---

yaml
---
r: 108025
b: refs/heads/master
c: e32f85f
h: refs/heads/master
i:
  108023: 139df96
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: eda0c003d1ff14c99d8476b482377ccfaf967b6c
+refs/heads/master: e32f85f7b917456265d4c30d15f734c4912cfa6a

trunk/net/mac80211/mesh.h

@@ -214,8 +214,7 @@ void ieee80211s_stop(void);
 void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata);
 
 /* Mesh paths */
-int mesh_nexthop_lookup(u8 *next_hop, struct sk_buff *skb,
-		struct net_device *dev);
+int mesh_nexthop_lookup(struct sk_buff *skb, struct net_device *dev);
 void mesh_path_start_discovery(struct net_device *dev);
 struct mesh_path *mesh_path_lookup(u8 *dst, struct net_device *dev);
 struct mesh_path *mesh_path_lookup_by_idx(int idx, struct net_device *dev);
@@ -286,6 +285,4 @@ static inline void mesh_path_activate(struct mesh_path *mpath)
 #define mesh_allocated	0
 #endif
 
-#define MESH_PREQ(skb)	(skb->cb + 30)
-
 #endif /* IEEE80211S_H */

trunk/net/mac80211/mesh_hwmp.c

@@ -758,29 +758,30 @@ void mesh_path_start_discovery(struct net_device *dev)
 /**
  * ieee80211s_lookup_nexthop - put the appropriate next hop on a mesh frame
  *
- * @next_hop: output argument for next hop address
- * @skb: frame to be sent
+ * @skb: 802.11 frame to be sent
  * @dev: network device the frame will be sent through
+ * @fwd_frame: true if this frame was originally from a different host
  *
  * Returns: 0 if the next hop was found. Nonzero otherwise. If no next hop is
  * found, the function will start a path discovery and queue the frame so it is
  * sent when the path is resolved. This means the caller must not free the skb
  * in this case.
  */
-int mesh_nexthop_lookup(u8 *next_hop, struct sk_buff *skb,
-		struct net_device *dev)
+int mesh_nexthop_lookup(struct sk_buff *skb, struct net_device *dev)
 {
 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 	struct sk_buff *skb_to_free = NULL;
 	struct mesh_path *mpath;
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+	u8 *dst_addr = hdr->addr3;
 	int err = 0;
 
 	rcu_read_lock();
-	mpath = mesh_path_lookup(skb->data, dev);
+	mpath = mesh_path_lookup(dst_addr, dev);
 
 	if (!mpath) {
-		mesh_path_add(skb->data, dev);
-		mpath = mesh_path_lookup(skb->data, dev);
+		mesh_path_add(dst_addr, dev);
+		mpath = mesh_path_lookup(dst_addr, dev);
 		if (!mpath) {
 			dev_kfree_skb(skb);
 			sdata->u.sta.mshstats.dropped_frames_no_route++;
@@ -792,13 +793,13 @@ int mesh_nexthop_lookup(u8 *next_hop, struct sk_buff *skb,
 	if (mpath->flags & MESH_PATH_ACTIVE) {
 		if (time_after(jiffies, mpath->exp_time -
 			msecs_to_jiffies(sdata->u.sta.mshcfg.path_refresh_time))
-				&& skb->pkt_type != PACKET_OTHERHOST
+				&& !memcmp(dev->dev_addr, hdr->addr4, ETH_ALEN)
 				&& !(mpath->flags & MESH_PATH_RESOLVING)
 				&& !(mpath->flags & MESH_PATH_FIXED)) {
 			mesh_queue_preq(mpath,
 					PREQ_Q_F_START | PREQ_Q_F_REFRESH);
 		}
-		memcpy(next_hop, mpath->next_hop->addr,
+		memcpy(hdr->addr1, mpath->next_hop->addr,
 				ETH_ALEN);
 	} else {
 		if (!(mpath->flags & MESH_PATH_RESOLVING)) {

trunk/net/mac80211/mesh_pathtbl.c

@@ -388,18 +388,15 @@ void mesh_path_tx_pending(struct mesh_path *mpath)
 void mesh_path_discard_frame(struct sk_buff *skb, struct net_device *dev)
 {
 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 	struct mesh_path *mpath;
 	u32 dsn = 0;
 
