Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 1 | #!/usr/bin/env python |
| 2 | |
| 3 | import socket |
| 4 | import unittest |
Matus Fabian | eea28d7 | 2017-01-13 04:15:54 -0800 | [diff] [blame] | 5 | import struct |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 6 | |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 7 | from framework import VppTestCase, VppTestRunner, running_extended_tests |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 8 | from scapy.layers.inet import IP, TCP, UDP, ICMP |
Juraj Sloboda | b33f413 | 2017-02-08 23:54:21 -0800 | [diff] [blame] | 9 | from scapy.layers.inet import IPerror, TCPerror, UDPerror, ICMPerror |
Matus Fabian | 06596c5 | 2017-06-06 04:53:28 -0700 | [diff] [blame^] | 10 | from scapy.layers.inet6 import IPv6, ICMPv6EchoRequest, ICMPv6EchoReply |
Matus Fabian | e1ae29a | 2017-01-27 00:47:58 -0800 | [diff] [blame] | 11 | from scapy.layers.l2 import Ether, ARP |
Matus Fabian | eea28d7 | 2017-01-13 04:15:54 -0800 | [diff] [blame] | 12 | from scapy.data import IP_PROTOS |
Matus Fabian | 6631e9c | 2017-05-24 01:52:20 -0700 | [diff] [blame] | 13 | from scapy.packet import bind_layers |
Klement Sekera | 9225dee | 2016-12-12 08:36:58 +0100 | [diff] [blame] | 14 | from util import ppp |
Matus Fabian | eea28d7 | 2017-01-13 04:15:54 -0800 | [diff] [blame] | 15 | from ipfix import IPFIX, Set, Template, Data, IPFIXDecoder |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 16 | from time import sleep |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 17 | |
| 18 | |
Martin Gálik | d7f75cd | 2017-03-27 06:02:47 -0700 | [diff] [blame] | 19 | class MethodHolder(VppTestCase): |
| 20 | """ SNAT create capture and verify method holder """ |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 21 | |
| 22 | @classmethod |
| 23 | def setUpClass(cls): |
Martin Gálik | d7f75cd | 2017-03-27 06:02:47 -0700 | [diff] [blame] | 24 | super(MethodHolder, cls).setUpClass() |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 25 | |
Martin Gálik | d7f75cd | 2017-03-27 06:02:47 -0700 | [diff] [blame] | 26 | def tearDown(self): |
| 27 | super(MethodHolder, self).tearDown() |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 28 | |
Juraj Sloboda | b33f413 | 2017-02-08 23:54:21 -0800 | [diff] [blame] | 29 | def create_stream_in(self, in_if, out_if, ttl=64): |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 30 | """ |
| 31 | Create packet stream for inside network |
| 32 | |
| 33 | :param in_if: Inside interface |
| 34 | :param out_if: Outside interface |
Juraj Sloboda | b33f413 | 2017-02-08 23:54:21 -0800 | [diff] [blame] | 35 | :param ttl: TTL of generated packets |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 36 | """ |
| 37 | pkts = [] |
| 38 | # TCP |
| 39 | p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) / |
Juraj Sloboda | b33f413 | 2017-02-08 23:54:21 -0800 | [diff] [blame] | 40 | IP(src=in_if.remote_ip4, dst=out_if.remote_ip4, ttl=ttl) / |
Matus Fabian | 06596c5 | 2017-06-06 04:53:28 -0700 | [diff] [blame^] | 41 | TCP(sport=self.tcp_port_in, dport=20)) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 42 | pkts.append(p) |
| 43 | |
| 44 | # UDP |
| 45 | p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) / |
Juraj Sloboda | b33f413 | 2017-02-08 23:54:21 -0800 | [diff] [blame] | 46 | IP(src=in_if.remote_ip4, dst=out_if.remote_ip4, ttl=ttl) / |
Matus Fabian | 06596c5 | 2017-06-06 04:53:28 -0700 | [diff] [blame^] | 47 | UDP(sport=self.udp_port_in, dport=20)) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 48 | pkts.append(p) |
| 49 | |
| 50 | # ICMP |
| 51 | p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) / |
Juraj Sloboda | b33f413 | 2017-02-08 23:54:21 -0800 | [diff] [blame] | 52 | IP(src=in_if.remote_ip4, dst=out_if.remote_ip4, ttl=ttl) / |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 53 | ICMP(id=self.icmp_id_in, type='echo-request')) |
| 54 | pkts.append(p) |
| 55 | |
| 56 | return pkts |
| 57 | |
Matus Fabian | 06596c5 | 2017-06-06 04:53:28 -0700 | [diff] [blame^] | 58 | def create_stream_in_ip6(self, in_if, out_if, hlim=64): |
| 59 | """ |
| 60 | Create IPv6 packet stream for inside network |
| 61 | |
| 62 | :param in_if: Inside interface |
| 63 | :param out_if: Outside interface |
| 64 | :param ttl: Hop Limit of generated packets |
| 65 | """ |
| 66 | pkts = [] |
| 67 | dst = ''.join(['64:ff9b::', out_if.remote_ip4]) |
| 68 | # TCP |
| 69 | p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) / |
| 70 | IPv6(src=in_if.remote_ip6, dst=dst, hlim=hlim) / |
| 71 | TCP(sport=self.tcp_port_in, dport=20)) |
| 72 | pkts.append(p) |
| 73 | |
| 74 | # UDP |
| 75 | p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) / |
| 76 | IPv6(src=in_if.remote_ip6, dst=dst, hlim=hlim) / |
| 77 | UDP(sport=self.udp_port_in, dport=20)) |
| 78 | pkts.append(p) |
| 79 | |
| 80 | # ICMP |
| 81 | p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) / |
| 82 | IPv6(src=in_if.remote_ip6, dst=dst, hlim=hlim) / |
| 83 | ICMPv6EchoRequest(id=self.icmp_id_in)) |
| 84 | pkts.append(p) |
| 85 | |
| 86 | return pkts |
| 87 | |
Juraj Sloboda | b33f413 | 2017-02-08 23:54:21 -0800 | [diff] [blame] | 88 | def create_stream_out(self, out_if, dst_ip=None, ttl=64): |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 89 | """ |
| 90 | Create packet stream for outside network |
| 91 | |
| 92 | :param out_if: Outside interface |
| 93 | :param dst_ip: Destination IP address (Default use global SNAT address) |
Juraj Sloboda | b33f413 | 2017-02-08 23:54:21 -0800 | [diff] [blame] | 94 | :param ttl: TTL of generated packets |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 95 | """ |
| 96 | if dst_ip is None: |
Klement Sekera | 9225dee | 2016-12-12 08:36:58 +0100 | [diff] [blame] | 97 | dst_ip = self.snat_addr |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 98 | pkts = [] |
| 99 | # TCP |
| 100 | p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) / |
Juraj Sloboda | b33f413 | 2017-02-08 23:54:21 -0800 | [diff] [blame] | 101 | IP(src=out_if.remote_ip4, dst=dst_ip, ttl=ttl) / |
Matus Fabian | 06596c5 | 2017-06-06 04:53:28 -0700 | [diff] [blame^] | 102 | TCP(dport=self.tcp_port_out, sport=20)) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 103 | pkts.append(p) |
| 104 | |
| 105 | # UDP |
| 106 | p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) / |
Juraj Sloboda | b33f413 | 2017-02-08 23:54:21 -0800 | [diff] [blame] | 107 | IP(src=out_if.remote_ip4, dst=dst_ip, ttl=ttl) / |
Matus Fabian | 06596c5 | 2017-06-06 04:53:28 -0700 | [diff] [blame^] | 108 | UDP(dport=self.udp_port_out, sport=20)) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 109 | pkts.append(p) |
| 110 | |
| 111 | # ICMP |
| 112 | p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) / |
Juraj Sloboda | b33f413 | 2017-02-08 23:54:21 -0800 | [diff] [blame] | 113 | IP(src=out_if.remote_ip4, dst=dst_ip, ttl=ttl) / |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 114 | ICMP(id=self.icmp_id_out, type='echo-reply')) |
| 115 | pkts.append(p) |
| 116 | |
| 117 | return pkts |
| 118 | |
| 119 | def verify_capture_out(self, capture, nat_ip=None, same_port=False, |
Matus Fabian | 06596c5 | 2017-06-06 04:53:28 -0700 | [diff] [blame^] | 120 | packet_num=3, dst_ip=None): |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 121 | """ |
| 122 | Verify captured packets on outside network |
| 123 | |
| 124 | :param capture: Captured packets |
| 125 | :param nat_ip: Translated IP address (Default use global SNAT address) |
| 126 | :param same_port: Sorce port number is not translated (Default False) |
| 127 | :param packet_num: Expected number of packets (Default 3) |
Matus Fabian | 06596c5 | 2017-06-06 04:53:28 -0700 | [diff] [blame^] | 128 | :param dst_ip: Destination IP address (Default do not verify) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 129 | """ |
| 130 | if nat_ip is None: |
| 131 | nat_ip = self.snat_addr |
| 132 | self.assertEqual(packet_num, len(capture)) |
| 133 | for packet in capture: |
| 134 | try: |
| 135 | self.assertEqual(packet[IP].src, nat_ip) |
Matus Fabian | 06596c5 | 2017-06-06 04:53:28 -0700 | [diff] [blame^] | 136 | if dst_ip is not None: |
| 137 | self.assertEqual(packet[IP].dst, dst_ip) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 138 | if packet.haslayer(TCP): |
| 139 | if same_port: |
| 140 | self.assertEqual(packet[TCP].sport, self.tcp_port_in) |
| 141 | else: |
Klement Sekera | da505f6 | 2017-01-04 12:58:53 +0100 | [diff] [blame] | 142 | self.assertNotEqual( |
| 143 | packet[TCP].sport, self.tcp_port_in) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 144 | self.tcp_port_out = packet[TCP].sport |
| 145 | elif packet.haslayer(UDP): |
| 146 | if same_port: |
| 147 | self.assertEqual(packet[UDP].sport, self.udp_port_in) |
| 148 | else: |
Klement Sekera | da505f6 | 2017-01-04 12:58:53 +0100 | [diff] [blame] | 149 | self.assertNotEqual( |
| 150 | packet[UDP].sport, self.udp_port_in) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 151 | self.udp_port_out = packet[UDP].sport |
| 152 | else: |
| 153 | if same_port: |
| 154 | self.assertEqual(packet[ICMP].id, self.icmp_id_in) |
| 155 | else: |
| 156 | self.assertNotEqual(packet[ICMP].id, self.icmp_id_in) |
| 157 | self.icmp_id_out = packet[ICMP].id |
| 158 | except: |
Klement Sekera | 9225dee | 2016-12-12 08:36:58 +0100 | [diff] [blame] | 159 | self.logger.error(ppp("Unexpected or invalid packet " |
| 160 | "(outside network):", packet)) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 161 | raise |
| 162 | |
| 163 | def verify_capture_in(self, capture, in_if, packet_num=3): |
| 164 | """ |
| 165 | Verify captured packets on inside network |
| 166 | |
| 167 | :param capture: Captured packets |
| 168 | :param in_if: Inside interface |
| 169 | :param packet_num: Expected number of packets (Default 3) |
| 170 | """ |
| 171 | self.assertEqual(packet_num, len(capture)) |
| 172 | for packet in capture: |
| 173 | try: |
| 174 | self.assertEqual(packet[IP].dst, in_if.remote_ip4) |
| 175 | if packet.haslayer(TCP): |
| 176 | self.assertEqual(packet[TCP].dport, self.tcp_port_in) |
| 177 | elif packet.haslayer(UDP): |
| 178 | self.assertEqual(packet[UDP].dport, self.udp_port_in) |
| 179 | else: |
| 180 | self.assertEqual(packet[ICMP].id, self.icmp_id_in) |
| 181 | except: |
Klement Sekera | 9225dee | 2016-12-12 08:36:58 +0100 | [diff] [blame] | 182 | self.logger.error(ppp("Unexpected or invalid packet " |
| 183 | "(inside network):", packet)) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 184 | raise |
| 185 | |
Matus Fabian | 06596c5 | 2017-06-06 04:53:28 -0700 | [diff] [blame^] | 186 | def verify_capture_in_ip6(self, capture, src_ip, dst_ip, packet_num=3): |
| 187 | """ |
| 188 | Verify captured IPv6 packets on inside network |
| 189 | |
| 190 | :param capture: Captured packets |
| 191 | :param src_ip: Source IP |
| 192 | :param dst_ip: Destination IP address |
| 193 | :param packet_num: Expected number of packets (Default 3) |
| 194 | """ |
| 195 | self.assertEqual(packet_num, len(capture)) |
| 196 | for packet in capture: |
| 197 | try: |
| 198 | self.assertEqual(packet[IPv6].src, src_ip) |
| 199 | self.assertEqual(packet[IPv6].dst, dst_ip) |
| 200 | if packet.haslayer(TCP): |
| 201 | self.assertEqual(packet[TCP].dport, self.tcp_port_in) |
| 202 | elif packet.haslayer(UDP): |
| 203 | self.assertEqual(packet[UDP].dport, self.udp_port_in) |
| 204 | else: |
| 205 | self.assertEqual(packet[ICMPv6EchoReply].id, |
| 206 | self.icmp_id_in) |
| 207 | except: |
| 208 | self.logger.error(ppp("Unexpected or invalid packet " |
| 209 | "(inside network):", packet)) |
| 210 | raise |
| 211 | |
Matus Fabian | 675a69c | 2017-01-18 01:46:01 -0800 | [diff] [blame] | 212 | def verify_capture_no_translation(self, capture, ingress_if, egress_if): |
| 213 | """ |
| 214 | Verify captured packet that don't have to be translated |
| 215 | |
| 216 | :param capture: Captured packets |
| 217 | :param ingress_if: Ingress interface |
| 218 | :param egress_if: Egress interface |
| 219 | """ |
| 220 | for packet in capture: |
| 221 | try: |
| 222 | self.assertEqual(packet[IP].src, ingress_if.remote_ip4) |
| 223 | self.assertEqual(packet[IP].dst, egress_if.remote_ip4) |
| 224 | if packet.haslayer(TCP): |
| 225 | self.assertEqual(packet[TCP].sport, self.tcp_port_in) |
| 226 | elif packet.haslayer(UDP): |
| 227 | self.assertEqual(packet[UDP].sport, self.udp_port_in) |
| 228 | else: |
| 229 | self.assertEqual(packet[ICMP].id, self.icmp_id_in) |
| 230 | except: |
| 231 | self.logger.error(ppp("Unexpected or invalid packet " |
| 232 | "(inside network):", packet)) |
| 233 | raise |
| 234 | |
Juraj Sloboda | b33f413 | 2017-02-08 23:54:21 -0800 | [diff] [blame] | 235 | def verify_capture_out_with_icmp_errors(self, capture, src_ip=None, |
| 236 | packet_num=3, icmp_type=11): |
| 237 | """ |
| 238 | Verify captured packets with ICMP errors on outside network |
| 239 | |
| 240 | :param capture: Captured packets |
| 241 | :param src_ip: Translated IP address or IP address of VPP |
| 242 | (Default use global SNAT address) |
| 243 | :param packet_num: Expected number of packets (Default 3) |
| 244 | :param icmp_type: Type of error ICMP packet |
| 245 | we are expecting (Default 11) |
| 246 | """ |
| 247 | if src_ip is None: |
| 248 | src_ip = self.snat_addr |
| 249 | self.assertEqual(packet_num, len(capture)) |
| 250 | for packet in capture: |
| 251 | try: |
| 252 | self.assertEqual(packet[IP].src, src_ip) |
| 253 | self.assertTrue(packet.haslayer(ICMP)) |
| 254 | icmp = packet[ICMP] |
| 255 | self.assertEqual(icmp.type, icmp_type) |
| 256 | self.assertTrue(icmp.haslayer(IPerror)) |
| 257 | inner_ip = icmp[IPerror] |
| 258 | if inner_ip.haslayer(TCPerror): |
| 259 | self.assertEqual(inner_ip[TCPerror].dport, |
| 260 | self.tcp_port_out) |
| 261 | elif inner_ip.haslayer(UDPerror): |
| 262 | self.assertEqual(inner_ip[UDPerror].dport, |
| 263 | self.udp_port_out) |
| 264 | else: |
| 265 | self.assertEqual(inner_ip[ICMPerror].id, self.icmp_id_out) |
| 266 | except: |
| 267 | self.logger.error(ppp("Unexpected or invalid packet " |
| 268 | "(outside network):", packet)) |
| 269 | raise |
| 270 | |
| 271 | def verify_capture_in_with_icmp_errors(self, capture, in_if, packet_num=3, |
| 272 | icmp_type=11): |
| 273 | """ |
| 274 | Verify captured packets with ICMP errors on inside network |
| 275 | |
| 276 | :param capture: Captured packets |
| 277 | :param in_if: Inside interface |
| 278 | :param packet_num: Expected number of packets (Default 3) |
| 279 | :param icmp_type: Type of error ICMP packet |
| 280 | we are expecting (Default 11) |
| 281 | """ |
| 282 | self.assertEqual(packet_num, len(capture)) |
| 283 | for packet in capture: |
| 284 | try: |
| 285 | self.assertEqual(packet[IP].dst, in_if.remote_ip4) |
| 286 | self.assertTrue(packet.haslayer(ICMP)) |
| 287 | icmp = packet[ICMP] |
| 288 | self.assertEqual(icmp.type, icmp_type) |
| 289 | self.assertTrue(icmp.haslayer(IPerror)) |
| 290 | inner_ip = icmp[IPerror] |
| 291 | if inner_ip.haslayer(TCPerror): |
| 292 | self.assertEqual(inner_ip[TCPerror].sport, |
| 293 | self.tcp_port_in) |
| 294 | elif inner_ip.haslayer(UDPerror): |
| 295 | self.assertEqual(inner_ip[UDPerror].sport, |
| 296 | self.udp_port_in) |
| 297 | else: |
| 298 | self.assertEqual(inner_ip[ICMPerror].id, self.icmp_id_in) |
| 299 | except: |
| 300 | self.logger.error(ppp("Unexpected or invalid packet " |
| 301 | "(inside network):", packet)) |
| 302 | raise |
| 303 | |
Matus Fabian | eea28d7 | 2017-01-13 04:15:54 -0800 | [diff] [blame] | 304 | def verify_ipfix_nat44_ses(self, data): |
| 305 | """ |
| 306 | Verify IPFIX NAT44 session create/delete event |
| 307 | |
| 308 | :param data: Decoded IPFIX data records |
| 309 | """ |
| 310 | nat44_ses_create_num = 0 |
| 311 | nat44_ses_delete_num = 0 |
| 312 | self.assertEqual(6, len(data)) |
| 313 | for record in data: |
| 314 | # natEvent |
| 315 | self.assertIn(ord(record[230]), [4, 5]) |
| 316 | if ord(record[230]) == 4: |
| 317 | nat44_ses_create_num += 1 |
| 318 | else: |
| 319 | nat44_ses_delete_num += 1 |
| 320 | # sourceIPv4Address |
| 321 | self.assertEqual(self.pg0.remote_ip4n, record[8]) |
| 322 | # postNATSourceIPv4Address |
| 323 | self.assertEqual(socket.inet_pton(socket.AF_INET, self.snat_addr), |
