libDwm-0.9.45
DwmIpv4Utils.hh
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1//===========================================================================
2// @(#) $DwmPath$
3//===========================================================================
4// Copyright (c) Daniel W. McRobb 2007
5// All rights reserved.
6//
7// Redistribution and use in source and binary forms, with or without
8// modification, are permitted provided that the following conditions
9// are met:
10//
11// 1. Redistributions of source code must retain the above copyright
12// notice, this list of conditions and the following disclaimer.
13// 2. Redistributions in binary form must reproduce the above copyright
14// notice, this list of conditions and the following disclaimer in the
15// documentation and/or other materials provided with the distribution.
16// 3. The names of the authors and copyright holders may not be used to
17// endorse or promote products derived from this software without
18// specific prior written permission.
19//
20// IN NO EVENT SHALL DANIEL W. MCROBB BE LIABLE TO ANY PARTY FOR
21// DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES,
22// INCLUDING LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE,
23// EVEN IF DANIEL W. MCROBB HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
24// DAMAGE.
25//
26// THE SOFTWARE PROVIDED HEREIN IS ON AN "AS IS" BASIS, AND
27// DANIEL W. MCROBB HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT,
28// UPDATES, ENHANCEMENTS, OR MODIFICATIONS. DANIEL W. MCROBB MAKES NO
29// REPRESENTATIONS AND EXTENDS NO WARRANTIES OF ANY KIND, EITHER
30// IMPLIED OR EXPRESS, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
31// WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE,
32// OR THAT THE USE OF THIS SOFTWARE WILL NOT INFRINGE ANY PATENT,
33// TRADEMARK OR OTHER RIGHTS.
34//===========================================================================
35
36//---------------------------------------------------------------------------
39//---------------------------------------------------------------------------
40
41#ifndef _DWMIPV4UTILS_HH_
42#define _DWMIPV4UTILS_HH_
43
44extern "C" {
45 #include <inttypes.h>
46}
47
48namespace Dwm {
49
50 namespace Ipv4Utils {
51
52 //------------------------------------------------------------------------
55 //------------------------------------------------------------------------
56 uint32_t Sum(const uint8_t *ptr, uint16_t len);
57
58 //------------------------------------------------------------------------
61 //------------------------------------------------------------------------
62 void AddCarries(uint32_t & sum);
63
64 } // namespace Ipv4Utils
65
66} // namespace Dwm
67
68#endif // _DWMIPV4UTILS_HH_
69
70//---------------------------- emacs settings -----------------------------
71// Local Variables:
72// mode: C++
73// tab-width: 2
74// indent-tabs-mode: nil
75// c-basic-offset: 2
76// End:
77//-------------------------------------------------------------------------
uint32_t Sum(const uint8_t *ptr, uint16_t len)
Compute the IP sum (part of checksum computation) of the memory at ptr of length len.
void AddCarries(uint32_t &sum)
Part of IP checksum computation... add the carries and do the 1's complement.