| // Copyright 2019 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| //! Utilities for implementing PPP control protocols. |
| //! |
| //! Provides a generic implementation of an LCP-like protocol state machine, and implementations of |
| //! LCP, IPCP and IPV6CP using this generic implementation. |
| |
| #![deny(missing_docs)] |
| |
| pub mod ppp; |
| |
| pub mod ipv4; |
| pub mod ipv6; |
| pub mod link; |
| |
| mod test; |
| |
| use packet::{Buf, Either, EmptyBuf}; |
| |
| /// Flatten an `Either<EmptyBuf, Buf<Vec<u8>>>` into a `Buf<Vec<u8>>`. |
| /// |
| /// `flatten_either` either unwraps the `B` variant or, if the `A` variant is |
| /// present, returns `Buf::new(Vec::new())`. |
| fn flatten_either(buf: Either<EmptyBuf, Buf<Vec<u8>>>) -> Buf<Vec<u8>> { |
| match buf { |
| Either::A(_) => Buf::new(Vec::new(), ..), |
| Either::B(buf) => buf, |
| } |
| } |
