Commit 2aa0102c authored by Tyrel Datwyler's avatar Tyrel Datwyler Committed by Martin K. Petersen
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scsi: ibmvfc: Use correlation token to tag commands 

The vfcFrame correlation field is a 64bit handle that is intended to trace
I/O operations through both the client stack and VIOS stack when the
underlying physical FC adapter supports tagging.

Tag vfcFrames with the associated ibmvfc_event pointer handle.

Link: https://lore.kernel.org/r/20201117185031.129939-3-tyreld@linux.ibm.com


Signed-off-by: default avatarTyrel Datwyler <tyreld@linux.ibm.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 4e071619

drivers/scsi/ibmvscsi/ibmvfc.c

+4 −0
Original line number Diff line number Diff line
@@ -1693,6 +1693,8 @@ static int ibmvfc_queuecommand_lck(struct scsi_cmnd *cmnd, 
		vfc_cmd->iu.pri_task_attr = IBMVFC_SIMPLE_TASK;

	}



	vfc_cmd->correlation = cpu_to_be64(evt);



	if (likely(!(rc = ibmvfc_map_sg_data(cmnd, evt, vfc_cmd, vhost->dev))))

		return ibmvfc_send_event(evt, vhost, 0);
@@ -2370,6 +2372,8 @@ static int ibmvfc_abort_task_set(struct scsi_device *sdev) 
		tmf->iu.tmf_flags = IBMVFC_ABORT_TASK_SET;

		evt->sync_iu = &rsp_iu;



		tmf->correlation = cpu_to_be64(evt);



		init_completion(&evt->comp);

		rsp_rc = ibmvfc_send_event(evt, vhost, default_timeout);

	}