { | |
382 | IscsiLun *iscsilun = bs->opaque; | |
383 | IscsiAIOCB *acb; | |
c589b249 | 384 | |
91bea4e2 PL |
385 | if (!is_request_lun_aligned(sector_num, nb_sectors, iscsilun)) { |
386 | return NULL; | |
387 | } | |
388 | ||
1dde716e PL |
389 | acb = qemu_aio_get(&iscsi_aiocb_info, bs, cb, opaque); |
390 | trace_iscsi_aio_writev(iscsilun->iscsi, sector_num, nb_sectors, opaque, acb); | |
391 | ||
392 | acb->iscsilun = iscsilun; | |
393 | acb->qiov = qiov; | |
394 | acb->nb_sectors = nb_sectors; | |
395 | acb->sector_num = sector_num; | |
396 | acb->retries = ISCSI_CMD_RETRIES; | |
397 | ||
398 | if (iscsi_aio_writev_acb(acb) != 0) { | |
1dde716e PL |
399 | qemu_aio_release(acb); |
400 | return NULL; | |
401 | } | |
402 | ||
403 | iscsi_set_events(iscsilun); | |
c589b249 RS |
404 | return &acb->common; |
405 | } | |
406 | ||
1dde716e PL |
407 | static int |
408 | iscsi_aio_readv_acb(IscsiAIOCB *acb); | |
409 | ||
c589b249 | 410 | static void |
f4dfa67f | 411 | iscsi_aio_read16_cb(struct iscsi_context *iscsi, int status, |
c589b249 RS |
412 | void *command_data, void *opaque) |
413 | { | |
414 | IscsiAIOCB *acb = opaque; | |
415 | ||
f4dfa67f | 416 | trace_iscsi_aio_read16_cb(iscsi, status, acb, acb->canceled); |
c589b249 | 417 | |
b2090919 | 418 | if (acb->canceled != 0) { |
c589b249 RS |
419 | return; |
420 | } | |
421 | ||
422 | acb->status = 0; | |
423 | if (status != 0) { | |
1dde716e PL |
424 | if (status == SCSI_STATUS_CHECK_CONDITION |
425 | && acb->task->sense.key == SCSI_SENSE_UNIT_ATTENTION | |
426 | && acb->retries-- > 0) { | |
f0d2a4d4 PB |
427 | scsi_free_scsi_task(acb->task); |
428 | acb->task = NULL; | |
1dde716e PL |
429 | if (iscsi_aio_readv_acb(acb) == 0) { |
430 | iscsi_set_events(acb->iscsilun); | |
431 | return; | |
432 | } | |
433 | } | |
f4dfa67f | 434 | error_report("Failed to read16 data from iSCSI lun. %s", |
c589b249 RS |
435 | iscsi_get_error(iscsi)); |
436 | acb->status = -EIO; | |
437 | } | |
438 | ||
cfb3f506 | 439 | iscsi_schedule_bh(acb); |
c589b249 RS |
440 | } |
441 | ||
1dde716e PL |
442 | static int |
443 | iscsi_aio_readv_acb(IscsiAIOCB *acb) | |
c589b249 | 444 | { |
1dde716e | 445 | struct iscsi_context *iscsi = acb->iscsilun->iscsi; |
7e4d5a9f | 446 | size_t size; |
1dde716e PL |
447 | uint64_t lba; |
448 | uint32_t num_sectors; | |
449 | int ret; | |
7371d56f | 450 | #if !defined(LIBISCSI_FEATURE_IOVECTOR) |
c589b249 | 451 | int i; |
7371d56f | 452 | #endif |
c589b249 RS |
453 | |
454 | acb->canceled = 0; | |
1bd075f2 PB |
455 | acb->bh = NULL; |
456 | acb->status = -EINPROGRESS; | |
c589b249 RS |
457 | acb->buf = NULL; |
458 | ||
7e4d5a9f | 459 | size = acb->nb_sectors * BDRV_SECTOR_SIZE; |
f4dfa67f RS |
460 | |
461 | acb->task = malloc(sizeof(struct scsi_task)); | |
c589b249 | 462 | if (acb->task == NULL) { |
f4dfa67f RS |
463 | error_report("iSCSI: Failed to allocate task for scsi READ16 " |
464 | "command. %s", iscsi_get_error(iscsi)); | |
1dde716e | 465 | return -1; |
f4dfa67f RS |
466 | } |
467 | memset(acb->task, 0, sizeof(struct scsi_task)); | |
468 | ||
469 | acb->task->xfer_dir = SCSI_XFER_READ; | |
7e4d5a9f | 470 | acb->task->expxferlen = size; |
1dde716e | 471 | lba = sector_qemu2lun(acb->sector_num, acb->iscsilun); |
7e4d5a9f | 472 | num_sectors = sector_qemu2lun(acb->nb_sectors, acb->iscsilun); |
f4dfa67f | 473 | |
1dde716e | 474 | switch (acb->iscsilun->type) { |
f4dfa67f RS |
475 | case TYPE_DISK: |
476 | acb->task->cdb_size = 16; | |
477 | acb->task->cdb[0] = 0x88; | |
478 | *(uint32_t *)&acb->task->cdb[2] = htonl(lba >> 32); | |
479 | *(uint32_t *)&acb->task->cdb[6] = htonl(lba & 0xffffffff); | |
480 | *(uint32_t *)&acb->task->cdb[10] = htonl(num_sectors); | |
481 | break; | |
482 | default: | |
483 | acb->task->cdb_size = 10; | |
484 | acb->task->cdb[0] = 0x28; | |
485 | *(uint32_t *)&acb->task->cdb[2] = htonl(lba); | |
486 | *(uint16_t *)&acb->task->cdb[7] = htons(num_sectors); | |
487 | break; | |
488 | } | |
e829b0bb | 489 | |
1dde716e | 490 | ret = iscsi_scsi_command_async(iscsi, acb->iscsilun->lun, acb->task, |
7371d56f PL |
491 | iscsi_aio_read16_cb, |
492 | NULL, | |
493 | acb); | |
494 | if (ret != 0) { | |
f0d2a4d4 | 495 | scsi_free_scsi_task(acb->task); |
1dde716e | 496 | return -1; |
c589b249 RS |
497 | } |
498 | ||
7371d56f PL |
499 | #if defined(LIBISCSI_FEATURE_IOVECTOR) |
500 | scsi_task_set_iov_in(acb->task, (struct scsi_iovec*) acb->qiov->iov, acb->qiov->niov); | |
501 | #else | |
c589b249 RS |
502 | for (i = 0; i < acb->qiov->niov; i++) { |
503 | scsi_task_add_data_in_buffer(acb->task, | |
504 | acb->qiov->iov[i].iov_len, | |
505 | acb->qiov->iov[i].iov_base); | |
506 | } | |
7371d56f | 507 | #endif |
1dde716e PL |
508 | return 0; |
509 | } | |
c589b249 | 510 | |
1dde716e PL |
511 | static BlockDriverAIOCB * |
512 | iscsi_aio_readv(BlockDriverState *bs, int64_t sector_num, | |
513 | QEMUIOVector *qiov, int nb_sectors, | |
514 | BlockDriverCompletionFunc *cb, | |
515 | void *opaque) | |
516 | { | |
517 | IscsiLun *iscsilun = bs->opaque; | |
518 | IscsiAIOCB *acb; | |
519 | ||
91bea4e2 PL |
520 | if (!is_request_lun_aligned(sector_num, nb_sectors, iscsilun)) { |
521 | return NULL; | |
522 | } | |
523 | ||
1dde716e PL |
