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Diffstat (limited to 'test/test_span.py')
| -rw-r--r-- | test/test_span.py | 481 |
1 files changed, 481 insertions, 0 deletions
diff --git a/test/test_span.py b/test/test_span.py new file mode 100644 index 00000000..f2529e8f --- /dev/null +++ b/test/test_span.py @@ -0,0 +1,481 @@ +#!/usr/bin/env python + +import unittest + +from scapy.packet import Raw +from scapy.layers.l2 import Ether, Dot1Q, GRE +from scapy.layers.inet import IP, UDP +from scapy.layers.vxlan import VXLAN + +from framework import VppTestCase, VppTestRunner +from util import Host, ppp +from vpp_sub_interface import VppDot1QSubint, VppDot1ADSubint +from vpp_gre_interface import VppGreInterface, VppGre6Interface +from vpp_papi_provider import L2_VTR_OP +from collections import namedtuple + +Tag = namedtuple('Tag', ['dot1', 'vlan']) +DOT1AD = 0x88A8 +DOT1Q = 0x8100 + + +class TestSpan(VppTestCase): + """ SPAN Test Case """ + + @classmethod + def setUpClass(cls): + super(TestSpan, cls).setUpClass() + # Test variables + cls.hosts_nr = 10 # Number of hosts + cls.pkts_per_burst = 257 # Number of packets per burst + # create 3 pg interfaces + cls.create_pg_interfaces(range(3)) + + cls.bd_id = 55 + cls.sub_if = VppDot1QSubint(cls, cls.pg0, 100) + cls.dst_sub_if = VppDot1QSubint(cls, cls.pg2, 300) + cls.dst_sub_if.set_vtr(L2_VTR_OP.L2_POP_1, tag=300) + # packet flows mapping pg0 -> pg1, pg2 -> pg3, etc. + cls.flows = dict() + cls.flows[cls.pg0] = [cls.pg1] + + # packet sizes + cls.pg_if_packet_sizes = [64, 512] # , 1518, 9018] + + cls.interfaces = list(cls.pg_interfaces) + + # Create host MAC and IPv4 lists + # cls.MY_MACS = dict() + # cls.MY_IP4S = dict() + cls.create_host_lists(cls.hosts_nr) + + # setup all interfaces + for i in cls.interfaces: + i.admin_up() + i.config_ip4() + i.resolve_arp() + + cls.vxlan = cls.vapi.vxlan_add_del_tunnel( + src_addr=cls.pg2.local_ip4n, + dst_addr=cls.pg2.remote_ip4n, + vni=1111, + is_add=1) + + def setUp(self): + super(TestSpan, self).setUp() + self.reset_packet_infos() + + def tearDown(self): + super(TestSpan, self).tearDown() + if not self.vpp_dead: + self.logger.info(self.vapi.ppcli("show interface span")) + + def xconnect(self, a, b, is_add=1): + self.vapi.sw_interface_set_l2_xconnect(a, b, enable=is_add) + self.vapi.sw_interface_set_l2_xconnect(b, a, enable=is_add) + + def bridge(self, sw_if_index, is_add=1): + self.vapi.sw_interface_set_l2_bridge( + sw_if_index, bd_id=self.bd_id, enable=is_add) + + def _remove_tag(self, packet, vlan, tag_type): + self.assertEqual(packet.type, tag_type) + payload = packet.payload + self.assertEqual(payload.vlan, vlan) + inner_type = payload.type + payload = payload.payload + packet.remove_payload() + packet.add_payload(payload) + packet.type = inner_type + + def remove_tags(self, packet, tags): + for t in tags: + self._remove_tag(packet, t.vlan, t.dot1) + return packet + + def decap_gre(self, pkt): + """ + Decapsulate the original payload frame by removing GRE header + """ + self.assertEqual(pkt[Ether].src, self.pg2.local_mac) + self.assertEqual(pkt[Ether].dst, self.pg2.remote_mac) + + self.assertEqual(pkt[IP].src, self.pg2.local_ip4) + self.assertEqual(pkt[IP].dst, self.pg2.remote_ip4) + + return pkt[GRE].payload + + def decap_vxlan(self, pkt): + """ + Decapsulate the original payload frame by removing VXLAN header + """ + self.assertEqual(pkt[Ether].src, self.pg2.local_mac) + self.assertEqual(pkt[Ether].dst, self.pg2.remote_mac) + + self.assertEqual(pkt[IP].src, self.pg2.local_ip4) + self.assertEqual(pkt[IP].dst, self.pg2.remote_ip4) + + return pkt[VXLAN].payload + + @classmethod + def create_host_lists(self, count): + """ Method to create required number of MAC and IPv4 addresses. + Create required number of host MAC