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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 it looks like a loop detect frame
25 * (mac starts with BA:BE), false otherwise
26 */
27static 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
36bool batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb,
37 unsigned short vid, int packet_type);
38bool batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb,
39 unsigned short vid);
40bool batadv_bla_is_backbone_gw(struct sk_buff *skb,
41 struct batadv_orig_node *orig_node,
42 int hdr_size);
43int batadv_bla_claim_dump(struct sk_buff *msg, struct netlink_callback *cb);
44int batadv_bla_backbone_dump(struct sk_buff *msg, struct netlink_callback *cb);
45bool batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv, u8 *orig,
46 unsigned short vid);
47bool batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv,
48 struct sk_buff *skb);
49void batadv_bla_update_orig_address(struct batadv_priv *bat_priv,
50 struct batadv_hard_iface *primary_if,
51 struct batadv_hard_iface *oldif);
52void batadv_bla_status_update(struct net_device *net_dev);
53int batadv_bla_init(struct batadv_priv *bat_priv);
54void batadv_bla_free(struct batadv_priv *bat_priv);
55#ifdef CONFIG_BATMAN_ADV_DAT
56bool 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
62static 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
69static inline bool batadv_bla_tx(struct batadv_priv *bat_priv,
70 struct sk_buff *skb, unsigned short vid)
71{
72 return false;
73}
74
75static 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
82static 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
88static inline bool
89batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv,
90 struct sk_buff *skb)
91{
92 return false;
93}
94
95static inline void
96batadv_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
102static inline int batadv_bla_init(struct batadv_priv *bat_priv)
103{
104 return 1;
105}
106
107static inline void batadv_bla_free(struct batadv_priv *bat_priv)
108{
109}
110
111static inline int batadv_bla_claim_dump(struct sk_buff *msg,
112 struct netlink_callback *cb)
113{
114 return -EOPNOTSUPP;
115}
116
117static inline int batadv_bla_backbone_dump(struct sk_buff *msg,
118 struct netlink_callback *cb)
119{
120 return -EOPNOTSUPP;
121}
122
123static inline
124bool 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_ */