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 ${epair}a & 50 51 # Generate traffic 52 ping -f 192.0.2.2 >/dev/null 2>&1 & 53 54 # Now let this run for 10 seconds 55 sleep 10 56} 57multi_read_cleanup() 58{ 59 vnet_cleanup 60} 61 62atf_test_case "inject" "cleanup" 63inject_head() 64{ 65 atf_set descr 'Catch packets, re-inject and check' 66 atf_set require.user root 67} 68inject_body() 69{ 70 vnet_init 71 72 if sysctl -q kern.features.rss >/dev/null; then 73 atf_skip "This test is flaky with RSS" 74 fi 75 76 epair=$(vnet_mkepair) 77 ifconfig ${epair}a inet 192.0.2.1/24 up 78 vnet_mkjail alcatraz ${epair}b 79 jexec alcatraz ifconfig ${epair}b inet 192.0.2.2/24 up 80 81 in=$(pwd)/$(mktemp in.pcap.XXXXXXXXXX) 82 in2=$(pwd)/$(mktemp in2.pcap.XXXXXXXXXX) 83 out=$(pwd)/$(mktemp out.pcap.XXXXXXXXXX) 84 85 # write dump on jail side, with "in" direction 86 jexec alcatraz $(atf_get_srcdir)/pcap-test \ 87 capture epair0b $in 3 in > out & pid=$! 88 while ! jexec alcatraz netstat -B | grep -q epair0b.*pcap-test; do 89 sleep 0.01; 90 done 91 atf_check -s exit:0 -o ignore ping -c 3 -i 0.1 192.0.2.2 92 atf_check -s exit:0 sh -c "wait $pid; exit $?" 93 atf_check -s exit:0 -o empty cat out 94 95 # inject dump on host side, recording on both sides 96 jexec alcatraz $(atf_get_srcdir)/pcap-test \ 97 capture epair0b $in2 3 in > jout & jpid=$! 98 while ! jexec alcatraz netstat -B | grep -q epair0b.*pcap-test; do 99 sleep 0.01; 100 done 101 $(atf_get_srcdir)/pcap-test \ 102 capture epair0a $out 3 out > hout & hpid=$! 103 while ! netstat -B | grep -q epair0a.*pcap-test; do 104 sleep 0.01; 105 done 106 atf_check -s exit:0 -o empty -e empty $(atf_get_srcdir)/pcap-test \ 107 inject epair0a $in 3 108 atf_check -s exit:0 sh -c "wait $jpid; exit $?" 109 atf_check -s exit:0 -o empty cat jout 110 atf_check -s exit:0 sh -c "wait $hpid; exit $?" 111 atf_check -s exit:0 -o empty cat hout 112 113 # all 3 dumps should be equal 114 atf_check -s exit:0 -o empty -e empty $(atf_get_srcdir)/pcap-test \ 115 compare $in $out 116 atf_check -s exit:0 -o empty -e empty $(atf_get_srcdir)/pcap-test \ 117 compare $in $in2 118} 119inject_cleanup() 120{ 121 vnet_cleanup 122} 123 124atf_init_test_cases() 125{ 126 atf_add_test_case "multi_read" 127 atf_add_test_case "inject" 128} 129