1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright (C) B.A.T.M.A.N. contributors:
7 #ifndef _NET_BATMAN_ADV_DISTRIBUTED_ARP_TABLE_H_
8 #define _NET_BATMAN_ADV_DISTRIBUTED_ARP_TABLE_H_
12 #include <linux/compiler.h>
13 #include <linux/netdevice.h>
14 #include <linux/netlink.h>
15 #include <linux/skbuff.h>
16 #include <linux/types.h>
17 #include <uapi/linux/batadv_packet.h>
19 #include "originator.h"
21 #ifdef CONFIG_BATMAN_ADV_DAT
23 /* BATADV_DAT_ADDR_MAX - maximum address value in the DHT space */
24 #define BATADV_DAT_ADDR_MAX ((batadv_dat_addr_t)~(batadv_dat_addr_t)0)
26 void batadv_dat_status_update(struct net_device *net_dev);
27 bool batadv_dat_snoop_outgoing_arp_request(struct batadv_priv *bat_priv,
29 bool batadv_dat_snoop_incoming_arp_request(struct batadv_priv *bat_priv,
30 struct sk_buff *skb, int hdr_size);
31 void batadv_dat_snoop_outgoing_arp_reply(struct batadv_priv *bat_priv,
33 bool batadv_dat_snoop_incoming_arp_reply(struct batadv_priv *bat_priv,
34 struct sk_buff *skb, int hdr_size);
35 void batadv_dat_snoop_outgoing_dhcp_ack(struct batadv_priv *bat_priv,
39 void batadv_dat_snoop_incoming_dhcp_ack(struct batadv_priv *bat_priv,
40 struct sk_buff *skb, int hdr_size);
41 bool batadv_dat_drop_broadcast_packet(struct batadv_priv *bat_priv,
42 struct batadv_forw_packet *forw_packet);
45 * batadv_dat_init_orig_node_addr() - assign a DAT address to the orig_node
46 * @orig_node: the node to assign the DAT address to
49 batadv_dat_init_orig_node_addr(struct batadv_orig_node *orig_node)
53 addr = batadv_choose_orig(orig_node->orig, BATADV_DAT_ADDR_MAX);
54 orig_node->dat_addr = (batadv_dat_addr_t)addr;
58 * batadv_dat_init_own_addr() - assign a DAT address to the node itself
59 * @bat_priv: the bat priv with all the soft interface information
60 * @primary_if: a pointer to the primary interface
63 batadv_dat_init_own_addr(struct batadv_priv *bat_priv,
64 struct batadv_hard_iface *primary_if)
68 addr = batadv_choose_orig(primary_if->net_dev->dev_addr,
71 bat_priv->dat.addr = (batadv_dat_addr_t)addr;
74 int batadv_dat_init(struct batadv_priv *bat_priv);
75 void batadv_dat_free(struct batadv_priv *bat_priv);
76 int batadv_dat_cache_dump(struct sk_buff *msg, struct netlink_callback *cb);
79 * batadv_dat_inc_counter() - increment the correct DAT packet counter
80 * @bat_priv: the bat priv with all the soft interface information
81 * @subtype: the 4addr subtype of the packet to be counted
83 * Updates the ethtool statistics for the received packet if it is a DAT subtype
85 static inline void batadv_dat_inc_counter(struct batadv_priv *bat_priv,
89 case BATADV_P_DAT_DHT_GET:
90 batadv_inc_counter(bat_priv,
91 BATADV_CNT_DAT_GET_RX);
93 case BATADV_P_DAT_DHT_PUT:
94 batadv_inc_counter(bat_priv,
95 BATADV_CNT_DAT_PUT_RX);
102 static inline void batadv_dat_status_update(struct net_device *net_dev)
107 batadv_dat_snoop_outgoing_arp_request(struct batadv_priv *bat_priv,
114 batadv_dat_snoop_incoming_arp_request(struct batadv_priv *bat_priv,
115 struct sk_buff *skb, int hdr_size)
121 batadv_dat_snoop_outgoing_arp_reply(struct batadv_priv *bat_priv,
128 batadv_dat_snoop_incoming_arp_reply(struct batadv_priv *bat_priv,
129 struct sk_buff *skb, int hdr_size)
135 batadv_dat_snoop_outgoing_dhcp_ack(struct batadv_priv *bat_priv,
136 struct sk_buff *skb, __be16 proto,
142 batadv_dat_snoop_incoming_dhcp_ack(struct batadv_priv *bat_priv,
143 struct sk_buff *skb, int hdr_size)
148 batadv_dat_drop_broadcast_packet(struct batadv_priv *bat_priv,
149 struct batadv_forw_packet *forw_packet)
155 batadv_dat_init_orig_node_addr(struct batadv_orig_node *orig_node)
159 static inline void batadv_dat_init_own_addr(struct batadv_priv *bat_priv,
160 struct batadv_hard_iface *iface)
164 static inline int batadv_dat_init(struct batadv_priv *bat_priv)
169 static inline void batadv_dat_free(struct batadv_priv *bat_priv)
174 batadv_dat_cache_dump(struct sk_buff *msg, struct netlink_callback *cb)
179 static inline void batadv_dat_inc_counter(struct batadv_priv *bat_priv,
184 #endif /* CONFIG_BATMAN_ADV_DAT */
186 #endif /* _NET_BATMAN_ADV_DISTRIBUTED_ARP_TABLE_H_ */