diff options
Diffstat (limited to 'block')
| -rw-r--r-- | block/iscsi.c | 129 |
1 files changed, 56 insertions, 73 deletions
diff --git a/block/iscsi.c b/block/iscsi.c index f7199c1abb..0bbf0b18b4 100644 --- a/block/iscsi.c +++ b/block/iscsi.c @@ -218,10 +218,8 @@ iscsi_aio_write16_cb(struct iscsi_context *iscsi, int status, if (status == SCSI_STATUS_CHECK_CONDITION && acb->task->sense.key == SCSI_SENSE_UNIT_ATTENTION && acb->retries-- > 0) { - if (acb->task != NULL) { - scsi_free_scsi_task(acb->task); - acb->task = NULL; - } + scsi_free_scsi_task(acb->task); + acb->task = NULL; if (iscsi_aio_writev_acb(acb) == 0) { iscsi_set_events(acb->iscsilun); return; @@ -303,6 +301,7 @@ iscsi_aio_writev_acb(IscsiAIOCB *acb) acb); #endif if (ret != 0) { + scsi_free_scsi_task(acb->task); g_free(acb->buf); return -1; } @@ -333,9 +332,6 @@ iscsi_aio_writev(BlockDriverState *bs, int64_t sector_num, acb->retries = ISCSI_CMD_RETRIES; if (iscsi_aio_writev_acb(acb) != 0) { - if (acb->task) { - scsi_free_scsi_task(acb->task); - } qemu_aio_release(acb); return NULL; } @@ -364,10 +360,8 @@ iscsi_aio_read16_cb(struct iscsi_context *iscsi, int status, if (status == SCSI_STATUS_CHECK_CONDITION && acb->task->sense.key == SCSI_SENSE_UNIT_ATTENTION && acb->retries-- > 0) { - if (acb->task != NULL) { - scsi_free_scsi_task(acb->task); - acb->task = NULL; - } + scsi_free_scsi_task(acb->task); + acb->task = NULL; if (iscsi_aio_readv_acb(acb) == 0) { iscsi_set_events(acb->iscsilun); return; @@ -445,6 +439,7 @@ iscsi_aio_readv_acb(IscsiAIOCB *acb) NULL, acb); if (ret != 0) { + scsi_free_scsi_task(acb->task); return -1; } @@ -480,9 +475,6 @@ iscsi_aio_readv(BlockDriverState *bs, int64_t sector_num, acb->retries = ISCSI_CMD_RETRIES; if (iscsi_aio_readv_acb(acb) != 0) { - if (acb->task) { - scsi_free_scsi_task(acb->task); - } qemu_aio_release(acb); return NULL; } @@ -509,10 +501,8 @@ iscsi_synccache10_cb(struct iscsi_context *iscsi, int status, if (status == SCSI_STATUS_CHECK_CONDITION && acb->task->sense.key == SCSI_SENSE_UNIT_ATTENTION && acb->retries-- > 0) { - if (acb->task != NULL) { - scsi_free_scsi_task(acb->task); - acb->task = NULL; - } + scsi_free_scsi_task(acb->task); + acb->task = NULL; if (iscsi_aio_flush_acb(acb) == 0) { iscsi_set_events(acb->iscsilun); return; @@ -589,10 +579,8 @@ iscsi_unmap_cb(struct iscsi_context *iscsi, int status, if (status == SCSI_STATUS_CHECK_CONDITION && acb->task->sense.key == SCSI_SENSE_UNIT_ATTENTION && acb->retries-- > 0) { - if (acb->task != NULL) { - scsi_free_scsi_task(acb->task); - acb->task = NULL; - } + scsi_free_scsi_task(acb->task); + acb->task = NULL; if (iscsi_aio_discard_acb(acb) == 0) { iscsi_set_events(acb->iscsilun); return; @@ -647,9 +635,6 @@ iscsi_aio_discard(BlockDriverState *bs, acb->retries = ISCSI_CMD_RETRIES; if (iscsi_aio_discard_acb(acb) != 0) { - if (acb->task) { - scsi_free_scsi_task(acb->task); - } qemu_aio_release(acb); return NULL; } @@ -946,60 +931,58 @@ static int iscsi_readcapacity_sync(IscsiLun *iscsilun) int ret = 0; int retries = ISCSI_CMD_RETRIES; -try_again: - switch (iscsilun->type) { - case TYPE_DISK: - task = iscsi_readcapacity16_sync(iscsilun->iscsi, iscsilun->lun); - if (task == NULL || task->status != SCSI_STATUS_GOOD) { - if (task != NULL && task->status == SCSI_STATUS_CHECK_CONDITION - && task->sense.key == SCSI_SENSE_UNIT_ATTENTION - && retries-- > 0) { - scsi_free_scsi_task(task); - goto try_again; - } - error_report("iSCSI: failed to send readcapacity16 command."); - ret = -EINVAL; - goto out; + do { + if (task != NULL) { + scsi_free_scsi_task(task); + task = NULL; } - rc16 = scsi_datain_unmarshall(task); - if (rc16 == NULL) { - error_report("iSCSI: Failed to unmarshall readcapacity16 data."); - ret = -EINVAL; - goto out; - } - iscsilun->block_size = rc16->block_length; - iscsilun->num_blocks = rc16->returned_lba + 1; - break; - case TYPE_ROM: - task = iscsi_readcapacity10_sync(iscsilun->iscsi, iscsilun->lun, 0, 0); - if (task == NULL || task->status != SCSI_STATUS_GOOD) { - error_report("iSCSI: failed to send readcapacity10 command."); - ret = -EINVAL; - goto out; - } - rc10 = scsi_datain_unmarshall(task); - if (rc10 == NULL) { - error_report("iSCSI: Failed to unmarshall readcapacity10 data."); - ret = -EINVAL; - goto out; - } - iscsilun->block_size = rc10->block_size; - if (rc10->lba == 0) { - /* blank disk loaded */ - iscsilun->num_blocks = 0; - } else { - iscsilun->num_blocks = rc10->lba + 1; + + switch (iscsilun->type) { + case TYPE_DISK: + task = iscsi_readcapacity16_sync(iscsilun->iscsi, iscsilun->lun); + if (task != NULL && task->status == SCSI_STATUS_GOOD) { + rc16 = scsi_datain_unmarshall(task); + if (rc16 == NULL) { + error_report("iSCSI: Failed to unmarshall readcapacity16 data."); + ret = -EINVAL; + } else { + iscsilun->block_size = rc16->block_length; + iscsilun->num_blocks = rc16->returned_lba + 1; + } + } + break; + case TYPE_ROM: + task = iscsi_readcapacity10_sync(iscsilun->iscsi, iscsilun->lun, 0, 0); + if (task != NULL && task->status == SCSI_STATUS_GOOD) { + rc10 = scsi_datain_unmarshall(task); + if (rc10 == NULL) { + error_report("iSCSI: Failed to unmarshall readcapacity10 data."); + ret = -EINVAL; + } else { + iscsilun->block_size = rc10->block_size; + if (rc10->lba == 0) { + /* blank disk loaded */ + iscsilun->num_blocks = 0; + } else { + iscsilun->num_blocks = rc10->lba + 1; + } + } + } + break; + default: + return 0; } - break; - default: - break; - } + } while (task != NULL && task->status == SCSI_STATUS_CHECK_CONDITION + && task->sense.key == SCSI_SENSE_UNIT_ATTENTION + && retries-- > 0); -out: + if (task == NULL || task->status != SCSI_STATUS_GOOD) { + error_report("iSCSI: failed to send readcapacity10 command."); + ret = -EINVAL; + } if (task) { scsi_free_scsi_task(task); } - return ret; } |