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>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 14e1f4015a72..fcfa1bf776a7 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -729,7 +729,7 @@ static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
         } else
                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 
-        if (compare_ether_addr(mac, dev->dev_addr) == 0)
+        if (compare_ether_addr(mac, sdata->vif.addr) == 0)
                 return -EINVAL;
 
         if (is_multicast_ether_addr(mac))