Allow setting mac80211 interface into ad-hoc mode (#3247)

SVN-Revision: 10677

package/mac80211/files/lib/wifi/mac80211.sh

@@ -67,6 +67,11 @@ enable_mac80211() {
 		[ "$first" = 1 ] && {
 			# only need to change freq band and channel on the first vif
 			iwconfig "$ifname" channel "$channel" >/dev/null 2>/dev/null
+			if [ "$mode" = adhoc ]; then
+				iwlist "$ifname" scan >/dev/null 2>/dev/null
+				sleep 1
+				iwconfig "$ifname" mode ad-hoc >/dev/null 2>/dev/null
+			fi
 			ifconfig "$ifname" up
 			sleep 1
 			iwconfig "$ifname" channel "$channel" >/dev/null 2>/dev/null