[SCSI] bfa: LUN discovery issue in direct attach mode

In direct attach mode, if port features like QoS/Trunk/FEC/CR are
enabled, driver can receive PLOGI from the target before firmware
notifies lport online to the driver. In case the lport is not yet online
and a PLOGI is received, send a reject to the peer port, instead of
dropping it on the floor.

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

diff --git a/drivers/scsi/bfa/bfa_fcs_lport.c b/drivers/scsi/bfa/bfa_fcs_lport.c
index f5e4e61..ff75ef8 100644 (file)
--- a/drivers/scsi/bfa/bfa_fcs_lport.c
+++ b/drivers/scsi/bfa/bfa_fcs_lport.c
@@ -773,7 +773,20 @@ bfa_fcs_lport_uf_recv(struct bfa_fcs_lport_s *lport,
        bfa_trc(lport->fcs, fchs->type);
 
        if (!bfa_fcs_lport_is_online(lport)) {
-               bfa_stats(lport, uf_recv_drops);
+               /*
+                * In direct attach topology, it is possible to get a PLOGI
+                * before the lport is online due to port feature
+                * (QoS/Trunk/FEC/CR), so send a rjt
+                */
+               if ((fchs->type == FC_TYPE_ELS) &&
+                       (els_cmd->els_code == FC_ELS_PLOGI)) {
+                       bfa_fcs_lport_send_ls_rjt(lport, fchs,
+                               FC_LS_RJT_RSN_UNABLE_TO_PERF_CMD,
+                               FC_LS_RJT_EXP_NO_ADDL_INFO);
+                       bfa_stats(lport, plogi_rcvd);
+               } else
+                       bfa_stats(lport, uf_recv_drops);
+
                return;
        }