net/batman-adv/multicast.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /* Copyright (C) 2014-2019  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 struct netlink_callback;
  13 struct seq_file;
  14 struct sk_buff;
  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_ALL: forward the packet to all nodes (currently via
  22          *  classic flooding)
  23          */
  24         BATADV_FORW_ALL,
  25
  26         /**
  27          * @BATADV_FORW_SINGLE: forward the packet to a single node (currently
  28          *  via the BATMAN unicast routing protocol)
  29          */
  30         BATADV_FORW_SINGLE,
  31
  32         /** @BATADV_FORW_NONE: don't forward, drop it */
  33         BATADV_FORW_NONE,
  34 };
  35
  36 #ifdef CONFIG_BATMAN_ADV_MCAST
  37
  38 enum batadv_forw_mode
  39 batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
  40                        struct batadv_orig_node **mcast_single_orig);
  41
  42 void batadv_mcast_init(struct batadv_priv *bat_priv);
  43
  44 int batadv_mcast_flags_seq_print_text(struct seq_file *seq, void *offset);
  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
  58 batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
  59                        struct batadv_orig_node **mcast_single_orig)
  60 {
  61         return BATADV_FORW_ALL;
  62 }
  63
  64 static inline int batadv_mcast_init(struct batadv_priv *bat_priv)
  65 {
  66         return 0;
  67 }
  68
  69 static inline int
  70 batadv_mcast_mesh_info_put(struct sk_buff *msg, struct batadv_priv *bat_priv)
  71 {
  72         return 0;
  73 }
  74
  75 static inline int batadv_mcast_flags_dump(struct sk_buff *msg,
  76                                           struct netlink_callback *cb)
  77 {
  78         return -EOPNOTSUPP;
  79 }
  80
  81 static inline void batadv_mcast_free(struct batadv_priv *bat_priv)
  82 {
  83 }
  84
  85 static inline void batadv_mcast_purge_orig(struct batadv_orig_node *orig_node)
  86 {
  87 }
  88
  89 #endif /* CONFIG_BATMAN_ADV_MCAST */
  90
  91 #endif /* _NET_BATMAN_ADV_MULTICAST_H_ */