[SCSI] lpfc 8.3.21: FC Discovery changes

FC Discovery changes

- Treat received PLOGI while logged in as a relogin (unregister and reregister).
- Added a timer to delay Nport discovery when clean bit is cleared and Fabric
  portname/nodename/FCID is changed.
- Invalidate Port's DID when receiving PLOGI from p2p port with CONFIG_PORT
  mailbox command.

Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 8 insertions, 3 deletions

diff --git a/drivers/scsi/lpfc/lpfc_nportdisc.c b/drivers/scsi/lpfc/lpfc_nportdisc.c
index d85a7423a694..52b35159fc35 100644
--- a/drivers/scsi/lpfc/lpfc_nportdisc.c
+++ b/drivers/scsi/lpfc/lpfc_nportdisc.c
@@ -350,7 +350,11 @@ lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
         ndlp->nlp_maxframe =
                 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
 
-        /* no need to reg_login if we are already in one of these states */
+        /*
+         * Need to unreg_login if we are already in one of these states and
+         * change to NPR state. This will block the port until after the ACC
+         * completes and the reg_login is issued and completed.
+         */
         switch (ndlp->nlp_state) {
         case  NLP_STE_NPR_NODE:
                 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
@@ -359,8 +363,9 @@ lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
         case  NLP_STE_PRLI_ISSUE:
         case  NLP_STE_UNMAPPED_NODE:
         case  NLP_STE_MAPPED_NODE:
-                lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL);
-                return 1;
+                lpfc_unreg_rpi(vport, ndlp);
+                ndlp->nlp_prev_state = ndlp->nlp_state;
+                lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
         }
 
         if ((vport->fc_flag & FC_PT2PT) &&