[src/trunk]: src/tests/net/ndp Improve test stability

[ozaki-r <ozaki-r%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/e4d1e5407e21
branches:  trunk
changeset: 339914:e4d1e5407e21
user:      ozaki-r <ozaki-r%NetBSD.org@localhost>
date:      Mon Aug 17 07:47:21 2015 +0000

description:
Improve test stability

A test for ndp -c was sometimes failed because between the deletion
and the check NS/NA messages were exchanged and a NDP cache was
recreated unexpectedly. To provent this situation, we do ifconfig
shmif0 down of the peer before the test, so the test won't be
interfered by the messages.

diffstat:

 tests/net/ndp/t_ndp.sh |  12 +++++++++++-
 1 files changed, 11 insertions(+), 1 deletions(-)

diffs (33 lines):

diff -r 549438fe6bd8 -r e4d1e5407e21 tests/net/ndp/t_ndp.sh
--- a/tests/net/ndp/t_ndp.sh    Mon Aug 17 07:32:51 2015 +0000
+++ b/tests/net/ndp/t_ndp.sh    Mon Aug 17 07:47:21 2015 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: t_ndp.sh,v 1.4 2015/08/10 09:32:01 ozaki-r Exp $
+#      $NetBSD: t_ndp.sh,v 1.5 2015/08/17 07:47:21 ozaki-r Exp $
 #
 # Copyright (c) 2015 The NetBSD Foundation, Inc.
 # All rights reserved.
@@ -127,6 +127,13 @@
        atf_check -s exit:0 -o match:'23h59m' rump.ndp -n $IP6DST
 }
 
+ifdown_dst_server()
+{
+       export RUMP_SERVER=$SOCKDST
+       atf_check -s exit:0 rump.ifconfig shmif0 down
+       export RUMP_SERVER=$SOCKSRC
+}
+
 command_body()
 {
        atf_check -s exit:0 ${inetserver} $SOCKSRC
@@ -170,6 +177,9 @@
        atf_check -s exit:0 -o match:'fc00::11' rump.ndp -n -a
        atf_check -s exit:0 -o match:'fc00::12' rump.ndp -n -a
 
+       # Ensure no packet upsets the src server
+       ifdown_dst_server
+
        # Flush all entries (-c)
        $DEBUG && rump.ndp -n -a
        atf_check -s exit:0 -o ignore rump.ndp -c