ixgbe: Add FCoE Storage MAC Address support

This patch implements the Storage Address entrypoint from the net device.
It will read the SAN MAC addresses from the EEPROM of the 82599 hardware,
and make them available to the FCoE stack through the net device.

Also, add/del the SAN MAC address to the netdev dev_addr_list via the
kernel api dev_addr_add()/dev_addr_del() when there is a valid SAN MAC
supported by the HW.

Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 48 insertions, 0 deletions

diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index d69a0526f24d..fe0ac8bdb10b 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -4799,6 +4799,48 @@ static int ixgbe_ioctl(struct net_device *netdev, struct ifreq *req, int cmd)
 	return mdio_mii_ioctl(&adapter->hw.phy.mdio, if_mii(req), cmd);
 }
 
+/**
+ * ixgbe_add_sanmac_netdev - Add the SAN MAC address to the corresponding
+ * netdev->dev_addr_list
+ * @netdev: network interface device structure
+ *
+ * Returns non-zero on failure
+ **/
+static int ixgbe_add_sanmac_netdev(struct net_device *dev)
+{
+	int err = 0;
+	struct ixgbe_adapter *adapter = netdev_priv(dev);
+	struct ixgbe_mac_info *mac = &adapter->hw.mac;
+
+	if (is_valid_ether_addr(mac->san_addr)) {
+		rtnl_lock();
+		err = dev_addr_add(dev, mac->san_addr, NETDEV_HW_ADDR_T_SAN);
+		rtnl_unlock();
+	}
+	return err;
+}
+
+/**
+ * ixgbe_del_sanmac_netdev - Removes the SAN MAC address to the corresponding
+ * netdev->dev_addr_list
+ * @netdev: network interface device structure
+ *
+ * Returns non-zero on failure
+ **/
+static int ixgbe_del_sanmac_netdev(struct net_device *dev)
+{
+	int err = 0;
+	struct ixgbe_adapter *adapter = netdev_priv(dev);
+	struct ixgbe_mac_info *mac = &adapter->hw.mac;
+
+	if (is_valid_ether_addr(mac->san_addr)) {
+		rtnl_lock();
+		err = dev_addr_del(dev, mac->san_addr, NETDEV_HW_ADDR_T_SAN);
+		rtnl_unlock();
+	}
+	return err;
+}
+
 #ifdef CONFIG_NET_POLL_CONTROLLER
 /*
  * Polling 'interrupt' - used by things like netconsole to send skbs
@@ -5159,6 +5201,8 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev,
 		ixgbe_setup_dca(adapter);
 	}
 #endif
+	/* add san mac addr to netdev */
+	ixgbe_add_sanmac_netdev(netdev);
 
 	dev_info(&pdev->dev, "Intel(R) 10 Gigabit Network Connection\n");
 	cards_found++;
@@ -5229,6 +5273,10 @@ static void __devexit ixgbe_remove(struct pci_dev *pdev)
 		ixgbe_cleanup_fcoe(adapter);
 
 #endif /* IXGBE_FCOE */
+
+	/* remove the added san mac */
+	ixgbe_del_sanmac_netdev(netdev);
+
 	if (netdev->reg_state == NETREG_REGISTERED)
 		unregister_netdev(netdev);