IOCB BDE not getting fully initialized during reuse
Symptoms: Driver gets Status 3 and Reason 0x13 on IOCB completions.
Cause: The IOCB bpl.bdeSize and bdeFlags are not getting initialized on reuse.
Fix: Reinitialize these fields in prep_dma each time an IOCB is used.
Signed-off-by: James Smart <[EMAIL PROTECTED]>
--- a/drivers/scsi/lpfc/lpfc_scsi.c
+++ b/drivers/scsi/lpfc/lpfc_scsi.c
@@ -238,6 +238,8 @@ lpfc_scsi_prep_dma_buf(struct lpfc_hba *
bpl->tus.f.bdeSize = scsi_cmnd->request_bufflen;
if (datadir == DMA_TO_DEVICE)
bpl->tus.f.bdeFlags = 0;
+ else
+ bpl->tus.f.bdeFlags = BUFF_USE_RCV;
bpl->tus.w = le32_to_cpu(bpl->tus.w);
num_bde = 1;
bpl++;
@@ -245,8 +247,11 @@ lpfc_scsi_prep_dma_buf(struct lpfc_hba *
/*
* Finish initializing those IOCB fields that are dependent on the
- * scsi_cmnd request_buffer
+ * scsi_cmnd request_buffer. Note that the bdeSize is explicitly
+ * reinitialized since all iocb memory resources are used many times
+ * for transmit, receive, and continuation bpl's.
*/
+ iocb_cmd->un.fcpi64.bdl.bdeSize = (2 * sizeof (struct ulp_bde64));
iocb_cmd->un.fcpi64.bdl.bdeSize +=
(num_bde * sizeof (struct ulp_bde64));
iocb_cmd->ulpBdeCount = 1;
-
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