| 324 | record[225]) |
| 325 | # ingressVRFID |
| 326 | self.assertEqual(struct.pack("!I", 0), record[234]) |
| 327 | # protocolIdentifier/sourceTransportPort/postNAPTSourceTransportPort |
| 328 | if IP_PROTOS.icmp == ord(record[4]): |
| 329 | self.assertEqual(struct.pack("!H", self.icmp_id_in), record[7]) |
| 330 | self.assertEqual(struct.pack("!H", self.icmp_id_out), |
| 331 | record[227]) |
| 332 | elif IP_PROTOS.tcp == ord(record[4]): |
| 333 | self.assertEqual(struct.pack("!H", self.tcp_port_in), |
| 334 | record[7]) |
| 335 | self.assertEqual(struct.pack("!H", self.tcp_port_out), |
| 336 | record[227]) |
| 337 | elif IP_PROTOS.udp == ord(record[4]): |
| 338 | self.assertEqual(struct.pack("!H", self.udp_port_in), |
| 339 | record[7]) |
| 340 | self.assertEqual(struct.pack("!H", self.udp_port_out), |
| 341 | record[227]) |
| 342 | else: |
| 343 | self.fail("Invalid protocol") |
| 344 | self.assertEqual(3, nat44_ses_create_num) |
| 345 | self.assertEqual(3, nat44_ses_delete_num) |
| 346 | |
| 347 | def verify_ipfix_addr_exhausted(self, data): |
| 348 | """ |
| 349 | Verify IPFIX NAT addresses event |
| 350 | |
| 351 | :param data: Decoded IPFIX data records |
| 352 | """ |
| 353 | self.assertEqual(1, len(data)) |
| 354 | record = data[0] |
| 355 | # natEvent |
| 356 | self.assertEqual(ord(record[230]), 3) |
| 357 | # natPoolID |
| 358 | self.assertEqual(struct.pack("!I", 0), record[283]) |
| 359 | |
Martin Gálik | d7f75cd | 2017-03-27 06:02:47 -0700 | [diff] [blame] | 360 | |
| 361 | class TestSNAT(MethodHolder): |
| 362 | """ SNAT Test Cases """ |
| 363 | |
| 364 | @classmethod |
| 365 | def setUpClass(cls): |
| 366 | super(TestSNAT, cls).setUpClass() |
| 367 | |
| 368 | try: |
| 369 | cls.tcp_port_in = 6303 |
| 370 | cls.tcp_port_out = 6303 |
| 371 | cls.udp_port_in = 6304 |
| 372 | cls.udp_port_out = 6304 |
| 373 | cls.icmp_id_in = 6305 |
| 374 | cls.icmp_id_out = 6305 |
| 375 | cls.snat_addr = '10.0.0.3' |
Matus Fabian | 6631e9c | 2017-05-24 01:52:20 -0700 | [diff] [blame] | 376 | cls.ipfix_src_port = 4739 |
| 377 | cls.ipfix_domain_id = 1 |
Martin Gálik | d7f75cd | 2017-03-27 06:02:47 -0700 | [diff] [blame] | 378 | |
Martin Gálik | 406eb1d | 2017-05-04 04:35:04 -0700 | [diff] [blame] | 379 | cls.create_pg_interfaces(range(9)) |
Martin Gálik | d7f75cd | 2017-03-27 06:02:47 -0700 | [diff] [blame] | 380 | cls.interfaces = list(cls.pg_interfaces[0:4]) |
| 381 | |
| 382 | for i in cls.interfaces: |
| 383 | i.admin_up() |
| 384 | i.config_ip4() |
| 385 | i.resolve_arp() |
| 386 | |
Matus Fabian | 6fa74c6 | 2017-06-05 05:55:48 -0700 | [diff] [blame] | 387 | cls.pg0.generate_remote_hosts(3) |
Martin Gálik | d7f75cd | 2017-03-27 06:02:47 -0700 | [diff] [blame] | 388 | cls.pg0.configure_ipv4_neighbors() |
| 389 | |
| 390 | cls.overlapping_interfaces = list(list(cls.pg_interfaces[4:7])) |
| 391 | |
| 392 | cls.pg4._local_ip4 = "172.16.255.1" |
| 393 | cls.pg4._local_ip4n = socket.inet_pton(socket.AF_INET, i.local_ip4) |
| 394 | cls.pg4._remote_hosts[0]._ip4 = "172.16.255.2" |
| 395 | cls.pg4.set_table_ip4(10) |
| 396 | cls.pg5._local_ip4 = "172.16.255.3" |
| 397 | cls.pg5._local_ip4n = socket.inet_pton(socket.AF_INET, i.local_ip4) |
| 398 | cls.pg5._remote_hosts[0]._ip4 = "172.16.255.4" |
| 399 | cls.pg5.set_table_ip4(10) |
| 400 | cls.pg6._local_ip4 = "172.16.255.1" |
| 401 | cls.pg6._local_ip4n = socket.inet_pton(socket.AF_INET, i.local_ip4) |
| 402 | cls.pg6._remote_hosts[0]._ip4 = "172.16.255.2" |
| 403 | cls.pg6.set_table_ip4(20) |
| 404 | for i in cls.overlapping_interfaces: |
| 405 | i.config_ip4() |
| 406 | i.admin_up() |
| 407 | i.resolve_arp() |
| 408 | |
| 409 | cls.pg7.admin_up() |
Martin Gálik | 406eb1d | 2017-05-04 04:35:04 -0700 | [diff] [blame] | 410 | cls.pg8.admin_up() |
Martin Gálik | d7f75cd | 2017-03-27 06:02:47 -0700 | [diff] [blame] | 411 | |
| 412 | except Exception: |
| 413 | super(TestSNAT, cls).tearDownClass() |
| 414 | raise |
| 415 | |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 416 | def clear_snat(self): |
| 417 | """ |
| 418 | Clear SNAT configuration. |
| 419 | """ |
Martin Gálik | 406eb1d | 2017-05-04 04:35:04 -0700 | [diff] [blame] | 420 | # I found no elegant way to do this |
| 421 | self.vapi.ip_add_del_route(dst_address=self.pg7.remote_ip4n, |
| 422 | dst_address_length=32, |
| 423 | next_hop_address=self.pg7.remote_ip4n, |
| 424 | next_hop_sw_if_index=self.pg7.sw_if_index, |
| 425 | is_add=0) |
| 426 | self.vapi.ip_add_del_route(dst_address=self.pg8.remote_ip4n, |
| 427 | dst_address_length=32, |
| 428 | next_hop_address=self.pg8.remote_ip4n, |
| 429 | next_hop_sw_if_index=self.pg8.sw_if_index, |
| 430 | is_add=0) |
| 431 | |
| 432 | for intf in [self.pg7, self.pg8]: |
| 433 | neighbors = self.vapi.ip_neighbor_dump(intf.sw_if_index) |
| 434 | for n in neighbors: |
| 435 | self.vapi.ip_neighbor_add_del(intf.sw_if_index, |
| 436 | n.mac_address, |
| 437 | n.ip_address, |
| 438 | is_add=0) |
| 439 | |
Matus Fabian | 36532bd | 2017-01-23 23:42:28 -0800 | [diff] [blame] | 440 | if self.pg7.has_ip4_config: |
| 441 | self.pg7.unconfig_ip4() |
| 442 | |
Matus Fabian | 8bf68e8 | 2017-01-12 04:24:35 -0800 | [diff] [blame] | 443 | interfaces = self.vapi.snat_interface_addr_dump() |
| 444 | for intf in interfaces: |
| 445 | self.vapi.snat_add_interface_addr(intf.sw_if_index, is_add=0) |
| 446 | |
Matus Fabian | 6631e9c | 2017-05-24 01:52:20 -0700 | [diff] [blame] | 447 | self.vapi.snat_ipfix(enable=0, src_port=self.ipfix_src_port, |
| 448 | domain_id=self.ipfix_domain_id) |
| 449 | self.ipfix_src_port = 4739 |
| 450 | self.ipfix_domain_id = 1 |
Matus Fabian | eea28d7 | 2017-01-13 04:15:54 -0800 | [diff] [blame] | 451 | |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 452 | interfaces = self.vapi.snat_interface_dump() |
| 453 | for intf in interfaces: |
| 454 | self.vapi.snat_interface_add_del_feature(intf.sw_if_index, |
| 455 | intf.is_inside, |
| 456 | is_add=0) |
| 457 | |
| 458 | static_mappings = self.vapi.snat_static_mapping_dump() |
| 459 | for sm in static_mappings: |
| 460 | self.vapi.snat_add_static_mapping(sm.local_ip_address, |
| 461 | sm.external_ip_address, |
| 462 | local_port=sm.local_port, |
| 463 | external_port=sm.external_port, |
| 464 | addr_only=sm.addr_only, |
| 465 | vrf_id=sm.vrf_id, |
Matus Fabian | 09d96f4 | 2017-02-02 01:43:00 -0800 | [diff] [blame] | 466 | protocol=sm.protocol, |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 467 | is_add=0) |
| 468 | |
| 469 | adresses = self.vapi.snat_address_dump() |
| 470 | for addr in adresses: |
| 471 | self.vapi.snat_add_address_range(addr.ip_address, |
| 472 | addr.ip_address, |
| 473 | is_add=0) |
| 474 | |
Matus Fabian | 36532bd | 2017-01-23 23:42:28 -0800 | [diff] [blame] | 475 | def snat_add_static_mapping(self, local_ip, external_ip='0.0.0.0', |
| 476 | local_port=0, external_port=0, vrf_id=0, |
Matus Fabian | 09d96f4 | 2017-02-02 01:43:00 -0800 | [diff] [blame] | 477 | is_add=1, external_sw_if_index=0xFFFFFFFF, |
| 478 | proto=0): |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 479 | """ |
| 480 | Add/delete S-NAT static mapping |
| 481 | |
| 482 | :param local_ip: Local IP address |
| 483 | :param external_ip: External IP address |
| 484 | :param local_port: Local port number (Optional) |
| 485 | :param external_port: External port number (Optional) |
| 486 | :param vrf_id: VRF ID (Default 0) |
| 487 | :param is_add: 1 if add, 0 if delete (Default add) |
Matus Fabian | 36532bd | 2017-01-23 23:42:28 -0800 | [diff] [blame] | 488 | :param external_sw_if_index: External interface instead of IP address |
Matus Fabian | 09d96f4 | 2017-02-02 01:43:00 -0800 | [diff] [blame] | 489 | :param proto: IP protocol (Mandatory if port specified) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 490 | """ |
| 491 | addr_only = 1 |
| 492 | if local_port and external_port: |
| 493 | addr_only = 0 |
| 494 | l_ip = socket.inet_pton(socket.AF_INET, local_ip) |
| 495 | e_ip = socket.inet_pton(socket.AF_INET, external_ip) |
Klement Sekera | da505f6 | 2017-01-04 12:58:53 +0100 | [diff] [blame] | 496 | self.vapi.snat_add_static_mapping( |
| 497 | l_ip, |
| 498 | e_ip, |
Matus Fabian | 36532bd | 2017-01-23 23:42:28 -0800 | [diff] [blame] | 499 | external_sw_if_index, |
Klement Sekera | da505f6 | 2017-01-04 12:58:53 +0100 | [diff] [blame] | 500 | local_port, |
| 501 | external_port, |
| 502 | addr_only, |
| 503 | vrf_id, |
Matus Fabian | 09d96f4 | 2017-02-02 01:43:00 -0800 | [diff] [blame] | 504 | proto, |
Klement Sekera | da505f6 | 2017-01-04 12:58:53 +0100 | [diff] [blame] | 505 | is_add) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 506 | |
Juraj Sloboda | eab38d9 | 2017-03-06 19:55:21 -0800 | [diff] [blame] | 507 | def snat_add_address(self, ip, is_add=1, vrf_id=0xFFFFFFFF): |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 508 | """ |
| 509 | Add/delete S-NAT address |
| 510 | |
| 511 | :param ip: IP address |
| 512 | :param is_add: 1 if add, 0 if delete (Default add) |
| 513 | """ |
| 514 | snat_addr = socket.inet_pton(socket.AF_INET, ip) |
Juraj Sloboda | eab38d9 | 2017-03-06 19:55:21 -0800 | [diff] [blame] | 515 | self.vapi.snat_add_address_range(snat_addr, snat_addr, is_add, |
| 516 | vrf_id=vrf_id) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 517 | |
| 518 | def test_dynamic(self): |
| 519 | """ SNAT dynamic translation test """ |
| 520 | |
| 521 | self.snat_add_address(self.snat_addr) |
| 522 | self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index) |
| 523 | self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index, |
| 524 | is_inside=0) |
| 525 | |
| 526 | # in2out |
| 527 | pkts = self.create_stream_in(self.pg0, self.pg1) |
| 528 | self.pg0.add_stream(pkts) |
| 529 | self.pg_enable_capture(self.pg_interfaces) |
| 530 | self.pg_start() |
Klement Sekera | dab231a | 2016-12-21 08:50:14 +0100 | [diff] [blame] | 531 | capture = self.pg1.get_capture(len(pkts)) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 532 | self.verify_capture_out(capture) |
| 533 | |
| 534 | # out2in |
| 535 | pkts = self.create_stream_out(self.pg1) |
| 536 | self.pg1.add_stream(pkts) |
| 537 | self.pg_enable_capture(self.pg_interfaces) |
| 538 | self.pg_start() |
Klement Sekera | dab231a | 2016-12-21 08:50:14 +0100 | [diff] [blame] | 539 | capture = self.pg0.get_capture(len(pkts)) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 540 | self.verify_capture_in(capture, self.pg0) |
| 541 | |
Juraj Sloboda | b33f413 | 2017-02-08 23:54:21 -0800 | [diff] [blame] | 542 | def test_dynamic_icmp_errors_in2out_ttl_1(self): |
| 543 | """ SNAT handling of client packets with TTL=1 """ |
| 544 | |
| 545 | self.snat_add_address(self.snat_addr) |
| 546 | self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index) |
| 547 | self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index, |
| 548 | is_inside=0) |
| 549 | |
| 550 | # Client side - generate traffic |
| 551 | pkts = self.create_stream_in(self.pg0, self.pg1, ttl=1) |
| 552 | self.pg0.add_stream(pkts) |
| 553 | self.pg_enable_capture(self.pg_interfaces) |
| 554 | self.pg_start() |
| 555 | |
| 556 | # Client side - verify ICMP type 11 packets |
| 557 | capture = self.pg0.get_capture(len(pkts)) |
| 558 | self.verify_capture_in_with_icmp_errors(capture, self.pg0) |
| 559 | |
| 560 | def test_dynamic_icmp_errors_out2in_ttl_1(self): |
| 561 | """ SNAT handling of server packets with TTL=1 """ |
| 562 | |
| 563 | self.snat_add_address(self.snat_addr) |
| 564 | self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index) |
| 565 | self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index, |
| 566 | is_inside=0) |
| 567 | |
| 568 | # Client side - create sessions |
| 569 | pkts = self.create_stream_in(self.pg0, self.pg1) |
| 570 | self.pg0.add_stream(pkts) |
| 571 | self.pg_enable_capture(self.pg_interfaces) |
| 572 | self.pg_start() |
| 573 | |
| 574 | # Server side - generate traffic |
| 575 | capture = self.pg1.get_capture(len(pkts)) |
| 576 | self.verify_capture_out(capture) |
| 577 | pkts = self.create_stream_out(self.pg1, ttl=1) |
| 578 | self.pg1.add_stream(pkts) |
| 579 | self.pg_enable_capture(self.pg_interfaces) |
| 580 | self.pg_start() |
| 581 | |
| 582 | # Server side - verify ICMP type 11 packets |
| 583 | capture = self.pg1.get_capture(len(pkts)) |
| 584 | self.verify_capture_out_with_icmp_errors(capture, |
| 585 | src_ip=self.pg1.local_ip4) |
| 586 | |
| 587 | def test_dynamic_icmp_errors_in2out_ttl_2(self): |
Juraj Sloboda | 665e482 | 2017-02-16 17:17:19 -0800 | [diff] [blame] | 588 | """ SNAT handling of error responses to client packets with TTL=2 """ |
Juraj Sloboda | b33f413 | 2017-02-08 23:54:21 -0800 | [diff] [blame] | 589 | |
| 590 | self.snat_add_address(self.snat_addr) |
| 591 | self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index) |
| 592 | self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index, |
| 593 | is_inside=0) |
| 594 | |
| 595 | # Client side - generate traffic |
| 596 | pkts = self.create_stream_in(self.pg0, self.pg1, ttl=2) |
| 597 | self.pg0.add_stream(pkts) |
| 598 | self.pg_enable_capture(self.pg_interfaces) |
| 599 | self.pg_start() |
| 600 | |
| 601 | # Server side - simulate ICMP type 11 response |
| 602 | capture = self.pg1.get_capture(len(pkts)) |
| 603 | pkts = [Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) / |
| 604 | IP(src=self.pg1.remote_ip4, dst=self.snat_addr) / |
| 605 | ICMP(type=11) / packet[IP] for packet in capture] |
| 606 | self.pg1.add_stream(pkts) |
| 607 | self.pg_enable_capture(self.pg_interfaces) |
| 608 | self.pg_start() |
| 609 | |
| 610 | # Client side - verify ICMP type 11 packets |
| 611 | capture = self.pg0.get_capture(len(pkts)) |
| 612 | self.verify_capture_in_with_icmp_errors(capture, self.pg0) |
| 613 | |
| 614 | def test_dynamic_icmp_errors_out2in_ttl_2(self): |
Juraj Sloboda | 665e482 | 2017-02-16 17:17:19 -0800 | [diff] [blame] | 615 | """ SNAT handling of error responses to server packets with TTL=2 """ |
Juraj Sloboda | b33f413 | 2017-02-08 23:54:21 -0800 | [diff] [blame] | 616 | |
| 617 | self.snat_add_address(self.snat_addr) |
| 618 | self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index) |
| 619 | self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index, |
| 620 | is_inside=0) |
| 621 | |
| 622 | # Client side - create sessions |
| 623 | pkts = self.create_stream_in(self.pg0, self.pg1) |
| 624 | self.pg0.add_stream(pkts) |
| 625 | self.pg_enable_capture(self.pg_interfaces) |
| 626 | self.pg_start() |
| 627 | |
| 628 | # Server side - generate traffic |
| 629 | capture = self.pg1.get_capture(len(pkts)) |
| 630 | self.verify_capture_out(capture) |
| 631 | pkts = self.create_stream_out(self.pg1, ttl=2) |
| 632 | self.pg1.add_stream(pkts) |
| 633 | self.pg_enable_capture(self.pg_interfaces) |
| 634 | self.pg_start() |
| 635 | |
| 636 | # Client side - simulate ICMP type 11 response |
| 637 | capture = self.pg0.get_capture(len(pkts)) |
| 638 | pkts = [Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / |
| 639 | IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) / |
| 640 | ICMP(type=11) / packet[IP] for packet in capture] |
| 641 | self.pg0.add_stream(pkts) |
| 642 | self.pg_enable_capture(self.pg_interfaces) |
| 643 | self.pg_start() |
| 644 | |
| 645 | # Server side - verify ICMP type 11 packets |
| 646 | capture = self.pg1.get_capture(len(pkts)) |
| 647 | self.verify_capture_out_with_icmp_errors(capture) |
| 648 | |
Juraj Sloboda | 665e482 | 2017-02-16 17:17:19 -0800 | [diff] [blame] | 649 | def test_ping_out_interface_from_outside(self): |
Juraj Sloboda | d367768 | 2017-04-14 03:24:45 +0200 | [diff] [blame] | 650 | """ Ping SNAT out interface from outside network """ |
Juraj Sloboda | 665e482 | 2017-02-16 17:17:19 -0800 | [diff] [blame] | 651 | |
| 652 | self.snat_add_address(self.snat_addr) |
| 653 | self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index) |
| 654 | self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index, |
| 655 | is_inside=0) |
| 656 | |
| 657 | p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) / |
| 658 | IP(src=self.pg1.remote_ip4, dst=self.pg1.local_ip4) / |
| 659 | ICMP(id=self.icmp_id_out, type='echo-request')) |
| 660 | pkts = [p] |
| 661 | self.pg1.add_stream(pkts) |
| 662 | self.pg_enable_capture(self.pg_interfaces) |
