prns-core 0.3.4

Pure Reticulum engine and wire contract for Personal Reticulum
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use super::ifac::IFAC_MAX_SIZE;
use crate::interfaces::InterfaceDescriptor;

pub const MAX_WIRE_FRAME_LEN: usize = crate::routing::links::MAX_LINK_MTU + IFAC_MAX_SIZE;

pub const EMBEDDED_MAX_LINK_MTU: usize = 1_472;
pub const EMBEDDED_MAX_WIRE_FRAME_LEN: usize = EMBEDDED_MAX_LINK_MTU + IFAC_MAX_SIZE;

pub const BROADCAST_WIRE_FRAME_LEN: usize = crate::wire::BROADCAST_MTU + IFAC_MAX_SIZE;

pub fn frame_cap_for(descriptor: &InterfaceDescriptor) -> usize {
    descriptor
        .hardware_mtu
        .unwrap_or(crate::wire::BROADCAST_MTU)
        + IFAC_MAX_SIZE
}