X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=test%2Ftest_ip4.py;h=e9ec71a2830e9fbfb1d9d5e79ccfe1153d0d8544;hb=97748ca;hp=3fe61e266bee84a0d001f1e4a3ae2d69f0d2d3e6;hpb=227038a444b98f922b4a4f44b85ae60f9ee86e1c;p=vpp.git diff --git a/test/test_ip4.py b/test/test_ip4.py index 3fe61e266be..e9ec71a2830 100644 --- a/test/test_ip4.py +++ b/test/test_ip4.py @@ -6,12 +6,14 @@ import unittest from framework import VppTestCase, VppTestRunner from vpp_sub_interface import VppSubInterface, VppDot1QSubint, VppDot1ADSubint from vpp_ip_route import VppIpRoute, VppRoutePath, VppIpMRoute, \ - VppMRoutePath, MRouteItfFlags, MRouteEntryFlags + VppMRoutePath, MRouteItfFlags, MRouteEntryFlags, VppMplsIpBind, \ + VppMplsTable, VppIpTable from scapy.packet import Raw from scapy.layers.l2 import Ether, Dot1Q, ARP -from scapy.layers.inet import IP, UDP, ICMP, icmptypes, icmpcodes +from scapy.layers.inet import IP, UDP, TCP, ICMP, icmptypes, icmpcodes from util import ppp +from scapy.contrib.mpls import MPLS class TestIPv4(VppTestCase): @@ -34,7 +36,6 @@ class TestIPv4(VppTestCase): :ivar list interfaces: pg interfaces and subinterfaces. :ivar dict flows: IPv4 packet flows in test. - :ivar list pg_if_packet_sizes: packet sizes in test. """ super(TestIPv4, self).setUp() @@ -53,8 +54,7 @@ class TestIPv4(VppTestCase): self.flows[self.pg2.sub_if] = [self.pg0, self.pg1.sub_if] # packet sizes - self.pg_if_packet_sizes = [64, 512, 1518, 9018] - self.sub_if_packet_sizes = [64, 512, 1518 + 4, 9018 + 4] + self.pg_if_packet_sizes = [64, 1500, 9020] self.interfaces = list(self.pg_interfaces) self.interfaces.extend(self.sub_interfaces) @@ -101,34 +101,52 @@ class TestIPv4(VppTestCase): (count, percent)) percent += 1 - def create_stream(self, src_if, packet_sizes): + def modify_packet(self, src_if, packet_size, pkt): + """Add load, set destination IP and extend packet to required packet + size for defined interface. + + :param VppInterface src_if: Interface to create packet for. + :param int packet_size: Required packet size. + :param Scapy pkt: Packet to be modified. + """ + dst_if_idx = packet_size / 10 % 2 + dst_if = self.flows[src_if][dst_if_idx] + info = self.create_packet_info(src_if, dst_if) + payload = self.info_to_payload(info) + p = pkt/Raw(payload) + p[IP].dst = dst_if.remote_ip4 + info.data = p.copy() + if isinstance(src_if, VppSubInterface): + p = src_if.add_dot1_layer(p) + self.extend_packet(p, packet_size) + + return p + + def create_stream(self, src_if): """Create input packet stream for defined interface. :param VppInterface src_if: Interface to create packet stream for. - :param list packet_sizes: Required packet sizes. """ - pkts = [] - for i in range(0, 257): - dst_if = self.flows[src_if][i % 2] - info = self.create_packet_info(src_if, dst_if) - payload = self.info_to_payload(info) - p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) / - IP(src=src_if.remote_ip4, dst=dst_if.remote_ip4) / - UDP(sport=1234, dport=1234) / - Raw(payload)) - info.data = p.copy() - if isinstance(src_if, VppSubInterface): - p = src_if.add_dot1_layer(p) - size = packet_sizes[(i // 2) % len(packet_sizes)] - self.extend_packet(p, size) - pkts.append(p) + hdr_ext = 4 if isinstance(src_if, VppSubInterface) else 0 + pkt_tmpl = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) / + IP(src=src_if.remote_ip4) / + UDP(sport=1234, dport=1234)) + + pkts = [self.modify_packet(src_if, i, pkt_tmpl) + for i in xrange(self.pg_if_packet_sizes[0], + self.pg_if_packet_sizes[1], 10)] + pkts_b = [self.modify_packet(src_if, i, pkt_tmpl) + for