1c589b249SRonnie Sahlberg /* 2c589b249SRonnie Sahlberg * QEMU Block driver for iSCSI images 3c589b249SRonnie Sahlberg * 4c589b249SRonnie Sahlberg * Copyright (c) 2010-2011 Ronnie Sahlberg <ronniesahlberg@gmail.com> 5aef172ffSPeter Lieven * Copyright (c) 2012-2017 Peter Lieven <pl@kamp.de> 6c589b249SRonnie Sahlberg * 7c589b249SRonnie Sahlberg * Permission is hereby granted, free of charge, to any person obtaining a copy 8c589b249SRonnie Sahlberg * of this software and associated documentation files (the "Software"), to deal 9c589b249SRonnie Sahlberg * in the Software without restriction, including without limitation the rights 10c589b249SRonnie Sahlberg * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 11c589b249SRonnie Sahlberg * copies of the Software, and to permit persons to whom the Software is 12c589b249SRonnie Sahlberg * furnished to do so, subject to the following conditions: 13c589b249SRonnie Sahlberg * 14c589b249SRonnie Sahlberg * The above copyright notice and this permission notice shall be included in 15c589b249SRonnie Sahlberg * all copies or substantial portions of the Software. 16c589b249SRonnie Sahlberg * 17c589b249SRonnie Sahlberg * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18c589b249SRonnie Sahlberg * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19c589b249SRonnie Sahlberg * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20c589b249SRonnie Sahlberg * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21c589b249SRonnie Sahlberg * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 22c589b249SRonnie Sahlberg * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 23c589b249SRonnie Sahlberg * THE SOFTWARE. 24c589b249SRonnie Sahlberg */ 25c589b249SRonnie Sahlberg 2680c71a24SPeter Maydell #include "qemu/osdep.h" 27c589b249SRonnie Sahlberg 28c589b249SRonnie Sahlberg #include <poll.h> 29efc6de0dSPeter Lieven #include <math.h> 30f4dfa67fSRonnie Sahlberg #include <arpa/inet.h> 311de7afc9SPaolo Bonzini #include "qemu/config-file.h" 321de7afc9SPaolo Bonzini #include "qemu/error-report.h" 33b03c3805SPeter Lieven #include "qemu/bitops.h" 34b03c3805SPeter Lieven #include "qemu/bitmap.h" 35737e150eSPaolo Bonzini #include "block/block_int.h" 36609f45eaSMax Reitz #include "block/qdict.h" 3708e2c9f1SPaolo Bonzini #include "scsi/constants.h" 380a53f010SRonnie Sahlberg #include "qemu/iov.h" 39922a01a0SMarkus Armbruster #include "qemu/option.h" 40cea25275SFam Zheng #include "qemu/uuid.h" 41e688df6bSMarkus Armbruster #include "qapi/error.h" 42112ed241SMarkus Armbruster #include "qapi/qapi-commands-misc.h" 43452fcdbcSMarkus Armbruster #include "qapi/qmp/qdict.h" 44d49b6836SMarkus Armbruster #include "qapi/qmp/qstring.h" 45b189346eSDaniel P. Berrange #include "crypto/secret.h" 46e5b5728cSPaolo Bonzini #include "scsi/utils.h" 47ecc983a5SFam Zheng #include "trace.h" 48c589b249SRonnie Sahlberg 49e5b5728cSPaolo Bonzini /* Conflict between scsi/utils.h and libiscsi! :( */ 50e5b5728cSPaolo Bonzini #define SCSI_XFER_NONE ISCSI_XFER_NONE 51c589b249SRonnie Sahlberg #include <iscsi/iscsi.h> 52c589b249SRonnie Sahlberg #include <iscsi/scsi-lowlevel.h> 53e5b5728cSPaolo Bonzini #undef SCSI_XFER_NONE 54e5b5728cSPaolo Bonzini QEMU_BUILD_BUG_ON((int)SCSI_XFER_NONE != (int)ISCSI_XFER_NONE); 55c589b249SRonnie Sahlberg 5698392453SRonnie Sahlberg #ifdef __linux__ 5798392453SRonnie Sahlberg #include <scsi/sg.h> 5898392453SRonnie Sahlberg #endif 59c589b249SRonnie Sahlberg 60c589b249SRonnie Sahlberg typedef struct IscsiLun { 61c589b249SRonnie Sahlberg struct iscsi_context *iscsi; 6280cf6257SStefan Hajnoczi AioContext *aio_context; 63c589b249SRonnie Sahlberg int lun; 64dbfff6d7SRonnie Sahlberg enum scsi_inquiry_peripheral_device_type type; 65c589b249SRonnie Sahlberg int block_size; 66c7b4a952SPaolo Bonzini uint64_t num_blocks; 67c9b9f682SRonnie Sahlberg int events; 685b5d34ecSPeter Lieven QEMUTimer *nop_timer; 6905b685fbSPeter Lieven QEMUTimer *event_timer; 70d045c466SPaolo Bonzini QemuMutex mutex; 71f18a7cbbSPeter Lieven struct scsi_inquiry_logical_block_provisioning lbp; 72f18a7cbbSPeter Lieven struct scsi_inquiry_block_limits bl; 73cc9743c2SFam Zheng struct scsi_inquiry_device_designator *dd; 74d4cd9615SPeter Lieven unsigned char *zeroblock; 75e1123a3bSPeter Lieven /* The allocmap tracks which clusters (pages) on the iSCSI target are 76e1123a3bSPeter Lieven * allocated and which are not. In case a target returns zeros for 77e1123a3bSPeter Lieven * unallocated pages (iscsilun->lprz) we can directly return zeros instead 78e1123a3bSPeter Lieven * of reading zeros over the wire if a read request falls within an 79e1123a3bSPeter Lieven * unallocated block. As there are 3 possible states we need 2 bitmaps to 80e1123a3bSPeter Lieven * track. allocmap_valid keeps track if QEMU's information about a page is 81e1123a3bSPeter Lieven * valid. allocmap tracks if a page is allocated or not. In case QEMU has no 82e1123a3bSPeter Lieven * valid information about a page the corresponding allocmap entry should be 83e1123a3bSPeter Lieven * switched to unallocated as well to force a new lookup of the allocation 84e1123a3bSPeter Lieven * status as lookups are generally skipped if a page is suspect to be 85e1123a3bSPeter Lieven * allocated. If a iSCSI target is opened with cache.direct = on the 86e1123a3bSPeter Lieven * allocmap_valid does not exist turning all cached information invalid so 87e1123a3bSPeter Lieven * that a fresh lookup is made for any page even if allocmap entry returns 88e1123a3bSPeter Lieven * it's unallocated. */ 89e1123a3bSPeter Lieven unsigned long *allocmap; 90e1123a3bSPeter Lieven unsigned long *allocmap_valid; 91e1123a3bSPeter Lieven long allocmap_size; 92ba059e7bSEric Blake int cluster_size; 939281fe9eSPeter Lieven bool use_16_for_rw; 9443ae8fb1SFam Zheng bool write_protected; 950a386e48SPeter Lieven bool lbpme; 960a386e48SPeter Lieven bool lbprz; 97752ce451SPeter Lieven bool dpofua; 980a386e48SPeter Lieven bool has_write_same; 995dd7a535SPeter Lieven bool request_timed_out; 100c589b249SRonnie Sahlberg } IscsiLun; 101c589b249SRonnie Sahlberg 10254a5c1d5SPeter Lieven typedef struct IscsiTask { 10354a5c1d5SPeter Lieven int status; 10454a5c1d5SPeter Lieven int complete; 10554a5c1d5SPeter Lieven int retries; 10654a5c1d5SPeter Lieven int do_retry; 10754a5c1d5SPeter Lieven struct scsi_task *task; 10854a5c1d5SPeter Lieven Coroutine *co; 10980cf6257SStefan Hajnoczi IscsiLun *iscsilun; 110efc6de0dSPeter Lieven QEMUTimer retry_timer; 111e01dd3daSFam Zheng int err_code; 112e38bc234SPeter Lieven char *err_str; 11354a5c1d5SPeter Lieven } IscsiTask; 11454a5c1d5SPeter Lieven 115c589b249SRonnie Sahlberg typedef struct IscsiAIOCB { 1167c84b1b8SMarkus Armbruster BlockAIOCB common; 117c589b249SRonnie Sahlberg QEMUBH *bh; 118c589b249SRonnie Sahlberg IscsiLun *iscsilun; 119c589b249SRonnie Sahlberg struct scsi_task *task; 120c589b249SRonnie Sahlberg int status; 1211dde716eSPeter Lieven int64_t sector_num; 1221dde716eSPeter Lieven int nb_sectors; 1234bb17ab5SFam Zheng int ret; 12498392453SRonnie Sahlberg #ifdef __linux__ 12598392453SRonnie Sahlberg sg_io_hdr_t *ioh; 12698392453SRonnie Sahlberg #endif 127c1004487SStefan Hajnoczi bool cancelled; 128c589b249SRonnie Sahlberg } IscsiAIOCB; 129c589b249SRonnie Sahlberg 1305dd7a535SPeter Lieven /* libiscsi uses time_t so its enough to process events every second */ 1315dd7a535SPeter Lieven #define EVENT_INTERVAL 1000 1325b5d34ecSPeter Lieven #define NOP_INTERVAL 5000 1335b5d34ecSPeter Lieven #define MAX_NOP_FAILURES 3 134efc6de0dSPeter Lieven #define ISCSI_CMD_RETRIES ARRAY_SIZE(iscsi_retry_times) 13559dd0a22SPeter Lieven static const unsigned iscsi_retry_times[] = {8, 32, 128, 512, 2048, 8192, 32768}; 1365b5d34ecSPeter Lieven 1375d831be2SStefan Weil /* this threshold is a trade-off knob to choose between 1385917af81SPeter Lieven * the potential additional overhead of an extra GET_LBA_STATUS request 1395917af81SPeter Lieven * vs. unnecessarily reading a lot of zero sectors over the wire. 1405917af81SPeter Lieven * If a read request is greater or equal than ISCSI_CHECKALLOC_THRES 1415917af81SPeter Lieven * sectors we check the allocation status of the area covered by the 1425917af81SPeter Lieven * request first if the allocationmap indicates that the area might be 1435917af81SPeter Lieven * unallocated. */ 1445917af81SPeter Lieven #define ISCSI_CHECKALLOC_THRES 64 145c589b249SRonnie Sahlberg 146c589b249SRonnie Sahlberg static void 147cfb3f506SPaolo Bonzini iscsi_bh_cb(void *p) 14827cbd828SPaolo Bonzini { 14927cbd828SPaolo Bonzini IscsiAIOCB *acb = p; 15027cbd828SPaolo Bonzini 15127cbd828SPaolo Bonzini qemu_bh_delete(acb->bh); 15227cbd828SPaolo Bonzini 15327cbd828SPaolo Bonzini acb->common.cb(acb->common.opaque, acb->status); 15427cbd828SPaolo Bonzini 1551bd075f2SPaolo Bonzini if (acb->task != NULL) { 1561bd075f2SPaolo Bonzini scsi_free_scsi_task(acb->task); 1571bd075f2SPaolo Bonzini acb->task = NULL; 1581bd075f2SPaolo Bonzini } 1591bd075f2SPaolo Bonzini 1608007429aSFam Zheng qemu_aio_unref(acb); 16127cbd828SPaolo Bonzini } 16227cbd828SPaolo Bonzini 163cfb3f506SPaolo Bonzini static void 164cfb3f506SPaolo Bonzini iscsi_schedule_bh(IscsiAIOCB *acb) 16527cbd828SPaolo Bonzini { 1661bd075f2SPaolo Bonzini if (acb->bh) { 1671bd075f2SPaolo Bonzini return; 1681bd075f2SPaolo Bonzini } 16980cf6257SStefan Hajnoczi acb->bh = aio_bh_new(acb->iscsilun->aio_context, iscsi_bh_cb, acb); 17027cbd828SPaolo Bonzini qemu_bh_schedule(acb->bh); 17127cbd828SPaolo Bonzini } 17227cbd828SPaolo Bonzini 1738b9dfe90SPeter Lieven static void iscsi_co_generic_bh_cb(void *opaque) 1748b9dfe90SPeter Lieven { 1758b9dfe90SPeter Lieven struct IscsiTask *iTask = opaque; 1761919631eSPaolo Bonzini 177fcd470d8SPeter Lieven iTask->complete = 1; 1781919631eSPaolo Bonzini aio_co_wake(iTask->co); 1798b9dfe90SPeter Lieven } 1808b9dfe90SPeter Lieven 181efc6de0dSPeter Lieven static void iscsi_retry_timer_expired(void *opaque) 182efc6de0dSPeter Lieven { 183efc6de0dSPeter Lieven struct IscsiTask *iTask = opaque; 184fcd470d8SPeter Lieven iTask->complete = 1; 185efc6de0dSPeter Lieven if (iTask->co) { 1862f47da5fSPaolo Bonzini aio_co_wake(iTask->co); 187efc6de0dSPeter Lieven } 188efc6de0dSPeter Lieven } 189efc6de0dSPeter Lieven 190efc6de0dSPeter Lieven static inline unsigned exp_random(double mean) 191efc6de0dSPeter Lieven { 192efc6de0dSPeter Lieven return -mean * log((double)rand() / RAND_MAX); 193efc6de0dSPeter Lieven } 194efc6de0dSPeter Lieven 195e01dd3daSFam Zheng /* SCSI_SENSE_ASCQ_INVALID_FIELD_IN_PARAMETER_LIST was introduced in 196e01dd3daSFam Zheng * libiscsi 1.10.0, together with other constants we need. Use it as 197e01dd3daSFam Zheng * a hint that we have to define them ourselves if needed, to keep the 198e01dd3daSFam Zheng * minimum required libiscsi version at 1.9.0. We use an ASCQ macro for 199e01dd3daSFam Zheng * the test because SCSI_STATUS_* is an enum. 200e01dd3daSFam Zheng * 201e01dd3daSFam Zheng * To guard against future changes where SCSI_SENSE_ASCQ_* also becomes 202e01dd3daSFam Zheng * an enum, check against the LIBISCSI_API_VERSION macro, which was 203e01dd3daSFam Zheng * introduced in 1.11.0. If it is present, there is no need to define 204e01dd3daSFam Zheng * anything. 205e01dd3daSFam Zheng */ 206e01dd3daSFam Zheng #if !defined(SCSI_SENSE_ASCQ_INVALID_FIELD_IN_PARAMETER_LIST) && \ 207e01dd3daSFam Zheng !defined(LIBISCSI_API_VERSION) 208e01dd3daSFam Zheng #define SCSI_STATUS_TASK_SET_FULL 0x28 209e01dd3daSFam Zheng #define SCSI_STATUS_TIMEOUT 0x0f000002 210e01dd3daSFam Zheng #define SCSI_SENSE_ASCQ_INVALID_FIELD_IN_PARAMETER_LIST 0x2600 211e01dd3daSFam Zheng #define SCSI_SENSE_ASCQ_PARAMETER_LIST_LENGTH_ERROR 0x1a00 2129049736eSPeter Lieven #endif 2139049736eSPeter Lieven 214583ec22eSRoy Shterman #ifndef LIBISCSI_API_VERSION 215583ec22eSRoy Shterman #define LIBISCSI_API_VERSION 20130701 216583ec22eSRoy Shterman #endif 217583ec22eSRoy Shterman 218e01dd3daSFam Zheng static int iscsi_translate_sense(struct scsi_sense *sense) 219e01dd3daSFam Zheng { 22028751358SFam Zheng return - scsi_sense_to_errno(sense->key, 22128751358SFam Zheng (sense->ascq & 0xFF00) >> 8, 22228751358SFam Zheng sense->ascq & 0xFF); 223e01dd3daSFam Zheng } 224e01dd3daSFam Zheng 225d045c466SPaolo Bonzini /* Called (via iscsi_service) with QemuMutex held. */ 22654a5c1d5SPeter Lieven static void 22754a5c1d5SPeter Lieven iscsi_co_generic_cb(struct iscsi_context *iscsi, int status, 22854a5c1d5SPeter Lieven void *command_data, void *opaque) 22954a5c1d5SPeter Lieven { 23054a5c1d5SPeter Lieven struct IscsiTask *iTask = opaque; 23154a5c1d5SPeter Lieven struct scsi_task *task = command_data; 23254a5c1d5SPeter Lieven 23354a5c1d5SPeter Lieven iTask->status = status; 23454a5c1d5SPeter Lieven iTask->do_retry = 0; 23554a5c1d5SPeter Lieven iTask->task = task; 23654a5c1d5SPeter Lieven 237efc6de0dSPeter Lieven if (status != SCSI_STATUS_GOOD) { 238efc6de0dSPeter Lieven if (iTask->retries++ < ISCSI_CMD_RETRIES) { 239efc6de0dSPeter Lieven if (status == SCSI_STATUS_CHECK_CONDITION 24054a5c1d5SPeter Lieven && task->sense.key == SCSI_SENSE_UNIT_ATTENTION) { 241efc6de0dSPeter Lieven error_report("iSCSI CheckCondition: %s", 242efc6de0dSPeter Lieven iscsi_get_error(iscsi)); 24354a5c1d5SPeter Lieven iTask->do_retry = 1; 24454a5c1d5SPeter Lieven goto out; 24554a5c1d5SPeter Lieven } 2469049736eSPeter Lieven if (status == SCSI_STATUS_BUSY || 247e01dd3daSFam Zheng status == SCSI_STATUS_TIMEOUT || 248e01dd3daSFam Zheng status == SCSI_STATUS_TASK_SET_FULL) { 249efc6de0dSPeter Lieven unsigned retry_time = 250efc6de0dSPeter Lieven exp_random(iscsi_retry_times[iTask->retries - 1]); 251e01dd3daSFam Zheng if (status == SCSI_STATUS_TIMEOUT) { 2525dd7a535SPeter Lieven /* make sure the request is rescheduled AFTER the 2535dd7a535SPeter Lieven * reconnect is initiated */ 2545dd7a535SPeter Lieven retry_time = EVENT_INTERVAL * 2; 2555dd7a535SPeter Lieven iTask->iscsilun->request_timed_out = true; 2565dd7a535SPeter Lieven } 2575dd7a535SPeter Lieven error_report("iSCSI Busy/TaskSetFull/TimeOut" 2585dd7a535SPeter Lieven " (retry #%u in %u ms): %s", 259efc6de0dSPeter Lieven iTask->retries, retry_time, 260efc6de0dSPeter Lieven iscsi_get_error(iscsi)); 261efc6de0dSPeter Lieven aio_timer_init(iTask->iscsilun->aio_context, 262efc6de0dSPeter Lieven &iTask->retry_timer, QEMU_CLOCK_REALTIME, 263efc6de0dSPeter Lieven SCALE_MS, iscsi_retry_timer_expired, iTask); 264efc6de0dSPeter Lieven timer_mod(&iTask->retry_timer, 265efc6de0dSPeter Lieven qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + retry_time); 266efc6de0dSPeter Lieven iTask->do_retry = 1; 267efc6de0dSPeter Lieven return; 268efc6de0dSPeter Lieven } 269efc6de0dSPeter Lieven } 270e01dd3daSFam Zheng iTask->err_code = iscsi_translate_sense(&task->sense); 271e38bc234SPeter Lieven iTask->err_str = g_strdup(iscsi_get_error(iscsi)); 27254a5c1d5SPeter Lieven } 27354a5c1d5SPeter Lieven 27454a5c1d5SPeter Lieven out: 27554a5c1d5SPeter Lieven if (iTask->co) { 276fffb6e12SPaolo Bonzini aio_bh_schedule_oneshot(iTask->iscsilun->aio_context, 27780cf6257SStefan Hajnoczi iscsi_co_generic_bh_cb, iTask); 278fcd470d8SPeter Lieven } else { 279fcd470d8SPeter Lieven iTask->complete = 1; 28054a5c1d5SPeter Lieven } 28154a5c1d5SPeter Lieven } 28254a5c1d5SPeter Lieven 28354a5c1d5SPeter Lieven static void iscsi_co_init_iscsitask(IscsiLun *iscsilun, struct IscsiTask *iTask) 28454a5c1d5SPeter Lieven { 28554a5c1d5SPeter Lieven *iTask = (struct IscsiTask) { 28654a5c1d5SPeter Lieven .co = qemu_coroutine_self(), 28780cf6257SStefan Hajnoczi .iscsilun = iscsilun, 28854a5c1d5SPeter Lieven }; 28954a5c1d5SPeter Lieven } 29027cbd828SPaolo Bonzini 291c1004487SStefan Hajnoczi /* Called (via iscsi_service) with QemuMutex held. */ 29227cbd828SPaolo Bonzini static void 293c589b249SRonnie Sahlberg iscsi_abort_task_cb(struct iscsi_context *iscsi, int status, void *command_data, 294c589b249SRonnie Sahlberg void *private_data) 295c589b249SRonnie Sahlberg { 2961bd075f2SPaolo Bonzini IscsiAIOCB *acb = private_data; 2971bd075f2SPaolo Bonzini 298*88e94fd2SStefan Hajnoczi /* If the command callback hasn't been called yet, drop the task */ 299*88e94fd2SStefan Hajnoczi if (!acb->bh) { 300*88e94fd2SStefan Hajnoczi /* Call iscsi_aio_ioctl_cb() with SCSI_STATUS_CANCELLED */ 301*88e94fd2SStefan Hajnoczi iscsi_scsi_cancel_task(iscsi, acb->task); 302*88e94fd2SStefan Hajnoczi } 303*88e94fd2SStefan Hajnoczi 304c1004487SStefan Hajnoczi qemu_aio_unref(acb); /* acquired in iscsi_aio_cancel() */ 305c589b249SRonnie Sahlberg } 306c589b249SRonnie Sahlberg 307c589b249SRonnie Sahlberg static void 3087c84b1b8SMarkus Armbruster iscsi_aio_cancel(BlockAIOCB *blockacb) 309c589b249SRonnie Sahlberg { 310c589b249SRonnie Sahlberg IscsiAIOCB *acb = (IscsiAIOCB *)blockacb; 311c589b249SRonnie Sahlberg IscsiLun *iscsilun = acb->iscsilun; 312c589b249SRonnie Sahlberg 313c1004487SStefan Hajnoczi qemu_mutex_lock(&iscsilun->mutex); 314c1004487SStefan Hajnoczi 315c1004487SStefan Hajnoczi /* If it was cancelled or completed already, our work is done here */ 316c1004487SStefan Hajnoczi if (acb->cancelled || acb->status != -EINPROGRESS) { 317c1004487SStefan Hajnoczi qemu_mutex_unlock(&iscsilun->mutex); 3181bd075f2SPaolo Bonzini return; 3191bd075f2SPaolo Bonzini } 3201bd075f2SPaolo Bonzini 321c1004487SStefan Hajnoczi acb->cancelled = true; 322b2090919SPaolo Bonzini 323c1004487SStefan Hajnoczi qemu_aio_ref(acb); /* released in iscsi_abort_task_cb() */ 324c1004487SStefan Hajnoczi 325c1004487SStefan Hajnoczi /* send a task mgmt call to the target to cancel the task on the target */ 326c1004487SStefan Hajnoczi if (iscsi_task_mgmt_abort_task_async(iscsilun->iscsi, acb->task, 327c1004487SStefan Hajnoczi iscsi_abort_task_cb, acb) < 0) { 328c1004487SStefan Hajnoczi qemu_aio_unref(acb); /* since iscsi_abort_task_cb() won't be called */ 329c1004487SStefan Hajnoczi } 330c1004487SStefan Hajnoczi 331c1004487SStefan Hajnoczi qemu_mutex_unlock(&iscsilun->mutex); 332c589b249SRonnie Sahlberg } 333c589b249SRonnie Sahlberg 334d7331bedSStefan Hajnoczi static const AIOCBInfo iscsi_aiocb_info = { 335c589b249SRonnie Sahlberg .aiocb_size = sizeof(IscsiAIOCB), 336722d9333SFam Zheng .cancel_async = iscsi_aio_cancel, 337c589b249SRonnie Sahlberg }; 338c589b249SRonnie Sahlberg 339c589b249SRonnie Sahlberg 340c589b249SRonnie Sahlberg static void iscsi_process_read(void *arg); 341c589b249SRonnie Sahlberg static void iscsi_process_write(void *arg); 342c589b249SRonnie Sahlberg 343d045c466SPaolo Bonzini /* Called with QemuMutex held. */ 344c589b249SRonnie Sahlberg static void 345c589b249SRonnie Sahlberg iscsi_set_events(IscsiLun *iscsilun) 346c589b249SRonnie Sahlberg { 347c589b249SRonnie Sahlberg struct iscsi_context *iscsi = iscsilun->iscsi; 34805b685fbSPeter Lieven int ev = iscsi_which_events(iscsi); 349c589b249SRonnie Sahlberg 350c9b9f682SRonnie Sahlberg if (ev != iscsilun->events) { 351dca21ef2SFam Zheng aio_set_fd_handler(iscsilun->aio_context, iscsi_get_fd(iscsi), 352dca21ef2SFam Zheng false, 35305b685fbSPeter Lieven (ev & POLLIN) ? iscsi_process_read : NULL, 354c9b9f682SRonnie Sahlberg (ev & POLLOUT) ? iscsi_process_write : NULL, 355f6a51c84SStefan Hajnoczi NULL, 356c9b9f682SRonnie Sahlberg iscsilun); 35705b685fbSPeter Lieven iscsilun->events = ev; 358c9b9f682SRonnie Sahlberg } 35905b685fbSPeter Lieven } 36005b685fbSPeter Lieven 3615dd7a535SPeter Lieven static void iscsi_timed_check_events(void *opaque) 36205b685fbSPeter Lieven { 36305b685fbSPeter Lieven IscsiLun *iscsilun = opaque; 3645dd7a535SPeter Lieven 36583d11973SStefan Hajnoczi qemu_mutex_lock(&iscsilun->mutex); 36683d11973SStefan Hajnoczi 3675dd7a535SPeter Lieven /* check for timed out requests */ 3685dd7a535SPeter Lieven iscsi_service(iscsilun->iscsi, 0); 3695dd7a535SPeter Lieven 3705dd7a535SPeter Lieven if (iscsilun->request_timed_out) { 3715dd7a535SPeter Lieven iscsilun->request_timed_out = false; 3725dd7a535SPeter Lieven iscsi_reconnect(iscsilun->iscsi); 3735dd7a535SPeter Lieven } 3745dd7a535SPeter Lieven 3755dd7a535SPeter Lieven /* newer versions of libiscsi may return zero events. Ensure we are able 3765dd7a535SPeter Lieven * to return to service once this situation changes. */ 37705b685fbSPeter Lieven iscsi_set_events(iscsilun); 3785dd7a535SPeter Lieven 37983d11973SStefan Hajnoczi qemu_mutex_unlock(&iscsilun->mutex); 38083d11973SStefan Hajnoczi 3815dd7a535SPeter Lieven timer_mod(iscsilun->event_timer, 3825dd7a535SPeter Lieven qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + EVENT_INTERVAL); 383c589b249SRonnie Sahlberg } 384c589b249SRonnie Sahlberg 385c589b249SRonnie Sahlberg static void 386c589b249SRonnie Sahlberg iscsi_process_read(void *arg) 387c589b249SRonnie Sahlberg { 388c589b249SRonnie Sahlberg IscsiLun *iscsilun = arg; 389c589b249SRonnie Sahlberg struct iscsi_context *iscsi = iscsilun->iscsi; 390c589b249SRonnie Sahlberg 391d045c466SPaolo Bonzini qemu_mutex_lock(&iscsilun->mutex); 392c589b249SRonnie Sahlberg iscsi_service(iscsi, POLLIN); 393c589b249SRonnie Sahlberg iscsi_set_events(iscsilun); 394d045c466SPaolo Bonzini qemu_mutex_unlock(&iscsilun->mutex); 395c589b249SRonnie Sahlberg } 396c589b249SRonnie Sahlberg 397c589b249SRonnie Sahlberg static void 398c589b249SRonnie Sahlberg iscsi_process_write(void *arg) 399c589b249SRonnie Sahlberg { 400c589b249SRonnie Sahlberg IscsiLun *iscsilun = arg; 401c589b249SRonnie Sahlberg struct iscsi_context *iscsi = iscsilun->iscsi; 402c589b249SRonnie Sahlberg 403d045c466SPaolo Bonzini qemu_mutex_lock(&iscsilun->mutex); 404c589b249SRonnie Sahlberg iscsi_service(iscsi, POLLOUT); 405c589b249SRonnie Sahlberg iscsi_set_events(iscsilun); 406d045c466SPaolo Bonzini qemu_mutex_unlock(&iscsilun->mutex); 407c589b249SRonnie Sahlberg } 408c589b249SRonnie Sahlberg 4090777b5ddSPeter Lieven static int64_t sector_lun2qemu(int64_t sector, IscsiLun *iscsilun) 4100777b5ddSPeter Lieven { 4110777b5ddSPeter Lieven return sector * iscsilun->block_size / BDRV_SECTOR_SIZE; 4120777b5ddSPeter Lieven } 4130777b5ddSPeter Lieven 414c589b249SRonnie Sahlberg static int64_t sector_qemu2lun(int64_t sector, IscsiLun *iscsilun) 415c589b249SRonnie Sahlberg { 416c589b249SRonnie Sahlberg return sector * BDRV_SECTOR_SIZE / iscsilun->block_size; 417c589b249SRonnie Sahlberg } 418c589b249SRonnie Sahlberg 41994d047a3SEric Blake static bool is_byte_request_lun_aligned(int64_t offset, int count, 42091bea4e2SPeter Lieven IscsiLun *iscsilun) 42191bea4e2SPeter Lieven { 42294d047a3SEric Blake if (offset % iscsilun->block_size || count % iscsilun->block_size) { 423f5075224SRichard W.M. Jones error_report("iSCSI misaligned request: " 42494d047a3SEric Blake "iscsilun->block_size %u, offset %" PRIi64 42594d047a3SEric Blake ", count %d", 42694d047a3SEric Blake iscsilun->block_size, offset, count); 42794d047a3SEric Blake return false; 42891bea4e2SPeter Lieven } 42994d047a3SEric Blake return true; 43094d047a3SEric Blake } 43194d047a3SEric Blake 43294d047a3SEric Blake static bool is_sector_request_lun_aligned(int64_t sector_num, int nb_sectors, 43394d047a3SEric Blake IscsiLun *iscsilun) 43494d047a3SEric Blake { 4350ead9312SPeter Lieven assert(nb_sectors <= BDRV_REQUEST_MAX_SECTORS); 43694d047a3SEric Blake return is_byte_request_lun_aligned(sector_num << BDRV_SECTOR_BITS, 43794d047a3SEric Blake nb_sectors << BDRV_SECTOR_BITS, 43894d047a3SEric Blake iscsilun); 43991bea4e2SPeter Lieven } 44091bea4e2SPeter Lieven 441e1123a3bSPeter Lieven static void iscsi_allocmap_free(IscsiLun *iscsilun) 442a9fe4c95SPeter Lieven { 443e1123a3bSPeter Lieven g_free(iscsilun->allocmap); 444e1123a3bSPeter Lieven g_free(iscsilun->allocmap_valid); 445e1123a3bSPeter Lieven iscsilun->allocmap = NULL; 446e1123a3bSPeter Lieven iscsilun->allocmap_valid = NULL; 447a9fe4c95SPeter Lieven } 448a9fe4c95SPeter Lieven 449e1123a3bSPeter Lieven 450e1123a3bSPeter Lieven static int iscsi_allocmap_init(IscsiLun *iscsilun, int open_flags) 451b03c3805SPeter Lieven { 452e1123a3bSPeter Lieven iscsi_allocmap_free(iscsilun); 453e1123a3bSPeter Lieven 454ba059e7bSEric Blake assert(iscsilun->cluster_size); 455e1123a3bSPeter Lieven iscsilun->allocmap_size = 456ba059e7bSEric Blake DIV_ROUND_UP(iscsilun->num_blocks * iscsilun->block_size, 457ba059e7bSEric Blake iscsilun->cluster_size); 458e1123a3bSPeter Lieven 459e1123a3bSPeter Lieven iscsilun->allocmap = bitmap_try_new(iscsilun->allocmap_size); 460e1123a3bSPeter Lieven if (!iscsilun->allocmap) { 461e1123a3bSPeter Lieven return -ENOMEM; 462b03c3805SPeter Lieven } 463b03c3805SPeter Lieven 464e1123a3bSPeter Lieven if (open_flags & BDRV_O_NOCACHE) { 465ba059e7bSEric Blake /* when cache.direct = on all allocmap entries are 466e1123a3bSPeter Lieven * treated as invalid to force a relookup of the block 467e1123a3bSPeter Lieven * status on every read request */ 468e1123a3bSPeter Lieven return 0; 469e1123a3bSPeter Lieven } 470e1123a3bSPeter Lieven 471e1123a3bSPeter Lieven iscsilun->allocmap_valid = bitmap_try_new(iscsilun->allocmap_size); 472e1123a3bSPeter Lieven if (!iscsilun->allocmap_valid) { 473e1123a3bSPeter Lieven /* if we are under memory pressure free the allocmap as well */ 474e1123a3bSPeter Lieven iscsi_allocmap_free(iscsilun); 475e1123a3bSPeter Lieven return -ENOMEM; 476e1123a3bSPeter Lieven } 477e1123a3bSPeter Lieven 478e1123a3bSPeter Lieven return 0; 479e1123a3bSPeter Lieven } 480e1123a3bSPeter Lieven 481e1123a3bSPeter Lieven static void 48204a408fbSEric Blake iscsi_allocmap_update(IscsiLun *iscsilun, int64_t offset, 48304a408fbSEric Blake int64_t bytes, bool allocated, bool valid) 484b03c3805SPeter Lieven { 485e1123a3bSPeter Lieven int64_t cl_num_expanded, nb_cls_expanded, cl_num_shrunk, nb_cls_shrunk; 486e1123a3bSPeter Lieven 487e1123a3bSPeter Lieven if (iscsilun->allocmap == NULL) { 488b03c3805SPeter Lieven return; 489b03c3805SPeter Lieven } 490e1123a3bSPeter Lieven /* expand to entirely contain all affected clusters */ 49104a408fbSEric Blake assert(iscsilun->cluster_size); 49204a408fbSEric Blake cl_num_expanded = offset / iscsilun->cluster_size; 49304a408fbSEric Blake nb_cls_expanded = DIV_ROUND_UP(offset + bytes, 49404a408fbSEric Blake iscsilun->cluster_size) - cl_num_expanded; 495e1123a3bSPeter Lieven /* shrink to touch only completely contained clusters */ 49604a408fbSEric Blake cl_num_shrunk = DIV_ROUND_UP(offset, iscsilun->cluster_size); 49704a408fbSEric Blake nb_cls_shrunk = (offset + bytes) / iscsilun->cluster_size - cl_num_shrunk; 498e1123a3bSPeter Lieven if (allocated) { 499e1123a3bSPeter Lieven bitmap_set(iscsilun->allocmap, cl_num_expanded, nb_cls_expanded); 500e1123a3bSPeter Lieven } else { 5011da45e0cSPeter Lieven if (nb_cls_shrunk > 0) { 502e1123a3bSPeter Lieven bitmap_clear(iscsilun->allocmap, cl_num_shrunk, nb_cls_shrunk); 503b03c3805SPeter Lieven } 5041da45e0cSPeter Lieven } 505e1123a3bSPeter Lieven 506e1123a3bSPeter Lieven if (iscsilun->allocmap_valid == NULL) { 507e1123a3bSPeter Lieven return; 508e1123a3bSPeter Lieven } 509e1123a3bSPeter Lieven if (valid) { 5101da45e0cSPeter Lieven if (nb_cls_shrunk > 0) { 511e1123a3bSPeter Lieven bitmap_set(iscsilun->allocmap_valid, cl_num_shrunk, nb_cls_shrunk); 5121da45e0cSPeter Lieven } 513e1123a3bSPeter Lieven } else { 514e1123a3bSPeter Lieven bitmap_clear(iscsilun->allocmap_valid, cl_num_expanded, 515e1123a3bSPeter Lieven nb_cls_expanded); 516e1123a3bSPeter Lieven } 517e1123a3bSPeter Lieven } 518e1123a3bSPeter Lieven 519e1123a3bSPeter Lieven static void 52004a408fbSEric Blake iscsi_allocmap_set_allocated(IscsiLun *iscsilun, int64_t offset, 52104a408fbSEric Blake int64_t bytes) 522e1123a3bSPeter Lieven { 52304a408fbSEric Blake iscsi_allocmap_update(iscsilun, offset, bytes, true, true); 524e1123a3bSPeter Lieven } 525e1123a3bSPeter Lieven 526e1123a3bSPeter Lieven static void 52704a408fbSEric Blake iscsi_allocmap_set_unallocated(IscsiLun *iscsilun, int64_t offset, 52804a408fbSEric Blake int64_t bytes) 529e1123a3bSPeter Lieven { 530e1123a3bSPeter Lieven /* Note: if cache.direct=on the fifth argument to iscsi_allocmap_update 531e1123a3bSPeter Lieven * is ignored, so this will in effect be an iscsi_allocmap_set_invalid. 532e1123a3bSPeter Lieven */ 53304a408fbSEric Blake iscsi_allocmap_update(iscsilun, offset, bytes, false, true); 534e1123a3bSPeter Lieven } 535e1123a3bSPeter Lieven 53604a408fbSEric Blake static void iscsi_allocmap_set_invalid(IscsiLun *iscsilun, int64_t offset, 53704a408fbSEric Blake int64_t bytes) 538e1123a3bSPeter Lieven { 53904a408fbSEric Blake iscsi_allocmap_update(iscsilun, offset, bytes, false, false); 540e1123a3bSPeter Lieven } 541e1123a3bSPeter Lieven 542e1123a3bSPeter Lieven static void iscsi_allocmap_invalidate(IscsiLun *iscsilun) 543e1123a3bSPeter Lieven { 544e1123a3bSPeter Lieven if (iscsilun->allocmap) { 545e1123a3bSPeter Lieven bitmap_zero(iscsilun->allocmap, iscsilun->allocmap_size); 546e1123a3bSPeter Lieven } 547e1123a3bSPeter Lieven if (iscsilun->allocmap_valid) { 548e1123a3bSPeter Lieven bitmap_zero(iscsilun->allocmap_valid, iscsilun->allocmap_size); 549e1123a3bSPeter Lieven } 550e1123a3bSPeter Lieven } 551e1123a3bSPeter Lieven 552e1123a3bSPeter Lieven static inline bool 55304a408fbSEric Blake iscsi_allocmap_is_allocated(IscsiLun *iscsilun, int64_t offset, 55404a408fbSEric Blake int64_t bytes) 555e1123a3bSPeter Lieven { 556e1123a3bSPeter Lieven unsigned long size; 557e1123a3bSPeter Lieven if (iscsilun->allocmap == NULL) { 558e1123a3bSPeter Lieven return true; 559e1123a3bSPeter Lieven } 560ba059e7bSEric Blake assert(iscsilun->cluster_size); 56104a408fbSEric Blake size = DIV_ROUND_UP(offset + bytes, iscsilun->cluster_size); 562e1123a3bSPeter Lieven return !(find_next_bit(iscsilun->allocmap, size, 56304a408fbSEric Blake offset / iscsilun->cluster_size) == size); 564e1123a3bSPeter Lieven } 565e1123a3bSPeter Lieven 566e1123a3bSPeter Lieven static inline bool iscsi_allocmap_is_valid(IscsiLun *iscsilun, 56704a408fbSEric Blake int64_t offset, int64_t bytes) 568e1123a3bSPeter Lieven { 569e1123a3bSPeter Lieven unsigned long size; 570e1123a3bSPeter Lieven if (iscsilun->allocmap_valid == NULL) { 571e1123a3bSPeter Lieven return false; 572e1123a3bSPeter Lieven } 573ba059e7bSEric Blake assert(iscsilun->cluster_size); 57404a408fbSEric Blake size = DIV_ROUND_UP(offset + bytes, iscsilun->cluster_size); 575e1123a3bSPeter Lieven return (find_next_zero_bit(iscsilun->allocmap_valid, size, 57604a408fbSEric Blake offset / iscsilun->cluster_size) == size); 577b03c3805SPeter Lieven } 578b03c3805SPeter Lieven 57966e75c03SFam Zheng static void coroutine_fn iscsi_co_wait_for_task(IscsiTask *iTask, 58066e75c03SFam Zheng IscsiLun *iscsilun) 58166e75c03SFam Zheng { 58266e75c03SFam Zheng while (!iTask->complete) { 58366e75c03SFam Zheng iscsi_set_events(iscsilun); 58466e75c03SFam Zheng qemu_mutex_unlock(&iscsilun->mutex); 58566e75c03SFam Zheng qemu_coroutine_yield(); 58666e75c03SFam Zheng qemu_mutex_lock(&iscsilun->mutex); 58766e75c03SFam Zheng } 58866e75c03SFam Zheng } 58966e75c03SFam Zheng 5909f0eb9e1SKevin Wolf static int coroutine_fn 591e18a58b4SEric Blake iscsi_co_writev(BlockDriverState *bs, int64_t sector_num, int nb_sectors, 5929f0eb9e1SKevin Wolf QEMUIOVector *iov, int flags) 593c589b249SRonnie Sahlberg { 594063c3378SPeter Lieven IscsiLun *iscsilun = bs->opaque; 595063c3378SPeter Lieven struct IscsiTask iTask; 596f4dfa67fSRonnie Sahlberg uint64_t lba; 597063c3378SPeter Lieven uint32_t num_sectors; 5984df863f3SEric Blake bool fua = flags & BDRV_REQ_FUA; 599d045c466SPaolo Bonzini int r = 0; 600063c3378SPeter Lieven 6014df863f3SEric Blake if (fua) { 6024df863f3SEric Blake assert(iscsilun->dpofua); 6034df863f3SEric Blake } 60494d047a3SEric Blake if (!is_sector_request_lun_aligned(sector_num, nb_sectors, iscsilun)) { 605063c3378SPeter Lieven return -EINVAL; 606063c3378SPeter Lieven } 607063c3378SPeter Lieven 6086bd01f14SEric Blake if (bs->bl.max_transfer) { 6096bd01f14SEric Blake assert(nb_sectors << BDRV_SECTOR_BITS <= bs->bl.max_transfer); 610dc9e7163SPeter Lieven } 611dc9e7163SPeter Lieven 612063c3378SPeter Lieven lba = sector_qemu2lun(sector_num, iscsilun); 613063c3378SPeter Lieven num_sectors = sector_qemu2lun(nb_sectors, iscsilun); 614063c3378SPeter Lieven iscsi_co_init_iscsitask(iscsilun, &iTask); 615d045c466SPaolo Bonzini qemu_mutex_lock(&iscsilun->mutex); 616063c3378SPeter Lieven retry: 6179281fe9eSPeter Lieven if (iscsilun->use_16_for_rw) { 618583ec22eSRoy Shterman #if LIBISCSI_API_VERSION >= (20160603) 