tests: MACsec
Add some coverage for MACsec with the macsec_linux driver interface in wpa_supplicant. Signed-off-by: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen
parent
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commit
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1 changed files with 472 additions and 0 deletions
472
tests/hwsim/test_macsec.py
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472
tests/hwsim/test_macsec.py
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# Test cases for MACsec/MKA
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# Copyright (c) 2018, Jouni Malinen <j@w1.fi>
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#
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# This software may be distributed under the terms of the BSD license.
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# See README for more details.
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import logging
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logger = logging.getLogger()
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import os
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import signal
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import subprocess
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import time
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from wpasupplicant import WpaSupplicant
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import hwsim_utils
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from utils import HwsimSkip
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def cleanup_macsec():
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wpas = WpaSupplicant(global_iface='/tmp/wpas-wlan5')
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wpas.interface_remove("veth0")
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wpas.interface_remove("veth1")
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subprocess.call(["ip", "link", "del", "veth0"],
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stderr=open('/dev/null', 'w'))
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def test_macsec_psk(dev, apdev, params):
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"""MACsec PSK"""
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try:
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run_macsec_psk(dev, apdev, params, "macsec_psk")
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finally:
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cleanup_macsec()
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def test_macsec_psk_mka_life_time(dev, apdev, params):
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"""MACsec PSK - MKA life time"""
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try:
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run_macsec_psk(dev, apdev, params, "macsec_psk_mka_life_time")
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wpas = WpaSupplicant(global_iface='/tmp/wpas-wlan5')
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wpas.interface_remove("veth1")
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# Wait for live peer to be removed on veth0
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time.sleep(6.1)
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finally:
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cleanup_macsec()
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def test_macsec_psk_integ_only(dev, apdev, params):
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"""MACsec PSK (integrity only)"""
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try:
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run_macsec_psk(dev, apdev, params, "macsec_psk_integ_only",
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integ_only=True)
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finally:
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cleanup_macsec()
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def test_macsec_psk_port(dev, apdev, params):
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"""MACsec PSK (port)"""
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try:
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run_macsec_psk(dev, apdev, params, "macsec_psk_port",
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port0=65534, port1=65534)
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finally:
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cleanup_macsec()
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def test_macsec_psk_different_ports(dev, apdev, params):
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"""MACsec PSK (different ports)"""
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try:
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run_macsec_psk(dev, apdev, params, "macsec_psk_different_ports",
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port0=2, port1=3)
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finally:
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cleanup_macsec()
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def test_macsec_psk_shorter_ckn(dev, apdev, params):
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"""MACsec PSK (shorter CKN)"""
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try:
