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 | #include <linux/types.h> |
15 | |
16 | /** |
17 | * enum batadv_forw_mode - the way a packet should be forwarded as |
18 | */ |
19 | enum batadv_forw_mode { |
20 | /** |
21 | * @BATADV_FORW_BCAST: forward the packet to all nodes via a batman-adv |
22 | * broadcast packet |
23 | */ |
24 | BATADV_FORW_BCAST, |
25 | |
26 | /** |
27 | * @BATADV_FORW_UCASTS: forward the packet to some nodes via one |
28 | * or more batman-adv unicast packets |
29 | */ |
30 | BATADV_FORW_UCASTS, |
31 | |
32 | /** |
33 | * @BATADV_FORW_MCAST: forward the packet to some nodes via a |
34 | * batman-adv multicast packet |
35 | */ |
36 | BATADV_FORW_MCAST, |
37 | |
38 | /** @BATADV_FORW_NONE: don't forward, drop it */ |
39 | BATADV_FORW_NONE, |
40 | }; |
41 | |
42 | #ifdef CONFIG_BATMAN_ADV_MCAST |
43 | |
44 | enum batadv_forw_mode |
45 | batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb, |
46 | unsigned short vid, int *is_routable); |
47 | |
48 | int batadv_mcast_forw_send(struct batadv_priv *bat_priv, struct sk_buff *skb, |
49 | unsigned short vid, int is_routable); |
50 | |
51 | void batadv_mcast_init(struct batadv_priv *bat_priv); |
52 | |
53 | int batadv_mcast_mesh_info_put(struct sk_buff *msg, |
54 | struct batadv_priv *bat_priv); |
55 | |
56 | int batadv_mcast_flags_dump(struct sk_buff *msg, struct netlink_callback *cb); |
57 | |
58 | void batadv_mcast_free(struct batadv_priv *bat_priv); |
59 | |
60 | void batadv_mcast_purge_orig(struct batadv_orig_node *orig_node); |
61 | |
62 | /* multicast_forw.c */ |
63 | |
64 | int batadv_mcast_forw_tracker_tvlv_handler(struct batadv_priv *bat_priv, |
65 | struct sk_buff *skb); |
66 | |
67 | unsigned int batadv_mcast_forw_packet_hdrlen(unsigned int num_dests); |
68 | |
69 | bool batadv_mcast_forw_push(struct batadv_priv *bat_priv, struct sk_buff *skb, |
70 | unsigned short vid, int is_routable, int count); |
71 | |
72 | int batadv_mcast_forw_mcsend(struct batadv_priv *bat_priv, struct sk_buff *skb); |
73 | |
74 | #else |
75 | |
76 | static inline enum batadv_forw_mode |
77 | batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb, |
78 | unsigned short vid, int *is_routable) |
79 | { |
80 | return BATADV_FORW_BCAST; |
81 | } |
82 | |
83 | static inline int |
84 | batadv_mcast_forw_send(struct batadv_priv *bat_priv, struct sk_buff *skb, |
85 | unsigned short vid, int is_routable) |
86 | { |
87 | kfree_skb(skb); |
88 | return NET_XMIT_DROP; |
89 | } |
90 | |
91 | static inline int batadv_mcast_init(struct batadv_priv *bat_priv) |
92 | { |
93 | return 0; |
94 | } |
95 | |
96 | static inline int |
97 | batadv_mcast_mesh_info_put(struct sk_buff *msg, struct batadv_priv *bat_priv) |
98 | { |
99 | return 0; |
100 | } |
101 | |
102 | static inline int batadv_mcast_flags_dump(struct sk_buff *msg, |
103 | struct netlink_callback *cb) |
104 | { |
105 | return -EOPNOTSUPP; |
106 | } |
107 | |
108 | static inline void batadv_mcast_free(struct batadv_priv *bat_priv) |
109 | { |
110 | } |
111 | |
112 | static inline void batadv_mcast_purge_orig(struct batadv_orig_node *orig_node) |
113 | { |
114 | } |
115 | |
116 | static inline int batadv_mcast_forw_mcsend(struct batadv_priv *bat_priv, |
117 | struct sk_buff *skb) |
118 | { |
119 | kfree_skb(skb); |
120 | return NET_XMIT_DROP; |
121 | } |
122 | |
123 | #endif /* CONFIG_BATMAN_ADV_MCAST */ |
124 | |
125 | #endif /* _NET_BATMAN_ADV_MULTICAST_H_ */ |
126 | |