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 */
18 enum 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
37 enum batadv_forw_mode
38 batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
39 int *is_routable);
40
41 int batadv_mcast_forw_send(struct batadv_priv *bat_priv, struct sk_buff *skb,
42 unsigned short vid, int is_routable);
43
44 void batadv_mcast_init(struct batadv_priv *bat_priv);
45
46 int batadv_mcast_mesh_info_put(struct sk_buff *msg,
47 struct batadv_priv *bat_priv);
48
49 int batadv_mcast_flags_dump(struct sk_buff *msg, struct netlink_callback *cb);
50
51 void batadv_mcast_free(struct batadv_priv *bat_priv);
52
53 void batadv_mcast_purge_orig(struct batadv_orig_node *orig_node);
54
55 #else
56
57 static inline enum batadv_forw_mode
batadv_mcast_forw_mode(struct batadv_priv * bat_priv,struct sk_buff * skb,int * is_routable)58 batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
59 int *is_routable)
60 {
61 return BATADV_FORW_BCAST;
62 }
63
64 static inline int
batadv_mcast_forw_send(struct batadv_priv * bat_priv,struct sk_buff * skb,unsigned short vid,int is_routable)65 batadv_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
batadv_mcast_init(struct batadv_priv * bat_priv)72 static inline int batadv_mcast_init(struct batadv_priv *bat_priv)
73 {
74 return 0;
75 }
76
77 static inline int
batadv_mcast_mesh_info_put(struct sk_buff * msg,struct batadv_priv * bat_priv)78 batadv_mcast_mesh_info_put(struct sk_buff *msg, struct batadv_priv *bat_priv)
79 {
80 return 0;
81 }
82
batadv_mcast_flags_dump(struct sk_buff * msg,struct netlink_callback * cb)83 static inline int batadv_mcast_flags_dump(struct sk_buff *msg,
84 struct netlink_callback *cb)
85 {
86 return -EOPNOTSUPP;
87 }
88
batadv_mcast_free(struct batadv_priv * bat_priv)89 static inline void batadv_mcast_free(struct batadv_priv *bat_priv)
90 {
91 }
92
batadv_mcast_purge_orig(struct batadv_orig_node * orig_node)93 static 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