| 663 | self.pg_start() |
| 664 | capture = self.pg1.get_capture(len(pkts)) |
| 665 | self.assertEqual(1, len(capture)) |
| 666 | packet = capture[0] |
| 667 | try: |
| 668 | self.assertEqual(packet[IP].src, self.pg1.local_ip4) |
| 669 | self.assertEqual(packet[IP].dst, self.pg1.remote_ip4) |
| 670 | self.assertEqual(packet[ICMP].id, self.icmp_id_in) |
| 671 | self.assertEqual(packet[ICMP].type, 0) # echo reply |
| 672 | except: |
| 673 | self.logger.error(ppp("Unexpected or invalid packet " |
| 674 | "(outside network):", packet)) |
| 675 | raise |
| 676 | |
Juraj Sloboda | d367768 | 2017-04-14 03:24:45 +0200 | [diff] [blame] | 677 | def test_ping_internal_host_from_outside(self): |
| 678 | """ Ping internal host from outside network """ |
| 679 | |
| 680 | self.snat_add_static_mapping(self.pg0.remote_ip4, self.snat_addr) |
| 681 | self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index) |
| 682 | self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index, |
| 683 | is_inside=0) |
| 684 | |
| 685 | # out2in |
| 686 | pkt = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) / |
| 687 | IP(src=self.pg1.remote_ip4, dst=self.snat_addr, ttl=64) / |
| 688 | ICMP(id=self.icmp_id_out, type='echo-request')) |
| 689 | self.pg1.add_stream(pkt) |
| 690 | self.pg_enable_capture(self.pg_interfaces) |
| 691 | self.pg_start() |
| 692 | capture = self.pg0.get_capture(1) |
| 693 | self.verify_capture_in(capture, self.pg0, packet_num=1) |
| 694 | self.assert_equal(capture[0][IP].proto, IP_PROTOS.icmp) |
| 695 | |
| 696 | # in2out |
| 697 | pkt = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / |
| 698 | IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4, ttl=64) / |
| 699 | ICMP(id=self.icmp_id_in, type='echo-reply')) |
| 700 | self.pg0.add_stream(pkt) |
| 701 | self.pg_enable_capture(self.pg_interfaces) |
| 702 | self.pg_start() |
| 703 | capture = self.pg1.get_capture(1) |
| 704 | self.verify_capture_out(capture, same_port=True, packet_num=1) |
| 705 | self.assert_equal(capture[0][IP].proto, IP_PROTOS.icmp) |
| 706 | |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 707 | def test_static_in(self): |
| 708 | """ SNAT 1:1 NAT initialized from inside network """ |
| 709 | |
| 710 | nat_ip = "10.0.0.10" |
| 711 | self.tcp_port_out = 6303 |
| 712 | self.udp_port_out = 6304 |
| 713 | self.icmp_id_out = 6305 |
| 714 | |
| 715 | self.snat_add_static_mapping(self.pg0.remote_ip4, nat_ip) |
| 716 | self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index) |
| 717 | self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index, |
| 718 | is_inside=0) |
| 719 | |
| 720 | # in2out |
| 721 | pkts = self.create_stream_in(self.pg0, self.pg1) |
| 722 | self.pg0.add_stream(pkts) |
| 723 | self.pg_enable_capture(self.pg_interfaces) |
| 724 | self.pg_start() |
Klement Sekera | dab231a | 2016-12-21 08:50:14 +0100 | [diff] [blame] | 725 | capture = self.pg1.get_capture(len(pkts)) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 726 | self.verify_capture_out(capture, nat_ip, True) |
| 727 | |
| 728 | # out2in |
| 729 | pkts = self.create_stream_out(self.pg1, nat_ip) |
| 730 | self.pg1.add_stream(pkts) |
| 731 | self.pg_enable_capture(self.pg_interfaces) |
| 732 | self.pg_start() |
Klement Sekera | dab231a | 2016-12-21 08:50:14 +0100 | [diff] [blame] | 733 | capture = self.pg0.get_capture(len(pkts)) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 734 | self.verify_capture_in(capture, self.pg0) |
| 735 | |
| 736 | def test_static_out(self): |
| 737 | """ SNAT 1:1 NAT initialized from outside network """ |
| 738 | |
| 739 | nat_ip = "10.0.0.20" |
| 740 | self.tcp_port_out = 6303 |
| 741 | self.udp_port_out = 6304 |
| 742 | self.icmp_id_out = 6305 |
| 743 | |
| 744 | self.snat_add_static_mapping(self.pg0.remote_ip4, nat_ip) |
| 745 | self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index) |
| 746 | self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index, |
| 747 | is_inside=0) |
| 748 | |
| 749 | # out2in |
| 750 | pkts = self.create_stream_out(self.pg1, nat_ip) |
| 751 | self.pg1.add_stream(pkts) |
| 752 | self.pg_enable_capture(self.pg_interfaces) |
| 753 | self.pg_start() |
Klement Sekera | dab231a | 2016-12-21 08:50:14 +0100 | [diff] [blame] | 754 | capture = self.pg0.get_capture(len(pkts)) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 755 | self.verify_capture_in(capture, self.pg0) |
| 756 | |
| 757 | # in2out |
| 758 | pkts = self.create_stream_in(self.pg0, self.pg1) |
| 759 | self.pg0.add_stream(pkts) |
| 760 | self.pg_enable_capture(self.pg_interfaces) |
| 761 | self.pg_start() |
Klement Sekera | dab231a | 2016-12-21 08:50:14 +0100 | [diff] [blame] | 762 | capture = self.pg1.get_capture(len(pkts)) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 763 | self.verify_capture_out(capture, nat_ip, True) |
| 764 | |
| 765 | def test_static_with_port_in(self): |
| 766 | """ SNAT 1:1 NAT with port initialized from inside network """ |
| 767 | |
| 768 | self.tcp_port_out = 3606 |
| 769 | self.udp_port_out = 3607 |
| 770 | self.icmp_id_out = 3608 |
| 771 | |
| 772 | self.snat_add_address(self.snat_addr) |
| 773 | self.snat_add_static_mapping(self.pg0.remote_ip4, self.snat_addr, |
Matus Fabian | 09d96f4 | 2017-02-02 01:43:00 -0800 | [diff] [blame] | 774 | self.tcp_port_in, self.tcp_port_out, |
| 775 | proto=IP_PROTOS.tcp) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 776 | self.snat_add_static_mapping(self.pg0.remote_ip4, self.snat_addr, |
Matus Fabian | 09d96f4 | 2017-02-02 01:43:00 -0800 | [diff] [blame] | 777 | self.udp_port_in, self.udp_port_out, |
| 778 | proto=IP_PROTOS.udp) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 779 | self.snat_add_static_mapping(self.pg0.remote_ip4, self.snat_addr, |
Matus Fabian | 09d96f4 | 2017-02-02 01:43:00 -0800 | [diff] [blame] | 780 | self.icmp_id_in, self.icmp_id_out, |
| 781 | proto=IP_PROTOS.icmp) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 782 | self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index) |
| 783 | self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index, |
| 784 | is_inside=0) |
| 785 | |
| 786 | # in2out |
| 787 | pkts = self.create_stream_in(self.pg0, self.pg1) |
| 788 | self.pg0.add_stream(pkts) |
| 789 | self.pg_enable_capture(self.pg_interfaces) |
| 790 | self.pg_start() |
Klement Sekera | dab231a | 2016-12-21 08:50:14 +0100 | [diff] [blame] | 791 | capture = self.pg1.get_capture(len(pkts)) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 792 | self.verify_capture_out(capture) |
| 793 | |
| 794 | # out2in |
| 795 | pkts = self.create_stream_out(self.pg1) |
| 796 | self.pg1.add_stream(pkts) |
| 797 | self.pg_enable_capture(self.pg_interfaces) |
| 798 | self.pg_start() |
Klement Sekera | dab231a | 2016-12-21 08:50:14 +0100 | [diff] [blame] | 799 | capture = self.pg0.get_capture(len(pkts)) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 800 | self.verify_capture_in(capture, self.pg0) |
| 801 | |
| 802 | def test_static_with_port_out(self): |
| 803 | """ SNAT 1:1 NAT with port initialized from outside network """ |
| 804 | |
| 805 | self.tcp_port_out = 30606 |
| 806 | self.udp_port_out = 30607 |
| 807 | self.icmp_id_out = 30608 |
| 808 | |
| 809 | self.snat_add_address(self.snat_addr) |
| 810 | self.snat_add_static_mapping(self.pg0.remote_ip4, self.snat_addr, |
Matus Fabian | 09d96f4 | 2017-02-02 01:43:00 -0800 | [diff] [blame] | 811 | self.tcp_port_in, self.tcp_port_out, |
| 812 | proto=IP_PROTOS.tcp) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 813 | self.snat_add_static_mapping(self.pg0.remote_ip4, self.snat_addr, |
Matus Fabian | 09d96f4 | 2017-02-02 01:43:00 -0800 | [diff] [blame] | 814 | self.udp_port_in, self.udp_port_out, |
| 815 | proto=IP_PROTOS.udp) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 816 | self.snat_add_static_mapping(self.pg0.remote_ip4, self.snat_addr, |
Matus Fabian | 09d96f4 | 2017-02-02 01:43:00 -0800 | [diff] [blame] | 817 | self.icmp_id_in, self.icmp_id_out, |
| 818 | proto=IP_PROTOS.icmp) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 819 | self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index) |
| 820 | self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index, |
| 821 | is_inside=0) |
| 822 | |
| 823 | # out2in |
| 824 | pkts = self.create_stream_out(self.pg1) |
| 825 | self.pg1.add_stream(pkts) |
| 826 | self.pg_enable_capture(self.pg_interfaces) |
| 827 | self.pg_start() |
Klement Sekera | dab231a | 2016-12-21 08:50:14 +0100 | [diff] [blame] | 828 | capture = self.pg0.get_capture(len(pkts)) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 829 | self.verify_capture_in(capture, self.pg0) |
| 830 | |
| 831 | # in2out |
| 832 | pkts = self.create_stream_in(self.pg0, self.pg1) |
| 833 | self.pg0.add_stream(pkts) |
| 834 | self.pg_enable_capture(self.pg_interfaces) |
| 835 | self.pg_start() |
Klement Sekera | dab231a | 2016-12-21 08:50:14 +0100 | [diff] [blame] | 836 | capture = self.pg1.get_capture(len(pkts)) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 837 | self.verify_capture_out(capture) |
| 838 | |
| 839 | def test_static_vrf_aware(self): |
| 840 | """ SNAT 1:1 NAT VRF awareness """ |
| 841 | |
| 842 | nat_ip1 = "10.0.0.30" |
| 843 | nat_ip2 = "10.0.0.40" |
| 844 | self.tcp_port_out = 6303 |
| 845 | self.udp_port_out = 6304 |
| 846 | self.icmp_id_out = 6305 |
| 847 | |
| 848 | self.snat_add_static_mapping(self.pg4.remote_ip4, nat_ip1, |
Matus Fabian | 675a69c | 2017-01-18 01:46:01 -0800 | [diff] [blame] | 849 | vrf_id=10) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 850 | self.snat_add_static_mapping(self.pg0.remote_ip4, nat_ip2, |
Matus Fabian | 675a69c | 2017-01-18 01:46:01 -0800 | [diff] [blame] | 851 | vrf_id=10) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 852 | self.vapi.snat_interface_add_del_feature(self.pg3.sw_if_index, |
| 853 | is_inside=0) |
| 854 | self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index) |
| 855 | self.vapi.snat_interface_add_del_feature(self.pg4.sw_if_index) |
| 856 | |
| 857 | # inside interface VRF match SNAT static mapping VRF |
| 858 | pkts = self.create_stream_in(self.pg4, self.pg3) |
| 859 | self.pg4.add_stream(pkts) |
| 860 | self.pg_enable_capture(self.pg_interfaces) |
| 861 | self.pg_start() |
Klement Sekera | dab231a | 2016-12-21 08:50:14 +0100 | [diff] [blame] | 862 | capture = self.pg3.get_capture(len(pkts)) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 863 | self.verify_capture_out(capture, nat_ip1, True) |
| 864 | |
| 865 | # inside interface VRF don't match SNAT static mapping VRF (packets |
| 866 | # are dropped) |
| 867 | pkts = self.create_stream_in(self.pg0, self.pg3) |
| 868 | self.pg0.add_stream(pkts) |
| 869 | self.pg_enable_capture(self.pg_interfaces) |
| 870 | self.pg_start() |
Klement Sekera | 9225dee | 2016-12-12 08:36:58 +0100 | [diff] [blame] | 871 | self.pg3.assert_nothing_captured() |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 872 | |
| 873 | def test_multiple_inside_interfaces(self): |
Matus Fabian | e1ae29a | 2017-01-27 00:47:58 -0800 | [diff] [blame] | 874 | """ SNAT multiple inside interfaces (non-overlapping address space) """ |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 875 | |
| 876 | self.snat_add_address(self.snat_addr) |
| 877 | self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index) |
| 878 | self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 879 | self.vapi.snat_interface_add_del_feature(self.pg3.sw_if_index, |
| 880 | is_inside=0) |
| 881 | |
Matus Fabian | 675a69c | 2017-01-18 01:46:01 -0800 | [diff] [blame] | 882 | # between two S-NAT inside interfaces (no translation) |
| 883 | pkts = self.create_stream_in(self.pg0, self.pg1) |
| 884 | self.pg0.add_stream(pkts) |
| 885 | self.pg_enable_capture(self.pg_interfaces) |
| 886 | self.pg_start() |
| 887 | capture = self.pg1.get_capture(len(pkts)) |
| 888 | self.verify_capture_no_translation(capture, self.pg0, self.pg1) |
| 889 | |
| 890 | # from S-NAT inside to interface without S-NAT feature (no translation) |
| 891 | pkts = self.create_stream_in(self.pg0, self.pg2) |
| 892 | self.pg0.add_stream(pkts) |
| 893 | self.pg_enable_capture(self.pg_interfaces) |
| 894 | self.pg_start() |
| 895 | capture = self.pg2.get_capture(len(pkts)) |
| 896 | self.verify_capture_no_translation(capture, self.pg0, self.pg2) |
| 897 | |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 898 | # in2out 1st interface |
| 899 | pkts = self.create_stream_in(self.pg0, self.pg3) |
| 900 | self.pg0.add_stream(pkts) |
| 901 | self.pg_enable_capture(self.pg_interfaces) |
| 902 | self.pg_start() |
Klement Sekera | dab231a | 2016-12-21 08:50:14 +0100 | [diff] [blame] | 903 | capture = self.pg3.get_capture(len(pkts)) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 904 | self.verify_capture_out(capture) |
| 905 | |
| 906 | # out2in 1st interface |
| 907 | pkts = self.create_stream_out(self.pg3) |
| 908 | self.pg3.add_stream(pkts) |
| 909 | self.pg_enable_capture(self.pg_interfaces) |
| 910 | self.pg_start() |
Klement Sekera | dab231a | 2016-12-21 08:50:14 +0100 | [diff] [blame] | 911 | capture = self.pg0.get_capture(len(pkts)) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 912 | self.verify_capture_in(capture, self.pg0) |
| 913 | |
| 914 | # in2out 2nd interface |
| 915 | pkts = self.create_stream_in(self.pg1, self.pg3) |
| 916 | self.pg1.add_stream(pkts) |
| 917 | self.pg_enable_capture(self.pg_interfaces) |
| 918 | self.pg_start() |
Klement Sekera | dab231a | 2016-12-21 08:50:14 +0100 | [diff] [blame] | 919 | capture = self.pg3.get_capture(len(pkts)) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 920 | self.verify_capture_out(capture) |
| 921 | |
| 922 | # out2in 2nd interface |
| 923 | pkts = self.create_stream_out(self.pg3) |
| 924 | self.pg3.add_stream(pkts) |
| 925 | self.pg_enable_capture(self.pg_interfaces) |
| 926 | self.pg_start() |
Klement Sekera | dab231a | 2016-12-21 08:50:14 +0100 | [diff] [blame] | 927 | capture = self.pg1.get_capture(len(pkts)) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 928 | self.verify_capture_in(capture, self.pg1) |
| 929 | |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 930 | def test_inside_overlapping_interfaces(self): |
| 931 | """ SNAT multiple inside interfaces with overlapping address space """ |
| 932 | |
Matus Fabian | 675a69c | 2017-01-18 01:46:01 -0800 | [diff] [blame] | 933 | static_nat_ip = "10.0.0.10" |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 934 | self.snat_add_address(self.snat_addr) |
| 935 | self.vapi.snat_interface_add_del_feature(self.pg3.sw_if_index, |
| 936 | is_inside=0) |
| 937 | self.vapi.snat_interface_add_del_feature(self.pg4.sw_if_index) |
| 938 | self.vapi.snat_interface_add_del_feature(self.pg5.sw_if_index) |
| 939 | self.vapi.snat_interface_add_del_feature(self.pg6.sw_if_index) |
Matus Fabian | 675a69c | 2017-01-18 01:46:01 -0800 | [diff] [blame] | 940 | self.snat_add_static_mapping(self.pg6.remote_ip4, static_nat_ip, |
| 941 | vrf_id=20) |
| 942 | |
| 943 | # between S-NAT inside interfaces with same VRF (no translation) |
| 944 | pkts = self.create_stream_in(self.pg4, self.pg5) |
| 945 | self.pg4.add_stream(pkts) |
| 946 | self.pg_enable_capture(self.pg_interfaces) |
| 947 | self.pg_start() |
| 948 | capture = self.pg5.get_capture(len(pkts)) |
| 949 | self.verify_capture_no_translation(capture, self.pg4, self.pg5) |
| 950 | |
| 951 | # between S-NAT inside interfaces with different VRF (hairpinning) |
| 952 | p = (Ether(src=self.pg4.remote_mac, dst=self.pg4.local_mac) / |
| 953 | IP(src=self.pg4.remote_ip4, dst=static_nat_ip) / |
| 954 | TCP(sport=1234, dport=5678)) |
| 955 | self.pg4.add_stream(p) |
| 956 | self.pg_enable_capture(self.pg_interfaces) |
| 957 | self.pg_start() |
| 958 | capture = self.pg6.get_capture(1) |
| 959 | p = capture[0] |
| 960 | try: |
| 961 | ip = p[IP] |
| 962 | tcp = p[TCP] |
| 963 | self.assertEqual(ip.src, self.snat_addr) |
| 964 | self.assertEqual(ip.dst, self.pg6.remote_ip4) |
| 965 | self.assertNotEqual(tcp.sport, 1234) |
| 966 | self.assertEqual(tcp.dport, 5678) |
| 967 | except: |
| 968 | self.logger.error(ppp("Unexpected or invalid packet:", p)) |
| 969 | raise |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 970 | |
| 971 | # in2out 1st interface |
| 972 | pkts = self.create_stream_in(self.pg4, self.pg3) |
| 973 | self.pg4.add_stream(pkts) |
| 974 | self.pg_enable_capture(self.pg_interfaces) |
| 975 | self.pg_start() |
Klement Sekera | dab231a | 2016-12-21 08:50:14 +0100 | [diff] [blame] | 976 | capture = self.pg3.get_capture(len(pkts)) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 977 | self.verify_capture_out(capture) |
| 978 | |
| 979 | # out2in 1st interface |
| 980 | pkts = self.create_stream_out(self.pg3) |
| 981 | self.pg3.add_stream(pkts) |
| 982 | self.pg_enable_capture(self.pg_interfaces) |
| 983 | self.pg_start() |
Klement Sekera | dab231a | 2016-12-21 08:50:14 +0100 | [diff] [blame] | 984 | capture = self.pg4.get_capture(len(pkts)) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 985 | self.verify_capture_in(capture, self.pg4) |
| 986 | |
| 987 | # in2out 2nd interface |
| 988 | pkts = self.create_stream_in(self.pg5, self.pg3) |
| 989 | self.pg5.add_stream(pkts) |
| 990 | self.pg_enable_capture(self.pg_interfaces) |
| 991 | self.pg_start() |
Klement Sekera | dab231a | 2016-12-21 08:50:14 +0100 | [diff] [blame] | 992 | capture = self.pg3.get_capture(len(pkts)) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 993 | self.verify_capture_out(capture) |
| 994 | |
| 995 | # out2in 2nd interface |
| 996 | pkts = self.create_stream_out(self.pg3) |
| 997 | self.pg3.add_stream(pkts) |
| 998 | self.pg_enable_capture(self.pg_interfaces) |
| 999 | self.pg_start() |
Klement Sekera | dab231a | 2016-12-21 08:50:14 +0100 | [diff] [blame] | 1000 | capture = self.pg5.get_capture(len(pkts)) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 1001 | self.verify_capture_in(capture, self.pg5) |
| 1002 | |
magalik | 23caa88 | 2017-02-08 23:25:45 -0800 | [diff] [blame] | 1003 | # pg5 session dump |
| 1004 | addresses = self.vapi.snat_address_dump() |
| 1005 | self.assertEqual(len(addresses), 1) |
| 1006 | sessions = self.vapi.snat_user_session_dump(self.pg5.remote_ip4n, 10) |
| 1007 | self.assertEqual(len(sessions), 3) |
| 1008 | for session in sessions: |
| 1009 | self.assertFalse(session.is_static) |
| 1010 | self.assertEqual(session.inside_ip_address[0:4], |
| 1011 | self.pg5.remote_ip4n) |
| 1012 | self.assertEqual(session.outside_ip_address, |
| 1013 | addresses[0].ip_address) |
| 1014 | self.assertEqual(sessions[0].protocol, IP_PROTOS.tcp) |
| 1015 | self.assertEqual(sessions[1].protocol, IP_PROTOS.udp) |
| 1016 | self.assertEqual(sessions[2].protocol, IP_PROTOS.icmp) |
| 1017 | self.assertEqual(sessions[0].inside_port, self.tcp_port_in) |
| 1018 | self.assertEqual(sessions[1].inside_port, self.udp_port_in) |
| 1019 | self.assertEqual(sessions[2].inside_port, self.icmp_id_in) |
| 1020 | self.assertEqual(sessions[0].outside_port, self.tcp_port_out) |
| 1021 | self.assertEqual(sessions[1].outside_port, self.udp_port_out) |
| 1022 | self.assertEqual(sessions[2].outside_port, self.icmp_id_out) |
| 1023 | |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 1024 | # in2out 3rd interface |
| 1025 | pkts = self.create_stream_in(self.pg6, self.pg3) |
| 1026 | self.pg6.add_stream(pkts) |
| 1027 | self.pg_enable_capture(self.pg_interfaces) |
| 1028 | self.pg_start() |
Klement Sekera | dab231a | 2016-12-21 08:50:14 +0100 | [diff] [blame] | 1029 | capture = self.pg3.get_capture(len(pkts)) |
Matus Fabian | 675a69c | 2017-01-18 01:46:01 -0800 | [diff] [blame] | 1030 | self.verify_capture_out(capture, static_nat_ip, True) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 1031 | |
| 1032 | # out2in 3rd interface |
Matus Fabian | 675a69c | 2017-01-18 01:46:01 -0800 | [diff] [blame] | 1033 | pkts = self.create_stream_out(self.pg3, static_nat_ip) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 1034 | self.pg3.add_stream(pkts) |
| 1035 | self.pg_enable_capture(self.pg_interfaces) |
| 1036 | self.pg_start() |
Klement Sekera | dab231a | 2016-12-21 08:50:14 +0100 | [diff] [blame] | 1037 | capture = self.pg6.get_capture(len(pkts)) |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 1038 | self.verify_capture_in(capture, self.pg6) |
| 1039 | |
magalik | 23caa88 | 2017-02-08 23:25:45 -0800 | [diff] [blame] | 1040 | # general user and session dump verifications |
| 1041 | users = self.vapi.snat_user_dump() |
| 1042 | self.assertTrue(len(users) >= 3) |
| 1043 | addresses = self.vapi.snat_address_dump() |
| 1044 | self.assertEqual(len(addresses), 1) |
| 1045 | for user in users: |
| 1046 | sessions = self.vapi.snat_user_session_dump(user.ip_address, |
| 1047 | user.vrf_id) |
| 1048 | for session in sessions: |
| 1049 | self.assertEqual(user.ip_address, session.inside_ip_address) |
| 1050 | self.assertTrue(session.total_bytes > session.total_pkts > 0) |
| 1051 | self.assertTrue(session.protocol in |
| 1052 | [IP_PROTOS.tcp, IP_PROTOS.udp, |
| 1053 | IP_PROTOS.icmp]) |
| 1054 | |
| 1055 | # pg4 session dump |
| 1056 | sessions = self.vapi.snat_user_session_dump(self.pg4.remote_ip4n, 10) |
| 1057 | self.assertTrue(len(sessions) >= 4) |
| 1058 | for session in sessions: |
| 1059 | self.assertFalse(session.is_static) |
| 1060 | self.assertEqual(session.inside_ip_address[0:4], |
| 1061 | self.pg4.remote_ip4n) |
| 1062 | self.assertEqual(session.outside_ip_address, |
| 1063 | addresses[0].ip_address) |
| 1064 | |
| 1065 | # pg6 session dump |
| 1066 | sessions = self.vapi.snat_user_session_dump(self.pg6.remote_ip4n, 20) |
| 1067 | self.assertTrue(len(sessions) >= 3) |
| 1068 | for session in sessions: |
| 1069 | self.assertTrue(session.is_static) |
| 1070 | self.assertEqual(session.inside_ip_address[0:4], |
| 1071 | self.pg6.remote_ip4n) |
| 1072 | self.assertEqual(map(ord, session.outside_ip_address[0:4]), |
| 1073 | map(int, static_nat_ip.split('.'))) |
| 1074 | self.assertTrue(session.inside_port in |
| 1075 | [self.tcp_port_in, self.udp_port_in, |
| 1076 | self.icmp_id_in]) |
| 1077 | |
Matus Fabian | f78a70d | 2016-12-12 04:30:39 -0800 | [diff] [blame] | 1078 | def test_hairpinning(self): |
Matus Fabian | 6fa74c6 | 2017-06-05 05:55:48 -0700 | [diff] [blame] | 1079 | """ SNAT hairpinning - 1:1 NAT with port""" |
Matus Fabian | f78a70d | 2016-12-12 04:30:39 -0800 | [diff] [blame] | 1080 | |
| 1081 | host = self.pg0.remote_hosts[0] |
| 1082 | server = self.pg0.remote_hosts[1] |
| 1083 | host_in_port = 1234 |
| 1084 | host_out_port = 0 |
| 1085 | server_in_port = 5678 |
| 1086 | server_out_port = 8765 |
| 1087 | |
| 1088 | self.snat_add_address(self.snat_addr) |
| 1089 | self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index) |
| 1090 | self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index, |
| 1091 | is_inside=0) |
| 1092 | # add static mapping for server |
| 1093 | self.snat_add_static_mapping(server.ip4, self.snat_addr, |
Matus Fabian | 09d96f4 | 2017-02-02 01:43:00 -0800 | [diff] [blame] | 1094 | server_in_port, server_out_port, |
| 1095 | proto=IP_PROTOS.tcp) |
Matus Fabian | f78a70d | 2016-12-12 04:30:39 -0800 | [diff] [blame] | 1096 | |
| 1097 | # send packet from host to server |
| 1098 | p = (Ether(src=host.mac, dst=self.pg0.local_mac) / |
| 1099 | IP(src=host.ip4, dst=self.snat_addr) / |
| 1100 | TCP(sport=host_in_port, dport=server_out_port)) |
| 1101 | self.pg0.add_stream(p) |
| 1102 | self.pg_enable_capture(self.pg_interfaces) |
| 1103 | self.pg_start() |
Klement Sekera | dab231a | 2016-12-21 08:50:14 +0100 | [diff] [blame] | 1104 | capture = self.pg0.get_capture(1) |
Matus Fabian | f78a70d | 2016-12-12 04:30:39 -0800 | [diff] [blame] | 1105 | p = capture[0] |
| 1106 | try: |
| 1107 | ip = p[IP] |
| 1108 | tcp = p[TCP] |
| 1109 | self.assertEqual(ip.src, self.snat_addr) |
| 1110 | self.assertEqual(ip.dst, server.ip4) |
| 1111 | self.assertNotEqual(tcp.sport, host_in_port) |
| 1112 | self.assertEqual(tcp.dport, server_in_port) |
| 1113 | host_out_port = tcp.sport |
| 1114 | except: |
Klement Sekera | 9225dee | 2016-12-12 08:36:58 +0100 | [diff] [blame] | 1115 | self.logger.error(ppp("Unexpected or invalid packet:", p)) |
Matus Fabian | f78a70d | 2016-12-12 04:30:39 -0800 | [diff] [blame] | 1116 | raise |
| 1117 | |
| 1118 | # send reply from server to host |
| 1119 | p = (Ether(src=server.mac, dst=self.pg0.local_mac) / |
| 1120 | IP(src=server.ip4, dst=self.snat_addr) / |
| 1121 | TCP(sport=server_in_port, dport=host_out_port)) |
| 1122 | self.pg0.add_stream(p) |
| 1123 | self.pg_enable_capture(self.pg_interfaces) |
| 1124 | self.pg_start() |
Klement Sekera | dab231a | 2016-12-21 08:50:14 +0100 | [diff] [blame] | 1125 | capture = self.pg0.get_capture(1) |
Matus Fabian | f78a70d | 2016-12-12 04:30:39 -0800 | [diff] [blame] | 1126 | p = capture[0] |
| 1127 | try: |
| 1128 | ip = p[IP] |
| 1129 | tcp = p[TCP] |
| 1130 | self.assertEqual(ip.src, self.snat_addr) |
| 1131 | self.assertEqual(ip.dst, host.ip4) |
| 1132 | self.assertEqual(tcp.sport, server_out_port) |
| 1133 | self.assertEqual(tcp.dport, host_in_port) |
| 1134 | except: |
Klement Sekera | 9225dee | 2016-12-12 08:36:58 +0100 | [diff] [blame] | 1135 | self.logger.error(ppp("Unexpected or invalid packet:"), p) |
Matus Fabian | f78a70d | 2016-12-12 04:30:39 -0800 | [diff] [blame] | 1136 | raise |
| 1137 | |
Matus Fabian | 6fa74c6 | 2017-06-05 05:55:48 -0700 | [diff] [blame] | 1138 | def test_hairpinning2(self): |
| 1139 | """ SNAT hairpinning - 1:1 NAT""" |
| 1140 | |
| 1141 | server1_nat_ip = "10.0.0.10" |
| 1142 | server2_nat_ip = "10.0.0.11" |
| 1143 | host = self.pg0.remote_hosts[0] |
| 1144 | server1 = self.pg0.remote_hosts[1] |
| 1145 | server2 = self.pg0.remote_hosts[2] |
| 1146 | server_tcp_port = 22 |
| 1147 | server_udp_port = 20 |
| 1148 | |
| 1149 | self.snat_add_address(self.snat_addr) |
| 1150 | self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index) |
| 1151 | self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index, |
| 1152 | is_inside=0) |
| 1153 | |
| 1154 | # add static mapping for servers |
| 1155 | self.snat_add_static_mapping(server1.ip4, server1_nat_ip) |
| 1156 | self.snat_add_static_mapping(server2.ip4, server2_nat_ip) |
| 1157 | |
| 1158 | # host to server1 |
| 1159 | pkts = [] |
| 1160 | p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / |
| 1161 | IP(src=host.ip4, dst=server1_nat_ip) / |
| 1162 | TCP(sport=self.tcp_port_in, dport=server_tcp_port)) |
| 1163 | pkts.append(p) |
| 1164 | p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / |
| 1165 | IP(src=host.ip4, dst=server1_nat_ip) / |
| 1166 | UDP(sport=self.udp_port_in, dport=server_udp_port)) |
| 1167 | pkts.append(p) |
| 1168 | p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / |
| 1169 | IP(src=host.ip4, dst=server1_nat_ip) / |
| 1170 | ICMP(id=self.icmp_id_in, type='echo-request')) |
| 1171 | pkts.append(p) |
| 1172 | self.pg0.add_stream(pkts) |
| 1173 | self.pg_enable_capture(self.pg_interfaces) |
| 1174 | self.pg_start() |
| 1175 | capture = self.pg0.get_capture(len(pkts)) |
| 1176 | for packet in capture: |
| 1177 | try: |
| 1178 | self.assertEqual(packet[IP].src, self.snat_addr) |
| 1179 | self.assertEqual(packet[IP].dst, server1.ip4) |
| 1180 | if packet.haslayer(TCP): |
| 1181 | self.assertNotEqual(packet[TCP].sport, self.tcp_port_in) |
| 1182 | self.assertEqual(packet[TCP].dport, server_tcp_port) |
| 1183 | self.tcp_port_out = packet[TCP].sport |
| 1184 | elif packet.haslayer(UDP): |
| 1185 | self.assertNotEqual(packet[UDP].sport, self.udp_port_in) |
| 1186 | self.assertEqual(packet[UDP].dport, server_udp_port) |
| 1187 | self.udp_port_out = packet[UDP].sport |
| 1188 | else: |
| 1189 | self.assertNotEqual(packet[ICMP].id, self.icmp_id_in) |
| 1190 | self.icmp_id_out = packet[ICMP].id |
| 1191 | except: |
| 1192 | self.logger.error(ppp("Unexpected or invalid packet:", packet)) |
| 1193 | raise |
| 1194 | |
| 1195 | # server1 to host |
| 1196 | pkts = [] |
| 1197 | p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / |
| 1198 | IP(src=server1.ip4, dst=self.snat_addr) / |
| 1199 | TCP(sport=server_tcp_port, dport=self.tcp_port_out)) |
| 1200 | pkts.append(p) |
| 1201 | p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / |
| 1202 | IP(src=server1.ip4, dst=self.snat_addr) / |
| 1203 | UDP(sport=server_udp_port, dport=self.udp_port_out)) |
| 1204 | pkts.append(p) |
| 1205 | p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / |
| 1206 | IP(src=server1.ip4, dst=self.snat_addr) / |
| 1207 | ICMP(id=self.icmp_id_out, type='echo-reply')) |
| 1208 | pkts.append(p) |
| 1209 | self.pg0.add_stream(pkts) |
| 1210 | self.pg_enable_capture(self.pg_interfaces) |
| 1211 | self.pg_start() |
| 1212 | capture = self.pg0.get_capture(len(pkts)) |
| 1213 | for packet in capture: |
| 1214 | try: |
| 1215 | self.assertEqual(packet[IP].src, server1_nat_ip) |
| 1216 | self.assertEqual(packet[IP].dst, host.ip4) |
| 1217 | if packet.haslayer(TCP): |
| 1218 | self.assertEqual(packet[TCP].dport, self.tcp_port_in) |
| 1219 | self.assertEqual(packet[TCP].sport, server_tcp_port) |
| 1220 | elif packet.haslayer(UDP): |
| 1221 | self.assertEqual(packet[UDP].dport, self.udp_port_in) |
| 1222 | self.assertEqual(packet[UDP].sport, server_udp_port) |
| 1223 | else: |
| 1224 | self.assertEqual(packet[ICMP].id, self.icmp_id_in) |
| 1225 | except: |
| 1226 | self.logger.error(ppp("Unexpected or invalid packet:", packet)) |
| 1227 | raise |
| 1228 | |
| 1229 | # server2 to server1 |
| 1230 | pkts = [] |
| 1231 | p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / |
| 1232 | IP(src=server2.ip4, dst=server1_nat_ip) / |
| 1233 | TCP(sport=self.tcp_port_in, dport=server_tcp_port)) |
| 1234 | pkts.append(p) |
| 1235 | p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / |
| 1236 | IP(src=server2.ip4, dst=server1_nat_ip) / |
| 1237 | UDP(sport=self.udp_port_in, dport=server_udp_port)) |
| 1238 | pkts.append(p) |
| 1239 | p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / |
| 1240 | IP(src=server2.ip4, dst=server1_nat_ip) / |
| 1241 | ICMP(id=self.icmp_id_in, type='echo-request')) |
| 1242 | pkts.append(p) |
| 1243 | self.pg0.add_stream(pkts) |
| 1244 | self.pg_enable_capture(self.pg_interfaces) |
| 1245 | self.pg_start() |
| 1246 | capture = self.pg0.get_capture(len(pkts)) |
| 1247 | for packet in capture: |
| 1248 | try: |
| 1249 | self.assertEqual(packet[IP].src, server2_nat_ip) |
| 1250 | self.assertEqual(packet[IP].dst, server1.ip4) |
| 1251 | if packet.haslayer(TCP): |
| 1252 | self.assertEqual(packet[TCP].sport, self.tcp_port_in) |
| 1253 | self.assertEqual(packet[TCP].dport, server_tcp_port) |
| 1254 | self.tcp_port_out = packet[TCP].sport |
| 1255 | elif packet.haslayer(UDP): |
| 1256 | self.assertEqual(packet[UDP].sport, self.udp_port_in) |
| 1257 | self.assertEqual(packet[UDP].dport, server_udp_port) |
| 1258 | self.udp_port_out = packet[UDP].sport |
| 1259 | else: |
| 1260 | self.assertEqual(packet[ICMP].id, self.icmp_id_in) |
| 1261 | self.icmp_id_out = packet[ICMP].id |
| 1262 | except: |
| 1263 | self.logger.error(ppp("Unexpected or invalid packet:", packet)) |
| 1264 | raise |
| 1265 | |
| 1266 | # server1 to server2 |
| 1267 | pkts = [] |
| 1268 | p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / |
| 1269 | IP(src=server1.ip4, dst=server2_nat_ip) / |
| 1270 | TCP(sport=server_tcp_port, dport=self.tcp_port_out)) |
| 1271 | pkts.append(p) |
| 1272 | p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / |
| 1273 | IP(src=server1.ip4, dst=server2_nat_ip) / |
| 1274 | UDP(sport=server_udp_port, dport=self.udp_port_out)) |
| 1275 | pkts.append(p) |
| 1276 | p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / |
| 1277 | IP(src=server1.ip4, dst=server2_nat_ip) / |
| 1278 | ICMP(id=self.icmp_id_out, type='echo-reply')) |
| 1279 | pkts.append(p) |
| 1280 | self.pg0.add_stream(pkts) |
| 1281 | self.pg_enable_capture(self.pg_interfaces) |
| 1282 | self.pg_start() |
| 1283 | capture = self.pg0.get_capture(len(pkts)) |
| 1284 | for packet in capture: |
| 1285 | try: |
| 1286 | self.assertEqual(packet[IP].src, server1_nat_ip) |
| 1287 | self.assertEqual(packet[IP].dst, server2.ip4) |
| 1288 | if packet.haslayer(TCP): |
| 1289 | self.assertEqual(packet[TCP].dport, self.tcp_port_in) |
| 1290 | self.assertEqual(packet[TCP].sport, server_tcp_port) |
| 1291 | elif packet.haslayer(UDP): |
| 1292 | self.assertEqual(packet[UDP].dport, self.udp_port_in) |
| 1293 | self.assertEqual(packet[UDP].sport, server_udp_port) |
| 1294 | else: |
| 1295 | self.assertEqual(packet[ICMP].id, self.icmp_id_in) |