i in xrange(self.pg_if_packet_sizes[1] + hdr_ext, + self.pg_if_packet_sizes[2] + hdr_ext, 50)] + pkts.extend(pkts_b) + return pkts def verify_capture(self, dst_if, capture): """Verify captured input packet stream for defined interface. :param VppInterface dst_if: Interface to verify captured packet stream - for. + for. :param list capture: Captured packet stream. """ self.logger.info("Verifying capture on interface %s" % dst_if.name) @@ -181,15 +199,15 @@ class TestIPv4(VppTestCase): Test scenario: - Create IPv4 stream for pg0 interface - - Create IPv4 tagged streams for pg1's and pg2's subinterface. + - Create IPv4 tagged streams for pg1's and pg2's sub-interface. - Send and verify received packets on each interface. """ - pkts = self.create_stream(self.pg0, self.pg_if_packet_sizes) + pkts = self.create_stream(self.pg0) self.pg0.add_stream(pkts) for i in self.sub_interfaces: - pkts = self.create_stream(i, self.sub_if_packet_sizes) + pkts = self.create_stream(i) i.parent.add_stream(pkts) self.pg_enable_capture(self.pg_interfaces) @@ -203,6 +221,66 @@ class TestIPv4(VppTestCase): self.verify_capture(i, pkts) +class TestICMPEcho(VppTestCase): + """ ICMP Echo Test Case """ + + def setUp(self): + super(TestICMPEcho, self).setUp() + + # create 1 pg interface + self.create_pg_interfaces(range(1)) + + for i in self.pg_interfaces: + i.admin_up() + i.config_ip4() + i.resolve_arp() + + def tearDown(self): + super(TestICMPEcho, self).tearDown() + for i in self.pg_interfaces: + i.unconfig_ip4() + i.admin_down() + + def test_icmp_echo(self): + """ VPP replies to ICMP Echo Request + + Test scenario: + + - Receive ICMP Echo Request message on pg0 interface. + - Check outgoing ICMP Echo Reply message on pg0 interface. + """ + + icmp_id = 0xb + icmp_seq = 5 + icmp_load = '\x0a' * 18 + p_echo_request = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) / + ICMP(id=icmp_id, seq=icmp_seq) / + Raw(load=icmp_load)) + + self.pg0.add_stream(p_echo_request) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + rx = self.pg0.get_capture(1) + rx = rx[0] + ether = rx[Ether] + ipv4 = rx[IP] + icmp = rx[ICMP] + + self.assertEqual(ether.src, self.pg0.local_mac) + self.assertEqual(ether.dst, self.pg0.remote_mac) + + self.assertEqual(ipv4.src, self.pg0.local_ip4) + self.assertEqual(ipv4.dst, self.pg0.remote_ip4) + + self.assertEqual(icmptypes[icmp.type], "echo-reply") + self.assertEqual(icmp.id, icmp_id) + self.assertEqual(icmp.seq, icmp_seq) + self.assertEqual(icmp[Raw].load, icmp_load) + + class TestIPv4FibCrud(VppTestCase): """ FIB - add/update/delete - ip4 routes @@ -474,7 +552,7 @@ class TestIPNull(VppTestCase): super(TestIPNull, self).setUp() # create 2 pg interfaces - self.create_pg_interfaces(range(1)) + self.create_pg_interfaces(range(2)) for i in self.pg_interfaces: i.admin_up() @@ -546,6 +624,32 @@ class TestIPNull(VppTestCase): self.assertEqual(icmp.src, self.pg0.remote_ip4) self.assertEqual(icmp.dst, "10.0.0.2") + def test_ip_drop(self): + """ IP Drop Routes """ + + p = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(src=self.pg0.remote_ip4, dst="1.1.1.1") / + UDP(sport=1234, dport=1234) / + Raw('\xa5' * 100)) + + r1 = VppIpRoute(self, "1.1.1.0", 24, + [VppRoutePath(self.pg1.remote_ip4, + self.pg1.sw_if_index)]) + r1.add_vpp_config() + + rx = self.send_and_expect(self.pg0, p * 65, self.pg1) + + # + # insert a more specific as a drop + # + r2 = VppIpRoute(self, "1.1.1.1", 32, [], is_drop=1) + r2.add_vpp_config() + + self.send_and_assert_no_replies(self.pg0, p * 