Root/
1 | /* Copyright (C) 2006-2013 B.A.T.M.A.N. contributors: |
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 |
18 | */ |
19 | |
20 | #ifndef _NET_BATMAN_ADV_BITARRAY_H_ |
21 | #define _NET_BATMAN_ADV_BITARRAY_H_ |
22 | |
23 | /* Returns 1 if the corresponding bit in the given seq_bits indicates true |
24 | * and curr_seqno is within range of last_seqno. Otherwise returns 0. |
25 | */ |
26 | static inline int batadv_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 >= BATADV_TQ_LOCAL_WINDOW_SIZE) |
33 | return 0; |
34 | else |
35 | return test_bit(diff, seq_bits) != 0; |
36 | } |
37 | |
38 | /* turn corresponding bit on, so we can remember that we got the packet */ |
39 | static inline void batadv_set_bit(unsigned long *seq_bits, int32_t n) |
40 | { |
41 | /* if too old, just drop it */ |
42 | if (n < 0 || n >= BATADV_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 |
49 | * new, 0 if old |
50 | */ |
51 | int 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_ */ |
55 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9