diff options
author | Sven Eckelmann <sven@narfation.org> | 2010-12-13 06:19:28 -0500 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2010-12-16 16:44:24 -0500 |
commit | c6c8fea29769d998d94fcec9b9f14d4b52b349d3 (patch) | |
tree | 2c8dc8d1a64d48c5737a5745e3c510ff53a23047 /net/batman-adv/originator.h | |
parent | b236da6931e2482bfe44a7865dd4e7bb036f3496 (diff) |
net: Add batman-adv meshing protocol
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>
Diffstat (limited to 'net/batman-adv/originator.h')
-rw-r--r-- | net/batman-adv/originator.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/net/batman-adv/originator.h b/net/batman-adv/originator.h new file mode 100644 index 00000000000..d474ceb2a4e --- /dev/null +++ b/net/batman-adv/originator.h | |||
@@ -0,0 +1,64 @@ | |||
1 | /* | ||
2 | * Copyright (C) 2007-2010 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, write to the Free Software | ||
17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA | ||
18 | * 02110-1301, USA | ||
19 | * | ||
20 | */ | ||
21 | |||
22 | #ifndef _NET_BATMAN_ADV_ORIGINATOR_H_ | ||
23 | #define _NET_BATMAN_ADV_ORIGINATOR_H_ | ||
24 | |||
25 | int originator_init(struct bat_priv *bat_priv); | ||
26 | void originator_free(struct bat_priv *bat_priv); | ||
27 | void purge_orig_ref(struct bat_priv *bat_priv); | ||
28 | struct orig_node *get_orig_node(struct bat_priv *bat_priv, uint8_t *addr); | ||
29 | struct neigh_node * | ||
30 | create_neighbor(struct orig_node *orig_node, struct orig_node *orig_neigh_node, | ||
31 | uint8_t *neigh, struct batman_if *if_incoming); | ||
32 | int orig_seq_print_text(struct seq_file *seq, void *offset); | ||
33 | int orig_hash_add_if(struct batman_if *batman_if, int max_if_num); | ||
34 | int orig_hash_del_if(struct batman_if *batman_if, int max_if_num); | ||
35 | |||
36 | |||
37 | /* returns 1 if they are the same originator */ | ||
38 | static inline int compare_orig(void *data1, void *data2) | ||
39 | { | ||
40 | return (memcmp(data1, data2, ETH_ALEN) == 0 ? 1 : 0); | ||
41 | } | ||
42 | |||
43 | /* hashfunction to choose an entry in a hash table of given size */ | ||
44 | /* hash algorithm from http://en.wikipedia.org/wiki/Hash_table */ | ||
45 | static inline int choose_orig(void *data, int32_t size) | ||
46 | { | ||
47 | unsigned char *key = data; | ||
48 | uint32_t hash = 0; | ||
49 | size_t i; | ||
50 | |||
51 | for (i = 0; i < 6; i++) { | ||
52 | hash += key[i]; | ||
53 | hash += (hash << 10); | ||
54 | hash ^= (hash >> 6); | ||
55 | } | ||
56 | |||
57 | hash += (hash << 3); | ||
58 | hash ^= (hash >> 11); | ||
59 | hash += (hash << 15); | ||
60 | |||
61 | return hash % size; | ||
62 | } | ||
63 | |||
64 | #endif /* _NET_BATMAN_ADV_ORIGINATOR_H_ */ | ||