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ckn = "11223344"
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run_macsec_psk(dev, apdev, params, "macsec_psk_shorter_ckn",
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ckn0=ckn, ckn1=ckn)
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finally:
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cleanup_macsec()
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def test_macsec_psk_shorter_ckn2(dev, apdev, params):
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"""MACsec PSK (shorter CKN, unaligned)"""
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try:
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ckn = "112233"
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run_macsec_psk(dev, apdev, params, "macsec_psk_shorter_ckn2",
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ckn0=ckn, ckn1=ckn)
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finally:
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cleanup_macsec()
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def test_macsec_psk_ckn_mismatch(dev, apdev, params):
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"""MACsec PSK (CKN mismatch)"""
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try:
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ckn0 = "11223344"
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ckn1 = "1122334455667788"
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run_macsec_psk(dev, apdev, params, "macsec_psk_ckn_mismatch",
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ckn0=ckn0, ckn1=ckn1, expect_failure=True)
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finally:
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cleanup_macsec()
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def test_macsec_psk_cak_mismatch(dev, apdev, params):
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"""MACsec PSK (CAK mismatch)"""
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try:
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cak0 = 16*"11"
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cak1 = 16*"22"
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run_macsec_psk(dev, apdev, params, "macsec_psk_cak_mismatch",
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cak0=cak0, cak1=cak1, expect_failure=True)
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finally:
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cleanup_macsec()
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def test_macsec_psk_256(dev, apdev, params):
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"""MACsec PSK with 256-bit keys"""
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try:
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cak = "202122232425262728292a2b2c2d2e2f303132333435363738393a3b3c3d3e3f"
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run_macsec_psk(dev, apdev, params, "macsec_psk_256", cak0=cak, cak1=cak)
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finally:
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cleanup_macsec()
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def set_mka_psk_config(dev, mka_priority=None, integ_only=False, port=None,
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ckn=None, cak=None):
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dev.set("eapol_version", "3")
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dev.set("ap_scan", "0")
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dev.set("fast_reauth", "1")
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id = dev.add_network()
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dev.set_network(id, "key_mgmt", "NONE")
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if cak is None:
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cak = "000102030405060708090a0b0c0d0e0f"
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dev.set_network(id, "mka_cak", cak)
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if ckn is None:
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ckn = "000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f"
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dev.set_network(id, "mka_ckn", ckn)
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dev.set_network(id, "eapol_flags", "0")
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dev.set_network(id, "macsec_policy", "1")
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if integ_only:
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dev.set_network(id, "macsec_integ_only", "1")
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if mka_priority is not None:
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dev.set_network(id, "mka_priority", str(mka_priority))
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if port is not None:
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dev.set_network(id, "macsec_port", str(port))
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dev.select_network(id)
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def log_ip_macsec():
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cmd = subprocess.Popen([ "ip", "macsec", "show" ],
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stdout=subprocess.PIPE,
