Merge tag 'batman-adv-for-davem' of git://git.open-mesh.org/linux-merge

Included changes:
- drop dependency against CRC16
- move to new release version
- add size check at compile time for packet structs
- update copyright years in every file
- implement new bonding/interface alternation feature
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Documentation/networking/batman-adv.txt

@@ -66,11 +66,10 @@ All  mesh  wide  settings  can be found in batman's own interface
 folder:
 
 # ls /sys/class/net/bat0/mesh/
-# aggregated_ogms        gw_bandwidth           log_level
-# ap_isolation           gw_mode                orig_interval
-# bonding                gw_sel_class           routing_algo
-# bridge_loop_avoidance  hop_penalty            fragmentation
-
+#aggregated_ogms        distributed_arp_table  gw_sel_class    orig_interval
+#ap_isolation           fragmentation          hop_penalty     routing_algo
+#bonding                gw_bandwidth           isolation_mark  vlan0
+#bridge_loop_avoidance  gw_mode                log_level
 
 There is a special folder for debugging information:
 

net/batman-adv/Kconfig

@@ -5,7 +5,6 @@
 config BATMAN_ADV
 	tristate "B.A.T.M.A.N. Advanced Meshing Protocol"
 	depends on NET
-	select CRC16
 	select LIBCRC32C
         default n
 	help

net/batman-adv/Makefile

 #
-# Copyright (C) 2007-2013 B.A.T.M.A.N. contributors:
+# Copyright (C) 2007-2014 B.A.T.M.A.N. contributors:
 #
 # Marek Lindner, Simon Wunderlich
 #

net/batman-adv/bat_algo.h

-/* Copyright (C) 2011-2013 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2011-2014 B.A.T.M.A.N. contributors:
  *
  * Marek Lindner
  *

net/batman-adv/bitarray.c

-/* Copyright (C) 2006-2013 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2006-2014 B.A.T.M.A.N. contributors:
  *
  * Simon Wunderlich, Marek Lindner
  *

net/batman-adv/bitarray.h

-/* Copyright (C) 2006-2013 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2006-2014 B.A.T.M.A.N. contributors:
  *
  * Simon Wunderlich, Marek Lindner
  *

net/batman-adv/bridge_loop_avoidance.c

-/* Copyright (C) 2011-2013 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2011-2014 B.A.T.M.A.N. contributors:
  *
  * Simon Wunderlich
  *

net/batman-adv/bridge_loop_avoidance.h

-/* Copyright (C) 2011-2013 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2011-2014 B.A.T.M.A.N. contributors:
  *
  * Simon Wunderlich
  *

net/batman-adv/debugfs.c

-/* Copyright (C) 2010-2013 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2010-2014 B.A.T.M.A.N. contributors:
  *
  * Marek Lindner
  *
@@ -248,6 +248,19 @@ static int batadv_originators_open(struct inode *inode, struct file *file)
 	return single_open(file, batadv_orig_seq_print_text, net_dev);
 }
 
+/**
+ * batadv_originators_hardif_open - handles debugfs output for the
+ *  originator table of an hard interface
+ * @inode: inode pointer to debugfs file
+ * @file: pointer to the seq_file
+ */
+static int batadv_originators_hardif_open(struct inode *inode,
+					  struct file *file)
+{
+	struct net_device *net_dev = (struct net_device *)inode->i_private;
+	return single_open(file, batadv_orig_hardif_seq_print_text, net_dev);
+}
+
 static int batadv_gateways_open(struct inode *inode, struct file *file)
 {
 	struct net_device *net_dev = (struct net_device *)inode->i_private;
@@ -369,6 +382,28 @@ static struct batadv_debuginfo *batadv_mesh_debuginfos[] = {
 	NULL,
 };
 
+#define BATADV_HARDIF_DEBUGINFO(_name, _mode, _open)		\
+struct batadv_debuginfo batadv_hardif_debuginfo_##_name = {	\
+	.attr = {						\
+		.name = __stringify(_name),			\
+		.mode = _mode,					\
+	},							\
+	.fops = {						\
+		.owner = THIS_MODULE,				\
+		.open = _open,					\
+		.read	= seq_read,				\
+		.llseek = seq_lseek,				\
+		.release = single_release,			\
+	},							\
+};
+static BATADV_HARDIF_DEBUGINFO(originators, S_IRUGO,
+			       batadv_originators_hardif_open);
+
+static struct batadv_debuginfo *batadv_hardif_debuginfos[] = {
+	&batadv_hardif_debuginfo_originators,
+	NULL,
+};
+
 void batadv_debugfs_init(void)
 {
 	struct batadv_debuginfo **bat_debug;
@@ -396,6 +431,7 @@ void batadv_debugfs_init(void)
 	return;
 err:
 	debugfs_remove_recursive(batadv_debugfs);
+	batadv_debugfs = NULL;
 }
 
 void batadv_debugfs_destroy(void)
@@ -404,6 +440,59 @@ void batadv_debugfs_destroy(void)
 	batadv_debugfs = NULL;
 }
 
+/**
+ * batadv_debugfs_add_hardif - creates the base directory for a hard interface
+ *  in debugfs.
+ * @hard_iface: hard interface which should be added.
+ */
+int batadv_debugfs_add_hardif(struct batadv_hard_iface *hard_iface)
+{
+	struct batadv_debuginfo **bat_debug;
+	struct dentry *file;
+
+	if (!batadv_debugfs)
+		goto out;
+
+	hard_iface->debug_dir = debugfs_create_dir(hard_iface->net_dev->name,
+						   batadv_debugfs);
+	if (!hard_iface->debug_dir)
+		goto out;
+
+	for (bat_debug = batadv_hardif_debuginfos; *bat_debug; ++bat_debug) {
+		file = debugfs_create_file(((*bat_debug)->attr).name,
+					   S_IFREG | ((*bat_debug)->attr).mode,
+					   hard_iface->debug_dir,
+					   hard_iface->net_dev,
+					   &(*bat_debug)->fops);
+		if (!file)
+			goto rem_attr;
+	}
+
+	return 0;
+rem_attr:
+	debugfs_remove_recursive(hard_iface->debug_dir);
+	hard_iface->debug_dir = NULL;
+out:
+#ifdef CONFIG_DEBUG_FS
+	return -ENOMEM;
+#else
+	return 0;
+#endif /* CONFIG_DEBUG_FS */
+}
+
+/**
+ * batadv_debugfs_del_hardif - delete the base directory for a hard interface
+ *  in debugfs.
+ * @hard_iface: hard interface which is deleted.
+ */
+void batadv_debugfs_del_hardif(struct batadv_hard_iface *hard_iface)
+{
+	if (batadv_debugfs) {
+		debugfs_remove_recursive(hard_iface->debug_dir);
+		hard_iface->debug_dir = NULL;
+	}
+}
+
 int batadv_debugfs_add_meshif(struct net_device *dev)
 {
 	struct batadv_priv *bat_priv = netdev_priv(dev);

net/batman-adv/debugfs.h

-/* Copyright (C) 2010-2013 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2010-2014 B.A.T.M.A.N. contributors:
  *
  * Marek Lindner
  *
@@ -24,5 +24,7 @@ void batadv_debugfs_init(void);
 void batadv_debugfs_destroy(void);
 int batadv_debugfs_add_meshif(struct net_device *dev);
 void batadv_debugfs_del_meshif(struct net_device *dev);
+int batadv_debugfs_add_hardif(struct batadv_hard_iface *hard_iface);
+void batadv_debugfs_del_hardif(struct batadv_hard_iface *hard_iface);
 
 #endif /* _NET_BATMAN_ADV_DEBUGFS_H_ */

net/batman-adv/distributed-arp-table.c

-/* Copyright (C) 2011-2013 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2011-2014 B.A.T.M.A.N. contributors:
  *
  * Antonio Quartulli
  *
@@ -589,7 +589,8 @@ static bool batadv_dat_send_data(struct batadv_priv *bat_priv,
 		if (cand[i].type == BATADV_DAT_CANDIDATE_NOT_FOUND)
 			continue;
 
-		neigh_node = batadv_orig_node_get_router(cand[i].orig_node);
+		neigh_node = batadv_orig_router_get(cand[i].orig_node,
+						    BATADV_IF_DEFAULT);
 		if (!neigh_node)
 			goto free_orig;
 

net/batman-adv/distributed-arp-table.h

-/* Copyright (C) 2011-2013 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2011-2014 B.A.T.M.A.N. contributors:
  *
  * Antonio Quartulli
  *

net/batman-adv/fragmentation.c

-/* Copyright (C) 2013 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2013-2014 B.A.T.M.A.N. contributors:
  *
  * Martin Hundebøll <martin@hundeboll.net>
  *

net/batman-adv/fragmentation.h

-/* Copyright (C) 2013 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2013-2014 B.A.T.M.A.N. contributors:
  *
  * Martin Hundebøll <martin@hundeboll.net>
  *

net/batman-adv/gateway_client.c

-/* Copyright (C) 2009-2013 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2009-2014 B.A.T.M.A.N. contributors:
  *
  * Marek Lindner
  *
@@ -129,6 +129,7 @@ static struct batadv_gw_node *
 batadv_gw_get_best_gw_node(struct batadv_priv *bat_priv)
 {
 	struct batadv_neigh_node *router;
+	struct batadv_neigh_ifinfo *router_ifinfo;
 	struct batadv_gw_node *gw_node, *curr_gw = NULL;
 	uint32_t max_gw_factor = 0, tmp_gw_factor = 0;
 	uint32_t gw_divisor;
@@ -145,14 +146,19 @@ batadv_gw_get_best_gw_node(struct batadv_priv *bat_priv)
 			continue;
 
 		orig_node = gw_node->orig_node;
-		router = batadv_orig_node_get_router(orig_node);
+		router = batadv_orig_router_get(orig_node, BATADV_IF_DEFAULT);
 		if (!router)
 			continue;
 
+		router_ifinfo = batadv_neigh_ifinfo_get(router,
+							BATADV_IF_DEFAULT);
+		if (!router_ifinfo)
+			goto next;
+
 		if (!atomic_inc_not_zero(&gw_node->refcount))
 			goto next;
 
-		tq_avg = router->bat_iv.tq_avg;
+		tq_avg = router_ifinfo->bat_iv.tq_avg;
 
 		switch (atomic_read(&bat_priv->gw_sel_class)) {
 		case 1: /* fast connection */
@@ -197,6 +203,8 @@ batadv_gw_get_best_gw_node(struct batadv_priv *bat_priv)
 
 next:
 		batadv_neigh_node_free_ref(router);
+		if (router_ifinfo)
+			batadv_neigh_ifinfo_free_ref(router_ifinfo);
 	}
 	rcu_read_unlock();
 
@@ -239,6 +247,7 @@ void batadv_gw_election(struct batadv_priv *bat_priv)
 {
 	struct batadv_gw_node *curr_gw = NULL, *next_gw = NULL;
 	struct batadv_neigh_node *router = NULL;
+	struct batadv_neigh_ifinfo *router_ifinfo = NULL;
 	char gw_addr[18] = { '\0' };
 
 	if (atomic_read(&bat_priv->gw_mode) != BATADV_GW_MODE_CLIENT)
@@ -257,11 +266,19 @@ void batadv_gw_election(struct batadv_priv *bat_priv)
 	if (next_gw) {
 		sprintf(gw_addr, "%pM", next_gw->orig_node->orig);
 
-		router = batadv_orig_node_get_router(next_gw->orig_node);
+		router = batadv_orig_router_get(next_gw->orig_node,
+						BATADV_IF_DEFAULT);
 		if (!router) {
 			batadv_gw_reselect(bat_priv);
 			goto out;
 		}
+
+		router_ifinfo = batadv_neigh_ifinfo_get(router,
+							BATADV_IF_DEFAULT);
+		if (!router_ifinfo) {
+			batadv_gw_reselect(bat_priv);
+			goto out;
+		}
 	}
 
 	if ((curr_gw) && (!next_gw)) {
@@ -276,7 +293,8 @@ void batadv_gw_election(struct batadv_priv *bat_priv)
 			   next_gw->bandwidth_down / 10,
 			   next_gw->bandwidth_down % 10,
 			   next_gw->bandwidth_up / 10,
-			   next_gw->bandwidth_up % 10, router->bat_iv.tq_avg);
+			   next_gw->bandwidth_up % 10,
+			   router_ifinfo->bat_iv.tq_avg);
 		batadv_throw_uevent(bat_priv, BATADV_UEV_GW, BATADV_UEV_ADD,
 				    gw_addr);
 	} else {
@@ -286,7 +304,8 @@ void batadv_gw_election(struct batadv_priv *bat_priv)
 			   next_gw->bandwidth_down / 10,
 			   next_gw->bandwidth_down % 10,
 			   next_gw->bandwidth_up / 10,
-			   next_gw->bandwidth_up % 10, router->bat_iv.tq_avg);
+			   next_gw->bandwidth_up % 10,
+			   router_ifinfo->bat_iv.tq_avg);
 		batadv_throw_uevent(bat_priv, BATADV_UEV_GW, BATADV_UEV_CHANGE,
 				    gw_addr);
 	}
@@ -300,11 +319,15 @@ void batadv_gw_election(struct batadv_priv *bat_priv)
 		batadv_gw_node_free_ref(next_gw);
 	if (router)
 		batadv_neigh_node_free_ref(router);
+	if (router_ifinfo)
+		batadv_neigh_ifinfo_free_ref(router_ifinfo);
 }
 
 void batadv_gw_check_election(struct batadv_priv *bat_priv,
 			      struct batadv_orig_node *orig_node)
 {
+	struct batadv_neigh_ifinfo *router_orig_tq = NULL;
+	struct batadv_neigh_ifinfo *router_gw_tq = NULL;
 	struct batadv_orig_node *curr_gw_orig;
 	struct batadv_neigh_node *router_gw = NULL, *router_orig = NULL;
 	uint8_t gw_tq_avg, orig_tq_avg;
@@ -313,20 +336,30 @@ void batadv_gw_check_election(struct batadv_priv *bat_priv,
 	if (!curr_gw_orig)
 		goto reselect;
 
-	router_gw = batadv_orig_node_get_router(curr_gw_orig);
+	router_gw = batadv_orig_router_get(curr_gw_orig, BATADV_IF_DEFAULT);
 	if (!router_gw)
 		goto reselect;
 
+	router_gw_tq = batadv_neigh_ifinfo_get(router_gw,
+					       BATADV_IF_DEFAULT);
+	if (!router_gw_tq)
+		goto reselect;
+
 	/* this node already is the gateway */
 	if (curr_gw_orig == orig_node)
 		goto out;
 
-	router_orig = batadv_orig_node_get_router(orig_node);
+	router_orig = batadv_orig_router_get(orig_node, BATADV_IF_DEFAULT);
 	if (!router_orig)
 		goto out;
 
-	gw_tq_avg = router_gw->bat_iv.tq_avg;
-	orig_tq_avg = router_orig->bat_iv.tq_avg;
+	router_orig_tq = batadv_neigh_ifinfo_get(router_orig,
+						 BATADV_IF_DEFAULT);
+	if (!router_orig_tq)
+		goto out;
+
+	gw_tq_avg = router_gw_tq->bat_iv.tq_avg;
+	orig_tq_avg = router_orig_tq->bat_iv.tq_avg;
 
 	/* the TQ value has to be better */
 	if (orig_tq_avg < gw_tq_avg)
@@ -352,6 +385,10 @@ void batadv_gw_check_election(struct batadv_priv *bat_priv,
 		batadv_neigh_node_free_ref(router_gw);
 	if (router_orig)
 		batadv_neigh_node_free_ref(router_orig);
+	if (router_gw_tq)
+		batadv_neigh_ifinfo_free_ref(router_gw_tq);
+	if (router_orig_tq)
+		batadv_neigh_ifinfo_free_ref(router_orig_tq);
 
 	return;
 }
@@ -537,28 +574,36 @@ static int batadv_write_buffer_text(struct batadv_priv *bat_priv,
 {
 	struct batadv_gw_node *curr_gw;
 	struct batadv_neigh_node *router;
+	struct batadv_neigh_ifinfo *router_ifinfo = NULL;
 	int ret = -1;
 
-	router = batadv_orig_node_get_router(gw_node->orig_node);
+	router = batadv_orig_router_get(gw_node->orig_node, BATADV_IF_DEFAULT);
 	if (!router)
 		goto out;
 
+	router_ifinfo = batadv_neigh_ifinfo_get(router, BATADV_IF_DEFAULT);
+	if (!router_ifinfo)
+		goto out;
+
 	curr_gw = batadv_gw_get_selected_gw_node(bat_priv);
 
 	ret = seq_printf(seq, "%s %pM (%3i) %pM [%10s]: %u.%u/%u.%u MBit\n",
 			 (curr_gw == gw_node ? "=>" : "  "),
 			 gw_node->orig_node->orig,
-			 router->bat_iv.tq_avg, router->addr,
+			 router_ifinfo->bat_iv.tq_avg, router->addr,
 			 router->if_incoming->net_dev->name,
 			 gw_node->bandwidth_down / 10,
 			 gw_node->bandwidth_down % 10,
 			 gw_node->bandwidth_up / 10,
 			 gw_node->bandwidth_up % 10);
 
-	batadv_neigh_node_free_ref(router);
 	if (curr_gw)
 		batadv_gw_node_free_ref(curr_gw);
 out:
+	if (router_ifinfo)
+		batadv_neigh_ifinfo_free_ref(router_ifinfo);
+	if (router)
+		batadv_neigh_node_free_ref(router);
 	return ret;
 }
 
@@ -746,6 +791,7 @@ bool batadv_gw_out_of_range(struct batadv_priv *bat_priv,
 	struct batadv_neigh_node *neigh_curr = NULL, *neigh_old = NULL;
 	struct batadv_orig_node *orig_dst_node = NULL;
 	struct batadv_gw_node *gw_node = NULL, *curr_gw = NULL;
+	struct batadv_neigh_ifinfo *curr_ifinfo, *old_ifinfo;
 	struct ethhdr *ethhdr = (struct ethhdr *)skb->data;
 	bool out_of_range = false;
 	uint8_t curr_tq_avg;
@@ -787,7 +833,14 @@ bool batadv_gw_out_of_range(struct batadv_priv *bat_priv,
 		if (!neigh_curr)
 			goto out;
 
-		curr_tq_avg = neigh_curr->bat_iv.tq_avg;
+		curr_ifinfo = batadv_neigh_ifinfo_get(neigh_curr,
+						      BATADV_IF_DEFAULT);
+		if (!curr_ifinfo)
+			goto out;
+
+		curr_tq_avg = curr_ifinfo->bat_iv.tq_avg;
+		batadv_neigh_ifinfo_free_ref(curr_ifinfo);
+
 		break;
 	case BATADV_GW_MODE_OFF:
 	default:
@@ -798,8 +851,13 @@ bool batadv_gw_out_of_range(struct batadv_priv *bat_priv,
 	if (!neigh_old)
 		goto out;
 
-	if (curr_tq_avg - neigh_old->bat_iv.tq_avg > BATADV_GW_THRESHOLD)
+	old_ifinfo = batadv_neigh_ifinfo_get(neigh_old, BATADV_IF_DEFAULT);
+	if (!old_ifinfo)
+		goto out;
+
+	if ((curr_tq_avg - old_ifinfo->bat_iv.tq_avg) > BATADV_GW_THRESHOLD)
 		out_of_range = true;
+	batadv_neigh_ifinfo_free_ref(old_ifinfo);
 
 out:
 	if (orig_dst_node)

net/batman-adv/gateway_client.h

-/* Copyright (C) 2009-2013 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2009-2014 B.A.T.M.A.N. contributors:
  *
  * Marek Lindner
  *

net/batman-adv/gateway_common.c

-/* Copyright (C) 2009-2013 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2009-2014 B.A.T.M.A.N. contributors:
  *
  * Marek Lindner
  *

net/batman-adv/gateway_common.h

-/* Copyright (C) 2009-2013 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2009-2014 B.A.T.M.A.N. contributors:
  *
  * Marek Lindner
  *

net/batman-adv/hard-interface.c

-/* Copyright (C) 2007-2013 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2007-2014 B.A.T.M.A.N. contributors:
  *
  * Marek Lindner, Simon Wunderlich
  *
@@ -23,6 +23,7 @@
 #include "translation-table.h"
 #include "routing.h"
 #include "sysfs.h"
+#include "debugfs.h"
 #include "originator.h"
 #include "hash.h"
 #include "bridge_loop_avoidance.h"
@@ -539,6 +540,7 @@ static void batadv_hardif_remove_interface_finish(struct work_struct *work)
 	hard_iface = container_of(work, struct batadv_hard_iface,
 				  cleanup_work);
 
+	batadv_debugfs_del_hardif(hard_iface);
 	batadv_sysfs_del_hardif(&hard_iface->hardif_obj);
 	batadv_hardif_free_ref(hard_iface);
 }
@@ -569,6 +571,11 @@ batadv_hardif_add_interface(struct net_device *net_dev)
 	hard_iface->net_dev = net_dev;
 	hard_iface->soft_iface = NULL;
 	hard_iface->if_status = BATADV_IF_NOT_IN_USE;
+
+	ret = batadv_debugfs_add_hardif(hard_iface);
+	if (ret)
+		goto free_sysfs;
+
 	INIT_LIST_HEAD(&hard_iface->list);
 	INIT_WORK(&hard_iface->cleanup_work,
 		  batadv_hardif_remove_interface_finish);
@@ -585,6 +592,8 @@ batadv_hardif_add_interface(struct net_device *net_dev)
 
 	return hard_iface;
 
+free_sysfs:
+	batadv_sysfs_del_hardif(&hard_iface->hardif_obj);
 free_if:
 	kfree(hard_iface);
 release_dev:

net/batman-adv/hard-interface.h

-/* Copyright (C) 2007-2013 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2007-2014 B.A.T.M.A.N. contributors:
  *
  * Marek Lindner, Simon Wunderlich
  *
@@ -40,6 +40,7 @@ enum batadv_hard_if_cleanup {
 extern struct notifier_block batadv_hard_if_notifier;
 
 bool batadv_is_wifi_netdev(struct net_device *net_device);
+bool batadv_is_wifi_iface(int ifindex);
 struct batadv_hard_iface*
 batadv_hardif_get_by_netdev(const struct net_device *net_dev);
 int batadv_hardif_enable_interface(struct batadv_hard_iface *hard_iface,
@@ -51,6 +52,11 @@ int batadv_hardif_min_mtu(struct net_device *soft_iface);
 void batadv_update_min_mtu(struct net_device *soft_iface);
 void batadv_hardif_free_rcu(struct rcu_head *rcu);
 
+/**
+ * batadv_hardif_free_ref - decrement the hard interface refcounter and
+ *  possibly free it
+ * @hard_iface: the hard interface to free
+ */
 static inline void
 batadv_hardif_free_ref(struct batadv_hard_iface *hard_iface)
 {
@@ -58,6 +64,18 @@ batadv_hardif_free_ref(struct batadv_hard_iface *hard_iface)
 		call_rcu(&hard_iface->rcu, batadv_hardif_free_rcu);
 }
 
+/**
+ * batadv_hardif_free_ref_now - decrement the hard interface refcounter and
+ *  possibly free it (without rcu callback)
+ * @hard_iface: the hard interface to free
+ */
+static inline void
+batadv_hardif_free_ref_now(struct batadv_hard_iface *hard_iface)
+{
+	if (atomic_dec_and_test(&hard_iface->refcount))
+		batadv_hardif_free_rcu(&hard_iface->rcu);
+}
+
 static inline struct batadv_hard_iface *
 batadv_primary_if_get_selected(struct batadv_priv *bat_priv)
 {

net/batman-adv/hash.c

-/* Copyright (C) 2006-2013 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2006-2014 B.A.T.M.A.N. contributors:
  *
  * Simon Wunderlich, Marek Lindner
  *

net/batman-adv/hash.h

-/* Copyright (C) 2006-2013 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2006-2014 B.A.T.M.A.N. contributors:
  *
  * Simon Wunderlich, Marek Lindner
  *

net/batman-adv/icmp_socket.c

-/* Copyright (C) 2007-2013 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2007-2014 B.A.T.M.A.N. contributors:
  *
  * Marek Lindner
  *
@@ -215,7 +215,8 @@ static ssize_t batadv_socket_write(struct file *file, const char __user *buff,
 		if (!orig_node)
 			goto dst_unreach;
 
-		neigh_node = batadv_orig_node_get_router(orig_node);
+		neigh_node = batadv_orig_router_get(orig_node,
+						    BATADV_IF_DEFAULT);
 		if (!neigh_node)
 			goto dst_unreach;
 

net/batman-adv/icmp_socket.h

-/* Copyright (C) 2007-2013 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2007-2014 B.A.T.M.A.N. contributors:
  *
  * Marek Lindner
  *

net/batman-adv/main.c

-/* Copyright (C) 2007-2013 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2007-2014 B.A.T.M.A.N. contributors:
  *
  * Marek Lindner, Simon Wunderlich
  *
@@ -419,13 +419,23 @@ static void batadv_recv_handler_init(void)
 	for (i = BATADV_UNICAST_MIN; i <= BATADV_UNICAST_MAX; i++)
 		batadv_rx_handler[i] = batadv_recv_unhandled_unicast_packet;
 
-	/* compile time checks for struct member offsets */
-	BUILD_BUG_ON(offsetof(struct batadv_unicast_4addr_packet, src) != 10);
-	BUILD_BUG_ON(offsetof(struct batadv_unicast_packet, dest) != 4);
-	BUILD_BUG_ON(offsetof(struct batadv_unicast_tvlv_packet, dst) != 4);
-	BUILD_BUG_ON(offsetof(struct batadv_frag_packet, dest) != 4);
-	BUILD_BUG_ON(offsetof(struct batadv_icmp_packet, dst) != 4);
-	BUILD_BUG_ON(offsetof(struct batadv_icmp_packet_rr, dst) != 4);
+	/* compile time checks for sizes */
+	BUILD_BUG_ON(sizeof(struct batadv_bla_claim_dst) != 6);
+	BUILD_BUG_ON(sizeof(struct batadv_ogm_packet) != 24);
+	BUILD_BUG_ON(sizeof(struct batadv_icmp_header) != 20);
+	BUILD_BUG_ON(sizeof(struct batadv_icmp_packet) != 20);
+	BUILD_BUG_ON(sizeof(struct batadv_icmp_packet_rr) != 116);
+	BUILD_BUG_ON(sizeof(struct batadv_unicast_packet) != 10);
+	BUILD_BUG_ON(sizeof(struct batadv_unicast_4addr_packet) != 18);
+	BUILD_BUG_ON(sizeof(struct batadv_frag_packet) != 20);
+	BUILD_BUG_ON(sizeof(struct batadv_bcast_packet) != 14);
+	BUILD_BUG_ON(sizeof(struct batadv_coded_packet) != 46);
+	BUILD_BUG_ON(sizeof(struct batadv_unicast_tvlv_packet) != 20);
+	BUILD_BUG_ON(sizeof(struct batadv_tvlv_hdr) != 4);
+	BUILD_BUG_ON(sizeof(struct batadv_tvlv_gateway_data) != 8);
+	BUILD_BUG_ON(sizeof(struct batadv_tvlv_tt_vlan_data) != 8);
+	BUILD_BUG_ON(sizeof(struct batadv_tvlv_tt_change) != 12);
+	BUILD_BUG_ON(sizeof(struct batadv_tvlv_roam_adv) != 8);
 
 	/* broadcast packet */
 	batadv_rx_handler[BATADV_BCAST] = batadv_recv_bcast_packet;

net/batman-adv/main.h

-/* Copyright (C) 2007-2013 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2007-2014 B.A.T.M.A.N. contributors:
  *
  * Marek Lindner, Simon Wunderlich
  *
@@ -24,7 +24,7 @@
 #define BATADV_DRIVER_DEVICE "batman-adv"
 
 #ifndef BATADV_SOURCE_VERSION
-#define BATADV_SOURCE_VERSION "2013.5.0"
+#define BATADV_SOURCE_VERSION "2014.1.0"
 #endif
 
 /* B.A.T.M.A.N. parameters */
@@ -72,6 +72,12 @@
 
 #define BATADV_NO_MARK 0
 
+/* default interface for multi interface operation. The default interface is
+ * used for communication which originated locally (i.e. is not forwarded)
+ * or where special forwarding is not desired/necessary.
+ */
+#define BATADV_IF_DEFAULT	((struct batadv_hard_iface *)NULL)
+
 #define BATADV_NUM_WORDS BITS_TO_LONGS(BATADV_TQ_LOCAL_WINDOW_SIZE)
 
 #define BATADV_LOG_BUF_LEN 8192	  /* has to be a power of 2 */

net/batman-adv/network-coding.c

-/* Copyright (C) 2012-2013 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2012-2014 B.A.T.M.A.N. contributors:
  *
  * Martin Hundebøll, Jeppe Ledet-Pedersen
  *
@@ -718,9 +718,21 @@ static bool batadv_can_nc_with_orig(struct batadv_priv *bat_priv,
 				    struct batadv_orig_node *orig_node,
 				    struct batadv_ogm_packet *ogm_packet)
 {
-	if (orig_node->last_real_seqno != ntohl(ogm_packet->seqno))
+	struct batadv_orig_ifinfo *orig_ifinfo;
+	uint32_t last_real_seqno;
+	uint8_t last_ttl;
+
+	orig_ifinfo = batadv_orig_ifinfo_get(orig_node, BATADV_IF_DEFAULT);
+	if (!orig_ifinfo)
 		return false;
-	if (orig_node->last_ttl != ogm_packet->ttl + 1)
+
+	last_ttl = orig_ifinfo->last_ttl;
+	last_real_seqno = orig_ifinfo->last_real_seqno;
+	batadv_orig_ifinfo_free_ref(orig_ifinfo);
+
+	if (last_real_seqno != ntohl(ogm_packet->seqno))
+		return false;
+	if (last_ttl != ogm_packet->ttl + 1)
 		return false;
 	if (!batadv_compare_eth(ogm_packet->orig, ogm_packet->prev_sender))
 		return false;
@@ -1008,6 +1020,8 @@ static bool batadv_nc_code_packets(struct batadv_priv *bat_priv,
 	struct batadv_coded_packet *coded_packet;
 	struct batadv_neigh_node *neigh_tmp, *router_neigh;
 	struct batadv_neigh_node *router_coding = NULL;
+	struct batadv_neigh_ifinfo *router_neigh_ifinfo = NULL;
+	struct batadv_neigh_ifinfo *router_coding_ifinfo = NULL;
 	uint8_t *first_source, *first_dest, *second_source, *second_dest;
 	__be32 packet_id1, packet_id2;
 	size_t count;
@@ -1017,19 +1031,34 @@ static bool batadv_nc_code_packets(struct batadv_priv *bat_priv,
 	int coded_size = sizeof(*coded_packet);
 	int header_add = coded_size - unicast_size;
 
-	router_neigh = batadv_orig_node_get_router(neigh_node->orig_node);
+	/* TODO: do we need to consider the outgoing interface for
+	 * coded packets?
+	 */
+	router_neigh = batadv_orig_router_get(neigh_node->orig_node,
+					      BATADV_IF_DEFAULT);
 	if (!router_neigh)
 		goto out;
 
+	router_neigh_ifinfo = batadv_neigh_ifinfo_get(router_neigh,
+						      BATADV_IF_DEFAULT);
+	if (!router_neigh_ifinfo)
+		goto out;
+
 	neigh_tmp = nc_packet->neigh_node;
-	router_coding = batadv_orig_node_get_router(neigh_tmp->orig_node);
+	router_coding = batadv_orig_router_get(neigh_tmp->orig_node,
+					       BATADV_IF_DEFAULT);
 	if (!router_coding)
 		goto out;
 
-	tq_tmp = batadv_nc_random_weight_tq(router_neigh->bat_iv.tq_avg);
-	tq_weighted_neigh = tq_tmp;
-	tq_tmp = batadv_nc_random_weight_tq(router_coding->bat_iv.tq_avg);
-	tq_weighted_coding = tq_tmp;
+	router_coding_ifinfo = batadv_neigh_ifinfo_get(router_coding,
+						       BATADV_IF_DEFAULT);
+	if (!router_coding_ifinfo)
+		goto out;
+
+	tq_tmp = router_neigh_ifinfo->bat_iv.tq_avg;
+	tq_weighted_neigh = batadv_nc_random_weight_tq(tq_tmp);
+	tq_tmp = router_coding_ifinfo->bat_iv.tq_avg;
+	tq_weighted_coding = batadv_nc_random_weight_tq(tq_tmp);
 
 	/* Select one destination for the MAC-header dst-field based on
 	 * weighted TQ-values.
@@ -1153,6 +1182,10 @@ static bool batadv_nc_code_packets(struct batadv_priv *bat_priv,
 		batadv_neigh_node_free_ref(router_neigh);
 	if (router_coding)
 		batadv_neigh_node_free_ref(router_coding);
+	if (router_neigh_ifinfo)
+		batadv_neigh_ifinfo_free_ref(router_neigh_ifinfo);
+	if (router_coding_ifinfo)
+		batadv_neigh_ifinfo_free_ref(router_coding_ifinfo);
 	return res;
 }
 

net/batman-adv/network-coding.h

-/* Copyright (C) 2012-2013 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2012-2014 B.A.T.M.A.N. contributors:
  *
  * Martin Hundebøll, Jeppe Ledet-Pedersen
  *
@@ -62,7 +62,6 @@ static inline int batadv_nc_mesh_init(struct batadv_priv *bat_priv)
 
 static inline void batadv_nc_mesh_free(struct batadv_priv *bat_priv)
 {
-	return;
 }
 
 static inline void
@@ -72,7 +71,6 @@ batadv_nc_update_nc_node(struct batadv_priv *bat_priv,
 			 struct batadv_ogm_packet *ogm_packet,
 			 int is_single_hop_neigh)
 {
-	return;
 }
 
 static inline void
@@ -81,17 +79,14 @@ batadv_nc_purge_orig(struct batadv_priv *bat_priv,
 		     bool (*to_purge)(struct batadv_priv *,
 				      struct batadv_nc_node *))
 {
-	return;
 }
 
 static inline void batadv_nc_init_bat_priv(struct batadv_priv *bat_priv)
 {
-	return;
 }
 
 static inline void batadv_nc_init_orig(struct batadv_orig_node *orig_node)
 {
-	return;
 }
 
 static inline bool batadv_nc_skb_forward(struct sk_buff *skb,
@@ -104,14 +99,12 @@ static inline void
 batadv_nc_skb_store_for_decoding(struct batadv_priv *bat_priv,
 				 struct sk_buff *skb)
 {
-	return;
 }
 
 static inline void
 batadv_nc_skb_store_sniffed_unicast(struct batadv_priv *bat_priv,
 				    struct sk_buff *skb)
 {
-	return;
 }
 
 static inline int batadv_nc_nodes_seq_print_text(struct seq_file *seq,

net/batman-adv/originator.c

-/* Copyright (C) 2009-2013 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2009-2014 B.A.T.M.A.N. contributors:
  *
  * Marek Lindner, Simon Wunderlich
  *
@@ -148,20 +148,114 @@ int batadv_originator_init(struct batadv_priv *bat_priv)
 	return -ENOMEM;
 }
 
+/**
+ * batadv_neigh_ifinfo_free_rcu - free the neigh_ifinfo object
+ * @rcu: rcu pointer of the neigh_ifinfo object
+ */
+static void batadv_neigh_ifinfo_free_rcu(struct rcu_head *rcu)
+{
+	struct batadv_neigh_ifinfo *neigh_ifinfo;
+
+	neigh_ifinfo = container_of(rcu, struct batadv_neigh_ifinfo, rcu);
+
+	if (neigh_ifinfo->if_outgoing != BATADV_IF_DEFAULT)
+		batadv_hardif_free_ref_now(neigh_ifinfo->if_outgoing);
+
+	kfree(neigh_ifinfo);
+}
+
+/**
+ * batadv_neigh_ifinfo_free_now - decrement the refcounter and possibly free
+ *  the neigh_ifinfo (without rcu callback)
+ * @neigh_ifinfo: the neigh_ifinfo object to release
+ */
+static void
+batadv_neigh_ifinfo_free_ref_now(struct batadv_neigh_ifinfo *neigh_ifinfo)
+{
+	if (atomic_dec_and_test(&neigh_ifinfo->refcount))
+		batadv_neigh_ifinfo_free_rcu(&neigh_ifinfo->rcu);
+}
+
+/**
+ * batadv_neigh_ifinfo_free_ref - decrement the refcounter and possibly free
+ *  the neigh_ifinfo
+ * @neigh_ifinfo: the neigh_ifinfo object to release
+ */
+void batadv_neigh_ifinfo_free_ref(struct batadv_neigh_ifinfo *neigh_ifinfo)
+{
+	if (atomic_dec_and_test(&neigh_ifinfo->refcount))
+		call_rcu(&neigh_ifinfo->rcu, batadv_neigh_ifinfo_free_rcu);
+}
+
+/**
+ * batadv_neigh_node_free_rcu - free the neigh_node
+ * @rcu: rcu pointer of the neigh_node
+ */
+static void batadv_neigh_node_free_rcu(struct rcu_head *rcu)
+{
+	struct hlist_node *node_tmp;
+	struct batadv_neigh_node *neigh_node;
+	struct batadv_neigh_ifinfo *neigh_ifinfo;
+
+	neigh_node = container_of(rcu, struct batadv_neigh_node, rcu);
+
+	hlist_for_each_entry_safe(neigh_ifinfo, node_tmp,
+				  &neigh_node->ifinfo_list, list) {
+		batadv_neigh_ifinfo_free_ref_now(neigh_ifinfo);
+	}
+	batadv_hardif_free_ref_now(neigh_node->if_incoming);
+
+	kfree(neigh_node);
+}
+
+/**
+ * batadv_neigh_node_free_ref_now - decrement the neighbors refcounter
+ *  and possibly free it (without rcu callback)
+ * @neigh_node: neigh neighbor to free
+ */
+static void
+batadv_neigh_node_free_ref_now(struct batadv_neigh_node *neigh_node)
+{
+	if (atomic_dec_and_test(&neigh_node->refcount))
+		batadv_neigh_node_free_rcu(&neigh_node->rcu);
+}
+
+/**
+ * batadv_neigh_node_free_ref - decrement the neighbors refcounter
+ *  and possibly free it
+ * @neigh_node: neigh neighbor to free
+ */
 void batadv_neigh_node_free_ref(struct batadv_neigh_node *neigh_node)
 {
 	if (atomic_dec_and_test(&neigh_node->refcount))
-		kfree_rcu(neigh_node, rcu);
+		call_rcu(&neigh_node->rcu, batadv_neigh_node_free_rcu);
 }
 
-/* increases the refcounter of a found router */
+/**
+ * batadv_orig_node_get_router - router to the originator depending on iface
+ * @orig_node: the orig node for the router
+ * @if_outgoing: the interface where the payload packet has been received or
+ *  the OGM should be sent to
+ *
+ * Returns the neighbor which should be router for this orig_node/iface.
+ *
+ * The object is returned with refcounter increased by 1.
+ */
 struct batadv_neigh_node *
-batadv_orig_node_get_router(struct batadv_orig_node *orig_node)
+batadv_orig_router_get(struct batadv_orig_node *orig_node,
+		       const struct batadv_hard_iface *if_outgoing)
 {
-	struct batadv_neigh_node *router;
+	struct batadv_orig_ifinfo *orig_ifinfo;
+	struct batadv_neigh_node *router = NULL;
 
 	rcu_read_lock();
-	router = rcu_dereference(orig_node->router);
+	hlist_for_each_entry_rcu(orig_ifinfo, &orig_node->ifinfo_list, list) {
+		if (orig_ifinfo->if_outgoing != if_outgoing)
+			continue;
+
+		router = rcu_dereference(orig_ifinfo->router);
+		break;
+	}
 
 	if (router && !atomic_inc_not_zero(&router->refcount))
 		router = NULL;
@@ -170,6 +264,164 @@ batadv_orig_node_get_router(struct batadv_orig_node *orig_node)
 	return router;
 }
 
+/**
+ * batadv_orig_ifinfo_get - find the ifinfo from an orig_node
+ * @orig_node: the orig node to be queried
+ * @if_outgoing: the interface for which the ifinfo should be acquired
+ *
+ * Returns the requested orig_ifinfo or NULL if not found.
+ *
+ * The object is returned with refcounter increased by 1.
+ */
+struct batadv_orig_ifinfo *
+batadv_orig_ifinfo_get(struct batadv_orig_node *orig_node,
+		       struct batadv_hard_iface *if_outgoing)
+{
+	struct batadv_orig_ifinfo *tmp, *orig_ifinfo = NULL;
+
+	rcu_read_lock();
+	hlist_for_each_entry_rcu(tmp, &orig_node->ifinfo_list,
+				 list) {
+		if (tmp->if_outgoing != if_outgoing)
+			continue;
+
+		if (!atomic_inc_not_zero(&tmp->refcount))
+			continue;
+
+		orig_ifinfo = tmp;
+		break;
+	}
+	rcu_read_unlock();
+
+	return orig_ifinfo;
+}
+
+/**
+ * batadv_orig_ifinfo_new - search and possibly create an orig_ifinfo object
+ * @orig_node: the orig node to be queried
+ * @if_outgoing: the interface for which the ifinfo should be acquired
+ *
+ * Returns NULL in case of failure or the orig_ifinfo object for the if_outgoing
+ * interface otherwise. The object is created and added to the list
+ * if it does not exist.
+ *
+ * The object is returned with refcounter increased by 1.
+ */
+struct batadv_orig_ifinfo *
+batadv_orig_ifinfo_new(struct batadv_orig_node *orig_node,
+		       struct batadv_hard_iface *if_outgoing)
+{
+	struct batadv_orig_ifinfo *orig_ifinfo = NULL;
+	unsigned long reset_time;
+
+	spin_lock_bh(&orig_node->neigh_list_lock);
+
+	orig_ifinfo = batadv_orig_ifinfo_get(orig_node, if_outgoing);
+	if (orig_ifinfo)
+		goto out;
+
+	orig_ifinfo = kzalloc(sizeof(*orig_ifinfo), GFP_ATOMIC);
+	if (!orig_ifinfo)
+		goto out;
+
+	if (if_outgoing != BATADV_IF_DEFAULT &&
+	    !atomic_inc_not_zero(&if_outgoing->refcount)) {
+		kfree(orig_ifinfo);
+		orig_ifinfo = NULL;
+		goto out;
+	}
+
+	reset_time = jiffies - 1;
+	reset_time -= msecs_to_jiffies(BATADV_RESET_PROTECTION_MS);
+	orig_ifinfo->batman_seqno_reset = reset_time;
+	orig_ifinfo->if_outgoing = if_outgoing;
+	INIT_HLIST_NODE(&orig_ifinfo->list);
+	atomic_set(&orig_ifinfo->refcount, 2);
+	hlist_add_head_rcu(&orig_ifinfo->list,
+			   &orig_node->ifinfo_list);
+out:
+	spin_unlock_bh(&orig_node->neigh_list_lock);
+	return orig_ifinfo;
+}
+
+/**
+ * batadv_neigh_ifinfo_get - find the ifinfo from an neigh_node
+ * @neigh_node: the neigh node to be queried
+ * @if_outgoing: the interface for which the ifinfo should be acquired
+ *
+ * The object is returned with refcounter increased by 1.
+ *
+ * Returns the requested neigh_ifinfo or NULL if not found
+ */
+struct batadv_neigh_ifinfo *
+batadv_neigh_ifinfo_get(struct batadv_neigh_node *neigh,
+			struct batadv_hard_iface *if_outgoing)
+{
+	struct batadv_neigh_ifinfo *neigh_ifinfo = NULL,
+				   *tmp_neigh_ifinfo;
+
+	rcu_read_lock();
+	hlist_for_each_entry_rcu(tmp_neigh_ifinfo, &neigh->ifinfo_list,
+				 list) {
+		if (tmp_neigh_ifinfo->if_outgoing != if_outgoing)
+			continue;
+
+		if (!atomic_inc_not_zero(&tmp_neigh_ifinfo->refcount))
+			continue;
+
+		neigh_ifinfo = tmp_neigh_ifinfo;
+		break;
+	}
+	rcu_read_unlock();
+
+	return neigh_ifinfo;
+}
+
+/**
+ * batadv_neigh_ifinfo_new - search and possibly create an neigh_ifinfo object
+ * @neigh_node: the neigh node to be queried
+ * @if_outgoing: the interface for which the ifinfo should be acquired
+ *
+ * Returns NULL in case of failure or the neigh_ifinfo object for the
+ * if_outgoing interface otherwise. The object is created and added to the list
+ * if it does not exist.
+ *
+ * The object is returned with refcounter increased by 1.
+ */
+struct batadv_neigh_ifinfo *
+batadv_neigh_ifinfo_new(struct batadv_neigh_node *neigh,
+			struct batadv_hard_iface *if_outgoing)
+{
+	struct batadv_neigh_ifinfo *neigh_ifinfo;
+
+	spin_lock_bh(&neigh->ifinfo_lock);
+
+	neigh_ifinfo = batadv_neigh_ifinfo_get(neigh, if_outgoing);
+	if (neigh_ifinfo)
+		goto out;
+
+	neigh_ifinfo = kzalloc(sizeof(*neigh_ifinfo), GFP_ATOMIC);
+	if (!neigh_ifinfo)
+		goto out;
+
+	if (if_outgoing && !atomic_inc_not_zero(&if_outgoing->refcount)) {
+		kfree(neigh_ifinfo);
+		neigh_ifinfo = NULL;
+		goto out;
+	}
+
+	INIT_HLIST_NODE(&neigh_ifinfo->list);
+	atomic_set(&neigh_ifinfo->refcount, 2);
+	neigh_ifinfo->if_outgoing = if_outgoing;
+
+	hlist_add_head_rcu(&neigh_ifinfo->list, &neigh->ifinfo_list);
+
+out:
+	spin_unlock_bh(&neigh->ifinfo_lock);
+
+	return neigh_ifinfo;
+}
+
 /**
  * batadv_neigh_node_new - create and init a new neigh_node object
  * @hard_iface: the interface where the neighbour is connected to
@@ -191,13 +443,13 @@ batadv_neigh_node_new(struct batadv_hard_iface *hard_iface,
 		goto out;
 
 	INIT_HLIST_NODE(&neigh_node->list);
+	INIT_HLIST_HEAD(&neigh_node->ifinfo_list);
+	spin_lock_init(&neigh_node->ifinfo_lock);
 
 	memcpy(neigh_node->addr, neigh_addr, ETH_ALEN);
 	neigh_node->if_incoming = hard_iface;
 	neigh_node->orig_node = orig_node;
 
-	INIT_LIST_HEAD(&neigh_node->bonding_list);
-
 	/* extra reference for return */
 	atomic_set(&neigh_node->refcount, 2);
 
@@ -205,30 +457,68 @@ batadv_neigh_node_new(struct batadv_hard_iface *hard_iface,
 	return neigh_node;
 }
 
+/**
+ * batadv_orig_ifinfo_free_rcu - free the orig_ifinfo object
+ * @rcu: rcu pointer of the orig_ifinfo object
+ */
+static void batadv_orig_ifinfo_free_rcu(struct rcu_head *rcu)
+{
+	struct batadv_orig_ifinfo *orig_ifinfo;
+
+	orig_ifinfo = container_of(rcu, struct batadv_orig_ifinfo, rcu);
+
+	if (orig_ifinfo->if_outgoing != BATADV_IF_DEFAULT)
+		batadv_hardif_free_ref_now(orig_ifinfo->if_outgoing);
+
+	kfree(orig_ifinfo);
+}
+
+/**
+ * batadv_orig_ifinfo_free_ref - decrement the refcounter and possibly free
+ *  the orig_ifinfo (without rcu callback)
+ * @orig_ifinfo: the orig_ifinfo object to release
+ */
+static void
+batadv_orig_ifinfo_free_ref_now(struct batadv_orig_ifinfo *orig_ifinfo)
+{
+	if (atomic_dec_and_test(&orig_ifinfo->refcount))
+		batadv_orig_ifinfo_free_rcu(&orig_ifinfo->rcu);
+}
+
+/**
+ * batadv_orig_ifinfo_free_ref - decrement the refcounter and possibly free
+ *  the orig_ifinfo
+ * @orig_ifinfo: the orig_ifinfo object to release
+ */
+void batadv_orig_ifinfo_free_ref(struct batadv_orig_ifinfo *orig_ifinfo)
+{
+	if (atomic_dec_and_test(&orig_ifinfo->refcount))
+		call_rcu(&orig_ifinfo->rcu, batadv_orig_ifinfo_free_rcu);
+}
+
 static void batadv_orig_node_free_rcu(struct rcu_head *rcu)
 {
 	struct hlist_node *node_tmp;
-	struct batadv_neigh_node *neigh_node, *tmp_neigh_node;
+	struct batadv_neigh_node *neigh_node;
 	struct batadv_orig_node *orig_node;
+	struct batadv_orig_ifinfo *orig_ifinfo;
 
 	orig_node = container_of(rcu, struct batadv_orig_node, rcu);
 
 	spin_lock_bh(&orig_node->neigh_list_lock);
 
-	/* for all bonding members ... */
-	list_for_each_entry_safe(neigh_node, tmp_neigh_node,
-				 &orig_node->bond_list, bonding_list) {
-		list_del_rcu(&neigh_node->bonding_list);
-		batadv_neigh_node_free_ref(neigh_node);
-	}
-
 	/* for all neighbors towards this originator ... */
 	hlist_for_each_entry_safe(neigh_node, node_tmp,
 				  &orig_node->neigh_list, list) {
 		hlist_del_rcu(&neigh_node->list);
-		batadv_neigh_node_free_ref(neigh_node);
+		batadv_neigh_node_free_ref_now(neigh_node);
 	}
 
+	hlist_for_each_entry_safe(orig_ifinfo, node_tmp,
+				  &orig_node->ifinfo_list, list) {
+		hlist_del_rcu(&orig_ifinfo->list);
+		batadv_orig_ifinfo_free_ref_now(orig_ifinfo);
+	}
 	spin_unlock_bh(&orig_node->neigh_list_lock);
 
 	/* Free nc_nodes */
@@ -325,8 +615,8 @@ struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv,
 		return NULL;
 
 	INIT_HLIST_HEAD(&orig_node->neigh_list);
-	INIT_LIST_HEAD(&orig_node->bond_list);
 	INIT_LIST_HEAD(&orig_node->vlan_list);
+	INIT_HLIST_HEAD(&orig_node->ifinfo_list);
 	spin_lock_init(&orig_node->bcast_seqno_lock);
 	spin_lock_init(&orig_node->neigh_list_lock);
 	spin_lock_init(&orig_node->tt_buff_lock);
@@ -342,15 +632,11 @@ struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv,
 	orig_node->bat_priv = bat_priv;
 	memcpy(orig_node->orig, addr, ETH_ALEN);
 	batadv_dat_init_orig_node_addr(orig_node);
-	orig_node->router = NULL;
 	atomic_set(&orig_node->last_ttvn, 0);
 	orig_node->tt_buff = NULL;
 	orig_node->tt_buff_len = 0;
 	reset_time = jiffies - 1 - msecs_to_jiffies(BATADV_RESET_PROTECTION_MS);
 	orig_node->bcast_seqno_reset = reset_time;
-	orig_node->batman_seqno_reset = reset_time;
-
-	atomic_set(&orig_node->bond_candidates, 0);
 
 	/* create a vlan object for the "untagged" LAN */
 	vlan = batadv_orig_node_vlan_new(orig_node, BATADV_NO_FLAGS);
@@ -374,20 +660,76 @@ struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv,
 	return NULL;
 }
 
+/**
+ * batadv_purge_orig_ifinfo - purge obsolete ifinfo entries from originator
+ * @bat_priv: the bat priv with all the soft interface information
+ * @orig_node: orig node which is to be checked
+ *
+ * Returns true if any ifinfo entry was purged, false otherwise.
+ */
+static bool
+batadv_purge_orig_ifinfo(struct batadv_priv *bat_priv,
+			 struct batadv_orig_node *orig_node)
+{
+	struct batadv_orig_ifinfo *orig_ifinfo;
+	struct batadv_hard_iface *if_outgoing;
+	struct hlist_node *node_tmp;
+	bool ifinfo_purged = false;
+
+	spin_lock_bh(&orig_node->neigh_list_lock);
+
+	/* for all ifinfo objects for this originator */
+	hlist_for_each_entry_safe(orig_ifinfo, node_tmp,
+				  &orig_node->ifinfo_list, list) {
+		if_outgoing = orig_ifinfo->if_outgoing;
+
+		/* always keep the default interface */
+		if (if_outgoing == BATADV_IF_DEFAULT)
+			continue;
+
+		/* don't purge if the interface is not (going) down */
+		if ((if_outgoing->if_status != BATADV_IF_INACTIVE) &&
+		    (if_outgoing->if_status != BATADV_IF_NOT_IN_USE) &&
+		    (if_outgoing->if_status != BATADV_IF_TO_BE_REMOVED))
+			continue;
+
+		batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
+			   "router/ifinfo purge: originator %pM, iface: %s\n",
+			   orig_node->orig, if_outgoing->net_dev->name);
+
+		ifinfo_purged = true;
+
+		hlist_del_rcu(&orig_ifinfo->list);
+		batadv_orig_ifinfo_free_ref(orig_ifinfo);
+		if (orig_node->last_bonding_candidate == orig_ifinfo) {
+			orig_node->last_bonding_candidate = NULL;
+			batadv_orig_ifinfo_free_ref(orig_ifinfo);
+		}
+	}
+
+	spin_unlock_bh(&orig_node->neigh_list_lock);
+
+	return ifinfo_purged;
+}
+
+
+/**
+ * batadv_purge_orig_neighbors - purges neighbors from originator
+ * @bat_priv: the bat priv with all the soft interface information
+ * @orig_node: orig node which is to be checked
+ *
+ * Returns true if any neighbor was purged, false otherwise
+ */
 static bool
 batadv_purge_orig_neighbors(struct batadv_priv *bat_priv,
-			    struct batadv_orig_node *orig_node,
-			    struct batadv_neigh_node **best_neigh)
+			    struct batadv_orig_node *orig_node)
 {
-	struct batadv_algo_ops *bao = bat_priv->bat_algo_ops;
 	struct hlist_node *node_tmp;
 	struct batadv_neigh_node *neigh_node;
 	bool neigh_purged = false;
 	unsigned long last_seen;
 	struct batadv_hard_iface *if_incoming;
 
-	*best_neigh = NULL;
-
 	spin_lock_bh(&orig_node->neigh_list_lock);
 
 	/* for all neighbors towards this originator ... */
@@ -416,15 +758,7 @@ batadv_purge_orig_neighbors(struct batadv_priv *bat_priv,
 			neigh_purged = true;
 
 			hlist_del_rcu(&neigh_node->list);
-			batadv_bonding_candidate_del(orig_node, neigh_node);
 			batadv_neigh_node_free_ref(neigh_node);
-		} else {
-			/* store the best_neighbour if this is the first
-			 * iteration or if a better neighbor has been found
-			 */
-			if (!*best_neigh ||
-			    bao->bat_neigh_cmp(neigh_node, *best_neigh) > 0)
-				*best_neigh = neigh_node;
 		}
 	}
 
@@ -432,10 +766,57 @@ batadv_purge_orig_neighbors(struct batadv_priv *bat_priv,
 	return neigh_purged;
 }
 
+/**
+ * batadv_find_best_neighbor - finds the best neighbor after purging
+ * @bat_priv: the bat priv with all the soft interface information
+ * @orig_node: orig node which is to be checked
+ * @if_outgoing: the interface for which the metric should be compared
+ *
+ * Returns the current best neighbor, with refcount increased.
+ */
+static struct batadv_neigh_node *
+batadv_find_best_neighbor(struct batadv_priv *bat_priv,
+			  struct batadv_orig_node *orig_node,
+			  struct batadv_hard_iface *if_outgoing)
+{
+	struct batadv_neigh_node *best = NULL, *neigh;
+	struct batadv_algo_ops *bao = bat_priv->bat_algo_ops;
+
+	rcu_read_lock();
+	hlist_for_each_entry_rcu(neigh, &orig_node->neigh_list, list) {
+		if (best && (bao->bat_neigh_cmp(neigh, if_outgoing,
+						best, if_outgoing) <= 0))
+			continue;
+
+		if (!atomic_inc_not_zero(&neigh->refcount))
+			continue;
+
+		if (best)
+			batadv_neigh_node_free_ref(best);
+
+		best = neigh;
+	}
+	rcu_read_unlock();
+
+	return best;
+}
+
+/**
+ * batadv_purge_orig_node - purges obsolete information from an orig_node
+ * @bat_priv: the bat priv with all the soft interface information
+ * @orig_node: orig node which is to be checked
+ *
+ * This function checks if the orig_node or substructures of it have become
+ * obsolete, and purges this information if that's the case.
+ *
+ * Returns true if the orig_node is to be removed, false otherwise.
+ */
 static bool batadv_purge_orig_node(struct batadv_priv *bat_priv,
 				   struct batadv_orig_node *orig_node)
 {
 	struct batadv_neigh_node *best_neigh_node;
+	struct batadv_hard_iface *hard_iface;
+	bool changed;
 
 	if (batadv_has_timed_out(orig_node->last_seen,
 				 2 * BATADV_PURGE_TIMEOUT)) {
@@ -444,12 +825,39 @@ static bool batadv_purge_orig_node(struct batadv_priv *bat_priv,
 			   orig_node->orig,
 			   jiffies_to_msecs(orig_node->last_seen));
 		return true;
-	} else {
-		if (batadv_purge_orig_neighbors(bat_priv, orig_node,
-						&best_neigh_node))
-			batadv_update_route(bat_priv, orig_node,
-					    best_neigh_node);
 	}
+	changed = batadv_purge_orig_ifinfo(bat_priv, orig_node);
+	changed = changed || batadv_purge_orig_neighbors(bat_priv, orig_node);
+
+	if (!changed)
+		return false;
+
+	/* first for NULL ... */
+	best_neigh_node = batadv_find_best_neighbor(bat_priv, orig_node,
+						    BATADV_IF_DEFAULT);
+	batadv_update_route(bat_priv, orig_node, BATADV_IF_DEFAULT,
+			    best_neigh_node);
+	if (best_neigh_node)
+		batadv_neigh_node_free_ref(best_neigh_node);
+
+	/* ... then for all other interfaces. */
+	rcu_read_lock();
+	list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) {
+		if (hard_iface->if_status != BATADV_IF_ACTIVE)
+			continue;
+
+		if (hard_iface->soft_iface != bat_priv->soft_iface)
+			continue;
+
+		best_neigh_node = batadv_find_best_neighbor(bat_priv,
+							    orig_node,
+							    hard_iface);
+		batadv_update_route(bat_priv, orig_node, hard_iface,
+				    best_neigh_node);
+		if (best_neigh_node)
+			batadv_neigh_node_free_ref(best_neigh_node);
+	}
+	rcu_read_unlock();
 
 	return false;
 }
@@ -532,8 +940,54 @@ int batadv_orig_seq_print_text(struct seq_file *seq, void *offset)
 		return 0;
 	}
 
-	bat_priv->bat_algo_ops->bat_orig_print(bat_priv, seq);
+	bat_priv->bat_algo_ops->bat_orig_print(bat_priv, seq,
+					       BATADV_IF_DEFAULT);
+
+	return 0;
+}
+
+/**
+ * batadv_orig_hardif_seq_print_text - writes originator infos for a specific
+ *  outgoing interface
+ * @seq: debugfs table seq_file struct
+ * @offset: not used
+ *
+ * Returns 0
+ */
+int batadv_orig_hardif_seq_print_text(struct seq_file *seq, void *offset)
+{
+	struct net_device *net_dev = (struct net_device *)seq->private;
+	struct batadv_hard_iface *hard_iface;
+	struct batadv_priv *bat_priv;
+
+	hard_iface = batadv_hardif_get_by_netdev(net_dev);
+
+	if (!hard_iface || !hard_iface->soft_iface) {
+		seq_puts(seq, "Interface not known to B.A.T.M.A.N.\n");
+		goto out;
+	}
+
+	bat_priv = netdev_priv(hard_iface->soft_iface);
+	if (!bat_priv->bat_algo_ops->bat_orig_print) {
+		seq_puts(seq,
+			 "No printing function for this routing protocol\n");
+		goto out;
+	}
+
+	if (hard_iface->if_status != BATADV_IF_ACTIVE) {
+		seq_puts(seq, "Interface not active\n");
+		goto out;
+	}
 
+	seq_printf(seq, "[B.A.T.M.A.N. adv %s, IF/MAC: %s/%pM (%s %s)]\n",
+		   BATADV_SOURCE_VERSION, hard_iface->net_dev->name,
+		   hard_iface->net_dev->dev_addr,
+		   hard_iface->soft_iface->name, bat_priv->bat_algo_ops->name);
+
+	bat_priv->bat_algo_ops->bat_orig_print(bat_priv, seq, hard_iface);
+
+out:
+	batadv_hardif_free_ref(hard_iface);
 	return 0;
 }
 

net/batman-adv/originator.h

-/* Copyright (C) 2007-2013 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2007-2014 B.A.T.M.A.N. contributors:
  *
  * Marek Lindner, Simon Wunderlich
  *
@@ -34,8 +34,26 @@ batadv_neigh_node_new(struct batadv_hard_iface *hard_iface,
 		      struct batadv_orig_node *orig_node);
 void batadv_neigh_node_free_ref(struct batadv_neigh_node *neigh_node);
 struct batadv_neigh_node *
-batadv_orig_node_get_router(struct batadv_orig_node *orig_node);
+batadv_orig_router_get(struct batadv_orig_node *orig_node,
+		       const struct batadv_hard_iface *if_outgoing);
+struct batadv_neigh_ifinfo *
+batadv_neigh_ifinfo_new(struct batadv_neigh_node *neigh,
+			struct batadv_hard_iface *if_outgoing);
+struct batadv_neigh_ifinfo *
+batadv_neigh_ifinfo_get(struct batadv_neigh_node *neigh,
+			struct batadv_hard_iface *if_outgoing);
+void batadv_neigh_ifinfo_free_ref(struct batadv_neigh_ifinfo *neigh_ifinfo);
+
+struct batadv_orig_ifinfo *
+batadv_orig_ifinfo_get(struct batadv_orig_node *orig_node,
+		       struct batadv_hard_iface *if_outgoing);
+struct batadv_orig_ifinfo *
+batadv_orig_ifinfo_new(struct batadv_orig_node *orig_node,
+		       struct batadv_hard_iface *if_outgoing);
+void batadv_orig_ifinfo_free_ref(struct batadv_orig_ifinfo *orig_ifinfo);
+
 int batadv_orig_seq_print_text(struct seq_file *seq, void *offset);
+int batadv_orig_hardif_seq_print_text(struct seq_file *seq, void *offset);
 int batadv_orig_hash_add_if(struct batadv_hard_iface *hard_iface,
 			    int max_if_num);
 int batadv_orig_hash_del_if(struct batadv_hard_iface *hard_iface,

net/batman-adv/packet.h

-/* Copyright (C) 2007-2013 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2007-2014 B.A.T.M.A.N. contributors:
  *
  * Marek Lindner, Simon Wunderlich
  *

net/batman-adv/routing.c

-/* Copyright (C) 2007-2013 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2007-2014 B.A.T.M.A.N. contributors:
  *
  * Marek Lindner, Simon Wunderlich
  *
@@ -33,13 +33,32 @@
 static int batadv_route_unicast_packet(struct sk_buff *skb,
 				       struct batadv_hard_iface *recv_if);
 
+/**
+ * _batadv_update_route - set the router for this originator
+ * @bat_priv: the bat priv with all the soft interface information
+ * @orig_node: orig node which is to be configured
+ * @recv_if: the receive interface for which this route is set
+ * @neigh_node: neighbor which should be the next router
+ *
+ * This function does not perform any error checks
+ */
 static void _batadv_update_route(struct batadv_priv *bat_priv,
 				 struct batadv_orig_node *orig_node,
+				 struct batadv_hard_iface *recv_if,
 				 struct batadv_neigh_node *neigh_node)
 {
+	struct batadv_orig_ifinfo *orig_ifinfo;
 	struct batadv_neigh_node *curr_router;
 
-	curr_router = batadv_orig_node_get_router(orig_node);
+	orig_ifinfo = batadv_orig_ifinfo_get(orig_node, recv_if);
+	if (!orig_ifinfo)
+		return;
+
+	rcu_read_lock();
+	curr_router = rcu_dereference(orig_ifinfo->router);
+	if (curr_router && !atomic_inc_not_zero(&curr_router->refcount))
+		curr_router = NULL;
+	rcu_read_unlock();
 
 	/* route deleted */
 	if ((curr_router) && (!neigh_node)) {
@@ -69,16 +88,25 @@ static void _batadv_update_route(struct batadv_priv *bat_priv,
 		neigh_node = NULL;
 
 	spin_lock_bh(&orig_node->neigh_list_lock);
-	rcu_assign_pointer(orig_node->router, neigh_node);
+	rcu_assign_pointer(orig_ifinfo->router, neigh_node);
 	spin_unlock_bh(&orig_node->neigh_list_lock);
+	batadv_orig_ifinfo_free_ref(orig_ifinfo);
 
 	/* decrease refcount of previous best neighbor */
 	if (curr_router)
 		batadv_neigh_node_free_ref(curr_router);
 }
 
+/**
+ * batadv_update_route - set the router for this originator
+ * @bat_priv: the bat priv with all the soft interface information
+ * @orig_node: orig node which is to be configured
+ * @recv_if: the receive interface for which this route is set
+ * @neigh_node: neighbor which should be the next router
+ */
 void batadv_update_route(struct batadv_priv *bat_priv,
 			 struct batadv_orig_node *orig_node,
+			 struct batadv_hard_iface *recv_if,
 			 struct batadv_neigh_node *neigh_node)
 {
 	struct batadv_neigh_node *router = NULL;
@@ -86,125 +114,16 @@ void batadv_update_route(struct batadv_priv *bat_priv,
 	if (!orig_node)
 		goto out;
 
-	router = batadv_orig_node_get_router(orig_node);
+	router = batadv_orig_router_get(orig_node, recv_if);
 
 	if (router != neigh_node)
-		_batadv_update_route(bat_priv, orig_node, neigh_node);
+		_batadv_update_route(bat_priv, orig_node, recv_if, neigh_node);
 
 out:
 	if (router)
 		batadv_neigh_node_free_ref(router);
 }
 
-/* caller must hold the neigh_list_lock */
-void batadv_bonding_candidate_del(struct batadv_orig_node *orig_node,
-				  struct batadv_neigh_node *neigh_node)
-{
-	/* this neighbor is not part of our candidate list */
-	if (list_empty(&neigh_node->bonding_list))
-		goto out;
-
-	list_del_rcu(&neigh_node->bonding_list);
-	INIT_LIST_HEAD(&neigh_node->bonding_list);
-	batadv_neigh_node_free_ref(neigh_node);
-	atomic_dec(&orig_node->bond_candidates);
-
-out:
-	return;
-}
-
-/**
- * batadv_bonding_candidate_add - consider a new link for bonding mode towards
- *  the given originator
- * @bat_priv: the bat priv with all the soft interface information
- * @orig_node: the target node
- * @neigh_node: the neighbor representing the new link to consider for bonding
- *  mode
- */
-void batadv_bonding_candidate_add(struct batadv_priv *bat_priv,
-				  struct batadv_orig_node *orig_node,
-				  struct batadv_neigh_node *neigh_node)
-{
-	struct batadv_algo_ops *bao = bat_priv->bat_algo_ops;
-	struct batadv_neigh_node *tmp_neigh_node, *router = NULL;
-	uint8_t interference_candidate = 0;
-
-	spin_lock_bh(&orig_node->neigh_list_lock);
-
-	/* only consider if it has the same primary address ...  */
-	if (!batadv_compare_eth(orig_node->orig,
-				neigh_node->orig_node->primary_addr))
-		goto candidate_del;
-
-	router = batadv_orig_node_get_router(orig_node);
-	if (!router)
-		goto candidate_del;
-
-
-	/* ... and is good enough to be considered */
-	if (bao->bat_neigh_is_equiv_or_better(neigh_node, router))
-		goto candidate_del;
-
-	/* check if we have another candidate with the same mac address or
-	 * interface. If we do, we won't select this candidate because of
-	 * possible interference.
-	 */
-	hlist_for_each_entry_rcu(tmp_neigh_node,
-				 &orig_node->neigh_list, list) {
-		if (tmp_neigh_node == neigh_node)
-			continue;
-
-		/* we only care if the other candidate is even
-		 * considered as candidate.
-		 */
-		if (list_empty(&tmp_neigh_node->bonding_list))
-			continue;
-
-		if ((neigh_node->if_incoming == tmp_neigh_node->if_incoming) ||
-		    (batadv_compare_eth(neigh_node->addr,
-					tmp_neigh_node->addr))) {
-			interference_candidate = 1;
-			break;
-		}
-	}
-
-	/* don't care further if it is an interference candidate */
-	if (interference_candidate)
-		goto candidate_del;
-
-	/* this neighbor already is part of our candidate list */
-	if (!list_empty(&neigh_node->bonding_list))
-		goto out;
-
-	if (!atomic_inc_not_zero(&neigh_node->refcount))
-		goto out;
-
-	list_add_rcu(&neigh_node->bonding_list, &orig_node->bond_list);
-	atomic_inc(&orig_node->bond_candidates);
-	goto out;
-
-candidate_del:
-	batadv_bonding_candidate_del(orig_node, neigh_node);
-
-out:
-	spin_unlock_bh(&orig_node->neigh_list_lock);
-
-	if (router)
-		batadv_neigh_node_free_ref(router);
-}
-
-/* copy primary address for bonding */
-void
-batadv_bonding_save_primary(const struct batadv_orig_node *orig_node,
-			    struct batadv_orig_node *orig_neigh_node,
-			    const struct batadv_ogm_packet *batman_ogm_packet)
-{
-	if (!(batman_ogm_packet->flags & BATADV_PRIMARIES_FIRST_HOP))
-		return;
-
-	memcpy(orig_neigh_node->primary_addr, orig_node->orig, ETH_ALEN);
-}
-
 /* checks whether the host restarted and is in the protection time.
  * returns:
  *  0 if the packet is to be accepted
@@ -459,114 +378,6 @@ int batadv_recv_icmp_packet(struct sk_buff *skb,
 	return ret;
 }
 
-/* In the bonding case, send the packets in a round
- * robin fashion over the remaining interfaces.
- *
- * This method rotates the bonding list and increases the
- * returned router's refcount.
- */
-static struct batadv_neigh_node *
-batadv_find_bond_router(struct batadv_orig_node *primary_orig,
-			const struct batadv_hard_iface *recv_if)
-{
-	struct batadv_neigh_node *tmp_neigh_node;
-	struct batadv_neigh_node *router = NULL, *first_candidate = NULL;
-
-	rcu_read_lock();
-	list_for_each_entry_rcu(tmp_neigh_node, &primary_orig->bond_list,
-				bonding_list) {
-		if (!first_candidate)
-			first_candidate = tmp_neigh_node;
-
-		/* recv_if == NULL on the first node. */
-		if (tmp_neigh_node->if_incoming == recv_if)
-			continue;
-
-		if (!atomic_inc_not_zero(&tmp_neigh_node->refcount))
-			continue;
-
-		router = tmp_neigh_node;
-		break;
-	}
-
-	/* use the first candidate if nothing was found. */
-	if (!router && first_candidate &&
-	    atomic_inc_not_zero(&first_candidate->refcount))
-		router = first_candidate;
-
-	if (!router)
-		goto out;
-
-	/* selected should point to the next element
-	 * after the current router
-	 */
-	spin_lock_bh(&primary_orig->neigh_list_lock);
-	/* this is a list_move(), which unfortunately
-	 * does not exist as rcu version
-	 */
-	list_del_rcu(&primary_orig->bond_list);
-	list_add_rcu(&primary_orig->bond_list,
-		     &router->bonding_list);
-	spin_unlock_bh(&primary_orig->neigh_list_lock);
-
-out:
-	rcu_read_unlock();
-	return router;
-}
-
-/**
- * batadv_find_ifalter_router - find the best of the remaining candidates which
- *  are not using this interface
- * @bat_priv: the bat priv with all the soft interface information
- * @primary_orig: the destination
- * @recv_if: the interface that the router returned by this function has to not
- *  use
- *
- * Returns the best candidate towards primary_orig that is not using recv_if.
- * Increases the returned neighbor's refcount
- */
-static struct batadv_neigh_node *
-batadv_find_ifalter_router(struct batadv_priv *bat_priv,
-			   struct batadv_orig_node *primary_orig,
-			   const struct batadv_hard_iface *recv_if)
-{
-	struct batadv_neigh_node *router = NULL, *first_candidate = NULL;
-	struct batadv_algo_ops *bao = bat_priv->bat_algo_ops;
-	struct batadv_neigh_node *tmp_neigh_node;
-
-	rcu_read_lock();
-	list_for_each_entry_rcu(tmp_neigh_node, &primary_orig->bond_list,
-				bonding_list) {
-		if (!first_candidate)
-			first_candidate = tmp_neigh_node;
-
-		/* recv_if == NULL on the first node. */
-		if (tmp_neigh_node->if_incoming == recv_if)
-			continue;
-
-		if (router && bao->bat_neigh_cmp(tmp_neigh_node, router))
-			continue;
-
-		if (!atomic_inc_not_zero(&tmp_neigh_node->refcount))
-			continue;
-
-		/* decrement refcount of previously selected router */
-		if (router)
-			batadv_neigh_node_free_ref(router);
-
-		/* we found a better router (or at least one valid router) */
-		router = tmp_neigh_node;
-	}
-
-	/* use the first candidate if nothing was found. */
-	if (!router && first_candidate &&
-	    atomic_inc_not_zero(&first_candidate->refcount))
-		router = first_candidate;
-
-	rcu_read_unlock();
-	return router;
-}
-
 /**
  * batadv_check_unicast_packet - Check for malformed unicast packets
  * @bat_priv: the bat priv with all the soft interface information
@@ -604,95 +415,141 @@ static int batadv_check_unicast_packet(struct batadv_priv *bat_priv,
 	return 0;
 }
 
-/* find a suitable router for this originator, and use
- * bonding if possible. increases the found neighbors
- * refcount.
+/**
+ * batadv_find_router - find a suitable router for this originator
+ * @bat_priv: the bat priv with all the soft interface information
+ * @orig_node: the destination node
+ * @recv_if: pointer to interface this packet was received on
+ *
+ * Returns the router which should be used for this orig_node on
+ * this interface, or NULL if not available.
  */
 struct batadv_neigh_node *
 batadv_find_router(struct batadv_priv *bat_priv,
 		   struct batadv_orig_node *orig_node,
-		   const struct batadv_hard_iface *recv_if)
+		   struct batadv_hard_iface *recv_if)
 {
-	struct batadv_orig_node *primary_orig_node;
-	struct batadv_orig_node *router_orig;
-	struct batadv_neigh_node *router;
-	static uint8_t zero_mac[ETH_ALEN] = {0, 0, 0, 0, 0, 0};
-	int bonding_enabled;
-	uint8_t *primary_addr;
+	struct batadv_algo_ops *bao = bat_priv->bat_algo_ops;
+	struct batadv_neigh_node *first_candidate_router = NULL;
+	struct batadv_neigh_node *next_candidate_router = NULL;
+	struct batadv_neigh_node *router, *cand_router = NULL;
+	struct batadv_neigh_node *last_cand_router = NULL;
+	struct batadv_orig_ifinfo *cand, *first_candidate = NULL;
+	struct batadv_orig_ifinfo *next_candidate = NULL;
+	struct batadv_orig_ifinfo *last_candidate;
+	bool last_candidate_found = false;
 
 	if (!orig_node)
 		return NULL;
 
-	router = batadv_orig_node_get_router(orig_node);
-	if (!router)
-		goto err;
+	router = batadv_orig_router_get(orig_node, recv_if);
 
-	/* without bonding, the first node should
-	 * always choose the default router.
+	/* only consider bonding for recv_if == BATADV_IF_DEFAULT (first hop)
+	 * and if activated.
+	 */
+	if (recv_if == BATADV_IF_DEFAULT || !atomic_read(&bat_priv->bonding) ||
+	    !router)
+		return router;
+
+	/* bonding: loop through the list of possible routers found
+	 * for the various outgoing interfaces and find a candidate after
+	 * the last chosen bonding candidate (next_candidate). If no such
+	 * router is found, use the first candidate found (the previously
+	 * chosen bonding candidate might have been the last one in the list).
+	 * If this can't be found either, return the previously choosen
+	 * router - obviously there are no other candidates.
 	 */
-	bonding_enabled = atomic_read(&bat_priv->bonding);
-
 	rcu_read_lock();
-	/* select default router to output */
-	router_orig = router->orig_node;
-	if (!router_orig)
-		goto err_unlock;
+	last_candidate = orig_node->last_bonding_candidate;
+	if (last_candidate)
+		last_cand_router = rcu_dereference(last_candidate->router);
 
-	if ((!recv_if) && (!bonding_enabled))
-		goto return_router;
+	hlist_for_each_entry_rcu(cand, &orig_node->ifinfo_list, list) {
+		/* acquire some structures and references ... */
+		if (!atomic_inc_not_zero(&cand->refcount))
+			continue;
 
-	primary_addr = router_orig->primary_addr;
+		cand_router = rcu_dereference(cand->router);
+		if (!cand_router)
+			goto next;
 
-	/* if we have something in the primary_addr, we can search
-	 * for a potential bonding candidate.
-	 */
-	if (batadv_compare_eth(primary_addr, zero_mac))
-		goto return_router;
+		if (!atomic_inc_not_zero(&cand_router->refcount)) {
+			cand_router = NULL;
+			goto next;
+		}
 
-	/* find the orig_node which has the primary interface. might
-	 * even be the same as our router_orig in many cases
-	 */
-	if (batadv_compare_eth(primary_addr, router_orig->orig)) {
-		primary_orig_node = router_orig;
-	} else {
-		primary_orig_node = batadv_orig_hash_find(bat_priv,
-							  primary_addr);
-		if (!primary_orig_node)
-			goto return_router;
+		/* alternative candidate should be good enough to be
+		 * considered
+		 */
+		if (!bao->bat_neigh_is_equiv_or_better(cand_router,
+						       cand->if_outgoing,
+						       router, recv_if))
+			goto next;
+
+		/* don't use the same router twice */
+		if (last_cand_router == cand_router)
+			goto next;
+
+		/* mark the first possible candidate */
+		if (!first_candidate) {
+			atomic_inc(&cand_router->refcount);
+			atomic_inc(&cand->refcount);
+			first_candidate = cand;
+			first_candidate_router = cand_router;
+		}
+
+		/* check if the loop has already passed the previously selected
+		 * candidate ... this function should select the next candidate
+		 * AFTER the previously used bonding candidate.
+		 */
+		if (!last_candidate || last_candidate_found) {
+			next_candidate = cand;
+			next_candidate_router = cand_router;
+			break;
+		}
 
-		batadv_orig_node_free_ref(primary_orig_node);
+		if (last_candidate == cand)
+			last_candidate_found = true;
+next:
+		/* free references */
+		if (cand_router) {
+			batadv_neigh_node_free_ref(cand_router);
+			cand_router = NULL;
+		}
+		batadv_orig_ifinfo_free_ref(cand);
 	}
+	rcu_read_unlock();
 
-	/* with less than 2 candidates, we can't do any
-	 * bonding and prefer the original router.
-	 */
-	if (atomic_read(&primary_orig_node->bond_candidates) < 2)
-		goto return_router;
+	/* last_bonding_candidate is reset below, remove the old reference. */
+	if (orig_node->last_bonding_candidate)
+		batadv_orig_ifinfo_free_ref(orig_node->last_bonding_candidate);
 
-	/* all nodes between should choose a candidate which
-	 * is is not on the interface where the packet came
-	 * in.
+	/* After finding candidates, handle the three cases:
+	 * 1) there is a next candidate, use that
+	 * 2) there is no next candidate, use the first of the list
+	 * 3) there is no candidate at all, return the default router
 	 */
-	batadv_neigh_node_free_ref(router);
+	if (next_candidate) {
+		batadv_neigh_node_free_ref(router);
 
-	if (bonding_enabled)
-		router = batadv_find_bond_router(primary_orig_node, recv_if);
-	else
-		router = batadv_find_ifalter_router(bat_priv, primary_orig_node,
-						    recv_if);
+		/* remove references to first candidate, we don't need it. */
+		if (first_candidate) {
+			batadv_neigh_node_free_ref(first_candidate_router);
+			batadv_orig_ifinfo_free_ref(first_candidate);
+		}
+		router = next_candidate_router;
+		orig_node->last_bonding_candidate = next_candidate;
+	} else if (first_candidate) {
+		batadv_neigh_node_free_ref(router);
 
-return_router:
-	if (router && router->if_incoming->if_status != BATADV_IF_ACTIVE)
-		goto err_unlock;
+		/* refcounting has already been done in the loop above. */
+		router = first_candidate_router;
+		orig_node->last_bonding_candidate = first_candidate;
+	} else {
+		orig_node->last_bonding_candidate = NULL;
+	}
 
-	rcu_read_unlock();
 	return router;
-err_unlock:
-	rcu_read_unlock();
-err:
-	if (router)
-		batadv_neigh_node_free_ref(router);
-	return NULL;
 }
 
 static int batadv_route_unicast_packet(struct sk_buff *skb,

net/batman-adv/routing.h

-/* Copyright (C) 2007-2013 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2007-2014 B.A.T.M.A.N. contributors:
  *
  * Marek Lindner, Simon Wunderlich
  *
@@ -23,6 +23,7 @@ bool batadv_check_management_packet(struct sk_buff *skb,
 				    int header_len);
 void batadv_update_route(struct batadv_priv *bat_priv,
 			 struct batadv_orig_node *orig_node,
+			 struct batadv_hard_iface *recv_if,
 			 struct batadv_neigh_node *neigh_node);
 int batadv_recv_icmp_packet(struct sk_buff *skb,
 			    struct batadv_hard_iface *recv_if);
@@ -43,16 +44,7 @@ int batadv_recv_unhandled_unicast_packet(struct sk_buff *skb,
 struct batadv_neigh_node *
 batadv_find_router(struct batadv_priv *bat_priv,
 		   struct batadv_orig_node *orig_node,
-		   const struct batadv_hard_iface *recv_if);
-void batadv_bonding_candidate_del(struct batadv_orig_node *orig_node,
-				  struct batadv_neigh_node *neigh_node);
-void batadv_bonding_candidate_add(struct batadv_priv *bat_priv,
-				  struct batadv_orig_node *orig_node,
-				  struct batadv_neigh_node *neigh_node);
-void batadv_bonding_save_primary(const struct batadv_orig_node *orig_node,
-				 struct batadv_orig_node *orig_neigh_node,
-				 const struct batadv_ogm_packet
-				 *batman_ogm_packet);
+		   struct batadv_hard_iface *recv_if);
 int batadv_window_protected(struct batadv_priv *bat_priv, int32_t seq_num_diff,
 			    unsigned long *last_reset);
 

net/batman-adv/send.c

-/* Copyright (C) 2007-2013 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2007-2014 B.A.T.M.A.N. contributors:
  *
  * Marek Lindner, Simon Wunderlich
  *
@@ -387,6 +387,8 @@ static void batadv_forw_packet_free(struct batadv_forw_packet *forw_packet)
 		kfree_skb(forw_packet->skb);
 	if (forw_packet->if_incoming)
 		batadv_hardif_free_ref(forw_packet->if_incoming);
+	if (forw_packet->if_outgoing)
+		batadv_hardif_free_ref(forw_packet->if_outgoing);
 	kfree(forw_packet);
 }
 
@@ -450,6 +452,7 @@ int batadv_add_bcast_packet_to_list(struct batadv_priv *bat_priv,
 
 	forw_packet->skb = newskb;
 	forw_packet->if_incoming = primary_if;
+	forw_packet->if_outgoing = NULL;
 
 	/* how often did we send the bcast packet ? */
 	forw_packet->num_packets = 0;
@@ -545,11 +548,16 @@ void batadv_send_outstanding_bat_ogm_packet(struct work_struct *work)
 
 	bat_priv->bat_algo_ops->bat_ogm_emit(forw_packet);
 
-	/* we have to have at least one packet in the queue
-	 * to determine the queues wake up time unless we are
-	 * shutting down
+	/* we have to have at least one packet in the queue to determine the
+	 * queues wake up time unless we are shutting down.
+	 *
+	 * only re-schedule if this is the "original" copy, e.g. the OGM of the
+	 * primary interface should only be rescheduled once per period, but
+	 * this function will be called for the forw_packet instances of the
+	 * other secondary interfaces as well.
 	 */
-	if (forw_packet->own)
+	if (forw_packet->own &&
+	    forw_packet->if_incoming == forw_packet->if_outgoing)
 		batadv_schedule_bat_ogm(forw_packet->if_incoming);
 
 out:
@@ -610,7 +618,8 @@ batadv_purge_outstanding_packets(struct batadv_priv *bat_priv,
 		 * we delete only packets belonging to the given interface
 		 */
 		if ((hard_iface) &&
-		    (forw_packet->if_incoming != hard_iface))
+		    (forw_packet->if_incoming != hard_iface) &&
+		    (forw_packet->if_outgoing != hard_iface))
 			continue;
 
 		spin_unlock_bh(&bat_priv->forw_bat_list_lock);

net/batman-adv/send.h

-/* Copyright (C) 2007-2013 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2007-2014 B.A.T.M.A.N. contributors:
  *
  * Marek Lindner, Simon Wunderlich
  *

net/batman-adv/soft-interface.c

-/* Copyright (C) 2007-2013 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2007-2014 B.A.T.M.A.N. contributors:
  *
  * Marek Lindner, Simon Wunderlich
  *
@@ -697,7 +697,7 @@ static int batadv_softif_init_late(struct net_device *dev)
 	atomic_set(&bat_priv->gw.bandwidth_down, 100);
 	atomic_set(&bat_priv->gw.bandwidth_up, 20);
 	atomic_set(&bat_priv->orig_interval, 1000);
-	atomic_set(&bat_priv->hop_penalty, 30);
+	atomic_set(&bat_priv->hop_penalty, 15);
 #ifdef CONFIG_BATMAN_ADV_DEBUG
 	atomic_set(&bat_priv->log_level, 0);
 #endif

net/batman-adv/soft-interface.h

-/* Copyright (C) 2007-2013 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2007-2014 B.A.T.M.A.N. contributors:
  *
  * Marek Lindner
  *

net/batman-adv/sysfs.c

-/* Copyright (C) 2010-2013 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2010-2014 B.A.T.M.A.N. contributors:
  *
  * Marek Lindner
  *

net/batman-adv/sysfs.h

-/* Copyright (C) 2010-2013 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2010-2014 B.A.T.M.A.N. contributors:
  *
  * Marek Lindner
  *

net/batman-adv/translation-table.c

-/* Copyright (C) 2007-2013 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2007-2014 B.A.T.M.A.N. contributors:
  *
  * Marek Lindner, Simon Wunderlich, Antonio Quartulli
  *
@@ -1400,12 +1400,14 @@ batadv_transtable_best_orig(struct batadv_priv *bat_priv,
 
 	head = &tt_global_entry->orig_list;
 	hlist_for_each_entry_rcu(orig_entry, head, list) {
-		router = batadv_orig_node_get_router(orig_entry->orig_node);
+		router = batadv_orig_router_get(orig_entry->orig_node,
+						BATADV_IF_DEFAULT);
 		if (!router)
 			continue;
 
 		if (best_router &&
-		    bao->bat_neigh_cmp(router, best_router) <= 0) {
+		    bao->bat_neigh_cmp(router, BATADV_IF_DEFAULT,
+				       best_router, BATADV_IF_DEFAULT) <= 0) {
 			batadv_neigh_node_free_ref(router);
 			continue;
 		}

net/batman-adv/translation-table.h

-/* Copyright (C) 2007-2013 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2007-2014 B.A.T.M.A.N. contributors:
  *
  * Marek Lindner, Simon Wunderlich, Antonio Quartulli
  *

net/batman-adv/types.h

-/* Copyright (C) 2007-2013 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2007-2014 B.A.T.M.A.N. contributors:
  *
  * Marek Lindner, Simon Wunderlich
  *
@@ -84,6 +84,7 @@ struct batadv_hard_iface_bat_iv {
  * @rcu: struct used for freeing in an RCU-safe manner
  * @bat_iv: BATMAN IV specific per hard interface data
  * @cleanup_work: work queue callback item for hard interface deinit
+ * @debug_dir: dentry for nc subdir in batman-adv directory in debugfs
  */
 struct batadv_hard_iface {
 	struct list_head list;
@@ -98,6 +99,29 @@ struct batadv_hard_iface {
 	struct rcu_head rcu;
 	struct batadv_hard_iface_bat_iv bat_iv;
 	struct work_struct cleanup_work;
+	struct dentry *debug_dir;
+};
+
+/**
+ * struct batadv_orig_ifinfo - originator info per outgoing interface
+ * @list: list node for orig_node::ifinfo_list
+ * @if_outgoing: pointer to outgoing hard interface
+ * @router: router that should be used to reach this originator
+ * @last_real_seqno: last and best known sequence number
+ * @last_ttl: ttl of last received packet
+ * @batman_seqno_reset: time when the batman seqno window was reset
+ * @refcount: number of contexts the object is used
+ * @rcu: struct used for freeing in an RCU-safe manner
+ */
+struct batadv_orig_ifinfo {
+	struct hlist_node list;
+	struct batadv_hard_iface *if_outgoing;
+	struct batadv_neigh_node __rcu *router; /* rcu protected pointer */
+	uint32_t last_real_seqno;
+	uint8_t last_ttl;
+	unsigned long batman_seqno_reset;
+	atomic_t refcount;
+	struct rcu_head rcu;
 };
 
 /**
@@ -175,11 +199,11 @@ struct batadv_orig_bat_iv {
  * struct batadv_orig_node - structure for orig_list maintaining nodes of mesh
  * @orig: originator ethernet address
  * @primary_addr: hosts primary interface address
- * @router: router that should be used to reach this originator
+ * @ifinfo_list: list for routers per outgoing interface
+ * @last_bonding_candidate: pointer to last ifinfo of last used router
  * @batadv_dat_addr_t:  address of the orig node in the distributed hash
  * @last_seen: time when last packet from this node was received
  * @bcast_seqno_reset: time when the broadcast seqno window was reset
- * @batman_seqno_reset: time when the batman seqno window was reset
  * @capabilities: announced capabilities of this originator
  * @last_ttvn: last seen translation table version number
  * @tt_buff: last tt changeset this node received from the orig node
@@ -192,19 +216,15 @@ struct batadv_orig_bat_iv {
  *  made up by two operations (data structure update and metdata -CRC/TTVN-
  *  recalculation) and they have to be executed atomically in order to avoid
  *  another thread to read the table/metadata between those.
- * @last_real_seqno: last and best known sequence number
- * @last_ttl: ttl of last received packet
  * @bcast_bits: bitfield containing the info which payload broadcast originated
  *  from this orig node this host already has seen (relative to
  *  last_bcast_seqno)
  * @last_bcast_seqno: last broadcast sequence number received by this host
  * @neigh_list: list of potential next hop neighbor towards this orig node
- * @neigh_list_lock: lock protecting neigh_list, router and bonding_list
+ * @neigh_list_lock: lock protecting neigh_list and router
  * @hash_entry: hlist node for batadv_priv::orig_hash
  * @bat_priv: pointer to soft_iface this orig node belongs to
  * @bcast_seqno_lock: lock protecting bcast_bits & last_bcast_seqno
- * @bond_candidates: how many candidates are available
- * @bond_list: list of bonding candidates
  * @refcount: number of contexts the object is used
  * @rcu: struct used for freeing in an RCU-safe manner
  * @in_coding_list: list of nodes this orig can hear
@@ -220,13 +240,13 @@ struct batadv_orig_bat_iv {
 struct batadv_orig_node {
 	uint8_t orig[ETH_ALEN];
 	uint8_t primary_addr[ETH_ALEN];
-	struct batadv_neigh_node __rcu *router; /* rcu protected pointer */
+	struct hlist_head ifinfo_list;
+	struct batadv_orig_ifinfo *last_bonding_candidate;
 #ifdef CONFIG_BATMAN_ADV_DAT
 	batadv_dat_addr_t dat_addr;
 #endif
 	unsigned long last_seen;
 	unsigned long bcast_seqno_reset;
-	unsigned long batman_seqno_reset;
 	uint8_t capabilities;
 	atomic_t last_ttvn;
 	unsigned char *tt_buff;
@@ -235,19 +255,15 @@ struct batadv_orig_node {
 	bool tt_initialised;
 	/* prevents from changing the table while reading it */
 	spinlock_t tt_lock;
-	uint32_t last_real_seqno;
-	uint8_t last_ttl;
 	DECLARE_BITMAP(bcast_bits, BATADV_TQ_LOCAL_WINDOW_SIZE);
 	uint32_t last_bcast_seqno;
 	struct hlist_head neigh_list;
-	/* neigh_list_lock protects: neigh_list, router & bonding_list */
+	/* neigh_list_lock protects: neigh_list and router */
 	spinlock_t neigh_list_lock;
 	struct hlist_node hash_entry;
 	struct batadv_priv *bat_priv;
 	/* bcast_seqno_lock protects: bcast_bits & last_bcast_seqno */
 	spinlock_t bcast_seqno_lock;
-	atomic_t bond_candidates;
-	struct list_head bond_list;
 	atomic_t refcount;
 	struct rcu_head rcu;
 #ifdef CONFIG_BATMAN_ADV_NC
@@ -293,49 +309,62 @@ struct batadv_gw_node {
 };
 
 /**
- * struct batadv_neigh_bat_iv - B.A.T.M.A.N. IV specific structure for single
- *  hop neighbors
+ * struct batadv_neigh_node - structure for single hops neighbors
+ * @list: list node for batadv_orig_node::neigh_list
+ * @orig_node: pointer to corresponding orig_node
+ * @addr: the MAC address of the neighboring interface
+ * @ifinfo_list: list for routing metrics per outgoing interface
+ * @ifinfo_lock: lock protecting private ifinfo members and list
+ * @if_incoming: pointer to incoming hard interface
+ * @last_seen: when last packet via this neighbor was received
+ * @last_ttl: last received ttl from this neigh node
+ * @rcu: struct used for freeing in an RCU-safe manner
+ * @bat_iv: B.A.T.M.A.N. IV private structure
+ */
+struct batadv_neigh_node {
+	struct hlist_node list;
+	struct batadv_orig_node *orig_node;
+	uint8_t addr[ETH_ALEN];
+	struct hlist_head ifinfo_list;
+	spinlock_t ifinfo_lock;	/* protects ifinfo_list and its members */
+	struct batadv_hard_iface *if_incoming;
+	unsigned long last_seen;
+	atomic_t refcount;
+	struct rcu_head rcu;
+};
+
+/* struct batadv_neigh_node_bat_iv - neighbor information per outgoing
+ *  interface for BATMAN IV
  * @tq_recv: ring buffer of received TQ values from this neigh node
  * @tq_index: ring buffer index
  * @tq_avg: averaged tq of all tq values in the ring buffer (tq_recv)
  * @real_bits: bitfield containing the number of OGMs received from this neigh
  *  node (relative to orig_node->last_real_seqno)
  * @real_packet_count: counted result of real_bits
- * @lq_update_lock: lock protecting tq_recv & tq_index
  */
-struct batadv_neigh_bat_iv {
+struct batadv_neigh_ifinfo_bat_iv {
 	uint8_t tq_recv[BATADV_TQ_GLOBAL_WINDOW_SIZE];
 	uint8_t tq_index;
 	uint8_t tq_avg;
 	DECLARE_BITMAP(real_bits, BATADV_TQ_LOCAL_WINDOW_SIZE);
 	uint8_t real_packet_count;
-	spinlock_t lq_update_lock; /* protects tq_recv & tq_index */
 };
 
-/**
- * struct batadv_neigh_node - structure for single hops neighbors
- * @list: list node for batadv_orig_node::neigh_list
- * @orig_node: pointer to corresponding orig_node
- * @addr: the MAC address of the neighboring interface
- * @if_incoming: pointer to incoming hard interface
- * @last_seen: when last packet via this neighbor was received
+/* struct batadv_neigh_ifinfo - neighbor information per outgoing interface
+ * @list: list node for batadv_neigh_node::ifinfo_list
+ * @if_outgoing: pointer to outgoing hard interface
+ * @bat_iv: B.A.T.M.A.N. IV private structure
  * @last_ttl: last received ttl from this neigh node
- * @bonding_list: list node for batadv_orig_node::bond_list
  * @refcount: number of contexts the object is used
- * @rcu: struct used for freeing in an RCU-safe manner
- * @bat_iv: B.A.T.M.A.N. IV private structure
+ * @rcu: struct used for freeing in a RCU-safe manner
  */
-struct batadv_neigh_node {
+struct batadv_neigh_ifinfo {
 	struct hlist_node list;
-	struct batadv_orig_node *orig_node;
-	uint8_t addr[ETH_ALEN];
-	struct batadv_hard_iface *if_incoming;
-	unsigned long last_seen;
+	struct batadv_hard_iface *if_outgoing;
+	struct batadv_neigh_ifinfo_bat_iv bat_iv;
 	uint8_t last_ttl;
-	struct list_head bonding_list;
 	atomic_t refcount;
 	struct rcu_head rcu;
-	struct batadv_neigh_bat_iv bat_iv;
 };
 
 /**
@@ -993,8 +1022,10 @@ struct batadv_skb_cb {
  * @direct_link_flags: direct link flags for aggregated OGM packets
  * @num_packets: counter for bcast packet retransmission
  * @delayed_work: work queue callback item for packet sending
- * @if_incoming: pointer incoming hard-iface or primary iface if locally
- *  generated packet
+ * @if_incoming: pointer to incoming hard-iface or primary iface if
+ *  locally generated packet
+ * @if_outgoing: packet where the packet should be sent to, or NULL if
+ *  unspecified
  */
 struct batadv_forw_packet {
 	struct hlist_node list;
@@ -1006,6 +1037,7 @@ struct batadv_forw_packet {
 	uint8_t num_packets;
 	struct delayed_work delayed_work;
 	struct batadv_hard_iface *if_incoming;
+	struct batadv_hard_iface *if_outgoing;
 };
 
 /**
@@ -1019,9 +1051,11 @@ struct batadv_forw_packet {
  * @bat_primary_iface_set: called when primary interface is selected / changed
  * @bat_ogm_schedule: prepare a new outgoing OGM for the send queue
  * @bat_ogm_emit: send scheduled OGM
- * @bat_neigh_cmp: compare the metrics of two neighbors
- * @bat_neigh_is_equiv_or_better: check if neigh1 is equally good or
- *  better than neigh2 from the metric prospective
+ * @bat_neigh_cmp: compare the metrics of two neighbors for their respective
+ *  outgoing interfaces
+ * @bat_neigh_is_equiv_or_better: check if neigh1 is equally good or better
+ *  than neigh2 for their respective outgoing interface from the metric
+ *  prospective
  * @bat_orig_print: print the originator table (optional)
  * @bat_orig_free: free the resources allocated by the routing algorithm for an
  *  orig_node object
@@ -1040,11 +1074,17 @@ struct batadv_algo_ops {
 	void (*bat_ogm_schedule)(struct batadv_hard_iface *hard_iface);
 	void (*bat_ogm_emit)(struct batadv_forw_packet *forw_packet);
 	int (*bat_neigh_cmp)(struct batadv_neigh_node *neigh1,
-			     struct batadv_neigh_node *neigh2);
-	bool (*bat_neigh_is_equiv_or_better)(struct batadv_neigh_node *neigh1,
-					     struct batadv_neigh_node *neigh2);
+			     struct batadv_hard_iface *if_outgoing1,
+			     struct batadv_neigh_node *neigh2,
+			     struct batadv_hard_iface *if_outgoing2);
+	bool (*bat_neigh_is_equiv_or_better)
+		(struct batadv_neigh_node *neigh1,
+		 struct batadv_hard_iface *if_outgoing1,
+		 struct batadv_neigh_node *neigh2,
+		 struct batadv_hard_iface *if_outgoing2);
 	/* orig_node handling API */
-	void (*bat_orig_print)(struct batadv_priv *priv, struct seq_file *seq);
+	void (*bat_orig_print)(struct batadv_priv *priv, struct seq_file *seq,
+			       struct batadv_hard_iface *hard_iface);
 	void (*bat_orig_free)(struct batadv_orig_node *orig_node);
 	int (*bat_orig_add_if)(struct batadv_orig_node *orig_node,
 			       int max_if_num);