From fb3b596d3c4a8b6e3867079794856637db4e5283 Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Mon, 8 Dec 2014 15:59:18 -0800 Subject: [PATCH] net: systemport: allow changing MAC address Hook a ndo_set_mac_address callback, update the internal Ethernet MAC in the netdevice structure, and finally write that address down to the UniMAC registers. If the interface is down, and most likely clock gated, we do not update the registers but just the local copy, such that next ndo_open() call will effectively write down the address. Signed-off-by: Florian Fainelli Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bcmsysport.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/drivers/net/ethernet/broadcom/bcmsysport.c b/drivers/net/ethernet/broadcom/bcmsysport.c index c1d255972dae..a91a8c263391 100644 --- a/drivers/net/ethernet/broadcom/bcmsysport.c +++ b/drivers/net/ethernet/broadcom/bcmsysport.c @@ -1409,6 +1409,27 @@ static void topctrl_flush(struct bcm_sysport_priv *priv) topctrl_writel(priv, 0, TX_FLUSH_CNTL); } +static int bcm_sysport_change_mac(struct net_device *dev, void *p) +{ + struct bcm_sysport_priv *priv = netdev_priv(dev); + struct sockaddr *addr = p; + + if (!is_valid_ether_addr(addr->sa_data)) + return -EINVAL; + + memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); + + /* interface is disabled, changes to MAC will be reflected on next + * open call + */ + if (!netif_running(dev)) + return 0; + + umac_set_hw_addr(priv, dev->dev_addr); + + return 0; +} + static void bcm_sysport_netif_start(struct net_device *dev) { struct bcm_sysport_priv *priv = netdev_priv(dev); @@ -1628,6 +1649,7 @@ static const struct net_device_ops bcm_sysport_netdev_ops = { .ndo_stop = bcm_sysport_stop, .ndo_set_features = bcm_sysport_set_features, .ndo_set_rx_mode = bcm_sysport_set_rx_mode, + .ndo_set_mac_address = bcm_sysport_change_mac, }; #define REV_FMT "v%2x.%02x" -- 2.20.1