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

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1958 commits)
  net: pack skb_shared_info more efficiently
  net_sched: red: split red_parms into parms and vars
  net_sched: sfq: extend limits
  cnic: Improve error recovery on bnx2x devices
  cnic: Re-init dev->stats_addr after chip reset
  net_sched: Bug in netem reordering
  bna: fix sparse warnings/errors
  bna: make ethtool_ops and strings const
  xgmac: cleanups
  net: make ethtool_ops const
  vmxnet3" make ethtool ops const
  xen-netback: make ops structs const
  virtio_net: Pass gfp flags when allocating rx buffers.
  ixgbe: FCoE: Add support for ndo_get_fcoe_hbainfo() call
  netdev: FCoE: Add new ndo_get_fcoe_hbainfo() call
  igb: reset PHY after recovering from PHY power down
  igb: add basic runtime PM support
  igb: Add support for byte queue limits.
  e1000: cleanup CE4100 MDIO registers access
  e1000: unmap ce4100_gbe_mdio_base_virt in e1000_remove
  ...

16 files changed, 411 insertions, 345 deletions

diff --git a/net/batman-adv/bat_sysfs.c b/net/batman-adv/bat_sysfs.c
index b8a7414c3571..c25492f7d665 100644
--- a/net/batman-adv/bat_sysfs.c
+++ b/net/batman-adv/bat_sysfs.c
@@ -174,7 +174,7 @@ static int store_uint_attr(const char *buff, size_t count,
 	unsigned long uint_val;
 	int ret;
 
-	ret = strict_strtoul(buff, 10, &uint_val);
+	ret = kstrtoul(buff, 10, &uint_val);
 	if (ret) {
 		bat_info(net_dev,
 			 "%s: Invalid parameter received: %s\n",
@@ -239,7 +239,7 @@ static ssize_t store_vis_mode(struct kobject *kobj, struct attribute *attr,
 	unsigned long val;
 	int ret, vis_mode_tmp = -1;
 
-	ret = strict_strtoul(buff, 10, &val);
+	ret = kstrtoul(buff, 10, &val);
 
 	if (((count == 2) && (!ret) && (val == VIS_TYPE_CLIENT_UPDATE)) ||
 	    (strncmp(buff, "client", 6) == 0) ||
diff --git a/net/batman-adv/bitarray.c b/net/batman-adv/bitarray.c
index 0be9ff346fa0..9bc63b209b3f 100644
--- a/net/batman-adv/bitarray.c
+++ b/net/batman-adv/bitarray.c
@@ -155,7 +155,7 @@ int bit_get_packet(void *priv, unsigned long *seq_bits,
 	/* sequence number is much newer, probably missed a lot of packets */
 
 	if ((seq_num_diff >= TQ_LOCAL_WINDOW_SIZE)
-		|| (seq_num_diff < EXPECTED_SEQNO_RANGE)) {
+		&& (seq_num_diff < EXPECTED_SEQNO_RANGE)) {
 		bat_dbg(DBG_BATMAN, bat_priv,
 			"We missed a lot of packets (%i) !\n",
 			seq_num_diff - 1);
diff --git a/net/batman-adv/gateway_client.c b/net/batman-adv/gateway_client.c
index 619fb73b3b76..24403a7350f7 100644
--- a/net/batman-adv/gateway_client.c
+++ b/net/batman-adv/gateway_client.c
@@ -25,6 +25,7 @@
 #include "gateway_common.h"
 #include "hard-interface.h"
 #include "originator.h"
+#include "translation-table.h"
 #include "routing.h"
 #include <linux/ip.h>
 #include <linux/ipv6.h>
@@ -572,108 +573,142 @@ out:
 	return ret;
 }
 
-int gw_is_target(struct bat_priv *bat_priv, struct sk_buff *skb,
-		 struct orig_node *old_gw)
+bool gw_is_dhcp_target(struct sk_buff *skb, unsigned int *header_len)
 {
 	struct ethhdr *ethhdr;
 	struct iphdr *iphdr;
 	struct ipv6hdr *ipv6hdr;
 	struct udphdr *udphdr;
-	struct gw_node *curr_gw;
-	struct neigh_node *neigh_curr = NULL, *neigh_old = NULL;
-	unsigned int header_len = 0;
-	int ret = 1;
-
-	if (atomic_read(&bat_priv->gw_mode) == GW_MODE_OFF)
-		return 0;
 
 	/* check for ethernet header */
-	if (!pskb_may_pull(skb, header_len + ETH_HLEN))
-		return 0;
+	if (!pskb_may_pull(skb, *header_len + ETH_HLEN))
+		return false;
 	ethhdr = (struct ethhdr *)skb->data;
-	header_len += ETH_HLEN;
+	*header_len += ETH_HLEN;
 
 	/* check for initial vlan header */
 	if (ntohs(ethhdr->h_proto) == ETH_P_8021Q) {
-		if (!pskb_may_pull(skb, header_len + VLAN_HLEN))
-			return 0;
+		if (!pskb_may_pull(skb, *header_len + VLAN_HLEN))
+			return false;
 		ethhdr = (struct ethhdr *)(skb->data + VLAN_HLEN);
-		header_len += VLAN_HLEN;
+		*header_len += VLAN_HLEN;
 	}
 
 	/* check for ip header */
 	switch (ntohs(ethhdr->h_proto)) {
 	case ETH_P_IP:
-		if (!pskb_may_pull(skb, header_len + sizeof(*iphdr)))
-			return 0;
-		iphdr = (struct iphdr *)(skb->data + header_len);
-		header_len += iphdr->ihl * 4;
+		if (!pskb_may_pull(skb, *header_len + sizeof(*iphdr)))
+			return false;
+		iphdr = (struct iphdr *)(skb->data + *header_len);
+		*header_len += iphdr->ihl * 4;
 
 		/* check for udp header */
 		if (iphdr->protocol != IPPROTO_UDP)
-			return 0;
+			return false;
 
 		break;
 	case ETH_P_IPV6:
-		if (!pskb_may_pull(skb, header_len + sizeof(*ipv6hdr)))
-			return 0;
-		ipv6hdr = (struct ipv6hdr *)(skb->data + header_len);
-		header_len += sizeof(*ipv6hdr);
+		if (!pskb_may_pull(skb, *header_len + sizeof(*ipv6hdr)))
+			return false;
+		ipv6hdr = (struct ipv6hdr *)(skb->data + *header_len);
+		*header_len += sizeof(*ipv6hdr);
 
 		/* check for udp header */
 		if (ipv6hdr->nexthdr != IPPROTO_UDP)
-			return 0;
+			return false;
 
 		break;
 	default:
-		return 0;
+		return false;
 	}
 
-	if (!pskb_may_pull(skb, header_len + sizeof(*udphdr)))
-		return 0;
-	udphdr = (struct udphdr *)(skb->data + header_len);
-	header_len += sizeof(*udphdr);
+	if (!pskb_may_pull(skb, *header_len + sizeof(*udphdr)))
+		return false;
+	udphdr = (struct udphdr *)(skb->data + *header_len);
+	*header_len += sizeof(*udphdr);
 
 	/* check for bootp port */
 	if ((ntohs(ethhdr->h_proto) == ETH_P_IP) &&
 	     (ntohs(udphdr->dest) != 67))
-		return 0;
+		return false;
 
 	if ((ntohs(ethhdr->h_proto) == ETH_P_IPV6) &&
 	    (ntohs(udphdr->dest) != 547))
-		return 0;
+		return false;
 
-	if (atomic_read(&bat_priv->gw_mode) == GW_MODE_SERVER)
-		return -1;
+	return true;
+}
 
