[SCSI] fcoe: Use LLD's WWPN and WWNN for lport if LLD supports ndo_fcoe_get_wwn

If the LLD wants its own WWNN/WWPN to be used, it should implement the
netdev_ops.ndo_fcoe_get_wwn(). If that is the case, we query the LLD and use
the queried WWNN/WWPN from the LLD.

Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 23 insertions, 2 deletions

diff --git a/drivers/scsi/fcoe/fcoe.c b/drivers/scsi/fcoe/fcoe.c
index a30ffaa1222c..9b6aebbb47d3 100644
--- a/drivers/scsi/fcoe/fcoe.c
+++ b/drivers/scsi/fcoe/fcoe.c
@@ -545,6 +545,23 @@ static void fcoe_queue_timer(ulong lport)
 }
 
 /**
+ * fcoe_get_wwn() - Get the world wide name from LLD if it supports it
+ * @netdev: the associated net device
+ * @wwn: the output WWN
+ * @type: the type of WWN (WWPN or WWNN)
+ *
+ * Returns: 0 for success
+ */
+static int fcoe_get_wwn(struct net_device *netdev, u64 *wwn, int type)
+{
+        const struct net_device_ops *ops = netdev->netdev_ops;
+
+        if (ops->ndo_fcoe_get_wwn)
+                return ops->ndo_fcoe_get_wwn(netdev, wwn, type);
+        return -EINVAL;
+}
+
+/**
  * fcoe_netdev_config() - Set up net devive for SW FCoE
  * @lport:  The local port that is associated with the net device
  * @netdev: The associated net device
@@ -611,9 +628,13 @@ static int fcoe_netdev_config(struct fc_lport *lport, struct net_device *netdev)
                  */
                 if (netdev->priv_flags & IFF_802_1Q_VLAN)
                         vid = vlan_dev_vlan_id(netdev);
-                wwnn = fcoe_wwn_from_mac(fcoe->ctlr.ctl_src_addr, 1, 0);
+
+                if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN))
+                        wwnn = fcoe_wwn_from_mac(fcoe->ctlr.ctl_src_addr, 1, 0);
                 fc_set_wwnn(lport, wwnn);
-                wwpn = fcoe_wwn_from_mac(fcoe->ctlr.ctl_src_addr, 2, vid);
+                if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN))
+                        wwpn = fcoe_wwn_from_mac(fcoe->ctlr.ctl_src_addr,
+                                                 2, vid);
                 fc_set_wwpn(lport, wwpn);
         }