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-rw-r--r--test/test_ipsec_ah.py325
1 files changed, 325 insertions, 0 deletions
diff --git a/test/test_ipsec_ah.py b/test/test_ipsec_ah.py
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+++ b/test/test_ipsec_ah.py
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+import socket
+
+from scapy.layers.inet import IP, ICMP
+from scapy.layers.l2 import Ether
+from scapy.layers.ipsec import *
+
+from framework import VppTestCase
+from vpp_ip_route import VppIpRoute
+
+from util import ppp
+
+
+class TestIpsecAh(VppTestCase):
+ """
+ Basic test for IPSEC using AH transport and Tunnel mode
+
+ Below 4 cases are covered as part of this test
+ 1) ipsec ah v4 transport basic test - IPv4 Transport mode
+ scenario using HMAC-SHA1-96 intergrity algo
+ 2) ipsec ah v4 transport burst test
+ Above test for 257 pkts
+ 3) ipsec ah 4o4 tunnel basic test - IPv4 Tunnel mode
+ scenario using HMAC-SHA1-96 intergrity algo
+ 4) ipsec ah 4o4 tunnel burst test
+ Above test for 257 pkts
+
+ TRANSPORT MODE:
+
+ --- encrypt ---
+ |pg2| <-------> |VPP|
+ --- decrypt ---
+
+ TUNNEL MODE:
+
+ --- encrypt --- plain ---
+ |pg0| -------> |VPP| ------> |pg1|
+ --- --- ---
+
+ --- decrypt --- plain ---
+ |pg0| <------- |VPP| <------ |pg1|
+ --- --- ---
+
+ Note : IPv6 is not covered
+ """
+
+ remote_pg0_lb_addr = '1.1.1.1'
+ remote_pg1_lb_addr = '2.2.2.2'
+
+ @classmethod
+ def setUpClass(cls):
+ super(TestIpsecAh, cls).setUpClass()
+ try:
+ cls.create_pg_interfaces(range(3))
+ cls.interfaces = list(cls.pg_interfaces)
+ for i in cls.interfaces:
+ i.admin_up()
+ i.config_ip4()
+ i.resolve_arp()
+ cls.logger.info(cls.vapi.ppcli("show int addr"))
+ cls.configAhTra()
+ cls.logger.info(cls.vapi.ppcli("show ipsec"))
+ cls.configAhTun()
+ cls.logger.info(cls.vapi.ppcli("show ipsec"))
+ except Exception:
+ super(TestIpsecAh, cls).tearDownClass()
+ raise
+
+ @classmethod
+ def configAhTun(cls):
+ try:
+ spd_id = 1
+ remote_sa_id = 10
+ local_sa_id = 20
+ remote_tun_spi = 1001
+ local_tun_spi = 1000
+ src4 = socket.inet_pton(socket.AF_INET, cls.remote_pg0_lb_addr)
+ cls.vapi.ip_add_del_route(src4, 32, cls.pg0.remote_ip4n)
+ dst4 = socket.inet_pton(socket.AF_INET, cls.remote_pg1_lb_addr)
+ cls.vapi.ip_add_del_route(dst4, 32, cls.pg1.remote_ip4n)
+ cls.vapi.ipsec_sad_add_del_entry(
+ remote_sa_id,
+ remote_tun_spi,
+ cls.pg0.local_ip4n,
+ cls.pg0.remote_ip4n,
+ integrity_key_length=20)
+ cls.vapi.ipsec_sad_add_del_entry(
+ local_sa_id,
+ local_tun_spi,
+ cls.pg0.remote_ip4n,
+ cls.pg0.local_ip4n,
+ integrity_key_length=20)
+ cls.vapi.ipsec_spd_add_del(spd_id)
+ cls.vapi.ipsec_interface_add_del_spd(spd_id, cls.pg0.sw_if_index)
+ l_startaddr = r_startaddr = socket.inet_pton(
+ socket.AF_INET, "0.0.0.0")
+ l_stopaddr = r_stopaddr = socket.inet_pton(
+ socket.AF_INET, "255.255.255.255")
+ cls.vapi.ipsec_spd_add_del_entry(
+ spd_id,
+ l_startaddr,
+ l_stopaddr,
+ r_startaddr,
+ r_stopaddr,
