mac80211: add mesh interface type

This adds the mesh interface type.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

include/net/mac80211.h

@@ -443,6 +443,7 @@ enum ieee80211_if_types {
 	IEEE80211_IF_TYPE_AP,
 	IEEE80211_IF_TYPE_STA,
 	IEEE80211_IF_TYPE_IBSS,
+	IEEE80211_IF_TYPE_MESH_POINT,
 	IEEE80211_IF_TYPE_MNTR,
 	IEEE80211_IF_TYPE_WDS,
 	IEEE80211_IF_TYPE_VLAN,

net/mac80211/ieee80211.c

@@ -258,6 +258,7 @@ static int ieee80211_open(struct net_device *dev)
 	case IEEE80211_IF_TYPE_STA:
 	case IEEE80211_IF_TYPE_MNTR:
 	case IEEE80211_IF_TYPE_IBSS:
+	case IEEE80211_IF_TYPE_MESH_POINT:
 		/* no special treatment */
 		break;
 	case IEEE80211_IF_TYPE_INVALID:

net/mac80211/ieee80211_iface.c

@@ -235,6 +235,7 @@ void ieee80211_if_reinit(struct net_device *dev)
 #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
 		}
 		break;
+	case IEEE80211_IF_TYPE_MESH_POINT:
 	case IEEE80211_IF_TYPE_STA:
 	case IEEE80211_IF_TYPE_IBSS:
 		kfree(sdata->u.sta.extra_ie);

net/mac80211/rx.c

@@ -1713,6 +1713,16 @@ static int prepare_for_handlers(struct ieee80211_sub_if_data *sdata,
 			rx->sta = ieee80211_ibss_add_sta(sdata->dev, rx->skb,
 							 bssid, hdr->addr2);
 		break;
+	case IEEE80211_IF_TYPE_MESH_POINT:
+		if (!multicast &&
+		    compare_ether_addr(sdata->dev->dev_addr,
+				       hdr->addr1) != 0) {
+			if (!(sdata->dev->flags & IFF_PROMISC))
+				return 0;
+
+			rx->flags &= ~IEEE80211_TXRXD_RXRA_MATCH;
+		}
+		break;
 	case IEEE80211_IF_TYPE_VLAN:
 	case IEEE80211_IF_TYPE_AP:
 		if (!bssid) {

net/mac80211/util.c

@@ -382,6 +382,7 @@ void ieee80211_iterate_active_interfaces(
 		case IEEE80211_IF_TYPE_STA:
 		case IEEE80211_IF_TYPE_IBSS:
 		case IEEE80211_IF_TYPE_WDS:
+		case IEEE80211_IF_TYPE_MESH_POINT:
 			break;
 		}
 		if (sdata->dev == local->mdev)