net/batman-adv/multicast.h

   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
  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
  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
  72 static inline int batadv_mcast_init(struct batadv_priv *bat_priv)
  73 {
  74         return 0;
  75 }
  76
  77 static inline int
  78 batadv_mcast_mesh_info_put(struct sk_buff *msg, struct batadv_priv *bat_priv)
  79 {
  80         return 0;
  81 }
  82
  83 static inline int batadv_mcast_flags_dump(struct sk_buff *msg,
  84                                           struct netlink_callback *cb)
  85 {
  86         return -EOPNOTSUPP;
  87 }
  88
  89 static inline void batadv_mcast_free(struct batadv_priv *bat_priv)
  90 {
  91 }
  92
  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_ */