X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=test%2Ftest_ip4.py;h=7f6e92fa37fc7619bc4b31ad6f13b58f89dec616;hb=37be73693a46b05360483778efee3313a71654f5;hp=48155a5a02523d3f5ca1190c83897db5b6f34168;hpb=d72fdf5712200d615d7137911f9177d691ab28f0;p=vpp.git diff --git a/test/test_ip4.py b/test/test_ip4.py index 48155a5a025..7f6e92fa37f 100644 --- a/test/test_ip4.py +++ b/test/test_ip4.py @@ -1,25 +1,40 @@ #!/usr/bin/env python - -import unittest +import random import socket -from logging import * +import unittest from framework import VppTestCase, VppTestRunner from vpp_sub_interface import VppSubInterface, VppDot1QSubint, VppDot1ADSubint +from vpp_ip_route import VppIpRoute, VppRoutePath from scapy.packet import Raw -from scapy.layers.l2 import Ether, Dot1Q, ARP -from scapy.layers.inet import IP, UDP +from scapy.layers.l2 import Ether, Dot1Q +from scapy.layers.inet import IP, UDP, ICMP, icmptypes, icmpcodes +from util import ppp class TestIPv4(VppTestCase): """ IPv4 Test Case """ - @classmethod - def setUpClass(cls): - super(TestIPv4, cls).setUpClass() - def setUp(self): + """ + Perform test setup before test case. + + **Config:** + - create 3 pg interfaces + - untagged pg0 interface + - Dot1Q subinterface on pg1 + - Dot1AD subinterface on pg2 + - setup interfaces: + - put it into UP state + - set IPv4 addresses + - resolve neighbor address using ARP + - configure 200 fib entries + + :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() # create 3 pg interfaces @@ -49,16 +64,26 @@ class TestIPv4(VppTestCase): i.config_ip4() i.resolve_arp() - # config 2M FIB enries + # config 2M FIB entries self.config_fib_entries(200) def tearDown(self): + """Run standard test teardown and log ``show ip arp``.""" super(TestIPv4, self).tearDown() if not self.vpp_dead: - info(self.vapi.cli("show ip arp")) + self.logger.info(self.vapi.cli("show ip arp")) # info(self.vapi.cli("show ip fib")) # many entries def config_fib_entries(self, count): + """For each interface add to the FIB table *count* routes to + "10.0.0.1/32" destination with interface's local address as next-hop + address. + + :param int count: Number of FIB entries. + + - *TODO:* check if the next-hop address shouldn't be remote address + instead of local address. + """ n_int = len(self.interfaces) percent = 0 counter = 0.0 @@ -69,18 +94,22 @@ class TestIPv4(VppTestCase): for j in range(count / n_int): self.vapi.ip_add_del_route( dest_addr, dest_addr_len, next_hop_address) - counter = counter + 1 + counter += 1 if counter / count * 100 > percent: - info("Configure %d FIB entries .. %d%% done" % - (count, percent)) - percent = percent + 1 + self.logger.info("Configure %d FIB entries .. %d%% done" % + (count, percent)) + percent += 1 def create_stream(self, src_if, packet_sizes): + """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.sw_if_index, dst_if.sw_if_index) + 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) / @@ -95,7 +124,13 @@ class TestIPv4(VppTestCase): return pkts def verify_capture(self, dst_if, capture): - info("Verifying capture on interface %s" % dst_if.name) + """Verify captured input packet stream for defined interface. + + :param VppInterface dst_if: Interface to verify captured packet stream + for. + :param list capture: Captured packet stream. + """ + self.logger.info("Verifying capture on interface %s" % dst_if.name) last_info = dict() for i in self.interfaces: last_info[i.sw_if_index] = None @@ -114,8 +149,9 @@ class TestIPv4(VppTestCase): payload_info = self.payload_to_info(str(packet[Raw])) packet_index = payload_info.index self.assertEqual(payload_info.dst, dst_sw_if_index) - debug("Got packet on port %s: src=%u (id=%u)" % - (dst_if.name, payload_info.src, packet_index)) + self.logger.debug( + "Got packet on port %s: src=%u (id=%u)" % + (dst_if.name, payload_info.src, packet_index)) next_info = self.get_next_packet_info_for_interface2( payload_info.src, dst_sw_if_index, last_info[payload_info.src]) @@ -129,19 +165,24 @@ class TestIPv4(VppTestCase): self.assertEqual(udp.sport, saved_packet[UDP].sport) self.assertEqual(udp.dport, saved_packet[UDP].dport) except: - error("Unexpected or invalid packet:") - error(packet.show()) + self.logger.error(ppp("Unexpected or invalid packet:", packet)) raise for i in self.interfaces: remaining_packet = self.get_next_packet_info_for_interface2( i.sw_if_index, dst_sw_if_index, last_info[i.sw_if_index]) - self.assertTrue( - remaining_packet is None, - "Interface %s: Packet expected from interface %s didn't arrive" % - (dst_if.name, i.name)) + self.assertTrue(remaining_packet is None, + "Interface %s: Packet expected from interface %s " + "didn't arrive" % (dst_if.name, i.name)) def test_fib(self): - """ IPv4 FIB test """ + """ IPv4 FIB test + + Test scenario: + + - Create IPv4 stream for pg0 interface + - Create IPv4 tagged streams for pg1's and pg2's subinterface. + - Send and verify received packets on each interface. + """ pkts = self.create_stream(self.pg0, self.pg_if_packet_sizes) self.pg0.add_stream(pkts) @@ -161,5 +202,349 @@ class TestIPv4(VppTestCase): self.verify_capture(i, pkts) +class TestIPv4FibCrud(VppTestCase): + """ FIB - add/update/delete - ip4 routes + + Test scenario: + - add 1k, + - del 100, + - add new 1k, + - del 1.5k + + ..note:: Python API is too slow to add many routes, needs replacement. + """ + + def config_fib_many_to_one(self, start_dest_addr, next_hop_addr, count): + """ + + :param start_dest_addr: + :param next_hop_addr: + :param count: + :return list: added ips with 32 prefix + """ + added_ips = [] + dest_addr = int(socket.inet_pton(socket.AF_INET, + start_dest_addr).encode('hex'), + 16) + dest_addr_len = 32 + n_next_hop_addr = socket.inet_pton(socket.AF_INET, next_hop_addr) + for _ in range(count): + n_dest_addr = '{:08x}'.format(dest_addr).decode('hex') + self.vapi.ip_add_del_route(n_dest_addr, dest_addr_len, + n_next_hop_addr) + added_ips.append(socket.inet_ntoa(n_dest_addr)) + dest_addr += 1 + return added_ips + + def unconfig_fib_many_to_one(self, start_dest_addr, next_hop_addr, count): + + removed_ips = [] + dest_addr = int(socket.inet_pton(socket.AF_INET, + start_dest_addr).encode('hex'), + 16) + dest_addr_len = 32 + n_next_hop_addr = socket.inet_pton(socket.AF_INET, next_hop_addr) + for _ in range(count): + n_dest_addr = '{:08x}'.format(dest_addr).decode('hex') + self.vapi.ip_add_del_route(n_dest_addr, dest_addr_len, + n_next_hop_addr, is_add=0) + removed_ips.append(socket.inet_ntoa(n_dest_addr)) + dest_addr += 1 + return removed_ips + + def create_stream(self, src_if, dst_if, dst_ips, count): + pkts = [] + + for _ in range(count): + dst_addr = random.choice(dst_ips) + 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_addr) / + UDP(sport=1234, dport=1234) / + Raw(payload)) + info.data = p.copy() + self.extend_packet(p, random.choice(self.pg_if_packet_sizes)) + pkts.append(p) + + return pkts + + def _find_ip_match(self, find_in, pkt): + for p in find_in: + if self.payload_to_info(str(p[Raw])) == \ + self.payload_to_info(str(pkt[Raw])): + if p[IP].src != pkt[IP].src: + break + if p[IP].dst != pkt[IP].dst: + break + if p[UDP].sport != pkt[UDP].sport: + break + if p[UDP].dport != pkt[UDP].dport: + break + return p + return None + + @staticmethod + def _match_route_detail(route_detail, ip, address_length=32, table_id=0): + if route_detail.address == socket.inet_pton(socket.AF_INET, ip): + if