linux/net/batman-adv/bitarray.h

/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (C) B.A.T.M.A.N. contributors:
 *
 * Simon Wunderlich, Marek Lindner
 */

#ifndef _NET_BATMAN_ADV_BITARRAY_H_
#define _NET_BATMAN_ADV_BITARRAY_H_

#include "main.h"

#include <linux/bitops.h>
#include <linux/compiler.h>
#include <linux/stddef.h>
#include <linux/types.h>

/**
 * batadv_test_bit() - check if bit is set in the current window
 *
 * @seq_bits: pointer to the sequence number receive packet
 * @last_seqno: latest sequence number in seq_bits
 * @curr_seqno: sequence number to test for
 *
 * Return: true if the corresponding bit in the given seq_bits indicates true
 * and curr_seqno is within range of last_seqno. Otherwise returns false.
 */
static inline bool batadv_test_bit(const unsigned long *seq_bits,
				   u32 last_seqno, u32 curr_seqno)
{ … }

/**
 * batadv_set_bit() - Turn corresponding bit on, so we can remember that we got
 *  the packet
 * @seq_bits: bitmap of the packet receive window
 * @n: relative sequence number of newly received packet
 */
static inline void batadv_set_bit(unsigned long *seq_bits, s32 n)
{ … }

bool batadv_bit_get_packet(void *priv, unsigned long *seq_bits,
			   s32 seq_num_diff, int set_mark);

#endif /* _NET_BATMAN_ADV_BITARRAY_H_ */