Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

This merges (3f509c6 netfilter: nf_nat_sip: fix incorrect handling
of EBUSY for RTCP expectation) to Patrick McHardy's IPv6 NAT changes.

120 files changed, 2941 insertions, 1313 deletions

diff --git a/net/8021q/vlan_core.c b/net/8021q/vlan_core.c
index 8ca533c95de0..b258da88f675 100644
--- a/net/8021q/vlan_core.c
+++ b/net/8021q/vlan_core.c
@@ -368,3 +368,9 @@ void vlan_vids_del_by_dev(struct net_device *dev,
 		vlan_vid_del(dev, vid_info->vid);
 }
 EXPORT_SYMBOL(vlan_vids_del_by_dev);
+
+bool vlan_uses_dev(const struct net_device *dev)
+{
+	return rtnl_dereference(dev->vlan_info) ? true : false;
+}
+EXPORT_SYMBOL(vlan_uses_dev);
diff --git a/net/appletalk/atalk_proc.c b/net/appletalk/atalk_proc.c
index b5b1a221c242..c30f3a0717fb 100644
--- a/net/appletalk/atalk_proc.c
+++ b/net/appletalk/atalk_proc.c
@@ -183,7 +183,8 @@ static int atalk_seq_socket_show(struct seq_file *seq, void *v)
 		   ntohs(at->dest_net), at->dest_node, at->dest_port,
 		   sk_wmem_alloc_get(s),
 		   sk_rmem_alloc_get(s),
-		   s->sk_state, SOCK_INODE(s->sk_socket)->i_uid);
+		   s->sk_state,
+		   from_kuid_munged(seq_user_ns(seq), sock_i_uid(s)));
 out:
 	return 0;
 }
diff --git a/net/atm/resources.c b/net/atm/resources.c
index 23f45ce6f351..0447d5d0b639 100644
--- a/net/atm/resources.c
+++ b/net/atm/resources.c
@@ -432,7 +432,7 @@ int atm_dev_ioctl(unsigned int cmd, void __user *arg, int compat)
 			size = dev->ops->ioctl(dev, cmd, buf);
 		}
 		if (size < 0) {
-			error = (size == -ENOIOCTLCMD ? -EINVAL : size);
+			error = (size == -ENOIOCTLCMD ? -ENOTTY : size);
 			goto done;
 		}
 	}
diff --git a/net/ax25/ax25_uid.c b/net/ax25/ax25_uid.c
index e3c579ba6325..957999e43ff7 100644
--- a/net/ax25/ax25_uid.c
+++ b/net/ax25/ax25_uid.c
@@ -51,14 +51,14 @@ int ax25_uid_policy;
 
 EXPORT_SYMBOL(ax25_uid_policy);
 
-ax25_uid_assoc *ax25_findbyuid(uid_t uid)
+ax25_uid_assoc *ax25_findbyuid(kuid_t uid)
 {
 	ax25_uid_assoc *ax25_uid, *res = NULL;
 	struct hlist_node *node;
 
 	read_lock(&ax25_uid_lock);
 	ax25_uid_for_each(ax25_uid, node, &ax25_uid_list) {
-		if (ax25_uid->uid == uid) {
+		if (uid_eq(ax25_uid->uid, uid)) {
 			ax25_uid_hold(ax25_uid);
 			res = ax25_uid;
 			break;
@@ -84,7 +84,7 @@ int ax25_uid_ioctl(int cmd, struct sockaddr_ax25 *sax)
 		read_lock(&ax25_uid_lock);
 		ax25_uid_for_each(ax25_uid, node, &ax25_uid_list) {
 			if (ax25cmp(&sax->sax25_call, &ax25_uid->call) == 0) {
-				res = ax25_uid->uid;
+				res = from_kuid_munged(current_user_ns(), ax25_uid->uid);
 				break;
 			}
 		}
@@ -93,9 +93,14 @@ int ax25_uid_ioctl(int cmd, struct sockaddr_ax25 *sax)
 		return res;
 
 	case SIOCAX25ADDUID:
+	{
+		kuid_t sax25_kuid;
 		if (!capable(CAP_NET_ADMIN))
 			return -EPERM;
-		user = ax25_findbyuid(sax->sax25_uid);
+		sax25_kuid = make_kuid(current_user_ns(), sax->sax25_uid);
+		if (!uid_valid(sax25_kuid))
+			return -EINVAL;
+		user = ax25_findbyuid(sax25_kuid);
 		if (user) {
 			ax25_uid_put(user);
 			return -EEXIST;
@@ -106,7 +111,7 @@ int ax25_uid_ioctl(int cmd, struct sockaddr_ax25 *sax)
 			return -ENOMEM;
 
 		atomic_set(&ax25_uid->refcount, 1);
-		ax25_uid->uid  = sax->sax25_uid;
+		ax25_uid->uid  = sax25_kuid;
 		ax25_uid->call = sax->sax25_call;
 
 		write_lock(&ax25_uid_lock);
@@ -114,7 +119,7 @@ int ax25_uid_ioctl(int cmd, struct sockaddr_ax25 *sax)
 		write_unlock(&ax25_uid_lock);
 
 		return 0;
-
+	}
 	case SIOCAX25DELUID:
 		if (!capable(CAP_NET_ADMIN))
 			return -EPERM;
@@ -172,7 +177,9 @@ static int ax25_uid_seq_show(struct seq_file *seq, void *v)
 		struct ax25_uid_assoc *pt;
 
 		pt = hlist_entry(v, struct ax25_uid_assoc, uid_node);
-		seq_printf(seq, "%6d %s\n", pt->uid, ax2asc(buf, &pt->call));
+		seq_printf(seq, "%6d %s\n",
+			from_kuid_munged(seq_user_ns(seq), pt->uid),
+			ax2asc(buf, &pt->call));
 	}
 	return 0;
 }
diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index e877af8bdd1e..df79300dcb7b 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -166,13 +166,15 @@ static void batadv_iv_ogm_send_to_if(struct batadv_forw_packet *forw_packet,
 	int16_t buff_pos;
 	struct batadv_ogm_packet *batadv_ogm_packet;
 	struct sk_buff *skb;
+	uint8_t *packet_pos;
 
 	if (hard_iface->if_status != BATADV_IF_ACTIVE)
 		return;
 
 	packet_num = 0;
 	buff_pos = 0;
-	batadv_ogm_packet = (struct batadv_ogm_packet *)forw_packet->skb->data;
+	packet_pos = forw_packet->skb->data;
+	batadv_ogm_packet = (struct batadv_ogm_packet *)packet_pos;
 
 	/* adjust all flags and log packets */
 	while (batadv_iv_ogm_aggr_packet(buff_pos, forw_packet->packet_len,
@@ -181,15 +183,17 @@ static void batadv_iv_ogm_send_to_if(struct batadv_forw_packet *forw_packet,
 		/* we might have aggregated direct link packets with an
 		 * ordinary base packet
 		 */
-		if ((forw_packet->direct_link_flags & (1 << packet_num)) &&
-		    (forw_packet->if_incoming == hard_iface))
+		if (forw_packet->direct_link_flags & BIT(packet_num) &&
+		    forw_packet->if_incoming == hard_iface)
 			batadv_ogm_packet->flags |= BATADV_DIRECTLINK;
 		else
 			batadv_ogm_packet->flags &= ~BATADV_DIRECTLINK;
 
-		fwd_str = (packet_num > 0 ? "Forwarding" : (forw_packet->own ?
-							    "Sending own" :
-							    "Forwarding"));
+		if (packet_num > 0 || !forw_packet->own)
+			fwd_str = "Forwarding";
+		else
+			fwd_str = "Sending own";
+
 		batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
 			   "%s %spacket (originator %pM, seqno %u, TQ %d, TTL %d, IDF %s, ttvn %d) on interface %s [%pM]\n",
 			   fwd_str, (packet_num > 0 ? "aggregated " : ""),
@@ -204,8 +208,8 @@ static void batadv_iv_ogm_send_to_if(struct batadv_forw_packet *forw_packet,
 		buff_pos += BATADV_OGM_HLEN;
 		buff_pos += batadv_tt_len(batadv_ogm_packet->tt_num_changes);
 		packet_num++;
-		batadv_ogm_packet = (struct batadv_ogm_packet *)
-					(forw_packet->skb->data + buff_pos);
+		packet_pos = forw_packet->skb->data + buff_pos;
+		batadv_ogm_packet = (struct batadv_ogm_packet *)packet_pos;
 	}
 
 	/* create clone because function is called more than once */
@@ -227,9 +231,10 @@ static void batadv_iv_ogm_emit(struct batadv_forw_packet *forw_packet)
 	struct batadv_hard_iface *primary_if = NULL;
 	struct batadv_ogm_packet *batadv_ogm_packet;
 	unsigned char directlink;
+	uint8_t *packet_pos;
 
-	batadv_ogm_packet = (struct batadv_ogm_packet *)
-						(forw_packet->skb->data);
+	packet_pos = forw_packet->skb->data;
+	batadv_ogm_packet = (struct batadv_ogm_packet *)packet_pos;
 	directlink = (batadv_ogm_packet->flags & BATADV_DIRECTLINK ? 1 : 0);
 
 	if (!forw_packet->if_incoming) {
@@ -454,6 +459,7 @@ static void batadv_iv_ogm_aggregate(struct batadv_forw_packet *forw_packet_aggr,
 				    int packet_len, bool direct_link)
 {
 	unsigned char *skb_buff;
+	unsigned long new_direct_link_flag;
 
 	skb_buff = skb_put(forw_packet_aggr->skb, packet_len);
 	memcpy(skb_buff, packet_buff, packet_len);
@@ -461,9 +467,10 @@ static void batadv_iv_ogm_aggregate(struct batadv_forw_packet *forw_packet_aggr,
 	forw_packet_aggr->num_packets++;
 
 	/* save packet direct link flag status */
-	if (direct_link)
-		forw_packet_aggr->direct_link_flags |=
-			(1 << forw_packet_aggr->num_packets);
+	if (direct_link) {
+		new_direct_link_flag = BIT(forw_packet_aggr->num_packets);
+		forw_packet_aggr->direct_link_flags |= new_direct_link_flag;
+	}
 }
 
 static void batadv_iv_ogm_queue_add(struct batadv_priv *bat_priv,
@@ -586,6 +593,8 @@ static void batadv_iv_ogm_schedule(struct batadv_hard_iface *hard_iface)
 	struct batadv_ogm_packet *batadv_ogm_packet;
 	struct batadv_hard_iface *primary_if;
 	int vis_server, tt_num_changes = 0;
+	uint32_t seqno;
+	uint8_t bandwidth;
 
 	vis_server = atomic_read(&bat_priv->vis_mode);
 	primary_if = batadv_primary_if_get_selected(bat_priv);
@@ -599,12 +608,12 @@ static void batadv_iv_ogm_schedule(struct batadv_hard_iface *hard_iface)
 	batadv_ogm_packet = (struct batadv_ogm_packet *)hard_iface->packet_buff;
 
 	/* change sequence number to network order */
-	batadv_ogm_packet->seqno =
-			htonl((uint32_t)atomic_read(&hard_iface->seqno));
+	seqno = (uint32_t)atomic_read(&hard_iface->seqno);
+	batadv_ogm_packet->seqno = htonl(seqno);
 	atomic_inc(&hard_iface->seqno);
 
-	batadv_ogm_packet->ttvn = atomic_read(&bat_priv->ttvn);
-	batadv_ogm_packet->tt_crc = htons(bat_priv->tt_crc);
+	batadv_ogm_packet->ttvn = atomic_read(&bat_priv->tt.vn);
+	batadv_ogm_packet->tt_crc = htons(bat_priv->tt.local_crc);
 	if (tt_num_changes >= 0)
 		batadv_ogm_packet->tt_num_changes = tt_num_changes;
 
@@ -613,12 +622,13 @@ static void batadv_iv_ogm_schedule(struct batadv_hard_iface *hard_iface)
 	else
 		batadv_ogm_packet->flags &= ~BATADV_VIS_SERVER;
 
-	if ((hard_iface == primary_if) &&
-	    (atomic_read(&bat_priv->gw_mode) == BATADV_GW_MODE_SERVER))
-		batadv_ogm_packet->gw_flags =
-				(uint8_t)atomic_read(&bat_priv->gw_bandwidth);
-	else
+	if (hard_iface == primary_if &&
+	    atomic_read(&bat_priv->gw_mode) == BATADV_GW_MODE_SERVER) {
+		bandwidth = (uint8_t)atomic_read(&bat_priv->gw_bandwidth);
+		batadv_ogm_packet->gw_flags = bandwidth;
+	} else {
 		batadv_ogm_packet->gw_flags = BATADV_NO_FLAGS;
+	}
 
 	batadv_slide_own_bcast_window(hard_iface);
 	batadv_iv_ogm_queue_add(bat_priv, hard_iface->packet_buff,
@@ -642,8 +652,9 @@ batadv_iv_ogm_orig_update(struct batadv_priv *bat_priv,
 	struct batadv_neigh_node *router = NULL;
 	struct batadv_orig_node *orig_node_tmp;
 	struct hlist_node *node;
-	uint8_t bcast_own_sum_orig, bcast_own_sum_neigh;
+	uint8_t sum_orig, sum_neigh;
 	uint8_t *neigh_addr;
+	uint8_t tq_avg;
 
 	batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
 		   "update_originator(): Searching and updating originator entry of received packet\n");
@@ -667,8 +678,8 @@ batadv_iv_ogm_orig_update(struct batadv_priv *bat_priv,
 		spin_lock_bh(&tmp_neigh_node->lq_update_lock);
 		batadv_ring_buffer_set(tmp_neigh_node->tq_recv,
 				       &tmp_neigh_node->tq_index, 0);
-		tmp_neigh_node->tq_avg =
-			batadv_ring_buffer_avg(tmp_neigh_node->tq_recv);
+		tq_avg = batadv_ring_buffer_avg(tmp_neigh_node->tq_recv);
+		tmp_neigh_node->tq_avg = tq_avg;
 		spin_unlock_bh(&tmp_neigh_node->lq_update_lock);
 	}
 
@@ -727,17 +738,15 @@ batadv_iv_ogm_orig_update(struct batadv_priv *bat_priv,
 	if (router && (neigh_node->tq_avg == router->tq_avg)) {
 		orig_node_tmp = router->orig_node;
 		spin_lock_bh(&orig_node_tmp->ogm_cnt_lock);
-		bcast_own_sum_orig =
-			orig_node_tmp->bcast_own_sum[if_incoming->if_num];
+		sum_orig = orig_node_tmp->bcast_own_sum[if_incoming->if_num];
 		spin_unlock_bh(&orig_node_tmp->ogm_cnt_lock);
 
 		orig_node_tmp = neigh_node->orig_node;
 		spin_lock_bh(&orig_node_tmp->ogm_cnt_lock);
-		bcast_own_sum_neigh =
-			orig_node_tmp->bcast_own_sum[if_incoming->if_num];
+		sum_neigh = orig_node_tmp->bcast_own_sum[if_incoming->if_num];
 		spin_unlock_bh(&orig_node_tmp->ogm_cnt_lock);
 
-		if (bcast_own_sum_orig >= bcast_own_sum_neigh)
+		if (sum_orig >= sum_neigh)
 			goto update_tt;
 	}
 
@@ -835,8 +844,10 @@ static int batadv_iv_ogm_calc_tq(struct batadv_orig_node *orig_node,
 	spin_unlock_bh(&orig_node->ogm_cnt_lock);
 
 	/* pay attention to not get a value bigger than 100 % */
-	total_count = (orig_eq_count > neigh_rq_count ?
-		       neigh_rq_count : orig_eq_count);
+	if (orig_eq_count > neigh_rq_count)
+		total_count = neigh_rq_count;
+	else
+		total_count = orig_eq_count;
 
 	/* if we have too few packets (too less data) we set tq_own to zero
 	 * if we receive too few packets it is not considered bidirectional
@@ -910,6 +921,7 @@ batadv_iv_ogm_update_seqnos(const struct ethhdr *ethhdr,
 	int set_mark, ret = -1;
 	uint32_t seqno = ntohl(batadv_ogm_packet->seqno);
 	uint8_t *neigh_addr;
+	uint8_t packet_count;
 
 	orig_node = batadv_get_orig_node(bat_priv, batadv_ogm_packet->orig);
 	if (!orig_node)
@@ -944,9 +956,9 @@ batadv_iv_ogm_update_seqnos(const struct ethhdr *ethhdr,
 						     tmp_neigh_node->real_bits,
 						     seq_diff, set_mark);
 
-		tmp_neigh_node->real_packet_count =
-			bitmap_weight(tmp_neigh_node->real_bits,
-				      BATADV_TQ_LOCAL_WINDOW_SIZE);
+		packet_count = bitmap_weight(tmp_neigh_node->real_bits,
+					     BATADV_TQ_LOCAL_WINDOW_SIZE);
+		tmp_neigh_node->real_packet_count = packet_count;
 	}
 	rcu_read_unlock();
 
@@ -1163,9 +1175,12 @@ static void batadv_iv_ogm_process(const struct ethhdr *ethhdr,
 	/* if sender is a direct neighbor the sender mac equals
 	 * originator mac
 	 */
-	orig_neigh_node = (is_single_hop_neigh ?
-			   orig_node :
-			   batadv_get_orig_node(bat_priv, ethhdr->h_source));
+	if (is_single_hop_neigh)
+		orig_neigh_node = orig_node;
+	else
+		orig_neigh_node = batadv_get_orig_node(bat_priv,
+						       ethhdr->h_source);
+
 	if (!orig_neigh_node)
 		goto out;
 
@@ -1251,6 +1266,7 @@ static int batadv_iv_ogm_receive(struct sk_buff *skb,
 	int buff_pos = 0, packet_len;
 	unsigned char *tt_buff, *packet_buff;
 	bool ret;
+	uint8_t *packet_pos;
 
 	ret = batadv_check_management_packet(skb, if_incoming, BATADV_OGM_HLEN);
 	if (!ret)
@@ -1281,8 +1297,8 @@ static int batadv_iv_ogm_receive(struct sk_buff *skb,
 		buff_pos += BATADV_OGM_HLEN;
 		buff_pos += batadv_tt_len(batadv_ogm_packet->tt_num_changes);
 
-		batadv_ogm_packet = (struct batadv_ogm_packet *)
-						(packet_buff + buff_pos);
+		packet_pos = packet_buff + buff_pos;
+		batadv_ogm_packet = (struct batadv_ogm_packet *)packet_pos;
 	} while (batadv_iv_ogm_aggr_packet(buff_pos, packet_len,
 					   batadv_ogm_packet->tt_num_changes));
 
diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c
index 6705d35b17ce..0a9084ad19a6 100644
--- a/net/batman-adv/bridge_loop_avoidance.c
+++ b/net/batman-adv/bridge_loop_avoidance.c
@@ -133,7 +133,7 @@ static void batadv_claim_free_ref(struct batadv_claim *claim)
 static struct batadv_claim *batadv_claim_hash_find(struct batadv_priv *bat_priv,
 						   struct batadv_claim *data)
 {
-	struct batadv_hashtable *hash = bat_priv->claim_hash;
+	struct batadv_hashtable *hash = bat_priv->bla.claim_hash;
 	struct hlist_head *head;
 	struct hlist_node *node;
 	struct batadv_claim *claim;
@@ -174,7 +174,7 @@ static struct batadv_backbone_gw *
 batadv_backbone_hash_find(struct batadv_priv *bat_priv,
 			  uint8_t *addr, short vid)
 {
-	struct batadv_hashtable *hash = bat_priv->backbone_hash;
+	struct batadv_hashtable *hash = bat_priv->bla.backbone_hash;
 	struct hlist_head *head;
 	struct hlist_node *node;
 	struct batadv_backbone_gw search_entry, *backbone_gw;
@@ -218,7 +218,7 @@ batadv_bla_del_backbone_claims(struct batadv_backbone_gw *backbone_gw)
 	int i;
 	spinlock_t *list_lock;	/* protects write access to the hash lists */
 
-	hash = backbone_gw->bat_priv->claim_hash;
+	hash = backbone_gw->bat_priv->bla.claim_hash;
 	if (!hash)
 		return;
 
@@ -265,7 +265,7 @@ static void batadv_bla_send_claim(struct batadv_priv *bat_priv, uint8_t *mac,
 	if (!primary_if)
 		return;
 
-	memcpy(&local_claim_dest, &bat_priv->claim_dest,
+	memcpy(&local_claim_dest, &bat_priv->bla.claim_dest,
 	       sizeof(local_claim_dest));
 	local_claim_dest.type = claimtype;
 
@@ -281,7 +281,7 @@ static void batadv_bla_send_claim(struct batadv_priv *bat_priv, uint8_t *mac,
 			 NULL,
 			 /* Ethernet SRC/HW SRC:  originator mac */
 			 primary_if->net_dev->dev_addr,
-			 /* HW DST: FF:43:05:XX:00:00
+			 /* HW DST: FF:43:05:XX:YY:YY
 			  * with XX   = claim type
 			  * and YY:YY = group id
 			  */
@@ -295,7 +295,7 @@ static void batadv_bla_send_claim(struct batadv_priv *bat_priv, uint8_t *mac,
 
 	/* now we pretend that the client would have sent this ... */
 	switch (claimtype) {
-	case BATADV_CLAIM_TYPE_ADD:
+	case BATADV_CLAIM_TYPE_CLAIM:
 		/* normal claim frame
 		 * set Ethernet SRC to the clients mac
 		 */
@@ -303,7 +303,7 @@ static void batadv_bla_send_claim(struct batadv_priv *bat_priv, uint8_t *mac,
 		batadv_dbg(BATADV_DBG_BLA, bat_priv,
 			   "bla_send_claim(): CLAIM %pM on vid %d\n", mac, vid);
 		break;
-	case BATADV_CLAIM_TYPE_DEL:
+	case BATADV_CLAIM_TYPE_UNCLAIM:
 		/* unclaim frame
 		 * set HW SRC to the clients mac
 		 */
@@ -323,7 +323,8 @@ static void batadv_bla_send_claim(struct batadv_priv *bat_priv, uint8_t *mac,
 		break;
 	case BATADV_CLAIM_TYPE_REQUEST:
 		/* request frame
-		 * set HW SRC to the special mac containg the crc
+		 * set HW SRC and header destination to the receiving backbone
+		 * gws mac
 		 */
 		memcpy(hw_src, mac, ETH_ALEN);
 		memcpy(ethhdr->h_dest, mac, ETH_ALEN);
@@ -339,8 +340,9 @@ static void batadv_bla_send_claim(struct batadv_priv *bat_priv, uint8_t *mac,
 
 	skb_reset_mac_header(skb);
 	skb->protocol = eth_type_trans(skb, soft_iface);
-	bat_priv->stats.rx_packets++;
-	bat_priv->stats.rx_bytes += skb->len + ETH_HLEN;
+	batadv_inc_counter(bat_priv, BATADV_CNT_RX);
+	batadv_add_counter(bat_priv, BATADV_CNT_RX_BYTES,
+			   skb->len + ETH_HLEN);
 	soft_iface->last_rx = jiffies;
 
 	netif_rx(skb);
@@ -389,7 +391,7 @@ batadv_bla_get_backbone_gw(struct batadv_priv *bat_priv, uint8_t *orig,
 	/* one for the hash, one for returning */
 	atomic_set(&entry->refcount, 2);
 
-	hash_added = batadv_hash_add(bat_priv->backbone_hash,
+	hash_added = batadv_hash_add(bat_priv->bla.backbone_hash,
 				     batadv_compare_backbone_gw,
 				     batadv_choose_backbone_gw, entry,
 				     &entry->hash_entry);
@@ -456,7 +458,7 @@ static void batadv_bla_answer_request(struct batadv_priv *bat_priv,
 	if (!backbone_gw)
 		return;
 
-	hash = bat_priv->claim_hash;
+	hash = bat_priv->bla.claim_hash;
 	for (i = 0; i < hash->size; i++) {
 		head = &hash->table[i];
 
@@ -467,7 +469,7 @@ static void batadv_bla_answer_request(struct batadv_priv *bat_priv,
 				continue;
 
 			batadv_bla_send_claim(bat_priv, claim->addr, claim->vid,
-					      BATADV_CLAIM_TYPE_ADD);
+					      BATADV_CLAIM_TYPE_CLAIM);
 		}
 		rcu_read_unlock();
 	}
@@ -497,7 +499,7 @@ static void batadv_bla_send_request(struct batadv_backbone_gw *backbone_gw)
 
 	/* no local broadcasts should be sent or received, for now. */
 	if (!atomic_read(&backbone_gw->request_sent)) {
-		atomic_inc(&backbone_gw->bat_priv->bla_num_requests);
+		atomic_inc(&backbone_gw->bat_priv->bla.num_requests);
 		atomic_set(&backbone_gw->request_sent, 1);
 	}
 }
@@ -557,7 +559,7 @@ static void batadv_bla_add_claim(struct batadv_priv *bat_priv,
 		batadv_dbg(BATADV_DBG_BLA, bat_priv,
 			   "bla_add_claim(): adding new entry %pM, vid %d to hash ...\n",
 			   mac, vid);
-		hash_added = batadv_hash_add(bat_priv->claim_hash,
+		hash_added = batadv_hash_add(bat_priv->bla.claim_hash,
 					     batadv_compare_claim,
 					     batadv_choose_claim, claim,
 					     &claim->hash_entry);
@@ -577,8 +579,7 @@ static void batadv_bla_add_claim(struct batadv_priv *bat_priv,
 			   "bla_add_claim(): changing ownership for %pM, vid %d\n",
 			   mac, vid);
 
-		claim->backbone_gw->crc ^=
-			crc16(0, claim->addr, ETH_ALEN);
+		claim->backbone_gw->crc ^= crc16(0, claim->addr, ETH_ALEN);
 		batadv_backbone_gw_free_ref(claim->backbone_gw);
 
 	}
@@ -610,7 +611,7 @@ static void batadv_bla_del_claim(struct batadv_priv *bat_priv,
 	batadv_dbg(BATADV_DBG_BLA, bat_priv, "bla_del_claim(): %pM, vid %d\n",
 		   mac, vid);
 
-	batadv_hash_remove(bat_priv->claim_hash, batadv_compare_claim,
+	batadv_hash_remove(bat_priv->bla.claim_hash, batadv_compare_claim,
 			   batadv_choose_claim, claim);
 	batadv_claim_free_ref(claim); /* reference from the hash is gone */
 
@@ -657,7 +658,7 @@ static int batadv_handle_announce(struct batadv_priv *bat_priv,
 		 * we can allow traffic again.
 		 */
 		if (atomic_read(&backbone_gw->request_sent)) {
-			atomic_dec(&backbone_gw->bat_priv->bla_num_requests);
+			atomic_dec(&backbone_gw->bat_priv->bla.num_requests);
 			atomic_set(&backbone_gw->request_sent, 0);
 		}
 	}
@@ -702,7 +703,7 @@ static int batadv_handle_unclaim(struct batadv_priv *bat_priv,
 	if (primary_if && batadv_compare_eth(backbone_addr,
 					     primary_if->net_dev->dev_addr))
 		batadv_bla_send_claim(bat_priv, claim_addr, vid,
-				      BATADV_CLAIM_TYPE_DEL);
+				      BATADV_CLAIM_TYPE_UNCLAIM);
 
 	backbone_gw = batadv_backbone_hash_find(bat_priv, backbone_addr, vid);
 
@@ -738,7 +739,7 @@ static int batadv_handle_claim(struct batadv_priv *bat_priv,
 	batadv_bla_add_claim(bat_priv, claim_addr, vid, backbone_gw);
 	if (batadv_compare_eth(backbone_addr, primary_if->net_dev->dev_addr))
 		batadv_bla_send_claim(bat_priv, claim_addr, vid,
-				      BATADV_CLAIM_TYPE_ADD);
+				      BATADV_CLAIM_TYPE_CLAIM);
 
 	/* TODO: we could call something like tt_local_del() here. */
 
@@ -772,7 +773,7 @@ static int batadv_check_claim_group(struct batadv_priv *bat_priv,
 	struct batadv_bla_claim_dst *bla_dst, *bla_dst_own;
 
 	bla_dst = (struct batadv_bla_claim_dst *)hw_dst;
-	bla_dst_own = &bat_priv->claim_dest;
+	bla_dst_own = &bat_priv->bla.claim_dest;
 
 	/* check if it is a claim packet in general */
 	if (memcmp(bla_dst->magic, bla_dst_own->magic,
@@ -783,12 +784,12 @@ static int batadv_check_claim_group(struct batadv_priv *bat_priv,
 	 * otherwise assume it is in the hw_src
 	 */
 	switch (bla_dst->type) {
-	case BATADV_CLAIM_TYPE_ADD:
+	case BATADV_CLAIM_TYPE_CLAIM:
 		backbone_addr = hw_src;
 		break;
 	case BATADV_CLAIM_TYPE_REQUEST:
 	case BATADV_CLAIM_TYPE_ANNOUNCE:
-	case BATADV_CLAIM_TYPE_DEL:
+	case BATADV_CLAIM_TYPE_UNCLAIM:
 		backbone_addr = ethhdr->h_source;
 		break;
 	default:
@@ -904,12 +905,12 @@ static int batadv_bla_process_claim(struct batadv_priv *bat_priv,
 
 	/* check for the different types of claim frames ... */
 	switch (bla_dst->type) {
-	case BATADV_CLAIM_TYPE_ADD:
+	case BATADV_CLAIM_TYPE_CLAIM:
 		if (batadv_handle_claim(bat_priv, primary_if, hw_src,
 					ethhdr->h_source, vid))
 			return 1;
 		break;
-	case BATADV_CLAIM_TYPE_DEL:
+	case BATADV_CLAIM_TYPE_UNCLAIM:
 		if (batadv_handle_unclaim(bat_priv, primary_if,
 					  ethhdr->h_source, hw_src, vid))
 			return 1;
@@ -945,7 +946,7 @@ static void batadv_bla_purge_backbone_gw(struct batadv_priv *bat_priv, int now)
 	spinlock_t *list_lock;	/* protects write access to the hash lists */
 	int i;
 
-	hash = bat_priv->backbone_hash;
+	hash = bat_priv->bla.backbone_hash;
 	if (!hash)
 		return;
 
@@ -969,7 +970,7 @@ static void batadv_bla_purge_backbone_gw(struct batadv_priv *bat_priv, int now)
 purge_now:
 			/* don't wait for the pending request anymore */
 			if (atomic_read(&backbone_gw->request_sent))
-				atomic_dec(&bat_priv->bla_num_requests);
+				atomic_dec(&bat_priv->bla.num_requests);
 
 			batadv_bla_del_backbone_claims(backbone_gw);
 
@@ -999,7 +1000,7 @@ static void batadv_bla_purge_claims(struct batadv_priv *bat_priv,
 	struct batadv_hashtable *hash;
 	int i;
 
-	hash = bat_priv->claim_hash;
+	hash = bat_priv->bla.claim_hash;
 	if (!hash)
 		return;
 
@@ -1046,11 +1047,12 @@ void batadv_bla_update_orig_address(struct batadv_priv *bat_priv,
 	struct hlist_node *node;
 	struct hlist_head *head;
 	struct batadv_hashtable *hash;
+	__be16 group;
 	int i;
 
 	/* reset bridge loop avoidance group id */
-	bat_priv->claim_dest.group =
-		htons(crc16(0, primary_if->net_dev->dev_addr, ETH_ALEN));
+	group = htons(crc16(0, primary_if->net_dev->dev_addr, ETH_ALEN));
+	bat_priv->bla.claim_dest.group = group;
 
 	if (!oldif) {
 		batadv_bla_purge_claims(bat_priv, NULL, 1);
@@ -1058,7 +1060,7 @@ void batadv_bla_update_orig_address(struct batadv_priv *bat_priv,
 		return;
 	}
 
-	hash = bat_priv->backbone_hash;
+	hash = bat_priv->bla.backbone_hash;
 	if (!hash)
 		return;
 
@@ -1088,8 +1090,8 @@ void batadv_bla_update_orig_address(struct batadv_priv *bat_priv,
 /* (re)start the timer */
 static void batadv_bla_start_timer(struct batadv_priv *bat_priv)
 {
-	INIT_DELAYED_WORK(&bat_priv->bla_work, batadv_bla_periodic_work);
-	queue_delayed_work(batadv_event_workqueue, &bat_priv->bla_work,
+	INIT_DELAYED_WORK(&bat_priv->bla.work, batadv_bla_periodic_work);
+	queue_delayed_work(batadv_event_workqueue, &bat_priv->bla.work,
 			   msecs_to_jiffies(BATADV_BLA_PERIOD_LENGTH));
 }
 
@@ -1099,9 +1101,9 @@ static void batadv_bla_start_timer(struct batadv_priv *bat_priv)
  */
 static void batadv_bla_periodic_work(struct work_struct *work)
 {
-	struct delayed_work *delayed_work =
-		container_of(work, struct delayed_work, work);
+	struct delayed_work *delayed_work;
 	struct batadv_priv *bat_priv;
+	struct batadv_priv_bla *priv_bla;
 	struct hlist_node *node;
 	struct hlist_head *head;
 	struct batadv_backbone_gw *backbone_gw;
@@ -1109,7 +1111,9 @@ static void batadv_bla_periodic_work(struct work_struct *work)
 	struct batadv_hard_iface *primary_if;
 	int i;
 
-	bat_priv = container_of(delayed_work, struct batadv_priv, bla_work);
+	delayed_work = container_of(work, struct delayed_work, work);
+	priv_bla = container_of(delayed_work, struct batadv_priv_bla, work);
+	bat_priv = container_of(priv_bla, struct batadv_priv, bla);
 	primary_if = batadv_primary_if_get_selected(bat_priv);
 	if (!primary_if)
 		goto out;
@@ -1120,7 +1124,7 @@ static void batadv_bla_periodic_work(struct work_struct *work)
 	if (!atomic_read(&bat_priv->bridge_loop_avoidance))
 		goto out;
 
-	hash = bat_priv->backbone_hash;
+	hash = bat_priv->bla.backbone_hash;
 	if (!hash)
 		goto out;
 
@@ -1160,40 +1164,41 @@ int batadv_bla_init(struct batadv_priv *bat_priv)
 	int i;
 	uint8_t claim_dest[ETH_ALEN] = {0xff, 0x43, 0x05, 0x00, 0x00, 0x00};
 	struct batadv_hard_iface *primary_if;
+	uint16_t crc;
+	unsigned long entrytime;
 
 	batadv_dbg(BATADV_DBG_BLA, bat_priv, "bla hash registering\n");
 
 	/* setting claim destination address */
-	memcpy(&bat_priv->claim_dest.magic, claim_dest, 3);
-	bat_priv->claim_dest.type = 0;
+	memcpy(&bat_priv->bla.claim_dest.magic, claim_dest, 3);
+	bat_priv->bla.claim_dest.type = 0;
 	primary_if = batadv_primary_if_get_selected(bat_priv);
 	if (primary_if) {
-		bat_priv->claim_dest.group =
-			htons(crc16(0, primary_if->net_dev->dev_addr,
-				    ETH_ALEN));
+		crc = crc16(0, primary_if->net_dev->dev_addr, ETH_ALEN);
+		bat_priv->bla.claim_dest.group = htons(crc);
 		batadv_hardif_free_ref(primary_if);
 	} else {
-		bat_priv->claim_dest.group = 0; /* will be set later */
+		bat_priv->bla.claim_dest.group = 0; /* will be set later */
 	}
 
 	/* initialize the duplicate list */
+	entrytime = jiffies - msecs_to_jiffies(BATADV_DUPLIST_TIMEOUT);
 	for (i = 0; i < BATADV_DUPLIST_SIZE; i++)
-		bat_priv->bcast_duplist[i].entrytime =
-			jiffies - msecs_to_jiffies(BATADV_DUPLIST_TIMEOUT);
-	bat_priv->bcast_duplist_curr = 0;
+		bat_priv->bla.bcast_duplist[i].entrytime = entrytime;
+	bat_priv->bla.bcast_duplist_curr = 0;
 
-	if (bat_priv->claim_hash)
+	if (bat_priv->bla.claim_hash)
 		return 0;
 
-	bat_priv->claim_hash = batadv_hash_new(128);
-	bat_priv->backbone_hash = batadv_hash_new(32);
+	bat_priv->bla.claim_hash = batadv_hash_new(128);
+	bat_priv->bla.backbone_hash = batadv_hash_new(32);
 
-	if (!bat_priv->claim_hash || !bat_priv->backbone_hash)
+	if (!bat_priv->bla.claim_hash || !bat_priv->bla.backbone_hash)
 		return -ENOMEM;
 
-	batadv_hash_set_lock_class(bat_priv->claim_hash,
+	batadv_hash_set_lock_class(bat_priv->bla.claim_hash,
 				   &batadv_claim_hash_lock_class_key);
-	batadv_hash_set_lock_class(bat_priv->backbone_hash,
+	batadv_hash_set_lock_class(bat_priv->bla.backbone_hash,
 				   &batadv_backbone_hash_lock_class_key);
 
 	batadv_dbg(BATADV_DBG_BLA, bat_priv, "bla hashes initialized\n");
@@ -1234,8 +1239,9 @@ int batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv,
 	crc = crc16(0, content, length);
 
 	for (i = 0; i < BATADV_DUPLIST_SIZE; i++) {
-		curr = (bat_priv->bcast_duplist_curr + i) % BATADV_DUPLIST_SIZE;
-		entry = &bat_priv->bcast_duplist[curr];
+		curr = (bat_priv->bla.bcast_duplist_curr + i);
+		curr %= BATADV_DUPLIST_SIZE;
+		entry = &bat_priv->bla.bcast_duplist[curr];
 
 		/* we can stop searching if the entry is too old ;
 		 * later entries will be even older
@@ -1256,13 +1262,13 @@ int batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv,
 		return 1;
 	}
 	/* not found, add a new entry (overwrite the oldest entry) */
-	curr = (bat_priv->bcast_duplist_curr + BATADV_DUPLIST_SIZE - 1);
+	curr = (bat_priv->bla.bcast_duplist_curr + BATADV_DUPLIST_SIZE - 1);
 	curr %= BATADV_DUPLIST_SIZE;
-	entry = &bat_priv->bcast_duplist[curr];
+	entry = &bat_priv->bla.bcast_duplist[curr];
 	entry->crc = crc;
 	entry->entrytime = jiffies;
 	memcpy(entry->orig, bcast_packet->orig, ETH_ALEN);
-	bat_priv->bcast_duplist_curr = curr;
+	bat_priv->bla.bcast_duplist_curr = curr;
 
 	/* allow it, its the first occurence. */
 	return 0;
@@ -1279,7 +1285,7 @@ int batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv,
  */
 int batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv, uint8_t *orig)
 {
-	struct batadv_hashtable *hash = bat_priv->backbone_hash;
+	struct batadv_hashtable *hash = bat_priv->bla.backbone_hash;
 	struct hlist_head *head;
 	struct hlist_node *node;
 	struct batadv_backbone_gw *backbone_gw;
@@ -1339,8 +1345,7 @@ int batadv_bla_is_backbone_gw(struct sk_buff *skb,
 		if (!pskb_may_pull(skb, hdr_size + sizeof(struct vlan_ethhdr)))
 			return 0;
 
-		vhdr = (struct vlan_ethhdr *)(((uint8_t *)skb->data) +
-					      hdr_size);
+		vhdr = (struct vlan_ethhdr *)(skb->data + hdr_size);
 		vid = ntohs(vhdr->h_vlan_TCI) & VLAN_VID_MASK;
 	}
 
@@ -1359,18 +1364,18 @@ void batadv_bla_free(struct batadv_priv *bat_priv)
 {
 	struct batadv_hard_iface *primary_if;
 
-	cancel_delayed_work_sync(&bat_priv->bla_work);
+	cancel_delayed_work_sync(&bat_priv->bla.work);
 	primary_if = batadv_primary_if_get_selected(bat_priv);
 
-	if (bat_priv->claim_hash) {
+	if (bat_priv->bla.claim_hash) {
 		batadv_bla_purge_claims(bat_priv, primary_if, 1);
-		batadv_hash_destroy(bat_priv->claim_hash);
-		bat_priv->claim_hash = NULL;
+		batadv_hash_destroy(bat_priv->bla.claim_hash);
+		bat_priv->bla.claim_hash = NULL;
 	}
-	if (bat_priv->backbone_hash) {
+	if (bat_priv->bla.backbone_hash) {
 		batadv_bla_purge_backbone_gw(bat_priv, 1);
-		batadv_hash_destroy(bat_priv->backbone_hash);
-		bat_priv->backbone_hash = NULL;
+		batadv_hash_destroy(bat_priv->bla.backbone_hash);
+		bat_priv->bla.backbone_hash = NULL;
 	}
 	if (primary_if)
 		batadv_hardif_free_ref(primary_if);
@@ -1409,7 +1414,7 @@ int batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb, short vid,
 		goto allow;
 
 
-	if (unlikely(atomic_read(&bat_priv->bla_num_requests)))
+	if (unlikely(atomic_read(&bat_priv->bla.num_requests)))
 		/* don't allow broadcasts while requests are in flight */
 		if (is_multicast_ether_addr(ethhdr->h_dest) && is_bcast)
 			goto handled;
@@ -1508,7 +1513,7 @@ int batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb, short vid)
 
 	ethhdr = (struct ethhdr *)skb_mac_header(skb);
 
-	if (unlikely(atomic_read(&bat_priv->bla_num_requests)))
+	if (unlikely(atomic_read(&bat_priv->bla.num_requests)))
 		/* don't allow broadcasts while requests are in flight */
 		if (is_multicast_ether_addr(ethhdr->h_dest))
 			goto handled;
@@ -1564,7 +1569,7 @@ int batadv_bla_claim_table_seq_print_text(struct seq_file *seq, void *offset)
 {
 	struct net_device *net_dev = (struct net_device *)seq->private;
 	struct batadv_priv *bat_priv = netdev_priv(net_dev);
-	struct batadv_hashtable *hash = bat_priv->claim_hash;
+	struct batadv_hashtable *hash = bat_priv->bla.claim_hash;
 	struct batadv_claim *claim;
 	struct batadv_hard_iface *primary_if;
 	struct hlist_node *node;
@@ -1593,7 +1598,7 @@ int batadv_bla_claim_table_seq_print_text(struct seq_file *seq, void *offset)
 	seq_printf(seq,
 		   "Claims announced for the mesh %s (orig %pM, group id %04x)\n",
 		   net_dev->name, primary_addr,
-		   ntohs(bat_priv->claim_dest.group));
+		   ntohs(bat_priv->bla.claim_dest.group));
 	seq_printf(seq, "   %-17s    %-5s    %-17s [o] (%-4s)\n",
 		   "Client", "VID", "Originator", "CRC");
 	for (i = 0; i < hash->size; i++) {
@@ -1616,3 +1621,68 @@ out:
 		batadv_hardif_free_ref(primary_if);
 	return ret;
 }
+
+int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq, void *offset)
+{
+	struct net_device *net_dev = (struct net_device *)seq->private;
+	struct batadv_priv *bat_priv = netdev_priv(net_dev);
+	struct batadv_hashtable *hash = bat_priv->bla.backbone_hash;
+	struct batadv_backbone_gw *backbone_gw;
+	struct batadv_hard_iface *primary_if;
+	struct hlist_node *node;
+	struct hlist_head *head;
+	int secs, msecs;
+	uint32_t i;
+	bool is_own;
+	int ret = 0;
+	uint8_t *primary_addr;
+
+	primary_if = batadv_primary_if_get_selected(bat_priv);
+	if (!primary_if) {
+		ret = seq_printf(seq,
+				 "BATMAN mesh %s disabled - please specify interfaces to enable it\n",
+				 net_dev->name);
+		goto out;
+	}
+
+	if (primary_if->if_status != BATADV_IF_ACTIVE) {
+		ret = seq_printf(seq,
+				 "BATMAN mesh %s disabled - primary interface not active\n",
+				 net_dev->name);
+		goto out;
+	}
+
+	primary_addr = primary_if->net_dev->dev_addr;
+	seq_printf(seq,
+		   "Backbones announced for the mesh %s (orig %pM, group id %04x)\n",
+		   net_dev->name, primary_addr,
+		   ntohs(bat_priv->bla.claim_dest.group));
+	seq_printf(seq, "   %-17s    %-5s %-9s (%-4s)\n",
+		   "Originator", "VID", "last seen", "CRC");
+	for (i = 0; i < hash->size; i++) {
+		head = &hash->table[i];
+
+		rcu_read_lock();
+		hlist_for_each_entry_rcu(backbone_gw, node, head, hash_entry) {
+			msecs = jiffies_to_msecs(jiffies -
+						 backbone_gw->lasttime);
+			secs = msecs / 1000;
+			msecs = msecs % 1000;
+
+			is_own = batadv_compare_eth(backbone_gw->orig,
+						    primary_addr);
+			if (is_own)
+				continue;
+
+			seq_printf(seq,
+				   " * %pM on % 5d % 4i.%03is (%04x)\n",
+				   backbone_gw->orig, backbone_gw->vid,
+				   secs, msecs, backbone_gw->crc);
+		}
+		rcu_read_unlock();
+	}
+out:
+	if (primary_if)
+		batadv_hardif_free_ref(primary_if);
+	return ret;
+}
diff --git a/net/batman-adv/bridge_loop_avoidance.h b/net/batman-adv/bridge_loop_avoidance.h
index 563cfbf94a7f..789cb73bde67 100644
--- a/net/batman-adv/bridge_loop_avoidance.h
+++ b/net/batman-adv/bridge_loop_avoidance.h
@@ -27,6 +27,8 @@ int batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb, short vid);
 int batadv_bla_is_backbone_gw(struct sk_buff *skb,
 			      struct batadv_orig_node *orig_node, int hdr_size);
 int batadv_bla_claim_table_seq_print_text(struct seq_file *seq, void *offset);
+int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq,
+					     void *offset);
 int batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv, uint8_t *orig);
 int batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv,
 				   struct batadv_bcast_packet *bcast_packet,
@@ -41,8 +43,7 @@ void batadv_bla_free(struct batadv_priv *bat_priv);
 #else /* ifdef CONFIG_BATMAN_ADV_BLA */
 
 static inline int batadv_bla_rx(struct batadv_priv *bat_priv,
-				struct sk_buff *skb, short vid,
-				bool is_bcast)
+				struct sk_buff *skb, short vid, bool is_bcast)
 {
 	return 0;
 }
@@ -66,6 +67,12 @@ static inline int batadv_bla_claim_table_seq_print_text(struct seq_file *seq,
 	return 0;
 }
 
+static inline int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq,
+							   void *offset)
+{
+	return 0;
+}
+
 static inline int batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv,
 						 uint8_t *orig)
 {
diff --git a/net/batman-adv/debugfs.c b/net/batman-adv/debugfs.c
index 34fbb1667bcd..391d4fb2026f 100644
--- a/net/batman-adv/debugfs.c
+++ b/net/batman-adv/debugfs.c
@@ -267,6 +267,15 @@ static int batadv_bla_claim_table_open(struct inode *inode, struct file *file)
 	return single_open(file, batadv_bla_claim_table_seq_print_text,
 			   net_dev);
 }
+
+static int batadv_bla_backbone_table_open(struct inode *inode,
+					  struct file *file)
+{
+	struct net_device *net_dev = (struct net_device *)inode->i_private;
+	return single_open(file, batadv_bla_backbone_table_seq_print_text,
+			   net_dev);
+}
+
 #endif
 
 static int batadv_transtable_local_open(struct inode *inode, struct file *file)
@@ -305,6 +314,8 @@ static BATADV_DEBUGINFO(transtable_global, S_IRUGO,
 			batadv_transtable_global_open);
 #ifdef CONFIG_BATMAN_ADV_BLA
 static BATADV_DEBUGINFO(bla_claim_table, S_IRUGO, batadv_bla_claim_table_open);
+static BATADV_DEBUGINFO(bla_backbone_table, S_IRUGO,
+			batadv_bla_backbone_table_open);
 #endif
 static BATADV_DEBUGINFO(transtable_local, S_IRUGO,
 			batadv_transtable_local_open);
@@ -316,6 +327,7 @@ static struct batadv_debuginfo *batadv_mesh_debuginfos[] = {
 	&batadv_debuginfo_transtable_global,
 #ifdef CONFIG_BATMAN_ADV_BLA
 	&batadv_debuginfo_bla_claim_table,
+	&batadv_debuginfo_bla_backbone_table,
 #endif
 	&batadv_debuginfo_transtable_local,
 	&batadv_debuginfo_vis_data,
diff --git a/net/batman-adv/gateway_client.c b/net/batman-adv/gateway_client.c
index fc866f2e4528..15d67abc10a4 100644
--- a/net/batman-adv/gateway_client.c
+++ b/net/batman-adv/gateway_client.c
@@ -48,7 +48,7 @@ batadv_gw_get_selected_gw_node(struct batadv_priv *bat_priv)
 	struct batadv_gw_node *gw_node;
 
 	rcu_read_lock();
-	gw_node = rcu_dereference(bat_priv->curr_gw);
+	gw_node = rcu_dereference(bat_priv->gw.curr_gw);
 	if (!gw_node)
 		goto out;
 
@@ -91,23 +91,23 @@ static void batadv_gw_select(struct batadv_priv *bat_priv,
 {
 	struct batadv_gw_node *curr_gw_node;
 
-	spin_lock_bh(&bat_priv->gw_list_lock);
+	spin_lock_bh(&bat_priv->gw.list_lock);
 
 	if (new_gw_node && !atomic_inc_not_zero(&new_gw_node->refcount))
 		new_gw_node = NULL;
 
-	curr_gw_node = rcu_dereference_protected(bat_priv->curr_gw, 1);
-	rcu_assign_pointer(bat_priv->curr_gw, new_gw_node);
+	curr_gw_node = rcu_dereference_protected(bat_priv->gw.curr_gw, 1);
+	rcu_assign_pointer(bat_priv->gw.curr_gw, new_gw_node);
 
 	if (curr_gw_node)
 		batadv_gw_node_free_ref(curr_gw_node);
 
-	spin_unlock_bh(&bat_priv->gw_list_lock);
+	spin_unlock_bh(&bat_priv->gw.list_lock);
 }
 
 void batadv_gw_deselect(struct batadv_priv *bat_priv)
 {
-	atomic_set(&bat_priv->gw_reselect, 1);
+	atomic_set(&bat_priv->gw.reselect, 1);
 }
 
 static struct batadv_gw_node *
@@ -117,12 +117,17 @@ batadv_gw_get_best_gw_node(struct batadv_priv *bat_priv)
 	struct hlist_node *node;
 	struct batadv_gw_node *gw_node, *curr_gw = NULL;
 	uint32_t max_gw_factor = 0, tmp_gw_factor = 0;
+	uint32_t gw_divisor;
 	uint8_t max_tq = 0;
 	int down, up;
+	uint8_t tq_avg;
 	struct batadv_orig_node *orig_node;
 
+	gw_divisor = BATADV_TQ_LOCAL_WINDOW_SIZE * BATADV_TQ_LOCAL_WINDOW_SIZE;
+	gw_divisor *= 64;
+
 	rcu_read_lock();
-	hlist_for_each_entry_rcu(gw_node, node, &bat_priv->gw_list, list) {
+	hlist_for_each_entry_rcu(gw_node, node, &bat_priv->gw.list, list) {
 		if (gw_node->deleted)
 			continue;
 
@@ -134,19 +139,19 @@ batadv_gw_get_best_gw_node(struct batadv_priv *bat_priv)
 		if (!atomic_inc_not_zero(&gw_node->refcount))
 			goto next;
 
+		tq_avg = router->tq_avg;
+
 		switch (atomic_read(&bat_priv->gw_sel_class)) {
 		case 1: /* fast connection */
 			batadv_gw_bandwidth_to_kbit(orig_node->gw_flags,
 						    &down, &up);
 
-			tmp_gw_factor = (router->tq_avg * router->tq_avg *
-					 down * 100 * 100) /
-					 (BATADV_TQ_LOCAL_WINDOW_SIZE *
-					  BATADV_TQ_LOCAL_WINDOW_SIZE * 64);
+			tmp_gw_factor = tq_avg * tq_avg * down * 100 * 100;
+			tmp_gw_factor /= gw_divisor;
 
 			if ((tmp_gw_factor > max_gw_factor) ||
 			    ((tmp_gw_factor == max_gw_factor) &&
-			     (router->tq_avg > max_tq))) {
+			     (tq_avg > max_tq))) {
 				if (curr_gw)
 					batadv_gw_node_free_ref(curr_gw);
 				curr_gw = gw_node;
@@ -161,7 +166,7 @@ batadv_gw_get_best_gw_node(struct batadv_priv *bat_priv)
 			  *     soon as a better gateway appears which has
 			  *     $routing_class more tq points)
 			  */
-			if (router->tq_avg > max_tq) {
+			if (tq_avg > max_tq) {
 				if (curr_gw)
 					batadv_gw_node_free_ref(curr_gw);
 				curr_gw = gw_node;
@@ -170,8 +175,8 @@ batadv_gw_get_best_gw_node(struct batadv_priv *bat_priv)
 			break;
 		}
 
-		if (router->tq_avg > max_tq)
-			max_tq = router->tq_avg;
+		if (tq_avg > max_tq)
+			max_tq = tq_avg;
 
 		if (tmp_gw_factor > max_gw_factor)
 			max_gw_factor = tmp_gw_factor;
@@ -202,7 +207,7 @@ void batadv_gw_election(struct batadv_priv *bat_priv)
 
 	curr_gw = batadv_gw_get_selected_gw_node(bat_priv);
 
-	if (!batadv_atomic_dec_not_zero(&bat_priv->gw_reselect) && curr_gw)
+	if (!batadv_atomic_dec_not_zero(&bat_priv->gw.reselect) && curr_gw)
 		goto out;
 
 	next_gw = batadv_gw_get_best_gw_node(bat_priv);
@@ -321,9 +326,9 @@ static void batadv_gw_node_add(struct batadv_priv *bat_priv,
 	gw_node->orig_node = orig_node;
 	atomic_set(&gw_node->refcount, 1);
 
-	spin_lock_bh(&bat_priv->gw_list_lock);
-	hlist_add_head_rcu(&gw_node->list, &bat_priv->gw_list);
-	spin_unlock_bh(&bat_priv->gw_list_lock);
+	spin_lock_bh(&bat_priv->gw.list_lock);
+	hlist_add_head_rcu(&gw_node->list, &bat_priv->gw.list);
+	spin_unlock_bh(&bat_priv->gw.list_lock);
 
 	batadv_gw_bandwidth_to_kbit(new_gwflags, &down, &up);
 	batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
@@ -350,7 +355,7 @@ void batadv_gw_node_update(struct batadv_priv *bat_priv,
 	curr_gw = batadv_gw_get_selected_gw_node(bat_priv);
 
 	rcu_read_lock();
-	hlist_for_each_entry_rcu(gw_node, node, &bat_priv->gw_list, list) {
+	hlist_for_each_entry_rcu(gw_node, node, &bat_priv->gw.list, list) {
 		if (gw_node->orig_node != orig_node)
 			continue;
 
@@ -404,10 +409,10 @@ void batadv_gw_node_purge(struct batadv_priv *bat_priv)
 
 	curr_gw = batadv_gw_get_selected_gw_node(bat_priv);
 
-	spin_lock_bh(&bat_priv->gw_list_lock);
+	spin_lock_bh(&bat_priv->gw.list_lock);
 
 	hlist_for_each_entry_safe(gw_node, node, node_tmp,
-				  &bat_priv->gw_list, list) {
+				  &bat_priv->gw.list, list) {
 		if (((!gw_node->deleted) ||
 		     (time_before(jiffies, gw_node->deleted + timeout))) &&
 		    atomic_read(&bat_priv->mesh_state) == BATADV_MESH_ACTIVE)
@@ -420,7 +425,7 @@ void batadv_gw_node_purge(struct batadv_priv *bat_priv)
 		batadv_gw_node_free_ref(gw_node);
 	}
 
