{nl,cfg,mac}80211: let userspace set RANN interval

Allow userspace to set Root Announcement Interval for our mesh
interface. Also, RANN interval is now in proper units of TUs.

Signed-off-by: Javier Cardona <javier@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
index 89dec16b..20353bb 100644
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h
@@ -1861,6 +1861,9 @@
  * @NL80211_MESHCONF_ELEMENT_TTL: specifies the value of TTL field set at a
  * source mesh point for path selection elements.
  *
+ * @NL80211_MESHCONF_HWMP_RANN_INTERVAL:  The interval of time (in TUs) between
+ * root announcements are transmitted.
+ *
  * @NL80211_MESHCONF_ATTR_MAX: highest possible mesh configuration attribute
  *
  * @__NL80211_MESHCONF_ATTR_AFTER_LAST: internal use
@@ -1882,6 +1885,7 @@
 	NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
 	NL80211_MESHCONF_HWMP_ROOTMODE,
 	NL80211_MESHCONF_ELEMENT_TTL,
+	NL80211_MESHCONF_HWMP_RANN_INTERVAL,
 
 	/* keep last */
 	__NL80211_MESHCONF_ATTR_AFTER_LAST,