| 1296 | except: |
| 1297 | self.logger.error(ppp("Unexpected or invalid packet:", packet)) |
| 1298 | raise |
| 1299 | |
Matus Fabian | 9902fcd | 2016-12-21 23:58:46 -0800 | [diff] [blame] | 1300 | def test_max_translations_per_user(self): |
| 1301 | """ MAX translations per user - recycle the least recently used """ |
| 1302 | |
| 1303 | self.snat_add_address(self.snat_addr) |
| 1304 | self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index) |
| 1305 | self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index, |
| 1306 | is_inside=0) |
| 1307 | |
| 1308 | # get maximum number of translations per user |
| 1309 | snat_config = self.vapi.snat_show_config() |
| 1310 | |
| 1311 | # send more than maximum number of translations per user packets |
| 1312 | pkts_num = snat_config.max_translations_per_user + 5 |
| 1313 | pkts = [] |
| 1314 | for port in range(0, pkts_num): |
| 1315 | p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / |
| 1316 | IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) / |
| 1317 | TCP(sport=1025 + port)) |
| 1318 | pkts.append(p) |
| 1319 | self.pg0.add_stream(pkts) |
| 1320 | self.pg_enable_capture(self.pg_interfaces) |
| 1321 | self.pg_start() |
| 1322 | |
| 1323 | # verify number of translated packet |
Klement Sekera | dab231a | 2016-12-21 08:50:14 +0100 | [diff] [blame] | 1324 | self.pg1.get_capture(pkts_num) |
Matus Fabian | 9902fcd | 2016-12-21 23:58:46 -0800 | [diff] [blame] | 1325 | |
Matus Fabian | 8bf68e8 | 2017-01-12 04:24:35 -0800 | [diff] [blame] | 1326 | def test_interface_addr(self): |
| 1327 | """ Acquire SNAT addresses from interface """ |
| 1328 | self.vapi.snat_add_interface_addr(self.pg7.sw_if_index) |
| 1329 | |
| 1330 | # no address in NAT pool |
| 1331 | adresses = self.vapi.snat_address_dump() |
| 1332 | self.assertEqual(0, len(adresses)) |
| 1333 | |
| 1334 | # configure interface address and check NAT address pool |
| 1335 | self.pg7.config_ip4() |
| 1336 | adresses = self.vapi.snat_address_dump() |
| 1337 | self.assertEqual(1, len(adresses)) |
Matus Fabian | 36532bd | 2017-01-23 23:42:28 -0800 | [diff] [blame] | 1338 | self.assertEqual(adresses[0].ip_address[0:4], self.pg7.local_ip4n) |
Matus Fabian | 8bf68e8 | 2017-01-12 04:24:35 -0800 | [diff] [blame] | 1339 | |
| 1340 | # remove interface address and check NAT address pool |
| 1341 | self.pg7.unconfig_ip4() |
| 1342 | adresses = self.vapi.snat_address_dump() |
| 1343 | self.assertEqual(0, len(adresses)) |
| 1344 | |
Matus Fabian | 36532bd | 2017-01-23 23:42:28 -0800 | [diff] [blame] | 1345 | def test_interface_addr_static_mapping(self): |
| 1346 | """ Static mapping with addresses from interface """ |
| 1347 | self.vapi.snat_add_interface_addr(self.pg7.sw_if_index) |
| 1348 | self.snat_add_static_mapping('1.2.3.4', |
| 1349 | external_sw_if_index=self.pg7.sw_if_index) |
| 1350 | |
Matus Fabian | e22e546 | 2017-02-14 23:33:43 -0800 | [diff] [blame] | 1351 | # static mappings with external interface |
Matus Fabian | 36532bd | 2017-01-23 23:42:28 -0800 | [diff] [blame] | 1352 | static_mappings = self.vapi.snat_static_mapping_dump() |
Matus Fabian | e22e546 | 2017-02-14 23:33:43 -0800 | [diff] [blame] | 1353 | self.assertEqual(1, len(static_mappings)) |
| 1354 | self.assertEqual(self.pg7.sw_if_index, |
| 1355 | static_mappings[0].external_sw_if_index) |
Matus Fabian | 36532bd | 2017-01-23 23:42:28 -0800 | [diff] [blame] | 1356 | |
| 1357 | # configure interface address and check static mappings |
| 1358 | self.pg7.config_ip4() |
| 1359 | static_mappings = self.vapi.snat_static_mapping_dump() |
| 1360 | self.assertEqual(1, len(static_mappings)) |
| 1361 | self.assertEqual(static_mappings[0].external_ip_address[0:4], |
| 1362 | self.pg7.local_ip4n) |
Matus Fabian | e22e546 | 2017-02-14 23:33:43 -0800 | [diff] [blame] | 1363 | self.assertEqual(0xFFFFFFFF, static_mappings[0].external_sw_if_index) |
Matus Fabian | 36532bd | 2017-01-23 23:42:28 -0800 | [diff] [blame] | 1364 | |
| 1365 | # remove interface address and check static mappings |
| 1366 | self.pg7.unconfig_ip4() |
| 1367 | static_mappings = self.vapi.snat_static_mapping_dump() |
| 1368 | self.assertEqual(0, len(static_mappings)) |
| 1369 | |
Matus Fabian | eea28d7 | 2017-01-13 04:15:54 -0800 | [diff] [blame] | 1370 | def test_ipfix_nat44_sess(self): |
| 1371 | """ S-NAT IPFIX logging NAT44 session created/delted """ |
Matus Fabian | 6631e9c | 2017-05-24 01:52:20 -0700 | [diff] [blame] | 1372 | self.ipfix_domain_id = 10 |
| 1373 | self.ipfix_src_port = 20202 |
| 1374 | colector_port = 30303 |
| 1375 | bind_layers(UDP, IPFIX, dport=30303) |
Matus Fabian | eea28d7 | 2017-01-13 04:15:54 -0800 | [diff] [blame] | 1376 | self.snat_add_address(self.snat_addr) |
| 1377 | self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index) |
| 1378 | self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index, |
| 1379 | is_inside=0) |
| 1380 | self.vapi.set_ipfix_exporter(collector_address=self.pg3.remote_ip4n, |
| 1381 | src_address=self.pg3.local_ip4n, |
| 1382 | path_mtu=512, |
Matus Fabian | 6631e9c | 2017-05-24 01:52:20 -0700 | [diff] [blame] | 1383 | template_interval=10, |
| 1384 | collector_port=colector_port) |
| 1385 | self.vapi.snat_ipfix(domain_id=self.ipfix_domain_id, |
| 1386 | src_port=self.ipfix_src_port) |
Matus Fabian | eea28d7 | 2017-01-13 04:15:54 -0800 | [diff] [blame] | 1387 | |
| 1388 | pkts = self.create_stream_in(self.pg0, self.pg1) |
| 1389 | self.pg0.add_stream(pkts) |
| 1390 | self.pg_enable_capture(self.pg_interfaces) |
| 1391 | self.pg_start() |
| 1392 | capture = self.pg1.get_capture(len(pkts)) |
| 1393 | self.verify_capture_out(capture) |
| 1394 | self.snat_add_address(self.snat_addr, is_add=0) |
| 1395 | self.vapi.cli("ipfix flush") # FIXME this should be an API call |
| 1396 | capture = self.pg3.get_capture(3) |
| 1397 | ipfix = IPFIXDecoder() |
| 1398 | # first load template |
| 1399 | for p in capture: |
| 1400 | self.assertTrue(p.haslayer(IPFIX)) |
Matus Fabian | 6631e9c | 2017-05-24 01:52:20 -0700 | [diff] [blame] | 1401 | self.assertEqual(p[IP].src, self.pg3.local_ip4) |
| 1402 | self.assertEqual(p[IP].dst, self.pg3.remote_ip4) |
| 1403 | self.assertEqual(p[UDP].sport, self.ipfix_src_port) |
| 1404 | self.assertEqual(p[UDP].dport, colector_port) |
| 1405 | self.assertEqual(p[IPFIX].observationDomainID, |
| 1406 | self.ipfix_domain_id) |
Matus Fabian | eea28d7 | 2017-01-13 04:15:54 -0800 | [diff] [blame] | 1407 | if p.haslayer(Template): |
| 1408 | ipfix.add_template(p.getlayer(Template)) |
| 1409 | # verify events in data set |
| 1410 | for p in capture: |
| 1411 | if p.haslayer(Data): |
| 1412 | data = ipfix.decode_data_set(p.getlayer(Set)) |
| 1413 | self.verify_ipfix_nat44_ses(data) |
| 1414 | |
| 1415 | def test_ipfix_addr_exhausted(self): |
| 1416 | """ S-NAT IPFIX logging NAT addresses exhausted """ |
| 1417 | self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index) |
| 1418 | self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index, |
| 1419 | is_inside=0) |
| 1420 | self.vapi.set_ipfix_exporter(collector_address=self.pg3.remote_ip4n, |
| 1421 | src_address=self.pg3.local_ip4n, |
| 1422 | path_mtu=512, |
| 1423 | template_interval=10) |
Matus Fabian | 6631e9c | 2017-05-24 01:52:20 -0700 | [diff] [blame] | 1424 | self.vapi.snat_ipfix(domain_id=self.ipfix_domain_id, |
| 1425 | src_port=self.ipfix_src_port) |
Matus Fabian | eea28d7 | 2017-01-13 04:15:54 -0800 | [diff] [blame] | 1426 | |
| 1427 | p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / |
| 1428 | IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) / |
| 1429 | TCP(sport=3025)) |
| 1430 | self.pg0.add_stream(p) |
| 1431 | self.pg_enable_capture(self.pg_interfaces) |
| 1432 | self.pg_start() |
| 1433 | capture = self.pg1.get_capture(0) |
| 1434 | self.vapi.cli("ipfix flush") # FIXME this should be an API call |
| 1435 | capture = self.pg3.get_capture(3) |
| 1436 | ipfix = IPFIXDecoder() |
| 1437 | # first load template |
| 1438 | for p in capture: |
| 1439 | self.assertTrue(p.haslayer(IPFIX)) |
Matus Fabian | 6631e9c | 2017-05-24 01:52:20 -0700 | [diff] [blame] | 1440 | self.assertEqual(p[IP].src, self.pg3.local_ip4) |
| 1441 | self.assertEqual(p[IP].dst, self.pg3.remote_ip4) |
| 1442 | self.assertEqual(p[UDP].sport, self.ipfix_src_port) |
| 1443 | self.assertEqual(p[UDP].dport, 4739) |
| 1444 | self.assertEqual(p[IPFIX].observationDomainID, |
| 1445 | self.ipfix_domain_id) |
Matus Fabian | eea28d7 | 2017-01-13 04:15:54 -0800 | [diff] [blame] | 1446 | if p.haslayer(Template): |
| 1447 | ipfix.add_template(p.getlayer(Template)) |
| 1448 | # verify events in data set |
| 1449 | for p in capture: |
| 1450 | if p.haslayer(Data): |
| 1451 | data = ipfix.decode_data_set(p.getlayer(Set)) |
| 1452 | self.verify_ipfix_addr_exhausted(data) |
| 1453 | |
Matus Fabian | e1ae29a | 2017-01-27 00:47:58 -0800 | [diff] [blame] | 1454 | def test_pool_addr_fib(self): |
| 1455 | """ S-NAT add pool addresses to FIB """ |
| 1456 | static_addr = '10.0.0.10' |
| 1457 | self.snat_add_address(self.snat_addr) |
| 1458 | self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index) |
| 1459 | self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index, |
| 1460 | is_inside=0) |
| 1461 | self.snat_add_static_mapping(self.pg0.remote_ip4, static_addr) |
| 1462 | |
| 1463 | # SNAT address |
| 1464 | p = (Ether(src=self.pg1.remote_mac, dst='ff:ff:ff:ff:ff:ff') / |
| 1465 | ARP(op=ARP.who_has, pdst=self.snat_addr, |
| 1466 | psrc=self.pg1.remote_ip4, hwsrc=self.pg1.remote_mac)) |
| 1467 | self.pg1.add_stream(p) |
| 1468 | self.pg_enable_capture(self.pg_interfaces) |
| 1469 | self.pg_start() |
| 1470 | capture = self.pg1.get_capture(1) |
| 1471 | self.assertTrue(capture[0].haslayer(ARP)) |
| 1472 | self.assertTrue(capture[0][ARP].op, ARP.is_at) |
| 1473 | |
| 1474 | # 1:1 NAT address |
| 1475 | p = (Ether(src=self.pg1.remote_mac, dst='ff:ff:ff:ff:ff:ff') / |
| 1476 | ARP(op=ARP.who_has, pdst=static_addr, |
| 1477 | psrc=self.pg1.remote_ip4, hwsrc=self.pg1.remote_mac)) |
| 1478 | self.pg1.add_stream(p) |
| 1479 | self.pg_enable_capture(self.pg_interfaces) |
| 1480 | self.pg_start() |
| 1481 | capture = self.pg1.get_capture(1) |
| 1482 | self.assertTrue(capture[0].haslayer(ARP)) |
| 1483 | self.assertTrue(capture[0][ARP].op, ARP.is_at) |
| 1484 | |
| 1485 | # send ARP to non-SNAT interface |
| 1486 | p = (Ether(src=self.pg2.remote_mac, dst='ff:ff:ff:ff:ff:ff') / |
| 1487 | ARP(op=ARP.who_has, pdst=self.snat_addr, |
| 1488 | psrc=self.pg2.remote_ip4, hwsrc=self.pg2.remote_mac)) |
| 1489 | self.pg2.add_stream(p) |
| 1490 | self.pg_enable_capture(self.pg_interfaces) |
| 1491 | self.pg_start() |
| 1492 | capture = self.pg1.get_capture(0) |
| 1493 | |
| 1494 | # remove addresses and verify |
| 1495 | self.snat_add_address(self.snat_addr, is_add=0) |
| 1496 | self.snat_add_static_mapping(self.pg0.remote_ip4, static_addr, |
| 1497 | is_add=0) |
| 1498 | |
| 1499 | p = (Ether(src=self.pg1.remote_mac, dst='ff:ff:ff:ff:ff:ff') / |
| 1500 | ARP(op=ARP.who_has, pdst=self.snat_addr, |
| 1501 | psrc=self.pg1.remote_ip4, hwsrc=self.pg1.remote_mac)) |
| 1502 | self.pg1.add_stream(p) |
| 1503 | self.pg_enable_capture(self.pg_interfaces) |
| 1504 | self.pg_start() |
| 1505 | capture = self.pg1.get_capture(0) |
| 1506 | |
| 1507 | p = (Ether(src=self.pg1.remote_mac, dst='ff:ff:ff:ff:ff:ff') / |
| 1508 | ARP(op=ARP.who_has, pdst=static_addr, |
| 1509 | psrc=self.pg1.remote_ip4, hwsrc=self.pg1.remote_mac)) |
| 1510 | self.pg1.add_stream(p) |
| 1511 | self.pg_enable_capture(self.pg_interfaces) |
| 1512 | self.pg_start() |
| 1513 | capture = self.pg1.get_capture(0) |
| 1514 | |
Juraj Sloboda | eab38d9 | 2017-03-06 19:55:21 -0800 | [diff] [blame] | 1515 | def test_vrf_mode(self): |
| 1516 | """ S-NAT tenant VRF aware address pool mode """ |
| 1517 | |
| 1518 | vrf_id1 = 1 |
| 1519 | vrf_id2 = 2 |
| 1520 | nat_ip1 = "10.0.0.10" |
| 1521 | nat_ip2 = "10.0.0.11" |
| 1522 | |
| 1523 | self.pg0.unconfig_ip4() |
| 1524 | self.pg1.unconfig_ip4() |
| 1525 | self.pg0.set_table_ip4(vrf_id1) |
| 1526 | self.pg1.set_table_ip4(vrf_id2) |
| 1527 | self.pg0.config_ip4() |
| 1528 | self.pg1.config_ip4() |
| 1529 | |
| 1530 | self.snat_add_address(nat_ip1, vrf_id=vrf_id1) |
| 1531 | self.snat_add_address(nat_ip2, vrf_id=vrf_id2) |
| 1532 | self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index) |
| 1533 | self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index) |
| 1534 | self.vapi.snat_interface_add_del_feature(self.pg2.sw_if_index, |
| 1535 | is_inside=0) |
| 1536 | |
| 1537 | # first VRF |
| 1538 | pkts = self.create_stream_in(self.pg0, self.pg2) |
| 1539 | self.pg0.add_stream(pkts) |
| 1540 | self.pg_enable_capture(self.pg_interfaces) |
| 1541 | self.pg_start() |
| 1542 | capture = self.pg2.get_capture(len(pkts)) |
| 1543 | self.verify_capture_out(capture, nat_ip1) |
| 1544 | |
| 1545 | # second VRF |
| 1546 | pkts = self.create_stream_in(self.pg1, self.pg2) |
| 1547 | self.pg1.add_stream(pkts) |
| 1548 | self.pg_enable_capture(self.pg_interfaces) |
| 1549 | self.pg_start() |
| 1550 | capture = self.pg2.get_capture(len(pkts)) |
| 1551 | self.verify_capture_out(capture, nat_ip2) |
| 1552 | |
| 1553 | def test_vrf_feature_independent(self): |
| 1554 | """ S-NAT tenant VRF independent address pool mode """ |
| 1555 | |
| 1556 | nat_ip1 = "10.0.0.10" |
| 1557 | nat_ip2 = "10.0.0.11" |
| 1558 | |
| 1559 | self.snat_add_address(nat_ip1) |
| 1560 | self.snat_add_address(nat_ip2) |
| 1561 | self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index) |
| 1562 | self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index) |
| 1563 | self.vapi.snat_interface_add_del_feature(self.pg2.sw_if_index, |
| 1564 | is_inside=0) |
| 1565 | |
| 1566 | # first VRF |
| 1567 | pkts = self.create_stream_in(self.pg0, self.pg2) |
| 1568 | self.pg0.add_stream(pkts) |
| 1569 | self.pg_enable_capture(self.pg_interfaces) |
| 1570 | self.pg_start() |
| 1571 | capture = self.pg2.get_capture(len(pkts)) |
| 1572 | self.verify_capture_out(capture, nat_ip1) |
| 1573 | |
| 1574 | # second VRF |
| 1575 | pkts = self.create_stream_in(self.pg1, self.pg2) |
| 1576 | self.pg1.add_stream(pkts) |
| 1577 | self.pg_enable_capture(self.pg_interfaces) |
| 1578 | self.pg_start() |
| 1579 | capture = self.pg2.get_capture(len(pkts)) |
| 1580 | self.verify_capture_out(capture, nat_ip1) |
| 1581 | |
Martin Gálik | 406eb1d | 2017-05-04 04:35:04 -0700 | [diff] [blame] | 1582 | def test_dynamic_ipless_interfaces(self): |
| 1583 | """ SNAT interfaces without configured ip dynamic map """ |
| 1584 | |
| 1585 | self.vapi.ip_neighbor_add_del(self.pg7.sw_if_index, |
| 1586 | self.pg7.remote_mac, |
| 1587 | self.pg7.remote_ip4n, |
| 1588 | is_static=1) |
| 1589 | self.vapi.ip_neighbor_add_del(self.pg8.sw_if_index, |
| 1590 | self.pg8.remote_mac, |
| 1591 | self.pg8.remote_ip4n, |
| 1592 | is_static=1) |
| 1593 | |
| 1594 | self.vapi.ip_add_del_route(dst_address=self.pg7.remote_ip4n, |
| 1595 | dst_address_length=32, |
| 1596 | next_hop_address=self.pg7.remote_ip4n, |
| 1597 | next_hop_sw_if_index=self.pg7.sw_if_index) |
| 1598 | self.vapi.ip_add_del_route(dst_address=self.pg8.remote_ip4n, |
| 1599 | dst_address_length=32, |
| 1600 | next_hop_address=self.pg8.remote_ip4n, |
| 1601 | next_hop_sw_if_index=self.pg8.sw_if_index) |
| 1602 | |
| 1603 | self.snat_add_address(self.snat_addr) |
| 1604 | self.vapi.snat_interface_add_del_feature(self.pg7.sw_if_index) |
| 1605 | self.vapi.snat_interface_add_del_feature(self.pg8.sw_if_index, |
| 1606 | is_inside=0) |
| 1607 | |
| 1608 | # in2out |
| 1609 | pkts = self.create_stream_in(self.pg7, self.pg8) |
| 1610 | self.pg7.add_stream(pkts) |
| 1611 | self.pg_enable_capture(self.pg_interfaces) |
| 1612 | self.pg_start() |
| 1613 | capture = self.pg8.get_capture(len(pkts)) |
| 1614 | self.verify_capture_out(capture) |
| 1615 | |
| 1616 | # out2in |
| 1617 | pkts = self.create_stream_out(self.pg8, self.snat_addr) |
| 1618 | self.pg8.add_stream(pkts) |
| 1619 | self.pg_enable_capture(self.pg_interfaces) |
| 1620 | self.pg_start() |
| 1621 | capture = self.pg7.get_capture(len(pkts)) |
| 1622 | self.verify_capture_in(capture, self.pg7) |
| 1623 | |
| 1624 | def test_static_ipless_interfaces(self): |
| 1625 | """ SNAT 1:1 NAT interfaces without configured ip """ |
