scsi: pass residual amount to command_complete

With the upcoming sglist support, HBAs will not see any transfer_data
call and will not have a way to detect short transfers.  So pass the
residual amount of data upon command completion.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/hw/scsi.h b/hw/scsi.h
index dc72b6fc1e..8722ef9be4 100644
--- a/hw/scsi.h
+++ b/hw/scsi.h
@@ -46,6 +46,7 @@ struct SCSIRequest {
     uint32_t          tag;
     uint32_t          lun;
     uint32_t          status;
+    size_t            resid;
     SCSICommand       cmd;
     BlockDriverAIOCB  *aiocb;
     uint8_t sense[SCSI_SENSE_BUF_SIZE];
@@ -112,7 +113,7 @@ struct SCSIBusInfo {
     int tcq;
     int max_channel, max_target, max_lun;
     void (*transfer_data)(SCSIRequest *req, uint32_t arg);
-    void (*complete)(SCSIRequest *req, uint32_t arg);
+    void (*complete)(SCSIRequest *req, uint32_t arg, size_t resid);
     void (*cancel)(SCSIRequest *req);
 };