TEST:add l2bd nd term tests

Change-Id: I67633175d50a70a0b8ae4f85c659b93070f8e1fb
Signed-off-by: Eyal Bari <ebari@cisco.com>

1 files changed, 119 insertions, 6 deletions

diff --git a/test/test_l2bd_arp_term.py b/test/test_l2bd_arp_term.py
index 52c1ad32..80a7ff84 100644
--- a/test/test_l2bd_arp_term.py
+++ b/test/test_l2bd_arp_term.py
@@ -5,9 +5,18 @@ import unittest
 import random
 import copy
 
+from socket import AF_INET6
+
 from scapy.packet import Raw
 from scapy.layers.l2 import Ether, ARP
 from scapy.layers.inet import IP
+from scapy.utils import inet_pton, inet_ntop
+from scapy.utils6 import in6_getnsma, in6_getnsmac, in6_ptop, in6_islladdr, \
+    in6_mactoifaceid, in6_ismaddr
+from scapy.layers.inet6 import IPv6, UDP, ICMPv6ND_NS, ICMPv6ND_RS, \
+    ICMPv6ND_RA, ICMPv6NDOptSrcLLAddr, getmacbyip6, ICMPv6MRD_Solicitation, \
+    ICMPv6NDOptMTU, ICMPv6NDOptSrcLLAddr, ICMPv6NDOptPrefixInfo, \
+    ICMPv6ND_NA, ICMPv6NDOptDstLLAddr, ICMPv6DestUnreach, icmp6types
 
 from framework import VppTestCase, VppTestRunner
 from util import Host, ppp, mactobinary
@@ -58,12 +67,13 @@ class TestL2bdArpTerm(VppTestCase):
             self.logger.info(self.vapi.ppcli("show l2fib verbose"))
             self.logger.info(self.vapi.ppcli("show bridge-domain 1 detail"))
 
-    def add_del_arp_term_hosts(self, entries, bd_id=1, is_add=1):
+    def add_del_arp_term_hosts(self, entries, bd_id=1, is_add=1, is_ipv6=0):
         for e in entries:
+            ip = e.ip4n if is_ipv6 == 0 else e.ip6n
             self.vapi.bd_ip_mac_add_del(bd_id=bd_id,
                                         mac=e.bin_mac,
-                                        ip=e.ip4n,
-                                        is_ipv6=0,
+                                        ip=ip,
+                                        is_ipv6=is_ipv6,
                                         is_add=is_add)
 
     @classmethod
@@ -81,6 +91,16 @@ class TestL2bdArpTerm(VppTestCase):
                 for j in range(len(mac_list))}
 
     @classmethod
+    def ip6_host(cls, subnet, host, mac):
+        return Host(mac=mac,
+                    ip6="fd01:%x::%x" % (subnet, host))
+
+    @classmethod
+    def ip6_hosts(cls, subnet, start, mac_list):
+        return {cls.ip6_host(subnet, start + j, mac_list[j])
+                for j in range(len(mac_list))}
+
+    @classmethod
     def bd_swifs(cls, b):
         n = cls.ifs_per_bd
         start = (b - 1) * n
@@ -108,7 +128,7 @@ class TestL2bdArpTerm(VppTestCase):
     def arp_reqs(cls, src_host, entries):
         return [cls.arp(src_host, e) for e in entries]
 
-    def response_host(self, src_host, arp_resp):
+    def arp_resp_host(self, src_host, arp_resp):
         ether = arp_resp[Ether]
         self.assertEqual(ether.dst, src_host.mac)
 
@@ -121,10 +141,37 @@ class TestL2bdArpTerm(VppTestCase):
         self.assertEqual(arp.op, arp_opts["is-at"])
         self.assertEqual(arp.hwdst, src_host.mac)
         self.assertEqual(arp.pdst, src_host.ip4)
-        return Host(arp.hwsrc, arp.psrc)
+        return Host(mac=arp.hwsrc, ip4=arp.psrc)
 
     def arp_resp_hosts(self, src_host, pkts):
-        return {self.response_host(src_host, p) for p in pkts}
+        return {self.arp_resp_host(src_host, p) for p in pkts}
+
+    @classmethod
+    def ns_req(cls, src_host, host):
+        nsma = in6_getnsma(inet_pton(AF_INET6, "fd10::ffff"))
+        d = inet_ntop(AF_INET6, nsma)
+        return (Ether(dst="ff:ff:ff:ff:ff:ff", src=src_host.mac) /
+                IPv6(dst=d, src=src_host.ip6) /
+                ICMPv6ND_NS(tgt=host.ip6) /
+                ICMPv6NDOptSrcLLAddr(lladdr=src_host.mac))
+
+    @classmethod
+    def ns_reqs(cls, src_host, entries):
+        return [cls.ns_req(src_host, e) for e in entries]
+
+    def na_resp_host(self, src_host, rx):
+        self.assertEqual(rx[Ether].dst, src_host.mac)
+        self.assertEqual(in6_ptop(rx[IPv6].dst),
+                         in6_ptop(src_host.ip6))
+
+        self.assertTrue(rx.haslayer(ICMPv6ND_NA))
+        self.assertTrue(rx.haslayer(ICMPv6NDOptDstLLAddr))
+
+        na = rx[ICMPv6ND_NA]
+        return Host(mac=na.lladdr, ip6=na.tgt)
+
+    def na_resp_hosts(self, src_host, pkts):
+        return {self.na_resp_host(src_host, p) for p in pkts}
 