619583ec22eSRoy Shterman iTask.task = iscsi_write16_iov_task(iscsilun->iscsi, iscsilun->lun, lba, 620583ec22eSRoy Shterman NULL, num_sectors * iscsilun->block_size, 621583ec22eSRoy Shterman iscsilun->block_size, 0, 0, fua, 0, 0, 622583ec22eSRoy Shterman iscsi_co_generic_cb, &iTask, 623583ec22eSRoy Shterman (struct scsi_iovec *)iov->iov, iov->niov); 624583ec22eSRoy Shterman } else { 625583ec22eSRoy Shterman iTask.task = iscsi_write10_iov_task(iscsilun->iscsi, iscsilun->lun, lba, 626583ec22eSRoy Shterman NULL, num_sectors * iscsilun->block_size, 627583ec22eSRoy Shterman iscsilun->block_size, 0, 0, fua, 0, 0, 628583ec22eSRoy Shterman iscsi_co_generic_cb, &iTask, 629583ec22eSRoy Shterman (struct scsi_iovec *)iov->iov, iov->niov); 630583ec22eSRoy Shterman } 631583ec22eSRoy Shterman #else 632063c3378SPeter Lieven iTask.task = iscsi_write16_task(iscsilun->iscsi, iscsilun->lun, lba, 6338c215a9fSPeter Lieven NULL, num_sectors * iscsilun->block_size, 63473b5394eSPeter Lieven iscsilun->block_size, 0, 0, fua, 0, 0, 635063c3378SPeter Lieven iscsi_co_generic_cb, &iTask); 6369281fe9eSPeter Lieven } else { 6379281fe9eSPeter Lieven iTask.task = iscsi_write10_task(iscsilun->iscsi, iscsilun->lun, lba, 6388c215a9fSPeter Lieven NULL, num_sectors * iscsilun->block_size, 63973b5394eSPeter Lieven iscsilun->block_size, 0, 0, fua, 0, 0, 6409281fe9eSPeter Lieven iscsi_co_generic_cb, &iTask); 6419281fe9eSPeter Lieven } 642583ec22eSRoy Shterman #endif 643063c3378SPeter Lieven if (iTask.task == NULL) { 644f6eb0b31SPaolo Bonzini qemu_mutex_unlock(&iscsilun->mutex); 64592397116SPeter Lieven return -ENOMEM; 646f4dfa67fSRonnie Sahlberg } 647583ec22eSRoy Shterman #if LIBISCSI_API_VERSION < (20160603) 648063c3378SPeter Lieven scsi_task_set_iov_out(iTask.task, (struct scsi_iovec *) iov->iov, 649063c3378SPeter Lieven iov->niov); 650583ec22eSRoy Shterman #endif 65166e75c03SFam Zheng iscsi_co_wait_for_task(&iTask, iscsilun); 652c589b249SRonnie Sahlberg 653063c3378SPeter Lieven if (iTask.task != NULL) { 654063c3378SPeter Lieven scsi_free_scsi_task(iTask.task); 655063c3378SPeter Lieven iTask.task = NULL; 656063c3378SPeter Lieven } 657063c3378SPeter Lieven 658063c3378SPeter Lieven if (iTask.do_retry) { 659837c3901SPeter Lieven iTask.complete = 0; 660063c3378SPeter Lieven goto retry; 661063c3378SPeter Lieven } 662063c3378SPeter Lieven 663063c3378SPeter Lieven if (iTask.status != SCSI_STATUS_GOOD) { 66404a408fbSEric Blake iscsi_allocmap_set_invalid(iscsilun, sector_num * BDRV_SECTOR_SIZE, 66504a408fbSEric Blake nb_sectors * BDRV_SECTOR_SIZE); 666e38bc234SPeter Lieven error_report("iSCSI WRITE10/16 failed at lba %" PRIu64 ": %s", lba, 667e38bc234SPeter Lieven iTask.err_str); 668d045c466SPaolo Bonzini r = iTask.err_code; 669d045c466SPaolo Bonzini goto out_unlock; 670063c3378SPeter Lieven } 6717371d56fSPeter Lieven 67204a408fbSEric Blake iscsi_allocmap_set_allocated(iscsilun, sector_num * BDRV_SECTOR_SIZE, 67304a408fbSEric Blake nb_sectors * BDRV_SECTOR_SIZE); 674b03c3805SPeter Lieven 675d045c466SPaolo Bonzini out_unlock: 676d045c466SPaolo Bonzini qemu_mutex_unlock(&iscsilun->mutex); 677e38bc234SPeter Lieven g_free(iTask.err_str); 678d045c466SPaolo Bonzini return r; 6791dde716eSPeter Lieven } 680c589b249SRonnie Sahlberg 681b03c3805SPeter Lieven 682b03c3805SPeter Lieven 68392809c36SEric Blake static int coroutine_fn iscsi_co_block_status(BlockDriverState *bs, 68492809c36SEric Blake bool want_zero, int64_t offset, 68592809c36SEric Blake int64_t bytes, int64_t *pnum, 68692809c36SEric Blake int64_t *map, 68767a0fd2aSFam Zheng BlockDriverState **file) 688b03c3805SPeter Lieven { 689b03c3805SPeter Lieven IscsiLun *iscsilun = bs->opaque; 690b03c3805SPeter Lieven struct scsi_get_lba_status *lbas = NULL; 691b03c3805SPeter Lieven struct scsi_lba_status_descriptor *lbasd = NULL; 692b03c3805SPeter Lieven struct IscsiTask iTask; 693e38bc234SPeter Lieven uint64_t lba; 69492809c36SEric Blake int ret; 695b03c3805SPeter Lieven 69679f9c75eSPeter Lieven iscsi_co_init_iscsitask(iscsilun, &iTask); 69779f9c75eSPeter Lieven 69892809c36SEric Blake assert(QEMU_IS_ALIGNED(offset | bytes, iscsilun->block_size)); 699b03c3805SPeter Lieven 700b03c3805SPeter Lieven /* default to all sectors allocated */ 70192809c36SEric Blake ret = BDRV_BLOCK_DATA | BDRV_BLOCK_OFFSET_VALID; 70292809c36SEric Blake if (map) { 70392809c36SEric Blake *map = offset; 70492809c36SEric Blake } 70592809c36SEric Blake *pnum = bytes; 706b03c3805SPeter Lieven 707b03c3805SPeter Lieven /* LUN does not support logical block provisioning */ 7080a386e48SPeter Lieven if (!iscsilun->lbpme) { 709b03c3805SPeter Lieven goto out; 710b03c3805SPeter Lieven } 711b03c3805SPeter Lieven 71292809c36SEric Blake lba = offset / iscsilun->block_size; 713e38bc234SPeter Lieven 714d045c466SPaolo Bonzini qemu_mutex_lock(&iscsilun->mutex); 715b03c3805SPeter Lieven retry: 716b03c3805SPeter Lieven if (iscsi_get_lba_status_task(iscsilun->iscsi, iscsilun->lun, 717e38bc234SPeter Lieven lba, 8 + 16, iscsi_co_generic_cb, 718b03c3805SPeter Lieven &iTask) == NULL) { 719b03c3805SPeter Lieven ret = -ENOMEM; 720d045c466SPaolo Bonzini goto out_unlock; 721b03c3805SPeter Lieven } 72266e75c03SFam Zheng iscsi_co_wait_for_task(&iTask, iscsilun); 723b03c3805SPeter Lieven 724b03c3805SPeter Lieven if (iTask.do_retry) { 725b03c3805SPeter Lieven if (iTask.task != NULL) { 726b03c3805SPeter Lieven scsi_free_scsi_task(iTask.task); 727b03c3805SPeter Lieven iTask.task = NULL; 728b03c3805SPeter Lieven } 729b03c3805SPeter Lieven iTask.complete = 0; 730b03c3805SPeter Lieven goto retry; 731b03c3805SPeter Lieven } 732b03c3805SPeter Lieven 733b03c3805SPeter Lieven if (iTask.status != SCSI_STATUS_GOOD) { 734b03c3805SPeter Lieven /* in case the get_lba_status_callout fails (i.e. 735b03c3805SPeter Lieven * because the device is busy or the cmd is not 736b03c3805SPeter Lieven * supported) we pretend all blocks are allocated 737b03c3805SPeter Lieven * for backwards compatibility */ 738e38bc234SPeter Lieven error_report("iSCSI GET_LBA_STATUS failed at lba %" PRIu64 ": %s", 739e38bc234SPeter Lieven lba, iTask.err_str); 740d045c466SPaolo Bonzini goto out_unlock; 741b03c3805SPeter Lieven } 742b03c3805SPeter Lieven 743b03c3805SPeter Lieven lbas = scsi_datain_unmarshall(iTask.task); 744b03c3805SPeter Lieven if (lbas == NULL) { 745b03c3805SPeter Lieven ret = -EIO; 746d045c466SPaolo Bonzini goto out_unlock; 747b03c3805SPeter Lieven } 748b03c3805SPeter Lieven 749b03c3805SPeter Lieven lbasd = &lbas->descriptors[0]; 750b03c3805SPeter Lieven 75192809c36SEric Blake if (lba != lbasd->lba) { 752b03c3805SPeter Lieven ret = -EIO; 753d045c466SPaolo Bonzini goto out_unlock; 754b03c3805SPeter Lieven } 755b03c3805SPeter Lieven 7568ee1cef4SEric Blake *pnum = (int64_t) lbasd->num_blocks * iscsilun->block_size; 757b03c3805SPeter Lieven 758b03c3805SPeter Lieven if (lbasd->provisioning == SCSI_PROVISIONING_TYPE_DEALLOCATED || 759b03c3805SPeter Lieven lbasd->provisioning == SCSI_PROVISIONING_TYPE_ANCHORED) { 760b03c3805SPeter Lieven ret &= ~BDRV_BLOCK_DATA; 761b03c3805SPeter Lieven if (iscsilun->lbprz) { 762b03c3805SPeter Lieven ret |= BDRV_BLOCK_ZERO; 763b03c3805SPeter Lieven } 764b03c3805SPeter Lieven } 765b03c3805SPeter Lieven 766b03c3805SPeter Lieven if (ret & BDRV_BLOCK_ZERO) { 76792809c36SEric Blake iscsi_allocmap_set_unallocated(iscsilun, offset, *pnum); 768b03c3805SPeter Lieven } else { 76992809c36SEric Blake iscsi_allocmap_set_allocated(iscsilun, offset, *pnum); 770b03c3805SPeter Lieven } 771b03c3805SPeter Lieven 77292809c36SEric Blake if (*pnum > bytes) { 77392809c36SEric Blake *pnum = bytes; 774b03c3805SPeter Lieven } 775d045c466SPaolo Bonzini out_unlock: 776d045c466SPaolo Bonzini qemu_mutex_unlock(&iscsilun->mutex); 777e38bc234SPeter Lieven g_free(iTask.err_str); 778b03c3805SPeter Lieven out: 779b03c3805SPeter Lieven if (iTask.task != NULL) { 780b03c3805SPeter Lieven scsi_free_scsi_task(iTask.task); 781b03c3805SPeter Lieven } 78292809c36SEric Blake if (ret > 0 && ret & BDRV_BLOCK_OFFSET_VALID && file) { 7833399833fSFam Zheng *file = bs; 7843399833fSFam Zheng } 785b03c3805SPeter Lieven return ret; 786b03c3805SPeter Lieven } 787b03c3805SPeter Lieven 788063c3378SPeter Lieven static int coroutine_fn iscsi_co_readv(BlockDriverState *bs, 789063c3378SPeter Lieven int64_t sector_num, int nb_sectors, 790063c3378SPeter Lieven QEMUIOVector *iov) 7911dde716eSPeter Lieven { 7921dde716eSPeter Lieven IscsiLun *iscsilun = bs->opaque; 793063c3378SPeter Lieven struct IscsiTask iTask; 7941dde716eSPeter Lieven uint64_t lba; 7951dde716eSPeter Lieven uint32_t num_sectors; 796e38bc234SPeter Lieven int r = 0; 797c589b249SRonnie Sahlberg 79894d047a3SEric Blake if (!is_sector_request_lun_aligned(sector_num, nb_sectors, iscsilun)) { 799063c3378SPeter Lieven return -EINVAL; 800f4dfa67fSRonnie Sahlberg } 801f4dfa67fSRonnie Sahlberg 8026bd01f14SEric Blake if (bs->bl.max_transfer) { 8036bd01f14SEric Blake assert(nb_sectors << BDRV_SECTOR_BITS <= bs->bl.max_transfer); 804dc9e7163SPeter Lieven } 805dc9e7163SPeter Lieven 806e1123a3bSPeter Lieven /* if cache.direct is off and we have a valid entry in our allocation map 807e1123a3bSPeter Lieven * we can skip checking the block status and directly return zeroes if 808e1123a3bSPeter Lieven * the request falls within an unallocated area */ 80904a408fbSEric Blake if (iscsi_allocmap_is_valid(iscsilun, sector_num * BDRV_SECTOR_SIZE, 81004a408fbSEric Blake nb_sectors * BDRV_SECTOR_SIZE) && 81104a408fbSEric Blake !iscsi_allocmap_is_allocated(iscsilun, sector_num * BDRV_SECTOR_SIZE, 81204a408fbSEric Blake nb_sectors * BDRV_SECTOR_SIZE)) { 813e1123a3bSPeter Lieven qemu_iovec_memset(iov, 0, 0x00, iov->size); 814e1123a3bSPeter Lieven return 0; 815e1123a3bSPeter Lieven } 816e1123a3bSPeter Lieven 817e1123a3bSPeter Lieven if (nb_sectors >= ISCSI_CHECKALLOC_THRES && 81804a408fbSEric Blake !iscsi_allocmap_is_valid(iscsilun, sector_num * BDRV_SECTOR_SIZE, 81904a408fbSEric Blake nb_sectors * BDRV_SECTOR_SIZE) && 82004a408fbSEric Blake !iscsi_allocmap_is_allocated(iscsilun, sector_num * BDRV_SECTOR_SIZE, 82104a408fbSEric Blake nb_sectors * BDRV_SECTOR_SIZE)) { 82292809c36SEric Blake int64_t pnum; 823e1123a3bSPeter Lieven /* check the block status from the beginning of the cluster 824e1123a3bSPeter Lieven * containing the start sector */ 82592809c36SEric Blake int64_t head; 82692809c36SEric Blake int ret; 827ba059e7bSEric Blake 82892809c36SEric Blake assert(iscsilun->cluster_size); 82992809c36SEric Blake head = (sector_num * BDRV_SECTOR_SIZE) % iscsilun->cluster_size; 83092809c36SEric Blake ret = iscsi_co_block_status(bs, true, 83192809c36SEric Blake sector_num * BDRV_SECTOR_SIZE - head, 83292809c36SEric Blake BDRV_REQUEST_MAX_BYTES, &pnum, NULL, NULL); 833b03c3805SPeter Lieven if (ret < 0) { 834b03c3805SPeter Lieven return ret; 835b03c3805SPeter Lieven } 836e1123a3bSPeter Lieven /* if the whole request falls into an unallocated area we can avoid 837ba059e7bSEric Blake * reading and directly return zeroes instead */ 838e1123a3bSPeter Lieven if (ret & BDRV_BLOCK_ZERO && 83992809c36SEric Blake pnum >= nb_sectors * BDRV_SECTOR_SIZE + head) { 840b03c3805SPeter Lieven qemu_iovec_memset(iov, 0, 0x00, iov->size); 841b03c3805SPeter Lieven return 0; 842b03c3805SPeter Lieven } 843b03c3805SPeter Lieven } 844b03c3805SPeter Lieven 845063c3378SPeter Lieven lba = sector_qemu2lun(sector_num, iscsilun); 846063c3378SPeter Lieven num_sectors = sector_qemu2lun(nb_sectors, iscsilun); 847f4dfa67fSRonnie Sahlberg 848063c3378SPeter Lieven iscsi_co_init_iscsitask(iscsilun, &iTask); 849d045c466SPaolo Bonzini qemu_mutex_lock(&iscsilun->mutex); 850063c3378SPeter Lieven retry: 8519281fe9eSPeter Lieven if (iscsilun->use_16_for_rw) { 852583ec22eSRoy Shterman #if LIBISCSI_API_VERSION >= (20160603) 853583ec22eSRoy Shterman iTask.task = iscsi_read16_iov_task(iscsilun->iscsi, iscsilun->lun, lba, 854583ec22eSRoy Shterman num_sectors * iscsilun->block_size, 855583ec22eSRoy Shterman iscsilun->block_size, 0, 0, 0, 0, 0, 856583ec22eSRoy Shterman iscsi_co_generic_cb, &iTask, 857583ec22eSRoy Shterman (struct scsi_iovec *)iov->iov, iov->niov); 858583ec22eSRoy Shterman } else { 859583ec22eSRoy Shterman iTask.task = iscsi_read10_iov_task(iscsilun->iscsi, iscsilun->lun, lba, 860583ec22eSRoy Shterman num_sectors * iscsilun->block_size, 861583ec22eSRoy Shterman iscsilun->block_size, 862583ec22eSRoy Shterman 0, 0, 0, 0, 0, 863583ec22eSRoy Shterman iscsi_co_generic_cb, &iTask, 864583ec22eSRoy Shterman (struct scsi_iovec *)iov->iov, iov->niov); 865583ec22eSRoy Shterman } 866583ec22eSRoy Shterman #else 867063c3378SPeter Lieven iTask.task = iscsi_read16_task(iscsilun->iscsi, iscsilun->lun, lba, 868063c3378SPeter Lieven num_sectors * iscsilun->block_size, 869063c3378SPeter Lieven iscsilun->block_size, 0, 0, 0, 0, 0, 870063c3378SPeter Lieven iscsi_co_generic_cb, &iTask); 8719281fe9eSPeter Lieven } else { 872063c3378SPeter Lieven iTask.task = iscsi_read10_task(iscsilun->iscsi, iscsilun->lun, lba, 873063c3378SPeter Lieven num_sectors * iscsilun->block_size, 874219c2521SStefan Weil iscsilun->block_size, 875219c2521SStefan Weil 0, 0, 0, 0, 0, 876063c3378SPeter Lieven iscsi_co_generic_cb, &iTask); 877f4dfa67fSRonnie Sahlberg } 878583ec22eSRoy Shterman #endif 879063c3378SPeter Lieven if (iTask.task == NULL) { 880f6eb0b31SPaolo Bonzini qemu_mutex_unlock(&iscsilun->mutex); 88192397116SPeter Lieven return -ENOMEM; 882c589b249SRonnie Sahlberg } 883583ec22eSRoy Shterman #if LIBISCSI_API_VERSION < (20160603) 884063c3378SPeter Lieven scsi_task_set_iov_in(iTask.task, (struct scsi_iovec *) iov->iov, iov->niov); 885583ec22eSRoy Shterman #endif 886c589b249SRonnie Sahlberg 88766e75c03SFam Zheng iscsi_co_wait_for_task(&iTask, iscsilun); 888063c3378SPeter Lieven if (iTask.task != NULL) { 889063c3378SPeter Lieven scsi_free_scsi_task(iTask.task); 890063c3378SPeter Lieven iTask.task = NULL; 891c589b249SRonnie Sahlberg } 892c589b249SRonnie Sahlberg 893063c3378SPeter Lieven if (iTask.do_retry) { 894837c3901SPeter Lieven iTask.complete = 0; 895063c3378SPeter Lieven goto retry; 896c589b249SRonnie Sahlberg } 897c589b249SRonnie Sahlberg 898063c3378SPeter Lieven if (iTask.status != SCSI_STATUS_GOOD) { 899e38bc234SPeter Lieven error_report("iSCSI READ10/16 failed at lba %" PRIu64 ": %s", 900e38bc234SPeter Lieven lba, iTask.err_str); 901e38bc234SPeter Lieven r = iTask.err_code; 9021dde716eSPeter Lieven } 9031dde716eSPeter Lieven 904e38bc234SPeter Lieven qemu_mutex_unlock(&iscsilun->mutex); 905e38bc234SPeter Lieven g_free(iTask.err_str); 906e38bc234SPeter Lieven return r; 9071dde716eSPeter Lieven } 9081dde716eSPeter Lieven 909063c3378SPeter Lieven static int coroutine_fn iscsi_co_flush(BlockDriverState *bs) 9101dde716eSPeter Lieven { 9111dde716eSPeter Lieven IscsiLun *iscsilun = bs->opaque; 912063c3378SPeter Lieven struct IscsiTask iTask; 913e38bc234SPeter Lieven int r = 0; 9141dde716eSPeter Lieven 91573b5394eSPeter Lieven iscsi_co_init_iscsitask(iscsilun, &iTask); 916d045c466SPaolo Bonzini qemu_mutex_lock(&iscsilun->mutex); 917063c3378SPeter Lieven retry: 918063c3378SPeter Lieven if (iscsi_synchronizecache10_task(iscsilun->iscsi, iscsilun->lun, 0, 0, 0, 919063c3378SPeter Lieven 0, iscsi_co_generic_cb, &iTask) == NULL) { 920f6eb0b31SPaolo Bonzini qemu_mutex_unlock(&iscsilun->mutex); 92192397116SPeter Lieven return -ENOMEM; 922c589b249SRonnie Sahlberg } 923c589b249SRonnie Sahlberg 92466e75c03SFam Zheng iscsi_co_wait_for_task(&iTask, iscsilun); 925c589b249SRonnie Sahlberg 926063c3378SPeter Lieven if (iTask.task != NULL) { 927063c3378SPeter Lieven scsi_free_scsi_task(iTask.task); 928063c3378SPeter Lieven iTask.task = NULL; 929063c3378SPeter Lieven } 930063c3378SPeter Lieven 931063c3378SPeter Lieven if (iTask.do_retry) { 932837c3901SPeter Lieven iTask.complete = 0; 933063c3378SPeter Lieven goto retry; 934063c3378SPeter Lieven } 935063c3378SPeter Lieven 936063c3378SPeter Lieven if (iTask.status != SCSI_STATUS_GOOD) { 937e38bc234SPeter Lieven error_report("iSCSI SYNCHRONIZECACHE10 failed: %s", iTask.err_str); 938e38bc234SPeter Lieven r = iTask.err_code; 939063c3378SPeter Lieven } 940063c3378SPeter Lieven 941e38bc234SPeter Lieven qemu_mutex_unlock(&iscsilun->mutex); 942e38bc234SPeter Lieven g_free(iTask.err_str); 943e38bc234SPeter Lieven return r; 944c589b249SRonnie Sahlberg } 945c589b249SRonnie Sahlberg 94698392453SRonnie Sahlberg #ifdef __linux__ 947d045c466SPaolo Bonzini /* Called (via iscsi_service) with QemuMutex held. */ 94898392453SRonnie Sahlberg static void 94998392453SRonnie Sahlberg iscsi_aio_ioctl_cb(struct iscsi_context *iscsi, int status, 95098392453SRonnie Sahlberg void *command_data, void *opaque) 95198392453SRonnie Sahlberg { 95298392453SRonnie Sahlberg IscsiAIOCB *acb = opaque; 95398392453SRonnie Sahlberg 954*88e94fd2SStefan Hajnoczi if (status == SCSI_STATUS_CANCELLED) { 955*88e94fd2SStefan Hajnoczi if (!acb->bh) { 956*88e94fd2SStefan Hajnoczi acb->status = -ECANCELED; 957*88e94fd2SStefan Hajnoczi iscsi_schedule_bh(acb); 958*88e94fd2SStefan Hajnoczi } 959*88e94fd2SStefan Hajnoczi return; 960*88e94fd2SStefan Hajnoczi } 961*88e94fd2SStefan Hajnoczi 96298392453SRonnie Sahlberg acb->status = 0; 96398392453SRonnie Sahlberg if (status < 0) { 96498392453SRonnie Sahlberg error_report("Failed to ioctl(SG_IO) to iSCSI lun. %s", 96598392453SRonnie Sahlberg iscsi_get_error(iscsi)); 966e01dd3daSFam Zheng acb->status = iscsi_translate_sense(&acb->task->sense); 96798392453SRonnie Sahlberg } 96898392453SRonnie Sahlberg 96998392453SRonnie Sahlberg acb->ioh->driver_status = 0; 97098392453SRonnie Sahlberg acb->ioh->host_status = 0; 97198392453SRonnie Sahlberg acb->ioh->resid = 0; 972644c6869SVadim Rozenfeld acb->ioh->status = status; 97398392453SRonnie Sahlberg 97498392453SRonnie Sahlberg #define SG_ERR_DRIVER_SENSE 0x08 97598392453SRonnie Sahlberg 97698392453SRonnie Sahlberg if (status == SCSI_STATUS_CHECK_CONDITION && acb->task->datain.size >= 2) { 97798392453SRonnie Sahlberg int ss; 97898392453SRonnie Sahlberg 97998392453SRonnie Sahlberg acb->ioh->driver_status |= SG_ERR_DRIVER_SENSE; 98098392453SRonnie Sahlberg 98198392453SRonnie Sahlberg acb->ioh->sb_len_wr = acb->task->datain.size - 2; 98298392453SRonnie Sahlberg ss = (acb->ioh->mx_sb_len >= acb->ioh->sb_len_wr) ? 