usb: gadget: u_ether: allow getting binary-form host address

helper function to copy MAC address to proper place.
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/gadget/u_ether.c

@@ -963,6 +963,15 @@ int gether_get_host_addr_cdc(struct net_device *net, char *host_addr, int len)
 }
 EXPORT_SYMBOL(gether_get_host_addr_cdc);
 
+void gether_get_host_addr_u8(struct net_device *net, u8 host_mac[ETH_ALEN])
+{
+	struct eth_dev *dev;
+
+	dev = netdev_priv(net);
+	memcpy(host_mac, dev->host_mac, ETH_ALEN);
+}
+EXPORT_SYMBOL(gether_get_host_addr_u8);
+
 void gether_set_qmult(struct net_device *net, unsigned qmult)
 {
 	struct eth_dev *dev;

drivers/usb/gadget/u_ether.h

@@ -209,6 +209,16 @@ int gether_get_host_addr(struct net_device *net, char *host_addr, int len);
  */
 int gether_get_host_addr_cdc(struct net_device *net, char *host_addr, int len);
 
+/**
+ * gether_get_host_addr_u8 - get an ethernet-over-usb link host address
+ * @net: device representing this link
+ * @host_mac: place to store the eth address of the host
+ *
+ * This gets the binary formatted host-side Ethernet address of this
+ * ethernet-over-usb link.
+ */
+void gether_get_host_addr_u8(struct net_device *net, u8 host_mac[ETH_ALEN]);
+
 /**
  * gether_set_qmult - initialize an ethernet-over-usb link with a multiplier
  * @net: device representing this link