From 975f2f23c0256f192838a5a5cd995faa9ad88f34 Mon Sep 17 00:00:00 2001
From: Dario Nieuwenhuis <dirbaio@dirbaio.net>
Date: Wed, 30 Aug 2023 01:04:43 +0200
Subject: [PATCH] net-ppp: return error when PPP link gets terminated by the
 peer.

---
 embassy-net-ppp/Cargo.toml | 2 +-
 embassy-net-ppp/src/lib.rs | 5 +++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/embassy-net-ppp/Cargo.toml b/embassy-net-ppp/Cargo.toml
index b2874c68..191577b5 100644
--- a/embassy-net-ppp/Cargo.toml
+++ b/embassy-net-ppp/Cargo.toml
@@ -18,7 +18,7 @@ log = { version = "0.4.14", optional = true }
 embedded-io-async = { version = "0.5.0" }
 embassy-net-driver-channel = { version = "0.1.0", path = "../embassy-net-driver-channel" }
 embassy-futures = { version = "0.1.0", path = "../embassy-futures" }
-ppproto = { version = "0.1.1"}
+ppproto = { version = "0.1.2"}
 embassy-sync = { version = "0.2.0", path = "../embassy-sync" }
 
 [package.metadata.embassy_docs]
diff --git a/embassy-net-ppp/src/lib.rs b/embassy-net-ppp/src/lib.rs
index ca87fbae..66496ee0 100644
--- a/embassy-net-ppp/src/lib.rs
+++ b/embassy-net-ppp/src/lib.rs
@@ -53,6 +53,8 @@ pub enum RunError<E> {
     WriteZero,
     /// Writing to the serial got EOF.
     Eof,
+    /// PPP protocol was terminated by the peer
+    Terminated,
 }
 
 impl<E> From<WriteAllError<E>> for RunError<E> {
@@ -128,6 +130,9 @@ impl<'d> Runner<'d> {
 
                     let status = ppp.status();
                     match status.phase {
+                        ppproto::Phase::Dead => {
+                            return Err(RunError::Terminated);
+                        }
                         ppproto::Phase::Open => {
                             if !was_up {
                                 on_ipv4_up(status.ipv4.unwrap());