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 | |