suricata
util-checksum.h
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1/* Copyright (C) 2011-2012 Open Information Security Foundation
2 *
3 * You can copy, redistribute or modify this Program under the terms of
4 * the GNU General Public License version 2 as published by the Free
5 * Software Foundation.
6 *
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
11 *
12 * You should have received a copy of the GNU General Public License
13 * version 2 along with this program; if not, write to the Free Software
14 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
15 * 02110-1301, USA.
16 */
17
18/**
19 * \file
20 *
21 * \author Eric Leblond <eric@regit.org>
22 */
23
24#ifndef SURICATA_UTIL_CHECKSUM_H
25#define SURICATA_UTIL_CHECKSUM_H
26
27#include "decode.h"
28
30int ChecksumAutoModeCheck(uint64_t thread_count,
31 uint64_t iface_count, uint64_t iface_fail);
32
33/* constant linked with detection of interface with
34 * invalid checksums */
35#define CHECKSUM_SAMPLE_COUNT 1000ULL
36#define CHECKSUM_INVALID_RATIO 10
37
38#endif
int ChecksumAutoModeCheck(uint64_t thread_count, uint64_t iface_count, uint64_t iface_fail)
Check if the number of invalid checksums indicate checksum offloading in place.
int ReCalculateChecksum(Packet *p)