+ protocol=51)
+ cls.vapi.ipsec_spd_add_del_entry(
+ spd_id,
+ l_startaddr,
+ l_stopaddr,
+ r_startaddr,
+ r_stopaddr,
+ protocol=51,
+ is_outbound=0)
+ l_startaddr = l_stopaddr = socket.inet_pton(
+ socket.AF_INET, cls.remote_pg0_lb_addr)
+ r_startaddr = r_stopaddr = socket.inet_pton(
+ socket.AF_INET, cls.remote_pg1_lb_addr)
+ cls.vapi.ipsec_spd_add_del_entry(
+ spd_id,
+ l_startaddr,
+ l_stopaddr,
+ r_startaddr,
+ r_stopaddr,
+ priority=10,
+ policy=3,
+ is_outbound=0,
+ sa_id=local_sa_id)
+ cls.vapi.ipsec_spd_add_del_entry(
+ spd_id,
+ r_startaddr,
+ r_stopaddr,
+ l_startaddr,
+ l_stopaddr,
+ priority=10,
+ policy=3,
+ sa_id=remote_sa_id)
+ except Exception:
+ raise
+
+ @classmethod
+ def configAhTra(cls):
+ try:
+ spd_id = 2
+ remote_sa_id = 30
+ local_sa_id = 40
+ remote_tra_spi = 2001
+ local_tra_spi = 2000
+ cls.vapi.ipsec_sad_add_del_entry(
+ remote_sa_id,
+ remote_tra_spi,
+ integrity_key_length=20,
+ is_tunnel=0)
+ cls.vapi.ipsec_sad_add_del_entry(
+ local_sa_id,
+ local_tra_spi,
+ integrity_key_length=20,
+ is_tunnel=0)
+ cls.vapi.ipsec_spd_add_del(spd_id)
+ cls.vapi.ipsec_interface_add_del_spd(spd_id, cls.pg2.sw_if_index)
+ l_startaddr = r_startaddr = socket.inet_pton(
+ socket.AF_INET, "0.0.0.0")
+ l_stopaddr = r_stopaddr = socket.inet_pton(
+ socket.AF_INET, "255.255.255.255")
+ cls.vapi.ipsec_spd_add_del_entry(
+ spd_id,
+ l_startaddr,
+ l_stopaddr,
+ r_startaddr,
+ r_stopaddr,
+ protocol=51)
+ cls.vapi.ipsec_spd_add_del_entry(
+ spd_id,
+ l_startaddr,
+ l_stopaddr,
+ r_startaddr,
+ r_stopaddr,
+ protocol=51,
+ is_outbound=0)
+ l_startaddr = l_stopaddr = cls.pg2.local_ip4n
+ r_startaddr = r_stopaddr = cls.pg2.remote_ip4n
+ cls.vapi.ipsec_spd_add_del_entry(
+ spd_id,
+ l_startaddr,
+ l_stopaddr,
+ r_startaddr,
+ r_stopaddr,
+ priority=10,
+ policy=3,
+ is_outbound=0,
+ sa_id=local_sa_id)
+ cls.vapi.ipsec_spd_add_del_entry(
+ spd_id,
+ l_startaddr,
+ l_stopaddr,
+ r_startaddr,
+ r_stopaddr,
+ priority=10,
+ policy=3,
+ sa_id=remote_sa_id)
+ except Exception:
+ raise
+
+ def configScapySA(self, is_tun=False):
+ if is_tun:
+ self.remote_tun_sa = SecurityAssociation(
+ AH,
+ spi=0x000003e8,
+ auth_algo='HMAC-SHA1-96',
+ auth_key='C91KUR9GYMm5GfkEvNjX',
+ tunnel_header=IP(
+ src=self.pg0.remote_ip4,
+ dst=self.pg0.local_ip4))
+ self.local_tun_sa = SecurityAssociation(
+ AH,
+ spi=0x000003e9,
+ auth_algo='HMAC-SHA1-96',
+ auth_key='C91KUR9GYMm5GfkEvNjX',
+ tunnel_header=IP(
+ dst=self.pg0.remote_ip4,
+ src=self.pg0.local_ip4))
+ else:
+ self.remote_tra_sa = SecurityAssociation(
+ AH, spi=0x000007d0, auth_algo='HMAC-SHA1-96',
+ auth_key='C91KUR9GYMm5GfkEvNjX')
+ self.local_tra_sa = SecurityAssociation(
+ AH, spi=0x000007d1, auth_algo='HMAC-SHA1-96',
+ auth_key='C91KUR9GYMm5GfkEvNjX')
+
+ def tearDown(self):
+ super(TestIpsecAh, self).tearDown()
+ if not self.vpp_dead:
+ self.vapi.cli("show hardware")
+
+ def send_and_expect(self, input, pkts, output, count=1):
