This is a note to let you know that I've just added the patch titled
scsi: lpfc: Fix issues connecting with nvme initiator
to the 4.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
scsi-lpfc-fix-issues-connecting-with-nvme-initiator.patch
and it can be found in the queue-4.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Thu Mar 22 14:26:48 CET 2018
From: James Smart <jsmart2021@xxxxxxxxx>
Date: Fri, 8 Dec 2017 17:18:08 -0800
Subject: scsi: lpfc: Fix issues connecting with nvme initiator
From: James Smart <jsmart2021@xxxxxxxxx>
[ Upstream commit e06351a002214d152142906a546006e3446d1ef7 ]
In the lpfc discovery engine, when as a nvme target, where the driver
was performing mailbox io with the adapter for port login when a NVME
PRLI is received from the host. Rather than queue and eventually get
back to sending a response after the mailbox traffic, the driver
rejected the io with an error response.
Turns out this particular initiator didn't like the rejection values
(unable to process command/command in progress) so it never attempted a
retry of the PRLI. Thus the host never established nvme connectivity
with the lpfc target.
By changing the rejection values (to Logical Busy/nothing more), the
initiator accepted the response and would retry the PRLI, resulting in
nvme connectivity.
Signed-off-by: Dick Kennedy <dick.kennedy@xxxxxxxxxxxx>
Signed-off-by: James Smart <james.smart@xxxxxxxxxxxx>
Reviewed-by: Hannes Reinecke <hare@xxxxxxxx>
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/scsi/lpfc/lpfc_nportdisc.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/scsi/lpfc/lpfc_nportdisc.c
+++ b/drivers/scsi/lpfc/lpfc_nportdisc.c
@@ -1569,8 +1569,8 @@ lpfc_rcv_prli_reglogin_issue(struct lpfc
ndlp->nlp_rpi, ndlp->nlp_state,
ndlp->nlp_flag);
memset(&stat, 0, sizeof(struct ls_rjt));
- stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
- stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
+ stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
+ stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
ndlp, NULL);
return ndlp->nlp_state;
Patches currently in stable-queue which might be from jsmart2021@xxxxxxxxx are
queue-4.14/scsi-lpfc-fix-scsi-lun-discovery-when-scsi-and-nvme-enabled.patch
queue-4.14/scsi-lpfc-fix-issues-connecting-with-nvme-initiator.patch