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stderr=open('/dev/null', 'w'))
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res = cmd.stdout.read()
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cmd.stdout.close()
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logger.info("ip macsec:\n" + res)
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def log_ip_link():
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cmd = subprocess.Popen([ "ip", "link", "show" ],
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stdout=subprocess.PIPE)
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res = cmd.stdout.read()
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cmd.stdout.close()
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logger.info("ip link:\n" + res)
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def run_macsec_psk(dev, apdev, params, prefix, integ_only=False, port0=None,
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port1=None, ckn0=None, ckn1=None, cak0=None, cak1=None,
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expect_failure=False):
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try:
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subprocess.check_call([ "ip", "link", "add", "veth0", "type", "veth",
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"peer", "name", "veth1" ])
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except subprocess.CalledProcessError:
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raise HwsimSkip("veth not supported (kernel CONFIG_VETH)")
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cap_veth0 = os.path.join(params['logdir'], prefix + ".veth0.pcap")
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cap_veth1 = os.path.join(params['logdir'], prefix + ".veth1.pcap")
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cap_macsec0 = os.path.join(params['logdir'], prefix + ".macsec0.pcap")
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cap_macsec1 = os.path.join(params['logdir'], prefix + ".macsec1.pcap")
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for i in range(2):
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subprocess.check_call([ "ip", "link", "set", "dev", "veth%d" % i,
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"up" ])
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cmd = {}
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cmd[0] = subprocess.Popen(['tcpdump', '-p', '-U', '-i', 'veth0',
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'-w', cap_veth0, '-s', '2000',
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'--immediate-mode'],
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stderr=open('/dev/null', 'w'))
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cmd[1] = subprocess.Popen(['tcpdump', '-p', '-U', '-i', 'veth1',
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'-w', cap_veth1, '-s', '2000',
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'--immediate-mode'],
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stderr=open('/dev/null', 'w'))
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wpas0 = WpaSupplicant(global_iface='/tmp/wpas-wlan5')
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try:
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wpas0.interface_add("veth0", driver="macsec_linux")
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except Exception, e:
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if "Failed to add a dynamic wpa_supplicant interface" in str(e):
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raise HwsimSkip("macsec supported (wpa_supplicant CONFIG_MACSEC, CONFIG_MACSEC_LINUX; kernel CONFIG_MACSEC)")
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raise
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wpas1 = WpaSupplicant(global_iface='/tmp/wpas-wlan5')
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wpas1.interface_add("veth1", driver="macsec_linux")
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set_mka_psk_config(wpas0, integ_only=integ_only, port=port0, ckn=ckn0,
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cak=cak0)
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set_mka_psk_config(wpas1, mka_priority=100, integ_only=integ_only,
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port=port1, ckn=ckn1, cak=cak1)
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log_ip_macsec()
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log_ip_link()
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logger.info("wpas0 STATUS:\n" + wpas0.request("STATUS"))
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logger.info("wpas1 STATUS:\n" + wpas1.request("STATUS"))
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logger.info("wpas0 STATUS-DRIVER:\n" + wpas0.request("STATUS-DRIVER"))
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logger.info("wpas1 STATUS-DRIVER:\n" + wpas1.request("STATUS-DRIVER"))
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macsec_ifname0 = wpas0.get_driver_status_field("parent_ifname")
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macsec_ifname1 = wpas1.get_driver_status_field("parent_ifname")
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for i in range(10):