+ input.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ rx = output.get_capture(count)
+ return rx
+
+ def gen_encrypt_pkts(self, sa, sw_intf, src, dst, count=1):
+ return [Ether(src=sw_intf.remote_mac, dst=sw_intf.local_mac) /
+ sa.encrypt(IP(src=src, dst=dst) / ICMP() /
+ "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX")
+ ] * count
+
+ def gen_pkts(self, sw_intf, src, dst, count=1):
+ return [Ether(src=sw_intf.remote_mac, dst=sw_intf.local_mac) /
+ IP(src=src, dst=dst) / ICMP() /
+ "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
+ ] * count
+
+ def test_ipsec_ah_tra_basic(self, count=1):
+ """ ipsec ah v4 transport basic test """
+ try:
+ self.configScapySA()
+ send_pkts = self.gen_encrypt_pkts(
+ self.remote_tra_sa,
+ self.pg2,
+ src=self.pg2.remote_ip4,
+ dst=self.pg2.local_ip4,
+ count=count)
+ recv_pkts = self.send_and_expect(
+ self.pg2, send_pkts, self.pg2, count=count)
+ # ESP TRA VPP encryption/decryption verification
+ for Pkts in recv_pkts:
+ Pkts[AH].padding = Pkts[AH].icv[12:]
+ Pkts[AH].icv = Pkts[AH].icv[:12]
+ decrypt_pkt = self.local_tra_sa.decrypt(Pkts[IP])
+ finally:
+ self.logger.info(self.vapi.ppcli("show error"))
+ self.logger.info(self.vapi.ppcli("show ipsec"))
+
+ def test_ipsec_ah_tra_burst(self):
+ """ ipsec ah v4 transport burst test """
+ try:
+ self.test_ipsec_ah_tra_basic(count=257)
+ finally:
+ self.logger.info(self.vapi.ppcli("show error"))
+ self.logger.info(self.vapi.ppcli("show ipsec"))
+
+ def test_ipsec_ah_tun_basic(self, count=1):
+ """ ipsec ah 4o4 tunnel basic test """
+ try:
+ self.configScapySA(is_tun=True)
+ send_pkts = self.gen_encrypt_pkts(
+ self.remote_tun_sa,
+ self.pg0,
+ src=self.remote_pg0_lb_addr,
+ dst=self.remote_pg1_lb_addr,
+ count=count)
+ recv_pkts = self.send_and_expect(
+ self.pg0, send_pkts, self.pg1, count=count)
+ # ESP TUN VPP decryption verification
+ for recv_pkt in recv_pkts:
+ self.assert_equal(recv_pkt[IP].src, self.remote_pg0_lb_addr)
+ self.assert_equal(recv_pkt[IP].dst, self.remote_pg1_lb_addr)
+ send_pkts = self.gen_pkts(
+ self.pg1,
+ src=self.remote_pg1_lb_addr,
+ dst=self.remote_pg0_lb_addr,
+ count=count)
+ recv_pkts = self.send_and_expect(
+ self.pg1, send_pkts, self.pg0, count=count)
+ # ESP TUN VPP encryption verification
+ for recv_pkt in recv_pkts:
+ recv_pkt[IP] = recv_pkt[IP] / IP(recv_pkt[AH].icv[12:])
+ recv_pkt[AH].icv = recv_pkt[AH].icv[:12]
+ decrypt_pkt = self.local_tun_sa.decrypt(recv_pkt[IP])
+ self.assert_equal(decrypt_pkt.src, self.remote_pg1_lb_addr)
+ self.assert_equal(decrypt_pkt.dst, self.remote_pg0_lb_addr)
+ finally:
+ self.logger.info(self.vapi.ppcli("show error"))
+ self.logger.info(self.vapi.ppcli("show ipsec"))
+
+ def test_ipsec_ah_tun_burst(self):
+ """ ipsec ah 4o4 tunnel burst test """
+ try:
+ self.test_ipsec_ah_tun_basic(count=257)
+ finally:
+ self.logger.info(self.vapi.ppcli("show error"))
+ self.logger.info(self.vapi.ppcli("show ipsec"))
+
+
+if __name__ == '__main__':
+ unittest.main(testRunner=VppTestRunner)