1/* SPDX-License-Identifier: GPL-2.0 */
2/* Copyright (C) 2009-2020  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/seq_file.h>
15#include <linux/skbuff.h>
16#include <linux/types.h>
17#include <uapi/linux/batadv_packet.h>
18
19void batadv_gw_check_client_stop(struct batadv_priv *bat_priv);
20void batadv_gw_reselect(struct batadv_priv *bat_priv);
21void batadv_gw_election(struct batadv_priv *bat_priv);
22struct batadv_orig_node *
23batadv_gw_get_selected_orig(struct batadv_priv *bat_priv);
24void batadv_gw_check_election(struct batadv_priv *bat_priv,
25			      struct batadv_orig_node *orig_node);
26void batadv_gw_node_update(struct batadv_priv *bat_priv,
27			   struct batadv_orig_node *orig_node,
28			   struct batadv_tvlv_gateway_data *gateway);
29void batadv_gw_node_delete(struct batadv_priv *bat_priv,
30			   struct batadv_orig_node *orig_node);
31void batadv_gw_node_free(struct batadv_priv *bat_priv);
32void batadv_gw_node_release(struct kref *ref);
33struct batadv_gw_node *
34batadv_gw_get_selected_gw_node(struct batadv_priv *bat_priv);
35int batadv_gw_client_seq_print_text(struct seq_file *seq, void *offset);
36int batadv_gw_dump(struct sk_buff *msg, struct netlink_callback *cb);
37bool batadv_gw_out_of_range(struct batadv_priv *bat_priv, struct sk_buff *skb);
38enum batadv_dhcp_recipient
39batadv_gw_dhcp_recipient_get(struct sk_buff *skb, unsigned int *header_len,
40			     u8 *chaddr);
41struct batadv_gw_node *batadv_gw_node_get(struct batadv_priv *bat_priv,
42					  struct batadv_orig_node *orig_node);
43
44/**
45 * batadv_gw_node_put() - decrement the gw_node refcounter and possibly release
46 *  it
47 * @gw_node: gateway node to free
48 */
49static inline void batadv_gw_node_put(struct batadv_gw_node *gw_node)
50{
51	if (!gw_node)
52		return;
53
54	kref_put(&gw_node->refcount, batadv_gw_node_release);
55}
56
57#endif /* _NET_BATMAN_ADV_GATEWAY_CLIENT_H_ */
58