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9cfc7bd6 | 1 | /* Copyright (C) 2007-2012 B.A.T.M.A.N. contributors: |
c6c8fea2 SE |
2 | * |
3 | * 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 | |
c6c8fea2 SE |
18 | */ |
19 | ||
20 | #include "main.h" | |
21 | #include "ring_buffer.h" | |
22 | ||
925a6672 SE |
23 | void batadv_ring_buffer_set(uint8_t lq_recv[], uint8_t *lq_index, |
24 | uint8_t value) | |
c6c8fea2 SE |
25 | { |
26 | lq_recv[*lq_index] = value; | |
42d0b044 | 27 | *lq_index = (*lq_index + 1) % BATADV_TQ_GLOBAL_WINDOW_SIZE; |
c6c8fea2 SE |
28 | } |
29 | ||
925a6672 | 30 | uint8_t batadv_ring_buffer_avg(const uint8_t lq_recv[]) |
c6c8fea2 | 31 | { |
747e4221 | 32 | const uint8_t *ptr; |
c6c8fea2 SE |
33 | uint16_t count = 0, i = 0, sum = 0; |
34 | ||
35 | ptr = lq_recv; | |
36 | ||
42d0b044 | 37 | while (i < BATADV_TQ_GLOBAL_WINDOW_SIZE) { |
c6c8fea2 SE |
38 | if (*ptr != 0) { |
39 | count++; | |
40 | sum += *ptr; | |
41 | } | |
42 | ||
43 | i++; | |
44 | ptr++; | |
45 | } | |
46 | ||
47 | if (count == 0) | |
48 | return 0; | |
49 | ||
50 | return (uint8_t)(sum / count); | |
51 | } |