mac80211: implement RANN processing and forwarding

Process the RANN (Root Annoucement) Frame and try to find the HWMP
root station by sending a PREQ.

Signed-off-by: Rui Paulo <rpaulo@gmail.com>
Signed-off-by: Javier Cardona <javier@cozybit.com>
Reviewed-by: Andrey Yurovsky <andrey@cozybit.com>
Tested-by: Brian Cavagnolo <brian@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 19b0c12..2a7d3d4 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -804,6 +804,7 @@
 	u8 *preq;
 	u8 *prep;
 	u8 *perr;
+	struct ieee80211_rann_ie *rann;
 	u8 *ch_switch_elem;
 	u8 *country_elem;
 	u8 *pwr_constr_elem;