blob: 76ad24c9f3de6fae91b1ef256c70fbbb64aa8a04 [file] [log] [blame]
* Copyright (C) 2006-2010 B.A.T.M.A.N. contributors:
* Simon Wunderlich, Marek Lindner
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public
* License as published by the Free Software Foundation.
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA
/* you should choose something big, if you don't want to waste cpu */
#define TYPE_OF_WORD unsigned long
#define WORD_BIT_SIZE (sizeof(TYPE_OF_WORD) * 8)
/* returns true if the corresponding bit in the given seq_bits indicates true
* and curr_seqno is within range of last_seqno */
uint8_t get_bit_status(TYPE_OF_WORD *seq_bits, uint16_t last_seqno,
uint16_t curr_seqno);
/* turn corresponding bit on, so we can remember that we got the packet */
void bit_mark(TYPE_OF_WORD *seq_bits, int32_t n);
/* shift the packet array by n places. */
void bit_shift(TYPE_OF_WORD *seq_bits, int32_t n);
/* receive and process one packet, returns 1 if received seq_num is considered
* new, 0 if old */
char bit_get_packet(TYPE_OF_WORD *seq_bits, int16_t seq_num_diff,
int8_t set_mark);
/* count the hamming weight, how many good packets did we receive? */
int bit_packet_count(TYPE_OF_WORD *seq_bits);