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Architecture
Core
Execute
FileSystem
Files
GUI
Library
Network
AddressResolutionProtocol.cpp
Checksum.cpp
DomainNameSystem.cpp
DynamicHostConfigurationProtocol.cpp
Ethernet.cpp
InternetControlMessageProtocol.cpp
InternetProtocol.cpp
NetworkController.cpp
NetworkDebugger.cpp
NetworkTimeProtocol.cpp
TransmissionControlProtocol.cpp
UserDatagramProtocol.cpp
Profiling
Recovery
SystemCalls
Tasking
Tests
include
.gitignore
DAPI.hpp
Doxyfile
Fex.hpp
KConfig.cpp
KThread.cpp
Kernel.cpp
LICENSE
Makefile
README.md
dump.sh
ipc.h
kernel.h
syscalls.h
15 lines
543 B
C++
15 lines
543 B
C++
#include <net/net.hpp>
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uint16_t CalculateChecksum(uint16_t *Data, uint64_t Length)
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{
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uint16_t *Data16 = (uint16_t *)Data;
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uint64_t Checksum = 0;
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for (uint64_t i = 0; i < Length / 2; i++)
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Checksum += ((Data16[i] & 0xFF00) >> 8) | ((Data16[i] & 0x00FF) << 8);
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if (Length % 2)
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Checksum += ((uint16_t)((char *)Data16)[Length - 1]) << 8;
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while (Checksum & 0xFFFF0000)
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Checksum = (Checksum & 0xFFFF) + (Checksum >> 16);
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return (uint16_t)(((~Checksum & 0xFF00) >> 8) | ((~Checksum & 0x00FF) << 8));
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}
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