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B.A.T.M.A.N. IV requires the number of rebroadcast from a neighboring originator. These statistics are gathered per interface which transmitted the OGM (and then received it again). Since an originator is not interface specific, a resizable array was used in each originator. This resizable array had an entry for each interface and had to be resizes (for all OGMs) when the number of active interface was modified. This could cause problems when a large number of interface is added and not enough continuous memory is available to allocate the array. There is already a per interface originator structure "batadv_orig_ifinfo" which can be used to store this information. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
103 lines
3.8 KiB
C
103 lines
3.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (C) 2007-2018 B.A.T.M.A.N. contributors:
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*
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* Marek Lindner, Simon Wunderlich
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of version 2 of the GNU General Public
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* License as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _NET_BATMAN_ADV_ORIGINATOR_H_
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#define _NET_BATMAN_ADV_ORIGINATOR_H_
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#include "main.h"
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#include <linux/compiler.h>
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#include <linux/if_ether.h>
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#include <linux/jhash.h>
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#include <linux/types.h>
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struct netlink_callback;
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struct seq_file;
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struct sk_buff;
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bool batadv_compare_orig(const struct hlist_node *node, const void *data2);
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int batadv_originator_init(struct batadv_priv *bat_priv);
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void batadv_originator_free(struct batadv_priv *bat_priv);
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void batadv_purge_orig_ref(struct batadv_priv *bat_priv);
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void batadv_orig_node_put(struct batadv_orig_node *orig_node);
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struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv,
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const u8 *addr);
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struct batadv_hardif_neigh_node *
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batadv_hardif_neigh_get(const struct batadv_hard_iface *hard_iface,
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const u8 *neigh_addr);
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void
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batadv_hardif_neigh_put(struct batadv_hardif_neigh_node *hardif_neigh);
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struct batadv_neigh_node *
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batadv_neigh_node_get_or_create(struct batadv_orig_node *orig_node,
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struct batadv_hard_iface *hard_iface,
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const u8 *neigh_addr);
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void batadv_neigh_node_put(struct batadv_neigh_node *neigh_node);
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struct batadv_neigh_node *
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batadv_orig_router_get(struct batadv_orig_node *orig_node,
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const struct batadv_hard_iface *if_outgoing);
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struct batadv_neigh_ifinfo *
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batadv_neigh_ifinfo_new(struct batadv_neigh_node *neigh,
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struct batadv_hard_iface *if_outgoing);
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struct batadv_neigh_ifinfo *
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batadv_neigh_ifinfo_get(struct batadv_neigh_node *neigh,
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struct batadv_hard_iface *if_outgoing);
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void batadv_neigh_ifinfo_put(struct batadv_neigh_ifinfo *neigh_ifinfo);
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int batadv_hardif_neigh_dump(struct sk_buff *msg, struct netlink_callback *cb);
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int batadv_hardif_neigh_seq_print_text(struct seq_file *seq, void *offset);
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struct batadv_orig_ifinfo *
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batadv_orig_ifinfo_get(struct batadv_orig_node *orig_node,
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struct batadv_hard_iface *if_outgoing);
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struct batadv_orig_ifinfo *
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batadv_orig_ifinfo_new(struct batadv_orig_node *orig_node,
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struct batadv_hard_iface *if_outgoing);
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void batadv_orig_ifinfo_put(struct batadv_orig_ifinfo *orig_ifinfo);
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int batadv_orig_seq_print_text(struct seq_file *seq, void *offset);
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int batadv_orig_dump(struct sk_buff *msg, struct netlink_callback *cb);
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int batadv_orig_hardif_seq_print_text(struct seq_file *seq, void *offset);
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struct batadv_orig_node_vlan *
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batadv_orig_node_vlan_new(struct batadv_orig_node *orig_node,
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unsigned short vid);
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struct batadv_orig_node_vlan *
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batadv_orig_node_vlan_get(struct batadv_orig_node *orig_node,
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unsigned short vid);
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void batadv_orig_node_vlan_put(struct batadv_orig_node_vlan *orig_vlan);
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/**
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* batadv_choose_orig() - Return the index of the orig entry in the hash table
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* @data: mac address of the originator node
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* @size: the size of the hash table
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*
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* Return: the hash index where the object represented by @data should be
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* stored at.
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*/
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static inline u32 batadv_choose_orig(const void *data, u32 size)
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{
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u32 hash = 0;
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hash = jhash(data, ETH_ALEN, hash);
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return hash % size;
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}
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struct batadv_orig_node *
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batadv_orig_hash_find(struct batadv_priv *bat_priv, const void *data);
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#endif /* _NET_BATMAN_ADV_ORIGINATOR_H_ */
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