diff options
Diffstat (limited to 'net/batman-adv/bitarray.c')
| -rw-r--r-- | net/batman-adv/bitarray.c | 52 |
1 files changed, 23 insertions, 29 deletions
diff --git a/net/batman-adv/bitarray.c b/net/batman-adv/bitarray.c index 973982414d58..2c49b2711650 100644 --- a/net/batman-adv/bitarray.c +++ b/net/batman-adv/bitarray.c @@ -1,29 +1,18 @@ -/* Copyright (C) 2006-2013 B.A.T.M.A.N. contributors: +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (C) 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 */ -#include "main.h" #include "bitarray.h" +#include "main.h" + +#include <linux/bitmap.h> -#include <linux/bitops.h> +#include "log.h" /* shift the packet array by n places. */ -static void batadv_bitmap_shift_left(unsigned long *seq_bits, int32_t n) +static void batadv_bitmap_shift_left(unsigned long *seq_bits, s32 n) { if (n <= 0 || n >= BATADV_TQ_LOCAL_WINDOW_SIZE) return; @@ -31,15 +20,20 @@ static void batadv_bitmap_shift_left(unsigned long *seq_bits, int32_t n) bitmap_shift_left(seq_bits, seq_bits, n, BATADV_TQ_LOCAL_WINDOW_SIZE); } - -/* receive and process one packet within the sequence number window. +/** + * batadv_bit_get_packet() - receive and process one packet within the sequence + * number window + * @priv: the bat priv with all the mesh interface information + * @seq_bits: pointer to the sequence number receive packet + * @seq_num_diff: difference between the current/received sequence number and + * the last sequence number + * @set_mark: whether this packet should be marked in seq_bits * - * returns: - * 1 if the window was moved (either new or very old) - * 0 if the window was not moved/shifted. + * Return: true if the window was moved (either new or very old), + * false if the window was not moved/shifted. */ -int batadv_bit_get_packet(void *priv, unsigned long *seq_bits, - int32_t seq_num_diff, int set_mark) +bool batadv_bit_get_packet(void *priv, unsigned long *seq_bits, + s32 seq_num_diff, int set_mark) { struct batadv_priv *bat_priv = priv; @@ -49,7 +43,7 @@ int batadv_bit_get_packet(void *priv, unsigned long *seq_bits, if (seq_num_diff <= 0 && seq_num_diff > -BATADV_TQ_LOCAL_WINDOW_SIZE) { if (set_mark) batadv_set_bit(seq_bits, -seq_num_diff); - return 0; + return false; } /* sequence number is slightly newer, so we shift the window and @@ -60,7 +54,7 @@ int batadv_bit_get_packet(void *priv, unsigned long *seq_bits, if (set_mark) batadv_set_bit(seq_bits, 0); - return 1; + return true; } /* sequence number is much newer, probably missed a lot of packets */ @@ -72,7 +66,7 @@ int batadv_bit_get_packet(void *priv, unsigned long *seq_bits, bitmap_zero(seq_bits, BATADV_TQ_LOCAL_WINDOW_SIZE); if (set_mark) batadv_set_bit(seq_bits, 0); - return 1; + return true; } /* received a much older packet. The other host either restarted @@ -91,5 +85,5 @@ int batadv_bit_get_packet(void *priv, unsigned long *seq_bits, if (set_mark) batadv_set_bit(seq_bits, 0); - return 1; + return true; } |