scsi: lpfc: Fix issues connecting with nvme initiator

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@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/lpfc/lpfc_nportdisc.c b/drivers/scsi/lpfc/lpfc_nportdisc.c
index 283382a..d841aa4 100644 (file)
--- a/drivers/scsi/lpfc/lpfc_nportdisc.c
+++ b/drivers/scsi/lpfc/lpfc_nportdisc.c
@@ -1603,8 +1603,8 @@ lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
                         * rpi registration does complete.
                         */
                        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;