     def set_bd_flags(self, bd_id, **args):
         """
@@ -167,6 +214,20 @@ class TestL2bdArpTerm(VppTestCase):
             resps = self.arp_resp_hosts(src_host, resp_pkts)
             self.assertEqual(len(resps ^ resp_hosts), 0)
 
+    def verify_nd(self, src_host, req_hosts, resp_hosts, bd_id=1):
+        reqs = self.ns_reqs(src_host, req_hosts)
+
+        for swif in self.bd_swifs(bd_id):
+            swif.add_stream(reqs)
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        for swif in self.bd_swifs(bd_id):
+            resp_pkts = swif.get_capture(len(resp_hosts))
+            resps = self.na_resp_hosts(src_host, resp_pkts)
+            self.assertEqual(len(resps ^ resp_hosts), 0)
+
     def test_l2bd_arp_term_01(self):
         """ L2BD arp term - add 5 hosts, verify arp responses
         """
@@ -234,6 +295,58 @@ class TestL2bdArpTerm(VppTestCase):
         self.verify_arp(src_host, hosts1, hosts2)
         self.bd_add_del(1, is_add=0)
 
+    def test_l2bd_arp_term_06(self):
+        """ L2BD arp/ND term - hosts with both ip4/ip6
+        """
+        src_host4 = self.ip4_host(50, 50, "00:00:11:22:33:44")
+        src_host6 = self.ip6_host(50, 50, "00:00:11:22:33:44")
+        self.bd_add_del(1, is_add=1)
+        # enable flood to make sure requests are not flooded
+        self.set_bd_flags(1, arp_term=True, flood=True,
+                          uu_flood=False, learn=False)
+        macs = self.mac_list(range(10, 20))
+        hosts6 = self.ip6_hosts(5, 1, macs)
+        hosts4 = self.ip4_hosts(5, 1, macs)
+        self.add_del_arp_term_hosts(hosts4, is_add=1)
+        self.add_del_arp_term_hosts(hosts6, is_add=1, is_ipv6=1)
+        self.verify_arp(src_host4, hosts4, hosts4)
+        self.verify_nd(src_host6, hosts6, hosts6)
+        self.bd_add_del(1, is_add=0)
+
+    def test_l2bd_arp_term_07(self):
+        """ L2BD ND term - Add and Del hosts, verify ND replies
+        """
+        src_host6 = self.ip6_host(50, 50, "00:00:11:22:33:44")
+        self.bd_add_del(1, is_add=1)
+        self.set_bd_flags(1, arp_term=True, flood=False,
+                          uu_flood=False, learn=False)
+        macs = self.mac_list(range(10, 20))
+        hosts6 = self.ip6_hosts(5, 1, macs)
+        self.add_del_arp_term_hosts(hosts6, is_add=1, is_ipv6=1)
+        self.verify_nd(src_host6, hosts6, hosts6)
+        del_macs = self.mac_list(range(10, 15))
+        deleted = self.ip6_hosts(5, 1, del_macs)
+        self.add_del_arp_term_hosts(deleted, is_add=0, is_ipv6=1)
+        self.verify_nd(src_host6, hosts6, hosts6 - deleted)
+        self.bd_add_del(1, is_add=0)
+
+    def test_l2bd_arp_term_08(self):
+        """ L2BD ND term - Add and update IP+mac, verify ND replies
+        """
+        src_host = self.ip6_host(50, 50, "00:00:11:22:33:44")
+        self.bd_add_del(1, is_add=1)
+        self.set_bd_flags(1, arp_term=True, flood=False,
+                          uu_flood=False, learn=False)
+        macs1 = self.mac_list(range(10, 20))
+        hosts = self.ip6_hosts(5, 1, macs1)
+        self.add_del_arp_term_hosts(hosts, is_add=1, is_ipv6=1)
+        self.verify_nd(src_host, hosts, hosts)
+        macs2 = self.mac_list(range(20, 30))
+        updated = self.ip6_hosts(5, 1, macs2)
+        self.add_del_arp_term_hosts(updated, is_add=1, is_ipv6=1)
+        self.verify_nd(src_host, hosts, updated)
+        self.bd_add_del(1, is_add=0)
+
 
 if __name__ == '__main__':
     unittest.main(testRunner=VppTestRunner)