98398392453SRonnie Sahlberg acb->ioh->mx_sb_len : acb->ioh->sb_len_wr; 98498392453SRonnie Sahlberg memcpy(acb->ioh->sbp, &acb->task->datain.data[2], ss); 98598392453SRonnie Sahlberg } 98698392453SRonnie Sahlberg 987cfb3f506SPaolo Bonzini iscsi_schedule_bh(acb); 98898392453SRonnie Sahlberg } 98998392453SRonnie Sahlberg 9904bb17ab5SFam Zheng static void iscsi_ioctl_bh_completion(void *opaque) 9914bb17ab5SFam Zheng { 9924bb17ab5SFam Zheng IscsiAIOCB *acb = opaque; 9934bb17ab5SFam Zheng 9944bb17ab5SFam Zheng qemu_bh_delete(acb->bh); 9954bb17ab5SFam Zheng acb->common.cb(acb->common.opaque, acb->ret); 9964bb17ab5SFam Zheng qemu_aio_unref(acb); 9974bb17ab5SFam Zheng } 9984bb17ab5SFam Zheng 9994bb17ab5SFam Zheng static void iscsi_ioctl_handle_emulated(IscsiAIOCB *acb, int req, void *buf) 10004bb17ab5SFam Zheng { 10014bb17ab5SFam Zheng BlockDriverState *bs = acb->common.bs; 10024bb17ab5SFam Zheng IscsiLun *iscsilun = bs->opaque; 10034bb17ab5SFam Zheng int ret = 0; 10044bb17ab5SFam Zheng 10054bb17ab5SFam Zheng switch (req) { 10064bb17ab5SFam Zheng case SG_GET_VERSION_NUM: 10074bb17ab5SFam Zheng *(int *)buf = 30000; 10084bb17ab5SFam Zheng break; 10094bb17ab5SFam Zheng case SG_GET_SCSI_ID: 10104bb17ab5SFam Zheng ((struct sg_scsi_id *)buf)->scsi_type = iscsilun->type; 10114bb17ab5SFam Zheng break; 10124bb17ab5SFam Zheng default: 10134bb17ab5SFam Zheng ret = -EINVAL; 10144bb17ab5SFam Zheng } 10154bb17ab5SFam Zheng assert(!acb->bh); 10164bb17ab5SFam Zheng acb->bh = aio_bh_new(bdrv_get_aio_context(bs), 10174bb17ab5SFam Zheng iscsi_ioctl_bh_completion, acb); 10184bb17ab5SFam Zheng acb->ret = ret; 10194bb17ab5SFam Zheng qemu_bh_schedule(acb->bh); 10204bb17ab5SFam Zheng } 10214bb17ab5SFam Zheng 10227c84b1b8SMarkus Armbruster static BlockAIOCB *iscsi_aio_ioctl(BlockDriverState *bs, 102398392453SRonnie Sahlberg unsigned long int req, void *buf, 1024097310b5SMarkus Armbruster BlockCompletionFunc *cb, void *opaque) 102598392453SRonnie Sahlberg { 102698392453SRonnie Sahlberg IscsiLun *iscsilun = bs->opaque; 102798392453SRonnie Sahlberg struct iscsi_context *iscsi = iscsilun->iscsi; 102898392453SRonnie Sahlberg struct iscsi_data data; 102998392453SRonnie Sahlberg IscsiAIOCB *acb; 103098392453SRonnie Sahlberg 1031d7331bedSStefan Hajnoczi acb = qemu_aio_get(&iscsi_aiocb_info, bs, cb, opaque); 103298392453SRonnie Sahlberg 103398392453SRonnie Sahlberg acb->iscsilun = iscsilun; 10341bd075f2SPaolo Bonzini acb->bh = NULL; 10351bd075f2SPaolo Bonzini acb->status = -EINPROGRESS; 103698392453SRonnie Sahlberg acb->ioh = buf; 1037c1004487SStefan Hajnoczi acb->cancelled = false; 103898392453SRonnie Sahlberg 10394bb17ab5SFam Zheng if (req != SG_IO) { 10404bb17ab5SFam Zheng iscsi_ioctl_handle_emulated(acb, req, buf); 10414bb17ab5SFam Zheng return &acb->common; 10424bb17ab5SFam Zheng } 10434bb17ab5SFam Zheng 1044a6b3167fSPeter Lieven if (acb->ioh->cmd_len > SCSI_CDB_MAX_SIZE) { 1045a6b3167fSPeter Lieven error_report("iSCSI: ioctl error CDB exceeds max size (%d > %d)", 1046a6b3167fSPeter Lieven acb->ioh->cmd_len, SCSI_CDB_MAX_SIZE); 1047a6b3167fSPeter Lieven qemu_aio_unref(acb); 1048a6b3167fSPeter Lieven return NULL; 1049a6b3167fSPeter Lieven } 1050a6b3167fSPeter Lieven 105198392453SRonnie Sahlberg acb->task = malloc(sizeof(struct scsi_task)); 105298392453SRonnie Sahlberg if (acb->task == NULL) { 105398392453SRonnie Sahlberg error_report("iSCSI: Failed to allocate task for scsi command. %s", 105498392453SRonnie Sahlberg iscsi_get_error(iscsi)); 10558007429aSFam Zheng qemu_aio_unref(acb); 105698392453SRonnie Sahlberg return NULL; 105798392453SRonnie Sahlberg } 105898392453SRonnie Sahlberg memset(acb->task, 0, sizeof(struct scsi_task)); 105998392453SRonnie Sahlberg 106098392453SRonnie Sahlberg switch (acb->ioh->dxfer_direction) { 106198392453SRonnie Sahlberg case SG_DXFER_TO_DEV: 106298392453SRonnie Sahlberg acb->task->xfer_dir = SCSI_XFER_WRITE; 106398392453SRonnie Sahlberg break; 106498392453SRonnie Sahlberg case SG_DXFER_FROM_DEV: 106598392453SRonnie Sahlberg acb->task->xfer_dir = SCSI_XFER_READ; 106698392453SRonnie Sahlberg break; 106798392453SRonnie Sahlberg default: 106898392453SRonnie Sahlberg acb->task->xfer_dir = SCSI_XFER_NONE; 106998392453SRonnie Sahlberg break; 107098392453SRonnie Sahlberg } 107198392453SRonnie Sahlberg 107298392453SRonnie Sahlberg acb->task->cdb_size = acb->ioh->cmd_len; 107398392453SRonnie Sahlberg memcpy(&acb->task->cdb[0], acb->ioh->cmdp, acb->ioh->cmd_len); 107498392453SRonnie Sahlberg acb->task->expxferlen = acb->ioh->dxfer_len; 107598392453SRonnie Sahlberg 10760a53f010SRonnie Sahlberg data.size = 0; 1077d045c466SPaolo Bonzini qemu_mutex_lock(&iscsilun->mutex); 107898392453SRonnie Sahlberg if (acb->task->xfer_dir == SCSI_XFER_WRITE) { 10790a53f010SRonnie Sahlberg if (acb->ioh->iovec_count == 0) { 108098392453SRonnie Sahlberg data.data = acb->ioh->dxferp; 108198392453SRonnie Sahlberg data.size = acb->ioh->dxfer_len; 10820a53f010SRonnie Sahlberg } else { 10830a53f010SRonnie Sahlberg scsi_task_set_iov_out(acb->task, 10840a53f010SRonnie Sahlberg (struct scsi_iovec *) acb->ioh->dxferp, 10850a53f010SRonnie Sahlberg acb->ioh->iovec_count); 108698392453SRonnie Sahlberg } 10870a53f010SRonnie Sahlberg } 10880a53f010SRonnie Sahlberg 108998392453SRonnie Sahlberg if (iscsi_scsi_command_async(iscsi, iscsilun->lun, acb->task, 109098392453SRonnie Sahlberg iscsi_aio_ioctl_cb, 10910a53f010SRonnie Sahlberg (data.size > 0) ? &data : NULL, 109298392453SRonnie Sahlberg acb) != 0) { 1093d045c466SPaolo Bonzini qemu_mutex_unlock(&iscsilun->mutex); 109498392453SRonnie Sahlberg scsi_free_scsi_task(acb->task); 10958007429aSFam Zheng qemu_aio_unref(acb); 109698392453SRonnie Sahlberg return NULL; 109798392453SRonnie Sahlberg } 109898392453SRonnie Sahlberg 109998392453SRonnie Sahlberg /* tell libiscsi to read straight into the buffer we got from ioctl */ 110098392453SRonnie Sahlberg if (acb->task->xfer_dir == SCSI_XFER_READ) { 11010a53f010SRonnie Sahlberg if (acb->ioh->iovec_count == 0) { 110298392453SRonnie Sahlberg scsi_task_add_data_in_buffer(acb->task, 110398392453SRonnie Sahlberg acb->ioh->dxfer_len, 110498392453SRonnie Sahlberg acb->ioh->dxferp); 11050a53f010SRonnie Sahlberg } else { 11060a53f010SRonnie Sahlberg scsi_task_set_iov_in(acb->task, 11070a53f010SRonnie Sahlberg (struct scsi_iovec *) acb->ioh->dxferp, 11080a53f010SRonnie Sahlberg acb->ioh->iovec_count); 11090a53f010SRonnie Sahlberg } 111098392453SRonnie Sahlberg } 111198392453SRonnie Sahlberg 111298392453SRonnie Sahlberg iscsi_set_events(iscsilun); 1113d045c466SPaolo Bonzini qemu_mutex_unlock(&iscsilun->mutex); 111498392453SRonnie Sahlberg 111598392453SRonnie Sahlberg return &acb->common; 111698392453SRonnie Sahlberg } 111798392453SRonnie Sahlberg 111898392453SRonnie Sahlberg #endif 111998392453SRonnie Sahlberg 1120c589b249SRonnie Sahlberg static int64_t 1121c589b249SRonnie Sahlberg iscsi_getlength(BlockDriverState *bs) 1122c589b249SRonnie Sahlberg { 1123c589b249SRonnie Sahlberg IscsiLun *iscsilun = bs->opaque; 1124c589b249SRonnie Sahlberg int64_t len; 1125c589b249SRonnie Sahlberg 1126c589b249SRonnie Sahlberg len = iscsilun->num_blocks; 1127c589b249SRonnie Sahlberg len *= iscsilun->block_size; 1128c589b249SRonnie Sahlberg 1129c589b249SRonnie Sahlberg return len; 1130c589b249SRonnie Sahlberg } 1131c589b249SRonnie Sahlberg 113265f3e339SPeter Lieven static int 1133f5a5ca79SManos Pitsidianakis coroutine_fn iscsi_co_pdiscard(BlockDriverState *bs, int64_t offset, int bytes) 113465f3e339SPeter Lieven { 113565f3e339SPeter Lieven IscsiLun *iscsilun = bs->opaque; 113665f3e339SPeter Lieven struct IscsiTask iTask; 113765f3e339SPeter Lieven struct unmap_list list; 1138d045c466SPaolo Bonzini int r = 0; 113965f3e339SPeter Lieven 1140f5a5ca79SManos Pitsidianakis if (!is_byte_request_lun_aligned(offset, bytes, iscsilun)) { 114149228d1eSEric Blake return -ENOTSUP; 114249228d1eSEric Blake } 114365f3e339SPeter Lieven 114465f3e339SPeter Lieven if (!iscsilun->lbp.lbpu) { 114565f3e339SPeter Lieven /* UNMAP is not supported by the target */ 114665f3e339SPeter Lieven return 0; 114765f3e339SPeter Lieven } 114865f3e339SPeter Lieven 114997c7e85cSEric Blake list.lba = offset / iscsilun->block_size; 1150f5a5ca79SManos Pitsidianakis list.num = bytes / iscsilun->block_size; 115165f3e339SPeter Lieven 115265f3e339SPeter Lieven iscsi_co_init_iscsitask(iscsilun, &iTask); 1153d045c466SPaolo Bonzini qemu_mutex_lock(&iscsilun->mutex); 115465f3e339SPeter Lieven retry: 115565f3e339SPeter Lieven if (iscsi_unmap_task(iscsilun->iscsi, iscsilun->lun, 0, 0, &list, 1, 115665f3e339SPeter Lieven iscsi_co_generic_cb, &iTask) == NULL) { 1157d045c466SPaolo Bonzini r = -ENOMEM; 1158d045c466SPaolo Bonzini goto out_unlock; 115965f3e339SPeter Lieven } 116065f3e339SPeter Lieven 116166e75c03SFam Zheng iscsi_co_wait_for_task(&iTask, iscsilun); 116265f3e339SPeter Lieven 116365f3e339SPeter Lieven if (iTask.task != NULL) { 116465f3e339SPeter Lieven scsi_free_scsi_task(iTask.task); 116565f3e339SPeter Lieven iTask.task = NULL; 116665f3e339SPeter Lieven } 116765f3e339SPeter Lieven 116865f3e339SPeter Lieven if (iTask.do_retry) { 1169837c3901SPeter Lieven iTask.complete = 0; 117065f3e339SPeter Lieven goto retry; 117165f3e339SPeter Lieven } 117265f3e339SPeter Lieven 117304a408fbSEric Blake iscsi_allocmap_set_invalid(iscsilun, offset, bytes); 1174aef172ffSPeter Lieven 117565f3e339SPeter Lieven if (iTask.status == SCSI_STATUS_CHECK_CONDITION) { 117665f3e339SPeter Lieven /* the target might fail with a check condition if it 117765f3e339SPeter Lieven is not happy with the alignment of the UNMAP request 117865f3e339SPeter Lieven we silently fail in this case */ 1179d045c466SPaolo Bonzini goto out_unlock; 118065f3e339SPeter Lieven } 118165f3e339SPeter Lieven 118265f3e339SPeter Lieven if (iTask.status != SCSI_STATUS_GOOD) { 1183e38bc234SPeter Lieven error_report("iSCSI UNMAP failed at lba %" PRIu64 ": %s", 1184e38bc234SPeter Lieven list.lba, iTask.err_str); 1185d045c466SPaolo Bonzini r = iTask.err_code; 1186d045c466SPaolo Bonzini goto out_unlock; 118765f3e339SPeter Lieven } 118865f3e339SPeter Lieven 1189d045c466SPaolo Bonzini out_unlock: 1190d045c466SPaolo Bonzini qemu_mutex_unlock(&iscsilun->mutex); 1191e38bc234SPeter Lieven g_free(iTask.err_str); 1192d045c466SPaolo Bonzini return r; 119365f3e339SPeter Lieven } 119465f3e339SPeter Lieven 1195d4cd9615SPeter Lieven static int 119694d047a3SEric Blake coroutine_fn iscsi_co_pwrite_zeroes(BlockDriverState *bs, int64_t offset, 1197f5a5ca79SManos Pitsidianakis int bytes, BdrvRequestFlags flags) 1198d4cd9615SPeter Lieven { 1199d4cd9615SPeter Lieven IscsiLun *iscsilun = bs->opaque; 1200d4cd9615SPeter Lieven struct IscsiTask iTask; 1201d4cd9615SPeter Lieven uint64_t lba; 1202d4cd9615SPeter Lieven uint32_t nb_blocks; 12039281fe9eSPeter Lieven bool use_16_for_ws = iscsilun->use_16_for_rw; 1204d045c466SPaolo Bonzini int r = 0; 1205d4cd9615SPeter Lieven 1206f5a5ca79SManos Pitsidianakis if (!is_byte_request_lun_aligned(offset, bytes, iscsilun)) { 120794d047a3SEric Blake return -ENOTSUP; 1208d4cd9615SPeter Lieven } 1209d4cd9615SPeter Lieven 12109281fe9eSPeter Lieven if (flags & BDRV_REQ_MAY_UNMAP) { 12119281fe9eSPeter Lieven if (!use_16_for_ws && !iscsilun->lbp.lbpws10) { 12129281fe9eSPeter Lieven /* WRITESAME10 with UNMAP is unsupported try WRITESAME16 */ 12139281fe9eSPeter Lieven use_16_for_ws = true; 12149281fe9eSPeter Lieven } 12159281fe9eSPeter Lieven if (use_16_for_ws && !iscsilun->lbp.lbpws) { 12169281fe9eSPeter Lieven /* WRITESAME16 with UNMAP is not supported by the target, 12179281fe9eSPeter Lieven * fall back and try WRITESAME10/16 without UNMAP */ 1218dbe5c58fSPeter Lieven flags &= ~BDRV_REQ_MAY_UNMAP; 12199281fe9eSPeter Lieven use_16_for_ws = iscsilun->use_16_for_rw; 12209281fe9eSPeter Lieven } 1221fa6252b0SPaolo Bonzini } 1222fa6252b0SPaolo Bonzini 1223dbe5c58fSPeter Lieven if (!(flags & BDRV_REQ_MAY_UNMAP) && !iscsilun->has_write_same) { 1224dbe5c58fSPeter Lieven /* WRITESAME without UNMAP is not supported by the target */ 1225d4cd9615SPeter Lieven return -ENOTSUP; 1226d4cd9615SPeter Lieven } 1227d4cd9615SPeter Lieven 122894d047a3SEric Blake lba = offset / iscsilun->block_size; 1229f5a5ca79SManos Pitsidianakis nb_blocks = bytes / iscsilun->block_size; 1230d4cd9615SPeter Lieven 1231d4cd9615SPeter Lieven if (iscsilun->zeroblock == NULL) { 12324d5a3f88SKevin Wolf iscsilun->zeroblock = g_try_malloc0(iscsilun->block_size); 12334d5a3f88SKevin Wolf if (iscsilun->zeroblock == NULL) { 12344d5a3f88SKevin Wolf return -ENOMEM; 12354d5a3f88SKevin Wolf } 1236d4cd9615SPeter Lieven } 1237d4cd9615SPeter Lieven 1238d045c466SPaolo Bonzini qemu_mutex_lock(&iscsilun->mutex); 1239d4cd9615SPeter Lieven iscsi_co_init_iscsitask(iscsilun, &iTask); 1240d4cd9615SPeter Lieven retry: 12419281fe9eSPeter Lieven if (use_16_for_ws) { 12429281fe9eSPeter Lieven iTask.task = iscsi_writesame16_task(iscsilun->iscsi, iscsilun->lun, lba, 1243d4cd9615SPeter Lieven iscsilun->zeroblock, iscsilun->block_size, 1244d4cd9615SPeter Lieven nb_blocks, 0, !!(flags & BDRV_REQ_MAY_UNMAP), 12459281fe9eSPeter Lieven 0, 0, iscsi_co_generic_cb, &iTask); 12469281fe9eSPeter Lieven } else { 12479281fe9eSPeter Lieven iTask.task = iscsi_writesame10_task(iscsilun->iscsi, iscsilun->lun, lba, 12489281fe9eSPeter Lieven iscsilun->zeroblock, iscsilun->block_size, 12499281fe9eSPeter Lieven nb_blocks, 0, !!