+ def v4_address_check(self, pkt):
+ self.assertEqual(pkt[IP].src, self.ipv4_map_address)
+ self.assertEqual(pkt[IP].dst, self.ipv4_internet_address)
+
+ def v4_port_check(self, pkt, proto):
+ self.assertEqual(pkt[proto].sport, self.ipv4_udp_or_tcp_map_port)
+ self.assertEqual(pkt[proto].dport, self.ipv4_udp_or_tcp_internet_port)
+
+ def v6_address_check(self, pkt):
+ self.assertEqual(pkt[IPv6].src, self.ipv6_map_address)
+ self.assertEqual(pkt[IPv6].dst, self.ipv6_cpe_address)
+
+ def v6_port_check(self, pkt, proto):
+ self.assertEqual(pkt[proto].sport, self.ipv6_udp_or_tcp_internet_port)
+ self.assertEqual(pkt[proto].dport, self.ipv6_udp_or_tcp_map_port)
+
+ #
+ # Normal translation of UDP packets v4 -> v6 direction
+ # Send 128 frame size packet for IPv4/UDP.
+ # Received packet should be translated into IPv6 packet with no
+ # fragment header.
+ #
+
+ def test_map_t_udp_ip4_to_ip6(self):
+ """ MAP-T UDP IPv4 -> IPv6 """
+
+ eth = Ether(src=self.pg0.remote_mac,
+ dst=self.pg0.local_mac)
+ ip = IP(src=self.pg0.remote_ip4,
+ dst=self.ipv4_map_address,
+ tos=0)
+ udp = UDP(sport=self.ipv4_udp_or_tcp_internet_port,
+ dport=self.ipv4_udp_or_tcp_map_port)
+ payload = "a" * 82
+ tx_pkt = eth / ip / udp / payload
+
+ self.pg_send(self.pg0, tx_pkt * 1)
+
+ rx_pkts = self.pg1.get_capture(1)
+ rx_pkt = rx_pkts[0]
+
+ self.v6_address_check(rx_pkt)
+ self.v6_port_check(rx_pkt, UDP)
+ self.assertEqual(rx_pkt[IPv6].tc, 0) # IPv4 ToS passed to v6 TC
+ self.assertEqual(rx_pkt[IPv6].nh, IPv6(nh="UDP").nh)
+
+ #
+ # Normal translation of TCP packets v4 -> v6 direction.
+ # Send 128 frame size packet for IPv4/TCP.
+ # Received packet should be translated into IPv6 packet with no
+ # fragment header.
+ #
+
+ def test_map_t_tcp_ip4_to_ip6(self):
+ """ MAP-T TCP IPv4 -> IPv6 """
+
+ eth = Ether(src=self.pg0.remote_mac,
+ dst=self.pg0.local_mac)
+ ip = IP(src=self.pg0.remote_ip4,
+ dst=self.ipv4_map_address,
+ tos=0)
+ tcp = TCP(sport=self.ipv4_udp_or_tcp_internet_port,
+ dport=self.ipv4_udp_or_tcp_map_port)
+ payload = "a" * 82
+ tx_pkt = eth / ip / tcp / payload
+
+ self.pg_send(self.pg0, tx_pkt * 1)
+
+ rx_pkts = self.pg1.get_capture(1)
+ rx_pkt = rx_pkts[0]
+
+ self.v6_address_check(rx_pkt)
+ self.v6_port_check(rx_pkt, TCP)
+ self.assertEqual(rx_pkt[IPv6].tc, 0) # IPv4 ToS passed to v6 TC
+ self.assertEqual(rx_pkt[IPv6].nh, IPv6(nh="TCP").nh)
+
+ #
+ # Normal translation of UDP packets v6 -> v4 direction
+ # Send 128 frame size packet for IPv6/UDP.
+ # Received packet should be translated into an IPv4 packet with DF=1.