-	spin_unlock_bh(&bat_priv->gw_list_lock);
+	spin_unlock_bh(&bat_priv->gw.list_lock);
 
 	/* gw_deselect() needs to acquire the gw_list_lock */
 	if (do_deselect)
@@ -496,7 +501,7 @@ int batadv_gw_client_seq_print_text(struct seq_file *seq, void *offset)
 		   primary_if->net_dev->dev_addr, net_dev->name);
 
 	rcu_read_lock();
-	hlist_for_each_entry_rcu(gw_node, node, &bat_priv->gw_list, list) {
+	hlist_for_each_entry_rcu(gw_node, node, &bat_priv->gw.list, list) {
 		if (gw_node->deleted)
 			continue;
 
diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c
index 282bf6e9353e..d112fd6750b0 100644
--- a/net/batman-adv/hard-interface.c
+++ b/net/batman-adv/hard-interface.c
@@ -103,13 +103,14 @@ static void batadv_primary_if_update_addr(struct batadv_priv *bat_priv,
 {
 	struct batadv_vis_packet *vis_packet;
 	struct batadv_hard_iface *primary_if;
+	struct sk_buff *skb;
 
 	primary_if = batadv_primary_if_get_selected(bat_priv);
 	if (!primary_if)
 		goto out;
 
-	vis_packet = (struct batadv_vis_packet *)
-				bat_priv->my_vis_info->skb_packet->data;
+	skb = bat_priv->vis.my_info->skb_packet;
+	vis_packet = (struct batadv_vis_packet *)skb->data;
 	memcpy(vis_packet->vis_orig, primary_if->net_dev->dev_addr, ETH_ALEN);
 	memcpy(vis_packet->sender_orig,
 	       primary_if->net_dev->dev_addr, ETH_ALEN);
@@ -313,7 +314,13 @@ int batadv_hardif_enable_interface(struct batadv_hard_iface *hard_iface,
 	hard_iface->if_num = bat_priv->num_ifaces;
 	bat_priv->num_ifaces++;
 	hard_iface->if_status = BATADV_IF_INACTIVE;
-	batadv_orig_hash_add_if(hard_iface, bat_priv->num_ifaces);
+	ret = batadv_orig_hash_add_if(hard_iface, bat_priv->num_ifaces);
+	if (ret < 0) {
+		bat_priv->bat_algo_ops->bat_iface_disable(hard_iface);
+		bat_priv->num_ifaces--;
+		hard_iface->if_status = BATADV_IF_NOT_IN_USE;
+		goto err_dev;
+	}
 
 	hard_iface->batman_adv_ptype.type = ethertype;
 	hard_iface->batman_adv_ptype.func = batadv_batman_skb_recv;
diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c
index 13c88b25ab31..b4aa470bc4a6 100644
--- a/net/batman-adv/main.c
+++ b/net/batman-adv/main.c
@@ -58,9 +58,6 @@ static int __init batadv_init(void)
 
 	batadv_iv_init();
 
-	/* the name should not be longer than 10 chars - see
-	 * http://lwn.net/Articles/23634/
-	 */
 	batadv_event_workqueue = create_singlethread_workqueue("bat_events");
 
 	if (!batadv_event_workqueue)
@@ -97,20 +94,20 @@ int batadv_mesh_init(struct net_device *soft_iface)
 
 	spin_lock_init(&bat_priv->forw_bat_list_lock);
 	spin_lock_init(&bat_priv->forw_bcast_list_lock);
-	spin_lock_init(&bat_priv->tt_changes_list_lock);
-	spin_lock_init(&bat_priv->tt_req_list_lock);
-	spin_lock_init(&bat_priv->tt_roam_list_lock);
-	spin_lock_init(&bat_priv->tt_buff_lock);
-	spin_lock_init(&bat_priv->gw_list_lock);
-	spin_lock_init(&bat_priv->vis_hash_lock);
-	spin_lock_init(&bat_priv->vis_list_lock);
+	spin_lock_init(&bat_priv->tt.changes_list_lock);
+	spin_lock_init(&bat_priv->tt.req_list_lock);
+	spin_lock_init(&bat_priv->tt.roam_list_lock);
+	spin_lock_init(&bat_priv->tt.last_changeset_lock);
+	spin_lock_init(&bat_priv->gw.list_lock);
+	spin_lock_init(&bat_priv->vis.hash_lock);
+	spin_lock_init(&bat_priv->vis.list_lock);
 
 	INIT_HLIST_HEAD(&bat_priv->forw_bat_list);
 	INIT_HLIST_HEAD(&bat_priv->forw_bcast_list);
-	INIT_HLIST_HEAD(&bat_priv->gw_list);
-	INIT_LIST_HEAD(&bat_priv->tt_changes_list);
-	INIT_LIST_HEAD(&bat_priv->tt_req_list);
-	INIT_LIST_HEAD(&bat_priv->tt_roam_list);
+	INIT_HLIST_HEAD(&bat_priv->gw.list);
+	INIT_LIST_HEAD(&bat_priv->tt.changes_list);
+	INIT_LIST_HEAD(&bat_priv->tt.req_list);
+	INIT_LIST_HEAD(&bat_priv->tt.roam_list);
 
 	ret = batadv_originator_init(bat_priv);
 	if (ret < 0)
@@ -131,7 +128,7 @@ int batadv_mesh_init(struct net_device *soft_iface)
 	if (ret < 0)
 		goto err;
 
-	atomic_set(&bat_priv->gw_reselect, 0);
+	atomic_set(&bat_priv->gw.reselect, 0);
 	atomic_set(&bat_priv->mesh_state, BATADV_MESH_ACTIVE);
 
 	return 0;
diff --git a/net/batman-adv/main.h b/net/batman-adv/main.h
index 5d8fa0757947..d57b746219de 100644
--- a/net/batman-adv/main.h
+++ b/net/batman-adv/main.h
@@ -26,7 +26,7 @@
 #define BATADV_DRIVER_DEVICE "batman-adv"
 
 #ifndef BATADV_SOURCE_VERSION
-#define BATADV_SOURCE_VERSION "2012.3.0"
+#define BATADV_SOURCE_VERSION "2012.4.0"
 #endif
 
 /* B.A.T.M.A.N. parameters */
@@ -41,13 +41,14 @@
  * -> TODO: check influence on BATADV_TQ_LOCAL_WINDOW_SIZE
  */
 #define BATADV_PURGE_TIMEOUT 200000 /* 200 seconds */
-#define BATADV_TT_LOCAL_TIMEOUT 3600000 /* in miliseconds */
-#define BATADV_TT_CLIENT_ROAM_TIMEOUT 600000 /* in miliseconds */
+#define BATADV_TT_LOCAL_TIMEOUT 3600000 /* in milliseconds */
+#define BATADV_TT_CLIENT_ROAM_TIMEOUT 600000 /* in milliseconds */
+#define BATADV_TT_CLIENT_TEMP_TIMEOUT 600000 /* in milliseconds */
 /* sliding packet range of received originator messages in sequence numbers
  * (should be a multiple of our word size)
  */
 #define BATADV_TQ_LOCAL_WINDOW_SIZE 64
-/* miliseconds we have to keep pending tt_req */
+/* milliseconds we have to keep pending tt_req */
 #define BATADV_TT_REQUEST_TIMEOUT 3000
 
 #define BATADV_TQ_GLOBAL_WINDOW_SIZE 5
@@ -59,7 +60,7 @@
 #define BATADV_TT_OGM_APPEND_MAX 3
 
 /* Time in which a client can roam at most ROAMING_MAX_COUNT times in
- * miliseconds
+ * milliseconds
  */
 #define BATADV_ROAMING_MAX_TIME 20000
 #define BATADV_ROAMING_MAX_COUNT 5
@@ -123,15 +124,6 @@ enum batadv_uev_type {
 /* Append 'batman-adv: ' before kernel messages */
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
-/* all messages related to routing / flooding / broadcasting / etc */
-enum batadv_dbg_level {
-	BATADV_DBG_BATMAN = 1 << 0,
-	BATADV_DBG_ROUTES = 1 << 1, /* route added / changed / deleted */
-	BATADV_DBG_TT	  = 1 << 2, /* translation table operations */
-	BATADV_DBG_BLA    = 1 << 3, /* bridge loop avoidance */
-	BATADV_DBG_ALL    = 15,
-};
-
 /* Kernel headers */
 
 #include <linux/mutex.h>	/* mutex */
@@ -173,6 +165,15 @@ int batadv_algo_register(struct batadv_algo_ops *bat_algo_ops);
 int batadv_algo_select(struct batadv_priv *bat_priv, char *name);
 int batadv_algo_seq_print_text(struct seq_file *seq, void *offset);
 
+/* all messages related to routing / flooding / broadcasting / etc */
+enum batadv_dbg_level {
+	BATADV_DBG_BATMAN = BIT(0),
+	BATADV_DBG_ROUTES = BIT(1), /* route added / changed / deleted */
+	BATADV_DBG_TT	  = BIT(2), /* translation table operations */
+	BATADV_DBG_BLA    = BIT(3), /* bridge loop avoidance */
+	BATADV_DBG_ALL    = 15,
+};
+
 #ifdef CONFIG_BATMAN_ADV_DEBUG
 int batadv_debug_log(struct batadv_priv *bat_priv, const char *fmt, ...)
 __printf(2, 3);
diff --git a/net/batman-adv/packet.h b/net/batman-adv/packet.h
index 8d3e55a96adc..2d23a14c220e 100644
--- a/net/batman-adv/packet.h
+++ b/net/batman-adv/packet.h
@@ -37,10 +37,10 @@ enum batadv_packettype {
 #define BATADV_COMPAT_VERSION 14
 
 enum batadv_iv_flags {
-	BATADV_NOT_BEST_NEXT_HOP   = 1 << 3,
-	BATADV_PRIMARIES_FIRST_HOP = 1 << 4,
-	BATADV_VIS_SERVER	   = 1 << 5,
-	BATADV_DIRECTLINK	   = 1 << 6,
+	BATADV_NOT_BEST_NEXT_HOP   = BIT(3),
+	BATADV_PRIMARIES_FIRST_HOP = BIT(4),
+	BATADV_VIS_SERVER	   = BIT(5),
+	BATADV_DIRECTLINK	   = BIT(6),
 };
 
 /* ICMP message types */
@@ -60,8 +60,8 @@ enum batadv_vis_packettype {
 
 /* fragmentation defines */
 enum batadv_unicast_frag_flags {
-	BATADV_UNI_FRAG_HEAD	  = 1 << 0,
-	BATADV_UNI_FRAG_LARGETAIL = 1 << 1,
+	BATADV_UNI_FRAG_HEAD	  = BIT(0),
+	BATADV_UNI_FRAG_LARGETAIL = BIT(1),
 };
 
 /* TT_QUERY subtypes */
@@ -74,26 +74,27 @@ enum batadv_tt_query_packettype {
 
 /* TT_QUERY flags */
 enum batadv_tt_query_flags {
-	BATADV_TT_FULL_TABLE = 1 << 2,
+	BATADV_TT_FULL_TABLE = BIT(2),
 };
 
 /* BATADV_TT_CLIENT flags.
- * Flags from 1 to 1 << 7 are sent on the wire, while flags from 1 << 8 to
- * 1 << 15 are used for local computation only
+ * Flags from BIT(0) to BIT(7) are sent on the wire, while flags from BIT(8) to
+ * BIT(15) are used for local computation only
  */
 enum batadv_tt_client_flags {
-	BATADV_TT_CLIENT_DEL     = 1 << 0,
-	BATADV_TT_CLIENT_ROAM    = 1 << 1,
-	BATADV_TT_CLIENT_WIFI    = 1 << 2,
-	BATADV_TT_CLIENT_NOPURGE = 1 << 8,
-	BATADV_TT_CLIENT_NEW     = 1 << 9,
-	BATADV_TT_CLIENT_PENDING = 1 << 10,
+	BATADV_TT_CLIENT_DEL     = BIT(0),
+	BATADV_TT_CLIENT_ROAM    = BIT(1),
+	BATADV_TT_CLIENT_WIFI    = BIT(2),
+	BATADV_TT_CLIENT_TEMP	 = BIT(3),
+	BATADV_TT_CLIENT_NOPURGE = BIT(8),
+	BATADV_TT_CLIENT_NEW     = BIT(9),
+	BATADV_TT_CLIENT_PENDING = BIT(10),
 };
 
 /* claim frame types for the bridge loop avoidance */
 enum batadv_bla_claimframe {
-	BATADV_CLAIM_TYPE_ADD		= 0x00,
-	BATADV_CLAIM_TYPE_DEL		= 0x01,
+	BATADV_CLAIM_TYPE_CLAIM		= 0x00,
+	BATADV_CLAIM_TYPE_UNCLAIM	= 0x01,
 	BATADV_CLAIM_TYPE_ANNOUNCE	= 0x02,
 	BATADV_CLAIM_TYPE_REQUEST	= 0x03,
 };
diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c
index bc2b88bbea1f..939fc01371df 100644
--- a/net/batman-adv/routing.c
+++ b/net/batman-adv/routing.c
@@ -579,32 +579,45 @@ batadv_find_ifalter_router(struct batadv_orig_node *primary_orig,
 	return router;
 }
 
-int batadv_recv_tt_query(struct sk_buff *skb, struct batadv_hard_iface *recv_if)
+static int batadv_check_unicast_packet(struct sk_buff *skb, int hdr_size)
 {
-	struct batadv_priv *bat_priv = netdev_priv(recv_if->soft_iface);
-	struct batadv_tt_query_packet *tt_query;
-	uint16_t tt_size;
 	struct ethhdr *ethhdr;
-	char tt_flag;
-	size_t packet_size;
 
 	/* drop packet if it has not necessary minimum size */
-	if (unlikely(!pskb_may_pull(skb,
-				    sizeof(struct batadv_tt_query_packet))))
-		goto out;
-
-	/* I could need to modify it */
-	if (skb_cow(skb, sizeof(struct batadv_tt_query_packet)) < 0)
-		goto out;
+	if (unlikely(!pskb_may_pull(skb, hdr_size)))
+		return -1;
 
 	ethhdr = (struct ethhdr *)skb_mac_header(skb);
 
 	/* packet with unicast indication but broadcast recipient */
 	if (is_broadcast_ether_addr(ethhdr->h_dest))
-		goto out;
+		return -1;
 
 	/* packet with broadcast sender address */
 	if (is_broadcast_ether_addr(ethhdr->h_source))
+		return -1;
+
+	/* not for me */
+	if (!batadv_is_my_mac(ethhdr->h_dest))
+		return -1;
+
+	return 0;
+}
+
+int batadv_recv_tt_query(struct sk_buff *skb, struct batadv_hard_iface *recv_if)
+{
+	struct batadv_priv *bat_priv = netdev_priv(recv_if->soft_iface);
+	struct batadv_tt_query_packet *tt_query;
+	uint16_t tt_size;
+	int hdr_size = sizeof(*tt_query);
+	char tt_flag;
+	size_t packet_size;
+
+	if (batadv_check_unicast_packet(skb, hdr_size) < 0)
+		return NET_RX_DROP;
+
+	/* I could need to modify it */
+	if (skb_cow(skb, sizeof(struct batadv_tt_query_packet)) < 0)
 		goto out;
 
 	tt_query = (struct batadv_tt_query_packet *)skb->data;
@@ -721,7 +734,7 @@ int batadv_recv_roam_adv(struct sk_buff *skb, struct batadv_hard_iface *recv_if)
 	 * been incremented yet. This flag will make me check all the incoming
 	 * packets for the correct destination.
 	 */
-	bat_priv->tt_poss_change = true;
+	bat_priv->tt.poss_change = true;
 
 	batadv_orig_node_free_ref(orig_node);
 out:
@@ -819,31 +832,6 @@ err:
 	return NULL;
 }
 
-static int batadv_check_unicast_packet(struct sk_buff *skb, int hdr_size)
-{
-	struct ethhdr *ethhdr;
-
-	/* drop packet if it has not necessary minimum size */
-	if (unlikely(!pskb_may_pull(skb, hdr_size)))
-		return -1;
-
-	ethhdr = (struct ethhdr *)skb_mac_header(skb);
-
-	/* packet with unicast indication but broadcast recipient */
-	if (is_broadcast_ether_addr(ethhdr->h_dest))
-		return -1;
-
-	/* packet with broadcast sender address */
-	if (is_broadcast_ether_addr(ethhdr->h_source))
-		return -1;
-
-	/* not for me */
-	if (!batadv_is_my_mac(ethhdr->h_dest))
-		return -1;
-
-	return 0;
-}
-
 static int batadv_route_unicast_packet(struct sk_buff *skb,
 				       struct batadv_hard_iface *recv_if)
 {
@@ -947,8 +935,8 @@ static int batadv_check_unicast_ttvn(struct batadv_priv *bat_priv,
 	unicast_packet = (struct batadv_unicast_packet *)skb->data;
 
 	if (batadv_is_my_mac(unicast_packet->dest)) {
-		tt_poss_change = bat_priv->tt_poss_change;
-		curr_ttvn = (uint8_t)atomic_read(&bat_priv->ttvn);
+		tt_poss_change = bat_priv->tt.poss_change;
+		curr_ttvn = (uint8_t)atomic_read(&bat_priv->tt.vn);
 	} else {
 		orig_node = batadv_orig_hash_find(bat_priv,
 						  unicast_packet->dest);
@@ -993,8 +981,7 @@ static int batadv_check_unicast_ttvn(struct batadv_priv *bat_priv,
 		} else {
 			memcpy(unicast_packet->dest, orig_node->orig,
 			       ETH_ALEN);
-			curr_ttvn = (uint8_t)
-				atomic_read(&orig_node->last_ttvn);
+			curr_ttvn = (uint8_t)atomic_read(&orig_node->last_ttvn);
 			batadv_orig_node_free_ref(orig_node);
 		}
 
@@ -1025,8 +1012,9 @@ int batadv_recv_unicast_packet(struct sk_buff *skb,
 
 	/* packet for me */
 	if (batadv_is_my_mac(unicast_packet->dest)) {
-		batadv_interface_rx(recv_if->soft_iface, skb, recv_if,
-				    hdr_size);
+		batadv_interface_rx(recv_if->soft_iface, skb, recv_if, hdr_size,
+				    NULL);
+
 		return NET_RX_SUCCESS;
 	}
 
@@ -1063,7 +1051,7 @@ int batadv_recv_ucast_frag_packet(struct sk_buff *skb,
 			return NET_RX_SUCCESS;
 
 		batadv_interface_rx(recv_if->soft_iface, new_skb, recv_if,
-				    sizeof(struct batadv_unicast_packet));
+				    sizeof(struct batadv_unicast_packet), NULL);
 		return NET_RX_SUCCESS;
 	}
 
@@ -1150,7 +1138,8 @@ int batadv_recv_bcast_packet(struct sk_buff *skb,
 		goto out;
 
 	/* broadcast for me */
-	batadv_interface_rx(recv_if->soft_iface, skb, recv_if, hdr_size);
+	batadv_interface_rx(recv_if->soft_iface, skb, recv_if, hdr_size,
+			    orig_node);
 	ret = NET_RX_SUCCESS;
 	goto out;
 
diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c
index 3b4b2daa3b3e..570a8bce0364 100644
--- a/net/batman-adv/send.c
+++ b/net/batman-adv/send.c
@@ -190,13 +190,13 @@ out:
 static void batadv_send_outstanding_bcast_packet(struct work_struct *work)
 {
 	struct batadv_hard_iface *hard_iface;
-	struct delayed_work *delayed_work =
-		container_of(work, struct delayed_work, work);
+	struct delayed_work *delayed_work;
 	struct batadv_forw_packet *forw_packet;
 	struct sk_buff *skb1;
 	struct net_device *soft_iface;
 	struct batadv_priv *bat_priv;
 
+	delayed_work = container_of(work, struct delayed_work, work);
 	forw_packet = container_of(delayed_work, struct batadv_forw_packet,
 				   delayed_work);
 	soft_iface = forw_packet->if_incoming->soft_iface;
@@ -239,11 +239,11 @@ out:
 
 void batadv_send_outstanding_bat_ogm_packet(struct work_struct *work)
 {
-	struct delayed_work *delayed_work =
-		container_of(work, struct delayed_work, work);
+	struct delayed_work *delayed_work;
 	struct batadv_forw_packet *forw_packet;
 	struct batadv_priv *bat_priv;
 
+	delayed_work = container_of(work, struct delayed_work, work);
 	forw_packet = container_of(delayed_work, struct batadv_forw_packet,
 				   delayed_work);
 	bat_priv = netdev_priv(forw_packet->if_incoming->soft_iface);
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index 109ea2aae96c..7b683e0bd668 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -93,7 +93,14 @@ static int batadv_interface_release(struct net_device *dev)
 static struct net_device_stats *batadv_interface_stats(struct net_device *dev)
 {
 	struct batadv_priv *bat_priv = netdev_priv(dev);
-	return &bat_priv->stats;
+	struct net_device_stats *stats = &bat_priv->stats;
+
+	stats->tx_packets = batadv_sum_counter(bat_priv, BATADV_CNT_TX);
+	stats->tx_bytes = batadv_sum_counter(bat_priv, BATADV_CNT_TX_BYTES);
+	stats->tx_dropped = batadv_sum_counter(bat_priv, BATADV_CNT_TX_DROPPED);
+	stats->rx_packets = batadv_sum_counter(bat_priv, BATADV_CNT_RX);
+	stats->rx_bytes = batadv_sum_counter(bat_priv, BATADV_CNT_RX_BYTES);
+	return stats;
 }
 
 static int batadv_interface_set_mac_addr(struct net_device *dev, void *p)
@@ -142,6 +149,7 @@ static int batadv_interface_tx(struct sk_buff *skb,
 	int data_len = skb->len, ret;
 	short vid __maybe_unused = -1;
 	bool do_bcast = false;
+	uint32_t seqno;
 
 	if (atomic_read(&bat_priv->mesh_state) != BATADV_MESH_ACTIVE)
 		goto dropped;
@@ -223,8 +231,8 @@ static int batadv_interface_tx(struct sk_buff *skb,
 		       primary_if->net_dev->dev_addr, ETH_ALEN);
 
 		/* set broadcast sequence number */
-		bcast_packet->seqno =
-			htonl(atomic_inc_return(&bat_priv->bcast_seqno));
+		seqno = atomic_inc_return(&bat_priv->bcast_seqno);
+		bcast_packet->seqno = htonl(seqno);
 
 		batadv_add_bcast_packet_to_list(bat_priv, skb, 1);
 
@@ -246,14 +254,14 @@ static int batadv_interface_tx(struct sk_buff *skb,
 			goto dropped_freed;
 	}
 
-	bat_priv->stats.tx_packets++;
-	bat_priv->stats.tx_bytes += data_len;
+	batadv_inc_counter(bat_priv, BATADV_CNT_TX);
+	batadv_add_counter(bat_priv, BATADV_CNT_TX_BYTES, data_len);
 	goto end;
 
 dropped:
 	kfree_skb(skb);
 dropped_freed:
-	bat_priv->stats.tx_dropped++;
+	batadv_inc_counter(bat_priv, BATADV_CNT_TX_DROPPED);
 end:
 	if (primary_if)
 		batadv_hardif_free_ref(primary_if);
@@ -262,7 +270,7 @@ end:
 
 void batadv_interface_rx(struct net_device *soft_iface,
 			 struct sk_buff *skb, struct batadv_hard_iface *recv_if,
-			 int hdr_size)
+			 int hdr_size, struct batadv_orig_node *orig_node)
 {
 	struct batadv_priv *bat_priv = netdev_priv(soft_iface);
 	struct ethhdr *ethhdr;
@@ -308,11 +316,16 @@ void batadv_interface_rx(struct net_device *soft_iface,
 
 	/* skb->ip_summed = CHECKSUM_UNNECESSARY; */
 
-	bat_priv->stats.rx_packets++;
-	bat_priv->stats.rx_bytes += skb->len + ETH_HLEN;
+	batadv_inc_counter(bat_priv, BATADV_CNT_RX);
+	batadv_add_counter(bat_priv, BATADV_CNT_RX_BYTES,
+			   skb->len + ETH_HLEN);
 
 	soft_iface->last_rx = jiffies;
 
+	if (orig_node)
+		batadv_tt_add_temporary_global_entry(bat_priv, orig_node,
+						     ethhdr->h_source);
+
 	if (batadv_is_ap_isolated(bat_priv, ethhdr->h_source, ethhdr->h_dest))
 		goto dropped;
 
@@ -379,15 +392,22 @@ struct net_device *batadv_softif_create(const char *name)
 	if (!soft_iface)
 		goto out;
 
+	bat_priv = netdev_priv(soft_iface);
+
+	/* batadv_interface_stats() needs to be available as soon as
+	 * register_netdevice() has been called
+	 */
+	bat_priv->bat_counters = __alloc_percpu(cnt_len, __alignof__(uint64_t));
+	if (!bat_priv->bat_counters)
+		goto free_soft_iface;
+
 	ret = register_netdevice(soft_iface);
 	if (ret < 0) {
 		pr_err("Unable to register the batman interface '%s': %i\n",
 		       name, ret);
-		goto free_soft_iface;
+		goto free_bat_counters;
 	}
 
-	bat_priv = netdev_priv(soft_iface);
-
 	atomic_set(&bat_priv->aggregated_ogms, 1);
 	atomic_set(&bat_priv->bonding, 0);
 	atomic_set(&bat_priv->bridge_loop_avoidance, 0);
@@ -405,29 +425,26 @@ struct net_device *batadv_softif_create(const char *name)
 
 	atomic_set(&bat_priv->mesh_state, BATADV_MESH_INACTIVE);
 	atomic_set(&bat_priv->bcast_seqno, 1);
-	atomic_set(&bat_priv->ttvn, 0);
-	atomic_set(&bat_priv->tt_local_changes, 0);
-	atomic_set(&bat_priv->tt_ogm_append_cnt, 0);
-	atomic_set(&bat_priv->bla_num_requests, 0);
-
-	bat_priv->tt_buff = NULL;
-	bat_priv->tt_buff_len = 0;
-	bat_priv->tt_poss_change = false;
+	atomic_set(&bat_priv->tt.vn, 0);
+	atomic_set(&bat_priv->tt.local_changes, 0);
+	atomic_set(&bat_priv->tt.ogm_append_cnt, 0);
+#ifdef CONFIG_BATMAN_ADV_BLA
+	atomic_set(&bat_priv->bla.num_requests, 0);
+#endif
+	bat_priv->tt.last_changeset = NULL;
+	bat_priv->tt.last_changeset_len = 0;
+	bat_priv->tt.poss_change = false;
 
 	bat_priv->primary_if = NULL;
 	bat_priv->num_ifaces = 0;
 
-	bat_priv->bat_counters = __alloc_percpu(cnt_len, __alignof__(uint64_t));
-	if (!bat_priv->bat_counters)
-		goto unreg_soft_iface;
-
 	ret = batadv_algo_select(bat_priv, batadv_routing_algo);
 	if (ret < 0)
-		goto free_bat_counters;
+		goto unreg_soft_iface;
 
 	ret = batadv_sysfs_add_meshif(soft_iface);
 	if (ret < 0)
-		goto free_bat_counters;
+		goto unreg_soft_iface;
 
 	ret = batadv_debugfs_add_meshif(soft_iface);
 	if (ret < 0)
@@ -443,12 +460,13 @@ unreg_debugfs:
 	batadv_debugfs_del_meshif(soft_iface);
 unreg_sysfs:
 	batadv_sysfs_del_meshif(soft_iface);
-free_bat_counters:
-	free_percpu(bat_priv->bat_counters);
 unreg_soft_iface:
+	free_percpu(bat_priv->bat_counters);
 	unregister_netdevice(soft_iface);
 	return NULL;
 
+free_bat_counters:
+	free_percpu(bat_priv->bat_counters);
 free_soft_iface:
 	free_netdev(soft_iface);
 out:
@@ -518,6 +536,11 @@ static u32 batadv_get_link(struct net_device *dev)
 static const struct {
 	const char name[ETH_GSTRING_LEN];
 } batadv_counters_strings[] = {
+	{ "tx" },
+	{ "tx_bytes" },
+	{ "tx_dropped" },
+	{ "rx" },
+	{ "rx_bytes" },
 	{ "forward" },
 	{ "forward_bytes" },
 	{ "mgmt_tx" },
diff --git a/net/batman-adv/soft-interface.h b/net/batman-adv/soft-interface.h
index 852c683b06a1..07a08fed28b9 100644
--- a/net/batman-adv/soft-interface.h
+++ b/net/batman-adv/soft-interface.h
@@ -21,8 +21,9 @@
 #define _NET_BATMAN_ADV_SOFT_INTERFACE_H_
 
 int batadv_skb_head_push(struct sk_buff *skb, unsigned int len);
-void batadv_interface_rx(struct net_device *soft_iface, struct sk_buff *skb,
-			 struct batadv_hard_iface *recv_if, int hdr_size);
+void batadv_interface_rx(struct net_device *soft_iface,
+			 struct sk_buff *skb, struct batadv_hard_iface *recv_if,
+			 int hdr_size, struct batadv_orig_node *orig_node);
 struct net_device *batadv_softif_create(const char *name);
 void batadv_softif_destroy(struct net_device *soft_iface);
 int batadv_softif_is_valid(const struct net_device *net_dev);
diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index 99dd8f75b3ff..112edd371b2f 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -34,6 +34,10 @@ static void batadv_send_roam_adv(struct batadv_priv *bat_priv, uint8_t *client,
 static void batadv_tt_purge(struct work_struct *work);
 static void
 batadv_tt_global_del_orig_list(struct batadv_tt_global_entry *tt_global_entry);
+static void batadv_tt_global_del(struct batadv_priv *bat_priv,
+				 struct batadv_orig_node *orig_node,
+				 const unsigned char *addr,
+				 const char *message, bool roaming);
 
 /* returns 1 if they are the same mac addr */
 static int batadv_compare_tt(const struct hlist_node *node, const void *data2)
@@ -46,8 +50,8 @@ static int batadv_compare_tt(const struct hlist_node *node, const void *data2)
 
 static void batadv_tt_start_timer(struct batadv_priv *bat_priv)
 {
-	INIT_DELAYED_WORK(&bat_priv->tt_work, batadv_tt_purge);
-	queue_delayed_work(batadv_event_workqueue, &bat_priv->tt_work,
+	INIT_DELAYED_WORK(&bat_priv->tt.work, batadv_tt_purge);
+	queue_delayed_work(batadv_event_workqueue, &bat_priv->tt.work,
 			   msecs_to_jiffies(5000));
 }
 
@@ -88,7 +92,7 @@ batadv_tt_local_hash_find(struct batadv_priv *bat_priv, const void *data)
 	struct batadv_tt_common_entry *tt_common_entry;
 	struct batadv_tt_local_entry *tt_local_entry = NULL;
 
-	tt_common_entry = batadv_tt_hash_find(bat_priv->tt_local_hash, data);
+	tt_common_entry = batadv_tt_hash_find(bat_priv->tt.local_hash, data);
 	if (tt_common_entry)
 		tt_local_entry = container_of(tt_common_entry,
 					      struct batadv_tt_local_entry,
@@ -102,7 +106,7 @@ batadv_tt_global_hash_find(struct batadv_priv *bat_priv, const void *data)
 	struct batadv_tt_common_entry *tt_common_entry;
 	struct batadv_tt_global_entry *tt_global_entry = NULL;
 
-	tt_common_entry = batadv_tt_hash_find(bat_priv->tt_global_hash, data);
+	tt_common_entry = batadv_tt_hash_find(bat_priv->tt.global_hash, data);
 	if (tt_common_entry)
 		tt_global_entry = container_of(tt_common_entry,
 					       struct batadv_tt_global_entry,
@@ -152,6 +156,8 @@ static void batadv_tt_orig_list_entry_free_rcu(struct rcu_head *rcu)
 static void
 batadv_tt_orig_list_entry_free_ref(struct batadv_tt_orig_list_entry *orig_entry)
 {
+	if (!atomic_dec_and_test(&orig_entry->refcount))
+		return;
 	/* to avoid race conditions, immediately decrease the tt counter */
 	atomic_dec(&orig_entry->orig_node->tt_size);
 	call_rcu(&orig_entry->rcu, batadv_tt_orig_list_entry_free_rcu);
@@ -175,8 +181,8 @@ static void batadv_tt_local_event(struct batadv_priv *bat_priv,
 	del_op_requested = flags & BATADV_TT_CLIENT_DEL;
 
 	/* check for ADD+DEL or DEL+ADD events */
-	spin_lock_bh(&bat_priv->tt_changes_list_lock);
-	list_for_each_entry_safe(entry, safe, &bat_priv->tt_changes_list,
+	spin_lock_bh(&bat_priv->tt.changes_list_lock);
+	list_for_each_entry_safe(entry, safe, &bat_priv->tt.changes_list,
 				 list) {
 		if (!batadv_compare_eth(entry->change.addr, addr))
 			continue;
@@ -203,15 +209,15 @@ del:
 	}
 
 	/* track the change in the OGMinterval list */
-	list_add_tail(&tt_change_node->list, &bat_priv->tt_changes_list);
+	list_add_tail(&tt_change_node->list, &bat_priv->tt.changes_list);
 
 unlock:
-	spin_unlock_bh(&bat_priv->tt_changes_list_lock);
+	spin_unlock_bh(&bat_priv->tt.changes_list_lock);
 
 	if (event_removed)
-		atomic_dec(&bat_priv->tt_local_changes);
+		atomic_dec(&bat_priv->tt.local_changes);
 	else
-		atomic_inc(&bat_priv->tt_local_changes);
+		atomic_inc(&bat_priv->tt.local_changes);
 }
 
 int batadv_tt_len(int changes_num)
@@ -221,12 +227,12 @@ int batadv_tt_len(int changes_num)
 
 static int batadv_tt_local_init(struct batadv_priv *bat_priv)
 {
-	if (bat_priv->tt_local_hash)
+	if (bat_priv->tt.local_hash)
 		return 0;
 
-	bat_priv->tt_local_hash = batadv_hash_new(1024);
+	bat_priv->tt.local_hash = batadv_hash_new(1024);
 
-	if (!bat_priv->tt_local_hash)
+	if (!bat_priv->tt.local_hash)
 		return -ENOMEM;
 
 	return 0;
@@ -258,7 +264,7 @@ void batadv_tt_local_add(struct net_device *soft_iface, const uint8_t *addr,
 
 	batadv_dbg(BATADV_DBG_TT, bat_priv,
 		   "Creating new local tt entry: %pM (ttvn: %d)\n", addr,
-		   (uint8_t)atomic_read(&bat_priv->ttvn));
+		   (uint8_t)atomic_read(&bat_priv->tt.vn));
 
 	memcpy(tt_local_entry->common.addr, addr, ETH_ALEN);
 	tt_local_entry->common.flags = BATADV_NO_FLAGS;
@@ -266,6 +272,7 @@ void batadv_tt_local_add(struct net_device *soft_iface, const uint8_t *addr,
 		tt_local_entry->common.flags |= BATADV_TT_CLIENT_WIFI;
 	atomic_set(&tt_local_entry->common.refcount, 2);
 	tt_local_entry->last_seen = jiffies;
+	tt_local_entry->common.added_at = tt_local_entry->last_seen;
 
 	/* the batman interface mac address should never be purged */
 	if (batadv_compare_eth(addr, soft_iface->dev_addr))
@@ -277,7 +284,7 @@ void batadv_tt_local_add(struct net_device *soft_iface, const uint8_t *addr,
 	 */
 	tt_local_entry->common.flags |= BATADV_TT_CLIENT_NEW;
 
-	hash_added = batadv_hash_add(bat_priv->tt_local_hash, batadv_compare_tt,
+	hash_added = batadv_hash_add(bat_priv->tt.local_hash, batadv_compare_tt,
 				     batadv_choose_orig,
 				     &tt_local_entry->common,
 				     &tt_local_entry->common.hash_entry);
@@ -348,7 +355,7 @@ static void batadv_tt_prepare_packet_buff(struct batadv_priv *bat_priv,
 	primary_if = batadv_primary_if_get_selected(bat_priv);
 
 	req_len = min_packet_len;
-	req_len += batadv_tt_len(atomic_read(&bat_priv->tt_local_changes));
+	req_len += batadv_tt_len(atomic_read(&bat_priv->tt.local_changes));
 
 	/* if we have too many changes for one packet don't send any
 	 * and wait for the tt table request which will be fragmented
@@ -381,10 +388,10 @@ static int batadv_tt_changes_fill_buff(struct batadv_priv *bat_priv,
 	if (new_len > 0)
 		tot_changes = new_len / batadv_tt_len(1);
 
-	spin_lock_bh(&bat_priv->tt_changes_list_lock);
-	atomic_set(&bat_priv->tt_local_changes, 0);
+	spin_lock_bh(&bat_priv->tt.changes_list_lock);
+	atomic_set(&bat_priv->tt.local_changes, 0);
 
-	list_for_each_entry_safe(entry, safe, &bat_priv->tt_changes_list,
+	list_for_each_entry_safe(entry, safe, &bat_priv->tt.changes_list,
 				 list) {
 		if (count < tot_changes) {
 			memcpy(tt_buff + batadv_tt_len(count),
@@ -394,25 +401,25 @@ static int batadv_tt_changes_fill_buff(struct batadv_priv *bat_priv,
 		list_del(&entry->list);
 		kfree(entry);
 	}
-	spin_unlock_bh(&bat_priv->tt_changes_list_lock);
+	spin_unlock_bh(&bat_priv->tt.changes_list_lock);
 
 	/* Keep the buffer for possible tt_request */
-	spin_lock_bh(&bat_priv->tt_buff_lock);
-	kfree(bat_priv->tt_buff);
-	bat_priv->tt_buff_len = 0;
-	bat_priv->tt_buff = NULL;
+	spin_lock_bh(&bat_priv->tt.last_changeset_lock);
+	kfree(bat_priv->tt.last_changeset);
+	bat_priv->tt.last_changeset_len = 0;
+	bat_priv->tt.last_changeset = NULL;
 	/* check whether this new OGM has no changes due to size problems */
 	if (new_len > 0) {
 		/* if kmalloc() fails we will reply with the full table
 		 * instead of providing the diff
 		 */
-		bat_priv->tt_buff = kmalloc(new_len, GFP_ATOMIC);
-		if (bat_priv->tt_buff) {
-			memcpy(bat_priv->tt_buff, tt_buff, new_len);
-			bat_priv->tt_buff_len = new_len;
+		bat_priv->tt.last_changeset = kmalloc(new_len, GFP_ATOMIC);
+		if (bat_priv->tt.last_changeset) {
+			memcpy(bat_priv->tt.last_changeset, tt_buff, new_len);
+			bat_priv->tt.last_changeset_len = new_len;
 		}
 	}
-	spin_unlock_bh(&bat_priv->tt_buff_lock);
+	spin_unlock_bh(&bat_priv->tt.last_changeset_lock);
 
 	return count;
 }
@@ -421,7 +428,7 @@ int batadv_tt_local_seq_print_text(struct seq_file *seq, void *offset)
 {
 	struct net_device *net_dev = (struct net_device *)seq->private;
 	struct batadv_priv *bat_priv = netdev_priv(net_dev);
-	struct batadv_hashtable *hash = bat_priv->tt_local_hash;
+	struct batadv_hashtable *hash = bat_priv->tt.local_hash;
 	struct batadv_tt_common_entry *tt_common_entry;
 	struct batadv_hard_iface *primary_if;
 	struct hlist_node *node;
@@ -446,7 +453,7 @@ int batadv_tt_local_seq_print_text(struct seq_file *seq, void *offset)
 
 	seq_printf(seq,
 		   "Locally retrieved addresses (from %s) announced via TT (TTVN: %u):\n",
-		   net_dev->name, (uint8_t)atomic_read(&bat_priv->ttvn));
+		   net_dev->name, (uint8_t)atomic_read(&bat_priv->tt.vn));
 
 	for (i = 0; i < hash->size; i++) {
 		head = &hash->table[i];
@@ -544,7 +551,7 @@ static void batadv_tt_local_purge_list(struct batadv_priv *bat_priv,
 
 static void batadv_tt_local_purge(struct batadv_priv *bat_priv)
 {
-	struct batadv_hashtable *hash = bat_priv->tt_local_hash;
+	struct batadv_hashtable *hash = bat_priv->tt.local_hash;
 	struct hlist_head *head;
 	spinlock_t *list_lock; /* protects write access to the hash lists */
 	uint32_t i;
@@ -570,10 +577,10 @@ static void batadv_tt_local_table_free(struct batadv_priv *bat_priv)
 	struct hlist_head *head;
 	uint32_t i;
 
-	if (!bat_priv->tt_local_hash)
+	if (!bat_priv->tt.local_hash)
 		return;
 
-	hash = bat_priv->tt_local_hash;
+	hash = bat_priv->tt.local_hash;
 
 	for (i = 0; i < hash->size; i++) {
 		head = &hash->table[i];
@@ -593,17 +600,17 @@ static void batadv_tt_local_table_free(struct batadv_priv *bat_priv)
 
 	batadv_hash_destroy(hash);
 
-	bat_priv->tt_local_hash = NULL;
+	bat_priv->tt.local_hash = NULL;
 }
 
 static int batadv_tt_global_init(struct batadv_priv *bat_priv)
 {
-	if (bat_priv->tt_global_hash)
+	if (bat_priv->tt.global_hash)
 		return 0;
 
-	bat_priv->tt_global_hash = batadv_hash_new(1024);
+	bat_priv->tt.global_hash = batadv_hash_new(1024);
 
-	if (!bat_priv->tt_global_hash)
+	if (!bat_priv->tt.global_hash)
 		return -ENOMEM;
 
 	return 0;
@@ -613,62 +620,99 @@ static void batadv_tt_changes_list_free(struct batadv_priv *bat_priv)
 {
 	struct batadv_tt_change_node *entry, *safe;
 
-	spin_lock_bh(&bat_priv->tt_changes_list_lock);
+	spin_lock_bh(&bat_priv->tt.changes_list_lock);
 
-	list_for_each_entry_safe(entry, safe, &bat_priv->tt_changes_list,
+	list_for_each_entry_safe(entry, safe, &bat_priv->tt.changes_list,
 				 list) {
 		list_del(&entry->list);
 		kfree(entry);
 	}
 
-	atomic_set(&bat_priv->tt_local_changes, 0);
-	spin_unlock_bh(&bat_priv->tt_changes_list_lock);
+	atomic_set(&bat_priv->tt.local_changes, 0);
+	spin_unlock_bh(&bat_priv->tt.changes_list_lock);
 }
 
-/* find out if an orig_node is already in the list of a tt_global_entry.
- * returns 1 if found, 0 otherwise
+/* retrieves the orig_tt_list_entry belonging to orig_node from the
+ * batadv_tt_global_entry list
+ *
+ * returns it with an increased refcounter, NULL if not found
  */
-static bool
-batadv_tt_global_entry_has_orig(const struct batadv_tt_global_entry *entry,
-				const struct batadv_orig_node *orig_node)
+static struct batadv_tt_orig_list_entry *
+batadv_tt_global_orig_entry_find(const struct batadv_tt_global_entry *entry,
+				 const struct batadv_orig_node *orig_node)
 {
-	struct batadv_tt_orig_list_entry *tmp_orig_entry;
+	struct batadv_tt_orig_list_entry *tmp_orig_entry, *orig_entry = NULL;
 	const struct hlist_head *head;
 	struct hlist_node *node;
-	bool found = false;
 
 	rcu_read_lock();
 	head = &entry->orig_list;
 	hlist_for_each_entry_rcu(tmp_orig_entry, node, head, list) {
-		if (tmp_orig_entry->orig_node == orig_node) {
-			found = true;
-			break;
-		}
+		if (tmp_orig_entry->orig_node != orig_node)
+			continue;
+		if (!atomic_inc_not_zero(&tmp_orig_entry->refcount))
+			continue;
+
+		orig_entry = tmp_orig_entry;
+		break;
 	}
 	rcu_read_unlock();
+
+	return orig_entry;
+}
+
+/* find out if an orig_node is already in the list of a tt_global_entry.
+ * returns true if found, false otherwise
+ */
+static bool
+batadv_tt_global_entry_has_orig(const struct batadv_tt_global_entry *entry,
+				const struct batadv_orig_node *orig_node)
+{
+	struct batadv_tt_orig_list_entry *orig_entry;
+	bool found = false;
+
+	orig_entry = batadv_tt_global_orig_entry_find(entry, orig_node);
+	if (orig_entry) {
+		found = true;
+		batadv_tt_orig_list_entry_free_ref(orig_entry);
+	}
+
 	return found;
 }
 
 static void
-batadv_tt_global_add_orig_entry(struct batadv_tt_global_entry *tt_global_entry,
+batadv_tt_global_orig_entry_add(struct batadv_tt_global_entry *tt_global,
 				struct batadv_orig_node *orig_node, int ttvn)
 {
 	struct batadv_tt_orig_list_entry *orig_entry;
 
+	orig_entry = batadv_tt_global_orig_entry_find(tt_global, orig_node);
+	if (orig_entry) {
+		/* refresh the ttvn: the current value could be a bogus one that
+		 * was added during a "temporary client detection"
+		 */
+		orig_entry->ttvn = ttvn;
+		goto out;
+	}
+
 	orig_entry = kzalloc(sizeof(*orig_entry), GFP_ATOMIC);
 	if (!orig_entry)
-		return;
+		goto out;
 
 	INIT_HLIST_NODE(&orig_entry->list);
 	atomic_inc(&orig_node->refcount);
 	atomic_inc(&orig_node->tt_size);
 	orig_entry->orig_node = orig_node;
 	orig_entry->ttvn = ttvn;
+	atomic_set(&orig_entry->refcount, 2);
 
-	spin_lock_bh(&tt_global_entry->list_lock);
+	spin_lock_bh(&tt_global->list_lock);
 	hlist_add_head_rcu(&orig_entry->list,
-			   &tt_global_entry->orig_list);
-	spin_unlock_bh(&tt_global_entry->list_lock);
+			   &tt_global->orig_list);
+	spin_unlock_bh(&tt_global->list_lock);
+out:
+	if (orig_entry)
+		batadv_tt_orig_list_entry_free_ref(orig_entry);
 }
 
 /* caller must hold orig_node refcount */
@@ -695,11 +739,12 @@ int batadv_tt_global_add(struct batadv_priv *bat_priv,
 		common->flags = flags;
 		tt_global_entry->roam_at = 0;
 		atomic_set(&common->refcount, 2);
+		common->added_at = jiffies;
 
 		INIT_HLIST_HEAD(&tt_global_entry->orig_list);
 		spin_lock_init(&tt_global_entry->list_lock);
 
-		hash_added = batadv_hash_add(bat_priv->tt_global_hash,
+		hash_added = batadv_hash_add(bat_priv->tt.global_hash,
 					     batadv_compare_tt,
 					     batadv_choose_orig, common,
 					     &common->hash_entry);
@@ -709,11 +754,20 @@ int batadv_tt_global_add(struct batadv_priv *bat_priv,
 			batadv_tt_global_entry_free_ref(tt_global_entry);
 			goto out_remove;
 		}
-
-		batadv_tt_global_add_orig_entry(tt_global_entry, orig_node,
-						ttvn);
 	} else {
-		/* there is already a global entry, use this one. */
+		/* If there is already a global entry, we can use this one for
+		 * our processing.
+		 * But if we are trying to add a temporary client we can exit
+		 * directly because the temporary information should never
+		 * override any already known client state (whatever it is)
+		 */
+		if (flags & BATADV_TT_CLIENT_TEMP)
+			goto out;
+
+		/* if the client was temporary added before receiving the first
+		 * OGM announcing it, we have to clear the TEMP flag
+		 */
+		tt_global_entry->common.flags &= ~BATADV_TT_CLIENT_TEMP;
 
 		/* If there is the BATADV_TT_CLIENT_ROAM flag set, there is only
 		 * one originator left in the list and we previously received a
@@ -727,12 +781,9 @@ int batadv_tt_global_add(struct batadv_priv *bat_priv,
 			tt_global_entry->common.flags &= ~BATADV_TT_CLIENT_ROAM;
 			tt_global_entry->roam_at = 0;
 		}
-
-		if (!batadv_tt_global_entry_has_orig(tt_global_entry,
-						     orig_node))
-			batadv_tt_global_add_orig_entry(tt_global_entry,
-							orig_node, ttvn);
 	}
+	/* add the new orig_entry (if needed) or update it */
+	batadv_tt_global_orig_entry_add(tt_global_entry, orig_node, ttvn);
 
 	batadv_dbg(BATADV_DBG_TT, bat_priv,
 		   "Creating new global tt entry: %pM (via %pM)\n",
@@ -771,11 +822,12 @@ batadv_tt_global_print_entry(struct batadv_tt_global_entry *tt_global_entry,
 	hlist_for_each_entry_rcu(orig_entry, node, head, list) {
 		flags = tt_common_entry->flags;
 		last_ttvn = atomic_read(&orig_entry->orig_node->last_ttvn);
-		seq_printf(seq, " * %pM  (%3u) via %pM     (%3u)   [%c%c]\n",
+		seq_printf(seq,	" * %pM  (%3u) via %pM     (%3u)   [%c%c%c]\n",
 			   tt_global_entry->common.addr, orig_entry->ttvn,
 			   orig_entry->orig_node->orig, last_ttvn,
 			   (flags & BATADV_TT_CLIENT_ROAM ? 'R' : '.'),
-			   (flags & BATADV_TT_CLIENT_WIFI ? 'W' : '.'));
+			   (flags & BATADV_TT_CLIENT_WIFI ? 'W' : '.'),
+			   (flags & BATADV_TT_CLIENT_TEMP ? 'T' : '.'));
 	}
 }
 
@@ -783,7 +835,7 @@ int batadv_tt_global_seq_print_text(struct seq_file *seq, void *offset)
 {
 	struct net_device *net_dev = (struct net_device *)seq->private;
 	struct batadv_priv *bat_priv = netdev_priv(net_dev);
-	struct batadv_hashtable *hash = bat_priv->tt_global_hash;
+	struct batadv_hashtable *hash = bat_priv->tt.global_hash;
 	struct batadv_tt_common_entry *tt_common_entry;
 	struct batadv_tt_global_entry *tt_global;
 	struct batadv_hard_iface *primary_if;
@@ -884,7 +936,7 @@ batadv_tt_global_del_struct(struct batadv_priv *bat_priv,
 		   "Deleting global tt entry %pM: %s\n",
 		   tt_global_entry->common.addr, message);
 
-	batadv_hash_remove(bat_priv->tt_global_hash, batadv_compare_tt,
+	batadv_hash_remove(bat_priv->tt.global_hash, batadv_compare_tt,
 			   batadv_choose_orig, tt_global_entry->common.addr);
 	batadv_tt_global_entry_free_ref(tt_global_entry);
 
@@ -995,7 +1047,7 @@ void batadv_tt_global_del_orig(struct batadv_priv *bat_priv,
 	struct batadv_tt_global_entry *tt_global;
 	struct batadv_tt_common_entry *tt_common_entry;
 	uint32_t i;
-	struct batadv_hashtable *hash = bat_priv->tt_global_hash;
+	struct batadv_hashtable *hash = bat_priv->tt.global_hash;
 	struct hlist_node *node, *safe;
 	struct hlist_head *head;
 	spinlock_t *list_lock; /* protects write access to the hash lists */
@@ -1030,49 +1082,63 @@ void batadv_tt_global_del_orig(struct batadv_priv *bat_priv,
 	orig_node->tt_initialised = false;
 }
 
-static void batadv_tt_global_roam_purge_list(struct batadv_priv *bat_priv,
-					     struct hlist_head *head)
+static bool batadv_tt_global_to_purge(struct batadv_tt_global_entry *tt_global,
+				      char **msg)
 {
-	struct batadv_tt_common_entry *tt_common_entry;
-	struct batadv_tt_global_entry *tt_global_entry;
-	struct hlist_node *node, *node_tmp;
-
-	hlist_for_each_entry_safe(tt_common_entry, node, node_tmp, head,
-				  hash_entry) {
-		tt_global_entry = container_of(tt_common_entry,
-					       struct batadv_tt_global_entry,
-					       common);
-		if (!(tt_global_entry->common.flags & BATADV_TT_CLIENT_ROAM))
-			continue;
-		if (!batadv_has_timed_out(tt_global_entry->roam_at,
-					  BATADV_TT_CLIENT_ROAM_TIMEOUT))
-			continue;
+	bool purge = false;
+	unsigned long roam_timeout = BATADV_TT_CLIENT_ROAM_TIMEOUT;
+	unsigned long temp_timeout = BATADV_TT_CLIENT_TEMP_TIMEOUT;
 
-		batadv_dbg(BATADV_DBG_TT, bat_priv,
-			   "Deleting global tt entry (%pM): Roaming timeout\n",
-			   tt_global_entry->common.addr);
+	if ((tt_global->common.flags & BATADV_TT_CLIENT_ROAM) &&
+	    batadv_has_timed_out(tt_global->roam_at, roam_timeout)) {
+		purge = true;
+		*msg = "Roaming timeout\n";
+	}
 
-		hlist_del_rcu(node);
-		batadv_tt_global_entry_free_ref(tt_global_entry);
+	if ((tt_global->common.flags & BATADV_TT_CLIENT_TEMP) &&
+	    batadv_has_timed_out(tt_global->common.added_at, temp_timeout)) {
+		purge = true;
+		*msg = "Temporary client timeout\n";
 	}
+
+	return purge;
 }
 
-static void batadv_tt_global_roam_purge(struct batadv_priv *bat_priv)
+static void batadv_tt_global_purge(struct batadv_priv *bat_priv)
 {
-	struct batadv_hashtable *hash = bat_priv->tt_global_hash;
+	struct batadv_hashtable *hash = bat_priv->tt.global_hash;
 	struct hlist_head *head;
+	struct hlist_node *node, *node_tmp;
 	spinlock_t *list_lock; /* protects write access to the hash lists */
 	uint32_t i;
+	char *msg = NULL;
+	struct batadv_tt_common_entry *tt_common;
+	struct batadv_tt_global_entry *tt_global;
 
 	for (i = 0; i < hash->size; i++) {
 		head = &hash->table[i];
 		list_lock = &hash->list_locks[i];
 
 		spin_lock_bh(list_lock);
-		batadv_tt_global_roam_purge_list(bat_priv, head);
+		hlist_for_each_entry_safe(tt_common, node, node_tmp, head,
+					  hash_entry) {
+			tt_global = container_of(tt_common,
+						 struct batadv_tt_global_entry,
+						 common);
+
+			if (!batadv_tt_global_to_purge(tt_global, &msg))
+				continue;
+
+			batadv_dbg(BATADV_DBG_TT, bat_priv,
+				   "Deleting global tt entry (%pM): %s\n",
+				   tt_global->common.addr, msg);
+
+			hlist_del_rcu(node);
+
+			batadv_tt_global_entry_free_ref(tt_global);
+		}
 		spin_unlock_bh(list_lock);
 	}
-
 }
 
 static void batadv_tt_global_table_free(struct batadv_priv *bat_priv)
@@ -1085,10 +1151,10 @@ static void batadv_tt_global_table_free(struct batadv_priv *bat_priv)
 	struct hlist_head *head;
 	uint32_t i;
 
-	if (!bat_priv->tt_global_hash)
+	if (!bat_priv->tt.global_hash)
 		return;
 