(flags & BDRV_REQ_MAY_UNMAP), 12509281fe9eSPeter Lieven 0, 0, iscsi_co_generic_cb, &iTask); 12519281fe9eSPeter Lieven } 12529281fe9eSPeter Lieven if (iTask.task == NULL) { 1253f6eb0b31SPaolo Bonzini qemu_mutex_unlock(&iscsilun->mutex); 125492397116SPeter Lieven return -ENOMEM; 1255d4cd9615SPeter Lieven } 1256d4cd9615SPeter Lieven 125766e75c03SFam Zheng iscsi_co_wait_for_task(&iTask, iscsilun); 1258d4cd9615SPeter Lieven 1259d9738fd2SPeter Lieven if (iTask.status == SCSI_STATUS_CHECK_CONDITION && 1260d9738fd2SPeter Lieven iTask.task->sense.key == SCSI_SENSE_ILLEGAL_REQUEST && 126127898a5dSPaolo Bonzini (iTask.task->sense.ascq == SCSI_SENSE_ASCQ_INVALID_OPERATION_CODE || 126227898a5dSPaolo Bonzini iTask.task->sense.ascq == SCSI_SENSE_ASCQ_INVALID_FIELD_IN_CDB)) { 1263d9738fd2SPeter Lieven /* WRITE SAME is not supported by the target */ 1264d9738fd2SPeter Lieven iscsilun->has_write_same = false; 1265d9738fd2SPeter Lieven scsi_free_scsi_task(iTask.task); 1266d045c466SPaolo Bonzini r = -ENOTSUP; 1267d045c466SPaolo Bonzini goto out_unlock; 1268d9738fd2SPeter Lieven } 1269d9738fd2SPeter Lieven 1270d4cd9615SPeter Lieven if (iTask.task != NULL) { 1271d4cd9615SPeter Lieven scsi_free_scsi_task(iTask.task); 1272d4cd9615SPeter Lieven iTask.task = NULL; 1273d4cd9615SPeter Lieven } 1274d4cd9615SPeter Lieven 1275d4cd9615SPeter Lieven if (iTask.do_retry) { 1276837c3901SPeter Lieven iTask.complete = 0; 1277d4cd9615SPeter Lieven goto retry; 1278d4cd9615SPeter Lieven } 1279d4cd9615SPeter Lieven 1280d4cd9615SPeter Lieven if (iTask.status != SCSI_STATUS_GOOD) { 128104a408fbSEric Blake iscsi_allocmap_set_invalid(iscsilun, offset, bytes); 1282e38bc234SPeter Lieven error_report("iSCSI WRITESAME10/16 failed at lba %" PRIu64 ": %s", 1283e38bc234SPeter Lieven lba, iTask.err_str); 1284d045c466SPaolo Bonzini r = iTask.err_code; 1285d045c466SPaolo Bonzini goto out_unlock; 1286d4cd9615SPeter Lieven } 1287d4cd9615SPeter Lieven 1288b03c3805SPeter Lieven if (flags & BDRV_REQ_MAY_UNMAP) { 128904a408fbSEric Blake iscsi_allocmap_set_invalid(iscsilun, offset, bytes); 1290b03c3805SPeter Lieven } else { 129104a408fbSEric Blake iscsi_allocmap_set_allocated(iscsilun, offset, bytes); 1292b03c3805SPeter Lieven } 1293b03c3805SPeter Lieven 1294d045c466SPaolo Bonzini out_unlock: 1295d045c466SPaolo Bonzini qemu_mutex_unlock(&iscsilun->mutex); 1296e38bc234SPeter Lieven g_free(iTask.err_str); 1297d045c466SPaolo Bonzini return r; 1298d4cd9615SPeter Lieven } 1299d4cd9615SPeter Lieven 130043171420SKevin Wolf static void apply_chap(struct iscsi_context *iscsi, QemuOpts *opts, 1301f2917853SPaolo Bonzini Error **errp) 1302f9dadc98SRonnie Sahlberg { 1303f9dadc98SRonnie Sahlberg const char *user = NULL; 1304f9dadc98SRonnie Sahlberg const char *password = NULL; 1305b189346eSDaniel P. Berrange const char *secretid; 1306b189346eSDaniel P. Berrange char *secret = NULL; 1307f9dadc98SRonnie Sahlberg 1308f9dadc98SRonnie Sahlberg user = qemu_opt_get(opts, "user"); 1309f9dadc98SRonnie Sahlberg if (!user) { 1310f2917853SPaolo Bonzini return; 1311f9dadc98SRonnie Sahlberg } 1312f9dadc98SRonnie Sahlberg 1313b189346eSDaniel P. Berrange secretid = qemu_opt_get(opts, "password-secret"); 1314f9dadc98SRonnie Sahlberg password = qemu_opt_get(opts, "password"); 1315b189346eSDaniel P. Berrange if (secretid && password) { 1316b189346eSDaniel P. Berrange error_setg(errp, "'password' and 'password-secret' properties are " 1317b189346eSDaniel P. Berrange "mutually exclusive"); 1318b189346eSDaniel P. Berrange return; 1319b189346eSDaniel P. Berrange } 1320b189346eSDaniel P. Berrange if (secretid) { 1321b189346eSDaniel P. Berrange secret = qcrypto_secret_lookup_as_utf8(secretid, errp); 1322b189346eSDaniel P. Berrange if (!secret) { 1323b189346eSDaniel P. Berrange return; 1324b189346eSDaniel P. Berrange } 1325b189346eSDaniel P. Berrange password = secret; 1326b189346eSDaniel P. Berrange } else if (!password) { 1327f2917853SPaolo Bonzini error_setg(errp, "CHAP username specified but no password was given"); 1328f2917853SPaolo Bonzini return; 1329f9dadc98SRonnie Sahlberg } 1330f9dadc98SRonnie Sahlberg 1331f9dadc98SRonnie Sahlberg if (iscsi_set_initiator_username_pwd(iscsi, user, password)) { 1332f2917853SPaolo Bonzini error_setg(errp, "Failed to set initiator username and password"); 1333f2917853SPaolo Bonzini } 1334b189346eSDaniel P. Berrange 1335b189346eSDaniel P. Berrange g_free(secret); 1336f9dadc98SRonnie Sahlberg } 1337f9dadc98SRonnie Sahlberg 133881aa2a0fSKevin Wolf static void apply_header_digest(struct iscsi_context *iscsi, QemuOpts *opts, 1339f2917853SPaolo Bonzini Error **errp) 1340f9dadc98SRonnie Sahlberg { 1341f9dadc98SRonnie Sahlberg const char *digest = NULL; 1342f9dadc98SRonnie Sahlberg 1343f9dadc98SRonnie Sahlberg digest = qemu_opt_get(opts, "header-digest"); 1344f9dadc98SRonnie Sahlberg if (!digest) { 134581aa2a0fSKevin Wolf iscsi_set_header_digest(iscsi, ISCSI_HEADER_DIGEST_NONE_CRC32C); 134631eb1202SKevin Wolf } else if (!strcmp(digest, "crc32c")) { 1347f9dadc98SRonnie Sahlberg iscsi_set_header_digest(iscsi, ISCSI_HEADER_DIGEST_CRC32C); 134831eb1202SKevin Wolf } else if (!strcmp(digest, "none")) { 1349f9dadc98SRonnie Sahlberg iscsi_set_header_digest(iscsi, ISCSI_HEADER_DIGEST_NONE); 135031eb1202SKevin Wolf } else if (!strcmp(digest, "crc32c-none")) { 1351f9dadc98SRonnie Sahlberg iscsi_set_header_digest(iscsi, ISCSI_HEADER_DIGEST_CRC32C_NONE); 135231eb1202SKevin Wolf } else if (!strcmp(digest, "none-crc32c")) { 1353f9dadc98SRonnie Sahlberg iscsi_set_header_digest(iscsi, ISCSI_HEADER_DIGEST_NONE_CRC32C); 1354f9dadc98SRonnie Sahlberg } else { 1355f2917853SPaolo Bonzini error_setg(errp, "Invalid header-digest setting : %s", digest); 1356f9dadc98SRonnie Sahlberg } 1357f9dadc98SRonnie Sahlberg } 1358f9dadc98SRonnie Sahlberg 1359d4e79929SKevin Wolf static char *get_initiator_name(QemuOpts *opts) 1360f9dadc98SRonnie Sahlberg { 13615accc840SPaolo Bonzini const char *name; 13625accc840SPaolo Bonzini char *iscsi_name; 13635accc840SPaolo Bonzini UuidInfo *uuid_info; 1364f9dadc98SRonnie Sahlberg 1365f9dadc98SRonnie Sahlberg name = qemu_opt_get(opts, "initiator-name"); 13665accc840SPaolo Bonzini if (name) { 13675accc840SPaolo Bonzini return g_strdup(name); 13685accc840SPaolo Bonzini } 1369f9dadc98SRonnie Sahlberg 13705accc840SPaolo Bonzini uuid_info = qmp_query_uuid(NULL); 13715accc840SPaolo Bonzini if (strcmp(uuid_info->UUID, UUID_NONE) == 0) { 13725accc840SPaolo Bonzini name = qemu_get_vm_name(); 1373f2ef4a6dSPaolo Bonzini } else { 13745accc840SPaolo Bonzini name = uuid_info->UUID; 1375f2ef4a6dSPaolo Bonzini } 13765accc840SPaolo Bonzini iscsi_name = g_strdup_printf("iqn.2008-11.org.linux-kvm%s%s", 13775accc840SPaolo Bonzini name ? ":" : "", name ? name : ""); 13785accc840SPaolo Bonzini qapi_free_UuidInfo(uuid_info); 13795accc840SPaolo Bonzini return iscsi_name; 1380f9dadc98SRonnie Sahlberg } 1381f9dadc98SRonnie Sahlberg 13825b5d34ecSPeter Lieven static void iscsi_nop_timed_event(void *opaque) 13835b5d34ecSPeter Lieven { 13845b5d34ecSPeter Lieven IscsiLun *iscsilun = opaque; 13855b5d34ecSPeter Lieven 1386d045c466SPaolo Bonzini qemu_mutex_lock(&iscsilun->mutex); 13875dd7a535SPeter Lieven if (iscsi_get_nops_in_flight(iscsilun->iscsi) >= MAX_NOP_FAILURES) { 13885b5d34ecSPeter Lieven error_report("iSCSI: NOP timeout. Reconnecting..."); 13895dd7a535SPeter Lieven iscsilun->request_timed_out = true; 13905dd7a535SPeter Lieven } else if (iscsi_nop_out_async(iscsilun->iscsi, NULL, NULL, 0, NULL) != 0) { 13915b5d34ecSPeter Lieven error_report("iSCSI: failed to sent NOP-Out. Disabling NOP messages."); 13922f47da5fSPaolo Bonzini goto out; 13935b5d34ecSPeter Lieven } 13945b5d34ecSPeter Lieven 1395bc72ad67SAlex Bligh timer_mod(iscsilun->nop_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + NOP_INTERVAL); 13965b5d34ecSPeter Lieven iscsi_set_events(iscsilun); 13972f47da5fSPaolo Bonzini 13982f47da5fSPaolo Bonzini out: 1399d045c466SPaolo Bonzini qemu_mutex_unlock(&iscsilun->mutex); 14005b5d34ecSPeter Lieven } 14015b5d34ecSPeter Lieven 1402f2917853SPaolo Bonzini static void iscsi_readcapacity_sync(IscsiLun *iscsilun, Error **errp) 1403cb1b83e7SPeter Lieven { 1404cb1b83e7SPeter Lieven struct scsi_task *task = NULL; 1405cb1b83e7SPeter Lieven struct scsi_readcapacity10 *rc10 = NULL; 1406cb1b83e7SPeter Lieven struct scsi_readcapacity16 *rc16 = NULL; 1407cb1b83e7SPeter Lieven int retries = ISCSI_CMD_RETRIES; 1408cb1b83e7SPeter Lieven 14091288844eSPaolo Bonzini do { 14101288844eSPaolo Bonzini if (task != NULL) { 14111288844eSPaolo Bonzini scsi_free_scsi_task(task); 14121288844eSPaolo Bonzini task = NULL; 14131288844eSPaolo Bonzini } 14141288844eSPaolo Bonzini 1415cb1b83e7SPeter Lieven switch (iscsilun->type) { 1416cb1b83e7SPeter Lieven case TYPE_DISK: 1417cb1b83e7SPeter Lieven task = iscsi_readcapacity16_sync(iscsilun->iscsi, iscsilun->lun); 14181288844eSPaolo Bonzini if (task != NULL && task->status == SCSI_STATUS_GOOD) { 1419cb1b83e7SPeter Lieven rc16 = scsi_datain_unmarshall(task); 1420cb1b83e7SPeter Lieven if (rc16 == NULL) { 1421f2917853SPaolo Bonzini error_setg(errp, "iSCSI: Failed to unmarshall readcapacity16 data."); 14221288844eSPaolo Bonzini } else { 1423cb1b83e7SPeter Lieven iscsilun->block_size = rc16->block_length; 1424cb1b83e7SPeter Lieven iscsilun->num_blocks = rc16->returned_lba + 1; 14250a386e48SPeter Lieven iscsilun->lbpme = !!rc16->lbpme; 14260a386e48SPeter Lieven iscsilun->lbprz = !!rc16->lbprz; 14279281fe9eSPeter Lieven iscsilun->use_16_for_rw = (rc16->returned_lba > 0xffffffff); 14281288844eSPaolo Bonzini } 1429cb1b83e7SPeter Lieven break; 14301cb6d137SZhu Lingshan } 14311cb6d137SZhu Lingshan if (task != NULL && task->status == SCSI_STATUS_CHECK_CONDITION 14321cb6d137SZhu Lingshan && task->sense.key == SCSI_SENSE_UNIT_ATTENTION) { 14331cb6d137SZhu Lingshan break; 14341cb6d137SZhu Lingshan } 14351cb6d137SZhu Lingshan /* Fall through and try READ CAPACITY(10) instead. */ 1436cb1b83e7SPeter Lieven case TYPE_ROM: 1437cb1b83e7SPeter Lieven task = iscsi_readcapacity10_sync(iscsilun->iscsi, iscsilun->lun, 0, 0); 14381288844eSPaolo Bonzini if (task != NULL && task->status == SCSI_STATUS_GOOD) { 1439cb1b83e7SPeter Lieven rc10 = scsi_datain_unmarshall(task); 1440cb1b83e7SPeter Lieven if (rc10 == NULL) { 1441f2917853SPaolo Bonzini error_setg(errp, "iSCSI: Failed to unmarshall readcapacity10 data."); 14421288844eSPaolo Bonzini } else { 1443cb1b83e7SPeter Lieven iscsilun->block_size = rc10->block_size; 1444cb1b83e7SPeter Lieven if (rc10->lba == 0) { 1445cb1b83e7SPeter Lieven /* blank disk loaded */ 1446cb1b83e7SPeter Lieven iscsilun->num_blocks = 0; 1447cb1b83e7SPeter Lieven } else { 1448cb1b83e7SPeter Lieven iscsilun->num_blocks = rc10->lba + 1; 1449cb1b83e7SPeter Lieven } 14501288844eSPaolo Bonzini } 14511288844eSPaolo Bonzini } 1452cb1b83e7SPeter Lieven break; 1453cb1b83e7SPeter Lieven default: 1454f2917853SPaolo Bonzini return; 1455cb1b83e7SPeter Lieven } 14561288844eSPaolo Bonzini } while (task != NULL && task->status == SCSI_STATUS_CHECK_CONDITION 14571288844eSPaolo Bonzini && task->sense.key == SCSI_SENSE_UNIT_ATTENTION 14581288844eSPaolo Bonzini && retries-- > 0); 1459cb1b83e7SPeter Lieven 14601288844eSPaolo Bonzini if (task == NULL || task->status != SCSI_STATUS_GOOD) { 1461240125bcSZhu Lingshan error_setg(errp, "iSCSI: failed to send readcapacity10/16 command"); 14626d1f252dSPeter Lieven } else if (!iscsilun->block_size || 14636d1f252dSPeter Lieven iscsilun->block_size % BDRV_SECTOR_SIZE) { 14646d1f252dSPeter Lieven error_setg(errp, "iSCSI: the target returned an invalid " 14656d1f252dSPeter Lieven "block size of %d.", iscsilun->block_size); 14661288844eSPaolo Bonzini } 1467cb1b83e7SPeter Lieven if (task) { 1468cb1b83e7SPeter Lieven scsi_free_scsi_task(task); 1469cb1b83e7SPeter Lieven } 1470cb1b83e7SPeter Lieven } 1471cb1b83e7SPeter Lieven 147235cb1748SPaolo Bonzini static struct scsi_task *iscsi_do_inquiry(struct iscsi_context *iscsi, int lun, 147324d3bd67SPeter Lieven int evpd, int pc, void **inq, Error **errp) 147435cb1748SPaolo Bonzini { 1475f18a7cbbSPeter Lieven int full_size; 1476f18a7cbbSPeter Lieven struct scsi_task *task = NULL; 1477f18a7cbbSPeter Lieven task = iscsi_inquiry_sync(iscsi, lun, evpd, pc, 64); 1478f18a7cbbSPeter Lieven if (task == NULL || task->status != SCSI_STATUS_GOOD) { 1479f18a7cbbSPeter Lieven goto fail; 1480f18a7cbbSPeter Lieven } 1481f18a7cbbSPeter Lieven full_size = scsi_datain_getfullsize(task); 1482f18a7cbbSPeter Lieven if (full_size > task->datain.size) { 1483f18a7cbbSPeter Lieven scsi_free_scsi_task(task); 1484f18a7cbbSPeter Lieven 1485f18a7cbbSPeter Lieven /* we need more data for the full list */ 1486f18a7cbbSPeter Lieven task = iscsi_inquiry_sync(iscsi, lun, evpd, pc, full_size); 1487f18a7cbbSPeter Lieven if (task == NULL || task->status != SCSI_STATUS_GOOD) { 1488f18a7cbbSPeter Lieven goto fail; 1489f18a7cbbSPeter Lieven } 1490f18a7cbbSPeter Lieven } 1491f18a7cbbSPeter Lieven 149224d3bd67SPeter Lieven *inq = scsi_datain_unmarshall(task); 149324d3bd67SPeter Lieven if (*inq == NULL) { 149424d3bd67SPeter Lieven error_setg(errp, "iSCSI: failed to unmarshall inquiry datain blob"); 1495172fc4ddSMarkus Armbruster goto fail_with_err; 149624d3bd67SPeter Lieven } 149724d3bd67SPeter Lieven 1498f18a7cbbSPeter Lieven return task; 1499f18a7cbbSPeter Lieven 1500f18a7cbbSPeter Lieven fail: 1501f2917853SPaolo Bonzini error_setg(errp, "iSCSI: Inquiry command failed : %s", 1502f18a7cbbSPeter Lieven iscsi_get_error(iscsi)); 1503172fc4ddSMarkus Armbruster fail_with_err: 150424d3bd67SPeter Lieven if (task != NULL) { 1505f18a7cbbSPeter Lieven scsi_free_scsi_task(task); 1506f18a7cbbSPeter Lieven } 1507f18a7cbbSPeter Lieven return NULL; 1508f18a7cbbSPeter Lieven } 1509f18a7cbbSPeter Lieven 151080cf6257SStefan Hajnoczi static void iscsi_detach_aio_context(BlockDriverState *bs) 151180cf6257SStefan Hajnoczi { 151280cf6257SStefan Hajnoczi IscsiLun *iscsilun = bs->opaque; 151380cf6257SStefan Hajnoczi 1514dca21ef2SFam Zheng aio_set_fd_handler(iscsilun->aio_context, iscsi_get_fd(iscsilun->iscsi), 1515f6a51c84SStefan Hajnoczi false, NULL, NULL, NULL, NULL); 151680cf6257SStefan Hajnoczi iscsilun->events = 0; 151780cf6257SStefan Hajnoczi 151880cf6257SStefan Hajnoczi if (iscsilun->nop_timer) { 151980cf6257SStefan Hajnoczi timer_del(iscsilun->nop_timer); 152080cf6257SStefan Hajnoczi timer_free(iscsilun->nop_timer); 152180cf6257SStefan Hajnoczi iscsilun->nop_timer = NULL; 152280cf6257SStefan Hajnoczi } 152305b685fbSPeter Lieven if (iscsilun->event_timer) { 152405b685fbSPeter Lieven timer_del(iscsilun->event_timer); 152505b685fbSPeter Lieven timer_free(iscsilun->event_timer); 152605b685fbSPeter Lieven iscsilun->event_timer = NULL; 152705b685fbSPeter Lieven } 152880cf6257SStefan Hajnoczi } 152980cf6257SStefan Hajnoczi 153080cf6257SStefan Hajnoczi static void iscsi_attach_aio_context(BlockDriverState *bs, 153180cf6257SStefan Hajnoczi AioContext *new_context) 153280cf6257SStefan Hajnoczi { 153380cf6257SStefan Hajnoczi IscsiLun *iscsilun = bs->opaque; 153480cf6257SStefan Hajnoczi 153580cf6257SStefan Hajnoczi iscsilun->aio_context = new_context; 153680cf6257SStefan Hajnoczi iscsi_set_events(iscsilun); 153780cf6257SStefan Hajnoczi 153880cf6257SStefan Hajnoczi /* Set up a timer for sending out iSCSI NOPs */ 153980cf6257SStefan Hajnoczi iscsilun->nop_timer = aio_timer_new(iscsilun->aio_context, 154080cf6257SStefan Hajnoczi QEMU_CLOCK_REALTIME, SCALE_MS, 154180cf6257SStefan Hajnoczi iscsi_nop_timed_event, iscsilun); 154280cf6257SStefan Hajnoczi timer_mod(iscsilun->nop_timer, 154380cf6257SStefan Hajnoczi qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + NOP_INTERVAL); 154405b685fbSPeter Lieven 15455dd7a535SPeter Lieven /* Set up a timer for periodic calls to iscsi_set_events and to 15465dd7a535SPeter Lieven * scan for command timeout */ 154705b685fbSPeter Lieven iscsilun->event_timer = aio_timer_new(iscsilun->aio_context, 154805b685fbSPeter Lieven QEMU_CLOCK_REALTIME, SCALE_MS, 15495dd7a535SPeter Lieven iscsi_timed_check_events, iscsilun); 15505dd7a535SPeter Lieven timer_mod(iscsilun->event_timer, 15515dd7a535SPeter Lieven qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + EVENT_INTERVAL); 155280cf6257SStefan Hajnoczi } 155380cf6257SStefan Hajnoczi 15547191f208SPeter Lieven static void iscsi_modesense_sync(IscsiLun *iscsilun) 1555c1d4096bSFam Zheng { 1556c1d4096bSFam Zheng struct scsi_task *task; 1557c1d4096bSFam Zheng struct scsi_mode_sense *ms = NULL; 15587191f208SPeter Lieven iscsilun->write_protected = false; 1559752ce451SPeter Lieven iscsilun->dpofua = false; 1560c1d4096bSFam Zheng 1561c1d4096bSFam Zheng task = iscsi_modesense6_sync(iscsilun->iscsi, iscsilun->lun, 1562c1d4096bSFam Zheng 1, SCSI_MODESENSE_PC_CURRENT, 1563c1d4096bSFam Zheng 0x3F, 0, 255); 1564c1d4096bSFam Zheng if (task == NULL) { 1565c1d4096bSFam Zheng error_report("iSCSI: Failed to send MODE_SENSE(6) command: %s", 1566c1d4096bSFam