mac80211: allow drivers to request DTIM period
Some features require knowing the DTIM period
before associating. This implements the ability
to wait for a beacon in mac80211 before assoc
to provide this value. It is optional since
most likely not all drivers will need this.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c
index 41635b2..41f20fb 100644
--- a/net/mac80211/scan.c
+++ b/net/mac80211/scan.c
@@ -114,6 +114,10 @@
bss->dtim_period = tim_ie->dtim_period;
}
+ /* If the beacon had no TIM IE, or it was invalid, use 1 */
+ if (beacon && !bss->dtim_period)
+ bss->dtim_period = 1;
+
/* replace old supported rates if we get new values */
srlen = 0;
if (elems->supp_rates) {