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Move checksum utils into their own file

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This commit is contained in:
Matias Fontanini
2017-04-30 11:59:02 -07:00
parent 6e1d1d3dc4
commit 589adba798
13 changed files with 252 additions and 146 deletions
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58
include/tins/utils.h
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@@ -39,6 +39,7 @@
#include "ipv6_address.h"
#include "pdu.h"
#include "detail/type_traits.h"
#include "utils/checksum_utils.h"
// Fix for Windows interface define on combaseapi.h
#undef interface
@@ -215,13 +216,6 @@ TINS_API std::vector<RouteEntry> route_entries();
*/
TINS_API std::vector<Route6Entry> route6_entries();
/** \brief Returns the 32 bit crc of the given buffer.
*
* \param data The input buffer.
* \param data_size The size of the input buffer.
*/
TINS_API uint32_t crc32(const uint8_t* data, uint32_t data_size);
/**
* \brief Converts a channel number to its mhz representation.
* \param channel The channel number.
@@ -243,56 +237,6 @@ TINS_API uint16_t mhz_to_channel(uint16_t mhz);
*/
TINS_API std::string to_string(PDU::PDUType pduType);
/**
* \brief Does the 16 bits sum of all 2 bytes elements between start and end.
*
* This is the checksum used by IP, UDP and TCP. If there's and odd number of
* bytes, the last one is padded and added to the checksum.
* \param start The pointer to the start of the buffer.
* \param end The pointer to the end of the buffer(excluding the last element).
* \return Returns the checksum between start and end (non inclusive)
* in network endian
*/
TINS_API uint32_t do_checksum(const uint8_t* start, const uint8_t* end);
/**
* \brief Computes the 16 bit sum of the input buffer.
*
* If there's and odd number of bytes in the buffer, the last one is padded and
* added to the checksum.
* \param start The pointer to the start of the buffer.
* \param end The pointer to the end of the buffer(excluding the last element).
* \return Returns the checksum between start and end (non inclusive)
* in network endian
*/
TINS_API uint16_t sum_range(const uint8_t* start, const uint8_t* end);
/** \brief Performs the pseudo header checksum used in TCP and UDP PDUs.
*
* \param source_ip The source ip address.
* \param dest_ip The destination ip address.
* \param len The length to be included in the pseudo header.
* \param flag The flag to use in the protocol field of the pseudo header.
* \return The pseudo header checksum.
*/
TINS_API uint32_t pseudoheader_checksum(IPv4Address source_ip,
IPv4Address dest_ip,
uint16_t len,
uint16_t flag);
/** \brief Performs the pseudo header checksum used in TCP and UDP PDUs.
*
* \param source_ip The source ip address.
* \param dest_ip The destination ip address.
* \param len The length to be included in the pseudo header.
* \param flag The flag to use in the protocol field of the pseudo header.
* \return The pseudo header checksum.
*/
TINS_API uint32_t pseudoheader_checksum(IPv6Address source_ip,
IPv6Address dest_ip,
uint16_t len,
uint16_t flag);
template <typename T>
struct is_pdu {
template <typename U>