Zheng iscsi_get_error(iscsilun->iscsi)); 1567c1d4096bSFam Zheng goto out; 1568c1d4096bSFam Zheng } 1569c1d4096bSFam Zheng 1570c1d4096bSFam Zheng if (task->status != SCSI_STATUS_GOOD) { 1571c1d4096bSFam Zheng error_report("iSCSI: Failed MODE_SENSE(6), LUN assumed writable"); 1572c1d4096bSFam Zheng goto out; 1573c1d4096bSFam Zheng } 1574c1d4096bSFam Zheng ms = scsi_datain_unmarshall(task); 1575c1d4096bSFam Zheng if (!ms) { 1576c1d4096bSFam Zheng error_report("iSCSI: Failed to unmarshall MODE_SENSE(6) data: %s", 1577c1d4096bSFam Zheng iscsi_get_error(iscsilun->iscsi)); 1578c1d4096bSFam Zheng goto out; 1579c1d4096bSFam Zheng } 15807191f208SPeter Lieven iscsilun->write_protected = ms->device_specific_parameter & 0x80; 1581752ce451SPeter Lieven iscsilun->dpofua = ms->device_specific_parameter & 0x10; 1582c1d4096bSFam Zheng 1583c1d4096bSFam Zheng out: 1584c1d4096bSFam Zheng if (task) { 1585c1d4096bSFam Zheng scsi_free_scsi_task(task); 1586c1d4096bSFam Zheng } 1587c1d4096bSFam Zheng } 1588c1d4096bSFam Zheng 158943171420SKevin Wolf static void iscsi_parse_iscsi_option(const char *target, QDict *options) 159043171420SKevin Wolf { 159143171420SKevin Wolf QemuOptsList *list; 159243171420SKevin Wolf QemuOpts *opts; 159381aa2a0fSKevin Wolf const char *user, *password, *password_secret, *initiator_name, 15941d560104SKevin Wolf *header_digest, *timeout; 159543171420SKevin Wolf 159643171420SKevin Wolf list = qemu_find_opts("iscsi"); 159743171420SKevin Wolf if (!list) { 159843171420SKevin Wolf return; 159943171420SKevin Wolf } 160043171420SKevin Wolf 160143171420SKevin Wolf opts = qemu_opts_find(list, target); 160243171420SKevin Wolf if (opts == NULL) { 160343171420SKevin Wolf opts = QTAILQ_FIRST(&list->head); 160443171420SKevin Wolf if (!opts) { 160543171420SKevin Wolf return; 160643171420SKevin Wolf } 160743171420SKevin Wolf } 160843171420SKevin Wolf 160943171420SKevin Wolf user = qemu_opt_get(opts, "user"); 161043171420SKevin Wolf if (user) { 161143171420SKevin Wolf qdict_set_default_str(options, "user", user); 161243171420SKevin Wolf } 161343171420SKevin Wolf 161443171420SKevin Wolf password = qemu_opt_get(opts, "password"); 161543171420SKevin Wolf if (password) { 161643171420SKevin Wolf qdict_set_default_str(options, "password", password); 161743171420SKevin Wolf } 161843171420SKevin Wolf 161943171420SKevin Wolf password_secret = qemu_opt_get(opts, "password-secret"); 162043171420SKevin Wolf if (password_secret) { 162143171420SKevin Wolf qdict_set_default_str(options, "password-secret", password_secret); 162243171420SKevin Wolf } 1623d4e79929SKevin Wolf 1624d4e79929SKevin Wolf initiator_name = qemu_opt_get(opts, "initiator-name"); 1625d4e79929SKevin Wolf if (initiator_name) { 1626d4e79929SKevin Wolf qdict_set_default_str(options, "initiator-name", initiator_name); 1627d4e79929SKevin Wolf } 162881aa2a0fSKevin Wolf 162981aa2a0fSKevin Wolf header_digest = qemu_opt_get(opts, "header-digest"); 163081aa2a0fSKevin Wolf if (header_digest) { 163131eb1202SKevin Wolf /* -iscsi takes upper case values, but QAPI only supports lower case 163231eb1202SKevin Wolf * enum constant names, so we have to convert here. */ 163331eb1202SKevin Wolf char *qapi_value = g_ascii_strdown(header_digest, -1); 163431eb1202SKevin Wolf qdict_set_default_str(options, "header-digest", qapi_value); 163531eb1202SKevin Wolf g_free(qapi_value); 163681aa2a0fSKevin Wolf } 16371d560104SKevin Wolf 16381d560104SKevin Wolf timeout = qemu_opt_get(opts, "timeout"); 16391d560104SKevin Wolf if (timeout) { 16401d560104SKevin Wolf qdict_set_default_str(options, "timeout", timeout); 16411d560104SKevin Wolf } 164243171420SKevin Wolf } 164343171420SKevin Wolf 1644c589b249SRonnie Sahlberg /* 1645c589b249SRonnie Sahlberg * We support iscsi url's on the form 1646c589b249SRonnie Sahlberg * iscsi://[<username>%<password>@]<host>[:<port>]/<targetname>/<lun> 1647c589b249SRonnie Sahlberg */ 1648d5895fcbSKevin Wolf static void iscsi_parse_filename(const char *filename, QDict *options, 1649d5895fcbSKevin Wolf Error **errp) 1650d5895fcbSKevin Wolf { 1651d5895fcbSKevin Wolf struct iscsi_url *iscsi_url; 1652d5895fcbSKevin Wolf const char *transport_name; 1653d5895fcbSKevin Wolf char *lun_str; 1654d5895fcbSKevin Wolf 1655d5895fcbSKevin Wolf iscsi_url = iscsi_parse_full_url(NULL, filename); 1656d5895fcbSKevin Wolf if (iscsi_url == NULL) { 1657d5895fcbSKevin Wolf error_setg(errp, "Failed to parse URL : %s", filename); 1658d5895fcbSKevin Wolf return; 1659d5895fcbSKevin Wolf } 1660d5895fcbSKevin Wolf 1661d5895fcbSKevin Wolf #if LIBISCSI_API_VERSION >= (20160603) 1662d5895fcbSKevin Wolf switch (iscsi_url->transport) { 1663d5895fcbSKevin Wolf case TCP_TRANSPORT: 1664d5895fcbSKevin Wolf transport_name = "tcp"; 1665d5895fcbSKevin Wolf break; 1666d5895fcbSKevin Wolf case ISER_TRANSPORT: 1667d5895fcbSKevin Wolf transport_name = "iser"; 1668d5895fcbSKevin Wolf break; 1669d5895fcbSKevin Wolf default: 1670d5895fcbSKevin Wolf error_setg(errp, "Unknown transport type (%d)", 1671d5895fcbSKevin Wolf iscsi_url->transport); 1672d5895fcbSKevin Wolf return; 1673d5895fcbSKevin Wolf } 1674d5895fcbSKevin Wolf #else 1675d5895fcbSKevin Wolf transport_name = "tcp"; 1676d5895fcbSKevin Wolf #endif 1677d5895fcbSKevin Wolf 1678d5895fcbSKevin Wolf qdict_set_default_str(options, "transport", transport_name); 1679d5895fcbSKevin Wolf qdict_set_default_str(options, "portal", iscsi_url->portal); 1680d5895fcbSKevin Wolf qdict_set_default_str(options, "target", iscsi_url->target); 1681d5895fcbSKevin Wolf 1682d5895fcbSKevin Wolf lun_str = g_strdup_printf("%d", iscsi_url->lun); 1683d5895fcbSKevin Wolf qdict_set_default_str(options, "lun", lun_str); 1684d5895fcbSKevin Wolf g_free(lun_str); 1685d5895fcbSKevin Wolf 168643171420SKevin Wolf /* User/password from -iscsi take precedence over those from the URL */ 168743171420SKevin Wolf iscsi_parse_iscsi_option(iscsi_url->target, options); 168843171420SKevin Wolf 1689d5895fcbSKevin Wolf if (iscsi_url->user[0] != '\0') { 1690d5895fcbSKevin Wolf qdict_set_default_str(options, "user", iscsi_url->user); 1691d5895fcbSKevin Wolf qdict_set_default_str(options, "password", iscsi_url->passwd); 1692d5895fcbSKevin Wolf } 1693d5895fcbSKevin Wolf 1694d5895fcbSKevin Wolf iscsi_destroy_url(iscsi_url); 1695d5895fcbSKevin Wolf } 1696d5895fcbSKevin Wolf 1697d5895fcbSKevin Wolf static QemuOptsList runtime_opts = { 1698d5895fcbSKevin Wolf .name = "iscsi", 1699d5895fcbSKevin Wolf .head = QTAILQ_HEAD_INITIALIZER(runtime_opts.head), 1700d5895fcbSKevin Wolf .desc = { 1701d5895fcbSKevin Wolf { 1702d5895fcbSKevin Wolf .name = "transport", 1703d5895fcbSKevin Wolf .type = QEMU_OPT_STRING, 1704d5895fcbSKevin Wolf }, 1705d5895fcbSKevin Wolf { 1706d5895fcbSKevin Wolf .name = "portal", 1707d5895fcbSKevin Wolf .type = QEMU_OPT_STRING, 1708d5895fcbSKevin Wolf }, 1709d5895fcbSKevin Wolf { 1710d5895fcbSKevin Wolf .name = "target", 1711d5895fcbSKevin Wolf .type = QEMU_OPT_STRING, 1712d5895fcbSKevin Wolf }, 1713d5895fcbSKevin Wolf { 1714d5895fcbSKevin Wolf .name = "user", 1715d5895fcbSKevin Wolf .type = QEMU_OPT_STRING, 1716d5895fcbSKevin Wolf }, 1717d5895fcbSKevin Wolf { 1718d5895fcbSKevin Wolf .name = "password", 1719d5895fcbSKevin Wolf .type = QEMU_OPT_STRING, 1720d5895fcbSKevin Wolf }, 1721d5895fcbSKevin Wolf { 172243171420SKevin Wolf .name = "password-secret", 172343171420SKevin Wolf .type = QEMU_OPT_STRING, 172443171420SKevin Wolf }, 172543171420SKevin Wolf { 1726d5895fcbSKevin Wolf .name = "lun", 1727d5895fcbSKevin Wolf .type = QEMU_OPT_NUMBER, 1728d5895fcbSKevin Wolf }, 1729d4e79929SKevin Wolf { 1730d4e79929SKevin Wolf .name = "initiator-name", 1731d4e79929SKevin Wolf .type = QEMU_OPT_STRING, 1732d4e79929SKevin Wolf }, 173381aa2a0fSKevin Wolf { 173481aa2a0fSKevin Wolf .name = "header-digest", 173581aa2a0fSKevin Wolf .type = QEMU_OPT_STRING, 173681aa2a0fSKevin Wolf }, 17371d560104SKevin Wolf { 17381d560104SKevin Wolf .name = "timeout", 17391d560104SKevin Wolf .type = QEMU_OPT_NUMBER, 17401d560104SKevin Wolf }, 1741d5895fcbSKevin Wolf { /* end of list */ } 1742d5895fcbSKevin Wolf }, 1743d5895fcbSKevin Wolf }; 1744d5895fcbSKevin Wolf 1745cc9743c2SFam Zheng static void iscsi_save_designator(IscsiLun *lun, 1746cc9743c2SFam Zheng struct scsi_inquiry_device_identification *inq_di) 1747cc9743c2SFam Zheng { 1748cc9743c2SFam Zheng struct scsi_inquiry_device_designator *desig, *copy = NULL; 1749cc9743c2SFam Zheng 1750cc9743c2SFam Zheng for (desig = inq_di->designators; desig; desig = desig->next) { 1751cc9743c2SFam Zheng if (desig->association || 1752cc9743c2SFam Zheng desig->designator_type > SCSI_DESIGNATOR_TYPE_NAA) { 1753cc9743c2SFam Zheng continue; 1754cc9743c2SFam Zheng } 1755cc9743c2SFam Zheng /* NAA works better than T10 vendor ID based designator. */ 1756cc9743c2SFam Zheng if (!copy || copy->designator_type < desig->designator_type) { 1757cc9743c2SFam Zheng copy = desig; 1758cc9743c2SFam Zheng } 1759cc9743c2SFam Zheng } 1760cc9743c2SFam Zheng if (copy) { 1761cc9743c2SFam Zheng lun->dd = g_new(struct scsi_inquiry_device_designator, 1); 1762cc9743c2SFam Zheng *lun->dd = *copy; 1763cc9743c2SFam Zheng lun->dd->next = NULL; 1764cc9743c2SFam Zheng lun->dd->designator = g_malloc(copy->designator_length); 1765cc9743c2SFam Zheng memcpy(lun->dd->designator, copy->designator, copy->designator_length); 1766cc9743c2SFam Zheng } 1767cc9743c2SFam Zheng } 1768cc9743c2SFam Zheng 1769015a1036SMax Reitz static int iscsi_open(BlockDriverState *bs, QDict *options, int flags, 1770015a1036SMax Reitz Error **errp) 1771c589b249SRonnie Sahlberg { 1772c589b249SRonnie Sahlberg IscsiLun *iscsilun = bs->opaque; 1773c589b249SRonnie Sahlberg struct iscsi_context *iscsi = NULL; 1774e829b0bbSPeter Lieven struct scsi_task *task = NULL; 1775e829b0bbSPeter Lieven struct scsi_inquiry_standard *inq = NULL; 177624d3bd67SPeter Lieven struct scsi_inquiry_supported_pages *inq_vpd; 1777f9dadc98SRonnie Sahlberg char *initiator_name = NULL; 177860beb341SKevin Wolf QemuOpts *opts; 177960beb341SKevin Wolf Error *local_err = NULL; 1780deadbb8eSMarkus Armbruster const char *transport_name, *portal, *target; 1781d5895fcbSKevin Wolf #if LIBISCSI_API_VERSION >= (20160603) 1782d5895fcbSKevin Wolf enum iscsi_transport_type transport; 1783d5895fcbSKevin Wolf #endif 1784d5895fcbSKevin Wolf int i, ret = 0, timeout = 0, lun; 1785c589b249SRonnie Sahlberg 178687ea75d5SPeter Crosthwaite opts = qemu_opts_create(&runtime_opts, NULL, 0, &error_abort); 178760beb341SKevin Wolf qemu_opts_absorb_qdict(opts, options, &local_err); 178884d18f06SMarkus Armbruster if (local_err) { 1789f2917853SPaolo Bonzini error_propagate(errp, local_err); 179060beb341SKevin Wolf ret = -EINVAL; 179160beb341SKevin Wolf goto out; 179260beb341SKevin Wolf } 179360beb341SKevin Wolf 1794d5895fcbSKevin Wolf transport_name = qemu_opt_get(opts, "transport"); 1795d5895fcbSKevin Wolf portal = qemu_opt_get(opts, "portal"); 1796d5895fcbSKevin Wolf target = qemu_opt_get(opts, "target"); 1797d5895fcbSKevin Wolf lun = qemu_opt_get_number(opts, "lun", 0); 179860beb341SKevin Wolf 1799d5895fcbSKevin Wolf if (!transport_name || !portal || !target) { 1800d5895fcbSKevin Wolf error_setg(errp, "Need all of transport, portal and target options"); 1801d5895fcbSKevin Wolf ret = -EINVAL; 1802d5895fcbSKevin Wolf goto out; 1803d5895fcbSKevin Wolf } 1804d5895fcbSKevin Wolf 1805d5895fcbSKevin Wolf if (!strcmp(transport_name, "tcp")) { 1806d5895fcbSKevin Wolf #if LIBISCSI_API_VERSION >= (20160603) 1807d5895fcbSKevin Wolf transport = TCP_TRANSPORT; 1808d5895fcbSKevin Wolf } else if (!strcmp(transport_name, "iser")) { 1809d5895fcbSKevin Wolf transport = ISER_TRANSPORT; 1810d5895fcbSKevin Wolf #else 1811d5895fcbSKevin Wolf /* TCP is what older libiscsi versions always use */ 1812d5895fcbSKevin Wolf #endif 1813d5895fcbSKevin Wolf } else { 1814d5895fcbSKevin Wolf error_setg(errp, "Unknown transport: %s", transport_name); 1815c589b249SRonnie Sahlberg ret = -EINVAL; 1816b93c94f7SPaolo Bonzini goto out; 1817c589b249SRonnie Sahlberg } 1818c589b249SRonnie Sahlberg 1819f9dadc98SRonnie Sahlberg memset(iscsilun, 0, sizeof(IscsiLun)); 1820f9dadc98SRonnie Sahlberg 1821d4e79929SKevin Wolf initiator_name = get_initiator_name(opts); 1822f9dadc98SRonnie Sahlberg 1823f9dadc98SRonnie Sahlberg iscsi = iscsi_create_context(initiator_name); 1824f9dadc98SRonnie Sahlberg if (iscsi == NULL) { 1825f2917853SPaolo Bonzini error_setg(errp, "iSCSI: Failed to create iSCSI context."); 1826f9dadc98SRonnie Sahlberg ret = -ENOMEM; 1827b93c94f7SPaolo Bonzini goto out; 1828f9dadc98SRonnie Sahlberg } 1829e0ae4987SRoy Shterman #if LIBISCSI_API_VERSION >= (20160603) 1830d5895fcbSKevin Wolf if (iscsi_init_transport(iscsi, transport)) { 1831e0ae4987SRoy Shterman error_setg(errp, ("Error initializing transport.")); 1832e0ae4987SRoy Shterman ret = -EINVAL; 1833e0ae4987SRoy Shterman goto out; 1834e0ae4987SRoy Shterman } 1835e0ae4987SRoy Shterman #endif 1836d5895fcbSKevin Wolf if (iscsi_set_targetname(iscsi, target)) { 1837f2917853SPaolo Bonzini error_setg(errp, "iSCSI: Failed to set target name."); 1838c589b249SRonnie Sahlberg ret = -EINVAL; 1839b93c94f7SPaolo Bonzini goto out; 1840c589b249SRonnie Sahlberg } 1841c589b249SRonnie Sahlberg 1842f9dadc98SRonnie Sahlberg /* check if we got CHAP username/password via the options */ 184343171420SKevin Wolf apply_chap(iscsi, opts, &local_err); 1844f2917853SPaolo Bonzini if (local_err != NULL) { 1845f2917853SPaolo Bonzini error_propagate(errp, local_err); 1846f9dadc98SRonnie Sahlberg ret = -EINVAL; 1847b93c94f7SPaolo Bonzini goto out; 1848f9dadc98SRonnie Sahlberg } 1849f9dadc98SRonnie Sahlberg 1850c589b249SRonnie Sahlberg if (iscsi_set_session_type(iscsi, ISCSI_SESSION_NORMAL) != 0) { 1851f2917853SPaolo Bonzini error_setg(errp, "iSCSI: Failed to set session type to normal."); 1852c589b249SRonnie Sahlberg ret = -EINVAL; 1853b93c94f7SPaolo Bonzini goto out; 1854c589b249SRonnie Sahlberg } 1855c589b249SRonnie Sahlberg 1856f9dadc98SRonnie Sahlberg /* check if we got HEADER_DIGEST via the options */ 185781aa2a0fSKevin Wolf apply_header_digest(iscsi, opts, &local_err); 1858f2917853SPaolo Bonzini if (local_err != NULL) { 1859f2917853SPaolo Bonzini error_propagate(errp, local_err); 1860f2917853SPaolo Bonzini ret = -EINVAL; 1861f2917853SPaolo Bonzini goto out; 1862f2917853SPaolo Bonzini } 1863f9dadc98SRonnie Sahlberg 18649049736eSPeter Lieven /* timeout handling is broken in libiscsi before 1.15.0 */ 18651d560104SKevin Wolf timeout = qemu_opt_get_number(opts, "timeout", 0); 1866583ec22eSRoy Shterman #if LIBISCSI_API_VERSION >= 20150621 18679049736eSPeter Lieven iscsi_set_timeout(iscsi, timeout); 18689049736eSPeter Lieven #else 18699049736eSPeter Lieven if (timeout) { 18705197f445SMarkus Armbruster warn_report("iSCSI: ignoring timeout value for libiscsi <1.15.0"); 18719049736eSPeter Lieven } 18729049736eSPeter Lieven #endif 18735dd7a535SPeter Lieven 1874d5895fcbSKevin Wolf if (iscsi_full_connect_sync(iscsi, portal, lun) != 0) { 1875f2917853SPaolo Bonzini error_setg(errp, "iSCSI: Failed to connect to LUN : %s", 1876c589b249SRonnie Sahlberg iscsi_get_error(iscsi)); 1877c589b249SRonnie Sahlberg ret = -EINVAL; 1878b93c94f7SPaolo Bonzini goto out; 1879c589b249SRonnie Sahlberg } 1880622695a4SRonnie Sahlberg 1881e829b0bbSPeter Lieven iscsilun->iscsi = iscsi; 188280cf6257SStefan Hajnoczi iscsilun->aio_context = bdrv_get_aio_context(bs); 1883d5895fcbSKevin Wolf iscsilun->lun = lun; 1884fa6252b0SPaolo Bonzini iscsilun->has_write_same = true; 1885e829b0bbSPeter Lieven 188624d3bd67SPeter Lieven task = iscsi_do_inquiry(iscsilun->iscsi, iscsilun->lun, 0, 0, 188724d3bd67SPeter Lieven (void **) &inq, errp); 188824d3bd67SPeter Lieven if (task == NULL) { 188924d3bd67SPeter Lieven ret = -EINVAL; 189024d3bd67SPeter Lieven goto out; 189124d3bd67SPeter Lieven } 189224d3bd67SPeter Lieven iscsilun->type = inq->periperal_device_type; 189324d3bd67SPeter Lieven scsi_free_scsi_task(task); 189424d3bd67SPeter Lieven task = NULL; 189524d3bd67SPeter Lieven 18967191f208SPeter Lieven iscsi_modesense_sync(iscsilun); 18974df863f3SEric Blake if (iscsilun->dpofua) { 18984df863f3SEric Blake bs->supported_write_flags = BDRV_REQ_FUA; 18994df863f3SEric Blake } 19007191f208SPeter Lieven 1901c1d4096bSFam Zheng /* Check the write protect flag of the LUN if we want to write */ 1902c1d4096bSFam Zheng if (iscsilun->type == TYPE_DISK && (flags & BDRV_O_RDWR) && 190343ae8fb1SFam Zheng iscsilun->write_protected) { 19048f3bf50dSKevin Wolf ret = bdrv_apply_auto_read_only(bs, "LUN is write protected", errp); 19058f3bf50dSKevin Wolf if (ret < 0) { 1906c1d4096bSFam Zheng goto out; 1907c1d4096bSFam Zheng } 19088f3bf50dSKevin Wolf flags &= ~BDRV_O_RDWR; 19098f3bf50dSKevin Wolf } 1910c1d4096bSFam Zheng 1911f2917853SPaolo Bonzini iscsi_readcapacity_sync(iscsilun, &local_err); 1912f2917853SPaolo Bonzini if (local_err != NULL) { 1913f2917853SPaolo Bonzini error_propagate(errp, local_err); 1914cd82b6fbSFam Zheng ret = -EINVAL; 1915e829b0bbSPeter Lieven goto out; 1916e829b0bbSPeter Lieven } 19170777b5ddSPeter Lieven bs->total_sectors = sector_lun2qemu(iscsilun->num_blocks, iscsilun); 1918e829b0bbSPeter Lieven 1919f47c3f5aSKevin Wolf /* We don't have any emulation for devices other than disks and CD-ROMs, so 1920f47c3f5aSKevin Wolf * this must be sg ioctl compatible. We force it to be sg, otherwise qemu 1921f47c3f5aSKevin Wolf * will try to read from the device to guess the image format. 