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Code Issues Releases Wiki Activity

Fixed ICMPv6 checksum calculation.

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This commit is contained in:
Matias Fontanini
2014-06-09 10:09:20 -03:00
parent 201ea885a1
commit c9e955903e
4 changed files with 48 additions and 23 deletions
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16
src/utils.cpp
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@@ -184,12 +184,16 @@ uint32_t pseudoheader_checksum(IPv4Address source_ip, IPv4Address dest_ip, uint3
}
uint32_t pseudoheader_checksum(IPv6Address source_ip, IPv6Address dest_ip, uint32_t len, uint32_t flag) {
uint32_t checksum = 0;
IPv6Address::const_iterator it;
for(it = source_ip.begin(); it != source_ip.end(); ++it)
checksum += *it;
for(it = dest_ip.begin(); it != dest_ip.end(); ++it)
checksum += *it;
uint32_t checksum(0);
uint16_t *ptr = (uint16_t*) source_ip.begin();
uint16_t *end = (uint16_t*) source_ip.end();
while(ptr < end)
checksum += (uint32_t) Endian::be_to_host(*ptr++);
ptr = (uint16_t*) dest_ip.begin();
end = (uint16_t*) dest_ip.end();
while(ptr < end)
checksum += (uint32_t) Endian::be_to_host(*ptr++);
checksum += flag + len;
return checksum;
}