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ebf38fb7ab
As suggested by checkpatch, remove all the references to the FSF address since the kernel already has one reference in its documentation. In this way it is easier to update it in case of future changes. Signed-off-by: Antonio Quartulli <antonio@meshcoding.com> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
52 lines
1.7 KiB
C
52 lines
1.7 KiB
C
/* Copyright (C) 2006-2013 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, see <http://www.gnu.org/licenses/>.
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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 1 if the corresponding bit in the given seq_bits indicates true
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* and curr_seqno is within range of last_seqno. Otherwise returns 0.
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*/
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static inline int batadv_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 >= BATADV_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) != 0;
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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 batadv_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 >= BATADV_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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