nl80211: only allow adding stations to running vlan interfaces
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 5c8b3bfa..37264d5 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -1821,7 +1821,7 @@
}
/*
- * Get vlan interface making sure it is on the right wiphy.
+ * Get vlan interface making sure it is running and on the right wiphy.
*/
static int get_vlan(struct genl_info *info,
struct cfg80211_registered_device *rdev,
@@ -1839,6 +1839,8 @@
return -EINVAL;
if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy)
return -EINVAL;
+ if (!netif_running(*vlan))
+ return -ENETDOWN;
}
return 0;
}