scsi: move SCSIRequest management to common code.

Create generic functions to allocate, find and release SCSIRequest
structs.  Make scsi-disk and scsi-generic use them.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/hw/scsi.h b/hw/scsi.h
index a9b846c..ceeb26a 100644
--- a/hw/scsi.h
+++ b/hw/scsi.h
@@ -20,6 +20,7 @@ typedef struct SCSIRequest {
     SCSIBus           *bus;
     SCSIDevice        *dev;
     uint32_t          tag;
+    uint32_t          lun;
     BlockDriverAIOCB  *aiocb;
     QTAILQ_ENTRY(SCSIRequest) next;
 } SCSIRequest;
@@ -74,4 +75,8 @@ static inline SCSIBus *scsi_bus_from_device(SCSIDevice *d)
 SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, DriveInfo *dinfo, int unit);
 void scsi_bus_legacy_handle_cmdline(SCSIBus *bus);
 
+SCSIRequest *scsi_req_alloc(size_t size, SCSIDevice *d, uint32_t tag, uint32_t lun);
+SCSIRequest *scsi_req_find(SCSIDevice *d, uint32_t tag);
+void scsi_req_free(SCSIRequest *req);
+
 #endif