65, "Drop Route") + r2.remove_vpp_config() + rx = self.send_and_expect(self.pg0, p * 65, self.pg1) + class TestIPDisabled(VppTestCase): """ IPv4 disabled """ @@ -570,14 +674,6 @@ class TestIPDisabled(VppTestCase): i.unconfig_ip4() i.admin_down() - def send_and_assert_no_replies(self, intf, pkts, remark): - intf.add_stream(pkts) - self.pg_enable_capture(self.pg_interfaces) - self.pg_start() - for i in self.pg_interfaces: - i.get_capture(0) - i.assert_nothing_captured(remark=remark) - def test_ip_disabled(self): """ IP Disabled """ @@ -665,14 +761,6 @@ class TestIPSubNets(VppTestCase): for i in self.pg_interfaces: i.admin_down() - def send_and_assert_no_replies(self, intf, pkts, remark): - intf.add_stream(pkts) - self.pg_enable_capture(self.pg_interfaces) - self.pg_start() - for i in self.pg_interfaces: - i.get_capture(0) - i.assert_nothing_captured(remark=remark) - def test_ip_sub_nets(self): """ IP Sub Nets """ @@ -773,17 +861,21 @@ class TestIPLoadBalance(VppTestCase): super(TestIPLoadBalance, self).setUp() self.create_pg_interfaces(range(5)) + mpls_tbl = VppMplsTable(self, 0) + mpls_tbl.add_vpp_config() for i in self.pg_interfaces: i.admin_up() i.config_ip4() i.resolve_arp() + i.enable_mpls() def tearDown(self): - super(TestIPLoadBalance, self).tearDown() for i in self.pg_interfaces: + i.disable_mpls() i.unconfig_ip4() i.admin_down() + super(TestIPLoadBalance, self).tearDown() def send_and_expect_load_balancing(self, input, pkts, outputs): input.add_stream(pkts) @@ -793,30 +885,49 @@ class TestIPLoadBalance(VppTestCase): rx = oo._get_capture(1) self.assertNotEqual(0, len(rx)) + def send_and_expect_one_itf(self, input, pkts, itf): + input.add_stream(pkts) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + rx = itf.get_capture(len(pkts)) + def test_ip_load_balance(self): """ IP Load-Balancing """ # # An array of packets that differ only in the destination port # - port_pkts = [] + port_ip_pkts = [] + port_mpls_pkts = [] # # An array of packets that differ only in the source address # - src_pkts = [] + src_ip_pkts = [] + src_mpls_pkts = [] for ii in range(65): - port_pkts.append((Ether(src=self.pg0.remote_mac, - dst=self.pg0.local_mac) / - IP(dst="10.0.0.1", src="20.0.0.1") / - UDP(sport=1234, dport=1234 + ii) / - Raw('\xa5' * 100))) - src_pkts.append((Ether(src=self.pg0.remote_mac, - dst=self.pg0.local_mac) / - IP(dst="10.0.0.1", src="20.0.0.%d" % ii) / - UDP(sport=1234, dport=1234) / - Raw('\xa5' * 100))) + port_ip_hdr = (IP(dst="10.0.0.1", src="20.0.0.1") / + UDP(sport=1234, dport=1234 + ii) / + Raw('\xa5' * 100)) + port_ip_pkts.append((Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + port_ip_hdr)) + port_mpls_pkts.append((Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + MPLS(label=66, ttl=2) / + port_ip_hdr)) + + src_ip_hdr = (IP(dst="10.0.0.1", src="20.0.0.%d" % ii) / + UDP(sport=1234, dport=1234) / + Raw('\xa5' * 100)) + src_ip_pkts.append((Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + src_ip_hdr)) + src_mpls_pkts.append((Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + MPLS(label=66, ttl=2) / + src_ip_hdr)) route_10_0_0_1 = VppIpRoute(self, "10.0.0.1", 32, [VppRoutePath(self.pg1.remote_ip4, @@ -825,6 +936,9 @@ class TestIPLoadBalance(VppTestCase): self.pg2.sw_if_index)]) route_10_0_0_1.add_vpp_config() + binding = VppMplsIpBind(self, 66, "10.0.0.1", 32) + binding.add_vpp_config() + # # inject the packet on pg0 - expect load-balancing across the 2 paths # - since the default hash config is to use IP src,dst and port @@ -834,9 +948,13 @@ class