2 * Copyright (C) 2006-2010 B.A.T.M.A.N. contributors:
4 * Simon Wunderlich, Marek Lindner
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.
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.
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
22 #ifndef _NET_BATMAN_ADV_BITARRAY_H_
23 #define _NET_BATMAN_ADV_BITARRAY_H_
25 /* you should choose something big, if you don't want to waste cpu
26 * and keep the type in sync with bit_packet_count */
27 #define TYPE_OF_WORD unsigned long
28 #define WORD_BIT_SIZE (sizeof(TYPE_OF_WORD) * 8)
30 /* returns true if the corresponding bit in the given seq_bits indicates true
31 * and curr_seqno is within range of last_seqno */
32 uint8_t get_bit_status(TYPE_OF_WORD *seq_bits, uint32_t last_seqno,
35 /* turn corresponding bit on, so we can remember that we got the packet */
36 void bit_mark(TYPE_OF_WORD *seq_bits, int32_t n);
39 /* receive and process one packet, returns 1 if received seq_num is considered
41 char bit_get_packet(void *priv, TYPE_OF_WORD *seq_bits,
42 int32_t seq_num_diff, int8_t set_mark);
44 /* count the hamming weight, how many good packets did we receive? */
45 int bit_packet_count(TYPE_OF_WORD *seq_bits);
47 #endif /* _NET_BATMAN_ADV_BITARRAY_H_ */