net/batman-adv/gateway_client.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /* Copyright (C) B.A.T.M.A.N. contributors:
   3  *
   4  * Marek Lindner
   5  */
   6
   7 #ifndef _NET_BATMAN_ADV_GATEWAY_CLIENT_H_
   8 #define _NET_BATMAN_ADV_GATEWAY_CLIENT_H_
   9
  10 #include "main.h"
  11
  12 #include <linux/kref.h>
  13 #include <linux/netlink.h>
  14 #include <linux/skbuff.h>
  15 #include <linux/types.h>
  16 #include <uapi/linux/batadv_packet.h>
  17
  18 void batadv_gw_check_client_stop(struct batadv_priv *bat_priv);
  19 void batadv_gw_reselect(struct batadv_priv *bat_priv);
  20 void batadv_gw_election(struct batadv_priv *bat_priv);
  21 struct batadv_orig_node *
  22 batadv_gw_get_selected_orig(struct batadv_priv *bat_priv);
  23 void batadv_gw_check_election(struct batadv_priv *bat_priv,
  24                               struct batadv_orig_node *orig_node);
  25 void batadv_gw_node_update(struct batadv_priv *bat_priv,
  26                            struct batadv_orig_node *orig_node,
  27                            struct batadv_tvlv_gateway_data *gateway);
  28 void batadv_gw_node_delete(struct batadv_priv *bat_priv,
  29                            struct batadv_orig_node *orig_node);
  30 void batadv_gw_node_free(struct batadv_priv *bat_priv);
  31 void batadv_gw_node_release(struct kref *ref);
  32 struct batadv_gw_node *
  33 batadv_gw_get_selected_gw_node(struct batadv_priv *bat_priv);
  34 int batadv_gw_dump(struct sk_buff *msg, struct netlink_callback *cb);
  35 bool batadv_gw_out_of_range(struct batadv_priv *bat_priv, struct sk_buff *skb);
  36 enum batadv_dhcp_recipient
  37 batadv_gw_dhcp_recipient_get(struct sk_buff *skb, unsigned int *header_len,
  38                              u8 *chaddr);
  39 struct batadv_gw_node *batadv_gw_node_get(struct batadv_priv *bat_priv,
  40                                           struct batadv_orig_node *orig_node);
  41
  42 /**
  43  * batadv_gw_node_put() - decrement the gw_node refcounter and possibly release
  44  *  it
  45  * @gw_node: gateway node to free
  46  */
  47 static inline void batadv_gw_node_put(struct batadv_gw_node *gw_node)
  48 {
  49         if (!gw_node)
  50                 return;
  51
  52         kref_put(&gw_node->refcount, batadv_gw_node_release);
  53 }
  54
  55 #endif /* _NET_BATMAN_ADV_GATEWAY_CLIENT_H_ */