1922622695a4SRonnie Sahlberg */ 1923f47c3f5aSKevin Wolf if (iscsilun->type != TYPE_DISK && iscsilun->type != TYPE_ROM) { 192454115412SEric Blake bs->sg = true; 1925622695a4SRonnie Sahlberg } 1926622695a4SRonnie Sahlberg 1927f18a7cbbSPeter Lieven task = iscsi_do_inquiry(iscsilun->iscsi, iscsilun->lun, 1, 192824d3bd67SPeter Lieven SCSI_INQUIRY_PAGECODE_SUPPORTED_VPD_PAGES, 192924d3bd67SPeter Lieven (void **) &inq_vpd, errp); 1930f18a7cbbSPeter Lieven if (task == NULL) { 1931f18a7cbbSPeter Lieven ret = -EINVAL; 1932f18a7cbbSPeter Lieven goto out; 1933f18a7cbbSPeter Lieven } 193424d3bd67SPeter Lieven for (i = 0; i < inq_vpd->num_pages; i++) { 193524d3bd67SPeter Lieven struct scsi_task *inq_task; 193624d3bd67SPeter Lieven struct scsi_inquiry_logical_block_provisioning *inq_lbp; 193724d3bd67SPeter Lieven struct scsi_inquiry_block_limits *inq_bl; 1938cc9743c2SFam Zheng struct scsi_inquiry_device_identification *inq_di; 193924d3bd67SPeter Lieven switch (inq_vpd->pages[i]) { 194024d3bd67SPeter Lieven case SCSI_INQUIRY_PAGECODE_LOGICAL_BLOCK_PROVISIONING: 194124d3bd67SPeter Lieven inq_task = iscsi_do_inquiry(iscsilun->iscsi, iscsilun->lun, 1, 194224d3bd67SPeter Lieven SCSI_INQUIRY_PAGECODE_LOGICAL_BLOCK_PROVISIONING, 194324d3bd67SPeter Lieven (void **) &inq_lbp, errp); 194424d3bd67SPeter Lieven if (inq_task == NULL) { 1945f18a7cbbSPeter Lieven ret = -EINVAL; 1946f18a7cbbSPeter Lieven goto out; 1947f18a7cbbSPeter Lieven } 1948f18a7cbbSPeter Lieven memcpy(&iscsilun->lbp, inq_lbp, 1949f18a7cbbSPeter Lieven sizeof(struct scsi_inquiry_logical_block_provisioning)); 195024d3bd67SPeter Lieven scsi_free_scsi_task(inq_task); 195124d3bd67SPeter Lieven break; 195224d3bd67SPeter Lieven case SCSI_INQUIRY_PAGECODE_BLOCK_LIMITS: 195324d3bd67SPeter Lieven inq_task = iscsi_do_inquiry(iscsilun->iscsi, iscsilun->lun, 1, 195424d3bd67SPeter Lieven SCSI_INQUIRY_PAGECODE_BLOCK_LIMITS, 195524d3bd67SPeter Lieven (void **) &inq_bl, errp); 195624d3bd67SPeter Lieven if (inq_task == NULL) { 1957f18a7cbbSPeter Lieven ret = -EINVAL; 1958f18a7cbbSPeter Lieven goto out; 1959f18a7cbbSPeter Lieven } 1960f18a7cbbSPeter Lieven memcpy(&iscsilun->bl, inq_bl, 1961f18a7cbbSPeter Lieven sizeof(struct scsi_inquiry_block_limits)); 196224d3bd67SPeter Lieven scsi_free_scsi_task(inq_task); 196324d3bd67SPeter Lieven break; 1964cc9743c2SFam Zheng case SCSI_INQUIRY_PAGECODE_DEVICE_IDENTIFICATION: 1965cc9743c2SFam Zheng inq_task = iscsi_do_inquiry(iscsilun->iscsi, iscsilun->lun, 1, 1966cc9743c2SFam Zheng SCSI_INQUIRY_PAGECODE_DEVICE_IDENTIFICATION, 1967cc9743c2SFam Zheng (void **) &inq_di, errp); 1968cc9743c2SFam Zheng if (inq_task == NULL) { 1969cc9743c2SFam Zheng ret = -EINVAL; 1970cc9743c2SFam Zheng goto out; 1971cc9743c2SFam Zheng } 1972cc9743c2SFam Zheng iscsi_save_designator(iscsilun, inq_di); 1973cc9743c2SFam Zheng scsi_free_scsi_task(inq_task); 1974cc9743c2SFam Zheng break; 197524d3bd67SPeter Lieven default: 197624d3bd67SPeter Lieven break; 197724d3bd67SPeter Lieven } 197824d3bd67SPeter Lieven } 1979f18a7cbbSPeter Lieven scsi_free_scsi_task(task); 1980f18a7cbbSPeter Lieven task = NULL; 1981f18a7cbbSPeter Lieven 1982d045c466SPaolo Bonzini qemu_mutex_init(&iscsilun->mutex); 198380cf6257SStefan Hajnoczi iscsi_attach_aio_context(bs, iscsilun->aio_context); 19845b5d34ecSPeter Lieven 1985b03c3805SPeter Lieven /* Guess the internal cluster (page) size of the iscsi target by the means 1986b03c3805SPeter Lieven * of opt_unmap_gran. Transfer the unmap granularity only if it has a 1987b03c3805SPeter Lieven * reasonable size */ 19883d2acaa3SPeter Lieven if (iscsilun->bl.opt_unmap_gran * iscsilun->block_size >= 4 * 1024 && 1989b03c3805SPeter Lieven iscsilun->bl.opt_unmap_gran * iscsilun->block_size <= 16 * 1024 * 1024) { 1990ba059e7bSEric Blake iscsilun->cluster_size = iscsilun->bl.opt_unmap_gran * 1991ba059e7bSEric Blake iscsilun->block_size; 19929eac3622SPeter Lieven if (iscsilun->lbprz) { 1993e1123a3bSPeter Lieven ret = iscsi_allocmap_init(iscsilun, bs->open_flags); 1994b03c3805SPeter Lieven } 1995b03c3805SPeter Lieven } 1996b03c3805SPeter Lieven 1997e24d813bSEric Blake if (iscsilun->lbprz && iscsilun->lbp.lbpws) { 1998e24d813bSEric Blake bs->supported_zero_flags = BDRV_REQ_MAY_UNMAP; 1999e24d813bSEric Blake } 2000e24d813bSEric Blake 2001b93c94f7SPaolo Bonzini out: 200260beb341SKevin Wolf qemu_opts_del(opts); 2003f9dadc98SRonnie Sahlberg g_free(initiator_name); 2004e829b0bbSPeter Lieven if (task != NULL) { 2005e829b0bbSPeter Lieven scsi_free_scsi_task(task); 2006e829b0bbSPeter Lieven } 2007b93c94f7SPaolo Bonzini 2008b93c94f7SPaolo Bonzini if (ret) { 2009c589b249SRonnie Sahlberg if (iscsi != NULL) { 201020474e9aSPeter Lieven if (iscsi_is_logged_in(iscsi)) { 201120474e9aSPeter Lieven iscsi_logout_sync(iscsi); 201220474e9aSPeter Lieven } 2013c589b249SRonnie Sahlberg iscsi_destroy_context(iscsi); 2014c589b249SRonnie Sahlberg } 2015c589b249SRonnie Sahlberg memset(iscsilun, 0, sizeof(IscsiLun)); 2016b93c94f7SPaolo Bonzini } 2017deadbb8eSMarkus Armbruster 2018c589b249SRonnie Sahlberg return ret; 2019c589b249SRonnie Sahlberg } 2020c589b249SRonnie Sahlberg 2021c589b249SRonnie Sahlberg static void iscsi_close(BlockDriverState *bs) 2022c589b249SRonnie Sahlberg { 2023c589b249SRonnie Sahlberg IscsiLun *iscsilun = bs->opaque; 2024c589b249SRonnie Sahlberg struct iscsi_context *iscsi = iscsilun->iscsi; 2025c589b249SRonnie Sahlberg 202680cf6257SStefan Hajnoczi iscsi_detach_aio_context(bs); 202720474e9aSPeter Lieven if (iscsi_is_logged_in(iscsi)) { 202820474e9aSPeter Lieven iscsi_logout_sync(iscsi); 202920474e9aSPeter Lieven } 2030c589b249SRonnie Sahlberg iscsi_destroy_context(iscsi); 2031cc9743c2SFam Zheng if (iscsilun->dd) { 2032cc9743c2SFam Zheng g_free(iscsilun->dd->designator); 2033cc9743c2SFam Zheng g_free(iscsilun->dd); 2034cc9743c2SFam Zheng } 2035d4cd9615SPeter Lieven g_free(iscsilun->zeroblock); 2036e1123a3bSPeter Lieven iscsi_allocmap_free(iscsilun); 2037d045c466SPaolo Bonzini qemu_mutex_destroy(&iscsilun->mutex); 2038c589b249SRonnie Sahlberg memset(iscsilun, 0, sizeof(IscsiLun)); 2039c589b249SRonnie Sahlberg } 2040c589b249SRonnie Sahlberg 20413baca891SKevin Wolf static void iscsi_refresh_limits(BlockDriverState *bs, Error **errp) 2042d34682cdSKevin Wolf { 2043d34682cdSKevin Wolf /* We don't actually refresh here, but just return data queried in 2044d34682cdSKevin Wolf * iscsi_open(): iscsi targets don't change their limits. */ 204552f6fa14SPeter Lieven 204652f6fa14SPeter Lieven IscsiLun *iscsilun = bs->opaque; 20475def6b80SEric Blake uint64_t max_xfer_len = iscsilun->use_16_for_rw ? 0xffffffff : 0xffff; 204895eaa785SEric Blake unsigned int block_size = MAX(BDRV_SECTOR_SIZE, iscsilun->block_size); 204952f6fa14SPeter Lieven 205095eaa785SEric Blake assert(iscsilun->block_size >= BDRV_SECTOR_SIZE || bs->sg); 205195eaa785SEric Blake 205295eaa785SEric Blake bs->bl.request_alignment = block_size; 2053c8b3b998SEric Blake 205452f6fa14SPeter Lieven if (iscsilun->bl.max_xfer_len) { 205552f6fa14SPeter Lieven max_xfer_len = MIN(max_xfer_len, iscsilun->bl.max_xfer_len); 205652f6fa14SPeter Lieven } 205752f6fa14SPeter Lieven 205895eaa785SEric Blake if (max_xfer_len * block_size < INT_MAX) { 20595def6b80SEric Blake bs->bl.max_transfer = max_xfer_len * iscsilun->block_size; 20605def6b80SEric Blake } 206152f6fa14SPeter Lieven 2062c97ca29dSPaolo Bonzini if (iscsilun->lbp.lbpu) { 206395eaa785SEric Blake if (iscsilun->bl.max_unmap < 0xffffffff / block_size) { 2064b9f7855aSEric Blake bs->bl.max_pdiscard = 2065b9f7855aSEric Blake iscsilun->bl.max_unmap * iscsilun->block_size; 2066d34682cdSKevin Wolf } 2067b9f7855aSEric Blake bs->bl.pdiscard_alignment = 2068b9f7855aSEric Blake iscsilun->bl.opt_unmap_gran * iscsilun->block_size; 20698b184744SEric Blake } else { 2070b9f7855aSEric Blake bs->bl.pdiscard_alignment = iscsilun->block_size; 2071c97ca29dSPaolo Bonzini } 2072d34682cdSKevin Wolf 207395eaa785SEric Blake if (iscsilun->bl.max_ws_len < 0xffffffff / block_size) { 2074cf081fcaSEric Blake bs->bl.max_pwrite_zeroes = 2075cf081fcaSEric Blake iscsilun->bl.max_ws_len * iscsilun->block_size; 2076d34682cdSKevin Wolf } 2077c97ca29dSPaolo Bonzini if (iscsilun->lbp.lbpws) { 2078cf081fcaSEric Blake bs->bl.pwrite_zeroes_alignment = 2079cf081fcaSEric Blake iscsilun->bl.opt_unmap_gran * iscsilun->block_size; 20808b184744SEric Blake } else { 2081cf081fcaSEric Blake bs->bl.pwrite_zeroes_alignment = iscsilun->block_size; 20825d259fc7SPeter Lieven } 20835def6b80SEric Blake if (iscsilun->bl.opt_xfer_len && 208495eaa785SEric Blake iscsilun->bl.opt_xfer_len < INT_MAX / block_size) { 20855def6b80SEric Blake bs->bl.opt_transfer = pow2floor(iscsilun->bl.opt_xfer_len * 20865def6b80SEric Blake iscsilun->block_size); 20875def6b80SEric Blake } 2088e9f526abSAnthony Liguori } 2089d34682cdSKevin Wolf 209043ae8fb1SFam Zheng /* Note that this will not re-establish a connection with an iSCSI target - it 209143ae8fb1SFam Zheng * is effectively a NOP. */ 2092dc6afb99SJeff Cody static int iscsi_reopen_prepare(BDRVReopenState *state, 2093dc6afb99SJeff Cody BlockReopenQueue *queue, Error **errp) 2094dc6afb99SJeff Cody { 209543ae8fb1SFam Zheng IscsiLun *iscsilun = state->bs->opaque; 209643ae8fb1SFam Zheng 209743ae8fb1SFam Zheng if (state->flags & BDRV_O_RDWR && iscsilun->write_protected) { 209843ae8fb1SFam Zheng error_setg(errp, "Cannot open a write protected LUN as read-write"); 209943ae8fb1SFam Zheng return -EACCES; 210043ae8fb1SFam Zheng } 2101d34682cdSKevin Wolf return 0; 2102d34682cdSKevin Wolf } 2103d34682cdSKevin Wolf 2104e1123a3bSPeter Lieven static void iscsi_reopen_commit(BDRVReopenState *reopen_state) 2105e1123a3bSPeter Lieven { 2106e1123a3bSPeter Lieven IscsiLun *iscsilun = reopen_state->bs->opaque; 2107e1123a3bSPeter Lieven 2108e1123a3bSPeter Lieven /* the cache.direct status might have changed */ 2109e1123a3bSPeter Lieven if (iscsilun->allocmap != NULL) { 2110e1123a3bSPeter Lieven iscsi_allocmap_init(iscsilun, reopen_state->flags); 2111e1123a3bSPeter Lieven } 2112e1123a3bSPeter Lieven } 2113e1123a3bSPeter Lieven 2114061ca8a3SKevin Wolf static int coroutine_fn iscsi_co_truncate(BlockDriverState *bs, int64_t offset, 21158243ccb7SMax Reitz PreallocMode prealloc, Error **errp) 2116cb1b83e7SPeter Lieven { 2117cb1b83e7SPeter Lieven IscsiLun *iscsilun = bs->opaque; 2118f2917853SPaolo Bonzini Error *local_err = NULL; 2119cb1b83e7SPeter Lieven 21208243ccb7SMax Reitz if (prealloc != PREALLOC_MODE_OFF) { 21218243ccb7SMax Reitz error_setg(errp, "Unsupported preallocation mode '%s'", 2122977c736fSMarkus Armbruster PreallocMode_str(prealloc)); 21238243ccb7SMax Reitz return -ENOTSUP; 21248243ccb7SMax Reitz } 21258243ccb7SMax Reitz 2126cb1b83e7SPeter Lieven if (iscsilun->type != TYPE_DISK) { 2127f59adb32SMax Reitz error_setg(errp, "Cannot resize non-disk iSCSI devices"); 2128cb1b83e7SPeter Lieven return -ENOTSUP; 2129cb1b83e7SPeter Lieven } 2130cb1b83e7SPeter Lieven 2131f2917853SPaolo Bonzini iscsi_readcapacity_sync(iscsilun, &local_err); 2132f2917853SPaolo Bonzini if (local_err != NULL) { 21334bff28b8SMax Reitz error_propagate(errp, local_err); 2134f2917853SPaolo Bonzini return -EIO; 2135cb1b83e7SPeter Lieven } 2136cb1b83e7SPeter Lieven 2137cb1b83e7SPeter Lieven if (offset > iscsi_getlength(bs)) { 2138f59adb32SMax Reitz error_setg(errp, "Cannot grow iSCSI devices"); 2139cb1b83e7SPeter Lieven return -EINVAL; 2140cb1b83e7SPeter Lieven } 2141cb1b83e7SPeter Lieven 2142e1123a3bSPeter Lieven if (iscsilun->allocmap != NULL) { 2143e1123a3bSPeter Lieven iscsi_allocmap_init(iscsilun, bs->open_flags); 2144b03c3805SPeter Lieven } 2145b03c3805SPeter Lieven 2146cb1b83e7SPeter Lieven return 0; 2147cb1b83e7SPeter Lieven } 2148cb1b83e7SPeter Lieven 2149efc75e2aSStefan Hajnoczi static int coroutine_fn iscsi_co_create_opts(const char *filename, QemuOpts *opts, 2150efc75e2aSStefan Hajnoczi Error **errp) 2151de8864e5SPeter Lieven { 2152de8864e5SPeter Lieven int ret = 0; 2153de8864e5SPeter Lieven int64_t total_size = 0; 215413c91cb7SFam Zheng BlockDriverState *bs; 2155de8864e5SPeter Lieven IscsiLun *iscsilun = NULL; 215660beb341SKevin Wolf QDict *bs_options; 21572ec9a782SFam Zheng Error *local_err = NULL; 2158de8864e5SPeter Lieven 2159e4e9986bSMarkus Armbruster bs = bdrv_new(); 2160de8864e5SPeter Lieven 2161de8864e5SPeter Lieven /* Read out options */ 2162c2eb918eSHu Tao total_size = DIV_ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0), 2163c2eb918eSHu Tao BDRV_SECTOR_SIZE); 21645839e53bSMarkus Armbruster bs->opaque = g_new0(struct IscsiLun, 1); 216513c91cb7SFam Zheng iscsilun = bs->opaque; 2166de8864e5SPeter Lieven 216760beb341SKevin Wolf bs_options = qdict_new(); 21682ec9a782SFam Zheng iscsi_parse_filename(filename, bs_options, &local_err); 21692ec9a782SFam Zheng if (local_err) { 21702ec9a782SFam Zheng error_propagate(errp, local_err); 21712ec9a782SFam Zheng ret = -EINVAL; 21722ec9a782SFam Zheng } else { 2173015a1036SMax Reitz ret = iscsi_open(bs, bs_options, 0, NULL); 21742ec9a782SFam Zheng } 2175cb3e7f08SMarc-André Lureau qobject_unref(bs_options); 217660beb341SKevin Wolf 2177de8864e5SPeter Lieven if (ret != 0) { 2178de8864e5SPeter Lieven goto out; 2179de8864e5SPeter Lieven } 218080cf6257SStefan Hajnoczi iscsi_detach_aio_context(bs); 2181de8864e5SPeter Lieven if (iscsilun->type != TYPE_DISK) { 2182de8864e5SPeter Lieven ret = -ENODEV; 2183de8864e5SPeter Lieven goto out; 2184de8864e5SPeter Lieven } 218513c91cb7SFam Zheng if (bs->total_sectors < total_size) { 2186de8864e5SPeter Lieven ret = -ENOSPC; 2187d3bda7bcSPeter Lieven goto out; 2188de8864e5SPeter Lieven } 2189de8864e5SPeter Lieven 2190de8864e5SPeter Lieven ret = 0; 2191de8864e5SPeter Lieven out: 2192de8864e5SPeter Lieven if (iscsilun->iscsi != NULL) { 2193de8864e5SPeter Lieven iscsi_destroy_context(iscsilun->iscsi); 2194de8864e5SPeter Lieven } 219513c91cb7SFam Zheng g_free(bs->opaque); 219613c91cb7SFam Zheng bs->opaque = NULL; 21974f6fd349SFam Zheng bdrv_unref(bs); 2198de8864e5SPeter Lieven return ret; 2199de8864e5SPeter Lieven } 2200de8864e5SPeter Lieven 2201186d4f2bSPeter Lieven static int iscsi_get_info(BlockDriverState *bs, BlockDriverInfo *bdi) 2202186d4f2bSPeter Lieven { 2203186d4f2bSPeter Lieven IscsiLun *iscsilun = bs->opaque; 22040a386e48SPeter Lieven bdi->unallocated_blocks_are_zero = iscsilun->lbprz; 2205ba059e7bSEric Blake bdi->cluster_size = iscsilun->cluster_size; 2206186d4f2bSPeter Lieven return 0; 2207186d4f2bSPeter Lieven } 2208186d4f2bSPeter Lieven 22092b148f39SPaolo Bonzini static void coroutine_fn iscsi_co_invalidate_cache(BlockDriverState *bs, 2210e1123a3bSPeter Lieven Error **errp) 2211e1123a3bSPeter Lieven { 2212e1123a3bSPeter Lieven IscsiLun *iscsilun = bs->opaque; 2213e1123a3bSPeter Lieven iscsi_allocmap_invalidate(iscsilun); 2214e1123a3bSPeter Lieven } 2215e1123a3bSPeter Lieven 2216604dfaaaSFam Zheng static int coroutine_fn iscsi_co_copy_range_from(BlockDriverState *bs, 2217604dfaaaSFam Zheng BdrvChild *src, 2218604dfaaaSFam Zheng uint64_t src_offset, 