alloc_libipw
dev = alloc_libipw(sizeof(struct ipw2100_priv), 0);
priv->prom_net_dev = alloc_libipw(sizeof(struct ipw_prom_priv), 1);
net_dev = alloc_libipw(sizeof(struct ipw_priv), 0);
struct net_device *alloc_libipw(int sizeof_priv, int monitor);
EXPORT_SYMBOL(alloc_libipw);