bitarray.h (0f5f9322681887ca221707afafe4216b6db5d22f) bitarray.h (9cfc7bd608b97463993b4f3e4775d99022253f8d)
1/*
2 * Copyright (C) 2006-2012 B.A.T.M.A.N. contributors:
1/* Copyright (C) 2006-2012 B.A.T.M.A.N. contributors:
3 *
4 * Simon Wunderlich, Marek Lindner
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
2 *
3 * Simon Wunderlich, Marek Lindner
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of version 2 of the GNU General Public
7 * License as published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
17 * 02110-1301, USA
19 *
20 */
21
22#ifndef _NET_BATMAN_ADV_BITARRAY_H_
23#define _NET_BATMAN_ADV_BITARRAY_H_
24
25/* returns true if the corresponding bit in the given seq_bits indicates true
18 */
19
20#ifndef _NET_BATMAN_ADV_BITARRAY_H_
21#define _NET_BATMAN_ADV_BITARRAY_H_
22
23/* returns true if the corresponding bit in the given seq_bits indicates true
26 * and curr_seqno is within range of last_seqno */
24 * and curr_seqno is within range of last_seqno
25 */
27static inline int bat_test_bit(const unsigned long *seq_bits,
28 uint32_t last_seqno, uint32_t curr_seqno)
29{
30 int32_t diff;
31
32 diff = last_seqno - curr_seqno;
33 if (diff < 0 || diff >= TQ_LOCAL_WINDOW_SIZE)
34 return 0;

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42 /* if too old, just drop it */
43 if (n < 0 || n >= TQ_LOCAL_WINDOW_SIZE)
44 return;
45
46 set_bit(n, seq_bits); /* turn the position on */
47}
48
49/* receive and process one packet, returns 1 if received seq_num is considered
26static inline int bat_test_bit(const unsigned long *seq_bits,
27 uint32_t last_seqno, uint32_t curr_seqno)
28{
29 int32_t diff;
30
31 diff = last_seqno - curr_seqno;
32 if (diff < 0 || diff >= TQ_LOCAL_WINDOW_SIZE)
33 return 0;

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41 /* if too old, just drop it */
42 if (n < 0 || n >= TQ_LOCAL_WINDOW_SIZE)
43 return;
44
45 set_bit(n, seq_bits); /* turn the position on */
46}
47
48/* receive and process one packet, returns 1 if received seq_num is considered
50 * new, 0 if old */
49 * new, 0 if old
50 */
51int batadv_bit_get_packet(void *priv, unsigned long *seq_bits,
52 int32_t seq_num_diff, int set_mark);
53
54#endif /* _NET_BATMAN_ADV_BITARRAY_H_ */
51int batadv_bit_get_packet(void *priv, unsigned long *seq_bits,
52 int32_t seq_num_diff, int set_mark);
53
54#endif /* _NET_BATMAN_ADV_BITARRAY_H_ */