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diff --git a/tests/sys/netpfil/pf/Makefile b/tests/sys/netpfil/pf/Makefile
--- a/tests/sys/netpfil/pf/Makefile
+++ b/tests/sys/netpfil/pf/Makefile
@@ -22,6 +22,7 @@
pfsync \
proxy \
rdr \
+ ridentifier \
route_to \
rules_counter \
set_skip \
diff --git a/tests/sys/netpfil/pf/ridentifier.sh b/tests/sys/netpfil/pf/ridentifier.sh
new file mode 100644
--- /dev/null
+++ b/tests/sys/netpfil/pf/ridentifier.sh
@@ -0,0 +1,108 @@
+# $FreeBSD$
+#
+# SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+#
+# Copyright (c) 2021 Rubicon Communications, LLC (Netgate)
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+
+. $(atf_get_srcdir)/utils.subr
+
+atf_test_case "basic" "cleanup"
+basic_head()
+{
+ atf_set descr 'Test ridentifier keyword'
+ atf_set require.user root
+}
+
+basic_body()
+{
+ pft_init
+ pflog_init
+
+ epair=$(vnet_mkepair)
+
+ ifconfig ${epair}a 192.0.2.1/24 up
+
+ vnet_mkjail alcatraz ${epair}b
+ jexec alcatraz ifconfig lo0 up
+ jexec alcatraz ifconfig ${epair}b 192.0.2.2/24 up
+ jexec alcatraz /usr/sbin/inetd -p inetd-alcatraz.pid $(atf_get_srcdir)/echo_inetd.conf
+
+ # Sanity check
+ atf_check -s exit:0 -o ignore ping -c 1 192.0.2.2
+
+ jexec alcatraz pfctl -e
+ jexec alcatraz ifconfig pflog0 up
+ pft_set_rules alcatraz \
+ "pass in log" \
+ "pass in log proto tcp ridentifier 1234"
+
+ jexec alcatraz tcpdump --immediate-mode -n -e -i pflog0 > tcpdump.log &
+ sleep 1
+
+ echo "test" | nc -N 192.0.2.2 7
+ atf_check -s exit:0 -o ignore ping -c 1 192.0.2.2
+
+ sleep 1
+ jexec alcatraz killall tcpdump
+
+ # Make sure we spotted the ridentifier
+ atf_check -s exit:0 -o ignore \
+ grep 'rule 1/0.*ridentifier 1234' tcpdump.log
+ # But not on the !TCP traffic
+ atf_check -s exit:1 -o ignore \
+ grep 'rule 0/0.*ridentifier' tcpdump.log
+
+ # Now try with antispoof rules
+ pft_set_rules alcatraz \
+ "pass in log" \
+ "antispoof log for ${epair}b ridentifier 4321"
+
+ jexec alcatraz tcpdump --immediate-mode -n -e -i pflog0 > tcpdump.log &
+ sleep 1
+
+ # Without explicit rules for lo0 we're going to drop packets to ourself
+ atf_check -s exit:2 -o ignore -e ignore \
+ jexec alcatraz ping -c 1 -t 1 192.0.2.2
+
+ sleep 1
+ jexec alcatraz killall tcpdump
+
+ cat tcpdump.log
+
+ # Make sure we spotted the ridentifier
+ atf_check -s exit:0 -o ignore \
+ grep 'rule 2/0.*ridentifier 4321' tcpdump.log
+}
+
+basic_cleanup()
+{
+ pft_cleanup
+ rm -f inetd-alcatraz.pid
+ rm -f tcpdump.log
+}
+
+atf_init_test_cases()
+{
+ atf_add_test_case "basic"
+}
diff --git a/tests/sys/netpfil/pf/utils.subr b/tests/sys/netpfil/pf/utils.subr
--- a/tests/sys/netpfil/pf/utils.subr
+++ b/tests/sys/netpfil/pf/utils.subr
@@ -46,6 +46,13 @@
fi
}
+pflog_init()
+{
+ if ! kldstat -q -m pflog; then
+ atf_skip "This test requires pflog"
+ fi
+}
+
pft_set_rules()
{
jname=$1

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