static int coroutine_fn iscsi_co_writev(BlockDriverState *bs,

                                        int64_t sector_num, int nb_sectors,

                                        QEMUIOVector *iov)

{

    IscsiLun *iscsilun = bs->opaque;

    struct IscsiTask iTask;

    uint64_t lba;

    uint32_t num_sectors;

    int fua;



    if (!is_request_lun_aligned(sector_num, nb_sectors, iscsilun)) {

        return -EINVAL;

    }



    if (bs->bl.max_transfer_length && nb_sectors > bs->bl.max_transfer_length) {

        error_report("iSCSI Error: Write of %d sectors exceeds max_xfer_len "

                     "of %d sectors", nb_sectors, bs->bl.max_transfer_length);

        return -EINVAL;

    }



    lba = sector_qemu2lun(sector_num, iscsilun);

    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,

                                        iscsilun->block_size, 0, 0, fua, 0, 0,

                                        iscsi_co_generic_cb, &iTask);

    } else {

        iTask.task = iscsi_write10_task(iscsilun->iscsi, iscsilun->lun, lba,

                                        NULL, num_sectors * iscsilun->block_size,

                                        iscsilun->block_size, 0, 0, fua, 0, 0,

                                        iscsi_co_generic_cb, &iTask);

    }

    if (iTask.task == NULL) {

        return -ENOMEM;

    }

    scsi_task_set_iov_out(iTask.task, (struct scsi_iovec *) iov->iov,

                          iov->niov);

    while (!iTask.complete) {

        iscsi_set_events(iscsilun);

        qemu_coroutine_yield();

    }



    if (iTask.task != NULL) {

        scsi_free_scsi_task(iTask.task);

        iTask.task = NULL;

    }



    if (iTask.do_retry) {

        iTask.complete = 0;

        goto retry;

    }



    if (iTask.status != SCSI_STATUS_GOOD) {

        return iTask.err_code;

    }



    iscsi_allocationmap_set(iscsilun, sector_num, nb_sectors);



    return 0;

}

static int coroutine_fn iscsi_co_writev(BlockDriverState *bs,

                                        int64_t sector_num, int nb_sectors,

                                        QEMUIOVector *iov)

{

    IscsiLun *iscsilun = bs->opaque;

    struct IscsiTask iTask;

    uint64_t lba;

    uint32_t num_sectors;

    int fua;



    if (!is_request_lun_aligned(sector_num, nb_sectors, iscsilun)) {

        return -EINVAL;

    }



    if (bs->bl.max_transfer_length && nb_sectors > bs->bl.max_transfer_length) {

        error_report("iSCSI Error: Write of %d sectors exceeds max_xfer_len "

                     "of %d sectors", nb_sectors, bs->bl.max_transfer_length);

        return -EINVAL;

    }



    lba = sector_qemu2lun(sector_num, iscsilun);

    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,

                                        iscsilun->block_size, 0, 0, fua, 0, 0,

                                        iscsi_co_generic_cb, &iTask);

    } else {

        iTask.task = iscsi_write10_task(iscsilun->iscsi, iscsilun->lun, lba,

                                        NULL, num_sectors * iscsilun->block_size,

                                        iscsilun->block_size, 0, 0, fua, 0, 0,

                                        iscsi_co_generic_cb, &iTask);

    }

    if (iTask.task == NULL) {

        return -ENOMEM;

    }

    scsi_task_set_iov_out(iTask.task, (struct scsi_iovec *) iov->iov,

                          iov->niov);

    while (!iTask.complete) {

        iscsi_set_events(iscsilun);

        qemu_coroutine_yield();

    }



    if (iTask.task != NULL) {

        scsi_free_scsi_task(iTask.task);

        iTask.task = NULL;

    }



    if (iTask.do_retry) {

        iTask.complete = 0;

        goto retry;

    }



    if (iTask.status != SCSI_STATUS_GOOD) {

        return iTask.err_code;

