[PATCH] forcedeth: add set_mac_address support

[Manfred Spraul <manfred@xxxxxxxxxxxxxxxx>]

Hi Jeff,

Ayaz wrote a patch that adds set_mac_address to the forcedeth nic.
Could you add it to your tree? set_mac_address is required for some 
bonding modes.
Signed-Off-By: Manfred Spraul <manfred@xxxxxxxxxxxxxxxx>

--- 2.6/drivers/net/forcedeth.c 2005-07-22 22:47:01.000000000 +0200
+++ build-2.6/drivers/net/forcedeth.c   2005-07-22 22:47:31.000000000 +0200
@@ -90,6 +90,7 @@
  *     0.38: 16 Jul 2005: tx irq rewrite: Use global flags instead of
  *                        per-packet flags.
  *      0.39: 18 Jul 2005: Add 64bit descriptor support.
+ *      0.40: 19 Jul 2005: Add support for mac address change.
  *
  * Known bugs:
  * We suspect that on some hardware no TX done interrupts are generated.
@@ -1417,6 +1418,54 @@
 }
 
 /*
+ * nv_set_mac_address: dev->set_mac_address function
+ * Called with rtnl_lock() held.
+ */
+static int nv_set_mac_address(struct net_device *dev, void *addr)
+{
+       struct fe_priv *np = get_nvpriv(dev);
+       u8 *base = get_hwbase(dev);
+       struct sockaddr *macaddr = (struct sockaddr*)addr;
+       u32 mac[2];
+
+       if(!is_valid_ether_addr(macaddr->sa_data))
+               return -EADDRNOTAVAIL;
+
+       /* synchronized against open : rtnl_lock() held by caller */
+       if (netif_running(dev)) {
+               spin_lock_bh(&dev->xmit_lock);
+               spin_lock_irq(&np->lock);
+
+               /* stop rx engine */
+               nv_stop_rx(dev);
+
+               /* set mac address */
+               memcpy(dev->dev_addr, macaddr->sa_data, ETH_ALEN);
+               mac[0] = (dev->dev_addr[0] << 0) + (dev->dev_addr[1] << 8) +
+                               (dev->dev_addr[2] << 16) + (dev->dev_addr[3] << 
24);
+               mac[1] = (dev->dev_addr[4] << 0) + (dev->dev_addr[5] << 8);
+
+               writel(mac[0], base + NvRegMacAddrA);
+               writel(mac[1], base + NvRegMacAddrB);
+       
+               /* restart rx engine */
+               nv_start_rx(dev);
+               spin_unlock_irq(&np->lock);
+               spin_unlock_bh(&dev->xmit_lock);
+       } else {
+               /* set mac address */
+               memcpy(dev->dev_addr, macaddr->sa_data, ETH_ALEN);
+               mac[0] = (dev->dev_addr[0] << 0) + (dev->dev_addr[1] << 8) +
+                               (dev->dev_addr[2] << 16) + (dev->dev_addr[3] << 
24);
+               mac[1] = (dev->dev_addr[4] << 0) + (dev->dev_addr[5] << 8);
+
+               writel(mac[0], base + NvRegMacAddrA);
+               writel(mac[1], base + NvRegMacAddrB);
+       }
+       return 0;
+}
+
+/*
  * nv_set_multicast: dev->set_multicast function
  * Called with dev->xmit_lock held.
  */
@@ -2298,6 +2347,7 @@
        dev->hard_start_xmit = nv_start_xmit;
        dev->get_stats = nv_get_stats;
        dev->change_mtu = nv_change_mtu;
+       dev->set_mac_address = nv_set_mac_address;
        dev->set_multicast_list = nv_set_multicast;
 #ifdef CONFIG_NET_POLL_CONTROLLER
        dev->poll_controller = nv_poll_controller;