TestIPLoadBalance(VppTestCase): # be guaranteed. But wuth 64 different packets we do expect some # balancing. So instead just ensure there is traffic on each link. # - self.send_and_expect_load_balancing(self.pg0, port_pkts, + self.send_and_expect_load_balancing(self.pg0, port_ip_pkts, [self.pg1, self.pg2]) - self.send_and_expect_load_balancing(self.pg0, src_pkts, + self.send_and_expect_load_balancing(self.pg0, src_ip_pkts, + [self.pg1, self.pg2]) + self.send_and_expect_load_balancing(self.pg0, port_mpls_pkts, + [self.pg1, self.pg2]) + self.send_and_expect_load_balancing(self.pg0, src_mpls_pkts, [self.pg1, self.pg2]) # @@ -846,14 +964,12 @@ class TestIPLoadBalance(VppTestCase): # self.vapi.set_ip_flow_hash(0, src=1, dst=1, sport=0, dport=0) - self.send_and_expect_load_balancing(self.pg0, src_pkts, + self.send_and_expect_load_balancing(self.pg0, src_ip_pkts, + [self.pg1, self.pg2]) + self.send_and_expect_load_balancing(self.pg0, src_mpls_pkts, [self.pg1, self.pg2]) - self.pg0.add_stream(port_pkts) - self.pg_enable_capture(self.pg_interfaces) - self.pg_start() - - rx = self.pg2.get_capture(len(port_pkts)) + self.send_and_expect_one_itf(self.pg0, port_ip_pkts, self.pg2) # # change the flow hash config back to defaults @@ -903,5 +1019,540 @@ class TestIPLoadBalance(VppTestCase): [self.pg1, self.pg2, self.pg3, self.pg4]) + # + # Recursive prefixes + # - testing that 2 stages of load-balancing, no choices + # + port_pkts = [] + + for ii in range(257): + port_pkts.append((Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(dst="1.1.1.2", src="20.0.0.2") / + UDP(sport=1234, dport=1234 + ii) / + Raw('\xa5' * 100))) + + route_10_0_0_3 = VppIpRoute(self, "10.0.0.3", 32, + [VppRoutePath(self.pg3.remote_ip4, + self.pg3.sw_if_index)]) + route_10_0_0_3.add_vpp_config() + + route_1_1_1_2 = VppIpRoute(self, "1.1.1.2", 32, + [VppRoutePath("10.0.0.3", 0xffffffff)]) + route_1_1_1_2.add_vpp_config() + + # + # inject the packet on pg0 - expect load-balancing across all 4 paths + # + self.vapi.cli("clear trace") + self.send_and_expect_one_itf(self.pg0, port_pkts, self.pg3) + + +class TestIPVlan0(VppTestCase): + """ IPv4 VLAN-0 """ + + def setUp(self): + super(TestIPVlan0, self).setUp() + + self.create_pg_interfaces(range(2)) + mpls_tbl = VppMplsTable(self, 0) + mpls_tbl.add_vpp_config() + + for i in self.pg_interfaces: + i.admin_up() + i.config_ip4() + i.resolve_arp() + i.enable_mpls() + + def tearDown(self): + for i in self.pg_interfaces: + i.disable_mpls() + i.unconfig_ip4() + i.admin_down() + super(TestIPVlan0, self).tearDown() + + def test_ip_vlan_0(self): + """ IP VLAN-0 """ + + pkts = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + Dot1Q(vlan=0) / + IP(dst=self.pg1.remote_ip4, + src=self.pg0.remote_ip4) / + UDP(sport=1234, dport=1234) / + Raw('\xa5' * 100)) * 65 + + # + # Expect that packets sent on VLAN-0 are forwarded on the + # main interface. + # + self.send_and_expect(self.pg0, pkts, self.pg1) + + +class TestIPPunt(VppTestCase): + """ IPv4 Punt Police/Redirect """ + + def setUp(self): + super(TestIPPunt, self).setUp() + + self.create_pg_interfaces(range(2)) + + for i in self.pg_interfaces: + i.admin_up() + i.config_ip4() + i.resolve_arp() + + def tearDown(self): + super(TestIPPunt, self).tearDown() + for i in self.pg_interfaces: + i.unconfig_ip4() + i.admin_down() + + def test_ip_punt(self): + """ IP punt police and redirect """ + + p = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) / + TCP(sport=1234, dport=1234) / + Raw('\xa5' * 100)) + + pkts = p * 1025 + + # + # Configure