mac80211: reduce reliance on netdev

For bluetooth 3, we will most likely not have
a netdev for a virtual interface (sdata), so
prepare for that by reducing the reliance on
having a netdev. This patch moves the name
and address fields into the sdata struct and
uses them from there all over. Some work is
needed to keep them sync'ed, but that's not
a lot of work and in slow paths anyway.

In doing so, this also reduces the number of
pointer dereferences in many places, because
of things like sdata->dev->dev_addr becoming
sdata->vif.addr.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

net/mac80211/mesh.c

diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
index c0fe464..63299b7 100644
--- a/net/mac80211/mesh.c
+++ b/net/mac80211/mesh.c
@@ -457,7 +457,7 @@
 
 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
 	printk(KERN_DEBUG "%s: running mesh housekeeping\n",
-	       sdata->dev->name);
+	       sdata->name);
 #endif
 
 	ieee80211_sta_expire(sdata, IEEE80211_MESH_PEER_INACTIVITY_LIMIT);
@@ -565,7 +565,7 @@
 
 	/* ignore ProbeResp to foreign address */
 	if (stype == IEEE80211_STYPE_PROBE_RESP &&
-	    compare_ether_addr(mgmt->da, sdata->dev->dev_addr))
+	    compare_ether_addr(mgmt->da, sdata->vif.addr))
 		return;
 
 	baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt;