// SPDX-License-Identifier: GPL-2.0

  /* Copyright (C) 2007-2018  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, see <http://www.gnu.org/licenses/>.
   */
  
  #include "main.h"
  
  #include <linux/byteorder/generic.h>
  #include <linux/etherdevice.h>

  #include <linux/gfp.h>

  #include <linux/if_ether.h>
  #include <linux/kernel.h>
  #include <linux/kref.h>
  #include <linux/list.h>
  #include <linux/lockdep.h>
  #include <linux/netdevice.h>
  #include <linux/pkt_sched.h>
  #include <linux/rculist.h>
  #include <linux/rcupdate.h>
  #include <linux/skbuff.h>
  #include <linux/slab.h>
  #include <linux/spinlock.h>
  #include <linux/stddef.h>
  #include <linux/string.h>
  #include <linux/types.h>

  #include <uapi/linux/batadv_packet.h>

  
  #include "originator.h"

  #include "send.h"
  #include "tvlv.h"
  
  /**

   * batadv_tvlv_handler_release() - release tvlv handler from lists and queue for

   *  free after rcu grace period
   * @ref: kref pointer of the tvlv
   */
  static void batadv_tvlv_handler_release(struct kref *ref)
  {
  	struct batadv_tvlv_handler *tvlv_handler;
  
  	tvlv_handler = container_of(ref, struct batadv_tvlv_handler, refcount);
  	kfree_rcu(tvlv_handler, rcu);
  }
  
  /**

   * batadv_tvlv_handler_put() - decrement the tvlv container refcounter and

   *  possibly release it
   * @tvlv_handler: the tvlv handler to free
   */
  static void batadv_tvlv_handler_put(struct batadv_tvlv_handler *tvlv_handler)
  {
  	kref_put(&tvlv_handler->refcount, batadv_tvlv_handler_release);
  }
  
  /**

   * batadv_tvlv_handler_get() - retrieve tvlv handler from the tvlv handler list

   *  based on the provided type and version (both need to match)
   * @bat_priv: the bat priv with all the soft interface information
   * @type: tvlv handler type to look for
   * @version: tvlv handler version to look for
   *
   * Return: tvlv handler if found or NULL otherwise.
   */
  static struct batadv_tvlv_handler *
  batadv_tvlv_handler_get(struct batadv_priv *bat_priv, u8 type, u8 version)
  {
  	struct batadv_tvlv_handler *tvlv_handler_tmp, *tvlv_handler = NULL;
  
  	rcu_read_lock();
  	hlist_for_each_entry_rcu(tvlv_handler_tmp,
  				 &bat_priv->tvlv.handler_list, list) {
  		if (tvlv_handler_tmp->type != type)
  			continue;
  
  		if (tvlv_handler_tmp->version != version)
  			continue;
  
  		if (!kref_get_unless_zero(&tvlv_handler_tmp->refcount))
  			continue;
  
  		tvlv_handler = tvlv_handler_tmp;
  		break;
  	}
  	rcu_read_unlock();
  
  	return tvlv_handler;
  }
  
  /**

   * batadv_tvlv_container_release() - release tvlv from lists and free

   * @ref: kref pointer of the tvlv
   */
  static void batadv_tvlv_container_release(struct kref *ref)
  {
  	struct batadv_tvlv_container *tvlv;
  
  	tvlv = container_of(ref, struct batadv_tvlv_container, refcount);
  	kfree(tvlv);
  }
  
  /**

   * batadv_tvlv_container_put() - decrement the tvlv container refcounter and

   *  possibly release it
   * @tvlv: the tvlv container to free
   */
  static void batadv_tvlv_container_put(struct batadv_tvlv_container *tvlv)
  {
  	kref_put(&tvlv->refcount, batadv_tvlv_container_release);
  }
  
  /**

   * batadv_tvlv_container_get() - retrieve tvlv container from the tvlv container

   *  list based on the provided type and version (both need to match)
   * @bat_priv: the bat priv with all the soft interface information
   * @type: tvlv container type to look for
   * @version: tvlv container version to look for
   *
   * Has to be called with the appropriate locks being acquired
   * (tvlv.container_list_lock).
   *
   * Return: tvlv container if found or NULL otherwise.
   */
  static struct batadv_tvlv_container *
  batadv_tvlv_container_get(struct batadv_priv *bat_priv, u8 type, u8 version)
  {
  	struct batadv_tvlv_container *tvlv_tmp, *tvlv = NULL;
  
  	lockdep_assert_held(&bat_priv->tvlv.container_list_lock);
  
  	hlist_for_each_entry(tvlv_tmp, &bat_priv->tvlv.container_list, list) {
  		if (tvlv_tmp->tvlv_hdr.type != type)
  			continue;
  
  		if (tvlv_tmp->tvlv_hdr.version != version)
  			continue;
  
  		kref_get(&tvlv_tmp->refcount);
  		tvlv = tvlv_tmp;
  		break;
  	}
  
  	return tvlv;
  }
  
  /**

   * batadv_tvlv_container_list_size() - calculate the size of the tvlv container

   *  list entries
   * @bat_priv: the bat priv with all the soft interface information
   *
   * Has to be called with the appropriate locks being acquired
   * (tvlv.container_list_lock).
   *
   * Return: size of all currently registered tvlv containers in bytes.
   */
  static u16 batadv_tvlv_container_list_size(struct batadv_priv *bat_priv)
  {
  	struct batadv_tvlv_container *tvlv;
  	u16 tvlv_len = 0;
  
  	lockdep_assert_held(&bat_priv->tvlv.container_list_lock);
  
  	hlist_for_each_entry(tvlv, &bat_priv->tvlv.container_list, list) {
  		tvlv_len += sizeof(struct batadv_tvlv_hdr);
  		tvlv_len += ntohs(tvlv->tvlv_hdr.len);
  	}
  
  	return tvlv_len;
  }
  
  /**

   * batadv_tvlv_container_remove() - remove tvlv container from the tvlv
   *  container list

   * @bat_priv: the bat priv with all the soft interface information
   * @tvlv: the to be removed tvlv container
   *
   * Has to be called with the appropriate locks being acquired
   * (tvlv.container_list_lock).
   */
  static void batadv_tvlv_container_remove(struct batadv_priv *bat_priv,
  					 struct batadv_tvlv_container *tvlv)
  {
  	lockdep_assert_held(&bat_priv->tvlv.container_list_lock);
  
  	if (!tvlv)
  		return;
  
  	hlist_del(&tvlv->list);
  
  	/* first call to decrement the counter, second call to free */
  	batadv_tvlv_container_put(tvlv);
  	batadv_tvlv_container_put(tvlv);
  }
  
  /**

   * batadv_tvlv_container_unregister() - unregister tvlv container based on the

   *  provided type and version (both need to match)
   * @bat_priv: the bat priv with all the soft interface information
   * @type: tvlv container type to unregister
   * @version: tvlv container type to unregister
   */
  void batadv_tvlv_container_unregister(struct batadv_priv *bat_priv,
  				      u8 type, u8 version)
  {
  	struct batadv_tvlv_container *tvlv;
  
  	spin_lock_bh(&bat_priv->tvlv.container_list_lock);
  	tvlv = batadv_tvlv_container_get(bat_priv, type, version);
  	batadv_tvlv_container_remove(bat_priv, tvlv);
  	spin_unlock_bh(&bat_priv->tvlv.container_list_lock);
  }
  
  /**

   * batadv_tvlv_container_register() - register tvlv type, version and content

   *  to be propagated with each (primary interface) OGM
   * @bat_priv: the bat priv with all the soft interface information
   * @type: tvlv container type
   * @version: tvlv container version
   * @tvlv_value: tvlv container content
   * @tvlv_value_len: tvlv container content length
   *
   * If a container of the same type and version was already registered the new
   * content is going to replace the old one.
   */
  void batadv_tvlv_container_register(struct batadv_priv *bat_priv,
  				    u8 type, u8 version,
  				    void *tvlv_value, u16 tvlv_value_len)
  {
  	struct batadv_tvlv_container *tvlv_old, *tvlv_new;
  
  	if (!tvlv_value)
  		tvlv_value_len = 0;
  
  	tvlv_new = kzalloc(sizeof(*tvlv_new) + tvlv_value_len, GFP_ATOMIC);
  	if (!tvlv_new)
  		return;
  
  	tvlv_new->tvlv_hdr.version = version;
  	tvlv_new->tvlv_hdr.type = type;
  	tvlv_new->tvlv_hdr.len = htons(tvlv_value_len);
  
  	memcpy(tvlv_new + 1, tvlv_value, ntohs(tvlv_new->tvlv_hdr.len));
  	INIT_HLIST_NODE(&tvlv_new->list);
  	kref_init(&tvlv_new->refcount);
  
  	spin_lock_bh(&bat_priv->tvlv.container_list_lock);
  	tvlv_old = batadv_tvlv_container_get(bat_priv, type, version);
  	batadv_tvlv_container_remove(bat_priv, tvlv_old);

  
  	kref_get(&tvlv_new->refcount);

  	hlist_add_head(&tvlv_new->list, &bat_priv->tvlv.container_list);
  	spin_unlock_bh(&bat_priv->tvlv.container_list_lock);

  
  	/* don't return reference to new tvlv_container */
  	batadv_tvlv_container_put(tvlv_new);

  }
  
  /**

   * batadv_tvlv_realloc_packet_buff() - reallocate packet buffer to accommodate

   *  requested packet size
   * @packet_buff: packet buffer
   * @packet_buff_len: packet buffer size
   * @min_packet_len: requested packet minimum size
   * @additional_packet_len: requested additional packet size on top of minimum
   *  size
   *
   * Return: true of the packet buffer could be changed to the requested size,
   * false otherwise.
   */
  static bool batadv_tvlv_realloc_packet_buff(unsigned char **packet_buff,
  					    int *packet_buff_len,
  					    int min_packet_len,
  					    int additional_packet_len)
  {
  	unsigned char *new_buff;
  
  	new_buff = kmalloc(min_packet_len + additional_packet_len, GFP_ATOMIC);
  
  	/* keep old buffer if kmalloc should fail */
  	if (!new_buff)
  		return false;
  
  	memcpy(new_buff, *packet_buff, min_packet_len);
  	kfree(*packet_buff);
  	*packet_buff = new_buff;
  	*packet_buff_len = min_packet_len + additional_packet_len;
  
  	return true;
  }
  
  /**

   * batadv_tvlv_container_ogm_append() - append tvlv container content to given

   *  OGM packet buffer
   * @bat_priv: the bat priv with all the soft interface information
   * @packet_buff: ogm packet buffer
   * @packet_buff_len: ogm packet buffer size including ogm header and tvlv
   *  content
   * @packet_min_len: ogm header size to be preserved for the OGM itself
   *
   * The ogm packet might be enlarged or shrunk depending on the current size
   * and the size of the to-be-appended tvlv containers.
   *
   * Return: size of all appended tvlv containers in bytes.
   */
  u16 batadv_tvlv_container_ogm_append(struct batadv_priv *bat_priv,
  				     unsigned char **packet_buff,
  				     int *packet_buff_len, int packet_min_len)
  {
  	struct batadv_tvlv_container *tvlv;
  	struct batadv_tvlv_hdr *tvlv_hdr;
  	u16 tvlv_value_len;
  	void *tvlv_value;
  	bool ret;
  
  	spin_lock_bh(&bat_priv->tvlv.container_list_lock);
  	tvlv_value_len = batadv_tvlv_container_list_size(bat_priv);
  
  	ret = batadv_tvlv_realloc_packet_buff(packet_buff, packet_buff_len,
  					      packet_min_len, tvlv_value_len);
  
  	if (!ret)
  		goto end;
  
  	if (!tvlv_value_len)
  		goto end;
  
  	tvlv_value = (*packet_buff) + packet_min_len;
  
  	hlist_for_each_entry(tvlv, &bat_priv->tvlv.container_list, list) {
  		tvlv_hdr = tvlv_value;
  		tvlv_hdr->type = tvlv->tvlv_hdr.type;
  		tvlv_hdr->version = tvlv->tvlv_hdr.version;
  		tvlv_hdr->len = tvlv->tvlv_hdr.len;
  		tvlv_value = tvlv_hdr + 1;
  		memcpy(tvlv_value, tvlv + 1, ntohs(tvlv->tvlv_hdr.len));
  		tvlv_value = (u8 *)tvlv_value + ntohs(tvlv->tvlv_hdr.len);
  	}
  
  end:
  	spin_unlock_bh(&bat_priv->tvlv.container_list_lock);
  	return tvlv_value_len;
  }
  
  /**

   * batadv_tvlv_call_handler() - parse the given tvlv buffer to call the

   *  appropriate handlers
   * @bat_priv: the bat priv with all the soft interface information
   * @tvlv_handler: tvlv callback function handling the tvlv content
   * @ogm_source: flag indicating whether the tvlv is an ogm or a unicast packet
   * @orig_node: orig node emitting the ogm packet
   * @src: source mac address of the unicast packet
   * @dst: destination mac address of the unicast packet
   * @tvlv_value: tvlv content
   * @tvlv_value_len: tvlv content length
   *
   * Return: success if handler was not found or the return value of the handler
   * callback.
   */
  static int batadv_tvlv_call_handler(struct batadv_priv *bat_priv,
  				    struct batadv_tvlv_handler *tvlv_handler,
  				    bool ogm_source,
  				    struct batadv_orig_node *orig_node,
  				    u8 *src, u8 *dst,
  				    void *tvlv_value, u16 tvlv_value_len)
  {
  	if (!tvlv_handler)
  		return NET_RX_SUCCESS;
  
  	if (ogm_source) {
  		if (!tvlv_handler->ogm_handler)
  			return NET_RX_SUCCESS;
  
  		if (!orig_node)
  			return NET_RX_SUCCESS;
  
  		tvlv_handler->ogm_handler(bat_priv, orig_node,
  					  BATADV_NO_FLAGS,
  					  tvlv_value, tvlv_value_len);
  		tvlv_handler->flags |= BATADV_TVLV_HANDLER_OGM_CALLED;
  	} else {
  		if (!src)
  			return NET_RX_SUCCESS;
  
  		if (!dst)
  			return NET_RX_SUCCESS;
  
  		if (!tvlv_handler->unicast_handler)
  			return NET_RX_SUCCESS;
  
  		return tvlv_handler->unicast_handler(bat_priv, src,
  						     dst, tvlv_value,
  						     tvlv_value_len);
  	}
  
  	return NET_RX_SUCCESS;
  }
  
  /**

   * batadv_tvlv_containers_process() - parse the given tvlv buffer to call the

   *  appropriate handlers
   * @bat_priv: the bat priv with all the soft interface information
   * @ogm_source: flag indicating whether the tvlv is an ogm or a unicast packet
   * @orig_node: orig node emitting the ogm packet
   * @src: source mac address of the unicast packet
   * @dst: destination mac address of the unicast packet
   * @tvlv_value: tvlv content
   * @tvlv_value_len: tvlv content length
   *
   * Return: success when processing an OGM or the return value of all called
   * handler callbacks.
   */
  int batadv_tvlv_containers_process(struct batadv_priv *bat_priv,
  				   bool ogm_source,
  				   struct batadv_orig_node *orig_node,
  				   u8 *src, u8 *dst,
  				   void *tvlv_value, u16 tvlv_value_len)
  {
  	struct batadv_tvlv_handler *tvlv_handler;
  	struct batadv_tvlv_hdr *tvlv_hdr;
  	u16 tvlv_value_cont_len;
  	u8 cifnotfound = BATADV_TVLV_HANDLER_OGM_CIFNOTFND;
  	int ret = NET_RX_SUCCESS;
  
  	while (tvlv_value_len >= sizeof(*tvlv_hdr)) {
  		tvlv_hdr = tvlv_value;
  		tvlv_value_cont_len = ntohs(tvlv_hdr->len);
  		tvlv_value = tvlv_hdr + 1;
  		tvlv_value_len -= sizeof(*tvlv_hdr);
  
  		if (tvlv_value_cont_len > tvlv_value_len)
  			break;
  
  		tvlv_handler = batadv_tvlv_handler_get(bat_priv,
  						       tvlv_hdr->type,
  						       tvlv_hdr->version);
  
