tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
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_ALL: forward the packet to all nodes (currently via
21 * classic flooding)
22 */
23 BATADV_FORW_ALL,
24
25 /**
26 * @BATADV_FORW_SOME: forward the packet to some nodes (currently via
27 * a multicast-to-unicast conversion and the BATMAN unicast routing
28 * protocol)
29 */
30 BATADV_FORW_SOME,
31
32 /**
33 * @BATADV_FORW_SINGLE: forward the packet to a single node (currently
34 * via the BATMAN unicast routing protocol)
35 */
36 BATADV_FORW_SINGLE,
37
38 /** @BATADV_FORW_NONE: don't forward, drop it */
39 BATADV_FORW_NONE,
40};
41
42#ifdef CONFIG_BATMAN_ADV_MCAST
43
44enum batadv_forw_mode
45batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
46 struct batadv_orig_node **mcast_single_orig,
47 int *is_routable);
48
49int batadv_mcast_forw_send_orig(struct batadv_priv *bat_priv,
50 struct sk_buff *skb,
51 unsigned short vid,
52 struct batadv_orig_node *orig_node);
53
54int batadv_mcast_forw_send(struct batadv_priv *bat_priv, struct sk_buff *skb,
55 unsigned short vid, int is_routable);
56
57void batadv_mcast_init(struct batadv_priv *bat_priv);
58
59int batadv_mcast_mesh_info_put(struct sk_buff *msg,
60 struct batadv_priv *bat_priv);
61
62int batadv_mcast_flags_dump(struct sk_buff *msg, struct netlink_callback *cb);
63
64void batadv_mcast_free(struct batadv_priv *bat_priv);
65
66void batadv_mcast_purge_orig(struct batadv_orig_node *orig_node);
67
68#else
69
70static inline enum batadv_forw_mode
71batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
72 struct batadv_orig_node **mcast_single_orig,
73 int *is_routable)
74{
75 return BATADV_FORW_ALL;
76}
77
78static inline int
79batadv_mcast_forw_send_orig(struct batadv_priv *bat_priv,
80 struct sk_buff *skb,
81 unsigned short vid,
82 struct batadv_orig_node *orig_node)
83{
84 kfree_skb(skb);
85 return NET_XMIT_DROP;
86}
87
88static inline int
89batadv_mcast_forw_send(struct batadv_priv *bat_priv, struct sk_buff *skb,
90 unsigned short vid, int is_routable)
91{
92 kfree_skb(skb);
93 return NET_XMIT_DROP;
94}
95
96static inline int batadv_mcast_init(struct batadv_priv *bat_priv)
97{
98 return 0;
99}
100
101static inline int
102batadv_mcast_mesh_info_put(struct sk_buff *msg, struct batadv_priv *bat_priv)
103{
104 return 0;
105}
106
107static inline int batadv_mcast_flags_dump(struct sk_buff *msg,
108 struct netlink_callback *cb)
109{
110 return -EOPNOTSUPP;
111}
112
113static inline void batadv_mcast_free(struct batadv_priv *bat_priv)
114{
115}
116
117static inline void batadv_mcast_purge_orig(struct batadv_orig_node *orig_node)
118{
119}
120
121#endif /* CONFIG_BATMAN_ADV_MCAST */
122
123#endif /* _NET_BATMAN_ADV_MULTICAST_H_ */