524 | acb = qemu_aio_get(&iscsi_aiocb_info, bs, cb, opaque); |
525 | trace_iscsi_aio_readv(iscsilun->iscsi, sector_num, nb_sectors, opaque, acb); | |
526 | ||
527 | acb->nb_sectors = nb_sectors; | |
528 | acb->sector_num = sector_num; | |
529 | acb->iscsilun = iscsilun; | |
530 | acb->qiov = qiov; | |
1dde716e PL |
531 | acb->retries = ISCSI_CMD_RETRIES; |
532 | ||
533 | if (iscsi_aio_readv_acb(acb) != 0) { | |
1dde716e PL |
534 | qemu_aio_release(acb); |
535 | return NULL; | |
536 | } | |
c589b249 | 537 | |
1dde716e | 538 | iscsi_set_events(iscsilun); |
c589b249 RS |
539 | return &acb->common; |
540 | } | |
541 | ||
1dde716e PL |
542 | static int |
543 | iscsi_aio_flush_acb(IscsiAIOCB *acb); | |
c589b249 RS |
544 | |
545 | static void | |
546 | iscsi_synccache10_cb(struct iscsi_context *iscsi, int status, | |
547 | void *command_data, void *opaque) | |
548 | { | |
549 | IscsiAIOCB *acb = opaque; | |
550 | ||
b2090919 | 551 | if (acb->canceled != 0) { |
c589b249 RS |
552 | return; |
553 | } | |
554 | ||
555 | acb->status = 0; | |
1dde716e PL |
556 | if (status != 0) { |
557 | if (status == SCSI_STATUS_CHECK_CONDITION | |
558 | && acb->task->sense.key == SCSI_SENSE_UNIT_ATTENTION | |
559 | && acb->retries-- > 0) { | |
f0d2a4d4 PB |
560 | scsi_free_scsi_task(acb->task); |
561 | acb->task = NULL; | |
1dde716e PL |
562 | if (iscsi_aio_flush_acb(acb) == 0) { |
563 | iscsi_set_events(acb->iscsilun); | |
564 | return; | |
565 | } | |
566 | } | |
c589b249 RS |
567 | error_report("Failed to sync10 data on iSCSI lun. %s", |
568 | iscsi_get_error(iscsi)); | |
569 | acb->status = -EIO; | |
570 | } | |
571 | ||
cfb3f506 | 572 | iscsi_schedule_bh(acb); |
c589b249 RS |
573 | } |
574 | ||
1dde716e PL |
575 | static int |
576 | iscsi_aio_flush_acb(IscsiAIOCB *acb) | |
c589b249 | 577 | { |
1dde716e | 578 | struct iscsi_context *iscsi = acb->iscsilun->iscsi; |
c589b249 | 579 | |
c589b249 | 580 | acb->canceled = 0; |
1bd075f2 PB |
581 | acb->bh = NULL; |
582 | acb->status = -EINPROGRESS; | |
4790b03d | 583 | acb->buf = NULL; |
c589b249 | 584 | |
1dde716e | 585 | acb->task = iscsi_synchronizecache10_task(iscsi, acb->iscsilun->lun, |
c589b249 RS |
586 | 0, 0, 0, 0, |
587 | iscsi_synccache10_cb, | |
588 | acb); | |
589 | if (acb->task == NULL) { | |
590 | error_report("iSCSI: Failed to send synchronizecache10 command. %s", | |
591 | iscsi_get_error(iscsi)); | |
1dde716e PL |
592 | return -1; |
593 | } | |
594 | ||
595 | return 0; | |
596 | } | |
597 | ||
598 | static BlockDriverAIOCB * | |
599 | iscsi_aio_flush(BlockDriverState *bs, | |
600 | BlockDriverCompletionFunc *cb, void *opaque) | |
601 | { | |
602 | IscsiLun *iscsilun = bs->opaque; | |
603 | ||
604 | IscsiAIOCB *acb; | |
605 | ||
606 | acb = qemu_aio_get(&iscsi_aiocb_info, bs, cb, opaque); | |
607 | ||
608 | acb->iscsilun = iscsilun; | |
609 | acb->retries = ISCSI_CMD_RETRIES; | |
610 | ||
611 | if (iscsi_aio_flush_acb(acb) != 0) { | |
c589b249 RS |
612 | qemu_aio_release(acb); |
613 | return NULL; | |
614 | } | |
615 | ||
616 | iscsi_set_events(iscsilun); | |
617 | ||
618 | return &acb->common; | |
619 | } | |
620 | ||
98392453 RS |
621 | #ifdef __linux__ |
622 | static void | |
623 | iscsi_aio_ioctl_cb(struct iscsi_context *iscsi, int status, | |
624 | void *command_data, void *opaque) | |
625 | { | |
626 | IscsiAIOCB *acb = opaque; | |
627 | ||
0a53f010 RS |
628 | g_free(acb->buf); |
629 | acb->buf = NULL; | |
630 | ||
b2090919 | 631 | if (acb->canceled != 0) { |
98392453 RS |
632 | return; |
633 | } | |
634 | ||
635 | acb->status = 0; | |
636 | if (status < 0) { | |
637 | error_report("Failed to ioctl(SG_IO) to iSCSI lun. %s", | |
638 | iscsi_get_error(iscsi)); | |
639 | acb->status = -EIO; | |
640 | } | |
641 | ||
642 | acb->ioh->driver_status = 0; | |
643 | acb->ioh->host_status = 0; | |
644 | acb->ioh->resid = 0; | |
645 | ||
646 | #define SG_ERR_DRIVER_SENSE 0x08 | |
647 | ||
648 | if (status == SCSI_STATUS_CHECK_CONDITION && acb->task->datain.size >= 2) { | |
649 | int ss; | |
650 | ||
651 | acb->ioh->driver_status |= SG_ERR_DRIVER_SENSE; | |
652 | ||
653 | acb->ioh->sb_len_wr = acb->task->datain.size - 2; | |
654 | ss = (acb->ioh->mx_sb_len >= acb->ioh->sb_len_wr) ? | |
655 | acb->ioh->mx_sb_len : acb->ioh->sb_len_wr; | |
656 | memcpy(acb->ioh->sbp, &acb->task->datain.data[2], ss); | |
657 | } | |
658 | ||
cfb3f506 | 659 | iscsi_schedule_bh(acb); |
98392453 RS |
660 | } |
661 | ||
662 | static BlockDriverAIOCB *iscsi_aio_ioctl(BlockDriverState *bs, | |
663 | unsigned long int req, void *buf, | |
664 | BlockDriverCompletionFunc *cb, void *opaque) | |
665 | { | |
666 | IscsiLun *iscsilun = bs->opaque; | |
667 | struct iscsi_context *iscsi = iscsilun->iscsi; | |
668 | struct iscsi_data data; | |
669 | IscsiAIOCB *acb; | |
670 | ||
671 | assert(req == SG_IO); | |
672 | ||
d7331bed | 673 | acb = qemu_aio_get(&iscsi_aiocb_info, bs, cb, opaque); |
98392453 RS |
674 | |
675 | acb->iscsilun = iscsilun; | |
676 | acb->canceled = 0; | |
1bd075f2 PB |
677 | acb->bh = NULL; |
678 | acb->status = -EINPROGRESS; | |
98392453 RS |
679 | acb->buf = NULL; |
680 | acb->ioh = buf; | |
681 | ||
682 | acb->task = malloc(sizeof(struct scsi_task)); | |
683 | if (acb->task == NULL) { | |
