Linux kernel mirror (for testing)
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linux
1/* SPDX-License-Identifier: GPL-2.0 */
2/* Copyright (C) 2011-2019 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/stddef.h>
14#include <linux/types.h>
15
16struct net_device;
17struct netlink_callback;
18struct seq_file;
19struct sk_buff;
20
21/**
22 * batadv_bla_is_loopdetect_mac() - check if the mac address is from a loop
23 * detect frame sent by bridge loop avoidance
24 * @mac: mac address to check
25 *
26 * Return: true if the it looks like a loop detect frame
27 * (mac starts with BA:BE), false otherwise
28 */
29static inline bool batadv_bla_is_loopdetect_mac(const uint8_t *mac)
30{
31 if (mac[0] == 0xba && mac[1] == 0xbe)
32 return true;
33
34 return false;
35}
36
37#ifdef CONFIG_BATMAN_ADV_BLA
38bool batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb,
39 unsigned short vid, bool is_bcast);
40bool batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb,
41 unsigned short vid);
42bool batadv_bla_is_backbone_gw(struct sk_buff *skb,
43 struct batadv_orig_node *orig_node,
44 int hdr_size);
45int batadv_bla_claim_table_seq_print_text(struct seq_file *seq, void *offset);
46int batadv_bla_claim_dump(struct sk_buff *msg, struct netlink_callback *cb);
47int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq,
48 void *offset);
49int batadv_bla_backbone_dump(struct sk_buff *msg, struct netlink_callback *cb);
50bool batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv, u8 *orig,
51 unsigned short vid);
52bool batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv,
53 struct sk_buff *skb);
54void batadv_bla_update_orig_address(struct batadv_priv *bat_priv,
55 struct batadv_hard_iface *primary_if,
56 struct batadv_hard_iface *oldif);
57void batadv_bla_status_update(struct net_device *net_dev);
58int batadv_bla_init(struct batadv_priv *bat_priv);
59void batadv_bla_free(struct batadv_priv *bat_priv);
60int batadv_bla_claim_dump(struct sk_buff *msg, struct netlink_callback *cb);
61#ifdef CONFIG_BATMAN_ADV_DAT
62bool batadv_bla_check_claim(struct batadv_priv *bat_priv, u8 *addr,
63 unsigned short vid);
64#endif
65#define BATADV_BLA_CRC_INIT 0
66#else /* ifdef CONFIG_BATMAN_ADV_BLA */
67
68static inline bool batadv_bla_rx(struct batadv_priv *bat_priv,
69 struct sk_buff *skb, unsigned short vid,
70 bool is_bcast)
71{
72 return false;
73}
74
75static inline bool batadv_bla_tx(struct batadv_priv *bat_priv,
76 struct sk_buff *skb, unsigned short vid)
77{
78 return false;
79}
80
81static inline bool batadv_bla_is_backbone_gw(struct sk_buff *skb,
82 struct batadv_orig_node *orig_node,
83 int hdr_size)
84{
85 return false;
86}
87
88static inline int batadv_bla_claim_table_seq_print_text(struct seq_file *seq,
89 void *offset)
90{
91 return 0;
92}
93
94static inline int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq,
95 void *offset)
96{
97 return 0;
98}
99
100static inline bool batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv,
101 u8 *orig, unsigned short vid)
102{
103 return false;
104}
105
106static inline bool
107batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv,
108 struct sk_buff *skb)
109{
110 return false;
111}
112
113static inline void
114batadv_bla_update_orig_address(struct batadv_priv *bat_priv,
115 struct batadv_hard_iface *primary_if,
116 struct batadv_hard_iface *oldif)
117{
118}
119
120static inline int batadv_bla_init(struct batadv_priv *bat_priv)
121{
122 return 1;
123}
124
125static inline void batadv_bla_free(struct batadv_priv *bat_priv)
126{
127}
128
129static inline int batadv_bla_claim_dump(struct sk_buff *msg,
130 struct netlink_callback *cb)
131{
132 return -EOPNOTSUPP;
133}
134
135static inline int batadv_bla_backbone_dump(struct sk_buff *msg,
136 struct netlink_callback *cb)
137{
138 return -EOPNOTSUPP;
139}
140
141static inline
142bool batadv_bla_check_claim(struct batadv_priv *bat_priv, u8 *addr,
143 unsigned short vid)
144{
145 return true;
146}
147
148#endif /* ifdef CONFIG_BATMAN_ADV_BLA */
149
150#endif /* ifndef _NET_BATMAN_ADV_BLA_H_ */