ipv6: by default join ff01::1 and in case of forwarding ff01::2 and ff05:2
[pandora-kernel.git] / net / batman-adv / distributed-arp-table.h
1 /* Copyright (C) 2011-2013 B.A.T.M.A.N. contributors:
2  *
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
23 #ifdef CONFIG_BATMAN_ADV_DAT
24
25 #include "types.h"
26 #include "originator.h"
27
28 #include <linux/if_arp.h>
29
30 #define BATADV_DAT_ADDR_MAX ((batadv_dat_addr_t)~(batadv_dat_addr_t)0)
31
32 bool batadv_dat_snoop_outgoing_arp_request(struct batadv_priv *bat_priv,
33                                            struct sk_buff *skb);
34 bool batadv_dat_snoop_incoming_arp_request(struct batadv_priv *bat_priv,
35                                            struct sk_buff *skb, int hdr_size);
36 void batadv_dat_snoop_outgoing_arp_reply(struct batadv_priv *bat_priv,
37                                          struct sk_buff *skb);
38 bool batadv_dat_snoop_incoming_arp_reply(struct batadv_priv *bat_priv,
39                                          struct sk_buff *skb, int hdr_size);
40 bool batadv_dat_drop_broadcast_packet(struct batadv_priv *bat_priv,
41                                       struct batadv_forw_packet *forw_packet);
42
43 /**
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  */
47 static inline void
48 batadv_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  */
61 static inline void
62 batadv_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
73 int batadv_dat_init(struct batadv_priv *bat_priv);
74 void batadv_dat_free(struct batadv_priv *bat_priv);
75 int batadv_dat_cache_seq_print_text(struct seq_file *seq, void *offset);
76
77 /**
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  */
84 static 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
99 #else
100
101 static inline bool
102 batadv_dat_snoop_outgoing_arp_request(struct batadv_priv *bat_priv,
103                                       struct sk_buff *skb)
104 {
105         return false;
106 }
107
108 static inline bool
109 batadv_dat_snoop_incoming_arp_request(struct batadv_priv *bat_priv,
110                                       struct sk_buff *skb, int hdr_size)
111 {
112         return false;
113 }
114
115 static inline bool
116 batadv_dat_snoop_outgoing_arp_reply(struct batadv_priv *bat_priv,
117                                     struct sk_buff *skb)
118 {
119         return false;
120 }
121
122 static inline bool
123 batadv_dat_snoop_incoming_arp_reply(struct batadv_priv *bat_priv,
124                                     struct sk_buff *skb, int hdr_size)
125 {
126         return false;
127 }
128
129 static inline bool
130 batadv_dat_drop_broadcast_packet(struct batadv_priv *bat_priv,
131                                  struct batadv_forw_packet *forw_packet)
132 {
133         return false;
134 }
135
136 static inline void
137 batadv_dat_init_orig_node_addr(struct batadv_orig_node *orig_node)
138 {
139 }
140
141 static inline void batadv_dat_init_own_addr(struct batadv_priv *bat_priv,
142                                             struct batadv_hard_iface *iface)
143 {
144 }
145
146 static inline void batadv_arp_change_timeout(struct net_device *soft_iface,
147                                              const char *name)
148 {
149 }
150
151 static inline int batadv_dat_init(struct batadv_priv *bat_priv)
152 {
153         return 0;
154 }
155
156 static inline void batadv_dat_free(struct batadv_priv *bat_priv)
157 {
158 }
159
160 static inline void batadv_dat_inc_counter(struct batadv_priv *bat_priv,
161                                           uint8_t subtype)
162 {
163 }
164
165 #endif /* CONFIG_BATMAN_ADV_DAT */
166
167 #endif /* _NET_BATMAN_ADV_ARP_H_ */