summaryrefslogtreecommitdiff
path: root/net/batman-adv/multicast.h
blob: d61593d020723b3ef1732c5e1dee18d8b25adc01 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (C) 2014-2020  B.A.T.M.A.N. contributors:
 *
 * Linus Lüssing
 */

#ifndef _NET_BATMAN_ADV_MULTICAST_H_
#define _NET_BATMAN_ADV_MULTICAST_H_

#include "main.h"

#include <linux/netlink.h>
#include <linux/skbuff.h>

/**
 * enum batadv_forw_mode - the way a packet should be forwarded as
 */
enum batadv_forw_mode {
	/**
	 * @BATADV_FORW_ALL: forward the packet to all nodes (currently via
	 *  classic flooding)
	 */
	BATADV_FORW_ALL,

	/**
	 * @BATADV_FORW_SOME: forward the packet to some nodes (currently via
	 *  a multicast-to-unicast conversion and the BATMAN unicast routing
	 *  protocol)
	 */
	BATADV_FORW_SOME,

	/**
	 * @BATADV_FORW_SINGLE: forward the packet to a single node (currently
	 *  via the BATMAN unicast routing protocol)
	 */
	BATADV_FORW_SINGLE,

	/** @BATADV_FORW_NONE: don't forward, drop it */
	BATADV_FORW_NONE,
};

#ifdef CONFIG_BATMAN_ADV_MCAST

enum batadv_forw_mode
batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
		       struct batadv_orig_node **mcast_single_orig);

int batadv_mcast_forw_send_orig(struct batadv_priv *bat_priv,
				struct sk_buff *skb,
				unsigned short vid,
				struct batadv_orig_node *orig_node);

int batadv_mcast_forw_send(struct batadv_priv *bat_priv, struct sk_buff *skb,
			   unsigned short vid);

void batadv_mcast_init(struct batadv_priv *bat_priv);

int batadv_mcast_mesh_info_put(struct sk_buff *msg,
			       struct batadv_priv *bat_priv);

int batadv_mcast_flags_dump(struct sk_buff *msg, struct netlink_callback *cb);

void batadv_mcast_free(struct batadv_priv *bat_priv);

void batadv_mcast_purge_orig(struct batadv_orig_node *orig_node);

#else

static inline enum batadv_forw_mode
batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
		       struct batadv_orig_node **mcast_single_orig)
{
	return BATADV_FORW_ALL;
}

static inline int
batadv_mcast_forw_send_orig(struct batadv_priv *bat_priv,
			    struct sk_buff *skb,
			    unsigned short vid,
			    struct batadv_orig_node *orig_node)
{
	kfree_skb(skb);
	return NET_XMIT_DROP;
}

static inline int
batadv_mcast_forw_send(struct batadv_priv *bat_priv, struct sk_buff *skb,
		       unsigned short vid)
{
	kfree_skb(skb);
	return NET_XMIT_DROP;
}

static inline int batadv_mcast_init(struct batadv_priv *bat_priv)
{
	return 0;
}

static inline int
batadv_mcast_mesh_info_put(struct sk_buff *msg, struct batadv_priv *bat_priv)
{
	return 0;
}

static inline int batadv_mcast_flags_dump(struct sk_buff *msg,
					  struct netlink_callback *cb)
{
	return -EOPNOTSUPP;
}

static inline void batadv_mcast_free(struct batadv_priv *bat_priv)
{
}

static inline void batadv_mcast_purge_orig(struct batadv_orig_node *orig_node)
{
}

#endif /* CONFIG_BATMAN_ADV_MCAST */

#endif /* _NET_BATMAN_ADV_MULTICAST_H_ */