  		ret |= batadv_tvlv_call_handler(bat_priv, tvlv_handler,
  						ogm_source, orig_node,
  						src, dst, tvlv_value,
  						tvlv_value_cont_len);
  		if (tvlv_handler)
  			batadv_tvlv_handler_put(tvlv_handler);
  		tvlv_value = (u8 *)tvlv_value + tvlv_value_cont_len;
  		tvlv_value_len -= tvlv_value_cont_len;
  	}
  
  	if (!ogm_source)
  		return ret;
  
  	rcu_read_lock();
  	hlist_for_each_entry_rcu(tvlv_handler,
  				 &bat_priv->tvlv.handler_list, list) {
  		if ((tvlv_handler->flags & BATADV_TVLV_HANDLER_OGM_CIFNOTFND) &&
  		    !(tvlv_handler->flags & BATADV_TVLV_HANDLER_OGM_CALLED))
  			tvlv_handler->ogm_handler(bat_priv, orig_node,
  						  cifnotfound, NULL, 0);
  
  		tvlv_handler->flags &= ~BATADV_TVLV_HANDLER_OGM_CALLED;
  	}
  	rcu_read_unlock();
  
  	return NET_RX_SUCCESS;
  }
  
  /**

   * batadv_tvlv_ogm_receive() - process an incoming ogm and call the appropriate

   *  handlers
   * @bat_priv: the bat priv with all the soft interface information
   * @batadv_ogm_packet: ogm packet containing the tvlv containers
   * @orig_node: orig node emitting the ogm packet
   */
  void batadv_tvlv_ogm_receive(struct batadv_priv *bat_priv,
  			     struct batadv_ogm_packet *batadv_ogm_packet,
  			     struct batadv_orig_node *orig_node)
  {
  	void *tvlv_value;
  	u16 tvlv_value_len;
  
  	if (!batadv_ogm_packet)
  		return;
  
  	tvlv_value_len = ntohs(batadv_ogm_packet->tvlv_len);
  	if (!tvlv_value_len)
  		return;
  
  	tvlv_value = batadv_ogm_packet + 1;
  
  	batadv_tvlv_containers_process(bat_priv, true, orig_node, NULL, NULL,
  				       tvlv_value, tvlv_value_len);
  }
  
  /**

   * batadv_tvlv_handler_register() - register tvlv handler based on the provided

   *  type and version (both need to match) for ogm tvlv payload and/or unicast
   *  payload
   * @bat_priv: the bat priv with all the soft interface information
   * @optr: ogm tvlv handler callback function. This function receives the orig
   *  node, flags and the tvlv content as argument to process.
   * @uptr: unicast tvlv handler callback function. This function receives the
   *  source & destination of the unicast packet as well as the tvlv content
   *  to process.
   * @type: tvlv handler type to be registered
   * @version: tvlv handler version to be registered
   * @flags: flags to enable or disable TVLV API behavior
   */
  void batadv_tvlv_handler_register(struct batadv_priv *bat_priv,
  				  void (*optr)(struct batadv_priv *bat_priv,
  					       struct batadv_orig_node *orig,
  					       u8 flags,
  					       void *tvlv_value,
  					       u16 tvlv_value_len),
  				  int (*uptr)(struct batadv_priv *bat_priv,
  					      u8 *src, u8 *dst,
  					      void *tvlv_value,
  					      u16 tvlv_value_len),
  				  u8 type, u8 version, u8 flags)
  {
  	struct batadv_tvlv_handler *tvlv_handler;
  
  	tvlv_handler = batadv_tvlv_handler_get(bat_priv, type, version);
  	if (tvlv_handler) {
  		batadv_tvlv_handler_put(tvlv_handler);
  		return;
  	}
  
  	tvlv_handler = kzalloc(sizeof(*tvlv_handler), GFP_ATOMIC);
  	if (!tvlv_handler)
  		return;
  
  	tvlv_handler->ogm_handler = optr;
  	tvlv_handler->unicast_handler = uptr;
  	tvlv_handler->type = type;
  	tvlv_handler->version = version;
  	tvlv_handler->flags = flags;
  	kref_init(&tvlv_handler->refcount);
  	INIT_HLIST_NODE(&tvlv_handler->list);
  
  	spin_lock_bh(&bat_priv->tvlv.handler_list_lock);

  	kref_get(&tvlv_handler->refcount);

  	hlist_add_head_rcu(&tvlv_handler->list, &bat_priv->tvlv.handler_list);
  	spin_unlock_bh(&bat_priv->tvlv.handler_list_lock);

