git: 2f20d80692ce - main - pf tests: Basic adaptive mode syncookie test
Kristof Provost
kp at FreeBSD.org
Wed Sep 29 13:42:36 UTC 2021
The branch main has been updated by kp:
URL: https://cgit.FreeBSD.org/src/commit/?id=2f20d80692ceb584842a7642562fc9f610a5b661
commit 2f20d80692ceb584842a7642562fc9f610a5b661
Author: Kristof Provost <kp at FreeBSD.org>
AuthorDate: 2021-09-25 13:05:02 +0000
Commit: Kristof Provost <kp at FreeBSD.org>
CommitDate: 2021-09-29 13:42:01 +0000
pf tests: Basic adaptive mode syncookie test
MFC after: 1 week
Sponsored by: Modirum MDPay
Differential Revision: https://reviews.freebsd.org/D32139
---
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"
}
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