pf tests: MAC address filtering test

Test the MAC address filtering capability in the new 'ether' feature in
pf.

Sponsored by:	Rubicon Communications, LLC ("Netgate")
Differential Revision:	https://reviews.freebsd.org/D31743

2 files changed, 89 insertions, 0 deletions

diff --git a/tests/sys/netpfil/pf/Makefile b/tests/sys/netpfil/pf/Makefile
index e3079c7c139d..6521d7fa6218 100644
--- a/tests/sys/netpfil/pf/Makefile
+++ b/tests/sys/netpfil/pf/Makefile
@@ -9,6 +9,7 @@ ATF_TESTS_SH+=	altq \
 		anchor \
 		checksum \
 		dup \
+		ether \
 		forward \
 		fragmentation \
 		get_state \
diff --git a/tests/sys/netpfil/pf/ether.sh b/tests/sys/netpfil/pf/ether.sh
new file mode 100644
index 000000000000..5724d6102505
--- /dev/null
+++ b/tests/sys/netpfil/pf/ether.sh
@@ -0,0 +1,88 @@
+# $FreeBSD$
+#
+# SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+#
+# Copyright © 2021. Rubicon Communications, LLC (Netgate). All Rights Reserved.
+#
+# 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.
+
+. $(atf_get_srcdir)/utils.subr
+
+atf_test_case "mac" "cleanup"
+mac_head()
+{
+	atf_set descr 'Test MAC address filtering'
+	atf_set require.user root
+}
+
+mac_body()
+{
+	pft_init
+
+	epair=$(vnet_mkepair)
+	epair_a_mac=$(ifconfig ${epair}a ether | awk '/ether/ { print $2; }')
+
+	ifconfig ${epair}a 192.0.2.1/24 up
+
+	vnet_mkjail alcatraz ${epair}b
+	jexec alcatraz ifconfig ${epair}b 192.0.2.2/24 up
+
+	pft_set_rules alcatraz \
+		"ether block from ${epair_a_mac}"
+
+	atf_check -s exit:0 -o ignore ping -c 1 -t 1 192.0.2.2
+
+	# Now enable. Ping should fail.
+	jexec alcatraz pfctl -e
+
+	atf_check -s exit:2 -o ignore ping -c 1 -t 1 192.0.2.2
+
+	# Should still fail for 'to'
+	pft_set_rules alcatraz \
+		"ether block to ${epair_a_mac}"
+	atf_check -s exit:2 -o ignore ping -c 1 -t 1 192.0.2.2
+
+	# Succeeds if we block a different MAC address
+	pft_set_rules alcatraz \
+		"ether block to 00:01:02:03:04:05"
+	atf_check -s exit:0 -o ignore ping -c 1 -t 1 192.0.2.2
+
+	# Now try this with an interface specified
+	pft_set_rules alcatraz \
+		"ether block on ${epair}b from ${epair_a_mac}"
+	atf_check -s exit:2 -o ignore ping -c 1 -t 1 192.0.2.2
+
+	# Wrong interface should not match
+	pft_set_rules alcatraz \
+		"ether block on ${epair}a from ${epair_a_mac}"
+	atf_check -s exit:0 -o ignore ping -c 1 -t 1 192.0.2.2
+}
+
+mac_cleanup()
+{
+	pft_cleanup
+}
+
+atf_init_test_cases()
+{
+	atf_add_test_case "mac"
+}