c6c8fea297
B.A.T.M.A.N. (better approach to mobile ad-hoc networking) is a routing protocol for multi-hop ad-hoc mesh networks. The networks may be wired or wireless. See http://www.open-mesh.org/ for more information and user space tools. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
64 lines
2 KiB
C
64 lines
2 KiB
C
/*
|
|
* Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
|
|
*
|
|
* Marek Lindner, Simon Wunderlich
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of version 2 of the GNU General Public
|
|
* License as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
|
* 02110-1301, USA
|
|
*
|
|
*/
|
|
|
|
#ifndef _NET_BATMAN_ADV_ORIGINATOR_H_
|
|
#define _NET_BATMAN_ADV_ORIGINATOR_H_
|
|
|
|
int originator_init(struct bat_priv *bat_priv);
|
|
void originator_free(struct bat_priv *bat_priv);
|
|
void purge_orig_ref(struct bat_priv *bat_priv);
|
|
struct orig_node *get_orig_node(struct bat_priv *bat_priv, uint8_t *addr);
|
|
struct neigh_node *
|
|
create_neighbor(struct orig_node *orig_node, struct orig_node *orig_neigh_node,
|
|
uint8_t *neigh, struct batman_if *if_incoming);
|
|
int orig_seq_print_text(struct seq_file *seq, void *offset);
|
|
int orig_hash_add_if(struct batman_if *batman_if, int max_if_num);
|
|
int orig_hash_del_if(struct batman_if *batman_if, int max_if_num);
|
|
|
|
|
|
/* returns 1 if they are the same originator */
|
|
static inline int compare_orig(void *data1, void *data2)
|
|
{
|
|
return (memcmp(data1, data2, ETH_ALEN) == 0 ? 1 : 0);
|
|
}
|
|
|
|
/* hashfunction to choose an entry in a hash table of given size */
|
|
/* hash algorithm from http://en.wikipedia.org/wiki/Hash_table */
|
|
static inline int choose_orig(void *data, int32_t size)
|
|
{
|
|
unsigned char *key = data;
|
|
uint32_t hash = 0;
|
|
size_t i;
|
|
|
|
for (i = 0; i < 6; i++) {
|
|
hash += key[i];
|
|
hash += (hash << 10);
|
|
hash ^= (hash >> 6);
|
|
}
|
|
|
|
hash += (hash << 3);
|
|
hash ^= (hash >> 11);
|
|
hash += (hash << 15);
|
|
|
|
return hash % size;
|
|
}
|
|
|
|
#endif /* _NET_BATMAN_ADV_ORIGINATOR_H_ */
|