From: Tyrel Datwyler <tyreld@linux.ibm.com>
To: james.bottomley@hansenpartnership.com
Cc: martin.petersen@oracle.com, linux-scsi@vger.kernel.org,
linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org,
brking@linux.ibm.com, Tyrel Datwyler <tyreld@linux.ibm.com>
Subject: [PATCH 3/3] ibmvfc: use correlation token to tag commands
Date: Tue, 17 Nov 2020 12:50:31 -0600 [thread overview]
Message-ID: <20201117185031.129939-3-tyreld@linux.ibm.com> (raw)
In-Reply-To: <20201117185031.129939-1-tyreld@linux.ibm.com>
The vfcFrame correlation field is 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.
Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com>
---
drivers/scsi/ibmvscsi/ibmvfc.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c
index 0cab4b852b48..3922441a117d 100644
--- a/drivers/scsi/ibmvscsi/ibmvfc.c
+++ b/drivers/scsi/ibmvscsi/ibmvfc.c
@@ -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);
}
--
2.27.0
next prev parent reply other threads:[~2020-11-17 18:51 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-17 18:50 [PATCH 1/3] ibmvfc: byte swap login_buf.resp values in attribute show functions Tyrel Datwyler
2020-11-17 18:50 ` [PATCH 2/3] ibmvfc: remove trailing semicolon Tyrel Datwyler
2020-11-17 18:50 ` Tyrel Datwyler [this message]
2020-12-22 6:24 ` [PATCH 3/3] ibmvfc: use correlation token to tag commands Nathan Chancellor
2020-12-22 17:38 ` Tyrel Datwyler
2020-11-20 3:09 ` [PATCH 1/3] ibmvfc: byte swap login_buf.resp values in attribute show functions Martin K. Petersen
2020-11-24 3:58 ` Martin K. Petersen
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