684 | error_report("iSCSI: Failed to allocate task for scsi command. %s", | |
685 | iscsi_get_error(iscsi)); | |
686 | qemu_aio_release(acb); | |
687 | return NULL; | |
688 | } | |
689 | memset(acb->task, 0, sizeof(struct scsi_task)); | |
690 | ||
691 | switch (acb->ioh->dxfer_direction) { | |
692 | case SG_DXFER_TO_DEV: | |
693 | acb->task->xfer_dir = SCSI_XFER_WRITE; | |
694 | break; | |
695 | case SG_DXFER_FROM_DEV: | |
696 | acb->task->xfer_dir = SCSI_XFER_READ; | |
697 | break; | |
698 | default: | |
699 | acb->task->xfer_dir = SCSI_XFER_NONE; | |
700 | break; | |
701 | } | |
702 | ||
703 | acb->task->cdb_size = acb->ioh->cmd_len; | |
704 | memcpy(&acb->task->cdb[0], acb->ioh->cmdp, acb->ioh->cmd_len); | |
705 | acb->task->expxferlen = acb->ioh->dxfer_len; | |
706 | ||
0a53f010 | 707 | data.size = 0; |
98392453 | 708 | if (acb->task->xfer_dir == SCSI_XFER_WRITE) { |
0a53f010 RS |
709 | if (acb->ioh->iovec_count == 0) { |
710 | data.data = acb->ioh->dxferp; | |
711 | data.size = acb->ioh->dxfer_len; | |
712 | } else { | |
713 | #if defined(LIBISCSI_FEATURE_IOVECTOR) | |
714 | scsi_task_set_iov_out(acb->task, | |
715 | (struct scsi_iovec *) acb->ioh->dxferp, | |
716 | acb->ioh->iovec_count); | |
717 | #else | |
718 | struct iovec *iov = (struct iovec *)acb->ioh->dxferp; | |
719 | ||
720 | acb->buf = g_malloc(acb->ioh->dxfer_len); | |
721 | data.data = acb->buf; | |
722 | data.size = iov_to_buf(iov, acb->ioh->iovec_count, 0, | |
723 | acb->buf, acb->ioh->dxfer_len); | |
724 | #endif | |
725 | } | |
98392453 | 726 | } |
0a53f010 | 727 | |
98392453 RS |
728 | if (iscsi_scsi_command_async(iscsi, iscsilun->lun, acb->task, |
729 | iscsi_aio_ioctl_cb, | |
0a53f010 | 730 | (data.size > 0) ? &data : NULL, |
98392453 RS |
731 | acb) != 0) { |
732 | scsi_free_scsi_task(acb->task); | |
733 | qemu_aio_release(acb); | |
734 | return NULL; | |
735 | } | |
736 | ||
737 | /* tell libiscsi to read straight into the buffer we got from ioctl */ | |
738 | if (acb->task->xfer_dir == SCSI_XFER_READ) { | |
0a53f010 RS |
739 | if (acb->ioh->iovec_count == 0) { |
740 | scsi_task_add_data_in_buffer(acb->task, | |
741 | acb->ioh->dxfer_len, | |
742 | acb->ioh->dxferp); | |
743 | } else { | |
744 | #if defined(LIBISCSI_FEATURE_IOVECTOR) | |
745 | scsi_task_set_iov_in(acb->task, | |
746 | (struct scsi_iovec *) acb->ioh->dxferp, | |
747 | acb->ioh->iovec_count); | |
748 | #else | |
749 | int i; | |
750 | for (i = 0; i < acb->ioh->iovec_count; i++) { | |
751 | struct iovec *iov = (struct iovec *)acb->ioh->dxferp; | |
752 | ||
753 | scsi_task_add_data_in_buffer(acb->task, | |
754 | iov[i].iov_len, | |
755 | iov[i].iov_base); | |
756 | } | |
757 | #endif | |
758 | } | |
98392453 RS |
759 | } |
760 | ||
761 | iscsi_set_events(iscsilun); | |
762 | ||
763 | return &acb->common; | |
764 | } | |
765 | ||
f1a12821 RS |
766 | |
767 | static void ioctl_cb(void *opaque, int status) | |
768 | { | |
769 | int *p_status = opaque; | |
770 | *p_status = status; | |
771 | } | |
772 | ||
98392453 RS |
773 | static int iscsi_ioctl(BlockDriverState *bs, unsigned long int req, void *buf) |
774 | { | |
775 | IscsiLun *iscsilun = bs->opaque; | |
f1a12821 | 776 | int status; |
98392453 RS |
777 | |
778 | switch (req) { | |
779 | case SG_GET_VERSION_NUM: | |
780 | *(int *)buf = 30000; | |
781 | break; | |
782 | case SG_GET_SCSI_ID: | |
783 | ((struct sg_scsi_id *)buf)->scsi_type = iscsilun->type; | |
784 | break; | |
f1a12821 RS |
785 | case SG_IO: |
786 | status = -EINPROGRESS; | |
787 | iscsi_aio_ioctl(bs, req, buf, ioctl_cb, &status); | |
788 | ||
789 | while (status == -EINPROGRESS) { | |
790 | qemu_aio_wait(); | |
791 | } | |
792 | ||
793 | return 0; | |
98392453 RS |
794 | default: |
795 | return -1; | |
796 | } | |
797 | return 0; | |
798 | } | |
799 | #endif | |
800 | ||
c589b249 RS |
801 | static int64_t |
802 | iscsi_getlength(BlockDriverState *bs) | |
803 | { | |
804 | IscsiLun *iscsilun = bs->opaque; | |
805 | int64_t len; | |
806 | ||
807 | len = iscsilun->num_blocks; | |
808 | len *= iscsilun->block_size; | |
809 | ||
810 | return len; | |
811 | } | |
812 | ||
24c7608a | 813 | #if defined(LIBISCSI_FEATURE_IOVECTOR) |
f35c934a | 814 | |
54a5c1d5 PL |
815 | static int64_t coroutine_fn iscsi_co_get_block_status(BlockDriverState *bs, |
816 | int64_t sector_num, | |
817 | int nb_sectors, int *pnum) | |
818 | { | |
819 | IscsiLun *iscsilun = bs->opaque; | |
820 | struct scsi_get_lba_status *lbas = NULL; | |
821 | struct scsi_lba_status_descriptor *lbasd = NULL; | |
822 | struct IscsiTask iTask; | |
823 | int64_t ret; | |
824 | ||
825 | iscsi_co_init_iscsitask(iscsilun, &iTask); | |
826 | ||
827 | if (!is_request_lun_aligned(sector_num, nb_sectors, iscsilun)) { | |
828 | ret = -EINVAL; | |
829 | goto out; | |
830 | } | |
831 | ||
832 | /* default to all sectors allocated */ | |
833 | ret = BDRV_BLOCK_DATA; | |
834 | ret |= (sector_num << BDRV_SECTOR_BITS) | BDRV_BLOCK_OFFSET_VALID; | |
835 | *pnum = nb_sectors; | |
836 | ||
837 | /* LUN does not support logical block provisioning */ | |
838 | if (iscsilun->lbpme == 0) { | |
839 | goto out; | |
840 | } | |
841 | ||
842 | retry: | |
843 | if (iscsi_get_lba_status_task(iscsilun->iscsi, iscsilun->lun, | |