-	hash = bat_priv->tt_global_hash;
+	hash = bat_priv->tt.global_hash;
 
 	for (i = 0; i < hash->size; i++) {
 		head = &hash->table[i];
@@ -1108,7 +1174,7 @@ static void batadv_tt_global_table_free(struct batadv_priv *bat_priv)
 
 	batadv_hash_destroy(hash);
 
-	bat_priv->tt_global_hash = NULL;
+	bat_priv->tt.global_hash = NULL;
 }
 
 static bool
@@ -1187,7 +1253,7 @@ static uint16_t batadv_tt_global_crc(struct batadv_priv *bat_priv,
 				     struct batadv_orig_node *orig_node)
 {
 	uint16_t total = 0, total_one;
-	struct batadv_hashtable *hash = bat_priv->tt_global_hash;
+	struct batadv_hashtable *hash = bat_priv->tt.global_hash;
 	struct batadv_tt_common_entry *tt_common;
 	struct batadv_tt_global_entry *tt_global;
 	struct hlist_node *node;
@@ -1210,6 +1276,12 @@ static uint16_t batadv_tt_global_crc(struct batadv_priv *bat_priv,
 			 */
 			if (tt_common->flags & BATADV_TT_CLIENT_ROAM)
 				continue;
+			/* Temporary clients have not been announced yet, so
+			 * they have to be skipped while computing the global
+			 * crc
+			 */
+			if (tt_common->flags & BATADV_TT_CLIENT_TEMP)
+				continue;
 
 			/* find out if this global entry is announced by this
 			 * originator
@@ -1234,7 +1306,7 @@ static uint16_t batadv_tt_global_crc(struct batadv_priv *bat_priv,
 static uint16_t batadv_tt_local_crc(struct batadv_priv *bat_priv)
 {
 	uint16_t total = 0, total_one;
-	struct batadv_hashtable *hash = bat_priv->tt_local_hash;
+	struct batadv_hashtable *hash = bat_priv->tt.local_hash;
 	struct batadv_tt_common_entry *tt_common;
 	struct hlist_node *node;
 	struct hlist_head *head;
@@ -1267,14 +1339,14 @@ static void batadv_tt_req_list_free(struct batadv_priv *bat_priv)
 {
 	struct batadv_tt_req_node *node, *safe;
 
-	spin_lock_bh(&bat_priv->tt_req_list_lock);
+	spin_lock_bh(&bat_priv->tt.req_list_lock);
 
-	list_for_each_entry_safe(node, safe, &bat_priv->tt_req_list, list) {
+	list_for_each_entry_safe(node, safe, &bat_priv->tt.req_list, list) {
 		list_del(&node->list);
 		kfree(node);
 	}
 
-	spin_unlock_bh(&bat_priv->tt_req_list_lock);
+	spin_unlock_bh(&bat_priv->tt.req_list_lock);
 }
 
 static void batadv_tt_save_orig_buffer(struct batadv_priv *bat_priv,
@@ -1304,15 +1376,15 @@ static void batadv_tt_req_purge(struct batadv_priv *bat_priv)
 {
 	struct batadv_tt_req_node *node, *safe;
 
-	spin_lock_bh(&bat_priv->tt_req_list_lock);
-	list_for_each_entry_safe(node, safe, &bat_priv->tt_req_list, list) {
+	spin_lock_bh(&bat_priv->tt.req_list_lock);
+	list_for_each_entry_safe(node, safe, &bat_priv->tt.req_list, list) {
 		if (batadv_has_timed_out(node->issued_at,
 					 BATADV_TT_REQUEST_TIMEOUT)) {
 			list_del(&node->list);
 			kfree(node);
 		}
 	}
-	spin_unlock_bh(&bat_priv->tt_req_list_lock);
+	spin_unlock_bh(&bat_priv->tt.req_list_lock);
 }
 
 /* returns the pointer to the new tt_req_node struct if no request
@@ -1324,8 +1396,8 @@ batadv_new_tt_req_node(struct batadv_priv *bat_priv,
 {
 	struct batadv_tt_req_node *tt_req_node_tmp, *tt_req_node = NULL;
 
-	spin_lock_bh(&bat_priv->tt_req_list_lock);
-	list_for_each_entry(tt_req_node_tmp, &bat_priv->tt_req_list, list) {
+	spin_lock_bh(&bat_priv->tt.req_list_lock);
+	list_for_each_entry(tt_req_node_tmp, &bat_priv->tt.req_list, list) {
 		if (batadv_compare_eth(tt_req_node_tmp, orig_node) &&
 		    !batadv_has_timed_out(tt_req_node_tmp->issued_at,
 					  BATADV_TT_REQUEST_TIMEOUT))
@@ -1339,9 +1411,9 @@ batadv_new_tt_req_node(struct batadv_priv *bat_priv,
 	memcpy(tt_req_node->addr, orig_node->orig, ETH_ALEN);
 	tt_req_node->issued_at = jiffies;
 
-	list_add(&tt_req_node->list, &bat_priv->tt_req_list);
+	list_add(&tt_req_node->list, &bat_priv->tt.req_list);
 unlock:
-	spin_unlock_bh(&bat_priv->tt_req_list_lock);
+	spin_unlock_bh(&bat_priv->tt.req_list_lock);
 	return tt_req_node;
 }
 
@@ -1363,7 +1435,8 @@ static int batadv_tt_global_valid(const void *entry_ptr,
 	const struct batadv_tt_global_entry *tt_global_entry;
 	const struct batadv_orig_node *orig_node = data_ptr;
 
-	if (tt_common_entry->flags & BATADV_TT_CLIENT_ROAM)
+	if (tt_common_entry->flags & BATADV_TT_CLIENT_ROAM ||
+	    tt_common_entry->flags & BATADV_TT_CLIENT_TEMP)
 		return 0;
 
 	tt_global_entry = container_of(tt_common_entry,
@@ -1507,9 +1580,9 @@ out:
 	if (ret)
 		kfree_skb(skb);
 	if (ret && tt_req_node) {
-		spin_lock_bh(&bat_priv->tt_req_list_lock);
+		spin_lock_bh(&bat_priv->tt.req_list_lock);
 		list_del(&tt_req_node->list);
-		spin_unlock_bh(&bat_priv->tt_req_list_lock);
+		spin_unlock_bh(&bat_priv->tt.req_list_lock);
 		kfree(tt_req_node);
 	}
 	return ret;
@@ -1530,6 +1603,7 @@ batadv_send_other_tt_response(struct batadv_priv *bat_priv,
 	uint16_t tt_len, tt_tot;
 	struct sk_buff *skb = NULL;
 	struct batadv_tt_query_packet *tt_response;
+	uint8_t *packet_pos;
 	size_t len;
 
 	batadv_dbg(BATADV_DBG_TT, bat_priv,
@@ -1583,8 +1657,8 @@ batadv_send_other_tt_response(struct batadv_priv *bat_priv,
 			goto unlock;
 
 		skb_reserve(skb, ETH_HLEN);
-		tt_response = (struct batadv_tt_query_packet *)skb_put(skb,
-								       len);
+		packet_pos = skb_put(skb, len);
+		tt_response = (struct batadv_tt_query_packet *)packet_pos;
 		tt_response->ttvn = req_ttvn;
 		tt_response->tt_data = htons(tt_tot);
 
@@ -1600,7 +1674,7 @@ batadv_send_other_tt_response(struct batadv_priv *bat_priv,
 		ttvn = (uint8_t)atomic_read(&req_dst_orig_node->last_ttvn);
 
 		skb = batadv_tt_response_fill_table(tt_len, ttvn,
-						    bat_priv->tt_global_hash,
+						    bat_priv->tt.global_hash,
 						    primary_if,
 						    batadv_tt_global_valid,
 						    req_dst_orig_node);
@@ -1663,6 +1737,7 @@ batadv_send_my_tt_response(struct batadv_priv *bat_priv,
 	uint16_t tt_len, tt_tot;
 	struct sk_buff *skb = NULL;
 	struct batadv_tt_query_packet *tt_response;
+	uint8_t *packet_pos;
 	size_t len;
 
 	batadv_dbg(BATADV_DBG_TT, bat_priv,
@@ -1671,7 +1746,7 @@ batadv_send_my_tt_response(struct batadv_priv *bat_priv,
 		   (tt_request->flags & BATADV_TT_FULL_TABLE ? 'F' : '.'));
 
 
-	my_ttvn = (uint8_t)atomic_read(&bat_priv->ttvn);
+	my_ttvn = (uint8_t)atomic_read(&bat_priv->tt.vn);
 	req_ttvn = tt_request->ttvn;
 
 	orig_node = batadv_orig_hash_find(bat_priv, tt_request->src);
@@ -1690,7 +1765,7 @@ batadv_send_my_tt_response(struct batadv_priv *bat_priv,
 	 * is too big send the whole local translation table
 	 */
 	if (tt_request->flags & BATADV_TT_FULL_TABLE || my_ttvn != req_ttvn ||
-	    !bat_priv->tt_buff)
+	    !bat_priv->tt.last_changeset)
 		full_table = true;
 	else
 		full_table = false;
@@ -1699,8 +1774,8 @@ batadv_send_my_tt_response(struct batadv_priv *bat_priv,
 	 * I'll send only one packet with as much TT entries as I can
 	 */
 	if (!full_table) {
-		spin_lock_bh(&bat_priv->tt_buff_lock);
-		tt_len = bat_priv->tt_buff_len;
+		spin_lock_bh(&bat_priv->tt.last_changeset_lock);
+		tt_len = bat_priv->tt.last_changeset_len;
 		tt_tot = tt_len / sizeof(struct batadv_tt_change);
 
 		len = sizeof(*tt_response) + tt_len;
@@ -1709,22 +1784,22 @@ batadv_send_my_tt_response(struct batadv_priv *bat_priv,
 			goto unlock;
 
 		skb_reserve(skb, ETH_HLEN);
-		tt_response = (struct batadv_tt_query_packet *)skb_put(skb,
-								       len);
+		packet_pos = skb_put(skb, len);
+		tt_response = (struct batadv_tt_query_packet *)packet_pos;
 		tt_response->ttvn = req_ttvn;
 		tt_response->tt_data = htons(tt_tot);
 
 		tt_buff = skb->data + sizeof(*tt_response);
-		memcpy(tt_buff, bat_priv->tt_buff,
-		       bat_priv->tt_buff_len);
-		spin_unlock_bh(&bat_priv->tt_buff_lock);
+		memcpy(tt_buff, bat_priv->tt.last_changeset,
+		       bat_priv->tt.last_changeset_len);
+		spin_unlock_bh(&bat_priv->tt.last_changeset_lock);
 	} else {
-		tt_len = (uint16_t)atomic_read(&bat_priv->num_local_tt);
+		tt_len = (uint16_t)atomic_read(&bat_priv->tt.local_entry_num);
 		tt_len *= sizeof(struct batadv_tt_change);
-		ttvn = (uint8_t)atomic_read(&bat_priv->ttvn);
+		ttvn = (uint8_t)atomic_read(&bat_priv->tt.vn);
 
 		skb = batadv_tt_response_fill_table(tt_len, ttvn,
-						    bat_priv->tt_local_hash,
+						    bat_priv->tt.local_hash,
 						    primary_if,
 						    batadv_tt_local_valid_entry,
 						    NULL);
@@ -1756,7 +1831,7 @@ batadv_send_my_tt_response(struct batadv_priv *bat_priv,
 	goto out;
 
 unlock:
-	spin_unlock_bh(&bat_priv->tt_buff_lock);
+	spin_unlock_bh(&bat_priv->tt.last_changeset_lock);
 out:
 	if (orig_node)
 		batadv_orig_node_free_ref(orig_node);
@@ -1909,14 +1984,14 @@ void batadv_handle_tt_response(struct batadv_priv *bat_priv,
 	}
 
 	/* Delete the tt_req_node from pending tt_requests list */
-	spin_lock_bh(&bat_priv->tt_req_list_lock);
-	list_for_each_entry_safe(node, safe, &bat_priv->tt_req_list, list) {
+	spin_lock_bh(&bat_priv->tt.req_list_lock);
+	list_for_each_entry_safe(node, safe, &bat_priv->tt.req_list, list) {
 		if (!batadv_compare_eth(node->addr, tt_response->src))
 			continue;
 		list_del(&node->list);
 		kfree(node);
 	}
-	spin_unlock_bh(&bat_priv->tt_req_list_lock);
+	spin_unlock_bh(&bat_priv->tt.req_list_lock);
 
 	/* Recalculate the CRC for this orig_node and store it */
 	orig_node->tt_crc = batadv_tt_global_crc(bat_priv, orig_node);
@@ -1950,22 +2025,22 @@ static void batadv_tt_roam_list_free(struct batadv_priv *bat_priv)
 {
 	struct batadv_tt_roam_node *node, *safe;
 
-	spin_lock_bh(&bat_priv->tt_roam_list_lock);
+	spin_lock_bh(&bat_priv->tt.roam_list_lock);
 
-	list_for_each_entry_safe(node, safe, &bat_priv->tt_roam_list, list) {
+	list_for_each_entry_safe(node, safe, &bat_priv->tt.roam_list, list) {
 		list_del(&node->list);
 		kfree(node);
 	}
 
-	spin_unlock_bh(&bat_priv->tt_roam_list_lock);
+	spin_unlock_bh(&bat_priv->tt.roam_list_lock);
 }
 
 static void batadv_tt_roam_purge(struct batadv_priv *bat_priv)
 {
 	struct batadv_tt_roam_node *node, *safe;
 
-	spin_lock_bh(&bat_priv->tt_roam_list_lock);
-	list_for_each_entry_safe(node, safe, &bat_priv->tt_roam_list, list) {
+	spin_lock_bh(&bat_priv->tt.roam_list_lock);
+	list_for_each_entry_safe(node, safe, &bat_priv->tt.roam_list, list) {
 		if (!batadv_has_timed_out(node->first_time,
 					  BATADV_ROAMING_MAX_TIME))
 			continue;
@@ -1973,7 +2048,7 @@ static void batadv_tt_roam_purge(struct batadv_priv *bat_priv)
 		list_del(&node->list);
 		kfree(node);
 	}
-	spin_unlock_bh(&bat_priv->tt_roam_list_lock);
+	spin_unlock_bh(&bat_priv->tt.roam_list_lock);
 }
 
 /* This function checks whether the client already reached the
@@ -1988,11 +2063,11 @@ static bool batadv_tt_check_roam_count(struct batadv_priv *bat_priv,
 	struct batadv_tt_roam_node *tt_roam_node;
 	bool ret = false;
 
-	spin_lock_bh(&bat_priv->tt_roam_list_lock);
+	spin_lock_bh(&bat_priv->tt.roam_list_lock);
 	/* The new tt_req will be issued only if I'm not waiting for a
 	 * reply from the same orig_node yet
 	 */
-	list_for_each_entry(tt_roam_node, &bat_priv->tt_roam_list, list) {
+	list_for_each_entry(tt_roam_node, &bat_priv->tt.roam_list, list) {
 		if (!batadv_compare_eth(tt_roam_node->addr, client))
 			continue;
 
@@ -2017,12 +2092,12 @@ static bool batadv_tt_check_roam_count(struct batadv_priv *bat_priv,
 			   BATADV_ROAMING_MAX_COUNT - 1);
 		memcpy(tt_roam_node->addr, client, ETH_ALEN);
 
-		list_add(&tt_roam_node->list, &bat_priv->tt_roam_list);
+		list_add(&tt_roam_node->list, &bat_priv->tt.roam_list);
 		ret = true;
 	}
 
 unlock:
-	spin_unlock_bh(&bat_priv->tt_roam_list_lock);
+	spin_unlock_bh(&bat_priv->tt.roam_list_lock);
 	return ret;
 }
 
@@ -2086,13 +2161,15 @@ out:
 static void batadv_tt_purge(struct work_struct *work)
 {
 	struct delayed_work *delayed_work;
+	struct batadv_priv_tt *priv_tt;
 	struct batadv_priv *bat_priv;
 
 	delayed_work = container_of(work, struct delayed_work, work);
-	bat_priv = container_of(delayed_work, struct batadv_priv, tt_work);
+	priv_tt = container_of(delayed_work, struct batadv_priv_tt, work);
+	bat_priv = container_of(priv_tt, struct batadv_priv, tt);
 
 	batadv_tt_local_purge(bat_priv);
-	batadv_tt_global_roam_purge(bat_priv);
+	batadv_tt_global_purge(bat_priv);
 	batadv_tt_req_purge(bat_priv);
 	batadv_tt_roam_purge(bat_priv);
 
@@ -2101,7 +2178,7 @@ static void batadv_tt_purge(struct work_struct *work)
 
 void batadv_tt_free(struct batadv_priv *bat_priv)
 {
-	cancel_delayed_work_sync(&bat_priv->tt_work);
+	cancel_delayed_work_sync(&bat_priv->tt.work);
 
 	batadv_tt_local_table_free(bat_priv);
 	batadv_tt_global_table_free(bat_priv);
@@ -2109,7 +2186,7 @@ void batadv_tt_free(struct batadv_priv *bat_priv)
 	batadv_tt_changes_list_free(bat_priv);
 	batadv_tt_roam_list_free(bat_priv);
 
-	kfree(bat_priv->tt_buff);
+	kfree(bat_priv->tt.last_changeset);
 }
 
 /* This function will enable or disable the specified flags for all the entries
@@ -2153,7 +2230,7 @@ out:
 /* Purge out all the tt local entries marked with BATADV_TT_CLIENT_PENDING */
 static void batadv_tt_local_purge_pending_clients(struct batadv_priv *bat_priv)
 {
-	struct batadv_hashtable *hash = bat_priv->tt_local_hash;
+	struct batadv_hashtable *hash = bat_priv->tt.local_hash;
 	struct batadv_tt_common_entry *tt_common;
 	struct batadv_tt_local_entry *tt_local;
 	struct hlist_node *node, *node_tmp;
@@ -2178,7 +2255,7 @@ static void batadv_tt_local_purge_pending_clients(struct batadv_priv *bat_priv)
 				   "Deleting local tt entry (%pM): pending\n",
 				   tt_common->addr);
 
-			atomic_dec(&bat_priv->num_local_tt);
+			atomic_dec(&bat_priv->tt.local_entry_num);
 			hlist_del_rcu(node);
 			tt_local = container_of(tt_common,
 						struct batadv_tt_local_entry,
@@ -2196,26 +2273,26 @@ static int batadv_tt_commit_changes(struct batadv_priv *bat_priv,
 {
 	uint16_t changed_num = 0;
 
-	if (atomic_read(&bat_priv->tt_local_changes) < 1)
+	if (atomic_read(&bat_priv->tt.local_changes) < 1)
 		return -ENOENT;
 
-	changed_num = batadv_tt_set_flags(bat_priv->tt_local_hash,
+	changed_num = batadv_tt_set_flags(bat_priv->tt.local_hash,
 					  BATADV_TT_CLIENT_NEW, false);
 
 	/* all reset entries have to be counted as local entries */
-	atomic_add(changed_num, &bat_priv->num_local_tt);
+	atomic_add(changed_num, &bat_priv->tt.local_entry_num);
 	batadv_tt_local_purge_pending_clients(bat_priv);
-	bat_priv->tt_crc = batadv_tt_local_crc(bat_priv);
+	bat_priv->tt.local_crc = batadv_tt_local_crc(bat_priv);
 
 	/* Increment the TTVN only once per OGM interval */
-	atomic_inc(&bat_priv->ttvn);
+	atomic_inc(&bat_priv->tt.vn);
 	batadv_dbg(BATADV_DBG_TT, bat_priv,
 		   "Local changes committed, updating to ttvn %u\n",
-		   (uint8_t)atomic_read(&bat_priv->ttvn));
-	bat_priv->tt_poss_change = false;
+		   (uint8_t)atomic_read(&bat_priv->tt.vn));
+	bat_priv->tt.poss_change = false;
 
 	/* reset the sending counter */
-	atomic_set(&bat_priv->tt_ogm_append_cnt, BATADV_TT_OGM_APPEND_MAX);
+	atomic_set(&bat_priv->tt.ogm_append_cnt, BATADV_TT_OGM_APPEND_MAX);
 
 	return batadv_tt_changes_fill_buff(bat_priv, packet_buff,
 					   packet_buff_len, packet_min_len);
@@ -2235,7 +2312,7 @@ int batadv_tt_append_diff(struct batadv_priv *bat_priv,
 
 	/* if the changes have been sent often enough */
 	if ((tt_num_changes < 0) &&
-	    (!batadv_atomic_dec_not_zero(&bat_priv->tt_ogm_append_cnt))) {
+	    (!batadv_atomic_dec_not_zero(&bat_priv->tt.ogm_append_cnt))) {
 		batadv_tt_realloc_packet_buff(packet_buff, packet_buff_len,
 					      packet_min_len, packet_min_len);
 		tt_num_changes = 0;
@@ -2366,3 +2443,22 @@ bool batadv_tt_global_client_is_roaming(struct batadv_priv *bat_priv,
 out:
 	return ret;
 }
+
+bool batadv_tt_add_temporary_global_entry(struct batadv_priv *bat_priv,
+					  struct batadv_orig_node *orig_node,
+					  const unsigned char *addr)
+{
+	bool ret = false;
+
+	if (!batadv_tt_global_add(bat_priv, orig_node, addr,
+				  BATADV_TT_CLIENT_TEMP,
+				  atomic_read(&orig_node->last_ttvn)))
+		goto out;
+
+	batadv_dbg(BATADV_DBG_TT, bat_priv,
+		   "Added temporary global client (addr: %pM orig: %pM)\n",
+		   addr, orig_node->orig);
+	ret = true;
+out:
+	return ret;
+}
diff --git a/net/batman-adv/translation-table.h b/net/batman-adv/translation-table.h
index ffa87355096b..811fffd4760c 100644
--- a/net/batman-adv/translation-table.h
+++ b/net/batman-adv/translation-table.h
@@ -59,6 +59,8 @@ int batadv_tt_append_diff(struct batadv_priv *bat_priv,
 			  int packet_min_len);
 bool batadv_tt_global_client_is_roaming(struct batadv_priv *bat_priv,
 					uint8_t *addr);
-
+bool batadv_tt_add_temporary_global_entry(struct batadv_priv *bat_priv,
+					  struct batadv_orig_node *orig_node,
+					  const unsigned char *addr);
 
 #endif /* _NET_BATMAN_ADV_TRANSLATION_TABLE_H_ */
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
index 12635fd2c3d3..2ed82caacdca 100644
--- a/net/batman-adv/types.h
+++ b/net/batman-adv/types.h
@@ -145,6 +145,11 @@ struct batadv_bcast_duplist_entry {
 #endif
 
 enum batadv_counters {
+	BATADV_CNT_TX,
+	BATADV_CNT_TX_BYTES,
+	BATADV_CNT_TX_DROPPED,
+	BATADV_CNT_RX,
+	BATADV_CNT_RX_BYTES,
 	BATADV_CNT_FORWARD,
 	BATADV_CNT_FORWARD_BYTES,
 	BATADV_CNT_MGMT_TX,
@@ -160,6 +165,67 @@ enum batadv_counters {
 	BATADV_CNT_NUM,
 };
 
+/**
+ * struct batadv_priv_tt - per mesh interface translation table data
+ * @vn: translation table version number
+ * @local_changes: changes registered in an originator interval
+ * @poss_change: Detect an ongoing roaming phase. If true, then this node
+ *  received a roaming_adv and has to inspect every packet directed to it to
+ *  check whether it still is the true destination or not. This flag will be
+ *  reset to false as soon as the this node's ttvn is increased
+ * @changes_list: tracks tt local changes within an originator interval
+ * @req_list: list of pending tt_requests
+ * @local_crc: Checksum of the local table, recomputed before sending a new OGM
+ */
+struct batadv_priv_tt {
+	atomic_t vn;
+	atomic_t ogm_append_cnt;
+	atomic_t local_changes;
+	bool poss_change;
+	struct list_head changes_list;
+	struct batadv_hashtable *local_hash;
+	struct batadv_hashtable *global_hash;
+	struct list_head req_list;
+	struct list_head roam_list;
+	spinlock_t changes_list_lock; /* protects changes */
+	spinlock_t req_list_lock; /* protects req_list */
+	spinlock_t roam_list_lock; /* protects roam_list */
+	atomic_t local_entry_num;
+	uint16_t local_crc;
+	unsigned char *last_changeset;
+	int16_t last_changeset_len;
+	spinlock_t last_changeset_lock; /* protects last_changeset */
+	struct delayed_work work;
+};
+
+#ifdef CONFIG_BATMAN_ADV_BLA
+struct batadv_priv_bla {
+	atomic_t num_requests; /* number of bla requests in flight */
+	struct batadv_hashtable *claim_hash;
+	struct batadv_hashtable *backbone_hash;
+	struct batadv_bcast_duplist_entry bcast_duplist[BATADV_DUPLIST_SIZE];
+	int bcast_duplist_curr;
+	struct batadv_bla_claim_dst claim_dest;
+	struct delayed_work work;
+};
+#endif
+
+struct batadv_priv_gw {
+	struct hlist_head list;
+	spinlock_t list_lock; /* protects gw_list and curr_gw */
+	struct batadv_gw_node __rcu *curr_gw;  /* rcu protected pointer */
+	atomic_t reselect;
+};
+
+struct batadv_priv_vis {
+	struct list_head send_list;
+	struct batadv_hashtable *hash;
+	spinlock_t hash_lock; /* protects hash */
+	spinlock_t list_lock; /* protects info::recv_list */
+	struct delayed_work work;
+	struct batadv_vis_info *my_info;
+};
+
 struct batadv_priv {
 	atomic_t mesh_state;
 	struct net_device_stats stats;
@@ -179,64 +245,24 @@ struct batadv_priv {
 	atomic_t bcast_seqno;
 	atomic_t bcast_queue_left;
 	atomic_t batman_queue_left;
-	atomic_t ttvn; /* translation table version number */
-	atomic_t tt_ogm_append_cnt;
-	atomic_t tt_local_changes; /* changes registered in a OGM interval */
-	atomic_t bla_num_requests; /* number of bla requests in flight */
-	/* The tt_poss_change flag is used to detect an ongoing roaming phase.
-	 * If true, then I received a Roaming_adv and I have to inspect every
-	 * packet directed to me to check whether I am still the true
-	 * destination or not. This flag will be reset to false as soon as I
-	 * increase my TTVN
-	 */
-	bool tt_poss_change;
 	char num_ifaces;
 	struct batadv_debug_log *debug_log;
 	struct kobject *mesh_obj;
 	struct dentry *debug_dir;
 	struct hlist_head forw_bat_list;
 	struct hlist_head forw_bcast_list;
-	struct hlist_head gw_list;
-	struct list_head tt_changes_list; /* tracks changes in a OGM int */
-	struct list_head vis_send_list;
 	struct batadv_hashtable *orig_hash;
-	struct batadv_hashtable *tt_local_hash;
-	struct batadv_hashtable *tt_global_hash;
-#ifdef CONFIG_BATMAN_ADV_BLA
-	struct batadv_hashtable *claim_hash;
-	struct batadv_hashtable *backbone_hash;
-#endif
-	struct list_head tt_req_list; /* list of pending tt_requests */
-	struct list_head tt_roam_list;
-	struct batadv_hashtable *vis_hash;
-#ifdef CONFIG_BATMAN_ADV_BLA
-	struct batadv_bcast_duplist_entry bcast_duplist[BATADV_DUPLIST_SIZE];
-	int bcast_duplist_curr;
-	struct batadv_bla_claim_dst claim_dest;
-#endif
 	spinlock_t forw_bat_list_lock; /* protects forw_bat_list */
 	spinlock_t forw_bcast_list_lock; /* protects  */
-	spinlock_t tt_changes_list_lock; /* protects tt_changes */
-	spinlock_t tt_req_list_lock; /* protects tt_req_list */
-	spinlock_t tt_roam_list_lock; /* protects tt_roam_list */
-	spinlock_t gw_list_lock; /* protects gw_list and curr_gw */
-	spinlock_t vis_hash_lock; /* protects vis_hash */
-	spinlock_t vis_list_lock; /* protects vis_info::recv_list */
-	atomic_t num_local_tt;
-	/* Checksum of the local table, recomputed before sending a new OGM */
-	uint16_t tt_crc;
-	unsigned char *tt_buff;
-	int16_t tt_buff_len;
-	spinlock_t tt_buff_lock; /* protects tt_buff */
-	struct delayed_work tt_work;
 	struct delayed_work orig_work;
-	struct delayed_work vis_work;
-	struct delayed_work bla_work;
-	struct batadv_gw_node __rcu *curr_gw;  /* rcu protected pointer */
-	atomic_t gw_reselect;
 	struct batadv_hard_iface __rcu *primary_if;  /* rcu protected pointer */
-	struct batadv_vis_info *my_vis_info;
 	struct batadv_algo_ops *bat_algo_ops;
+#ifdef CONFIG_BATMAN_ADV_BLA
+	struct batadv_priv_bla bla;
+#endif
+	struct batadv_priv_gw gw;
+	struct batadv_priv_tt tt;
+	struct batadv_priv_vis vis;
 };
 
 struct batadv_socket_client {
@@ -258,6 +284,7 @@ struct batadv_tt_common_entry {
 	uint8_t addr[ETH_ALEN];
 	struct hlist_node hash_entry;
 	uint16_t flags;
+	unsigned long added_at;
 	atomic_t refcount;
 	struct rcu_head rcu;
 };
@@ -277,6 +304,7 @@ struct batadv_tt_global_entry {
 struct batadv_tt_orig_list_entry {
 	struct batadv_orig_node *orig_node;
 	uint8_t ttvn;
+	atomic_t refcount;
 	struct rcu_head rcu;
 	struct hlist_node list;
 };
diff --git a/net/batman-adv/unicast.c b/net/batman-adv/unicast.c
index 00164645b3f7..f39723281ca1 100644
--- a/net/batman-adv/unicast.c
+++ b/net/batman-adv/unicast.c
@@ -39,6 +39,7 @@ batadv_frag_merge_packet(struct list_head *head,
 	struct batadv_unicast_packet *unicast_packet;
 	int hdr_len = sizeof(*unicast_packet);
 	int uni_diff = sizeof(*up) - hdr_len;
+	uint8_t *packet_pos;
 
 	up = (struct batadv_unicast_frag_packet *)skb->data;
 	/* set skb to the first part and tmp_skb to the second part */
@@ -65,8 +66,8 @@ batadv_frag_merge_packet(struct list_head *head,
 	kfree_skb(tmp_skb);
 
 	memmove(skb->data + uni_diff, skb->data, hdr_len);
-	unicast_packet = (struct batadv_unicast_packet *)skb_pull(skb,
-								  uni_diff);
+	packet_pos = skb_pull(skb, uni_diff);
+	unicast_packet = (struct batadv_unicast_packet *)packet_pos;
 	unicast_packet->header.packet_type = BATADV_UNICAST;
 
 	return skb;
@@ -121,6 +122,7 @@ batadv_frag_search_packet(struct list_head *head,
 {
 	struct batadv_frag_packet_list_entry *tfp;
 	struct batadv_unicast_frag_packet *tmp_up = NULL;
+	int is_head_tmp, is_head;
 	uint16_t search_seqno;
 
 	if (up->flags & BATADV_UNI_FRAG_HEAD)
@@ -128,6 +130,8 @@ batadv_frag_search_packet(struct list_head *head,
 	else
 		search_seqno = ntohs(up->seqno)-1;
 
+	is_head = !!(up->flags & BATADV_UNI_FRAG_HEAD);
+
 	list_for_each_entry(tfp, head, list) {
 
 		if (!tfp->skb)
@@ -139,9 +143,8 @@ batadv_frag_search_packet(struct list_head *head,
 		tmp_up = (struct batadv_unicast_frag_packet *)tfp->skb->data;
 
 		if (tfp->seqno == search_seqno) {
-
-			if ((tmp_up->flags & BATADV_UNI_FRAG_HEAD) !=
-			    (up->flags & BATADV_UNI_FRAG_HEAD))
+			is_head_tmp = !!(tmp_up->flags & BATADV_UNI_FRAG_HEAD);
+			if (is_head_tmp != is_head)
 				return tfp;
 			else
 				goto mov_tail;
@@ -334,8 +337,7 @@ find_router:
 	/* copy the destination for faster routing */
 	memcpy(unicast_packet->dest, orig_node->orig, ETH_ALEN);
 	/* set the destination tt version number */
-	unicast_packet->ttvn =
-		(uint8_t)atomic_read(&orig_node->last_ttvn);
+	unicast_packet->ttvn = (uint8_t)atomic_read(&orig_node->last_ttvn);
 
 	/* inform the destination node that we are still missing a correct route
 	 * for this client. The destination will receive this packet and will
diff --git a/net/batman-adv/vis.c b/net/batman-adv/vis.c
index 2a2ea0681469..5abd1454fb07 100644
--- a/net/batman-adv/vis.c
+++ b/net/batman-adv/vis.c
@@ -41,13 +41,13 @@ static void batadv_free_info(struct kref *ref)
 	bat_priv = info->bat_priv;
 
 	list_del_init(&info->send_list);
-	spin_lock_bh(&bat_priv->vis_list_lock);
+	spin_lock_bh(&bat_priv->vis.list_lock);
 	list_for_each_entry_safe(entry, tmp, &info->recv_list, list) {
 		list_del(&entry->list);
 		kfree(entry);
 	}
 
-	spin_unlock_bh(&bat_priv->vis_list_lock);
+	spin_unlock_bh(&bat_priv->vis.list_lock);
 	kfree_skb(info->skb_packet);
 	kfree(info);
 }
@@ -94,7 +94,7 @@ static uint32_t batadv_vis_info_choose(const void *data, uint32_t size)
 static struct batadv_vis_info *
 batadv_vis_hash_find(struct batadv_priv *bat_priv, const void *data)
 {
-	struct batadv_hashtable *hash = bat_priv->vis_hash;
+	struct batadv_hashtable *hash = bat_priv->vis.hash;
 	struct hlist_head *head;
 	struct hlist_node *node;
 	struct batadv_vis_info *vis_info, *vis_info_tmp = NULL;
@@ -252,7 +252,7 @@ int batadv_vis_seq_print_text(struct seq_file *seq, void *offset)
 	struct hlist_head *head;
 	struct net_device *net_dev = (struct net_device *)seq->private;
 	struct batadv_priv *bat_priv = netdev_priv(net_dev);
-	struct batadv_hashtable *hash = bat_priv->vis_hash;
+	struct batadv_hashtable *hash = bat_priv->vis.hash;
 	uint32_t i;
 	int ret = 0;
 	int vis_server = atomic_read(&bat_priv->vis_mode);
@@ -264,12 +264,12 @@ int batadv_vis_seq_print_text(struct seq_file *seq, void *offset)
 	if (vis_server == BATADV_VIS_TYPE_CLIENT_UPDATE)
 		goto out;
 
-	spin_lock_bh(&bat_priv->vis_hash_lock);
+	spin_lock_bh(&bat_priv->vis.hash_lock);
 	for (i = 0; i < hash->size; i++) {
 		head = &hash->table[i];
 		batadv_vis_seq_print_text_bucket(seq, head);
 	}
-	spin_unlock_bh(&bat_priv->vis_hash_lock);
+	spin_unlock_bh(&bat_priv->vis.hash_lock);
 
 out:
 	if (primary_if)
@@ -285,7 +285,7 @@ static void batadv_send_list_add(struct batadv_priv *bat_priv,
 {
 	if (list_empty(&info->send_list)) {
 		kref_get(&info->refcount);
-		list_add_tail(&info->send_list, &bat_priv->vis_send_list);
+		list_add_tail(&info->send_list, &bat_priv->vis.send_list);
 	}
 }
 
@@ -311,9 +311,9 @@ static void batadv_recv_list_add(struct batadv_priv *bat_priv,
 		return;
 
 	memcpy(entry->mac, mac, ETH_ALEN);
-	spin_lock_bh(&bat_priv->vis_list_lock);
+	spin_lock_bh(&bat_priv->vis.list_lock);
 	list_add_tail(&entry->list, recv_list);
-	spin_unlock_bh(&bat_priv->vis_list_lock);
+	spin_unlock_bh(&bat_priv->vis.list_lock);
 }
 
 /* returns 1 if this mac is in the recv_list */
@@ -323,14 +323,14 @@ static int batadv_recv_list_is_in(struct batadv_priv *bat_priv,
 {
 	const struct batadv_recvlist_node *entry;
 
-	spin_lock_bh(&bat_priv->vis_list_lock);
+	spin_lock_bh(&bat_priv->vis.list_lock);
 	list_for_each_entry(entry, recv_list, list) {
 		if (batadv_compare_eth(entry->mac, mac)) {
-			spin_unlock_bh(&bat_priv->vis_list_lock);
+			spin_unlock_bh(&bat_priv->vis.list_lock);
 			return 1;
 		}
 	}
-	spin_unlock_bh(&bat_priv->vis_list_lock);
+	spin_unlock_bh(&bat_priv->vis.list_lock);
 	return 0;
 }
 
@@ -354,7 +354,7 @@ batadv_add_packet(struct batadv_priv *bat_priv,
 
 	*is_new = 0;
 	/* sanity check */
-	if (!bat_priv->vis_hash)
+	if (!bat_priv->vis.hash)
 		return NULL;
 
 	/* see if the packet is already in vis_hash */
@@ -385,7 +385,7 @@ batadv_add_packet(struct batadv_priv *bat_priv,
 			}
 		}
 		/* remove old entry */
-		batadv_hash_remove(bat_priv->vis_hash, batadv_vis_info_cmp,
+		batadv_hash_remove(bat_priv->vis.hash, batadv_vis_info_cmp,
 				   batadv_vis_info_choose, old_info);
 		batadv_send_list_del(old_info);
 		kref_put(&old_info->refcount, batadv_free_info);
@@ -426,7 +426,7 @@ batadv_add_packet(struct batadv_priv *bat_priv,
 	batadv_recv_list_add(bat_priv, &info->recv_list, packet->sender_orig);
 
 	/* try to add it */
-	hash_added = batadv_hash_add(bat_priv->vis_hash, batadv_vis_info_cmp,
+	hash_added = batadv_hash_add(bat_priv->vis.hash, batadv_vis_info_cmp,
 				     batadv_vis_info_choose, info,
 				     &info->hash_entry);
 	if (hash_added != 0) {
@@ -449,7 +449,7 @@ void batadv_receive_server_sync_packet(struct batadv_priv *bat_priv,
 
 	make_broadcast = (vis_server == BATADV_VIS_TYPE_SERVER_SYNC);
 
-	spin_lock_bh(&bat_priv->vis_hash_lock);
+	spin_lock_bh(&bat_priv->vis.hash_lock);
 	info = batadv_add_packet(bat_priv, vis_packet, vis_info_len,
 				 &is_new, make_broadcast);
 	if (!info)
@@ -461,7 +461,7 @@ void batadv_receive_server_sync_packet(struct batadv_priv *bat_priv,
 	if (vis_server == BATADV_VIS_TYPE_SERVER_SYNC && is_new)
 		batadv_send_list_add(bat_priv, info);
 end:
-	spin_unlock_bh(&bat_priv->vis_hash_lock);
+	spin_unlock_bh(&bat_priv->vis.hash_lock);
 }
 
 /* handle an incoming client update packet and schedule forward if needed. */
@@ -484,7 +484,7 @@ void batadv_receive_client_update_packet(struct batadv_priv *bat_priv,
 	    batadv_is_my_mac(vis_packet->target_orig))
 		are_target = 1;
 
-	spin_lock_bh(&bat_priv->vis_hash_lock);
+	spin_lock_bh(&bat_priv->vis.hash_lock);
 	info = batadv_add_packet(bat_priv, vis_packet, vis_info_len,
 				 &is_new, are_target);
 
@@ -505,7 +505,7 @@ void batadv_receive_client_update_packet(struct batadv_priv *bat_priv,
 	}
 
 end:
-	spin_unlock_bh(&bat_priv->vis_hash_lock);
+	spin_unlock_bh(&bat_priv->vis.hash_lock);
 }
 
 /* Walk the originators and find the VIS server with the best tq. Set the packet
@@ -574,10 +574,11 @@ static int batadv_generate_vis_packet(struct batadv_priv *bat_priv)
 	struct hlist_head *head;
 	struct batadv_orig_node *orig_node;
 	struct batadv_neigh_node *router;
-	struct batadv_vis_info *info = bat_priv->my_vis_info;
+	struct batadv_vis_info *info = bat_priv->vis.my_info;
 	struct batadv_vis_packet *packet;
 	struct batadv_vis_info_entry *entry;
 	struct batadv_tt_common_entry *tt_common_entry;
+	uint8_t *packet_pos;
 	int best_tq = -1;
 	uint32_t i;
 
@@ -618,8 +619,8 @@ static int batadv_generate_vis_packet(struct batadv_priv *bat_priv)
 				goto next;
 
 			/* fill one entry into buffer. */
-			entry = (struct batadv_vis_info_entry *)
-				      skb_put(info->skb_packet, sizeof(*entry));
+			packet_pos = skb_put(info->skb_packet, sizeof(*entry));
+			entry = (struct batadv_vis_info_entry *)packet_pos;
 			memcpy(entry->src,
 			       router->if_incoming->net_dev->dev_addr,
 			       ETH_ALEN);
@@ -636,7 +637,7 @@ next:
 		rcu_read_unlock();
 	}
 
-	hash = bat_priv->tt_local_hash;
+	hash = bat_priv->tt.local_hash;
 
 	for (i = 0; i < hash->size; i++) {
 		head = &hash->table[i];
@@ -644,9 +645,8 @@ next:
 		rcu_read_lock();
 		hlist_for_each_entry_rcu(tt_common_entry, node, head,
 					 hash_entry) {
-			entry = (struct batadv_vis_info_entry *)
-					skb_put(info->skb_packet,
-						sizeof(*entry));
+			packet_pos = skb_put(info->skb_packet, sizeof(*entry));
+			entry = (struct batadv_vis_info_entry *)packet_pos;
 			memset(entry->src, 0, ETH_ALEN);
 			memcpy(entry->dest, tt_common_entry->addr, ETH_ALEN);
 			entry->quality = 0; /* 0 means TT */
@@ -671,7 +671,7 @@ unlock:
 static void batadv_purge_vis_packets(struct batadv_priv *bat_priv)
 {
 	uint32_t i;
-	struct batadv_hashtable *hash = bat_priv->vis_hash;
+	struct batadv_hashtable *hash = bat_priv->vis.hash;
 	struct hlist_node *node, *node_tmp;
 	struct hlist_head *head;
 	struct batadv_vis_info *info;
@@ -682,7 +682,7 @@ static void batadv_purge_vis_packets(struct batadv_priv *bat_priv)
 		hlist_for_each_entry_safe(info, node, node_tmp,
 					  head, hash_entry) {
 			/* never purge own data. */
-			if (info == bat_priv->my_vis_info)
+			if (info == bat_priv->vis.my_info)
 				continue;
 
 			if (batadv_has_timed_out(info->first_seen,
@@ -814,34 +814,36 @@ out:
 /* called from timer; send (and maybe generate) vis packet. */
 static void batadv_send_vis_packets(struct work_struct *work)
 {
-	struct delayed_work *delayed_work =
-		container_of(work, struct delayed_work, work);
+	struct delayed_work *delayed_work;
 	struct batadv_priv *bat_priv;
+	struct batadv_priv_vis *priv_vis;
 	struct batadv_vis_info *info;
 
-	bat_priv = container_of(delayed_work, struct batadv_priv, vis_work);
-	spin_lock_bh(&bat_priv->vis_hash_lock);
+	delayed_work = container_of(work, struct delayed_work, work);
+	priv_vis = container_of(delayed_work, struct batadv_priv_vis, work);
+	bat_priv = container_of(priv_vis, struct batadv_priv, vis);
+	spin_lock_bh(&bat_priv->vis.hash_lock);
 	batadv_purge_vis_packets(bat_priv);
 
 	if (batadv_generate_vis_packet(bat_priv) == 0) {
 		/* schedule if generation was successful */
-		batadv_send_list_add(bat_priv, bat_priv->my_vis_info);
+		batadv_send_list_add(bat_priv, bat_priv->vis.my_info);
 	}
 
-	while (!list_empty(&bat_priv->vis_send_list)) {
-		info = list_first_entry(&bat_priv->vis_send_list,
+	while (!list_empty(&bat_priv->vis.send_list)) {
+		info = list_first_entry(&bat_priv->vis.send_list,
 					typeof(*info), send_list);
 
 		kref_get(&info->refcount);
-		spin_unlock_bh(&bat_priv->vis_hash_lock);
+		spin_unlock_bh(&bat_priv->vis.hash_lock);
 
 		batadv_send_vis_packet(bat_priv, info);
 
-		spin_lock_bh(&bat_priv->vis_hash_lock);
+		spin_lock_bh(&bat_priv->vis.hash_lock);
 		batadv_send_list_del(info);
 		kref_put(&info->refcount, batadv_free_info);
 	}
-	spin_unlock_bh(&bat_priv->vis_hash_lock);
+	spin_unlock_bh(&bat_priv->vis.hash_lock);
 	batadv_start_vis_timer(bat_priv);
 }
 
@@ -856,37 +858,37 @@ int batadv_vis_init(struct batadv_priv *bat_priv)
 	unsigned long first_seen;
 	struct sk_buff *tmp_skb;
 
-	if (bat_priv->vis_hash)
+	if (bat_priv->vis.hash)
 		return 0;
 
-	spin_lock_bh(&bat_priv->vis_hash_lock);
+	spin_lock_bh(&bat_priv->vis.hash_lock);
 
-	bat_priv->vis_hash = batadv_hash_new(256);
-	if (!bat_priv->vis_hash) {
+	bat_priv->vis.hash = batadv_hash_new(256);
+	if (!bat_priv->vis.hash) {
 		pr_err("Can't initialize vis_hash\n");
 		goto err;
 	}
 
-	bat_priv->my_vis_info = kmalloc(BATADV_MAX_VIS_PACKET_SIZE, GFP_ATOMIC);
-	if (!bat_priv->my_vis_info)
+	bat_priv->vis.my_info = kmalloc(BATADV_MAX_VIS_PACKET_SIZE, GFP_ATOMIC);
+	if (!bat_priv->vis.my_info)
 		goto err;
 
 	len = sizeof(*packet) + BATADV_MAX_VIS_PACKET_SIZE + ETH_HLEN;
-	bat_priv->my_vis_info->skb_packet = dev_alloc_skb(len);
-	if (!bat_priv->my_vis_info->skb_packet)
+	bat_priv->vis.my_info->skb_packet = dev_alloc_skb(len);
+	if (!bat_priv->vis.my_info->skb_packet)
 		goto free_info;
 
-	skb_reserve(bat_priv->my_vis_info->skb_packet, ETH_HLEN);
-	tmp_skb = bat_priv->my_vis_info->skb_packet;
+	skb_reserve(bat_priv->vis.my_info->skb_packet, ETH_HLEN);
+	tmp_skb = bat_priv->vis.my_info->skb_packet;
 	packet = (struct batadv_vis_packet *)skb_put(tmp_skb, sizeof(*packet));
 
 	/* prefill the vis info */
 	first_seen = jiffies - msecs_to_jiffies(BATADV_VIS_INTERVAL);
-	bat_priv->my_vis_info->first_seen = first_seen;
-	INIT_LIST_HEAD(&bat_priv->my_vis_info->recv_list);
-	INIT_LIST_HEAD(&bat_priv->my_vis_info->send_list);
-	kref_init(&bat_priv->my_vis_info->refcount);
-	bat_priv->my_vis_info->bat_priv = bat_priv;
+	bat_priv->vis.my_info->first_seen = first_seen;
+	INIT_LIST_HEAD(&bat_priv->vis.my_info->recv_list);
+	INIT_LIST_HEAD(&bat_priv->vis.my_info->send_list);
+	kref_init(&bat_priv->vis.my_info->refcount);
+	bat_priv->vis.my_info->bat_priv = bat_priv;
 	packet->header.version = BATADV_COMPAT_VERSION;
 	packet->header.packet_type = BATADV_VIS;
 	packet->header.ttl = BATADV_TTL;
@@ -894,28 +896,28 @@ int batadv_vis_init(struct batadv_priv *bat_priv)
 	packet->reserved = 0;
 	packet->entries = 0;
 
-	INIT_LIST_HEAD(&bat_priv->vis_send_list);
+	INIT_LIST_HEAD(&bat_priv->vis.send_list);
 
-	hash_added = batadv_hash_add(bat_priv->vis_hash, batadv_vis_info_cmp,
+	hash_added = batadv_hash_add(bat_priv->vis.hash, batadv_vis_info_cmp,
 				     batadv_vis_info_choose,
-				     bat_priv->my_vis_info,
-				     &bat_priv->my_vis_info->hash_entry);
+				     bat_priv->vis.my_info,
+				     &bat_priv->vis.my_info->hash_entry);
 	if (hash_added != 0) {
 		pr_err("Can't add own vis packet into hash\n");
 		/* not in hash, need to remove it manually. */
-		kref_put(&bat_priv->my_vis_info->refcount, batadv_free_info);
+		kref_put(&bat_priv->vis.my_info->refcount, batadv_free_info);
 		goto err;
 	}
 
-	spin_unlock_bh(&bat_priv->vis_hash_lock);
+	spin_unlock_bh(&bat_priv->vis.hash_lock);
 	batadv_start_vis_timer(bat_priv);
 	return 0;
 
 free_info:
-	kfree(bat_priv->my_vis_info);
-	bat_priv->my_vis_info = NULL;
+	kfree(bat_priv->vis.my_info);
+	bat_priv->vis.my_info = NULL;
 err:
-	spin_unlock_bh(&bat_priv->vis_hash_lock);
+	spin_unlock_bh(&bat_priv->vis.hash_lock);
 	batadv_vis_quit(bat_priv);
 	return -ENOMEM;
 }
@@ -933,23 +935,23 @@ static void batadv_free_info_ref(struct hlist_node *node, void *arg)
 /* shutdown vis-server */
 void batadv_vis_quit(struct batadv_priv *bat_priv)
 {
-	if (!bat_priv->vis_hash)
+	if (!bat_priv->vis.hash)
 		return;
 
-	cancel_delayed_work_sync(&bat_priv->vis_work);
+	cancel_delayed_work_sync(&bat_priv->vis.work);
 
-	spin_lock_bh(&bat_priv->vis_hash_lock);
+	spin_lock_bh(&bat_priv->vis.hash_lock);
 	/* properly remove, kill timers ... */
-	batadv_hash_delete(bat_priv->vis_hash, batadv_free_info_ref, NULL);
-	bat_priv->vis_hash = NULL;
-	bat_priv->my_vis_info = NULL;
-	spin_unlock_bh(&bat_priv->vis_hash_lock);
+	batadv_hash_delete(bat_priv->vis.hash, batadv_free_info_ref, NULL);
+	bat_priv->vis.hash = NULL;
+	bat_priv->vis.my_info = NULL;
+	spin_unlock_bh(&bat_priv->vis.hash_lock);
 }
 
 /* schedule packets for (re)transmission */
 static void batadv_start_vis_timer(struct batadv_priv *bat_priv)
 {
-	INIT_DELAYED_WORK(&bat_priv->vis_work, batadv_send_vis_packets);
-	queue_delayed_work(batadv_event_workqueue, &bat_priv->vis_work,
+	INIT_DELAYED_WORK(&bat_priv->vis.work, batadv_send_vis_packets);
+	queue_delayed_work(batadv_event_workqueue, &bat_priv->vis.work,
 			   msecs_to_jiffies(BATADV_VIS_INTERVAL));
 }
diff --git a/net/batman-adv/vis.h b/net/batman-adv/vis.h
index 84e716ed8963..873282fa86da 100644
--- a/net/batman-adv/vis.h
+++ b/net/batman-adv/vis.h
@@ -20,7 +20,7 @@
 #ifndef _NET_BATMAN_ADV_VIS_H_
 #define _NET_BATMAN_ADV_VIS_H_
 
-/* timeout of vis packets in miliseconds */
+/* timeout of vis packets in milliseconds */
 #define BATADV_VIS_TIMEOUT		200000
 
 int batadv_vis_seq_print_text(struct seq_file *seq, void *offset);
diff --git a/net/ceph/ceph_common.c b/net/ceph/ceph_common.c
index 69e38db28e5f..a8020293f342 100644
--- a/net/ceph/ceph_common.c
+++ b/net/ceph/ceph_common.c
@@ -84,7 +84,6 @@ int ceph_check_fsid(struct ceph_client *client, struct ceph_fsid *fsid)
 			return -1;
 		}
 	} else {
-		pr_info("client%lld fsid %pU\n", ceph_client_id(client), fsid);
 		memcpy(&client->fsid, fsid, sizeof(*fsid));
 	}
 	return 0;
diff --git a/net/ceph/debugfs.c b/net/ceph/debugfs.c
index 54b531a01121..38b5dc1823d4 100644
--- a/net/ceph/debugfs.c
+++ b/net/ceph/debugfs.c
@@ -189,6 +189,9 @@ int ceph_debugfs_client_init(struct ceph_client *client)
 	snprintf(name, sizeof(name), "%pU.client%lld", &client->fsid,
 		 client->monc.auth->global_id);
 
+	dout("ceph_debugfs_client_init %p %s\n", client, name);
+
+	BUG_ON(client->debugfs_dir);
 	client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir);
 	if (!client->debugfs_dir)
 		goto out;
@@ -234,6 +237,7 @@ out:
 
 void ceph_debugfs_client_cleanup(struct ceph_client *client)
 {
+	dout("ceph_debugfs_client_cleanup %p\n", client);
 	debugfs_remove(client->debugfs_osdmap);
 	debugfs_remove(client->debugfs_monmap);
 	debugfs_remove(client->osdc.debugfs_file);
diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c
index b9796750034a..24c5eea8c45b 100644
--- a/net/ceph/messenger.c
+++ b/net/ceph/messenger.c
@@ -915,7 +915,6 @@ static int prepare_write_connect(struct ceph_connection *con)
 	con->out_connect.authorizer_len = auth ?
 		cpu_to_le32(auth->authorizer_buf_len) : 0;
 
-	con_out_kvec_reset(con);
 	con_out_kvec_add(con, sizeof (con->out_connect),
 					&con->out_connect);
 	if (auth && auth->authorizer_buf_len)
@@ -1557,6 +1556,7 @@ static int process_connect(struct ceph_connection *con)
 			return -1;
 		}
 		con->auth_retry = 1;
+		con_out_kvec_reset(con);
 		ret = prepare_write_connect(con);
 		if (ret < 0)
 			return ret;
@@ -1577,6 +1577,7 @@ static int process_connect(struct ceph_connection *con)
 		       ENTITY_NAME(con->peer_name),
 		       ceph_pr_addr(&con->peer_addr.in_addr));
 		reset_connection(con);
+		con_out_kvec_reset(con);
 		ret = prepare_write_connect(con);
 		if (ret < 0)
 			return ret;
@@ -1601,6 +1602,7 @@ static int process_connect(struct ceph_connection *con)
 		     le32_to_cpu(con->out_connect.connect_seq),
 		     le32_to_cpu(con->in_reply.connect_seq));
 		con->connect_seq = le32_to_cpu(con->in_reply.connect_seq);
+		con_out_kvec_reset(con);
 		ret = prepare_write_connect(con);
 		if (ret < 0)
 			return ret;
@@ -1617,6 +1619,7 @@ static int process_connect(struct ceph_connection *con)
 		     le32_to_cpu(con->in_reply.global_seq));
 		get_global_seq(con->msgr,
 			       le32_to_cpu(con->in_reply.global_seq));
+		con_out_kvec_reset(con);
 		ret = prepare_write_connect(con);
 		if (ret < 0)
 			return ret;
@@ -2135,7 +2138,11 @@ more:
 		BUG_ON(con->state != CON_STATE_CONNECTING);
 		con->state = CON_STATE_NEGOTIATING;
 
