1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright (C) B.A.T.M.A.N. contributors:
3 *
4 * Simon Wunderlich
5 */
6
7 #ifndef _NET_BATMAN_ADV_BLA_H_
8 #define _NET_BATMAN_ADV_BLA_H_
9
10 #include "main.h"
11
12 #include <linux/compiler.h>
13 #include <linux/netdevice.h>
14 #include <linux/netlink.h>
15 #include <linux/skbuff.h>
16 #include <linux/stddef.h>
17 #include <linux/types.h>
18
19 /**
20 * batadv_bla_is_loopdetect_mac() - check if the mac address is from a loop
21 * detect frame sent by bridge loop avoidance
22 * @mac: mac address to check
23 *
24 * Return: true if the it looks like a loop detect frame
25 * (mac starts with BA:BE), false otherwise
26 */
27 static inline bool batadv_bla_is_loopdetect_mac(const uint8_t *mac)
28 {
29 if (mac[0] == 0xba && mac[1] == 0xbe)
30 return true;
31
32 return false;
33 }
34
35 #ifdef CONFIG_BATMAN_ADV_BLA
36 bool batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb,
37 unsigned short vid, int packet_type);
38 bool batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb,
39 unsigned short vid);
40 bool batadv_bla_is_backbone_gw(struct sk_buff *skb,
41 struct batadv_orig_node *orig_node,
42 int hdr_size);
43 int batadv_bla_claim_dump(struct sk_buff *msg, struct netlink_callback *cb);
44 int batadv_bla_backbone_dump(struct sk_buff *msg, struct netlink_callback *cb);
45 bool batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv, u8 *orig,
46 unsigned short vid);
47 bool batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv,
48 struct sk_buff *skb);
49 void batadv_bla_update_orig_address(struct batadv_priv *bat_priv,
50 struct batadv_hard_iface *primary_if,
51 struct batadv_hard_iface *oldif);
52 void batadv_bla_status_update(struct net_device *net_dev);
53 int batadv_bla_init(struct batadv_priv *bat_priv);
54 void batadv_bla_free(struct batadv_priv *bat_priv);
55 #ifdef CONFIG_BATMAN_ADV_DAT
56 bool batadv_bla_check_claim(struct batadv_priv *bat_priv, u8 *addr,
57 unsigned short vid);
58 #endif
59 #define BATADV_BLA_CRC_INIT 0
60 #else /* ifdef CONFIG_BATMAN_ADV_BLA */
61
62 static inline bool batadv_bla_rx(struct batadv_priv *bat_priv,
63 struct sk_buff *skb, unsigned short vid,
64 int packet_type)
65 {
66 return false;
67 }
68
69 static inline bool batadv_bla_tx(struct batadv_priv *bat_priv,
70 struct sk_buff *skb, unsigned short vid)
71 {
72 return false;
73 }
74
75 static inline bool batadv_bla_is_backbone_gw(struct sk_buff *skb,
76 struct batadv_orig_node *orig_node,
77 int hdr_size)
78 {
79 return false;
80 }
81
82 static inline bool batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv,
83 u8 *orig, unsigned short vid)
84 {
85 return false;
86 }
87
88 static inline bool
89 batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv,
90 struct sk_buff *skb)
91 {
92 return false;
93 }
94
95 static inline void
96 batadv_bla_update_orig_address(struct batadv_priv *bat_priv,
97 struct batadv_hard_iface *primary_if,
98 struct batadv_hard_iface *oldif)
99 {
100 }
101
102 static inline int batadv_bla_init(struct batadv_priv *bat_priv)
103 {
104 return 1;
105 }
106
107 static inline void batadv_bla_free(struct batadv_priv *bat_priv)
108 {
109 }
110
111 static inline int batadv_bla_claim_dump(struct sk_buff *msg,
112 struct netlink_callback *cb)
113 {
114 return -EOPNOTSUPP;
115 }
116
117 static inline int batadv_bla_backbone_dump(struct sk_buff *msg,
118 struct netlink_callback *cb)
119 {
120 return -EOPNOTSUPP;
121 }
122
123 static inline
124 bool batadv_bla_check_claim(struct batadv_priv *bat_priv, u8 *addr,
125 unsigned short vid)
126 {
127 return true;
128 }
129
130 #endif /* ifdef CONFIG_BATMAN_ADV_BLA */
131
132 #endif /* ifndef _NET_BATMAN_ADV_BLA_H_ */
133
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