Add routing_test:static_ipv6_loopback_route_for_each_fib.

It tests that all FIBs get a static IPv6 loopback route.

Submitted by:	asomers
MFC after:	1 week
Sponsored by:	Spectra Logic
MFSpectraBSD:	1048456 on 2014/03/13
		1114523 on 2015/01/23

etc/tests/Makefile

@@ -7,4 +7,6 @@ TESTSDIR=	${TESTSBASE}/etc
 .PATH:		${.CURDIR:H:H}/tests
 KYUAFILE=	yes
 
+TESTS_SUBDIRS+=	rc.d
+
 .include <bsd.test.mk>

etc/tests/rc.d/Makefile

@@ -0,0 +1,7 @@
+# $FreeBSD$
+
+TESTSDIR=	${TESTSBASE}/etc/rc.d
+
+ATF_TESTS_SH+=	routing_test
+
+.include <bsd.test.mk>

etc/tests/rc.d/routing_test.sh

@@ -0,0 +1,138 @@
+#
+#  Copyright (c) 2014 Spectra Logic Corporation
+#  All rights reserved.
+# 
+#  Redistribution and use in source and binary forms, with or without
+#  modification, are permitted provided that the following conditions
+#  are met:
+#  1. Redistributions of source code must retain the above copyright
+#     notice, this list of conditions, and the following disclaimer,
+#     without modification.
+#  2. Redistributions in binary form must reproduce at minimum a disclaimer
+#     substantially similar to the "NO WARRANTY" disclaimer below
+#     ("Disclaimer") and any redistribution must be conditioned upon
+#     including a substantially similar Disclaimer requirement for further
+#     binary redistribution.
+# 
+#  NO WARRANTY
+#  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+#  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+#  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+#  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+#  HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+#  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+#  OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+#  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+#  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+#  IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+#  POSSIBILITY OF SUCH DAMAGES.
+# 
+#  Authors: Alan Somers         (Spectra Logic Corporation)
+#
+# $FreeBSD$
+
+atf_test_case static_ipv6_loopback_route_for_each_fib cleanup
+static_ipv6_loopback_route_for_each_fib_head()
+{
+	atf_set "descr" "Every FIB should have a static IPv6 loopback route"
+	atf_set "require.user" "root"
+	atf_set "require.config" "fibs"
+	atf_set "require.progs" "sysrc"
+}
+static_ipv6_loopback_route_for_each_fib_body()
+{
+	# Configure the TAP interface to use an RFC5737 nonrouteable address
+	# and a non-default fib
+	ADDR="192.0.2.2"
+	SUBNET="192.0.2.0"
+	MASK="24"
+
+	# Check system configuration
+	if [ 0 != `sysctl -n net.add_addr_allfibs` ]; then
+		atf_skip "This test requires net.add_addr_allfibs=0"
+	fi
+
+	get_fibs 1
+	get_tap
+	
+	# Configure a TAP interface in /etc/rc.conf.  Register the sysrc
+	# variable for cleanup.
+	echo "ifconfig_${TAP}" >> "sysrc_vars_to_cleanup"
+	sysrc ifconfig_${TAP}="${ADDR}/${MASK} fib ${FIB0}"
+
+	# Start the interface
+	service netif start ${TAP}
+	# Check for an IPv6 loopback route
+	setfib ${FIB0} netstat -rn -f inet6 | grep -q "^::1.*lo0$"
+	if [ 0 -eq $? ]; then
+		atf_pass
+	else
+		setfib ${FIB0} netstat -rn -f inet6
+		atf_fail "Did not find an IPv6 loopback route"
+	fi
+}
+static_ipv6_loopback_route_for_each_fib_cleanup()
+{
+	cleanup_sysrc
+	cleanup_tap
+}
+
+atf_init_test_cases()
+{
+	atf_add_test_case static_ipv6_loopback_route_for_each_fib
+}
+
+# Looks up one or more fibs from the configuration data and validates them.
+# Returns the results in the env varilables FIB0, FIB1, etc.
+# parameter numfibs	The number of fibs to lookup
+get_fibs()
+{
+	NUMFIBS=$1
+	net_fibs=`sysctl -n net.fibs`
+	i=0
+	while [ $i -lt "$NUMFIBS" ]; do
+		fib=`atf_config_get "fibs" | \
+			awk -v i=$(( i + 1 )) '{print $i}'`
+		echo "fib is ${fib}"
+		eval FIB${i}=${fib}
+		if [ "$fib" -ge "$net_fibs" ]; then
+			msg="The ${i}th configured fib is ${fub}, which is "
+			msg="$msg not less than net.fibs (${net_fibs})"
+			atf_skip "$msg"
+		fi
+		i=$(( $i + 1 ))
+	done
+}
+
+
+# Creates a new tap(4) interface, registers it for cleanup, and returns the
+# name via the environment variable TAP
+get_tap()
+{
+	local TAPN=0
+	while ! ifconfig tap${TAPN} create > /dev/null 2>&1; do
+		if [ "$TAPN" -ge 8 ]; then
+			atf_skip "Could not create a tap(4) interface"
+		else
+			TAPN=$(($TAPN + 1))
+		fi
+	done
+	local TAPD=tap${TAPN}
+	# Record the TAP device so we can clean it up later
+	echo ${TAPD} >> "tap_devices_to_cleanup"
+	TAP=${TAPD}
+}
+
+cleanup_sysrc()
+{
+	for var in `cat "sysrc_vars_to_cleanup"`; do
+		sysrc -x $var
+	done
+}
+
+cleanup_tap()
+{
+	for TAPD in `cat "tap_devices_to_cleanup"`; do
+		ifconfig ${TAPD} destroy
+	done
+}