bool lbprz;
bool dpofua;
bool has_write_same;
- bool force_next_flush;
bool request_timed_out;
} IscsiLun;
QEMUBH *bh;
IscsiLun *iscsilun;
QEMUTimer retry_timer;
- bool force_next_flush;
int err_code;
} IscsiTask;
}
iTask->err_code = iscsi_translate_sense(&task->sense);
error_report("iSCSI Failure: %s", iscsi_get_error(iscsi));
- } else {
- iTask->iscsilun->force_next_flush |= iTask->force_next_flush;
}
out:
return sector * BDRV_SECTOR_SIZE / iscsilun->block_size;
}
-static bool is_request_lun_aligned(int64_t sector_num, int nb_sectors,
- IscsiLun *iscsilun)
+static bool is_byte_request_lun_aligned(int64_t offset, int count,
+ IscsiLun *iscsilun)
{
- if ((sector_num * BDRV_SECTOR_SIZE) % iscsilun->block_size ||
- (nb_sectors * BDRV_SECTOR_SIZE) % iscsilun->block_size) {
- error_report("iSCSI misaligned request: "
- "iscsilun->block_size %u, sector_num %" PRIi64
- ", nb_sectors %d",
- iscsilun->block_size, sector_num, nb_sectors);
- return 0;
- }
- return 1;
+ if (offset % iscsilun->block_size || count % iscsilun->block_size) {
+ error_report("iSCSI misaligned request: "
+ "iscsilun->block_size %u, offset %" PRIi64
+ ", count %d",
+ iscsilun->block_size, offset, count);
+ return false;
+ }
+ return true;
+}
+
+static bool is_sector_request_lun_aligned(int64_t sector_num, int nb_sectors,
+ IscsiLun *iscsilun)
+{
+ assert(nb_sectors <= BDRV_REQUEST_MAX_SECTORS);
+ return is_byte_request_lun_aligned(sector_num << BDRV_SECTOR_BITS,
+ nb_sectors << BDRV_SECTOR_BITS,
+ iscsilun);
}
static unsigned long *iscsi_allocationmap_init(IscsiLun *iscsilun)
}
}
-static int coroutine_fn iscsi_co_writev(BlockDriverState *bs,
- int64_t sector_num, int nb_sectors,
- QEMUIOVector *iov)
+static int coroutine_fn
+iscsi_co_writev_flags(BlockDriverState *bs, int64_t sector_num, int nb_sectors,
+ QEMUIOVector *iov, int flags)
{
IscsiLun *iscsilun = bs->opaque;
struct IscsiTask iTask;
uint64_t lba;
uint32_t num_sectors;
- int fua;
+ bool fua = flags & BDRV_REQ_FUA;
- if (!is_request_lun_aligned(sector_num, nb_sectors, iscsilun)) {
+ if (fua) {
+ assert(iscsilun->dpofua);
+ }
+ if (!is_sector_request_lun_aligned(sector_num, nb_sectors, iscsilun)) {
return -EINVAL;
}
- if (bs->bl.max_transfer_length && nb_sectors > bs->bl.max_transfer_length) {
+ if (bs->bl.max_transfer &&
+ nb_sectors << BDRV_SECTOR_BITS > bs->bl.max_transfer) {
error_report("iSCSI Error: Write of %d sectors exceeds max_xfer_len "
- "of %d sectors", nb_sectors, bs->bl.max_transfer_length);
+ "of %" PRIu32 " bytes", nb_sectors, bs->bl.max_transfer);
return -EINVAL;
}
num_sectors = sector_qemu2lun(nb_sectors, iscsilun);
iscsi_co_init_iscsitask(iscsilun, &iTask);
retry:
- fua = iscsilun->dpofua && !bdrv_enable_write_cache(bs);
- iTask.force_next_flush = !fua;
if (iscsilun->use_16_for_rw) {
iTask.task = iscsi_write16_task(iscsilun->iscsi, iscsilun->lun, lba,
NULL, num_sectors * iscsilun->block_size,
iscsi_co_init_iscsitask(iscsilun, &iTask);
- if (!is_request_lun_aligned(sector_num, nb_sectors, iscsilun)) {
+ if (!is_sector_request_lun_aligned(sector_num, nb_sectors, iscsilun)) {
ret = -EINVAL;
goto out;
}
uint64_t lba;
uint32_t num_sectors;
- if (!is_request_lun_aligned(sector_num, nb_sectors, iscsilun)) {
+ if (!is_sector_request_lun_aligned(sector_num, nb_sectors, iscsilun)) {
return -EINVAL;
}
- if (bs->bl.max_transfer_length && nb_sectors > bs->bl.max_transfer_length) {
+ if (bs->bl.max_transfer &&
+ nb_sectors << BDRV_SECTOR_BITS > bs->bl.max_transfer) {
