LXR linux/net/batman-adv/multicast.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/* Copyright (C) 2014-2018  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
  24struct netlink_callback;
  25struct seq_file;
  26struct sk_buff;
  27
  28/**
  29 * enum batadv_forw_mode - the way a packet should be forwarded as
  30 */
  31enum batadv_forw_mode {
  32        /**
  33         * @BATADV_FORW_ALL: forward the packet to all nodes (currently via
  34         *  classic flooding)
  35         */
  36        BATADV_FORW_ALL,
  37
  38        /**
  39         * @BATADV_FORW_SINGLE: forward the packet to a single node (currently
  40         *  via the BATMAN unicast routing protocol)
  41         */
  42        BATADV_FORW_SINGLE,
  43
  44        /** @BATADV_FORW_NONE: don't forward, drop it */
  45        BATADV_FORW_NONE,
  46};
  47
  48#ifdef CONFIG_BATMAN_ADV_MCAST
  49
  50enum batadv_forw_mode
  51batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
  52                       struct batadv_orig_node **mcast_single_orig);
  53
  54void batadv_mcast_init(struct batadv_priv *bat_priv);
  55
  56int batadv_mcast_flags_seq_print_text(struct seq_file *seq, void *offset);
  57
  58int batadv_mcast_mesh_info_put(struct sk_buff *msg,
  59                               struct batadv_priv *bat_priv);
  60
  61int batadv_mcast_flags_dump(struct sk_buff *msg, struct netlink_callback *cb);
  62
  63void batadv_mcast_free(struct batadv_priv *bat_priv);
  64
  65void batadv_mcast_purge_orig(struct batadv_orig_node *orig_node);
  66
  67#else
  68
  69static inline enum batadv_forw_mode
  70batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
  71                       struct batadv_orig_node **mcast_single_orig)
  72{
  73        return BATADV_FORW_ALL;
  74}
  75
  76static inline int batadv_mcast_init(struct batadv_priv *bat_priv)
  77{
  78        return 0;
  79}
  80
  81static inline int
  82batadv_mcast_mesh_info_put(struct sk_buff *msg, struct batadv_priv *bat_priv)
  83{
  84        return 0;
  85}
  86
  87static inline int batadv_mcast_flags_dump(struct sk_buff *msg,
  88                                          struct netlink_callback *cb)
  89{
  90        return -EOPNOTSUPP;
  91}
  92
  93static inline void batadv_mcast_free(struct batadv_priv *bat_priv)
  94{
  95}
  96
  97static inline void batadv_mcast_purge_orig(struct batadv_orig_node *orig_node)
  98{
  99}
 100
 101#endif /* CONFIG_BATMAN_ADV_MCAST */
 102
 103#endif /* _NET_BATMAN_ADV_MULTICAST_H_ */
 104