qla2xxx: Set FLOGI retry in additional firmware options for P2P (N2N) mode.

When VP decoupling enabled, there could be a window where, FLOGI from initiators
can be dropped before VP0 is enabled, causing link level recovery.
Retry FLOGI to avoid link level recovery.
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/qla2xxx/qla_dbg.c

@@ -16,7 +16,7 @@
  * |                              |                    | 0x016e-0x0170  |
  * | Mailbox commands             |       0x1192       |		|
  * |                              |                    |		|
- * | Device Discovery             |       0x2016       | 0x2020-0x2022, |
+ * | Device Discovery             |       0x2003       | 0x2016		|
  * |                              |                    | 0x2011-0x2012, |
  * |                              |                    | 0x2099-0x20a4  |
  * | Queue Command and IO tracing |       0x3074       | 0x300b         |

drivers/scsi/qla2xxx/qla_init.c

@@ -2053,6 +2053,14 @@ qla2x00_update_fw_options(scsi_qla_host_t *vha)
 	if (IS_QLA6312(ha))
 		ha->fw_options[2] |= BIT_13;
 
+	/* Set Retry FLOGI in case of P2P connection */
+	if (ha->operating_mode == P2P) {
+		ha->fw_options[2] |= BIT_3;
+		ql_dbg(ql_dbg_disc, vha, 0x2100,
+		    "(%s): Setting FLOGI retry BIT in fw_options[2]: 0x%x\n",
+			__func__, ha->fw_options[2]);
+	}
+
 	/* Update firmware options. */
 	qla2x00_set_fw_options(vha, ha->fw_options);
 }
@@ -2070,6 +2078,14 @@ qla24xx_update_fw_options(scsi_qla_host_t *vha)
 	if (ql2xfwholdabts)
 		ha->fw_options[3] |= BIT_12;
 
+	/* Set Retry FLOGI in case of P2P connection */
+	if (ha->operating_mode == P2P) {
+		ha->fw_options[2] |= BIT_3;
+		ql_dbg(ql_dbg_disc, vha, 0x2101,
+		    "(%s): Setting FLOGI retry BIT in fw_options[2]: 0x%x\n",
+			__func__, ha->fw_options[2]);
+	}
+
 	/* Update Serial Link options. */
 	if ((le16_to_cpu(ha->fw_seriallink_options24[0]) & BIT_0) == 0)
 		return;
@@ -6513,6 +6529,14 @@ qla81xx_update_fw_options(scsi_qla_host_t *vha)
 	if (ql2xfwholdabts)
 		ha->fw_options[3] |= BIT_12;
 
+	/* Set Retry FLOGI in case of P2P connection */
+	if (ha->operating_mode == P2P) {
+		ha->fw_options[2] |= BIT_3;
+		ql_dbg(ql_dbg_disc, vha, 0x2103,
+		    "(%s): Setting FLOGI retry BIT in fw_options[2]: 0x%x\n",
+			__func__, ha->fw_options[2]);
+	}
+
 	if (!ql2xetsenable)
 		goto out;