| 1626 | |
| 1627 | self.vapi.ip_neighbor_add_del(self.pg7.sw_if_index, |
| 1628 | self.pg7.remote_mac, |
| 1629 | self.pg7.remote_ip4n, |
| 1630 | is_static=1) |
| 1631 | self.vapi.ip_neighbor_add_del(self.pg8.sw_if_index, |
| 1632 | self.pg8.remote_mac, |
| 1633 | self.pg8.remote_ip4n, |
| 1634 | is_static=1) |
| 1635 | |
| 1636 | self.vapi.ip_add_del_route(dst_address=self.pg7.remote_ip4n, |
| 1637 | dst_address_length=32, |
| 1638 | next_hop_address=self.pg7.remote_ip4n, |
| 1639 | next_hop_sw_if_index=self.pg7.sw_if_index) |
| 1640 | self.vapi.ip_add_del_route(dst_address=self.pg8.remote_ip4n, |
| 1641 | dst_address_length=32, |
| 1642 | next_hop_address=self.pg8.remote_ip4n, |
| 1643 | next_hop_sw_if_index=self.pg8.sw_if_index) |
| 1644 | |
| 1645 | self.snat_add_static_mapping(self.pg7.remote_ip4, self.snat_addr) |
| 1646 | self.vapi.snat_interface_add_del_feature(self.pg7.sw_if_index) |
| 1647 | self.vapi.snat_interface_add_del_feature(self.pg8.sw_if_index, |
| 1648 | is_inside=0) |
| 1649 | |
| 1650 | # out2in |
| 1651 | pkts = self.create_stream_out(self.pg8) |
| 1652 | self.pg8.add_stream(pkts) |
| 1653 | self.pg_enable_capture(self.pg_interfaces) |
| 1654 | self.pg_start() |
| 1655 | capture = self.pg7.get_capture(len(pkts)) |
| 1656 | self.verify_capture_in(capture, self.pg7) |
| 1657 | |
| 1658 | # in2out |
| 1659 | pkts = self.create_stream_in(self.pg7, self.pg8) |
| 1660 | self.pg7.add_stream(pkts) |
| 1661 | self.pg_enable_capture(self.pg_interfaces) |
| 1662 | self.pg_start() |
| 1663 | capture = self.pg8.get_capture(len(pkts)) |
| 1664 | self.verify_capture_out(capture, self.snat_addr, True) |
| 1665 | |
| 1666 | def test_static_with_port_ipless_interfaces(self): |
| 1667 | """ SNAT 1:1 NAT with port interfaces without configured ip """ |
| 1668 | |
| 1669 | self.tcp_port_out = 30606 |
| 1670 | self.udp_port_out = 30607 |
| 1671 | self.icmp_id_out = 30608 |
| 1672 | |
| 1673 | self.vapi.ip_neighbor_add_del(self.pg7.sw_if_index, |
| 1674 | self.pg7.remote_mac, |
| 1675 | self.pg7.remote_ip4n, |
| 1676 | is_static=1) |
| 1677 | self.vapi.ip_neighbor_add_del(self.pg8.sw_if_index, |
| 1678 | self.pg8.remote_mac, |
| 1679 | self.pg8.remote_ip4n, |
| 1680 | is_static=1) |
| 1681 | |
| 1682 | self.vapi.ip_add_del_route(dst_address=self.pg7.remote_ip4n, |
| 1683 | dst_address_length=32, |
| 1684 | next_hop_address=self.pg7.remote_ip4n, |
| 1685 | next_hop_sw_if_index=self.pg7.sw_if_index) |
| 1686 | self.vapi.ip_add_del_route(dst_address=self.pg8.remote_ip4n, |
| 1687 | dst_address_length=32, |
| 1688 | next_hop_address=self.pg8.remote_ip4n, |
| 1689 | next_hop_sw_if_index=self.pg8.sw_if_index) |
| 1690 | |
| 1691 | self.snat_add_address(self.snat_addr) |
| 1692 | self.snat_add_static_mapping(self.pg7.remote_ip4, self.snat_addr, |
| 1693 | self.tcp_port_in, self.tcp_port_out, |
| 1694 | proto=IP_PROTOS.tcp) |
| 1695 | self.snat_add_static_mapping(self.pg7.remote_ip4, self.snat_addr, |
| 1696 | self.udp_port_in, self.udp_port_out, |
| 1697 | proto=IP_PROTOS.udp) |
| 1698 | self.snat_add_static_mapping(self.pg7.remote_ip4, self.snat_addr, |
| 1699 | self.icmp_id_in, self.icmp_id_out, |
| 1700 | proto=IP_PROTOS.icmp) |
| 1701 | self.vapi.snat_interface_add_del_feature(self.pg7.sw_if_index) |
| 1702 | self.vapi.snat_interface_add_del_feature(self.pg8.sw_if_index, |
| 1703 | is_inside=0) |
| 1704 | |
| 1705 | # out2in |
| 1706 | pkts = self.create_stream_out(self.pg8) |
| 1707 | self.pg8.add_stream(pkts) |
| 1708 | self.pg_enable_capture(self.pg_interfaces) |
| 1709 | self.pg_start() |
| 1710 | capture = self.pg7.get_capture(len(pkts)) |
| 1711 | self.verify_capture_in(capture, self.pg7) |
| 1712 | |
| 1713 | # in2out |
| 1714 | pkts = self.create_stream_in(self.pg7, self.pg8) |
| 1715 | self.pg7.add_stream(pkts) |
| 1716 | self.pg_enable_capture(self.pg_interfaces) |
| 1717 | self.pg_start() |
| 1718 | capture = self.pg8.get_capture(len(pkts)) |
| 1719 | self.verify_capture_out(capture) |
| 1720 | |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 1721 | def tearDown(self): |
| 1722 | super(TestSNAT, self).tearDown() |
| 1723 | if not self.vpp_dead: |
| 1724 | self.logger.info(self.vapi.cli("show snat verbose")) |
| 1725 | self.clear_snat() |
| 1726 | |
Matus Fabian | eea28d7 | 2017-01-13 04:15:54 -0800 | [diff] [blame] | 1727 | |
Martin Gálik | d7f75cd | 2017-03-27 06:02:47 -0700 | [diff] [blame] | 1728 | class TestDeterministicNAT(MethodHolder): |
Matus Fabian | 066f034 | 2017-02-10 03:48:01 -0800 | [diff] [blame] | 1729 | """ Deterministic NAT Test Cases """ |
| 1730 | |
| 1731 | @classmethod |
| 1732 | def setUpConstants(cls): |
| 1733 | super(TestDeterministicNAT, cls).setUpConstants() |
| 1734 | cls.vpp_cmdline.extend(["snat", "{", "deterministic", "}"]) |
| 1735 | |
| 1736 | @classmethod |
| 1737 | def setUpClass(cls): |
| 1738 | super(TestDeterministicNAT, cls).setUpClass() |
| 1739 | |
| 1740 | try: |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 1741 | cls.tcp_port_in = 6303 |
Martin Gálik | 9806eae | 2017-04-25 01:25:08 -0700 | [diff] [blame] | 1742 | cls.tcp_external_port = 6303 |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 1743 | cls.udp_port_in = 6304 |
Martin Gálik | 9806eae | 2017-04-25 01:25:08 -0700 | [diff] [blame] | 1744 | cls.udp_external_port = 6304 |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 1745 | cls.icmp_id_in = 6305 |
| 1746 | cls.snat_addr = '10.0.0.3' |
| 1747 | |
Matus Fabian | 2f2db1c | 2017-04-18 05:29:59 -0700 | [diff] [blame] | 1748 | cls.create_pg_interfaces(range(3)) |
Matus Fabian | 066f034 | 2017-02-10 03:48:01 -0800 | [diff] [blame] | 1749 | cls.interfaces = list(cls.pg_interfaces) |
| 1750 | |
| 1751 | for i in cls.interfaces: |
| 1752 | i.admin_up() |
| 1753 | i.config_ip4() |
| 1754 | i.resolve_arp() |
| 1755 | |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 1756 | cls.pg0.generate_remote_hosts(2) |
| 1757 | cls.pg0.configure_ipv4_neighbors() |
| 1758 | |
Matus Fabian | 066f034 | 2017-02-10 03:48:01 -0800 | [diff] [blame] | 1759 | except Exception: |
| 1760 | super(TestDeterministicNAT, cls).tearDownClass() |
| 1761 | raise |
| 1762 | |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 1763 | def create_stream_in(self, in_if, out_if, ttl=64): |
| 1764 | """ |
| 1765 | Create packet stream for inside network |
| 1766 | |
| 1767 | :param in_if: Inside interface |
| 1768 | :param out_if: Outside interface |
| 1769 | :param ttl: TTL of generated packets |
| 1770 | """ |
| 1771 | pkts = [] |
| 1772 | # TCP |
| 1773 | p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) / |
| 1774 | IP(src=in_if.remote_ip4, dst=out_if.remote_ip4, ttl=ttl) / |
Martin Gálik | 9806eae | 2017-04-25 01:25:08 -0700 | [diff] [blame] | 1775 | TCP(sport=self.tcp_port_in, dport=self.tcp_external_port)) |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 1776 | pkts.append(p) |
| 1777 | |
| 1778 | # UDP |
| 1779 | p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) / |
| 1780 | IP(src=in_if.remote_ip4, dst=out_if.remote_ip4, ttl=ttl) / |
Martin Gálik | 9806eae | 2017-04-25 01:25:08 -0700 | [diff] [blame] | 1781 | UDP(sport=self.udp_port_in, dport=self.udp_external_port)) |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 1782 | pkts.append(p) |
| 1783 | |
| 1784 | # ICMP |
| 1785 | p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) / |
| 1786 | IP(src=in_if.remote_ip4, dst=out_if.remote_ip4, ttl=ttl) / |
| 1787 | ICMP(id=self.icmp_id_in, type='echo-request')) |
| 1788 | pkts.append(p) |
| 1789 | |
| 1790 | return pkts |
| 1791 | |
| 1792 | def create_stream_out(self, out_if, dst_ip=None, ttl=64): |
| 1793 | """ |
| 1794 | Create packet stream for outside network |
| 1795 | |
| 1796 | :param out_if: Outside interface |
| 1797 | :param dst_ip: Destination IP address (Default use global SNAT address) |
| 1798 | :param ttl: TTL of generated packets |
| 1799 | """ |
| 1800 | if dst_ip is None: |
| 1801 | dst_ip = self.snat_addr |
| 1802 | pkts = [] |
| 1803 | # TCP |
| 1804 | p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) / |
| 1805 | IP(src=out_if.remote_ip4, dst=dst_ip, ttl=ttl) / |
Martin Gálik | 9806eae | 2017-04-25 01:25:08 -0700 | [diff] [blame] | 1806 | TCP(dport=self.tcp_port_out, sport=self.tcp_external_port)) |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 1807 | pkts.append(p) |
| 1808 | |
| 1809 | # UDP |
| 1810 | p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) / |
| 1811 | IP(src=out_if.remote_ip4, dst=dst_ip, ttl=ttl) / |
Martin Gálik | 9806eae | 2017-04-25 01:25:08 -0700 | [diff] [blame] | 1812 | UDP(dport=self.udp_port_out, sport=self.udp_external_port)) |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 1813 | pkts.append(p) |
| 1814 | |
| 1815 | # ICMP |
| 1816 | p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) / |
| 1817 | IP(src=out_if.remote_ip4, dst=dst_ip, ttl=ttl) / |
| 1818 | ICMP(id=self.icmp_external_id, type='echo-reply')) |
| 1819 | pkts.append(p) |
| 1820 | |
| 1821 | return pkts |
| 1822 | |
| 1823 | def verify_capture_out(self, capture, nat_ip=None, packet_num=3): |
| 1824 | """ |
| 1825 | Verify captured packets on outside network |
| 1826 | |
| 1827 | :param capture: Captured packets |
| 1828 | :param nat_ip: Translated IP address (Default use global SNAT address) |
| 1829 | :param same_port: Sorce port number is not translated (Default False) |
| 1830 | :param packet_num: Expected number of packets (Default 3) |
| 1831 | """ |
| 1832 | if nat_ip is None: |
| 1833 | nat_ip = self.snat_addr |
| 1834 | self.assertEqual(packet_num, len(capture)) |
| 1835 | for packet in capture: |
| 1836 | try: |
| 1837 | self.assertEqual(packet[IP].src, nat_ip) |
| 1838 | if packet.haslayer(TCP): |
Martin Gálik | 9806eae | 2017-04-25 01:25:08 -0700 | [diff] [blame] | 1839 | self.tcp_port_out = packet[TCP].sport |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 1840 | elif packet.haslayer(UDP): |
Martin Gálik | 9806eae | 2017-04-25 01:25:08 -0700 | [diff] [blame] | 1841 | self.udp_port_out = packet[UDP].sport |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 1842 | else: |
| 1843 | self.icmp_external_id = packet[ICMP].id |
| 1844 | except: |
| 1845 | self.logger.error(ppp("Unexpected or invalid packet " |
| 1846 | "(outside network):", packet)) |
| 1847 | raise |
| 1848 | |
| 1849 | def initiate_tcp_session(self, in_if, out_if): |
| 1850 | """ |
| 1851 | Initiates TCP session |
| 1852 | |
| 1853 | :param in_if: Inside interface |
| 1854 | :param out_if: Outside interface |
| 1855 | """ |
| 1856 | try: |
| 1857 | # SYN packet in->out |
| 1858 | p = (Ether(src=in_if.remote_mac, dst=in_if.local_mac) / |
| 1859 | IP(src=in_if.remote_ip4, dst=out_if.remote_ip4) / |
Martin Gálik | 9806eae | 2017-04-25 01:25:08 -0700 | [diff] [blame] | 1860 | TCP(sport=self.tcp_port_in, dport=self.tcp_external_port, |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 1861 | flags="S")) |
| 1862 | in_if.add_stream(p) |
| 1863 | self.pg_enable_capture(self.pg_interfaces) |
| 1864 | self.pg_start() |
| 1865 | capture = out_if.get_capture(1) |
| 1866 | p = capture[0] |
Martin Gálik | 9806eae | 2017-04-25 01:25:08 -0700 | [diff] [blame] | 1867 | self.tcp_port_out = p[TCP].sport |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 1868 | |
| 1869 | # SYN + ACK packet out->in |
| 1870 | p = (Ether(src=out_if.remote_mac, dst=out_if.local_mac) / |
| 1871 | IP(src=out_if.remote_ip4, dst=self.snat_addr) / |
Martin Gálik | 9806eae | 2017-04-25 01:25:08 -0700 | [diff] [blame] | 1872 | TCP(sport=self.tcp_external_port, dport=self.tcp_port_out, |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 1873 | flags="SA")) |
| 1874 | out_if.add_stream(p) |
| 1875 | self.pg_enable_capture(self.pg_interfaces) |
| 1876 | self.pg_start() |
| 1877 | in_if.get_capture(1) |
| 1878 | |
| 1879 | # ACK packet in->out |
| 1880 | p = (Ether(src=in_if.remote_mac, dst=in_if.local_mac) / |
| 1881 | IP(src=in_if.remote_ip4, dst=out_if.remote_ip4) / |
Martin Gálik | 9806eae | 2017-04-25 01:25:08 -0700 | [diff] [blame] | 1882 | TCP(sport=self.tcp_port_in, dport=self.tcp_external_port, |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 1883 | flags="A")) |
| 1884 | in_if.add_stream(p) |
| 1885 | self.pg_enable_capture(self.pg_interfaces) |
| 1886 | self.pg_start() |
| 1887 | out_if.get_capture(1) |
| 1888 | |
| 1889 | except: |
| 1890 | self.logger.error("TCP 3 way handshake failed") |
| 1891 | raise |
| 1892 | |
Matus Fabian | 2f2db1c | 2017-04-18 05:29:59 -0700 | [diff] [blame] | 1893 | def verify_ipfix_max_entries_per_user(self, data): |
| 1894 | """ |
| 1895 | Verify IPFIX maximum entries per user exceeded event |
| 1896 | |
| 1897 | :param data: Decoded IPFIX data records |
| 1898 | """ |
| 1899 | self.assertEqual(1, len(data)) |
| 1900 | record = data[0] |
| 1901 | # natEvent |
| 1902 | self.assertEqual(ord(record[230]), 13) |
| 1903 | # natQuotaExceededEvent |
| 1904 | self.assertEqual('\x03\x00\x00\x00', record[466]) |
| 1905 | # sourceIPv4Address |
| 1906 | self.assertEqual(self.pg0.remote_ip4n, record[8]) |
| 1907 | |
Matus Fabian | 066f034 | 2017-02-10 03:48:01 -0800 | [diff] [blame] | 1908 | def test_deterministic_mode(self): |
| 1909 | """ S-NAT run deterministic mode """ |
| 1910 | in_addr = '172.16.255.0' |
| 1911 | out_addr = '172.17.255.50' |
| 1912 | in_addr_t = '172.16.255.20' |
| 1913 | in_addr_n = socket.inet_aton(in_addr) |
| 1914 | out_addr_n = socket.inet_aton(out_addr) |
| 1915 | in_addr_t_n = socket.inet_aton(in_addr_t) |
| 1916 | in_plen = 24 |
| 1917 | out_plen = 32 |
| 1918 | |
| 1919 | snat_config = self.vapi.snat_show_config() |
| 1920 | self.assertEqual(1, snat_config.deterministic) |
| 1921 | |
| 1922 | self.vapi.snat_add_det_map(in_addr_n, in_plen, out_addr_n, out_plen) |
| 1923 | |
| 1924 | rep1 = self.vapi.snat_det_forward(in_addr_t_n) |
| 1925 | self.assertEqual(rep1.out_addr[:4], out_addr_n) |
| 1926 | rep2 = self.vapi.snat_det_reverse(out_addr_n, rep1.out_port_hi) |
| 1927 | self.assertEqual(rep2.in_addr[:4], in_addr_t_n) |
| 1928 | |
Martin | 17a75cb | 2017-03-08 05:53:20 -0800 | [diff] [blame] | 1929 | deterministic_mappings = self.vapi.snat_det_map_dump() |
| 1930 | self.assertEqual(len(deterministic_mappings), 1) |
| 1931 | dsm = deterministic_mappings[0] |
| 1932 | self.assertEqual(in_addr_n, dsm.in_addr[:4]) |
| 1933 | self.assertEqual(in_plen, dsm.in_plen) |
| 1934 | self.assertEqual(out_addr_n, dsm.out_addr[:4]) |
| 1935 | self.assertEqual(out_plen, dsm.out_plen) |
| 1936 | |
Martin | b616e9f | 2017-03-14 02:25:45 -0700 | [diff] [blame] | 1937 | self.clear_snat() |
| 1938 | deterministic_mappings = self.vapi.snat_det_map_dump() |
| 1939 | self.assertEqual(len(deterministic_mappings), 0) |
| 1940 | |
Matus Fabian | 6a0946f | 2017-04-12 03:36:13 -0700 | [diff] [blame] | 1941 | def test_set_timeouts(self): |
| 1942 | """ Set deterministic NAT timeouts """ |
| 1943 | timeouts_before = self.vapi.snat_det_get_timeouts() |
| 1944 | |
| 1945 | self.vapi.snat_det_set_timeouts(timeouts_before.udp + 10, |
| 1946 | timeouts_before.tcp_established + 10, |
| 1947 | timeouts_before.tcp_transitory + 10, |
| 1948 | timeouts_before.icmp + 10) |
| 1949 | |
| 1950 | timeouts_after = self.vapi.snat_det_get_timeouts() |
| 1951 | |
| 1952 | self.assertNotEqual(timeouts_before.udp, timeouts_after.udp) |
| 1953 | self.assertNotEqual(timeouts_before.icmp, timeouts_after.icmp) |
| 1954 | self.assertNotEqual(timeouts_before.tcp_established, |
| 1955 | timeouts_after.tcp_established) |
| 1956 | self.assertNotEqual(timeouts_before.tcp_transitory, |
| 1957 | timeouts_after.tcp_transitory) |
| 1958 | |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 1959 | def test_det_in(self): |
| 1960 | """ CGNAT translation test (TCP, UDP, ICMP) """ |
| 1961 | |
| 1962 | nat_ip = "10.0.0.10" |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 1963 | |
| 1964 | self.vapi.snat_add_det_map(self.pg0.remote_ip4n, |
| 1965 | 32, |
| 1966 | socket.inet_aton(nat_ip), |
| 1967 | 32) |
| 1968 | self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index) |
| 1969 | self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index, |
| 1970 | is_inside=0) |
| 1971 | |
| 1972 | # in2out |
| 1973 | pkts = self.create_stream_in(self.pg0, self.pg1) |
| 1974 | self.pg0.add_stream(pkts) |
