aboutsummaryrefslogtreecommitdiffstats
path: root/net/batman-adv/distributed-arp-table.h
blob: 26d4a525a798ec37b644e789b5176475e0cf0d92 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
/* Copyright (C) 2011-2015 B.A.T.M.A.N. contributors:
 *
 * Antonio Quartulli
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

#ifndef _NET_BATMAN_ADV_DISTRIBUTED_ARP_TABLE_H_
#define _NET_BATMAN_ADV_DISTRIBUTED_ARP_TABLE_H_

#include "main.h"

#include <linux/compiler.h>
#include <linux/netdevice.h>
#include <linux/types.h>

#include "originator.h"
#include "packet.h"

struct seq_file;
struct sk_buff;

#ifdef CONFIG_BATMAN_ADV_DAT

/* BATADV_DAT_ADDR_MAX - maximum address value in the DHT space */
#define BATADV_DAT_ADDR_MAX ((batadv_dat_addr_t)~(batadv_dat_addr_t)0)

void batadv_dat_status_update(struct net_device *net_dev);
bool batadv_dat_snoop_outgoing_arp_request(struct batadv_priv *bat_priv,
					   struct sk_buff *skb);
bool batadv_dat_snoop_incoming_arp_request(struct batadv_priv *bat_priv,
					   struct sk_buff *skb, int hdr_size);
void batadv_dat_snoop_outgoing_arp_reply(struct batadv_priv *bat_priv,
					 struct sk_buff *skb);
bool batadv_dat_snoop_incoming_arp_reply(struct batadv_priv *bat_priv,
					 struct sk_buff *skb, int hdr_size);
bool batadv_dat_drop_broadcast_packet(struct batadv_priv *bat_priv,
				      struct batadv_forw_packet *forw_packet);

/**
 * batadv_dat_init_orig_node_addr - assign a DAT address to the orig_node
 * @orig_node: the node to assign the DAT address to
 */
static inline void
batadv_dat_init_orig_node_addr(struct batadv_orig_node *orig_node)
{
	u32 addr;

	addr = batadv_choose_orig(orig_node->orig, BATADV_DAT_ADDR_MAX);
	orig_node->dat_addr = (batadv_dat_addr_t)addr;
}

/**
 * batadv_dat_init_own_addr - assign a DAT address to the node itself
 * @bat_priv: the bat priv with all the soft interface information
 * @primary_if: a pointer to the primary interface
 */
static inline void
batadv_dat_init_own_addr(struct batadv_priv *bat_priv,
			 struct batadv_hard_iface *primary_if)
{
	u32 addr;

	addr = batadv_choose_orig(primary_if->net_dev->dev_addr,
				  BATADV_DAT_ADDR_MAX);

	bat_priv->dat.addr = (batadv_dat_addr_t)addr;
}

int batadv_dat_init(struct batadv_priv *bat_priv);
void batadv_dat_free(struct batadv_priv *bat_priv);
int batadv_dat_cache_seq_print_text(struct seq_file *seq, void *offset);

/**
 * batadv_dat_inc_counter - increment the correct DAT packet counter
 * @bat_priv: the bat priv with all the soft interface information
 * @subtype: the 4addr subtype of the packet to be counted
 *
 * Updates the ethtool statistics for the received packet if it is a DAT subtype
 */
static inline void batadv_dat_inc_counter(struct batadv_priv *bat_priv,
					  u8 subtype)
{
	switch (subtype) {
	case BATADV_P_DAT_DHT_GET:
		batadv_inc_counter(bat_priv,
				   BATADV_CNT_DAT_GET_RX);
		break;
	case BATADV_P_DAT_DHT_PUT:
		batadv_inc_counter(bat_priv,
				   BATADV_CNT_DAT_PUT_RX);
		break;
	}
}

#else

static inline void batadv_dat_status_update(struct net_device *net_dev)
{
}

static inline bool
batadv_dat_snoop_outgoing_arp_request(struct batadv_priv *bat_priv,
				      struct sk_buff *skb)
{
	return false;
}

static inline bool
batadv_dat_snoop_incoming_arp_request(struct batadv_priv *bat_priv,
				      struct sk_buff *skb, int hdr_size)
{
	return false;
}

static inline bool
batadv_dat_snoop_outgoing_arp_reply(struct batadv_priv *bat_priv,
				    struct sk_buff *skb)
{
	return false;
}

static inline bool
batadv_dat_snoop_incoming_arp_reply(struct batadv_priv *bat_priv,
				    struct sk_buff *skb, int hdr_size)
{
	return false;
}

static inline bool
batadv_dat_drop_broadcast_packet(struct batadv_priv *bat_priv,
				 struct batadv_forw_packet *forw_packet)
{
	return false;
}

static inline void
batadv_dat_init_orig_node_addr(struct batadv_orig_node *orig_node)
{
}

static inline void batadv_dat_init_own_addr(struct batadv_priv *bat_priv,
					    struct batadv_hard_iface *iface)
{
}

static inline void batadv_arp_change_timeout(struct net_device *soft_iface,
					     const char *name)
{
}

static inline int batadv_dat_init(struct batadv_priv *bat_priv)
{
	return 0;
}

static inline void batadv_dat_free(struct batadv_priv *bat_priv)
{
}

static inline void batadv_dat_inc_counter(struct batadv_priv *bat_priv,
					  u8 subtype)
{
}

#endif /* CONFIG_BATMAN_ADV_DAT */

#endif /* _NET_BATMAN_ADV_DISTRIBUTED_ARP_TABLE_H_ */

Privacy Policy