route_detail.table_id != table_id: + return False + elif route_detail.address_length != address_length: + return False + else: + return True + else: + return False + + def verify_capture(self, dst_interface, received_pkts, expected_pkts): + self.assertEqual(len(received_pkts), len(expected_pkts)) + to_verify = list(expected_pkts) + for p in received_pkts: + self.assertEqual(p.src, dst_interface.local_mac) + self.assertEqual(p.dst, dst_interface.remote_mac) + x = self._find_ip_match(to_verify, p) + to_verify.remove(x) + self.assertListEqual(to_verify, []) + + def verify_route_dump(self, fib_dump, ips): + + def _ip_in_route_dump(ip, fib_dump): + return next((route for route in fib_dump + if self._match_route_detail(route, ip)), + False) + + for ip in ips: + self.assertTrue(_ip_in_route_dump(ip, fib_dump), + 'IP {} is not in fib dump.'.format(ip)) + + def verify_not_in_route_dump(self, fib_dump, ips): + + def _ip_in_route_dump(ip, fib_dump): + return next((route for route in fib_dump + if self._match_route_detail(route, ip)), + False) + + for ip in ips: + self.assertFalse(_ip_in_route_dump(ip, fib_dump), + 'IP {} is in fib dump.'.format(ip)) + + @classmethod + def setUpClass(cls): + """ + #. Create and initialize 3 pg interfaces. + #. initialize class attributes configured_routes and deleted_routes + to store information between tests. + """ + super(TestIPv4FibCrud, cls).setUpClass() + + try: + # create 3 pg interfaces + cls.create_pg_interfaces(range(3)) + + cls.interfaces = list(cls.pg_interfaces) + + # setup all interfaces + for i in cls.interfaces: + i.admin_up() + i.config_ip4() + i.resolve_arp() + + cls.configured_routes = [] + cls.deleted_routes = [] + cls.pg_if_packet_sizes = [64, 512, 1518, 9018] + + except Exception: + super(TestIPv4FibCrud, cls).tearDownClass() + raise + + def setUp(self): + super(TestIPv4FibCrud, self).setUp() + self.reset_packet_infos() + + def test_1_add_routes(self): + """ Add 1k routes + + - add 100 routes check with traffic script. + """ + # config 1M FIB entries + self.configured_routes.extend(self.config_fib_many_to_one( + "10.0.0.0", self.pg0.remote_ip4, 100)) + + fib_dump = self.vapi.ip_fib_dump() + self.verify_route_dump(fib_dump, self.configured_routes) + + self.stream_1 = self.create_stream( + self.pg1, self.pg0, self.configured_routes, 100) + self.stream_2 = self.create_stream( + self.pg2, self.pg0, self.configured_routes, 100) + self.pg1.add_stream(self.stream_1) + self.pg2.add_stream(self.stream_2) + + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + pkts = self.pg0.get_capture(len(self.stream_1) + len(self.stream_2)) + self.verify_capture(self.pg0, pkts, self.stream_1 + self.stream_2) + + def test_2_del_routes(self): + """ Delete 100 routes + + - delete 10 routes check with traffic script. + """ + self.deleted_routes.extend(self.unconfig_fib_many_to_one( + "10.0.0.10", self.pg0.remote_ip4, 10)) + for x in self.deleted_routes: + self.configured_routes.remove(x) + + fib_dump = self.vapi.ip_fib_dump() + self.verify_route_dump(fib_dump, self.configured_routes) + + self.stream_1 = self.create_stream( + self.pg1, self.pg0, self.configured_routes, 100) + self.stream_2 = self.create_stream( + self.pg2, self.pg0, self.configured_routes, 100) + self.stream_3 = self.create_stream( + self.pg1, self.pg0, self.deleted_routes, 100) + self.stream_4 = self.create_stream( + self.pg2, self.pg0, self.deleted_routes, 100) + self.pg1.add_stream(self.stream_1 + self.stream_3) + self.pg2.add_stream(self.stream_2 + self.stream_4) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + pkts = self.pg0.get_capture(len(self.stream_1) + len(self.stream_2)) + self.verify_capture(self.pg0, pkts, self.stream_1 + self.stream_2) + + def test_3_add_new_routes(self): + """ Add 1k routes + + - re-add 5 routes check with traffic script. + - add 100 routes check with traffic script. + """ + tmp = self.config_fib_many_to_one( + "10.0.0.10", self.pg0.remote_ip4, 5) + self.configured_routes.extend(tmp) + for x in tmp: + self.deleted_routes.remove(x) + + self.configured_routes.extend(self.config_fib_many_to_one( + "10.0.1.0", self.pg0.remote_ip4, 100)) + + fib_dump = self.vapi.ip_fib_dump() + self.verify_route_dump(fib_dump, self.configured_routes) + + self.stream_1 = self.create_stream( + self.pg1, self.pg0, self.configured_routes, 300) + self.stream_2 = self.create_stream( + self.pg2, self.pg0, self.configured_routes, 300) + self.stream_3 = self.create_stream( + self.pg1, self.pg0, self.deleted_routes, 100) + self.stream_4 = self.create_stream( + self.pg2, self.pg0, self.deleted_routes, 100) + + self.pg1.add_stream(self.stream_1 + self.stream_3) + self.pg2.add_stream(self.stream_2 + self.stream_4) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + pkts = self.pg0.get_capture(len(self.stream_1) + len(self.stream_2)) + self.verify_capture(self.pg0, pkts, self.stream_1 + self.stream_2) + + def test_4_del_routes(self): + """ Delete 1.5k routes + + - delete 5 routes check with traffic script. + - add 100 routes check with traffic script. + """ + self.deleted_routes.extend(self.unconfig_fib_many_to_one( + "10.0.0.0", self.pg0.remote_ip4, 15)) + self.deleted_routes.extend(self.unconfig_fib_many_to_one( + "10.0.0.20", self.pg0.remote_ip4, 85)) + self.deleted_routes.extend(self.unconfig_fib_many_to_one( + "10.0.1.0", self.pg0.remote_ip4, 100)) + fib_dump = self.vapi.ip_fib_dump() + self.verify_not_in_route_dump(fib_dump, self.deleted_routes) + + +class TestIPNull(VppTestCase): + """ IPv4 routes via NULL """ + + def setUp(self): + super(TestIPNull, self).setUp() + + # create 2 pg interfaces + 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(TestIPNull, self).tearDown() + for i in self.pg_interfaces: + i.unconfig_ip4() + i.admin_down() + + def test_ip_null(self): + """ IP NULL route """ + + # + # A route via IP NULL that will reply with ICMP unreachables + # + ip_unreach = VppIpRoute(self, "10.0.0.1", 32, [], is_unreach=1) + ip_unreach.add_vpp_config() + + p_unreach = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(src=self.pg0.remote_ip4, dst="10.0.0.1") / + UDP(sport=1234, dport=1234) / + Raw('\xa5' * 100)) + + self.pg0.add_stream(p_unreach) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + rx = self.pg0.get_capture(1) + rx = rx[0] + icmp = rx[ICMP] + + self.assertEqual(icmptypes[icmp.type], "dest-unreach") + self.assertEqual(icmpcodes[icmp.type][icmp.code], "host-unreachable") + self.assertEqual(icmp.src, self.pg0.remote_ip4) + self.assertEqual(icmp.dst, "10.0.0.1") + + # + # ICMP replies are rate limited. so sit and spin. + # + self.sleep(1) + + # + # A route via IP NULL that will reply with ICMP prohibited + # + ip_prohibit = VppIpRoute(self, "10.0.0.2", 32, [], is_prohibit=1) + ip_prohibit.add_vpp_config() + + p_prohibit = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(src=self.pg0.remote_ip4, dst="10.0.0.2") / + UDP(sport=1234, dport=1234) / + Raw('\xa5' * 100)) + + self.pg0.add_stream(p_prohibit) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + rx = self.pg0.get_capture(1) + + rx = rx[0] + icmp = rx[ICMP] + + self.assertEqual(icmptypes[icmp.type], "dest-unreach") + self.assertEqual(icmpcodes[icmp.type][icmp.code], "host-prohibited") + self.assertEqual(icmp.src, self.pg0.remote_ip4) + self.assertEqual(icmp.dst, "10.0.0.2") + + if __name__ == '__main__': unittest.main(testRunner=VppTestRunner)