1## 2# SPDX-License-Identifier: BSD-2-Clause 3# 4# Copyright (c) 2025 Rubicon Communications, LLC ("Netgate") 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. $(atf_get_srcdir)/../../common/vnet.subr 28 29atf_test_case "multi_read" "cleanup" 30multi_read_head() 31{ 32 atf_set descr 'Test multiple readers on /dev/bpf' 33 atf_set require.user root 34} 35multi_read_body() 36{ 37 vnet_init 38 39 epair=$(vnet_mkepair) 40 ifconfig ${epair}a inet 192.0.2.1/24 up 41 42 vnet_mkjail alcatraz ${epair}b 43 jexec alcatraz ifconfig ${epair}b inet 192.0.2.2/24 up 44 45 atf_check -s exit:0 -o ignore \ 46 ping -c 1 192.0.2.2 47 48 # Start a multi-thread (or multi-process) read on bpf 49 $(atf_get_srcdir)/bpf_multi_read ${epair}a & 50 51 # Generate traffic 52 ping -f 192.0.2.2 >/dev/null 2>&1 & 53 54 # Now let this run for 10 seconds 55 sleep 10 56} 57multi_read_cleanup() 58{ 59 vnet_cleanup 60} 61 62atf_test_case "inject" "cleanup" 63inject_head() 64{ 65 atf_set descr 'Catch packets, re-inject and check' 66 atf_set require.user root 67} 68inject_body() 69{ 70 vnet_init 71 72 epair=$(vnet_mkepair) 73 ifconfig ${epair}a inet 192.0.2.1/24 up 74 vnet_mkjail alcatraz ${epair}b 75 jexec alcatraz ifconfig ${epair}b inet 192.0.2.2/24 up 76 77 in=$(pwd)/$(mktemp in.pcap.XXXXXXXXXX) 78 in2=$(pwd)/$(mktemp in2.pcap.XXXXXXXXXX) 79 out=$(pwd)/$(mktemp out.pcap.XXXXXXXXXX) 80 81 # write dump on jail side, with "in" direction 82 jexec alcatraz $(atf_get_srcdir)/pcap-test \ 83 capture epair0b $in 3 in > out & pid=$! 84 while ! jexec alcatraz netstat -B | grep -q epair0b.*pcap-test; do 85 sleep 0.01; 86 done 87 atf_check -s exit:0 -o ignore ping -c 3 -i 0.1 192.0.2.2 88 atf_check -s exit:0 sh -c "wait $pid; exit $?" 89 atf_check -s exit:0 -o empty cat out 90 91 # inject dump on host side, recording on both sides 92 jexec alcatraz $(atf_get_srcdir)/pcap-test \ 93 capture epair0b $in2 3 in > jout & jpid=$! 94 while ! jexec alcatraz netstat -B | grep -q epair0b.*pcap-test; do 95 sleep 0.01; 96 done 97 $(atf_get_srcdir)/pcap-test \ 98 capture epair0a $out 3 out > hout & hpid=$! 99 while ! netstat -B | grep -q epair0a.*pcap-test; do 100 sleep 0.01; 101 done 102 atf_check -s exit:0 -o empty -e empty $(atf_get_srcdir)/pcap-test \ 103 inject epair0a $in 3 104 atf_check -s exit:0 sh -c "wait $jpid; exit $?" 105 atf_check -s exit:0 -o empty cat jout 106 atf_check -s exit:0 sh -c "wait $hpid; exit $?" 107 atf_check -s exit:0 -o empty cat hout 108 109 # all 3 dumps should be equal 110 atf_check -s exit:0 -o empty -e empty $(atf_get_srcdir)/pcap-test \ 111 compare $in $out 112 atf_check -s exit:0 -o empty -e empty $(atf_get_srcdir)/pcap-test \ 113 compare $in $in2 114} 115inject_cleanup() 116{ 117 vnet_cleanup 118} 119 120atf_init_test_cases() 121{ 122 atf_add_test_case "multi_read" 123 atf_add_test_case "inject" 124} 125