-		/* Banner is good, exchange connection info */
+		/*
+		 * Received banner is good, exchange connection info.
+		 * Do not reset out_kvec, as sending our banner raced
+		 * with receiving peer banner after connect completed.
+		 */
 		ret = prepare_write_connect(con);
 		if (ret < 0)
 			goto out;
diff --git a/net/ceph/mon_client.c b/net/ceph/mon_client.c
index 105d533b55f3..900ea0f043fc 100644
--- a/net/ceph/mon_client.c
+++ b/net/ceph/mon_client.c
@@ -311,6 +311,17 @@ int ceph_monc_open_session(struct ceph_mon_client *monc)
 EXPORT_SYMBOL(ceph_monc_open_session);
 
 /*
+ * We require the fsid and global_id in order to initialize our
+ * debugfs dir.
+ */
+static bool have_debugfs_info(struct ceph_mon_client *monc)
+{
+	dout("have_debugfs_info fsid %d globalid %lld\n",
+	     (int)monc->client->have_fsid, monc->auth->global_id);
+	return monc->client->have_fsid && monc->auth->global_id > 0;
+}
+
+/*
  * The monitor responds with mount ack indicate mount success.  The
  * included client ticket allows the client to talk to MDSs and OSDs.
  */
@@ -320,9 +331,12 @@ static void ceph_monc_handle_map(struct ceph_mon_client *monc,
 	struct ceph_client *client = monc->client;
 	struct ceph_monmap *monmap = NULL, *old = monc->monmap;
 	void *p, *end;
+	int had_debugfs_info, init_debugfs = 0;
 
 	mutex_lock(&monc->mutex);
 
+	had_debugfs_info = have_debugfs_info(monc);
+
 	dout("handle_monmap\n");
 	p = msg->front.iov_base;
 	end = p + msg->front.iov_len;
@@ -344,12 +358,22 @@ static void ceph_monc_handle_map(struct ceph_mon_client *monc,
 
 	if (!client->have_fsid) {
 		client->have_fsid = true;
+		if (!had_debugfs_info && have_debugfs_info(monc)) {
+			pr_info("client%lld fsid %pU\n",
+				ceph_client_id(monc->client),
+				&monc->client->fsid);
+			init_debugfs = 1;
+		}
 		mutex_unlock(&monc->mutex);
-		/*
-		 * do debugfs initialization without mutex to avoid
-		 * creating a locking dependency
-		 */
-		ceph_debugfs_client_init(client);
+
+		if (init_debugfs) {
+			/*
+			 * do debugfs initialization without mutex to avoid
+			 * creating a locking dependency
+			 */
+			ceph_debugfs_client_init(monc->client);
+		}
+
 		goto out_unlocked;
 	}
 out:
@@ -865,8 +889,10 @@ static void handle_auth_reply(struct ceph_mon_client *monc,
 {
 	int ret;
 	int was_auth = 0;
+	int had_debugfs_info, init_debugfs = 0;
 
 	mutex_lock(&monc->mutex);
+	had_debugfs_info = have_debugfs_info(monc);
 	if (monc->auth->ops)
 		was_auth = monc->auth->ops->is_authenticated(monc->auth);
 	monc->pending_auth = 0;
@@ -889,7 +915,22 @@ static void handle_auth_reply(struct ceph_mon_client *monc,
 		__send_subscribe(monc);
 		__resend_generic_request(monc);
 	}
+
+	if (!had_debugfs_info && have_debugfs_info(monc)) {
+		pr_info("client%lld fsid %pU\n",
+			ceph_client_id(monc->client),
+			&monc->client->fsid);
+		init_debugfs = 1;
+	}
 	mutex_unlock(&monc->mutex);
+
+	if (init_debugfs) {
+		/*
+		 * do debugfs initialization without mutex to avoid
+		 * creating a locking dependency
+		 */
+		ceph_debugfs_client_init(monc->client);
+	}
 }
 
 static int __validate_auth(struct ceph_mon_client *monc)
diff --git a/net/core/dev.c b/net/core/dev.c
index 0640d2a859c6..b1e6d6385516 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1466,8 +1466,7 @@ EXPORT_SYMBOL(unregister_netdevice_notifier);
 
 int call_netdevice_notifiers(unsigned long val, struct net_device *dev)
 {
-	if (val != NETDEV_UNREGISTER_FINAL)
-		ASSERT_RTNL();
+	ASSERT_RTNL();
 	return raw_notifier_call_chain(&netdev_chain, val, dev);
 }
 EXPORT_SYMBOL(call_netdevice_notifiers);
@@ -2185,9 +2184,7 @@ EXPORT_SYMBOL(netif_skb_features);
 /*
  * Returns true if either:
  *	1. skb has frag_list and the device doesn't support FRAGLIST, or
- *	2. skb is fragmented and the device does not support SG, or if
- *	   at least one of fragments is in highmem and device does not
- *	   support DMA from it.
+ *	2. skb is fragmented and the device does not support SG.
  */
 static inline int skb_needs_linearize(struct sk_buff *skb,
 				      int features)
@@ -4521,8 +4518,8 @@ static void dev_change_rx_flags(struct net_device *dev, int flags)
 static int __dev_set_promiscuity(struct net_device *dev, int inc)
 {
 	unsigned int old_flags = dev->flags;
-	uid_t uid;
-	gid_t gid;
+	kuid_t uid;
+	kgid_t gid;
 
 	ASSERT_RTNL();
 
@@ -4554,7 +4551,8 @@ static int __dev_set_promiscuity(struct net_device *dev, int inc)
 				dev->name, (dev->flags & IFF_PROMISC),
 				(old_flags & IFF_PROMISC),
 				audit_get_loginuid(current),
-				uid, gid,
+				from_kuid(&init_user_ns, uid),
+				from_kgid(&init_user_ns, gid),
 				audit_get_sessionid(current));
 		}
 
@@ -5649,6 +5647,8 @@ int register_netdevice(struct net_device *dev)
 
 	set_bit(__LINK_STATE_PRESENT, &dev->state);
 
+	linkwatch_init_dev(dev);
+
 	dev_init_scheduler(dev);
 	dev_hold(dev);
 	list_netdevice(dev);
@@ -5782,7 +5782,11 @@ static void netdev_wait_allrefs(struct net_device *dev)
 
 			/* Rebroadcast unregister notification */
 			call_netdevice_notifiers(NETDEV_UNREGISTER, dev);
+
+			__rtnl_unlock();
 			rcu_barrier();
+			rtnl_lock();
+
 			call_netdevice_notifiers(NETDEV_UNREGISTER_FINAL, dev);
 			if (test_bit(__LINK_STATE_LINKWATCH_PENDING,
 				     &dev->state)) {
@@ -5855,7 +5859,9 @@ void netdev_run_todo(void)
 			= list_first_entry(&list, struct net_device, todo_list);
 		list_del(&dev->todo_list);
 
+		rtnl_lock();
 		call_netdevice_notifiers(NETDEV_UNREGISTER_FINAL, dev);
+		__rtnl_unlock();
 
 		if (unlikely(dev->reg_state != NETREG_UNREGISTERING)) {
 			pr_err("network todo '%s' but state %d\n",
@@ -6251,6 +6257,8 @@ int dev_change_net_namespace(struct net_device *dev, struct net *net, const char
 	   the device is just moving and can keep their slaves up.
 	*/
 	call_netdevice_notifiers(NETDEV_UNREGISTER, dev);
+	rcu_barrier();
+	call_netdevice_notifiers(NETDEV_UNREGISTER_FINAL, dev);
 	rtmsg_ifinfo(RTM_DELLINK, dev, ~0U);
 
 	/*
diff --git a/net/core/fib_rules.c b/net/core/fib_rules.c
index 585093755c23..ab7db83236c9 100644
--- a/net/core/fib_rules.c
+++ b/net/core/fib_rules.c
@@ -711,16 +711,15 @@ static int fib_rules_event(struct notifier_block *this, unsigned long event,
 	struct net *net = dev_net(dev);
 	struct fib_rules_ops *ops;
 
+	ASSERT_RTNL();
 
 	switch (event) {
 	case NETDEV_REGISTER:
-		ASSERT_RTNL();
 		list_for_each_entry(ops, &net->rules_ops, list)
 			attach_rules(&ops->rules_list, dev);
 		break;
 
 	case NETDEV_UNREGISTER:
-		ASSERT_RTNL();
 		list_for_each_entry(ops, &net->rules_ops, list)
 			detach_rules(&ops->rules_list, dev);
 		break;
diff --git a/net/core/link_watch.c b/net/core/link_watch.c
index c3519c6d1b16..a01922219a23 100644
--- a/net/core/link_watch.c
+++ b/net/core/link_watch.c
@@ -76,6 +76,14 @@ static void rfc2863_policy(struct net_device *dev)
 }
 
 
+void linkwatch_init_dev(struct net_device *dev)
+{
+	/* Handle pre-registration link state changes */
+	if (!netif_carrier_ok(dev) || netif_dormant(dev))
+		rfc2863_policy(dev);
+}
+
+
 static bool linkwatch_urgent_event(struct net_device *dev)
 {
 	if (!netif_running(dev))
diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index 346b1eb83a1f..dd67818025d1 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -168,24 +168,16 @@ static void poll_napi(struct net_device *dev)
 	struct napi_struct *napi;
 	int budget = 16;
 
-	WARN_ON_ONCE(!irqs_disabled());
-
 	list_for_each_entry(napi, &dev->napi_list, dev_list) {
-		local_irq_enable();
 		if (napi->poll_owner != smp_processor_id() &&
 		    spin_trylock(&napi->poll_lock)) {
-			rcu_read_lock_bh();
 			budget = poll_one_napi(rcu_dereference_bh(dev->npinfo),
 					       napi, budget);
-			rcu_read_unlock_bh();
 			spin_unlock(&napi->poll_lock);
 
-			if (!budget) {
-				local_irq_disable();
+			if (!budget)
 				break;
-			}
 		}
-		local_irq_disable();
 	}
 }
 
@@ -388,6 +380,7 @@ void netpoll_send_udp(struct netpoll *np, const char *msg, int len)
 	struct udphdr *udph;
 	struct iphdr *iph;
 	struct ethhdr *eth;
+	static atomic_t ip_ident;
 
 	udp_len = len + sizeof(*udph);
 	ip_len = udp_len + sizeof(*iph);
@@ -423,7 +416,7 @@ void netpoll_send_udp(struct netpoll *np, const char *msg, int len)
 	put_unaligned(0x45, (unsigned char *)iph);
 	iph->tos      = 0;
 	put_unaligned(htons(ip_len), &(iph->tot_len));
-	iph->id       = 0;
+	iph->id       = htons(atomic_inc_return(&ip_ident));
 	iph->frag_off = 0;
 	iph->ttl      = 64;
 	iph->protocol = IPPROTO_UDP;
diff --git a/net/core/request_sock.c b/net/core/request_sock.c
index 9b570a6a33c5..c31d9e8668c3 100644
--- a/net/core/request_sock.c
+++ b/net/core/request_sock.c
@@ -15,6 +15,7 @@
 #include <linux/random.h>
 #include <linux/slab.h>
 #include <linux/string.h>
+#include <linux/tcp.h>
 #include <linux/vmalloc.h>
 
 #include <net/request_sock.h>
@@ -130,3 +131,97 @@ void reqsk_queue_destroy(struct request_sock_queue *queue)
 		kfree(lopt);
 }
 
+/*
+ * This function is called to set a Fast Open socket's "fastopen_rsk" field
+ * to NULL when a TFO socket no longer needs to access the request_sock.
+ * This happens only after 3WHS has been either completed or aborted (e.g.,
+ * RST is received).
+ *
+ * Before TFO, a child socket is created only after 3WHS is completed,
+ * hence it never needs to access the request_sock. things get a lot more
+ * complex with TFO. A child socket, accepted or not, has to access its
+ * request_sock for 3WHS processing, e.g., to retransmit SYN-ACK pkts,
+ * until 3WHS is either completed or aborted. Afterwards the req will stay
+ * until either the child socket is accepted, or in the rare case when the
+ * listener is closed before the child is accepted.
+ *
+ * In short, a request socket is only freed after BOTH 3WHS has completed
+ * (or aborted) and the child socket has been accepted (or listener closed).
+ * When a child socket is accepted, its corresponding req->sk is set to
+ * NULL since it's no longer needed. More importantly, "req->sk == NULL"
+ * will be used by the code below to determine if a child socket has been
+ * accepted or not, and the check is protected by the fastopenq->lock
+ * described below.
+ *
+ * Note that fastopen_rsk is only accessed from the child socket's context
+ * with its socket lock held. But a request_sock (req) can be accessed by
+ * both its child socket through fastopen_rsk, and a listener socket through
+ * icsk_accept_queue.rskq_accept_head. To protect the access a simple spin
+ * lock per listener "icsk->icsk_accept_queue.fastopenq->lock" is created.
+ * only in the rare case when both the listener and the child locks are held,
+ * e.g., in inet_csk_listen_stop() do we not need to acquire the lock.
+ * The lock also protects other fields such as fastopenq->qlen, which is
+ * decremented by this function when fastopen_rsk is no longer needed.
+ *
+ * Note that another solution was to simply use the existing socket lock
+ * from the listener. But first socket lock is difficult to use. It is not
+ * a simple spin lock - one must consider sock_owned_by_user() and arrange
+ * to use sk_add_backlog() stuff. But what really makes it infeasible is the
+ * locking hierarchy violation. E.g., inet_csk_listen_stop() may try to
+ * acquire a child's lock while holding listener's socket lock. A corner
+ * case might also exist in tcp_v4_hnd_req() that will trigger this locking
+ * order.
+ *
+ * When a TFO req is created, it needs to sock_hold its listener to prevent
+ * the latter data structure from going away.
+ *
+ * This function also sets "treq->listener" to NULL and unreference listener
+ * socket. treq->listener is used by the listener so it is protected by the
+ * fastopenq->lock in this function.
+ */
+void reqsk_fastopen_remove(struct sock *sk, struct request_sock *req,
+			   bool reset)
+{
+	struct sock *lsk = tcp_rsk(req)->listener;
+	struct fastopen_queue *fastopenq =
+	    inet_csk(lsk)->icsk_accept_queue.fastopenq;
+
+	BUG_ON(!spin_is_locked(&sk->sk_lock.slock) && !sock_owned_by_user(sk));
+
+	tcp_sk(sk)->fastopen_rsk = NULL;
+	spin_lock_bh(&fastopenq->lock);
+	fastopenq->qlen--;
+	tcp_rsk(req)->listener = NULL;
+	if (req->sk)	/* the child socket hasn't been accepted yet */
+		goto out;
+
+	if (!reset || lsk->sk_state != TCP_LISTEN) {
+		/* If the listener has been closed don't bother with the
+		 * special RST handling below.
+		 */
+		spin_unlock_bh(&fastopenq->lock);
+		sock_put(lsk);
+		reqsk_free(req);
+		return;
+	}
+	/* Wait for 60secs before removing a req that has triggered RST.
+	 * This is a simple defense against TFO spoofing attack - by
+	 * counting the req against fastopen.max_qlen, and disabling
+	 * TFO when the qlen exceeds max_qlen.
+	 *
+	 * For more details see CoNext'11 "TCP Fast Open" paper.
+	 */
+	req->expires = jiffies + 60*HZ;
+	if (fastopenq->rskq_rst_head == NULL)
+		fastopenq->rskq_rst_head = req;
+	else
+		fastopenq->rskq_rst_tail->dl_next = req;
+
+	req->dl_next = NULL;
+	fastopenq->rskq_rst_tail = req;
+	fastopenq->qlen++;
+out:
+	spin_unlock_bh(&fastopenq->lock);
+	sock_put(lsk);
+	return;
+}
diff --git a/net/core/scm.c b/net/core/scm.c
index 040cebeed45b..6ab491d6c26f 100644
--- a/net/core/scm.c
+++ b/net/core/scm.c
@@ -45,12 +45,17 @@
 static __inline__ int scm_check_creds(struct ucred *creds)
 {
 	const struct cred *cred = current_cred();
+	kuid_t uid = make_kuid(cred->user_ns, creds->uid);
+	kgid_t gid = make_kgid(cred->user_ns, creds->gid);
+
+	if (!uid_valid(uid) || !gid_valid(gid))
+		return -EINVAL;
 
 	if ((creds->pid == task_tgid_vnr(current) || capable(CAP_SYS_ADMIN)) &&
-	    ((creds->uid == cred->uid   || creds->uid == cred->euid ||
-	      creds->uid == cred->suid) || capable(CAP_SETUID)) &&
-	    ((creds->gid == cred->gid   || creds->gid == cred->egid ||
-	      creds->gid == cred->sgid) || capable(CAP_SETGID))) {
+	    ((uid_eq(uid, cred->uid)   || uid_eq(uid, cred->euid) ||
+	      uid_eq(uid, cred->suid)) || capable(CAP_SETUID)) &&
+	    ((gid_eq(gid, cred->gid)   || gid_eq(gid, cred->egid) ||
+	      gid_eq(gid, cred->sgid)) || capable(CAP_SETGID))) {
 	       return 0;
 	}
 	return -EPERM;
@@ -149,6 +154,9 @@ int __scm_send(struct socket *sock, struct msghdr *msg, struct scm_cookie *p)
 				goto error;
 			break;
 		case SCM_CREDENTIALS:
+		{
+			kuid_t uid;
+			kgid_t gid;
 			if (cmsg->cmsg_len != CMSG_LEN(sizeof(struct ucred)))
 				goto error;
 			memcpy(&p->creds, CMSG_DATA(cmsg), sizeof(struct ucred));
@@ -166,22 +174,29 @@ int __scm_send(struct socket *sock, struct msghdr *msg, struct scm_cookie *p)
 				p->pid = pid;
 			}
 
+			err = -EINVAL;
+			uid = make_kuid(current_user_ns(), p->creds.uid);
+			gid = make_kgid(current_user_ns(), p->creds.gid);
+			if (!uid_valid(uid) || !gid_valid(gid))
+				goto error;
+
 			if (!p->cred ||
-			    (p->cred->euid != p->creds.uid) ||
-			    (p->cred->egid != p->creds.gid)) {
+			    !uid_eq(p->cred->euid, uid) ||
+			    !gid_eq(p->cred->egid, gid)) {
 				struct cred *cred;
 				err = -ENOMEM;
 				cred = prepare_creds();
 				if (!cred)
 					goto error;
 
-				cred->uid = cred->euid = p->creds.uid;
-				cred->gid = cred->egid = p->creds.gid;
+				cred->uid = cred->euid = uid;
+				cred->gid = cred->egid = gid;
 				if (p->cred)
 					put_cred(p->cred);
 				p->cred = cred;
 			}
 			break;
+		}
 		default:
 			goto error;
 		}
diff --git a/net/core/sock.c b/net/core/sock.c
index 8f67ced8d6a8..d765156eab65 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -868,8 +868,8 @@ void cred_to_ucred(struct pid *pid, const struct cred *cred,
 	if (cred) {
 		struct user_namespace *current_ns = current_user_ns();
 
-		ucred->uid = from_kuid(current_ns, cred->euid);
-		ucred->gid = from_kgid(current_ns, cred->egid);
+		ucred->uid = from_kuid_munged(current_ns, cred->euid);
+		ucred->gid = from_kgid_munged(current_ns, cred->egid);
 	}
 }
 EXPORT_SYMBOL_GPL(cred_to_ucred);
@@ -1230,7 +1230,7 @@ void sock_update_classid(struct sock *sk)
 	rcu_read_lock();  /* doing current task, which cannot vanish. */
 	classid = task_cls_classid(current);
 	rcu_read_unlock();
-	if (classid && classid != sk->sk_classid)
+	if (classid != sk->sk_classid)
 		sk->sk_classid = classid;
 }
 EXPORT_SYMBOL(sock_update_classid);
@@ -1527,12 +1527,12 @@ void sock_edemux(struct sk_buff *skb)
 }
 EXPORT_SYMBOL(sock_edemux);
 
-int sock_i_uid(struct sock *sk)
+kuid_t sock_i_uid(struct sock *sk)
 {
-	int uid;
+	kuid_t uid;
 
 	read_lock_bh(&sk->sk_callback_lock);
-	uid = sk->sk_socket ? SOCK_INODE(sk->sk_socket)->i_uid : 0;
+	uid = sk->sk_socket ? SOCK_INODE(sk->sk_socket)->i_uid : GLOBAL_ROOT_UID;
 	read_unlock_bh(&sk->sk_callback_lock);
 	return uid;
 }
diff --git a/net/decnet/af_decnet.c b/net/decnet/af_decnet.c
index 2ba1a2814c24..307c322d53bb 100644
--- a/net/decnet/af_decnet.c
+++ b/net/decnet/af_decnet.c
@@ -1313,10 +1313,10 @@ static int dn_shutdown(struct socket *sock, int how)
 	if (scp->state == DN_O)
 		goto out;
 
-	if (how != SHUTDOWN_MASK)
+	if (how != SHUT_RDWR)
 		goto out;
 
-	sk->sk_shutdown = how;
+	sk->sk_shutdown = SHUTDOWN_MASK;
 	dn_destroy_sock(sk);
 	err = 0;
 
diff --git a/net/ieee802154/6lowpan.c b/net/ieee802154/6lowpan.c
index 6a095225148e..d5291113584f 100644
--- a/net/ieee802154/6lowpan.c
+++ b/net/ieee802154/6lowpan.c
@@ -1063,12 +1063,6 @@ out:
 	return (err < 0 ? NETDEV_TX_BUSY : NETDEV_TX_OK);
 }
 
-static void lowpan_dev_free(struct net_device *dev)
-{
-	dev_put(lowpan_dev_info(dev)->real_dev);
-	free_netdev(dev);
-}
-
 static struct wpan_phy *lowpan_get_phy(const struct net_device *dev)
 {
 	struct net_device *real_dev = lowpan_dev_info(dev)->real_dev;
@@ -1118,7 +1112,7 @@ static void lowpan_setup(struct net_device *dev)
 	dev->netdev_ops		= &lowpan_netdev_ops;
 	dev->header_ops		= &lowpan_header_ops;
 	dev->ml_priv		= &lowpan_mlme;
-	dev->destructor		= lowpan_dev_free;
+	dev->destructor		= free_netdev;
 }
 
 static int lowpan_validate(struct nlattr *tb[], struct nlattr *data[])
@@ -1133,6 +1127,8 @@ static int lowpan_validate(struct nlattr *tb[], struct nlattr *data[])
 static int lowpan_rcv(struct sk_buff *skb, struct net_device *dev,
 	struct packet_type *pt, struct net_device *orig_dev)
 {
+	struct sk_buff *local_skb;
+
 	if (!netif_running(dev))
 		goto drop;
 
@@ -1144,7 +1140,12 @@ static int lowpan_rcv(struct sk_buff *skb, struct net_device *dev,
 	case LOWPAN_DISPATCH_IPHC:	/* ipv6 datagram */
 	case LOWPAN_DISPATCH_FRAG1:	/* first fragment header */
 	case LOWPAN_DISPATCH_FRAGN:	/* next fragments headers */
-		lowpan_process_data(skb);
+		local_skb = skb_clone(skb, GFP_ATOMIC);
+		if (!local_skb)
+			goto drop;
+		lowpan_process_data(local_skb);
+
+		kfree_skb(skb);
 		break;
 	default:
 		break;
@@ -1237,6 +1238,34 @@ static inline void __init lowpan_netlink_fini(void)
 	rtnl_link_unregister(&lowpan_link_ops);
 }
 
+static int lowpan_device_event(struct notifier_block *unused,
+				unsigned long event,
+				void *ptr)
+{
+	struct net_device *dev = ptr;
+	LIST_HEAD(del_list);
+	struct lowpan_dev_record *entry, *tmp;
+
+	if (dev->type != ARPHRD_IEEE802154)
+		goto out;
+
+	if (event == NETDEV_UNREGISTER) {
+		list_for_each_entry_safe(entry, tmp, &lowpan_devices, list) {
+			if (lowpan_dev_info(entry->ldev)->real_dev == dev)
+				lowpan_dellink(entry->ldev, &del_list);
+		}
+
+		unregister_netdevice_many(&del_list);
+	};
+
+out:
+	return NOTIFY_DONE;
+}
+
+static struct notifier_block lowpan_dev_notifier = {
+	.notifier_call = lowpan_device_event,
+};
+
 static struct packet_type lowpan_packet_type = {
 	.type = __constant_htons(ETH_P_IEEE802154),
 	.func = lowpan_rcv,
@@ -1251,6 +1280,12 @@ static int __init lowpan_init_module(void)
 		goto out;
 
 	dev_add_pack(&lowpan_packet_type);
+
+	err = register_netdevice_notifier(&lowpan_dev_notifier);
+	if (err < 0) {
+		dev_remove_pack(&lowpan_packet_type);
+		lowpan_netlink_fini();
+	}
 out:
 	return err;
 }
@@ -1263,6 +1298,8 @@ static void __exit lowpan_cleanup_module(void)
 
 	dev_remove_pack(&lowpan_packet_type);
 
+	unregister_netdevice_notifier(&lowpan_dev_notifier);
+
 	/* Now 6lowpan packet_type is removed, so no new fragments are
 	 * expected on RX, therefore that's the time to clean incomplete
 	 * fragments.
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 6681ccf5c3ee..4f70ef0b946d 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -149,6 +149,11 @@ void inet_sock_destruct(struct sock *sk)
 		pr_err("Attempt to release alive inet socket %p\n", sk);
 		return;
 	}
+	if (sk->sk_type == SOCK_STREAM) {
+		struct fastopen_queue *fastopenq =
+			inet_csk(sk)->icsk_accept_queue.fastopenq;
+		kfree(fastopenq);
+	}
 
 	WARN_ON(atomic_read(&sk->sk_rmem_alloc));
 	WARN_ON(atomic_read(&sk->sk_wmem_alloc));
@@ -212,6 +217,26 @@ int inet_listen(struct socket *sock, int backlog)
 	 * we can only allow the backlog to be adjusted.
 	 */
 	if (old_state != TCP_LISTEN) {
+		/* Check special setups for testing purpose to enable TFO w/o
+		 * requiring TCP_FASTOPEN sockopt.
+		 * Note that only TCP sockets (SOCK_STREAM) will reach here.
+		 * Also fastopenq may already been allocated because this
+		 * socket was in TCP_LISTEN state previously but was
+		 * shutdown() (rather than close()).
+		 */
+		if ((sysctl_tcp_fastopen & TFO_SERVER_ENABLE) != 0 &&
+		    inet_csk(sk)->icsk_accept_queue.fastopenq == NULL) {
+			if ((sysctl_tcp_fastopen & TFO_SERVER_WO_SOCKOPT1) != 0)
+				err = fastopen_init_queue(sk, backlog);
+			else if ((sysctl_tcp_fastopen &
+				  TFO_SERVER_WO_SOCKOPT2) != 0)
+				err = fastopen_init_queue(sk,
+				    ((uint)sysctl_tcp_fastopen) >> 16);
+			else
+				err = 0;
+			if (err)
+				goto out;
+		}
 		err = inet_csk_listen_start(sk, backlog);
 		if (err)
 			goto out;
@@ -701,7 +726,8 @@ int inet_accept(struct socket *sock, struct socket *newsock, int flags)
 
 	sock_rps_record_flow(sk2);
 	WARN_ON(!((1 << sk2->sk_state) &
-		  (TCPF_ESTABLISHED | TCPF_CLOSE_WAIT | TCPF_CLOSE)));
+		  (TCPF_ESTABLISHED | TCPF_SYN_RECV |
+		  TCPF_CLOSE_WAIT | TCPF_CLOSE)));
 
 	sock_graft(sk2, newsock);
 
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index 6a5e6e4b142c..adf273f8ad2e 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -1147,12 +1147,8 @@ static int inetdev_event(struct notifier_block *this, unsigned long event,
 			 void *ptr)
 {
 	struct net_device *dev = ptr;
-	struct in_device *in_dev;
-
-	if (event == NETDEV_UNREGISTER_FINAL)
-		goto out;
+	struct in_device *in_dev = __in_dev_get_rtnl(dev);
 
-	in_dev = __in_dev_get_rtnl(dev);
 	ASSERT_RTNL();
 
 	if (!in_dev) {
diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index fd7d9ae64f16..acdee325d972 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -1050,9 +1050,6 @@ static int fib_netdev_event(struct notifier_block *this, unsigned long event, vo
 		return NOTIFY_DONE;
 	}
 
-	if (event == NETDEV_UNREGISTER_FINAL)
-		return NOTIFY_DONE;
-
 	in_dev = __in_dev_get_rtnl(dev);
 
 	switch (event) {
@@ -1064,14 +1061,14 @@ static int fib_netdev_event(struct notifier_block *this, unsigned long event, vo
 		fib_sync_up(dev);
 #endif
 		atomic_inc(&net->ipv4.dev_addr_genid);
-		rt_cache_flush(dev_net(dev), -1);
+		rt_cache_flush(net, -1);
 		break;
 	case NETDEV_DOWN:
 		fib_disable_ip(dev, 0, 0);
 		break;
 	case NETDEV_CHANGEMTU:
 	case NETDEV_CHANGE:
-		rt_cache_flush(dev_net(dev), 0);
+		rt_cache_flush(net, 0);
 		break;
 	}
 	return NOTIFY_DONE;
diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
index 7f75f21d7b83..8464b79c493f 100644
--- a/net/ipv4/inet_connection_sock.c
+++ b/net/ipv4/inet_connection_sock.c
@@ -283,7 +283,9 @@ static int inet_csk_wait_for_connect(struct sock *sk, long timeo)
 struct sock *inet_csk_accept(struct sock *sk, int flags, int *err)
 {
 	struct inet_connection_sock *icsk = inet_csk(sk);
+	struct request_sock_queue *queue = &icsk->icsk_accept_queue;
 	struct sock *newsk;
+	struct request_sock *req;
 	int error;
 
 	lock_sock(sk);
@@ -296,7 +298,7 @@ struct sock *inet_csk_accept(struct sock *sk, int flags, int *err)
 		goto out_err;
 
 	/* Find already established connection */
-	if (reqsk_queue_empty(&icsk->icsk_accept_queue)) {
+	if (reqsk_queue_empty(queue)) {
 		long timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK);
 
 		/* If this is a non blocking socket don't sleep */
@@ -308,14 +310,32 @@ struct sock *inet_csk_accept(struct sock *sk, int flags, int *err)
 		if (error)
 			goto out_err;
 	}
-
-	newsk = reqsk_queue_get_child(&icsk->icsk_accept_queue, sk);
-	WARN_ON(newsk->sk_state == TCP_SYN_RECV);
+	req = reqsk_queue_remove(queue);
+	newsk = req->sk;
+
+	sk_acceptq_removed(sk);
+	if (sk->sk_type == SOCK_STREAM && queue->fastopenq != NULL) {
+		spin_lock_bh(&queue->fastopenq->lock);
+		if (tcp_rsk(req)->listener) {
+			/* We are still waiting for the final ACK from 3WHS
+			 * so can't free req now. Instead, we set req->sk to
+			 * NULL to signify that the child socket is taken
+			 * so reqsk_fastopen_remove() will free the req
+			 * when 3WHS finishes (or is aborted).
+			 */
+			req->sk = NULL;
+			req = NULL;
+		}
+		spin_unlock_bh(&queue->fastopenq->lock);
+	}
 out:
 	release_sock(sk);
+	if (req)
+		__reqsk_free(req);
 	return newsk;
 out_err:
 	newsk = NULL;
+	req = NULL;
 	*err = error;
 	goto out;
 }
@@ -720,13 +740,14 @@ EXPORT_SYMBOL_GPL(inet_csk_listen_start);
 void inet_csk_listen_stop(struct sock *sk)
 {
 	struct inet_connection_sock *icsk = inet_csk(sk);
+	struct request_sock_queue *queue = &icsk->icsk_accept_queue;
 	struct request_sock *acc_req;
 	struct request_sock *req;
 
 	inet_csk_delete_keepalive_timer(sk);
 
 	/* make all the listen_opt local to us */
-	acc_req = reqsk_queue_yank_acceptq(&icsk->icsk_accept_queue);
+	acc_req = reqsk_queue_yank_acceptq(queue);
 
 	/* Following specs, it would be better either to send FIN
 	 * (and enter FIN-WAIT-1, it is normal close)
@@ -736,7 +757,7 @@ void inet_csk_listen_stop(struct sock *sk)
 	 * To be honest, we are not able to make either
 	 * of the variants now.			--ANK
 	 */
-	reqsk_queue_destroy(&icsk->icsk_accept_queue);
+	reqsk_queue_destroy(queue);
 
 	while ((req = acc_req) != NULL) {
 		struct sock *child = req->sk;
@@ -754,6 +775,19 @@ void inet_csk_listen_stop(struct sock *sk)
 
 		percpu_counter_inc(sk->sk_prot->orphan_count);
 
+		if (sk->sk_type == SOCK_STREAM && tcp_rsk(req)->listener) {
+			BUG_ON(tcp_sk(child)->fastopen_rsk != req);
+			BUG_ON(sk != tcp_rsk(req)->listener);
+
+			/* Paranoid, to prevent race condition if
+			 * an inbound pkt destined for child is
+			 * blocked by sock lock in tcp_v4_rcv().
+			 * Also to satisfy an assertion in
+			 * tcp_v4_destroy_sock().
+			 */
+			tcp_sk(child)->fastopen_rsk = NULL;
+			sock_put(sk);
+		}
 		inet_csk_destroy_sock(child);
 
 		bh_unlock_sock(child);
@@ -763,6 +797,17 @@ void inet_csk_listen_stop(struct sock *sk)
 		sk_acceptq_removed(sk);
 		__reqsk_free(req);
 	}
+	if (queue->fastopenq != NULL) {
+		/* Free all the reqs queued in rskq_rst_head. */
+		spin_lock_bh(&queue->fastopenq->lock);
+		acc_req = queue->fastopenq->rskq_rst_head;
+		queue->fastopenq->rskq_rst_head = NULL;
+		spin_unlock_bh(&queue->fastopenq->lock);
+		while ((req = acc_req) != NULL) {
+			acc_req = req->dl_next;
+			__reqsk_free(req);
+		}
+	}
 	WARN_ON(sk->sk_ack_backlog);
 }
 EXPORT_SYMBOL_GPL(inet_csk_listen_stop);
diff --git a/net/ipv4/inet_diag.c b/net/ipv4/inet_diag.c
index 570e61f9611f..8bc005b1435f 100644
--- a/net/ipv4/inet_diag.c
+++ b/net/ipv4/inet_diag.c
@@ -69,6 +69,7 @@ static inline void inet_diag_unlock_handler(
 
 int inet_sk_diag_fill(struct sock *sk, struct inet_connection_sock *icsk,
 			      struct sk_buff *skb, struct inet_diag_req_v2 *req,
+			      struct user_namespace *user_ns,		      	
 			      u32 pid, u32 seq, u16 nlmsg_flags,
 			      const struct nlmsghdr *unlh)
 {
@@ -124,7 +125,7 @@ int inet_sk_diag_fill(struct sock *sk, struct inet_connection_sock *icsk,
 	}
 #endif
 
-	r->idiag_uid = sock_i_uid(sk);
+	r->idiag_uid = from_kuid_munged(user_ns, sock_i_uid(sk));
 	r->idiag_inode = sock_i_ino(sk);
 
 	if (ext & (1 << (INET_DIAG_MEMINFO - 1))) {
@@ -199,11 +200,12 @@ EXPORT_SYMBOL_GPL(inet_sk_diag_fill);
 
 static int inet_csk_diag_fill(struct sock *sk,
 			      struct sk_buff *skb, struct inet_diag_req_v2 *req,
+			      struct user_namespace *user_ns,
 			      u32 pid, u32 seq, u16 nlmsg_flags,
 			      const struct nlmsghdr *unlh)
 {
 	return inet_sk_diag_fill(sk, inet_csk(sk),
-			skb, req, pid, seq, nlmsg_flags, unlh);
+			skb, req, user_ns, pid, seq, nlmsg_flags, unlh);
 }
 
 static int inet_twsk_diag_fill(struct inet_timewait_sock *tw,
@@ -256,14 +258,16 @@ static int inet_twsk_diag_fill(struct inet_timewait_sock *tw,
 }
 
 static int sk_diag_fill(struct sock *sk, struct sk_buff *skb,
-			struct inet_diag_req_v2 *r, u32 pid, u32 seq, u16 nlmsg_flags,
+			struct inet_diag_req_v2 *r,
+			struct user_namespace *user_ns,
+			u32 pid, u32 seq, u16 nlmsg_flags,
 			const struct nlmsghdr *unlh)
 {
 	if (sk->sk_state == TCP_TIME_WAIT)
 		return inet_twsk_diag_fill((struct inet_timewait_sock *)sk,
 					   skb, r, pid, seq, nlmsg_flags,
 					   unlh);
-	return inet_csk_diag_fill(sk, skb, r, pid, seq, nlmsg_flags, unlh);
+	return inet_csk_diag_fill(sk, skb, r, user_ns, pid, seq, nlmsg_flags, unlh);
 }
 
 int inet_diag_dump_one_icsk(struct inet_hashinfo *hashinfo, struct sk_buff *in_skb,
@@ -311,6 +315,7 @@ int inet_diag_dump_one_icsk(struct inet_hashinfo *hashinfo, struct sk_buff *in_s
 	}
 
 	err = sk_diag_fill(sk, rep, req,
+			   sk_user_ns(NETLINK_CB(in_skb).ssk),
 			   NETLINK_CB(in_skb).pid,
 			   nlh->nlmsg_seq, 0, nlh);
 	if (err < 0) {
@@ -551,6 +556,7 @@ static int inet_csk_diag_dump(struct sock *sk,
 		return 0;
 
 	return inet_csk_diag_fill(sk, skb, r,
+				  sk_user_ns(NETLINK_CB(cb->skb).ssk),
 				  NETLINK_CB(cb->skb).pid,
 				  cb->nlh->nlmsg_seq, NLM_F_MULTI, cb->nlh);
 }
@@ -591,7 +597,9 @@ static int inet_twsk_diag_dump(struct inet_timewait_sock *tw,
 }
 
 static int inet_diag_fill_req(struct sk_buff *skb, struct sock *sk,
-			      struct request_sock *req, u32 pid, u32 seq,
+			      struct request_sock *req,
+			      struct user_namespace *user_ns,
+			      u32 pid, u32 seq,
 			      const struct nlmsghdr *unlh)
 {
 	const struct inet_request_sock *ireq = inet_rsk(req);
@@ -625,7 +633,7 @@ static int inet_diag_fill_req(struct sk_buff *skb, struct sock *sk,
 	r->idiag_expires = jiffies_to_msecs(tmo);
 	r->idiag_rqueue = 0;
 	r->idiag_wqueue = 0;
-	r->idiag_uid = sock_i_uid(sk);
+	r->idiag_uid = from_kuid_munged(user_ns, sock_i_uid(sk));
 	r->idiag_inode = 0;
 #if IS_ENABLED(CONFIG_IPV6)
 	if (r->idiag_family == AF_INET6) {
@@ -702,6 +710,7 @@ static int inet_diag_dump_reqs(struct sk_buff *skb, struct sock *sk,
 			}
 
 			err = inet_diag_fill_req(skb, sk, req,
+					       sk_user_ns(NETLINK_CB(cb->skb).ssk),
 					       NETLINK_CB(cb->skb).pid,
 					       cb->nlh->nlmsg_seq, cb->nlh);
 			if (err < 0) {
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index 3a57570c8ee5..8aa7a4cf9139 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -124,6 +124,8 @@ static DEFINE_SPINLOCK(mfc_unres_lock);
 static struct kmem_cache *mrt_cachep __read_mostly;
 
 static struct mr_table *ipmr_new_table(struct net *net, u32 id);
+static void ipmr_free_table(struct mr_table *mrt);
+
 static int ip_mr_forward(struct net *net, struct mr_table *mrt,
 			 struct sk_buff *skb, struct mfc_cache *cache,
 			 int local);
@@ -131,6 +133,7 @@ static int ipmr_cache_report(struct mr_table *mrt,
 			     struct sk_buff *pkt, vifi_t vifi, int assert);
 static int __ipmr_fill_mroute(struct mr_table *mrt, struct sk_buff *skb,
 			      struct mfc_cache *c, struct rtmsg *rtm);
+static void mroute_clean_tables(struct mr_table *mrt);
 static void ipmr_expire_process(unsigned long arg);
 
 #ifdef CONFIG_IP_MROUTE_MULTIPLE_TABLES
@@ -271,7 +274,7 @@ static void __net_exit ipmr_rules_exit(struct net *net)
 
 	list_for_each_entry_safe(mrt, next, &net->ipv4.mr_tables, list) {
 		list_del(&mrt->list);
-		kfree(mrt);
+		ipmr_free_table(mrt);
 	}
 	fib_rules_unregister(net->ipv4.mr_rules_ops);
 }
@@ -299,7 +302,7 @@ static int __net_init ipmr_rules_init(struct net *net)
 
 static void __net_exit ipmr_rules_exit(struct net *net)
 {
-	kfree(net->ipv4.mrt);
+	ipmr_free_table(net->ipv4.mrt);
 }
 #endif
 
@@ -336,6 +339,13 @@ static struct mr_table *ipmr_new_table(struct net *net, u32 id)
 	return mrt;
 }
 
+static void ipmr_free_table(struct mr_table *mrt)
+{
+	del_timer_sync(&mrt->ipmr_expire_timer);
+	mroute_clean_tables(mrt);
+	kfree(mrt);
+}
+
 /* Service routines creating virtual interfaces: DVMRP tunnels and PIMREG */
 
 static void ipmr_del_tunnel(struct net_device *dev, struct vifctl *v)
diff --git a/net/ipv4/ping.c b/net/ipv4/ping.c
index 6232d476f37e..8f3d05424a3e 100644
--- a/net/ipv4/ping.c
+++ b/net/ipv4/ping.c
@@ -185,10 +185,10 @@ exit:
 	return sk;
 }
 
-static void inet_get_ping_group_range_net(struct net *net, gid_t *low,
-					  gid_t *high)
+static void inet_get_ping_group_range_net(struct net *net, kgid_t *low,
+					  kgid_t *high)
 {
-	gid_t *data = net->ipv4.sysctl_ping_group_range;
+	kgid_t *data = net->ipv4.sysctl_ping_group_range;
 	unsigned int seq;
 
 	do {
@@ -203,19 +203,13 @@ static void inet_get_ping_group_range_net(struct net *net, gid_t *low,
 static int ping_init_sock(struct sock *sk)
 {
 	struct net *net = sock_net(sk);
-	gid_t group = current_egid();
-	gid_t range[2];
+	kgid_t group = current_egid();
 	struct group_info *group_info = get_current_groups();
 	int i, j, count = group_info->ngroups;
 	kgid_t low, high;
 
-	inet_get_ping_group_range_net(net, range, range+1);
-	low = make_kgid(&init_user_ns, range[0]);
-	high = make_kgid(&init_user_ns, range[1]);
-	if (!gid_valid(low) || !gid_valid(high) || gid_lt(high, low))
-		return -EACCES;
-
-	if (range[0] <= group && group <= range[1])
+	inet_get_ping_group_range_net(net, &low, &high);
+	if (gid_lte(low, group) && gid_lte(group, high))
 		return 0;
 
 	for (i = 0; i < group_info->nblocks; i++) {
@@ -845,7 +839,9 @@ static void ping_format_sock(struct sock *sp, struct seq_file *f,
 		bucket, src, srcp, dest, destp, sp->sk_state,
 		sk_wmem_alloc_get(sp),
 		sk_rmem_alloc_get(sp),
-		0, 0L, 0, sock_i_uid(sp), 0, sock_i_ino(sp),
+		0, 0L, 0,
+		from_kuid_munged(seq_user_ns(f), sock_i_uid(sp)),
+		0, sock_i_ino(sp),
 		atomic_read(&sp->sk_refcnt), sp,
 		atomic_read(&sp->sk_drops), len);
 }
diff --git a/net/ipv4/proc.c b/net/ipv4/proc.c
index 957acd12250b..8de53e1ddd54 100644
--- a/net/ipv4/proc.c
+++ b/net/ipv4/proc.c
@@ -263,6 +263,10 @@ static const struct snmp_mib snmp4_net_list[] = {
 	SNMP_MIB_ITEM("TCPChallengeACK", LINUX_MIB_TCPCHALLENGEACK),
 	SNMP_MIB_ITEM("TCPSYNChallenge", LINUX_MIB_TCPSYNCHALLENGE),
 	SNMP_MIB_ITEM("TCPFastOpenActive", LINUX_MIB_TCPFASTOPENACTIVE),
+	SNMP_MIB_ITEM("TCPFastOpenPassive", LINUX_MIB_TCPFASTOPENPASSIVE),
+	SNMP_MIB_ITEM("TCPFastOpenPassiveFail", LINUX_MIB_TCPFASTOPENPASSIVEFAIL),
+	SNMP_MIB_ITEM("TCPFastOpenListenOverflow", LINUX_MIB_TCPFASTOPENLISTENOVERFLOW),
+	SNMP_MIB_ITEM("TCPFastOpenCookieReqd", LINUX_MIB_TCPFASTOPENCOOKIEREQD),
 	SNMP_MIB_SENTINEL
 };
 
diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
index ff0f071969ea..f2425785d40a 100644
--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -992,7 +992,9 @@ static void raw_sock_seq_show(struct seq_file *seq, struct sock *sp, int i)
 		i, src, srcp, dest, destp, sp->sk_state,
 		sk_wmem_alloc_get(sp),
 		sk_rmem_alloc_get(sp),
-		0, 0L, 0, sock_i_uid(sp), 0, sock_i_ino(sp),
+		0, 0L, 0,
+		from_kuid_munged(seq_user_ns(seq), sock_i_uid(sp)),
+		0, sock_i_ino(sp),
 		atomic_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops));
 }
 
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 50f6d3adb474..dc9549b5eb1c 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -934,12 +934,14 @@ static u32 __ip_rt_update_pmtu(struct rtable *rt, struct flowi4 *fl4, u32 mtu)
 	if (mtu < ip_rt_min_pmtu)
 		mtu = ip_rt_min_pmtu;
 
+	rcu_read_lock();
 	if (fib_lookup(dev_net(rt->dst.dev), fl4, &res) == 0) {
 		struct fib_nh *nh = &FIB_RES_NH(res);
 
 		update_or_create_fnhe(nh, fl4->daddr, 0, mtu,
 				      jiffies + ip_rt_mtu_expires);
 	}
+	rcu_read_unlock();
 	return mtu;
 }
 
@@ -956,7 +958,7 @@ static void ip_rt_update_pmtu(struct dst_entry *dst, struct sock *sk,
 		dst->obsolete = DST_OBSOLETE_KILL;
 	} else {
 		rt->rt_pmtu = mtu;
-		dst_set_expires(&rt->dst, ip_rt_mtu_expires);
+		rt->dst.expires = max(1UL, jiffies + ip_rt_mtu_expires);
 	}
 }
 
@@ -1132,10 +1134,7 @@ static unsigned int ipv4_mtu(const struct dst_entry *dst)
 	const struct rtable *rt = (const struct rtable *) dst;
 	unsigned int mtu = rt->rt_pmtu;
 
-	if (mtu && time_after_eq(jiffies, rt->dst.expires))
-		mtu = 0;
-
-	if (!mtu)
+	if (!mtu || time_after_eq(jiffies, rt->dst.expires))
 		mtu = dst_metric_raw(dst, RTAX_MTU);
 
 	if (mtu && rt_is_output_route(rt))
@@ -1263,7 +1262,7 @@ static void ipv4_dst_destroy(struct dst_entry *dst)
 {
 	struct rtable *rt = (struct rtable *) dst;
 
-	if (dst->flags & DST_NOCACHE) {
+	if (!list_empty(&rt->rt_uncached)) {
 		spin_lock_bh(&rt_uncached_lock);
 		list_del(&rt->rt_uncached);
 		spin_unlock_bh(&rt_uncached_lock);
diff --git a/net/ipv4/syncookies.c b/net/ipv4/syncookies.c
index 650e1528e1e6..ba48e799b031 100644
--- a/net/ipv4/syncookies.c
+++ b/net/ipv4/syncookies.c
@@ -319,6 +319,7 @@ struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb,
 	ireq->tstamp_ok		= tcp_opt.saw_tstamp;
 	req->ts_recent		= tcp_opt.saw_tstamp ? tcp_opt.rcv_tsval : 0;
 	treq->snt_synack	= tcp_opt.saw_tstamp ? tcp_opt.rcv_tsecr : 0;
+	treq->listener		= NULL;
 
 	/* We throwed the options of the initial SYN away, so we hope
 	 * the ACK carries the same options again (see RFC1122 4.2.3.8)
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index 1b5ce96707a3..9205e492dc9d 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -76,9 +76,9 @@ static int ipv4_local_port_range(ctl_table *table, int write,
 }
 
 
-static void inet_get_ping_group_range_table(struct ctl_table *table, gid_t *low, gid_t *high)
+static void inet_get_ping_group_range_table(struct ctl_table *table, kgid_t *low, kgid_t *high)
 {
-	gid_t *data = table->data;
+	kgid_t *data = table->data;
 	unsigned int seq;
 	do {
 		seq = read_seqbegin(&sysctl_local_ports.lock);
@@ -89,12 +89,12 @@ static void inet_get_ping_group_range_table(struct ctl_table *table, gid_t *low,
 }
 
 /* Update system visible IP port range */
-static void set_ping_group_range(struct ctl_table *table, gid_t range[2])
+static void set_ping_group_range(struct ctl_table *table, kgid_t low, kgid_t high)
 {
-	gid_t *data = table->data;
+	kgid_t *data = table->data;
 	write_seqlock(&sysctl_local_ports.lock);
-	data[0] = range[0];
-	data[1] = range[1];
+	data[0] = low;
+	data[1] = high;
 	write_sequnlock(&sysctl_local_ports.lock);
 }
 
@@ -103,21 +103,33 @@ static int ipv4_ping_group_range(ctl_table *table, int write,
 				 void __user *buffer,
 				 size_t *lenp, loff_t *ppos)
 {
+	struct user_namespace *user_ns = current_user_ns();
 	int ret;
-	gid_t range[2];
+	gid_t urange[2];
+	kgid_t low, high;
 	ctl_table tmp = {
-		.data = &range,
-		.maxlen = sizeof(range),
+		.data = &urange,
+		.maxlen = sizeof(urange),
 		.mode = table->mode,
 		.extra1 = &ip_ping_group_range_min,
 		.extra2 = &ip_ping_group_range_max,
 	};
 
-	inet_get_ping_group_range_table(table, range, range + 1);
+	inet_get_ping_group_range_table(table, &low, &high);
+	urange[0] = from_kgid_munged(user_ns, low);
+	urange[1] = from_kgid_munged(user_ns, high);
 	ret = proc_dointvec_minmax(&tmp, write, buffer, lenp, ppos);
 
-	if (write && ret == 0)
-		set_ping_group_range(table, range);
+	if (write && ret == 0) {
+		low = make_kgid(user_ns, urange[0]);
+		high = make_kgid(user_ns, urange[1]);
+		if (!gid_valid(low) || !gid_valid(high) ||
+		    (urange[1] < urange[0]) || gid_lt(high, low)) {
+			low = make_kgid(&init_user_ns, 1);
+			high = make_kgid(&init_user_ns, 0);
+		}
+		set_ping_group_range(table, low, high);
+	}
 
 	return ret;
 }
@@ -220,6 +232,45 @@ static int ipv4_tcp_mem(ctl_table *ctl, int write,
 	return 0;
 }
 
+int proc_tcp_fastopen_key(ctl_table *ctl, int write, void __user *buffer,
+			  size_t *lenp, loff_t *ppos)
+{
+	ctl_table tbl = { .maxlen = (TCP_FASTOPEN_KEY_LENGTH * 2 + 10) };
+	struct tcp_fastopen_context *ctxt;
+	int ret;
+	u32  user_key[4]; /* 16 bytes, matching TCP_FASTOPEN_KEY_LENGTH */
+
+	tbl.data = kmalloc(tbl.maxlen, GFP_KERNEL);
+	if (!tbl.data)
+		return -ENOMEM;
+
+	rcu_read_lock();
+	ctxt = rcu_dereference(tcp_fastopen_ctx);
+	if (ctxt)
+		memcpy(user_key, ctxt->key, TCP_FASTOPEN_KEY_LENGTH);
+	rcu_read_unlock();
+
+	snprintf(tbl.data, tbl.maxlen, "%08x-%08x-%08x-%08x",
+		user_key[0], user_key[1], user_key[2], user_key[3]);
+	ret = proc_dostring(&tbl, write, buffer, lenp, ppos);
+
+	if (write && ret == 0) {
+		if (sscanf(tbl.data, "%x-%x-%x-%x", user_key, user_key + 1,
+			   user_key + 2, user_key + 3) != 4) {
+			ret = -EINVAL;
+			goto bad_key;
+		}
+		tcp_fastopen_reset_cipher(user_key, TCP_FASTOPEN_KEY_LENGTH);
+	}
+
+bad_key:
+	pr_debug("proc FO key set 0x%x-%x-%x-%x <- 0x%s: %u\n",
+	       user_key[0], user_key[1], user_key[2], user_key[3],
+	       (char *)tbl.data, ret);
+	kfree(tbl.data);
+	return ret;
+}
+
 static struct ctl_table ipv4_table[] = {
 	{
 		.procname	= "tcp_timestamps",
@@ -374,6 +425,12 @@ static struct ctl_table ipv4_table[] = {
 		.proc_handler	= proc_dointvec,
 	},
 	{
+		.procname	= "tcp_fastopen_key",
+		.mode		= 0600,
+		.maxlen		= ((TCP_FASTOPEN_KEY_LENGTH * 2) + 10),
+		.proc_handler	= proc_tcp_fastopen_key,
+	},
+	{
 		.procname	= "tcp_tw_recycle",
 		.data		= &tcp_death_row.sysctl_tw_recycle,
 		.maxlen		= sizeof(int),
@@ -786,7 +843,7 @@ static struct ctl_table ipv4_net_table[] = {
 	{
 		.procname	= "ping_group_range",
 		.data		= &init_net.ipv4.sysctl_ping_group_range,
-		.maxlen		= sizeof(init_net.ipv4.sysctl_ping_group_range),
+		.maxlen		= sizeof(gid_t)*2,
 		.mode		= 0644,
 		.proc_handler	= ipv4_ping_group_range,
 	},
@@ -830,8 +887,8 @@ static __net_init int ipv4_sysctl_init_net(struct net *net)
 	 * Sane defaults - nobody may create ping sockets.
 	 * Boot scripts should set this to distro-specific group.
 	 */
-	net->ipv4.sysctl_ping_group_range[0] = 1;
-	net->ipv4.sysctl_ping_group_range[1] = 0;
+	net->ipv4.sysctl_ping_group_range[0] = make_kgid(&init_user_ns, 1);
+	net->ipv4.sysctl_ping_group_range[1] = make_kgid(&init_user_ns, 0);
 
 	tcp_init_mem(net);
 
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 2109ff4a1daf..df83d744e380 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -486,8 +486,9 @@ unsigned int tcp_poll(struct file *file, struct socket *sock, poll_table *wait)
 	if (sk->sk_shutdown & RCV_SHUTDOWN)
 		mask |= POLLIN | POLLRDNORM | POLLRDHUP;
 