-	if (skb->pkt_type == PACKET_OTHERHOST) {
-		struct ieee80211s_hdr *prev_meshhdr;
-		int mshhdrlen;
+	if (memcmp(hdr->addr4, dev->dev_addr, ETH_ALEN) != 0) {
 		u8 *ra, *da;
 
-		prev_meshhdr = ((struct ieee80211s_hdr *)skb->cb);
-		mshhdrlen = ieee80211_get_mesh_hdrlen(prev_meshhdr);
-		da = skb->data;
-		ra = MESH_PREQ(skb);
+		da = hdr->addr3;
+		ra = hdr->addr2;
 		mpath = mesh_path_lookup(da, dev);
 		if (mpath)
 			dsn = ++mpath->dsn;

trunk/net/mac80211/rx.c

@@ -1109,20 +1109,9 @@ ieee80211_data_to_8023(struct ieee80211_rx_data *rx)
 
 	hdrlen = ieee80211_get_hdrlen(fc);
 
-	if (ieee80211_vif_is_mesh(&sdata->vif)) {
-		int meshhdrlen = ieee80211_get_mesh_hdrlen(
+	if (ieee80211_vif_is_mesh(&sdata->vif))
+		hdrlen += ieee80211_get_mesh_hdrlen(
 				(struct ieee80211s_hdr *) (skb->data + hdrlen));
-		/* Copy on cb:
-		 *  - mesh header: to be used for mesh forwarding
-		 * decision. It will also be used as mesh header template at
-		 * tx.c:ieee80211_subif_start_xmit() if interface
-		 * type is mesh and skb->pkt_type == PACKET_OTHERHOST
-		 *  - ta: to be used if a RERR needs to be sent.
-		 */
-		memcpy(skb->cb, skb->data + hdrlen, meshhdrlen);
-		memcpy(MESH_PREQ(skb), hdr->addr2, ETH_ALEN);
-		hdrlen += meshhdrlen;
-	}
 
 	/* convert IEEE 802.11 header + possible LLC headers into Ethernet
 	 * header
@@ -1269,38 +1258,6 @@ ieee80211_deliver_skb(struct ieee80211_rx_data *rx)
 		}
 	}
 
-	/* Mesh forwarding */
-	if (ieee80211_vif_is_mesh(&sdata->vif)) {
-		u8 *mesh_ttl = &((struct ieee80211s_hdr *)skb->cb)->ttl;
-		(*mesh_ttl)--;
-
-		if (is_multicast_ether_addr(skb->data)) {
-			if (*mesh_ttl > 0) {
-				xmit_skb = skb_copy(skb, GFP_ATOMIC);
-				if (xmit_skb)
-					xmit_skb->pkt_type = PACKET_OTHERHOST;
-				else if (net_ratelimit())
-					printk(KERN_DEBUG "%s: failed to clone "
-					       "multicast frame\n", dev->name);
-			} else
-				IEEE80211_IFSTA_MESH_CTR_INC(&sdata->u.sta,
-							     dropped_frames_ttl);
-		} else if (skb->pkt_type != PACKET_OTHERHOST &&
-			compare_ether_addr(dev->dev_addr, skb->data) != 0) {
-			if (*mesh_ttl == 0) {
-				IEEE80211_IFSTA_MESH_CTR_INC(&sdata->u.sta,
-							     dropped_frames_ttl);
-				dev_kfree_skb(skb);
-				skb = NULL;
-			} else {
-				xmit_skb = skb;
-				xmit_skb->pkt_type = PACKET_OTHERHOST;
-				if (!(dev->flags & IFF_PROMISC))
-					skb  = NULL;
-			}
-		}
-	}
-
 	if (skb) {
 		/* deliver to local stack */
 		skb->protocol = eth_type_trans(skb, dev);
@@ -1430,6 +1387,63 @@ ieee80211_rx_h_amsdu(struct ieee80211_rx_data *rx)
 	return RX_QUEUED;
 }
 