a punt redirect via pg1. + # + nh_addr = socket.inet_pton(socket.AF_INET, + self.pg1.remote_ip4) + self.vapi.ip_punt_redirect(self.pg0.sw_if_index, + self.pg1.sw_if_index, + nh_addr) + + self.send_and_expect(self.pg0, pkts, self.pg1) + + # + # add a policer + # + policer = self.vapi.policer_add_del("ip4-punt", 400, 0, 10, 0, + rate_type=1) + self.vapi.ip_punt_police(policer.policer_index) + + self.vapi.cli("clear trace") + self.pg0.add_stream(pkts) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + # + # the number of packet recieved should be greater than 0, + # but not equal to the number sent, since some were policed + # + rx = self.pg1._get_capture(1) + self.assertTrue(len(rx) > 0) + self.assertTrue(len(rx) < len(pkts)) + + # + # remove the poilcer. back to full rx + # + self.vapi.ip_punt_police(policer.policer_index, is_add=0) + self.vapi.policer_add_del("ip4-punt", 400, 0, 10, 0, + rate_type=1, is_add=0) + self.send_and_expect(self.pg0, pkts, self.pg1) + + # + # remove the redirect. expect full drop. + # + self.vapi.ip_punt_redirect(self.pg0.sw_if_index, + self.pg1.sw_if_index, + nh_addr, + is_add=0) + self.send_and_assert_no_replies(self.pg0, pkts, + "IP no punt config") + + # + # Add a redirect that is not input port selective + # + self.vapi.ip_punt_redirect(0xffffffff, + self.pg1.sw_if_index, + nh_addr) + self.send_and_expect(self.pg0, pkts, self.pg1) + + self.vapi.ip_punt_redirect(0xffffffff, + self.pg1.sw_if_index, + nh_addr, + is_add=0) + + +class TestIPDeag(VppTestCase): + """ IPv4 Deaggregate Routes """ + + def setUp(self): + super(TestIPDeag, self).setUp() + + self.create_pg_interfaces(range(3)) + + for i in self.pg_interfaces: + i.admin_up() + i.config_ip4() + i.resolve_arp() + + def tearDown(self): + super(TestIPDeag, self).tearDown() + for i in self.pg_interfaces: + i.unconfig_ip4() + i.admin_down() + + def test_ip_deag(self): + """ IP Deag Routes """ + + # + # Create a table to be used for: + # 1 - another destination address lookup + # 2 - a source address lookup + # + table_dst = VppIpTable(self, 1) + table_src = VppIpTable(self, 2) + table_dst.add_vpp_config() + table_src.add_vpp_config() + + # + # Add a route in the default table to point to a deag/ + # second lookup in each of these tables + # + route_to_dst = VppIpRoute(self, "1.1.1.1", 32, + [VppRoutePath("0.0.0.0", + 0xffffffff, + nh_table_id=1)]) + route_to_src = VppIpRoute(self, "1.1.1.2", 32, + [VppRoutePath("0.0.0.0", + 0xffffffff, + nh_table_id=2, + is_source_lookup=1)]) + route_to_dst.add_vpp_config() + route_to_src.add_vpp_config() + + # + # packets to these destination are dropped, since they'll + # hit the respective default routes in the second table + # + p_dst = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(src="5.5.5.5", dst="1.1.1.1") / + TCP(sport=1234, dport=1234) / + Raw('\xa5' * 100)) + p_src = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(src="2.2.2.2", dst="1.1.1.2") / + TCP(sport=1234, dport=1234) / + Raw('\xa5' * 100)) + pkts_dst = p_dst * 257 + pkts_src = p_src * 257 + + self.send_and_assert_no_replies(self.pg0, pkts_dst, + "IP in dst table") + self.send_and_assert_no_replies(self.pg0, pkts_src, + "IP in src table") + + # + # add a route in the dst table to forward via pg1 + # + route_in_dst = VppIpRoute(self, "1.1.1.1", 32, + [VppRoutePath(self.pg1.remote_ip4, + self.pg1.sw_if_index)], + table_id=1) + route_in_dst.add_vpp_config() + self.send_and_expect(self.pg0, pkts_dst, self.pg1) + + # + # add a route in the src table to forward via pg2 + # + route_in_src = VppIpRoute(self, "2.2.2.2", 32, + [VppRoutePath(self.pg2.remote_ip4, + self.pg2.sw_if_index)], + table_id=2) + route_in_src.add_vpp_config() + self.send_and_expect(self.pg0, pkts_src, self.pg2) + + # + # loop in the lookup DP + # + route_loop = VppIpRoute(self, "2.2.2.3", 32, + [VppRoutePath("0.0.0.0", + 0xffffffff, + nh_table_id=0)]) + route_loop.add_vpp_config() + + p_l = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(src="2.2.2.4", dst="2.2.2.3") / + TCP(sport=1234, dport=1234) / + Raw('\xa5' * 100)) + + self.send_and_assert_no_replies(self.pg0, p_l * 257, + "IP lookup loop") + + +class TestIPInput(VppTestCase): + """ IPv4 Input Exceptions """ + + def setUp(self): + super(TestIPInput, self).setUp() + + self.create_pg_interfaces(range(2)) + + for i in self.pg_interfaces: + i.admin_up() + i.config_ip4() + i.resolve_arp() + + def tearDown(self): + super(TestIPInput, self).tearDown() + for i in self.pg_interfaces: + i.unconfig_ip4() + i.admin_down() + + def test_ip_input(self): + """ IP Input Exceptions """ + + # i can't find a way in scapy to construct an IP packet + # with a length less than the IP header length + + # + # Packet too short - this is forwarded + # + p_short = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(src=self.pg0.remote_ip4, + dst=self.pg1.remote_ip4, + len=40) / + UDP(sport=1234, dport=1234) / + Raw('\xa5' * 100)) + + rx = self.send_and_expect(self.pg0, p_short * 65, self.pg1) + + # + # Packet too long - this is dropped + # + p_long = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(src=self.pg0.remote_ip4, + dst=self.pg1.remote_ip4, + len=400) / + UDP(sport=1234, dport=1234) / + Raw('\xa5' * 100)) + + rx = self.send_and_assert_no_replies(self.pg0, p_long * 65, + "too long") + + # + # bad chksum - this is dropped + # + p_chksum = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(src=self.pg0.remote_ip4, + dst=self.pg1.remote_ip4, + chksum=400) / + UDP(sport=1234, dport=1234) / + Raw('\xa5' * 100)) + + rx = self.send_and_assert_no_replies(self.pg0, p_chksum * 65, + "bad checksum") + + # + # bad version - this is dropped + # + p_ver = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(src=self.pg0.remote_ip4, + dst=self.pg1.remote_ip4, + version=3) / + UDP(sport=1234, dport=1234) / + Raw('\xa5' * 100)) + + rx = self.send_and_assert_no_replies(self.pg0, p_ver * 65, + "funky version") + + # + # fragment offset 1 - this is dropped + # + p_frag = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(src=self.pg0.remote_ip4, + dst=self.pg1.remote_ip4, + frag=1) / + UDP(sport=1234, dport=1234) / + Raw('\xa5' * 100)) + + rx = self.send_and_assert_no_replies(self.pg0, p_frag * 65, + "frag offset") + + # + # TTL expired packet + # + p_ttl = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(src=self.pg0.remote_ip4, + dst=self.pg1.remote_ip4, + ttl=1) / + UDP(sport=1234, dport=1234) / + Raw('\xa5' * 100)) + + rx = self.send_and_expect(self.pg0, p_ttl * 65, self.pg0) + + rx = rx[0] + icmp = rx[ICMP] + + self.assertEqual(icmptypes[icmp.type], "time-exceeded") + self.assertEqual(icmpcodes[icmp.type][icmp.code], + "ttl-zero-during-transit") + self.assertEqual(icmp.src, self.pg0.remote_ip4) + self.assertEqual(icmp.dst, self.pg1.remote_ip4) + + # + # MTU exceeded + # + p_mtu = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(src=self.pg0.remote_ip4, + dst=self.pg1.remote_ip4, + ttl=10, flags='DF') / + UDP(sport=1234, dport=1234) / + Raw('\xa5' * 2000)) + + self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [1500, 0, 0, 