cfg80211: disallow configuring unsupported interfaces
In order to force drivers to advertise their interface
types, don't just disallow creating new interfaces with
unadvertised types but also disallow setting them UP.
Additionally, add some validation on the operations the
drivers support.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/wireless/core.c b/net/wireless/core.c
index b5e2f6d..1a78b3c 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -331,8 +331,13 @@
struct cfg80211_registered_device *rdev;
int alloc_size;
- WARN_ON(!ops->add_key && ops->del_key);
- WARN_ON(ops->add_key && !ops->del_key);
+ WARN_ON(ops->add_key && (!ops->del_key || !ops->set_default_key));
+ WARN_ON(ops->auth && (!ops->assoc || !ops->deauth || !ops->disassoc));
+ WARN_ON(ops->connect && !ops->disconnect);
+ WARN_ON(ops->join_ibss && !ops->leave_ibss);
+ WARN_ON(ops->add_virtual_intf && !ops->del_virtual_intf);
+ WARN_ON(ops->add_station && !ops->del_station);
+ WARN_ON(ops->add_mpath && !ops->del_mpath);
alloc_size = sizeof(*rdev) + sizeof_priv;
@@ -687,6 +692,8 @@
mutex_destroy(&wdev->mtx);
break;
case NETDEV_PRE_UP:
+ if (!(wdev->wiphy->interface_modes & BIT(wdev->iftype)))
+ return notifier_from_errno(-EOPNOTSUPP);
if (rfkill_blocked(rdev->rfkill))
return notifier_from_errno(-ERFKILL);
break;