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e27970ae8f
If during ip_forward() we find a blackhole (or reject) route we should stop
processing and count this in the 'cantforward' counter, just like we already do
for IPv6.
Blackhole routes are set to use the loopback interface, so we don't actually
incorrectly forward traffic, but we do fail to count it as unroutable.
Test this, both for IPv4 and IPv6.
Reviewed by: melifaro
Sponsored by: Rubicon Communications, LLC ("Netgate")
Differential Revision: https://reviews.freebsd.org/D47529
535 lines
14 KiB
Bash
Executable file
535 lines
14 KiB
Bash
Executable file
#!/usr/bin/env atf-sh
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#-
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# SPDX-License-Identifier: BSD-2-Clause
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#
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# Copyright (c) 2020 Alexander V. Chernikov
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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#
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. $(atf_get_srcdir)/../common/vnet.subr
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atf_test_case "fwd_ip6_gu_icmp_iface_fast_success" "cleanup"
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fwd_ip6_gu_icmp_iface_fast_success_head() {
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atf_set descr 'Test valid IPv6 global unicast fast-forwarding to interface'
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atf_set require.user root
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atf_set require.progs scapy
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}
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fwd_ip6_gu_icmp_iface_fast_success_body() {
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ids=65529
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id=`printf "%x" ${ids}`
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if [ $$ -gt 65535 ]; then
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xl=`printf "%x" $(($$ - 65535))`
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yl="1"
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else
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xl=`printf "%x" $$`
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yl=""
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fi
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vnet_init
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ip6a="2001:db8:6666:0000:${yl}:${id}:1:${xl}"
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ip6b="2001:db8:6666:0000:${yl}:${id}:2:${xl}"
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plen=96
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src_ip="2001:db8:6666:0000:${yl}:${id}:3:${xl}"
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script_name="../common/sender.py"
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epair=$(vnet_mkepair)
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ifconfig ${epair}a up
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ifconfig ${epair}a inet6 ${ip6a}/${plen}
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jname="v6t-${id}-${yl}-${xl}"
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vnet_mkjail ${jname} ${epair}b
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jexec ${jname} ifconfig ${epair}b up
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jexec ${jname} ifconfig ${epair}b inet6 ${ip6b}/${plen}
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jail_mac=`jexec ${jname} ifconfig ${epair}b ether | awk '$1~/ether/{print$2}'`
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our_mac=`ifconfig ${epair}a ether | awk '$1~/ether/{print$2}'`
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# wait for DAD to complete
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while [ `jexec ${jname} ifconfig ${epair}b inet6 | grep -c tentative` != "0" ]; do
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sleep 0.1
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done
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while [ `ifconfig ${epair}a inet6 | grep -c tentative` != "0" ]; do
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sleep 0.1
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done
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jexec ${jname} sysctl net.inet6.ip6.forwarding=1
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# As we're doing router-on-the-stick, turn sending IP redirects off:
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jexec ${jname} sysctl net.inet6.ip6.redirect=0
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atf_check -s exit:0 $(atf_get_srcdir)/${script_name} \
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--test_name fwd_ip6_icmp \
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--smac ${our_mac} --dmac ${jail_mac} \
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--sip ${src_ip} --dip ${ip6a} \
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--iface ${epair}a
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# check counters are valid
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atf_check -o match:'1 packet forwarded' jexec ${jname} netstat -sp ip6
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}
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fwd_ip6_gu_icmp_iface_fast_success_cleanup() {
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vnet_cleanup
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}
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atf_test_case "fwd_ip6_gu_icmp_gw_gu_fast_success" "cleanup"
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fwd_ip6_gu_icmp_gw_gu_fast_success_head() {
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atf_set descr 'Test valid IPv6 global unicast fast-forwarding to GU gw'
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atf_set require.user root
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atf_set require.progs scapy
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}