-	/* Connected? */
-	if ((1 << sk->sk_state) & ~(TCPF_SYN_SENT | TCPF_SYN_RECV)) {
+	/* Connected or passive Fast Open socket? */
+	if (sk->sk_state != TCP_SYN_SENT &&
+	    (sk->sk_state != TCP_SYN_RECV || tp->fastopen_rsk != NULL)) {
 		int target = sock_rcvlowat(sk, 0, INT_MAX);
 
 		if (tp->urg_seq == tp->copied_seq &&
@@ -840,10 +841,15 @@ static ssize_t do_tcp_sendpages(struct sock *sk, struct page **pages, int poffse
 	ssize_t copied;
 	long timeo = sock_sndtimeo(sk, flags & MSG_DONTWAIT);
 
-	/* Wait for a connection to finish. */
-	if ((1 << sk->sk_state) & ~(TCPF_ESTABLISHED | TCPF_CLOSE_WAIT))
+	/* Wait for a connection to finish. One exception is TCP Fast Open
+	 * (passive side) where data is allowed to be sent before a connection
+	 * is fully established.
+	 */
+	if (((1 << sk->sk_state) & ~(TCPF_ESTABLISHED | TCPF_CLOSE_WAIT)) &&
+	    !tcp_passive_fastopen(sk)) {
 		if ((err = sk_stream_wait_connect(sk, &timeo)) != 0)
 			goto out_err;
+	}
 
 	clear_bit(SOCK_ASYNC_NOSPACE, &sk->sk_socket->flags);
 
@@ -1042,10 +1048,15 @@ int tcp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
 
 	timeo = sock_sndtimeo(sk, flags & MSG_DONTWAIT);
 
-	/* Wait for a connection to finish. */
-	if ((1 << sk->sk_state) & ~(TCPF_ESTABLISHED | TCPF_CLOSE_WAIT))
+	/* Wait for a connection to finish. One exception is TCP Fast Open
+	 * (passive side) where data is allowed to be sent before a connection
+	 * is fully established.
+	 */
+	if (((1 << sk->sk_state) & ~(TCPF_ESTABLISHED | TCPF_CLOSE_WAIT)) &&
+	    !tcp_passive_fastopen(sk)) {
 		if ((err = sk_stream_wait_connect(sk, &timeo)) != 0)
 			goto do_error;
+	}
 
 	if (unlikely(tp->repair)) {
 		if (tp->repair_queue == TCP_RECV_QUEUE) {
@@ -2144,6 +2155,10 @@ void tcp_close(struct sock *sk, long timeout)
 		 * they look as CLOSING or LAST_ACK for Linux)
 		 * Probably, I missed some more holelets.
 		 * 						--ANK
+		 * XXX (TFO) - To start off we don't support SYN+ACK+FIN
+		 * in a single packet! (May consider it later but will
+		 * probably need API support or TCP_CORK SYN-ACK until
+		 * data is written and socket is closed.)
 		 */
 		tcp_send_fin(sk);
 	}
@@ -2215,8 +2230,16 @@ adjudge_to_death:
 		}
 	}
 
-	if (sk->sk_state == TCP_CLOSE)
+	if (sk->sk_state == TCP_CLOSE) {
+		struct request_sock *req = tcp_sk(sk)->fastopen_rsk;
+		/* We could get here with a non-NULL req if the socket is
+		 * aborted (e.g., closed with unread data) before 3WHS
+		 * finishes.
+		 */
+		if (req != NULL)
+			reqsk_fastopen_remove(sk, req, false);
 		inet_csk_destroy_sock(sk);
+	}
 	/* Otherwise, socket is reprieved until protocol close. */
 
 out:
@@ -2688,6 +2711,14 @@ static int do_tcp_setsockopt(struct sock *sk, int level,
 		else
 			icsk->icsk_user_timeout = msecs_to_jiffies(val);
 		break;
+
+	case TCP_FASTOPEN:
+		if (val >= 0 && ((1 << sk->sk_state) & (TCPF_CLOSE |
+		    TCPF_LISTEN)))
+			err = fastopen_init_queue(sk, val);
+		else
+			err = -EINVAL;
+		break;
 	default:
 		err = -ENOPROTOOPT;
 		break;
@@ -3501,11 +3532,15 @@ EXPORT_SYMBOL(tcp_cookie_generator);
 
 void tcp_done(struct sock *sk)
 {
+	struct request_sock *req = tcp_sk(sk)->fastopen_rsk;
+
 	if (sk->sk_state == TCP_SYN_SENT || sk->sk_state == TCP_SYN_RECV)
 		TCP_INC_STATS_BH(sock_net(sk), TCP_MIB_ATTEMPTFAILS);
 
 	tcp_set_state(sk, TCP_CLOSE);
 	tcp_clear_xmit_timers(sk);
+	if (req != NULL)
+		reqsk_fastopen_remove(sk, req, false);
 
 	sk->sk_shutdown = SHUTDOWN_MASK;
 
diff --git a/net/ipv4/tcp_fastopen.c b/net/ipv4/tcp_fastopen.c
index a7f729c409d7..8f7ef0ad80e5 100644
--- a/net/ipv4/tcp_fastopen.c
+++ b/net/ipv4/tcp_fastopen.c
@@ -1,10 +1,91 @@
+#include <linux/err.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/tcp.h>
+#include <linux/rcupdate.h>
+#include <linux/rculist.h>
+#include <net/inetpeer.h>
+#include <net/tcp.h>
 
-int sysctl_tcp_fastopen;
+int sysctl_tcp_fastopen __read_mostly;
+
+struct tcp_fastopen_context __rcu *tcp_fastopen_ctx;
+
+static DEFINE_SPINLOCK(tcp_fastopen_ctx_lock);
+
+static void tcp_fastopen_ctx_free(struct rcu_head *head)
+{
+	struct tcp_fastopen_context *ctx =
+	    container_of(head, struct tcp_fastopen_context, rcu);
+	crypto_free_cipher(ctx->tfm);
+	kfree(ctx);
+}
+
+int tcp_fastopen_reset_cipher(void *key, unsigned int len)
+{
+	int err;
+	struct tcp_fastopen_context *ctx, *octx;
+
+	ctx = kmalloc(sizeof(*ctx), GFP_KERNEL);
+	if (!ctx)
+		return -ENOMEM;
+	ctx->tfm = crypto_alloc_cipher("aes", 0, 0);
+
+	if (IS_ERR(ctx->tfm)) {
+		err = PTR_ERR(ctx->tfm);
+error:		kfree(ctx);
+		pr_err("TCP: TFO aes cipher alloc error: %d\n", err);
+		return err;
+	}
+	err = crypto_cipher_setkey(ctx->tfm, key, len);
+	if (err) {
+		pr_err("TCP: TFO cipher key error: %d\n", err);
+		crypto_free_cipher(ctx->tfm);
+		goto error;
+	}
+	memcpy(ctx->key, key, len);
+
+	spin_lock(&tcp_fastopen_ctx_lock);
+
+	octx = rcu_dereference_protected(tcp_fastopen_ctx,
+				lockdep_is_held(&tcp_fastopen_ctx_lock));
+	rcu_assign_pointer(tcp_fastopen_ctx, ctx);
+	spin_unlock(&tcp_fastopen_ctx_lock);
+
+	if (octx)
+		call_rcu(&octx->rcu, tcp_fastopen_ctx_free);
+	return err;
+}
+
+/* Computes the fastopen cookie for the peer.
+ * The peer address is a 128 bits long (pad with zeros for IPv4).
+ *
+ * The caller must check foc->len to determine if a valid cookie
+ * has been generated successfully.
+*/
+void tcp_fastopen_cookie_gen(__be32 addr, struct tcp_fastopen_cookie *foc)
+{
+	__be32 peer_addr[4] = { addr, 0, 0, 0 };
+	struct tcp_fastopen_context *ctx;
+
+	rcu_read_lock();
+	ctx = rcu_dereference(tcp_fastopen_ctx);
+	if (ctx) {
+		crypto_cipher_encrypt_one(ctx->tfm,
+					  foc->val,
+					  (__u8 *)peer_addr);
+		foc->len = TCP_FASTOPEN_COOKIE_SIZE;
+	}
+	rcu_read_unlock();
+}
 
 static int __init tcp_fastopen_init(void)
 {
+	__u8 key[TCP_FASTOPEN_KEY_LENGTH];
+
+	get_random_bytes(key, sizeof(key));
+	tcp_fastopen_reset_cipher(key, sizeof(key));
 	return 0;
 }
 
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index bcfccc5cb8d0..8c304a400798 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -378,7 +378,7 @@ static void tcp_fixup_rcvbuf(struct sock *sk)
 /* 4. Try to fixup all. It is made immediately after connection enters
  *    established state.
  */
-static void tcp_init_buffer_space(struct sock *sk)
+void tcp_init_buffer_space(struct sock *sk)
 {
 	struct tcp_sock *tp = tcp_sk(sk);
 	int maxwin;
@@ -2930,13 +2930,14 @@ static void tcp_enter_recovery(struct sock *sk, bool ece_ack)
  * tcp_xmit_retransmit_queue().
  */
 static void tcp_fastretrans_alert(struct sock *sk, int pkts_acked,
-				  int newly_acked_sacked, bool is_dupack,
+				  int prior_sacked, bool is_dupack,
 				  int flag)
 {
 	struct inet_connection_sock *icsk = inet_csk(sk);
 	struct tcp_sock *tp = tcp_sk(sk);
 	int do_lost = is_dupack || ((flag & FLAG_DATA_SACKED) &&
 				    (tcp_fackets_out(tp) > tp->reordering));
+	int newly_acked_sacked = 0;
 	int fast_rexmit = 0;
 
 	if (WARN_ON(!tp->packets_out && tp->sacked_out))
@@ -2996,6 +2997,7 @@ static void tcp_fastretrans_alert(struct sock *sk, int pkts_acked,
 				tcp_add_reno_sack(sk);
 		} else
 			do_lost = tcp_try_undo_partial(sk, pkts_acked);
+		newly_acked_sacked = pkts_acked + tp->sacked_out - prior_sacked;
 		break;
 	case TCP_CA_Loss:
 		if (flag & FLAG_DATA_ACKED)
@@ -3017,6 +3019,7 @@ static void tcp_fastretrans_alert(struct sock *sk, int pkts_acked,
 			if (is_dupack)
 				tcp_add_reno_sack(sk);
 		}
+		newly_acked_sacked = pkts_acked + tp->sacked_out - prior_sacked;
 
 		if (icsk->icsk_ca_state <= TCP_CA_Disorder)
 			tcp_try_undo_dsack(sk);
@@ -3124,6 +3127,12 @@ void tcp_rearm_rto(struct sock *sk)
 {
 	struct tcp_sock *tp = tcp_sk(sk);
 
+	/* If the retrans timer is currently being used by Fast Open
+	 * for SYN-ACK retrans purpose, stay put.
+	 */
+	if (tp->fastopen_rsk)
+		return;
+
 	if (!tp->packets_out) {
 		inet_csk_clear_xmit_timer(sk, ICSK_TIME_RETRANS);
 	} else {
@@ -3594,7 +3603,6 @@ static int tcp_ack(struct sock *sk, const struct sk_buff *skb, int flag)
 	int prior_packets;
 	int prior_sacked = tp->sacked_out;
 	int pkts_acked = 0;
-	int newly_acked_sacked = 0;
 	bool frto_cwnd = false;
 
 	/* If the ack is older than previous acks
@@ -3670,8 +3678,6 @@ static int tcp_ack(struct sock *sk, const struct sk_buff *skb, int flag)
 	flag |= tcp_clean_rtx_queue(sk, prior_fackets, prior_snd_una);
 
 	pkts_acked = prior_packets - tp->packets_out;
-	newly_acked_sacked = (prior_packets - prior_sacked) -
-			     (tp->packets_out - tp->sacked_out);
 
 	if (tp->frto_counter)
 		frto_cwnd = tcp_process_frto(sk, flag);
@@ -3685,7 +3691,7 @@ static int tcp_ack(struct sock *sk, const struct sk_buff *skb, int flag)
 		    tcp_may_raise_cwnd(sk, flag))
 			tcp_cong_avoid(sk, ack, prior_in_flight);
 		is_dupack = !(flag & (FLAG_SND_UNA_ADVANCED | FLAG_NOT_DUP));
-		tcp_fastretrans_alert(sk, pkts_acked, newly_acked_sacked,
+		tcp_fastretrans_alert(sk, pkts_acked, prior_sacked,
 				      is_dupack, flag);
 	} else {
 		if ((flag & FLAG_DATA_ACKED) && !frto_cwnd)
@@ -3702,7 +3708,7 @@ static int tcp_ack(struct sock *sk, const struct sk_buff *skb, int flag)
 no_queue:
 	/* If data was DSACKed, see if we can undo a cwnd reduction. */
 	if (flag & FLAG_DSACKING_ACK)
-		tcp_fastretrans_alert(sk, pkts_acked, newly_acked_sacked,
+		tcp_fastretrans_alert(sk, pkts_acked, prior_sacked,
 				      is_dupack, flag);
 	/* If this ack opens up a zero window, clear backoff.  It was
 	 * being used to time the probes, and is probably far higher than
@@ -3722,8 +3728,7 @@ old_ack:
 	 */
 	if (TCP_SKB_CB(skb)->sacked) {
 		flag |= tcp_sacktag_write_queue(sk, skb, prior_snd_una);
-		newly_acked_sacked = tp->sacked_out - prior_sacked;
-		tcp_fastretrans_alert(sk, pkts_acked, newly_acked_sacked,
+		tcp_fastretrans_alert(sk, pkts_acked, prior_sacked,
 				      is_dupack, flag);
 	}
 
@@ -4039,7 +4044,7 @@ static inline bool tcp_sequence(const struct tcp_sock *tp, u32 seq, u32 end_seq)
 }
 
 /* When we get a reset we do this. */
-static void tcp_reset(struct sock *sk)
+void tcp_reset(struct sock *sk)
 {
 	/* We want the right error as BSD sees it (and indeed as we do). */
 	switch (sk->sk_state) {
@@ -5896,7 +5901,9 @@ discard:
 		tcp_send_synack(sk);
 #if 0
 		/* Note, we could accept data and URG from this segment.
-		 * There are no obstacles to make this.
+		 * There are no obstacles to make this (except that we must
+		 * either change tcp_recvmsg() to prevent it from returning data
+		 * before 3WHS completes per RFC793, or employ TCP Fast Open).
 		 *
 		 * However, if we ignore data in ACKless segments sometimes,
 		 * we have no reasons to accept it sometimes.
@@ -5936,6 +5943,7 @@ int tcp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
 {
 	struct tcp_sock *tp = tcp_sk(sk);
 	struct inet_connection_sock *icsk = inet_csk(sk);
+	struct request_sock *req;
 	int queued = 0;
 
 	tp->rx_opt.saw_tstamp = 0;
@@ -5991,7 +5999,14 @@ int tcp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
 		return 0;
 	}
 
-	if (!tcp_validate_incoming(sk, skb, th, 0))
+	req = tp->fastopen_rsk;
+	if (req != NULL) {
+		BUG_ON(sk->sk_state != TCP_SYN_RECV &&
+		    sk->sk_state != TCP_FIN_WAIT1);
+
+		if (tcp_check_req(sk, skb, req, NULL, true) == NULL)
+			goto discard;
+	} else if (!tcp_validate_incoming(sk, skb, th, 0))
 		return 0;
 
 	/* step 5: check the ACK field */
@@ -6001,7 +6016,22 @@ int tcp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
 		switch (sk->sk_state) {
 		case TCP_SYN_RECV:
 			if (acceptable) {
-				tp->copied_seq = tp->rcv_nxt;
+				/* Once we leave TCP_SYN_RECV, we no longer
+				 * need req so release it.
+				 */
+				if (req) {
+					reqsk_fastopen_remove(sk, req, false);
+				} else {
+					/* Make sure socket is routed, for
+					 * correct metrics.
+					 */
+					icsk->icsk_af_ops->rebuild_header(sk);
+					tcp_init_congestion_control(sk);
+
+					tcp_mtup_init(sk);
+					tcp_init_buffer_space(sk);
+					tp->copied_seq = tp->rcv_nxt;
+				}
 				smp_mb();
 				tcp_set_state(sk, TCP_ESTABLISHED);
 				sk->sk_state_change(sk);
@@ -6023,23 +6053,27 @@ int tcp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
 				if (tp->rx_opt.tstamp_ok)
 					tp->advmss -= TCPOLEN_TSTAMP_ALIGNED;
 
-				/* Make sure socket is routed, for
-				 * correct metrics.
-				 */
-				icsk->icsk_af_ops->rebuild_header(sk);
-
-				tcp_init_metrics(sk);
-
-				tcp_init_congestion_control(sk);
+				if (req) {
+					/* Re-arm the timer because data may
+					 * have been sent out. This is similar
+					 * to the regular data transmission case
+					 * when new data has just been ack'ed.
+					 *
+					 * (TFO) - we could try to be more
+					 * aggressive and retranmitting any data
+					 * sooner based on when they were sent
+					 * out.
+					 */
+					tcp_rearm_rto(sk);
+				} else
+					tcp_init_metrics(sk);
 
 				/* Prevent spurious tcp_cwnd_restart() on
 				 * first data packet.
 				 */
 				tp->lsndtime = tcp_time_stamp;
 
-				tcp_mtup_init(sk);
 				tcp_initialize_rcv_mss(sk);
-				tcp_init_buffer_space(sk);
 				tcp_fast_path_on(tp);
 			} else {
 				return 1;
@@ -6047,6 +6081,16 @@ int tcp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
 			break;
 
 		case TCP_FIN_WAIT1:
+			/* If we enter the TCP_FIN_WAIT1 state and we are a
+			 * Fast Open socket and this is the first acceptable
+			 * ACK we have received, this would have acknowledged
+			 * our SYNACK so stop the SYNACK timer.
+			 */
+			if (acceptable && req != NULL) {
+				/* We no longer need the request sock. */
+				reqsk_fastopen_remove(sk, req, false);
+				tcp_rearm_rto(sk);
+			}
 			if (tp->snd_una == tp->write_seq) {
 				struct dst_entry *dst;
 
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 1e15c5be04e7..e64abed249cc 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -352,6 +352,7 @@ void tcp_v4_err(struct sk_buff *icmp_skb, u32 info)
 	const int code = icmp_hdr(icmp_skb)->code;
 	struct sock *sk;
 	struct sk_buff *skb;
+	struct request_sock *req;
 	__u32 seq;
 	__u32 remaining;
 	int err;
@@ -394,9 +395,12 @@ void tcp_v4_err(struct sk_buff *icmp_skb, u32 info)
 
 	icsk = inet_csk(sk);
 	tp = tcp_sk(sk);
+	req = tp->fastopen_rsk;
 	seq = ntohl(th->seq);
 	if (sk->sk_state != TCP_LISTEN &&
-	    !between(seq, tp->snd_una, tp->snd_nxt)) {
+	    !between(seq, tp->snd_una, tp->snd_nxt) &&
+	    (req == NULL || seq != tcp_rsk(req)->snt_isn)) {
+		/* For a Fast Open socket, allow seq to be snt_isn. */
 		NET_INC_STATS_BH(net, LINUX_MIB_OUTOFWINDOWICMPS);
 		goto out;
 	}
@@ -435,6 +439,8 @@ void tcp_v4_err(struct sk_buff *icmp_skb, u32 info)
 		    !icsk->icsk_backoff)
 			break;
 
+		/* XXX (TFO) - revisit the following logic for TFO */
+
 		if (sock_owned_by_user(sk))
 			break;
 
@@ -466,6 +472,14 @@ void tcp_v4_err(struct sk_buff *icmp_skb, u32 info)
 		goto out;
 	}
 
+	/* XXX (TFO) - if it's a TFO socket and has been accepted, rather
+	 * than following the TCP_SYN_RECV case and closing the socket,
+	 * we ignore the ICMP error and keep trying like a fully established
+	 * socket. Is this the right thing to do?
+	 */
+	if (req && req->sk == NULL)
+		goto out;
+
 	switch (sk->sk_state) {
 		struct request_sock *req, **prev;
 	case TCP_LISTEN:
@@ -498,7 +512,8 @@ void tcp_v4_err(struct sk_buff *icmp_skb, u32 info)
 
 	case TCP_SYN_SENT:
 	case TCP_SYN_RECV:  /* Cannot happen.
-			       It can f.e. if SYNs crossed.
+			       It can f.e. if SYNs crossed,
+			       or Fast Open.
 			     */
 		if (!sock_owned_by_user(sk)) {
 			sk->sk_err = err;
@@ -809,8 +824,12 @@ static void tcp_v4_timewait_ack(struct sock *sk, struct sk_buff *skb)
 static void tcp_v4_reqsk_send_ack(struct sock *sk, struct sk_buff *skb,
 				  struct request_sock *req)
 {
-	tcp_v4_send_ack(skb, tcp_rsk(req)->snt_isn + 1,
-			tcp_rsk(req)->rcv_isn + 1, req->rcv_wnd,
+	/* sk->sk_state == TCP_LISTEN -> for regular TCP_SYN_RECV
+	 * sk->sk_state == TCP_SYN_RECV -> for Fast Open.
+	 */
+	tcp_v4_send_ack(skb, (sk->sk_state == TCP_LISTEN) ?
+			tcp_rsk(req)->snt_isn + 1 : tcp_sk(sk)->snd_nxt,
+			tcp_rsk(req)->rcv_nxt, req->rcv_wnd,
 			req->ts_recent,
 			0,
 			tcp_md5_do_lookup(sk, (union tcp_md5_addr *)&ip_hdr(skb)->daddr,
@@ -839,7 +858,7 @@ static int tcp_v4_send_synack(struct sock *sk, struct dst_entry *dst,
 	if (!dst && (dst = inet_csk_route_req(sk, &fl4, req)) == NULL)
 		return -1;
 
-	skb = tcp_make_synack(sk, dst, req, rvp);
+	skb = tcp_make_synack(sk, dst, req, rvp, NULL);
 
 	if (skb) {
 		__tcp_v4_send_check(skb, ireq->loc_addr, ireq->rmt_addr);
@@ -1272,6 +1291,178 @@ static const struct tcp_request_sock_ops tcp_request_sock_ipv4_ops = {
 };
 #endif
 
+static bool tcp_fastopen_check(struct sock *sk, struct sk_buff *skb,
+			       struct request_sock *req,
+			       struct tcp_fastopen_cookie *foc,
+			       struct tcp_fastopen_cookie *valid_foc)
+{
+	bool skip_cookie = false;
+	struct fastopen_queue *fastopenq;
+
+	if (likely(!fastopen_cookie_present(foc))) {
+		/* See include/net/tcp.h for the meaning of these knobs */
+		if ((sysctl_tcp_fastopen & TFO_SERVER_ALWAYS) ||
+		    ((sysctl_tcp_fastopen & TFO_SERVER_COOKIE_NOT_REQD) &&
+		    (TCP_SKB_CB(skb)->end_seq != TCP_SKB_CB(skb)->seq + 1)))
+			skip_cookie = true; /* no cookie to validate */
+		else
+			return false;
+	}
+	fastopenq = inet_csk(sk)->icsk_accept_queue.fastopenq;
+	/* A FO option is present; bump the counter. */
+	NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPFASTOPENPASSIVE);
+
+	/* Make sure the listener has enabled fastopen, and we don't
+	 * exceed the max # of pending TFO requests allowed before trying
+	 * to validating the cookie in order to avoid burning CPU cycles
+	 * unnecessarily.
+	 *
+	 * XXX (TFO) - The implication of checking the max_qlen before
+	 * processing a cookie request is that clients can't differentiate
+	 * between qlen overflow causing Fast Open to be disabled
+	 * temporarily vs a server not supporting Fast Open at all.
+	 */
+	if ((sysctl_tcp_fastopen & TFO_SERVER_ENABLE) == 0 ||
+	    fastopenq == NULL || fastopenq->max_qlen == 0)
+		return false;
+
+	if (fastopenq->qlen >= fastopenq->max_qlen) {
+		struct request_sock *req1;
+		spin_lock(&fastopenq->lock);
+		req1 = fastopenq->rskq_rst_head;
+		if ((req1 == NULL) || time_after(req1->expires, jiffies)) {
+			spin_unlock(&fastopenq->lock);
+			NET_INC_STATS_BH(sock_net(sk),
+			    LINUX_MIB_TCPFASTOPENLISTENOVERFLOW);
+			/* Avoid bumping LINUX_MIB_TCPFASTOPENPASSIVEFAIL*/
+			foc->len = -1;
+			return false;
+		}
+		fastopenq->rskq_rst_head = req1->dl_next;
+		fastopenq->qlen--;
+		spin_unlock(&fastopenq->lock);
+		reqsk_free(req1);
+	}
+	if (skip_cookie) {
+		tcp_rsk(req)->rcv_nxt = TCP_SKB_CB(skb)->end_seq;
+		return true;
+	}
+	if (foc->len == TCP_FASTOPEN_COOKIE_SIZE) {
+		if ((sysctl_tcp_fastopen & TFO_SERVER_COOKIE_NOT_CHKED) == 0) {
+			tcp_fastopen_cookie_gen(ip_hdr(skb)->saddr, valid_foc);
+			if ((valid_foc->len != TCP_FASTOPEN_COOKIE_SIZE) ||
+			    memcmp(&foc->val[0], &valid_foc->val[0],
+			    TCP_FASTOPEN_COOKIE_SIZE) != 0)
+				return false;
+			valid_foc->len = -1;
+		}
+		/* Acknowledge the data received from the peer. */
+		tcp_rsk(req)->rcv_nxt = TCP_SKB_CB(skb)->end_seq;
+		return true;
+	} else if (foc->len == 0) { /* Client requesting a cookie */
+		tcp_fastopen_cookie_gen(ip_hdr(skb)->saddr, valid_foc);
+		NET_INC_STATS_BH(sock_net(sk),
+		    LINUX_MIB_TCPFASTOPENCOOKIEREQD);
+	} else {
+		/* Client sent a cookie with wrong size. Treat it
+		 * the same as invalid and return a valid one.
+		 */
+		tcp_fastopen_cookie_gen(ip_hdr(skb)->saddr, valid_foc);
+	}
+	return false;
+}
+
+static int tcp_v4_conn_req_fastopen(struct sock *sk,
+				    struct sk_buff *skb,
+				    struct sk_buff *skb_synack,
+				    struct request_sock *req,
+				    struct request_values *rvp)
+{
+	struct tcp_sock *tp = tcp_sk(sk);
+	struct request_sock_queue *queue = &inet_csk(sk)->icsk_accept_queue;
+	const struct inet_request_sock *ireq = inet_rsk(req);
+	struct sock *child;
+
+	req->retrans = 0;
+	req->sk = NULL;
+
+	child = inet_csk(sk)->icsk_af_ops->syn_recv_sock(sk, skb, req, NULL);
+	if (child == NULL) {
+		NET_INC_STATS_BH(sock_net(sk),
+				 LINUX_MIB_TCPFASTOPENPASSIVEFAIL);
+		kfree_skb(skb_synack);
+		return -1;
+	}
+	ip_build_and_send_pkt(skb_synack, sk, ireq->loc_addr,
+			ireq->rmt_addr, ireq->opt);
+	/* XXX (TFO) - is it ok to ignore error and continue? */
+
+	spin_lock(&queue->fastopenq->lock);
+	queue->fastopenq->qlen++;
+	spin_unlock(&queue->fastopenq->lock);
+
+	/* Initialize the child socket. Have to fix some values to take
+	 * into account the child is a Fast Open socket and is created
+	 * only out of the bits carried in the SYN packet.
+	 */
+	tp = tcp_sk(child);
+
+	tp->fastopen_rsk = req;
+	/* Do a hold on the listner sk so that if the listener is being
+	 * closed, the child that has been accepted can live on and still
+	 * access listen_lock.
+	 */
+	sock_hold(sk);
+	tcp_rsk(req)->listener = sk;
+
+	/* RFC1323: The window in SYN & SYN/ACK segments is never
+	 * scaled. So correct it appropriately.
+	 */
+	tp->snd_wnd = ntohs(tcp_hdr(skb)->window);
+
+	/* Activate the retrans timer so that SYNACK can be retransmitted.
+	 * The request socket is not added to the SYN table of the parent
+	 * because it's been added to the accept queue directly.
+	 */
+	inet_csk_reset_xmit_timer(child, ICSK_TIME_RETRANS,
+	    TCP_TIMEOUT_INIT, TCP_RTO_MAX);
+
+	/* Add the child socket directly into the accept queue */
+	inet_csk_reqsk_queue_add(sk, req, child);
+
+	/* Now finish processing the fastopen child socket. */
+	inet_csk(child)->icsk_af_ops->rebuild_header(child);
+	tcp_init_congestion_control(child);
+	tcp_mtup_init(child);
+	tcp_init_buffer_space(child);
+	tcp_init_metrics(child);
+
+	/* Queue the data carried in the SYN packet. We need to first
+	 * bump skb's refcnt because the caller will attempt to free it.
+	 *
+	 * XXX (TFO) - we honor a zero-payload TFO request for now.
+	 * (Any reason not to?)
+	 */
+	if (TCP_SKB_CB(skb)->end_seq == TCP_SKB_CB(skb)->seq + 1) {
+		/* Don't queue the skb if there is no payload in SYN.
+		 * XXX (TFO) - How about SYN+FIN?
+		 */
+		tp->rcv_nxt = TCP_SKB_CB(skb)->end_seq;
+	} else {
+		skb = skb_get(skb);
+		skb_dst_drop(skb);
+		__skb_pull(skb, tcp_hdr(skb)->doff * 4);
+		skb_set_owner_r(skb, child);
+		__skb_queue_tail(&child->sk_receive_queue, skb);
+		tp->rcv_nxt = TCP_SKB_CB(skb)->end_seq;
+	}
+	sk->sk_data_ready(sk, 0);
+	bh_unlock_sock(child);
+	sock_put(child);
+	WARN_ON(req->sk == NULL);
+	return 0;
+}
+
 int tcp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
 {
 	struct tcp_extend_values tmp_ext;
@@ -1285,6 +1476,11 @@ int tcp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
 	__be32 daddr = ip_hdr(skb)->daddr;
 	__u32 isn = TCP_SKB_CB(skb)->when;
 	bool want_cookie = false;
+	struct flowi4 fl4;
+	struct tcp_fastopen_cookie foc = { .len = -1 };
+	struct tcp_fastopen_cookie valid_foc = { .len = -1 };
+	struct sk_buff *skb_synack;
+	int do_fastopen;
 
 	/* Never answer to SYNs send to broadcast or multicast */
 	if (skb_rtable(skb)->rt_flags & (RTCF_BROADCAST | RTCF_MULTICAST))
@@ -1319,7 +1515,8 @@ int tcp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
 	tcp_clear_options(&tmp_opt);
 	tmp_opt.mss_clamp = TCP_MSS_DEFAULT;
 	tmp_opt.user_mss  = tp->rx_opt.user_mss;
-	tcp_parse_options(skb, &tmp_opt, &hash_location, 0, NULL);
+	tcp_parse_options(skb, &tmp_opt, &hash_location, 0,
+	    want_cookie ? NULL : &foc);
 
 	if (tmp_opt.cookie_plus > 0 &&
 	    tmp_opt.saw_tstamp &&
@@ -1377,8 +1574,6 @@ int tcp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
 		isn = cookie_v4_init_sequence(sk, skb, &req->mss);
 		req->cookie_ts = tmp_opt.tstamp_ok;
 	} else if (!isn) {
-		struct flowi4 fl4;
-
 		/* VJ's idea. We save last timestamp seen
 		 * from the destination in peer table, when entering
 		 * state TIME-WAIT, and check against it before
@@ -1419,14 +1614,52 @@ int tcp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
 	tcp_rsk(req)->snt_isn = isn;
 	tcp_rsk(req)->snt_synack = tcp_time_stamp;
 
-	if (tcp_v4_send_synack(sk, dst, req,
-			       (struct request_values *)&tmp_ext,
-			       skb_get_queue_mapping(skb),
-			       want_cookie) ||
-	    want_cookie)
+	if (dst == NULL) {
+		dst = inet_csk_route_req(sk, &fl4, req);
+		if (dst == NULL)
+			goto drop_and_free;
+	}
+	do_fastopen = tcp_fastopen_check(sk, skb, req, &foc, &valid_foc);
+
+	/* We don't call tcp_v4_send_synack() directly because we need
+	 * to make sure a child socket can be created successfully before
+	 * sending back synack!
+	 *
+	 * XXX (TFO) - Ideally one would simply call tcp_v4_send_synack()
+	 * (or better yet, call tcp_send_synack() in the child context
+	 * directly, but will have to fix bunch of other code first)
+	 * after syn_recv_sock() except one will need to first fix the
+	 * latter to remove its dependency on the current implementation
+	 * of tcp_v4_send_synack()->tcp_select_initial_window().
+	 */
+	skb_synack = tcp_make_synack(sk, dst, req,
+	    (struct request_values *)&tmp_ext,
+	    fastopen_cookie_present(&valid_foc) ? &valid_foc : NULL);
+
+	if (skb_synack) {
+		__tcp_v4_send_check(skb_synack, ireq->loc_addr, ireq->rmt_addr);
+		skb_set_queue_mapping(skb_synack, skb_get_queue_mapping(skb));
+	} else
+		goto drop_and_free;
+
+	if (likely(!do_fastopen)) {
+		int err;
+		err = ip_build_and_send_pkt(skb_synack, sk, ireq->loc_addr,
+		     ireq->rmt_addr, ireq->opt);
+		err = net_xmit_eval(err);
+		if (err || want_cookie)
+			goto drop_and_free;
+
+		tcp_rsk(req)->listener = NULL;
+		/* Add the request_sock to the SYN table */
+		inet_csk_reqsk_queue_hash_add(sk, req, TCP_TIMEOUT_INIT);
+		if (fastopen_cookie_present(&foc) && foc.len != 0)
+			NET_INC_STATS_BH(sock_net(sk),
+			    LINUX_MIB_TCPFASTOPENPASSIVEFAIL);
+	} else if (tcp_v4_conn_req_fastopen(sk, skb, skb_synack, req,
+	    (struct request_values *)&tmp_ext))
 		goto drop_and_free;
 
-	inet_csk_reqsk_queue_hash_add(sk, req, TCP_TIMEOUT_INIT);
 	return 0;
 
 drop_and_release:
@@ -1554,7 +1787,7 @@ static struct sock *tcp_v4_hnd_req(struct sock *sk, struct sk_buff *skb)
 	struct request_sock *req = inet_csk_search_req(sk, &prev, th->source,
 						       iph->saddr, iph->daddr);
 	if (req)
-		return tcp_check_req(sk, skb, req, prev);
+		return tcp_check_req(sk, skb, req, prev, false);
 
 	nsk = inet_lookup_established(sock_net(sk), &tcp_hashinfo, iph->saddr,
 			th->source, iph->daddr, th->dest, inet_iif(skb));
@@ -1977,6 +2210,7 @@ void tcp_v4_destroy_sock(struct sock *sk)
 			 tcp_cookie_values_release);
 		tp->cookie_values = NULL;
 	}
+	BUG_ON(tp->fastopen_rsk != NULL);
 
 	/* If socket is aborted during connect operation */
 	tcp_free_fastopen_req(tp);
@@ -2393,7 +2627,7 @@ void tcp_proc_unregister(struct net *net, struct tcp_seq_afinfo *afinfo)
 EXPORT_SYMBOL(tcp_proc_unregister);
 
 static void get_openreq4(const struct sock *sk, const struct request_sock *req,
-			 struct seq_file *f, int i, int uid, int *len)
+			 struct seq_file *f, int i, kuid_t uid, int *len)
 {
 	const struct inet_request_sock *ireq = inet_rsk(req);
 	long delta = req->expires - jiffies;
@@ -2410,7 +2644,7 @@ static void get_openreq4(const struct sock *sk, const struct request_sock *req,
 		1,    /* timers active (only the expire timer) */
 		jiffies_delta_to_clock_t(delta),
 		req->retrans,
-		uid,
+		from_kuid_munged(seq_user_ns(f), uid),
 		0,  /* non standard timer */
 		0, /* open_requests have no inode */
 		atomic_read(&sk->sk_refcnt),
@@ -2425,6 +2659,7 @@ static void get_tcp4_sock(struct sock *sk, struct seq_file *f, int i, int *len)
 	const struct tcp_sock *tp = tcp_sk(sk);
 	const struct inet_connection_sock *icsk = inet_csk(sk);
 	const struct inet_sock *inet = inet_sk(sk);
+	struct fastopen_queue *fastopenq = icsk->icsk_accept_queue.fastopenq;
 	__be32 dest = inet->inet_daddr;
 	__be32 src = inet->inet_rcv_saddr;
 	__u16 destp = ntohs(inet->inet_dport);
@@ -2461,7 +2696,7 @@ static void get_tcp4_sock(struct sock *sk, struct seq_file *f, int i, int *len)
 		timer_active,
 		jiffies_delta_to_clock_t(timer_expires - jiffies),
 		icsk->icsk_retransmits,
-		sock_i_uid(sk),
+		from_kuid_munged(seq_user_ns(f), sock_i_uid(sk)),
 		icsk->icsk_probes_out,
 		sock_i_ino(sk),
 		atomic_read(&sk->sk_refcnt), sk,
@@ -2469,7 +2704,9 @@ static void get_tcp4_sock(struct sock *sk, struct seq_file *f, int i, int *len)
 		jiffies_to_clock_t(icsk->icsk_ack.ato),
 		(icsk->icsk_ack.quick << 1) | icsk->icsk_ack.pingpong,
 		tp->snd_cwnd,
-		tcp_in_initial_slowstart(tp) ? -1 : tp->snd_ssthresh,
+		sk->sk_state == TCP_LISTEN ?
+		    (fastopenq ? fastopenq->max_qlen : 0) :
+		    (tcp_in_initial_slowstart(tp) ? -1 : tp->snd_ssthresh),
 		len);
 }
 
diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c
index 6ff7f10dce9d..e965319d610b 100644
--- a/net/ipv4/tcp_minisocks.c
+++ b/net/ipv4/tcp_minisocks.c
@@ -507,6 +507,7 @@ struct sock *tcp_create_openreq_child(struct sock *sk, struct request_sock *req,
 			newicsk->icsk_ack.last_seg_size = skb->len - newtp->tcp_header_len;
 		newtp->rx_opt.mss_clamp = req->mss;
 		TCP_ECN_openreq_child(newtp, req);
+		newtp->fastopen_rsk = NULL;
 
 		TCP_INC_STATS_BH(sock_net(sk), TCP_MIB_PASSIVEOPENS);
 	}
@@ -515,13 +516,18 @@ struct sock *tcp_create_openreq_child(struct sock *sk, struct request_sock *req,
 EXPORT_SYMBOL(tcp_create_openreq_child);
 
 /*
- *	Process an incoming packet for SYN_RECV sockets represented
- *	as a request_sock.
+ * Process an incoming packet for SYN_RECV sockets represented as a
+ * request_sock. Normally sk is the listener socket but for TFO it
+ * points to the child socket.
+ *
+ * XXX (TFO) - The current impl contains a special check for ack
+ * validation and inside tcp_v4_reqsk_send_ack(). Can we do better?
  */
 
 struct sock *tcp_check_req(struct sock *sk, struct sk_buff *skb,
 			   struct request_sock *req,
-			   struct request_sock **prev)
+			   struct request_sock **prev,
+			   bool fastopen)
 {
 	struct tcp_options_received tmp_opt;
 	const u8 *hash_location;
@@ -530,6 +536,8 @@ struct sock *tcp_check_req(struct sock *sk, struct sk_buff *skb,
 	__be32 flg = tcp_flag_word(th) & (TCP_FLAG_RST|TCP_FLAG_SYN|TCP_FLAG_ACK);
 	bool paws_reject = false;
 
+	BUG_ON(fastopen == (sk->sk_state == TCP_LISTEN));
+
 	tmp_opt.saw_tstamp = 0;
 	if (th->doff > (sizeof(struct tcphdr)>>2)) {
 		tcp_parse_options(skb, &tmp_opt, &hash_location, 0, NULL);
@@ -565,6 +573,9 @@ struct sock *tcp_check_req(struct sock *sk, struct sk_buff *skb,
 		 *
 		 * Enforce "SYN-ACK" according to figure 8, figure 6
 		 * of RFC793, fixed by RFC1122.
+		 *
+		 * Note that even if there is new data in the SYN packet
+		 * they will be thrown away too.
 		 */
 		req->rsk_ops->rtx_syn_ack(sk, req, NULL);
 		return NULL;
@@ -622,9 +633,12 @@ struct sock *tcp_check_req(struct sock *sk, struct sk_buff *skb,
 	 *                  sent (the segment carries an unacceptable ACK) ...
 	 *                  a reset is sent."
 	 *
-	 * Invalid ACK: reset will be sent by listening socket
+	 * Invalid ACK: reset will be sent by listening socket.
+	 * Note that the ACK validity check for a Fast Open socket is done
+	 * elsewhere and is checked directly against the child socket rather
+	 * than req because user data may have been sent out.
 	 */
-	if ((flg & TCP_FLAG_ACK) &&
+	if ((flg & TCP_FLAG_ACK) && !fastopen &&
 	    (TCP_SKB_CB(skb)->ack_seq !=
 	     tcp_rsk(req)->snt_isn + 1 + tcp_s_data_size(tcp_sk(sk))))
 		return sk;
@@ -637,7 +651,7 @@ struct sock *tcp_check_req(struct sock *sk, struct sk_buff *skb,
 	/* RFC793: "first check sequence number". */
 
 	if (paws_reject || !tcp_in_window(TCP_SKB_CB(skb)->seq, TCP_SKB_CB(skb)->end_seq,
-					  tcp_rsk(req)->rcv_isn + 1, tcp_rsk(req)->rcv_isn + 1 + req->rcv_wnd)) {
+					  tcp_rsk(req)->rcv_nxt, tcp_rsk(req)->rcv_nxt + req->rcv_wnd)) {
 		/* Out of window: send ACK and drop. */
 		if (!(flg & TCP_FLAG_RST))
 			req->rsk_ops->send_ack(sk, skb, req);
@@ -648,7 +662,7 @@ struct sock *tcp_check_req(struct sock *sk, struct sk_buff *skb,
 
 	/* In sequence, PAWS is OK. */
 
-	if (tmp_opt.saw_tstamp && !after(TCP_SKB_CB(skb)->seq, tcp_rsk(req)->rcv_isn + 1))
+	if (tmp_opt.saw_tstamp && !after(TCP_SKB_CB(skb)->seq, tcp_rsk(req)->rcv_nxt))
 		req->ts_recent = tmp_opt.rcv_tsval;
 
 	if (TCP_SKB_CB(skb)->seq == tcp_rsk(req)->rcv_isn) {
@@ -667,10 +681,19 @@ struct sock *tcp_check_req(struct sock *sk, struct sk_buff *skb,
 
 	/* ACK sequence verified above, just make sure ACK is
 	 * set.  If ACK not set, just silently drop the packet.
+	 *
+	 * XXX (TFO) - if we ever allow "data after SYN", the
+	 * following check needs to be removed.
 	 */
 	if (!(flg & TCP_FLAG_ACK))
 		return NULL;
 
+	/* For Fast Open no more processing is needed (sk is the
+	 * child socket).
+	 */
+	if (fastopen)
+		return sk;
+
 	/* While TCP_DEFER_ACCEPT is active, drop bare ACK. */
 	if (req->retrans < inet_csk(sk)->icsk_accept_queue.rskq_defer_accept &&
 	    TCP_SKB_CB(skb)->end_seq == tcp_rsk(req)->rcv_isn + 1) {
@@ -706,11 +729,21 @@ listen_overflow:
 	}
 
 embryonic_reset:
-	NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_EMBRYONICRSTS);
-	if (!(flg & TCP_FLAG_RST))
+	if (!(flg & TCP_FLAG_RST)) {
+		/* Received a bad SYN pkt - for TFO We try not to reset
+		 * the local connection unless it's really necessary to
+		 * avoid becoming vulnerable to outside attack aiming at
+		 * resetting legit local connections.
+		 */
 		req->rsk_ops->send_reset(sk, skb);
-
-	inet_csk_reqsk_queue_drop(sk, req, prev);
+	} else if (fastopen) { /* received a valid RST pkt */
+		reqsk_fastopen_remove(sk, req, true);
+		tcp_reset(sk);
+	}
+	if (!fastopen) {
+		inet_csk_reqsk_queue_drop(sk, req, prev);
+		NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_EMBRYONICRSTS);
+	}
 	return NULL;
 }
 EXPORT_SYMBOL(tcp_check_req);
@@ -719,6 +752,12 @@ EXPORT_SYMBOL(tcp_check_req);
  * Queue segment on the new socket if the new socket is active,
  * otherwise we just shortcircuit this and continue with
  * the new socket.
+ *
+ * For the vast majority of cases child->sk_state will be TCP_SYN_RECV
+ * when entering. But other states are possible due to a race condition
+ * where after __inet_lookup_established() fails but before the listener
+ * locked is obtained, other packets cause the same connection to
+ * be created.
  */
 
 int tcp_child_process(struct sock *parent, struct sock *child,
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index d04632673a9e..9383b51f3efc 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -702,7 +702,8 @@ static unsigned int tcp_synack_options(struct sock *sk,
 				   unsigned int mss, struct sk_buff *skb,
 				   struct tcp_out_options *opts,
 				   struct tcp_md5sig_key **md5,
-				   struct tcp_extend_values *xvp)
+				   struct tcp_extend_values *xvp,
+				   struct tcp_fastopen_cookie *foc)
 {
 	struct inet_request_sock *ireq = inet_rsk(req);
 	unsigned int remaining = MAX_TCP_OPTION_SPACE;
@@ -747,7 +748,15 @@ static unsigned int tcp_synack_options(struct sock *sk,
 		if (unlikely(!ireq->tstamp_ok))
 			remaining -= TCPOLEN_SACKPERM_ALIGNED;
 	}
-
+	if (foc != NULL) {
+		u32 need = TCPOLEN_EXP_FASTOPEN_BASE + foc->len;
+		need = (need + 3) & ~3U;  /* Align to 32 bits */
+		if (remaining >= need) {
+			opts->options |= OPTION_FAST_OPEN_COOKIE;
+			opts->fastopen_cookie = foc;
+			remaining -= need;
+		}
+	}
 	/* Similar rationale to tcp_syn_options() applies here, too.
 	 * If the <SYN> options fit, the same options should fit now!
 	 */
@@ -2658,7 +2667,8 @@ int tcp_send_synack(struct sock *sk)
  */
 struct sk_buff *tcp_make_synack(struct sock *sk, struct dst_entry *dst,
 				struct request_sock *req,
-				struct request_values *rvp)
+				struct request_values *rvp,
+				struct tcp_fastopen_cookie *foc)
 {
 	struct tcp_out_options opts;
 	struct tcp_extend_values *xvp = tcp_xv(rvp);
@@ -2718,7 +2728,7 @@ struct sk_buff *tcp_make_synack(struct sock *sk, struct dst_entry *dst,
 #endif
 	TCP_SKB_CB(skb)->when = tcp_time_stamp;
 	tcp_header_size = tcp_synack_options(sk, req, mss,
-					     skb, &opts, &md5, xvp)
+					     skb, &opts, &md5, xvp, foc)
 			+ sizeof(*th);
 
 	skb_push(skb, tcp_header_size);
@@ -2772,7 +2782,8 @@ struct sk_buff *tcp_make_synack(struct sock *sk, struct dst_entry *dst,
 	}
 
 	th->seq = htonl(TCP_SKB_CB(skb)->seq);
-	th->ack_seq = htonl(tcp_rsk(req)->rcv_isn + 1);
+	/* XXX data is queued and acked as is. No buffer/window check */
+	th->ack_seq = htonl(tcp_rsk(req)->rcv_nxt);
 
 	/* RFC1323: The window in SYN & SYN/ACK segments is never scaled. */
 	th->window = htons(min(req->rcv_wnd, 65535U));
diff --git a/net/ipv4/tcp_timer.c b/net/ipv4/tcp_timer.c
index b774a03bd1dc..fc04711e80c8 100644
--- a/net/ipv4/tcp_timer.c
+++ b/net/ipv4/tcp_timer.c
@@ -305,6 +305,35 @@ static void tcp_probe_timer(struct sock *sk)
 }
 
 /*
+ *	Timer for Fast Open socket to retransmit SYNACK. Note that the
+ *	sk here is the child socket, not the parent (listener) socket.
+ */
+static void tcp_fastopen_synack_timer(struct sock *sk)
+{
+	struct inet_connection_sock *icsk = inet_csk(sk);
+	int max_retries = icsk->icsk_syn_retries ? :
+	    sysctl_tcp_synack_retries + 1; /* add one more retry for fastopen */
+	struct request_sock *req;
+
+	req = tcp_sk(sk)->fastopen_rsk;
+	req->rsk_ops->syn_ack_timeout(sk, req);
+
+	if (req->retrans >= max_retries) {
+		tcp_write_err(sk);
+		return;
+	}
+	/* XXX (TFO) - Unlike regular SYN-ACK retransmit, we ignore error
+	 * returned from rtx_syn_ack() to make it more persistent like
+	 * regular retransmit because if the child socket has been accepted
+	 * it's not good to give up too easily.
+	 */
+	req->rsk_ops->rtx_syn_ack(sk, req, NULL);
+	req->retrans++;
+	inet_csk_reset_xmit_timer(sk, ICSK_TIME_RETRANS,
+			  TCP_TIMEOUT_INIT << req->retrans, TCP_RTO_MAX);
+}
+
+/*
  *	The TCP retransmit timer.
  */
 
@@ -317,7 +346,15 @@ void tcp_retransmit_timer(struct sock *sk)
 		tcp_resume_early_retransmit(sk);
 		return;
 	}
-
+	if (tp->fastopen_rsk) {
+		BUG_ON(sk->sk_state != TCP_SYN_RECV &&
+		    sk->sk_state != TCP_FIN_WAIT1);
+		tcp_fastopen_synack_timer(sk);
+		/* Before we receive ACK to our SYN-ACK don't retransmit
+		 * anything else (e.g., data or FIN segments).
+		 */
+		return;
+	}
 	if (!tp->packets_out)
 		goto out;
 
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 6f6d1aca3c3d..c4e64328d8ba 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -2110,7 +2110,9 @@ static void udp4_format_sock(struct sock *sp, struct seq_file *f,
 		bucket, src, srcp, dest, destp, sp->sk_state,
 		sk_wmem_alloc_get(sp),
 		sk_rmem_alloc_get(sp),
-		0, 0L, 0, sock_i_uid(sp), 0, sock_i_ino(sp),
+		0, 0L, 0,
+		from_kuid_munged(seq_user_ns(f), sock_i_uid(sp)),
+		0, sock_i_ino(sp),
 		atomic_read(&sp->sk_refcnt), sp,
 		atomic_read(&sp->sk_drops), len);
 }
diff --git a/net/ipv4/udp_diag.c b/net/ipv4/udp_diag.c
index 16d0960062be..d2f336ea82ca 100644
--- a/net/ipv4/udp_diag.c
+++ b/net/ipv4/udp_diag.c
@@ -24,7 +24,9 @@ static int sk_diag_dump(struct sock *sk, struct sk_buff *skb,
 	if (!inet_diag_bc_sk(bc, sk))
 		return 0;
 
-	return inet_sk_diag_fill(sk, NULL, skb, req, NETLINK_CB(cb->skb).pid,
+	return inet_sk_diag_fill(sk, NULL, skb, req,
+			sk_user_ns(NETLINK_CB(cb->skb).ssk),
+			NETLINK_CB(cb->skb).pid,
 			cb->nlh->nlmsg_seq, NLM_F_MULTI, cb->nlh);
 }
 
@@ -69,6 +71,7 @@ static int udp_dump_one(struct udp_table *tbl, struct sk_buff *in_skb,
 		goto out;
 
 	err = inet_sk_diag_fill(sk, NULL, rep, req,
+			   sk_user_ns(NETLINK_CB(in_skb).ssk),
 			   NETLINK_CB(in_skb).pid,
 			   nlh->nlmsg_seq, 0, nlh);
 	if (err < 0) {
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 19d4bffda9d7..572cb660837b 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -127,8 +127,8 @@ static inline void addrconf_sysctl_unregister(struct inet6_dev *idev)
 #endif
 
 #ifdef CONFIG_IPV6_PRIVACY
-static int __ipv6_regen_rndid(struct inet6_dev *idev);
-static int __ipv6_try_regen_rndid(struct inet6_dev *idev, struct in6_addr *tmpaddr);
+static void __ipv6_regen_rndid(struct inet6_dev *idev);
+static void __ipv6_try_regen_rndid(struct inet6_dev *idev, struct in6_addr *tmpaddr);
 static void ipv6_regen_rndid(unsigned long data);
 #endif
 
@@ -852,16 +852,7 @@ retry:
 	}
 	in6_ifa_hold(ifp);
 	memcpy(addr.s6_addr, ifp->addr.s6_addr, 8);
-	if (__ipv6_try_regen_rndid(idev, tmpaddr) < 0) {
-		spin_unlock_bh(&ifp->lock);
-		write_unlock(&idev->lock);
-		pr_warn("%s: regeneration of randomized interface id failed\n",
-			__func__);
-		in6_ifa_put(ifp);
-		in6_dev_put(idev);
-		ret = -1;
-		goto out;
-	}
+	__ipv6_try_regen_rndid(idev, tmpaddr);
 	memcpy(&addr.s6_addr[8], idev->rndid, 8);
 	age = (now - ifp->tstamp) / HZ;
 	tmp_valid_lft = min_t(__u32,
@@ -1600,7 +1591,7 @@ static int ipv6_inherit_eui64(u8 *eui, struct inet6_dev *idev)
 
 #ifdef CONFIG_IPV6_PRIVACY
 /* (re)generation of randomized interface identifier (RFC 3041 3.2, 3.5) */
-static int __ipv6_regen_rndid(struct inet6_dev *idev)
+static void __ipv6_regen_rndid(struct inet6_dev *idev)
 {
 regen:
 	get_random_bytes(idev->rndid, sizeof(idev->rndid));
@@ -1627,8 +1618,6 @@ regen:
 		if ((idev->rndid[2]|idev->rndid[3]|idev->rndid[4]|idev->rndid[5]|idev->rndid[6]|idev->rndid[7]) == 0x00)
 			goto regen;
 	}
-
-	return 0;
 }
 
 static void ipv6_regen_rndid(unsigned long data)
@@ -1642,8 +1631,7 @@ static void ipv6_regen_rndid(unsigned long data)
 	if (idev->dead)
 		goto out;
 
-	if (__ipv6_regen_rndid(idev) < 0)
-		goto out;
+	__ipv6_regen_rndid(idev);
 
 	expires = jiffies +
 		idev->cnf.temp_prefered_lft * HZ -
@@ -1664,13 +1652,10 @@ out:
 	in6_dev_put(idev);
 }
 
-static int __ipv6_try_regen_rndid(struct inet6_dev *idev, struct in6_addr *tmpaddr)
+static void  __ipv6_try_regen_rndid(struct inet6_dev *idev, struct in6_addr *tmpaddr)
 {
-	int ret = 0;
-
 	if (tmpaddr && memcmp(idev->rndid, &tmpaddr->s6_addr[8], 8) == 0)
-		ret = __ipv6_regen_rndid(idev);
-	return ret;
+		__ipv6_regen_rndid(idev);
 }
 #endif
 
@@ -2566,14 +2551,10 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event,
 			   void *data)
 {
 	struct net_device *dev = (struct net_device *) data;
-	struct inet6_dev *idev;
+	struct inet6_dev *idev = __in6_dev_get(dev);
 	int run_pending = 0;
 	int err;
 
