mac802154: short address setter

A method to assign the IEEE802.15.4 short address was added to the
MIB implementation.
Signed-off-by: Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/mac802154/mac802154.h

@@ -108,6 +108,7 @@ netdev_tx_t mac802154_tx(struct mac802154_priv *priv, struct sk_buff *skb,
 			 u8 page, u8 chan);
 
 /* MIB callbacks */
+void mac802154_dev_set_short_addr(struct net_device *dev, u16 val);
 void mac802154_dev_set_ieee_addr(struct net_device *dev);
 u16 mac802154_dev_get_pan_id(const struct net_device *dev);
 void mac802154_dev_set_pan_id(struct net_device *dev, u16 val);

net/mac802154/mib.c

@@ -78,6 +78,23 @@ static void set_hw_addr_filt(struct net_device *dev, unsigned long changed)
 	return;
 }
 
+void mac802154_dev_set_short_addr(struct net_device *dev, u16 val)
+{
+	struct mac802154_sub_if_data *priv = netdev_priv(dev);
+
+	BUG_ON(dev->type != ARPHRD_IEEE802154);
+
+	spin_lock_bh(&priv->mib_lock);
+	priv->short_addr = val;
+	spin_unlock_bh(&priv->mib_lock);
+
+	if ((priv->hw->ops->set_hw_addr_filt) &&
+	    (priv->hw->hw.hw_filt.short_addr != priv->short_addr)) {
+		priv->hw->hw.hw_filt.short_addr = priv->short_addr;
+		set_hw_addr_filt(dev, IEEE802515_AFILT_SADDR_CHANGED);
+	}
+}
+
 void mac802154_dev_set_ieee_addr(struct net_device *dev)
 {
 	struct mac802154_sub_if_data *priv = netdev_priv(dev);