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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
Antonio Quartullic384ea32011-06-26 03:37:18 +020032bool batadv_dat_snoop_outgoing_arp_request(struct batadv_priv *bat_priv,
33 struct sk_buff *skb);
34bool batadv_dat_snoop_incoming_arp_request(struct batadv_priv *bat_priv,
35 struct sk_buff *skb, int hdr_size);
36void batadv_dat_snoop_outgoing_arp_reply(struct batadv_priv *bat_priv,
37 struct sk_buff *skb);
38bool batadv_dat_snoop_incoming_arp_reply(struct batadv_priv *bat_priv,
39 struct sk_buff *skb, int hdr_size);
40bool batadv_dat_drop_broadcast_packet(struct batadv_priv *bat_priv,
41 struct batadv_forw_packet *forw_packet);
42
Antonio Quartulli785ea112011-11-23 11:35:44 +010043/**
44 * batadv_dat_init_orig_node_addr - assign a DAT address to the orig_node
45 * @orig_node: the node to assign the DAT address to
46 */
47static inline void
48batadv_dat_init_orig_node_addr(struct batadv_orig_node *orig_node)
49{
50 uint32_t addr;
51
52 addr = batadv_choose_orig(orig_node->orig, BATADV_DAT_ADDR_MAX);
53 orig_node->dat_addr = (batadv_dat_addr_t)addr;
54}
55
56/**
57 * batadv_dat_init_own_addr - assign a DAT address to the node itself
58 * @bat_priv: the bat priv with all the soft interface information
59 * @primary_if: a pointer to the primary interface
60 */
61static inline void
62batadv_dat_init_own_addr(struct batadv_priv *bat_priv,
63 struct batadv_hard_iface *primary_if)
64{
65 uint32_t addr;
66
67 addr = batadv_choose_orig(primary_if->net_dev->dev_addr,
68 BATADV_DAT_ADDR_MAX);
69
70 bat_priv->dat.addr = (batadv_dat_addr_t)addr;
71}
72
Antonio Quartulli2f1dfbe2012-06-30 20:01:19 +020073int batadv_dat_init(struct batadv_priv *bat_priv);
74void batadv_dat_free(struct batadv_priv *bat_priv);
75int batadv_dat_cache_seq_print_text(struct seq_file *seq, void *offset);
76
Martin Hundebøll4046b242012-04-20 17:02:45 +020077/**
78 * batadv_dat_inc_counter - increment the correct DAT packet counter
79 * @bat_priv: the bat priv with all the soft interface information
80 * @subtype: the 4addr subtype of the packet to be counted
81 *
82 * Updates the ethtool statistics for the received packet if it is a DAT subtype
83 */
84static inline void batadv_dat_inc_counter(struct batadv_priv *bat_priv,
85 uint8_t subtype)
86{
87 switch (subtype) {
88 case BATADV_P_DAT_DHT_GET:
89 batadv_inc_counter(bat_priv,
90 BATADV_CNT_DAT_GET_RX);
91 break;
92 case BATADV_P_DAT_DHT_PUT:
93 batadv_inc_counter(bat_priv,
94 BATADV_CNT_DAT_PUT_RX);
95 break;
96 }
97}
98
Antonio Quartulli17224472011-11-06 12:23:55 +010099#else
100
101static inline bool
102batadv_dat_snoop_outgoing_arp_request(struct batadv_priv *bat_priv,
103 struct sk_buff *skb)
104{
105 return false;
106}
107
108static inline bool
109batadv_dat_snoop_incoming_arp_request(struct batadv_priv *bat_priv,
110 struct sk_buff *skb, int hdr_size)
111{
112 return false;
113}
114
115static inline bool
116batadv_dat_snoop_outgoing_arp_reply(struct batadv_priv *bat_priv,
117 struct sk_buff *skb)
118{
119 return false;
120}
121
122static inline bool
123batadv_dat_snoop_incoming_arp_reply(struct batadv_priv *bat_priv,
124 struct sk_buff *skb, int hdr_size)
125{
126 return false;
127}
128
129static inline bool
130batadv_dat_drop_broadcast_packet(struct batadv_priv *bat_priv,
131 struct batadv_forw_packet *forw_packet)
132{
133 return false;
134}
135
136static inline void
137batadv_dat_init_orig_node_addr(struct batadv_orig_node *orig_node)
138{
139}
140
141static inline void batadv_dat_init_own_addr(struct batadv_priv *bat_priv,
142 struct batadv_hard_iface *iface)
143{
144}
145
146static inline void batadv_arp_change_timeout(struct net_device *soft_iface,
147 const char *name)
148{
149}
150
151static inline int batadv_dat_init(struct batadv_priv *bat_priv)
152{
153 return 0;
154}
155
156static inline void batadv_dat_free(struct batadv_priv *bat_priv)
157{
158}
159
Martin Hundebøll4046b242012-04-20 17:02:45 +0200160static inline void batadv_dat_inc_counter(struct batadv_priv *bat_priv,
161 uint8_t subtype)
162{
163}
164
Antonio Quartulli17224472011-11-06 12:23:55 +0100165#endif /* CONFIG_BATMAN_ADV_DAT */
166
Antonio Quartulli785ea112011-11-23 11:35:44 +0100167#endif /* _NET_BATMAN_ADV_ARP_H_ */