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Code Issues Releases Wiki Activity

Removed IP, UDP and IP checksum setters. Added some checksum tests.

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This commit is contained in:
Matias Fontanini
2013-04-22 20:06:35 -03:00
parent 66ff604580
commit 9be4f0ca37
8 changed files with 69 additions and 48 deletions
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12
src/ip.cpp
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@@ -173,7 +173,7 @@ void IP::protocol(uint8_t new_protocol) {
_ip.protocol = new_protocol;
}
void IP::check(uint16_t new_check) {
void IP::checksum(uint16_t new_check) {
_ip.check = Endian::host_to_be(new_check);
}
@@ -385,7 +385,7 @@ void IP::write_serialization(uint8_t *buffer, uint32_t total_sz, const PDU* pare
#ifdef TINS_DEBUG
assert(total_sz >= my_sz);
#endif
check(0);
checksum(0);
if(inner_pdu()) {
uint32_t new_flag;
switch(inner_pdu()->pdu_type()) {
@@ -425,10 +425,10 @@ 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 checksum = Utils::do_checksum(buffer, buffer + sizeof(_ip) + _padded_options_size);
while (checksum >> 16)
checksum = (checksum & 0xffff) + (checksum >> 16);
check(~checksum);
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;
}
}