+ #
+
+ def test_map_t_udp_ip6_to_ip4(self):
+ """ MAP-T UDP IPv6 -> IPv4 """
+
+ eth = Ether(src=self.pg1.remote_mac,
+ dst=self.pg1.local_mac)
+ ip = IPv6(src=self.ipv6_cpe_address,
+ dst=self.ipv6_map_address)
+ udp = UDP(sport=self.ipv6_udp_or_tcp_map_port,
+ dport=self.ipv6_udp_or_tcp_internet_port)
+ payload = "a" * 82
+ tx_pkt = eth / ip / udp / payload
+
+ self.pg_send(self.pg1, tx_pkt * 1)
+
+ rx_pkts = self.pg0.get_capture(1)
+ rx_pkt = rx_pkts[0]
+
+ self.v4_address_check(rx_pkt)
+ self.v4_port_check(rx_pkt, UDP)
+ self.assertEqual(rx_pkt[IP].proto, IP(proto="udp").proto)
+ self.assertEqual(rx_pkt[IP].tos, 0) # IPv6 TC passed to v4 ToS
+ df_bit = IP(flags="DF").flags
+ self.assertNotEqual(rx_pkt[IP].flags & df_bit, df_bit)
+
+ #
+ # Normal translation of TCP packets v6 -> v4 direction
+ # Send 128 frame size packet for IPv6/TCP.
+ # Received packet should be translated into an IPv4 packet with DF=1
+ #
+
+ def test_map_t_tcp_ip6_to_ip4(self):
+ """ MAP-T TCP IPv6 -> IPv4 """
+
+ eth = Ether(src=self.pg1.remote_mac,
+ dst=self.pg1.local_mac)
+ ip = IPv6(src=self.ipv6_cpe_address,
+ dst=self.ipv6_map_address)
+ tcp = TCP(sport=self.ipv6_udp_or_tcp_map_port,
+ dport=self.ipv6_udp_or_tcp_internet_port)
+ payload = "a" * 82
+ tx_pkt = eth / ip / tcp / payload
+
+ self.pg_send(self.pg1, tx_pkt * 1)
+
+ rx_pkts = self.pg0.get_capture(1)
+ rx_pkt = rx_pkts[0]
+
+ self.v4_address_check(rx_pkt)
+ self.v4_port_check(rx_pkt, TCP)
+ self.assertEqual(rx_pkt[IP].proto, IP(proto="tcp").proto)
+ self.assertEqual(rx_pkt[IP].tos, 0) # IPv6 TC passed to v4 ToS
+ df_bit = IP(flags="DF").flags
+ self.assertNotEqual(rx_pkt[IP].flags & df_bit, df_bit)
+
+ #
+ # Translation of ICMP Echo Request v4 -> v6 direction
+ # Received packet should be translated into an IPv6 Echo Request.
+ #
+
+ def test_map_t_echo_request_ip4_to_ip6(self):
+ """ MAP-T echo request IPv4 -> IPv6 """
+
+ eth = Ether(src=self.pg1.remote_mac,
+ dst=self.pg1.local_mac)
+ ip = IP(src=self.pg0.remote_ip4,
+ dst=self.ipv4_map_address)
+ icmp = ICMP(type="echo-request",
+ id=self.ipv6_udp_or_tcp_map_port)
+ payload = "H" * 10
+ tx_pkt = eth / ip / icmp / payload
+
+ self.pg_send(self.pg0, tx_pkt * 1)
+
+ rx_pkts = self.pg1.get_capture(1)
+ rx_pkt = rx_pkts[0]
+
+ self.assertEqual(rx_pkt[IPv6].nh, IPv6(nh="ICMPv6").nh)
+ self.assertEqual(rx_pkt[ICMPv6EchoRequest].type,
+ ICMPv6EchoRequest(type="Echo Request").type)
+ self.assertEqual(rx_pkt[ICMPv6EchoRequest].code, 0)
+ self.assertEqual(rx_pkt[ICMPv6EchoRequest].id,
+ self.ipv6_udp_or_tcp_map_port)
+
+ #
+ # Translation of ICMP Echo Reply v4 -> v6 direction
+ # Received packet should be translated into an IPv6 Echo Reply.
