Module etherparse::checksum::u64_16bit_word

Helper functions for calculating a 16 bit checksum using a u64 to sum up all values.

Functions

add_2bytes

Add a 2 byte word.

add_4bytes

Add a 4 byte word.

add_8bytes

Add a 8 byte word.

add_slice

Add the given slice to the checksum. In case the slice has a length that is not multiple of 2 the last byte will be padded with 0.

ones_complement

Converts summed up words from an u64 to an u16 which can be used in a ipv4.

ones_complement_with_no_zero

Converts summed up words from an u64 to an u16 with 0 beeing replaced by 0xffff (usefull for TCP and UDP headers).