Module checksum 

IPv4 header checksum calculation.

Implements RFC 1071 Internet checksum algorithm used for IPv4 headers. The checksum is computed lazily - only when the packet is serialized.

Re-exports

pub use crate::utils::finalize_checksum;

pub use crate::utils::partial_checksum;

Functions

incremental_update_checksum

Incrementally update a checksum when a 16-bit field changes.

incremental_update_checksum_32

Incrementally update checksum when a 32-bit field changes.

ipv4_checksum

Compute the Internet checksum (RFC 1071) over a byte slice.

pseudo_header_checksum

Compute the pseudo-header checksum for TCP/UDP.

read_checksum

Read checksum from buffer at the specified offset.

transport_checksum

Compute complete transport layer checksum (TCP or UDP).

verify_ipv4_checksum

Verify that a checksum is valid.

write_checksum

Write checksum to buffer at the specified offset.

zero_checksum

Zero out checksum field in a buffer at the specified offset.