X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=test%2Ftest_neighbor.py;h=a15106af1f9a70da439a0d883680b47bbf2579b7;hb=14260393;hp=565a8b4442db0ec6d7d6a15efdd4eeff3bd48b6c;hpb=b4c42cdc6bbbf464f3f0034b2b39d4e20fd23a25;p=vpp.git diff --git a/test/test_neighbor.py b/test/test_neighbor.py index 565a8b4442d..a15106af1f9 100644 --- a/test/test_neighbor.py +++ b/test/test_neighbor.py @@ -12,6 +12,7 @@ from scapy.packet import Raw from scapy.layers.l2 import Ether, ARP, Dot1Q from scapy.layers.inet import IP, UDP from scapy.contrib.mpls import MPLS +from scapy.layers.inet6 import IPv6 # not exported by scapy, so redefined here arp_opts = {"who-has": 1, "is-at": 2} @@ -132,16 +133,6 @@ class ARPTestCase(VppTestCase): self.assertEqual(ip.src, sip) self.assertEqual(ip.dst, dip) - def send_and_assert_no_replies(self, intf, pkts, remark): - intf.add_stream(pkts) - self.pg_enable_capture(self.pg_interfaces) - self.pg_start() - timeout = 1 - for i in self.pg_interfaces: - i.get_capture(0, timeout=timeout) - i.assert_nothing_captured(remark=remark) - timeout = 0.1 - def test_arp(self): """ ARP """ @@ -306,6 +297,10 @@ class ARPTestCase(VppTestCase): # self.pg2.set_unnumbered(self.pg1.sw_if_index) + unnum = self.vapi.ip_unnumbered_dump() + self.assertEqual(unnum[0].ip_sw_if_index, self.pg1.sw_if_index) + self.assertEqual(unnum[0].sw_if_index, self.pg2.sw_if_index) + # # We should respond to ARP requests for the unnumbered to address # once an attached route to the source is known @@ -1154,6 +1149,313 @@ class ARPTestCase(VppTestCase): self.pg2.unconfig_ip4() self.pg2.set_table_ip4(0) + def test_arp_incomplete(self): + """ ARP Incomplete""" + self.pg1.generate_remote_hosts(3) + + p0 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / + IP(src=self.pg0.remote_ip4, + dst=self.pg1.remote_hosts[1].ip4) / + UDP(sport=1234, dport=1234) / + Raw()) + p1 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / + IP(src=self.pg0.remote_ip4, + dst=self.pg1.remote_hosts[2].ip4) / + UDP(sport=1234, dport=1234) / + Raw()) + + # + # a packet to an unresolved destination generates an ARP request + # + rx = self.send_and_expect(self.pg0, [p0], self.pg1) + self.verify_arp_req(rx[0], + self.pg1.local_mac, + self.pg1.local_ip4, + self.pg1._remote_hosts[1].ip4) + + # + # add a neighbour for remote host 1 + # + static_arp = VppNeighbor(self, + self.pg1.sw_if_index, + self.pg1.remote_hosts[1].mac, + self.pg1.remote_hosts[1].ip4, + is_static=1) + static_arp.add_vpp_config() + + # + # change the interface's MAC + # + mac = [chr(0x00), chr(0x00), chr(0x00), + chr(0x33), chr(0x33), chr(0x33)] + mac_string = ''.join(mac) + + self.vapi.sw_interface_set_mac_address(self.pg1.sw_if_index, + mac_string) + + # + # now ARP requests come from the new source mac + # + rx = self.send_and_expect(self.pg0, [p1], self.pg1) + self.verify_arp_req(rx[0], + "00:00:00:33:33:33", + self.pg1.local_ip4, + self.pg1._remote_hosts[2].ip4) + + # + # packets to the resolved host also have the new source mac + # + rx = self.send_and_expect(self.pg0, [p0], self.pg1) + self.verify_ip(rx[0], + "00:00:00:33:33:33", + self.pg1.remote_hosts[1].mac, + self.pg0.remote_ip4, + self.pg1.remote_hosts[1].ip4) + + # + # set