1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright (C) 2014-2018 B.A.T.M.A.N. contributors:
3 *
4 * Linus Lüssing
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of version 2 of the GNU General Public
8 * License as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, see <http://www.gnu.org/licenses/>.
17 */
18
19 #ifndef _NET_BATMAN_ADV_MULTICAST_H_
20 #define _NET_BATMAN_ADV_MULTICAST_H_
21
22 #include "main.h"
23
24 struct netlink_callback;
25 struct seq_file;
26 struct sk_buff;
27
28 /**
29 * enum batadv_forw_mode - the way a packet should be forwarded as
30 */
31 enum batadv_forw_mode {
32 /**
33 * @BATADV_FORW_ALL: forward the packet to all nodes (currently via
34 * classic flooding)
35 */
36 BATADV_FORW_ALL,
37
38 /**
39 * @BATADV_FORW_SINGLE: forward the packet to a single node (currently
40 * via the BATMAN unicast routing protocol)
41 */
42 BATADV_FORW_SINGLE,
43
44 /** @BATADV_FORW_NONE: don't forward, drop it */
45 BATADV_FORW_NONE,
46 };
47
48 #ifdef CONFIG_BATMAN_ADV_MCAST
49
50 enum batadv_forw_mode
51 batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
52 struct batadv_orig_node **mcast_single_orig);
53
54 void batadv_mcast_init(struct batadv_priv *bat_priv);
55
56 int batadv_mcast_flags_seq_print_text(struct seq_file *seq, void *offset);
57
58 int batadv_mcast_mesh_info_put(struct sk_buff *msg,
59 struct batadv_priv *bat_priv);
60
61 int batadv_mcast_flags_dump(struct sk_buff *msg, struct netlink_callback *cb);
62
63 void batadv_mcast_free(struct batadv_priv *bat_priv);
64
65 void batadv_mcast_purge_orig(struct batadv_orig_node *orig_node);
66
67 #else
68
69 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)70 batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
71 struct batadv_orig_node **mcast_single_orig)
72 {
73 return BATADV_FORW_ALL;
74 }
75
batadv_mcast_init(struct batadv_priv * bat_priv)76 static inline int batadv_mcast_init(struct batadv_priv *bat_priv)
77 {
78 return 0;
79 }
80
81 static inline int
batadv_mcast_mesh_info_put(struct sk_buff * msg,struct batadv_priv * bat_priv)82 batadv_mcast_mesh_info_put(struct sk_buff *msg, struct batadv_priv *bat_priv)
83 {
84 return 0;
85 }
86
batadv_mcast_flags_dump(struct sk_buff * msg,struct netlink_callback * cb)87 static inline int batadv_mcast_flags_dump(struct sk_buff *msg,
88 struct netlink_callback *cb)
89 {
90 return -EOPNOTSUPP;
91 }
92
batadv_mcast_free(struct batadv_priv * bat_priv)93 static inline void batadv_mcast_free(struct batadv_priv *bat_priv)
94 {
95 }
96
batadv_mcast_purge_orig(struct batadv_orig_node * orig_node)97 static inline void batadv_mcast_purge_orig(struct batadv_orig_node *orig_node)
98 {
99 }
100
101 #endif /* CONFIG_BATMAN_ADV_MCAST */
102
103 #endif /* _NET_BATMAN_ADV_MULTICAST_H_ */
104