mac80211: validate new interface's beacon intervals
As part of interface combination checking, verify any new
interface's beacon intervals. In fact, just always add the
beacon interval since that's harmless.
With this patch, mac80211 is prepared for drivers that set
the min_beacon_int_gcd parameter in interface combinations.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 7f24bdc..ac59fbd 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -3326,6 +3326,16 @@
if (WARN_ON(iftype >= NUM_NL80211_IFTYPES))
return -EINVAL;
+ if (sdata->vif.type == NL80211_IFTYPE_AP ||
+ sdata->vif.type == NL80211_IFTYPE_MESH_POINT) {
+ /*
+ * always passing this is harmless, since it'll be the
+ * same value that cfg80211 finds if it finds the same
+ * interface ... and that's always allowed
+ */
+ params.new_beacon_int = sdata->vif.bss_conf.beacon_int;
+ }
+
/* Always allow software iftypes */
if (local->hw.wiphy->software_iftypes & BIT(iftype)) {
if (radar_detect)