-	curr_gw = gw_get_selected_gw_node(bat_priv);
-	if (!curr_gw)
-		return 0;
-
-	/* If old_gw != NULL then this packet is unicast.
-	 * So, at this point we have to check the message type: if it is a
-	 * DHCPREQUEST we have to decide whether to drop it or not */
-	if (old_gw && curr_gw->orig_node != old_gw) {
-		if (is_type_dhcprequest(skb, header_len)) {
-			/* If the dhcp packet has been sent to a different gw,
-			 * we have to evaluate whether the old gw is still
-			 * reliable enough */
-			neigh_curr = find_router(bat_priv, curr_gw->orig_node,
-						 NULL);
-			neigh_old = find_router(bat_priv, old_gw, NULL);
-			if (!neigh_curr || !neigh_old)
-				goto free_neigh;
-			if (neigh_curr->tq_avg - neigh_old->tq_avg <
-								GW_THRESHOLD)
-				ret = -1;
-		}
+bool gw_out_of_range(struct bat_priv *bat_priv,
+		     struct sk_buff *skb, struct ethhdr *ethhdr)
+{
+	struct neigh_node *neigh_curr = NULL, *neigh_old = NULL;
+	struct orig_node *orig_dst_node = NULL;
+	struct gw_node *curr_gw = NULL;
+	bool ret, out_of_range = false;
+	unsigned int header_len = 0;
+	uint8_t curr_tq_avg;
+
+	ret = gw_is_dhcp_target(skb, &header_len);
+	if (!ret)
+		goto out;
+
+	orig_dst_node = transtable_search(bat_priv, ethhdr->h_source,
+					  ethhdr->h_dest);
+	if (!orig_dst_node)
+		goto out;
+
+	if (!orig_dst_node->gw_flags)
+		goto out;
+
+	ret = is_type_dhcprequest(skb, header_len);
+	if (!ret)
+		goto out;
+
+	switch (atomic_read(&bat_priv->gw_mode)) {
+	case GW_MODE_SERVER:
+		/* If we are a GW then we are our best GW. We can artificially
+		 * set the tq towards ourself as the maximum value */
+		curr_tq_avg = TQ_MAX_VALUE;
+		break;
+	case GW_MODE_CLIENT:
+		curr_gw = gw_get_selected_gw_node(bat_priv);
+		if (!curr_gw)
+			goto out;
+
+		/* packet is going to our gateway */
+		if (curr_gw->orig_node == orig_dst_node)
+			goto out;
+
+		/* If the dhcp packet has been sent to a different gw,
+		 * we have to evaluate whether the old gw is still
+		 * reliable enough */
+		neigh_curr = find_router(bat_priv, curr_gw->orig_node, NULL);
+		if (!neigh_curr)
+			goto out;
+
+		curr_tq_avg = neigh_curr->tq_avg;
+		break;
+	case GW_MODE_OFF:
+	default:
+		goto out;
 	}
-free_neigh:
+
+	neigh_old = find_router(bat_priv, orig_dst_node, NULL);
+	if (!neigh_old)
+		goto out;
+
+	if (curr_tq_avg - neigh_old->tq_avg > GW_THRESHOLD)
+		out_of_range = true;
+
+out:
+	if (orig_dst_node)
+		orig_node_free_ref(orig_dst_node);
+	if (curr_gw)
+		gw_node_free_ref(curr_gw);
 	if (neigh_old)
 		neigh_node_free_ref(neigh_old);
 	if (neigh_curr)
 		neigh_node_free_ref(neigh_curr);
-	if (curr_gw)
-		gw_node_free_ref(curr_gw);
-	return ret;
+	return out_of_range;
 }
diff --git a/net/batman-adv/gateway_client.h b/net/batman-adv/gateway_client.h
index b9b983c07feb..e1edba08eb1d 100644
--- a/net/batman-adv/gateway_client.h
+++ b/net/batman-adv/gateway_client.h
@@ -31,7 +31,8 @@ void gw_node_update(struct bat_priv *bat_priv,
 void gw_node_delete(struct bat_priv *bat_priv, struct orig_node *orig_node);
 void gw_node_purge(struct bat_priv *bat_priv);
 int gw_client_seq_print_text(struct seq_file *seq, void *offset);
-int gw_is_target(struct bat_priv *bat_priv, struct sk_buff *skb,
-		 struct orig_node *old_gw);
+bool gw_is_dhcp_target(struct sk_buff *skb, unsigned int *header_len);
+bool gw_out_of_range(struct bat_priv *bat_priv,
+		     struct sk_buff *skb, struct ethhdr *ethhdr);
 
 #endif /* _NET_BATMAN_ADV_GATEWAY_CLIENT_H_ */
diff --git a/net/batman-adv/gateway_common.c b/net/batman-adv/gateway_common.c
index 18661af0bc3b..c4ac7b0a2a63 100644
--- a/net/batman-adv/gateway_common.c
+++ b/net/batman-adv/gateway_common.c
@@ -97,7 +97,7 @@ static bool parse_gw_bandwidth(struct net_device *net_dev, char *buff,
 			*tmp_ptr = '\0';
 	}
 
-	ret = strict_strtol(buff, 10, &ldown);
+	ret = kstrtol(buff, 10, &ldown);
 	if (ret) {
 		bat_err(net_dev,
 			"Download speed of gateway mode invalid: %s\n",
@@ -122,7 +122,7 @@ static bool parse_gw_bandwidth(struct net_device *net_dev, char *buff,
 				*tmp_ptr = '\0';
 		}
 
-		ret = strict_strtol(slash_ptr + 1, 10, &lup);
+		ret = kstrtol(slash_ptr + 1, 10, &lup);
 		if (ret) {
 			bat_err(net_dev,
 				"Upload speed of gateway mode invalid: "
diff --git a/net/batman-adv/hash.c b/net/batman-adv/hash.c
index 2a172505f513..d1da29da333b 100644
--- a/net/batman-adv/hash.c
+++ b/net/batman-adv/hash.c
@@ -25,7 +25,7 @@
 /* clears the hash */
 static void hash_init(struct hashtable_t *hash)
 {
-	int i;
+	uint32_t i;
 
 	for (i = 0 ; i < hash->size; i++) {
 		INIT_HLIST_HEAD(&hash->table[i]);
@@ -42,7 +42,7 @@ void hash_destroy(struct hashtable_t *hash)
 }
 
 /* allocates and clears the hash */
-struct hashtable_t *hash_new(int size)
+struct hashtable_t *hash_new(uint32_t size)
 {
 	struct hashtable_t *hash;
 
diff --git a/net/batman-adv/hash.h b/net/batman-adv/hash.h
index d20aa71ba1e8..4768717f07f9 100644
--- a/net/batman-adv/hash.h
+++ b/net/batman-adv/hash.h
@@ -33,17 +33,17 @@ typedef int (*hashdata_compare_cb)(const struct hlist_node *, const void *);
 /* the hashfunction, should return an index
  * based on the key in the data of the first
  * argument and the size the second */
-typedef int (*hashdata_choose_cb)(const void *, int);
+typedef uint32_t (*hashdata_choose_cb)(const void *, uint32_t);
 typedef void (*hashdata_free_cb)(struct hlist_node *, void *);
 
 struct hashtable_t {
 	struct hlist_head *table;   /* the hashtable itself with the buckets */
 	spinlock_t *list_locks;     /* spinlock for each hash list entry */
-	int size;		    /* size of hashtable */
+	uint32_t size;		    /* size of hashtable */
 };
 
 /* allocates and clears the hash */
-struct hashtable_t *hash_new(int size);
+struct hashtable_t *hash_new(uint32_t size);
 
 /* free only the hashtable and the hash itself. */
 void hash_destroy(struct hashtable_t *hash);
@@ -57,7 +57,7 @@ static inline void hash_delete(struct hashtable_t *hash,
 	struct hlist_head *head;
 	struct hlist_node *node, *node_tmp;
 	spinlock_t *list_lock; /* spinlock to protect write access */
-	int i;
+	uint32_t i;
 
 	for (i = 0; i < hash->size; i++) {
 		head = &hash->table[i];
@@ -93,7 +93,8 @@ static inline int hash_add(struct hashtable_t *hash,
 			   hashdata_choose_cb choose,
 			   const void *data, struct hlist_node *data_node)
 {
-	int index, ret = -1;
+	uint32_t index;
+	int ret = -1;
 	struct hlist_head *head;
 	struct hlist_node *node;
 	spinlock_t *list_lock; /* spinlock to protect write access */
@@ -137,7 +138,7 @@ static inline void *hash_remove(struct hashtable_t *hash,
 				hashdata_compare_cb compare,
 				hashdata_choose_cb choose, void *data)
 {
-	size_t index;
+	uint32_t index;
 	struct hlist_node *node;
 	struct hlist_head *head;
 	void *data_save = NULL;
diff --git a/net/batman-adv/icmp_socket.c b/net/batman-adv/icmp_socket.c
index ac3520e057c0..d9c1e7bb7fbf 100644
--- a/net/batman-adv/icmp_socket.c
+++ b/net/batman-adv/icmp_socket.c
@@ -136,10 +136,9 @@ static ssize_t bat_socket_read(struct file *file, char __user *buf,
 
 	spin_unlock_bh(&socket_client->lock);
 
-	error = __copy_to_user(buf, &socket_packet->icmp_packet,
-			       socket_packet->icmp_len);
+	packet_len = min(count, socket_packet->icmp_len);
+	error = copy_to_user(buf, &socket_packet->icmp_packet, packet_len);
 
-	packet_len = socket_packet->icmp_len;
 	kfree(socket_packet);
 
 	if (error)
@@ -187,12 +186,7 @@ static ssize_t bat_socket_write(struct file *file, const char __user *buff,
 	skb_reserve(skb, sizeof(struct ethhdr));
 	icmp_packet = (struct icmp_packet_rr *)skb_put(skb, packet_len);
 
-	if (!access_ok(VERIFY_READ, buff, packet_len)) {
-		len = -EFAULT;
-		goto free_skb;
-	}
-
-	if (__copy_from_user(icmp_packet, buff, packet_len)) {
+	if (copy_from_user(icmp_packet, buff, packet_len)) {
 		len = -EFAULT;
 		goto free_skb;
 	}
@@ -217,7 +211,7 @@ static ssize_t bat_socket_write(struct file *file, const char __user *buff,
 
 	if (icmp_packet->version != COMPAT_VERSION) {
 		icmp_packet->msg_type = PARAMETER_PROBLEM;
-		icmp_packet->ttl = COMPAT_VERSION;
+		icmp_packet->version = COMPAT_VERSION;
 		bat_socket_add_packet(socket_client, icmp_packet, packet_len);
 		goto free_skb;
 	}
diff --git a/net/batman-adv/main.h b/net/batman-adv/main.h
index 964ad4d8ba33..86354e06eb48 100644
--- a/net/batman-adv/main.h
+++ b/net/batman-adv/main.h
@@ -28,7 +28,7 @@
 #define DRIVER_DEVICE "batman-adv"
 
 #ifndef SOURCE_VERSION
-#define SOURCE_VERSION "2011.4.0"
+#define SOURCE_VERSION "2012.0.0"
 #endif
 
 /* B.A.T.M.A.N. parameters */
diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c
index 0e5b77255d99..0bc2045a2f2e 100644
--- a/net/batman-adv/originator.c
+++ b/net/batman-adv/originator.c
@@ -164,7 +164,7 @@ void originator_free(struct bat_priv *bat_priv)
 	struct hlist_head *head;
 	spinlock_t *list_lock; /* spinlock to protect write access */
 	struct orig_node *orig_node;
-	int i;
+	uint32_t i;
 
 	if (!hash)
 		return;
@@ -350,7 +350,7 @@ static void _purge_orig(struct bat_priv *bat_priv)
 	struct hlist_head *head;
 	spinlock_t *list_lock; /* spinlock to protect write access */
 	struct orig_node *orig_node;
-	int i;
+	uint32_t i;
 
 	if (!hash)
 		return;
@@ -413,7 +413,8 @@ int orig_seq_print_text(struct seq_file *seq, void *offset)
 	int batman_count = 0;
 	int last_seen_secs;
 	int last_seen_msecs;
-	int i, ret = 0;
+	uint32_t i;
+	int ret = 0;
 
 	primary_if = primary_if_get_selected(bat_priv);
 
@@ -519,7 +520,8 @@ int orig_hash_add_if(struct hard_iface *hard_iface, int max_if_num)
 	struct hlist_node *node;
 	struct hlist_head *head;
 	struct orig_node *orig_node;
-	int i, ret;
+	uint32_t i;
+	int ret;
 
 	/* resize all orig nodes because orig_node->bcast_own(_sum) depend on
 	 * if_num */
@@ -601,7 +603,8 @@ int orig_hash_del_if(struct hard_iface *hard_iface, int max_if_num)
 	struct hlist_head *head;
 	struct hard_iface *hard_iface_tmp;
 	struct orig_node *orig_node;
-	int i, ret;
+	uint32_t i;
+	int ret;
 
 	/* resize all orig nodes because orig_node->bcast_own(_sum) depend on
 	 * if_num */
diff --git a/net/batman-adv/originator.h b/net/batman-adv/originator.h
index cfc1f60a96a1..67765ffef731 100644
--- a/net/batman-adv/originator.h
+++ b/net/batman-adv/originator.h
@@ -42,7 +42,7 @@ int orig_hash_del_if(struct hard_iface *hard_iface, int max_if_num);
 
 /* hashfunction to choose an entry in a hash table of given size */
 /* hash algorithm from http://en.wikipedia.org/wiki/Hash_table */
-static inline int choose_orig(const void *data, int32_t size)
+static inline uint32_t choose_orig(const void *data, uint32_t size)
 {
 	const unsigned char *key = data;
 	uint32_t hash = 0;
diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c
index f961cc5eade5..773e606f9702 100644
--- a/net/batman-adv/routing.c
+++ b/net/batman-adv/routing.c
@@ -39,7 +39,7 @@ void slide_own_bcast_window(struct hard_iface *hard_iface)
 	struct hlist_head *head;
 	struct orig_node *orig_node;
 	unsigned long *word;
-	int i;
+	uint32_t i;
 	size_t word_index;
 
 	for (i = 0; i < hash->size; i++) {
@@ -578,6 +578,7 @@ int recv_tt_query(struct sk_buff *skb, struct hard_iface *recv_if)
 {
 	struct bat_priv *bat_priv = netdev_priv(recv_if->soft_iface);
 	struct tt_query_packet *tt_query;
+	uint16_t tt_len;
 	struct ethhdr *ethhdr;
 
 	/* drop packet if it has not necessary minimum size */
@@ -616,13 +617,21 @@ int recv_tt_query(struct sk_buff *skb, struct hard_iface *recv_if)
 		}
 		break;
 	case TT_RESPONSE:
-		/* packet needs to be linearized to access the TT changes */
-		if (skb_linearize(skb) < 0)
-			goto out;
+		if (is_my_mac(tt_query->dst)) {
+			/* packet needs to be linearized to access the TT
+			 * changes */
+			if (skb_linearize(skb) < 0)
+				goto out;
+
+			tt_len = tt_query->tt_data * sizeof(struct tt_change);
+
+			/* Ensure we have all the claimed data */
+			if (unlikely(skb_headlen(skb) <
+				     sizeof(struct tt_query_packet) + tt_len))
+				goto out;
 
-		if (is_my_mac(tt_query->dst))
 			handle_tt_response(bat_priv, tt_query);
-		else {
+		} else {
 			bat_dbg(DBG_TT, bat_priv,
 				"Routing TT_RESPONSE to %pM [%c]\n",
 				tt_query->dst,
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index f9cc95728989..987c75a775f9 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -563,10 +563,10 @@ static int interface_tx(struct sk_buff *skb, struct net_device *soft_iface)
 	struct bcast_packet *bcast_packet;
 	struct vlan_ethhdr *vhdr;
 	struct softif_neigh *curr_softif_neigh = NULL;
-	struct orig_node *orig_node = NULL;
+	unsigned int header_len = 0;
 	int data_len = skb->len, ret;
 	short vid = -1;
-	bool do_bcast;
+	bool do_bcast = false;
 
 	if (atomic_read(&bat_priv->mesh_state) != MESH_ACTIVE)
 		goto dropped;
@@ -598,17 +598,28 @@ static int interface_tx(struct sk_buff *skb, struct net_device *soft_iface)
 	/* Register the client MAC in the transtable */
 	tt_local_add(soft_iface, ethhdr->h_source, skb->skb_iif);
 
-	orig_node = transtable_search(bat_priv, ethhdr->h_source,
-				      ethhdr->h_dest);
-	do_bcast = is_multicast_ether_addr(ethhdr->h_dest);
-	if (do_bcast || (orig_node && orig_node->gw_flags)) {
-		ret = gw_is_target(bat_priv, skb, orig_node);
+	if (is_multicast_ether_addr(ethhdr->h_dest)) {
+		do_bcast = true;
 
-		if (ret < 0)
-			goto dropped;
-
-		if (ret)
-			do_bcast = false;
+		switch (atomic_read(&bat_priv->gw_mode)) {
+		case GW_MODE_SERVER:
+			/* gateway servers should not send dhcp
+			 * requests into the mesh */
+			ret = gw_is_dhcp_target(skb, &header_len);
+			if (ret)
+				goto dropped;
+			break;
+		case GW_MODE_CLIENT:
+			/* gateway clients should send dhcp requests
+			 * via unicast to their gateway */
+			ret = gw_is_dhcp_target(skb, &header_len);
+			if (ret)
+				do_bcast = false;
+			break;
+		case GW_MODE_OFF:
+		default:
+			break;
+		}
 	}
 
 	/* ethernet packet should be broadcasted */
@@ -644,6 +655,12 @@ static int interface_tx(struct sk_buff *skb, struct net_device *soft_iface)
 
 	/* unicast packet */
 	} else {
+		if (atomic_read(&bat_priv->gw_mode) != GW_MODE_OFF) {
+			ret = gw_out_of_range(bat_priv, skb, ethhdr);
+			if (ret)
+				goto dropped;
+		}
+
 		ret = unicast_send_skb(skb, bat_priv);
 		if (ret != 0)
 			goto dropped_freed;
@@ -662,8 +679,6 @@ end:
 		softif_neigh_free_ref(curr_softif_neigh);
 	if (primary_if)
 		hardif_free_ref(primary_if);
-	if (orig_node)
-		orig_node_free_ref(orig_node);
 	return NETDEV_TX_OK;
 }
 
@@ -859,7 +874,7 @@ unreg_debugfs:
 unreg_sysfs:
 	sysfs_del_meshif(soft_iface);
 unreg_soft_iface:
-	unregister_netdev(soft_iface);
+	unregister_netdevice(soft_iface);
 	return NULL;
 
 free_soft_iface:
diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index 5f09a578d49d..ab8dea8b0b2e 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -36,18 +36,9 @@ static void _tt_global_del(struct bat_priv *bat_priv,
 static void tt_purge(struct work_struct *work);
 
 /* returns 1 if they are the same mac addr */
-static int compare_ltt(const struct hlist_node *node, const void *data2)
+static int compare_tt(const struct hlist_node *node, const void *data2)
 {
-	const void *data1 = container_of(node, struct tt_local_entry,
-					 hash_entry);
-
-	return (memcmp(data1, data2, ETH_ALEN) == 0 ? 1 : 0);
-}
-
-/* returns 1 if they are the same mac addr */
-static int compare_gtt(const struct hlist_node *node, const void *data2)
-{
-	const void *data1 = container_of(node, struct tt_global_entry,
+	const void *data1 = container_of(node, struct tt_common_entry,
 					 hash_entry);
 
 	return (memcmp(data1, data2, ETH_ALEN) == 0 ? 1 : 0);
@@ -60,14 +51,13 @@ static void tt_start_timer(struct bat_priv *bat_priv)
 			   msecs_to_jiffies(5000));
 }
 
-static struct tt_local_entry *tt_local_hash_find(struct bat_priv *bat_priv,
-						 const void *data)
+static struct tt_common_entry *tt_hash_find(struct hashtable_t *hash,
+					    const void *data)
 {
-	struct hashtable_t *hash = bat_priv->tt_local_hash;
 	struct hlist_head *head;
 	struct hlist_node *node;
-	struct tt_local_entry *tt_local_entry, *tt_local_entry_tmp = NULL;
-	int index;
+	struct tt_common_entry *tt_common_entry, *tt_common_entry_tmp = NULL;
+	uint32_t index;
 
 	if (!hash)
 		return NULL;
@@ -76,51 +66,46 @@ static struct tt_local_entry *tt_local_hash_find(struct bat_priv *bat_priv,
 	head = &hash->table[index];
 
 	rcu_read_lock();
-	hlist_for_each_entry_rcu(tt_local_entry, node, head, hash_entry) {
-		if (!compare_eth(tt_local_entry, data))
+	hlist_for_each_entry_rcu(tt_common_entry, node, head, hash_entry) {
+		if (!compare_eth(tt_common_entry, data))
 			continue;
 
-		if (!atomic_inc_not_zero(&tt_local_entry->refcount))
+		if (!atomic_inc_not_zero(&tt_common_entry->refcount))
 			continue;
 
-		tt_local_entry_tmp = tt_local_entry;
+		tt_common_entry_tmp = tt_common_entry;
 		break;
 	}
 	rcu_read_unlock();
 
-	return tt_local_entry_tmp;
+	return tt_common_entry_tmp;
 }
 
-static struct tt_global_entry *tt_global_hash_find(struct bat_priv *bat_priv,
-						   const void *data)
+static struct tt_local_entry *tt_local_hash_find(struct bat_priv *bat_priv,
+						 const void *data)
 {
-	struct hashtable_t *hash = bat_priv->tt_global_hash;
-	struct hlist_head *head;
-	struct hlist_node *node;
-	struct tt_global_entry *tt_global_entry;
-	struct tt_global_entry *tt_global_entry_tmp = NULL;
-	int index;
-
-	if (!hash)
-		return NULL;
-
-	index = choose_orig(data, hash->size);
-	head = &hash->table[index];
+	struct tt_common_entry *tt_common_entry;
+	struct tt_local_entry *tt_local_entry = NULL;
 
-	rcu_read_lock();
-	hlist_for_each_entry_rcu(tt_global_entry, node, head, hash_entry) {
-		if (!compare_eth(tt_global_entry, data))
-			continue;
+	tt_common_entry = tt_hash_find(bat_priv->tt_local_hash, data);
+	if (tt_common_entry)
+		tt_local_entry = container_of(tt_common_entry,
+					      struct tt_local_entry, common);
+	return tt_local_entry;
+}
 
-		if (!atomic_inc_not_zero(&tt_global_entry->refcount))
-			continue;
+static struct tt_global_entry *tt_global_hash_find(struct bat_priv *bat_priv,
+						   const void *data)
+{
+	struct tt_common_entry *tt_common_entry;
+	struct tt_global_entry *tt_global_entry = NULL;
 
-		tt_global_entry_tmp = tt_global_entry;
-		break;
-	}
-	rcu_read_unlock();
+	tt_common_entry = tt_hash_find(bat_priv->tt_global_hash, data);
+	if (tt_common_entry)
+		tt_global_entry = container_of(tt_common_entry,
+					       struct tt_global_entry, common);
+	return tt_global_entry;
 
-	return tt_global_entry_tmp;
 }
 
 static bool is_out_of_time(unsigned long starting_time, unsigned long timeout)
@@ -133,15 +118,18 @@ static bool is_out_of_time(unsigned long starting_time, unsigned long timeout)
 
 static void tt_local_entry_free_ref(struct tt_local_entry *tt_local_entry)
 {
-	if (atomic_dec_and_test(&tt_local_entry->refcount))
-		kfree_rcu(tt_local_entry, rcu);
+	if (atomic_dec_and_test(&tt_local_entry->common.refcount))
+		kfree_rcu(tt_local_entry, common.rcu);
 }
 
 static void tt_global_entry_free_rcu(struct rcu_head *rcu)
 {
+	struct tt_common_entry *tt_common_entry;
 	struct tt_global_entry *tt_global_entry;
 
-	tt_global_entry = container_of(rcu, struct tt_global_entry, rcu);
+	tt_common_entry = container_of(rcu, struct tt_common_entry, rcu);
+	tt_global_entry = container_of(tt_common_entry, struct tt_global_entry,
+				       common);
 
 	if (tt_global_entry->orig_node)
 		orig_node_free_ref(tt_global_entry->orig_node);
@@ -151,8 +139,9 @@ static void tt_global_entry_free_rcu(struct rcu_head *rcu)
 
 static void tt_global_entry_free_ref(struct tt_global_entry *tt_global_entry)
 {
-	if (atomic_dec_and_test(&tt_global_entry->refcount))
-		call_rcu(&tt_global_entry->rcu, tt_global_entry_free_rcu);
+	if (atomic_dec_and_test(&tt_global_entry->common.refcount))
+		call_rcu(&tt_global_entry->common.rcu,
+			 tt_global_entry_free_rcu);
 }
 
 static void tt_local_event(struct bat_priv *bat_priv, const uint8_t *addr,
@@ -201,6 +190,7 @@ void tt_local_add(struct net_device *soft_iface, const uint8_t *addr,
 	struct bat_priv *bat_priv = netdev_priv(soft_iface);
 	struct tt_local_entry *tt_local_entry = NULL;
 	struct tt_global_entry *tt_global_entry = NULL;
+	int hash_added;
 
 	tt_local_entry = tt_local_hash_find(bat_priv, addr);
 
@@ -217,26 +207,33 @@ void tt_local_add(struct net_device *soft_iface, const uint8_t *addr,
 		"Creating new local tt entry: %pM (ttvn: %d)\n", addr,
 		(uint8_t)atomic_read(&bat_priv->ttvn));
 
-	memcpy(tt_local_entry->addr, addr, ETH_ALEN);
-	tt_local_entry->last_seen = jiffies;
-	tt_local_entry->flags = NO_FLAGS;
+	memcpy(tt_local_entry->common.addr, addr, ETH_ALEN);
+	tt_local_entry->common.flags = NO_FLAGS;
 	if (is_wifi_iface(ifindex))
-		tt_local_entry->flags |= TT_CLIENT_WIFI;
-	atomic_set(&tt_local_entry->refcount, 2);
+		tt_local_entry->common.flags |= TT_CLIENT_WIFI;
+	atomic_set(&tt_local_entry->common.refcount, 2);
+	tt_local_entry->last_seen = jiffies;
 
 	/* the batman interface mac address should never be purged */
 	if (compare_eth(addr, soft_iface->dev_addr))
-		tt_local_entry->flags |= TT_CLIENT_NOPURGE;
+		tt_local_entry->common.flags |= TT_CLIENT_NOPURGE;
+
+	hash_added = hash_add(bat_priv->tt_local_hash, compare_tt, choose_orig,
+			 &tt_local_entry->common,
+			 &tt_local_entry->common.hash_entry);
+
+	if (unlikely(hash_added != 0)) {
+		/* remove the reference for the hash */
+		tt_local_entry_free_ref(tt_local_entry);
+		goto out;
+	}
 
-	tt_local_event(bat_priv, addr, tt_local_entry->flags);
+	tt_local_event(bat_priv, addr, tt_local_entry->common.flags);
 
 	/* The local entry has to be marked as NEW to avoid to send it in
 	 * a full table response going out before the next ttvn increment
 	 * (consistency check) */
-	tt_local_entry->flags |= TT_CLIENT_NEW;
-
-	hash_add(bat_priv->tt_local_hash, compare_ltt, choose_orig,
-		 tt_local_entry, &tt_local_entry->hash_entry);
+	tt_local_entry->common.flags |= TT_CLIENT_NEW;
 
 	/* remove address from global hash if present */
 	tt_global_entry = tt_global_hash_find(bat_priv, addr);
@@ -247,10 +244,9 @@ void tt_local_add(struct net_device *soft_iface, const uint8_t *addr,
 		tt_global_entry->orig_node->tt_poss_change = true;
 		/* The global entry has to be marked as ROAMING and has to be
 		 * kept for consistency purpose */
-		tt_global_entry->flags |= TT_CLIENT_ROAM;
+		tt_global_entry->common.flags |= TT_CLIENT_ROAM;
 		tt_global_entry->roam_at = jiffies;
-
-		send_roam_adv(bat_priv, tt_global_entry->addr,
+		send_roam_adv(bat_priv, tt_global_entry->common.addr,
 			      tt_global_entry->orig_node);
 	}
 out:
@@ -312,13 +308,12 @@ int tt_local_seq_print_text(struct seq_file *seq, void *offset)
 	struct net_device *net_dev = (struct net_device *)seq->private;
 	struct bat_priv *bat_priv = netdev_priv(net_dev);
 	struct hashtable_t *hash = bat_priv->tt_local_hash;
-	struct tt_local_entry *tt_local_entry;
+	struct tt_common_entry *tt_common_entry;
 	struct hard_iface *primary_if;
 	struct hlist_node *node;
 	struct hlist_head *head;
-	size_t buf_size, pos;
-	char *buff;
-	int i, ret = 0;
+	uint32_t i;
+	int ret = 0;
 
 	primary_if = primary_if_get_selected(bat_priv);
 	if (!primary_if) {
@@ -339,51 +334,27 @@ int tt_local_seq_print_text(struct seq_file *seq, void *offset)
 		   "announced via TT (TTVN: %u):\n",
 		   net_dev->name, (uint8_t)atomic_read(&bat_priv->ttvn));
 
-	buf_size = 1;
-	/* Estimate length for: " * xx:xx:xx:xx:xx:xx\n" */
 	for (i = 0; i < hash->size; i++) {
 		head = &hash->table[i];
 
 		rcu_read_lock();
-		__hlist_for_each_rcu(node, head)
-			buf_size += 29;
-		rcu_read_unlock();
-	}
-
-	buff = kmalloc(buf_size, GFP_ATOMIC);
-	if (!buff) {
-		ret = -ENOMEM;
-		goto out;
-	}
-
-	buff[0] = '\0';
-	pos = 0;
-
-	for (i = 0; i < hash->size; i++) {
-		head = &hash->table[i];
-
-		rcu_read_lock();
-		hlist_for_each_entry_rcu(tt_local_entry, node,
+		hlist_for_each_entry_rcu(tt_common_entry, node,
 					 head, hash_entry) {
-			pos += snprintf(buff + pos, 30, " * %pM "
-					"[%c%c%c%c%c]\n",
-					tt_local_entry->addr,
-					(tt_local_entry->flags &
+			seq_printf(seq, " * %pM [%c%c%c%c%c]\n",
+					tt_common_entry->addr,
+					(tt_common_entry->flags &
 					 TT_CLIENT_ROAM ? 'R' : '.'),
-					(tt_local_entry->flags &
+					(tt_common_entry->flags &
 					 TT_CLIENT_NOPURGE ? 'P' : '.'),
-					(tt_local_entry->flags &
+					(tt_common_entry->flags &
 					 TT_CLIENT_NEW ? 'N' : '.'),
-					(tt_local_entry->flags &
+					(tt_common_entry->flags &
 					 TT_CLIENT_PENDING ? 'X' : '.'),
-					(tt_local_entry->flags &
+					(tt_common_entry->flags &
 					 TT_CLIENT_WIFI ? 'W' : '.'));
 		}
 		rcu_read_unlock();
 	}
-
-	seq_printf(seq, "%s", buff);
-	kfree(buff);
 out:
 	if (primary_if)
 		hardif_free_ref(primary_if);
@@ -394,13 +365,13 @@ static void tt_local_set_pending(struct bat_priv *bat_priv,
 				 struct tt_local_entry *tt_local_entry,
 				 uint16_t flags)
 {
-	tt_local_event(bat_priv, tt_local_entry->addr,
-		       tt_local_entry->flags | flags);
+	tt_local_event(bat_priv, tt_local_entry->common.addr,
+		       tt_local_entry->common.flags | flags);
 
 	/* The local client has to be marked as "pending to be removed" but has
 	 * to be kept in the table in order to send it in a full table
 	 * response issued before the net ttvn increment (consistency check) */
-	tt_local_entry->flags |= TT_CLIENT_PENDING;
+	tt_local_entry->common.flags |= TT_CLIENT_PENDING;
 }
 
 void tt_local_remove(struct bat_priv *bat_priv, const uint8_t *addr,
@@ -416,7 +387,7 @@ void tt_local_remove(struct bat_priv *bat_priv, const uint8_t *addr,
 			     (roaming ? TT_CLIENT_ROAM : NO_FLAGS));
 
 	bat_dbg(DBG_TT, bat_priv, "Local tt entry (%pM) pending to be removed: "
-		"%s\n", tt_local_entry->addr, message);
+		"%s\n", tt_local_entry->common.addr, message);
 out:
 	if (tt_local_entry)
 		tt_local_entry_free_ref(tt_local_entry);
@@ -426,23 +397,27 @@ static void tt_local_purge(struct bat_priv *bat_priv)
 {
 	struct hashtable_t *hash = bat_priv->tt_local_hash;
 	struct tt_local_entry *tt_local_entry;
+	struct tt_common_entry *tt_common_entry;
 	struct hlist_node *node, *node_tmp;
 	struct hlist_head *head;
 	spinlock_t *list_lock; /* protects write access to the hash lists */
-	int i;
+	uint32_t i;
 
 	for (i = 0; i < hash->size; i++) {
 		head = &hash->table[i];
 		list_lock = &hash->list_locks[i];
 
 		spin_lock_bh(list_lock);
-		hlist_for_each_entry_safe(tt_local_entry, node, node_tmp,
+		hlist_for_each_entry_safe(tt_common_entry, node, node_tmp,
 					  head, hash_entry) {
-			if (tt_local_entry->flags & TT_CLIENT_NOPURGE)
+			tt_local_entry = container_of(tt_common_entry,
+						      struct tt_local_entry,
+						      common);
+			if (tt_local_entry->common.flags & TT_CLIENT_NOPURGE)
 				continue;
 
 			/* entry already marked for deletion */
-			if (tt_local_entry->flags & TT_CLIENT_PENDING)
+			if (tt_local_entry->common.flags & TT_CLIENT_PENDING)
 				continue;
 
 			if (!is_out_of_time(tt_local_entry->last_seen,
@@ -453,7 +428,7 @@ static void tt_local_purge(struct bat_priv *bat_priv)
 					     TT_CLIENT_DEL);
 			bat_dbg(DBG_TT, bat_priv, "Local tt entry (%pM) "
 				"pending to be removed: timed out\n",
-				tt_local_entry->addr);
+				tt_local_entry->common.addr);
 		}
 		spin_unlock_bh(list_lock);
 	}
@@ -464,10 +439,11 @@ static void tt_local_table_free(struct bat_priv *bat_priv)
 {
 	struct hashtable_t *hash;
 	spinlock_t *list_lock; /* protects write access to the hash lists */
+	struct tt_common_entry *tt_common_entry;
 	struct tt_local_entry *tt_local_entry;
 	struct hlist_node *node, *node_tmp;
 	struct hlist_head *head;
-	int i;
+	uint32_t i;
 
 	if (!bat_priv->tt_local_hash)
 		return;
@@ -479,9 +455,12 @@ static void tt_local_table_free(struct bat_priv *bat_priv)
 		list_lock = &hash->list_locks[i];
 
 		spin_lock_bh(list_lock);
-		hlist_for_each_entry_safe(tt_local_entry, node, node_tmp,
+		hlist_for_each_entry_safe(tt_common_entry, node, node_tmp,
 					  head, hash_entry) {
 			hlist_del_rcu(node);
+			tt_local_entry = container_of(tt_common_entry,
+						      struct tt_local_entry,
+						      common);
 			tt_local_entry_free_ref(tt_local_entry);
 		}
 		spin_unlock_bh(list_lock);
@@ -529,6 +508,7 @@ int tt_global_add(struct bat_priv *bat_priv, struct orig_node *orig_node,
 	struct tt_global_entry *tt_global_entry;
 	struct orig_node *orig_node_tmp;
 	int ret = 0;
+	int hash_added;
 
 	tt_global_entry = tt_global_hash_find(bat_priv, tt_addr);
 
@@ -539,18 +519,24 @@ int tt_global_add(struct bat_priv *bat_priv, struct orig_node *orig_node,
 		if (!tt_global_entry)
 			goto out;
 
-		memcpy(tt_global_entry->addr, tt_addr, ETH_ALEN);
+		memcpy(tt_global_entry->common.addr, tt_addr, ETH_ALEN);
+		tt_global_entry->common.flags = NO_FLAGS;
+		atomic_set(&tt_global_entry->common.refcount, 2);
 		/* Assign the new orig_node */
 		atomic_inc(&orig_node->refcount);
 		tt_global_entry->orig_node = orig_node;
 		tt_global_entry->ttvn = ttvn;
-		tt_global_entry->flags = NO_FLAGS;
 		tt_global_entry->roam_at = 0;
-		atomic_set(&tt_global_entry->refcount, 2);
 
-		hash_add(bat_priv->tt_global_hash, compare_gtt,
-			 choose_orig, tt_global_entry,
-			 &tt_global_entry->hash_entry);
+		hash_added = hash_add(bat_priv->tt_global_hash, compare_tt,
+				 choose_orig, &tt_global_entry->common,
+				 &tt_global_entry->common.hash_entry);
+
+		if (unlikely(hash_added != 0)) {
+			/* remove the reference for the hash */
+			tt_global_entry_free_ref(tt_global_entry);
+			goto out_remove;
+		}
 		atomic_inc(&orig_node->tt_size);
 	} else {
 		if (tt_global_entry->orig_node != orig_node) {
@@ -561,20 +547,21 @@ int tt_global_add(struct bat_priv *bat_priv, struct orig_node *orig_node,
 			orig_node_free_ref(orig_node_tmp);
 			atomic_inc(&orig_node->tt_size);
 		}
+		tt_global_entry->common.flags = NO_FLAGS;
 		tt_global_entry->ttvn = ttvn;
-		tt_global_entry->flags = NO_FLAGS;
 		tt_global_entry->roam_at = 0;
 	}
 
 	if (wifi)
-		tt_global_entry->flags |= TT_CLIENT_WIFI;
+		tt_global_entry->common.flags |= TT_CLIENT_WIFI;
 
 	bat_dbg(DBG_TT, bat_priv,
 		"Creating new global tt entry: %pM (via %pM)\n",
-		tt_global_entry->addr, orig_node->orig);
+		tt_global_entry->common.addr, orig_node->orig);
 
+out_remove:
 	/* remove address from local hash if present */
-	tt_local_remove(bat_priv, tt_global_entry->addr,
+	tt_local_remove(bat_priv, tt_global_entry->common.addr,
 			"global tt received", roaming);
 	ret = 1;
 out:
@@ -588,13 +575,13 @@ int tt_global_seq_print_text(struct seq_file *seq, void *offset)
 	struct net_device *net_dev = (struct net_device *)seq->private;
 	struct bat_priv *bat_priv = netdev_priv(net_dev);
 	struct hashtable_t *hash = bat_priv->tt_global_hash;
+	struct tt_common_entry *tt_common_entry;
 	struct tt_global_entry *tt_global_entry;
 	struct hard_iface *primary_if;
 	struct hlist_node *node;
 	struct hlist_head *head;
-	size_t buf_size, pos;
-	char *buff;
-	int i, ret = 0;
+	uint32_t i;
+	int ret = 0;
 
 	primary_if = primary_if_get_selected(bat_priv);
 	if (!primary_if) {
@@ -617,53 +604,32 @@ int tt_global_seq_print_text(struct seq_file *seq, void *offset)
 	seq_printf(seq, "       %-13s %s       %-15s %s %s\n",
 		   "Client", "(TTVN)", "Originator", "(Curr TTVN)", "Flags");
 
-	buf_size = 1;
-	/* Estimate length for: " * xx:xx:xx:xx:xx:xx (ttvn) via
-	 * xx:xx:xx:xx:xx:xx (cur_ttvn)\n"*/
-	for (i = 0; i < hash->size; i++) {
-		head = &hash->table[i];
-
-		rcu_read_lock();
-		__hlist_for_each_rcu(node, head)
-			buf_size += 67;
-		rcu_read_unlock();
-	}
-
-	buff = kmalloc(buf_size, GFP_ATOMIC);
-	if (!buff) {
-		ret = -ENOMEM;
-		goto out;
-	}
-
-	buff[0] = '\0';
-	pos = 0;
-
 	for (i = 0; i < hash->size; i++) {
 		head = &hash->table[i];
 
 		rcu_read_lock();
-		hlist_for_each_entry_rcu(tt_global_entry, node,
+		hlist_for_each_entry_rcu(tt_common_entry, node,
 					 head, hash_entry) {
-			pos += snprintf(buff + pos, 69,
-					" * %pM  (%3u) via %pM     (%3u)   "
-					"[%c%c%c]\n", tt_global_entry->addr,
+			tt_global_entry = container_of(tt_common_entry,
+						       struct tt_global_entry,
+						       common);
+			seq_printf(seq, " * %pM  (%3u) via %pM     (%3u)   "
+					"[%c%c%c]\n",
+					tt_global_entry->common.addr,
 					tt_global_entry->ttvn,
 					tt_global_entry->orig_node->orig,
 					(uint8_t) atomic_read(
 						&tt_global_entry->orig_node->
 						last_ttvn),
-					(tt_global_entry->flags &
+					(tt_global_entry->common.flags &
 					 TT_CLIENT_ROAM ? 'R' : '.'),
-					(tt_global_entry->flags &
+					(tt_global_entry->common.flags &
 					 TT_CLIENT_PENDING ? 'X' : '.'),
-					(tt_global_entry->flags &
+					(tt_global_entry->common.flags &
 					 TT_CLIENT_WIFI ? 'W' : '.'));
 		}
 		rcu_read_unlock();
 	}
-
-	seq_printf(seq, "%s", buff);
-	kfree(buff);
 out:
 	if (primary_if)
 		hardif_free_ref(primary_if);
@@ -679,13 +645,13 @@ static void _tt_global_del(struct bat_priv *bat_priv,
 
 	bat_dbg(DBG_TT, bat_priv,
 		"Deleting global tt entry %pM (via %pM): %s\n",
-		tt_global_entry->addr, tt_global_entry->orig_node->orig,
+		tt_global_entry->common.addr, tt_global_entry->orig_node->orig,
 		message);
 
 	atomic_dec(&tt_global_entry->orig_node->tt_size);
 
-	hash_remove(bat_priv->tt_global_hash, compare_gtt, choose_orig,
-		    tt_global_entry->addr);
+	hash_remove(bat_priv->tt_global_hash, compare_tt, choose_orig,
+		    tt_global_entry->common.addr);
 out:
 	if (tt_global_entry)
 		tt_global_entry_free_ref(tt_global_entry);
@@ -713,9 +679,9 @@ void tt_global_del(struct bat_priv *bat_priv,
 			 * 2) the client roamed to us => we can directly delete
 			 *    the global entry, since it is useless now. */
 			tt_local_entry = tt_local_hash_find(bat_priv,
-							tt_global_entry->addr);
+							    tt_global_entry->common.addr);
 			if (!tt_local_entry) {
-				tt_global_entry->flags |= TT_CLIENT_ROAM;
+				tt_global_entry->common.flags |= TT_CLIENT_ROAM;
 				tt_global_entry->roam_at = jiffies;
 				goto out;
 			}
@@ -733,7 +699,8 @@ void tt_global_del_orig(struct bat_priv *bat_priv,
 			struct orig_node *orig_node, const char *message)
 {
 	struct tt_global_entry *tt_global_entry;
-	int i;
+	struct tt_common_entry *tt_common_entry;
+	uint32_t i;
 	struct hashtable_t *hash = bat_priv->tt_global_hash;
 	struct hlist_node *node, *safe;
 	struct hlist_head *head;
@@ -747,14 +714,18 @@ void tt_global_del_orig(struct bat_priv *bat_priv,
 		list_lock = &hash->list_locks[i];
 
 		spin_lock_bh(list_lock);
-		hlist_for_each_entry_safe(tt_global_entry, node, safe,
+		hlist_for_each_entry_safe(tt_common_entry, node, safe,
 					 head, hash_entry) {
+			tt_global_entry = container_of(tt_common_entry,
+						       struct tt_global_entry,
+						       common);
 			if (tt_global_entry->orig_node == orig_node) {
 				bat_dbg(DBG_TT, bat_priv,
 					"Deleting global tt entry %pM "
-					"(via %pM): originator time out\n",
-					tt_global_entry->addr,
-					tt_global_entry->orig_node->orig);
+					"(via %pM): %s\n",
+					tt_global_entry->common.addr,
+					tt_global_entry->orig_node->orig,
+					message);
 				hlist_del_rcu(node);
 				tt_global_entry_free_ref(tt_global_entry);
 			}
@@ -767,20 +738,24 @@ void tt_global_del_orig(struct bat_priv *bat_priv,
 static void tt_global_roam_purge(struct bat_priv *bat_priv)
 {
 	struct hashtable_t *hash = bat_priv->tt_global_hash;
+	struct tt_common_entry *tt_common_entry;
 	struct tt_global_entry *tt_global_entry;
 	struct hlist_node *node, *node_tmp;
 	struct hlist_head *head;
 	spinlock_t *list_lock; /* protects write access to the hash lists */
-	int i;
+	uint32_t i;
 
 	for (i = 0; i < hash->size; i++) {
 		head = &hash->table[i];
 		list_lock = &hash->list_locks[i];
 
 		spin_lock_bh(list_lock);
-		hlist_for_each_entry_safe(tt_global_entry, node, node_tmp,
+		hlist_for_each_entry_safe(tt_common_entry, node, node_tmp,
 					  head, hash_entry) {
-			if (!(tt_global_entry->flags & TT_CLIENT_ROAM))
+			tt_global_entry = container_of(tt_common_entry,
+						       struct tt_global_entry,
+						       common);
+			if (!(tt_global_entry->common.flags & TT_CLIENT_ROAM))
 				continue;
 			if (!is_out_of_time(tt_global_entry->roam_at,
 					    TT_CLIENT_ROAM_TIMEOUT * 1000))
@@ -788,7 +763,7 @@ static void tt_global_roam_purge(struct bat_priv *bat_priv)
 
 			bat_dbg(DBG_TT, bat_priv, "Deleting global "
 				"tt entry (%pM): Roaming timeout\n",
-				tt_global_entry->addr);
+				tt_global_entry->common.addr);
 			atomic_dec(&tt_global_entry->orig_node->tt_size);
 			hlist_del_rcu(node);
 			tt_global_entry_free_ref(tt_global_entry);
@@ -802,10 +777,11 @@ static void tt_global_table_free(struct bat_priv *bat_priv)
 {
 	struct hashtable_t *hash;
 	spinlock_t *list_lock; /* protects write access to the hash lists */
+	struct tt_common_entry *tt_common_entry;
 	struct tt_global_entry *tt_global_entry;
 	struct hlist_node *node, *node_tmp;
 	struct hlist_head *head;
-	int i;
+	uint32_t i;
 
 	if (!bat_priv->tt_global_hash)
 		return;
@@ -817,9 +793,12 @@ static void tt_global_table_free(struct bat_priv *bat_priv)
 		list_lock = &hash->list_locks[i];
 
 		spin_lock_bh(list_lock);
-		hlist_for_each_entry_safe(tt_global_entry, node, node_tmp,
+		hlist_for_each_entry_safe(tt_common_entry, node, node_tmp,
 					  head, hash_entry) {
 			hlist_del_rcu(node);
+			tt_global_entry = container_of(tt_common_entry,
+						       struct tt_global_entry,
+						       common);
 			tt_global_entry_free_ref(tt_global_entry);
 		}
 		spin_unlock_bh(list_lock);
@@ -835,8 +814,8 @@ static bool _is_ap_isolated(struct tt_local_entry *tt_local_entry,
 {
 	bool ret = false;
 
-	if (tt_local_entry->flags & TT_CLIENT_WIFI &&
-	    tt_global_entry->flags & TT_CLIENT_WIFI)
+	if (tt_local_entry->common.flags & TT_CLIENT_WIFI &&
+	    tt_global_entry->common.flags & TT_CLIENT_WIFI)
 		ret = true;
 
 	return ret;
@@ -869,7 +848,7 @@ struct orig_node *transtable_search(struct bat_priv *bat_priv,
 
 	/* A global client marked as PENDING has already moved from that
 	 * originator */
-	if (tt_global_entry->flags & TT_CLIENT_PENDING)
+	if (tt_global_entry->common.flags & TT_CLIENT_PENDING)
 		goto out;
 
 	orig_node = tt_global_entry->orig_node;
@@ -888,29 +867,34 @@ uint16_t tt_global_crc(struct bat_priv *bat_priv, struct orig_node *orig_node)
 {
 	uint16_t total = 0, total_one;
 	struct hashtable_t *hash = bat_priv->tt_global_hash;
+	struct tt_common_entry *tt_common_entry;
 	struct tt_global_entry *tt_global_entry;
 	struct hlist_node *node;
 	struct hlist_head *head;
-	int i, j;
+	uint32_t i;
+	int j;
 
 	for (i = 0; i < hash->size; i++) {
 		head = &hash->table[i];
 
 		rcu_read_lock();
-		hlist_for_each_entry_rcu(tt_global_entry, node,
+		hlist_for_each_entry_rcu(tt_common_entry, node,
 					 head, hash_entry) {
+			tt_global_entry = container_of(tt_common_entry,
+						       struct tt_global_entry,
+						       common);
 			if (compare_eth(tt_global_entry->orig_node,
 					orig_node)) {
 				/* Roaming clients are in the global table for
 				 * consistency only. They don't have to be
 				 * taken into account while computing the
 				 * global crc */
-				if (tt_global_entry->flags & TT_CLIENT_ROAM)
+				if (tt_common_entry->flags & TT_CLIENT_ROAM)
 					continue;
 				total_one = 0;
 				for (j = 0; j < ETH_ALEN; j++)
 					total_one = crc16_byte(total_one,
-						tt_global_entry->addr[j]);
+						tt_common_entry->addr[j]);
 				total ^= total_one;
 			}
 		}
@@ -925,25 +909,26 @@ uint16_t tt_local_crc(struct bat_priv *bat_priv)
 {
 	uint16_t total = 0, total_one;
 	struct hashtable_t *hash = bat_priv->tt_local_hash;
-	struct tt_local_entry *tt_local_entry;
+	struct tt_common_entry *tt_common_entry;
 	struct hlist_node *node;
 	struct hlist_head *head;
-	int i, j;
+	uint32_t i;
+	int j;
 
 	for (i = 0; i < hash->size; i++) {
 		head = &hash->table[i];
 
 		rcu_read_lock();
-		hlist_for_each_entry_rcu(tt_local_entry, node,
+		hlist_for_each_entry_rcu(tt_common_entry, node,
 					 head, hash_entry) {
 			/* not yet committed clients have not to be taken into
 			 * account while computing the CRC */
-			if (tt_local_entry->flags & TT_CLIENT_NEW)
+			if (tt_common_entry->flags & TT_CLIENT_NEW)
 				continue;
 			total_one = 0;
 			for (j = 0; j < ETH_ALEN; j++)
 				total_one = crc16_byte(total_one,
-						   tt_local_entry->addr[j]);
+						   tt_common_entry->addr[j]);
 			total ^= total_one;
 		}
 		rcu_read_unlock();
@@ -1032,21 +1017,25 @@ unlock:
 /* data_ptr is useless here, but has to be kept to respect the prototype */
 static int tt_local_valid_entry(const void *entry_ptr, const void *data_ptr)
 {
-	const struct tt_local_entry *tt_local_entry = entry_ptr;
+	const struct tt_common_entry *tt_common_entry = entry_ptr;
 
-	if (tt_local_entry->flags & TT_CLIENT_NEW)
+	if (tt_common_entry->flags & TT_CLIENT_NEW)
 		return 0;
 	return 1;
 }
 
 static int tt_global_valid_entry(const void *entry_ptr, const void *data_ptr)
 {
-	const struct tt_global_entry *tt_global_entry = entry_ptr;
+	const struct tt_common_entry *tt_common_entry = entry_ptr;
+	const struct tt_global_entry *tt_global_entry;
 	const struct orig_node *orig_node = data_ptr;
 
-	if (tt_global_entry->flags & TT_CLIENT_ROAM)
+	if (tt_common_entry->flags & TT_CLIENT_ROAM)
 		return 0;
 
+	tt_global_entry = container_of(tt_common_entry, struct tt_global_entry,
+				       common);
+
 	return (tt_global_entry->orig_node == orig_node);
 }
 
@@ -1057,7 +1046,7 @@ static struct sk_buff *tt_response_fill_table(uint16_t tt_len, uint8_t ttvn,
 							      const void *),
 					      void *cb_data)
 {
-	struct tt_local_entry *tt_local_entry;
+	struct tt_common_entry *tt_common_entry;
 	struct tt_query_packet *tt_response;
 	struct tt_change *tt_change;
 	struct hlist_node *node;
@@ -1065,7 +1054,7 @@ static struct sk_buff *tt_response_fill_table(uint16_t tt_len, uint8_t ttvn,
 	struct sk_buff *skb = NULL;
 	uint16_t tt_tot, tt_count;
 	ssize_t tt_query_size = sizeof(struct tt_query_packet);
-	int i;
+	uint32_t i;
 
 	if (tt_query_size + tt_len > primary_if->soft_iface->mtu) {
 		tt_len = primary_if->soft_iface->mtu - tt_query_size;
@@ -1089,15 +1078,16 @@ static struct sk_buff *tt_response_fill_table(uint16_t tt_len, uint8_t ttvn,
 	for (i = 0; i < hash->size; i++) {
 		head = &hash->table[i];
 
-		hlist_for_each_entry_rcu(tt_local_entry, node,
+		hlist_for_each_entry_rcu(tt_common_entry, node,
 					 head, hash_entry) {
 			if (tt_count == tt_tot)
 				break;
 
-			if ((valid_cb) && (!valid_cb(tt_local_entry, cb_data)))
+			if ((valid_cb) && (!valid_cb(tt_common_entry, cb_data)))
 				continue;
 
-			memcpy(tt_change->addr, tt_local_entry->addr, ETH_ALEN);
+			memcpy(tt_change->addr, tt_common_entry->addr,
+			       ETH_ALEN);
 			tt_change->flags = NO_FLAGS;
 
 			tt_count++;
@@ -1204,11 +1194,11 @@ static bool send_other_tt_response(struct bat_priv *bat_priv,
 		(tt_request->flags & TT_FULL_TABLE ? 'F' : '.'));
 
 	/* Let's get the orig node of the REAL destination */
-	req_dst_orig_node = get_orig_node(bat_priv, tt_request->dst);
+	req_dst_orig_node = orig_hash_find(bat_priv, tt_request->dst);
 	if (!req_dst_orig_node)
 		goto out;
 
-	res_dst_orig_node = get_orig_node(bat_priv, tt_request->src);
+	res_dst_orig_node = orig_hash_find(bat_priv, tt_request->src);
 	if (!res_dst_orig_node)
 		goto out;
 
@@ -1334,7 +1324,7 @@ static bool send_my_tt_response(struct bat_priv *bat_priv,
 	my_ttvn = (uint8_t)atomic_read(&bat_priv->ttvn);
 	req_ttvn = tt_request->ttvn;
 
-	orig_node = get_orig_node(bat_priv, tt_request->src);
+	orig_node = orig_hash_find(bat_priv, tt_request->src);
 	if (!orig_node)
 		goto out;
 
@@ -1514,7 +1504,7 @@ bool is_my_client(struct bat_priv *bat_priv, const uint8_t *addr)
 		goto out;
 	/* Check if the client has been logically deleted (but is kept for
 	 * consistency purpose) */
-	if (tt_local_entry->flags & TT_CLIENT_PENDING)
+	if (tt_local_entry->common.flags & TT_CLIENT_PENDING)
 		goto out;
 	ret = true;
 out:
@@ -1737,45 +1727,53 @@ void tt_free(struct bat_priv *bat_priv)
 	kfree(bat_priv->tt_buff);
 }
 
-/* This function will reset the specified flags from all the entries in
- * the given hash table and will increment num_local_tt for each involved
- * entry */
-static void tt_local_reset_flags(struct bat_priv *bat_priv, uint16_t flags)
+/* This function will enable or disable the specified flags for all the entries
+ * in the given hash table and returns the number of modified entries */
+static uint16_t tt_set_flags(struct hashtable_t *hash, uint16_t flags,
+			     bool enable)
 {
-	int i;
-	struct hashtable_t *hash = bat_priv->tt_local_hash;
+	uint32_t i;
+	uint16_t changed_num = 0;
 	struct hlist_head *head;
 	struct hlist_node *node;
-	struct tt_local_entry *tt_local_entry;
+	struct tt_common_entry *tt_common_entry;
 
 	if (!hash)
-		return;
+		goto out;
 
 	for (i = 0; i < hash->size; i++) {
 		head = &hash->table[i];
 
 		rcu_read_lock();
-		hlist_for_each_entry_rcu(tt_local_entry, node,
+		hlist_for_each_entry_rcu(tt_common_entry, node,
 					 head, hash_entry) {
-			if (!(tt_local_entry->flags & flags))
-				continue;
-			tt_local_entry->flags &= ~flags;
-			atomic_inc(&bat_priv->num_local_tt);
+			if (enable) {
+				if ((tt_common_entry->flags & flags) == flags)
+					continue;
+				tt_common_entry->flags |= flags;
+			} else {
+				if (!(tt_common_entry->flags & flags))
+					continue;
+				tt_common_entry->flags &= ~flags;
+			}
+			changed_num++;
 		}
 		rcu_read_unlock();
 	}
-
+out:
+	return changed_num;
 }
 
 /* Purge out all the tt local entries marked with TT_CLIENT_PENDING */
 static void tt_local_purge_pending_clients(struct bat_priv *bat_priv)
 {
 	struct hashtable_t *hash = bat_priv->tt_local_hash;
+	struct tt_common_entry *tt_common_entry;
 	struct tt_local_entry *tt_local_entry;
 	struct hlist_node *node, *node_tmp;
 	struct hlist_head *head;
 	spinlock_t *list_lock; /* protects write access to the hash lists */
-	int i;
+	uint32_t i;
 
 	if (!hash)
 		return;
@@ -1785,16 +1783,19 @@ static void tt_local_purge_pending_clients(struct bat_priv *bat_priv)
 		list_lock = &hash->list_locks[i];
 
 		spin_lock_bh(list_lock);
-		hlist_for_each_entry_safe(tt_local_entry, node, node_tmp,
+		hlist_for_each_entry_safe(tt_common_entry, node, node_tmp,
 					  head, hash_entry) {
-			if (!(tt_local_entry->flags & TT_CLIENT_PENDING))
+			if (!(tt_common_entry->flags & TT_CLIENT_PENDING))
 				continue;
 
 			bat_dbg(DBG_TT, bat_priv, "Deleting local tt entry "
-				"(%pM): pending\n", tt_local_entry->addr);
+				"(%pM): pending\n", tt_common_entry->addr);
 
 			atomic_dec(&bat_priv->num_local_tt);
 			hlist_del_rcu(node);
+			tt_local_entry = container_of(tt_common_entry,
+						      struct tt_local_entry,
+						      common);
 			tt_local_entry_free_ref(tt_local_entry);
 		}
 		spin_unlock_bh(list_lock);
@@ -1804,7 +1805,11 @@ static void tt_local_purge_pending_clients(struct bat_priv *bat_priv)
 
 void tt_commit_changes(struct bat_priv *bat_priv)
 {
-	tt_local_reset_flags(bat_priv, TT_CLIENT_NEW);
+	uint16_t changed_num = tt_set_flags(bat_priv->tt_local_hash,
+					    TT_CLIENT_NEW, false);
+	/* all the reset entries have now to be effectively counted as local
+	 * entries */
+	atomic_add(changed_num, &bat_priv->num_local_tt);
 	tt_local_purge_pending_clients(bat_priv);
 
 	/* Increment the TTVN only once per OGM interval */
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
index ab8d0fe6df5a..e9eb043719ac 100644
--- a/net/batman-adv/types.h
+++ b/net/batman-adv/types.h
@@ -222,24 +222,24 @@ struct socket_packet {
 	struct icmp_packet_rr icmp_packet;
 };
 
-struct tt_local_entry {
+struct tt_common_entry {
 	uint8_t addr[ETH_ALEN];
 	struct hlist_node hash_entry;
-	unsigned long last_seen;
 	uint16_t flags;
 	atomic_t refcount;
 	struct rcu_head rcu;
 };
 
+struct tt_local_entry {
+	struct tt_common_entry common;
+	unsigned long last_seen;
+};
+
 struct tt_global_entry {
-	uint8_t addr[ETH_ALEN];
-	struct hlist_node hash_entry; /* entry in the global table */
+	struct tt_common_entry common;
 	struct orig_node *orig_node;
 	uint8_t ttvn;
-	uint16_t flags; /* only TT_GLOBAL_ROAM is used */
 	unsigned long roam_at; /* time at which TT_GLOBAL_ROAM was set */
-	atomic_t refcount;
-	struct rcu_head rcu;
 };
 
 struct tt_change_node {
diff --git a/net/batman-adv/vis.c b/net/batman-adv/vis.c
index f81a6b668b0c..cc3b9f2f3b5d 100644
--- a/net/batman-adv/vis.c
+++ b/net/batman-adv/vis.c
@@ -66,7 +66,7 @@ static int vis_info_cmp(const struct hlist_node *node, const void *data2)
 
 /* hash function to choose an entry in a hash table of given size */
 /* hash algorithm from http://en.wikipedia.org/wiki/Hash_table */
-static int vis_info_choose(const void *data, int size)
+static uint32_t vis_info_choose(const void *data, uint32_t size)
 {
 	const struct vis_info *vis_info = data;
 	const struct vis_packet *packet;
@@ -96,7 +96,7 @@ static struct vis_info *vis_hash_find(struct bat_priv *bat_priv,
 	struct hlist_head *head;
 	struct hlist_node *node;
 	struct vis_info *vis_info, *vis_info_tmp = NULL;
-	int index;
+	uint32_t index;
 
 	if (!hash)
 		return NULL;
@@ -202,7 +202,8 @@ int vis_seq_print_text(struct seq_file *seq, void *offset)
 	HLIST_HEAD(vis_if_list);
 	struct if_list_entry *entry;
 	struct hlist_node *pos, *n;
-	int i, j, ret = 0;
+	uint32_t i;
+	int j, ret = 0;
 	int vis_server = atomic_read(&bat_priv->vis_mode);
 	size_t buff_pos, buf_size;
 	char *buff;
@@ -556,7 +557,8 @@ static int find_best_vis_server(struct bat_priv *bat_priv,
 	struct hlist_head *head;
 	struct orig_node *orig_node;
 	struct vis_packet *packet;
-	int best_tq = -1, i;
+	int best_tq = -1;
+	uint32_t i;
 
 	packet = (struct vis_packet *)info->skb_packet->data;
 
@@ -607,8 +609,9 @@ static int generate_vis_packet(struct bat_priv *bat_priv)
 	struct vis_info *info = bat_priv->my_vis_info;
 	struct vis_packet *packet = (struct vis_packet *)info->skb_packet->data;
 	struct vis_info_entry *entry;
-	struct tt_local_entry *tt_local_entry;
-	int best_tq = -1, i;
+	struct tt_common_entry *tt_common_entry;
+	int best_tq = -1;
+	uint32_t i;
 
 	info->first_seen = jiffies;
 	packet->vis_type = atomic_read(&bat_priv->vis_mode);
@@ -669,13 +672,13 @@ next:
 		head = &hash->table[i];
 
 		rcu_read_lock();
-		hlist_for_each_entry_rcu(tt_local_entry, node, head,
+		hlist_for_each_entry_rcu(tt_common_entry, node, head,
 					 hash_entry) {
 			entry = (struct vis_info_entry *)
 					skb_put(info->skb_packet,
 						sizeof(*entry));
 			memset(entry->src, 0, ETH_ALEN);
-			memcpy(entry->dest, tt_local_entry->addr, ETH_ALEN);
+			memcpy(entry->dest, tt_common_entry->addr, ETH_ALEN);
 			entry->quality = 0; /* 0 means TT */
 			packet->entries++;
 
@@ -696,7 +699,7 @@ unlock:
  * held */
 static void purge_vis_packets(struct bat_priv *bat_priv)
 {
-	int i;
+	uint32_t i;
 	struct hashtable_t *hash = bat_priv->vis_hash;
 	struct hlist_node *node, *node_tmp;
 	struct hlist_head *head;
@@ -733,7 +736,7 @@ static void broadcast_vis_packet(struct bat_priv *bat_priv,
 	struct sk_buff *skb;
 	struct hard_iface *hard_iface;
 	uint8_t dstaddr[ETH_ALEN];
-	int i;
+	uint32_t i;
 
 
 	packet = (struct vis_packet *)info->skb_packet->data;