git: f7e56b482606 - stable/12 - pf tests: Basic adaptive mode syncookie test
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Date: Wed, 06 Oct 2021 08:47:33 UTC
The branch stable/12 has been updated by kp: URL: https://cgit.FreeBSD.org/src/commit/?id=f7e56b48260646f8b1d5d619a92ca1b2c2d26efc commit f7e56b48260646f8b1d5d619a92ca1b2c2d26efc Author: Kristof Provost <kp@FreeBSD.org> AuthorDate: 2021-09-25 13:05:02 +0000 Commit: Kristof Provost <kp@FreeBSD.org> CommitDate: 2021-10-06 08:46:58 +0000 pf tests: Basic adaptive mode syncookie test MFC after: 1 week Sponsored by: Modirum MDPay Differential Revision: https://reviews.freebsd.org/D32139 (cherry picked from commit 2f20d80692ceb584842a7642562fc9f610a5b661) --- tests/sys/netpfil/pf/syncookie.sh | 50 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) diff --git a/tests/sys/netpfil/pf/syncookie.sh b/tests/sys/netpfil/pf/syncookie.sh index 8a4005d0fc6d..d85beac1a4d1 100644 --- a/tests/sys/netpfil/pf/syncookie.sh +++ b/tests/sys/netpfil/pf/syncookie.sh @@ -168,9 +168,59 @@ nostate_cleanup() pft_cleanup } +atf_test_case "adaptive" "cleanup" +adaptive_head() +{ + atf_set descr 'Adaptive mode test' + atf_set require.user root + atf_set require.progs scapy +} + +adaptive_body() +{ + pft_init + + epair=$(vnet_mkepair) + ifconfig ${epair}a 192.0.2.2/24 up + + vnet_mkjail alcatraz ${epair}b + jexec alcatraz ifconfig ${epair}b 192.0.2.1/24 up + + jexec alcatraz pfctl -e + pft_set_rules alcatraz \ + "set limit states 100" \ + "set syncookies adaptive (start 10%%, end 5%%)" \ + "pass in" \ + "pass out" + + # Sanity check + atf_check -s exit:0 -o ignore ping -c 1 192.0.2.1 + + # Now syn flood to create many states + ${common_dir}/pft_synflood.py \ + --sendif ${epair}a \ + --to 192.0.2.2 \ + --count 100 + + # Adaptive mode should kick in and stop us from creating more than + # about 10 states + states=$(jexec alcatraz pfctl -ss | grep tcp | wc -l) + if [ "$states" -gt 20 ]; + then + echo "$states" + atf_fail "Found unexpected states" + fi +} + +adaptive_cleanup() +{ + pft_cleanup +} + atf_init_test_cases() { atf_add_test_case "basic" atf_add_test_case "forward" atf_add_test_case "nostate" + atf_add_test_case "adaptive" }