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Antonio Quartulli0b873932013-01-04 03:05:31 +01001/* Copyright (C) 2011-2013 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
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
17 * 02110-1301, USA
18 */
19
20#ifndef _NET_BATMAN_ADV_ARP_H_
21#define _NET_BATMAN_ADV_ARP_H_
22
Antonio Quartulli17224472011-11-06 12:23:55 +010023#ifdef CONFIG_BATMAN_ADV_DAT
24
Antonio Quartulli785ea112011-11-23 11:35:44 +010025#include "types.h"
26#include "originator.h"
27
Antonio Quartulli5c3a0e52011-06-02 12:29:51 +020028#include <linux/if_arp.h>
29
Antonio Quartulli785ea112011-11-23 11:35:44 +010030#define BATADV_DAT_ADDR_MAX ((batadv_dat_addr_t)~(batadv_dat_addr_t)0)
31
Marek Lindner17cf0ea2013-04-23 21:39:59 +080032void batadv_dat_status_update(struct net_device *net_dev);
Antonio Quartullic384ea32011-06-26 03:37:18 +020033bool batadv_dat_snoop_outgoing_arp_request(struct batadv_priv *bat_priv,
34 struct sk_buff *skb);
35bool batadv_dat_snoop_incoming_arp_request(struct batadv_priv *bat_priv,
36 struct sk_buff *skb, int hdr_size);
37void batadv_dat_snoop_outgoing_arp_reply(struct batadv_priv *bat_priv,
38 struct sk_buff *skb);
39bool batadv_dat_snoop_incoming_arp_reply(struct batadv_priv *bat_priv,
40 struct sk_buff *skb, int hdr_size);
41bool batadv_dat_drop_broadcast_packet(struct batadv_priv *bat_priv,
42 struct batadv_forw_packet *forw_packet);
43
Antonio Quartulli785ea112011-11-23 11:35:44 +010044/**
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
47 */
48static inline void
49batadv_dat_init_orig_node_addr(struct batadv_orig_node *orig_node)
50{
51 uint32_t addr;
52
53 addr = batadv_choose_orig(orig_node->orig, BATADV_DAT_ADDR_MAX);
54 orig_node->dat_addr = (batadv_dat_addr_t)addr;
55}
56
57/**
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
61 */
62static inline void
63batadv_dat_init_own_addr(struct batadv_priv *bat_priv,
64 struct batadv_hard_iface *primary_if)
65{
66 uint32_t addr;
67
68 addr = batadv_choose_orig(primary_if->net_dev->dev_addr,
69 BATADV_DAT_ADDR_MAX);
70
71 bat_priv->dat.addr = (batadv_dat_addr_t)addr;
72}
73
Antonio Quartulli2f1dfbe2012-06-30 20:01:19 +020074int batadv_dat_init(struct batadv_priv *bat_priv);
75void batadv_dat_free(struct batadv_priv *bat_priv);
76int batadv_dat_cache_seq_print_text(struct seq_file *seq, void *offset);
77
Martin Hundebøll4046b242012-04-20 17:02:45 +020078/**
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
82 *
83 * Updates the ethtool statistics for the received packet if it is a DAT subtype
84 */
85static inline void batadv_dat_inc_counter(struct batadv_priv *bat_priv,
86 uint8_t subtype)
87{
88 switch (subtype) {
89 case BATADV_P_DAT_DHT_GET:
90 batadv_inc_counter(bat_priv,
91 BATADV_CNT_DAT_GET_RX);
92 break;
93 case BATADV_P_DAT_DHT_PUT:
94 batadv_inc_counter(bat_priv,
95 BATADV_CNT_DAT_PUT_RX);
96 break;
97 }
98}
99
Antonio Quartulli17224472011-11-06 12:23:55 +0100100#else
101
Marek Lindner17cf0ea2013-04-23 21:39:59 +0800102static inline void batadv_dat_status_update(struct net_device *net_dev)
103{
104}
105
Antonio Quartulli17224472011-11-06 12:23:55 +0100106static inline bool
107batadv_dat_snoop_outgoing_arp_request(struct batadv_priv *bat_priv,
108 struct sk_buff *skb)
109{
110 return false;
111}
112
113static inline bool
114batadv_dat_snoop_incoming_arp_request(struct batadv_priv *bat_priv,
115 struct sk_buff *skb, int hdr_size)
116{
117 return false;
118}
119
120static inline bool
121batadv_dat_snoop_outgoing_arp_reply(struct batadv_priv *bat_priv,
122 struct sk_buff *skb)
123{
124 return false;
125}
126
127static inline bool
128batadv_dat_snoop_incoming_arp_reply(struct batadv_priv *bat_priv,
129 struct sk_buff *skb, int hdr_size)
130{
131 return false;
132}
133
134static inline bool
135batadv_dat_drop_broadcast_packet(struct batadv_priv *bat_priv,
136 struct batadv_forw_packet *forw_packet)
137{
138 return false;
139}
140
141static inline void
142batadv_dat_init_orig_node_addr(struct batadv_orig_node *orig_node)
143{
144}
145
146static inline void batadv_dat_init_own_addr(struct batadv_priv *bat_priv,
147 struct batadv_hard_iface *iface)
148{
149}
150
151static inline void batadv_arp_change_timeout(struct net_device *soft_iface,
152 const char *name)
153{
154}
155
156static inline int batadv_dat_init(struct batadv_priv *bat_priv)
157{
158 return 0;
159}
160
161static inline void batadv_dat_free(struct batadv_priv *bat_priv)
162{
163}
164
Martin Hundebøll4046b242012-04-20 17:02:45 +0200165static inline void batadv_dat_inc_counter(struct batadv_priv *bat_priv,
166 uint8_t subtype)
167{
168}
169
Antonio Quartulli17224472011-11-06 12:23:55 +0100170#endif /* CONFIG_BATMAN_ADV_DAT */
171
Antonio Quartulli785ea112011-11-23 11:35:44 +0100172#endif /* _NET_BATMAN_ADV_ARP_H_ */