error_report("iSCSI Error: Read of %d sectors exceeds max_xfer_len "
- "of %d sectors", nb_sectors, bs->bl.max_transfer_length);
+ "of %" PRIu32 " bytes", nb_sectors, bs->bl.max_transfer);
return -EINVAL;
}
int64_t ret;
int pnum;
BlockDriverState *file;
- ret = iscsi_co_get_block_status(bs, sector_num, INT_MAX, &pnum, &file);
+ ret = iscsi_co_get_block_status(bs, sector_num,
+ BDRV_REQUEST_MAX_SECTORS, &pnum, &file);
if (ret < 0) {
return ret;
}
IscsiLun *iscsilun = bs->opaque;
struct IscsiTask iTask;
- if (!iscsilun->force_next_flush) {
- return 0;
- }
- iscsilun->force_next_flush = false;
-
iscsi_co_init_iscsitask(iscsilun, &iTask);
retry:
if (iscsi_synchronizecache10_task(iscsilun->iscsi, iscsilun->lun, 0, 0, 0,
acb->ioh->driver_status = 0;
acb->ioh->host_status = 0;
acb->ioh->resid = 0;
+ acb->ioh->status = status;
#define SG_ERR_DRIVER_SENSE 0x08
return &acb->common;
}
+ if (acb->ioh->cmd_len > SCSI_CDB_MAX_SIZE) {
+ error_report("iSCSI: ioctl error CDB exceeds max size (%d > %d)",
+ acb->ioh->cmd_len, SCSI_CDB_MAX_SIZE);
+ qemu_aio_unref(acb);
+ return NULL;
+ }
+
acb->task = malloc(sizeof(struct scsi_task));
if (acb->task == NULL) {
error_report("iSCSI: Failed to allocate task for scsi command. %s",
struct IscsiTask iTask;
struct unmap_list list;
- if (!is_request_lun_aligned(sector_num, nb_sectors, iscsilun)) {
+ if (!is_sector_request_lun_aligned(sector_num, nb_sectors, iscsilun)) {
return -EINVAL;
}
}
static int
-coroutine_fn iscsi_co_write_zeroes(BlockDriverState *bs, int64_t sector_num,
- int nb_sectors, BdrvRequestFlags flags)
+coroutine_fn iscsi_co_pwrite_zeroes(BlockDriverState *bs, int64_t offset,
+ int count, BdrvRequestFlags flags)
{
IscsiLun *iscsilun = bs->opaque;
struct IscsiTask iTask;
uint32_t nb_blocks;
bool use_16_for_ws = iscsilun->use_16_for_rw;
- if (!is_request_lun_aligned(sector_num, nb_sectors, iscsilun)) {
- return -EINVAL;
+ if (!is_byte_request_lun_aligned(offset, count, iscsilun)) {
+ return -ENOTSUP;
}
if (flags & BDRV_REQ_MAY_UNMAP) {
return -ENOTSUP;
}
- lba = sector_qemu2lun(sector_num, iscsilun);
- nb_blocks = sector_qemu2lun(nb_sectors, iscsilun);
+ lba = offset / iscsilun->block_size;
+ nb_blocks = count / iscsilun->block_size;
if (iscsilun->zeroblock == NULL) {
iscsilun->zeroblock = g_try_malloc0(iscsilun->block_size);
}
iscsi_co_init_iscsitask(iscsilun, &iTask);
- iTask.force_next_flush = true;
retry:
if (use_16_for_ws) {
iTask.task = iscsi_writesame16_task(iscsilun->iscsi, iscsilun->lun, lba,
}
if (flags & BDRV_REQ_MAY_UNMAP) {
- iscsi_allocationmap_clear(iscsilun, sector_num, nb_sectors);
+ iscsi_allocationmap_clear(iscsilun, offset >> BDRV_SECTOR_BITS,
+ count >> BDRV_SECTOR_BITS);
} else {
- iscsi_allocationmap_set(iscsilun, sector_num, nb_sectors);
+ iscsi_allocationmap_set(iscsilun, offset >> BDRV_SECTOR_BITS,
+ count >> BDRV_SECTOR_BITS);
}
return 0;
task = NULL;
iscsi_modesense_sync(iscsilun);
+ if (iscsilun->dpofua) {
+ bs->supported_write_flags = BDRV_REQ_FUA;
+ }
+ bs->supported_zero_flags = BDRV_REQ_MAY_UNMAP;
/* Check the write protect flag of the LUN if we want to write */
if (iscsilun->type == TYPE_DISK && (flags & BDRV_O_RDWR) &&
goto out;
}
bs->total_sectors = sector_lun2qemu(iscsilun->num_blocks, iscsilun);
- bs->request_alignment = iscsilun->block_size;
/* We don't have any emulation for devices other than disks and CD-ROMs, so
* this must be sg ioctl compatible. We force it to be sg, otherwise qemu
* will try to read from the device to guess the image format.