-	if (event == NETDEV_UNREGISTER_FINAL)
-		return NOTIFY_DONE;
-
-	idev = __in6_dev_get(dev);
 	switch (event) {
 	case NETDEV_REGISTER:
 		if (!idev && dev->mtu >= IPV6_MIN_MTU) {
diff --git a/net/ipv6/ip6_flowlabel.c b/net/ipv6/ip6_flowlabel.c
index 9772fbd8a3f5..90bbefb57943 100644
--- a/net/ipv6/ip6_flowlabel.c
+++ b/net/ipv6/ip6_flowlabel.c
@@ -22,6 +22,7 @@
 #include <linux/seq_file.h>
 #include <linux/slab.h>
 #include <linux/export.h>
+#include <linux/pid_namespace.h>
 
 #include <net/net_namespace.h>
 #include <net/sock.h>
@@ -91,6 +92,8 @@ static struct ip6_flowlabel *fl_lookup(struct net *net, __be32 label)
 static void fl_free(struct ip6_flowlabel *fl)
 {
 	if (fl) {
+		if (fl->share == IPV6_FL_S_PROCESS)
+			put_pid(fl->owner.pid);
 		release_net(fl->fl_net);
 		kfree(fl->opt);
 	}
@@ -394,10 +397,10 @@ fl_create(struct net *net, struct sock *sk, struct in6_flowlabel_req *freq,
 	case IPV6_FL_S_ANY:
 		break;
 	case IPV6_FL_S_PROCESS:
-		fl->owner = current->pid;
+		fl->owner.pid = get_task_pid(current, PIDTYPE_PID);
 		break;
 	case IPV6_FL_S_USER:
-		fl->owner = current_euid();
+		fl->owner.uid = current_euid();
 		break;
 	default:
 		err = -EINVAL;
@@ -561,7 +564,10 @@ recheck:
 				err = -EPERM;
 				if (fl1->share == IPV6_FL_S_EXCL ||
 				    fl1->share != fl->share ||
-				    fl1->owner != fl->owner)
+				    ((fl1->share == IPV6_FL_S_PROCESS) &&
+				     (fl1->owner.pid == fl->owner.pid)) ||
+				    ((fl1->share == IPV6_FL_S_USER) &&
+				     uid_eq(fl1->owner.uid, fl->owner.uid)))
 					goto release;
 
 				err = -EINVAL;
@@ -621,6 +627,7 @@ done:
 
 struct ip6fl_iter_state {
 	struct seq_net_private p;
+	struct pid_namespace *pid_ns;
 	int bucket;
 };
 
@@ -699,6 +706,7 @@ static void ip6fl_seq_stop(struct seq_file *seq, void *v)
 
 static int ip6fl_seq_show(struct seq_file *seq, void *v)
 {
+	struct ip6fl_iter_state *state = ip6fl_seq_private(seq);
 	if (v == SEQ_START_TOKEN)
 		seq_printf(seq, "%-5s %-1s %-6s %-6s %-6s %-8s %-32s %s\n",
 			   "Label", "S", "Owner", "Users", "Linger", "Expires", "Dst", "Opt");
@@ -708,7 +716,11 @@ static int ip6fl_seq_show(struct seq_file *seq, void *v)
 			   "%05X %-1d %-6d %-6d %-6ld %-8ld %pi6 %-4d\n",
 			   (unsigned int)ntohl(fl->label),
 			   fl->share,
-			   (int)fl->owner,
+			   ((fl->share == IPV6_FL_S_PROCESS) ?
+			    pid_nr_ns(fl->owner.pid, state->pid_ns) :
+			    ((fl->share == IPV6_FL_S_USER) ?
+			     from_kuid_munged(seq_user_ns(seq), fl->owner.uid) :
+			     0)),
 			   atomic_read(&fl->users),
 			   fl->linger/HZ,
 			   (long)(fl->expires - jiffies)/HZ,
@@ -727,8 +739,29 @@ static const struct seq_operations ip6fl_seq_ops = {
 
 static int ip6fl_seq_open(struct inode *inode, struct file *file)
 {
-	return seq_open_net(inode, file, &ip6fl_seq_ops,
-			    sizeof(struct ip6fl_iter_state));
+	struct seq_file *seq;
+	struct ip6fl_iter_state *state;
+	int err;
+
+	err = seq_open_net(inode, file, &ip6fl_seq_ops,
+			   sizeof(struct ip6fl_iter_state));
+
+	if (!err) {
+		seq = file->private_data;
+		state = ip6fl_seq_private(seq);
+		rcu_read_lock();
+		state->pid_ns = get_pid_ns(task_active_pid_ns(current));
+		rcu_read_unlock();
+	}
+	return err;
+}
+
+static int ip6fl_seq_release(struct inode *inode, struct file *file)
+{
+	struct seq_file *seq = file->private_data;
+	struct ip6fl_iter_state *state = ip6fl_seq_private(seq);
+	put_pid_ns(state->pid_ns);
+	return seq_release_net(inode, file);
 }
 
 static const struct file_operations ip6fl_seq_fops = {
@@ -736,7 +769,7 @@ static const struct file_operations ip6fl_seq_fops = {
 	.open		=	ip6fl_seq_open,
 	.read		=	seq_read,
 	.llseek		=	seq_lseek,
-	.release	=	seq_release_net,
+	.release	=	ip6fl_seq_release,
 };
 
 static int __net_init ip6_flowlabel_proc_init(struct net *net)
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index ef0579d5bca6..7af88ef01657 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -1251,7 +1251,8 @@ static void raw6_sock_seq_show(struct seq_file *seq, struct sock *sp, int i)
 		   sk_wmem_alloc_get(sp),
 		   sk_rmem_alloc_get(sp),
 		   0, 0L, 0,
-		   sock_i_uid(sp), 0,
+		   from_kuid_munged(seq_user_ns(seq), sock_i_uid(sp)),
+		   0,
 		   sock_i_ino(sp),
 		   atomic_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops));
 }
diff --git a/net/ipv6/syncookies.c b/net/ipv6/syncookies.c
index bb46061c813a..182ab9a85d6c 100644
--- a/net/ipv6/syncookies.c
+++ b/net/ipv6/syncookies.c
@@ -190,6 +190,7 @@ struct sock *cookie_v6_check(struct sock *sk, struct sk_buff *skb)
 	ireq = inet_rsk(req);
 	ireq6 = inet6_rsk(req);
 	treq = tcp_rsk(req);
+	treq->listener = NULL;
 
 	if (security_inet_conn_request(sk, skb, req))
 		goto out_free;
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index cd49de3678fb..09078b9bc6f6 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -475,7 +475,7 @@ static int tcp_v6_send_synack(struct sock *sk, struct dst_entry *dst,
 	if (!dst && (dst = inet6_csk_route_req(sk, fl6, req)) == NULL)
 		goto done;
 
-	skb = tcp_make_synack(sk, dst, req, rvp);
+	skb = tcp_make_synack(sk, dst, req, rvp, NULL);
 
 	if (skb) {
 		__tcp_v6_send_check(skb, &treq->loc_addr, &treq->rmt_addr);
@@ -987,7 +987,7 @@ static struct sock *tcp_v6_hnd_req(struct sock *sk,struct sk_buff *skb)
 				   &ipv6_hdr(skb)->saddr,
 				   &ipv6_hdr(skb)->daddr, inet6_iif(skb));
 	if (req)
-		return tcp_check_req(sk, skb, req, prev);
+		return tcp_check_req(sk, skb, req, prev, false);
 
 	nsk = __inet6_lookup_established(sock_net(sk), &tcp_hashinfo,
 			&ipv6_hdr(skb)->saddr, th->source,
@@ -1179,6 +1179,7 @@ have_isn:
 	    want_cookie)
 		goto drop_and_free;
 
+	tcp_rsk(req)->listener = NULL;
 	inet6_csk_reqsk_queue_hash_add(sk, req, TCP_TIMEOUT_INIT);
 	return 0;
 
@@ -1828,7 +1829,7 @@ static void tcp_v6_destroy_sock(struct sock *sk)
 #ifdef CONFIG_PROC_FS
 /* Proc filesystem TCPv6 sock list dumping. */
 static void get_openreq6(struct seq_file *seq,
-			 const struct sock *sk, struct request_sock *req, int i, int uid)
+			 const struct sock *sk, struct request_sock *req, int i, kuid_t uid)
 {
 	int ttd = req->expires - jiffies;
 	const struct in6_addr *src = &inet6_rsk(req)->loc_addr;
@@ -1852,7 +1853,7 @@ static void get_openreq6(struct seq_file *seq,
 		   1,   /* timers active (only the expire timer) */
 		   jiffies_to_clock_t(ttd),
 		   req->retrans,
-		   uid,
+		   from_kuid_munged(seq_user_ns(seq), uid),
 		   0,  /* non standard timer */
 		   0, /* open_requests have no inode */
 		   0, req);
@@ -1902,7 +1903,7 @@ static void get_tcp6_sock(struct seq_file *seq, struct sock *sp, int i)
 		   timer_active,
 		   jiffies_delta_to_clock_t(timer_expires - jiffies),
 		   icsk->icsk_retransmits,
-		   sock_i_uid(sp),
+		   from_kuid_munged(seq_user_ns(seq), sock_i_uid(sp)),
 		   icsk->icsk_probes_out,
 		   sock_i_ino(sp),
 		   atomic_read(&sp->sk_refcnt), sp,
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 99d0077b56b8..bbdff07eebe1 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -1458,7 +1458,8 @@ static void udp6_sock_seq_show(struct seq_file *seq, struct sock *sp, int bucket
 		   sk_wmem_alloc_get(sp),
 		   sk_rmem_alloc_get(sp),
 		   0, 0L, 0,
-		   sock_i_uid(sp), 0,
+		   from_kuid_munged(seq_user_ns(seq), sock_i_uid(sp)),
+		   0,
 		   sock_i_ino(sp),
 		   atomic_read(&sp->sk_refcnt), sp,
 		   atomic_read(&sp->sk_drops));
diff --git a/net/ipx/ipx_proc.c b/net/ipx/ipx_proc.c
index f8ba30dfecae..02ff7f2f60d4 100644
--- a/net/ipx/ipx_proc.c
+++ b/net/ipx/ipx_proc.c
@@ -217,7 +217,8 @@ static int ipx_seq_socket_show(struct seq_file *seq, void *v)
 	seq_printf(seq, "%08X  %08X  %02X     %03d\n",
 		   sk_wmem_alloc_get(s),
 		   sk_rmem_alloc_get(s),
-		   s->sk_state, SOCK_INODE(s->sk_socket)->i_uid);
+		   s->sk_state,
+		   from_kuid_munged(seq_user_ns(seq), sock_i_uid(s)));
 out:
 	return 0;
 }
diff --git a/net/key/af_key.c b/net/key/af_key.c
index ec7d161c129b..334f93b8cfcb 100644
--- a/net/key/af_key.c
+++ b/net/key/af_key.c
@@ -3661,7 +3661,7 @@ static int pfkey_seq_show(struct seq_file *f, void *v)
 			       atomic_read(&s->sk_refcnt),
 			       sk_rmem_alloc_get(s),
 			       sk_wmem_alloc_get(s),
-			       sock_i_uid(s),
+			       from_kuid_munged(seq_user_ns(f), sock_i_uid(s)),
 			       sock_i_ino(s)
 			       );
 	return 0;
diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c
index 393355d37b47..513cab08a986 100644
--- a/net/l2tp/l2tp_core.c
+++ b/net/l2tp/l2tp_core.c
@@ -1347,11 +1347,10 @@ static void l2tp_tunnel_free(struct l2tp_tunnel *tunnel)
 	/* Remove from tunnel list */
 	spin_lock_bh(&pn->l2tp_tunnel_list_lock);
 	list_del_rcu(&tunnel->list);
+	kfree_rcu(tunnel, rcu);
 	spin_unlock_bh(&pn->l2tp_tunnel_list_lock);
-	synchronize_rcu();
 
 	atomic_dec(&l2tp_tunnel_count);
-	kfree(tunnel);
 }
 
 /* Create a socket for the tunnel, if one isn't set up by
diff --git a/net/l2tp/l2tp_core.h b/net/l2tp/l2tp_core.h
index a38ec6cdeee1..56d583e083a7 100644
--- a/net/l2tp/l2tp_core.h
+++ b/net/l2tp/l2tp_core.h
@@ -163,6 +163,7 @@ struct l2tp_tunnel_cfg {
 
 struct l2tp_tunnel {
 	int			magic;		/* Should be L2TP_TUNNEL_MAGIC */
+	struct rcu_head rcu;
 	rwlock_t		hlist_lock;	/* protect session_hlist */
 	struct hlist_head	session_hlist[L2TP_HASH_SIZE];
 						/* hashed list of sessions,
diff --git a/net/llc/llc_proc.c b/net/llc/llc_proc.c
index a1839c004357..7b4799cfbf8d 100644
--- a/net/llc/llc_proc.c
+++ b/net/llc/llc_proc.c
@@ -151,7 +151,7 @@ static int llc_seq_socket_show(struct seq_file *seq, void *v)
 		   sk_wmem_alloc_get(sk),
 		   sk_rmem_alloc_get(sk) - llc->copied_seq,
 		   sk->sk_state,
-		   sk->sk_socket ? SOCK_INODE(sk->sk_socket)->i_uid : -1,
+		   from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)),
 		   llc->link);
 out:
 	return 0;
diff --git a/net/mac80211/aes_cmac.c b/net/mac80211/aes_cmac.c
index 8dfd70d8fcfb..a04752e91023 100644
--- a/net/mac80211/aes_cmac.c
+++ b/net/mac80211/aes_cmac.c
@@ -38,14 +38,10 @@ static void gf_mulx(u8 *pad)
 static void aes_128_cmac_vector(struct crypto_cipher *tfm, size_t num_elem,
 				const u8 *addr[], const size_t *len, u8 *mac)
 {
-	u8 scratch[2 * AES_BLOCK_SIZE];
-	u8 *cbc, *pad;
+	u8 cbc[AES_BLOCK_SIZE], pad[AES_BLOCK_SIZE];
 	const u8 *pos, *end;
 	size_t i, e, left, total_len;
 
-	cbc = scratch;
-	pad = scratch + AES_BLOCK_SIZE;
-
 	memset(cbc, 0, AES_BLOCK_SIZE);
 
 	total_len = 0;
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index d41974aacf51..929f897a8ded 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -102,6 +102,18 @@ static int ieee80211_change_iface(struct wiphy *wiphy,
 	return 0;
 }
 
+static int ieee80211_start_p2p_device(struct wiphy *wiphy,
+				      struct wireless_dev *wdev)
+{
+	return ieee80211_do_open(wdev, true);
+}
+
+static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
+				      struct wireless_dev *wdev)
+{
+	ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
+}
+
 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 				  struct net_device *dev,
 				  u16 noack_map)
@@ -330,7 +342,7 @@ static void rate_idx_to_bitrate(struct rate_info *rate, struct sta_info *sta, in
 	if (!(rate->flags & RATE_INFO_FLAGS_MCS)) {
 		struct ieee80211_supported_band *sband;
 		sband = sta->local->hw.wiphy->bands[
-				sta->local->hw.conf.channel->band];
+				sta->local->oper_channel->band];
 		rate->legacy = sband->bitrates[idx].bitrate;
 	} else
 		rate->mcs = idx;
@@ -725,25 +737,23 @@ static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 				    const u8 *resp, size_t resp_len)
 {
-	struct sk_buff *new, *old;
+	struct probe_resp *new, *old;
 
 	if (!resp || !resp_len)
 		return 1;
 
 	old = rtnl_dereference(sdata->u.ap.probe_resp);
 
-	new = dev_alloc_skb(resp_len);
+	new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 	if (!new)
 		return -ENOMEM;
 
-	memcpy(skb_put(new, resp_len), resp, resp_len);
+	new->len = resp_len;
+	memcpy(new->data, resp, resp_len);
 
 	rcu_assign_pointer(sdata->u.ap.probe_resp, new);
-	if (old) {
-		/* TODO: use call_rcu() */
-		synchronize_rcu();
-		dev_kfree_skb(old);
-	}
+	if (old)
+		kfree_rcu(old, rcu_head);
 
 	return 0;
 }
@@ -950,7 +960,7 @@ static void ieee80211_send_layer2_update(struct sta_info *sta)
 	/* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 	 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 
-	memset(msg->da, 0xff, ETH_ALEN);
+	eth_broadcast_addr(msg->da);
 	memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 	msg->len = htons(6);
 	msg->dsap = 0;
@@ -1285,9 +1295,10 @@ static int ieee80211_change_station(struct wiphy *wiphy,
 	mutex_unlock(&local->sta_mtx);
 
 	if (sdata->vif.type == NL80211_IFTYPE_STATION &&
-	    params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))
+	    params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 		ieee80211_recalc_ps(local, -1);
-
+		ieee80211_recalc_ps_vif(sdata);
+	}
 	return 0;
 }
 
@@ -1661,7 +1672,7 @@ static int ieee80211_change_bss(struct wiphy *wiphy,
 	}
 
 	if (!sdata->vif.bss_conf.use_short_slot &&
-	    sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
+	    sdata->local->oper_channel->band == IEEE80211_BAND_5GHZ) {
 		sdata->vif.bss_conf.use_short_slot = true;
 		changed |= BSS_CHANGED_ERP_SLOT;
 	}
@@ -1775,6 +1786,7 @@ static int ieee80211_scan(struct wiphy *wiphy,
 	case NL80211_IFTYPE_ADHOC:
 	case NL80211_IFTYPE_MESH_POINT:
 	case NL80211_IFTYPE_P2P_CLIENT:
+	case NL80211_IFTYPE_P2P_DEVICE:
 		break;
 	case NL80211_IFTYPE_P2P_GO:
 		if (sdata->local->ops->hw_scan)
@@ -1927,7 +1939,7 @@ static int ieee80211_set_tx_power(struct wiphy *wiphy,
 				  enum nl80211_tx_power_setting type, int mbm)
 {
 	struct ieee80211_local *local = wiphy_priv(wiphy);
-	struct ieee80211_channel *chan = local->hw.conf.channel;
+	struct ieee80211_channel *chan = local->oper_channel;
 	u32 changes = 0;
 
 	switch (type) {
@@ -2079,6 +2091,7 @@ static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
 		ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
 
 	ieee80211_recalc_ps(local, -1);
+	ieee80211_recalc_ps_vif(sdata);
 
 	return 0;
 }
@@ -2461,6 +2474,9 @@ static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
 		if (!sdata->u.mgd.associated)
 			need_offchan = true;
 		break;
+	case NL80211_IFTYPE_P2P_DEVICE:
+		need_offchan = true;
+		break;
 	default:
 		return -EOPNOTSUPP;
 	}
@@ -2653,6 +2669,7 @@ ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
 			       u16 status_code, struct sk_buff *skb)
 {
 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	struct ieee80211_local *local = sdata->local;
 	struct ieee80211_tdls_data *tf;
 
 	tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
@@ -2672,8 +2689,10 @@ ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
 		tf->u.setup_req.capability =
 			cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
 
-		ieee80211_add_srates_ie(sdata, skb, false);
-		ieee80211_add_ext_srates_ie(sdata, skb, false);
+		ieee80211_add_srates_ie(sdata, skb, false,
+					local->oper_channel->band);
+		ieee80211_add_ext_srates_ie(sdata, skb, false,
+					    local->oper_channel->band);
 		ieee80211_tdls_add_ext_capab(skb);
 		break;
 	case WLAN_TDLS_SETUP_RESPONSE:
@@ -2686,8 +2705,10 @@ ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
 		tf->u.setup_resp.capability =
 			cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
 
-		ieee80211_add_srates_ie(sdata, skb, false);
-		ieee80211_add_ext_srates_ie(sdata, skb, false);
+		ieee80211_add_srates_ie(sdata, skb, false,
+					local->oper_channel->band);
+		ieee80211_add_ext_srates_ie(sdata, skb, false,
+					    local->oper_channel->band);
 		ieee80211_tdls_add_ext_capab(skb);
 		break;
 	case WLAN_TDLS_SETUP_CONFIRM:
@@ -2725,6 +2746,7 @@ ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
 			   u16 status_code, struct sk_buff *skb)
 {
 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	struct ieee80211_local *local = sdata->local;
 	struct ieee80211_mgmt *mgmt;
 
 	mgmt = (void *)skb_put(skb, 24);
@@ -2747,8 +2769,10 @@ ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
 		mgmt->u.action.u.tdls_discover_resp.capability =
 			cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
 
-		ieee80211_add_srates_ie(sdata, skb, false);
-		ieee80211_add_ext_srates_ie(sdata, skb, false);
+		ieee80211_add_srates_ie(sdata, skb, false,
+					local->oper_channel->band);
+		ieee80211_add_ext_srates_ie(sdata, skb, false,
+					    local->oper_channel->band);
 		ieee80211_tdls_add_ext_capab(skb);
 		break;
 	default:
@@ -3005,6 +3029,8 @@ struct cfg80211_ops mac80211_config_ops = {
 	.add_virtual_intf = ieee80211_add_iface,
 	.del_virtual_intf = ieee80211_del_iface,
 	.change_virtual_intf = ieee80211_change_iface,
+	.start_p2p_device = ieee80211_start_p2p_device,
+	.stop_p2p_device = ieee80211_stop_p2p_device,
 	.add_key = ieee80211_add_key,
 	.del_key = ieee80211_del_key,
 	.get_key = ieee80211_get_key,
diff --git a/net/mac80211/debugfs.c b/net/mac80211/debugfs.c
index b8dfb440c8ef..97173f8144d4 100644
--- a/net/mac80211/debugfs.c
+++ b/net/mac80211/debugfs.c
@@ -63,8 +63,6 @@ DEBUGFS_READONLY_FILE(user_power, "%d",
 		      local->user_power_level);
 DEBUGFS_READONLY_FILE(power, "%d",
 		      local->hw.conf.power_level);
-DEBUGFS_READONLY_FILE(frequency, "%d",
-		      local->hw.conf.channel->center_freq);
 DEBUGFS_READONLY_FILE(total_ps_buffered, "%d",
 		      local->total_ps_buffered);
 DEBUGFS_READONLY_FILE(wep_iv, "%#08x",
@@ -91,33 +89,6 @@ static const struct file_operations reset_ops = {
 	.llseek = noop_llseek,
 };
 
-static ssize_t channel_type_read(struct file *file, char __user *user_buf,
-		       size_t count, loff_t *ppos)
-{
-	struct ieee80211_local *local = file->private_data;
-	const char *buf;
-
-	switch (local->hw.conf.channel_type) {
-	case NL80211_CHAN_NO_HT:
-		buf = "no ht\n";
-		break;
-	case NL80211_CHAN_HT20:
-		buf = "ht20\n";
-		break;
-	case NL80211_CHAN_HT40MINUS:
-		buf = "ht40-\n";
-		break;
-	case NL80211_CHAN_HT40PLUS:
-		buf = "ht40+\n";
-		break;
-	default:
-		buf = "???";
-		break;
-	}
-
-	return simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
-}
-
 static ssize_t hwflags_read(struct file *file, char __user *user_buf,
 			    size_t count, loff_t *ppos)
 {
@@ -205,7 +176,6 @@ static ssize_t queues_read(struct file *file, char __user *user_buf,
 }
 
 DEBUGFS_READONLY_FILE_OPS(hwflags);
-DEBUGFS_READONLY_FILE_OPS(channel_type);
 DEBUGFS_READONLY_FILE_OPS(queues);
 
 /* statistics stuff */
@@ -272,12 +242,10 @@ void debugfs_hw_add(struct ieee80211_local *local)
 
 	local->debugfs.keys = debugfs_create_dir("keys", phyd);
 
-	DEBUGFS_ADD(frequency);
 	DEBUGFS_ADD(total_ps_buffered);
 	DEBUGFS_ADD(wep_iv);
 	DEBUGFS_ADD(queues);
 	DEBUGFS_ADD_MODE(reset, 0200);
-	DEBUGFS_ADD(channel_type);
 	DEBUGFS_ADD(hwflags);
 	DEBUGFS_ADD(user_power);
 	DEBUGFS_ADD(power);
diff --git a/net/mac80211/driver-ops.h b/net/mac80211/driver-ops.h
index df9203199102..da9003b20004 100644
--- a/net/mac80211/driver-ops.h
+++ b/net/mac80211/driver-ops.h
@@ -9,7 +9,7 @@ static inline void check_sdata_in_driver(struct ieee80211_sub_if_data *sdata)
 {
 	WARN(!(sdata->flags & IEEE80211_SDATA_IN_DRIVER),
 	     "%s:  Failed check-sdata-in-driver check, flags: 0x%x\n",
-	     sdata->dev->name, sdata->flags);
+	     sdata->dev ? sdata->dev->name : sdata->name, sdata->flags);
 }
 
 static inline struct ieee80211_sub_if_data *
@@ -22,9 +22,11 @@ get_bss_sdata(struct ieee80211_sub_if_data *sdata)
 	return sdata;
 }
 
-static inline void drv_tx(struct ieee80211_local *local, struct sk_buff *skb)
+static inline void drv_tx(struct ieee80211_local *local,
+			  struct ieee80211_tx_control *control,
+			  struct sk_buff *skb)
 {
-	local->ops->tx(&local->hw, skb);
+	local->ops->tx(&local->hw, control, skb);
 }
 
 static inline void drv_get_et_strings(struct ieee80211_sub_if_data *sdata,
@@ -526,6 +528,9 @@ static inline void drv_sta_rc_update(struct ieee80211_local *local,
 	sdata = get_bss_sdata(sdata);
 	check_sdata_in_driver(sdata);
 
+	WARN_ON(changed & IEEE80211_RC_SUPP_RATES_CHANGED &&
+		sdata->vif.type != NL80211_IFTYPE_ADHOC);
+
 	trace_drv_sta_rc_update(local, sdata, sta, changed);
 	if (local->ops->sta_rc_update)
 		local->ops->sta_rc_update(&local->hw, &sdata->vif,
diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
index 5746d62faba1..a9d93285dba7 100644
--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
@@ -109,7 +109,7 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
 	memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon));
 	mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
 					  IEEE80211_STYPE_PROBE_RESP);
-	memset(mgmt->da, 0xff, ETH_ALEN);
+	eth_broadcast_addr(mgmt->da);
 	memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
 	memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN);
 	mgmt->u.beacon.beacon_int = cpu_to_le16(beacon_int);
@@ -205,7 +205,7 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
 	mod_timer(&ifibss->timer,
 		  round_jiffies(jiffies + IEEE80211_IBSS_MERGE_INTERVAL));
 
-	bss = cfg80211_inform_bss_frame(local->hw.wiphy, local->hw.conf.channel,
+	bss = cfg80211_inform_bss_frame(local->hw.wiphy, chan,
 					mgmt, skb->len, 0, GFP_KERNEL);
 	cfg80211_put_bss(bss);
 	netif_carrier_on(sdata->dev);
@@ -294,7 +294,7 @@ ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
 	struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
 	struct ieee80211_local *local = sdata->local;
 	struct sta_info *sta;
-	int band = local->hw.conf.channel->band;
+	int band = local->oper_channel->band;
 
 	/*
 	 * XXX: Consider removing the least recently used entry and
@@ -459,8 +459,11 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
 			}
 		}
 
-		if (sta && rates_updated)
+		if (sta && rates_updated) {
+			drv_sta_rc_update(local, sdata, &sta->sta,
+					  IEEE80211_RC_SUPP_RATES_CHANGED);
 			rate_control_rate_init(sta);
+		}
 
 		rcu_read_unlock();
 	}
@@ -561,7 +564,7 @@ void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
 	struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
 	struct ieee80211_local *local = sdata->local;
 	struct sta_info *sta;
-	int band = local->hw.conf.channel->band;
+	int band = local->oper_channel->band;
 
 	/*
 	 * XXX: Consider removing the least recently used entry and
@@ -759,7 +762,7 @@ static void ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata)
 				return;
 			}
 			sdata_info(sdata, "IBSS not allowed on %d MHz\n",
-				   local->hw.conf.channel->center_freq);
+				   local->oper_channel->center_freq);
 
 			/* No IBSS found - decrease scan interval and continue
 			 * scanning. */
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index bb61f7718c4c..204bfedba306 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -193,8 +193,6 @@ struct ieee80211_tx_data {
 	struct sta_info *sta;
 	struct ieee80211_key *key;
 
-	struct ieee80211_channel *channel;
-
 	unsigned int flags;
 };
 
@@ -274,9 +272,15 @@ struct beacon_data {
 	struct rcu_head rcu_head;
 };
 
+struct probe_resp {
+	struct rcu_head rcu_head;
+	int len;
+	u8 data[0];
+};
+
 struct ieee80211_if_ap {
 	struct beacon_data __rcu *beacon;
-	struct sk_buff __rcu *probe_resp;
+	struct probe_resp __rcu *probe_resp;
 
 	struct list_head vlans;
 
@@ -359,6 +363,7 @@ enum ieee80211_sta_flags {
 	IEEE80211_STA_NULLFUNC_ACKED	= BIT(8),
 	IEEE80211_STA_RESET_SIGNAL_AVE	= BIT(9),
 	IEEE80211_STA_DISABLE_40MHZ	= BIT(10),
+	IEEE80211_STA_DISABLE_VHT	= BIT(11),
 };
 
 struct ieee80211_mgd_auth_data {
@@ -1075,6 +1080,8 @@ struct ieee80211_local {
 	struct idr ack_status_frames;
 	spinlock_t ack_status_lock;
 
+	struct ieee80211_sub_if_data __rcu *p2p_sdata;
+
 	/* dummy netdev for use w/ NAPI */
 	struct net_device napi_dev;
 
@@ -1131,7 +1138,7 @@ struct ieee802_11_elems {
 	u8 *prep;
 	u8 *perr;
 	struct ieee80211_rann_ie *rann;
-	u8 *ch_switch_elem;
+	struct ieee80211_channel_sw_ie *ch_switch_ie;
 	u8 *country_elem;
 	u8 *pwr_constr_elem;
 	u8 *quiet_elem;	/* first quite element */
@@ -1157,7 +1164,6 @@ struct ieee802_11_elems {
 	u8 preq_len;
 	u8 prep_len;
 	u8 perr_len;
-	u8 ch_switch_elem_len;
 	u8 country_elem_len;
 	u8 pwr_constr_elem_len;
 	u8 quiet_elem_len;
@@ -1202,6 +1208,7 @@ int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
 void ieee80211_send_pspoll(struct ieee80211_local *local,
 			   struct ieee80211_sub_if_data *sdata);
 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
+void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
 int ieee80211_max_network_latency(struct notifier_block *nb,
 				  unsigned long data, void *dummy);
 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
@@ -1291,6 +1298,8 @@ void ieee80211_remove_interfaces(struct ieee80211_local *local);
 void ieee80211_recalc_idle(struct ieee80211_local *local);
 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
 				    const int offset);
+int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
+void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
 
 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
 {
@@ -1425,7 +1434,6 @@ void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
 			     struct ieee80211_hdr *hdr);
 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
 			     struct ieee80211_hdr *hdr, bool ack);
-void ieee80211_beacon_connection_loss_work(struct work_struct *work);
 
 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
 				     enum queue_stop_reason reason);
@@ -1457,13 +1465,15 @@ int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
 			     u8 channel);
 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
 					  u8 *dst, u32 ratemask,
+					  struct ieee80211_channel *chan,
 					  const u8 *ssid, size_t ssid_len,
 					  const u8 *ie, size_t ie_len,
 					  bool directed);
 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
 			      const u8 *ssid, size_t ssid_len,
 			      const u8 *ie, size_t ie_len,
-			      u32 ratemask, bool directed, bool no_cck);
+			      u32 ratemask, bool directed, bool no_cck,
+			      struct ieee80211_channel *channel);
 
 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
 				  const size_t supp_rates_len,
@@ -1487,9 +1497,11 @@ u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
 			       u32 cap);
 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
-			    struct sk_buff *skb, bool need_basic);
+			    struct sk_buff *skb, bool need_basic,
+			    enum ieee80211_band band);
 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
-				struct sk_buff *skb, bool need_basic);
+				struct sk_buff *skb, bool need_basic,
+				enum ieee80211_band band);
 
 /* channel management */
 enum ieee80211_chan_mode {
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index bfb57dcc1538..59f8adc2aa5f 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -100,6 +100,10 @@ static u32 __ieee80211_recalc_idle(struct ieee80211_local *local)
 			sdata->vif.bss_conf.idle = true;
 			continue;
 		}
+
+		if (sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE)
+			continue;
+
 		/* count everything else */
 		sdata->vif.bss_conf.idle = false;
 		count++;
@@ -121,7 +125,8 @@ static u32 __ieee80211_recalc_idle(struct ieee80211_local *local)
 
 	list_for_each_entry(sdata, &local->interfaces, list) {
 		if (sdata->vif.type == NL80211_IFTYPE_MONITOR ||
-		    sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
+		    sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
+		    sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE)
 			continue;
 		if (sdata->old_idle == sdata->vif.bss_conf.idle)
 			continue;
@@ -204,6 +209,8 @@ static inline int identical_mac_addr_allowed(int type1, int type2)
 {
 	return type1 == NL80211_IFTYPE_MONITOR ||
 		type2 == NL80211_IFTYPE_MONITOR ||
+		type1 == NL80211_IFTYPE_P2P_DEVICE ||
+		type2 == NL80211_IFTYPE_P2P_DEVICE ||
 		(type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_WDS) ||
 		(type1 == NL80211_IFTYPE_WDS &&
 			(type2 == NL80211_IFTYPE_WDS ||
@@ -406,9 +413,10 @@ static void ieee80211_del_virtual_monitor(struct ieee80211_local *local)
  * an error on interface type changes that have been pre-checked, so most
  * checks should be in ieee80211_check_concurrent_iface.
  */
-static int ieee80211_do_open(struct net_device *dev, bool coming_up)
+int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up)
 {
-	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
+	struct net_device *dev = wdev->netdev;
 	struct ieee80211_local *local = sdata->local;
 	struct sta_info *sta;
 	u32 changed = 0;
@@ -443,6 +451,7 @@ static int ieee80211_do_open(struct net_device *dev, bool coming_up)
 	case NL80211_IFTYPE_STATION:
 	case NL80211_IFTYPE_MONITOR:
 	case NL80211_IFTYPE_ADHOC:
+	case NL80211_IFTYPE_P2P_DEVICE:
 		/* no special treatment */
 		break;
 	case NL80211_IFTYPE_UNSPECIFIED:
@@ -471,7 +480,7 @@ static int ieee80211_do_open(struct net_device *dev, bool coming_up)
 	 * Copy the hopefully now-present MAC address to
 	 * this interface, if it has the special null one.
 	 */
-	if (is_zero_ether_addr(dev->dev_addr)) {
+	if (dev && is_zero_ether_addr(dev->dev_addr)) {
 		memcpy(dev->dev_addr,
 		       local->hw.wiphy->perm_addr,
 		       ETH_ALEN);
@@ -536,15 +545,23 @@ static int ieee80211_do_open(struct net_device *dev, bool coming_up)
 			local->fif_probe_req++;
 		}
 
-		changed |= ieee80211_reset_erp_info(sdata);
+		if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE)
+			changed |= ieee80211_reset_erp_info(sdata);
 		ieee80211_bss_info_change_notify(sdata, changed);
 
-		if (sdata->vif.type == NL80211_IFTYPE_STATION ||
-		    sdata->vif.type == NL80211_IFTYPE_ADHOC ||
-		    sdata->vif.type == NL80211_IFTYPE_AP)
+		switch (sdata->vif.type) {
+		case NL80211_IFTYPE_STATION:
+		case NL80211_IFTYPE_ADHOC:
+		case NL80211_IFTYPE_AP:
+		case NL80211_IFTYPE_MESH_POINT:
 			netif_carrier_off(dev);
-		else
+			break;
+		case NL80211_IFTYPE_WDS:
+		case NL80211_IFTYPE_P2P_DEVICE:
+			break;
+		default:
 			netif_carrier_on(dev);
+		}
 
 		/*
 		 * set default queue parameters so drivers don't
@@ -576,6 +593,9 @@ static int ieee80211_do_open(struct net_device *dev, bool coming_up)
 		}
 
 		rate_control_rate_init(sta);
+		netif_carrier_on(dev);
+	} else if (sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE) {
+		rcu_assign_pointer(local->p2p_sdata, sdata);
 	}
 
 	/*
@@ -601,7 +621,8 @@ static int ieee80211_do_open(struct net_device *dev, bool coming_up)
 
 	ieee80211_recalc_ps(local, -1);
 
-	netif_tx_start_all_queues(dev);
+	if (dev)
+		netif_tx_start_all_queues(dev);
 
 	return 0;
  err_del_interface:
@@ -631,7 +652,7 @@ static int ieee80211_open(struct net_device *dev)
 	if (err)
 		return err;
 
-	return ieee80211_do_open(dev, true);
+	return ieee80211_do_open(&sdata->wdev, true);
 }
 
 static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
@@ -652,7 +673,8 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
 	/*
 	 * Stop TX on this interface first.
 	 */
-	netif_tx_stop_all_queues(sdata->dev);
+	if (sdata->dev)
+		netif_tx_stop_all_queues(sdata->dev);
 
 	ieee80211_roc_purge(sdata);
 
@@ -691,14 +713,16 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
 		local->fif_probe_req--;
 	}
 
-	netif_addr_lock_bh(sdata->dev);
-	spin_lock_bh(&local->filter_lock);
-	__hw_addr_unsync(&local->mc_list, &sdata->dev->mc,
-			 sdata->dev->addr_len);
-	spin_unlock_bh(&local->filter_lock);
-	netif_addr_unlock_bh(sdata->dev);
+	if (sdata->dev) {
+		netif_addr_lock_bh(sdata->dev);
+		spin_lock_bh(&local->filter_lock);
+		__hw_addr_unsync(&local->mc_list, &sdata->dev->mc,
+				 sdata->dev->addr_len);
+		spin_unlock_bh(&local->filter_lock);
+		netif_addr_unlock_bh(sdata->dev);
 
-	ieee80211_configure_filter(local);
+		ieee80211_configure_filter(local);
+	}
 
 	del_timer_sync(&local->dynamic_ps_timer);
 	cancel_work_sync(&local->dynamic_ps_enable_work);
@@ -708,7 +732,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
 		struct ieee80211_sub_if_data *vlan, *tmpsdata;
 		struct beacon_data *old_beacon =
 			rtnl_dereference(sdata->u.ap.beacon);
-		struct sk_buff *old_probe_resp =
+		struct probe_resp *old_probe_resp =
 			rtnl_dereference(sdata->u.ap.probe_resp);
 
 		/* sdata_running will return false, so this will disable */
@@ -720,7 +744,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
 		RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
 		synchronize_rcu();
 		kfree(old_beacon);
-		kfree_skb(old_probe_resp);
+		kfree(old_probe_resp);
 
 		/* down all dependent devices, that is VLANs */
 		list_for_each_entry_safe(vlan, tmpsdata, &sdata->u.ap.vlans,
@@ -759,6 +783,10 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
 		ieee80211_adjust_monitor_flags(sdata, -1);
 		ieee80211_configure_filter(local);
 		break;
+	case NL80211_IFTYPE_P2P_DEVICE:
+		/* relies on synchronize_rcu() below */
+		rcu_assign_pointer(local->p2p_sdata, NULL);
+		/* fall through */
 	default:
 		flush_work(&sdata->work);
 		/*
@@ -771,14 +799,6 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
 		skb_queue_purge(&sdata->skb_queue);
 
 		/*
-		 * Disable beaconing here for mesh only, AP and IBSS
-		 * are already taken care of.
-		 */
-		if (sdata->vif.type == NL80211_IFTYPE_MESH_POINT)
-			ieee80211_bss_info_change_notify(sdata,
-				BSS_CHANGED_BEACON_ENABLED);
-
-		/*
 		 * Free all remaining keys, there shouldn't be any,
 		 * except maybe group keys in AP more or WDS?
 		 */
@@ -877,9 +897,8 @@ static void ieee80211_set_multicast_list(struct net_device *dev)
  * Called when the netdev is removed or, by the code below, before
  * the interface type changes.
  */
-static void ieee80211_teardown_sdata(struct net_device *dev)
+static void ieee80211_teardown_sdata(struct ieee80211_sub_if_data *sdata)
 {
-	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 	struct ieee80211_local *local = sdata->local;
 	int flushed;
 	int i;
@@ -900,6 +919,11 @@ static void ieee80211_teardown_sdata(struct net_device *dev)
 	WARN_ON(flushed);
 }
 
+static void ieee80211_uninit(struct net_device *dev)
+{
+	ieee80211_teardown_sdata(IEEE80211_DEV_TO_SUB_IF(dev));
+}
+
 static u16 ieee80211_netdev_select_queue(struct net_device *dev,
 					 struct sk_buff *skb)
 {
@@ -909,7 +933,7 @@ static u16 ieee80211_netdev_select_queue(struct net_device *dev,
 static const struct net_device_ops ieee80211_dataif_ops = {
 	.ndo_open		= ieee80211_open,
 	.ndo_stop		= ieee80211_stop,
-	.ndo_uninit		= ieee80211_teardown_sdata,
+	.ndo_uninit		= ieee80211_uninit,
 	.ndo_start_xmit		= ieee80211_subif_start_xmit,
 	.ndo_set_rx_mode	= ieee80211_set_multicast_list,
 	.ndo_change_mtu 	= ieee80211_change_mtu,
@@ -940,7 +964,7 @@ static u16 ieee80211_monitor_select_queue(struct net_device *dev,
 static const struct net_device_ops ieee80211_monitorif_ops = {
 	.ndo_open		= ieee80211_open,
 	.ndo_stop		= ieee80211_stop,
-	.ndo_uninit		= ieee80211_teardown_sdata,
+	.ndo_uninit		= ieee80211_uninit,
 	.ndo_start_xmit		= ieee80211_monitor_start_xmit,
 	.ndo_set_rx_mode	= ieee80211_set_multicast_list,
 	.ndo_change_mtu 	= ieee80211_change_mtu,
@@ -1099,7 +1123,6 @@ static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata,
 	/* and set some type-dependent values */
 	sdata->vif.type = type;
 	sdata->vif.p2p = false;
-	sdata->dev->netdev_ops = &ieee80211_dataif_ops;
 	sdata->wdev.iftype = type;
 
 	sdata->control_port_protocol = cpu_to_be16(ETH_P_PAE);
@@ -1107,8 +1130,11 @@ static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata,
 
 	sdata->noack_map = 0;
 
-	/* only monitor differs */
-	sdata->dev->type = ARPHRD_ETHER;
+	/* only monitor/p2p-device differ */
+	if (sdata->dev) {
+		sdata->dev->netdev_ops = &ieee80211_dataif_ops;
+		sdata->dev->type = ARPHRD_ETHER;
+	}
 
 	skb_queue_head_init(&sdata->skb_queue);
 	INIT_WORK(&sdata->work, ieee80211_iface_work);
@@ -1146,6 +1172,7 @@ static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata,
 		break;
 	case NL80211_IFTYPE_WDS:
 	case NL80211_IFTYPE_AP_VLAN:
+	case NL80211_IFTYPE_P2P_DEVICE:
 		break;
 	case NL80211_IFTYPE_UNSPECIFIED:
 	case NUM_NL80211_IFTYPES:
@@ -1156,18 +1183,6 @@ static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata,
 	ieee80211_debugfs_add_netdev(sdata);
 }
 
-static void ieee80211_clean_sdata(struct ieee80211_sub_if_data *sdata)
-{
-	switch (sdata->vif.type) {
-	case NL80211_IFTYPE_MESH_POINT:
-		mesh_path_flush_by_iface(sdata);
-		break;
-
-	default:
-		break;
-	}
-}
-
 static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata,
 					   enum nl80211_iftype type)
 {
@@ -1225,7 +1240,7 @@ static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata,
 
 	ieee80211_do_stop(sdata, false);
 
-	ieee80211_teardown_sdata(sdata->dev);
+	ieee80211_teardown_sdata(sdata);
 
 	ret = drv_change_interface(local, sdata, internal_type, p2p);
 	if (ret)
@@ -1240,7 +1255,7 @@ static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata,
 
 	ieee80211_setup_sdata(sdata, type);
 
-	err = ieee80211_do_open(sdata->dev, false);
+	err = ieee80211_do_open(&sdata->wdev, false);
 	WARN(err, "type change: do_open returned %d", err);
 
 	return ret;
@@ -1267,14 +1282,14 @@ int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
 			return ret;
 	} else {
 		/* Purge and reset type-dependent state. */
-		ieee80211_teardown_sdata(sdata->dev);
+		ieee80211_teardown_sdata(sdata);
 		ieee80211_setup_sdata(sdata, type);
 	}
 
 	/* reset some values that shouldn't be kept across type changes */
 	sdata->vif.bss_conf.basic_rates =
 		ieee80211_mandatory_rates(sdata->local,
-			sdata->local->hw.conf.channel->band);
+			sdata->local->oper_channel->band);
 	sdata->drop_unencrypted = 0;
 	if (type == NL80211_IFTYPE_STATION)
 		sdata->u.mgd.use_4addr = false;
@@ -1283,8 +1298,7 @@ int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
 }
 
 static void ieee80211_assign_perm_addr(struct ieee80211_local *local,
-				       struct net_device *dev,
-				       enum nl80211_iftype type)
+				       u8 *perm_addr, enum nl80211_iftype type)
 {
 	struct ieee80211_sub_if_data *sdata;
 	u64 mask, start, addr, val, inc;
@@ -1293,13 +1307,12 @@ static void ieee80211_assign_perm_addr(struct ieee80211_local *local,
 	int i;
 
 	/* default ... something at least */
-	memcpy(dev->perm_addr, local->hw.wiphy->perm_addr, ETH_ALEN);
+	memcpy(perm_addr, local->hw.wiphy->perm_addr, ETH_ALEN);
 
 	if (is_zero_ether_addr(local->hw.wiphy->addr_mask) &&
 	    local->hw.wiphy->n_addresses <= 1)
 		return;
 
-
 	mutex_lock(&local->iflist_mtx);
 
 	switch (type) {
@@ -1312,11 +1325,24 @@ static void ieee80211_assign_perm_addr(struct ieee80211_local *local,
 		list_for_each_entry(sdata, &local->interfaces, list) {
 			if (sdata->vif.type != NL80211_IFTYPE_AP)
 				continue;
-			memcpy(dev->perm_addr, sdata->vif.addr, ETH_ALEN);
+			memcpy(perm_addr, sdata->vif.addr, ETH_ALEN);
 			break;
 		}
 		/* keep default if no AP interface present */
 		break;
+	case NL80211_IFTYPE_P2P_CLIENT:
+	case NL80211_IFTYPE_P2P_GO:
+		if (local->hw.flags & IEEE80211_HW_P2P_DEV_ADDR_FOR_INTF) {
+			list_for_each_entry(sdata, &local->interfaces, list) {
+				if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE)
+					continue;
+				if (!ieee80211_sdata_running(sdata))
+					continue;
+				memcpy(perm_addr, sdata->vif.addr, ETH_ALEN);
+				goto out_unlock;
+			}
+		}
+		/* otherwise fall through */
 	default:
 		/* assign a new address if possible -- try n_addresses first */
 		for (i = 0; i < local->hw.wiphy->n_addresses; i++) {
@@ -1331,7 +1357,7 @@ static void ieee80211_assign_perm_addr(struct ieee80211_local *local,
 			}
 
 			if (!used) {
-				memcpy(dev->perm_addr,
+				memcpy(perm_addr,
 				       local->hw.wiphy->addresses[i].addr,
 				       ETH_ALEN);
 				break;
@@ -1382,7 +1408,7 @@ static void ieee80211_assign_perm_addr(struct ieee80211_local *local,
 			}
 
 			if (!used) {
-				memcpy(dev->perm_addr, tmp_addr, ETH_ALEN);
+				memcpy(perm_addr, tmp_addr, ETH_ALEN);
 				break;
 			}
 			addr = (start & ~mask) | (val & mask);
@@ -1391,6 +1417,7 @@ static void ieee80211_assign_perm_addr(struct ieee80211_local *local,
 		break;
 	}
 
+ out_unlock:
 	mutex_unlock(&local->iflist_mtx);
 }
 
@@ -1398,49 +1425,68 @@ int ieee80211_if_add(struct ieee80211_local *local, const char *name,
 		     struct wireless_dev **new_wdev, enum nl80211_iftype type,
 		     struct vif_params *params)
 {
-	struct net_device *ndev;
+	struct net_device *ndev = NULL;
 	struct ieee80211_sub_if_data *sdata = NULL;
 	int ret, i;
 	int txqs = 1;
 
 	ASSERT_RTNL();
 
-	if (local->hw.queues >= IEEE80211_NUM_ACS)
-		txqs = IEEE80211_NUM_ACS;
-
-	ndev = alloc_netdev_mqs(sizeof(*sdata) + local->hw.vif_data_size,
-				name, ieee80211_if_setup, txqs, 1);
-	if (!ndev)
-		return -ENOMEM;
-	dev_net_set(ndev, wiphy_net(local->hw.wiphy));
-
-	ndev->needed_headroom = local->tx_headroom +
-				4*6 /* four MAC addresses */
-				+ 2 + 2 + 2 + 2 /* ctl, dur, seq, qos */
-				+ 6 /* mesh */
-				+ 8 /* rfc1042/bridge tunnel */
-				- ETH_HLEN /* ethernet hard_header_len */
-				+ IEEE80211_ENCRYPT_HEADROOM;
-	ndev->needed_tailroom = IEEE80211_ENCRYPT_TAILROOM;
-
-	ret = dev_alloc_name(ndev, ndev->name);
-	if (ret < 0)
-		goto fail;
-
-	ieee80211_assign_perm_addr(local, ndev, type);
-	memcpy(ndev->dev_addr, ndev->perm_addr, ETH_ALEN);
-	SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy));
-
-	/* don't use IEEE80211_DEV_TO_SUB_IF because it checks too much */
-	sdata = netdev_priv(ndev);
-	ndev->ieee80211_ptr = &sdata->wdev;
-	memcpy(sdata->vif.addr, ndev->dev_addr, ETH_ALEN);
-	memcpy(sdata->name, ndev->name, IFNAMSIZ);
+	if (type == NL80211_IFTYPE_P2P_DEVICE) {
+		struct wireless_dev *wdev;
+
+		sdata = kzalloc(sizeof(*sdata) + local->hw.vif_data_size,
+				GFP_KERNEL);
+		if (!sdata)
+			return -ENOMEM;
+		wdev = &sdata->wdev;
+
+		sdata->dev = NULL;
+		strlcpy(sdata->name, name, IFNAMSIZ);
+		ieee80211_assign_perm_addr(local, wdev->address, type);
+		memcpy(sdata->vif.addr, wdev->address, ETH_ALEN);
+	} else {
+		if (local->hw.queues >= IEEE80211_NUM_ACS)
+			txqs = IEEE80211_NUM_ACS;
+
+		ndev = alloc_netdev_mqs(sizeof(*sdata) +
+					local->hw.vif_data_size,
+					name, ieee80211_if_setup, txqs, 1);
+		if (!ndev)
+			return -ENOMEM;
+		dev_net_set(ndev, wiphy_net(local->hw.wiphy));
+
+		ndev->needed_headroom = local->tx_headroom +
+					4*6 /* four MAC addresses */
+					+ 2 + 2 + 2 + 2 /* ctl, dur, seq, qos */
+					+ 6 /* mesh */
+					+ 8 /* rfc1042/bridge tunnel */
+					- ETH_HLEN /* ethernet hard_header_len */
+					+ IEEE80211_ENCRYPT_HEADROOM;
+		ndev->needed_tailroom = IEEE80211_ENCRYPT_TAILROOM;
+
+		ret = dev_alloc_name(ndev, ndev->name);
+		if (ret < 0) {
+			free_netdev(ndev);
+			return ret;
+		}
+
+		ieee80211_assign_perm_addr(local, ndev->perm_addr, type);
+		memcpy(ndev->dev_addr, ndev->perm_addr, ETH_ALEN);
+		SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy));
+
+		/* don't use IEEE80211_DEV_TO_SUB_IF -- it checks too much */
+		sdata = netdev_priv(ndev);
+		ndev->ieee80211_ptr = &sdata->wdev;
+		memcpy(sdata->vif.addr, ndev->dev_addr, ETH_ALEN);
+		memcpy(sdata->name, ndev->name, IFNAMSIZ);
+
+		sdata->dev = ndev;
+	}
 
 	/* initialise type-independent data */
 	sdata->wdev.wiphy = local->hw.wiphy;
 	sdata->local = local;
-	sdata->dev = ndev;
 #ifdef CONFIG_INET
 	sdata->arp_filter_state = true;
 #endif
@@ -1469,17 +1515,21 @@ int ieee80211_if_add(struct ieee80211_local *local, const char *name,
 	/* setup type-dependent data */
 	ieee80211_setup_sdata(sdata, type);
 
-	if (params) {
-		ndev->ieee80211_ptr->use_4addr = params->use_4addr;
-		if (type == NL80211_IFTYPE_STATION)
-			sdata->u.mgd.use_4addr = params->use_4addr;
-	}
+	if (ndev) {
+		if (params) {
+			ndev->ieee80211_ptr->use_4addr = params->use_4addr;
+			if (type == NL80211_IFTYPE_STATION)
+				sdata->u.mgd.use_4addr = params->use_4addr;
+		}
 
-	ndev->features |= local->hw.netdev_features;
+		ndev->features |= local->hw.netdev_features;
 
-	ret = register_netdevice(ndev);
-	if (ret)
-		goto fail;
+		ret = register_netdevice(ndev);
+		if (ret) {
+			free_netdev(ndev);
+			return ret;
+		}
+	}
 
 	mutex_lock(&local->iflist_mtx);
 	list_add_tail_rcu(&sdata->list, &local->interfaces);
@@ -1489,10 +1539,6 @@ int ieee80211_if_add(struct ieee80211_local *local, const char *name,
 		*new_wdev = &sdata->wdev;
 
 	return 0;
-
- fail:
-	free_netdev(ndev);
-	return ret;
 }
 
 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata)
@@ -1503,11 +1549,22 @@ void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata)
 	list_del_rcu(&sdata->list);
 	mutex_unlock(&sdata->local->iflist_mtx);
 
-	/* clean up type-dependent data */
-	ieee80211_clean_sdata(sdata);
-
 	synchronize_rcu();
-	unregister_netdevice(sdata->dev);
+
+	if (sdata->dev) {
+		unregister_netdevice(sdata->dev);
+	} else {
+		cfg80211_unregister_wdev(&sdata->wdev);
+		kfree(sdata);
+	}
+}
+
+void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata)
+{
+	if (WARN_ON_ONCE(!test_bit(SDATA_STATE_RUNNING, &sdata->state)))
+		return;
+	ieee80211_do_stop(sdata, true);
+	ieee80211_teardown_sdata(sdata);
 }
 
 /*
@@ -1518,6 +1575,7 @@ void ieee80211_remove_interfaces(struct ieee80211_local *local)
 {
 	struct ieee80211_sub_if_data *sdata, *tmp;
 	LIST_HEAD(unreg_list);
+	LIST_HEAD(wdev_list);
 
 	ASSERT_RTNL();
 
@@ -1525,13 +1583,20 @@ void ieee80211_remove_interfaces(struct ieee80211_local *local)
 	list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) {
 		list_del(&sdata->list);
 
