X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=test%2Ftest_nat.py;h=d2bc4569af0616b85208c4f58e0f1688c0dacbb2;hb=e82488f10f20f464961c5c7b381b4a419bca0bbc;hp=5f6334ebb39e03d36a9cb77b2790a7c9e5132df3;hpb=c5c6a3342f3cbaaac647d52fd960b6f5b0fcd4e0;p=vpp.git diff --git a/test/test_nat.py b/test/test_nat.py index 5f6334ebb39..d2bc4569af0 100644 --- a/test/test_nat.py +++ b/test/test_nat.py @@ -989,6 +989,8 @@ class TestNAT44(MethodHolder): if self.pg7.has_ip4_config: self.pg7.unconfig_ip4() + self.vapi.nat44_forwarding_enable_disable(0) + interfaces = self.vapi.nat44_interface_addr_dump() for intf in interfaces: self.vapi.nat44_add_interface_addr(intf.sw_if_index, @@ -1027,6 +1029,7 @@ class TestNAT44(MethodHolder): vrf_id=sm.vrf_id, protocol=sm.protocol, twice_nat=sm.twice_nat, + out2in_only=sm.out2in_only, is_add=0) lb_static_mappings = self.vapi.nat44_lb_static_mapping_dump() @@ -1037,6 +1040,7 @@ class TestNAT44(MethodHolder): lb_sm.protocol, vrf_id=lb_sm.vrf_id, twice_nat=lb_sm.twice_nat, + out2in_only=lb_sm.out2in_only, is_add=0, local_num=0, locals=[]) @@ -1065,7 +1069,7 @@ class TestNAT44(MethodHolder): def nat44_add_static_mapping(self, local_ip, external_ip='0.0.0.0', local_port=0, external_port=0, vrf_id=0, is_add=1, external_sw_if_index=0xFFFFFFFF, - proto=0, twice_nat=0): + proto=0, twice_nat=0, out2in_only=0): """ Add/delete NAT44 static mapping @@ -1078,6 +1082,7 @@ class TestNAT44(MethodHolder): :param external_sw_if_index: External interface instead of IP address :param proto: IP protocol (Mandatory if port specified) :param twice_nat: 1 if translate external host address and port + :param out2in_only: if 1 rule is matching only out2in direction """ addr_only = 1 if local_port and external_port: @@ -1094,6 +1099,7 @@ class TestNAT44(MethodHolder): vrf_id, proto, twice_nat, + out2in_only, is_add) def nat44_add_address(self, ip, is_add=1, vrf_id=0xFFFFFFFF, twice_nat=0): @@ -1490,6 +1496,102 @@ class TestNAT44(MethodHolder): capture = self.pg1.get_capture(len(pkts)) self.verify_capture_out(capture) + def test_static_with_port_out2(self): + """ 1:1 NAPT symmetrical rule """ + + external_port = 80 + local_port = 8080 + + self.vapi.nat44_forwarding_enable_disable(1) + self.nat44_add_static_mapping(self.pg0.remote_ip4, self.nat_addr, + local_port, external_port, + proto=IP_PROTOS.tcp, out2in_only=1) + self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index) + self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index, + is_inside=0) + + # from client to service + p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) / + IP(src=self.pg1.remote_ip4, dst=self.nat_addr) / + TCP(sport=12345, dport=external_port)) + self.pg1.add_stream(p) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + capture = self.pg0.get_capture(1) + p = capture[0] + server = None + try: + ip = p[IP] + tcp = p[TCP] + self.assertEqual(ip.dst, self.pg0.remote_ip4) + self.assertEqual(tcp.dport, local_port) + self.check_tcp_checksum(p) + self.check_ip_checksum(p) + except: + self.logger.error(ppp("Unexpected or invalid packet:", p)) + raise + + # from service back to client + p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / + IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) / + TCP(sport=local_port, dport=12345)) + self.pg0.add_stream(p) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + capture = self.pg1.get_capture(1) + p = capture[0] + try: + ip = p[IP] + tcp = p[TCP] + self.assertEqual(ip.src, self.nat_addr) + self.assertEqual(tcp.sport, external_port) + self.check_tcp_checksum(p) + self.check_ip_checksum(p) + except: + self.logger.error(ppp("Unexpected or invalid packet:", p)) + raise + + # from client to server (no translation) + p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) / + IP(src=self.pg1.remote_ip4, dst=self.pg0.remote_ip4) / + TCP(sport=12346, dport=local_port)) + self.pg1.add_stream(p) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + capture = self.pg0.get_capture(1) + p = capture[0] + server = None + try: + ip = p[IP] + tcp = p[TCP] + self.assertEqual(ip.dst, self.pg0.remote_ip4) + self.assertEqual(tcp.dport, local_port) + self.check_tcp_checksum(p) + self.check_ip_checksum(p) + except: + self.logger.error(ppp("Unexpected or invalid packet:", p)) + raise + + # from service back to client (no translation) + p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / + IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) / + TCP(sport=local_port, dport=12346)) + self.pg0.add_stream(p) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + capture = self.pg1.get_capture(1) + p = capture[0] + try: + ip = p[IP] + tcp = p[TCP] + self.assertEqual(ip.src, self.pg0.remote_ip4) + self.assertEqual(tcp.sport, local_port) + self.check_tcp_checksum(p) + self.check_ip_checksum(p) + except: + self.logger.error(ppp("Unexpected or invalid packet:", p)) + raise + def test_static_vrf_aware(self): """ 1:1 NAT VRF awareness """ @@ -1644,6 +1746,118 @@ class TestNAT44(MethodHolder): server2_n += 1 self.assertTrue(server1_n > server2_n) + def test_static_lb_2(self): + """ NAT44 local service load balancing (asymmetrical rule) """ + external_addr_n = socket.inet_pton(socket.AF_INET, self.nat_addr) + external_port = 80 + local_port = 8080 + server1 = self.pg0.remote_hosts[0] + server2 = self.pg0.remote_hosts[1] + + locals = [{'addr': server1.ip4n, + 'port': local_port, + 'probability': 70}, + {'addr': server2.ip4n, + 'port': local_port, + 'probability': 30}] + + self.vapi.nat44_forwarding_enable_disable(1) + self.vapi.nat44_add_del_lb_static_mapping(external_addr_n, + external_port, + IP_PROTOS.tcp, + out2in_only=1, + local_num=len(locals), + locals=locals) + self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index) + self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index, + is_inside=0) + + # from client to service + p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) / + IP(src=self.pg1.remote_ip4, dst=self.nat_addr) / + TCP(sport=12345, dport=external_port)) + self.pg1.add_stream(p) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + capture = self.pg0.get_capture(1) + p = capture[0] + server = None + try: + ip = p[IP] + tcp = p[TCP] + self.assertIn(ip.dst, [server1.ip4, server2.ip4]) + if ip.dst == server1.ip4: + server = server1 + else: + server = server2 + self.assertEqual(tcp.dport, local_port) + self.check_tcp_checksum(p) + self.check_ip_checksum(p) + except: + self.logger.error(ppp("Unexpected or invalid packet:", p)) + raise + + # from service back to client + p = (Ether(src=server.mac, dst=self.pg0.local_mac) / + IP(src=server.ip4, dst=self.pg1.remote_ip4) / + TCP(sport=local_port, dport=12345)) + self.pg0.add_stream(p) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + capture = self.pg1.get_capture(1) + p = capture[0] + try: + ip = p[IP] + tcp = p[TCP] + self.assertEqual(ip.src, self.nat_addr) + self.assertEqual(tcp.sport, external_port) + self.check_tcp_checksum(p) + self.check_ip_checksum(p) + except: + self.logger.error(ppp("Unexpected or invalid packet:", p)) + raise + + # from client to server (no translation) + p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) / + IP(src=self.pg1.remote_ip4, dst=server1.ip4) / + TCP(sport=12346, dport=local_port)) + self.pg1.add_stream(p) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + capture = self.pg0.get_capture(1) + p = capture[0] + server = None + try: + ip = p[IP] + tcp = p[TCP] + self.assertEqual(ip.dst, server1.ip4) + self.assertEqual(tcp.dport, local_port) + self.check_tcp_checksum(p) + self.check_ip_checksum(p) + except: + self.logger.error(ppp("Unexpected or invalid packet:", p)) + raise + + # from service back to client (no translation) + p = (Ether(src=server1.mac, dst=self.pg0.local_mac) / + IP(src=server1.ip4, dst=self.pg1.remote_ip4) / + TCP(sport=local_port, dport=12346)) + self.pg0.add_stream(p) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + capture = self.pg1.get_capture(1) + p = capture[0] + try: + ip = p[IP] + tcp = p[TCP] + self.assertEqual(ip.src, server1.ip4) + self.assertEqual(tcp.sport, local_port) + self.check_tcp_checksum(p) + self.check_ip_checksum(p) + except: + self.logger.error(ppp("Unexpected or invalid packet:", p)) + raise + def test_multiple_inside_interfaces(self): """ NAT44 multiple non-overlapping address space inside interfaces """ @@ -1908,7 +2122,7 @@ class TestNAT44(MethodHolder): self.assertEqual(tcp.dport, host_in_port) self.check_tcp_checksum(p) except: - self.logger.error(ppp("Unexpected or invalid packet:"), p) + self.logger.error(ppp("Unexpected or invalid packet:", p)) raise def test_hairpinning2(self): @@ -2967,7 +3181,7 @@ class TestNAT44(MethodHolder): self.assertEqual(tcp.dport, host_in_port) self.check_tcp_checksum(p) except: - self.logger.error(ppp("Unexpected or invalid packet:"), p) + self.logger.error(ppp("Unexpected or invalid packet:", p)) raise def test_one_armed_nat44(self):