+static ieee80211_rx_result debug_noinline
+ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx)
+{
+	struct ieee80211_hdr *hdr;
+	struct ieee80211s_hdr *mesh_hdr;
+	unsigned int hdrlen;
+	struct sk_buff *skb = rx->skb, *fwd_skb;
+
+	hdr = (struct ieee80211_hdr *) skb->data;
+	hdrlen = ieee80211_hdrlen(hdr->frame_control);
+	mesh_hdr = (struct ieee80211s_hdr *) (skb->data + hdrlen);
+
+	if (!ieee80211_is_data(hdr->frame_control))
+		return RX_CONTINUE;
+
+	if (!mesh_hdr->ttl)
+		/* illegal frame */
+		return RX_DROP_MONITOR;
+
+	if (compare_ether_addr(rx->dev->dev_addr, hdr->addr3) == 0)
+		return RX_CONTINUE;
+
+	mesh_hdr->ttl--;
+
+	if (rx->flags & IEEE80211_RX_RA_MATCH) {
+		if (!mesh_hdr->ttl)
+			IEEE80211_IFSTA_MESH_CTR_INC(&rx->sdata->u.sta,
+						     dropped_frames_ttl);
+		else {
+			struct ieee80211_hdr *fwd_hdr;
+			fwd_skb = skb_copy(skb, GFP_ATOMIC);
+
+			if (!fwd_skb && net_ratelimit())
+				printk(KERN_DEBUG "%s: failed to clone mesh frame\n",
+						   rx->dev->name);
+
+			fwd_hdr =  (struct ieee80211_hdr *) fwd_skb->data;
+			/*
+			 * Save TA to addr1 to send TA a path error if a
+			 * suitable next hop is not found
+			 */
+			memcpy(fwd_hdr->addr1, fwd_hdr->addr2, ETH_ALEN);
+			memcpy(fwd_hdr->addr2, rx->dev->dev_addr, ETH_ALEN);
+			fwd_skb->dev = rx->local->mdev;
+			fwd_skb->iif = rx->dev->ifindex;
+			dev_queue_xmit(fwd_skb);
+		}
+	}
+
+	if (is_multicast_ether_addr(hdr->addr3) ||
+	    rx->dev->flags & IFF_PROMISC)
+		return RX_CONTINUE;
+	else
+		return RX_DROP_MONITOR;
+}
+
+
 static ieee80211_rx_result debug_noinline
 ieee80211_rx_h_data(struct ieee80211_rx_data *rx)
 {
@@ -1663,10 +1677,12 @@ static void ieee80211_invoke_rx_handlers(struct ieee80211_sub_if_data *sdata,
 	rx->sdata = sdata;
 	rx->dev = sdata->dev;
 
-#define CALL_RXH(rxh)		\
-	res = rxh(rx);		\
-	if (res != RX_CONTINUE)	\
-		goto rxh_done;
+#define CALL_RXH(rxh)			\
+	do {				\
+		res = rxh(rx);		\
+		if (res != RX_CONTINUE)	\
+			goto rxh_done;  \
+	} while (0);
 
 	CALL_RXH(ieee80211_rx_h_passive_scan)
 	CALL_RXH(ieee80211_rx_h_check)
@@ -1678,6 +1694,8 @@ static void ieee80211_invoke_rx_handlers(struct ieee80211_sub_if_data *sdata,
 	/* must be after MMIC verify so header is counted in MPDU mic */
 	CALL_RXH(ieee80211_rx_h_remove_qos_control)
 	CALL_RXH(ieee80211_rx_h_amsdu)
+	if (ieee80211_vif_is_mesh(&sdata->vif))
+		CALL_RXH(ieee80211_rx_h_mesh_fwding);
 	CALL_RXH(ieee80211_rx_h_data)
 	CALL_RXH(ieee80211_rx_h_ctrl)
 	CALL_RXH(ieee80211_rx_h_mgmt)

trunk/net/mac80211/tx.c

@@ -1301,6 +1301,7 @@ int ieee80211_master_start_xmit(struct sk_buff *skb,
 				struct net_device *dev)
 {
 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 	struct net_device *odev = NULL;
 	struct ieee80211_sub_if_data *osdata;
 	int headroom;
@@ -1328,6 +1329,20 @@ int ieee80211_master_start_xmit(struct sk_buff *skb,
 
 	osdata = IEEE80211_DEV_TO_SUB_IF(odev);
 