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fwd_ip6_gu_icmp_gw_gu_fast_success_body() {
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ids=65528
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id=`printf "%x" ${ids}`
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if [ $$ -gt 65535 ]; then
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xl=`printf "%x" $(($$ - 65535))`
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yl="1"
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else
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xl=`printf "%x" $$`
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yl=""
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fi
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vnet_init
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ip6a="2001:db8:6666:0000:${yl}:${id}:1:${xl}"
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ip6b="2001:db8:6666:0000:${yl}:${id}:2:${xl}"
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plen=96
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src_ip="2001:db8:6666:0000:${yl}:${id}:3:${xl}"
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dst_ip="2001:db8:6666:0000:${yl}:${id}:4:${xl}"
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script_name="../common/sender.py"
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epair=$(vnet_mkepair)
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ifconfig ${epair}a up
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ifconfig ${epair}a inet6 ${ip6a}/${plen}
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jname="v6t-${id}-${yl}-${xl}"
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vnet_mkjail ${jname} ${epair}b
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jexec ${jname} ifconfig ${epair}b up
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jexec ${jname} ifconfig ${epair}b inet6 ${ip6b}/${plen}
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jail_mac=`jexec ${jname} ifconfig ${epair}b ether | awk '$1~/ether/{print$2}'`
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our_mac=`ifconfig ${epair}a ether | awk '$1~/ether/{print$2}'`
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# wait for DAD to complete
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while [ `jexec ${jname} ifconfig ${epair}b inet6 | grep -c tentative` != "0" ]; do
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sleep 0.1
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done
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while [ `ifconfig ${epair}a inet6 | grep -c tentative` != "0" ]; do
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sleep 0.1
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done
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# Add static route back to us
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jexec ${jname} route add -6 -host ${dst_ip} ${ip6a}
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jexec ${jname} sysctl net.inet6.ip6.forwarding=1
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# As we're doing router-on-the-stick, turn sending IP redirects off:
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jexec ${jname} sysctl net.inet6.ip6.redirect=0
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atf_check -s exit:0 $(atf_get_srcdir)/${script_name} \
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--test_name fwd_ip6_icmp \
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--smac ${our_mac} --dmac ${jail_mac} \
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--sip ${src_ip} --dip ${dst_ip} \
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--iface ${epair}a
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# check counters are valid
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atf_check -o match:'1 packet forwarded' jexec ${jname} netstat -sp ip6
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}
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fwd_ip6_gu_icmp_gw_gu_fast_success_cleanup() {
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vnet_cleanup
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}
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atf_test_case "fwd_ip6_gu_icmp_gw_ll_fast_success" "cleanup"
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fwd_ip6_gu_icmp_gw_ll_fast_success_head() {
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atf_set descr 'Test valid IPv6 global unicast fast-forwarding to LL gw'
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atf_set require.user root
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atf_set require.progs scapy
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}
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fwd_ip6_gu_icmp_gw_ll_fast_success_body() {
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ids=65527
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id=`printf "%x" ${ids}`
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if [ $$ -gt 65535 ]; then
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xl=`printf "%x" $(($$ - 65535))`
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yl="1"
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else
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xl=`printf "%x" $$`
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yl=""
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fi
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vnet_init
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ip6a="2001:db8:6666:0000:${yl}:${id}:1:${xl}"
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ip6b="2001:db8:6666:0000:${yl}:${id}:2:${xl}"
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plen=96
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src_ip="2001:db8:6666:0000:${yl}:${id}:3:${xl}"
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dst_ip="2001:db8:6666:0000:${yl}:${id}:4:${xl}"
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script_name="../common/sender.py"
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epair=$(vnet_mkepair)
