Commit 0b20633d authored by Johannes Berg's avatar Johannes Berg Committed by John W. Linville
Browse files

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: default avatarJohannes Berg <johannes@sipsolutions.net>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 79c97e97

net/wireless/core.c

+9 −2
Original line number Diff line number Diff line
@@ -331,8 +331,13 @@ struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv) 
	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 @@ static int cfg80211_netdev_notifier_call(struct notifier_block * nb, 
		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;

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