844 | sector_qemu2lun(sector_num, iscsilun), | |
845 | 8 + 16, iscsi_co_generic_cb, | |
846 | &iTask) == NULL) { | |
847 | ret = -EIO; | |
848 | goto out; | |
849 | } | |
850 | ||
851 | while (!iTask.complete) { | |
852 | iscsi_set_events(iscsilun); | |
853 | qemu_coroutine_yield(); | |
854 | } | |
855 | ||
856 | if (iTask.do_retry) { | |
857 | if (iTask.task != NULL) { | |
858 | scsi_free_scsi_task(iTask.task); | |
859 | iTask.task = NULL; | |
860 | } | |
861 | goto retry; | |
862 | } | |
863 | ||
864 | if (iTask.status != SCSI_STATUS_GOOD) { | |
865 | /* in case the get_lba_status_callout fails (i.e. | |
866 | * because the device is busy or the cmd is not | |
867 | * supported) we pretend all blocks are allocated | |
73f395fa | 868 | * for backwards compatibility */ |
54a5c1d5 PL |
869 | goto out; |
870 | } | |
871 | ||
872 | lbas = scsi_datain_unmarshall(iTask.task); | |
873 | if (lbas == NULL) { | |
874 | ret = -EIO; | |
875 | goto out; | |
876 | } | |
877 | ||
878 | lbasd = &lbas->descriptors[0]; | |
879 | ||
880 | if (sector_qemu2lun(sector_num, iscsilun) != lbasd->lba) { | |
881 | ret = -EIO; | |
882 | goto out; | |
883 | } | |
884 | ||
885 | *pnum = sector_lun2qemu(lbasd->num_blocks, iscsilun); | |
886 | if (*pnum > nb_sectors) { | |
887 | *pnum = nb_sectors; | |
888 | } | |
889 | ||
890 | if (lbasd->provisioning == SCSI_PROVISIONING_TYPE_DEALLOCATED || | |
891 | lbasd->provisioning == SCSI_PROVISIONING_TYPE_ANCHORED) { | |
892 | ret &= ~BDRV_BLOCK_DATA; | |
893 | if (iscsilun->lbprz) { | |
894 | ret |= BDRV_BLOCK_ZERO; | |
895 | } | |
896 | } | |
897 | ||
898 | out: | |
899 | if (iTask.task != NULL) { | |
900 | scsi_free_scsi_task(iTask.task); | |
901 | } | |
902 | return ret; | |
903 | } | |
904 | ||
24c7608a | 905 | #endif /* LIBISCSI_FEATURE_IOVECTOR */ |
f35c934a | 906 | |
65f3e339 PL |
907 | static int |
908 | coroutine_fn iscsi_co_discard(BlockDriverState *bs, int64_t sector_num, | |
909 | int nb_sectors) | |
910 | { | |
911 | IscsiLun *iscsilun = bs->opaque; | |
912 | struct IscsiTask iTask; | |
913 | struct unmap_list list; | |
65f3e339 PL |
914 | |
915 | if (!is_request_lun_aligned(sector_num, nb_sectors, iscsilun)) { | |
916 | return -EINVAL; | |
917 | } | |
918 | ||
919 | if (!iscsilun->lbp.lbpu) { | |
920 | /* UNMAP is not supported by the target */ | |
921 | return 0; | |
922 | } | |
923 | ||
924 | list.lba = sector_qemu2lun(sector_num, iscsilun); | |
01a6a238 | 925 | list.num = sector_qemu2lun(nb_sectors, iscsilun); |
65f3e339 | 926 | |
01a6a238 | 927 | iscsi_co_init_iscsitask(iscsilun, &iTask); |
65f3e339 | 928 | retry: |
01a6a238 PL |
929 | if (iscsi_unmap_task(iscsilun->iscsi, iscsilun->lun, 0, 0, &list, 1, |
930 | iscsi_co_generic_cb, &iTask) == NULL) { | |
931 | return -EIO; | |
932 | } | |
65f3e339 | 933 | |
01a6a238 PL |
934 | while (!iTask.complete) { |
935 | iscsi_set_events(iscsilun); | |
936 | qemu_coroutine_yield(); | |
937 | } | |
65f3e339 | 938 | |
01a6a238 PL |
939 | if (iTask.task != NULL) { |
940 | scsi_free_scsi_task(iTask.task); | |
941 | iTask.task = NULL; | |
942 | } | |
65f3e339 | 943 | |
01a6a238 PL |
944 | if (iTask.do_retry) { |
945 | goto retry; | |
946 | } | |
65f3e339 | 947 | |
01a6a238 PL |
948 | if (iTask.status == SCSI_STATUS_CHECK_CONDITION) { |
949 | /* the target might fail with a check condition if it | |
950 | is not happy with the alignment of the UNMAP request | |
951 | we silently fail in this case */ | |
952 | return 0; | |
953 | } | |
65f3e339 | 954 | |
01a6a238 PL |
955 | if (iTask.status != SCSI_STATUS_GOOD) { |
956 | return -EIO; | |
65f3e339 PL |
957 | } |
958 | ||
959 | return 0; | |
960 | } | |
961 | ||
f9dadc98 RS |
962 | static int parse_chap(struct iscsi_context *iscsi, const char *target) |
963 | { | |
964 | QemuOptsList *list; | |
965 | QemuOpts *opts; | |
966 | const char *user = NULL; | |
967 | const char *password = NULL; | |
968 | ||
969 | list = qemu_find_opts("iscsi"); | |
970 | if (!list) { | |
971 | return 0; | |
972 | } | |
973 | ||
974 | opts = qemu_opts_find(list, target); | |
975 | if (opts == NULL) { | |
976 | opts = QTAILQ_FIRST(&list->head); | |
977 | if (!opts) { | |
978 | return 0; | |
979 | } | |
980 | } | |
981 | ||
982 | user = qemu_opt_get(opts, "user"); | |
983 | if (!user) { | |
984 | return 0; | |
985 | } | |
986 | ||
987 | password = qemu_opt_get(opts, "password"); | |
988 | if (!password) { | |
989 | error_report("CHAP username specified but no password was given"); | |
990 | return -1; | |
991 | } | |
992 | ||
993 | if (iscsi_set_initiator_username_pwd(iscsi, user, password)) { | |
994 | error_report("Failed to set initiator username and password"); | |
995 | return -1; | |
996 | } | |
997 | ||
998 | return 0; | |
999 | } | |
1000 | ||
1001 | static void parse_header_digest(struct iscsi_context *iscsi, const char *target) | |
1002 | { | |
1003 | QemuOptsList *list; | |
1004 | QemuOpts *opts; | |
1005 | const char *digest = NULL; | |
1006 | ||
1007 | list = qemu_find_opts("iscsi"); | |
1008 | if (!list) { | |
1009 | return; | |
1010 | } | |
1011 | ||
1012 | opts = qemu_opts_find(list, target); | |
1013 | if (opts == NULL) { | |
1014 | opts = QTAILQ_FIRST(&list->head); | |
1015 | if (!opts) { | |
1016 | return; | |
1017 | } | |
1018 | } | |
1019 | ||
1020 | digest = qemu_opt_get(opts, "header-digest"); | |
1021 | if (!digest) { | |
1022 | return; | |
1023 | } | |
1024 | ||
1025 | if (!strcmp(digest, "CRC32C")) { | |
1026 | iscsi_set_header_digest(iscsi, ISCSI_HEADER_DIGEST_CRC32C); | |
1027 | } else if (!strcmp(digest, "NONE")) { | |
1028 | iscsi_set_header_digest(iscsi, ISCSI_HEADER_DIGEST_NONE); | |
1029 | } else if (!strcmp(digest, "CRC32C-NONE")) { | |
1030 | iscsi_set_header_digest(iscsi, ISCSI_HEADER_DIGEST_CRC32C_NONE); | |
1031 | } else if (!strcmp(digest, "NONE-CRC32C")) { | |
1032 | iscsi_set_header_digest(iscsi, ISCSI_HEADER_DIGEST_NONE_CRC32C); | |
1033 | } else { | |
1034 | error_report("Invalid header-digest setting : %s", digest); | |
1035 | } | |
1036 | } | |
1037 | ||
1038 | static char *parse_initiator_name(const char *target) | |
1039 | { | |
1040 | QemuOptsList *list; | |
1041 | QemuOpts *opts; | |
5accc840 PB |
1042 | const char *name; |
1043 | char *iscsi_name; | |
1044 | UuidInfo *uuid_info; | |
f9dadc98 RS |
1045 | |
1046 | list = qemu_find_opts("iscsi"); | |
f2ef4a6d PB |
1047 | if (list) { |
1048 | opts = qemu_opts_find(list, target); | |
f9dadc98 | 1049 | if (!opts) { |
f2ef4a6d PB |
1050 | opts = QTAILQ_FIRST(&list->head); |
1051 | } | |
1052 | if (opts) { | |
1053 | name = qemu_opt_get(opts, "initiator-name"); | |
5accc840 PB |
1054 | if (name) { |
1055 | return g_strdup(name); | |
1056 | } | |
f9dadc98 RS |
1057 | } |
1058 | } | |
1059 | ||
5accc840 PB |
1060 | uuid_info = qmp_query_uuid(NULL); |
1061 | if (strcmp(uuid_info->UUID, UUID_NONE) == 0) { | |
1062 | name = qemu_get_vm_name(); | |
f2ef4a6d | 1063 | } else { |
5accc840 | 1064 | name = uuid_info->UUID; |
f9dadc98 | 1065 | } |
5accc840 PB |
1066 | iscsi_name = g_strdup_printf("iqn.2008-11.org.linux-kvm%s%s", |
1067 | name ? ":" : "", name ? name : ""); | |
1068 | qapi_free_UuidInfo(uuid_info); | |
1069 | return iscsi_name; | |
f9dadc98 RS |
1070 | } |
1071 | ||
5b5d34ec PL |
1072 | #if defined(LIBISCSI_FEATURE_NOP_COUNTER) |
1073 | static void iscsi_nop_timed_event(void *opaque) | |
1074 | { | |
1075 | IscsiLun *iscsilun = opaque; | |
1076 | ||
1077 | if (iscsi_get_nops_in_flight(iscsilun->iscsi) > MAX_NOP_FAILURES) { | |
1078 | error_report("iSCSI: NOP timeout. Reconnecting..."); | |
1079 | iscsi_reconnect(iscsilun->iscsi); | |
1080 | } | |
1081 | ||
1082 | if (iscsi_nop_out_async(iscsilun->iscsi, NULL, NULL, 0, NULL) != 0) { | |
1083 | error_report("iSCSI: failed to sent NOP-Out. Disabling NOP messages."); | |
1084 | return; | |
1085 | } | |
1086 | ||
bc72ad67 | 1087 | timer_mod(iscsilun->nop_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + NOP_INTERVAL); |
5b5d34ec PL |
1088 | iscsi_set_events(iscsilun); |
1089 | } | |
1090 | #endif | |
1091 | ||
cb1b83e7 PL |
1092 | static int iscsi_readcapacity_sync(IscsiLun *iscsilun) |
1093 | { | |
1094 | struct scsi_task *task = NULL; | |
1095 | struct scsi_readcapacity10 *rc10 = NULL; | |
1096 | struct scsi_readcapacity16 *rc16 = NULL; | |
1097 | int ret = 0; | |
1098 | int retries = ISCSI_CMD_RETRIES; | |
1099 | ||
1288844e PB |
1100 | do { |
1101 | if (task != NULL) { | |
1102 | scsi_free_scsi_task(task); | |
1103 | task = NULL; | |
cb1b83e7 | 1104 | } |
1288844e PB |
1105 | |
1106 | switch (iscsilun->type) { | |
1107 | case TYPE_DISK: | |
1108 | task = iscsi_readcapacity16_sync(iscsilun->iscsi, iscsilun->lun); | |
1109 | if (task != NULL && task->status == SCSI_STATUS_GOOD) { | |
1110 | rc16 = scsi_datain_unmarshall(task); | |
1111 | if (rc16 == NULL) { | |
1112 | error_report("iSCSI: Failed to unmarshall readcapacity16 data."); | |
1113 | ret = -EINVAL; | |
1114 | } else { | |
1115 | iscsilun->block_size = rc16->block_length; | |
1116 | iscsilun->num_blocks = rc16->returned_lba + 1; | |
f18a7cbb PL |
1117 | iscsilun->lbpme = rc16->lbpme; |
1118 | iscsilun->lbprz = rc16->lbprz; | |
1288844e PB |
1119 | } |
1120 | } | |
1121 | break; | |
1122 | case TYPE_ROM: | |
1123 | task = iscsi_readcapacity10_sync(iscsilun->iscsi, iscsilun->lun, 0, 0); | |
1124 | if (task != NULL && task->status == SCSI_STATUS_GOOD) { | |
1125 | rc10 = scsi_datain_unmarshall(task); | |
1126 | if (rc10 == NULL) { | |
1127 | error_report("iSCSI: Failed to unmarshall readcapacity10 data."); | |
1128 | ret = -EINVAL; | |
1129 | } else { | |
1130 | iscsilun->block_size = rc10->block_size; | |
1131 | if (rc10->lba == 0) { | |
1132 | /* blank disk loaded */ | |
1133 | iscsilun->num_blocks = 0; | |
1134 | } else { | |
1135 | iscsilun->num_blocks = rc10->lba + 1; | |
1136 | } | |
1137 | } | |
1138 | } | |
1139 | break; | |
1140 | default: | |
1141 | return 0; | |
cb1b83e7 | 1142 | } |
1288844e PB |
1143 | } while (task != NULL && task->status == SCSI_STATUS_CHECK_CONDITION |
1144 | && task->sense.key == SCSI_SENSE_UNIT_ATTENTION | |
1145 | && retries-- > 0); | |
cb1b83e7 | 1146 | |
1288844e PB |
1147 | if (task == NULL || task->status != SCSI_STATUS_GOOD) { |
1148 | error_report("iSCSI: failed to send readcapacity10 command."); | |
1149 | ret = -EINVAL; | |
1150 | } | |
cb1b83e7 PL |
1151 | if (task) { |
1152 | scsi_free_scsi_task(task); | |
1153 | } | |
cb1b83e7 PL |
1154 | return ret; |
1155 | } | |
1156 | ||
60beb341 KW |