  
  	/* don't return reference to new tvlv_handler */
  	batadv_tvlv_handler_put(tvlv_handler);

  }
  
  /**

   * batadv_tvlv_handler_unregister() - unregister tvlv handler based on the

   *  provided type and version (both need to match)
   * @bat_priv: the bat priv with all the soft interface information
   * @type: tvlv handler type to be unregistered
   * @version: tvlv handler version to be unregistered
   */
  void batadv_tvlv_handler_unregister(struct batadv_priv *bat_priv,
  				    u8 type, u8 version)
  {
  	struct batadv_tvlv_handler *tvlv_handler;
  
  	tvlv_handler = batadv_tvlv_handler_get(bat_priv, type, version);
  	if (!tvlv_handler)
  		return;
  
  	batadv_tvlv_handler_put(tvlv_handler);
  	spin_lock_bh(&bat_priv->tvlv.handler_list_lock);
  	hlist_del_rcu(&tvlv_handler->list);
  	spin_unlock_bh(&bat_priv->tvlv.handler_list_lock);
  	batadv_tvlv_handler_put(tvlv_handler);
  }
  
  /**

   * batadv_tvlv_unicast_send() - send a unicast packet with tvlv payload to the

   *  specified host
   * @bat_priv: the bat priv with all the soft interface information
   * @src: source mac address of the unicast packet
   * @dst: destination mac address of the unicast packet
   * @type: tvlv type
   * @version: tvlv version
   * @tvlv_value: tvlv content
   * @tvlv_value_len: tvlv content length
   */
  void batadv_tvlv_unicast_send(struct batadv_priv *bat_priv, u8 *src,
  			      u8 *dst, u8 type, u8 version,
  			      void *tvlv_value, u16 tvlv_value_len)
  {
  	struct batadv_unicast_tvlv_packet *unicast_tvlv_packet;
  	struct batadv_tvlv_hdr *tvlv_hdr;
  	struct batadv_orig_node *orig_node;
  	struct sk_buff *skb;
  	unsigned char *tvlv_buff;
  	unsigned int tvlv_len;
  	ssize_t hdr_len = sizeof(*unicast_tvlv_packet);
  
  	orig_node = batadv_orig_hash_find(bat_priv, dst);
  	if (!orig_node)
  		return;
  
  	tvlv_len = sizeof(*tvlv_hdr) + tvlv_value_len;
  
  	skb = netdev_alloc_skb_ip_align(NULL, ETH_HLEN + hdr_len + tvlv_len);
  	if (!skb)
  		goto out;
  
  	skb->priority = TC_PRIO_CONTROL;
  	skb_reserve(skb, ETH_HLEN);
  	tvlv_buff = skb_put(skb, sizeof(*unicast_tvlv_packet) + tvlv_len);
  	unicast_tvlv_packet = (struct batadv_unicast_tvlv_packet *)tvlv_buff;
  	unicast_tvlv_packet->packet_type = BATADV_UNICAST_TVLV;
  	unicast_tvlv_packet->version = BATADV_COMPAT_VERSION;
  	unicast_tvlv_packet->ttl = BATADV_TTL;
  	unicast_tvlv_packet->reserved = 0;
  	unicast_tvlv_packet->tvlv_len = htons(tvlv_len);
  	unicast_tvlv_packet->align = 0;
  	ether_addr_copy(unicast_tvlv_packet->src, src);
  	ether_addr_copy(unicast_tvlv_packet->dst, dst);
  
  	tvlv_buff = (unsigned char *)(unicast_tvlv_packet + 1);
  	tvlv_hdr = (struct batadv_tvlv_hdr *)tvlv_buff;
  	tvlv_hdr->version = version;
  	tvlv_hdr->type = type;
  	tvlv_hdr->len = htons(tvlv_value_len);
  	tvlv_buff += sizeof(*tvlv_hdr);
  	memcpy(tvlv_buff, tvlv_value, tvlv_value_len);

  	batadv_send_skb_to_orig(skb, orig_node, NULL);

  out:
  	batadv_orig_node_put(orig_node);
  }