[SCSI] bfa: Add support for max target ports discovery

- Changes to avoid discovering NPIV port as remote port by the other
  NPIV ports created on same physical port when all the NPIV ports are
  part of the same zone in a fabric.
- Provided mechanism to support maximum number of target ports for a
  given initiator port (physical port + NPIV ports) irrespective of the
  way in which the initiator and target ports are zoned in the fabric.
- Introduced module_parameter max_rport_logins to restrict number of
  remote ports discovery which includes target and initiator remote ports.

Signed-off-by: Vijaya Mohan Guvva <vmohan@brocade.com>
Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

1 files changed, 9 insertions, 2 deletions

diff --git a/drivers/scsi/bfa/bfa_svc.c b/drivers/scsi/bfa/bfa_svc.c
index e7669f8ef78f..b2538d60db34 100644
--- a/drivers/scsi/bfa/bfa_svc.c
+++ b/drivers/scsi/bfa/bfa_svc.c
@@ -4275,6 +4275,10 @@ bfa_rport_sm_offline(struct bfa_rport_s *rp, enum bfa_rport_event event)
 		bfa_sm_set_state(rp, bfa_rport_sm_iocdisable);
 		break;
 
+	case BFA_RPORT_SM_OFFLINE:
+		bfa_rport_offline_cb(rp);
+		break;
+
 	default:
 		bfa_stats(rp, sm_off_unexp);
 		bfa_sm_fault(rp->bfa, event);
@@ -4391,6 +4395,7 @@ bfa_rport_sm_offline_pending(struct bfa_rport_s *rp,
 	case BFA_RPORT_SM_HWFAIL:
 		bfa_stats(rp, sm_offp_hwf);
 		bfa_sm_set_state(rp, bfa_rport_sm_iocdisable);
+		bfa_rport_offline_cb(rp);
 		break;
 
 	default:
@@ -4769,8 +4774,10 @@ bfa_rport_speed(struct bfa_rport_s *rport, enum bfa_port_speed speed)
 	WARN_ON(speed == 0);
 	WARN_ON(speed == BFA_PORT_SPEED_AUTO);
 
-	rport->rport_info.speed = speed;
-	bfa_sm_send_event(rport, BFA_RPORT_SM_SET_SPEED);
+	if (rport) {
+		rport->rport_info.speed = speed;
+		bfa_sm_send_event(rport, BFA_RPORT_SM_SET_SPEED);
+	}
 }
 
 /* Set Rport LUN Mask */