the mac address on the inteface that does not have a + # configured subnet and thus no glean + # + self.vapi.sw_interface_set_mac_address(self.pg2.sw_if_index, + mac_string) + + def test_garp(self): + """ GARP """ + + # + # Generate some hosts on the LAN + # + self.pg1.generate_remote_hosts(4) + + # + # And an ARP entry + # + arp = VppNeighbor(self, + self.pg1.sw_if_index, + self.pg1.remote_hosts[1].mac, + self.pg1.remote_hosts[1].ip4) + arp.add_vpp_config() + + self.assertTrue(find_nbr(self, + self.pg1.sw_if_index, + self.pg1.remote_hosts[1].ip4, + mac=self.pg1.remote_hosts[1].mac)) + + # + # Send a GARP (request) to swap the host 1's address to that of host 2 + # + p1 = (Ether(dst="ff:ff:ff:ff:ff:ff", + src=self.pg1.remote_hosts[2].mac) / + ARP(op="who-has", + hwdst=self.pg1.local_mac, + hwsrc=self.pg1.remote_hosts[2].mac, + pdst=self.pg1.remote_hosts[1].ip4, + psrc=self.pg1.remote_hosts[1].ip4)) + + self.pg1.add_stream(p1) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + self.assertTrue(find_nbr(self, + self.pg1.sw_if_index, + self.pg1.remote_hosts[1].ip4, + mac=self.pg1.remote_hosts[2].mac)) + + # + # Send a GARP (reply) to swap the host 1's address to that of host 3 + # + p1 = (Ether(dst="ff:ff:ff:ff:ff:ff", + src=self.pg1.remote_hosts[3].mac) / + ARP(op="is-at", + hwdst=self.pg1.local_mac, + hwsrc=self.pg1.remote_hosts[3].mac, + pdst=self.pg1.remote_hosts[1].ip4, + psrc=self.pg1.remote_hosts[1].ip4)) + + self.pg1.add_stream(p1) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + self.assertTrue(find_nbr(self, + self.pg1.sw_if_index, + self.pg1.remote_hosts[1].ip4, + mac=self.pg1.remote_hosts[3].mac)) + + # + # GARPs (requets nor replies) for host we don't know yet + # don't result in new neighbour entries + # + p1 = (Ether(dst="ff:ff:ff:ff:ff:ff", + src=self.pg1.remote_hosts[3].mac) / + ARP(op="who-has", + hwdst=self.pg1.local_mac, + hwsrc=self.pg1.remote_hosts[3].mac, + pdst=self.pg1.remote_hosts[2].ip4, + psrc=self.pg1.remote_hosts[2].ip4)) + + self.pg1.add_stream(p1) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + self.assertFalse(find_nbr(self, + self.pg1.sw_if_index, + self.pg1.remote_hosts[2].ip4)) + + p1 = (Ether(dst="ff:ff:ff:ff:ff:ff", + src=self.pg1.remote_hosts[3].mac) / + ARP(op="is-at", + hwdst=self.pg1.local_mac, + hwsrc=self.pg1.remote_hosts[3].mac, + pdst=self.pg1.remote_hosts[2].ip4, + psrc=self.pg1.remote_hosts[2].ip4)) + + self.pg1.add_stream(p1) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + self.assertFalse(find_nbr(self, + self.pg1.sw_if_index, + self.pg1.remote_hosts[2].ip4)) + + def test_arp_incomplete(self): + """ Incomplete Entries """ + + # + # ensure that we throttle the ARP requests + # + self.pg0.generate_remote_hosts(2) + + ip_10_0_0_1 = VppIpRoute(self, "10.0.0.1", 32, + [VppRoutePath(self.pg0.remote_hosts[1].ip4, + self.pg0.sw_if_index, + labels=[55])]) + ip_10_0_0_1.add_vpp_config() + + p1 = (Ether(dst=self.pg1.local_mac, + src=self.pg1.remote_mac) / + IP(src=self.pg1.remote_ip4, + dst="10.0.0.1") / + UDP(sport=1234, dport=1234) / + Raw()) + + self.pg1.add_stream(p1 * 257) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + rx = self.pg0._get_capture(1) + + # + # how many we get is going to be dependent on the time for packet + # processing but it should be small + # + self.assertTrue(len(rx) < 64) + + +class NeighborStatsTestCase(VppTestCase): + """ ARP Test Case """ + + def setUp(self): + super(NeighborStatsTestCase, self).setUp() + + self.create_pg_interfaces(range(2)) + + # pg0 configured with ip4 and 6 addresses used for input + # pg1 configured with ip4 and 6 addresses used for output + # pg2 is unnumbered to pg0 + for i in self.pg_interfaces: + i.admin_up() + i.config_ip4() + i.config_ip6() + i.resolve_arp() + i.resolve_ndp() + + def tearDown(self): + super(NeighborStatsTestCase, self).tearDown() + + for i in self.pg_interfaces: + i.unconfig_ip4() + i.unconfig_ip6() + i.admin_down() + + def test_arp_stats(self): + """ ARP Counters """ + + self.vapi.cli("adj counters enable") + self.pg1.generate_remote_hosts(2) + + arp1 = VppNeighbor(self, + self.pg1.sw_if_index, + self.pg1.remote_hosts[0].mac, + self.pg1.remote_hosts[0].ip4) + arp1.add_vpp_config() + arp2 = VppNeighbor(self, + self.pg1.sw_if_index, + self.pg1.remote_hosts[1].mac, + self.pg1.remote_hosts[1].ip4) + arp2.add_vpp_config() + + p1 = (Ether(dst=self.pg0.local_mac, + src=self.pg0.remote_mac) / + IP(src=self.pg0.remote_ip4, + dst=self.pg1.remote_hosts[0].ip4) / + UDP(sport=1234, dport=1234) / + Raw()) + p2 = (Ether(dst=self.pg0.local_mac, + src=self.pg0.remote_mac) / + IP(src=self.pg0.remote_ip4, + dst=self.pg1.remote_hosts[1].ip4) / + UDP(sport=1234, dport=1234) / + Raw()) + + rx = self.send_and_expect(self.pg0, p1 * 65, self.pg1) + rx = self.send_and_expect(self.pg0, p2 * 65, self.pg1) + + self.assertEqual(65, arp1.get_stats()['packets']) + self.assertEqual(65, arp2.get_stats()['packets']) + + rx = self.send_and_expect(self.pg0, p1 * 65, self.pg1) + self.assertEqual(130, arp1.get_stats()['packets']) + + def test_nd_stats(self): + """ ND Counters """ + + self.vapi.cli("adj counters enable") + self.pg0.generate_remote_hosts(3) + + nd1 = VppNeighbor(self, + self.pg0.sw_if_index, + self.pg0.remote_hosts[1].mac, + self.pg0.remote_hosts[1].ip6, + af=AF_INET6) + nd1.add_vpp_config() + nd2 = VppNeighbor(self, + self.pg0.sw_if_index, + self.pg0.remote_hosts[2].mac, + self.pg0.remote_hosts[2].ip6, + af=AF_INET6) + nd2.add_vpp_config() + + p1 = (Ether(dst=self.pg1.local_mac, + src=self.pg1.remote_mac) / + IPv6(src=self.pg1.remote_ip6, + dst=self.pg0.remote_hosts[1].ip6) / + UDP(sport=1234, dport=1234) / + Raw()) + p2 = (Ether(dst=self.pg1.local_mac, + src=self.pg1.remote_mac) / + IPv6(src=self.pg1.remote_ip6, + dst=self.pg0.remote_hosts[2].ip6) / + UDP(sport=1234, dport=1234) / + Raw()) + + rx = self.send_and_expect(self.pg1, p1 * 16, self.pg0) + rx = self.send_and_expect(self.pg1, p2 * 16, self.pg0) + + self.assertEqual(16, nd1.get_stats()['packets']) + self.assertEqual(16, nd2.get_stats()['packets']) + + rx = self.send_and_expect(self.pg1, p1 * 65, self.pg0) + self.assertEqual(81, nd1.get_stats()['packets']) + if __name__ == '__main__': unittest.main(testRunner=VppTestRunner)