-		ieee80211_clean_sdata(sdata);
-
-		unregister_netdevice_queue(sdata->dev, &unreg_list);
+		if (sdata->dev)
+			unregister_netdevice_queue(sdata->dev, &unreg_list);
+		else
+			list_add(&sdata->list, &wdev_list);
 	}
 	mutex_unlock(&local->iflist_mtx);
 	unregister_netdevice_many(&unreg_list);
 	list_del(&unreg_list);
+
+	list_for_each_entry_safe(sdata, tmp, &wdev_list, list) {
+		list_del(&sdata->list);
+		cfg80211_unregister_wdev(&sdata->wdev);
+		kfree(sdata);
+	}
 }
 
 static int netdev_notify(struct notifier_block *nb,
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index c26e231c733a..bd7529363193 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -207,6 +207,10 @@ void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
 		sdata->vif.bss_conf.bssid = NULL;
 	else if (ieee80211_vif_is_mesh(&sdata->vif)) {
 		sdata->vif.bss_conf.bssid = zero;
+	} else if (sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE) {
+		sdata->vif.bss_conf.bssid = sdata->vif.addr;
+		WARN_ONCE(changed & ~(BSS_CHANGED_IDLE),
+			  "P2P Device BSS changed %#x", changed);
 	} else {
 		WARN_ON(1);
 		return;
@@ -514,6 +518,11 @@ ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = {
 			BIT(IEEE80211_STYPE_AUTH >> 4) |
 			BIT(IEEE80211_STYPE_DEAUTH >> 4),
 	},
+	[NL80211_IFTYPE_P2P_DEVICE] = {
+		.tx = 0xffff,
+		.rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
+			BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
+	},
 };
 
 static const struct ieee80211_ht_cap mac80211_ht_capa_mod_mask = {
@@ -536,6 +545,11 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
 	int priv_size, i;
 	struct wiphy *wiphy;
 
+	if (WARN_ON(!ops->tx || !ops->start || !ops->stop || !ops->config ||
+		    !ops->add_interface || !ops->remove_interface ||
+		    !ops->configure_filter))
+		return NULL;
+
 	if (WARN_ON(ops->sta_state && (ops->sta_add || ops->sta_remove)))
 		return NULL;
 
@@ -588,13 +602,6 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
 
 	local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN);
 
-	BUG_ON(!ops->tx);
-	BUG_ON(!ops->start);
-	BUG_ON(!ops->stop);
-	BUG_ON(!ops->config);
-	BUG_ON(!ops->add_interface);
-	BUG_ON(!ops->remove_interface);
-	BUG_ON(!ops->configure_filter);
 	local->ops = ops;
 
 	/* set up some defaults */
diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
index 0e2f83e71277..ff0296c7bab8 100644
--- a/net/mac80211/mesh.c
+++ b/net/mac80211/mesh.c
@@ -109,11 +109,11 @@ bool mesh_matches_local(struct ieee80211_sub_if_data *sdata,
 
 	/* Disallow HT40+/- mismatch */
 	if (ie->ht_operation &&
-	    (local->_oper_channel_type == NL80211_CHAN_HT40MINUS ||
-	    local->_oper_channel_type == NL80211_CHAN_HT40PLUS) &&
+	    (sdata->vif.bss_conf.channel_type == NL80211_CHAN_HT40MINUS ||
+	     sdata->vif.bss_conf.channel_type == NL80211_CHAN_HT40PLUS) &&
 	    (sta_channel_type == NL80211_CHAN_HT40MINUS ||
 	     sta_channel_type == NL80211_CHAN_HT40PLUS) &&
-	    local->_oper_channel_type != sta_channel_type)
+	    sdata->vif.bss_conf.channel_type != sta_channel_type)
 		goto mismatch;
 
 	return true;
@@ -355,17 +355,18 @@ int mesh_add_ds_params_ie(struct sk_buff *skb,
 {
 	struct ieee80211_local *local = sdata->local;
 	struct ieee80211_supported_band *sband;
+	struct ieee80211_channel *chan = local->oper_channel;
 	u8 *pos;
 
 	if (skb_tailroom(skb) < 3)
 		return -ENOMEM;
 
-	sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+	sband = local->hw.wiphy->bands[chan->band];
 	if (sband->band == IEEE80211_BAND_2GHZ) {
 		pos = skb_put(skb, 2 + 1);
 		*pos++ = WLAN_EID_DS_PARAMS;
 		*pos++ = 1;
-		*pos++ = ieee80211_frequency_to_channel(local->hw.conf.channel->center_freq);
+		*pos++ = ieee80211_frequency_to_channel(chan->center_freq);
 	}
 
 	return 0;
@@ -380,7 +381,7 @@ int mesh_add_ht_cap_ie(struct sk_buff *skb,
 
 	sband = local->hw.wiphy->bands[local->oper_channel->band];
 	if (!sband->ht_cap.ht_supported ||
-	    local->_oper_channel_type == NL80211_CHAN_NO_HT)
+	    sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT)
 		return 0;
 
 	if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_ht_cap))
@@ -397,7 +398,8 @@ int mesh_add_ht_oper_ie(struct sk_buff *skb,
 {
 	struct ieee80211_local *local = sdata->local;
 	struct ieee80211_channel *channel = local->oper_channel;
-	enum nl80211_channel_type channel_type = local->_oper_channel_type;
+	enum nl80211_channel_type channel_type =
+				sdata->vif.bss_conf.channel_type;
 	struct ieee80211_supported_band *sband =
 				local->hw.wiphy->bands[channel->band];
 	struct ieee80211_sta_ht_cap *ht_cap = &sband->ht_cap;
@@ -608,12 +610,14 @@ void ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata)
 	sdata->vif.bss_conf.beacon_int = MESH_DEFAULT_BEACON_INTERVAL;
 	sdata->vif.bss_conf.basic_rates =
 		ieee80211_mandatory_rates(sdata->local,
-					  sdata->local->hw.conf.channel->band);
+					  sdata->local->oper_channel->band);
 	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON |
 						BSS_CHANGED_BEACON_ENABLED |
 						BSS_CHANGED_HT |
 						BSS_CHANGED_BASIC_RATES |
 						BSS_CHANGED_BEACON_INT);
+
+	netif_carrier_on(sdata->dev);
 }
 
 void ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata)
@@ -621,9 +625,15 @@ void ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata)
 	struct ieee80211_local *local = sdata->local;
 	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
 
+	netif_carrier_off(sdata->dev);
+
+	/* stop the beacon */
 	ifmsh->mesh_id_len = 0;
 	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
-	sta_info_flush(local, NULL);
+
+	/* flush STAs and mpaths on this iface */
+	sta_info_flush(sdata->local, sdata);
+	mesh_path_flush_by_iface(sdata);
 
 	del_timer_sync(&sdata->u.mesh.housekeeping_timer);
 	del_timer_sync(&sdata->u.mesh.mesh_path_root_timer);
diff --git a/net/mac80211/mesh.h b/net/mac80211/mesh.h
index 13fd5b5fdb0a..25d0f17dec71 100644
--- a/net/mac80211/mesh.h
+++ b/net/mac80211/mesh.h
@@ -215,6 +215,9 @@ struct mesh_rmc {
 /* Maximum number of paths per interface */
 #define MESH_MAX_MPATHS		1024
 
+/* Number of frames buffered per destination for unresolved destinations */
+#define MESH_FRAME_QUEUE_LEN	10
+
 /* Public interfaces */
 /* Various */
 int ieee80211_fill_mesh_addresses(struct ieee80211_hdr *hdr, __le16 *fc,
diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c
index 494bc39f61a4..47aeee2d8db1 100644
--- a/net/mac80211/mesh_hwmp.c
+++ b/net/mac80211/mesh_hwmp.c
@@ -17,8 +17,6 @@
 #define MAX_METRIC	0xffffffff
 #define ARITH_SHIFT	8
 
-/* Number of frames buffered per destination for unresolved destinations */
-#define MESH_FRAME_QUEUE_LEN	10
 #define MAX_PREQ_QUEUE_LEN	64
 
 /* Destination only */
diff --git a/net/mac80211/mesh_pathtbl.c b/net/mac80211/mesh_pathtbl.c
index 075bc535c601..aa749818860e 100644
--- a/net/mac80211/mesh_pathtbl.c
+++ b/net/mac80211/mesh_pathtbl.c
@@ -203,23 +203,17 @@ void mesh_path_assign_nexthop(struct mesh_path *mpath, struct sta_info *sta)
 {
 	struct sk_buff *skb;
 	struct ieee80211_hdr *hdr;
-	struct sk_buff_head tmpq;
 	unsigned long flags;
 
 	rcu_assign_pointer(mpath->next_hop, sta);
 
-	__skb_queue_head_init(&tmpq);
-
 	spin_lock_irqsave(&mpath->frame_queue.lock, flags);
-
-	while ((skb = __skb_dequeue(&mpath->frame_queue)) != NULL) {
+	skb_queue_walk(&mpath->frame_queue, skb) {
 		hdr = (struct ieee80211_hdr *) skb->data;
 		memcpy(hdr->addr1, sta->sta.addr, ETH_ALEN);
 		memcpy(hdr->addr2, mpath->sdata->vif.addr, ETH_ALEN);
-		__skb_queue_tail(&tmpq, skb);
 	}
 
-	skb_queue_splice(&tmpq, &mpath->frame_queue);
 	spin_unlock_irqrestore(&mpath->frame_queue.lock, flags);
 }
 
@@ -285,40 +279,42 @@ static void mesh_path_move_to_queue(struct mesh_path *gate_mpath,
 				    struct mesh_path *from_mpath,
 				    bool copy)
 {
-	struct sk_buff *skb, *cp_skb = NULL;
-	struct sk_buff_head gateq, failq;
+	struct sk_buff *skb, *fskb, *tmp;
+	struct sk_buff_head failq;
 	unsigned long flags;
-	int num_skbs;
 
 	BUG_ON(gate_mpath == from_mpath);
 	BUG_ON(!gate_mpath->next_hop);
 
-	__skb_queue_head_init(&gateq);
 	__skb_queue_head_init(&failq);
 
 	spin_lock_irqsave(&from_mpath->frame_queue.lock, flags);
 	skb_queue_splice_init(&from_mpath->frame_queue, &failq);
 	spin_unlock_irqrestore(&from_mpath->frame_queue.lock, flags);
 
-	num_skbs = skb_queue_len(&failq);
-
-	while (num_skbs--) {
-		skb = __skb_dequeue(&failq);
-		if (copy) {
-			cp_skb = skb_copy(skb, GFP_ATOMIC);
-			if (cp_skb)
-				__skb_queue_tail(&failq, cp_skb);
+	skb_queue_walk_safe(&failq, fskb, tmp) {
+		if (skb_queue_len(&gate_mpath->frame_queue) >=
+				  MESH_FRAME_QUEUE_LEN) {
+			mpath_dbg(gate_mpath->sdata, "mpath queue full!\n");
+			break;
 		}
 
+		skb = skb_copy(fskb, GFP_ATOMIC);
+		if (WARN_ON(!skb))
+			break;
+
 		prepare_for_gate(skb, gate_mpath->dst, gate_mpath);
-		__skb_queue_tail(&gateq, skb);
+		skb_queue_tail(&gate_mpath->frame_queue, skb);
+
+		if (copy)
+			continue;
+
+		__skb_unlink(fskb, &failq);
+		kfree_skb(fskb);
 	}
 
-	spin_lock_irqsave(&gate_mpath->frame_queue.lock, flags);
-	skb_queue_splice(&gateq, &gate_mpath->frame_queue);
 	mpath_dbg(gate_mpath->sdata, "Mpath queue for gate %pM has %d frames\n",
 		  gate_mpath->dst, skb_queue_len(&gate_mpath->frame_queue));
-	spin_unlock_irqrestore(&gate_mpath->frame_queue.lock, flags);
 
 	if (!copy)
 		return;
@@ -531,7 +527,7 @@ int mesh_path_add(u8 *dst, struct ieee80211_sub_if_data *sdata)
 
 	read_lock_bh(&pathtbl_resize_lock);
 	memcpy(new_mpath->dst, dst, ETH_ALEN);
-	memset(new_mpath->rann_snd_addr, 0xff, ETH_ALEN);
+	eth_broadcast_addr(new_mpath->rann_snd_addr);
 	new_mpath->is_root = false;
 	new_mpath->sdata = sdata;
 	new_mpath->flags = 0;
diff --git a/net/mac80211/mesh_plink.c b/net/mac80211/mesh_plink.c
index f20e9f26d137..9d7ad366ef09 100644
--- a/net/mac80211/mesh_plink.c
+++ b/net/mac80211/mesh_plink.c
@@ -117,7 +117,7 @@ static u32 mesh_set_ht_prot_mode(struct ieee80211_sub_if_data *sdata)
 	u16 ht_opmode;
 	bool non_ht_sta = false, ht20_sta = false;
 
-	if (local->_oper_channel_type == NL80211_CHAN_NO_HT)
+	if (sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT)
 		return 0;
 
 	rcu_read_lock();
@@ -147,7 +147,8 @@ out:
 
 	if (non_ht_sta)
 		ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED;
-	else if (ht20_sta && local->_oper_channel_type > NL80211_CHAN_HT20)
+	else if (ht20_sta &&
+		 sdata->vif.bss_conf.channel_type > NL80211_CHAN_HT20)
 		ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_20MHZ;
 	else
 		ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_NONE;
@@ -215,12 +216,14 @@ static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata,
 		u8 *da, __le16 llid, __le16 plid, __le16 reason) {
 	struct ieee80211_local *local = sdata->local;
 	struct sk_buff *skb;
+	struct ieee80211_tx_info *info;
 	struct ieee80211_mgmt *mgmt;
 	bool include_plid = false;
 	u16 peering_proto = 0;
 	u8 *pos, ie_len = 4;
 	int hdr_len = offsetof(struct ieee80211_mgmt, u.action.u.self_prot) +
 		      sizeof(mgmt->u.action.u.self_prot);
+	int err = -ENOMEM;
 
 	skb = dev_alloc_skb(local->tx_headroom +
 			    hdr_len +
@@ -236,6 +239,7 @@ static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata,
 			    sdata->u.mesh.ie_len);
 	if (!skb)
 		return -1;
+	info = IEEE80211_SKB_CB(skb);
 	skb_reserve(skb, local->tx_headroom);
 	mgmt = (struct ieee80211_mgmt *) skb_put(skb, hdr_len);
 	memset(mgmt, 0, hdr_len);
@@ -256,15 +260,18 @@ static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata,
 			pos = skb_put(skb, 2);
 			memcpy(pos + 2, &plid, 2);
 		}
-		if (ieee80211_add_srates_ie(sdata, skb, true) ||
-		    ieee80211_add_ext_srates_ie(sdata, skb, true) ||
+		if (ieee80211_add_srates_ie(sdata, skb, true,
+					    local->oper_channel->band) ||
+		    ieee80211_add_ext_srates_ie(sdata, skb, true,
+						local->oper_channel->band) ||
 		    mesh_add_rsn_ie(skb, sdata) ||
 		    mesh_add_meshid_ie(skb, sdata) ||
 		    mesh_add_meshconf_ie(skb, sdata))
-			return -1;
+			goto free;
 	} else {	/* WLAN_SP_MESH_PEERING_CLOSE */
+		info->flags |= IEEE80211_TX_CTL_NO_ACK;
 		if (mesh_add_meshid_ie(skb, sdata))
-			return -1;
+			goto free;
 	}
 
 	/* Add Mesh Peering Management element */
@@ -283,11 +290,12 @@ static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata,
 		ie_len += 2;	/* reason code */
 		break;
 	default:
-		return -EINVAL;
+		err = -EINVAL;
+		goto free;
 	}
 
 	if (WARN_ON(skb_tailroom(skb) < 2 + ie_len))
-		return -ENOMEM;
+		goto free;
 
 	pos = skb_put(skb, 2 + ie_len);
 	*pos++ = WLAN_EID_PEER_MGMT;
@@ -308,14 +316,17 @@ static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata,
 	if (action != WLAN_SP_MESH_PEERING_CLOSE) {
 		if (mesh_add_ht_cap_ie(skb, sdata) ||
 		    mesh_add_ht_oper_ie(skb, sdata))
-			return -1;
+			goto free;
 	}
 
 	if (mesh_add_vendor_ies(skb, sdata))
-		return -1;
+		goto free;
 
 	ieee80211_tx_skb(sdata, skb);
 	return 0;
+free:
+	kfree_skb(skb);
+	return err;
 }
 
 /**
@@ -360,9 +371,14 @@ static struct sta_info *mesh_peer_init(struct ieee80211_sub_if_data *sdata,
 
 	spin_lock_bh(&sta->lock);
 	sta->last_rx = jiffies;
+	if (sta->plink_state == NL80211_PLINK_ESTAB) {
+		spin_unlock_bh(&sta->lock);
+		return sta;
+	}
+
 	sta->sta.supp_rates[band] = rates;
 	if (elems->ht_cap_elem &&
-	    sdata->local->_oper_channel_type != NL80211_CHAN_NO_HT)
+	    sdata->vif.bss_conf.channel_type != NL80211_CHAN_NO_HT)
 		ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
 						  elems->ht_cap_elem,
 						  &sta->sta.ht_cap);
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index a4a5acdbaa4d..a8cf70bf1cba 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -146,6 +146,9 @@ void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata)
 	if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
 		return;
 
+	if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
+		return;
+
 	mod_timer(&sdata->u.mgd.bcn_mon_timer,
 		  round_jiffies_up(jiffies + sdata->u.mgd.beacon_timeout));
 }
@@ -182,15 +185,15 @@ static u32 ieee80211_config_ht_tx(struct ieee80211_sub_if_data *sdata,
 	u16 ht_opmode;
 	bool disable_40 = false;
 
-	sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+	sband = local->hw.wiphy->bands[local->oper_channel->band];
 
 	switch (sdata->vif.bss_conf.channel_type) {
 	case NL80211_CHAN_HT40PLUS:
-		if (local->hw.conf.channel->flags & IEEE80211_CHAN_NO_HT40PLUS)
+		if (local->oper_channel->flags & IEEE80211_CHAN_NO_HT40PLUS)
 			disable_40 = true;
 		break;
 	case NL80211_CHAN_HT40MINUS:
-		if (local->hw.conf.channel->flags & IEEE80211_CHAN_NO_HT40MINUS)
+		if (local->oper_channel->flags & IEEE80211_CHAN_NO_HT40MINUS)
 			disable_40 = true;
 		break;
 	default:
@@ -326,6 +329,26 @@ static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data *sdata,
 	ieee80211_ie_build_ht_cap(pos, &ht_cap, cap);
 }
 
+static void ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata,
+				 struct sk_buff *skb,
+				 struct ieee80211_supported_band *sband)
+{
+	u8 *pos;
+	u32 cap;
+	struct ieee80211_sta_vht_cap vht_cap;
+
+	BUILD_BUG_ON(sizeof(vht_cap) != sizeof(sband->vht_cap));
+
+	memcpy(&vht_cap, &sband->vht_cap, sizeof(vht_cap));
+
+	/* determine capability flags */
+	cap = vht_cap.cap;
+
+	/* reserve and fill IE */
+	pos = skb_put(skb, sizeof(struct ieee80211_vht_capabilities) + 2);
+	ieee80211_ie_build_vht_cap(pos, &vht_cap, cap);
+}
+
 static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
 {
 	struct ieee80211_local *local = sdata->local;
@@ -371,6 +394,7 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
 			4 + /* power capability */
 			2 + 2 * sband->n_channels + /* supported channels */
 			2 + sizeof(struct ieee80211_ht_cap) + /* HT */
+			2 + sizeof(struct ieee80211_vht_capabilities) + /* VHT */
 			assoc_data->ie_len + /* extra IEs */
 			9, /* WMM */
 			GFP_KERNEL);
@@ -503,6 +527,9 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
 		ieee80211_add_ht_ie(sdata, skb, assoc_data->ap_ht_param,
 				    sband, local->oper_channel, ifmgd->ap_smps);
 
+	if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
+		ieee80211_add_vht_ie(sdata, skb, sband);
+
 	/* if present, add any custom non-vendor IEs that go after HT */
 	if (assoc_data->ie_len && assoc_data->ie) {
 		noffset = ieee80211_ie_split_vendor(assoc_data->ie,
@@ -583,8 +610,6 @@ static void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
 			IEEE80211_SKB_CB(skb)->flags |=
 				IEEE80211_TX_INTFL_DONT_ENCRYPT;
 
-		drv_mgd_prepare_tx(local, sdata);
-
 		ieee80211_tx_skb(sdata, skb);
 	}
 }
@@ -687,6 +712,7 @@ static void ieee80211_chswitch_work(struct work_struct *work)
 	/* XXX: shouldn't really modify cfg80211-owned data! */
 	ifmgd->associated->channel = sdata->local->oper_channel;
 
+	/* XXX: wait for a beacon first? */
 	ieee80211_wake_queues_by_reason(&sdata->local->hw,
 					IEEE80211_QUEUE_STOP_REASON_CSA);
  out:
@@ -763,36 +789,32 @@ void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
 
 	sdata->local->csa_channel = new_ch;
 
+	ifmgd->flags |= IEEE80211_STA_CSA_RECEIVED;
+
+	if (sw_elem->mode)
+		ieee80211_stop_queues_by_reason(&sdata->local->hw,
+				IEEE80211_QUEUE_STOP_REASON_CSA);
+
 	if (sdata->local->ops->channel_switch) {
 		/* use driver's channel switch callback */
-		struct ieee80211_channel_switch ch_switch;
-		memset(&ch_switch, 0, sizeof(ch_switch));
-		ch_switch.timestamp = timestamp;
-		if (sw_elem->mode) {
-			ch_switch.block_tx = true;
-			ieee80211_stop_queues_by_reason(&sdata->local->hw,
-					IEEE80211_QUEUE_STOP_REASON_CSA);
-		}
-		ch_switch.channel = new_ch;
-		ch_switch.count = sw_elem->count;
-		ifmgd->flags |= IEEE80211_STA_CSA_RECEIVED;
+		struct ieee80211_channel_switch ch_switch = {
+			.timestamp = timestamp,
+			.block_tx = sw_elem->mode,
+			.channel = new_ch,
+			.count = sw_elem->count,
+		};
+
 		drv_channel_switch(sdata->local, &ch_switch);
 		return;
 	}
 
 	/* channel switch handled in software */
-	if (sw_elem->count <= 1) {
+	if (sw_elem->count <= 1)
 		ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work);
-	} else {
-		if (sw_elem->mode)
-			ieee80211_stop_queues_by_reason(&sdata->local->hw,
-					IEEE80211_QUEUE_STOP_REASON_CSA);
-		ifmgd->flags |= IEEE80211_STA_CSA_RECEIVED;
+	else
 		mod_timer(&ifmgd->chswitch_timer,
-			  jiffies +
-			  msecs_to_jiffies(sw_elem->count *
-					   cbss->beacon_interval));
-	}
+			  TU_TO_EXP_TIME(sw_elem->count *
+					 cbss->beacon_interval));
 }
 
 static void ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata,
@@ -1007,6 +1029,16 @@ void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency)
 	ieee80211_change_ps(local);
 }
 
+void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata)
+{
+	bool ps_allowed = ieee80211_powersave_allowed(sdata);
+
+	if (sdata->vif.bss_conf.ps != ps_allowed) {
+		sdata->vif.bss_conf.ps = ps_allowed;
+		ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_PS);
+	}
+}
+
 void ieee80211_dynamic_ps_disable_work(struct work_struct *work)
 {
 	struct ieee80211_local *local =
@@ -1239,7 +1271,7 @@ static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata,
 	}
 
 	use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME);
-	if (sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ)
+	if (sdata->local->oper_channel->band == IEEE80211_BAND_5GHZ)
 		use_short_slot = true;
 
 	if (use_protection != bss_conf->use_cts_prot) {
@@ -1310,6 +1342,8 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
 	ieee80211_recalc_smps(local);
 	mutex_unlock(&local->iflist_mtx);
 
+	ieee80211_recalc_ps_vif(sdata);
+
 	netif_tx_start_all_queues(sdata->dev);
 	netif_carrier_on(sdata->dev);
 }
@@ -1371,6 +1405,9 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
 	}
 	local->ps_sdata = NULL;
 
+	/* disable per-vif ps */
+	ieee80211_recalc_ps_vif(sdata);
+
 	/* flush out any pending frame (e.g. DELBA) before deauth/disassoc */
 	if (tx)
 		drv_flush(local, false);
@@ -1542,7 +1579,8 @@ static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata)
 			ssid_len = ssid[1];
 
 		ieee80211_send_probe_req(sdata, dst, ssid + 2, ssid_len, NULL,
-					 0, (u32) -1, true, false);
+					 0, (u32) -1, true, false,
+					 ifmgd->associated->channel);
 	}
 
 	ifmgd->probe_timeout = jiffies + msecs_to_jiffies(probe_wait_ms);
@@ -1645,7 +1683,9 @@ struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw,
 		ssid_len = ssid[1];
 
 	skb = ieee80211_build_probe_req(sdata, cbss->bssid,
-					(u32) -1, ssid + 2, ssid_len,
+					(u32) -1,
+					sdata->local->oper_channel,
+					ssid + 2, ssid_len,
 					NULL, 0, true);
 
 	return skb;
@@ -1656,7 +1696,6 @@ static void __ieee80211_connection_loss(struct ieee80211_sub_if_data *sdata)
 {
 	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 	struct ieee80211_local *local = sdata->local;
-	u8 bssid[ETH_ALEN];
 	u8 frame_buf[DEAUTH_DISASSOC_LEN];
 
 	mutex_lock(&ifmgd->mtx);
@@ -1665,9 +1704,8 @@ static void __ieee80211_connection_loss(struct ieee80211_sub_if_data *sdata)
 		return;
 	}
 
-	memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
-
-	sdata_info(sdata, "Connection to AP %pM lost\n", bssid);
+	sdata_info(sdata, "Connection to AP %pM lost\n",
+		   ifmgd->associated->bssid);
 
 	ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
 			       WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
@@ -1685,7 +1723,7 @@ static void __ieee80211_connection_loss(struct ieee80211_sub_if_data *sdata)
 	mutex_unlock(&local->mtx);
 }
 
-void ieee80211_beacon_connection_loss_work(struct work_struct *work)
+static void ieee80211_beacon_connection_loss_work(struct work_struct *work)
 {
 	struct ieee80211_sub_if_data *sdata =
 		container_of(work, struct ieee80211_sub_if_data,
@@ -2232,14 +2270,10 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
 		mutex_unlock(&local->iflist_mtx);
 	}
 
-	if (elems->ch_switch_elem && (elems->ch_switch_elem_len == 3) &&
-	    (memcmp(mgmt->bssid, sdata->u.mgd.associated->bssid,
-							ETH_ALEN) == 0)) {
-		struct ieee80211_channel_sw_ie *sw_elem =
-			(struct ieee80211_channel_sw_ie *)elems->ch_switch_elem;
-		ieee80211_sta_process_chanswitch(sdata, sw_elem,
+	if (elems->ch_switch_ie &&
+	    memcmp(mgmt->bssid, sdata->u.mgd.associated->bssid, ETH_ALEN) == 0)
+		ieee80211_sta_process_chanswitch(sdata, elems->ch_switch_ie,
 						 bss, rx_status->mactime);
-	}
 }
 
 
@@ -2326,7 +2360,7 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
 	if (baselen > len)
 		return;
 
-	if (rx_status->freq != local->hw.conf.channel->center_freq)
+	if (rx_status->freq != local->oper_channel->center_freq)
 		return;
 
 	if (ifmgd->assoc_data && !ifmgd->assoc_data->have_beacon &&
@@ -2490,7 +2524,7 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
 	    !(ifmgd->flags & IEEE80211_STA_DISABLE_11N)) {
 		struct ieee80211_supported_band *sband;
 
-		sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+		sband = local->hw.wiphy->bands[local->oper_channel->band];
 
 		changed |= ieee80211_config_ht_tx(sdata, elems.ht_operation,
 						  bssid, true);
@@ -2673,7 +2707,8 @@ static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata)
 		 * will not answer to direct packet in unassociated state.
 		 */
 		ieee80211_send_probe_req(sdata, NULL, ssidie + 2, ssidie[1],
-					 NULL, 0, (u32) -1, true, false);
+					 NULL, 0, (u32) -1, true, false,
+					 auth_data->bss->channel);
 	}
 
 	auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT;
@@ -3000,41 +3035,17 @@ int ieee80211_max_network_latency(struct notifier_block *nb,
 	return 0;
 }
 
-static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
-				     struct cfg80211_bss *cbss, bool assoc)
+static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata,
+				  struct cfg80211_bss *cbss)
 {
 	struct ieee80211_local *local = sdata->local;
 	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
-	struct ieee80211_bss *bss = (void *)cbss->priv;
-	struct sta_info *sta = NULL;
-	bool have_sta = false;
-	int err;
 	int ht_cfreq;
 	enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
 	const u8 *ht_oper_ie;
 	const struct ieee80211_ht_operation *ht_oper = NULL;
 	struct ieee80211_supported_band *sband;
 
-	if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data))
-		return -EINVAL;
-
-	if (assoc) {
-		rcu_read_lock();
-		have_sta = sta_info_get(sdata, cbss->bssid);
-		rcu_read_unlock();
-	}
-
-	if (!have_sta) {
-		sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL);
-		if (!sta)
-			return -ENOMEM;
-	}
-
-	mutex_lock(&local->mtx);
-	ieee80211_recalc_idle(sdata->local);
-	mutex_unlock(&local->mtx);
-
-	/* switch to the right channel */
 	sband = local->hw.wiphy->bands[cbss->channel->band];
 
 	ifmgd->flags &= ~IEEE80211_STA_DISABLE_40MHZ;
@@ -3097,10 +3108,51 @@ static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
 	local->oper_channel = cbss->channel;
 	ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
 
-	if (sta) {
+	return 0;
+}
+
+static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
+				     struct cfg80211_bss *cbss, bool assoc)
+{
+	struct ieee80211_local *local = sdata->local;
+	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+	struct ieee80211_bss *bss = (void *)cbss->priv;
+	struct sta_info *new_sta = NULL;
+	bool have_sta = false;
+	int err;
+
+	if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data))
+		return -EINVAL;
+
+	if (assoc) {
+		rcu_read_lock();
+		have_sta = sta_info_get(sdata, cbss->bssid);
+		rcu_read_unlock();
+	}
+
+	if (!have_sta) {
+		new_sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL);
+		if (!new_sta)
+			return -ENOMEM;
+	}
+
+	mutex_lock(&local->mtx);
+	ieee80211_recalc_idle(sdata->local);
+	mutex_unlock(&local->mtx);
+
+	if (new_sta) {
 		u32 rates = 0, basic_rates = 0;
 		bool have_higher_than_11mbit;
 		int min_rate = INT_MAX, min_rate_index = -1;
+		struct ieee80211_supported_band *sband;
+
+		sband = local->hw.wiphy->bands[cbss->channel->band];
+
+		err = ieee80211_prep_channel(sdata, cbss);
+		if (err) {
+			sta_info_free(local, new_sta);
+			return err;
+		}
 
 		ieee80211_get_rates(sband, bss->supp_rates,
 				    bss->supp_rates_len,
@@ -3122,7 +3174,7 @@ static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
 			basic_rates = BIT(min_rate_index);
 		}
 
-		sta->sta.supp_rates[cbss->channel->band] = rates;
+		new_sta->sta.supp_rates[cbss->channel->band] = rates;
 		sdata->vif.bss_conf.basic_rates = basic_rates;
 
 		/* cf. IEEE 802.11 9.2.12 */
@@ -3145,10 +3197,10 @@ static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
 			BSS_CHANGED_BEACON_INT);
 
 		if (assoc)
-			sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
+			sta_info_pre_move_state(new_sta, IEEE80211_STA_AUTH);
 
-		err = sta_info_insert(sta);
-		sta = NULL;
+		err = sta_info_insert(new_sta);
+		new_sta = NULL;
 		if (err) {
 			sdata_info(sdata,
 				   "failed to insert STA entry for the AP (error %d)\n",
@@ -3300,9 +3352,13 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
 	}
 
 	/* prepare assoc data */
-
-	ifmgd->flags &= ~IEEE80211_STA_DISABLE_11N;
-	ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED;
+	
+	/*
+	 * keep only the 40 MHz disable bit set as it might have
+	 * been set during authentication already, all other bits
+	 * should be reset for a new connection
+	 */
+	ifmgd->flags &= IEEE80211_STA_DISABLE_40MHZ;
 
 	ifmgd->beacon_crc_valid = false;
 
@@ -3318,21 +3374,34 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
 		    req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_TKIP ||
 		    req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP104) {
 			ifmgd->flags |= IEEE80211_STA_DISABLE_11N;
+			ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
 			netdev_info(sdata->dev,
-				    "disabling HT due to WEP/TKIP use\n");
+				    "disabling HT/VHT due to WEP/TKIP use\n");
 		}
 	}
 
-	if (req->flags & ASSOC_REQ_DISABLE_HT)
+	if (req->flags & ASSOC_REQ_DISABLE_HT) {
 		ifmgd->flags |= IEEE80211_STA_DISABLE_11N;
+		ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
+	}
 
 	/* Also disable HT if we don't support it or the AP doesn't use WMM */
 	sband = local->hw.wiphy->bands[req->bss->channel->band];
 	if (!sband->ht_cap.ht_supported ||
 	    local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used) {
 		ifmgd->flags |= IEEE80211_STA_DISABLE_11N;
-		netdev_info(sdata->dev,
-			    "disabling HT as WMM/QoS is not supported\n");
+		if (!bss->wmm_used)
+			netdev_info(sdata->dev,
+				    "disabling HT as WMM/QoS is not supported by the AP\n");
+	}
+
+	/* disable VHT if we don't support it or the AP doesn't use WMM */
+	if (!sband->vht_cap.vht_supported ||
+	    local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used) {
+		ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
+		if (!bss->wmm_used)
+			netdev_info(sdata->dev,
+				    "disabling VHT as WMM/QoS is not supported by the AP\n");
 	}
 
 	memcpy(&ifmgd->ht_capa, &req->ht_capa, sizeof(ifmgd->ht_capa));
@@ -3467,14 +3536,17 @@ int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
 		   req->bssid, req->reason_code);
 
 	if (ifmgd->associated &&
-	    ether_addr_equal(ifmgd->associated->bssid, req->bssid))
+	    ether_addr_equal(ifmgd->associated->bssid, req->bssid)) {
 		ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
 				       req->reason_code, true, frame_buf);
-	else
+	} else {
+		drv_mgd_prepare_tx(sdata->local, sdata);
 		ieee80211_send_deauth_disassoc(sdata, req->bssid,
 					       IEEE80211_STYPE_DEAUTH,
 					       req->reason_code, true,
 					       frame_buf);
+	}
+
 	mutex_unlock(&ifmgd->mtx);
 
 	__cfg80211_send_deauth(sdata->dev, frame_buf, DEAUTH_DISASSOC_LEN);
diff --git a/net/mac80211/offchannel.c b/net/mac80211/offchannel.c
index 635c3250c668..507121dad082 100644
--- a/net/mac80211/offchannel.c
+++ b/net/mac80211/offchannel.c
@@ -116,6 +116,9 @@ void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local,
 		if (!ieee80211_sdata_running(sdata))
 			continue;
 
+		if (sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE)
+			continue;
+
 		if (sdata->vif.type != NL80211_IFTYPE_MONITOR)
 			set_bit(SDATA_STATE_OFFCHANNEL, &sdata->state);
 
@@ -144,6 +147,9 @@ void ieee80211_offchannel_return(struct ieee80211_local *local,
 
 	mutex_lock(&local->iflist_mtx);
 	list_for_each_entry(sdata, &local->interfaces, list) {
+		if (sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE)
+			continue;
+
 		if (sdata->vif.type != NL80211_IFTYPE_MONITOR)
 			clear_bit(SDATA_STATE_OFFCHANNEL, &sdata->state);
 
diff --git a/net/mac80211/rate.h b/net/mac80211/rate.h
index 6e4fd32c6617..10de668eb9f6 100644
--- a/net/mac80211/rate.h
+++ b/net/mac80211/rate.h
@@ -56,7 +56,7 @@ static inline void rate_control_rate_init(struct sta_info *sta)
 	if (!ref)
 		return;
 
-	sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+	sband = local->hw.wiphy->bands[local->oper_channel->band];
 
 	ref->ops->rate_init(ref->priv, sband, ista, priv_sta);
 	set_sta_flag(sta, WLAN_STA_RATE_CONTROL);
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 0cb4edee6af5..b382605c5733 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -60,7 +60,9 @@ static inline int should_drop_frame(struct sk_buff *skb,
 	struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
 
-	if (status->flag & (RX_FLAG_FAILED_FCS_CRC | RX_FLAG_FAILED_PLCP_CRC))
+	if (status->flag & (RX_FLAG_FAILED_FCS_CRC |
+			    RX_FLAG_FAILED_PLCP_CRC |
+			    RX_FLAG_AMPDU_IS_ZEROLEN))
 		return 1;
 	if (unlikely(skb->len < 16 + present_fcs_len))
 		return 1;
@@ -91,6 +93,13 @@ ieee80211_rx_radiotap_len(struct ieee80211_local *local,
 	if (status->flag & RX_FLAG_HT) /* HT info */
 		len += 3;
 
+	if (status->flag & RX_FLAG_AMPDU_DETAILS) {
+		/* padding */
+		while (len & 3)
+			len++;
+		len += 8;
+	}
+
 	return len;
 }
 
@@ -215,6 +224,37 @@ ieee80211_add_rx_radiotap_header(struct ieee80211_local *local,
 		pos++;
 		*pos++ = status->rate_idx;
 	}
+
+	if (status->flag & RX_FLAG_AMPDU_DETAILS) {
+		u16 flags = 0;
+
+		/* ensure 4 byte alignment */
+		while ((pos - (u8 *)rthdr) & 3)
+			pos++;
+		rthdr->it_present |=
+			cpu_to_le32(1 << IEEE80211_RADIOTAP_AMPDU_STATUS);
+		put_unaligned_le32(status->ampdu_reference, pos);
+		pos += 4;
+		if (status->flag & RX_FLAG_AMPDU_REPORT_ZEROLEN)
+			flags |= IEEE80211_RADIOTAP_AMPDU_REPORT_ZEROLEN;
+		if (status->flag & RX_FLAG_AMPDU_IS_ZEROLEN)
+			flags |= IEEE80211_RADIOTAP_AMPDU_IS_ZEROLEN;
+		if (status->flag & RX_FLAG_AMPDU_LAST_KNOWN)
+			flags |= IEEE80211_RADIOTAP_AMPDU_LAST_KNOWN;
+		if (status->flag & RX_FLAG_AMPDU_IS_LAST)
+			flags |= IEEE80211_RADIOTAP_AMPDU_IS_LAST;
+		if (status->flag & RX_FLAG_AMPDU_DELIM_CRC_ERROR)
+			flags |= IEEE80211_RADIOTAP_AMPDU_DELIM_CRC_ERR;
+		if (status->flag & RX_FLAG_AMPDU_DELIM_CRC_KNOWN)
+			flags |= IEEE80211_RADIOTAP_AMPDU_DELIM_CRC_KNOWN;
+		put_unaligned_le16(flags, pos);
+		pos += 2;
+		if (status->flag & RX_FLAG_AMPDU_DELIM_CRC_KNOWN)
+			*pos++ = status->ampdu_delimiter_crc;
+		else
+			*pos++ = 0;
+		*pos++ = 0;
+	}
 }
 
 /*
@@ -2268,7 +2308,7 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx)
 
 		goto queue;
 	case WLAN_CATEGORY_SPECTRUM_MGMT:
-		if (local->hw.conf.channel->band != IEEE80211_BAND_5GHZ)
+		if (status->band != IEEE80211_BAND_5GHZ)
 			break;
 
 		if (sdata->vif.type != NL80211_IFTYPE_STATION)
@@ -2772,8 +2812,7 @@ static int prepare_for_handlers(struct ieee80211_rx_data *rx,
 		if (!bssid) {
 			if (!ether_addr_equal(sdata->vif.addr, hdr->addr1))
 				return 0;
-		} else if (!ieee80211_bssid_match(bssid,
-					sdata->vif.addr)) {
+		} else if (!ieee80211_bssid_match(bssid, sdata->vif.addr)) {
 			/*
 			 * Accept public action frames even when the
 			 * BSSID doesn't match, this is used for P2P
@@ -2793,9 +2832,18 @@ static int prepare_for_handlers(struct ieee80211_rx_data *rx,
 		if (!ether_addr_equal(sdata->u.wds.remote_addr, hdr->addr2))
 			return 0;
 		break;
+	case NL80211_IFTYPE_P2P_DEVICE:
+		if (!ieee80211_is_public_action(hdr, skb->len) &&
+		    !ieee80211_is_probe_req(hdr->frame_control) &&
+		    !ieee80211_is_probe_resp(hdr->frame_control) &&
+		    !ieee80211_is_beacon(hdr->frame_control))
+			return 0;
+		if (!ether_addr_equal(sdata->vif.addr, hdr->addr1))
+			status->rx_flags &= ~IEEE80211_RX_RA_MATCH;
+		break;
 	default:
 		/* should never get here */
-		WARN_ON(1);
+		WARN_ON_ONCE(1);
 		break;
 	}
 
diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c
index 839dd9737989..740e414d44f4 100644
--- a/net/mac80211/scan.c
+++ b/net/mac80211/scan.c
@@ -416,7 +416,8 @@ static void ieee80211_scan_state_send_probe(struct ieee80211_local *local,
 			local->scan_req->ssids[i].ssid_len,
 			local->scan_req->ie, local->scan_req->ie_len,
 			local->scan_req->rates[band], false,
-			local->scan_req->no_cck);
+			local->scan_req->no_cck,
+			local->hw.conf.channel);
 
 	/*
 	 * After sending probe requests, wait for probe responses
@@ -479,11 +480,10 @@ static int __ieee80211_start_scan(struct ieee80211_sub_if_data *sdata,
 	if (local->ops->hw_scan) {
 		__set_bit(SCAN_HW_SCANNING, &local->scanning);
 	} else if ((req->n_channels == 1) &&
-		   (req->channels[0]->center_freq ==
-		    local->hw.conf.channel->center_freq)) {
-
-		/* If we are scanning only on the current channel, then
-		 * we do not need to stop normal activities
+		   (req->channels[0] == local->oper_channel)) {
+		/*
+		 * If we are scanning only on the operating channel
+		 * then we do not need to stop normal activities
 		 */
 		unsigned long next_delay;
 
diff --git a/net/mac80211/status.c b/net/mac80211/status.c
index 8cd72914cdaf..b0801b7d572d 100644
--- a/net/mac80211/status.c
+++ b/net/mac80211/status.c
@@ -519,19 +519,27 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
 		u64 cookie = (unsigned long)skb;
 		acked = info->flags & IEEE80211_TX_STAT_ACK;
 
-		/*
-		 * TODO: When we have non-netdev frame TX,
-		 * we cannot use skb->dev->ieee80211_ptr
-		 */
-
 		if (ieee80211_is_nullfunc(hdr->frame_control) ||
-		    ieee80211_is_qos_nullfunc(hdr->frame_control))
+		    ieee80211_is_qos_nullfunc(hdr->frame_control)) {
 			cfg80211_probe_status(skb->dev, hdr->addr1,
 					      cookie, acked, GFP_ATOMIC);
-		else
+		} else if (skb->dev) {
 			cfg80211_mgmt_tx_status(
 				skb->dev->ieee80211_ptr, cookie, skb->data,
 				skb->len, acked, GFP_ATOMIC);
+		} else {
+			struct ieee80211_sub_if_data *p2p_sdata;
+
+			rcu_read_lock();
+
+			p2p_sdata = rcu_dereference(local->p2p_sdata);
+			if (p2p_sdata) {
+				cfg80211_mgmt_tx_status(
+					&p2p_sdata->wdev, cookie, skb->data,
+					skb->len, acked, GFP_ATOMIC);
+			}
+			rcu_read_unlock();
+		}
 	}
 
 	if (unlikely(info->ack_frame_id)) {
diff --git a/net/mac80211/trace.h b/net/mac80211/trace.h
index c6d33b55b2df..18d9c8a52e9e 100644
--- a/net/mac80211/trace.h
+++ b/net/mac80211/trace.h
@@ -24,7 +24,7 @@
 			__string(vif_name, sdata->dev ? sdata->dev->name : "<nodev>")
 #define VIF_ASSIGN	__entry->vif_type = sdata->vif.type; __entry->sdata = sdata;	\
 			__entry->p2p = sdata->vif.p2p;					\
-			__assign_str(vif_name, sdata->dev ? sdata->dev->name : "<nodev>")
+			__assign_str(vif_name, sdata->dev ? sdata->dev->name : sdata->name)
 #define VIF_PR_FMT	" vif:%s(%d%s)"
 #define VIF_PR_ARG	__get_str(vif_name), __entry->vif_type, __entry->p2p ? "/p2p" : ""
 
@@ -274,9 +274,12 @@ TRACE_EVENT(drv_config,
 		__entry->dynamic_ps_timeout = local->hw.conf.dynamic_ps_timeout;
 		__entry->max_sleep_period = local->hw.conf.max_sleep_period;
 		__entry->listen_interval = local->hw.conf.listen_interval;
-		__entry->long_frame_max_tx_count = local->hw.conf.long_frame_max_tx_count;
-		__entry->short_frame_max_tx_count = local->hw.conf.short_frame_max_tx_count;
-		__entry->center_freq = local->hw.conf.channel->center_freq;
+		__entry->long_frame_max_tx_count =
+			local->hw.conf.long_frame_max_tx_count;
+		__entry->short_frame_max_tx_count =
+			local->hw.conf.short_frame_max_tx_count;
+		__entry->center_freq = local->hw.conf.channel ?
+					local->hw.conf.channel->center_freq : 0;
 		__entry->channel_type = local->hw.conf.channel_type;
 		__entry->smps = local->hw.conf.smps_mode;
 	),
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index acf712ffb5e6..29eb4e678235 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -55,7 +55,7 @@ static __le16 ieee80211_duration(struct ieee80211_tx_data *tx,
 	if (WARN_ON_ONCE(info->control.rates[0].idx < 0))
 		return 0;
 
-	sband = local->hw.wiphy->bands[tx->channel->band];
+	sband = local->hw.wiphy->bands[info->band];
 	txrate = &sband->bitrates[info->control.rates[0].idx];
 
 	erp = txrate->flags & IEEE80211_RATE_ERP_G;
@@ -615,7 +615,7 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx)
 
 	memset(&txrc, 0, sizeof(txrc));
 
-	sband = tx->local->hw.wiphy->bands[tx->channel->band];
+	sband = tx->local->hw.wiphy->bands[info->band];
 
 	len = min_t(u32, tx->skb->len + FCS_LEN,
 			 tx->local->hw.wiphy->frag_threshold);
@@ -626,13 +626,13 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx)
 	txrc.bss_conf = &tx->sdata->vif.bss_conf;
 	txrc.skb = tx->skb;
 	txrc.reported_rate.idx = -1;
-	txrc.rate_idx_mask = tx->sdata->rc_rateidx_mask[tx->channel->band];
+	txrc.rate_idx_mask = tx->sdata->rc_rateidx_mask[info->band];
 	if (txrc.rate_idx_mask == (1 << sband->n_bitrates) - 1)
 		txrc.max_rate_idx = -1;
 	else
 		txrc.max_rate_idx = fls(txrc.rate_idx_mask) - 1;
 	memcpy(txrc.rate_idx_mcs_mask,
-	       tx->sdata->rc_rateidx_mcs_mask[tx->channel->band],
+	       tx->sdata->rc_rateidx_mcs_mask[info->band],
 	       sizeof(txrc.rate_idx_mcs_mask));
 	txrc.bss = (tx->sdata->vif.type == NL80211_IFTYPE_AP ||
 		    tx->sdata->vif.type == NL80211_IFTYPE_MESH_POINT ||
@@ -667,7 +667,7 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx)
 		 "scanning and associated. Target station: "
 		 "%pM on %d GHz band\n",
 		 tx->sdata->name, hdr->addr1,
-		 tx->channel->band ? 5 : 2))
+		 info->band ? 5 : 2))
 		return TX_DROP;
 
 	/*
@@ -1131,7 +1131,6 @@ ieee80211_tx_prepare(struct ieee80211_sub_if_data *sdata,
 	tx->skb = skb;
 	tx->local = local;
 	tx->sdata = sdata;
-	tx->channel = local->hw.conf.channel;
 	__skb_queue_head_init(&tx->skbs);
 
 	/*
@@ -1204,6 +1203,7 @@ static bool ieee80211_tx_frags(struct ieee80211_local *local,
 			       struct sk_buff_head *skbs,
 			       bool txpending)
 {
+	struct ieee80211_tx_control control;
 	struct sk_buff *skb, *tmp;
 	unsigned long flags;
 
@@ -1240,10 +1240,10 @@ static bool ieee80211_tx_frags(struct ieee80211_local *local,
 		spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
 
 		info->control.vif = vif;
-		info->control.sta = sta;
+		control.sta = sta;
 
 		__skb_unlink(skb, skbs);
-		drv_tx(local, skb);
+		drv_tx(local, &control, skb);
 	}
 
 	return true;
@@ -1399,8 +1399,7 @@ static bool ieee80211_tx(struct ieee80211_sub_if_data *sdata,
 		goto out;
 	}
 
-	tx.channel = local->hw.conf.channel;
-	info->band = tx.channel->band;
+	info->band = local->hw.conf.channel->band;
 
 	/* set up hw_queue value early */
 	if (!(info->flags & IEEE80211_TX_CTL_TX_OFFCHAN) ||
@@ -1720,7 +1719,7 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 	struct ieee80211_local *local = sdata->local;
 	struct ieee80211_tx_info *info;
-	int ret = NETDEV_TX_BUSY, head_need;
+	int head_need;
 	u16 ethertype, hdrlen,  meshhdrlen = 0;
 	__le16 fc;
 	struct ieee80211_hdr hdr;
@@ -1736,10 +1735,8 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
 	u32 info_flags = 0;
 	u16 info_id = 0;
 
-	if (unlikely(skb->len < ETH_HLEN)) {
-		ret = NETDEV_TX_OK;
+	if (unlikely(skb->len < ETH_HLEN))
 		goto fail;
-	}
 
 	/* convert Ethernet header to proper 802.11 header (based on
 	 * operation mode) */
@@ -1787,7 +1784,6 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
 		if (!sdata->u.mesh.mshcfg.dot11MeshTTL) {
 			/* Do not send frames with mesh_ttl == 0 */
 			sdata->u.mesh.mshstats.dropped_frames_ttl++;
-			ret = NETDEV_TX_OK;
 			goto fail;
 		}
 		rcu_read_lock();
@@ -1811,37 +1807,31 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
 			meshhdrlen = ieee80211_new_mesh_header(&mesh_hdr,
 					sdata, NULL, NULL);
 		} else {
-			int is_mesh_mcast = 1;
-			const u8 *mesh_da;
+			/* DS -> MBSS (802.11-2012 13.11.3.3).
+			 * For unicast with unknown forwarding information,
+			 * destination might be in the MBSS or if that fails
+			 * forwarded to another mesh gate. In either case
+			 * resolution will be handled in ieee80211_xmit(), so
+			 * leave the original DA. This also works for mcast */
+			const u8 *mesh_da = skb->data;
+
+			if (mppath)
+				mesh_da = mppath->mpp;
+			else if (mpath)
+				mesh_da = mpath->dst;
+			rcu_read_unlock();
 
-			if (is_multicast_ether_addr(skb->data))
-				/* DA TA mSA AE:SA */
-				mesh_da = skb->data;
-			else {
-				static const u8 bcast[ETH_ALEN] =
-					{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
-				if (mppath) {
-					/* RA TA mDA mSA AE:DA SA */
-					mesh_da = mppath->mpp;
-					is_mesh_mcast = 0;
-				} else if (mpath) {
-					mesh_da = mpath->dst;
-					is_mesh_mcast = 0;
-				} else {
-					/* DA TA mSA AE:SA */
-					mesh_da = bcast;
-				}
-			}
 			hdrlen = ieee80211_fill_mesh_addresses(&hdr, &fc,
 					mesh_da, sdata->vif.addr);
-			rcu_read_unlock();
-			if (is_mesh_mcast)
+			if (is_multicast_ether_addr(mesh_da))
+				/* DA TA mSA AE:SA */
 				meshhdrlen =
 					ieee80211_new_mesh_header(&mesh_hdr,
 							sdata,
 							skb->data + ETH_ALEN,
 							NULL);
 			else
+				/* RA TA mDA mSA AE:DA SA */
 				meshhdrlen =
 					ieee80211_new_mesh_header(&mesh_hdr,
 							sdata,
@@ -1880,10 +1870,8 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
 
 		if (tdls_direct) {
 			/* link during setup - throw out frames to peer */
-			if (!tdls_auth) {
-				ret = NETDEV_TX_OK;
+			if (!tdls_auth)
 				goto fail;
-			}
 
 			/* DA SA BSSID */
 			memcpy(hdr.addr1, skb->data, ETH_ALEN);
@@ -1917,7 +1905,6 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
 		hdrlen = 24;
 		break;
 	default:
-		ret = NETDEV_TX_OK;
 		goto fail;
 	}
 
@@ -1962,7 +1949,6 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
 
 		I802_DEBUG_INC(local->tx_handlers_drop_unauth_port);
 
-		ret = NETDEV_TX_OK;
 		goto fail;
 	}
 
@@ -2017,10 +2003,8 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
 		skb = skb_clone(skb, GFP_ATOMIC);
 		kfree_skb(tmp_skb);
 
-		if (!skb) {
-			ret = NETDEV_TX_OK;
+		if (!skb)
 			goto fail;
-		}
 	}
 
 	hdr.frame_control = fc;
@@ -2123,10 +2107,8 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
 	return NETDEV_TX_OK;
 
  fail:
-	if (ret == NETDEV_TX_OK)
-		dev_kfree_skb(skb);
-
-	return ret;
+	dev_kfree_skb(skb);
+	return NETDEV_TX_OK;
 }
 
 
@@ -2301,12 +2283,9 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw,
 	struct ieee80211_sub_if_data *sdata = NULL;
 	struct ieee80211_if_ap *ap = NULL;
 	struct beacon_data *beacon;
-	struct ieee80211_supported_band *sband;
-	enum ieee80211_band band = local->hw.conf.channel->band;
+	enum ieee80211_band band = local->oper_channel->band;
 	struct ieee80211_tx_rate_control txrc;
 
-	sband = local->hw.wiphy->bands[band];
-
 	rcu_read_lock();
 
 	sdata = vif_to_sdata(vif);
@@ -2416,7 +2395,7 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw,
 		memset(mgmt, 0, hdr_len);
 		mgmt->frame_control =
 		    cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON);
-		memset(mgmt->da, 0xff, ETH_ALEN);
+		eth_broadcast_addr(mgmt->da);
 		memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
 		memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
 		mgmt->u.beacon.beacon_int =
@@ -2428,9 +2407,9 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw,
 		*pos++ = WLAN_EID_SSID;
 		*pos++ = 0x0;
 
