cfg80211: restrict AP beacon intervals
Multiple virtual AP interfaces can currently try
to use different beacon intervals, but that just
leads to problems since it won't actually be done
that way by drivers. Return an error in this case
to make sure it won't be done wrong.
Also, ignore attempts to change the DTIM period
or beacon interval during the lifetime of the BSS.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/wireless/core.h b/net/wireless/core.h
index e3f7b1d..fd9135f 100644
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -433,6 +433,9 @@
u16 cfg80211_calculate_bitrate(struct rate_info *rate);
+int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev,
+ u32 beacon_int);
+
#ifdef CONFIG_CFG80211_DEVELOPER_WARNINGS
#define CFG80211_DEV_WARN_ON(cond) WARN_ON(cond)
#else
