1/* SPDX-License-Identifier: GPL-2.0 */
2/* Copyright (C) B.A.T.M.A.N. contributors:
3 *
4 * Linus Lüssing
5 */
6
7#ifndef _NET_BATMAN_ADV_MULTICAST_H_
8#define _NET_BATMAN_ADV_MULTICAST_H_
9
10#include "main.h"
11
12#include <linux/netlink.h>
13#include <linux/skbuff.h>
14
15/**
16 * enum batadv_forw_mode - the way a packet should be forwarded as
17 */
18enum batadv_forw_mode {
19 /**
20 * @BATADV_FORW_BCAST: forward the packet to all nodes via a batman-adv
21 * broadcast packet
22 */
23 BATADV_FORW_BCAST,
24
25 /**
26 * @BATADV_FORW_UCASTS: forward the packet to some nodes via one
27 * or more batman-adv unicast packets
28 */
29 BATADV_FORW_UCASTS,
30
31 /** @BATADV_FORW_NONE: don't forward, drop it */
32 BATADV_FORW_NONE,
33};
34
35#ifdef CONFIG_BATMAN_ADV_MCAST
36
37enum batadv_forw_mode
38batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
39 int *is_routable);
40
41int batadv_mcast_forw_send(struct batadv_priv *bat_priv, struct sk_buff *skb,
42 unsigned short vid, int is_routable);
43
44void batadv_mcast_init(struct batadv_priv *bat_priv);
45
46int batadv_mcast_mesh_info_put(struct sk_buff *msg,
47 struct batadv_priv *bat_priv);
48
49int batadv_mcast_flags_dump(struct sk_buff *msg, struct netlink_callback *cb);
50
51void batadv_mcast_free(struct batadv_priv *bat_priv);
52
53void batadv_mcast_purge_orig(struct batadv_orig_node *orig_node);
54
55#else
56
57static inline enum batadv_forw_mode
58batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
59 int *is_routable)
60{
61 return BATADV_FORW_BCAST;
62}
63
64static inline int
65batadv_mcast_forw_send(struct batadv_priv *bat_priv, struct sk_buff *skb,
66 unsigned short vid, int is_routable)
67{
68 kfree_skb(skb);
69 return NET_XMIT_DROP;
70}
71
72static inline int batadv_mcast_init(struct batadv_priv *bat_priv)
73{
74 return 0;
75}
76
77static inline int
78batadv_mcast_mesh_info_put(struct sk_buff *msg, struct batadv_priv *bat_priv)
79{
80 return 0;
81}
82
83static inline int batadv_mcast_flags_dump(struct sk_buff *msg,
84 struct netlink_callback *cb)
85{
86 return -EOPNOTSUPP;
87}
88
89static inline void batadv_mcast_free(struct batadv_priv *bat_priv)
90{
91}
92
93static inline void batadv_mcast_purge_orig(struct batadv_orig_node *orig_node)
94{
95}
96
97#endif /* CONFIG_BATMAN_ADV_MCAST */
98
99#endif /* _NET_BATMAN_ADV_MULTICAST_H_ */
100

source code of linux/net/batman-adv/multicast.h