1157 | /* TODO Convert to fine grained options */ |
1158 | static QemuOptsList runtime_opts = { | |
1159 | .name = "iscsi", | |
1160 | .head = QTAILQ_HEAD_INITIALIZER(runtime_opts.head), | |
1161 | .desc = { | |
1162 | { | |
1163 | .name = "filename", | |
1164 | .type = QEMU_OPT_STRING, | |
1165 | .help = "URL to the iscsi image", | |
1166 | }, | |
1167 | { /* end of list */ } | |
1168 | }, | |
1169 | }; | |
1170 | ||
f18a7cbb PL |
1171 | static struct scsi_task *iscsi_do_inquiry(struct iscsi_context *iscsi, |
1172 | int lun, int evpd, int pc) { | |
1173 | int full_size; | |
1174 | struct scsi_task *task = NULL; | |
1175 | task = iscsi_inquiry_sync(iscsi, lun, evpd, pc, 64); | |
1176 | if (task == NULL || task->status != SCSI_STATUS_GOOD) { | |
1177 | goto fail; | |
1178 | } | |
1179 | full_size = scsi_datain_getfullsize(task); | |
1180 | if (full_size > task->datain.size) { | |
1181 | scsi_free_scsi_task(task); | |
1182 | ||
1183 | /* we need more data for the full list */ | |
1184 | task = iscsi_inquiry_sync(iscsi, lun, evpd, pc, full_size); | |
1185 | if (task == NULL || task->status != SCSI_STATUS_GOOD) { | |
1186 | goto fail; | |
1187 | } | |
1188 | } | |
1189 | ||
1190 | return task; | |
1191 | ||
1192 | fail: | |
1193 | error_report("iSCSI: Inquiry command failed : %s", | |
1194 | iscsi_get_error(iscsi)); | |
1195 | if (task) { | |
1196 | scsi_free_scsi_task(task); | |
1197 | return NULL; | |
1198 | } | |
1199 | return NULL; | |
1200 | } | |
1201 | ||
c589b249 RS |
1202 | /* |
1203 | * We support iscsi url's on the form | |
1204 | * iscsi://[<username>%<password>@]<host>[:<port>]/<targetname>/<lun> | |
1205 | */ | |
015a1036 HR |
1206 | static int iscsi_open(BlockDriverState *bs, QDict *options, int flags, |
1207 | Error **errp) | |
c589b249 RS |
1208 | { |
1209 | IscsiLun *iscsilun = bs->opaque; | |
1210 | struct iscsi_context *iscsi = NULL; | |
1211 | struct iscsi_url *iscsi_url = NULL; | |
e829b0bb PL |
1212 | struct scsi_task *task = NULL; |
1213 | struct scsi_inquiry_standard *inq = NULL; | |
f9dadc98 | 1214 | char *initiator_name = NULL; |
60beb341 KW |
1215 | QemuOpts *opts; |
1216 | Error *local_err = NULL; | |
1217 | const char *filename; | |
c589b249 RS |
1218 | int ret; |
1219 | ||
1220 | if ((BDRV_SECTOR_SIZE % 512) != 0) { | |
1221 | error_report("iSCSI: Invalid BDRV_SECTOR_SIZE. " | |
1222 | "BDRV_SECTOR_SIZE(%lld) is not a multiple " | |
1223 | "of 512", BDRV_SECTOR_SIZE); | |
1224 | return -EINVAL; | |
1225 | } | |
1226 | ||
60beb341 KW |
1227 | opts = qemu_opts_create_nofail(&runtime_opts); |
1228 | qemu_opts_absorb_qdict(opts, options, &local_err); | |
1229 | if (error_is_set(&local_err)) { | |
1230 | qerror_report_err(local_err); | |
1231 | error_free(local_err); | |
1232 | ret = -EINVAL; | |
1233 | goto out; | |
1234 | } | |
1235 | ||
1236 | filename = qemu_opt_get(opts, "filename"); | |
1237 | ||
1238 | ||
c589b249 RS |
1239 | iscsi_url = iscsi_parse_full_url(iscsi, filename); |
1240 | if (iscsi_url == NULL) { | |
8da1e18b | 1241 | error_report("Failed to parse URL : %s", filename); |
c589b249 | 1242 | ret = -EINVAL; |
b93c94f7 | 1243 | goto out; |
c589b249 RS |
1244 | } |
1245 | ||
f9dadc98 RS |
1246 | memset(iscsilun, 0, sizeof(IscsiLun)); |
1247 | ||
1248 | initiator_name = parse_initiator_name(iscsi_url->target); | |
1249 | ||
1250 | iscsi = iscsi_create_context(initiator_name); | |
1251 | if (iscsi == NULL) { | |
1252 | error_report("iSCSI: Failed to create iSCSI context."); | |
1253 | ret = -ENOMEM; | |
b93c94f7 | 1254 | goto out; |
f9dadc98 RS |
1255 | } |
1256 | ||
c589b249 RS |
1257 | if (iscsi_set_targetname(iscsi, iscsi_url->target)) { |
1258 | error_report("iSCSI: Failed to set target name."); | |
1259 | ret = -EINVAL; | |
b93c94f7 | 1260 | goto out; |
c589b249 RS |
1261 | } |
1262 | ||
1263 | if (iscsi_url->user != NULL) { | |
1264 | ret = iscsi_set_initiator_username_pwd(iscsi, iscsi_url->user, | |
1265 | iscsi_url->passwd); | |
1266 | if (ret != 0) { | |
1267 | error_report("Failed to set initiator username and password"); | |
1268 | ret = -EINVAL; | |
b93c94f7 | 1269 | goto out; |
c589b249 RS |
1270 | } |
1271 | } | |
f9dadc98 RS |
1272 | |
1273 | /* check if we got CHAP username/password via the options */ | |
1274 | if (parse_chap(iscsi, iscsi_url->target) != 0) { | |
1275 | error_report("iSCSI: Failed to set CHAP user/password"); | |
1276 | ret = -EINVAL; | |
b93c94f7 | 1277 | goto out; |
f9dadc98 RS |
1278 | } |
1279 | ||
c589b249 RS |
1280 | if (iscsi_set_session_type(iscsi, ISCSI_SESSION_NORMAL) != 0) { |
1281 | error_report("iSCSI: Failed to set session type to normal."); | |
1282 | ret = -EINVAL; | |
b93c94f7 | 1283 | goto out; |
c589b249 RS |
1284 | } |
1285 | ||
1286 | iscsi_set_header_digest(iscsi, ISCSI_HEADER_DIGEST_NONE_CRC32C); | |
1287 | ||
f9dadc98 RS |
1288 | /* check if we got HEADER_DIGEST via the options */ |
1289 | parse_header_digest(iscsi, iscsi_url->target); | |
1290 | ||
e829b0bb PL |
1291 | if (iscsi_full_connect_sync(iscsi, iscsi_url->portal, iscsi_url->lun) != 0) { |
1292 | error_report("iSCSI: Failed to connect to LUN : %s", | |
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; | |
1300 | ||
e829b0bb PL |