addresses and distribute them among + interfaces. Create host IPv4 address for every host MAC address too. + + :param count: Number of hosts to create MAC and IPv4 addresses for. + """ + # mapping between packet-generator index and lists of test hosts + self.hosts_by_pg_idx = dict() + + for pg_if in self.pg_interfaces: + # self.MY_MACS[i.sw_if_index] = [] + # self.MY_IP4S[i.sw_if_index] = [] + self.hosts_by_pg_idx[pg_if.sw_if_index] = [] + hosts = self.hosts_by_pg_idx[pg_if.sw_if_index] + for j in range(0, count): + host = Host( + "00:00:00:ff:%02x:%02x" % (pg_if.sw_if_index, j), + "172.17.1%02x.%u" % (pg_if.sw_if_index, j)) + hosts.append(host) + + def create_stream(self, src_if, packet_sizes, do_dot1=False): + pkts = [] + for i in range(0, self.pkts_per_burst): + dst_if = self.flows[src_if][0] + pkt_info = self.create_packet_info(src_if, dst_if) + payload = self.info_to_payload(pkt_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)) + if do_dot1: + p = self.sub_if.add_dot1_layer(p) + pkt_info.data = p.copy() + size = packet_sizes[(i / 2) % len(packet_sizes)] + self.extend_packet(p, size) + pkts.append(p) + return pkts + + def verify_capture(self, dst_if, capture_pg1, capture_pg2): + last_info = dict() + for i in self.interfaces: + last_info[i.sw_if_index] = None + dst_sw_if_index = dst_if.sw_if_index + self.assertEqual( + len(capture_pg1), + len(capture_pg2), + "Different number of outgoing and mirrored packets : %u != %u" % + (len(capture_pg1), + len(capture_pg2))) + for pkt_pg1, pkt_pg2 in zip(capture_pg1, capture_pg2): + try: + ip1 = pkt_pg1[IP] + udp1 = pkt_pg1[UDP] + raw1 = pkt_pg1[Raw] + + if pkt_pg1[Ether] != pkt_pg2[Ether]: + self.logger.error("Different ethernet header of " + "outgoing and mirrored packet") + raise + if ip1 != pkt_pg2[IP]: + self.logger.error( + "Different ip header of outgoing and mirrored packet") + raise + if udp1 != pkt_pg2[UDP]: + self.logger.error( + "Different udp header of outgoing and mirrored packet") + raise + if raw1 != pkt_pg2[Raw]: + self.logger.error( + "Different raw data of outgoing and mirrored packet") + raise + + payload_info = self.payload_to_info(str(raw1)) + packet_index = payload_info.index + self.assertEqual(payload_info.dst, dst_sw_if_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]) + last_info[payload_info.src] = next_info + self.assertTrue(next_info is not None) + self.assertEqual(packet_index, next_info.index) + saved_packet = next_info.data + # Check standard fields + self.assertEqual(ip1.src, saved_packet[IP].src) + self.assertEqual(ip1.dst, saved_packet[IP].dst) + self.assertEqual(udp1.sport, saved_packet[UDP].sport) + self.assertEqual(udp1.dport, saved_packet[UDP].dport) + except: + self.logger.error("Unexpected or invalid packets:") + self.logger.error(ppp("pg1 packet:", pkt_pg1)) + self.logger.error(ppp("pg2 packet:", pkt_pg2)) + raise + for i in self.interfaces: + remaining_packet = self.get_next_packet_info_for_interface2( + i, dst_sw_if_index, last_info[i.sw_if_index]) + self.assertTrue(remaining_packet is None, + "Port %u: Packet expected from source %u didn't" + " arrive" % (dst_sw_if_index, i.sw_if_index)) + + def test_device_span(self): + """ SPAN device rx mirror test + + Test scenario: + 1. config + 3 interfaces, pg0 l2xconnected with pg1 + 2. sending l2 eth packets between 2 interfaces (pg0, pg1) and + mirrored to pg2 + 64B, 512B, 1518B, 9018B (ether_size) + burst of packets per interface + """ + + # Create bi-directional cross-connects between pg0 and pg1 + self.xconnect(self.pg0.sw_if_index, self.pg1.sw_if_index) + # Create incoming packet streams for packet-generator interfaces + pkts = self.create_stream(self.pg0, self.pg_if_packet_sizes) + self.pg0.add_stream(pkts) + + # Enable SPAN on pg0 (mirrored to