1 /* 2 * Copyright (C) 2006-2011 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 19 * 20 */ 21 22 #ifndef _NET_BATMAN_ADV_BITARRAY_H_ 23 #define _NET_BATMAN_ADV_BITARRAY_H_ 24 25 #define WORD_BIT_SIZE (sizeof(unsigned long) * 8) 26 27 /* returns true if the corresponding bit in the given seq_bits indicates true 28 * and curr_seqno is within range of last_seqno */ 29 uint8_t get_bit_status(unsigned long *seq_bits, uint32_t last_seqno, 30 uint32_t curr_seqno); 31 32 /* turn corresponding bit on, so we can remember that we got the packet */ 33 void bit_mark(unsigned long *seq_bits, int32_t n); 34 35 36 /* receive and process one packet, returns 1 if received seq_num is considered 37 * new, 0 if old */ 38 char bit_get_packet(void *priv, unsigned long *seq_bits, 39 int32_t seq_num_diff, int8_t set_mark); 40 41 /* count the hamming weight, how many good packets did we receive? */ 42 int bit_packet_count(unsigned long *seq_bits); 43 44 #endif /* _NET_BATMAN_ADV_BITARRAY_H_ */ 45