*/
if (iscsilun->type != TYPE_DISK && iscsilun->type != TYPE_ROM) {
- bs->sg = 1;
+ bs->sg = true;
}
task = iscsi_do_inquiry(iscsilun->iscsi, iscsilun->lun, 1,
memset(iscsilun, 0, sizeof(IscsiLun));
}
-static int sector_limits_lun2qemu(int64_t sector, IscsiLun *iscsilun)
-{
- return MIN(sector_lun2qemu(sector, iscsilun), INT_MAX / 2 + 1);
-}
-
static void iscsi_refresh_limits(BlockDriverState *bs, Error **errp)
{
/* We don't actually refresh here, but just return data queried in
* iscsi_open(): iscsi targets don't change their limits. */
IscsiLun *iscsilun = bs->opaque;
- uint32_t max_xfer_len = iscsilun->use_16_for_rw ? 0xffffffff : 0xffff;
+ uint64_t max_xfer_len = iscsilun->use_16_for_rw ? 0xffffffff : 0xffff;
+
+ bs->bl.request_alignment = iscsilun->block_size;
if (iscsilun->bl.max_xfer_len) {
max_xfer_len = MIN(max_xfer_len, iscsilun->bl.max_xfer_len);
}
- bs->bl.max_transfer_length = sector_limits_lun2qemu(max_xfer_len, iscsilun);
+ if (max_xfer_len * iscsilun->block_size < INT_MAX) {
+ bs->bl.max_transfer = max_xfer_len * iscsilun->block_size;
+ }
if (iscsilun->lbp.lbpu) {
- if (iscsilun->bl.max_unmap < 0xffffffff) {
- bs->bl.max_discard =
- sector_limits_lun2qemu(iscsilun->bl.max_unmap, iscsilun);
+ if (iscsilun->bl.max_unmap < 0xffffffff / iscsilun->block_size) {
+ bs->bl.max_pdiscard =
+ iscsilun->bl.max_unmap * iscsilun->block_size;
}
- bs->bl.discard_alignment =
- sector_limits_lun2qemu(iscsilun->bl.opt_unmap_gran, iscsilun);
+ bs->bl.pdiscard_alignment =
+ iscsilun->bl.opt_unmap_gran * iscsilun->block_size;
+ } else {
+ bs->bl.pdiscard_alignment = iscsilun->block_size;
}
- if (iscsilun->bl.max_ws_len < 0xffffffff) {
- bs->bl.max_write_zeroes =
- sector_limits_lun2qemu(iscsilun->bl.max_ws_len, iscsilun);
+ if (iscsilun->bl.max_ws_len < 0xffffffff / iscsilun->block_size) {
+ bs->bl.max_pwrite_zeroes =
+ iscsilun->bl.max_ws_len * iscsilun->block_size;
}
if (iscsilun->lbp.lbpws) {
- bs->bl.write_zeroes_alignment =
- sector_limits_lun2qemu(iscsilun->bl.opt_unmap_gran, iscsilun);
+ bs->bl.pwrite_zeroes_alignment =
+ iscsilun->bl.opt_unmap_gran * iscsilun->block_size;
+ } else {
+ bs->bl.pwrite_zeroes_alignment = iscsilun->block_size;
+ }
+ if (iscsilun->bl.opt_xfer_len &&
+ iscsilun->bl.opt_xfer_len < INT_MAX / iscsilun->block_size) {
+ bs->bl.opt_transfer = pow2floor(iscsilun->bl.opt_xfer_len *
+ iscsilun->block_size);
}
- bs->bl.opt_transfer_length =
- sector_limits_lun2qemu(iscsilun->bl.opt_xfer_len, iscsilun);
}
/* Note that this will not re-establish a connection with an iSCSI target - it
.bdrv_co_get_block_status = iscsi_co_get_block_status,
.bdrv_co_discard = iscsi_co_discard,
- .bdrv_co_write_zeroes = iscsi_co_write_zeroes,
+ .bdrv_co_pwrite_zeroes = iscsi_co_pwrite_zeroes,
.bdrv_co_readv = iscsi_co_readv,
- .bdrv_co_writev = iscsi_co_writev,
+ .bdrv_co_writev_flags = iscsi_co_writev_flags,
.bdrv_co_flush_to_disk = iscsi_co_flush,
#ifdef __linux__
projects / qemu.git / blobdiff