Index: linux-2.6.21.7/include/linux/netdevice.h =================================================================== --- linux-2.6.21.7.orig/include/linux/netdevice.h +++ linux-2.6.21.7/include/linux/netdevice.h @@ -532,6 +532,8 @@ struct net_device struct device dev; /* space for optional statistics and wireless sysfs groups */ struct attribute_group *sysfs_groups[3]; + + void *ieee80211_ptr; }; #define to_net_dev(d) container_of(d, struct net_device, dev)