LXR linux/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#include <linux/netlink.h>
  13#include <linux/seq_file.h>
  14#include <linux/skbuff.h>
  15
  16/**
  17 * enum batadv_forw_mode - the way a packet should be forwarded as
  18 */
  19enum 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_SOME: forward the packet to some nodes (currently via
  28         *  a multicast-to-unicast conversion and the BATMAN unicast routing
  29         *  protocol)
  30         */
  31        BATADV_FORW_SOME,
  32
  33        /**
  34         * @BATADV_FORW_SINGLE: forward the packet to a single node (currently
  35         *  via the BATMAN unicast routing protocol)
  36         */
  37        BATADV_FORW_SINGLE,
  38
  39        /** @BATADV_FORW_NONE: don't forward, drop it */
  40        BATADV_FORW_NONE,
  41};
  42
  43#ifdef CONFIG_BATMAN_ADV_MCAST
  44
  45enum batadv_forw_mode
  46batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
  47                       struct batadv_orig_node **mcast_single_orig);
  48
  49int batadv_mcast_forw_send(struct batadv_priv *bat_priv, struct sk_buff *skb,
  50                           unsigned short vid);
  51
  52void batadv_mcast_init(struct batadv_priv *bat_priv);
  53
  54int batadv_mcast_flags_seq_print_text(struct seq_file *seq, void *offset);
  55
  56int batadv_mcast_mesh_info_put(struct sk_buff *msg,
  57                               struct batadv_priv *bat_priv);
  58
  59int batadv_mcast_flags_dump(struct sk_buff *msg, struct netlink_callback *cb);
  60
  61void batadv_mcast_free(struct batadv_priv *bat_priv);
  62
  63void batadv_mcast_purge_orig(struct batadv_orig_node *orig_node);
  64
  65#else
  66
  67static inline enum batadv_forw_mode
  68batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb,
  69                       struct batadv_orig_node **mcast_single_orig)
  70{
  71        return BATADV_FORW_ALL;
  72}
  73
  74static inline int
  75batadv_mcast_forw_send(struct batadv_priv *bat_priv, struct sk_buff *skb,
  76                       unsigned short vid)
  77{
  78        kfree_skb(skb);
  79        return NET_XMIT_DROP;
  80}
  81
  82static inline int batadv_mcast_init(struct batadv_priv *bat_priv)
  83{
  84        return 0;
  85}
  86
  87static inline int
  88batadv_mcast_mesh_info_put(struct sk_buff *msg, struct batadv_priv *bat_priv)
  89{
  90        return 0;
  91}
  92
  93static inline int batadv_mcast_flags_dump(struct sk_buff *msg,
  94                                          struct netlink_callback *cb)
  95{
  96        return -EOPNOTSUPP;
  97}
  98
  99static inline void batadv_mcast_free(struct batadv_priv *bat_priv)
 100{
 101}
 102
 103static inline void batadv_mcast_purge_orig(struct batadv_orig_node *orig_node)
 104{
 105}
 106
 107#endif /* CONFIG_BATMAN_ADV_MCAST */
 108
 109#endif /* _NET_BATMAN_ADV_MULTICAST_H_ */
 110