+ #
+
+ def test_map_t_echo_reply_ip4_to_ip6(self):
+ """ MAP-T echo reply IPv4 -> IPv6 """
+
+ eth = Ether(src=self.pg1.remote_mac,
+ dst=self.pg1.local_mac)
+ ip = IP(src=self.pg0.remote_ip4,
+ dst=self.ipv4_map_address)
+ icmp = ICMP(type="echo-reply",
+ id=self.ipv6_udp_or_tcp_map_port)
+ payload = "H" * 10
+ tx_pkt = eth / ip / icmp / payload
+
+ self.pg_send(self.pg0, tx_pkt * 1)
+
+ rx_pkts = self.pg1.get_capture(1)
+ rx_pkt = rx_pkts[0]
+
+ self.assertEqual(rx_pkt[IPv6].nh, IPv6(nh="ICMPv6").nh)
+ self.assertEqual(rx_pkt[ICMPv6EchoReply].type,
+ ICMPv6EchoReply(type="Echo Reply").type)
+ self.assertEqual(rx_pkt[ICMPv6EchoReply].code, 0)
+ self.assertEqual(rx_pkt[ICMPv6EchoReply].id,
+ self.ipv6_udp_or_tcp_map_port)
+
+ #
+ # Translation of ICMP Echo Request v6 -> v4 direction
+ # Received packet should be translated into an IPv4 Echo Request.
+ #
+
+ def test_map_t_echo_request_ip6_to_ip4(self):
+ """ MAP-T echo request IPv6 -> IPv4 """
+
+ eth = Ether(src=self.pg1.remote_mac,
+ dst=self.pg1.local_mac)
+ ip = IPv6(src=self.ipv6_cpe_address,
+ dst=self.ipv6_map_address)
+ icmp = ICMPv6EchoRequest()
+ icmp.id = self.ipv6_udp_or_tcp_map_port
+ payload = "H" * 10
+ tx_pkt = eth / ip / icmp / payload
+
+ self.pg_send(self.pg1, tx_pkt * 1)
+
+ rx_pkts = self.pg0.get_capture(1)
+ rx_pkt = rx_pkts[0]
+
+ self.assertEqual(rx_pkt[IP].proto, IP(proto="icmp").proto)
+ self.assertEqual(rx_pkt[ICMP].type, ICMP(type="echo-request").type)
+ self.assertEqual(rx_pkt[ICMP].code, 0)
+ self.assertEqual(rx_pkt[ICMP].id, self.ipv6_udp_or_tcp_map_port)
+
+ #
+ # Translation of ICMP Echo Reply v6 -> v4 direction
+ # Received packet should be translated into an IPv4 Echo Reply.
+ #
+
+ def test_map_t_echo_reply_ip6_to_ip4(self):
+ """ MAP-T echo reply IPv6 -> IPv4 """
+
+ eth = Ether(src=self.pg1.remote_mac,
+ dst=self.pg1.local_mac)
+ ip = IPv6(src=self.ipv6_cpe_address,
+ dst=self.ipv6_map_address)
+ icmp = ICMPv6EchoReply(id=self.ipv6_udp_or_tcp_map_port)
+ payload = "H" * 10
+ tx_pkt = eth / ip / icmp / payload
+
+ self.pg_send(self.pg1, tx_pkt * 1)
+
+ rx_pkts = self.pg0.get_capture(1)
+ rx_pkt = rx_pkts[0]
+
+ self.assertEqual(rx_pkt[IP].proto, IP(proto="icmp").proto)
+ self.assertEqual(rx_pkt[ICMP].type, ICMP(type="echo-reply").type)
+ self.assertEqual(rx_pkt[ICMP].code, 0)
+ self.assertEqual(rx_pkt[ICMP].id, self.ipv6_udp_or_tcp_map_port)
+