0]) + + rx = self.send_and_expect(self.pg0, p_mtu * 65, self.pg0) + rx = rx[0] + icmp = rx[ICMP] + + self.assertEqual(icmptypes[icmp.type], "dest-unreach") + self.assertEqual(icmpcodes[icmp.type][icmp.code], + "fragmentation-needed") + self.assertEqual(icmp.src, self.pg0.remote_ip4) + self.assertEqual(icmp.dst, self.pg1.remote_ip4) + + self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [2500, 0, 0, 0]) + rx = self.send_and_expect(self.pg0, p_mtu * 65, self.pg1) + + # Reset MTU for subsequent tests + self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [9000, 0, 0, 0]) + + +class TestIPDirectedBroadcast(VppTestCase): + """ IPv4 Directed Broadcast """ + + def setUp(self): + super(TestIPDirectedBroadcast, self).setUp() + + self.create_pg_interfaces(range(2)) + + for i in self.pg_interfaces: + i.admin_up() + + def tearDown(self): + super(TestIPDirectedBroadcast, self).tearDown() + for i in self.pg_interfaces: + i.admin_down() + + def test_ip_input(self): + """ IP Directed Broadcast """ + + # + # set the directed broadcast on pg0 first, then config IP4 addresses + # for pg1 directed broadcast is always disabled + self.vapi.sw_interface_set_ip_directed_broadcast( + self.pg0.sw_if_index, 1) + + p0 = (Ether(src=self.pg1.remote_mac, + dst=self.pg1.local_mac) / + IP(src="1.1.1.1", + dst=self.pg0._local_ip4_bcast) / + UDP(sport=1234, dport=1234) / + Raw('\xa5' * 2000)) + p1 = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(src="1.1.1.1", + dst=self.pg1._local_ip4_bcast) / + UDP(sport=1234, dport=1234) / + Raw('\xa5' * 2000)) + + self.pg0.config_ip4() + self.pg0.resolve_arp() + self.pg1.config_ip4() + self.pg1.resolve_arp() + + # + # test packet is L2 broadcast + # + rx = self.send_and_expect(self.pg1, p0 * 65, self.pg0) + self.assertTrue(rx[0][Ether].dst, "ff:ff:ff:ff:ff:ff") + + self.send_and_assert_no_replies(self.pg0, p1 * 65, + "directed broadcast disabled") + + # + # toggle directed broadcast on pg0 + # + self.vapi.sw_interface_set_ip_directed_broadcast( + self.pg0.sw_if_index, 0) + self.send_and_assert_no_replies(self.pg1, p0 * 65, + "directed broadcast disabled") + + self.vapi.sw_interface_set_ip_directed_broadcast( + self.pg0.sw_if_index, 1) + rx = self.send_and_expect(self.pg1, p0 * 65, self.pg0) + + self.pg0.unconfig_ip4() + self.pg1.unconfig_ip4() + + +class TestIPLPM(VppTestCase): + """ IPv4 longest Prefix Match """ + + def setUp(self): + super(TestIPLPM, self).setUp() + + self.create_pg_interfaces(range(4)) + + for i in self.pg_interfaces: + i.admin_up() + i.config_ip4() + i.resolve_arp() + + def tearDown(self): + super(TestIPLPM, self).tearDown() + for i in self.pg_interfaces: + i.admin_down() + i.unconfig_ip4() + + def test_ip_lpm(self): + """ IP longest Prefix Match """ + + s_24 = VppIpRoute(self, "10.1.2.0", 24, + [VppRoutePath(self.pg1.remote_ip4, + self.pg1.sw_if_index)]) + s_24.add_vpp_config() + s_8 = VppIpRoute(self, "10.0.0.0", 8, + [VppRoutePath(self.pg2.remote_ip4, + self.pg2.sw_if_index)]) + s_8.add_vpp_config() + + p_8 = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(src="1.1.1.1", + dst="10.1.1.1") / + UDP(sport=1234, dport=1234) / + Raw('\xa5' * 2000)) + p_24 = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(src="1.1.1.1", + dst="10.1.2.1") / + UDP(sport=1234, dport=1234) / + Raw('\xa5' * 2000)) + + self.logger.info(self.vapi.cli("sh ip fib mtrie")) + rx = self.send_and_expect(self.pg0, p_8 * 65, self.pg2) + rx = self.send_and_expect(self.pg0, p_24 * 65, self.pg1) + + if __name__ == '__main__': unittest.main(testRunner=VppTestRunner)