Add basic routing LPM tests.

Differential Revision:	https://reviews.freebsd.org/D24684

tests/sys/netinet/Makefile

@@ -9,7 +9,7 @@ ATF_TESTS_C=	ip_reass_test \
 		so_reuseport_lb_test \
 		socket_afinet
 
-ATF_TESTS_SH=	carp fibs_test redirect divert forward output
+ATF_TESTS_SH=	carp fibs_test redirect divert forward output lpm
 
 PROGS=	udp_dontroute tcp_user_cookie
 

tests/sys/netinet/lpm.sh

@@ -0,0 +1,179 @@
+#!/usr/bin/env atf-sh
+#-
+# SPDX-License-Identifier: BSD-2-Clause
+#
+# Copyright (c) 2020 Alexander V. Chernikov
+#
+# 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.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, 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 DAMAGE.
+#
+# $FreeBSD$
+#
+
+. $(atf_get_srcdir)/../common/vnet.subr
+
+setup_networking()
+{
+	jname="$1"
+	lo_dst="$2"
+	epair0="$3"
+	epair1="$4"
+
+	vnet_mkjail ${jname}a ${epair0}a ${epair1}a
+	# Setup transit IPv4 networks
+	jexec ${jname}a ifconfig ${epair0}a up
+	jexec ${jname}a ifconfig ${epair0}a inet 203.0.113.1/30
+	jexec ${jname}a ifconfig ${epair1}a up
+	jexec ${jname}a ifconfig ${epair1}a inet 203.0.113.5/30
+
+	vnet_mkjail ${jname}b ${epair0}b ${epair1}b ${lo_dst}
+	jexec ${jname}b ifconfig ${epair0}b up
+	jexec ${jname}b ifconfig ${epair0}b inet 203.0.113.2/30
+	jexec ${jname}b ifconfig ${epair1}b up
+	jexec ${jname}b ifconfig ${epair1}b inet 203.0.113.6/30
+	jexec ${jname}b ifconfig ${lo_dst} up
+
+}
+
+atf_test_case "lpm_test1_success" "cleanup"
+lpm_test1_success_head()
+{
+
+	atf_set descr 'Test IPv4 LPM for /30 and /31'
+	atf_set require.user root
+}
+
+lpm_test1_success_body()
+{
+
+	vnet_init
+
+	jname="v4t-lpm_test1_success"
+
+	lo_dst=$(vnet_mkloopback)
+	epair0=$(vnet_mkepair)
+	epair1=$(vnet_mkepair)
+
+	setup_networking ${jname} ${lo_dst} ${epair0} ${epair1}
+
+	jexec ${jname}b ifconfig ${lo_dst} inet 198.51.100.0/32
+	jexec ${jname}b ifconfig ${lo_dst} alias 198.51.100.2/32
+
+	# Add routes
+	# A -> towards B via epair0a 
+	jexec ${jname}a route add -4 -net 198.51.100.0/30 203.0.113.2
+	# A -> towards B via epair1a
+	jexec ${jname}a route add -4 -net 198.51.100.0/31 203.0.113.6
+
+	count=20
+	valid_message="${count} packets transmitted, ${count} packets received"
+
+	# Check that 198.51.100.0 goes via epair1
+	atf_check -o match:"${valid_message}" jexec ${jname}a ping -f -nc${count} 198.51.100.0
+	pkt_0=`jexec ${jname}a netstat -Wf link -I ${epair0}a | head | awk '$1!~/^Name/{print$8}'`
+	pkt_1=`jexec ${jname}a netstat -Wf link -I ${epair1}a | head | awk '$1!~/^Name/{print$8}'`
