net/batman-adv/gateway_client.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 /* Copyright (C) B.A.T.M.A.N. contributors:
0003  *
0004  * Marek Lindner
0005  */
0006
0007 #ifndef _NET_BATMAN_ADV_GATEWAY_CLIENT_H_
0008 #define _NET_BATMAN_ADV_GATEWAY_CLIENT_H_
0009
0010 #include "main.h"
0011
0012 #include <linux/kref.h>
0013 #include <linux/netlink.h>
0014 #include <linux/skbuff.h>
0015 #include <linux/types.h>
0016 #include <uapi/linux/batadv_packet.h>
0017
0018 void batadv_gw_check_client_stop(struct batadv_priv *bat_priv);
0019 void batadv_gw_reselect(struct batadv_priv *bat_priv);
0020 void batadv_gw_election(struct batadv_priv *bat_priv);
0021 struct batadv_orig_node *
0022 batadv_gw_get_selected_orig(struct batadv_priv *bat_priv);
0023 void batadv_gw_check_election(struct batadv_priv *bat_priv,
0024                   struct batadv_orig_node *orig_node);
0025 void batadv_gw_node_update(struct batadv_priv *bat_priv,
0026                struct batadv_orig_node *orig_node,
0027                struct batadv_tvlv_gateway_data *gateway);
0028 void batadv_gw_node_delete(struct batadv_priv *bat_priv,
0029                struct batadv_orig_node *orig_node);
0030 void batadv_gw_node_free(struct batadv_priv *bat_priv);
0031 void batadv_gw_node_release(struct kref *ref);
0032 struct batadv_gw_node *
0033 batadv_gw_get_selected_gw_node(struct batadv_priv *bat_priv);
0034 int batadv_gw_dump(struct sk_buff *msg, struct netlink_callback *cb);
0035 bool batadv_gw_out_of_range(struct batadv_priv *bat_priv, struct sk_buff *skb);
0036 enum batadv_dhcp_recipient
0037 batadv_gw_dhcp_recipient_get(struct sk_buff *skb, unsigned int *header_len,
0038                  u8 *chaddr);
0039 struct batadv_gw_node *batadv_gw_node_get(struct batadv_priv *bat_priv,
0040                       struct batadv_orig_node *orig_node);
0041
0042 /**
0043  * batadv_gw_node_put() - decrement the gw_node refcounter and possibly release
0044  *  it
0045  * @gw_node: gateway node to free
0046  */
0047 static inline void batadv_gw_node_put(struct batadv_gw_node *gw_node)
0048 {
0049     if (!gw_node)
0050         return;
0051
0052     kref_put(&gw_node->refcount, batadv_gw_node_release);
0053 }
0054
0055 #endif /* _NET_BATMAN_ADV_GATEWAY_CLIENT_H_ */