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ifconfig ${epair}a up
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ifconfig ${epair}a inet6 ${ip6a}/${plen}
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jname="v6t-${id}-${yl}-${xl}"
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vnet_mkjail ${jname} ${epair}b
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jexec ${jname} ifconfig ${epair}b up
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jexec ${jname} ifconfig ${epair}b inet6 ${ip6b}/${plen}
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jail_mac=`jexec ${jname} ifconfig ${epair}b ether | awk '$1~/ether/{print$2}'`
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our_mac=`ifconfig ${epair}a ether | awk '$1~/ether/{print$2}'`
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our_ll_ip=`ifconfig ${epair}a inet6 | awk '$1~/inet6/&& $2~/^fe80:/{print$2}' | awk -F% '{print$1}'`
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# wait for DAD to complete
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while [ `jexec ${jname} ifconfig ${epair}b inet6 | grep -c tentative` != "0" ]; do
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sleep 0.1
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done
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while [ `ifconfig ${epair}a inet6 | grep -c tentative` != "0" ]; do
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sleep 0.1
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done
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# Add static route back to us
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atf_check -s exit:0 -o ignore jexec ${jname} route add -6 -host ${dst_ip} ${our_ll_ip}%${epair}b
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jexec ${jname} sysctl net.inet6.ip6.forwarding=1
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# As we're doing router-on-the-stick, turn sending IP redirects off:
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jexec ${jname} sysctl net.inet6.ip6.redirect=0
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atf_check -s exit:0 $(atf_get_srcdir)/${script_name} \
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--test_name fwd_ip6_icmp \
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--smac ${our_mac} --dmac ${jail_mac} \
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--sip ${src_ip} --dip ${dst_ip} \
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--iface ${epair}a
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# check counters are valid
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atf_check -o match:'1 packet forwarded' jexec ${jname} netstat -sp ip6
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}
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fwd_ip6_gu_icmp_gw_ll_fast_success_cleanup() {
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vnet_cleanup
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}
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atf_test_case "fwd_ip6_gu_icmp_iface_slow_success" "cleanup"
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fwd_ip6_gu_icmp_iface_slow_success_head() {
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atf_set descr 'Test valid IPv6 global unicast fast-forwarding to interface'
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atf_set require.user root
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atf_set require.progs scapy
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}
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fwd_ip6_gu_icmp_iface_slow_success_body() {
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ids=65526
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id=`printf "%x" ${ids}`
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if [ $$ -gt 65535 ]; then
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xl=`printf "%x" $(($$ - 65535))`
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yl="1"
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else
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xl=`printf "%x" $$`
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yl=""
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fi
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vnet_init
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ip6a="2001:db8:6666:0000:${yl}:${id}:1:${xl}"
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ip6b="2001:db8:6666:0000:${yl}:${id}:2:${xl}"
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plen=96
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src_ip="2001:db8:6666:0000:${yl}:${id}:3:${xl}"
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script_name="../common/sender.py"
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epair=$(vnet_mkepair)
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ifconfig ${epair}a up
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ifconfig ${epair}a inet6 ${ip6a}/${plen}
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jname="v6t-${id}-${yl}-${xl}"
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vnet_mkjail ${jname} ${epair}b
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jexec ${jname} ifconfig ${epair}b up
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jexec ${jname} ifconfig ${epair}b inet6 ${ip6b}/${plen}
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jail_mac=`jexec ${jname} ifconfig ${epair}b ether | awk '$1~/ether/{print$2}'`
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our_mac=`ifconfig ${epair}a ether | awk '$1~/ether/{print$2}'`
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# wait for DAD to complete
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while [ `jexec ${jname} ifconfig ${epair}b inet6 | grep -c tentative` != "0" ]; do
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sleep 0.1
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done
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while [ `ifconfig ${epair}a inet6 | grep -c tentative` != "0" ]; do
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sleep 0.1