+	if [ ${pkt_1} -le ${count} ]; then
+		echo "LPM failure: 1: ${pkt_0} 2: ${pkt_1} (should be ${count})"
+		exit 1
+	fi
+
+	# Check that 198.51.100.2 goes via epair0
+	atf_check -o match:"${valid_message}" jexec ${jname}a ping -f -nc${count} 198.51.100.2
+	pkt_0=`jexec ${jname}a netstat -Wf link -I ${epair0}a | head | awk '$1!~/^Name/{print$8}'`
+	pkt_1=`jexec ${jname}a netstat -Wf link -I ${epair1}a | head | awk '$1!~/^Name/{print$8}'`
+	if [ ${pkt_0} -le ${count} ]; then
+		echo "LPM failure: 1: ${pkt_0} (should be ${count})  2: ${pkt_1}"
+		exit 1
+	fi
+
+	echo "RAW BALANCING: 1: ${pkt_0} 2: ${pkt_1}"
+}
+
+lpm_test1_success_cleanup()
+{
+	vnet_cleanup
+}
+
+atf_test_case "lpm_test2_success" "cleanup"
+lpm_test2_success_head()
+{
+
+	atf_set descr 'Test IPv4 LPM for the host routes'
+	atf_set require.user root
+}
+
+lpm_test2_success_body()
+{
+
+	vnet_init
+
+	jname="v4t-lpm_test2_success"
+
+	lo_dst=$(vnet_mkloopback)
+	epair0=$(vnet_mkepair)
+	epair1=$(vnet_mkepair)
+
+	setup_networking ${jname} ${lo_dst} ${epair0} ${epair1}
+
+	jexec ${jname}b ifconfig ${lo_dst} inet 198.51.100.0/32
+	jexec ${jname}b ifconfig ${lo_dst} alias 198.51.100.1/32
+
+	# Add routes
+	# A -> towards B via epair0a 
+	jexec ${jname}a route add -4 -host 198.51.100.0 203.0.113.2
+	# A -> towards B via epair1a
+	jexec ${jname}a route add -4 -host 198.51.100.1 203.0.113.6
+
+	count=20
+	valid_message="${count} packets transmitted, ${count} packets received"
+
+	# Check that 198.51.100.0 goes via epair0
+	atf_check -o match:"${valid_message}" jexec ${jname}a ping -f -nc${count} 198.51.100.0
+	pkt_0=`jexec ${jname}a netstat -Wf link -I ${epair0}a | head | awk '$1!~/^Name/{print$8}'`
+	pkt_1=`jexec ${jname}a netstat -Wf link -I ${epair1}a | head | awk '$1!~/^Name/{print$8}'`
+	if [ ${pkt_0} -le ${count} ]; then
+		echo "LPM failure: 1: ${pkt_0} (should be ${count})  2: ${pkt_1}"
+		exit 1
+	fi
+
+	# Check that 198.51.100.1 goes via epair1
+	atf_check -o match:"${valid_message}" jexec ${jname}a ping -f -nc${count} 198.51.100.1
+	pkt_0=`jexec ${jname}a netstat -Wf link -I ${epair0}a | head | awk '$1!~/^Name/{print$8}'`
+	pkt_1=`jexec ${jname}a netstat -Wf link -I ${epair1}a | head | awk '$1!~/^Name/{print$8}'`
+	if [ ${pkt_1} -le ${count} ]; then
+		echo "LPM failure: 1: ${pkt_0} 2: ${pkt_1} (should be ${count})"
+		exit 1
+	fi
+
+	echo "RAW BALANCING: 1: ${pkt_0} 2: ${pkt_1}"
+}
+
+lpm_test2_success_cleanup()
+{
+	vnet_cleanup
+}
+
+atf_init_test_cases()
+{
+	atf_add_test_case "lpm_test1_success"
+	atf_add_test_case "lpm_test2_success"
+}
+

