diff options
Diffstat (limited to 'test/test_ipip.py')
| -rw-r--r-- | test/test_ipip.py | 225 |
1 files changed, 206 insertions, 19 deletions
diff --git a/test/test_ipip.py b/test/test_ipip.py index efaaf52539e..b7a0179957b 100644 --- a/test/test_ipip.py +++ b/test/test_ipip.py @@ -2,8 +2,8 @@ """IP{4,6} over IP{v,6} tunnel functional tests""" import unittest -from scapy.layers.inet6 import IPv6, Ether, IP, UDP -from scapy.all import fragment, RandShort +from scapy.layers.inet6 import IPv6, Ether, IP, UDP, IPv6ExtHdrFragment +from scapy.all import fragment, fragment6, RandShort, defragment6 from framework import VppTestCase, VppTestRunner from vpp_ip import DpoProto from vpp_ip_route import VppIpRoute, VppRoutePath, VppIpTable @@ -17,6 +17,7 @@ IPIP tests. """ +# Replace by deframent from scapy. def reassemble(listoffragments): buffer = StringIO.StringIO() first = listoffragments[0] @@ -61,7 +62,7 @@ class TestIPIP(VppTestCase): def validate(self, rx, expected): self.assertEqual(rx, expected.__class__(str(expected))) - def generate_frags(self, payload_length, fragment_size): + def generate_ip4_frags(self, payload_length, fragment_size): p_ether = Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) p_payload = UDP(sport=1234, dport=1234) / self.payload(payload_length) p_ip4 = IP(src="1.2.3.4", dst=self.pg0.remote_ip4) @@ -171,7 +172,7 @@ class TestIPIP(VppTestCase): enable_ip4=1) # Send lots of fragments, verify reassembled packet - frags, p4_reply = self.generate_frags(3131, 1400) + frags, p4_reply = self.generate_ip4_frags(3131, 1400) f = [] for i in range(0, 1000): f.extend(frags) @@ -190,7 +191,7 @@ class TestIPIP(VppTestCase): f = [] r = [] for i in range(1, 90): - frags, p4_reply = self.generate_frags(i * 100, 1000) + frags, p4_reply = self.generate_ip4_frags(i * 100, 1000) f.extend(frags) r.extend(p4_reply) self.pg_enable_capture() @@ -208,7 +209,7 @@ class TestIPIP(VppTestCase): # to reassemble and then refragment # self.vapi.sw_interface_set_mtu(self.pg0.sw_if_index, [576, 0, 0, 0]) - frags, p4_reply = self.generate_frags(3123, 1200) + frags, p4_reply = self.generate_ip4_frags(3123, 1200) self.pg_enable_capture() self.pg1.add_stream(frags) self.pg_start() @@ -219,7 +220,7 @@ class TestIPIP(VppTestCase): self.validate(reass_pkt, p4_reply) self.vapi.sw_interface_set_mtu(self.pg0.sw_if_index, [1600, 0, 0, 0]) - frags, p4_reply = self.generate_frags(3123, 1200) + frags, p4_reply = self.generate_ip4_frags(3123, 1200) self.pg_enable_capture() self.pg1.add_stream(frags) self.pg_start() @@ -229,20 +230,66 @@ class TestIPIP(VppTestCase): p4_reply.id = 512 self.validate(reass_pkt, p4_reply) - def test_ipip6(self): - """ ip{v4,v6} over ip6 test """ - p_ether = Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) - p_ip6 = IPv6(src="1::1", dst="DEAD::1", tc=42, nh='UDP') - p_ip4 = IP(src="1.2.3.4", dst="130.67.0.1", tos=42) - p_payload = UDP(sport=1234, dport=1234) + def test_ipip_create(self): + """ ipip create / delete interface test """ + rv = self.vapi.ipip_add_tunnel( + src_address=inet_pton(AF_INET, '1.2.3.4'), + dst_address=inet_pton(AF_INET, '2.3.4.5'), is_ipv6=0) + sw_if_index = rv.sw_if_index + self.vapi.ipip_del_tunnel(sw_if_index) + + def test_ipip_vrf_create(self): + """ ipip create / delete interface VRF test """ + + t = VppIpTable(self, 20) + t.add_vpp_config() + rv = self.vapi.ipip_add_tunnel( + src_address=inet_pton(AF_INET, '1.2.3.4'), + dst_address=inet_pton(AF_INET, '2.3.4.5'), is_ipv6=0, + table_id=20) + sw_if_index = rv.sw_if_index + self.vapi.ipip_del_tunnel(sw_if_index) + + def payload(self, len): + return 'x' * len + +class TestIPIP6(VppTestCase): + """ IPIP6 Test Case """ + + @classmethod + def setUpClass(cls): + super(TestIPIP6, cls).setUpClass() + cls.create_pg_interfaces(range(2)) + cls.interfaces = list(cls.pg_interfaces) + + def setUp(self): + for i in self.interfaces: + i.admin_up() + i.config_ip4() + i.config_ip6() + i.disable_ipv6_ra() + i.resolve_arp() + i.resolve_ndp() + self.setup_tunnel() + + def tearDown(self): + if not self.vpp_dead: + self.destroy_tunnel() + for i in self.pg_interfaces: + i.unconfig_ip4() + i.unconfig_ip6() + i.admin_down() + super(TestIPIP6, self).tearDown() + + def setup_tunnel(self): # IPv6 transport rv = self.vapi.ipip_add_tunnel( src_address=self.pg0.local_ip6n, dst_address=self.pg1.remote_ip6n, tc_tos=255) sw_if_index = rv.sw_if_index - + self.tunnel_if_index = sw_if_index self.vapi.sw_interface_set_flags(sw_if_index, 1) self.vapi.sw_interface_set_unnumbered( ip_sw_if_index=self.pg0.sw_if_index, sw_if_index=sw_if_index) @@ -262,12 +309,57 @@ class TestIPIP(VppTestCase): proto=DpoProto.DPO_PROTO_IP6)], is_ip6=1) ip6_via_tunnel.add_vpp_config() - # Encapsulation + self.tunnel_ip6_via_tunnel = ip6_via_tunnel + self.tunnel_ip4_via_tunnel = ip4_via_tunnel + + def destroy_tunnel(self): + # IPv6 transport + self.tunnel_ip4_via_tunnel.remove_vpp_config() + self.tunnel_ip6_via_tunnel.remove_vpp_config() + + rv = self.vapi.ipip_del_tunnel(sw_if_index=self.tunnel_if_index) + + def validate(self, rx, expected): + self.assertEqual(rx, expected.__class__(str(expected))) + + def generate_ip6_frags(self, payload_length, fragment_size): + p_ether = Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) + p_payload = UDP(sport=1234, dport=1234) / self.payload(payload_length) + p_ip6 = IPv6(src="1::1", dst=self.pg0.remote_ip6) + outer_ip6 = (p_ether / IPv6(src=self.pg1.remote_ip6, + dst=self.pg0.local_ip6) / + IPv6ExtHdrFragment() / p_ip6 / p_payload) + frags = fragment6(outer_ip6, fragment_size) + p6_reply = (p_ip6 / p_payload) + p6_reply.hlim -= 1 + return frags, p6_reply + + def generate_ip6_hairpin_frags(self, payload_length, fragment_size): + p_ether = Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) + p_payload = UDP(sport=1234, dport=1234) / self.payload(payload_length) + p_ip6 = IPv6(src="1::1", dst="dead::1") + outer_ip6 = (p_ether / IPv6(src=self.pg1.remote_ip6, + dst=self.pg0.local_ip6) / + IPv6ExtHdrFragment() / p_ip6 / p_payload) + frags = fragment6(outer_ip6, fragment_size) + p_ip6.hlim -= 1 + p6_reply = (IPv6(src=self.pg0.local_ip6, dst=self.pg1.remote_ip6, + hlim=63) / p_ip6 / p_payload) + + return frags, p6_reply + + def test_encap(self): + """ ip{v4,v6} over ip6 test encap """ + p_ether = Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) + p_ip6 = IPv6(src="1::1", dst="DEAD::1", tc=42, nh='UDP') + p_ip4 = IP(src="1.2.3.4", dst="130.67.0.1", tos=42) + p_payload = UDP(sport=1234, dport=1234) + # Encapsulation # IPv6 in to IPv6 tunnel p6 = (p_ether / p_ip6 / p_payload) p6_reply = (IPv6(src=self.pg0.local_ip6, dst=self.pg1.remote_ip6, - hlim=63, tc=42) / + hlim=64, tc=42) / p_ip6 / p_payload) p6_reply[1].hlim -= 1 rx = self.send_and_expect(self.pg0, p6*11, self.pg1) @@ -277,19 +369,24 @@ class TestIPIP(VppTestCase): # IPv4 in to IPv6 tunnel p4 = (p_ether / p_ip4 / p_payload) p4_reply = (IPv6(src=self.pg0.local_ip6, - dst=self.pg1.remote_ip6, hlim=63, tc=42) / + dst=self.pg1.remote_ip6, hlim=64, tc=42) / p_ip4 / p_payload) p4_reply[1].ttl -= 1 rx = self.send_and_expect(self.pg0, p4*11, self.pg1) for p in rx: self.validate(p[1], p4_reply) - # Decapsulation + def test_decap(self): + """ ip{v4,v6} over ip6 test decap """ p_ether = Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) + p_ip6 = IPv6(src="1::1", dst="DEAD::1", tc=42, nh='UDP') + p_ip4 = IP(src="1.2.3.4", dst=self.pg0.remote_ip4) + p_payload = UDP(sport=1234, dport=1234) + # Decapsulation # IPv6 tunnel to IPv4 - p_ip4 = IP(src="1.2.3.4", dst=self.pg0.remote_ip4) + p4 = (p_ether / IPv6(src=self.pg1.remote_ip6, dst=self.pg0.local_ip6) / p_ip4 / p_payload) p4_reply = (p_ip4 / p_payload) @@ -308,6 +405,96 @@ class TestIPIP(VppTestCase): for p in rx: self.validate(p[1], p6_reply) + def test_frag(self): + """ ip{v4,v6} over ip6 test frag """ + + p_ether = Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) + p_ip6 = IPv6(src="1::1", dst="DEAD::1", tc=42, nh='UDP') + p_ip4 = IP(src="1.2.3.4", dst=self.pg0.remote_ip4) + p_payload = UDP(sport=1234, dport=1234) + + # + # Fragmentation / Reassembly and Re-fragmentation + # + rv = self.vapi.ip_reassembly_enable_disable( + sw_if_index=self.pg1.sw_if_index, + enable_ip6=1) + + # Send lots of fragments, verify reassembled packet + before_cnt = self.statistics.get_counter( + '/err/ipip6-input/packets decapsulated') + frags, p6_reply = self.generate_ip6_frags(3131, 1400) + f = [] + for i in range(0, 1000): + f.extend(frags) + self.pg1.add_stream(f) + self.pg_enable_capture() + self.pg_start() + rx = self.pg0.get_capture(1000) + + for p in rx: + self.validate(p[1], p6_reply) + + cnt = self.statistics.get_counter( + '/err/ipip6-input/packets decapsulated') + self.assertEqual(cnt, before_cnt + 1000) + + f = [] + r = [] + # TODO: Check out why reassembly of atomic fragments don't work + for i in range(10, 90): + frags, p6_reply = self.generate_ip6_frags(i * 100, 1000) + f.extend(frags) + r.extend(p6_reply) + self.pg_enable_capture() + self.pg1.add_stream(f) + self.pg_start() + rx = self.pg0.get_capture(80) + i = 0 + for p in rx: + self.validate(p[1], r[i]) + i += 1 + + # Simple fragmentation + p_ether = Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) + self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [1280, 0, 0, 0]) + + # IPv6 in to IPv6 tunnel + p_payload = UDP(sport=1234, dport=1234) / self.payload(1300) + + p6 = (p_ether / p_ip6 / p_payload) + p6_reply = (IPv6(src=self.pg0.local_ip6, dst=self.pg1.remote_ip6, + hlim=63, tc=42) / + p_ip6 / p_payload) + p6_reply[1].hlim -= 1 + self.pg_enable_capture() + self.pg0.add_stream(p6) + self.pg_start() + rx = self.pg1.get_capture(2) + + # Scapy defragment doesn't deal well with multiple layers + # of samy type / Ethernet header first + f = [p[1] for p in rx] + reass_pkt = defragment6(f) + self.validate(reass_pkt, p6_reply) + + # Now try with re-fragmentation + # + # Send large fragments to tunnel head-end, for the tunnel head end + # to reassemble and then refragment out the tunnel again. + # Hair-pinning + # + self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [1280, 0, 0, 0]) + frags, p6_reply = self.generate_ip6_hairpin_frags(8000, 1200) + self.pg_enable_capture() + self.pg1.add_stream(frags) + self.pg_start() + rx = self.pg1.get_capture(7) + f = [p[1] for p in rx] + reass_pkt = defragment6(f) + p6_reply.id = 256 + self.validate(reass_pkt, p6_reply) + def test_ipip_create(self): """ ipip create / delete interface test """ rv = self.vapi.ipip_add_tunnel( |