mac80211: copy chandef from AP vif to VLANs
Instead of keeping track of all those special cases where
VLAN interfaces have no bss_conf.chandef, just make sure
they have the same as the AP interface they belong to.
Among others, this fixes a crash getting a VLAN's channel
from userspace since a NULL channel is returned as a good
result (return value 0) for VLANs since the commit below.
Cc: stable@vger.kernel.org [3.18 only]
Fixes: c12bc4885f4b3 ("mac80211: return the vif's chandef in ieee80211_cfg_get_channel()")
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
[rewrite commit log]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 82473d9..96c4572c 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -520,6 +520,7 @@
sdata->vif.cab_queue = master->vif.cab_queue;
memcpy(sdata->vif.hw_queue, master->vif.hw_queue,
sizeof(sdata->vif.hw_queue));
+ sdata->vif.bss_conf.chandef = master->vif.bss_conf.chandef;
break;
}
case NL80211_IFTYPE_AP: