Merge branch 'batman-adv/next' of git://git.open-mesh.org/linux-merge

Documentation/networking/batman-adv.txt

···
-[state: 17-04-2011]
+[state: 21-08-2011]
 
 BATMAN-ADV
 ----------
···
 folder:
 
 #  ls  /sys/class/net/bat0/mesh/
-#  aggregated_ogms  gw_bandwidth  hop_penalty
-#  bonding          gw_mode       orig_interval
-#  fragmentation    gw_sel_class  vis_mode
+# aggregated_ogms   fragmentation gw_sel_class   vis_mode
+# ap_isolation      gw_bandwidth  hop_penalty
+# bonding           gw_mode       orig_interval
 
 
 There is a special folder for debugging information:

net/batman-adv/Makefile

···
 #
 
 obj-$(CONFIG_BATMAN_ADV) += batman-adv.o
-batman-adv-y += aggregation.o
 batman-adv-y += bat_debugfs.o
+batman-adv-y += bat_iv_ogm.o
 batman-adv-y += bat_sysfs.o
 batman-adv-y += bitarray.o
 batman-adv-y += gateway_client.o

net/batman-adv/aggregation.c

···
-/*
- * Copyright (C) 2007-2011 B.A.T.M.A.N. contributors:
- *
- * Marek Lindner, Simon Wunderlich
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-#include "main.h"
-#include "translation-table.h"
-#include "aggregation.h"
-#include "send.h"
-#include "routing.h"
-#include "hard-interface.h"
-
-/* return true if new_packet can be aggregated with forw_packet */
-static bool can_aggregate_with(const struct batman_packet *new_batman_packet,
-			       struct bat_priv *bat_priv,
-			       int packet_len,
-			       unsigned long send_time,
-			       bool directlink,
-			       const struct hard_iface *if_incoming,
-			       const struct forw_packet *forw_packet)
-{
-	struct batman_packet *batman_packet =
-		(struct batman_packet *)forw_packet->skb->data;
-	int aggregated_bytes = forw_packet->packet_len + packet_len;
-	struct hard_iface *primary_if = NULL;
-	bool res = false;
-
-	/**
-	 * we can aggregate the current packet to this aggregated packet
-	 * if:
-	 *
-	 * - the send time is within our MAX_AGGREGATION_MS time
-	 * - the resulting packet wont be bigger than
-	 *   MAX_AGGREGATION_BYTES
-	 */
-
-	if (time_before(send_time, forw_packet->send_time) &&
-	    time_after_eq(send_time + msecs_to_jiffies(MAX_AGGREGATION_MS),
-					forw_packet->send_time) &&
-	    (aggregated_bytes <= MAX_AGGREGATION_BYTES)) {
-
-		/**
-		 * check aggregation compatibility
-		 * -> direct link packets are broadcasted on
-		 *    their interface only
-		 * -> aggregate packet if the current packet is
-		 *    a "global" packet as well as the base
-		 *    packet
-		 */
-
-		primary_if = primary_if_get_selected(bat_priv);
-		if (!primary_if)
-			goto out;
-
-		/* packets without direct link flag and high TTL
-		 * are flooded through the net  */
-		if ((!directlink) &&
-		    (!(batman_packet->flags & DIRECTLINK)) &&
-		    (batman_packet->ttl != 1) &&
-
-		    /* own packets originating non-primary
-		     * interfaces leave only that interface */
-		    ((!forw_packet->own) ||
-		     (forw_packet->if_incoming == primary_if))) {
-			res = true;
-			goto out;
-		}
-
-		/* if the incoming packet is sent via this one
-		 * interface only - we still can aggregate */
-		if ((directlink) &&
-		    (new_batman_packet->ttl == 1) &&
-		    (forw_packet->if_incoming == if_incoming) &&
-
-		    /* packets from direct neighbors or
-		     * own secondary interface packets
-		     * (= secondary interface packets in general) */
-		    (batman_packet->flags & DIRECTLINK ||
-		     (forw_packet->own &&
-		      forw_packet->if_incoming != primary_if))) {
-			res = true;
-			goto out;
-		}
-	}
-
-out:
-	if (primary_if)
-		hardif_free_ref(primary_if);
-	return res;
-}
-
-/* create a new aggregated packet and add this packet to it */
-static void new_aggregated_packet(const unsigned char *packet_buff,
-				  int packet_len, unsigned long send_time,
-				  bool direct_link,
-				  struct hard_iface *if_incoming,
-				  int own_packet)
-{
-	struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
-	struct forw_packet *forw_packet_aggr;
-	unsigned char *skb_buff;
-
-	if (!atomic_inc_not_zero(&if_incoming->refcount))
-		return;
-
-	/* own packet should always be scheduled */
-	if (!own_packet) {
-		if (!atomic_dec_not_zero(&bat_priv->batman_queue_left)) {
-			bat_dbg(DBG_BATMAN, bat_priv,
-				"batman packet queue full\n");
-			goto out;
-		}
-	}
-
-	forw_packet_aggr = kmalloc(sizeof(*forw_packet_aggr), GFP_ATOMIC);
-	if (!forw_packet_aggr) {
-		if (!own_packet)
-			atomic_inc(&bat_priv->batman_queue_left);
-		goto out;
-	}
-
-	if ((atomic_read(&bat_priv->aggregated_ogms)) &&
-	    (packet_len < MAX_AGGREGATION_BYTES))
-		forw_packet_aggr->skb = dev_alloc_skb(MAX_AGGREGATION_BYTES +
-						      sizeof(struct ethhdr));
-	else
-		forw_packet_aggr->skb = dev_alloc_skb(packet_len +
-						      sizeof(struct ethhdr));
-
-	if (!forw_packet_aggr->skb) {
-		if (!own_packet)
-			atomic_inc(&bat_priv->batman_queue_left);
-		kfree(forw_packet_aggr);
-		goto out;
-	}
-	skb_reserve(forw_packet_aggr->skb, sizeof(struct ethhdr));
-
-	INIT_HLIST_NODE(&forw_packet_aggr->list);
-
-	skb_buff = skb_put(forw_packet_aggr->skb, packet_len);
-	forw_packet_aggr->packet_len = packet_len;
-	memcpy(skb_buff, packet_buff, packet_len);
-
-	forw_packet_aggr->own = own_packet;
-	forw_packet_aggr->if_incoming = if_incoming;
-	forw_packet_aggr->num_packets = 0;
-	forw_packet_aggr->direct_link_flags = NO_FLAGS;
-	forw_packet_aggr->send_time = send_time;
-
-	/* save packet direct link flag status */
-	if (direct_link)
-		forw_packet_aggr->direct_link_flags |= 1;
-
-	/* add new packet to packet list */
-	spin_lock_bh(&bat_priv->forw_bat_list_lock);
-	hlist_add_head(&forw_packet_aggr->list, &bat_priv->forw_bat_list);
-	spin_unlock_bh(&bat_priv->forw_bat_list_lock);
-
-	/* start timer for this packet */
-	INIT_DELAYED_WORK(&forw_packet_aggr->delayed_work,
-			  send_outstanding_bat_packet);
-	queue_delayed_work(bat_event_workqueue,
-			   &forw_packet_aggr->delayed_work,
-			   send_time - jiffies);
-
-	return;
-out:
-	hardif_free_ref(if_incoming);
-}
-
-/* aggregate a new packet into the existing aggregation */
-static void aggregate(struct forw_packet *forw_packet_aggr,
-		      const unsigned char *packet_buff, int packet_len,
-		      bool direct_link)
-{
-	unsigned char *skb_buff;
-
-	skb_buff = skb_put(forw_packet_aggr->skb, packet_len);
-	memcpy(skb_buff, packet_buff, packet_len);
-	forw_packet_aggr->packet_len += packet_len;
-	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);
-}
-
-void add_bat_packet_to_list(struct bat_priv *bat_priv,
-			    unsigned char *packet_buff, int packet_len,
-			    struct hard_iface *if_incoming, int own_packet,
-			    unsigned long send_time)
-{
-	/**
-	 * _aggr -> pointer to the packet we want to aggregate with
-	 * _pos -> pointer to the position in the queue
-	 */
-	struct forw_packet *forw_packet_aggr = NULL, *forw_packet_pos = NULL;
-	struct hlist_node *tmp_node;
-	struct batman_packet *batman_packet =
-		(struct batman_packet *)packet_buff;
-	bool direct_link = batman_packet->flags & DIRECTLINK ? 1 : 0;
-
-	/* find position for the packet in the forward queue */
-	spin_lock_bh(&bat_priv->forw_bat_list_lock);
-	/* own packets are not to be aggregated */
-	if ((atomic_read(&bat_priv->aggregated_ogms)) && (!own_packet)) {
-		hlist_for_each_entry(forw_packet_pos, tmp_node,
-				     &bat_priv->forw_bat_list, list) {
-			if (can_aggregate_with(batman_packet,
-					       bat_priv,
-					       packet_len,
-					       send_time,
-					       direct_link,
-					       if_incoming,
-					       forw_packet_pos)) {
-				forw_packet_aggr = forw_packet_pos;
-				break;
-			}
-		}
-	}
-
-	/* nothing to aggregate with - either aggregation disabled or no
-	 * suitable aggregation packet found */
-	if (!forw_packet_aggr) {
-		/* the following section can run without the lock */
-		spin_unlock_bh(&bat_priv->forw_bat_list_lock);
-
-		/**
-		 * if we could not aggregate this packet with one of the others
-		 * we hold it back for a while, so that it might be aggregated
-		 * later on
-		 */
-		if ((!own_packet) &&
-		    (atomic_read(&bat_priv->aggregated_ogms)))
-			send_time += msecs_to_jiffies(MAX_AGGREGATION_MS);
-
-		new_aggregated_packet(packet_buff, packet_len,
-				      send_time, direct_link,
-				      if_incoming, own_packet);
-	} else {
-		aggregate(forw_packet_aggr,
-			  packet_buff, packet_len,
-			  direct_link);
-		spin_unlock_bh(&bat_priv->forw_bat_list_lock);
-	}
-}
-
-/* unpack the aggregated packets and process them one by one */
-void receive_aggr_bat_packet(const struct ethhdr *ethhdr,
-			     unsigned char *packet_buff, int packet_len,
-			     struct hard_iface *if_incoming)
-{
-	struct batman_packet *batman_packet;
-	int buff_pos = 0;
-	unsigned char *tt_buff;
-
-	batman_packet = (struct batman_packet *)packet_buff;
-
-	do {
-		/* network to host order for our 32bit seqno and the
-		   orig_interval */
-		batman_packet->seqno = ntohl(batman_packet->seqno);
-		batman_packet->tt_crc = ntohs(batman_packet->tt_crc);
-
-		tt_buff = packet_buff + buff_pos + BAT_PACKET_LEN;
-
-		receive_bat_packet(ethhdr, batman_packet, tt_buff, if_incoming);
-
-		buff_pos += BAT_PACKET_LEN +
-			tt_len(batman_packet->tt_num_changes);
-
-		batman_packet = (struct batman_packet *)
-			(packet_buff + buff_pos);
-	} while (aggregated_packet(buff_pos, packet_len,
-				   batman_packet->tt_num_changes));
-}

net/batman-adv/aggregation.h net/batman-adv/bat_ogm.h

···
  *
  */
 
-#ifndef _NET_BATMAN_ADV_AGGREGATION_H_
-#define _NET_BATMAN_ADV_AGGREGATION_H_
+#ifndef _NET_BATMAN_ADV_OGM_H_
+#define _NET_BATMAN_ADV_OGM_H_
 
 #include "main.h"
 
-/* is there another aggregated packet here? */
-static inline int aggregated_packet(int buff_pos, int packet_len,
-				    int tt_num_changes)
-{
-	int next_buff_pos = buff_pos + BAT_PACKET_LEN + tt_len(tt_num_changes);
+void bat_ogm_init(struct hard_iface *hard_iface);
+void bat_ogm_init_primary(struct hard_iface *hard_iface);
+void bat_ogm_update_mac(struct hard_iface *hard_iface);
+void bat_ogm_schedule(struct hard_iface *hard_iface, int tt_num_changes);
+void bat_ogm_emit(struct forw_packet *forw_packet);
+void bat_ogm_receive(const struct ethhdr *ethhdr, unsigned char *packet_buff,
+		     int packet_len, struct hard_iface *if_incoming);
 
-	return (next_buff_pos <= packet_len) &&
-		(next_buff_pos <= MAX_AGGREGATION_BYTES);
-}
-
-void add_bat_packet_to_list(struct bat_priv *bat_priv,
-			    unsigned char *packet_buff, int packet_len,
-			    struct hard_iface *if_incoming, int own_packet,
-			    unsigned long send_time);
-void receive_aggr_bat_packet(const struct ethhdr *ethhdr,
-			     unsigned char *packet_buff, int packet_len,
-			     struct hard_iface *if_incoming);
-
-#endif /* _NET_BATMAN_ADV_AGGREGATION_H_ */
+#endif /* _NET_BATMAN_ADV_OGM_H_ */

net/batman-adv/bat_iv_ogm.c

···
+/*
+ * Copyright (C) 2007-2011 B.A.T.M.A.N. contributors:
+ *
+ * Marek Lindner, Simon Wunderlich
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+#include "main.h"
+#include "bat_ogm.h"
+#include "translation-table.h"
+#include "ring_buffer.h"
+#include "originator.h"
+#include "routing.h"
+#include "gateway_common.h"
+#include "gateway_client.h"
+#include "hard-interface.h"
+#include "send.h"
+
+void bat_ogm_init(struct hard_iface *hard_iface)
+{
+	struct batman_ogm_packet *batman_ogm_packet;
+
+	hard_iface->packet_len = BATMAN_OGM_LEN;
+	hard_iface->packet_buff = kmalloc(hard_iface->packet_len, GFP_ATOMIC);
+
+	batman_ogm_packet = (struct batman_ogm_packet *)hard_iface->packet_buff;
+	batman_ogm_packet->packet_type = BAT_OGM;
+	batman_ogm_packet->version = COMPAT_VERSION;
+	batman_ogm_packet->flags = NO_FLAGS;
+	batman_ogm_packet->ttl = 2;
+	batman_ogm_packet->tq = TQ_MAX_VALUE;
+	batman_ogm_packet->tt_num_changes = 0;
+	batman_ogm_packet->ttvn = 0;
+}
+
+void bat_ogm_init_primary(struct hard_iface *hard_iface)
+{
+	struct batman_ogm_packet *batman_ogm_packet;
+
+	batman_ogm_packet = (struct batman_ogm_packet *)hard_iface->packet_buff;
+	batman_ogm_packet->flags = PRIMARIES_FIRST_HOP;
+	batman_ogm_packet->ttl = TTL;
+}
+
+void bat_ogm_update_mac(struct hard_iface *hard_iface)
+{
+	struct batman_ogm_packet *batman_ogm_packet;
+
+	batman_ogm_packet = (struct batman_ogm_packet *)hard_iface->packet_buff;
+	memcpy(batman_ogm_packet->orig,
+	       hard_iface->net_dev->dev_addr, ETH_ALEN);
+	memcpy(batman_ogm_packet->prev_sender,
+	       hard_iface->net_dev->dev_addr, ETH_ALEN);
+}
+
+/* when do we schedule our own ogm to be sent */
+static unsigned long bat_ogm_emit_send_time(const struct bat_priv *bat_priv)
+{
+	return jiffies + msecs_to_jiffies(
+		   atomic_read(&bat_priv->orig_interval) -
+		   JITTER + (random32() % 2*JITTER));
+}
+
+/* when do we schedule a ogm packet to be sent */
+static unsigned long bat_ogm_fwd_send_time(void)
+{
+	return jiffies + msecs_to_jiffies(random32() % (JITTER/2));
+}
+
+/* apply hop penalty for a normal link */
+static uint8_t hop_penalty(uint8_t tq, const struct bat_priv *bat_priv)
+{
+	int hop_penalty = atomic_read(&bat_priv->hop_penalty);
+	return (tq * (TQ_MAX_VALUE - hop_penalty)) / (TQ_MAX_VALUE);
+}
+
+/* is there another aggregated packet here? */
+static int bat_ogm_aggr_packet(int buff_pos, int packet_len,
+			       int tt_num_changes)
+{
+	int next_buff_pos = buff_pos + BATMAN_OGM_LEN + tt_len(tt_num_changes);
+
+	return (next_buff_pos <= packet_len) &&
+		(next_buff_pos <= MAX_AGGREGATION_BYTES);
+}
+
+/* send a batman ogm to a given interface */
+static void bat_ogm_send_to_if(struct forw_packet *forw_packet,
+			       struct hard_iface *hard_iface)
+{
+	struct bat_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
+	char *fwd_str;
+	uint8_t packet_num;
+	int16_t buff_pos;
+	struct batman_ogm_packet *batman_ogm_packet;
+	struct sk_buff *skb;
+
+	if (hard_iface->if_status != IF_ACTIVE)
+		return;
+
+	packet_num = 0;
+	buff_pos = 0;
+	batman_ogm_packet = (struct batman_ogm_packet *)forw_packet->skb->data;
+
+	/* adjust all flags and log packets */
+	while (bat_ogm_aggr_packet(buff_pos, forw_packet->packet_len,
+				   batman_ogm_packet->tt_num_changes)) {
+
+		/* 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))
+			batman_ogm_packet->flags |= DIRECTLINK;
+		else
+			batman_ogm_packet->flags &= ~DIRECTLINK;
+
+		fwd_str = (packet_num > 0 ? "Forwarding" : (forw_packet->own ?
+							    "Sending own" :
+							    "Forwarding"));
+		bat_dbg(DBG_BATMAN, bat_priv,
+			"%s %spacket (originator %pM, seqno %d, TQ %d, TTL %d,"
+			" IDF %s, ttvn %d) on interface %s [%pM]\n",
+			fwd_str, (packet_num > 0 ? "aggregated " : ""),
+			batman_ogm_packet->orig,
+			ntohl(batman_ogm_packet->seqno),
+			batman_ogm_packet->tq, batman_ogm_packet->ttl,
+			(batman_ogm_packet->flags & DIRECTLINK ?
+			 "on" : "off"),
+			batman_ogm_packet->ttvn, hard_iface->net_dev->name,
+			hard_iface->net_dev->dev_addr);
+
+		buff_pos += BATMAN_OGM_LEN +
+				tt_len(batman_ogm_packet->tt_num_changes);
+		packet_num++;
+		batman_ogm_packet = (struct batman_ogm_packet *)
+					(forw_packet->skb->data + buff_pos);
+	}
+
+	/* create clone because function is called more than once */
+	skb = skb_clone(forw_packet->skb, GFP_ATOMIC);
+	if (skb)
+		send_skb_packet(skb, hard_iface, broadcast_addr);
+}
+
+/* send a batman ogm packet */
+void bat_ogm_emit(struct forw_packet *forw_packet)
+{
+	struct hard_iface *hard_iface;
+	struct net_device *soft_iface;
+	struct bat_priv *bat_priv;
+	struct hard_iface *primary_if = NULL;
+	struct batman_ogm_packet *batman_ogm_packet;
+	unsigned char directlink;
+
+	batman_ogm_packet = (struct batman_ogm_packet *)
+						(forw_packet->skb->data);
+	directlink = (batman_ogm_packet->flags & DIRECTLINK ? 1 : 0);
+
+	if (!forw_packet->if_incoming) {
+		pr_err("Error - can't forward packet: incoming iface not "
+		       "specified\n");
+		goto out;
+	}
+
+	soft_iface = forw_packet->if_incoming->soft_iface;
+	bat_priv = netdev_priv(soft_iface);
+
+	if (forw_packet->if_incoming->if_status != IF_ACTIVE)
+		goto out;
+
+	primary_if = primary_if_get_selected(bat_priv);
+	if (!primary_if)
+		goto out;
+
+	/* multihomed peer assumed */
+	/* non-primary OGMs are only broadcasted on their interface */
+	if ((directlink && (batman_ogm_packet->ttl == 1)) ||
+	    (forw_packet->own && (forw_packet->if_incoming != primary_if))) {
+
+		/* FIXME: what about aggregated packets ? */
+		bat_dbg(DBG_BATMAN, bat_priv,
+			"%s packet (originator %pM, seqno %d, TTL %d) "
+			"on interface %s [%pM]\n",
+			(forw_packet->own ? "Sending own" : "Forwarding"),
+			batman_ogm_packet->orig,
+			ntohl(batman_ogm_packet->seqno),
+			batman_ogm_packet->ttl,
+			forw_packet->if_incoming->net_dev->name,
+			forw_packet->if_incoming->net_dev->dev_addr);
+
+		/* skb is only used once and than forw_packet is free'd */
+		send_skb_packet(forw_packet->skb, forw_packet->if_incoming,
+				broadcast_addr);
+		forw_packet->skb = NULL;
+
+		goto out;
+	}
+
+	/* broadcast on every interface */
+	rcu_read_lock();
+	list_for_each_entry_rcu(hard_iface, &hardif_list, list) {
+		if (hard_iface->soft_iface != soft_iface)
+			continue;
+
+		bat_ogm_send_to_if(forw_packet, hard_iface);
+	}
+	rcu_read_unlock();
+
+out:
+	if (primary_if)
+		hardif_free_ref(primary_if);
+}
+
+/* return true if new_packet can be aggregated with forw_packet */
+static bool bat_ogm_can_aggregate(const struct batman_ogm_packet
+							*new_batman_ogm_packet,
+				  struct bat_priv *bat_priv,
+				  int packet_len, unsigned long send_time,
+				  bool directlink,
+				  const struct hard_iface *if_incoming,
+				  const struct forw_packet *forw_packet)
+{
+	struct batman_ogm_packet *batman_ogm_packet;
+	int aggregated_bytes = forw_packet->packet_len + packet_len;
+	struct hard_iface *primary_if = NULL;
+	bool res = false;
+
+	batman_ogm_packet = (struct batman_ogm_packet *)forw_packet->skb->data;
+
+	/**
+	 * we can aggregate the current packet to this aggregated packet
+	 * if:
+	 *
+	 * - the send time is within our MAX_AGGREGATION_MS time
+	 * - the resulting packet wont be bigger than
+	 *   MAX_AGGREGATION_BYTES
+	 */
+
+	if (time_before(send_time, forw_packet->send_time) &&
+	    time_after_eq(send_time + msecs_to_jiffies(MAX_AGGREGATION_MS),
+					forw_packet->send_time) &&
+	    (aggregated_bytes <= MAX_AGGREGATION_BYTES)) {
+
+		/**
+		 * check aggregation compatibility
+		 * -> direct link packets are broadcasted on
+		 *    their interface only
+		 * -> aggregate packet if the current packet is
+		 *    a "global" packet as well as the base
+		 *    packet
+		 */
+
+		primary_if = primary_if_get_selected(bat_priv);
+		if (!primary_if)
+			goto out;
+
+		/* packets without direct link flag and high TTL
+		 * are flooded through the net  */
+		if ((!directlink) &&
+		    (!(batman_ogm_packet->flags & DIRECTLINK)) &&
+		    (batman_ogm_packet->ttl != 1) &&
+
+		    /* own packets originating non-primary
+		     * interfaces leave only that interface */
+		    ((!forw_packet->own) ||
+		     (forw_packet->if_incoming == primary_if))) {
+			res = true;
+			goto out;
+		}
+
+		/* if the incoming packet is sent via this one
+		 * interface only - we still can aggregate */
+		if ((directlink) &&
+		    (new_batman_ogm_packet->ttl == 1) &&
+		    (forw_packet->if_incoming == if_incoming) &&
+
+		    /* packets from direct neighbors or
+		     * own secondary interface packets
+		     * (= secondary interface packets in general) */
+		    (batman_ogm_packet->flags & DIRECTLINK ||
+		     (forw_packet->own &&
+		      forw_packet->if_incoming != primary_if))) {
+			res = true;
+			goto out;
+		}
+	}
+
+out:
+	if (primary_if)
+		hardif_free_ref(primary_if);
+	return res;
+}
+
+/* create a new aggregated packet and add this packet to it */
+static void bat_ogm_aggregate_new(const unsigned char *packet_buff,
+				  int packet_len, unsigned long send_time,
+				  bool direct_link,
+				  struct hard_iface *if_incoming,
+				  int own_packet)
+{
+	struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
+	struct forw_packet *forw_packet_aggr;
+	unsigned char *skb_buff;
+
+	if (!atomic_inc_not_zero(&if_incoming->refcount))
+		return;
+
+	/* own packet should always be scheduled */
+	if (!own_packet) {
+		if (!atomic_dec_not_zero(&bat_priv->batman_queue_left)) {
+			bat_dbg(DBG_BATMAN, bat_priv,
+				"batman packet queue full\n");
+			goto out;
+		}
+	}
+
+	forw_packet_aggr = kmalloc(sizeof(*forw_packet_aggr), GFP_ATOMIC);
+	if (!forw_packet_aggr) {
+		if (!own_packet)
+			atomic_inc(&bat_priv->batman_queue_left);
+		goto out;
+	}
+
+	if ((atomic_read(&bat_priv->aggregated_ogms)) &&
+	    (packet_len < MAX_AGGREGATION_BYTES))
+		forw_packet_aggr->skb = dev_alloc_skb(MAX_AGGREGATION_BYTES +
+						      sizeof(struct ethhdr));
+	else
+		forw_packet_aggr->skb = dev_alloc_skb(packet_len +
+						      sizeof(struct ethhdr));
+
+	if (!forw_packet_aggr->skb) {
+		if (!own_packet)
+			atomic_inc(&bat_priv->batman_queue_left);
+		kfree(forw_packet_aggr);
+		goto out;
+	}
+	skb_reserve(forw_packet_aggr->skb, sizeof(struct ethhdr));
+
+	INIT_HLIST_NODE(&forw_packet_aggr->list);
+
+	skb_buff = skb_put(forw_packet_aggr->skb, packet_len);
+	forw_packet_aggr->packet_len = packet_len;
+	memcpy(skb_buff, packet_buff, packet_len);
+
+	forw_packet_aggr->own = own_packet;
+	forw_packet_aggr->if_incoming = if_incoming;
+	forw_packet_aggr->num_packets = 0;
+	forw_packet_aggr->direct_link_flags = NO_FLAGS;
+	forw_packet_aggr->send_time = send_time;
+
+	/* save packet direct link flag status */
+	if (direct_link)
+		forw_packet_aggr->direct_link_flags |= 1;
+
+	/* add new packet to packet list */
+	spin_lock_bh(&bat_priv->forw_bat_list_lock);
+	hlist_add_head(&forw_packet_aggr->list, &bat_priv->forw_bat_list);
+	spin_unlock_bh(&bat_priv->forw_bat_list_lock);
+
+	/* start timer for this packet */
+	INIT_DELAYED_WORK(&forw_packet_aggr->delayed_work,
+			  send_outstanding_bat_ogm_packet);
+	queue_delayed_work(bat_event_workqueue,
+			   &forw_packet_aggr->delayed_work,
+			   send_time - jiffies);
+
+	return;
+out:
+	hardif_free_ref(if_incoming);
+}
+
+/* aggregate a new packet into the existing ogm packet */
+static void bat_ogm_aggregate(struct forw_packet *forw_packet_aggr,
+			      const unsigned char *packet_buff,
+			      int packet_len, bool direct_link)
+{
+	unsigned char *skb_buff;
+
+	skb_buff = skb_put(forw_packet_aggr->skb, packet_len);
+	memcpy(skb_buff, packet_buff, packet_len);
+	forw_packet_aggr->packet_len += packet_len;
+	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);
+}
+
+static void bat_ogm_queue_add(struct bat_priv *bat_priv,
+			      unsigned char *packet_buff,
+			      int packet_len, struct hard_iface *if_incoming,
+			      int own_packet, unsigned long send_time)
+{
+	/**
+	 * _aggr -> pointer to the packet we want to aggregate with
+	 * _pos -> pointer to the position in the queue
+	 */
+	struct forw_packet *forw_packet_aggr = NULL, *forw_packet_pos = NULL;
+	struct hlist_node *tmp_node;
+	struct batman_ogm_packet *batman_ogm_packet;
+	bool direct_link;
+
+	batman_ogm_packet = (struct batman_ogm_packet *)packet_buff;
+	direct_link = batman_ogm_packet->flags & DIRECTLINK ? 1 : 0;
+
+	/* find position for the packet in the forward queue */
+	spin_lock_bh(&bat_priv->forw_bat_list_lock);
+	/* own packets are not to be aggregated */
+	if ((atomic_read(&bat_priv->aggregated_ogms)) && (!own_packet)) {
+		hlist_for_each_entry(forw_packet_pos, tmp_node,
+				     &bat_priv->forw_bat_list, list) {
+			if (bat_ogm_can_aggregate(batman_ogm_packet,
+						  bat_priv, packet_len,
+						  send_time, direct_link,
+						  if_incoming,
+						  forw_packet_pos)) {
+				forw_packet_aggr = forw_packet_pos;
+				break;
+			}
+		}
+	}
+
+	/* nothing to aggregate with - either aggregation disabled or no
+	 * suitable aggregation packet found */
+	if (!forw_packet_aggr) {
+		/* the following section can run without the lock */
+		spin_unlock_bh(&bat_priv->forw_bat_list_lock);
+
+		/**
+		 * if we could not aggregate this packet with one of the others
+		 * we hold it back for a while, so that it might be aggregated
+		 * later on
+		 */
+		if ((!own_packet) &&
+		    (atomic_read(&bat_priv->aggregated_ogms)))
+			send_time += msecs_to_jiffies(MAX_AGGREGATION_MS);
+
+		bat_ogm_aggregate_new(packet_buff, packet_len,
+				      send_time, direct_link,
+				      if_incoming, own_packet);
+	} else {
+		bat_ogm_aggregate(forw_packet_aggr, packet_buff, packet_len,
+				  direct_link);
+		spin_unlock_bh(&bat_priv->forw_bat_list_lock);
+	}
+}
+
+static void bat_ogm_forward(struct orig_node *orig_node,
+			    const struct ethhdr *ethhdr,
+			    struct batman_ogm_packet *batman_ogm_packet,
+			    int directlink, struct hard_iface *if_incoming)
+{
+	struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
+	struct neigh_node *router;
+	uint8_t in_tq, in_ttl, tq_avg = 0;
+	uint8_t tt_num_changes;
+
+	if (batman_ogm_packet->ttl <= 1) {
+		bat_dbg(DBG_BATMAN, bat_priv, "ttl exceeded\n");
+		return;
+	}
+
+	router = orig_node_get_router(orig_node);
+
+	in_tq = batman_ogm_packet->tq;
+	in_ttl = batman_ogm_packet->ttl;
+	tt_num_changes = batman_ogm_packet->tt_num_changes;
+
+	batman_ogm_packet->ttl--;
+	memcpy(batman_ogm_packet->prev_sender, ethhdr->h_source, ETH_ALEN);
+
+	/* rebroadcast tq of our best ranking neighbor to ensure the rebroadcast
+	 * of our best tq value */
+	if (router && router->tq_avg != 0) {
+
+		/* rebroadcast ogm of best ranking neighbor as is */
+		if (!compare_eth(router->addr, ethhdr->h_source)) {
+			batman_ogm_packet->tq = router->tq_avg;
+
+			if (router->last_ttl)
+				batman_ogm_packet->ttl = router->last_ttl - 1;
+		}
+
+		tq_avg = router->tq_avg;
+	}
+
+	if (router)
+		neigh_node_free_ref(router);
+
+	/* apply hop penalty */
+	batman_ogm_packet->tq = hop_penalty(batman_ogm_packet->tq, bat_priv);
+
+	bat_dbg(DBG_BATMAN, bat_priv,
+		"Forwarding packet: tq_orig: %i, tq_avg: %i, "
+		"tq_forw: %i, ttl_orig: %i, ttl_forw: %i\n",
+		in_tq, tq_avg, batman_ogm_packet->tq, in_ttl - 1,
+		batman_ogm_packet->ttl);
+
+	batman_ogm_packet->seqno = htonl(batman_ogm_packet->seqno);
+	batman_ogm_packet->tt_crc = htons(batman_ogm_packet->tt_crc);
+
+	/* switch of primaries first hop flag when forwarding */
+	batman_ogm_packet->flags &= ~PRIMARIES_FIRST_HOP;
+	if (directlink)
+		batman_ogm_packet->flags |= DIRECTLINK;
+	else
+		batman_ogm_packet->flags &= ~DIRECTLINK;
+
+	bat_ogm_queue_add(bat_priv, (unsigned char *)batman_ogm_packet,
+			  BATMAN_OGM_LEN + tt_len(tt_num_changes),
+			  if_incoming, 0, bat_ogm_fwd_send_time());
+}
+
+void bat_ogm_schedule(struct hard_iface *hard_iface, int tt_num_changes)
+{
+	struct bat_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
+	struct batman_ogm_packet *batman_ogm_packet;
+	struct hard_iface *primary_if;
+	int vis_server;
+
+	vis_server = atomic_read(&bat_priv->vis_mode);
+	primary_if = primary_if_get_selected(bat_priv);
+
+	batman_ogm_packet = (struct batman_ogm_packet *)hard_iface->packet_buff;
+
+	/* change sequence number to network order */
+	batman_ogm_packet->seqno =
+			htonl((uint32_t)atomic_read(&hard_iface->seqno));
+
+	batman_ogm_packet->ttvn = atomic_read(&bat_priv->ttvn);
+	batman_ogm_packet->tt_crc = htons((uint16_t)
+						atomic_read(&bat_priv->tt_crc));
+	if (tt_num_changes >= 0)
+		batman_ogm_packet->tt_num_changes = tt_num_changes;
+
+	if (vis_server == VIS_TYPE_SERVER_SYNC)
+		batman_ogm_packet->flags |= VIS_SERVER;
+	else
+		batman_ogm_packet->flags &= ~VIS_SERVER;
+
+	if ((hard_iface == primary_if) &&
+	    (atomic_read(&bat_priv->gw_mode) == GW_MODE_SERVER))
+		batman_ogm_packet->gw_flags =
+				(uint8_t)atomic_read(&bat_priv->gw_bandwidth);
+	else
+		batman_ogm_packet->gw_flags = NO_FLAGS;
+
+	atomic_inc(&hard_iface->seqno);
+
+	slide_own_bcast_window(hard_iface);
+	bat_ogm_queue_add(bat_priv, hard_iface->packet_buff,
+			  hard_iface->packet_len, hard_iface, 1,
+			  bat_ogm_emit_send_time(bat_priv));
+
+	if (primary_if)
+		hardif_free_ref(primary_if);
+}
+
+static void bat_ogm_orig_update(struct bat_priv *bat_priv,
+				struct orig_node *orig_node,
+				const struct ethhdr *ethhdr,
+				const struct batman_ogm_packet
+							*batman_ogm_packet,
+				struct hard_iface *if_incoming,
+				const unsigned char *tt_buff, int is_duplicate)
+{
+	struct neigh_node *neigh_node = NULL, *tmp_neigh_node = NULL;
+	struct neigh_node *router = NULL;
+	struct orig_node *orig_node_tmp;
+	struct hlist_node *node;
+	uint8_t bcast_own_sum_orig, bcast_own_sum_neigh;
+
+	bat_dbg(DBG_BATMAN, bat_priv, "update_originator(): "
+		"Searching and updating originator entry of received packet\n");
+
+	rcu_read_lock();
+	hlist_for_each_entry_rcu(tmp_neigh_node, node,
+				 &orig_node->neigh_list, list) {
+		if (compare_eth(tmp_neigh_node->addr, ethhdr->h_source) &&
+		    (tmp_neigh_node->if_incoming == if_incoming) &&
+		     atomic_inc_not_zero(&tmp_neigh_node->refcount)) {
+			if (neigh_node)
+				neigh_node_free_ref(neigh_node);
+			neigh_node = tmp_neigh_node;
+			continue;
+		}
+
+		if (is_duplicate)
+			continue;
+
+		spin_lock_bh(&tmp_neigh_node->tq_lock);
+		ring_buffer_set(tmp_neigh_node->tq_recv,
+				&tmp_neigh_node->tq_index, 0);
+		tmp_neigh_node->tq_avg =
+			ring_buffer_avg(tmp_neigh_node->tq_recv);
+		spin_unlock_bh(&tmp_neigh_node->tq_lock);
+	}
+
+	if (!neigh_node) {
+		struct orig_node *orig_tmp;
+
+		orig_tmp = get_orig_node(bat_priv, ethhdr->h_source);
+		if (!orig_tmp)
+			goto unlock;
+
+		neigh_node = create_neighbor(orig_node, orig_tmp,
+					     ethhdr->h_source, if_incoming);
+
+		orig_node_free_ref(orig_tmp);
+		if (!neigh_node)
+			goto unlock;
+	} else
+		bat_dbg(DBG_BATMAN, bat_priv,
+			"Updating existing last-hop neighbor of originator\n");
+
+	rcu_read_unlock();
+
+	orig_node->flags = batman_ogm_packet->flags;
+	neigh_node->last_valid = jiffies;
+
+	spin_lock_bh(&neigh_node->tq_lock);
+	ring_buffer_set(neigh_node->tq_recv,
+			&neigh_node->tq_index,
+			batman_ogm_packet->tq);
+	neigh_node->tq_avg = ring_buffer_avg(neigh_node->tq_recv);
+	spin_unlock_bh(&neigh_node->tq_lock);
+
+	if (!is_duplicate) {
+		orig_node->last_ttl = batman_ogm_packet->ttl;
+		neigh_node->last_ttl = batman_ogm_packet->ttl;
+	}
+
+	bonding_candidate_add(orig_node, neigh_node);
+
+	/* if this neighbor already is our next hop there is nothing
+	 * to change */
+	router = orig_node_get_router(orig_node);
+	if (router == neigh_node)
+		goto update_tt;
+
+	/* if this neighbor does not offer a better TQ we won't consider it */
+	if (router && (router->tq_avg > neigh_node->tq_avg))
+		goto update_tt;
+
+	/* if the TQ is the same and the link not more symmetric we
+	 * won't consider it either */
+	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];
+		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];
+		spin_unlock_bh(&orig_node_tmp->ogm_cnt_lock);
+
+		if (bcast_own_sum_orig >= bcast_own_sum_neigh)
+			goto update_tt;
+	}
+
+	update_route(bat_priv, orig_node, neigh_node);
+
+update_tt:
+	/* I have to check for transtable changes only if the OGM has been
+	 * sent through a primary interface */
+	if (((batman_ogm_packet->orig != ethhdr->h_source) &&
+	     (batman_ogm_packet->ttl > 2)) ||
+	    (batman_ogm_packet->flags & PRIMARIES_FIRST_HOP))
+		tt_update_orig(bat_priv, orig_node, tt_buff,
+			       batman_ogm_packet->tt_num_changes,
+			       batman_ogm_packet->ttvn,
+			       batman_ogm_packet->tt_crc);
+
+	if (orig_node->gw_flags != batman_ogm_packet->gw_flags)
+		gw_node_update(bat_priv, orig_node,
+			       batman_ogm_packet->gw_flags);
+
+	orig_node->gw_flags = batman_ogm_packet->gw_flags;
+
+	/* restart gateway selection if fast or late switching was enabled */
+	if ((orig_node->gw_flags) &&
+	    (atomic_read(&bat_priv->gw_mode) == GW_MODE_CLIENT) &&
+	    (atomic_read(&bat_priv->gw_sel_class) > 2))
+		gw_check_election(bat_priv, orig_node);
+
+	goto out;
+
+unlock:
+	rcu_read_unlock();
+out:
+	if (neigh_node)
+		neigh_node_free_ref(neigh_node);
+	if (router)
+		neigh_node_free_ref(router);
+}
+
+static int bat_ogm_calc_tq(struct orig_node *orig_node,
+			   struct orig_node *orig_neigh_node,
+			   struct batman_ogm_packet *batman_ogm_packet,
+			   struct hard_iface *if_incoming)
+{
+	struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
+	struct neigh_node *neigh_node = NULL, *tmp_neigh_node;
+	struct hlist_node *node;
+	uint8_t total_count;
+	uint8_t orig_eq_count, neigh_rq_count, tq_own;
+	int tq_asym_penalty, ret = 0;
+
+	/* find corresponding one hop neighbor */
+	rcu_read_lock();
+	hlist_for_each_entry_rcu(tmp_neigh_node, node,
+				 &orig_neigh_node->neigh_list, list) {
+
+		if (!compare_eth(tmp_neigh_node->addr, orig_neigh_node->orig))
+			continue;
+
+		if (tmp_neigh_node->if_incoming != if_incoming)
+			continue;
+
+		if (!atomic_inc_not_zero(&tmp_neigh_node->refcount))
+			continue;
+
+		neigh_node = tmp_neigh_node;
+		break;
+	}
+	rcu_read_unlock();
+
+	if (!neigh_node)
+		neigh_node = create_neighbor(orig_neigh_node,
+					     orig_neigh_node,
+					     orig_neigh_node->orig,
+					     if_incoming);
+
+	if (!neigh_node)
+		goto out;
+
+	/* if orig_node is direct neighbor update neigh_node last_valid */
+	if (orig_node == orig_neigh_node)
+		neigh_node->last_valid = jiffies;
+
+	orig_node->last_valid = jiffies;
+
+	/* find packet count of corresponding one hop neighbor */
+	spin_lock_bh(&orig_node->ogm_cnt_lock);
+	orig_eq_count = orig_neigh_node->bcast_own_sum[if_incoming->if_num];
+	neigh_rq_count = neigh_node->real_packet_count;
+	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 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 */
+	if ((total_count < TQ_LOCAL_BIDRECT_SEND_MINIMUM) ||
+	    (neigh_rq_count < TQ_LOCAL_BIDRECT_RECV_MINIMUM))
+		tq_own = 0;
+	else
+		/* neigh_node->real_packet_count is never zero as we
+		 * only purge old information when getting new
+		 * information */
+		tq_own = (TQ_MAX_VALUE * total_count) /	neigh_rq_count;
+
+	/*
+	 * 1 - ((1-x) ** 3), normalized to TQ_MAX_VALUE this does
+	 * affect the nearly-symmetric links only a little, but
+	 * punishes asymmetric links more.  This will give a value
+	 * between 0 and TQ_MAX_VALUE
+	 */
+	tq_asym_penalty = TQ_MAX_VALUE - (TQ_MAX_VALUE *
+				(TQ_LOCAL_WINDOW_SIZE - neigh_rq_count) *
+				(TQ_LOCAL_WINDOW_SIZE - neigh_rq_count) *
+				(TQ_LOCAL_WINDOW_SIZE - neigh_rq_count)) /
+					(TQ_LOCAL_WINDOW_SIZE *
+					 TQ_LOCAL_WINDOW_SIZE *
+					 TQ_LOCAL_WINDOW_SIZE);
+
+	batman_ogm_packet->tq = ((batman_ogm_packet->tq * tq_own
+							* tq_asym_penalty) /
+						(TQ_MAX_VALUE * TQ_MAX_VALUE));
+
+	bat_dbg(DBG_BATMAN, bat_priv,
+		"bidirectional: "
+		"orig = %-15pM neigh = %-15pM => own_bcast = %2i, "
+		"real recv = %2i, local tq: %3i, asym_penalty: %3i, "
+		"total tq: %3i\n",
+		orig_node->orig, orig_neigh_node->orig, total_count,
+		neigh_rq_count, tq_own,	tq_asym_penalty, batman_ogm_packet->tq);
+
+	/* if link has the minimum required transmission quality
+	 * consider it bidirectional */
+	if (batman_ogm_packet->tq >= TQ_TOTAL_BIDRECT_LIMIT)
+		ret = 1;
+
+out:
+	if (neigh_node)
+		neigh_node_free_ref(neigh_node);
+	return ret;
+}
+
+/* processes a batman packet for all interfaces, adjusts the sequence number and
+ * finds out whether it is a duplicate.
+ * returns:
+ *   1 the packet is a duplicate
+ *   0 the packet has not yet been received
+ *  -1 the packet is old and has been received while the seqno window
+ *     was protected. Caller should drop it.
+ */
+static int bat_ogm_update_seqnos(const struct ethhdr *ethhdr,
+				 const struct batman_ogm_packet
+							*batman_ogm_packet,
+				 const struct hard_iface *if_incoming)
+{
+	struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
+	struct orig_node *orig_node;
+	struct neigh_node *tmp_neigh_node;
+	struct hlist_node *node;
+	int is_duplicate = 0;
+	int32_t seq_diff;
+	int need_update = 0;
+	int set_mark, ret = -1;
+
+	orig_node = get_orig_node(bat_priv, batman_ogm_packet->orig);
+	if (!orig_node)
+		return 0;
+
+	spin_lock_bh(&orig_node->ogm_cnt_lock);
+	seq_diff = batman_ogm_packet->seqno - orig_node->last_real_seqno;
+
+	/* signalize caller that the packet is to be dropped. */
+	if (window_protected(bat_priv, seq_diff,
+			     &orig_node->batman_seqno_reset))
+		goto out;
+
+	rcu_read_lock();
+	hlist_for_each_entry_rcu(tmp_neigh_node, node,
+				 &orig_node->neigh_list, list) {
+
+		is_duplicate |= get_bit_status(tmp_neigh_node->real_bits,
+					       orig_node->last_real_seqno,
+					       batman_ogm_packet->seqno);
+
+		if (compare_eth(tmp_neigh_node->addr, ethhdr->h_source) &&
+		    (tmp_neigh_node->if_incoming == if_incoming))
+			set_mark = 1;
+		else
+			set_mark = 0;
+
+		/* if the window moved, set the update flag. */
+		need_update |= bit_get_packet(bat_priv,
+					      tmp_neigh_node->real_bits,
+					      seq_diff, set_mark);
+
+		tmp_neigh_node->real_packet_count =
+			bit_packet_count(tmp_neigh_node->real_bits);
+	}
+	rcu_read_unlock();
+
+	if (need_update) {
+		bat_dbg(DBG_BATMAN, bat_priv,
+			"updating last_seqno: old %d, new %d\n",
+			orig_node->last_real_seqno, batman_ogm_packet->seqno);
+		orig_node->last_real_seqno = batman_ogm_packet->seqno;
+	}
+
+	ret = is_duplicate;
+
+out:
+	spin_unlock_bh(&orig_node->ogm_cnt_lock);
+	orig_node_free_ref(orig_node);
+	return ret;
+}
+
+static void bat_ogm_process(const struct ethhdr *ethhdr,
+			    struct batman_ogm_packet *batman_ogm_packet,
+			    const unsigned char *tt_buff,
+			    struct hard_iface *if_incoming)
+{
+	struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
+	struct hard_iface *hard_iface;
+	struct orig_node *orig_neigh_node, *orig_node;
+	struct neigh_node *router = NULL, *router_router = NULL;
+	struct neigh_node *orig_neigh_router = NULL;
+	int has_directlink_flag;
+	int is_my_addr = 0, is_my_orig = 0, is_my_oldorig = 0;
+	int is_broadcast = 0, is_bidirectional, is_single_hop_neigh;
+	int is_duplicate;
+	uint32_t if_incoming_seqno;
+
+	/* Silently drop when the batman packet is actually not a
+	 * correct packet.
+	 *
+	 * This might happen if a packet is padded (e.g. Ethernet has a
+	 * minimum frame length of 64 byte) and the aggregation interprets
+	 * it as an additional length.
+	 *
+	 * TODO: A more sane solution would be to have a bit in the
+	 * batman_ogm_packet to detect whether the packet is the last
+	 * packet in an aggregation.  Here we expect that the padding
+	 * is always zero (or not 0x01)
+	 */
+	if (batman_ogm_packet->packet_type != BAT_OGM)
+		return;
+
+	/* could be changed by schedule_own_packet() */
+	if_incoming_seqno = atomic_read(&if_incoming->seqno);
+
+	has_directlink_flag = (batman_ogm_packet->flags & DIRECTLINK ? 1 : 0);
+
+	is_single_hop_neigh = (compare_eth(ethhdr->h_source,
+					   batman_ogm_packet->orig) ? 1 : 0);
+
+	bat_dbg(DBG_BATMAN, bat_priv,
+		"Received BATMAN packet via NB: %pM, IF: %s [%pM] "
+		"(from OG: %pM, via prev OG: %pM, seqno %d, ttvn %u, "
+		"crc %u, changes %u, td %d, TTL %d, V %d, IDF %d)\n",
+		ethhdr->h_source, if_incoming->net_dev->name,
+		if_incoming->net_dev->dev_addr, batman_ogm_packet->orig,
+		batman_ogm_packet->prev_sender, batman_ogm_packet->seqno,
+		batman_ogm_packet->ttvn, batman_ogm_packet->tt_crc,
+		batman_ogm_packet->tt_num_changes, batman_ogm_packet->tq,
+		batman_ogm_packet->ttl, batman_ogm_packet->version,
+		has_directlink_flag);
+
+	rcu_read_lock();
+	list_for_each_entry_rcu(hard_iface, &hardif_list, list) {
+		if (hard_iface->if_status != IF_ACTIVE)
+			continue;
+
+		if (hard_iface->soft_iface != if_incoming->soft_iface)
+			continue;
+
+		if (compare_eth(ethhdr->h_source,
+				hard_iface->net_dev->dev_addr))
+			is_my_addr = 1;
+
+		if (compare_eth(batman_ogm_packet->orig,
+				hard_iface->net_dev->dev_addr))
+			is_my_orig = 1;
+
+		if (compare_eth(batman_ogm_packet->prev_sender,
+				hard_iface->net_dev->dev_addr))
+			is_my_oldorig = 1;
+
+		if (is_broadcast_ether_addr(ethhdr->h_source))
+			is_broadcast = 1;
+	}
+	rcu_read_unlock();
+
+	if (batman_ogm_packet->version != COMPAT_VERSION) {
+		bat_dbg(DBG_BATMAN, bat_priv,
+			"Drop packet: incompatible batman version (%i)\n",
+			batman_ogm_packet->version);
+		return;
+	}
+
+	if (is_my_addr) {
+		bat_dbg(DBG_BATMAN, bat_priv,
+			"Drop packet: received my own broadcast (sender: %pM"
+			")\n",
+			ethhdr->h_source);
+		return;
+	}
+
+	if (is_broadcast) {
+		bat_dbg(DBG_BATMAN, bat_priv, "Drop packet: "
+		"ignoring all packets with broadcast source addr (sender: %pM"
+		")\n", ethhdr->h_source);
+		return;
+	}
+
+	if (is_my_orig) {
+		unsigned long *word;
+		int offset;
+
+		orig_neigh_node = get_orig_node(bat_priv, ethhdr->h_source);
+		if (!orig_neigh_node)
+			return;
+
+		/* neighbor has to indicate direct link and it has to
+		 * come via the corresponding interface */
+		/* save packet seqno for bidirectional check */
+		if (has_directlink_flag &&
+		    compare_eth(if_incoming->net_dev->dev_addr,
+				batman_ogm_packet->orig)) {
+			offset = if_incoming->if_num * NUM_WORDS;
+
+			spin_lock_bh(&orig_neigh_node->ogm_cnt_lock);
+			word = &(orig_neigh_node->bcast_own[offset]);
+			bit_mark(word,
+				 if_incoming_seqno -
+						batman_ogm_packet->seqno - 2);
+			orig_neigh_node->bcast_own_sum[if_incoming->if_num] =
+				bit_packet_count(word);
+			spin_unlock_bh(&orig_neigh_node->ogm_cnt_lock);
+		}
+
+		bat_dbg(DBG_BATMAN, bat_priv, "Drop packet: "
+			"originator packet from myself (via neighbor)\n");
+		orig_node_free_ref(orig_neigh_node);
+		return;
+	}
+
+	if (is_my_oldorig) {
+		bat_dbg(DBG_BATMAN, bat_priv,
+			"Drop packet: ignoring all rebroadcast echos (sender: "
+			"%pM)\n", ethhdr->h_source);
+		return;
+	}
+
+	orig_node = get_orig_node(bat_priv, batman_ogm_packet->orig);
+	if (!orig_node)
+		return;
+
+	is_duplicate = bat_ogm_update_seqnos(ethhdr, batman_ogm_packet,
+					     if_incoming);
+
+	if (is_duplicate == -1) {
+		bat_dbg(DBG_BATMAN, bat_priv,
+			"Drop packet: packet within seqno protection time "
+			"(sender: %pM)\n", ethhdr->h_source);
+		goto out;
+	}
+
+	if (batman_ogm_packet->tq == 0) {
+		bat_dbg(DBG_BATMAN, bat_priv,
+			"Drop packet: originator packet with tq equal 0\n");
+		goto out;
+	}
+
+	router = orig_node_get_router(orig_node);
+	if (router)
+		router_router = orig_node_get_router(router->orig_node);
+
+	/* avoid temporary routing loops */
+	if (router && router_router &&
+	    (compare_eth(router->addr, batman_ogm_packet->prev_sender)) &&
+	    !(compare_eth(batman_ogm_packet->orig,
+			  batman_ogm_packet->prev_sender)) &&
+	    (compare_eth(router->addr, router_router->addr))) {
+		bat_dbg(DBG_BATMAN, bat_priv,
+			"Drop packet: ignoring all rebroadcast packets that "
+			"may make me loop (sender: %pM)\n", ethhdr->h_source);
+		goto out;
+	}
+
+	/* if sender is a direct neighbor the sender mac equals
+	 * originator mac */
+	orig_neigh_node = (is_single_hop_neigh ?
+			   orig_node :
+			   get_orig_node(bat_priv, ethhdr->h_source));
+	if (!orig_neigh_node)
+		goto out;
+
+	orig_neigh_router = orig_node_get_router(orig_neigh_node);
+
+	/* drop packet if sender is not a direct neighbor and if we
+	 * don't route towards it */
+	if (!is_single_hop_neigh && (!orig_neigh_router)) {
+		bat_dbg(DBG_BATMAN, bat_priv,
+			"Drop packet: OGM via unknown neighbor!\n");
+		goto out_neigh;
+	}
+
+	is_bidirectional = bat_ogm_calc_tq(orig_node, orig_neigh_node,
+					   batman_ogm_packet, if_incoming);
+
+	bonding_save_primary(orig_node, orig_neigh_node, batman_ogm_packet);
+
+	/* update ranking if it is not a duplicate or has the same
+	 * seqno and similar ttl as the non-duplicate */
+	if (is_bidirectional &&
+	    (!is_duplicate ||
+	     ((orig_node->last_real_seqno == batman_ogm_packet->seqno) &&
+	      (orig_node->last_ttl - 3 <= batman_ogm_packet->ttl))))
+		bat_ogm_orig_update(bat_priv, orig_node, ethhdr,
+				    batman_ogm_packet, if_incoming,
+				    tt_buff, is_duplicate);
+
+	/* is single hop (direct) neighbor */
+	if (is_single_hop_neigh) {
+
+		/* mark direct link on incoming interface */
+		bat_ogm_forward(orig_node, ethhdr, batman_ogm_packet,
+				1, if_incoming);
+
+		bat_dbg(DBG_BATMAN, bat_priv, "Forwarding packet: "
+			"rebroadcast neighbor packet with direct link flag\n");
+		goto out_neigh;
+	}
+
+	/* multihop originator */
+	if (!is_bidirectional) {
+		bat_dbg(DBG_BATMAN, bat_priv,
+			"Drop packet: not received via bidirectional link\n");
+		goto out_neigh;
+	}
+
+	if (is_duplicate) {
+		bat_dbg(DBG_BATMAN, bat_priv,
+			"Drop packet: duplicate packet received\n");
+		goto out_neigh;
+	}
+
+	bat_dbg(DBG_BATMAN, bat_priv,
+		"Forwarding packet: rebroadcast originator packet\n");
+	bat_ogm_forward(orig_node, ethhdr, batman_ogm_packet, 0, if_incoming);
+
+out_neigh:
+	if ((orig_neigh_node) && (!is_single_hop_neigh))
+		orig_node_free_ref(orig_neigh_node);
+out:
+	if (router)
+		neigh_node_free_ref(router);
+	if (router_router)
+		neigh_node_free_ref(router_router);
+	if (orig_neigh_router)
+		neigh_node_free_ref(orig_neigh_router);
+
+	orig_node_free_ref(orig_node);
+}
+
+void bat_ogm_receive(const struct ethhdr *ethhdr, unsigned char *packet_buff,
+		     int packet_len, struct hard_iface *if_incoming)
+{
+	struct batman_ogm_packet *batman_ogm_packet;
+	int buff_pos = 0;
+	unsigned char *tt_buff;
+
+	batman_ogm_packet = (struct batman_ogm_packet *)packet_buff;
+
+	/* unpack the aggregated packets and process them one by one */
+	do {
+		/* network to host order for our 32bit seqno and the
+		   orig_interval */
+		batman_ogm_packet->seqno = ntohl(batman_ogm_packet->seqno);
+		batman_ogm_packet->tt_crc = ntohs(batman_ogm_packet->tt_crc);
+
+		tt_buff = packet_buff + buff_pos + BATMAN_OGM_LEN;
+
+		bat_ogm_process(ethhdr, batman_ogm_packet,
+				tt_buff, if_incoming);
+
+		buff_pos += BATMAN_OGM_LEN +
+				tt_len(batman_ogm_packet->tt_num_changes);
+
+		batman_ogm_packet = (struct batman_ogm_packet *)
+						(packet_buff + buff_pos);
+	} while (bat_ogm_aggr_packet(buff_pos, packet_len,
+				     batman_ogm_packet->tt_num_changes));
+}

net/batman-adv/hard-interface.c

···
 #include "bat_sysfs.h"
 #include "originator.h"
 #include "hash.h"
+#include "bat_ogm.h"
 
 #include <linux/if_arp.h>
 
···
 			      struct hard_iface *new_hard_iface)
 {
 	struct hard_iface *curr_hard_iface;
-	struct batman_packet *batman_packet;
 
 	ASSERT_RTNL();
 
···
 	if (!new_hard_iface)
 		return;
 
-	batman_packet = (struct batman_packet *)(new_hard_iface->packet_buff);
-	batman_packet->flags = PRIMARIES_FIRST_HOP;
-	batman_packet->ttl = TTL;
-
+	bat_ogm_init_primary(new_hard_iface);
 	primary_if_update_addr(bat_priv);
 }
 
···
 		return true;
 
 	return false;
-}
-
-static void update_mac_addresses(struct hard_iface *hard_iface)
-{
-	memcpy(((struct batman_packet *)(hard_iface->packet_buff))->orig,
-	       hard_iface->net_dev->dev_addr, ETH_ALEN);
-	memcpy(((struct batman_packet *)(hard_iface->packet_buff))->prev_sender,
-	       hard_iface->net_dev->dev_addr, ETH_ALEN);
 }
 
 static void check_known_mac_addr(const struct net_device *net_dev)
···
 
 	bat_priv = netdev_priv(hard_iface->soft_iface);
 
-	update_mac_addresses(hard_iface);
+	bat_ogm_update_mac(hard_iface);
 	hard_iface->if_status = IF_TO_BE_ACTIVATED;
 
 	/**
···
 			    const char *iface_name)
 {
 	struct bat_priv *bat_priv;
-	struct batman_packet *batman_packet;
 	struct net_device *soft_iface;
 	int ret;
 
···
 
 	hard_iface->soft_iface = soft_iface;
 	bat_priv = netdev_priv(hard_iface->soft_iface);
-	hard_iface->packet_len = BAT_PACKET_LEN;
-	hard_iface->packet_buff = kmalloc(hard_iface->packet_len, GFP_ATOMIC);
+
+	bat_ogm_init(hard_iface);
 
 	if (!hard_iface->packet_buff) {
 		bat_err(hard_iface->soft_iface, "Can't add interface packet "
···
 		ret = -ENOMEM;
 		goto err;
 	}
-
-	batman_packet = (struct batman_packet *)(hard_iface->packet_buff);
-	batman_packet->packet_type = BAT_PACKET;
-	batman_packet->version = COMPAT_VERSION;
-	batman_packet->flags = NO_FLAGS;
-	batman_packet->ttl = 2;
-	batman_packet->tq = TQ_MAX_VALUE;
-	batman_packet->tt_num_changes = 0;
-	batman_packet->ttvn = 0;
 
 	hard_iface->if_num = bat_priv->num_ifaces;
 	bat_priv->num_ifaces++;
···
 			hard_iface->net_dev->name);
 
 	/* begin scheduling originator messages on that interface */
-	schedule_own_packet(hard_iface);
+	schedule_bat_ogm(hard_iface);
 
 out:
 	return 0;
···
 	dev_hold(net_dev);
 
 	hard_iface = kmalloc(sizeof(*hard_iface), GFP_ATOMIC);
-	if (!hard_iface) {
-		pr_err("Can't add interface (%s): out of memory\n",
-		       net_dev->name);
+	if (!hard_iface)
 		goto release_dev;
-	}
 
 	ret = sysfs_add_hardif(&hard_iface->hardif_obj, net_dev);
 	if (ret)
···
 			goto hardif_put;
 
 		check_known_mac_addr(hard_iface->net_dev);
-		update_mac_addresses(hard_iface);
+		bat_ogm_update_mac(hard_iface);
 
 		bat_priv = netdev_priv(hard_iface->soft_iface);
 		primary_if = primary_if_get_selected(bat_priv);
···
 			   struct net_device *orig_dev)
 {
 	struct bat_priv *bat_priv;
-	struct batman_packet *batman_packet;
+	struct batman_ogm_packet *batman_ogm_packet;
 	struct hard_iface *hard_iface;
 	int ret;
 
···
 	if (hard_iface->if_status != IF_ACTIVE)
 		goto err_free;
 
-	batman_packet = (struct batman_packet *)skb->data;
+	batman_ogm_packet = (struct batman_ogm_packet *)skb->data;
 
-	if (batman_packet->version != COMPAT_VERSION) {
+	if (batman_ogm_packet->version != COMPAT_VERSION) {
 		bat_dbg(DBG_BATMAN, bat_priv,
 			"Drop packet: incompatible batman version (%i)\n",
-			batman_packet->version);
+			batman_ogm_packet->version);
 		goto err_free;
 	}
 
 	/* all receive handlers return whether they received or reused
 	 * the supplied skb. if not, we have to free the skb. */
 
-	switch (batman_packet->packet_type) {
+	switch (batman_ogm_packet->packet_type) {
 		/* batman originator packet */
-	case BAT_PACKET:
-		ret = recv_bat_packet(skb, hard_iface);
+	case BAT_OGM:
+		ret = recv_bat_ogm_packet(skb, hard_iface);
 		break;
 
 		/* batman icmp packet */

net/batman-adv/main.c

···
 	goto end;
 
 err:
-	pr_err("Unable to allocate memory for mesh information structures: "
-	       "out of mem ?\n");
 	mesh_free(soft_iface);
 	return -1;
 

net/batman-adv/main.h

···
 #define DRIVER_DEVICE "batman-adv"
 
 #ifndef SOURCE_VERSION
-#define SOURCE_VERSION "2011.3.0"
+#define SOURCE_VERSION "2011.4.0"
 #endif
 
 /* B.A.T.M.A.N. parameters */

net/batman-adv/originator.c

···
 	} else {
 		if (purge_orig_neighbors(bat_priv, orig_node,
 							&best_neigh_node)) {
-			update_routes(bat_priv, orig_node,
-				      best_neigh_node);
+			update_route(bat_priv, orig_node, best_neigh_node);
 		}
 	}
 
···
 
 	data_ptr = kmalloc(max_if_num * sizeof(unsigned long) * NUM_WORDS,
 			   GFP_ATOMIC);
-	if (!data_ptr) {
-		pr_err("Can't resize orig: out of memory\n");
+	if (!data_ptr)
 		return -1;
-	}
 
 	memcpy(data_ptr, orig_node->bcast_own,
 	       (max_if_num - 1) * sizeof(unsigned long) * NUM_WORDS);
···
 	orig_node->bcast_own = data_ptr;
 
 	data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC);
-	if (!data_ptr) {
-		pr_err("Can't resize orig: out of memory\n");
+	if (!data_ptr)
 		return -1;
-	}
 
 	memcpy(data_ptr, orig_node->bcast_own_sum,
 	       (max_if_num - 1) * sizeof(uint8_t));
···
 
 	chunk_size = sizeof(unsigned long) * NUM_WORDS;
 	data_ptr = kmalloc(max_if_num * chunk_size, GFP_ATOMIC);
-	if (!data_ptr) {
-		pr_err("Can't resize orig: out of memory\n");
+	if (!data_ptr)
 		return -1;
-	}
 
 	/* copy first part */
 	memcpy(data_ptr, orig_node->bcast_own, del_if_num * chunk_size);
···
 		goto free_own_sum;
 
 	data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC);
-	if (!data_ptr) {
-		pr_err("Can't resize orig: out of memory\n");
+	if (!data_ptr)
 		return -1;
-	}
 
 	memcpy(data_ptr, orig_node->bcast_own_sum,
 	       del_if_num * sizeof(uint8_t));

net/batman-adv/packet.h

···
 #define ETH_P_BATMAN  0x4305	/* unofficial/not registered Ethertype */
 
 enum bat_packettype {
-	BAT_PACKET       = 0x01,
-	BAT_ICMP         = 0x02,
-	BAT_UNICAST      = 0x03,
-	BAT_BCAST        = 0x04,
-	BAT_VIS          = 0x05,
+	BAT_OGM		 = 0x01,
+	BAT_ICMP	 = 0x02,
+	BAT_UNICAST	 = 0x03,
+	BAT_BCAST	 = 0x04,
+	BAT_VIS		 = 0x05,
 	BAT_UNICAST_FRAG = 0x06,
-	BAT_TT_QUERY     = 0x07,
-	BAT_ROAM_ADV     = 0x08
+	BAT_TT_QUERY	 = 0x07,
+	BAT_ROAM_ADV	 = 0x08
 };
 
 /* this file is included by batctl which needs these defines */
···
 	TT_CLIENT_PENDING = 1 << 10
 };
 
-struct batman_packet {
+struct batman_ogm_packet {
 	uint8_t  packet_type;
 	uint8_t  version;  /* batman version field */
 	uint8_t  ttl;
···
 	uint16_t tt_crc;
 } __packed;
 
-#define BAT_PACKET_LEN sizeof(struct batman_packet)
+#define BATMAN_OGM_LEN sizeof(struct batman_ogm_packet)
 
 struct icmp_packet {
 	uint8_t  packet_type;

net/batman-adv/routing.c

···
 #include "main.h"
 #include "routing.h"
 #include "send.h"
-#include "hash.h"
 #include "soft-interface.h"
 #include "hard-interface.h"
 #include "icmp_socket.h"
 #include "translation-table.h"
 #include "originator.h"
-#include "ring_buffer.h"
 #include "vis.h"
-#include "aggregation.h"
-#include "gateway_common.h"
-#include "gateway_client.h"
 #include "unicast.h"
+#include "bat_ogm.h"
 
 void slide_own_bcast_window(struct hard_iface *hard_iface)
 {
···
 	}
 }
 
-static void update_route(struct bat_priv *bat_priv,
-			 struct orig_node *orig_node,
-			 struct neigh_node *neigh_node)
+static void _update_route(struct bat_priv *bat_priv,
+			  struct orig_node *orig_node,
+			  struct neigh_node *neigh_node)
 {
 	struct neigh_node *curr_router;
 
···
 		neigh_node_free_ref(curr_router);
 }
 
-void update_routes(struct bat_priv *bat_priv, struct orig_node *orig_node,
-		   struct neigh_node *neigh_node)
+void update_route(struct bat_priv *bat_priv, struct orig_node *orig_node,
+		  struct neigh_node *neigh_node)
 {
 	struct neigh_node *router = NULL;
 
···
 	router = orig_node_get_router(orig_node);
 
 	if (router != neigh_node)
-		update_route(bat_priv, orig_node, neigh_node);
+		_update_route(bat_priv, orig_node, neigh_node);
 
 out:
 	if (router)
 		neigh_node_free_ref(router);
-}
-
-static int is_bidirectional_neigh(struct orig_node *orig_node,
-				struct orig_node *orig_neigh_node,
-				struct batman_packet *batman_packet,
-				struct hard_iface *if_incoming)
-{
-	struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
-	struct neigh_node *neigh_node = NULL, *tmp_neigh_node;
-	struct hlist_node *node;
-	uint8_t total_count;
-	uint8_t orig_eq_count, neigh_rq_count, tq_own;
-	int tq_asym_penalty, ret = 0;
-
-	/* find corresponding one hop neighbor */
-	rcu_read_lock();
-	hlist_for_each_entry_rcu(tmp_neigh_node, node,
-				 &orig_neigh_node->neigh_list, list) {
-
-		if (!compare_eth(tmp_neigh_node->addr, orig_neigh_node->orig))
-			continue;
-
-		if (tmp_neigh_node->if_incoming != if_incoming)
-			continue;
-
-		if (!atomic_inc_not_zero(&tmp_neigh_node->refcount))
-			continue;
-
-		neigh_node = tmp_neigh_node;
-		break;
-	}
-	rcu_read_unlock();
-
-	if (!neigh_node)
-		neigh_node = create_neighbor(orig_neigh_node,
-					     orig_neigh_node,
-					     orig_neigh_node->orig,
-					     if_incoming);
-
-	if (!neigh_node)
-		goto out;
-
-	/* if orig_node is direct neighbor update neigh_node last_valid */
-	if (orig_node == orig_neigh_node)
-		neigh_node->last_valid = jiffies;
-
-	orig_node->last_valid = jiffies;
-
-	/* find packet count of corresponding one hop neighbor */
-	spin_lock_bh(&orig_node->ogm_cnt_lock);
-	orig_eq_count = orig_neigh_node->bcast_own_sum[if_incoming->if_num];
-	neigh_rq_count = neigh_node->real_packet_count;
-	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 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 */
-	if ((total_count < TQ_LOCAL_BIDRECT_SEND_MINIMUM) ||
-	    (neigh_rq_count < TQ_LOCAL_BIDRECT_RECV_MINIMUM))
-		tq_own = 0;
-	else
-		/* neigh_node->real_packet_count is never zero as we
-		 * only purge old information when getting new
-		 * information */
-		tq_own = (TQ_MAX_VALUE * total_count) /	neigh_rq_count;
-
-	/*
-	 * 1 - ((1-x) ** 3), normalized to TQ_MAX_VALUE this does
-	 * affect the nearly-symmetric links only a little, but
-	 * punishes asymmetric links more.  This will give a value
-	 * between 0 and TQ_MAX_VALUE
-	 */
-	tq_asym_penalty = TQ_MAX_VALUE - (TQ_MAX_VALUE *
-				(TQ_LOCAL_WINDOW_SIZE - neigh_rq_count) *
-				(TQ_LOCAL_WINDOW_SIZE - neigh_rq_count) *
-				(TQ_LOCAL_WINDOW_SIZE - neigh_rq_count)) /
-					(TQ_LOCAL_WINDOW_SIZE *
-					 TQ_LOCAL_WINDOW_SIZE *
-					 TQ_LOCAL_WINDOW_SIZE);
-
-	batman_packet->tq = ((batman_packet->tq * tq_own * tq_asym_penalty) /
-						(TQ_MAX_VALUE * TQ_MAX_VALUE));
-
-	bat_dbg(DBG_BATMAN, bat_priv,
-		"bidirectional: "
-		"orig = %-15pM neigh = %-15pM => own_bcast = %2i, "
-		"real recv = %2i, local tq: %3i, asym_penalty: %3i, "
-		"total tq: %3i\n",
-		orig_node->orig, orig_neigh_node->orig, total_count,
-		neigh_rq_count, tq_own,	tq_asym_penalty, batman_packet->tq);
-
-	/* if link has the minimum required transmission quality
-	 * consider it bidirectional */
-	if (batman_packet->tq >= TQ_TOTAL_BIDRECT_LIMIT)
-		ret = 1;
-
-out:
-	if (neigh_node)
-		neigh_node_free_ref(neigh_node);
-	return ret;
 }
 
 /* caller must hold the neigh_list_lock */
···
 	return;
 }
 
-static void bonding_candidate_add(struct orig_node *orig_node,
-				  struct neigh_node *neigh_node)
+void bonding_candidate_add(struct orig_node *orig_node,
+			   struct neigh_node *neigh_node)
 {
 	struct hlist_node *node;
 	struct neigh_node *tmp_neigh_node, *router = NULL;
···
 }
 
 /* copy primary address for bonding */
-static void bonding_save_primary(const struct orig_node *orig_node,
-				 struct orig_node *orig_neigh_node,
-				 const struct batman_packet *batman_packet)
+void bonding_save_primary(const struct orig_node *orig_node,
+			  struct orig_node *orig_neigh_node,
+			  const struct batman_ogm_packet *batman_ogm_packet)
 {
-	if (!(batman_packet->flags & PRIMARIES_FIRST_HOP))
+	if (!(batman_ogm_packet->flags & PRIMARIES_FIRST_HOP))
 		return;
 
 	memcpy(orig_neigh_node->primary_addr, orig_node->orig, ETH_ALEN);
-}
-
-static void update_orig(struct bat_priv *bat_priv, struct orig_node *orig_node,
-			const struct ethhdr *ethhdr,
-			const struct batman_packet *batman_packet,
-			struct hard_iface *if_incoming,
-			const unsigned char *tt_buff, int is_duplicate)
-{
-	struct neigh_node *neigh_node = NULL, *tmp_neigh_node = NULL;
-	struct neigh_node *router = NULL;
-	struct orig_node *orig_node_tmp;
-	struct hlist_node *node;
-	uint8_t bcast_own_sum_orig, bcast_own_sum_neigh;
-
-	bat_dbg(DBG_BATMAN, bat_priv, "update_originator(): "
-		"Searching and updating originator entry of received packet\n");
-
-	rcu_read_lock();
-	hlist_for_each_entry_rcu(tmp_neigh_node, node,
-				 &orig_node->neigh_list, list) {
-		if (compare_eth(tmp_neigh_node->addr, ethhdr->h_source) &&
-		    (tmp_neigh_node->if_incoming == if_incoming) &&
-		     atomic_inc_not_zero(&tmp_neigh_node->refcount)) {
-			if (neigh_node)
-				neigh_node_free_ref(neigh_node);
-			neigh_node = tmp_neigh_node;
-			continue;
-		}
-
-		if (is_duplicate)
-			continue;
-
-		spin_lock_bh(&tmp_neigh_node->tq_lock);
-		ring_buffer_set(tmp_neigh_node->tq_recv,
-				&tmp_neigh_node->tq_index, 0);
-		tmp_neigh_node->tq_avg =
-			ring_buffer_avg(tmp_neigh_node->tq_recv);
-		spin_unlock_bh(&tmp_neigh_node->tq_lock);
-	}
-
-	if (!neigh_node) {
-		struct orig_node *orig_tmp;
-
-		orig_tmp = get_orig_node(bat_priv, ethhdr->h_source);
-		if (!orig_tmp)
-			goto unlock;
-
-		neigh_node = create_neighbor(orig_node, orig_tmp,
-					     ethhdr->h_source, if_incoming);
-
-		orig_node_free_ref(orig_tmp);
-		if (!neigh_node)
-			goto unlock;
-	} else
-		bat_dbg(DBG_BATMAN, bat_priv,
-			"Updating existing last-hop neighbor of originator\n");
-
-	rcu_read_unlock();
-
-	orig_node->flags = batman_packet->flags;
-	neigh_node->last_valid = jiffies;
-
-	spin_lock_bh(&neigh_node->tq_lock);
-	ring_buffer_set(neigh_node->tq_recv,
-			&neigh_node->tq_index,
-			batman_packet->tq);
-	neigh_node->tq_avg = ring_buffer_avg(neigh_node->tq_recv);
-	spin_unlock_bh(&neigh_node->tq_lock);
-
-	if (!is_duplicate) {
-		orig_node->last_ttl = batman_packet->ttl;
-		neigh_node->last_ttl = batman_packet->ttl;
-	}
-
-	bonding_candidate_add(orig_node, neigh_node);
-
-	/* if this neighbor already is our next hop there is nothing
-	 * to change */
-	router = orig_node_get_router(orig_node);
-	if (router == neigh_node)
-		goto update_tt;
-
-	/* if this neighbor does not offer a better TQ we won't consider it */
-	if (router && (router->tq_avg > neigh_node->tq_avg))
-		goto update_tt;
-
-	/* if the TQ is the same and the link not more symmetric we
-	 * won't consider it either */
-	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];
-		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];
-		spin_unlock_bh(&orig_node_tmp->ogm_cnt_lock);
-
-		if (bcast_own_sum_orig >= bcast_own_sum_neigh)
-			goto update_tt;
-	}
-
-	update_routes(bat_priv, orig_node, neigh_node);
-
-update_tt:
-	/* I have to check for transtable changes only if the OGM has been
-	 * sent through a primary interface */
-	if (((batman_packet->orig != ethhdr->h_source) &&
-				(batman_packet->ttl > 2)) ||
-				(batman_packet->flags & PRIMARIES_FIRST_HOP))
-		tt_update_orig(bat_priv, orig_node, tt_buff,
-			       batman_packet->tt_num_changes,
-			       batman_packet->ttvn, batman_packet->tt_crc);
-
-	if (orig_node->gw_flags != batman_packet->gw_flags)
-		gw_node_update(bat_priv, orig_node, batman_packet->gw_flags);
-
-	orig_node->gw_flags = batman_packet->gw_flags;
-
-	/* restart gateway selection if fast or late switching was enabled */
-	if ((orig_node->gw_flags) &&
-	    (atomic_read(&bat_priv->gw_mode) == GW_MODE_CLIENT) &&
-	    (atomic_read(&bat_priv->gw_sel_class) > 2))
-		gw_check_election(bat_priv, orig_node);
-
-	goto out;
-
-unlock:
-	rcu_read_unlock();
-out:
-	if (neigh_node)
-		neigh_node_free_ref(neigh_node);
-	if (router)
-		neigh_node_free_ref(router);
 }
 
 /* checks whether the host restarted and is in the protection time.
···
  *  0 if the packet is to be accepted
  *  1 if the packet is to be ignored.
  */
-static int window_protected(struct bat_priv *bat_priv,
-			    int32_t seq_num_diff,
-			    unsigned long *last_reset)
+int window_protected(struct bat_priv *bat_priv, int32_t seq_num_diff,
+		     unsigned long *last_reset)
 {
 	if ((seq_num_diff <= -TQ_LOCAL_WINDOW_SIZE)
 		|| (seq_num_diff >= EXPECTED_SEQNO_RANGE)) {
···
 	return 0;
 }
 
-/* processes a batman packet for all interfaces, adjusts the sequence number and
- * finds out whether it is a duplicate.
- * returns:
- *   1 the packet is a duplicate
- *   0 the packet has not yet been received
- *  -1 the packet is old and has been received while the seqno window
- *     was protected. Caller should drop it.
- */
-static int count_real_packets(const struct ethhdr *ethhdr,
-			       const struct batman_packet *batman_packet,
-			       const struct hard_iface *if_incoming)
-{
-	struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
-	struct orig_node *orig_node;
-	struct neigh_node *tmp_neigh_node;
-	struct hlist_node *node;
-	int is_duplicate = 0;
-	int32_t seq_diff;
-	int need_update = 0;
-	int set_mark, ret = -1;
-
-	orig_node = get_orig_node(bat_priv, batman_packet->orig);
-	if (!orig_node)
-		return 0;
-
-	spin_lock_bh(&orig_node->ogm_cnt_lock);
-	seq_diff = batman_packet->seqno - orig_node->last_real_seqno;
-
-	/* signalize caller that the packet is to be dropped. */
-	if (window_protected(bat_priv, seq_diff,
-			     &orig_node->batman_seqno_reset))
-		goto out;
-
-	rcu_read_lock();
-	hlist_for_each_entry_rcu(tmp_neigh_node, node,
-				 &orig_node->neigh_list, list) {
-
-		is_duplicate |= get_bit_status(tmp_neigh_node->real_bits,
-					       orig_node->last_real_seqno,
-					       batman_packet->seqno);
-
-		if (compare_eth(tmp_neigh_node->addr, ethhdr->h_source) &&
-		    (tmp_neigh_node->if_incoming == if_incoming))
-			set_mark = 1;
-		else
-			set_mark = 0;
-
-		/* if the window moved, set the update flag. */
-		need_update |= bit_get_packet(bat_priv,
-					      tmp_neigh_node->real_bits,
-					      seq_diff, set_mark);
-
-		tmp_neigh_node->real_packet_count =
-			bit_packet_count(tmp_neigh_node->real_bits);
-	}
-	rcu_read_unlock();
-
-	if (need_update) {
-		bat_dbg(DBG_BATMAN, bat_priv,
-			"updating last_seqno: old %d, new %d\n",
-			orig_node->last_real_seqno, batman_packet->seqno);
-		orig_node->last_real_seqno = batman_packet->seqno;
-	}
-
-	ret = is_duplicate;
-
-out:
-	spin_unlock_bh(&orig_node->ogm_cnt_lock);
-	orig_node_free_ref(orig_node);
-	return ret;
-}
-
-void receive_bat_packet(const struct ethhdr *ethhdr,
-			struct batman_packet *batman_packet,
-			const unsigned char *tt_buff,
-			struct hard_iface *if_incoming)
-{
-	struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
-	struct hard_iface *hard_iface;
-	struct orig_node *orig_neigh_node, *orig_node;
-	struct neigh_node *router = NULL, *router_router = NULL;
-	struct neigh_node *orig_neigh_router = NULL;
-	int has_directlink_flag;
-	int is_my_addr = 0, is_my_orig = 0, is_my_oldorig = 0;
-	int is_broadcast = 0, is_bidirectional, is_single_hop_neigh;
-	int is_duplicate;
-	uint32_t if_incoming_seqno;
-
-	/* Silently drop when the batman packet is actually not a
-	 * correct packet.
-	 *
-	 * This might happen if a packet is padded (e.g. Ethernet has a
-	 * minimum frame length of 64 byte) and the aggregation interprets
-	 * it as an additional length.
-	 *
-	 * TODO: A more sane solution would be to have a bit in the
-	 * batman_packet to detect whether the packet is the last
-	 * packet in an aggregation.  Here we expect that the padding
-	 * is always zero (or not 0x01)
-	 */
-	if (batman_packet->packet_type != BAT_PACKET)
-		return;
-
-	/* could be changed by schedule_own_packet() */
-	if_incoming_seqno = atomic_read(&if_incoming->seqno);
-
-	has_directlink_flag = (batman_packet->flags & DIRECTLINK ? 1 : 0);
-
-	is_single_hop_neigh = (compare_eth(ethhdr->h_source,
-					   batman_packet->orig) ? 1 : 0);
-
-	bat_dbg(DBG_BATMAN, bat_priv,
-		"Received BATMAN packet via NB: %pM, IF: %s [%pM] "
-		"(from OG: %pM, via prev OG: %pM, seqno %d, ttvn %u, "
-		"crc %u, changes %u, td %d, TTL %d, V %d, IDF %d)\n",
-		ethhdr->h_source, if_incoming->net_dev->name,
-		if_incoming->net_dev->dev_addr, batman_packet->orig,
-		batman_packet->prev_sender, batman_packet->seqno,
-		batman_packet->ttvn, batman_packet->tt_crc,
-		batman_packet->tt_num_changes, batman_packet->tq,
-		batman_packet->ttl, batman_packet->version,
-		has_directlink_flag);
-
-	rcu_read_lock();
-	list_for_each_entry_rcu(hard_iface, &hardif_list, list) {
-		if (hard_iface->if_status != IF_ACTIVE)
-			continue;
-
-		if (hard_iface->soft_iface != if_incoming->soft_iface)
-			continue;
-
-		if (compare_eth(ethhdr->h_source,
-				hard_iface->net_dev->dev_addr))
-			is_my_addr = 1;
-
-		if (compare_eth(batman_packet->orig,
-				hard_iface->net_dev->dev_addr))
-			is_my_orig = 1;
-
-		if (compare_eth(batman_packet->prev_sender,
-				hard_iface->net_dev->dev_addr))
-			is_my_oldorig = 1;
-
-		if (is_broadcast_ether_addr(ethhdr->h_source))
-			is_broadcast = 1;
-	}
-	rcu_read_unlock();
-
-	if (batman_packet->version != COMPAT_VERSION) {
-		bat_dbg(DBG_BATMAN, bat_priv,
-			"Drop packet: incompatible batman version (%i)\n",
-			batman_packet->version);
-		return;
-	}
-
-	if (is_my_addr) {
-		bat_dbg(DBG_BATMAN, bat_priv,
-			"Drop packet: received my own broadcast (sender: %pM"
-			")\n",
-			ethhdr->h_source);
-		return;
-	}
-
-	if (is_broadcast) {
-		bat_dbg(DBG_BATMAN, bat_priv, "Drop packet: "
-		"ignoring all packets with broadcast source addr (sender: %pM"
-		")\n", ethhdr->h_source);
-		return;
-	}
-
-	if (is_my_orig) {
-		unsigned long *word;
-		int offset;
-
-		orig_neigh_node = get_orig_node(bat_priv, ethhdr->h_source);
-		if (!orig_neigh_node)
-			return;
-
-		/* neighbor has to indicate direct link and it has to
-		 * come via the corresponding interface */
-		/* save packet seqno for bidirectional check */
-		if (has_directlink_flag &&
-		    compare_eth(if_incoming->net_dev->dev_addr,
-				batman_packet->orig)) {
-			offset = if_incoming->if_num * NUM_WORDS;
-
-			spin_lock_bh(&orig_neigh_node->ogm_cnt_lock);
-			word = &(orig_neigh_node->bcast_own[offset]);
-			bit_mark(word,
-				 if_incoming_seqno - batman_packet->seqno - 2);
-			orig_neigh_node->bcast_own_sum[if_incoming->if_num] =
-				bit_packet_count(word);
-			spin_unlock_bh(&orig_neigh_node->ogm_cnt_lock);
-		}
-
-		bat_dbg(DBG_BATMAN, bat_priv, "Drop packet: "
-			"originator packet from myself (via neighbor)\n");
-		orig_node_free_ref(orig_neigh_node);
-		return;
-	}
-
-	if (is_my_oldorig) {
-		bat_dbg(DBG_BATMAN, bat_priv,
-			"Drop packet: ignoring all rebroadcast echos (sender: "
-			"%pM)\n", ethhdr->h_source);
-		return;
-	}
-
-	orig_node = get_orig_node(bat_priv, batman_packet->orig);
-	if (!orig_node)
-		return;
-
-	is_duplicate = count_real_packets(ethhdr, batman_packet, if_incoming);
-
-	if (is_duplicate == -1) {
-		bat_dbg(DBG_BATMAN, bat_priv,
-			"Drop packet: packet within seqno protection time "
-			"(sender: %pM)\n", ethhdr->h_source);
-		goto out;
-	}
-
-	if (batman_packet->tq == 0) {
-		bat_dbg(DBG_BATMAN, bat_priv,
-			"Drop packet: originator packet with tq equal 0\n");
-		goto out;
-	}
-
-	router = orig_node_get_router(orig_node);
-	if (router)
-		router_router = orig_node_get_router(router->orig_node);
-
-	/* avoid temporary routing loops */
-	if (router && router_router &&
-	    (compare_eth(router->addr, batman_packet->prev_sender)) &&
-	    !(compare_eth(batman_packet->orig, batman_packet->prev_sender)) &&
-	    (compare_eth(router->addr, router_router->addr))) {
-		bat_dbg(DBG_BATMAN, bat_priv,
-			"Drop packet: ignoring all rebroadcast packets that "
-			"may make me loop (sender: %pM)\n", ethhdr->h_source);
-		goto out;
-	}
-
-	/* if sender is a direct neighbor the sender mac equals
-	 * originator mac */
-	orig_neigh_node = (is_single_hop_neigh ?
-			   orig_node :
-			   get_orig_node(bat_priv, ethhdr->h_source));
-	if (!orig_neigh_node)
-		goto out;
-
-	orig_neigh_router = orig_node_get_router(orig_neigh_node);
-
-	/* drop packet if sender is not a direct neighbor and if we
-	 * don't route towards it */
-	if (!is_single_hop_neigh && (!orig_neigh_router)) {
-		bat_dbg(DBG_BATMAN, bat_priv,
-			"Drop packet: OGM via unknown neighbor!\n");
-		goto out_neigh;
-	}
-
-	is_bidirectional = is_bidirectional_neigh(orig_node, orig_neigh_node,
-						batman_packet, if_incoming);
-
-	bonding_save_primary(orig_node, orig_neigh_node, batman_packet);
-
-	/* update ranking if it is not a duplicate or has the same
-	 * seqno and similar ttl as the non-duplicate */
-	if (is_bidirectional &&
-	    (!is_duplicate ||
-	     ((orig_node->last_real_seqno == batman_packet->seqno) &&
-	      (orig_node->last_ttl - 3 <= batman_packet->ttl))))
-		update_orig(bat_priv, orig_node, ethhdr, batman_packet,
-			    if_incoming, tt_buff, is_duplicate);
-
-	/* is single hop (direct) neighbor */
-	if (is_single_hop_neigh) {
-
-		/* mark direct link on incoming interface */
-		schedule_forward_packet(orig_node, ethhdr, batman_packet,
-					1, if_incoming);
-
-		bat_dbg(DBG_BATMAN, bat_priv, "Forwarding packet: "
-			"rebroadcast neighbor packet with direct link flag\n");
-		goto out_neigh;
-	}
-
-	/* multihop originator */
-	if (!is_bidirectional) {
-		bat_dbg(DBG_BATMAN, bat_priv,
-			"Drop packet: not received via bidirectional link\n");
-		goto out_neigh;
-	}
-
-	if (is_duplicate) {
-		bat_dbg(DBG_BATMAN, bat_priv,
-			"Drop packet: duplicate packet received\n");
-		goto out_neigh;
-	}
-
-	bat_dbg(DBG_BATMAN, bat_priv,
-		"Forwarding packet: rebroadcast originator packet\n");
-	schedule_forward_packet(orig_node, ethhdr, batman_packet,
-				0, if_incoming);
-
-out_neigh:
-	if ((orig_neigh_node) && (!is_single_hop_neigh))
-		orig_node_free_ref(orig_neigh_node);
-out:
-	if (router)
-		neigh_node_free_ref(router);
-	if (router_router)
-		neigh_node_free_ref(router_router);
-	if (orig_neigh_router)
-		neigh_node_free_ref(orig_neigh_router);
-
-	orig_node_free_ref(orig_node);
-}
-
-int recv_bat_packet(struct sk_buff *skb, struct hard_iface *hard_iface)
+int recv_bat_ogm_packet(struct sk_buff *skb, struct hard_iface *hard_iface)
 {
 	struct ethhdr *ethhdr;
 
 	/* drop packet if it has not necessary minimum size */
-	if (unlikely(!pskb_may_pull(skb, sizeof(struct batman_packet))))
+	if (unlikely(!pskb_may_pull(skb, BATMAN_OGM_LEN)))
 		return NET_RX_DROP;
 
 	ethhdr = (struct ethhdr *)skb_mac_header(skb);
···
 
 	ethhdr = (struct ethhdr *)skb_mac_header(skb);
 
-	receive_aggr_bat_packet(ethhdr,
-				skb->data,
-				skb_headlen(skb),
-				hard_iface);
+	bat_ogm_receive(ethhdr, skb->data, skb_headlen(skb), hard_iface);
 
 	kfree_skb(skb);
 	return NET_RX_SUCCESS;

net/batman-adv/routing.h

···
 #define _NET_BATMAN_ADV_ROUTING_H_
 
 void slide_own_bcast_window(struct hard_iface *hard_iface);
-void receive_bat_packet(const struct ethhdr *ethhdr,
-			struct batman_packet *batman_packet,
-			const unsigned char *tt_buff,
-			struct hard_iface *if_incoming);
-void update_routes(struct bat_priv *bat_priv, struct orig_node *orig_node,
-		   struct neigh_node *neigh_node);
+void update_route(struct bat_priv *bat_priv, struct orig_node *orig_node,
+		  struct neigh_node *neigh_node);
 int route_unicast_packet(struct sk_buff *skb, struct hard_iface *recv_if);
 int recv_icmp_packet(struct sk_buff *skb, struct hard_iface *recv_if);
 int recv_unicast_packet(struct sk_buff *skb, struct hard_iface *recv_if);
 int recv_ucast_frag_packet(struct sk_buff *skb, struct hard_iface *recv_if);
 int recv_bcast_packet(struct sk_buff *skb, struct hard_iface *recv_if);
 int recv_vis_packet(struct sk_buff *skb, struct hard_iface *recv_if);
-int recv_bat_packet(struct sk_buff *skb, struct hard_iface *recv_if);
+int recv_bat_ogm_packet(struct sk_buff *skb, struct hard_iface *recv_if);
 int recv_tt_query(struct sk_buff *skb, struct hard_iface *recv_if);
 int recv_roam_adv(struct sk_buff *skb, struct hard_iface *recv_if);
 struct neigh_node *find_router(struct bat_priv *bat_priv,
···
 			       const struct hard_iface *recv_if);
 void bonding_candidate_del(struct orig_node *orig_node,
 			   struct neigh_node *neigh_node);
+void bonding_candidate_add(struct orig_node *orig_node,
+			   struct neigh_node *neigh_node);
+void bonding_save_primary(const struct orig_node *orig_node,
+			  struct orig_node *orig_neigh_node,
+			  const struct batman_ogm_packet *batman_ogm_packet);
+int window_protected(struct bat_priv *bat_priv, int32_t seq_num_diff,
+		     unsigned long *last_reset);
 
 #endif /* _NET_BATMAN_ADV_ROUTING_H_ */

net/batman-adv/send.c

···
 #include "soft-interface.h"
 #include "hard-interface.h"
 #include "vis.h"
-#include "aggregation.h"
 #include "gateway_common.h"
 #include "originator.h"
+#include "bat_ogm.h"
 
 static void send_outstanding_bcast_packet(struct work_struct *work);
-
-/* apply hop penalty for a normal link */
-static uint8_t hop_penalty(uint8_t tq, const struct bat_priv *bat_priv)
-{
-	int hop_penalty = atomic_read(&bat_priv->hop_penalty);
-	return (tq * (TQ_MAX_VALUE - hop_penalty)) / (TQ_MAX_VALUE);
-}
-
-/* when do we schedule our own packet to be sent */
-static unsigned long own_send_time(const struct bat_priv *bat_priv)
-{
-	return jiffies + msecs_to_jiffies(
-		   atomic_read(&bat_priv->orig_interval) -
-		   JITTER + (random32() % 2*JITTER));
-}
-
-/* when do we schedule a forwarded packet to be sent */
-static unsigned long forward_send_time(void)
-{
-	return jiffies + msecs_to_jiffies(random32() % (JITTER/2));
-}
 
 /* send out an already prepared packet to the given address via the
  * specified batman interface */
···
 	return NET_XMIT_DROP;
 }
 
-/* Send a packet to a given interface */
-static void send_packet_to_if(struct forw_packet *forw_packet,
-			      struct hard_iface *hard_iface)
-{
-	struct bat_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
-	char *fwd_str;
-	uint8_t packet_num;
-	int16_t buff_pos;
-	struct batman_packet *batman_packet;
-	struct sk_buff *skb;
-
-	if (hard_iface->if_status != IF_ACTIVE)
-		return;
-
-	packet_num = 0;
-	buff_pos = 0;
-	batman_packet = (struct batman_packet *)forw_packet->skb->data;
-
-	/* adjust all flags and log packets */
-	while (aggregated_packet(buff_pos,
-				 forw_packet->packet_len,
-				 batman_packet->tt_num_changes)) {
-
-		/* 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))
-			batman_packet->flags |= DIRECTLINK;
-		else
-			batman_packet->flags &= ~DIRECTLINK;
-
-		fwd_str = (packet_num > 0 ? "Forwarding" : (forw_packet->own ?
-							    "Sending own" :
-							    "Forwarding"));
-		bat_dbg(DBG_BATMAN, bat_priv,
-			"%s %spacket (originator %pM, seqno %d, TQ %d, TTL %d,"
-			" IDF %s, ttvn %d) on interface %s [%pM]\n",
-			fwd_str, (packet_num > 0 ? "aggregated " : ""),
-			batman_packet->orig, ntohl(batman_packet->seqno),
-			batman_packet->tq, batman_packet->ttl,
-			(batman_packet->flags & DIRECTLINK ?
-			 "on" : "off"),
-			batman_packet->ttvn, hard_iface->net_dev->name,
-			hard_iface->net_dev->dev_addr);
-
-		buff_pos += sizeof(*batman_packet) +
-			tt_len(batman_packet->tt_num_changes);
-		packet_num++;
-		batman_packet = (struct batman_packet *)
-			(forw_packet->skb->data + buff_pos);
-	}
-
-	/* create clone because function is called more than once */
-	skb = skb_clone(forw_packet->skb, GFP_ATOMIC);
-	if (skb)
-		send_skb_packet(skb, hard_iface, broadcast_addr);
-}
-
-/* send a batman packet */
-static void send_packet(struct forw_packet *forw_packet)
-{
-	struct hard_iface *hard_iface;
-	struct net_device *soft_iface;
-	struct bat_priv *bat_priv;
-	struct hard_iface *primary_if = NULL;
-	struct batman_packet *batman_packet =
-		(struct batman_packet *)(forw_packet->skb->data);
-	int directlink = (batman_packet->flags & DIRECTLINK ? 1 : 0);
-
-	if (!forw_packet->if_incoming) {
-		pr_err("Error - can't forward packet: incoming iface not "
-		       "specified\n");
-		goto out;
-	}
-
-	soft_iface = forw_packet->if_incoming->soft_iface;
-	bat_priv = netdev_priv(soft_iface);
-
-	if (forw_packet->if_incoming->if_status != IF_ACTIVE)
-		goto out;
-
-	primary_if = primary_if_get_selected(bat_priv);
-	if (!primary_if)
-		goto out;
-
-	/* multihomed peer assumed */
-	/* non-primary OGMs are only broadcasted on their interface */
-	if ((directlink && (batman_packet->ttl == 1)) ||
-	    (forw_packet->own && (forw_packet->if_incoming != primary_if))) {
-
-		/* FIXME: what about aggregated packets ? */
-		bat_dbg(DBG_BATMAN, bat_priv,
-			"%s packet (originator %pM, seqno %d, TTL %d) "
-			"on interface %s [%pM]\n",
-			(forw_packet->own ? "Sending own" : "Forwarding"),
-			batman_packet->orig, ntohl(batman_packet->seqno),
-			batman_packet->ttl,
-			forw_packet->if_incoming->net_dev->name,
-			forw_packet->if_incoming->net_dev->dev_addr);
-
-		/* skb is only used once and than forw_packet is free'd */
-		send_skb_packet(forw_packet->skb, forw_packet->if_incoming,
-				broadcast_addr);
-		forw_packet->skb = NULL;
-
-		goto out;
-	}
-
-	/* broadcast on every interface */
-	rcu_read_lock();
-	list_for_each_entry_rcu(hard_iface, &hardif_list, list) {
-		if (hard_iface->soft_iface != soft_iface)
-			continue;
-
-		send_packet_to_if(forw_packet, hard_iface);
-	}
-	rcu_read_unlock();
-
-out:
-	if (primary_if)
-		hardif_free_ref(primary_if);
-}
-
 static void realloc_packet_buffer(struct hard_iface *hard_iface,
-				int new_len)
+				  int new_len)
 {
 	unsigned char *new_buff;
-	struct batman_packet *batman_packet;
 
 	new_buff = kmalloc(new_len, GFP_ATOMIC);
 
 	/* keep old buffer if kmalloc should fail */
 	if (new_buff) {
 		memcpy(new_buff, hard_iface->packet_buff,
-		       sizeof(*batman_packet));
+		       BATMAN_OGM_LEN);
 
 		kfree(hard_iface->packet_buff);
 		hard_iface->packet_buff = new_buff;
···
 }
 
 /* when calling this function (hard_iface == primary_if) has to be true */
-static void prepare_packet_buffer(struct bat_priv *bat_priv,
+static int prepare_packet_buffer(struct bat_priv *bat_priv,
 				  struct hard_iface *hard_iface)
 {
 	int new_len;
-	struct batman_packet *batman_packet;
 
-	new_len = BAT_PACKET_LEN +
+	new_len = BATMAN_OGM_LEN +
 		  tt_len((uint8_t)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 */
 	if (new_len > hard_iface->soft_iface->mtu)
-		new_len = BAT_PACKET_LEN;
+		new_len = BATMAN_OGM_LEN;
 
 	realloc_packet_buffer(hard_iface, new_len);
-	batman_packet = (struct batman_packet *)hard_iface->packet_buff;
 
 	atomic_set(&bat_priv->tt_crc, tt_local_crc(bat_priv));
 
 	/* reset the sending counter */
 	atomic_set(&bat_priv->tt_ogm_append_cnt, TT_OGM_APPEND_MAX);
 
-	batman_packet->tt_num_changes = tt_changes_fill_buffer(bat_priv,
-				hard_iface->packet_buff + BAT_PACKET_LEN,
-				hard_iface->packet_len - BAT_PACKET_LEN);
-
+	return tt_changes_fill_buffer(bat_priv,
+				      hard_iface->packet_buff + BATMAN_OGM_LEN,
+				      hard_iface->packet_len - BATMAN_OGM_LEN);
 }
 
-static void reset_packet_buffer(struct bat_priv *bat_priv,
-	struct hard_iface *hard_iface)
+static int reset_packet_buffer(struct bat_priv *bat_priv,
+				struct hard_iface *hard_iface)
 {
-	struct batman_packet *batman_packet;
-
-	realloc_packet_buffer(hard_iface, BAT_PACKET_LEN);
-
-	batman_packet = (struct batman_packet *)hard_iface->packet_buff;
-	batman_packet->tt_num_changes = 0;
+	realloc_packet_buffer(hard_iface, BATMAN_OGM_LEN);
+	return 0;
 }
 
-void schedule_own_packet(struct hard_iface *hard_iface)
+void schedule_bat_ogm(struct hard_iface *hard_iface)
 {
 	struct bat_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
 	struct hard_iface *primary_if;
-	unsigned long send_time;
-	struct batman_packet *batman_packet;
-	int vis_server;
+	int tt_num_changes = -1;
 
 	if ((hard_iface->if_status == IF_NOT_IN_USE) ||
 	    (hard_iface->if_status == IF_TO_BE_REMOVED))
 		return;
-
-	vis_server = atomic_read(&bat_priv->vis_mode);
-	primary_if = primary_if_get_selected(bat_priv);
 
 	/**
 	 * the interface gets activated here to avoid race conditions between
···
 	if (hard_iface->if_status == IF_TO_BE_ACTIVATED)
 		hard_iface->if_status = IF_ACTIVE;
 
+	primary_if = primary_if_get_selected(bat_priv);
+
 	if (hard_iface == primary_if) {
 		/* if at least one change happened */
 		if (atomic_read(&bat_priv->tt_local_changes) > 0) {
 			tt_commit_changes(bat_priv);
-			prepare_packet_buffer(bat_priv, hard_iface);
+			tt_num_changes = prepare_packet_buffer(bat_priv,
+							       hard_iface);
 		}
 
 		/* if the changes have been sent often enough */
 		if (!atomic_dec_not_zero(&bat_priv->tt_ogm_append_cnt))
-			reset_packet_buffer(bat_priv, hard_iface);
+			tt_num_changes = reset_packet_buffer(bat_priv,
+							     hard_iface);
 	}
-
-	/**
-	 * NOTE: packet_buff might just have been re-allocated in
-	 * prepare_packet_buffer() or in reset_packet_buffer()
-	 */
-	batman_packet = (struct batman_packet *)hard_iface->packet_buff;
-
-	/* change sequence number to network order */
-	batman_packet->seqno =
-		htonl((uint32_t)atomic_read(&hard_iface->seqno));
-
-	batman_packet->ttvn = atomic_read(&bat_priv->ttvn);
-	batman_packet->tt_crc = htons((uint16_t)atomic_read(&bat_priv->tt_crc));
-
-	if (vis_server == VIS_TYPE_SERVER_SYNC)
-		batman_packet->flags |= VIS_SERVER;
-	else
-		batman_packet->flags &= ~VIS_SERVER;
-
-	if ((hard_iface == primary_if) &&
-	    (atomic_read(&bat_priv->gw_mode) == GW_MODE_SERVER))
-		batman_packet->gw_flags =
-				(uint8_t)atomic_read(&bat_priv->gw_bandwidth);
-	else
-		batman_packet->gw_flags = NO_FLAGS;
-
-	atomic_inc(&hard_iface->seqno);
-
-	slide_own_bcast_window(hard_iface);
-	send_time = own_send_time(bat_priv);
-	add_bat_packet_to_list(bat_priv,
-			       hard_iface->packet_buff,
-			       hard_iface->packet_len,
-			       hard_iface, 1, send_time);
 
 	if (primary_if)
 		hardif_free_ref(primary_if);
-}
 
-void schedule_forward_packet(struct orig_node *orig_node,
-			     const struct ethhdr *ethhdr,
-			     struct batman_packet *batman_packet,
-			     int directlink,
-			     struct hard_iface *if_incoming)
-{
-	struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
-	struct neigh_node *router;
-	uint8_t in_tq, in_ttl, tq_avg = 0;
-	unsigned long send_time;
-	uint8_t tt_num_changes;
-
-	if (batman_packet->ttl <= 1) {
-		bat_dbg(DBG_BATMAN, bat_priv, "ttl exceeded\n");
-		return;
-	}
-
-	router = orig_node_get_router(orig_node);
-
-	in_tq = batman_packet->tq;
-	in_ttl = batman_packet->ttl;
-	tt_num_changes = batman_packet->tt_num_changes;
-
-	batman_packet->ttl--;
-	memcpy(batman_packet->prev_sender, ethhdr->h_source, ETH_ALEN);
-
-	/* rebroadcast tq of our best ranking neighbor to ensure the rebroadcast
-	 * of our best tq value */
-	if (router && router->tq_avg != 0) {
-
-		/* rebroadcast ogm of best ranking neighbor as is */
-		if (!compare_eth(router->addr, ethhdr->h_source)) {
-			batman_packet->tq = router->tq_avg;
-
-			if (router->last_ttl)
-				batman_packet->ttl = router->last_ttl - 1;
-		}
-
-		tq_avg = router->tq_avg;
-	}
-
-	if (router)
-		neigh_node_free_ref(router);
-
-	/* apply hop penalty */
-	batman_packet->tq = hop_penalty(batman_packet->tq, bat_priv);
-
-	bat_dbg(DBG_BATMAN, bat_priv,
-		"Forwarding packet: tq_orig: %i, tq_avg: %i, "
-		"tq_forw: %i, ttl_orig: %i, ttl_forw: %i\n",
-		in_tq, tq_avg, batman_packet->tq, in_ttl - 1,
-		batman_packet->ttl);
-
-	batman_packet->seqno = htonl(batman_packet->seqno);
-	batman_packet->tt_crc = htons(batman_packet->tt_crc);
-
-	/* switch of primaries first hop flag when forwarding */
-	batman_packet->flags &= ~PRIMARIES_FIRST_HOP;
-	if (directlink)
-		batman_packet->flags |= DIRECTLINK;
-	else
-		batman_packet->flags &= ~DIRECTLINK;
-
-	send_time = forward_send_time();
-	add_bat_packet_to_list(bat_priv,
-			       (unsigned char *)batman_packet,
-			       sizeof(*batman_packet) + tt_len(tt_num_changes),
-			       if_incoming, 0, send_time);
+	bat_ogm_schedule(hard_iface, tt_num_changes);
 }
 
 static void forw_packet_free(struct forw_packet *forw_packet)
···
 	atomic_inc(&bat_priv->bcast_queue_left);
 }
 
-void send_outstanding_bat_packet(struct work_struct *work)
+void send_outstanding_bat_ogm_packet(struct work_struct *work)
 {
 	struct delayed_work *delayed_work =
 		container_of(work, struct delayed_work, work);
···
 	if (atomic_read(&bat_priv->mesh_state) == MESH_DEACTIVATING)
 		goto out;
 
-	send_packet(forw_packet);
+	bat_ogm_emit(forw_packet);
 
 	/**
 	 * we have to have at least one packet in the queue
···
 	 * shutting down
 	 */
 	if (forw_packet->own)
-		schedule_own_packet(forw_packet->if_incoming);
+		schedule_bat_ogm(forw_packet->if_incoming);
 
 out:
 	/* don't count own packet */

net/batman-adv/send.h

···
 
 int send_skb_packet(struct sk_buff *skb, struct hard_iface *hard_iface,
 		    const uint8_t *dst_addr);
-void schedule_own_packet(struct hard_iface *hard_iface);
-void schedule_forward_packet(struct orig_node *orig_node,
-			     const struct ethhdr *ethhdr,
-			     struct batman_packet *batman_packet,
-			     int directlink,
-			     struct hard_iface *if_outgoing);
+void schedule_bat_ogm(struct hard_iface *hard_iface);
 int add_bcast_packet_to_list(struct bat_priv *bat_priv,
 			     const struct sk_buff *skb, unsigned long delay);
-void send_outstanding_bat_packet(struct work_struct *work);
+void send_outstanding_bat_ogm_packet(struct work_struct *work);
 void purge_outstanding_packets(struct bat_priv *bat_priv,
 			       const struct hard_iface *hard_iface);
 

net/batman-adv/soft-interface.c

···
 {
 	struct bat_priv *bat_priv = netdev_priv(dev);
 	struct ethhdr *ethhdr = (struct ethhdr *)skb->data;
-	struct batman_packet *batman_packet;
+	struct batman_ogm_packet *batman_ogm_packet;
 	struct softif_neigh *softif_neigh = NULL;
 	struct hard_iface *primary_if = NULL;
 	struct softif_neigh *curr_softif_neigh = NULL;
 
 	if (ntohs(ethhdr->h_proto) == ETH_P_8021Q)
-		batman_packet = (struct batman_packet *)
+		batman_ogm_packet = (struct batman_ogm_packet *)
 					(skb->data + ETH_HLEN + VLAN_HLEN);
 	else
-		batman_packet = (struct batman_packet *)(skb->data + ETH_HLEN);
+		batman_ogm_packet = (struct batman_ogm_packet *)
+							(skb->data + ETH_HLEN);
 
-	if (batman_packet->version != COMPAT_VERSION)
+	if (batman_ogm_packet->version != COMPAT_VERSION)
 		goto out;
 
-	if (batman_packet->packet_type != BAT_PACKET)
+	if (batman_ogm_packet->packet_type != BAT_OGM)
 		goto out;
 
-	if (!(batman_packet->flags & PRIMARIES_FIRST_HOP))
+	if (!(batman_ogm_packet->flags & PRIMARIES_FIRST_HOP))
 		goto out;
 
-	if (is_my_mac(batman_packet->orig))
+	if (is_my_mac(batman_ogm_packet->orig))
 		goto out;
 
-	softif_neigh = softif_neigh_get(bat_priv, batman_packet->orig, vid);
+	softif_neigh = softif_neigh_get(bat_priv, batman_ogm_packet->orig, vid);
 	if (!softif_neigh)
 		goto out;
 
···
 
 	soft_iface = alloc_netdev(sizeof(*bat_priv), name, interface_setup);
 
-	if (!soft_iface) {
-		pr_err("Unable to allocate the batman interface: %s\n", name);
+	if (!soft_iface)
 		goto out;
-	}
 
 	ret = register_netdevice(soft_iface);
 	if (ret < 0) {

net/batman-adv/vis.c

···
 	}
 
 	bat_priv->my_vis_info = kmalloc(MAX_VIS_PACKET_SIZE, GFP_ATOMIC);
-	if (!bat_priv->my_vis_info) {
-		pr_err("Can't initialize vis packet\n");
+	if (!bat_priv->my_vis_info)
 		goto err;
-	}
 
 	bat_priv->my_vis_info->skb_packet = dev_alloc_skb(sizeof(*packet) +
 							  MAX_VIS_PACKET_SIZE +