| 1975 | self.pg_enable_capture(self.pg_interfaces) |
| 1976 | self.pg_start() |
| 1977 | capture = self.pg1.get_capture(len(pkts)) |
| 1978 | self.verify_capture_out(capture, nat_ip) |
| 1979 | |
| 1980 | # out2in |
| 1981 | pkts = self.create_stream_out(self.pg1, nat_ip) |
| 1982 | self.pg1.add_stream(pkts) |
| 1983 | self.pg_enable_capture(self.pg_interfaces) |
| 1984 | self.pg_start() |
| 1985 | capture = self.pg0.get_capture(len(pkts)) |
| 1986 | self.verify_capture_in(capture, self.pg0) |
| 1987 | |
Martin Gálik | 9806eae | 2017-04-25 01:25:08 -0700 | [diff] [blame] | 1988 | # session dump test |
| 1989 | sessions = self.vapi.snat_det_session_dump(self.pg0.remote_ip4n) |
| 1990 | self.assertEqual(len(sessions), 3) |
| 1991 | |
| 1992 | # TCP session |
| 1993 | s = sessions[0] |
| 1994 | self.assertEqual(s.ext_addr[:4], self.pg1.remote_ip4n) |
| 1995 | self.assertEqual(s.in_port, self.tcp_port_in) |
| 1996 | self.assertEqual(s.out_port, self.tcp_port_out) |
| 1997 | self.assertEqual(s.ext_port, self.tcp_external_port) |
| 1998 | |
| 1999 | # UDP session |
| 2000 | s = sessions[1] |
| 2001 | self.assertEqual(s.ext_addr[:4], self.pg1.remote_ip4n) |
| 2002 | self.assertEqual(s.in_port, self.udp_port_in) |
| 2003 | self.assertEqual(s.out_port, self.udp_port_out) |
| 2004 | self.assertEqual(s.ext_port, self.udp_external_port) |
| 2005 | |
| 2006 | # ICMP session |
| 2007 | s = sessions[2] |
| 2008 | self.assertEqual(s.ext_addr[:4], self.pg1.remote_ip4n) |
| 2009 | self.assertEqual(s.in_port, self.icmp_id_in) |
| 2010 | self.assertEqual(s.out_port, self.icmp_external_id) |
| 2011 | |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 2012 | def test_multiple_users(self): |
| 2013 | """ CGNAT multiple users """ |
| 2014 | |
| 2015 | nat_ip = "10.0.0.10" |
| 2016 | port_in = 80 |
Martin Gálik | 9806eae | 2017-04-25 01:25:08 -0700 | [diff] [blame] | 2017 | external_port = 6303 |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 2018 | |
| 2019 | host0 = self.pg0.remote_hosts[0] |
| 2020 | host1 = self.pg0.remote_hosts[1] |
| 2021 | |
| 2022 | self.vapi.snat_add_det_map(host0.ip4n, |
| 2023 | 24, |
| 2024 | socket.inet_aton(nat_ip), |
| 2025 | 32) |
| 2026 | self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index) |
| 2027 | self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index, |
| 2028 | is_inside=0) |
| 2029 | |
| 2030 | # host0 to out |
| 2031 | p = (Ether(src=host0.mac, dst=self.pg0.local_mac) / |
| 2032 | IP(src=host0.ip4, dst=self.pg1.remote_ip4) / |
Martin Gálik | 9806eae | 2017-04-25 01:25:08 -0700 | [diff] [blame] | 2033 | TCP(sport=port_in, dport=external_port)) |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 2034 | self.pg0.add_stream(p) |
| 2035 | self.pg_enable_capture(self.pg_interfaces) |
| 2036 | self.pg_start() |
| 2037 | capture = self.pg1.get_capture(1) |
| 2038 | p = capture[0] |
| 2039 | try: |
| 2040 | ip = p[IP] |
| 2041 | tcp = p[TCP] |
| 2042 | self.assertEqual(ip.src, nat_ip) |
| 2043 | self.assertEqual(ip.dst, self.pg1.remote_ip4) |
Martin Gálik | 9806eae | 2017-04-25 01:25:08 -0700 | [diff] [blame] | 2044 | self.assertEqual(tcp.dport, external_port) |
| 2045 | port_out0 = tcp.sport |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 2046 | except: |
| 2047 | self.logger.error(ppp("Unexpected or invalid packet:", p)) |
| 2048 | raise |
| 2049 | |
| 2050 | # host1 to out |
| 2051 | p = (Ether(src=host1.mac, dst=self.pg0.local_mac) / |
| 2052 | IP(src=host1.ip4, dst=self.pg1.remote_ip4) / |
Martin Gálik | 9806eae | 2017-04-25 01:25:08 -0700 | [diff] [blame] | 2053 | TCP(sport=port_in, dport=external_port)) |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 2054 | self.pg0.add_stream(p) |
| 2055 | self.pg_enable_capture(self.pg_interfaces) |
| 2056 | self.pg_start() |
| 2057 | capture = self.pg1.get_capture(1) |
| 2058 | p = capture[0] |
| 2059 | try: |
| 2060 | ip = p[IP] |
| 2061 | tcp = p[TCP] |
| 2062 | self.assertEqual(ip.src, nat_ip) |
| 2063 | self.assertEqual(ip.dst, self.pg1.remote_ip4) |
Martin Gálik | 9806eae | 2017-04-25 01:25:08 -0700 | [diff] [blame] | 2064 | self.assertEqual(tcp.dport, external_port) |
| 2065 | port_out1 = tcp.sport |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 2066 | except: |
| 2067 | self.logger.error(ppp("Unexpected or invalid packet:", p)) |
| 2068 | raise |
| 2069 | |
| 2070 | dms = self.vapi.snat_det_map_dump() |
| 2071 | self.assertEqual(1, len(dms)) |
| 2072 | self.assertEqual(2, dms[0].ses_num) |
| 2073 | |
| 2074 | # out to host0 |
| 2075 | p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) / |
| 2076 | IP(src=self.pg1.remote_ip4, dst=nat_ip) / |
Martin Gálik | 9806eae | 2017-04-25 01:25:08 -0700 | [diff] [blame] | 2077 | TCP(sport=external_port, dport=port_out0)) |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 2078 | self.pg1.add_stream(p) |
| 2079 | self.pg_enable_capture(self.pg_interfaces) |
| 2080 | self.pg_start() |
| 2081 | capture = self.pg0.get_capture(1) |
| 2082 | p = capture[0] |
| 2083 | try: |
| 2084 | ip = p[IP] |
| 2085 | tcp = p[TCP] |
| 2086 | self.assertEqual(ip.src, self.pg1.remote_ip4) |
| 2087 | self.assertEqual(ip.dst, host0.ip4) |
| 2088 | self.assertEqual(tcp.dport, port_in) |
Martin Gálik | 9806eae | 2017-04-25 01:25:08 -0700 | [diff] [blame] | 2089 | self.assertEqual(tcp.sport, external_port) |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 2090 | except: |
| 2091 | self.logger.error(ppp("Unexpected or invalid packet:", p)) |
| 2092 | raise |
| 2093 | |
| 2094 | # out to host1 |
| 2095 | p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) / |
| 2096 | IP(src=self.pg1.remote_ip4, dst=nat_ip) / |
Martin Gálik | 9806eae | 2017-04-25 01:25:08 -0700 | [diff] [blame] | 2097 | TCP(sport=external_port, dport=port_out1)) |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 2098 | self.pg1.add_stream(p) |
| 2099 | self.pg_enable_capture(self.pg_interfaces) |
| 2100 | self.pg_start() |
| 2101 | capture = self.pg0.get_capture(1) |
| 2102 | p = capture[0] |
| 2103 | try: |
| 2104 | ip = p[IP] |
| 2105 | tcp = p[TCP] |
| 2106 | self.assertEqual(ip.src, self.pg1.remote_ip4) |
| 2107 | self.assertEqual(ip.dst, host1.ip4) |
| 2108 | self.assertEqual(tcp.dport, port_in) |
Martin Gálik | 9806eae | 2017-04-25 01:25:08 -0700 | [diff] [blame] | 2109 | self.assertEqual(tcp.sport, external_port) |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 2110 | except: |
| 2111 | self.logger.error(ppp("Unexpected or invalid packet", p)) |
| 2112 | raise |
| 2113 | |
Martin Gálik | 6bc8c64 | 2017-04-19 01:12:27 -0700 | [diff] [blame] | 2114 | # session close api test |
| 2115 | self.vapi.snat_det_close_session_out(socket.inet_aton(nat_ip), |
Martin Gálik | 9806eae | 2017-04-25 01:25:08 -0700 | [diff] [blame] | 2116 | port_out1, |
Martin Gálik | 6bc8c64 | 2017-04-19 01:12:27 -0700 | [diff] [blame] | 2117 | self.pg1.remote_ip4n, |
Martin Gálik | 9806eae | 2017-04-25 01:25:08 -0700 | [diff] [blame] | 2118 | external_port) |
Martin Gálik | 6bc8c64 | 2017-04-19 01:12:27 -0700 | [diff] [blame] | 2119 | dms = self.vapi.snat_det_map_dump() |
| 2120 | self.assertEqual(dms[0].ses_num, 1) |
| 2121 | |
| 2122 | self.vapi.snat_det_close_session_in(host0.ip4n, |
| 2123 | port_in, |
| 2124 | self.pg1.remote_ip4n, |
Martin Gálik | 9806eae | 2017-04-25 01:25:08 -0700 | [diff] [blame] | 2125 | external_port) |
Martin Gálik | 6bc8c64 | 2017-04-19 01:12:27 -0700 | [diff] [blame] | 2126 | dms = self.vapi.snat_det_map_dump() |
| 2127 | self.assertEqual(dms[0].ses_num, 0) |
| 2128 | |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 2129 | def test_tcp_session_close_detection_in(self): |
| 2130 | """ CGNAT TCP session close initiated from inside network """ |
| 2131 | self.vapi.snat_add_det_map(self.pg0.remote_ip4n, |
| 2132 | 32, |
| 2133 | socket.inet_aton(self.snat_addr), |
| 2134 | 32) |
| 2135 | self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index) |
| 2136 | self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index, |
| 2137 | is_inside=0) |
| 2138 | |
| 2139 | self.initiate_tcp_session(self.pg0, self.pg1) |
| 2140 | |
| 2141 | # close the session from inside |
| 2142 | try: |
| 2143 | # FIN packet in -> out |
| 2144 | p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / |
| 2145 | IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) / |
Martin Gálik | 9806eae | 2017-04-25 01:25:08 -0700 | [diff] [blame] | 2146 | TCP(sport=self.tcp_port_in, dport=self.tcp_external_port, |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 2147 | flags="F")) |
| 2148 | self.pg0.add_stream(p) |
| 2149 | self.pg_enable_capture(self.pg_interfaces) |
| 2150 | self.pg_start() |
| 2151 | self.pg1.get_capture(1) |
| 2152 | |
| 2153 | pkts = [] |
| 2154 | |
| 2155 | # ACK packet out -> in |
| 2156 | p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) / |
| 2157 | IP(src=self.pg1.remote_ip4, dst=self.snat_addr) / |
Martin Gálik | 9806eae | 2017-04-25 01:25:08 -0700 | [diff] [blame] | 2158 | TCP(sport=self.tcp_external_port, dport=self.tcp_port_out, |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 2159 | flags="A")) |
| 2160 | pkts.append(p) |
| 2161 | |
| 2162 | # FIN packet out -> in |
| 2163 | p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) / |
| 2164 | IP(src=self.pg1.remote_ip4, dst=self.snat_addr) / |
Martin Gálik | 9806eae | 2017-04-25 01:25:08 -0700 | [diff] [blame] | 2165 | TCP(sport=self.tcp_external_port, dport=self.tcp_port_out, |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 2166 | flags="F")) |
| 2167 | pkts.append(p) |
| 2168 | |
| 2169 | self.pg1.add_stream(pkts) |
| 2170 | self.pg_enable_capture(self.pg_interfaces) |
| 2171 | self.pg_start() |
| 2172 | self.pg0.get_capture(2) |
| 2173 | |
| 2174 | # ACK packet in -> out |
| 2175 | p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / |
| 2176 | IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) / |
Martin Gálik | 9806eae | 2017-04-25 01:25:08 -0700 | [diff] [blame] | 2177 | TCP(sport=self.tcp_port_in, dport=self.tcp_external_port, |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 2178 | flags="A")) |
| 2179 | self.pg0.add_stream(p) |
| 2180 | self.pg_enable_capture(self.pg_interfaces) |
| 2181 | self.pg_start() |
| 2182 | self.pg1.get_capture(1) |
| 2183 | |
| 2184 | # Check if snat closed the session |
| 2185 | dms = self.vapi.snat_det_map_dump() |
| 2186 | self.assertEqual(0, dms[0].ses_num) |
| 2187 | except: |
| 2188 | self.logger.error("TCP session termination failed") |
| 2189 | raise |
| 2190 | |
| 2191 | def test_tcp_session_close_detection_out(self): |
| 2192 | """ CGNAT TCP session close initiated from outside network """ |
| 2193 | self.vapi.snat_add_det_map(self.pg0.remote_ip4n, |
| 2194 | 32, |
| 2195 | socket.inet_aton(self.snat_addr), |
| 2196 | 32) |
| 2197 | self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index) |
| 2198 | self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index, |
| 2199 | is_inside=0) |
| 2200 | |
| 2201 | self.initiate_tcp_session(self.pg0, self.pg1) |
| 2202 | |
| 2203 | # close the session from outside |
| 2204 | try: |
| 2205 | # FIN packet out -> in |
| 2206 | p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) / |
| 2207 | IP(src=self.pg1.remote_ip4, dst=self.snat_addr) / |
Martin Gálik | 9806eae | 2017-04-25 01:25:08 -0700 | [diff] [blame] | 2208 | TCP(sport=self.tcp_external_port, dport=self.tcp_port_out, |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 2209 | flags="F")) |
| 2210 | self.pg1.add_stream(p) |
| 2211 | self.pg_enable_capture(self.pg_interfaces) |
| 2212 | self.pg_start() |
| 2213 | self.pg0.get_capture(1) |
| 2214 | |
| 2215 | pkts = [] |
| 2216 | |
| 2217 | # ACK packet in -> out |
| 2218 | p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / |
| 2219 | IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) / |
Martin Gálik | 9806eae | 2017-04-25 01:25:08 -0700 | [diff] [blame] | 2220 | TCP(sport=self.tcp_port_in, dport=self.tcp_external_port, |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 2221 | flags="A")) |
| 2222 | pkts.append(p) |
| 2223 | |
| 2224 | # ACK packet in -> out |
| 2225 | p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / |
| 2226 | IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) / |
Martin Gálik | 9806eae | 2017-04-25 01:25:08 -0700 | [diff] [blame] | 2227 | TCP(sport=self.tcp_port_in, dport=self.tcp_external_port, |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 2228 | flags="F")) |
| 2229 | pkts.append(p) |
| 2230 | |
| 2231 | self.pg0.add_stream(pkts) |
| 2232 | self.pg_enable_capture(self.pg_interfaces) |
| 2233 | self.pg_start() |
| 2234 | self.pg1.get_capture(2) |
| 2235 | |
| 2236 | # ACK packet out -> in |
| 2237 | p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) / |
| 2238 | IP(src=self.pg1.remote_ip4, dst=self.snat_addr) / |
Martin Gálik | 9806eae | 2017-04-25 01:25:08 -0700 | [diff] [blame] | 2239 | TCP(sport=self.tcp_external_port, dport=self.tcp_port_out, |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 2240 | flags="A")) |
| 2241 | self.pg1.add_stream(p) |
| 2242 | self.pg_enable_capture(self.pg_interfaces) |
| 2243 | self.pg_start() |
| 2244 | self.pg0.get_capture(1) |
| 2245 | |
| 2246 | # Check if snat closed the session |
| 2247 | dms = self.vapi.snat_det_map_dump() |
| 2248 | self.assertEqual(0, dms[0].ses_num) |
| 2249 | except: |
| 2250 | self.logger.error("TCP session termination failed") |
| 2251 | raise |
| 2252 | |
| 2253 | @unittest.skipUnless(running_extended_tests(), "part of extended tests") |
| 2254 | def test_session_timeout(self): |
| 2255 | """ CGNAT session timeouts """ |
| 2256 | self.vapi.snat_add_det_map(self.pg0.remote_ip4n, |
| 2257 | 32, |
| 2258 | socket.inet_aton(self.snat_addr), |
| 2259 | 32) |
| 2260 | self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index) |
| 2261 | self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index, |
| 2262 | is_inside=0) |
| 2263 | |
| 2264 | self.initiate_tcp_session(self.pg0, self.pg1) |
| 2265 | self.vapi.snat_det_set_timeouts(5, 5, 5, 5) |
| 2266 | pkts = self.create_stream_in(self.pg0, self.pg1) |
| 2267 | self.pg0.add_stream(pkts) |
| 2268 | self.pg_enable_capture(self.pg_interfaces) |
| 2269 | self.pg_start() |
| 2270 | capture = self.pg1.get_capture(len(pkts)) |
| 2271 | sleep(15) |
| 2272 | |
| 2273 | dms = self.vapi.snat_det_map_dump() |
| 2274 | self.assertEqual(0, dms[0].ses_num) |
| 2275 | |
| 2276 | def test_session_limit_per_user(self): |
| 2277 | """ CGNAT maximum 1000 sessions per user should be created """ |
| 2278 | self.vapi.snat_add_det_map(self.pg0.remote_ip4n, |
| 2279 | 32, |
| 2280 | socket.inet_aton(self.snat_addr), |
| 2281 | 32) |
| 2282 | self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index) |
| 2283 | self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index, |
| 2284 | is_inside=0) |
Matus Fabian | 2f2db1c | 2017-04-18 05:29:59 -0700 | [diff] [blame] | 2285 | self.vapi.set_ipfix_exporter(collector_address=self.pg2.remote_ip4n, |
| 2286 | src_address=self.pg2.local_ip4n, |
| 2287 | path_mtu=512, |
| 2288 | template_interval=10) |
| 2289 | self.vapi.snat_ipfix() |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 2290 | |
| 2291 | pkts = [] |
| 2292 | for port in range(1025, 2025): |
| 2293 | p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / |
| 2294 | IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) / |
| 2295 | UDP(sport=port, dport=port)) |
| 2296 | pkts.append(p) |
| 2297 | |
| 2298 | self.pg0.add_stream(pkts) |
| 2299 | self.pg_enable_capture(self.pg_interfaces) |
| 2300 | self.pg_start() |
| 2301 | capture = self.pg1.get_capture(len(pkts)) |
| 2302 | |
| 2303 | p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / |
| 2304 | IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) / |
Martin Gálik | f7e655d | 2017-04-27 02:13:26 -0700 | [diff] [blame] | 2305 | UDP(sport=3001, dport=3002)) |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 2306 | self.pg0.add_stream(p) |
| 2307 | self.pg_enable_capture(self.pg_interfaces) |
| 2308 | self.pg_start() |
| 2309 | capture = self.pg1.assert_nothing_captured() |
| 2310 | |
Martin Gálik | f7e655d | 2017-04-27 02:13:26 -0700 | [diff] [blame] | 2311 | # verify ICMP error packet |
| 2312 | capture = self.pg0.get_capture(1) |
| 2313 | p = capture[0] |
