diff options
Diffstat (limited to 'src/plugins/nat/test/test_nat44_ei.py')
| -rw-r--r-- | src/plugins/nat/test/test_nat44_ei.py | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/src/plugins/nat/test/test_nat44_ei.py b/src/plugins/nat/test/test_nat44_ei.py index da6ca4293c0..dcd7f46f073 100644 --- a/src/plugins/nat/test/test_nat44_ei.py +++ b/src/plugins/nat/test/test_nat44_ei.py @@ -3719,6 +3719,50 @@ class TestNAT44EI(MethodHolder): self.logger.info( self.vapi.cli("show nat44 ei addr-port-assignment-alg")) + def test_outside_address_distribution(self): + """ Outside address distribution based on source address """ + + x = 100 + nat_addresses = [] + + for i in range(1, x): + a = "10.0.0.%d" % i + nat_addresses.append(a) + + flags = self.config_flags.NAT44_EI_IF_INSIDE + self.vapi.nat44_ei_interface_add_del_feature( + sw_if_index=self.pg0.sw_if_index, + flags=flags, is_add=1) + self.vapi.nat44_ei_interface_add_del_feature( + sw_if_index=self.pg1.sw_if_index, + is_add=1) + + self.vapi.nat44_ei_add_del_address_range( + first_ip_address=nat_addresses[0], + last_ip_address=nat_addresses[-1], + vrf_id=0xFFFFFFFF, is_add=1) + + self.pg0.generate_remote_hosts(x) + + pkts = [] + for i in range(x): + p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / + IP(src=self.pg0.remote_hosts[i].ip4, + dst=self.pg1.remote_ip4) / + UDP(sport=7000+i, dport=80+i)) + pkts.append(p) + + self.pg0.add_stream(pkts) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + recvd = self.pg1.get_capture(len(pkts)) + for (p_sent, p_recvd) in zip(pkts, recvd): + packed = socket.inet_aton(p_sent[IP].src) + numeric = struct.unpack("!L", packed)[0] + numeric = socket.htonl(numeric) + a = nat_addresses[(numeric-1) % len(nat_addresses)] + self.assertEqual(a, p_recvd[IP].src, "Packet not translated") + class TestNAT44Out2InDPO(MethodHolder): """ NAT44EI Test Cases using out2in DPO """ |