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|
use as_slice::{AsMutSlice, AsSlice};
use core::ops::{Deref, DerefMut, Range};
use atomic_pool::{pool, Box};
pub const MTU: usize = 1516;
#[cfg(feature = "pool-4")]
pub const PACKET_POOL_SIZE: usize = 4;
#[cfg(feature = "pool-8")]
pub const PACKET_POOL_SIZE: usize = 8;
#[cfg(feature = "pool-16")]
pub const PACKET_POOL_SIZE: usize = 16;
#[cfg(feature = "pool-32")]
pub const PACKET_POOL_SIZE: usize = 32;
pool!(pub PacketPool: [Packet; PACKET_POOL_SIZE]);
pub type PacketBox = Box<PacketPool>;
#[repr(align(4))]
pub struct Packet(pub [u8; MTU]);
impl Packet {
pub const fn new() -> Self {
Self([0; MTU])
}
}
pub trait PacketBoxExt {
fn slice(self, range: Range<usize>) -> PacketBuf;
}
impl PacketBoxExt for PacketBox {
fn slice(self, range: Range<usize>) -> PacketBuf {
PacketBuf {
packet: self,
range,
}
}
}
impl AsSlice for Packet {
type Element = u8;
fn as_slice(&self) -> &[Self::Element] {
&self.deref()[..]
}
}
impl AsMutSlice for Packet {
fn as_mut_slice(&mut self) -> &mut [Self::Element] {
&mut self.deref_mut()[..]
}
}
impl Deref for Packet {
type Target = [u8; MTU];
fn deref(&self) -> &[u8; MTU] {
&self.0
}
}
impl DerefMut for Packet {
fn deref_mut(&mut self) -> &mut [u8; MTU] {
&mut self.0
}
}
pub struct PacketBuf {
packet: PacketBox,
range: Range<usize>,
}
impl AsSlice for PacketBuf {
type Element = u8;
fn as_slice(&self) -> &[Self::Element] {
&self.packet[self.range.clone()]
}
}
impl AsMutSlice for PacketBuf {
fn as_mut_slice(&mut self) -> &mut [Self::Element] {
&mut self.packet[self.range.clone()]
}
}
impl Deref for PacketBuf {
type Target = [u8];
fn deref(&self) -> &[u8] {
&self.packet[self.range.clone()]
}
}
impl DerefMut for PacketBuf {
fn deref_mut(&mut self) -> &mut [u8] {
&mut self.packet[self.range.clone()]
}
}
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