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