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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: Tyrel Datwyler <tyreld@linux.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Tyrel Datwyler 2020-11-17 12:50:31 -06:00 committed by Martin K. Petersen
parent 4e0716199a
commit 2aa0102c66
1 changed files with 4 additions and 0 deletions
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4
drivers/scsi/ibmvscsi/ibmvfc.c
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@ -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);
}