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-rw-r--r--test/test_nat.py105
-rw-r--r--test/vpp_papi_provider.py5
2 files changed, 106 insertions, 4 deletions
diff --git a/test/test_nat.py b/test/test_nat.py
index 384ec8f273e..d2bc4569af0 100644
--- a/test/test_nat.py
+++ b/test/test_nat.py
@@ -1029,6 +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()
@@ -1068,7 +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
@@ -1081,6 +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:
@@ -1097,6 +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):
@@ -1493,6 +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 """
@@ -2023,7 +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):
@@ -3082,7 +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):
diff --git a/test/vpp_papi_provider.py b/test/vpp_papi_provider.py
index 6e6f7caf287..13dccc9283b 100644
--- a/test/vpp_papi_provider.py
+++ b/test/vpp_papi_provider.py
@@ -1235,6 +1235,7 @@ class VppPapiProvider(object):
vrf_id=0,
protocol=0,
twice_nat=0,
+ out2in_only=0,
is_add=1):
"""Add/delete NAT44 static mapping
@@ -1247,6 +1248,7 @@ class VppPapiProvider(object):
:param vrf_id: VRF ID
:param protocol: IP protocol (Default value = 0)
:param twice_nat: 1 if translate external host address and port
+ :param out2in_only: if 1 rule is matching only out2in direction
:param is_add: 1 if add, 0 if delete (Default value = 1)
"""
return self.api(
@@ -1260,7 +1262,8 @@ class VppPapiProvider(object):
'external_sw_if_index': external_sw_if_index,
'vrf_id': vrf_id,
'protocol': protocol,
- 'twice_nat': twice_nat})
+ 'twice_nat': twice_nat,
+ 'out2in_only': out2in_only})
def nat44_add_del_identity_mapping(
self,