Module util

Utility Module for Network Operations

Purpose

This file serves as the entry point for the util module. It organizes and publicly exports various networking utilities required by the xdp-socket library and potentially useful for applications using it.

How it works

It declares the sub-modules (netlink, packet, router, xdp) using pub mod and mod statements. It then uses pub use to re-export the most important functions and structs from these sub-modules, creating a consolidated and easy-to-use public API for the util module.

Main components

• Module declarations: Brings the utility sub-modules into the crate’s scope.
• Public re-exports (pub use): Exposes functionalities like route lookups, packet header creation, and netlink queries to the rest of the crate.

Re-exports

pub use netlink::find_default_gateway;

pub use netlink::get_ipv4_address;

pub use netlink::get_links;

pub use netlink::netlink;

pub use netlink::get_ipv4_routes;

pub use netlink::get_neighbors;

pub use packet::write_udp_header_for;

pub use router::Ipv4Route;

pub use router::Neighbor;

pub use router::NextHop;

pub use router::Router;

pub use xdp_prog::OwnedXdpProg;

pub use xdp_prog::xdp_features;

pub use xdp_prog::xdp_attach_program;

pub use mac_by_ifindex::mac_by_ifindex;

Modules

mac_by_ifindex

netlink

Low-Level Netlink Interface

packet

UDP Packet Header Construction

router

IPv4 Routing and Neighbor Table Cache

xdp_prog

XDP Program Loading and Feature Querying