1301 | task = iscsi_inquiry_sync(iscsi, iscsilun->lun, 0, 0, 36); |
1302 | ||
1303 | if (task == NULL || task->status != SCSI_STATUS_GOOD) { | |
1304 | error_report("iSCSI: failed to send inquiry command."); | |
c589b249 | 1305 | ret = -EINVAL; |
b93c94f7 | 1306 | goto out; |
c589b249 RS |
1307 | } |
1308 | ||
e829b0bb PL |
1309 | inq = scsi_datain_unmarshall(task); |
1310 | if (inq == NULL) { | |
1311 | error_report("iSCSI: Failed to unmarshall inquiry data."); | |
c589b249 | 1312 | ret = -EINVAL; |
b93c94f7 | 1313 | goto out; |
c589b249 | 1314 | } |
622695a4 | 1315 | |
e829b0bb PL |
1316 | iscsilun->type = inq->periperal_device_type; |
1317 | ||
cb1b83e7 PL |
1318 | if ((ret = iscsi_readcapacity_sync(iscsilun)) != 0) { |
1319 | goto out; | |
e829b0bb | 1320 | } |
0777b5dd | 1321 | bs->total_sectors = sector_lun2qemu(iscsilun->num_blocks, iscsilun); |
e829b0bb | 1322 | |
622695a4 RS |
1323 | /* Medium changer or tape. We dont have any emulation for this so this must |
1324 | * be sg ioctl compatible. We force it to be sg, otherwise qemu will try | |
1325 | * to read from the device to guess the image format. | |
1326 | */ | |
1327 | if (iscsilun->type == TYPE_MEDIUM_CHANGER || | |
1328 | iscsilun->type == TYPE_TAPE) { | |
1329 | bs->sg = 1; | |
1330 | } | |
1331 | ||
f18a7cbb PL |
1332 | if (iscsilun->lbpme) { |
1333 | struct scsi_inquiry_logical_block_provisioning *inq_lbp; | |
1334 | task = iscsi_do_inquiry(iscsilun->iscsi, iscsilun->lun, 1, | |
1335 | SCSI_INQUIRY_PAGECODE_LOGICAL_BLOCK_PROVISIONING); | |
1336 | if (task == NULL) { | |
1337 | ret = -EINVAL; | |
1338 | goto out; | |
1339 | } | |
1340 | inq_lbp = scsi_datain_unmarshall(task); | |
1341 | if (inq_lbp == NULL) { | |
1342 | error_report("iSCSI: failed to unmarshall inquiry datain blob"); | |
1343 | ret = -EINVAL; | |
1344 | goto out; | |
1345 | } | |
1346 | memcpy(&iscsilun->lbp, inq_lbp, | |
1347 | sizeof(struct scsi_inquiry_logical_block_provisioning)); | |
1348 | scsi_free_scsi_task(task); | |
1349 | task = NULL; | |
1350 | } | |
1351 | ||
1352 | if (iscsilun->lbp.lbpu || iscsilun->lbp.lbpws) { | |
1353 | struct scsi_inquiry_block_limits *inq_bl; | |
1354 | task = iscsi_do_inquiry(iscsilun->iscsi, iscsilun->lun, 1, | |
1355 | SCSI_INQUIRY_PAGECODE_BLOCK_LIMITS); | |
1356 | if (task == NULL) { | |
1357 | ret = -EINVAL; | |
1358 | goto out; | |
1359 | } | |
1360 | inq_bl = scsi_datain_unmarshall(task); | |
1361 | if (inq_bl == NULL) { | |
1362 | error_report("iSCSI: failed to unmarshall inquiry datain blob"); | |
1363 | ret = -EINVAL; | |
1364 | goto out; | |
1365 | } | |
1366 | memcpy(&iscsilun->bl, inq_bl, | |
1367 | sizeof(struct scsi_inquiry_block_limits)); | |
1368 | scsi_free_scsi_task(task); | |
1369 | task = NULL; | |
ba6c5919 PL |
1370 | |
1371 | if (iscsilun->bl.max_unmap < 0xffffffff) { | |
1372 | bs->bl.max_discard = sector_lun2qemu(iscsilun->bl.max_unmap, | |
1373 | iscsilun); | |
1374 | } | |
1375 | bs->bl.discard_alignment = sector_lun2qemu(iscsilun->bl.opt_unmap_gran, | |
1376 | iscsilun); | |
1377 | ||
1378 | if (iscsilun->bl.max_ws_len < 0xffffffff) { | |
1379 | bs->bl.max_write_zeroes = sector_lun2qemu(iscsilun->bl.max_ws_len, | |
1380 | iscsilun); | |
1381 | } | |
1382 | bs->bl.write_zeroes_alignment = sector_lun2qemu(iscsilun->bl.opt_unmap_gran, | |
1383 | iscsilun); | |
f18a7cbb PL |
1384 | } |
1385 | ||
5b5d34ec PL |
1386 | #if defined(LIBISCSI_FEATURE_NOP_COUNTER) |
1387 | /* Set up a timer for sending out iSCSI NOPs */ | |
bc72ad67 AB |
1388 | iscsilun->nop_timer = timer_new_ms(QEMU_CLOCK_REALTIME, iscsi_nop_timed_event, iscsilun); |
1389 | timer_mod(iscsilun->nop_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + NOP_INTERVAL); | |
5b5d34ec PL |
1390 | #endif |
1391 | ||
b93c94f7 | 1392 | out: |
60beb341 | 1393 | qemu_opts_del(opts); |
f9dadc98 RS |
1394 | if (initiator_name != NULL) { |
1395 | g_free(initiator_name); | |
1396 | } | |
c589b249 RS |
1397 | if (iscsi_url != NULL) { |
1398 | iscsi_destroy_url(iscsi_url); | |
1399 | } | |
e829b0bb PL |
1400 | if (task != NULL) { |
1401 | scsi_free_scsi_task(task); | |
1402 | } | |
b93c94f7 PB |
1403 | |
1404 | if (ret) { | |
1405 | if (iscsi != NULL) { | |
1406 | iscsi_destroy_context(iscsi); | |
1407 | } | |
1408 | memset(iscsilun, 0, sizeof(IscsiLun)); | |
c589b249 | 1409 | } |
c589b249 RS |
1410 | return ret; |
1411 | } | |
1412 | ||
1413 | static void iscsi_close(BlockDriverState *bs) | |
1414 | { | |
1415 | IscsiLun *iscsilun = bs->opaque; | |
1416 | struct iscsi_context *iscsi = iscsilun->iscsi; | |
1417 | ||
5b5d34ec | 1418 | if (iscsilun->nop_timer) { |
bc72ad67 AB |
1419 | timer_del(iscsilun->nop_timer); |
1420 | timer_free(iscsilun->nop_timer); | |
5b5d34ec | 1421 | } |
f2e5dca4 | 1422 | qemu_aio_set_fd_handler(iscsi_get_fd(iscsi), NULL, NULL, NULL); |
c589b249 RS |
1423 | iscsi_destroy_context(iscsi); |
1424 | memset(iscsilun, 0, sizeof(IscsiLun)); | |
1425 | } | |
1426 | ||
cb1b83e7 PL |
1427 | static int iscsi_truncate(BlockDriverState *bs, int64_t offset) |
1428 | { | |
1429 | IscsiLun *iscsilun = bs->opaque; | |
1430 | int ret = 0; | |
1431 | ||
1432 | if (iscsilun->type != TYPE_DISK) { | |
1433 | return -ENOTSUP; | |
1434 | } | |
1435 | ||
1436 | if ((ret = iscsi_readcapacity_sync(iscsilun)) != 0) { | |