+	if (ieee80211_vif_is_mesh(&osdata->vif) &&
+	    ieee80211_is_data(hdr->frame_control)) {
+		if (ieee80211_is_data(hdr->frame_control)) {
+			if (is_multicast_ether_addr(hdr->addr3))
+				memcpy(hdr->addr1, hdr->addr3, ETH_ALEN);
+			else
+				if (mesh_nexthop_lookup(skb, odev))
+					return  0;
+			if (memcmp(odev->dev_addr, hdr->addr4, ETH_ALEN) != 0)
+				IEEE80211_IFSTA_MESH_CTR_INC(&osdata->u.sta,
+							     fwded_frames);
+		}
+	}
+
 	may_encrypt = !skb->do_not_encrypt;
 
 	headroom = osdata->local->tx_headroom;
@@ -1472,30 +1487,17 @@ int ieee80211_subif_start_xmit(struct sk_buff *skb,
 	case IEEE80211_IF_TYPE_MESH_POINT:
 		fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
 		/* RA TA DA SA */
-		if (is_multicast_ether_addr(skb->data))
-			memcpy(hdr.addr1, skb->data, ETH_ALEN);
-		else if (mesh_nexthop_lookup(hdr.addr1, skb, dev))
-				return 0;
+		memset(hdr.addr1, 0, ETH_ALEN);
 		memcpy(hdr.addr2, dev->dev_addr, ETH_ALEN);
 		memcpy(hdr.addr3, skb->data, ETH_ALEN);
 		memcpy(hdr.addr4, skb->data + ETH_ALEN, ETH_ALEN);
-		if (skb->pkt_type == PACKET_OTHERHOST) {
-			/* Forwarded frame, keep mesh ttl and seqnum */
-			struct ieee80211s_hdr *prev_meshhdr;
-			prev_meshhdr = ((struct ieee80211s_hdr *)skb->cb);
-			meshhdrlen = ieee80211_get_mesh_hdrlen(prev_meshhdr);
-			memcpy(&mesh_hdr, prev_meshhdr, meshhdrlen);
-			sdata->u.sta.mshstats.fwded_frames++;
-		} else {
-			if (!sdata->u.sta.mshcfg.dot11MeshTTL) {
-				/* Do not send frames with mesh_ttl == 0 */
-				sdata->u.sta.mshstats.dropped_frames_ttl++;
-				ret = 0;
-				goto fail;
-			}
-			meshhdrlen = ieee80211_new_mesh_header(&mesh_hdr,
-							       sdata);
+		if (!sdata->u.sta.mshcfg.dot11MeshTTL) {
+			/* Do not send frames with mesh_ttl == 0 */
+			sdata->u.sta.mshstats.dropped_frames_ttl++;
+			ret = 0;
+			goto fail;
 		}
+		meshhdrlen = ieee80211_new_mesh_header(&mesh_hdr, sdata);
 		hdrlen = 30;
 		break;
 #endif
@@ -1543,7 +1545,8 @@ int ieee80211_subif_start_xmit(struct sk_buff *skb,
 	 * Drop unicast frames to unauthorised stations unless they are
 	 * EAPOL frames from the local station.
 	 */
-	if (unlikely(!is_multicast_ether_addr(hdr.addr1) &&
+	if (!ieee80211_vif_is_mesh(&sdata->vif) &&
+		unlikely(!is_multicast_ether_addr(hdr.addr1) &&
 		      !(sta_flags & WLAN_STA_AUTHORIZED) &&
 		      !(ethertype == ETH_P_PAE &&
 		       compare_ether_addr(dev->dev_addr,