1 files changed, 22 insertions, 35 deletions

diff --git a/net/wireless/util.c b/net/wireless/util.c
index d39c37104ae2..e5872ff2c27c 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -11,6 +11,7 @@
 #include <net/ip.h>
 #include <net/dsfield.h>
 #include <linux/if_vlan.h>
+#include <linux/mpls.h>
 #include "core.h"
 #include "rdev-ops.h"
 
@@ -717,6 +718,21 @@ unsigned int cfg80211_classify8021d(struct sk_buff *skb,
 	case htons(ETH_P_IPV6):
 		dscp = ipv6_get_dsfield(ipv6_hdr(skb)) & 0xfc;
 		break;
+	case htons(ETH_P_MPLS_UC):
+	case htons(ETH_P_MPLS_MC): {
+		struct mpls_label mpls_tmp, *mpls;
+
+		mpls = skb_header_pointer(skb, sizeof(struct ethhdr),
+					  sizeof(*mpls), &mpls_tmp);
+		if (!mpls)
+			return 0;
+
+		return (ntohl(mpls->entry) & MPLS_LS_TC_MASK)
+			>> MPLS_LS_TC_SHIFT;
+	}
+	case htons(ETH_P_80221):
+		/* 802.21 is always network control traffic */
+		return 7;
 	default:
 		return 0;
 	}
@@ -820,7 +836,8 @@ void cfg80211_process_wdev_events(struct wireless_dev *wdev)
 						ev->dc.reason, true);
 			break;
 		case EVENT_IBSS_JOINED:
-			__cfg80211_ibss_joined(wdev->netdev, ev->ij.bssid);
+			__cfg80211_ibss_joined(wdev->netdev, ev->ij.bssid,
+					       ev->ij.channel);
 			break;
 		}
 		wdev_unlock(wdev);
@@ -837,7 +854,6 @@ void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev)
 	struct wireless_dev *wdev;
 
 	ASSERT_RTNL();
-	ASSERT_RDEV_LOCK(rdev);
 
 	list_for_each_entry(wdev, &rdev->wdev_list, list)
 		cfg80211_process_wdev_events(wdev);
@@ -850,7 +866,7 @@ int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
 	int err;
 	enum nl80211_iftype otype = dev->ieee80211_ptr->iftype;
 
-	ASSERT_RDEV_LOCK(rdev);
+	ASSERT_RTNL();
 
 	/* don't support changing VLANs, you just re-create them */
 	if (otype == NL80211_IFTYPE_AP_VLAN)
@@ -885,7 +901,7 @@ int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
 
 		switch (otype) {
 		case NL80211_IFTYPE_AP:
-			cfg80211_stop_ap(rdev, dev);
+			cfg80211_stop_ap(rdev, dev, true);
 			break;
 		case NL80211_IFTYPE_ADHOC:
 			cfg80211_leave_ibss(rdev, dev, false);
@@ -1268,7 +1284,6 @@ int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
 	enum cfg80211_chan_mode chmode;
 	int num_different_channels = 0;
 	int total = 1;
-	bool radar_required = false;
 	int i, j;
 
 	ASSERT_RTNL();
@@ -1276,35 +1291,7 @@ int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
 	if (WARN_ON(hweight32(radar_detect) > 1))
 		return -EINVAL;
 
-	switch (iftype) {
-	case NL80211_IFTYPE_ADHOC:
-	case NL80211_IFTYPE_AP:
-	case NL80211_IFTYPE_AP_VLAN:
-	case NL80211_IFTYPE_MESH_POINT:
-	case NL80211_IFTYPE_P2P_GO:
-	case NL80211_IFTYPE_WDS:
-		/* if the interface could potentially choose a DFS channel,
-		 * then mark DFS as required.
-		 */
-		if (!chan) {
-			if (chanmode != CHAN_MODE_UNDEFINED && radar_detect)
-				radar_required = true;
-			break;
-		}
-		radar_required = !!(chan->flags & IEEE80211_CHAN_RADAR);
-		break;
-	case NL80211_IFTYPE_P2P_CLIENT:
-	case NL80211_IFTYPE_STATION:
-	case NL80211_IFTYPE_P2P_DEVICE:
-	case NL80211_IFTYPE_MONITOR:
-		break;
-	case NUM_NL80211_IFTYPES:
-	case NL80211_IFTYPE_UNSPECIFIED:
-	default:
-		return -EINVAL;
-	}
-
-	if (radar_required && !radar_detect)
+	if (WARN_ON(iftype >= NUM_NL80211_IFTYPES))
 		return -EINVAL;
 
 	/* Always allow software iftypes */
@@ -1356,7 +1343,7 @@ int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
 		 */
 		mutex_lock_nested(&wdev_iter->mtx, 1);
 		__acquire(wdev_iter->mtx);
-		cfg80211_get_chan_state(wdev_iter, &ch, &chmode);
+		cfg80211_get_chan_state(wdev_iter, &ch, &chmode, &radar_detect);
 		wdev_unlock(wdev_iter);
 
 		switch (chmode) {