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