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