ethox 0.0.2

A standalone network stack for user-space networking and unikernels
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62

//! The udp layer.
//!
//! The central layer does not contain routing logic to ports but merely extracts that information.
//! A separate routing layer for upper layer services utilizes port information. This makes it
//! possible to respond dynamically at any port without settting up logic prior to a packet
//! arriving (e.g. dynamic port knocking) but also simplifies implementation by enforcing clear cut
//! separation of concerns.
use crate::wire::Payload;

mod endpoint;
mod packet;
#[cfg(test)]
mod tests;

pub use endpoint::{
    Endpoint,
    Receiver,
    Sender,
};

pub use packet::{
    Controller,
    Init,
    Packet,
    RawPacket,
};

/// A UDP receiver.
///
/// Processes incoming UDP packets of all addresses and ports. Should contain some internal
/// mechanism to distribute these.
pub trait Recv<P: Payload> {
    /// Inspect one incoming packet buffer.
    ///
    /// Contains a parsed representation of a UDP packet on top of some IP and Ethernet layers.
    /// Also a control handle to the UDP endpoint to answer directly.
    fn receive(&mut self, frame: Packet<P>);
}

/// A TCP sender.
///
/// Utilize raw packet buffers and a UDP endpoint to fill valid packets.
pub trait Send<P: Payload> {
    /// Fill in one available packet buffer.
    fn send(&mut self, raw: RawPacket<P>);
}

impl<P, C> Recv<P> for &'_ mut C
    where P: Payload, C: Recv<P>,
{
    fn receive(&mut self, frame: Packet<P>) {
        (**self).receive(frame)
    }
}

impl<P, C> Send<P> for &'_ mut C
    where P: Payload, C: Send<P>,
{
    fn send(&mut self, frame: RawPacket<P>) {
        (**self).send(frame)
    }
}