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done
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jexec ${jname} sysctl net.inet6.ip6.forwarding=1
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# Do not turn off route redirects to ensure slow path is on
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atf_check -s exit:0 $(atf_get_srcdir)/${script_name} \
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--test_name fwd_ip6_icmp \
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--smac ${our_mac} --dmac ${jail_mac} \
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--sip ${src_ip} --dip ${ip6a} \
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--iface ${epair}a
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# check counters are valid
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atf_check -o match:'1 packet forwarded' jexec ${jname} netstat -sp ip6
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}
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fwd_ip6_gu_icmp_iface_slow_success_cleanup() {
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vnet_cleanup
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}
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atf_test_case "fwd_ip6_gu_icmp_gw_gu_slow_success" "cleanup"
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fwd_ip6_gu_icmp_gw_gu_slow_success_head() {
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atf_set descr 'Test valid IPv6 global unicast fast-forwarding to GU gw'
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atf_set require.user root
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atf_set require.progs scapy
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}
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fwd_ip6_gu_icmp_gw_gu_slow_success_body() {
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ids=65525
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id=`printf "%x" ${ids}`
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if [ $$ -gt 65535 ]; then
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xl=`printf "%x" $(($$ - 65535))`
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yl="1"
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else
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xl=`printf "%x" $$`
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yl=""
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fi
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vnet_init
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ip6a="2001:db8:6666:0000:${yl}:${id}:1:${xl}"
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ip6b="2001:db8:6666:0000:${yl}:${id}:2:${xl}"
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plen=96
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src_ip="2001:db8:6666:0000:${yl}:${id}:3:${xl}"
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dst_ip="2001:db8:6666:0000:${yl}:${id}:4:${xl}"
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script_name="../common/sender.py"
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epair=$(vnet_mkepair)
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ifconfig ${epair}a up
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ifconfig ${epair}a inet6 ${ip6a}/${plen}
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jname="v6t-${id}-${yl}-${xl}"
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vnet_mkjail ${jname} ${epair}b
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jexec ${jname} ifconfig ${epair}b up
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jexec ${jname} ifconfig ${epair}b inet6 ${ip6b}/${plen}
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jail_mac=`jexec ${jname} ifconfig ${epair}b ether | awk '$1~/ether/{print$2}'`
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our_mac=`ifconfig ${epair}a ether | awk '$1~/ether/{print$2}'`
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# wait for DAD to complete
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while [ `jexec ${jname} ifconfig ${epair}b inet6 | grep -c tentative` != "0" ]; do
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sleep 0.1
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done
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while [ `ifconfig ${epair}a inet6 | grep -c tentative` != "0" ]; do
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sleep 0.1
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done
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# Add static route back to us
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jexec ${jname} route add -6 -host ${dst_ip} ${ip6a}
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jexec ${jname} sysctl net.inet6.ip6.forwarding=1
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# Do not turn off route redirects to ensure slow path is on
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atf_check -s exit:0 \
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$(atf_get_srcdir)/${script_name} \
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--test_name fwd_ip6_icmp \
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--smac ${our_mac} --dmac ${jail_mac} \
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--sip ${src_ip} --dip ${dst_ip} \
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--iface ${epair}a
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jexec ${jname} netstat -sp ip6
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# check counters are valid
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atf_check -o match:'1 packet forwarded' jexec ${jname} netstat -sp ip6
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}
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fwd_ip6_gu_icmp_gw_gu_slow_success_cleanup() {
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vnet_cleanup
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}
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atf_test_case "fwd_ip6_gu_icmp_gw_ll_slow_success" "cleanup"
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fwd_ip6_gu_icmp_gw_ll_slow_success_head() {
