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 
29 int ReCalculateChecksum(Packet *p);
30 int 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
ReCalculateChecksum
int ReCalculateChecksum(Packet *p)
Definition: util-checksum.c:29
ChecksumAutoModeCheck
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.
Definition: util-checksum.c:69
decode.h
Packet_
Definition: decode.h:473