1#- 2# SPDX-License-Identifier: BSD-2-Clause 3# 4# Copyright (c) 2019 Netflix, Inc. 5# 6# Redistribution and use in source and binary forms, with or without 7# modification, are permitted provided that the following conditions 8# are met: 9# 1. Redistributions of source code must retain the above copyright 10# notice, this list of conditions and the following disclaimer. 11# 2. Redistributions in binary form must reproduce the above copyright 12# notice, this list of conditions and the following disclaimer in the 13# documentation and/or other materials provided with the distribution. 14# 15# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25# SUCH DAMAGE. 26# 27 28. $(atf_get_srcdir)/../../common/vnet.subr 29 30frag6_head() 31{ 32 atf_set descr 'Test IPv6 fragmentation code' 33 atf_set require.user root 34 atf_set require.progs scapy 35} 36 37frag6_body() 38{ 39 ids=${1:="65533"} 40 shift 41 id=`printf "%x" ${ids}` 42 if [ $$ -gt 65535 ]; then 43 xl=`printf "%x" $(($$ - 65535))` 44 yl="1" 45 else 46 xl=`printf "%x" $$` 47 yl="" 48 fi 49 50 vnet_init 51 52 ip6a="2001:db8:6666:6666:${yl}:${id}:1:${xl}" 53 ip6b="2001:db8:6666:6666:${yl}:${id}:2:${xl}" 54 55 epair=$(vnet_mkepair) 56 ifconfig ${epair}a up 57 ifconfig ${epair}a inet6 ${ip6a}/64 58 59 jname="v6t-${id}-${yl}-${xl}" 60 vnet_mkjail ${jname} ${epair}b 61 jexec ${jname} sysctl net.inet6.ip6.dad_count=0 62 jexec ${jname} ifconfig ${epair}b up 63 jexec ${jname} ifconfig ${epair}b inet6 ${ip6b}/64 64 65 # Set max fragment reassembly time to 2 seconds 66 jexec ${jname} sysctl net.inet6.ip6.fraglifetime_ms=2000 67 68 # Let IPv6 ND do its thing. 69 while [ `ifconfig ${epair}a inet6 | grep -c tentative` != "0" ]; do 70 sleep 0.1 71 done 72 73 # We need to try to make sure all expiry happened, otherwise there might 74 # be global fragments queued. (This still does not rule out that there 75 # are no other fragments queued anywhere else in the system). 76 i=0 77 while test $i -lt 60; do 78 nf=`sysctl -n net.inet6.ip6.frag6_nfrags` 79 case ${nf} in 80 0) break ;; 81 esac 82 sleep 1 83 i=$((i + 1)) 84 done 85 case ${nf} in 86 0) ;; 87 *) atf_fail "Global frag6_nfrags count is not zero but ${nf}" ;; 88 esac 89 90 pretestf=$2 91 case "${pretestf}" in 92 "") ;; 93 [A-Za-z0-9_]*) 94 eval ${pretestf} "${jname}" "${epair}b" 95 ;; 96 esac 97 98 # Clear statistics. 99 jexec ${jname} netstat -z -s > /dev/null 100 101 # Run fragment tests. 102 pyname=$(atf_get ident) 103 pyname=${pyname%*_[0-9]} 104 atf_check -s exit:0 $(atf_get_srcdir)/${pyname}.py \ 105 --sendif ${epair}a \ 106 --recvif ${epair}a \ 107 --src ${ip6a} \ 108 --to ${ip6b} 109 110 checkf=$1 111 case "${checkf}" in 112 "") ;; 113 [A-Za-z0-9_]*) 114 eval ${checkf} "${jname}" "${epair}b" 115 ;; 116 esac 117} 118 119frag6_cleanup() 120{ 121 122 vnet_cleanup 123} 124 125# end 126