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key_tx0 = int(wpas0.get_status_field("Number of Keys Distributed"))
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key_rx0 = int(wpas0.get_status_field("Number of Keys Received"))
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key_tx1 = int(wpas1.get_status_field("Number of Keys Distributed"))
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key_rx1 = int(wpas1.get_status_field("Number of Keys Received"))
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if key_rx0 > 0 and key_tx1 > 0:
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break
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time.sleep(1)
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if expect_failure:
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if key_tx0 != 0 or key_rx0 != 0 or key_tx1 != 0 or key_rx1 != 0:
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raise Exception("Unexpected key distribution")
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for i in range(len(cmd)):
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cmd[i].terminate()
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return
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cmd[2] = subprocess.Popen(['tcpdump', '-p', '-U', '-i', macsec_ifname0,
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'-w', cap_macsec0, '-s', '2000',
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'--immediate-mode'],
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stderr=open('/dev/null', 'w'))
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cmd[3] = subprocess.Popen(['tcpdump', '-p', '-U', '-i', macsec_ifname1,
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'-w', cap_macsec1, '-s', '2000',
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'--immediate-mode'],
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stderr=open('/dev/null', 'w'))
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time.sleep(0.5)
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logger.info("wpas0 STATUS:\n" + wpas0.request("STATUS"))
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logger.info("wpas1 STATUS:\n" + wpas1.request("STATUS"))
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log_ip_macsec()
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hwsim_utils.test_connectivity(wpas0, wpas1,
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ifname1=macsec_ifname0,
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ifname2=macsec_ifname1,
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send_len=1400)
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log_ip_macsec()
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time.sleep(1)
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for i in range(len(cmd)):
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cmd[i].terminate()
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def test_macsec_psk_ns(dev, apdev, params):
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"""MACsec PSK (netns)"""
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try:
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run_macsec_psk_ns(dev, apdev, params)
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finally:
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prefix = "macsec_psk_ns"
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pidfile = os.path.join(params['logdir'], prefix + ".pid")
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for i in range(2):
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was_running = False
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if os.path.exists(pidfile + str(i)):
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with open(pidfile + str(i), 'r') as f:
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pid = int(f.read().strip())
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logger.info("wpa_supplicant for wpas%d still running with pid %d - kill it" % (i, pid))
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was_running = True
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os.kill(pid, signal.SIGTERM)
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if was_running:
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time.sleep(1)
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subprocess.call(["ip", "netns", "exec", "ns0",
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"ip", "link", "del", "veth0"],
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stderr=open('/dev/null', 'w'))
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subprocess.call(["ip", "link", "del", "veth0"],
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stderr=open('/dev/null', 'w'))
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log_ip_link_ns()
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subprocess.call(["ip", "netns", "delete", "ns0"],
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stderr=open('/dev/null', 'w'))
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subprocess.call(["ip", "netns", "delete", "ns1"],
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stderr=open('/dev/null', 'w'))
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def log_ip_macsec_ns():
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cmd = subprocess.Popen([ "ip", "macsec", "show" ],