pg2) + self.vapi.sw_interface_span_enable_disable( + self.pg0.sw_if_index, self.pg2.sw_if_index) + + self.logger.info(self.vapi.ppcli("show interface span")) + # Enable packet capturing and start packet sending + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + # Verify packets outgoing packet streams on mirrored interface (pg2) + self.logger.info("Verifying capture on interfaces %s and %s" % + (self.pg1.name, self.pg2.name)) + pg2_expected = self.get_packet_count_for_if_idx(self.pg1.sw_if_index) + self.verify_capture( + self.pg1, + self.pg1.get_capture(), + self.pg2.get_capture(pg2_expected)) + + # Disable SPAN on pg0 (mirrored to pg2) + self.vapi.sw_interface_span_enable_disable( + self.pg0.sw_if_index, self.pg2.sw_if_index, state=0) + self.xconnect(self.pg0.sw_if_index, self.pg1.sw_if_index, is_add=0) + + def test_span_l2_rx(self): + """ SPAN l2 rx mirror test """ + + self.sub_if.admin_up() + + self.bridge(self.pg2.sw_if_index) + # Create bi-directional cross-connects between pg0 and pg1 + self.xconnect(self.sub_if.sw_if_index, self.pg1.sw_if_index) + # Create incoming packet streams for packet-generator interfaces + pkts = self.create_stream( + self.pg0, self.pg_if_packet_sizes, do_dot1=True) + self.pg0.add_stream(pkts) + + # Enable SPAN on pg0 (mirrored to pg2) + self.vapi.sw_interface_span_enable_disable( + self.sub_if.sw_if_index, self.pg2.sw_if_index, is_l2=1) + + self.logger.info(self.vapi.ppcli("show interface span")) + # Enable packet capturing and start packet sending + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + # Verify packets outgoing packet streams on mirrored interface (pg2) + self.logger.info("Verifying capture on interfaces %s and %s" % + (self.pg1.name, self.pg2.name)) + pg2_expected = self.get_packet_count_for_if_idx(self.pg1.sw_if_index) + pg1_pkts = self.pg1.get_capture() + pg2_pkts = self.pg2.get_capture(pg2_expected) + self.verify_capture( + self.pg1, + pg1_pkts, + pg2_pkts) + + self.bridge(self.pg2.sw_if_index, is_add=0) + # Disable SPAN on pg0 (mirrored to pg2) + self.vapi.sw_interface_span_enable_disable( + self.sub_if.sw_if_index, self.pg2.sw_if_index, state=0, is_l2=1) + self.xconnect(self.sub_if.sw_if_index, self.pg1.sw_if_index, is_add=0) + + def test_span_l2_rx_dst_vxlan(self): + """ SPAN l2 rx mirror into vxlan test """ + + self.sub_if.admin_up() + self.vapi.sw_interface_set_flags(self.vxlan.sw_if_index, + admin_up_down=1) + + self.bridge(self.vxlan.sw_if_index, is_add=1) + # Create bi-directional cross-connects between pg0 and pg1 + self.xconnect(self.sub_if.sw_if_index, self.pg1.sw_if_index) + # Create incoming packet streams for packet-generator interfaces + pkts = self.create_stream( + self.pg0, self.pg_if_packet_sizes, do_dot1=True) + self.pg0.add_stream(pkts) + + # Enable SPAN on pg0 sub if (mirrored to vxlan) + self.vapi.sw_interface_span_enable_disable( + self.sub_if.sw_if_index, self.vxlan.sw_if_index, is_l2=1) + + self.logger.info(self.vapi.ppcli("show interface span")) + # Enable packet capturing and start packet sending + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + # Verify packets outgoing packet streams on mirrored interface (pg2) + self.logger.info("Verifying capture on interfaces %s and %s" % + (self.pg1.name, self.pg2.name)) + pg2_expected = self.get_packet_count_for_if_idx(self.pg1.sw_if_index) + pg1_pkts = self.pg1.get_capture() + pg2_pkts = [self.decap_vxlan(p) + for p in self.pg2.get_capture(pg2_expected)] + self.verify_capture( + self.pg1, + pg1_pkts, + pg2_pkts) + + self.bridge(self.vxlan.sw_if_index, is_add=0) + # Disable SPAN on pg0 sub if (mirrored to vxlan) + self.vapi.sw_interface_span_enable_disable( + self.sub_if.sw_if_index, self.vxlan.sw_if_index, state=0, is_l2=1) + self.xconnect(self.sub_if.sw_if_index, self.pg1.sw_if_index, is_add=0) + + def