//! Shared protocol primitives for the LAN party L2 tunnel.
//!
//! This crate intentionally contains no socket, TAP, QUIC, or OS-specific
//! behavior. It is the small contract that the Windows client, Linux gateway,
//! and relay must all agree on.

mod ethernet;
mod mac;
mod mtu;
mod overlay;

pub use ethernet::{
    ETHERNET_HEADER_LEN, EthernetFrame, MAX_STANDARD_ETHERNET_FRAME_LEN,
    MAX_STANDARD_ETHERNET_PAYLOAD_LEN, MIN_ETHERNET_FRAME_LEN,
};
pub use mac::{MacAddr, MacParseError};
pub use mtu::{
    DEFAULT_DATAGRAM_SAFETY_MARGIN, DEFAULT_TAP_MTU, MIN_USEFUL_TAP_MTU, MtuError,
    max_tap_mtu_for_datagram, recommended_tap_mtu,
};
pub use overlay::{
    FrameType, OVERLAY_HEADER_LEN, OVERLAY_MAGIC, OVERLAY_VERSION, OverlayHeader, OverlayPacket,
    ProtoError, decode_datagram, encode_datagram, validate_datagram_budget,
};