net/batman-adv/originator.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /* Copyright (C) 2007-2017  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
  29 struct netlink_callback;
  30 struct seq_file;
  31 struct sk_buff;
  32
  33 bool batadv_compare_orig(const struct hlist_node *node, const void *data2);
  34 int batadv_originator_init(struct batadv_priv *bat_priv);
  35 void batadv_originator_free(struct batadv_priv *bat_priv);
  36 void batadv_purge_orig_ref(struct batadv_priv *bat_priv);
  37 void batadv_orig_node_put(struct batadv_orig_node *orig_node);
  38 struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv,
  39                                               const u8 *addr);
  40 struct batadv_hardif_neigh_node *
  41 batadv_hardif_neigh_get(const struct batadv_hard_iface *hard_iface,
  42                         const u8 *neigh_addr);
  43 void
  44 batadv_hardif_neigh_put(struct batadv_hardif_neigh_node *hardif_neigh);
  45 struct batadv_neigh_node *
  46 batadv_neigh_node_get_or_create(struct batadv_orig_node *orig_node,
  47                                 struct batadv_hard_iface *hard_iface,
  48                                 const u8 *neigh_addr);
  49 void batadv_neigh_node_put(struct batadv_neigh_node *neigh_node);
  50 struct batadv_neigh_node *
  51 batadv_orig_router_get(struct batadv_orig_node *orig_node,
  52                        const struct batadv_hard_iface *if_outgoing);
  53 struct batadv_neigh_ifinfo *
  54 batadv_neigh_ifinfo_new(struct batadv_neigh_node *neigh,
  55                         struct batadv_hard_iface *if_outgoing);
  56 struct batadv_neigh_ifinfo *
  57 batadv_neigh_ifinfo_get(struct batadv_neigh_node *neigh,
  58                         struct batadv_hard_iface *if_outgoing);
  59 void batadv_neigh_ifinfo_put(struct batadv_neigh_ifinfo *neigh_ifinfo);
  60
  61 int batadv_hardif_neigh_dump(struct sk_buff *msg, struct netlink_callback *cb);
  62 int batadv_hardif_neigh_seq_print_text(struct seq_file *seq, void *offset);
  63
  64 struct batadv_orig_ifinfo *
  65 batadv_orig_ifinfo_get(struct batadv_orig_node *orig_node,
  66                        struct batadv_hard_iface *if_outgoing);
  67 struct batadv_orig_ifinfo *
  68 batadv_orig_ifinfo_new(struct batadv_orig_node *orig_node,
  69                        struct batadv_hard_iface *if_outgoing);
  70 void batadv_orig_ifinfo_put(struct batadv_orig_ifinfo *orig_ifinfo);
  71
  72 int batadv_orig_seq_print_text(struct seq_file *seq, void *offset);
  73 int batadv_orig_dump(struct sk_buff *msg, struct netlink_callback *cb);
  74 int batadv_orig_hardif_seq_print_text(struct seq_file *seq, void *offset);
  75 int batadv_orig_hash_add_if(struct batadv_hard_iface *hard_iface,
  76                             unsigned int max_if_num);
  77 int batadv_orig_hash_del_if(struct batadv_hard_iface *hard_iface,
  78                             unsigned int max_if_num);
  79 struct batadv_orig_node_vlan *
  80 batadv_orig_node_vlan_new(struct batadv_orig_node *orig_node,
  81                           unsigned short vid);
  82 struct batadv_orig_node_vlan *
  83 batadv_orig_node_vlan_get(struct batadv_orig_node *orig_node,
  84                           unsigned short vid);
  85 void 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  */
  95 static 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
 103 struct batadv_orig_node *
 104 batadv_orig_hash_find(struct batadv_priv *bat_priv, const void *data);
 105
 106 #endif /* _NET_BATMAN_ADV_ORIGINATOR_H_ */