1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright (C) 2011-2018 B.A.T.M.A.N. contributors:
3 *
4 * Simon Wunderlich
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of version 2 of the GNU General Public
8 * License as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, see <http://www.gnu.org/licenses/>.
17 */
18
19 #ifndef _NET_BATMAN_ADV_BLA_H_
20 #define _NET_BATMAN_ADV_BLA_H_
21
22 #include "main.h"
23
24 #include <linux/compiler.h>
25 #include <linux/stddef.h>
26 #include <linux/types.h>
27
28 struct net_device;
29 struct netlink_callback;
30 struct seq_file;
31 struct sk_buff;
32
33 /**
34 * batadv_bla_is_loopdetect_mac() - check if the mac address is from a loop
35 * detect frame sent by bridge loop avoidance
36 * @mac: mac address to check
37 *
38 * Return: true if the it looks like a loop detect frame
39 * (mac starts with BA:BE), false otherwise
40 */
batadv_bla_is_loopdetect_mac(const uint8_t * mac)41 static inline bool batadv_bla_is_loopdetect_mac(const uint8_t *mac)
42 {
43 if (mac[0] == 0xba && mac[1] == 0xbe)
44 return true;
45
46 return false;
47 }
48
49 #ifdef CONFIG_BATMAN_ADV_BLA
50 bool batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb,
51 unsigned short vid, bool is_bcast);
52 bool batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb,
53 unsigned short vid);
54 bool batadv_bla_is_backbone_gw(struct sk_buff *skb,
55 struct batadv_orig_node *orig_node,
56 int hdr_size);
57 int batadv_bla_claim_table_seq_print_text(struct seq_file *seq, void *offset);
58 int batadv_bla_claim_dump(struct sk_buff *msg, struct netlink_callback *cb);
59 int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq,
60 void *offset);
61 int batadv_bla_backbone_dump(struct sk_buff *msg, struct netlink_callback *cb);
62 bool batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv, u8 *orig,
63 unsigned short vid);
64 bool batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv,
65 struct sk_buff *skb);
66 void batadv_bla_update_orig_address(struct batadv_priv *bat_priv,
67 struct batadv_hard_iface *primary_if,
68 struct batadv_hard_iface *oldif);
69 void batadv_bla_status_update(struct net_device *net_dev);
70 int batadv_bla_init(struct batadv_priv *bat_priv);
71 void batadv_bla_free(struct batadv_priv *bat_priv);
72 int batadv_bla_claim_dump(struct sk_buff *msg, struct netlink_callback *cb);
73 #ifdef CONFIG_BATMAN_ADV_DAT
74 bool batadv_bla_check_claim(struct batadv_priv *bat_priv, u8 *addr,
75 unsigned short vid);
76 #endif
77 #define BATADV_BLA_CRC_INIT 0
78 #else /* ifdef CONFIG_BATMAN_ADV_BLA */
79
batadv_bla_rx(struct batadv_priv * bat_priv,struct sk_buff * skb,unsigned short vid,bool is_bcast)80 static inline bool batadv_bla_rx(struct batadv_priv *bat_priv,
81 struct sk_buff *skb, unsigned short vid,
82 bool is_bcast)
83 {
84 return false;
85 }
86
batadv_bla_tx(struct batadv_priv * bat_priv,struct sk_buff * skb,unsigned short vid)87 static inline bool batadv_bla_tx(struct batadv_priv *bat_priv,
88 struct sk_buff *skb, unsigned short vid)
89 {
90 return false;
91 }
92
batadv_bla_is_backbone_gw(struct sk_buff * skb,struct batadv_orig_node * orig_node,int hdr_size)93 static inline bool batadv_bla_is_backbone_gw(struct sk_buff *skb,
94 struct batadv_orig_node *orig_node,
95 int hdr_size)
96 {
97 return false;
98 }
99
batadv_bla_claim_table_seq_print_text(struct seq_file * seq,void * offset)100 static inline int batadv_bla_claim_table_seq_print_text(struct seq_file *seq,
101 void *offset)
102 {
103 return 0;
104 }
105
batadv_bla_backbone_table_seq_print_text(struct seq_file * seq,void * offset)106 static inline int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq,
107 void *offset)
108 {
109 return 0;
110 }
111
batadv_bla_is_backbone_gw_orig(struct batadv_priv * bat_priv,u8 * orig,unsigned short vid)112 static inline bool batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv,
113 u8 *orig, unsigned short vid)
114 {
115 return false;
116 }
117
118 static inline bool
batadv_bla_check_bcast_duplist(struct batadv_priv * bat_priv,struct sk_buff * skb)119 batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv,
120 struct sk_buff *skb)
121 {
122 return false;
123 }
124
125 static inline void
batadv_bla_update_orig_address(struct batadv_priv * bat_priv,struct batadv_hard_iface * primary_if,struct batadv_hard_iface * oldif)126 batadv_bla_update_orig_address(struct batadv_priv *bat_priv,
127 struct batadv_hard_iface *primary_if,
128 struct batadv_hard_iface *oldif)
129 {
130 }
131
batadv_bla_init(struct batadv_priv * bat_priv)132 static inline int batadv_bla_init(struct batadv_priv *bat_priv)
133 {
134 return 1;
135 }
136
batadv_bla_free(struct batadv_priv * bat_priv)137 static inline void batadv_bla_free(struct batadv_priv *bat_priv)
138 {
139 }
140
batadv_bla_claim_dump(struct sk_buff * msg,struct netlink_callback * cb)141 static inline int batadv_bla_claim_dump(struct sk_buff *msg,
142 struct netlink_callback *cb)
143 {
144 return -EOPNOTSUPP;
145 }
146
batadv_bla_backbone_dump(struct sk_buff * msg,struct netlink_callback * cb)147 static inline int batadv_bla_backbone_dump(struct sk_buff *msg,
148 struct netlink_callback *cb)
149 {
150 return -EOPNOTSUPP;
151 }
152
153 static inline
batadv_bla_check_claim(struct batadv_priv * bat_priv,u8 * addr,unsigned short vid)154 bool batadv_bla_check_claim(struct batadv_priv *bat_priv, u8 *addr,
155 unsigned short vid)
156 {
157 return true;
158 }
159
160 #endif /* ifdef CONFIG_BATMAN_ADV_BLA */
161
162 #endif /* ifndef _NET_BATMAN_ADV_BLA_H_ */
163
