net tests: basic test case for bpf(4)'s ability to set vlan pcp
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	# $FreeBSD$			#!/usr/bin/env python3
	#			#
	# SPDX-License-Identifier: BSD-2-Clause-FreeBSD			# SPDX-License-Identifier: BSD-2-Clause
	#			#
	# Copyright (c) 2017 Kristof Provost <kp@FreeBSD.org>			# Copyright (c) 2021 Rubicon Communications, LLC (Netgate).
	#			#
	# Redistribution and use in source and binary forms, with or without			# Redistribution and use in source and binary forms, with or without
	# modification, are permitted provided that the following conditions			# modification, are permitted provided that the following conditions
	# are met:			# are met:
	# 1. Redistributions of source code must retain the above copyright			# 1. Redistributions of source code must retain the above copyright
	# notice, this list of conditions and the following disclaimer.			# notice, this list of conditions and the following disclaimer.
	# 2. Redistributions in binary form must reproduce the above copyright			# 2. Redistributions in binary form must reproduce the above copyright
	# notice, this list of conditions and the following disclaimer in the			# notice, this list of conditions and the following disclaimer in the
	# documentation and/or other materials provided with the distribution.			# documentation and/or other materials provided with the distribution.
	#			#
	# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND			# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
	# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE			# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE			# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE			# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
	# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL			# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS			# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)			# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT			# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY			# 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			# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	# SUCH DAMAGE.			# SUCH DAMAGE.
	#

	import threading			import argparse
				import logging
				logging.getLogger("scapy").setLevel(logging.CRITICAL)
	import scapy.all as sp			import scapy.all as sp
				import sys
				import os
				curdir = os.path.dirname(os.path.realpath(__file__))
				netpfil_common = curdir + "/../netpfil/common"
				sys.path.append(netpfil_common)
				from sniffer import Sniffer

	class Sniffer(threading.Thread):			def check_pcp(args, packet):
	def __init__(self, args, check_function, recvif=None):			vlan = packet.getlayer(sp.Dot1Q)
	threading.Thread.__init__(self)

	self._args = args			if vlan is None:
	if recvif is not None:			return False
	self._recvif = recvif
	else:
	self._recvif = args.recvif[0]
	self._check_function = check_function
	self.foundCorrectPacket = False

	self.start()			if not packet.getlayer(sp.BOOTP):
				return False

	def _checkPacket(self, packet):			if vlan.prio == int(args.expect_pcp[0]):
	ret = self._check_function(self._args, packet)			return True
	if ret:
	self.foundCorrectPacket = True
	return ret

	def run(self):			return False
	self.packets = sp.sniff(iface=self._recvif,
	stop_filter=self._checkPacket, timeout=3)			def main():
				parser = argparse.ArgumentParser("pcp.py",
				description="PCP test tool")
				parser.add_argument('--recvif', nargs=1,
				required=True,
				help='The interface where to look for packets to check')
				parser.add_argument('--expect-pcp', nargs=1,
				help='The expected PCP value on VLAN packets')

				args = parser.parse_args()

				sniffer = Sniffer(args, check_pcp, recvif=args.recvif[0], timeout=20)

				sniffer.join()

				if sniffer.foundCorrectPacket:
				sys.exit(0)

				sys.exit(1)

				if __name__ == '__main__':
				main()

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tests/sys/netpfil/common/sniffer.py

net tests: basic test case for bpf(4)'s ability to set vlan pcpClosedPublicActions

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Diff 92766

tests/sys/net/Makefile

tests/sys/net/dhclient_pcp.conf

tests/sys/net/if_vlan.sh

tests/sys/net/pcp.py

tests/sys/netpfil/common/sniffer.py

net tests: basic test case for bpf(4)'s ability to set vlan pcp
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