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

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/* Copyright (C) 2007-2018  B.A.T.M.A.N. contributors:
   3 *
   4 * Marek Lindner, Simon Wunderlich
   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_ORIGINATOR_H_
  20#define _NET_BATMAN_ADV_ORIGINATOR_H_
  21
  22#include "main.h"
  23
  24#include <linux/compiler.h>
  25#include <linux/if_ether.h>
  26#include <linux/jhash.h>
  27#include <linux/types.h>
  28
  29struct netlink_callback;
  30struct seq_file;
  31struct sk_buff;
  32
  33bool batadv_compare_orig(const struct hlist_node *node, const void *data2);
  34int batadv_originator_init(struct batadv_priv *bat_priv);
  35void batadv_originator_free(struct batadv_priv *bat_priv);
  36void batadv_purge_orig_ref(struct batadv_priv *bat_priv);
  37void batadv_orig_node_put(struct batadv_orig_node *orig_node);
  38struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv,
  39                                              const u8 *addr);
  40struct batadv_hardif_neigh_node *
  41batadv_hardif_neigh_get(const struct batadv_hard_iface *hard_iface,
  42                        const u8 *neigh_addr);
  43void
  44batadv_hardif_neigh_put(struct batadv_hardif_neigh_node *hardif_neigh);
  45struct batadv_neigh_node *
  46batadv_neigh_node_get_or_create(struct batadv_orig_node *orig_node,
  47                                struct batadv_hard_iface *hard_iface,
  48                                const u8 *neigh_addr);
  49void batadv_neigh_node_put(struct batadv_neigh_node *neigh_node);
  50struct batadv_neigh_node *
  51batadv_orig_router_get(struct batadv_orig_node *orig_node,
  52                       const struct batadv_hard_iface *if_outgoing);
  53struct batadv_neigh_ifinfo *
  54batadv_neigh_ifinfo_new(struct batadv_neigh_node *neigh,
  55                        struct batadv_hard_iface *if_outgoing);
  56struct batadv_neigh_ifinfo *
  57batadv_neigh_ifinfo_get(struct batadv_neigh_node *neigh,
  58                        struct batadv_hard_iface *if_outgoing);
  59void batadv_neigh_ifinfo_put(struct batadv_neigh_ifinfo *neigh_ifinfo);
  60
  61int batadv_hardif_neigh_dump(struct sk_buff *msg, struct netlink_callback *cb);
  62int batadv_hardif_neigh_seq_print_text(struct seq_file *seq, void *offset);
  63
  64struct batadv_orig_ifinfo *
  65batadv_orig_ifinfo_get(struct batadv_orig_node *orig_node,
  66                       struct batadv_hard_iface *if_outgoing);
  67struct batadv_orig_ifinfo *
  68batadv_orig_ifinfo_new(struct batadv_orig_node *orig_node,
  69                       struct batadv_hard_iface *if_outgoing);
  70void batadv_orig_ifinfo_put(struct batadv_orig_ifinfo *orig_ifinfo);
  71
  72int batadv_orig_seq_print_text(struct seq_file *seq, void *offset);
  73int batadv_orig_dump(struct sk_buff *msg, struct netlink_callback *cb);
  74int batadv_orig_hardif_seq_print_text(struct seq_file *seq, void *offset);
  75int batadv_orig_hash_add_if(struct batadv_hard_iface *hard_iface,
  76                            unsigned int max_if_num);
  77int batadv_orig_hash_del_if(struct batadv_hard_iface *hard_iface,
  78                            unsigned int max_if_num);
  79struct batadv_orig_node_vlan *
  80batadv_orig_node_vlan_new(struct batadv_orig_node *orig_node,
  81                          unsigned short vid);
  82struct batadv_orig_node_vlan *
  83batadv_orig_node_vlan_get(struct batadv_orig_node *orig_node,
  84                          unsigned short vid);
  85void batadv_orig_node_vlan_put(struct batadv_orig_node_vlan *orig_vlan);
  86
  87/**
  88 * batadv_choose_orig() - Return the index of the orig entry in the hash table
  89 * @data: mac address of the originator node
  90 * @size: the size of the hash table
  91 *
  92 * Return: the hash index where the object represented by @data should be
  93 * stored at.
  94 */
  95static inline u32 batadv_choose_orig(const void *data, u32 size)
  96{
  97        u32 hash = 0;
  98
  99        hash = jhash(data, ETH_ALEN, hash);
 100        return hash % size;
 101}
 102
 103struct batadv_orig_node *
 104batadv_orig_hash_find(struct batadv_priv *bat_priv, const void *data);
 105
 106#endif /* _NET_BATMAN_ADV_ORIGINATOR_H_ */
 107