    }



    iscsi_allocationmap_set(iscsilun, sector_num, nb_sectors);



    return 0;

}

static int VAR_0 iscsi_co_writev(BlockDriverState *bs,

                                        int64_t sector_num, int nb_sectors,

                                        QEMUIOVector *iov)

{

    IscsiLun *iscsilun = bs->opaque;

    struct IscsiTask iTask;

    uint64_t lba;

    uint32_t num_sectors;

    int fua;



    if (!is_request_lun_aligned(sector_num, nb_sectors, iscsilun)) {

        return -EINVAL;

    }



    if (bs->bl.max_transfer_length && nb_sectors > bs->bl.max_transfer_length) {

        error_report("iSCSI Error: Write of %d sectors exceeds max_xfer_len "

                     "of %d sectors", nb_sectors, bs->bl.max_transfer_length);

        return -EINVAL;

    }



    lba = sector_qemu2lun(sector_num, iscsilun);

    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,

                                        iscsilun->block_size, 0, 0, fua, 0, 0,

                                        iscsi_co_generic_cb, &iTask);

    } else {

        iTask.task = iscsi_write10_task(iscsilun->iscsi, iscsilun->lun, lba,

                                        NULL, num_sectors * iscsilun->block_size,

                                        iscsilun->block_size, 0, 0, fua, 0, 0,

                                        iscsi_co_generic_cb, &iTask);

    }

    if (iTask.task == NULL) {

        return -ENOMEM;

    }

    scsi_task_set_iov_out(iTask.task, (struct scsi_iovec *) iov->iov,

                          iov->niov);

    while (!iTask.complete) {

        iscsi_set_events(iscsilun);

        qemu_coroutine_yield();

    }



    if (iTask.task != NULL) {

        scsi_free_scsi_task(iTask.task);

        iTask.task = NULL;

    }



    if (iTask.do_retry) {

        iTask.complete = 0;

        goto retry;

    }



    if (iTask.status != SCSI_STATUS_GOOD) {

        return iTask.err_code;

    }



    iscsi_allocationmap_set(iscsilun, sector_num, nb_sectors);



    return 0;

}

static int VAR_0 iscsi_co_writev(BlockDriverState *bs,
int64_t sector_num, int nb_sectors,
QEMUIOVector *iov)
{ IscsiLun *iscsilun = bs->opaque; struct IscsiTask iTask; uint64_t lba; uint32_t num_sectors; int fua; if (!is_request_lun_aligned(sector_num, nb_sectors, iscsilun)) { return -EINVAL; } if (bs->bl.max_transfer_length && nb_sectors > bs->bl.max_transfer_length) { error_report("iSCSI Error: Write of %d sectors exceeds max_xfer_len "
"of %d sectors", nb_sectors, bs->bl.max_transfer_length); return -EINVAL; } lba = sector_qemu2lun(sector_num, iscsilun); 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,
iscsilun->block_size, 0, 0, fua, 0, 0,
iscsi_co_generic_cb, &iTask); } else { iTask.task = iscsi_write10_task(iscsilun->iscsi, iscsilun->lun, lba,
NULL, num_sectors * iscsilun->block_size,
iscsilun->block_size, 0, 0, fua, 0, 0,
iscsi_co_generic_cb, &iTask); } if (iTask.task == NULL) { return -ENOMEM; } scsi_task_set_iov_out(iTask.task, (struct scsi_iovec *) iov->iov,
iov->niov); while (!iTask.complete) { iscsi_set_events(iscsilun); qemu_coroutine_yield(); } if (iTask.task != NULL) { scsi_free_scsi_task(iTask.task); iTask.task = NULL; } if (iTask.do_retry) { iTask.complete = 0; goto retry; } if (iTask.status != SCSI_STATUS_GOOD) { return iTask.err_code; } iscsi_allocationmap_set(iscsilun, sector_num, nb_sectors); return 0; }