-		if (ieee80211_add_srates_ie(sdata, skb, true) ||
+		if (ieee80211_add_srates_ie(sdata, skb, true, band) ||
 		    mesh_add_ds_params_ie(skb, sdata) ||
-		    ieee80211_add_ext_srates_ie(sdata, skb, true) ||
+		    ieee80211_add_ext_srates_ie(sdata, skb, true, band) ||
 		    mesh_add_rsn_ie(skb, sdata) ||
 		    mesh_add_ht_cap_ie(skb, sdata) ||
 		    mesh_add_ht_oper_ie(skb, sdata) ||
@@ -2453,12 +2432,12 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw,
 
 	memset(&txrc, 0, sizeof(txrc));
 	txrc.hw = hw;
-	txrc.sband = sband;
+	txrc.sband = local->hw.wiphy->bands[band];
 	txrc.bss_conf = &sdata->vif.bss_conf;
 	txrc.skb = skb;
 	txrc.reported_rate.idx = -1;
 	txrc.rate_idx_mask = sdata->rc_rateidx_mask[band];
-	if (txrc.rate_idx_mask == (1 << sband->n_bitrates) - 1)
+	if (txrc.rate_idx_mask == (1 << txrc.sband->n_bitrates) - 1)
 		txrc.max_rate_idx = -1;
 	else
 		txrc.max_rate_idx = fls(txrc.rate_idx_mask) - 1;
@@ -2482,7 +2461,8 @@ struct sk_buff *ieee80211_proberesp_get(struct ieee80211_hw *hw,
 					struct ieee80211_vif *vif)
 {
 	struct ieee80211_if_ap *ap = NULL;
-	struct sk_buff *presp = NULL, *skb = NULL;
+	struct sk_buff *skb = NULL;
+	struct probe_resp *presp = NULL;
 	struct ieee80211_hdr *hdr;
 	struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
 
@@ -2496,10 +2476,12 @@ struct sk_buff *ieee80211_proberesp_get(struct ieee80211_hw *hw,
 	if (!presp)
 		goto out;
 
-	skb = skb_copy(presp, GFP_ATOMIC);
+	skb = dev_alloc_skb(presp->len);
 	if (!skb)
 		goto out;
 
+	memcpy(skb_put(skb, presp->len), presp->data, presp->len);
+
 	hdr = (struct ieee80211_hdr *) skb->data;
 	memset(hdr->addr1, 0, sizeof(hdr->addr1));
 
@@ -2610,9 +2592,9 @@ struct sk_buff *ieee80211_probereq_get(struct ieee80211_hw *hw,
 	memset(hdr, 0, sizeof(*hdr));
 	hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
 					 IEEE80211_STYPE_PROBE_REQ);
-	memset(hdr->addr1, 0xff, ETH_ALEN);
+	eth_broadcast_addr(hdr->addr1);
 	memcpy(hdr->addr2, vif->addr, ETH_ALEN);
-	memset(hdr->addr3, 0xff, ETH_ALEN);
+	eth_broadcast_addr(hdr->addr3);
 
 	pos = skb_put(skb, ie_ssid_len);
 	*pos++ = WLAN_EID_SSID;
@@ -2709,8 +2691,7 @@ ieee80211_get_buffered_bc(struct ieee80211_hw *hw,
 	info = IEEE80211_SKB_CB(skb);
 
 	tx.flags |= IEEE80211_TX_PS_BUFFERED;
-	tx.channel = local->hw.conf.channel;
-	info->band = tx.channel->band;
+	info->band = local->oper_channel->band;
 
 	if (invoke_tx_handlers(&tx))
 		skb = NULL;
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 39b82fee4904..471fb0516c99 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -276,6 +276,9 @@ void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue)
 	list_for_each_entry_rcu(sdata, &local->interfaces, list) {
 		int ac;
 
+		if (!sdata->dev)
+			continue;
+
 		if (test_bit(SDATA_STATE_OFFCHANNEL, &sdata->state))
 			continue;
 
@@ -364,6 +367,9 @@ static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue,
 	list_for_each_entry_rcu(sdata, &local->interfaces, list) {
 		int ac;
 
+		if (!sdata->dev)
+			continue;
+
 		for (ac = 0; ac < n_acs; ac++) {
 			if (sdata->vif.hw_queue[ac] == queue ||
 			    sdata->vif.cab_queue == queue)
@@ -768,8 +774,11 @@ u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
 				elem_parse_failed = true;
 			break;
 		case WLAN_EID_CHANNEL_SWITCH:
-			elems->ch_switch_elem = pos;
-			elems->ch_switch_elem_len = elen;
+			if (elen != sizeof(struct ieee80211_channel_sw_ie)) {
+				elem_parse_failed = true;
+				break;
+			}
+			elems->ch_switch_ie = (void *)pos;
 			break;
 		case WLAN_EID_QUIET:
 			if (!elems->quiet_elem) {
@@ -832,7 +841,7 @@ void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
 
 	memset(&qparam, 0, sizeof(qparam));
 
-	use_11b = (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ) &&
+	use_11b = (local->oper_channel->band == IEEE80211_BAND_2GHZ) &&
 		 !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE);
 
 	/*
@@ -899,7 +908,8 @@ void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
 		drv_conf_tx(local, sdata, ac, &qparam);
 	}
 
-	if (sdata->vif.type != NL80211_IFTYPE_MONITOR) {
+	if (sdata->vif.type != NL80211_IFTYPE_MONITOR &&
+	    sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) {
 		sdata->vif.bss_conf.qos = enable_qos;
 		if (bss_notify)
 			ieee80211_bss_info_change_notify(sdata,
@@ -919,7 +929,7 @@ void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
 		if ((supp_rates[i] & 0x7f) * 5 > 110)
 			have_higher_than_11mbit = 1;
 
-	if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ &&
+	if (local->oper_channel->band == IEEE80211_BAND_2GHZ &&
 	    have_higher_than_11mbit)
 		sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
 	else
@@ -1100,6 +1110,7 @@ int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
 
 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
 					  u8 *dst, u32 ratemask,
+					  struct ieee80211_channel *chan,
 					  const u8 *ssid, size_t ssid_len,
 					  const u8 *ie, size_t ie_len,
 					  bool directed)
@@ -1109,7 +1120,7 @@ struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
 	struct ieee80211_mgmt *mgmt;
 	size_t buf_len;
 	u8 *buf;
-	u8 chan;
+	u8 chan_no;
 
 	/* FIXME: come up with a proper value */
 	buf = kmalloc(200 + ie_len, GFP_KERNEL);
@@ -1122,14 +1133,12 @@ struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
 	 * badly-behaved APs don't respond when this parameter is included.
 	 */
 	if (directed)
-		chan = 0;
+		chan_no = 0;
 	else
-		chan = ieee80211_frequency_to_channel(
-			local->hw.conf.channel->center_freq);
+		chan_no = ieee80211_frequency_to_channel(chan->center_freq);
 
-	buf_len = ieee80211_build_preq_ies(local, buf, ie, ie_len,
-					   local->hw.conf.channel->band,
-					   ratemask, chan);
+	buf_len = ieee80211_build_preq_ies(local, buf, ie, ie_len, chan->band,
+					   ratemask, chan_no);
 
 	skb = ieee80211_probereq_get(&local->hw, &sdata->vif,
 				     ssid, ssid_len,
@@ -1154,11 +1163,13 @@ struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
 			      const u8 *ssid, size_t ssid_len,
 			      const u8 *ie, size_t ie_len,
-			      u32 ratemask, bool directed, bool no_cck)
+			      u32 ratemask, bool directed, bool no_cck,
+			      struct ieee80211_channel *channel)
 {
 	struct sk_buff *skb;
 
-	skb = ieee80211_build_probe_req(sdata, dst, ratemask, ssid, ssid_len,
+	skb = ieee80211_build_probe_req(sdata, dst, ratemask, channel,
+					ssid, ssid_len,
 					ie, ie_len, directed);
 	if (skb) {
 		if (no_cck)
@@ -1359,7 +1370,8 @@ int ieee80211_reconfig(struct ieee80211_local *local)
 		switch (sdata->vif.type) {
 		case NL80211_IFTYPE_STATION:
 			changed |= BSS_CHANGED_ASSOC |
-				   BSS_CHANGED_ARP_FILTER;
+				   BSS_CHANGED_ARP_FILTER |
+				   BSS_CHANGED_PS;
 			mutex_lock(&sdata->u.mgd.mtx);
 			ieee80211_bss_info_change_notify(sdata, changed);
 			mutex_unlock(&sdata->u.mgd.mtx);
@@ -1385,6 +1397,9 @@ int ieee80211_reconfig(struct ieee80211_local *local)
 		case NL80211_IFTYPE_MONITOR:
 			/* ignore virtual */
 			break;
+		case NL80211_IFTYPE_P2P_DEVICE:
+			changed = BSS_CHANGED_IDLE;
+			break;
 		case NL80211_IFTYPE_UNSPECIFIED:
 		case NUM_NL80211_IFTYPES:
 		case NL80211_IFTYPE_P2P_CLIENT:
@@ -1571,6 +1586,8 @@ void ieee80211_recalc_smps(struct ieee80211_local *local)
 	list_for_each_entry(sdata, &local->interfaces, list) {
 		if (!ieee80211_sdata_running(sdata))
 			continue;
+		if (sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE)
+			continue;
 		if (sdata->vif.type != NL80211_IFTYPE_STATION)
 			goto set;
 
@@ -1809,7 +1826,8 @@ ieee80211_ht_oper_to_channel_type(struct ieee80211_ht_operation *ht_oper)
 }
 
 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
-			    struct sk_buff *skb, bool need_basic)
+			    struct sk_buff *skb, bool need_basic,
+			    enum ieee80211_band band)
 {
 	struct ieee80211_local *local = sdata->local;
 	struct ieee80211_supported_band *sband;
@@ -1817,7 +1835,7 @@ int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
 	u8 i, rates, *pos;
 	u32 basic_rates = sdata->vif.bss_conf.basic_rates;
 
-	sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+	sband = local->hw.wiphy->bands[band];
 	rates = sband->n_bitrates;
 	if (rates > 8)
 		rates = 8;
@@ -1840,7 +1858,8 @@ int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
 }
 
 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
-				struct sk_buff *skb, bool need_basic)
+				struct sk_buff *skb, bool need_basic,
+				enum ieee80211_band band)
 {
 	struct ieee80211_local *local = sdata->local;
 	struct ieee80211_supported_band *sband;
@@ -1848,7 +1867,7 @@ int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
 	u8 i, exrates, *pos;
 	u32 basic_rates = sdata->vif.bss_conf.basic_rates;
 
-	sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+	sband = local->hw.wiphy->bands[band];
 	exrates = sband->n_bitrates;
 	if (exrates > 8)
 		exrates -= 8;
diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c
index 3c601378d27e..767cc12da0fe 100644
--- a/net/netfilter/ipvs/ip_vs_ctl.c
+++ b/net/netfilter/ipvs/ip_vs_ctl.c
@@ -1171,8 +1171,10 @@ ip_vs_add_service(struct net *net, struct ip_vs_service_user_kern *u,
 		goto out_err;
 	}
 	svc->stats.cpustats = alloc_percpu(struct ip_vs_cpu_stats);
-	if (!svc->stats.cpustats)
+	if (!svc->stats.cpustats) {
+		ret = -ENOMEM;
 		goto out_err;
+	}
 
 	/* I'm the first user of the service */
 	atomic_set(&svc->usecnt, 0);
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index c9bb994ae9ba..dcb27910ab3c 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -255,12 +255,15 @@ static void death_by_event(unsigned long ul_conntrack)
 {
 	struct nf_conn *ct = (void *)ul_conntrack;
 	struct net *net = nf_ct_net(ct);
+	struct nf_conntrack_ecache *ecache = nf_ct_ecache_find(ct);
+
+	BUG_ON(ecache == NULL);
 
 	if (nf_conntrack_event(IPCT_DESTROY, ct) < 0) {
 		/* bad luck, let's retry again */
-		ct->timeout.expires = jiffies +
+		ecache->timeout.expires = jiffies +
 			(random32() % net->ct.sysctl_events_retry_timeout);
-		add_timer(&ct->timeout);
+		add_timer(&ecache->timeout);
 		return;
 	}
 	/* we've got the event delivered, now it's dying */
@@ -274,6 +277,9 @@ static void death_by_event(unsigned long ul_conntrack)
 void nf_ct_insert_dying_list(struct nf_conn *ct)
 {
 	struct net *net = nf_ct_net(ct);
+	struct nf_conntrack_ecache *ecache = nf_ct_ecache_find(ct);
+
+	BUG_ON(ecache == NULL);
 
 	/* add this conntrack to the dying list */
 	spin_lock_bh(&nf_conntrack_lock);
@@ -281,10 +287,10 @@ void nf_ct_insert_dying_list(struct nf_conn *ct)
 			     &net->ct.dying);
 	spin_unlock_bh(&nf_conntrack_lock);
 	/* set a new timer to retry event delivery */
-	setup_timer(&ct->timeout, death_by_event, (unsigned long)ct);
-	ct->timeout.expires = jiffies +
+	setup_timer(&ecache->timeout, death_by_event, (unsigned long)ct);
+	ecache->timeout.expires = jiffies +
 		(random32() % net->ct.sysctl_events_retry_timeout);
-	add_timer(&ct->timeout);
+	add_timer(&ecache->timeout);
 }
 EXPORT_SYMBOL_GPL(nf_ct_insert_dying_list);
 
diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c
index 966f5133a384..a205bd6ce294 100644
--- a/net/netfilter/nf_conntrack_netlink.c
+++ b/net/netfilter/nf_conntrack_netlink.c
@@ -2813,7 +2813,8 @@ static int __init ctnetlink_init(void)
 		goto err_unreg_subsys;
 	}
 
-	if (register_pernet_subsys(&ctnetlink_net_ops)) {
+	ret = register_pernet_subsys(&ctnetlink_net_ops);
+	if (ret < 0) {
 		pr_err("ctnetlink_init: cannot register pernet operations\n");
 		goto err_unreg_exp_subsys;
 	}
diff --git a/net/netfilter/nf_nat_sip.c b/net/netfilter/nf_nat_sip.c
index f4db3a7bd285..16303c752213 100644
--- a/net/netfilter/nf_nat_sip.c
+++ b/net/netfilter/nf_nat_sip.c
@@ -542,7 +542,10 @@ static unsigned int nf_nat_sdp_media(struct sk_buff *skb, unsigned int protoff,
 		ret = nf_ct_expect_related(rtcp_exp);
 		if (ret == 0)
 			break;
-		else if (ret != -EBUSY) {
+		else if (ret == -EBUSY) {
+			nf_ct_unexpect_related(rtp_exp);
+			continue;
+		} else if (ret < 0) {
 			nf_ct_unexpect_related(rtp_exp);
 			port = 0;
 			break;
diff --git a/net/netfilter/nfnetlink_log.c b/net/netfilter/nfnetlink_log.c
index 169ab59ed9d4..be194b144297 100644
--- a/net/netfilter/nfnetlink_log.c
+++ b/net/netfilter/nfnetlink_log.c
@@ -55,6 +55,7 @@ struct nfulnl_instance {
 	unsigned int qlen;		/* number of nlmsgs in skb */
 	struct sk_buff *skb;		/* pre-allocatd skb */
 	struct timer_list timer;
+	struct user_namespace *peer_user_ns;	/* User namespace of the peer process */
 	int peer_pid;			/* PID of the peer process */
 
 	/* configurable parameters */
@@ -132,7 +133,7 @@ instance_put(struct nfulnl_instance *inst)
 static void nfulnl_timer(unsigned long data);
 
 static struct nfulnl_instance *
-instance_create(u_int16_t group_num, int pid)
+instance_create(u_int16_t group_num, int pid, struct user_namespace *user_ns)
 {
 	struct nfulnl_instance *inst;
 	int err;
@@ -162,6 +163,7 @@ instance_create(u_int16_t group_num, int pid)
 
 	setup_timer(&inst->timer, nfulnl_timer, (unsigned long)inst);
 
+	inst->peer_user_ns = user_ns;
 	inst->peer_pid = pid;
 	inst->group_num = group_num;
 
@@ -480,7 +482,7 @@ __build_packet_message(struct nfulnl_instance *inst,
 	}
 
 	if (indev && skb_mac_header_was_set(skb)) {
-		if (nla_put_be32(inst->skb, NFULA_HWTYPE, htons(skb->dev->type)) ||
+		if (nla_put_be16(inst->skb, NFULA_HWTYPE, htons(skb->dev->type)) ||
 		    nla_put_be16(inst->skb, NFULA_HWLEN,
 				 htons(skb->dev->hard_header_len)) ||
 		    nla_put(inst->skb, NFULA_HWHEADER, skb->dev->hard_header_len,
@@ -503,8 +505,11 @@ __build_packet_message(struct nfulnl_instance *inst,
 		read_lock_bh(&skb->sk->sk_callback_lock);
 		if (skb->sk->sk_socket && skb->sk->sk_socket->file) {
 			struct file *file = skb->sk->sk_socket->file;
-			__be32 uid = htonl(file->f_cred->fsuid);
-			__be32 gid = htonl(file->f_cred->fsgid);
+			__be32 uid = htonl(from_kuid_munged(inst->peer_user_ns,
+							    file->f_cred->fsuid));
+			__be32 gid = htonl(from_kgid_munged(inst->peer_user_ns,
+							    file->f_cred->fsgid));
+			/* need to unlock here since NLA_PUT may goto */
 			read_unlock_bh(&skb->sk->sk_callback_lock);
 			if (nla_put_be32(inst->skb, NFULA_UID, uid) ||
 			    nla_put_be32(inst->skb, NFULA_GID, gid))
@@ -783,7 +788,8 @@ nfulnl_recv_config(struct sock *ctnl, struct sk_buff *skb,
 			}
 
 			inst = instance_create(group_num,
-					       NETLINK_CB(skb).pid);
+					       NETLINK_CB(skb).pid,
+					       sk_user_ns(NETLINK_CB(skb).ssk));
 			if (IS_ERR(inst)) {
 				ret = PTR_ERR(inst);
 				goto out;
@@ -996,8 +1002,10 @@ static int __init nfnetlink_log_init(void)
 
 #ifdef CONFIG_PROC_FS
 	if (!proc_create("nfnetlink_log", 0440,
-			 proc_net_netfilter, &nful_file_ops))
+			 proc_net_netfilter, &nful_file_ops)) {
+		status = -ENOMEM;
 		goto cleanup_logger;
+	}
 #endif
 	return status;
 
diff --git a/net/netfilter/xt_LOG.c b/net/netfilter/xt_LOG.c
index ff5f75fddb15..02a2bf49dcbd 100644
--- a/net/netfilter/xt_LOG.c
+++ b/net/netfilter/xt_LOG.c
@@ -363,10 +363,12 @@ static void dump_ipv4_packet(struct sbuff *m,
 	/* Max length: 15 "UID=4294967295 " */
 	if ((logflags & XT_LOG_UID) && !iphoff && skb->sk) {
 		read_lock_bh(&skb->sk->sk_callback_lock);
-		if (skb->sk->sk_socket && skb->sk->sk_socket->file)
+		if (skb->sk->sk_socket && skb->sk->sk_socket->file) {
+			const struct cred *cred = skb->sk->sk_socket->file->f_cred;
 			sb_add(m, "UID=%u GID=%u ",
-				skb->sk->sk_socket->file->f_cred->fsuid,
-				skb->sk->sk_socket->file->f_cred->fsgid);
+				from_kuid_munged(&init_user_ns, cred->fsuid),
+				from_kgid_munged(&init_user_ns, cred->fsgid));
+		}
 		read_unlock_bh(&skb->sk->sk_callback_lock);
 	}
 
@@ -719,10 +721,12 @@ static void dump_ipv6_packet(struct sbuff *m,
 	/* Max length: 15 "UID=4294967295 " */
 	if ((logflags & XT_LOG_UID) && recurse && skb->sk) {
 		read_lock_bh(&skb->sk->sk_callback_lock);
-		if (skb->sk->sk_socket && skb->sk->sk_socket->file)
+		if (skb->sk->sk_socket && skb->sk->sk_socket->file) {
+			const struct cred *cred = skb->sk->sk_socket->file->f_cred;
 			sb_add(m, "UID=%u GID=%u ",
-				skb->sk->sk_socket->file->f_cred->fsuid,
-				skb->sk->sk_socket->file->f_cred->fsgid);
+				from_kuid_munged(&init_user_ns, cred->fsuid),
+				from_kgid_munged(&init_user_ns, cred->fsgid));
+		}
 		read_unlock_bh(&skb->sk->sk_callback_lock);
 	}
 
diff --git a/net/netfilter/xt_owner.c b/net/netfilter/xt_owner.c
index 772d7389b337..ca2e577ed8ac 100644
--- a/net/netfilter/xt_owner.c
+++ b/net/netfilter/xt_owner.c
@@ -17,6 +17,17 @@
 #include <linux/netfilter/x_tables.h>
 #include <linux/netfilter/xt_owner.h>
 
+static int owner_check(const struct xt_mtchk_param *par)
+{
+	struct xt_owner_match_info *info = par->matchinfo;
+
+	/* For now only allow adding matches from the initial user namespace */
+	if ((info->match & (XT_OWNER_UID|XT_OWNER_GID)) &&
+	    (current_user_ns() != &init_user_ns))
+		return -EINVAL;
+	return 0;
+}
+
 static bool
 owner_mt(const struct sk_buff *skb, struct xt_action_param *par)
 {
@@ -37,17 +48,23 @@ owner_mt(const struct sk_buff *skb, struct xt_action_param *par)
 		return ((info->match ^ info->invert) &
 		       (XT_OWNER_UID | XT_OWNER_GID)) == 0;
 
-	if (info->match & XT_OWNER_UID)
-		if ((filp->f_cred->fsuid >= info->uid_min &&
-		    filp->f_cred->fsuid <= info->uid_max) ^
+	if (info->match & XT_OWNER_UID) {
+		kuid_t uid_min = make_kuid(&init_user_ns, info->uid_min);
+		kuid_t uid_max = make_kuid(&init_user_ns, info->uid_max);
+		if ((uid_gte(filp->f_cred->fsuid, uid_min) &&
+		     uid_lte(filp->f_cred->fsuid, uid_max)) ^
 		    !(info->invert & XT_OWNER_UID))
 			return false;
+	}
 
-	if (info->match & XT_OWNER_GID)
-		if ((filp->f_cred->fsgid >= info->gid_min &&
-		    filp->f_cred->fsgid <= info->gid_max) ^
+	if (info->match & XT_OWNER_GID) {
+		kgid_t gid_min = make_kgid(&init_user_ns, info->gid_min);
+		kgid_t gid_max = make_kgid(&init_user_ns, info->gid_max);
+		if ((gid_gte(filp->f_cred->fsgid, gid_min) &&
+		     gid_lte(filp->f_cred->fsgid, gid_max)) ^
 		    !(info->invert & XT_OWNER_GID))
 			return false;
+	}
 
 	return true;
 }
@@ -56,6 +73,7 @@ static struct xt_match owner_mt_reg __read_mostly = {
 	.name       = "owner",
 	.revision   = 1,
 	.family     = NFPROTO_UNSPEC,
+	.checkentry = owner_check,
 	.match      = owner_mt,
 	.matchsize  = sizeof(struct xt_owner_match_info),
 	.hooks      = (1 << NF_INET_LOCAL_OUT) |
diff --git a/net/netfilter/xt_recent.c b/net/netfilter/xt_recent.c
index ae2ad1eec8d0..4635c9b00459 100644
--- a/net/netfilter/xt_recent.c
+++ b/net/netfilter/xt_recent.c
@@ -317,6 +317,8 @@ static int recent_mt_check(const struct xt_mtchk_param *par,
 	struct recent_table *t;
 #ifdef CONFIG_PROC_FS
 	struct proc_dir_entry *pde;
+	kuid_t uid;
+	kgid_t gid;
 #endif
 	unsigned int i;
 	int ret = -EINVAL;
@@ -372,6 +374,13 @@ static int recent_mt_check(const struct xt_mtchk_param *par,
 	for (i = 0; i < ip_list_hash_size; i++)
 		INIT_LIST_HEAD(&t->iphash[i]);
 #ifdef CONFIG_PROC_FS
+	uid = make_kuid(&init_user_ns, ip_list_uid);
+	gid = make_kgid(&init_user_ns, ip_list_gid);
+	if (!uid_valid(uid) || !gid_valid(gid)) {
+		kfree(t);
+		ret = -EINVAL;
+		goto out;
+	}
 	pde = proc_create_data(t->name, ip_list_perms, recent_net->xt_recent,
 		  &recent_mt_fops, t);
 	if (pde == NULL) {
@@ -379,8 +388,8 @@ static int recent_mt_check(const struct xt_mtchk_param *par,
 		ret = -ENOMEM;
 		goto out;
 	}
-	pde->uid = ip_list_uid;
-	pde->gid = ip_list_gid;
+	pde->uid = uid;
+	pde->gid = gid;
 #endif
 	spin_lock_bh(&recent_lock);
 	list_add_tail(&t->list, &recent_net->tables);
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 1445d73533ed..382119917166 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -912,7 +912,8 @@ static void netlink_rcv_wake(struct sock *sk)
 		wake_up_interruptible(&nlk->wait);
 }
 
-static int netlink_unicast_kernel(struct sock *sk, struct sk_buff *skb)
+static int netlink_unicast_kernel(struct sock *sk, struct sk_buff *skb,
+				  struct sock *ssk)
 {
 	int ret;
 	struct netlink_sock *nlk = nlk_sk(sk);
@@ -921,6 +922,7 @@ static int netlink_unicast_kernel(struct sock *sk, struct sk_buff *skb)
 	if (nlk->netlink_rcv != NULL) {
 		ret = skb->len;
 		skb_set_owner_r(skb, sk);
+		NETLINK_CB(skb).ssk = ssk;
 		nlk->netlink_rcv(skb);
 		consume_skb(skb);
 	} else {
@@ -947,7 +949,7 @@ retry:
 		return PTR_ERR(sk);
 	}
 	if (netlink_is_kernel(sk))
-		return netlink_unicast_kernel(sk, skb);
+		return netlink_unicast_kernel(sk, skb, ssk);
 
 	if (sk_filter(sk, skb)) {
 		err = skb->len;
@@ -1373,7 +1375,8 @@ static int netlink_sendmsg(struct kiocb *kiocb, struct socket *sock,
 		dst_pid = addr->nl_pid;
 		dst_group = ffs(addr->nl_groups);
 		err =  -EPERM;
-		if (dst_group && !netlink_capable(sock, NL_NONROOT_SEND))
+		if ((dst_group || dst_pid) &&
+		    !netlink_capable(sock, NL_NONROOT_SEND))
 			goto out;
 	} else {
 		dst_pid = nlk->dst_pid;
@@ -2147,6 +2150,7 @@ static void __init netlink_add_usersock_entry(void)
 	rcu_assign_pointer(nl_table[NETLINK_USERSOCK].listeners, listeners);
 	nl_table[NETLINK_USERSOCK].module = THIS_MODULE;
 	nl_table[NETLINK_USERSOCK].registered = 1;
+	nl_table[NETLINK_USERSOCK].nl_nonroot = NL_NONROOT_SEND;
 
 	netlink_table_ungrab();
 }
diff --git a/net/openvswitch/flow.c b/net/openvswitch/flow.c
index b7f38b161909..c7bf2f26525a 100644
--- a/net/openvswitch/flow.c
+++ b/net/openvswitch/flow.c
@@ -427,19 +427,11 @@ void ovs_flow_deferred_free(struct sw_flow *flow)
 	call_rcu(&flow->rcu, rcu_free_flow_callback);
 }
 
-/* RCU callback used by ovs_flow_deferred_free_acts. */
-static void rcu_free_acts_callback(struct rcu_head *rcu)
-{
-	struct sw_flow_actions *sf_acts = container_of(rcu,
-			struct sw_flow_actions, rcu);
-	kfree(sf_acts);
-}
-
 /* Schedules 'sf_acts' to be freed after the next RCU grace period.
  * The caller must hold rcu_read_lock for this to be sensible. */
 void ovs_flow_deferred_free_acts(struct sw_flow_actions *sf_acts)
 {
-	call_rcu(&sf_acts->rcu, rcu_free_acts_callback);
+	kfree_rcu(sf_acts, rcu);
 }
 
 static int parse_vlan(struct sk_buff *skb, struct sw_flow_key *key)
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index f220c5bdb71f..94060edbbd70 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -1162,7 +1162,7 @@ static void __fanout_unlink(struct sock *sk, struct packet_sock *po)
 	spin_unlock(&f->lock);
 }
 
-bool match_fanout_group(struct packet_type *ptype, struct sock * sk)
+static bool match_fanout_group(struct packet_type *ptype, struct sock * sk)
 {
 	if (ptype->af_packet_priv == (void*)((struct packet_sock *)sk)->fanout)
 		return true;
@@ -3749,7 +3749,7 @@ static int packet_seq_show(struct seq_file *seq, void *v)
 			   po->ifindex,
 			   po->running,
 			   atomic_read(&s->sk_rmem_alloc),
-			   sock_i_uid(s),
+			   from_kuid_munged(seq_user_ns(seq), sock_i_uid(s)),
 			   sock_i_ino(s));
 	}
 
diff --git a/net/phonet/socket.c b/net/phonet/socket.c
index 0acc943f713a..b7e982782255 100644
--- a/net/phonet/socket.c
+++ b/net/phonet/socket.c
@@ -612,7 +612,8 @@ static int pn_sock_seq_show(struct seq_file *seq, void *v)
 			sk->sk_protocol, pn->sobject, pn->dobject,
 			pn->resource, sk->sk_state,
 			sk_wmem_alloc_get(sk), sk_rmem_alloc_get(sk),
-			sock_i_uid(sk), sock_i_ino(sk),
+			from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)),
+			sock_i_ino(sk),
 			atomic_read(&sk->sk_refcnt), sk,
 			atomic_read(&sk->sk_drops), &len);
 	}
@@ -796,7 +797,8 @@ static int pn_res_seq_show(struct seq_file *seq, void *v)
 		struct sock *sk = *psk;
 
 		seq_printf(seq, "%02X %5d %lu%n",
-			   (int) (psk - pnres.sk), sock_i_uid(sk),
+			   (int) (psk - pnres.sk),
+			   from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)),
 			   sock_i_ino(sk), &len);
 	}
 	seq_printf(seq, "%*s\n", 63 - len, "");
diff --git a/net/rfkill/core.c b/net/rfkill/core.c
index 752b72360ebc..c275bad12068 100644
--- a/net/rfkill/core.c
+++ b/net/rfkill/core.c
@@ -150,6 +150,20 @@ static void rfkill_led_trigger_activate(struct led_classdev *led)
 	rfkill_led_trigger_event(rfkill);
 }
 
+const char *rfkill_get_led_trigger_name(struct rfkill *rfkill)
+{
+	return rfkill->led_trigger.name;
+}
+EXPORT_SYMBOL(rfkill_get_led_trigger_name);
+
+void rfkill_set_led_trigger_name(struct rfkill *rfkill, const char *name)
+{
+	BUG_ON(!rfkill);
+
+	rfkill->ledtrigname = name;
+}
+EXPORT_SYMBOL(rfkill_set_led_trigger_name);
+
 static int rfkill_led_trigger_register(struct rfkill *rfkill)
 {
 	rfkill->led_trigger.name = rfkill->ledtrigname
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index 6dd1131f2ec1..dc3ef5aef355 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -319,7 +319,7 @@ replay:
 		}
 	}
 
-	err = tp->ops->change(tp, cl, t->tcm_handle, tca, &fh);
+	err = tp->ops->change(skb, tp, cl, t->tcm_handle, tca, &fh);
 	if (err == 0) {
 		if (tp_created) {
 			spin_lock_bh(root_lock);
diff --git a/net/sched/cls_basic.c b/net/sched/cls_basic.c
index 590960a22a77..344a11b342e5 100644
--- a/net/sched/cls_basic.c
+++ b/net/sched/cls_basic.c
@@ -162,7 +162,8 @@ errout:
 	return err;
 }
 
-static int basic_change(struct tcf_proto *tp, unsigned long base, u32 handle,
+static int basic_change(struct sk_buff *in_skb,
+			struct tcf_proto *tp, unsigned long base, u32 handle,
 			struct nlattr **tca, unsigned long *arg)
 {
 	int err;
diff --git a/net/sched/cls_cgroup.c b/net/sched/cls_cgroup.c
index 7743ea8d1d38..91de66695b4a 100644
--- a/net/sched/cls_cgroup.c
+++ b/net/sched/cls_cgroup.c
@@ -151,7 +151,8 @@ static const struct nla_policy cgroup_policy[TCA_CGROUP_MAX + 1] = {
 	[TCA_CGROUP_EMATCHES]	= { .type = NLA_NESTED },
 };
 
-static int cls_cgroup_change(struct tcf_proto *tp, unsigned long base,
+static int cls_cgroup_change(struct sk_buff *in_skb,
+			     struct tcf_proto *tp, unsigned long base,
 			     u32 handle, struct nlattr **tca,
 			     unsigned long *arg)
 {
diff --git a/net/sched/cls_flow.c b/net/sched/cls_flow.c
index ccd08c8dc6a7..ce82d0cb1b47 100644
--- a/net/sched/cls_flow.c
+++ b/net/sched/cls_flow.c
@@ -193,15 +193,19 @@ static u32 flow_get_rtclassid(const struct sk_buff *skb)
 
 static u32 flow_get_skuid(const struct sk_buff *skb)
 {
-	if (skb->sk && skb->sk->sk_socket && skb->sk->sk_socket->file)
-		return skb->sk->sk_socket->file->f_cred->fsuid;
+	if (skb->sk && skb->sk->sk_socket && skb->sk->sk_socket->file) {
+		kuid_t skuid = skb->sk->sk_socket->file->f_cred->fsuid;
+		return from_kuid(&init_user_ns, skuid);
+	}
 	return 0;
 }
 
 static u32 flow_get_skgid(const struct sk_buff *skb)
 {
-	if (skb->sk && skb->sk->sk_socket && skb->sk->sk_socket->file)
-		return skb->sk->sk_socket->file->f_cred->fsgid;
+	if (skb->sk && skb->sk->sk_socket && skb->sk->sk_socket->file) {
+		kgid_t skgid = skb->sk->sk_socket->file->f_cred->fsgid;
+		return from_kgid(&init_user_ns, skgid);
+	}
 	return 0;
 }
 
@@ -347,7 +351,8 @@ static const struct nla_policy flow_policy[TCA_FLOW_MAX + 1] = {
 	[TCA_FLOW_PERTURB]	= { .type = NLA_U32 },
 };
 
-static int flow_change(struct tcf_proto *tp, unsigned long base,
+static int flow_change(struct sk_buff *in_skb, 
+		       struct tcf_proto *tp, unsigned long base,
 		       u32 handle, struct nlattr **tca,
 		       unsigned long *arg)
 {
@@ -386,6 +391,10 @@ static int flow_change(struct tcf_proto *tp, unsigned long base,
 
 		if (fls(keymask) - 1 > FLOW_KEY_MAX)
 			return -EOPNOTSUPP;
+
+		if ((keymask & (FLOW_KEY_SKUID|FLOW_KEY_SKGID)) &&
+		    sk_user_ns(NETLINK_CB(in_skb).ssk) != &init_user_ns)
+			return -EOPNOTSUPP;
 	}
 
 	err = tcf_exts_validate(tp, tb, tca[TCA_RATE], &e, &flow_ext_map);
diff --git a/net/sched/cls_fw.c b/net/sched/cls_fw.c
index 8384a4797240..4075a0aef2aa 100644
--- a/net/sched/cls_fw.c
+++ b/net/sched/cls_fw.c
@@ -233,7 +233,8 @@ errout:
 	return err;
 }
 
-static int fw_change(struct tcf_proto *tp, unsigned long base,
+static int fw_change(struct sk_buff *in_skb,
+		     struct tcf_proto *tp, unsigned long base,
 		     u32 handle,
 		     struct nlattr **tca,
 		     unsigned long *arg)
diff --git a/net/sched/cls_route.c b/net/sched/cls_route.c
index 44f405cb9aaf..c10d57bf98f2 100644
--- a/net/sched/cls_route.c
+++ b/net/sched/cls_route.c
@@ -427,7 +427,8 @@ errout:
 	return err;
 }
 
-static int route4_change(struct tcf_proto *tp, unsigned long base,
+static int route4_change(struct sk_buff *in_skb,
+		       struct tcf_proto *tp, unsigned long base,
 		       u32 handle,
 		       struct nlattr **tca,
 		       unsigned long *arg)
diff --git a/net/sched/cls_rsvp.h b/net/sched/cls_rsvp.h
index 18ab93ec8d7e..494bbb90924a 100644
--- a/net/sched/cls_rsvp.h
+++ b/net/sched/cls_rsvp.h
@@ -416,7 +416,8 @@ static const struct nla_policy rsvp_policy[TCA_RSVP_MAX + 1] = {
 	[TCA_RSVP_PINFO]	= { .len = sizeof(struct tc_rsvp_pinfo) },
 };
 
-static int rsvp_change(struct tcf_proto *tp, unsigned long base,
+static int rsvp_change(struct sk_buff *in_skb,
+		       struct tcf_proto *tp, unsigned long base,
 		       u32 handle,
 		       struct nlattr **tca,
 		       unsigned long *arg)
diff --git a/net/sched/cls_tcindex.c b/net/sched/cls_tcindex.c
index fe29420d0b0e..a1293b4ab7a1 100644
--- a/net/sched/cls_tcindex.c
+++ b/net/sched/cls_tcindex.c
@@ -332,7 +332,8 @@ errout:
 }
 
 static int
-tcindex_change(struct tcf_proto *tp, unsigned long base, u32 handle,
+tcindex_change(struct sk_buff *in_skb,
+	       struct tcf_proto *tp, unsigned long base, u32 handle,
 	       struct nlattr **tca, unsigned long *arg)
 {
 	struct nlattr *opt = tca[TCA_OPTIONS];
diff --git a/net/sched/cls_u32.c b/net/sched/cls_u32.c
index d45373fb00b9..c7c27bc91b5a 100644
--- a/net/sched/cls_u32.c
+++ b/net/sched/cls_u32.c
@@ -544,7 +544,8 @@ errout:
 	return err;
 }
 
-static int u32_change(struct tcf_proto *tp, unsigned long base, u32 handle,
+static int u32_change(struct sk_buff *in_skb,
+		      struct tcf_proto *tp, unsigned long base, u32 handle,
 		      struct nlattr **tca,
 		      unsigned long *arg)
 {
diff --git a/net/sctp/proc.c b/net/sctp/proc.c
index d9cb2ab149fe..c3bea269faf4 100644
--- a/net/sctp/proc.c
+++ b/net/sctp/proc.c
@@ -220,7 +220,8 @@ static int sctp_eps_seq_show(struct seq_file *seq, void *v)
 		seq_printf(seq, "%8pK %8pK %-3d %-3d %-4d %-5d %5d %5lu ", ep, sk,
 			   sctp_sk(sk)->type, sk->sk_state, hash,
 			   epb->bind_addr.port,
-			   sock_i_uid(sk), sock_i_ino(sk));
+			   from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)),
+			   sock_i_ino(sk));
 
 		sctp_seq_dump_local_addrs(seq, epb);
 		seq_printf(seq, "\n");
@@ -332,7 +333,8 @@ static int sctp_assocs_seq_show(struct seq_file *seq, void *v)
 			   assoc->assoc_id,
 			   assoc->sndbuf_used,
 			   atomic_read(&assoc->rmem_alloc),
-			   sock_i_uid(sk), sock_i_ino(sk),
+			   from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)),
+			   sock_i_ino(sk),
 			   epb->bind_addr.port,
 			   assoc->peer.port);
 		seq_printf(seq, " ");
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index c5ee4ff61364..8a84ab64cafd 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -2060,10 +2060,14 @@ static int unix_shutdown(struct socket *sock, int mode)
 	struct sock *sk = sock->sk;
 	struct sock *other;
 
-	mode = (mode+1)&(RCV_SHUTDOWN|SEND_SHUTDOWN);
-
-	if (!mode)
-		return 0;
+	if (mode < SHUT_RD || mode > SHUT_RDWR)
+		return -EINVAL;
+	/* This maps:
+	 * SHUT_RD   (0) -> RCV_SHUTDOWN  (1)
+	 * SHUT_WR   (1) -> SEND_SHUTDOWN (2)
+	 * SHUT_RDWR (2) -> SHUTDOWN_MASK (3)
+	 */
+	++mode;
 
 	unix_state_lock(sk);
 	sk->sk_shutdown |= mode;
diff --git a/net/wireless/chan.c b/net/wireless/chan.c
index d355f67d0cdd..2f876b9ee344 100644
--- a/net/wireless/chan.c
+++ b/net/wireless/chan.c
@@ -105,7 +105,7 @@ cfg80211_get_chan_state(struct wireless_dev *wdev,
 
 	ASSERT_WDEV_LOCK(wdev);
 
-	if (!netif_running(wdev->netdev))
+	if (wdev->netdev && !netif_running(wdev->netdev))
 		return;
 
 	switch (wdev->iftype) {
@@ -143,6 +143,11 @@ cfg80211_get_chan_state(struct wireless_dev *wdev,
 	case NL80211_IFTYPE_WDS:
 		/* these interface types don't really have a channel */
 		return;
+	case NL80211_IFTYPE_P2P_DEVICE:
+		if (wdev->wiphy->features &
+				NL80211_FEATURE_P2P_DEVICE_NEEDS_CHANNEL)
+			*chanmode = CHAN_MODE_EXCLUSIVE;
+		return;
 	case NL80211_IFTYPE_UNSPECIFIED:
 	case NUM_NL80211_IFTYPES:
 		WARN_ON(1);
diff --git a/net/wireless/core.c b/net/wireless/core.c
index dcd64d5b07aa..443d4d7deea2 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -230,9 +230,24 @@ static int cfg80211_rfkill_set_block(void *data, bool blocked)
 	rtnl_lock();
 	mutex_lock(&rdev->devlist_mtx);
 
-	list_for_each_entry(wdev, &rdev->wdev_list, list)
-		if (wdev->netdev)
+	list_for_each_entry(wdev, &rdev->wdev_list, list) {
+		if (wdev->netdev) {
 			dev_close(wdev->netdev);
+			continue;
+		}
+		/* otherwise, check iftype */
+		switch (wdev->iftype) {
+		case NL80211_IFTYPE_P2P_DEVICE:
+			if (!wdev->p2p_started)
+				break;
+			rdev->ops->stop_p2p_device(&rdev->wiphy, wdev);
+			wdev->p2p_started = false;
+			rdev->opencount--;
+			break;
+		default:
+			break;
+		}
+	}
 
 	mutex_unlock(&rdev->devlist_mtx);
 	rtnl_unlock();
@@ -407,6 +422,11 @@ static int wiphy_verify_combinations(struct wiphy *wiphy)
 			if (WARN_ON(wiphy->software_iftypes & types))
 				return -EINVAL;
 
+			/* Only a single P2P_DEVICE can be allowed */
+			if (WARN_ON(types & BIT(NL80211_IFTYPE_P2P_DEVICE) &&
+				    c->limits[j].max > 1))
+				return -EINVAL;
+
 			cnt += c->limits[j].max;
 			/*
 			 * Don't advertise an unsupported type
@@ -734,6 +754,35 @@ static void wdev_cleanup_work(struct work_struct *work)
 	dev_put(wdev->netdev);
 }
 
+void cfg80211_unregister_wdev(struct wireless_dev *wdev)
+{
+	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
+
+	ASSERT_RTNL();
+
+	if (WARN_ON(wdev->netdev))
+		return;
+
+	mutex_lock(&rdev->devlist_mtx);
+	list_del_rcu(&wdev->list);
+	rdev->devlist_generation++;
+
+	switch (wdev->iftype) {
+	case NL80211_IFTYPE_P2P_DEVICE:
+		if (!wdev->p2p_started)
+			break;
+		rdev->ops->stop_p2p_device(&rdev->wiphy, wdev);
+		wdev->p2p_started = false;
+		rdev->opencount--;
+		break;
+	default:
+		WARN_ON_ONCE(1);
+		break;
+	}
+	mutex_unlock(&rdev->devlist_mtx);
+}
+EXPORT_SYMBOL(cfg80211_unregister_wdev);
+
 static struct device_type wiphy_type = {
 	.name	= "wlan",
 };
diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c
index 1cdb1d5e6b0f..8fd0242ee169 100644
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -736,7 +736,6 @@ int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
 			  const u8 *buf, size_t len, bool no_cck,
 			  bool dont_wait_for_ack, u64 *cookie)
 {
-	struct net_device *dev = wdev->netdev;
 	const struct ieee80211_mgmt *mgmt;
 	u16 stype;
 
@@ -796,7 +795,7 @@ int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
 		case NL80211_IFTYPE_AP:
 		case NL80211_IFTYPE_P2P_GO:
 		case NL80211_IFTYPE_AP_VLAN:
-			if (!ether_addr_equal(mgmt->bssid, dev->dev_addr))
+			if (!ether_addr_equal(mgmt->bssid, wdev_address(wdev)))
 				err = -EINVAL;
 			break;
 		case NL80211_IFTYPE_MESH_POINT:
@@ -809,6 +808,11 @@ int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
 			 * cfg80211 doesn't track the stations
 			 */
 			break;
+		case NL80211_IFTYPE_P2P_DEVICE:
+			/*
+			 * fall through, P2P device only supports
+			 * public action frames
+			 */
 		default:
 			err = -EOPNOTSUPP;
 			break;
@@ -819,7 +823,7 @@ int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
 			return err;
 	}
 
-	if (!ether_addr_equal(mgmt->sa, dev->dev_addr))
+	if (!ether_addr_equal(mgmt->sa, wdev_address(wdev)))
 		return -EINVAL;
 
 	/* Transmit the Action frame as requested by user space */
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 97026f3b215a..787aeaa902fe 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -1100,6 +1100,7 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
 		if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
 			goto nla_put_failure;
 	}
+	CMD(start_p2p_device, START_P2P_DEVICE);
 
 #ifdef CONFIG_NL80211_TESTMODE
 	CMD(testmode_cmd, TESTMODE);
@@ -1748,13 +1749,13 @@ static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
 
 	if (dev &&
 	    (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
-	     nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name) ||
-	     nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dev->dev_addr)))
+	     nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
 		goto nla_put_failure;
 
 	if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
 	    nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
 	    nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
+	    nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
 	    nla_put_u32(msg, NL80211_ATTR_GENERATION,
 			rdev->devlist_generation ^
 			(cfg80211_rdev_list_generation << 2)))
@@ -2021,8 +2022,10 @@ static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
 		return PTR_ERR(wdev);
 	}
 
-	if (type == NL80211_IFTYPE_MESH_POINT &&
-	    info->attrs[NL80211_ATTR_MESH_ID]) {
+	switch (type) {
+	case NL80211_IFTYPE_MESH_POINT:
+		if (!info->attrs[NL80211_ATTR_MESH_ID])
+			break;
 		wdev_lock(wdev);
 		BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
 			     IEEE80211_MAX_MESH_ID_LEN);
@@ -2031,6 +2034,26 @@ static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
 		memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
 		       wdev->mesh_id_up_len);
 		wdev_unlock(wdev);
+		break;
+	case NL80211_IFTYPE_P2P_DEVICE:
+		/*
+		 * P2P Device doesn't have a netdev, so doesn't go
+		 * through the netdev notifier and must be added here
+		 */
+		mutex_init(&wdev->mtx);
+		INIT_LIST_HEAD(&wdev->event_list);
+		spin_lock_init(&wdev->event_lock);
+		INIT_LIST_HEAD(&wdev->mgmt_registrations);
+		spin_lock_init(&wdev->mgmt_registrations_lock);
+
+		mutex_lock(&rdev->devlist_mtx);
+		wdev->identifier = ++rdev->wdev_id;
+		list_add_rcu(&wdev->list, &rdev->wdev_list);
+		rdev->devlist_generation++;
+		mutex_unlock(&rdev->devlist_mtx);
+		break;
+	default:
+		break;
 	}
 
 	if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0,
@@ -6053,6 +6076,7 @@ static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
 	case NL80211_IFTYPE_AP_VLAN:
 	case NL80211_IFTYPE_MESH_POINT:
 	case NL80211_IFTYPE_P2P_GO:
+	case NL80211_IFTYPE_P2P_DEVICE:
 		break;
 	default:
 		return -EOPNOTSUPP;
@@ -6099,6 +6123,7 @@ static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
 	case NL80211_IFTYPE_AP_VLAN:
 	case NL80211_IFTYPE_MESH_POINT:
 	case NL80211_IFTYPE_P2P_GO:
+	case NL80211_IFTYPE_P2P_DEVICE:
 		break;
 	default:
 		return -EOPNOTSUPP;
@@ -6195,6 +6220,7 @@ static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *in
 	case NL80211_IFTYPE_AP:
 	case NL80211_IFTYPE_AP_VLAN:
 	case NL80211_IFTYPE_P2P_GO:
+	case NL80211_IFTYPE_P2P_DEVICE:
 		break;
 	default:
 		return -EOPNOTSUPP;
@@ -6810,6 +6836,68 @@ static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
 	return 0;
 }
 
+static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg80211_registered_device *rdev = info->user_ptr[0];
+	struct wireless_dev *wdev = info->user_ptr[1];
+	int err;
+
+	if (!rdev->ops->start_p2p_device)
+		return -EOPNOTSUPP;
+
+	if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
+		return -EOPNOTSUPP;
+
+	if (wdev->p2p_started)
+		return 0;
+
+	mutex_lock(&rdev->devlist_mtx);
+	err = cfg80211_can_add_interface(rdev, wdev->iftype);
+	mutex_unlock(&rdev->devlist_mtx);
+	if (err)
+		return err;
+
+	err = rdev->ops->start_p2p_device(&rdev->wiphy, wdev);
+	if (err)
+		return err;
+
+	wdev->p2p_started = true;
+	mutex_lock(&rdev->devlist_mtx);
+	rdev->opencount++;
+	mutex_unlock(&rdev->devlist_mtx);
+
+	return 0;
+}
+
+static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg80211_registered_device *rdev = info->user_ptr[0];
+	struct wireless_dev *wdev = info->user_ptr[1];
+
+	if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
+		return -EOPNOTSUPP;
+
+	if (!rdev->ops->stop_p2p_device)
+		return -EOPNOTSUPP;
+
+	if (!wdev->p2p_started)
+		return 0;
+
+	rdev->ops->stop_p2p_device(&rdev->wiphy, wdev);
+	wdev->p2p_started = false;
+
+	mutex_lock(&rdev->devlist_mtx);
+	rdev->opencount--;
+	mutex_unlock(&rdev->devlist_mtx);
+
+	if (WARN_ON(rdev->scan_req && rdev->scan_req->wdev == wdev)) {
+		rdev->scan_req->aborted = true;
+		___cfg80211_scan_done(rdev, true);
+	}
+
+	return 0;
+}
+
 #define NL80211_FLAG_NEED_WIPHY		0x01
 #define NL80211_FLAG_NEED_NETDEV	0x02
 #define NL80211_FLAG_NEED_RTNL		0x04
@@ -6817,7 +6905,7 @@ static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
 #define NL80211_FLAG_NEED_NETDEV_UP	(NL80211_FLAG_NEED_NETDEV |\
 					 NL80211_FLAG_CHECK_NETDEV_UP)
 #define NL80211_FLAG_NEED_WDEV		0x10
-/* If a netdev is associated, it must be UP */
+/* If a netdev is associated, it must be UP, P2P must be started */
 #define NL80211_FLAG_NEED_WDEV_UP	(NL80211_FLAG_NEED_WDEV |\
 					 NL80211_FLAG_CHECK_NETDEV_UP)
 
@@ -6878,6 +6966,13 @@ static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
 			}
 
 			dev_hold(dev);
+		} else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
+			if (!wdev->p2p_started) {
+				mutex_unlock(&cfg80211_mutex);
+				if (rtnl)
+					rtnl_unlock();
+				return -ENETDOWN;
+			}
 		}
 
 		cfg80211_lock_rdev(rdev);
@@ -7439,7 +7534,22 @@ static struct genl_ops nl80211_ops[] = {
 		.internal_flags = NL80211_FLAG_NEED_NETDEV |
 				  NL80211_FLAG_NEED_RTNL,
 	},
-
+	{
+		.cmd = NL80211_CMD_START_P2P_DEVICE,
+		.doit = nl80211_start_p2p_device,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+		.internal_flags = NL80211_FLAG_NEED_WDEV |
+				  NL80211_FLAG_NEED_RTNL,
+	},
+	{
+		.cmd = NL80211_CMD_STOP_P2P_DEVICE,
+		.doit = nl80211_stop_p2p_device,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+		.internal_flags = NL80211_FLAG_NEED_WDEV_UP |
+				  NL80211_FLAG_NEED_RTNL,
+	},
 };
 
 static struct genl_multicast_group nl80211_mlme_mcgrp = {
diff --git a/net/wireless/radiotap.c b/net/wireless/radiotap.c
index c4ad7958af52..7d604c06c3dc 100644
--- a/net/wireless/radiotap.c
+++ b/net/wireless/radiotap.c
@@ -41,6 +41,8 @@ static const struct radiotap_align_size rtap_namespace_sizes[] = {
 	[IEEE80211_RADIOTAP_TX_FLAGS] = { .align = 2, .size = 2, },
 	[IEEE80211_RADIOTAP_RTS_RETRIES] = { .align = 1, .size = 1, },
 	[IEEE80211_RADIOTAP_DATA_RETRIES] = { .align = 1, .size = 1, },
+	[IEEE80211_RADIOTAP_MCS] = { .align = 1, .size = 3, },
+	[IEEE80211_RADIOTAP_AMPDU_STATUS] = { .align = 4, .size = 8, },
 	/*
 	 * add more here as they are defined in radiotap.h
 	 */
diff --git a/net/wireless/util.c b/net/wireless/util.c
index 994e2f0cc7a8..ef35f4ef2aa6 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -684,22 +684,10 @@ EXPORT_SYMBOL(cfg80211_classify8021d);
 
 const u8 *ieee80211_bss_get_ie(struct cfg80211_bss *bss, u8 ie)
 {
-	u8 *end, *pos;
-
-	pos = bss->information_elements;
-	if (pos == NULL)
+	if (bss->information_elements == NULL)
 		return NULL;
-	end = pos + bss->len_information_elements;
-
-	while (pos + 1 < end) {
-		if (pos + 2 + pos[1] > end)
-			break;
-		if (pos[0] == ie)
-			return pos;
-		pos += 2 + pos[1];
-	}
-
-	return NULL;
+	return cfg80211_find_ie(ie, bss->information_elements,
+				 bss->len_information_elements);
 }
 EXPORT_SYMBOL(ieee80211_bss_get_ie);
 
@@ -812,6 +800,10 @@ int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
 	if (otype == NL80211_IFTYPE_AP_VLAN)
 		return -EOPNOTSUPP;
 
+	/* cannot change into P2P device type */
+	if (ntype == NL80211_IFTYPE_P2P_DEVICE)
+		return -EOPNOTSUPP;
+
 	if (!rdev->ops->change_virtual_intf ||
 	    !(rdev->wiphy.interface_modes & (1 << ntype)))
 		return -EOPNOTSUPP;
@@ -889,6 +881,9 @@ int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
 		case NUM_NL80211_IFTYPES:
 			/* not happening */
 			break;
+		case NL80211_IFTYPE_P2P_DEVICE:
+			WARN_ON(1);
+			break;
 		}
 	}
 
@@ -1053,8 +1048,15 @@ int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
 	list_for_each_entry(wdev_iter, &rdev->wdev_list, list) {
 		if (wdev_iter == wdev)
 			continue;
-		if (!netif_running(wdev_iter->netdev))
-			continue;
+		if (wdev_iter->netdev) {
+			if (!netif_running(wdev_iter->netdev))
+				continue;
+		} else if (wdev_iter->iftype == NL80211_IFTYPE_P2P_DEVICE) {
+			if (!wdev_iter->p2p_started)
+				continue;
+		} else {
+			WARN_ON(1);
+		}
 
 		if (rdev->wiphy.software_iftypes & BIT(wdev_iter->iftype))
 			continue;