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atf_set descr 'Test valid IPv6 global unicast fast-forwarding to LL gw'
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atf_set require.user root
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atf_set require.progs scapy
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}
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fwd_ip6_gu_icmp_gw_ll_slow_success_body() {
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ids=65524
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id=`printf "%x" ${ids}`
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if [ $$ -gt 65535 ]; then
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xl=`printf "%x" $(($$ - 65535))`
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yl="1"
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else
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xl=`printf "%x" $$`
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yl=""
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fi
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vnet_init
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ip6a="2001:db8:6666:0000:${yl}:${id}:1:${xl}"
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ip6b="2001:db8:6666:0000:${yl}:${id}:2:${xl}"
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plen=96
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src_ip="2001:db8:6666:0000:${yl}:${id}:3:${xl}"
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dst_ip="2001:db8:6666:0000:${yl}:${id}:4:${xl}"
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script_name="../common/sender.py"
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epair=$(vnet_mkepair)
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ifconfig ${epair}a up
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ifconfig ${epair}a inet6 ${ip6a}/${plen}
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jname="v6t-${id}-${yl}-${xl}"
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vnet_mkjail ${jname} ${epair}b
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jexec ${jname} ifconfig ${epair}b up
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jexec ${jname} ifconfig ${epair}b inet6 ${ip6b}/${plen}
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jail_mac=`jexec ${jname} ifconfig ${epair}b ether | awk '$1~/ether/{print$2}'`
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our_mac=`ifconfig ${epair}a ether | awk '$1~/ether/{print$2}'`
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our_ll_ip=`ifconfig ${epair}a inet6 | awk '$1~/inet6/&& $2~/^fe80:/{print$2}' | awk -F% '{print$1}'`
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# wait for DAD to complete
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while [ `jexec ${jname} ifconfig ${epair}b inet6 | grep -c tentative` != "0" ]; do
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sleep 0.1
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done
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while [ `ifconfig ${epair}a inet6 | grep -c tentative` != "0" ]; do
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sleep 0.1
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done
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# Add static route back to us
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atf_check -s exit:0 -o ignore jexec ${jname} route add -6 -host ${dst_ip} ${our_ll_ip}%${epair}b
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jexec ${jname} sysctl net.inet6.ip6.forwarding=1
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# Do not turn off route redirects to ensure slow path is on
|
|
|
|
atf_check -s exit:0 $(atf_get_srcdir)/${script_name} \
|
|
--test_name fwd_ip6_icmp \
|
|
--smac ${our_mac} --dmac ${jail_mac} \
|
|
--sip ${src_ip} --dip ${dst_ip} \
|
|
--iface ${epair}a
|
|
|
|
# check counters are valid
|
|
atf_check -o match:'1 packet forwarded' jexec ${jname} netstat -sp ip6
|
|
}
|
|
|
|
fwd_ip6_gu_icmp_gw_ll_slow_success_cleanup() {
|
|
|
|
vnet_cleanup
|
|
}
|
|
|
|
atf_test_case "fwd_ip6_blackhole" "cleanup"
|
|
fwd_ip6_blackhole_head() {
|
|
|
|
atf_set descr 'Test blackhole routing'
|
|
atf_set require.user root
|
|
}
|
|
|
|
fwd_ip6_blackhole_body() {
|
|
jname="v6t-fwd_ip6_blackhole"
|
|
|
|
vnet_init
|
|
|
|
epair=$(vnet_mkepair)
|
|
epair_out=$(vnet_mkepair)
|
|
|
|
ifconfig ${epair}a inet6 2001:db8::2/64 up no_dad
|
|
|
|
vnet_mkjail ${jname} ${epair}b ${epair_out}b
|
|
jexec ${jname} ifconfig lo0 inet6 ::1/128 up no_dad
|
|
jexec ${jname} ifconfig ${epair}b inet6 2001:db8::1/64 up no_dad
|
|
jexec ${jname} ifconfig ${epair_out}b inet6 2001:db8:1::1/64 up no_dad
|
|
jexec ${jname} sysctl net.inet6.ip6.forwarding=1
|
|
|
|
route -6 add default 2001:db8::1
|
|
|
|
atf_check -s exit:2 -o ignore \
|
|
ping6 -c 1 -t 1 2001:db8:1::2
|
|
atf_check -s exit:0 -o match:"0 packets not forwardable" \
|
|
jexec ${jname} netstat -s -p ip6
|
|
|
|
# Create blackhole route
|
|
jexec ${jname} route -6 add 2001:db8:1::2 -blackhole
|
|
|
|
# Force slow path
|
|
jexec ${jname} sysctl net.inet6.ip6.redirect=1
|
|
atf_check -s exit:2 -o ignore \
|
|
ping6 -c 1 -t 1 2001:db8:1::2
|
|
atf_check -s exit:0 -o match:"1 packet not forwardable" \
|
|
jexec ${jname} netstat -s -p ip6
|
|
|
|
# Now try the fast path
|
|
jexec ${jname} sysctl net.inet6.ip6.redirect=0
|
|
atf_check -s exit:2 -o ignore \
|
|
ping6 -c 1 -t 1 2001:db8:1::2
|
|
atf_check -s exit:0 -o match:"2 packets not forwardable" \
|
|
jexec ${jname} netstat -s -p ip6
|
|
}
|
|
|
|
fwd_ip6_blackhole_cleanup() {
|
|
|
|
vnet_cleanup
|
|
}
|
|
|
|
atf_init_test_cases()
|
|
{
|
|
|
|
atf_add_test_case "fwd_ip6_gu_icmp_iface_fast_success"
|
|
atf_add_test_case "fwd_ip6_gu_icmp_gw_gu_fast_success"
|
|
atf_add_test_case "fwd_ip6_gu_icmp_gw_ll_fast_success"
|
|
atf_add_test_case "fwd_ip6_gu_icmp_iface_slow_success"
|
|
atf_add_test_case "fwd_ip6_gu_icmp_gw_gu_slow_success"
|
|
atf_add_test_case "fwd_ip6_gu_icmp_gw_ll_slow_success"
|
|
atf_add_test_case "fwd_ip6_blackhole"
|
|
}
|
|
|
|
# end
|
|
|