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stdout=subprocess.PIPE,
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stderr=open('/dev/null', 'w'))
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res = cmd.stdout.read()
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cmd.stdout.close()
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logger.info("ip macsec show:\n" + res)
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cmd = subprocess.Popen([ "ip", "netns", "exec", "ns0",
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"ip", "macsec", "show" ],
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stdout=subprocess.PIPE,
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stderr=open('/dev/null', 'w'))
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res = cmd.stdout.read()
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cmd.stdout.close()
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logger.info("ip macsec show (ns0):\n" + res)
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cmd = subprocess.Popen([ "ip", "netns", "exec", "ns1",
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"ip", "macsec", "show" ],
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stdout=subprocess.PIPE,
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stderr=open('/dev/null', 'w'))
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res = cmd.stdout.read()
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cmd.stdout.close()
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logger.info("ip macsec show (ns1):\n" + res)
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def log_ip_link_ns():
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cmd = subprocess.Popen([ "ip", "link", "show" ],
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stdout=subprocess.PIPE)
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res = cmd.stdout.read()
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cmd.stdout.close()
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logger.info("ip link:\n" + res)
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cmd = subprocess.Popen([ "ip", "netns", "exec", "ns0",
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"ip", "link", "show" ],
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stdout=subprocess.PIPE,
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stderr=open('/dev/null', 'w'))
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res = cmd.stdout.read()
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cmd.stdout.close()
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logger.info("ip link show (ns0):\n" + res)
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cmd = subprocess.Popen([ "ip", "netns", "exec", "ns1",
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"ip", "link", "show" ],
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stdout=subprocess.PIPE,
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stderr=open('/dev/null', 'w'))
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res = cmd.stdout.read()
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cmd.stdout.close()
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logger.info("ip link show (ns1):\n" + res)
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def write_conf(conffile, mka_priority=None):
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with open(conffile, 'w') as f:
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f.write("ctrl_interface=DIR=/var/run/wpa_supplicant\n")
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f.write("eapol_version=3\n")
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f.write("ap_scan=0\n")
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f.write("fast_reauth=1\n")
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f.write("network={\n")
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f.write(" key_mgmt=NONE\n")
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f.write(" mka_cak=000102030405060708090a0b0c0d0e0f\n")
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||||||
|
f.write(" mka_ckn=000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f\n")
|
||||||
|
if mka_priority is not None:
|
||||||
|
f.write(" mka_priority=%d\n" % mka_priority)
|
||||||
|
f.write(" eapol_flags=0\n")
|
||||||
|
f.write(" macsec_policy=1\n")
|
||||||
|
f.write("}\n")
|
||||||
|
|
||||||
|
def run_macsec_psk_ns(dev, apdev, params):
|
||||||
|
try:
|
||||||
|
subprocess.check_call([ "ip", "link", "add", "veth0", "type", "veth",
|
||||||
|
"peer", "name", "veth1" ])
|
||||||
|
except subprocess.CalledProcessError:
|
||||||
|
raise HwsimSkip("veth not supported (kernel CONFIG_VETH)")
|
||||||
|
|
||||||
|
prefix = "macsec_psk_ns"
|
||||||
|
conffile = os.path.join(params['logdir'], prefix + ".conf")
|
||||||
|
pidfile = os.path.join(params['logdir'], prefix + ".pid")
|
||||||
|
logfile0 = os.path.join(params['logdir'], prefix + ".veth0.log")
|
||||||
|
logfile1 = os.path.join(params['logdir'], prefix + ".veth1.log")
|
||||||
|
cap_veth0 = os.path.join(params['logdir'], prefix + ".veth0.pcap")
|
||||||
|
cap_veth1 = os.path.join(params['logdir'], prefix + ".veth1.pcap")
|
||||||
|
cap_macsec0 = os.path.join(params['logdir'], prefix + ".macsec0.pcap")
|
||||||
|
cap_macsec1 = os.path.join(params['logdir'], prefix + ".macsec1.pcap")