| 2314 | self.assertTrue(p.haslayer(ICMP)) |
| 2315 | icmp = p[ICMP] |
| 2316 | self.assertEqual(icmp.type, 3) |
| 2317 | self.assertEqual(icmp.code, 1) |
| 2318 | self.assertTrue(icmp.haslayer(IPerror)) |
| 2319 | inner_ip = icmp[IPerror] |
| 2320 | self.assertEqual(inner_ip[UDPerror].sport, 3001) |
| 2321 | self.assertEqual(inner_ip[UDPerror].dport, 3002) |
| 2322 | |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 2323 | dms = self.vapi.snat_det_map_dump() |
| 2324 | |
| 2325 | self.assertEqual(1000, dms[0].ses_num) |
| 2326 | |
Matus Fabian | 2f2db1c | 2017-04-18 05:29:59 -0700 | [diff] [blame] | 2327 | # verify IPFIX logging |
| 2328 | self.vapi.cli("ipfix flush") # FIXME this should be an API call |
| 2329 | capture = self.pg2.get_capture(2) |
| 2330 | ipfix = IPFIXDecoder() |
| 2331 | # first load template |
| 2332 | for p in capture: |
| 2333 | self.assertTrue(p.haslayer(IPFIX)) |
| 2334 | if p.haslayer(Template): |
| 2335 | ipfix.add_template(p.getlayer(Template)) |
| 2336 | # verify events in data set |
| 2337 | for p in capture: |
| 2338 | if p.haslayer(Data): |
| 2339 | data = ipfix.decode_data_set(p.getlayer(Set)) |
| 2340 | self.verify_ipfix_max_entries_per_user(data) |
| 2341 | |
Martin | 17a75cb | 2017-03-08 05:53:20 -0800 | [diff] [blame] | 2342 | def clear_snat(self): |
| 2343 | """ |
| 2344 | Clear SNAT configuration. |
| 2345 | """ |
Matus Fabian | 2f2db1c | 2017-04-18 05:29:59 -0700 | [diff] [blame] | 2346 | self.vapi.snat_ipfix(enable=0) |
Matus Fabian | 6a0946f | 2017-04-12 03:36:13 -0700 | [diff] [blame] | 2347 | self.vapi.snat_det_set_timeouts() |
Martin | 17a75cb | 2017-03-08 05:53:20 -0800 | [diff] [blame] | 2348 | deterministic_mappings = self.vapi.snat_det_map_dump() |
| 2349 | for dsm in deterministic_mappings: |
| 2350 | self.vapi.snat_add_det_map(dsm.in_addr, |
| 2351 | dsm.in_plen, |
| 2352 | dsm.out_addr, |
| 2353 | dsm.out_plen, |
| 2354 | is_add=0) |
| 2355 | |
Martin Gálik | 977c1cb | 2017-03-30 23:21:51 -0700 | [diff] [blame] | 2356 | interfaces = self.vapi.snat_interface_dump() |
| 2357 | for intf in interfaces: |
| 2358 | self.vapi.snat_interface_add_del_feature(intf.sw_if_index, |
| 2359 | intf.is_inside, |
| 2360 | is_add=0) |
| 2361 | |
Matus Fabian | 066f034 | 2017-02-10 03:48:01 -0800 | [diff] [blame] | 2362 | def tearDown(self): |
| 2363 | super(TestDeterministicNAT, self).tearDown() |
| 2364 | if not self.vpp_dead: |
| 2365 | self.logger.info(self.vapi.cli("show snat detail")) |
Martin | 17a75cb | 2017-03-08 05:53:20 -0800 | [diff] [blame] | 2366 | self.clear_snat() |
Matus Fabian | 066f034 | 2017-02-10 03:48:01 -0800 | [diff] [blame] | 2367 | |
Matus Fabian | 06596c5 | 2017-06-06 04:53:28 -0700 | [diff] [blame^] | 2368 | |
| 2369 | class TestNAT64(MethodHolder): |
| 2370 | """ NAT64 Test Cases """ |
| 2371 | |
| 2372 | @classmethod |
| 2373 | def setUpClass(cls): |
| 2374 | super(TestNAT64, cls).setUpClass() |
| 2375 | |
| 2376 | try: |
| 2377 | cls.tcp_port_in = 6303 |
| 2378 | cls.tcp_port_out = 6303 |
| 2379 | cls.udp_port_in = 6304 |
| 2380 | cls.udp_port_out = 6304 |
| 2381 | cls.icmp_id_in = 6305 |
| 2382 | cls.icmp_id_out = 6305 |
| 2383 | cls.nat_addr = '10.0.0.3' |
| 2384 | cls.nat_addr_n = socket.inet_pton(socket.AF_INET, cls.nat_addr) |
| 2385 | |
| 2386 | cls.create_pg_interfaces(range(2)) |
| 2387 | cls.ip6_interfaces = list(cls.pg_interfaces[0:1]) |
| 2388 | cls.ip4_interfaces = list(cls.pg_interfaces[1:2]) |
| 2389 | |
| 2390 | for i in cls.ip6_interfaces: |
| 2391 | i.admin_up() |
| 2392 | i.config_ip6() |
| 2393 | i.resolve_ndp() |
| 2394 | |
| 2395 | for i in cls.ip4_interfaces: |
| 2396 | i.admin_up() |
| 2397 | i.config_ip4() |
| 2398 | i.resolve_arp() |
| 2399 | |
| 2400 | except Exception: |
| 2401 | super(TestNAT64, cls).tearDownClass() |
| 2402 | raise |
| 2403 | |
| 2404 | def test_pool(self): |
| 2405 | """ Add/delete address to NAT64 pool """ |
| 2406 | nat_addr = socket.inet_pton(socket.AF_INET, '1.2.3.4') |
| 2407 | |
| 2408 | self.vapi.nat64_add_del_pool_addr_range(nat_addr, nat_addr) |
| 2409 | |
| 2410 | addresses = self.vapi.nat64_pool_addr_dump() |
| 2411 | self.assertEqual(len(addresses), 1) |
| 2412 | self.assertEqual(addresses[0].address, nat_addr) |
| 2413 | |
| 2414 | self.vapi.nat64_add_del_pool_addr_range(nat_addr, nat_addr, is_add=0) |
| 2415 | |
| 2416 | addresses = self.vapi.nat64_pool_addr_dump() |
| 2417 | self.assertEqual(len(addresses), 0) |
| 2418 | |
| 2419 | def test_interface(self): |
| 2420 | """ Enable/disable NAT64 feature on the interface """ |
| 2421 | self.vapi.nat64_add_del_interface(self.pg0.sw_if_index) |
| 2422 | self.vapi.nat64_add_del_interface(self.pg1.sw_if_index, is_inside=0) |
| 2423 | |
| 2424 | interfaces = self.vapi.nat64_interface_dump() |
| 2425 | self.assertEqual(len(interfaces), 2) |
| 2426 | pg0_found = False |
| 2427 | pg1_found = False |
| 2428 | for intf in interfaces: |
| 2429 | if intf.sw_if_index == self.pg0.sw_if_index: |
| 2430 | self.assertEqual(intf.is_inside, 1) |
| 2431 | pg0_found = True |
| 2432 | elif intf.sw_if_index == self.pg1.sw_if_index: |
| 2433 | self.assertEqual(intf.is_inside, 0) |
| 2434 | pg1_found = True |
| 2435 | self.assertTrue(pg0_found) |
| 2436 | self.assertTrue(pg1_found) |
| 2437 | |
| 2438 | features = self.vapi.cli("show interface features pg0") |
| 2439 | self.assertNotEqual(features.find('nat64-in2out'), -1) |
| 2440 | features = self.vapi.cli("show interface features pg1") |
| 2441 | self.assertNotEqual(features.find('nat64-out2in'), -1) |
| 2442 | |
| 2443 | self.vapi.nat64_add_del_interface(self.pg0.sw_if_index, is_add=0) |
| 2444 | self.vapi.nat64_add_del_interface(self.pg1.sw_if_index, is_add=0) |
| 2445 | |
| 2446 | interfaces = self.vapi.nat64_interface_dump() |
| 2447 | self.assertEqual(len(interfaces), 0) |
| 2448 | |
| 2449 | def test_static_bib(self): |
| 2450 | """ Add/delete static BIB entry """ |
| 2451 | in_addr = socket.inet_pton(socket.AF_INET6, |
| 2452 | '2001:db8:85a3::8a2e:370:7334') |
| 2453 | out_addr = socket.inet_pton(socket.AF_INET, '10.1.1.3') |
| 2454 | in_port = 1234 |
| 2455 | out_port = 5678 |
| 2456 | proto = IP_PROTOS.tcp |
| 2457 | |
| 2458 | self.vapi.nat64_add_del_static_bib(in_addr, |
| 2459 | out_addr, |
| 2460 | in_port, |
| 2461 | out_port, |
| 2462 | proto) |
| 2463 | bib = self.vapi.nat64_bib_dump(IP_PROTOS.tcp) |
| 2464 | static_bib_num = 0 |
| 2465 | for bibe in bib: |
| 2466 | if bibe.is_static: |
| 2467 | static_bib_num += 1 |
| 2468 | self.assertEqual(bibe.i_addr, in_addr) |
| 2469 | self.assertEqual(bibe.o_addr, out_addr) |
| 2470 | self.assertEqual(bibe.i_port, in_port) |
| 2471 | self.assertEqual(bibe.o_port, out_port) |
| 2472 | self.assertEqual(static_bib_num, 1) |
| 2473 | |
| 2474 | self.vapi.nat64_add_del_static_bib(in_addr, |
| 2475 | out_addr, |
| 2476 | in_port, |
| 2477 | out_port, |
| 2478 | proto, |
| 2479 | is_add=0) |
| 2480 | bib = self.vapi.nat64_bib_dump(IP_PROTOS.tcp) |
| 2481 | static_bib_num = 0 |
| 2482 | for bibe in bib: |
| 2483 | if bibe.is_static: |
| 2484 | static_bib_num += 1 |
| 2485 | self.assertEqual(static_bib_num, 0) |
| 2486 | |
| 2487 | def test_set_timeouts(self): |
| 2488 | """ Set NAT64 timeouts """ |
| 2489 | # verify default values |
| 2490 | timeouts = self.vapi.nat64_get_timeouts() |
| 2491 | self.assertEqual(timeouts.udp, 300) |
| 2492 | self.assertEqual(timeouts.icmp, 60) |
| 2493 | self.assertEqual(timeouts.tcp_trans, 240) |
| 2494 | self.assertEqual(timeouts.tcp_est, 7440) |
| 2495 | self.assertEqual(timeouts.tcp_incoming_syn, 6) |
| 2496 | |
| 2497 | # set and verify custom values |
| 2498 | self.vapi.nat64_set_timeouts(udp=200, icmp=30, tcp_trans=250, |
| 2499 | tcp_est=7450, tcp_incoming_syn=10) |
| 2500 | timeouts = self.vapi.nat64_get_timeouts() |
| 2501 | self.assertEqual(timeouts.udp, 200) |
| 2502 | self.assertEqual(timeouts.icmp, 30) |
| 2503 | self.assertEqual(timeouts.tcp_trans, 250) |
| 2504 | self.assertEqual(timeouts.tcp_est, 7450) |
| 2505 | self.assertEqual(timeouts.tcp_incoming_syn, 10) |
| 2506 | |
| 2507 | def test_dynamic(self): |
| 2508 | """ NAT64 dynamic translation test """ |
| 2509 | self.tcp_port_in = 6303 |
| 2510 | self.udp_port_in = 6304 |
| 2511 | self.icmp_id_in = 6305 |
| 2512 | |
| 2513 | ses_num_start = self.nat64_get_ses_num() |
| 2514 | |
| 2515 | self.vapi.nat64_add_del_pool_addr_range(self.nat_addr_n, |
| 2516 | self.nat_addr_n) |
| 2517 | self.vapi.nat64_add_del_interface(self.pg0.sw_if_index) |
| 2518 | self.vapi.nat64_add_del_interface(self.pg1.sw_if_index, is_inside=0) |
| 2519 | |
| 2520 | # in2out |
| 2521 | pkts = self.create_stream_in_ip6(self.pg0, self.pg1) |
| 2522 | self.pg0.add_stream(pkts) |
| 2523 | self.pg_enable_capture(self.pg_interfaces) |
| 2524 | self.pg_start() |
| 2525 | capture = self.pg1.get_capture(3) |
| 2526 | self.verify_capture_out(capture, packet_num=3, nat_ip=self.nat_addr, |
| 2527 | dst_ip=self.pg1.remote_ip4) |
| 2528 | |
| 2529 | # out2in |
| 2530 | pkts = self.create_stream_out(self.pg1, dst_ip=self.nat_addr) |
| 2531 | self.pg1.add_stream(pkts) |
| 2532 | self.pg_enable_capture(self.pg_interfaces) |
| 2533 | self.pg_start() |
| 2534 | capture = self.pg0.get_capture(3) |
| 2535 | ip = IPv6(src=''.join(['64:ff9b::', self.pg1.remote_ip4])) |
| 2536 | self.verify_capture_in_ip6(capture, ip[IPv6].src, self.pg0.remote_ip6) |
| 2537 | |
| 2538 | # in2out |
| 2539 | pkts = self.create_stream_in_ip6(self.pg0, self.pg1) |
| 2540 | self.pg0.add_stream(pkts) |
| 2541 | self.pg_enable_capture(self.pg_interfaces) |
| 2542 | self.pg_start() |
| 2543 | capture = self.pg1.get_capture(3) |
| 2544 | self.verify_capture_out(capture, packet_num=3, nat_ip=self.nat_addr, |
| 2545 | dst_ip=self.pg1.remote_ip4) |
| 2546 | |
| 2547 | # out2in |
| 2548 | pkts = self.create_stream_out(self.pg1, dst_ip=self.nat_addr) |
| 2549 | self.pg1.add_stream(pkts) |
| 2550 | self.pg_enable_capture(self.pg_interfaces) |
| 2551 | self.pg_start() |
| 2552 | capture = self.pg0.get_capture(3) |
| 2553 | ip = IPv6(src=''.join(['64:ff9b::', self.pg1.remote_ip4])) |
| 2554 | self.verify_capture_in_ip6(capture, ip[IPv6].src, self.pg0.remote_ip6) |
| 2555 | |
| 2556 | ses_num_end = self.nat64_get_ses_num() |
| 2557 | |
| 2558 | self.assertEqual(ses_num_end - ses_num_start, 3) |
| 2559 | |
| 2560 | def test_static(self): |
| 2561 | """ NAT64 static translation test """ |
| 2562 | self.tcp_port_in = 60303 |
| 2563 | self.udp_port_in = 60304 |
| 2564 | self.icmp_id_in = 60305 |
| 2565 | self.tcp_port_out = 60303 |
| 2566 | self.udp_port_out = 60304 |
| 2567 | self.icmp_id_out = 60305 |
| 2568 | |
| 2569 | ses_num_start = self.nat64_get_ses_num() |
| 2570 | |
| 2571 | self.vapi.nat64_add_del_pool_addr_range(self.nat_addr_n, |
| 2572 | self.nat_addr_n) |
| 2573 | self.vapi.nat64_add_del_interface(self.pg0.sw_if_index) |
| 2574 | self.vapi.nat64_add_del_interface(self.pg1.sw_if_index, is_inside=0) |
| 2575 | |
| 2576 | self.vapi.nat64_add_del_static_bib(self.pg0.remote_ip6n, |
| 2577 | self.nat_addr_n, |
| 2578 | self.tcp_port_in, |
| 2579 | self.tcp_port_out, |
| 2580 | IP_PROTOS.tcp) |
| 2581 | self.vapi.nat64_add_del_static_bib(self.pg0.remote_ip6n, |
| 2582 | self.nat_addr_n, |
| 2583 | self.udp_port_in, |
| 2584 | self.udp_port_out, |
| 2585 | IP_PROTOS.udp) |
| 2586 | self.vapi.nat64_add_del_static_bib(self.pg0.remote_ip6n, |
| 2587 | self.nat_addr_n, |
| 2588 | self.icmp_id_in, |
| 2589 | self.icmp_id_out, |
| 2590 | IP_PROTOS.icmp) |
| 2591 | |
| 2592 | # in2out |
| 2593 | pkts = self.create_stream_in_ip6(self.pg0, self.pg1) |
| 2594 | self.pg0.add_stream(pkts) |
| 2595 | self.pg_enable_capture(self.pg_interfaces) |
| 2596 | self.pg_start() |
| 2597 | capture = self.pg1.get_capture(3) |
| 2598 | self.verify_capture_out(capture, packet_num=3, nat_ip=self.nat_addr, |
| 2599 | dst_ip=self.pg1.remote_ip4, same_port=True) |
| 2600 | |
| 2601 | # out2in |
| 2602 | pkts = self.create_stream_out(self.pg1, dst_ip=self.nat_addr) |
| 2603 | self.pg1.add_stream(pkts) |
| 2604 | self.pg_enable_capture(self.pg_interfaces) |
| 2605 | self.pg_start() |
| 2606 | capture = self.pg0.get_capture(3) |
| 2607 | ip = IPv6(src=''.join(['64:ff9b::', self.pg1.remote_ip4])) |
| 2608 | self.verify_capture_in_ip6(capture, ip[IPv6].src, self.pg0.remote_ip6) |
| 2609 | |
| 2610 | ses_num_end = self.nat64_get_ses_num() |
| 2611 | |
| 2612 | self.assertEqual(ses_num_end - ses_num_start, 3) |
| 2613 | |
| 2614 | @unittest.skipUnless(running_extended_tests(), "part of extended tests") |
| 2615 | def test_session_timeout(self): |
| 2616 | """ NAT64 session timeout """ |
| 2617 | self.icmp_id_in = 1234 |
| 2618 | self.vapi.nat64_add_del_pool_addr_range(self.nat_addr_n, |
| 2619 | self.nat_addr_n) |
| 2620 | self.vapi.nat64_add_del_interface(self.pg0.sw_if_index) |
| 2621 | self.vapi.nat64_add_del_interface(self.pg1.sw_if_index, is_inside=0) |
| 2622 | self.vapi.nat64_set_timeouts(icmp=5) |
| 2623 | |
| 2624 | pkts = self.create_stream_in_ip6(self.pg0, self.pg1) |
| 2625 | self.pg0.add_stream(pkts) |
| 2626 | self.pg_enable_capture(self.pg_interfaces) |
| 2627 | self.pg_start() |
| 2628 | capture = self.pg1.get_capture(3) |
| 2629 | |
| 2630 | ses_num_before_timeout = self.nat64_get_ses_num() |
| 2631 | |
| 2632 | sleep(15) |
| 2633 | |
| 2634 | # ICMP session after timeout |
| 2635 | ses_num_after_timeout = self.nat64_get_ses_num() |
| 2636 | self.assertNotEqual(ses_num_before_timeout, ses_num_after_timeout) |
| 2637 | |
| 2638 | def nat64_get_ses_num(self): |
| 2639 | """ |
| 2640 | Return number of active NAT64 sessions. |
| 2641 | """ |
| 2642 | ses_num = 0 |
| 2643 | st = self.vapi.nat64_st_dump(IP_PROTOS.tcp) |
| 2644 | ses_num += len(st) |
| 2645 | st = self.vapi.nat64_st_dump(IP_PROTOS.udp) |
| 2646 | ses_num += len(st) |
| 2647 | st = self.vapi.nat64_st_dump(IP_PROTOS.icmp) |
| 2648 | ses_num += len(st) |
| 2649 | return ses_num |
| 2650 | |
| 2651 | def clear_nat64(self): |
| 2652 | """ |
| 2653 | Clear NAT64 configuration. |
| 2654 | """ |
| 2655 | self.vapi.nat64_set_timeouts() |
| 2656 | |
| 2657 | interfaces = self.vapi.nat64_interface_dump() |
| 2658 | for intf in interfaces: |
| 2659 | self.vapi.nat64_add_del_interface(intf.sw_if_index, |
| 2660 | intf.is_inside, |
| 2661 | is_add=0) |
| 2662 | |
| 2663 | bib = self.vapi.nat64_bib_dump(IP_PROTOS.tcp) |
| 2664 | for bibe in bib: |
| 2665 | if bibe.is_static: |
| 2666 | self.vapi.nat64_add_del_static_bib(bibe.i_addr, |
| 2667 | bibe.o_addr, |
| 2668 | bibe.i_port, |
| 2669 | bibe.o_port, |
| 2670 | bibe.proto, |
| 2671 | bibe.vrf_id, |
| 2672 | is_add=0) |
| 2673 | |
| 2674 | bib = self.vapi.nat64_bib_dump(IP_PROTOS.udp) |
| 2675 | for bibe in bib: |
| 2676 | if bibe.is_static: |
| 2677 | self.vapi.nat64_add_del_static_bib(bibe.i_addr, |
| 2678 | bibe.o_addr, |
| 2679 | bibe.i_port, |
| 2680 | bibe.o_port, |
| 2681 | bibe.proto, |
| 2682 | bibe.vrf_id, |
| 2683 | is_add=0) |
| 2684 | |
| 2685 | bib = self.vapi.nat64_bib_dump(IP_PROTOS.icmp) |
| 2686 | for bibe in bib: |
| 2687 | if bibe.is_static: |
| 2688 | self.vapi.nat64_add_del_static_bib(bibe.i_addr, |
| 2689 | bibe.o_addr, |
| 2690 | bibe.i_port, |
| 2691 | bibe.o_port, |
| 2692 | bibe.proto, |
| 2693 | bibe.vrf_id, |
| 2694 | is_add=0) |
| 2695 | |
| 2696 | adresses = self.vapi.nat64_pool_addr_dump() |
| 2697 | for addr in adresses: |
| 2698 | self.vapi.nat64_add_del_pool_addr_range(addr.address, |
| 2699 | addr.address, |
| 2700 | is_add=0) |
| 2701 | |
| 2702 | def tearDown(self): |
| 2703 | super(TestNAT64, self).tearDown() |
| 2704 | if not self.vpp_dead: |
| 2705 | self.logger.info(self.vapi.cli("show nat64 pool")) |
| 2706 | self.logger.info(self.vapi.cli("show nat64 interfaces")) |
| 2707 | self.logger.info(self.vapi.cli("show nat64 bib tcp")) |
| 2708 | self.logger.info(self.vapi.cli("show nat64 bib udp")) |
| 2709 | self.logger.info(self.vapi.cli("show nat64 bib icmp")) |
| 2710 | self.logger.info(self.vapi.cli("show nat64 session table tcp")) |
| 2711 | self.logger.info(self.vapi.cli("show nat64 session table udp")) |
| 2712 | self.logger.info(self.vapi.cli("show nat64 session table icmp")) |
| 2713 | self.clear_nat64() |
| 2714 | |
Matus Fabian | de88675 | 2016-12-07 03:38:19 -0800 | [diff] [blame] | 2715 | if __name__ == '__main__': |
| 2716 | unittest.main(testRunner=VppTestRunner) |