/* Copyright (C) 2006-2013 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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * 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 */ #ifndef _NET_BATMAN_ADV_BITARRAY_H_#define _NET_BATMAN_ADV_BITARRAY_H_ /* Returns 1 if the corresponding bit in the given seq_bits indicates true * and curr_seqno is within range of last_seqno. Otherwise returns 0. */static inline int batadv_test_bit(const unsigned long *seq_bits,				  uint32_t last_seqno, uint32_t curr_seqno){	int32_t diff; 	diff = last_seqno - curr_seqno;	if (diff < 0 || diff >= BATADV_TQ_LOCAL_WINDOW_SIZE)		return 0;	else		return test_bit(diff, seq_bits) != 0;} /* turn corresponding bit on, so we can remember that we got the packet */static inline void batadv_set_bit(unsigned long *seq_bits, int32_t n){	/* if too old, just drop it */	if (n < 0 || n >= BATADV_TQ_LOCAL_WINDOW_SIZE)		return; 	set_bit(n, seq_bits); /* turn the position on */} /* receive and process one packet, returns 1 if received seq_num is considered * new, 0 if old */int batadv_bit_get_packet(void *priv, unsigned long *seq_bits,			  int32_t seq_num_diff, int set_mark); #endif /* _NET_BATMAN_ADV_BITARRAY_H_ */