Function etherparse::checksum::u32_16bit_word::ones_complement_with_no_zero

source ยท 
pub fn ones_complement_with_no_zero(sum: u32) -> u16
Expand description

Converts summed up words from an u32 to an u16 with 0 being replaced by 0xffff (useful for TCP and UDP headers).

This kind of checksum is used in TCP and udp headers.