net/batman-adv/multicast.h

   1 /* Copyright (C) 2014-2015 B.A.T.M.A.N. contributors:
   2  *
   3  * Linus Lüssing
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of version 2 of the GNU General Public
   7  * License as published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  12  * General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #ifndef _NET_BATMAN_ADV_MULTICAST_H_
  19 #define _NET_BATMAN_ADV_MULTICAST_H_
  20
  21 #include "main.h"
  22
  23 struct batadv_orig_node;
  24 struct batadv_priv;
  25 struct sk_buff;
  26
  27 /**
  28  * batadv_forw_mode - the way a packet should be forwarded as
  29  * @BATADV_FORW_ALL: forward the packet to all nodes (currently via classic
  30  *  flooding)
  31  * @BATADV_FORW_SINGLE: forward the packet to a single node (currently via the
  32  *  BATMAN unicast routing protocol)
  33  * @BATADV_FORW_NONE: don't forward, drop it
  34  */
  35 enum batadv_forw_mode {
  36         BATADV_FORW_ALL,
  37         BATADV_FORW_SINGLE,
  38         BATADV_FORW_NONE,
  39 };
  40
  41 #ifdef CONFIG_BATMAN_ADV_MCAST
  42
  43 void batadv_mcast_mla_update(struct batadv_priv *bat_priv);
  44
  45 enum batadv_forw_mode
  46 batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
  47                        struct batadv_orig_node **mcast_single_orig);
  48
  49 void batadv_mcast_init(struct batadv_priv *bat_priv);
  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 void batadv_mcast_mla_update(struct batadv_priv *bat_priv)
  58 {
  59 }
  60
  61 static inline enum batadv_forw_mode
  62 batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
  63                        struct batadv_orig_node **mcast_single_orig)
  64 {
  65         return BATADV_FORW_ALL;
  66 }
  67
  68 static inline int batadv_mcast_init(struct batadv_priv *bat_priv)
  69 {
  70         return 0;
  71 }
  72
  73 static inline void batadv_mcast_free(struct batadv_priv *bat_priv)
  74 {
  75 }
  76
  77 static inline void batadv_mcast_purge_orig(struct batadv_orig_node *orig_node)
  78 {
  79 }
  80
  81 #endif /* CONFIG_BATMAN_ADV_MCAST */
  82
  83 #endif /* _NET_BATMAN_ADV_MULTICAST_H_ */