[HOSTAP]: set netdev type before registering AP interface

As detailed at https://bugs.gentoo.org/159646 hostap with hostapd confuses
udev by presenting 2 interfaces with the same MAC address. Also, at the time
of detection, the 'type' attribute is 1, identical to other hostap interfaces.

The AP interface is supposed to have type ARPHRD_IEEE80211 (801), but this is
not set until after registration.

Setting it before register_netdev() is called allows us to avoid this
confusion. We can do this by propogating the HOSTAP_INTERFACE type through
to hostap_setup_dev().

Signed-off-by: Daniel Drake <dsd@gentoo.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/wireless/hostap/hostap.h

@@ -34,7 +34,7 @@ extern const struct header_ops hostap_80211_ops;
 int hostap_80211_get_hdrlen(u16 fc);
 struct net_device_stats *hostap_get_stats(struct net_device *dev);
 void hostap_setup_dev(struct net_device *dev, local_info_t *local,
-		      int main_dev);
+		      int type);
 void hostap_set_multicast_list_queue(struct work_struct *work);
 int hostap_set_hostapd(local_info_t *local, int val, int rtnl_locked);
 int hostap_set_hostapd_sta(local_info_t *local, int val, int rtnl_locked);

drivers/net/wireless/hostap/hostap_hw.c

@@ -3257,7 +3257,7 @@ while (0)
 
 	INIT_LIST_HEAD(&local->bss_list);
 
-	hostap_setup_dev(dev, local, 1);
+	hostap_setup_dev(dev, local, HOSTAP_INTERFACE_MASTER);
 
 	dev->hard_start_xmit = hostap_master_start_xmit;
 	dev->type = ARPHRD_IEEE80211;

drivers/net/wireless/hostap/hostap_main.c

@@ -73,7 +73,7 @@ struct net_device * hostap_add_interface(struct local_info *local,
 	dev->mem_start = mdev->mem_start;
 	dev->mem_end = mdev->mem_end;
 
-	hostap_setup_dev(dev, local, 0);
+	hostap_setup_dev(dev, local, type);
 	dev->destructor = free_netdev;
 
 	sprintf(dev->name, "%s%s", prefix, name);
@@ -857,7 +857,7 @@ const struct header_ops hostap_80211_ops = {
 EXPORT_SYMBOL(hostap_80211_ops);
 
 void hostap_setup_dev(struct net_device *dev, local_info_t *local,
-		      int main_dev)
+		      int type)
 {
 	struct hostap_interface *iface;
 
@@ -877,15 +877,22 @@ void hostap_setup_dev(struct net_device *dev, local_info_t *local,
 	dev->do_ioctl = hostap_ioctl;
 	dev->open = prism2_open;
 	dev->stop = prism2_close;
-	dev->hard_start_xmit = hostap_data_start_xmit;
 	dev->set_mac_address = prism2_set_mac_address;
 	dev->set_multicast_list = hostap_set_multicast_list;
 	dev->change_mtu = prism2_change_mtu;
 	dev->tx_timeout = prism2_tx_timeout;
 	dev->watchdog_timeo = TX_TIMEOUT;
 
+	if (type == HOSTAP_INTERFACE_AP) {
+		dev->hard_start_xmit = hostap_mgmt_start_xmit;
+		dev->type = ARPHRD_IEEE80211;
+		dev->header_ops = &hostap_80211_ops;
+	} else {
+		dev->hard_start_xmit = hostap_data_start_xmit;
+	}
+
 	dev->mtu = local->mtu;
-	if (!main_dev) {
+	if (type != HOSTAP_INTERFACE_MASTER) {
 		/* use main radio device queue */
 		dev->tx_queue_len = 0;
 	}
@@ -910,10 +917,6 @@ static int hostap_enable_hostapd(local_info_t *local, int rtnl_locked)
 	if (local->apdev == NULL)
 		return -ENOMEM;
 
-	local->apdev->hard_start_xmit = hostap_mgmt_start_xmit;
-	local->apdev->type = ARPHRD_IEEE80211;
-	local->apdev->header_ops = &hostap_80211_ops;
-
 	return 0;
 }