diff options
Diffstat (limited to 'test/test_ip6.py')
| -rw-r--r-- | test/test_ip6.py | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/test/test_ip6.py b/test/test_ip6.py index 700b3344a9e..1432858f38c 100644 --- a/test/test_ip6.py +++ b/test/test_ip6.py @@ -76,6 +76,31 @@ class TestIPv6ND(VppTestCase): dll = rx[ICMPv6NDOptDstLLAddr] self.assertEqual(dll.lladdr, intf.local_mac) + def validate_ns(self, intf, rx, tgt_ip): + nsma = in6_getnsma(inet_pton(AF_INET6, tgt_ip)) + dst_ip = inet_ntop(AF_INET6, nsma) + + # NS is broadcast + self.assertEqual(rx[Ether].dst, "ff:ff:ff:ff:ff:ff") + + # and from the router's MAC + self.assertEqual(rx[Ether].src, intf.local_mac) + + # the rx'd NS should be addressed to an mcast address + # derived from the target address + self.assertEqual(in6_ptop(rx[IPv6].dst), in6_ptop(dst_ip)) + + # expect the tgt IP in the NS header + ns = rx[ICMPv6ND_NS] + self.assertEqual(in6_ptop(ns.tgt), in6_ptop(tgt_ip)) + + # packet is from the router's local address + self.assertEqual(in6_ptop(rx[IPv6].src), intf.local_ip6) + + # Src link-layer options should have the router's MAC + sll = rx[ICMPv6NDOptSrcLLAddr] + self.assertEqual(sll.lladdr, intf.local_mac) + def send_and_expect_ra(self, intf, pkts, remark, dst_ip=None, filter_out_fn=is_ipv6_misc): intf.add_stream(pkts) @@ -99,6 +124,17 @@ class TestIPv6ND(VppTestCase): rx = rx[0] self.validate_na(intf, rx, dst_ip, tgt_ip) + def send_and_expect_ns(self, tx_intf, rx_intf, pkts, tgt_ip, + filter_out_fn=is_ipv6_misc): + tx_intf.add_stream(pkts) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + rx = rx_intf.get_capture(1, filter_out_fn=filter_out_fn) + + self.assertEqual(len(rx), 1) + rx = rx[0] + self.validate_ns(rx_intf, rx, tgt_ip) + def send_and_assert_no_replies(self, intf, pkts, remark): intf.add_stream(pkts) self.pg_enable_capture(self.pg_interfaces) @@ -107,6 +143,15 @@ class TestIPv6ND(VppTestCase): i.get_capture(0) i.assert_nothing_captured(remark=remark) + def verify_ip(self, rx, smac, dmac, sip, dip): + ether = rx[Ether] + self.assertEqual(ether.dst, dmac) + self.assertEqual(ether.src, smac) + + ip = rx[IPv6] + self.assertEqual(ip.src, sip) + self.assertEqual(ip.dst, dip) + class TestIPv6(TestIPv6ND): """ IPv6 Test Case """ @@ -444,6 +489,78 @@ class TestIPv6(TestIPv6ND): 128, inet=AF_INET6)) + def test_ns_duplicates(self): + """ ARP Duplicates""" + + # + # Generate some hosts on the LAN + # + self.pg1.generate_remote_hosts(3) + + # + # Add host 1 on pg1 and pg2 + # + ns_pg1 = VppNeighbor(self, + self.pg1.sw_if_index, + self.pg1.remote_hosts[1].mac, + self.pg1.remote_hosts[1].ip6, + af=AF_INET6) + ns_pg1.add_vpp_config() + ns_pg2 = VppNeighbor(self, + self.pg2.sw_if_index, + self.pg2.remote_mac, + self.pg1.remote_hosts[1].ip6, + af=AF_INET6) + ns_pg2.add_vpp_config() + + # + # IP packet destined for pg1 remote host arrives on pg1 again. + # + p = (Ether(dst=self.pg0.local_mac, + src=self.pg0.remote_mac) / + IPv6(src=self.pg0.remote_ip6, + dst=self.pg1.remote_hosts[1].ip6) / + UDP(sport=1234, dport=1234) / + Raw()) + + self.pg0.add_stream(p) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + rx1 = self.pg1.get_capture(1) + + self.verify_ip(rx1[0], + self.pg1.local_mac, + self.pg1.remote_hosts[1].mac, + self.pg0.remote_ip6, + self.pg1.remote_hosts[1].ip6) + + # + # remove the duplicate on pg1 + # packet stream shoud generate ARPs out of pg1 + # + ns_pg1.remove_vpp_config() + + self.send_and_expect_ns(self.pg0, self.pg1, + p, self.pg1.remote_hosts[1].ip6) + + # + # Add it back + # + ns_pg1.add_vpp_config() + + self.pg0.add_stream(p) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + rx1 = self.pg1.get_capture(1) + + self.verify_ip(rx1[0], + self.pg1.local_mac, + self.pg1.remote_hosts[1].mac, + self.pg0.remote_ip6, + self.pg1.remote_hosts[1].ip6) + def validate_ra(self, intf, rx, dst_ip=None, mtu=9000, pi_opt=None): if not dst_ip: dst_ip = intf.remote_ip6 |