tests/sys/netinet6/Makefile

@@ -12,7 +12,8 @@ ATF_TESTS_SH=			\
 				redirect \
 				divert \
 				forward6 \
-				output6
+				output6 \
+				lpm6
 
 ${PACKAGE}FILES+=		exthdr.py
 ${PACKAGE}FILES+=		mld.py

tests/sys/netinet6/lpm6.sh

@@ -0,0 +1,199 @@
+#!/usr/bin/env atf-sh
+#-
+# SPDX-License-Identifier: BSD-2-Clause
+#
+# Copyright (c) 2020 Alexander V. Chernikov
+#
+# 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.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, 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 DAMAGE.
+#
+# $FreeBSD$
+#
+
+. $(atf_get_srcdir)/../common/vnet.subr
+
+setup_networking()
+{
+	jname="$1"
+	lo_dst="$2"
+	epair0="$3"
+	epair1="$4"
+
+	vnet_mkjail ${jname}a ${epair0}a ${epair1}a ${lo_src}
+	# enable link-local IPv6
+	jexec ${jname}a ndp -i ${epair0}a -- -disabled
+	jexec ${jname}a ifconfig ${epair0}a up
+	jexec ${jname}a ndp -i ${epair1}a -- -disabled
+	jexec ${jname}a ifconfig ${epair1}a up
+	jexec ${jname}a ifconfig ${lo_src} up
+
+	vnet_mkjail ${jname}b ${epair0}b ${epair1}b ${lo_dst}
+	jexec ${jname}b ndp -i ${epair0}b -- -disabled
+	jexec ${jname}b ifconfig ${epair0}b up
+	jexec ${jname}b ndp -i ${epair1}b -- -disabled
+	jexec ${jname}b ifconfig ${epair1}b up
+	jexec ${jname}b ifconfig ${lo_dst} up
+
+	# wait for DAD to complete
+	while [ `jexec ${jname}b ifconfig | grep inet6 | grep -c tentative` != "0" ]; do
+		sleep 0.1
+	done
+	while [ `jexec ${jname}a ifconfig | grep inet6 | grep -c tentative` != "0" ]; do
+		sleep 0.1
+	done
+}
+
+
+atf_test_case "lpm6_test1_success" "cleanup"
+lpm6_test1_success_head()
+{
+
+	atf_set descr 'Test IPv6 LPM for the host routes'
+	atf_set require.user root
+}
+
+lpm6_test1_success_body()
+{
+
+	vnet_init
+
+	net_dst="2001:db8:"
+
+	jname="v6t-lpm6_test1_success"
+
+	epair0=$(vnet_mkepair)
+	epair1=$(vnet_mkepair)
+	lo_dst=$(vnet_mkloopback)
+
+	setup_networking ${jname} ${lo_dst} ${epair0} ${epair1}
+
+	jexec ${jname}b ifconfig ${lo_dst} inet6 ${net_dst}:2:0/128
+	jexec ${jname}b ifconfig ${lo_dst} inet6 ${net_dst}:2:1/128
+
+	# Add routes
+	# A -> towards B via epair0a LL
+	ll=`jexec ${jname}b ifconfig ${epair0}b inet6 | awk '$2~/^fe80:/{print$2}' | awk -F% '{print$1}'`
+	jexec ${jname}a route add -6 -host ${net_dst}:2:0  ${ll}%${epair0}a
+	# A -> towards B via epair1a LL
+	ll=`jexec ${jname}b ifconfig ${epair1}b inet6 | awk '$2~/^fe80:/{print$2}' | awk -F% '{print$1}'`
+	jexec ${jname}a route add -6 -host ${net_dst}:2:1 ${ll}%${epair1}a
+
+	count=20
+	valid_message="${count} packets transmitted, ${count} packets received"
+
+	# Check that ${net_dst}:2:0 goes via epair0
+	atf_check -o match:"${valid_message}" jexec ${jname}a ping6 -f -nc${count} ${net_dst}:2:0
+	pkt_0=`jexec ${jname}a netstat -Wf link -I ${epair0}a | head | awk '$1!~/^Name/{print$8}'`
+	pkt_1=`jexec ${jname}a netstat -Wf link -I ${epair1}a | head | awk '$1!~/^Name/{print$8}'`