1437 | return ret; | |
1438 | } | |
1439 | ||
1440 | if (offset > iscsi_getlength(bs)) { | |
1441 | return -EINVAL; | |
1442 | } | |
1443 | ||
1444 | return 0; | |
1445 | } | |
1446 | ||
f807ecd5 PL |
1447 | static int iscsi_has_zero_init(BlockDriverState *bs) |
1448 | { | |
1449 | return 0; | |
1450 | } | |
1451 | ||
d5124c00 HR |
1452 | static int iscsi_create(const char *filename, QEMUOptionParameter *options, |
1453 | Error **errp) | |
de8864e5 PL |
1454 | { |
1455 | int ret = 0; | |
1456 | int64_t total_size = 0; | |
13c91cb7 | 1457 | BlockDriverState *bs; |
de8864e5 | 1458 | IscsiLun *iscsilun = NULL; |
60beb341 | 1459 | QDict *bs_options; |
de8864e5 | 1460 | |
13c91cb7 | 1461 | bs = bdrv_new(""); |
de8864e5 PL |
1462 | |
1463 | /* Read out options */ | |
1464 | while (options && options->name) { | |
1465 | if (!strcmp(options->name, "size")) { | |
1466 | total_size = options->value.n / BDRV_SECTOR_SIZE; | |
1467 | } | |
1468 | options++; | |
1469 | } | |
1470 | ||
13c91cb7 FZ |
1471 | bs->opaque = g_malloc0(sizeof(struct IscsiLun)); |
1472 | iscsilun = bs->opaque; | |
de8864e5 | 1473 | |
60beb341 KW |
1474 | bs_options = qdict_new(); |
1475 | qdict_put(bs_options, "filename", qstring_from_str(filename)); | |
015a1036 | 1476 | ret = iscsi_open(bs, bs_options, 0, NULL); |
60beb341 KW |
1477 | QDECREF(bs_options); |
1478 | ||
de8864e5 PL |
1479 | if (ret != 0) { |
1480 | goto out; | |
1481 | } | |
5b5d34ec | 1482 | if (iscsilun->nop_timer) { |
bc72ad67 AB |
1483 | timer_del(iscsilun->nop_timer); |
1484 | timer_free(iscsilun->nop_timer); | |
5b5d34ec | 1485 | } |
de8864e5 PL |
1486 | if (iscsilun->type != TYPE_DISK) { |
1487 | ret = -ENODEV; | |
1488 | goto out; | |
1489 | } | |
13c91cb7 | 1490 | if (bs->total_sectors < total_size) { |
de8864e5 | 1491 | ret = -ENOSPC; |
d3bda7bc | 1492 | goto out; |
de8864e5 PL |
1493 | } |
1494 | ||
1495 | ret = 0; | |
1496 | out: | |
1497 | if (iscsilun->iscsi != NULL) { | |
1498 | iscsi_destroy_context(iscsilun->iscsi); | |
1499 | } | |
13c91cb7 FZ |
1500 | g_free(bs->opaque); |
1501 | bs->opaque = NULL; | |
4f6fd349 | 1502 | bdrv_unref(bs); |
de8864e5 PL |
1503 | return ret; |
1504 | } | |
1505 | ||
186d4f2b PL |
1506 | static int iscsi_get_info(BlockDriverState *bs, BlockDriverInfo *bdi) |
1507 | { | |
1508 | IscsiLun *iscsilun = bs->opaque; | |
1509 | bdi->unallocated_blocks_are_zero = !!iscsilun->lbprz; | |
1510 | bdi->can_write_zeroes_with_unmap = iscsilun->lbprz && iscsilun->lbp.lbpws; | |
1511 | return 0; | |
1512 | } | |
1513 | ||
de8864e5 PL |
1514 | static QEMUOptionParameter iscsi_create_options[] = { |
1515 | { | |
1516 | .name = BLOCK_OPT_SIZE, | |
1517 | .type = OPT_SIZE, | |
1518 | .help = "Virtual disk size" | |
1519 | }, | |
1520 | { NULL } | |
1521 | }; | |
1522 | ||
c589b249 RS |
1523 | static BlockDriver bdrv_iscsi = { |
1524 | .format_name = "iscsi", | |
1525 | .protocol_name = "iscsi", | |
1526 | ||
1527 | .instance_size = sizeof(IscsiLun), | |
030be321 | 1528 | .bdrv_needs_filename = true, |
c589b249 RS |
1529 | .bdrv_file_open = iscsi_open, |
1530 | .bdrv_close = iscsi_close, | |
de8864e5 PL |
1531 | .bdrv_create = iscsi_create, |
1532 | .create_options = iscsi_create_options, | |
c589b249 RS |
1533 | |
1534 | .bdrv_getlength = iscsi_getlength, | |
186d4f2b | 1535 | .bdrv_get_info = iscsi_get_info, |
cb1b83e7 | 1536 | .bdrv_truncate = iscsi_truncate, |
c589b249 | 1537 | |
24c7608a | 1538 | #if defined(LIBISCSI_FEATURE_IOVECTOR) |
54a5c1d5 | 1539 | .bdrv_co_get_block_status = iscsi_co_get_block_status, |
f35c934a | 1540 | #endif |
65f3e339 | 1541 | .bdrv_co_discard = iscsi_co_discard, |
54a5c1d5 | 1542 | |
c589b249 RS |
1543 | .bdrv_aio_readv = iscsi_aio_readv, |
1544 | .bdrv_aio_writev = iscsi_aio_writev, | |
1545 | .bdrv_aio_flush = iscsi_aio_flush, | |
fa6acb0c | 1546 | |
f807ecd5 | 1547 | .bdrv_has_zero_init = iscsi_has_zero_init, |
98392453 RS |
1548 | |
1549 | #ifdef __linux__ | |
1550 | .bdrv_ioctl = iscsi_ioctl, | |
1551 | .bdrv_aio_ioctl = iscsi_aio_ioctl, | |
1552 | #endif | |
c589b249 RS |
1553 | }; |
1554 | ||
4d454574 PB |
1555 | static QemuOptsList qemu_iscsi_opts = { |
1556 | .name = "iscsi", | |
1557 | .head = QTAILQ_HEAD_INITIALIZER(qemu_iscsi_opts.head), | |
1558 | .desc = { | |
1559 | { | |
1560 | .name = "user", | |
1561 | .type = QEMU_OPT_STRING, | |
1562 | .help = "username for CHAP authentication to target", | |
1563 | },{ | |
1564 | .name = "password", | |
1565 | .type = QEMU_OPT_STRING, | |
1566 | .help = "password for CHAP authentication to target", | |
1567 | },{ | |
1568 | .name = "header-digest", | |
1569 | .type = QEMU_OPT_STRING, | |
1570 | .help = "HeaderDigest setting. " | |
1571 | "{CRC32C|CRC32C-NONE|NONE-CRC32C|NONE}", | |
1572 | },{ | |
1573 | .name = "initiator-name", | |
1574 | .type = QEMU_OPT_STRING, | |
1575 | .help = "Initiator iqn name to use when connecting", | |
1576 | }, | |
1577 | { /* end of list */ } | |
1578 | }, | |
1579 | }; | |
1580 | ||
c589b249 RS |
1581 | static void iscsi_block_init(void) |
1582 | { | |
1583 | bdrv_register(&bdrv_iscsi); | |
4d454574 | 1584 | qemu_add_opts(&qemu_iscsi_opts); |
c589b249 RS |
1585 | } |
1586 | ||
1587 | block_init(iscsi_block_init); |