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Simon Wunderliche19f9752014-01-04 18:04:25 +01001/* Copyright (C) 2011-2014 B.A.T.M.A.N. contributors:
Antonio Quartulli785ea112011-11-23 11:35:44 +01002 *
3 * Antonio Quartulli
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of version 2 of the GNU General Public
7 * License as published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
Antonio Quartulliebf38fb2013-11-03 20:40:48 +010015 * along with this program; if not, see <http://www.gnu.org/licenses/>.
Antonio Quartulli785ea112011-11-23 11:35:44 +010016 */
17
Antonio Quartullia48bcac2013-10-13 23:02:45 +020018#ifndef _NET_BATMAN_ADV_DISTRIBUTED_ARP_TABLE_H_
19#define _NET_BATMAN_ADV_DISTRIBUTED_ARP_TABLE_H_
Antonio Quartulli785ea112011-11-23 11:35:44 +010020
Antonio Quartulli17224472011-11-06 12:23:55 +010021#ifdef CONFIG_BATMAN_ADV_DAT
22
Antonio Quartulli785ea112011-11-23 11:35:44 +010023#include "types.h"
24#include "originator.h"
25
Antonio Quartulli5c3a0e52011-06-02 12:29:51 +020026#include <linux/if_arp.h>
27
Antonio Quartulli151dcb32014-02-22 17:02:38 +010028/**
29 * BATADV_DAT_ADDR_MAX - maximum address value in the DHT space
30 */
Antonio Quartulli785ea112011-11-23 11:35:44 +010031#define BATADV_DAT_ADDR_MAX ((batadv_dat_addr_t)~(batadv_dat_addr_t)0)
32
Marek Lindner17cf0ea2013-04-23 21:39:59 +080033void batadv_dat_status_update(struct net_device *net_dev);
Antonio Quartullic384ea32011-06-26 03:37:18 +020034bool batadv_dat_snoop_outgoing_arp_request(struct batadv_priv *bat_priv,
35 struct sk_buff *skb);
36bool batadv_dat_snoop_incoming_arp_request(struct batadv_priv *bat_priv,
37 struct sk_buff *skb, int hdr_size);
38void batadv_dat_snoop_outgoing_arp_reply(struct batadv_priv *bat_priv,
39 struct sk_buff *skb);
40bool batadv_dat_snoop_incoming_arp_reply(struct batadv_priv *bat_priv,
41 struct sk_buff *skb, int hdr_size);
42bool batadv_dat_drop_broadcast_packet(struct batadv_priv *bat_priv,
43 struct batadv_forw_packet *forw_packet);
44
Antonio Quartulli785ea112011-11-23 11:35:44 +010045/**
46 * batadv_dat_init_orig_node_addr - assign a DAT address to the orig_node
47 * @orig_node: the node to assign the DAT address to
48 */
49static inline void
50batadv_dat_init_orig_node_addr(struct batadv_orig_node *orig_node)
51{
52 uint32_t addr;
53
54 addr = batadv_choose_orig(orig_node->orig, BATADV_DAT_ADDR_MAX);
55 orig_node->dat_addr = (batadv_dat_addr_t)addr;
56}
57
58/**
59 * batadv_dat_init_own_addr - assign a DAT address to the node itself
60 * @bat_priv: the bat priv with all the soft interface information
61 * @primary_if: a pointer to the primary interface
62 */
63static inline void
64batadv_dat_init_own_addr(struct batadv_priv *bat_priv,
65 struct batadv_hard_iface *primary_if)
66{
67 uint32_t addr;
68
69 addr = batadv_choose_orig(primary_if->net_dev->dev_addr,
70 BATADV_DAT_ADDR_MAX);
71
72 bat_priv->dat.addr = (batadv_dat_addr_t)addr;
73}
74
Antonio Quartulli2f1dfbe2012-06-30 20:01:19 +020075int batadv_dat_init(struct batadv_priv *bat_priv);
76void batadv_dat_free(struct batadv_priv *bat_priv);
77int batadv_dat_cache_seq_print_text(struct seq_file *seq, void *offset);
78
Martin Hundebøll4046b242012-04-20 17:02:45 +020079/**
80 * batadv_dat_inc_counter - increment the correct DAT packet counter
81 * @bat_priv: the bat priv with all the soft interface information
82 * @subtype: the 4addr subtype of the packet to be counted
83 *
84 * Updates the ethtool statistics for the received packet if it is a DAT subtype
85 */
86static inline void batadv_dat_inc_counter(struct batadv_priv *bat_priv,
87 uint8_t subtype)
88{
89 switch (subtype) {
90 case BATADV_P_DAT_DHT_GET:
91 batadv_inc_counter(bat_priv,
92 BATADV_CNT_DAT_GET_RX);
93 break;
94 case BATADV_P_DAT_DHT_PUT:
95 batadv_inc_counter(bat_priv,
96 BATADV_CNT_DAT_PUT_RX);
97 break;
98 }
99}
100
Antonio Quartulli17224472011-11-06 12:23:55 +0100101#else
102
Marek Lindner17cf0ea2013-04-23 21:39:59 +0800103static inline void batadv_dat_status_update(struct net_device *net_dev)
104{
105}
106
Antonio Quartulli17224472011-11-06 12:23:55 +0100107static inline bool
108batadv_dat_snoop_outgoing_arp_request(struct batadv_priv *bat_priv,
109 struct sk_buff *skb)
110{
111 return false;
112}
113
114static inline bool
115batadv_dat_snoop_incoming_arp_request(struct batadv_priv *bat_priv,
116 struct sk_buff *skb, int hdr_size)
117{
118 return false;
119}
120
121static inline bool
122batadv_dat_snoop_outgoing_arp_reply(struct batadv_priv *bat_priv,
123 struct sk_buff *skb)
124{
125 return false;
126}
127
128static inline bool
129batadv_dat_snoop_incoming_arp_reply(struct batadv_priv *bat_priv,
130 struct sk_buff *skb, int hdr_size)
131{
132 return false;
133}
134
135static inline bool
136batadv_dat_drop_broadcast_packet(struct batadv_priv *bat_priv,
137 struct batadv_forw_packet *forw_packet)
138{
139 return false;
140}
141
142static inline void
143batadv_dat_init_orig_node_addr(struct batadv_orig_node *orig_node)
144{
145}
146
147static inline void batadv_dat_init_own_addr(struct batadv_priv *bat_priv,
148 struct batadv_hard_iface *iface)
149{
150}
151
152static inline void batadv_arp_change_timeout(struct net_device *soft_iface,
153 const char *name)
154{
155}
156
157static inline int batadv_dat_init(struct batadv_priv *bat_priv)
158{
159 return 0;
160}
161
162static inline void batadv_dat_free(struct batadv_priv *bat_priv)
163{
164}
165
Martin Hundebøll4046b242012-04-20 17:02:45 +0200166static inline void batadv_dat_inc_counter(struct batadv_priv *bat_priv,
167 uint8_t subtype)
168{
169}
170
Antonio Quartulli17224472011-11-06 12:23:55 +0100171#endif /* CONFIG_BATMAN_ADV_DAT */
172
Antonio Quartullia48bcac2013-10-13 23:02:45 +0200173#endif /* _NET_BATMAN_ADV_DISTRIBUTED_ARP_TABLE_H_ */