|
||||||
|
|
||||||
|
for i in range(2):
|
||||||
|
try:
|
||||||
|
subprocess.check_call([ "ip", "netns", "add", "ns%d" % i ])
|
||||||
|
except subprocess.CalledProcessError:
|
||||||
|
raise HwsimSkip("network namespace not supported (kernel CONFIG_NAMESPACES, CONFIG_NET_NS)")
|
||||||
|
subprocess.check_call([ "ip", "link", "set", "veth%d" % i,
|
||||||
|
"netns", "ns%d" %i ])
|
||||||
|
subprocess.check_call([ "ip", "netns", "exec", "ns%d" % i,
|
||||||
|
"ip", "link", "set", "dev", "veth%d" % i,
|
||||||
|
"up" ])
|
||||||
|
|
||||||
|
cmd = {}
|
||||||
|
cmd[0] = subprocess.Popen(['ip', 'netns', 'exec', 'ns0',
|
||||||
|
'tcpdump', '-p', '-U', '-i', 'veth0',
|
||||||
|
'-w', cap_veth0, '-s', '2000',
|
||||||
|
'--immediate-mode'],
|
||||||
|
stderr=open('/dev/null', 'w'))
|
||||||
|
cmd[1] = subprocess.Popen(['ip', 'netns', 'exec', 'ns1',
|
||||||
|
'tcpdump', '-p', '-U', '-i', 'veth1',
|
||||||
|
'-w', cap_veth1, '-s', '2000',
|
||||||
|
'--immediate-mode'],
|
||||||
|
stderr=open('/dev/null', 'w'))
|
||||||
|
|
||||||
|
write_conf(conffile + '0')
|
||||||
|
write_conf(conffile + '1', mka_priority=100)
|
||||||
|
|
||||||
|
prg = os.path.join(params['logdir'],
|
||||||
|
'alt-wpa_supplicant/wpa_supplicant/wpa_supplicant')
|
||||||
|
if not os.path.exists(prg):
|
||||||
|
prg = '../../wpa_supplicant/wpa_supplicant'
|
||||||
|
|
||||||
|
arg = [ "ip", "netns", "exec", "ns0",
|
||||||
|
prg, '-BdddtKW', '-P', pidfile + '0', '-f', logfile0,
|
||||||
|
'-g', '/tmp/wpas-veth0',
|
||||||
|
'-Dmacsec_linux', '-c', conffile + '0', '-i', "veth0" ]
|
||||||
|
logger.info("Start wpa_supplicant: " + str(arg))
|
||||||
|
try:
|
||||||
|
subprocess.check_call(arg)
|
||||||
|
except subprocess.CalledProcessError:
|
||||||
|
raise HwsimSkip("macsec supported (wpa_supplicant CONFIG_MACSEC, CONFIG_MACSEC_LINUX; kernel CONFIG_MACSEC)")
|
||||||
|
|
||||||
|
if os.path.exists("wpa_supplicant-macsec2"):
|
||||||
|
logger.info("Use alternative wpa_supplicant binary for one of the macsec devices")
|
||||||
|
prg = "wpa_supplicant-macsec2"
|
||||||
|
|
||||||
|
arg = [ "ip", "netns", "exec", "ns1",
|
||||||
|
prg, '-BdddtKW', '-P', pidfile + '1', '-f', logfile1,
|
||||||
|
'-g', '/tmp/wpas-veth1',
|
||||||
|
'-Dmacsec_linux', '-c', conffile + '1', '-i', "veth1" ]
|
||||||
|
logger.info("Start wpa_supplicant: " + str(arg))
|
||||||
|
subprocess.check_call(arg)
|
||||||
|
|
||||||
|
wpas0 = WpaSupplicant('veth0', '/tmp/wpas-veth0')
|
||||||
|
wpas1 = WpaSupplicant('veth1', '/tmp/wpas-veth1')
|
||||||
|
|
||||||
|
log_ip_macsec_ns()
|
||||||
|
log_ip_link_ns()
|
||||||
|
|
||||||
|
logger.info("wpas0 STATUS:\n" + wpas0.request("STATUS"))
|
||||||
|
logger.info("wpas1 STATUS:\n" + wpas1.request("STATUS"))
|
||||||
|
logger.info("wpas0 STATUS-DRIVER:\n" + wpas0.request("STATUS-DRIVER"))
|
||||||
|
logger.info("wpas1 STATUS-DRIVER:\n" + wpas1.request("STATUS-DRIVER"))
|
||||||
|
macsec_ifname0 = wpas0.get_driver_status_field("parent_ifname")
|
||||||
|
macsec_ifname1 = wpas1.get_driver_status_field("parent_ifname")
|
||||||
|
|
||||||
|
for i in range(10):
|
||||||
|
key_tx0 = int(wpas0.get_status_field("Number of Keys Distributed"))
|
||||||
|
key_rx0 = int(wpas0.get_status_field("Number of Keys Received"))
|
||||||
|
key_tx1 = int(wpas1.get_status_field("Number of Keys Distributed"))
|
||||||
|
key_rx1 = int(wpas1.get_status_field("Number of Keys Received"))
|
||||||
|
if key_rx0 > 0 and key_tx1 > 0:
|
||||||
|
break
|
||||||
|
time.sleep(1)
|
||||||
|
|
||||||
|
cmd[2] = subprocess.Popen(['ip', 'netns', 'exec', 'ns0',
|
||||||
|
'tcpdump', '-p', '-U', '-i', macsec_ifname0,
|
||||||
|
'-w', cap_macsec0, '-s', '2000',
|
||||||
|
'--immediate-mode'],
|
||||||
|
stderr=open('/dev/null', 'w'))
|
||||||
|
cmd[3] = subprocess.Popen(['ip', 'netns', 'exec', 'ns0',
|
||||||
|
'tcpdump', '-p', '-U', '-i', macsec_ifname1,
|
||||||
|
'-w', cap_macsec1, '-s', '2000',
|
||||||
|
'--immediate-mode'],
|
||||||
|
stderr=open('/dev/null', 'w'))
|
||||||
|
time.sleep(0.5)
|
||||||
|
|
||||||
|
logger.info("wpas0 STATUS:\n" + wpas0.request("STATUS"))
|
||||||
|
logger.info("wpas1 STATUS:\n" + wpas1.request("STATUS"))
|
||||||
|
log_ip_macsec_ns()
|
||||||
|
hwsim_utils.test_connectivity(wpas0, wpas1,
|
||||||
|
ifname1=macsec_ifname0,
|
||||||
|
ifname2=macsec_ifname1,
|
||||||
|
send_len=1400)
|
||||||
|
log_ip_macsec_ns()
|
||||||
|
|
||||||
|
subprocess.check_call(['ip', 'netns', 'exec', 'ns0',
|
||||||
|
'ip', 'addr', 'add', '192.168.248.17/30',
|
||||||
|
'dev', macsec_ifname0])
|
||||||
|
subprocess.check_call(['ip', 'netns', 'exec', 'ns1',
|
||||||
|
'ip', 'addr', 'add', '192.168.248.18/30',
|
||||||
|
'dev', macsec_ifname1])
|
||||||
|
c = subprocess.Popen(['ip', 'netns', 'exec', 'ns0',
|
||||||
|
'ping', '-c', '2', '192.168.248.18'],
|
||||||
|
stdout=subprocess.PIPE)
|
||||||
|
res = c.stdout.read()
|
||||||
|
c.stdout.close()
|
||||||
|
logger.info("ping:\n" + res)
|
||||||
|
if "2 packets transmitted, 2 received" not in res:
|
||||||
|
raise Exception("ping did not work")
|
||||||
|
|
||||||
|
wpas0.request("TERMINATE")
|
||||||
|
del wpas0
|
||||||
|
wpas1.request("TERMINATE")
|
||||||
|
del wpas1
|
||||||
|
|
||||||
|
time.sleep(1)
|
||||||
|
for i in range(len(cmd)):
|
||||||
|
cmd[i].terminate()
|
||||||
Loading…
Reference in a new issue