2219604dfaaaSFam Zheng BdrvChild *dst, 2220604dfaaaSFam Zheng uint64_t dst_offset, 2221604dfaaaSFam Zheng uint64_t bytes, 222267b51fb9SVladimir Sementsov-Ogievskiy BdrvRequestFlags read_flags, 222367b51fb9SVladimir Sementsov-Ogievskiy BdrvRequestFlags write_flags) 2224604dfaaaSFam Zheng { 222567b51fb9SVladimir Sementsov-Ogievskiy return bdrv_co_copy_range_to(src, src_offset, dst, dst_offset, bytes, 222667b51fb9SVladimir Sementsov-Ogievskiy read_flags, write_flags); 2227604dfaaaSFam Zheng } 2228604dfaaaSFam Zheng 2229604dfaaaSFam Zheng static struct scsi_task *iscsi_xcopy_task(int param_len) 2230604dfaaaSFam Zheng { 2231604dfaaaSFam Zheng struct scsi_task *task; 2232604dfaaaSFam Zheng 2233604dfaaaSFam Zheng task = g_new0(struct scsi_task, 1); 2234604dfaaaSFam Zheng 2235604dfaaaSFam Zheng task->cdb[0] = EXTENDED_COPY; 2236604dfaaaSFam Zheng task->cdb[10] = (param_len >> 24) & 0xFF; 2237604dfaaaSFam Zheng task->cdb[11] = (param_len >> 16) & 0xFF; 2238604dfaaaSFam Zheng task->cdb[12] = (param_len >> 8) & 0xFF; 2239604dfaaaSFam Zheng task->cdb[13] = param_len & 0xFF; 2240604dfaaaSFam Zheng task->cdb_size = 16; 2241604dfaaaSFam Zheng task->xfer_dir = SCSI_XFER_WRITE; 2242604dfaaaSFam Zheng task->expxferlen = param_len; 2243604dfaaaSFam Zheng 2244604dfaaaSFam Zheng return task; 2245604dfaaaSFam Zheng } 2246604dfaaaSFam Zheng 2247604dfaaaSFam Zheng static void iscsi_populate_target_desc(unsigned char *desc, IscsiLun *lun) 2248604dfaaaSFam Zheng { 2249604dfaaaSFam Zheng struct scsi_inquiry_device_designator *dd = lun->dd; 2250604dfaaaSFam Zheng 2251604dfaaaSFam Zheng memset(desc, 0, 32); 2252604dfaaaSFam Zheng desc[0] = 0xE4; /* IDENT_DESCR_TGT_DESCR */ 2253604dfaaaSFam Zheng desc[4] = dd->code_set; 2254604dfaaaSFam Zheng desc[5] = (dd->designator_type & 0xF) 2255604dfaaaSFam Zheng | ((dd->association & 3) << 4); 2256604dfaaaSFam Zheng desc[7] = dd->designator_length; 22571439b9c1SFam Zheng memcpy(desc + 8, dd->designator, MIN(dd->designator_length, 20)); 2258604dfaaaSFam Zheng 2259604dfaaaSFam Zheng desc[28] = 0; 2260604dfaaaSFam Zheng desc[29] = (lun->block_size >> 16) & 0xFF; 2261604dfaaaSFam Zheng desc[30] = (lun->block_size >> 8) & 0xFF; 2262604dfaaaSFam Zheng desc[31] = lun->block_size & 0xFF; 2263604dfaaaSFam Zheng } 2264604dfaaaSFam Zheng 2265604dfaaaSFam Zheng static void iscsi_xcopy_desc_hdr(uint8_t *hdr, int dc, int cat, int src_index, 2266604dfaaaSFam Zheng int dst_index) 2267604dfaaaSFam Zheng { 2268604dfaaaSFam Zheng hdr[0] = 0x02; /* BLK_TO_BLK_SEG_DESCR */ 2269604dfaaaSFam Zheng hdr[1] = ((dc << 1) | cat) & 0xFF; 2270604dfaaaSFam Zheng hdr[2] = (XCOPY_BLK2BLK_SEG_DESC_SIZE >> 8) & 0xFF; 2271604dfaaaSFam Zheng /* don't account for the first 4 bytes in descriptor header*/ 2272604dfaaaSFam Zheng hdr[3] = (XCOPY_BLK2BLK_SEG_DESC_SIZE - 4 /* SEG_DESC_SRC_INDEX_OFFSET */) & 0xFF; 2273604dfaaaSFam Zheng hdr[4] = (src_index >> 8) & 0xFF; 2274604dfaaaSFam Zheng hdr[5] = src_index & 0xFF; 2275604dfaaaSFam Zheng hdr[6] = (dst_index >> 8) & 0xFF; 2276604dfaaaSFam Zheng hdr[7] = dst_index & 0xFF; 2277604dfaaaSFam Zheng } 2278604dfaaaSFam Zheng 2279604dfaaaSFam Zheng static void iscsi_xcopy_populate_desc(uint8_t *desc, int dc, int cat, 2280604dfaaaSFam Zheng int src_index, int dst_index, int num_blks, 2281604dfaaaSFam Zheng uint64_t src_lba, uint64_t dst_lba) 2282604dfaaaSFam Zheng { 2283604dfaaaSFam Zheng iscsi_xcopy_desc_hdr(desc, dc, cat, src_index, dst_index); 2284604dfaaaSFam Zheng 2285604dfaaaSFam Zheng /* The caller should verify the request size */ 2286604dfaaaSFam Zheng assert(num_blks < 65536); 2287604dfaaaSFam Zheng desc[10] = (num_blks >> 8) & 0xFF; 2288604dfaaaSFam Zheng desc[11] = num_blks & 0xFF; 2289604dfaaaSFam Zheng desc[12] = (src_lba >> 56) & 0xFF; 2290604dfaaaSFam Zheng desc[13] = (src_lba >> 48) & 0xFF; 2291604dfaaaSFam Zheng desc[14] = (src_lba >> 40) & 0xFF; 2292604dfaaaSFam Zheng desc[15] = (src_lba >> 32) & 0xFF; 2293604dfaaaSFam Zheng desc[16] = (src_lba >> 24) & 0xFF; 2294604dfaaaSFam Zheng desc[17] = (src_lba >> 16) & 0xFF; 2295604dfaaaSFam Zheng desc[18] = (src_lba >> 8) & 0xFF; 2296604dfaaaSFam Zheng desc[19] = src_lba & 0xFF; 2297604dfaaaSFam Zheng desc[20] = (dst_lba >> 56) & 0xFF; 2298604dfaaaSFam Zheng desc[21] = (dst_lba >> 48) & 0xFF; 2299604dfaaaSFam Zheng desc[22] = (dst_lba >> 40) & 0xFF; 2300604dfaaaSFam Zheng desc[23] = (dst_lba >> 32) & 0xFF; 2301604dfaaaSFam Zheng desc[24] = (dst_lba >> 24) & 0xFF; 2302604dfaaaSFam Zheng desc[25] = (dst_lba >> 16) & 0xFF; 2303604dfaaaSFam Zheng desc[26] = (dst_lba >> 8) & 0xFF; 2304604dfaaaSFam Zheng desc[27] = dst_lba & 0xFF; 2305604dfaaaSFam Zheng } 2306604dfaaaSFam Zheng 2307604dfaaaSFam Zheng static void iscsi_xcopy_populate_header(unsigned char *buf, int list_id, int str, 2308604dfaaaSFam Zheng int list_id_usage, int prio, 2309604dfaaaSFam Zheng int tgt_desc_len, 2310604dfaaaSFam Zheng int seg_desc_len, int inline_data_len) 2311604dfaaaSFam Zheng { 2312604dfaaaSFam Zheng buf[0] = list_id; 2313604dfaaaSFam Zheng buf[1] = ((str & 1) << 5) | ((list_id_usage & 3) << 3) | (prio & 7); 2314604dfaaaSFam Zheng buf[2] = (tgt_desc_len >> 8) & 0xFF; 2315604dfaaaSFam Zheng buf[3] = tgt_desc_len & 0xFF; 2316604dfaaaSFam Zheng buf[8] = (seg_desc_len >> 24) & 0xFF; 2317604dfaaaSFam Zheng buf[9] = (seg_desc_len >> 16) & 0xFF; 2318604dfaaaSFam Zheng buf[10] = (seg_desc_len >> 8) & 0xFF; 2319604dfaaaSFam Zheng buf[11] = seg_desc_len & 0xFF; 2320604dfaaaSFam Zheng buf[12] = (inline_data_len >> 24) & 0xFF; 2321604dfaaaSFam Zheng buf[13] = (inline_data_len >> 16) & 0xFF; 2322604dfaaaSFam Zheng buf[14] = (inline_data_len >> 8) & 0xFF; 2323604dfaaaSFam Zheng buf[15] = inline_data_len & 0xFF; 2324604dfaaaSFam Zheng } 2325604dfaaaSFam Zheng 2326604dfaaaSFam Zheng static void iscsi_xcopy_data(struct iscsi_data *data, 2327604dfaaaSFam Zheng IscsiLun *src, int64_t src_lba, 2328604dfaaaSFam Zheng IscsiLun *dst, int64_t dst_lba, 2329604dfaaaSFam Zheng uint16_t num_blocks) 2330604dfaaaSFam Zheng { 2331604dfaaaSFam Zheng uint8_t *buf; 2332604dfaaaSFam Zheng const int src_offset = XCOPY_DESC_OFFSET; 2333604dfaaaSFam Zheng const int dst_offset = XCOPY_DESC_OFFSET + IDENT_DESCR_TGT_DESCR_SIZE; 2334604dfaaaSFam Zheng const int seg_offset = dst_offset + IDENT_DESCR_TGT_DESCR_SIZE; 2335604dfaaaSFam Zheng 2336604dfaaaSFam Zheng data->size = XCOPY_DESC_OFFSET + 2337604dfaaaSFam Zheng IDENT_DESCR_TGT_DESCR_SIZE * 2 + 2338604dfaaaSFam Zheng XCOPY_BLK2BLK_SEG_DESC_SIZE; 2339604dfaaaSFam Zheng data->data = g_malloc0(data->size); 2340604dfaaaSFam Zheng buf = data->data; 2341604dfaaaSFam Zheng 2342604dfaaaSFam Zheng /* Initialise the parameter list header */ 2343604dfaaaSFam Zheng iscsi_xcopy_populate_header(buf, 1, 0, 2 /* LIST_ID_USAGE_DISCARD */, 2344604dfaaaSFam Zheng 0, 2 * IDENT_DESCR_TGT_DESCR_SIZE, 2345604dfaaaSFam Zheng XCOPY_BLK2BLK_SEG_DESC_SIZE, 2346604dfaaaSFam Zheng 0); 2347604dfaaaSFam Zheng 2348604dfaaaSFam Zheng /* Initialise CSCD list with one src + one dst descriptor */ 2349604dfaaaSFam Zheng iscsi_populate_target_desc(&buf[src_offset], src); 2350604dfaaaSFam Zheng iscsi_populate_target_desc(&buf[dst_offset], dst); 2351604dfaaaSFam Zheng 2352604dfaaaSFam Zheng /* Initialise one segment descriptor */ 2353604dfaaaSFam Zheng iscsi_xcopy_populate_desc(&buf[seg_offset], 0, 0, 0, 1, num_blocks, 2354604dfaaaSFam Zheng src_lba, dst_lba); 2355604dfaaaSFam Zheng } 2356604dfaaaSFam Zheng 2357604dfaaaSFam Zheng static int coroutine_fn iscsi_co_copy_range_to(BlockDriverState *bs, 2358604dfaaaSFam Zheng BdrvChild *src, 2359604dfaaaSFam Zheng uint64_t src_offset, 2360604dfaaaSFam Zheng BdrvChild *dst, 2361604dfaaaSFam Zheng uint64_t dst_offset, 2362604dfaaaSFam Zheng uint64_t bytes, 236367b51fb9SVladimir Sementsov-Ogievskiy BdrvRequestFlags read_flags, 236467b51fb9SVladimir Sementsov-Ogievskiy BdrvRequestFlags write_flags) 2365604dfaaaSFam Zheng { 2366604dfaaaSFam Zheng IscsiLun *dst_lun = dst->bs->opaque; 2367604dfaaaSFam Zheng IscsiLun *src_lun; 2368604dfaaaSFam Zheng struct IscsiTask iscsi_task; 2369604dfaaaSFam Zheng struct iscsi_data data; 2370604dfaaaSFam Zheng int r = 0; 2371604dfaaaSFam Zheng int block_size; 2372604dfaaaSFam Zheng 2373604dfaaaSFam Zheng if (src->bs->drv->bdrv_co_copy_range_to != iscsi_co_copy_range_to) { 2374604dfaaaSFam Zheng return -ENOTSUP; 2375604dfaaaSFam Zheng } 2376604dfaaaSFam Zheng src_lun = src->bs->opaque; 2377604dfaaaSFam Zheng 2378604dfaaaSFam Zheng if (!src_lun->dd || !dst_lun->dd) { 2379604dfaaaSFam Zheng return -ENOTSUP; 2380604dfaaaSFam Zheng } 2381604dfaaaSFam Zheng if (!is_byte_request_lun_aligned(dst_offset, bytes, dst_lun)) { 2382604dfaaaSFam Zheng return -ENOTSUP; 2383604dfaaaSFam Zheng } 2384604dfaaaSFam Zheng if (!is_byte_request_lun_aligned(src_offset, bytes, src_lun)) { 2385604dfaaaSFam Zheng return -ENOTSUP; 2386604dfaaaSFam Zheng } 2387604dfaaaSFam Zheng if (dst_lun->block_size != src_lun->block_size || 2388604dfaaaSFam Zheng !dst_lun->block_size) { 2389604dfaaaSFam Zheng return -ENOTSUP; 2390604dfaaaSFam Zheng } 2391604dfaaaSFam Zheng 2392604dfaaaSFam Zheng block_size = dst_lun->block_size; 2393604dfaaaSFam Zheng if (bytes / block_size > 65535) { 2394604dfaaaSFam Zheng return -ENOTSUP; 2395604dfaaaSFam Zheng } 2396604dfaaaSFam Zheng 2397604dfaaaSFam Zheng iscsi_xcopy_data(&data, 2398604dfaaaSFam Zheng src_lun, src_offset / block_size, 2399604dfaaaSFam Zheng dst_lun, dst_offset / block_size, 2400604dfaaaSFam Zheng bytes / block_size); 2401604dfaaaSFam Zheng 2402604dfaaaSFam Zheng iscsi_co_init_iscsitask(dst_lun, &iscsi_task); 2403604dfaaaSFam Zheng 2404604dfaaaSFam Zheng qemu_mutex_lock(&dst_lun->mutex); 2405604dfaaaSFam Zheng iscsi_task.task = iscsi_xcopy_task(data.size); 2406604dfaaaSFam Zheng retry: 2407604dfaaaSFam Zheng if (iscsi_scsi_command_async(dst_lun->iscsi, dst_lun->lun, 2408604dfaaaSFam Zheng iscsi_task.task, iscsi_co_generic_cb, 2409604dfaaaSFam Zheng &data, 2410604dfaaaSFam Zheng &iscsi_task) != 0) { 2411604dfaaaSFam Zheng r = -EIO; 2412604dfaaaSFam Zheng goto out_unlock; 2413604dfaaaSFam Zheng } 2414604dfaaaSFam Zheng 2415604dfaaaSFam Zheng iscsi_co_wait_for_task(&iscsi_task, dst_lun); 2416604dfaaaSFam Zheng 2417604dfaaaSFam Zheng if (iscsi_task.do_retry) { 2418604dfaaaSFam Zheng iscsi_task.complete = 0; 2419604dfaaaSFam Zheng goto retry; 2420604dfaaaSFam Zheng } 2421604dfaaaSFam Zheng 2422604dfaaaSFam Zheng if (iscsi_task.status != SCSI_STATUS_GOOD) { 2423604dfaaaSFam Zheng r = iscsi_task.err_code; 2424604dfaaaSFam Zheng goto out_unlock; 2425604dfaaaSFam Zheng } 2426604dfaaaSFam Zheng 2427604dfaaaSFam Zheng out_unlock: 2428ecc983a5SFam Zheng 2429ecc983a5SFam Zheng trace_iscsi_xcopy(src_lun, src_offset, dst_lun, dst_offset, bytes, r); 2430604dfaaaSFam Zheng g_free(iscsi_task.task); 2431604dfaaaSFam Zheng qemu_mutex_unlock(&dst_lun->mutex); 2432604dfaaaSFam Zheng g_free(iscsi_task.err_str); 2433604dfaaaSFam Zheng return r; 2434604dfaaaSFam Zheng } 2435604dfaaaSFam Zheng 2436a59479e3SChunyan Liu static QemuOptsList iscsi_create_opts = { 2437a59479e3SChunyan Liu .name = "iscsi-create-opts", 2438a59479e3SChunyan Liu .head = QTAILQ_HEAD_INITIALIZER(iscsi_create_opts.head), 2439a59479e3SChunyan Liu .desc = { 2440de8864e5SPeter Lieven { 2441de8864e5SPeter Lieven .name = BLOCK_OPT_SIZE, 2442a59479e3SChunyan Liu .type = QEMU_OPT_SIZE, 2443de8864e5SPeter Lieven .help = "Virtual disk size" 2444de8864e5SPeter Lieven }, 2445a59479e3SChunyan Liu { /* end of list */ } 2446a59479e3SChunyan Liu } 2447de8864e5SPeter Lieven }; 2448de8864e5SPeter Lieven 2449c589b249SRonnie Sahlberg static BlockDriver bdrv_iscsi = { 2450c589b249SRonnie Sahlberg .format_name = "iscsi", 2451c589b249SRonnie Sahlberg .protocol_name = "iscsi", 2452c589b249SRonnie Sahlberg 2453c589b249SRonnie Sahlberg .instance_size = sizeof(IscsiLun), 2454d5895fcbSKevin Wolf .bdrv_parse_filename = iscsi_parse_filename, 2455c589b249SRonnie Sahlberg .bdrv_file_open = iscsi_open, 2456c589b249SRonnie Sahlberg .bdrv_close = iscsi_close, 2457efc75e2aSStefan Hajnoczi .bdrv_co_create_opts = iscsi_co_create_opts, 2458a59479e3SChunyan Liu .create_opts = &iscsi_create_opts, 2459dc6afb99SJeff Cody .bdrv_reopen_prepare = iscsi_reopen_prepare, 2460e1123a3bSPeter Lieven .bdrv_reopen_commit = iscsi_reopen_commit, 24612b148f39SPaolo Bonzini .bdrv_co_invalidate_cache = iscsi_co_invalidate_cache, 2462c589b249SRonnie Sahlberg 2463c589b249SRonnie Sahlberg .bdrv_getlength = iscsi_getlength, 2464186d4f2bSPeter Lieven .bdrv_get_info = iscsi_get_info, 2465061ca8a3SKevin Wolf .bdrv_co_truncate = iscsi_co_truncate, 2466d34682cdSKevin Wolf .bdrv_refresh_limits = iscsi_refresh_limits, 2467c589b249SRonnie Sahlberg 246892809c36SEric Blake .bdrv_co_block_status = iscsi_co_block_status, 246997c7e85cSEric Blake .bdrv_co_pdiscard = iscsi_co_pdiscard, 2470604dfaaaSFam Zheng .bdrv_co_copy_range_from = iscsi_co_copy_range_from, 2471604dfaaaSFam Zheng .bdrv_co_copy_range_to = iscsi_co_copy_range_to, 247294d047a3SEric Blake .bdrv_co_pwrite_zeroes = iscsi_co_pwrite_zeroes, 2473063c3378SPeter Lieven .bdrv_co_readv = iscsi_co_readv, 2474e18a58b4SEric Blake .bdrv_co_writev = iscsi_co_writev, 2475063c3378SPeter Lieven .bdrv_co_flush_to_disk = iscsi_co_flush, 2476fa6acb0cSRonnie Sahlberg 247798392453SRonnie Sahlberg #ifdef __linux__ 247898392453SRonnie Sahlberg .bdrv_aio_ioctl = iscsi_aio_ioctl, 247998392453SRonnie Sahlberg #endif 248080cf6257SStefan Hajnoczi 248180cf6257SStefan Hajnoczi .bdrv_detach_aio_context = iscsi_detach_aio_context, 248280cf6257SStefan Hajnoczi .bdrv_attach_aio_context = iscsi_attach_aio_context, 2483c589b249SRonnie Sahlberg }; 2484c589b249SRonnie Sahlberg 2485e0ae4987SRoy Shterman #if LIBISCSI_API_VERSION >= (20160603) 2486e0ae4987SRoy Shterman static BlockDriver bdrv_iser = { 2487e0ae4987SRoy Shterman .format_name = "iser", 2488e0ae4987SRoy Shterman .protocol_name = "iser", 2489e0ae4987SRoy Shterman 2490e0ae4987SRoy Shterman .instance_size = sizeof(IscsiLun), 2491d5895fcbSKevin Wolf .bdrv_parse_filename = iscsi_parse_filename, 2492e0ae4987SRoy Shterman .bdrv_file_open = iscsi_open, 2493e0ae4987SRoy Shterman .bdrv_close = iscsi_close, 2494efc75e2aSStefan Hajnoczi .bdrv_co_create_opts = iscsi_co_create_opts, 2495e0ae4987SRoy Shterman .create_opts = &iscsi_create_opts, 2496e0ae4987SRoy Shterman .bdrv_reopen_prepare = iscsi_reopen_prepare, 2497e0ae4987SRoy Shterman .bdrv_reopen_commit = iscsi_reopen_commit, 2498b16a7cfaSPaolo Bonzini .bdrv_co_invalidate_cache = iscsi_co_invalidate_cache, 2499e0ae4987SRoy Shterman 2500e0ae4987SRoy Shterman .bdrv_getlength = iscsi_getlength, 2501e0ae4987SRoy Shterman .bdrv_get_info = iscsi_get_info, 2502061ca8a3SKevin Wolf .bdrv_co_truncate = iscsi_co_truncate, 2503e0ae4987SRoy Shterman .bdrv_refresh_limits = iscsi_refresh_limits, 2504e0ae4987SRoy Shterman 250592809c36SEric Blake .bdrv_co_block_status = iscsi_co_block_status, 2506e0ae4987SRoy Shterman .bdrv_co_pdiscard = iscsi_co_pdiscard, 2507604dfaaaSFam Zheng .bdrv_co_copy_range_from = iscsi_co_copy_range_from, 2508604dfaaaSFam Zheng .bdrv_co_copy_range_to = iscsi_co_copy_range_to, 2509e0ae4987SRoy Shterman .bdrv_co_pwrite_zeroes = iscsi_co_pwrite_zeroes, 2510e0ae4987SRoy Shterman .bdrv_co_readv = iscsi_co_readv, 2511e18a58b4SEric Blake .bdrv_co_writev = iscsi_co_writev, 2512e0ae4987SRoy Shterman .bdrv_co_flush_to_disk = iscsi_co_flush, 2513e0ae4987SRoy Shterman 2514e0ae4987SRoy Shterman #ifdef __linux__ 2515e0ae4987SRoy Shterman .bdrv_aio_ioctl = iscsi_aio_ioctl, 2516e0ae4987SRoy Shterman #endif 2517e0ae4987SRoy Shterman 2518e0ae4987SRoy Shterman .bdrv_detach_aio_context = iscsi_detach_aio_context, 2519e0ae4987SRoy Shterman .bdrv_attach_aio_context = iscsi_attach_aio_context, 2520e0ae4987SRoy Shterman }; 2521e0ae4987SRoy Shterman #endif 2522e0ae4987SRoy Shterman 2523c589b249SRonnie Sahlberg static void iscsi_block_init(void) 2524c589b249SRonnie Sahlberg { 2525c589b249SRonnie Sahlberg bdrv_register(&bdrv_iscsi); 2526e0ae4987SRoy Shterman #if LIBISCSI_API_VERSION >= (20160603) 2527e0ae4987SRoy Shterman bdrv_register(&bdrv_iser); 2528e0ae4987SRoy Shterman #endif 2529c589b249SRonnie Sahlberg } 2530c589b249SRonnie Sahlberg 2531c589b249SRonnie Sahlberg block_init(iscsi_block_init); 2532