[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>

1 files changed, 14 insertions, 1 deletions

diff --git a/drivers/scsi/bfa/bfa_fcs_lport.c b/drivers/scsi/bfa/bfa_fcs_lport.c
index f5e4e61a0fd7..ff75ef891755 100644
--- 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;
         }