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9cfc7bd608
batman-adv doesn't follow the style for multiline comments that David S. Miller prefers. All comments should be reformatted to follow this consistent style to make the code slightly more readable. Signed-off-by: Sven Eckelmann <sven@narfation.org>
55 lines
1.7 KiB
C
55 lines
1.7 KiB
C
/* Copyright (C) 2006-2012 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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#ifndef _NET_BATMAN_ADV_BITARRAY_H_
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#define _NET_BATMAN_ADV_BITARRAY_H_
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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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*/
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static inline int bat_test_bit(const unsigned long *seq_bits,
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uint32_t last_seqno, uint32_t curr_seqno)
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{
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int32_t diff;
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diff = last_seqno - curr_seqno;
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if (diff < 0 || diff >= TQ_LOCAL_WINDOW_SIZE)
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return 0;
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else
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return test_bit(diff, seq_bits);
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}
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/* turn corresponding bit on, so we can remember that we got the packet */
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static inline void bat_set_bit(unsigned long *seq_bits, int32_t n)
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{
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/* if too old, just drop it */
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if (n < 0 || n >= TQ_LOCAL_WINDOW_SIZE)
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return;
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set_bit(n, seq_bits); /* turn the position on */
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}
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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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*/
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int batadv_bit_get_packet(void *priv, unsigned long *seq_bits,
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int32_t seq_num_diff, int set_mark);
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#endif /* _NET_BATMAN_ADV_BITARRAY_H_ */
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