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smsc911x: allow setting of mac address 

This patch replaces the generic eth_mac_addr function with one that
also updates the hardware mac address registers.  It also renames the
existing smsc911x_set_mac_address function to
smsc911x_hw_set_mac_address for clarity.

Newer LAN911x and all LAN921x devices also support changing the mac
address while the device is running, which is useful for some bonding
modes.

Signed-off-by: Steve Glendinning <steve.glendinning@smsc.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Steve Glendinning 2009-03-19 00:24:46 +00:00 коммит произвёл David S. Miller
Родитель 63a2ebb079
Коммит 225ddf498c
1 изменённых файлов: 30 добавлений и 5 удалений
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35
drivers/net/smsc911x.c
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@ -1119,7 +1119,7 @@ static int smsc911x_soft_reset(struct smsc911x_data *pdata)
/* Sets the device MAC address to dev_addr, called with mac_lock held */
static void
smsc911x_set_mac_address(struct smsc911x_data *pdata, u8 dev_addr[6])
smsc911x_set_hw_mac_address(struct smsc911x_data *pdata, u8 dev_addr[6])
{
u32 mac_high16 = (dev_addr[5] << 8) | dev_addr[4];
u32 mac_low32 = (dev_addr[3] << 24) | (dev_addr[2] << 16) |
@ -1174,7 +1174,7 @@ static int smsc911x_open(struct net_device *dev)
/* The soft reset above cleared the device's MAC address,
* restore it from local copy (set in probe) */
spin_lock_irq(&pdata->mac_lock);
smsc911x_set_mac_address(pdata, dev->dev_addr);
smsc911x_set_hw_mac_address(pdata, dev->dev_addr);
spin_unlock_irq(&pdata->mac_lock);
/* Initialise irqs, but leave all sources disabled */
@ -1504,6 +1504,31 @@ static void smsc911x_poll_controller(struct net_device *dev)
}
#endif /* CONFIG_NET_POLL_CONTROLLER */
static int smsc911x_set_mac_address(struct net_device *dev, void *p)
{
struct smsc911x_data *pdata = netdev_priv(dev);
struct sockaddr *addr = p;
/* On older hardware revisions we cannot change the mac address
* registers while receiving data. Newer devices can safely change
* this at any time. */
if (pdata->generation <= 1 && netif_running(dev))
return -EBUSY;
if (!is_valid_ether_addr(addr->sa_data))
return -EADDRNOTAVAIL;
memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
spin_lock_irq(&pdata->mac_lock);
smsc911x_set_hw_mac_address(pdata, dev->dev_addr);
spin_unlock_irq(&pdata->mac_lock);
dev_info(&dev->dev, "MAC Address: %pM\n", dev->dev_addr);
return 0;
}
/* Standard ioctls for mii-tool */
static int smsc911x_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
{
@ -1734,7 +1759,7 @@ static const struct net_device_ops smsc911x_netdev_ops = {
.ndo_set_multicast_list = smsc911x_set_multicast_list,
.ndo_do_ioctl = smsc911x_do_ioctl,
.ndo_validate_addr = eth_validate_addr,
.ndo_set_mac_address = eth_mac_addr,
.ndo_set_mac_address = smsc911x_set_mac_address,
#ifdef CONFIG_NET_POLL_CONTROLLER
.ndo_poll_controller = smsc911x_poll_controller,
#endif
@ -2022,7 +2047,7 @@ static int __devinit smsc911x_drv_probe(struct platform_device *pdev)
/* Check if mac address has been specified when bringing interface up */
if (is_valid_ether_addr(dev->dev_addr)) {
smsc911x_set_mac_address(pdata, dev->dev_addr);
smsc911x_set_hw_mac_address(pdata, dev->dev_addr);
SMSC_TRACE(PROBE, "MAC Address is specified by configuration");
} else {
/* Try reading mac address from device. if EEPROM is present
@ -2036,7 +2061,7 @@ static int __devinit smsc911x_drv_probe(struct platform_device *pdev)
} else {
/* eeprom values are invalid, generate random MAC */
random_ether_addr(dev->dev_addr);
smsc911x_set_mac_address(pdata, dev->dev_addr);
smsc911x_set_hw_mac_address(pdata, dev->dev_addr);
SMSC_TRACE(PROBE,
"MAC Address is set to random_ether_addr");
}