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Always calculate IP checksum

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Fixes #105
This commit is contained in:
Matias Fontanini
2015-11-08 10:25:49 -08:00
parent 87c4963533
commit 534bdaf30b
3 changed files with 52 additions and 7 deletions
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12
src/ip.cpp
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@@ -426,13 +426,11 @@ void IP::write_serialization(uint8_t *buffer, uint32_t total_sz, const PDU* pare
}
memset(buffer + sizeof(_ip) + _options_size, 0, _padded_options_size - _options_size);
if(parent) {
uint32_t check = Utils::do_checksum(buffer, buffer + sizeof(_ip) + _padded_options_size);
while (check >> 16)
check = (check & 0xffff) + (check >> 16);
checksum(~check);
((iphdr*)buffer)->check = _ip.check;
}
uint32_t check = Utils::do_checksum(buffer, buffer + sizeof(_ip) + _padded_options_size);
while (check >> 16)
check = (check & 0xffff) + (check >> 16);
checksum(~check);
((iphdr*)buffer)->check = _ip.check;
}
bool IP::matches_response(const uint8_t *ptr, uint32_t total_sz) const {