+	if [ ${pkt_0} -le ${count} ]; then
+		echo "LPM failure: 1: ${pkt_0} (should be ${count})  2: ${pkt_1}"
+		exit 1
+	fi
+
+	# Check that ${net_dst}:2:1 goes via epair1
+	atf_check -o match:"${valid_message}" jexec ${jname}a ping6 -f -nc${count} ${net_dst}:2:1
+	pkt_0=`jexec ${jname}a netstat -Wf link -I ${epair0}a | head | awk '$1!~/^Name/{print$8}'`
+	pkt_1=`jexec ${jname}a netstat -Wf link -I ${epair1}a | head | awk '$1!~/^Name/{print$8}'`
+	if [ ${pkt_1} -le ${count} ]; then
+		echo "LPM failure: 1: ${pkt_0} 2: ${pkt_1} (should be ${count})"
+		exit 1
+	fi
+
+	echo "RAW BALANCING: 1: ${pkt_0} 2: ${pkt_1}"
+}
+
+lpm6_test1_success_cleanup()
+{
+	vnet_cleanup
+}
+
+atf_test_case "lpm6_test2_success" "cleanup"
+lpm6_test2_success_head()
+{
+
+	atf_set descr 'Test IPv6 LPM for /126 and /127'
+	atf_set require.user root
+}
+
+lpm6_test2_success_body()
+{
+
+	vnet_init
+
+	net_dst="2001:db8:"
+
+	jname="v6t-lpm6_test2_success"
+
+	epair0=$(vnet_mkepair)
+	epair1=$(vnet_mkepair)
+	lo_dst=$(vnet_mkloopback)
+
+	setup_networking ${jname} ${lo_dst} ${epair0} ${epair1}
+
+	jexec ${jname}b ifconfig ${lo_dst} inet6 ${net_dst}:2:0/128
+	jexec ${jname}b ifconfig ${lo_dst} inet6 ${net_dst}:2:2/128
+
+	# Add routes
+	# A -> towards B via epair0a LL
+	ll=`jexec ${jname}b ifconfig ${epair0}b inet6 | awk '$2~/^fe80:/{print$2}' | awk -F% '{print$1}'`
+	jexec ${jname}a route add -6 -net ${net_dst}:2:0/126  ${ll}%${epair0}a
+	# A -> towards B via epair1a LL
+	ll=`jexec ${jname}b ifconfig ${epair1}b inet6 | awk '$2~/^fe80:/{print$2}' | awk -F% '{print$1}'`
+	jexec ${jname}a route add -6 -net ${net_dst}:2:0/127 ${ll}%${epair1}a
+
+	count=20
+	valid_message="${count} packets transmitted, ${count} packets received"
+
+	# Check that ${net_dst}:2:0 goes via epair1
+	atf_check -o match:"${valid_message}" jexec ${jname}a ping6 -f -nc${count} ${net_dst}:2:0
+	pkt_0=`jexec ${jname}a netstat -Wf link -I ${epair0}a | head | awk '$1!~/^Name/{print$8}'`
+	pkt_1=`jexec ${jname}a netstat -Wf link -I ${epair1}a | head | awk '$1!~/^Name/{print$8}'`
+	if [ ${pkt_1} -le ${count} ]; then
+		echo "LPM failure: 1: ${pkt_0} 2: ${pkt_1} (should be ${count})"
+		exit 1
+	fi
+
+	# Check that ${net_dst}:2:2 goes via epair0
+	atf_check -o match:"${valid_message}" jexec ${jname}a ping6 -f -nc${count} ${net_dst}:2:2
+	pkt_0=`jexec ${jname}a netstat -Wf link -I ${epair0}a | head | awk '$1!~/^Name/{print$8}'`
+	pkt_1=`jexec ${jname}a netstat -Wf link -I ${epair1}a | head | awk '$1!~/^Name/{print$8}'`
+	if [ ${pkt_0} -le ${count} ]; then
+		echo "LPM failure: 1: ${pkt_0} (should be ${count})  2: ${pkt_1}"
+		exit 1
+	fi
+
+	echo "RAW BALANCING: 1: ${pkt_0} 2: ${pkt_1}"
+}
+
+lpm6_test2_success_cleanup()
+{
+	vnet_cleanup
+}
+
+atf_init_test_cases()
+{
+	atf_add_test_case "lpm6_test1_success"
+	atf_add_test_case "lpm6_test2_success"
+}
+
+# end
+
+