net/batman-adv/multicast.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /* Copyright (C) 2014-2017  B.A.T.M.A.N. contributors:
   3  *
   4  * Linus Lüssing
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of version 2 of the GNU General Public
   8  * License as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  13  * General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #ifndef _NET_BATMAN_ADV_MULTICAST_H_
  20 #define _NET_BATMAN_ADV_MULTICAST_H_
  21
  22 #include "main.h"
  23
  24 struct seq_file;
  25 struct sk_buff;
  26
  27 /**
  28  * enum batadv_forw_mode - the way a packet should be forwarded as
  29  */
  30 enum batadv_forw_mode {
  31         /**
  32          * @BATADV_FORW_ALL: forward the packet to all nodes (currently via
  33          *  classic flooding)
  34          */
  35         BATADV_FORW_ALL,
  36
  37         /**
  38          * @BATADV_FORW_SINGLE: forward the packet to a single node (currently
  39          *  via the BATMAN unicast routing protocol)
  40          */
  41         BATADV_FORW_SINGLE,
  42
  43         /** @BATADV_FORW_NONE: don't forward, drop it */
  44         BATADV_FORW_NONE,
  45 };
  46
  47 #ifdef CONFIG_BATMAN_ADV_MCAST
  48
  49 enum batadv_forw_mode
  50 batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
  51                        struct batadv_orig_node **mcast_single_orig);
  52
  53 void batadv_mcast_init(struct batadv_priv *bat_priv);
  54
  55 int batadv_mcast_flags_seq_print_text(struct seq_file *seq, void *offset);
  56
  57 void batadv_mcast_free(struct batadv_priv *bat_priv);
  58
  59 void batadv_mcast_purge_orig(struct batadv_orig_node *orig_node);
  60
  61 #else
  62
  63 static inline enum batadv_forw_mode
  64 batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
  65                        struct batadv_orig_node **mcast_single_orig)
  66 {
  67         return BATADV_FORW_ALL;
  68 }
  69
  70 static inline int batadv_mcast_init(struct batadv_priv *bat_priv)
  71 {
  72         return 0;
  73 }
  74
  75 static inline void batadv_mcast_free(struct batadv_priv *bat_priv)
  76 {
  77 }
  78
  79 static inline void batadv_mcast_purge_orig(struct batadv_orig_node *orig_node)
  80 {
  81 }
  82
  83 #endif /* CONFIG_BATMAN_ADV_MCAST */
  84
  85 #endif /* _NET_BATMAN_ADV_MULTICAST_H_ */