commit f3ee8089277b768483417556df629248db33076d
author Eric Newberry <enewberry@cs.ucla.edu> Tue Jan 28 13:44:18 2020 -0800
committer Eric Newberry <enewberry@cs.ucla.edu> Sun Feb 09 14:34:00 2020 -0800
tree 1eefbd3a90b664a75c970cad4659b2938f411efa
parent 97f26a2618df621a8e97a4fef15984d8f4d7ef6a

face: support runtime MTU changes on Ethernet faces

refs #3257

Change-Id: I160fe444b889b8f7be19022a2bd52bbc9f7a21aa

tests/daemon/face/multicast-ethernet-transport.t.cpp

diff --git a/tests/daemon/face/multicast-ethernet-transport.t.cpp b/tests/daemon/face/multicast-ethernet-transport.t.cpp
index 8dde05f..4e0df3c 100644
--- a/tests/daemon/face/multicast-ethernet-transport.t.cpp
+++ b/tests/daemon/face/multicast-ethernet-transport.t.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2014-2019,  Regents of the University of California,
+ * Copyright (c) 2014-2020,  Regents of the University of California,
  *                           Arizona Board of Regents,
  *                           Colorado State University,
  *                           University Pierre & Marie Curie, Sorbonne University,
@@ -89,6 +89,25 @@
   BOOST_CHECK_EQUAL(transport->getState(), TransportState::UP);
 }
 
+BOOST_AUTO_TEST_CASE(NetifMtuChange)
+{
+  SKIP_IF_ETHERNET_NETIF_COUNT_LT(1);
+  initializeMulticast();
+  BOOST_CHECK_EQUAL(transport->getMtu(), netif->getMtu());
+
+  // netif changes MTU from initial value to 1024
+  netif->setMtu(1024);
+  BOOST_CHECK_EQUAL(transport->getMtu(), 1024);
+
+  // netif changes MTU from 1024 to 4000
+  netif->setMtu(4000);
+  BOOST_CHECK_EQUAL(transport->getMtu(), 4000);
+
+  // netif changes MTU from 4000 to 0
+  netif->setMtu(0);
+  BOOST_CHECK_EQUAL(transport->getMtu(), 0);
+}
+
 BOOST_AUTO_TEST_CASE(Close)
 {
   SKIP_IF_ETHERNET_NETIF_COUNT_LT(1);