test_span_l2_rx_dst_gre_subif_vtr(self): + """ SPAN l2 rx mirror into gre-subif+vtr """ + + self.sub_if.admin_up() + + gre_if = VppGreInterface(self, self.pg2.local_ip4, + self.pg2.remote_ip4, + is_teb=1) + + gre_if.add_vpp_config() + gre_if.admin_up() + + gre_sub_if = VppDot1QSubint(self, gre_if, 500) + gre_sub_if.set_vtr(L2_VTR_OP.L2_POP_1, tag=500) + gre_sub_if.admin_up() + + self.bridge(gre_sub_if.sw_if_index) + # Create bi-directional cross-connects between pg0 and pg1 + self.xconnect(self.sub_if.sw_if_index, self.pg1.sw_if_index, is_add=1) + + # Create incoming packet streams for packet-generator interfaces + pkts = self.create_stream( + self.pg0, self.pg_if_packet_sizes, do_dot1=True) + self.pg0.add_stream(pkts) + + self.vapi.sw_interface_span_enable_disable( + self.sub_if.sw_if_index, gre_sub_if.sw_if_index, is_l2=1) + + # Enable packet capturing and start packet sending + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + # Verify packets outgoing packet streams on mirrored interface (pg2) + self.logger.info("Verifying capture on interfaces %s and %s" % + (self.pg1.name, self.pg2.name)) + pg2_expected = self.get_packet_count_for_if_idx(self.pg1.sw_if_index) + pg1_pkts = self.pg1.get_capture() + pg2_pkts = self.pg2.get_capture(pg2_expected) + pg2_decaped = [self.remove_tags(self.decap_gre( + p), [Tag(dot1=DOT1Q, vlan=500)]) for p in pg2_pkts] + self.verify_capture( + self.pg1, + pg1_pkts, + pg2_decaped) + + self.bridge(gre_sub_if.sw_if_index, is_add=0) + # Disable SPAN on pg0 sub if + self.vapi.sw_interface_span_enable_disable( + self.sub_if.sw_if_index, gre_sub_if.sw_if_index, state=0, + is_l2=1) + gre_if.remove_vpp_config() + self.xconnect(self.sub_if.sw_if_index, self.pg1.sw_if_index, is_add=0) + + def test_span_l2_rx_dst_vtr(self): + """ SPAN l2 rx mirror into subif+vtr """ + + self.sub_if.admin_up() + self.dst_sub_if.admin_up() + + self.bridge(self.dst_sub_if.sw_if_index) + # Create bi-directional cross-connects between pg0 and pg1 + self.xconnect(self.sub_if.sw_if_index, self.pg1.sw_if_index, is_add=1) + + # Create incoming packet streams for packet-generator interfaces + pkts = self.create_stream( + self.pg0, self.pg_if_packet_sizes, do_dot1=True) + self.pg0.add_stream(pkts) + + self.vapi.sw_interface_span_enable_disable( + self.sub_if.sw_if_index, self.dst_sub_if.sw_if_index, is_l2=1) + + # Enable packet capturing and start packet sending + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + # Verify packets outgoing packet streams on mirrored interface (pg2) + self.logger.info("Verifying capture on interfaces %s and %s" % + (self.pg1.name, self.pg2.name)) + pg2_expected = self.get_packet_count_for_if_idx(self.pg1.sw_if_index) + pg1_pkts = self.pg1.get_capture() + pg2_pkts = self.pg2.get_capture(pg2_expected) + pg2_untagged = [self.remove_tags(p, [Tag(dot1=DOT1Q, vlan=300)]) + for p in pg2_pkts] + self.verify_capture( + self.pg1, + pg1_pkts, + pg2_untagged) + + self.bridge(self.dst_sub_if.sw_if_index, is_add=0) + # Disable SPAN on pg0 sub if (mirrored to vxlan) + self.vapi.sw_interface_span_enable_disable( + self.sub_if.sw_if_index, self.dst_sub_if.sw_if_index, state=0, + is_l2=1) + self.xconnect(self.sub_if.sw_if_index, self.pg1.sw_if_index, is_add=0) + + def test_l2_tx_span(self): + """ SPAN l2 tx mirror test """ + + self.sub_if.admin_up() + self.bridge(self.pg2.sw_if_index) + # Create bi-directional cross-connects between pg0 and pg1 + self.xconnect(self.sub_if.sw_if_index, self.pg1.sw_if_index) + # Create incoming packet streams for packet-generator interfaces + pkts = self.create_stream( + self.pg0, self.pg_if_packet_sizes, do_dot1=True) + self.pg0.add_stream(pkts) + + # Enable SPAN on pg0 (mirrored to pg2) + self.vapi.sw_interface_span_enable_disable( + self.pg1.sw_if_index, self.pg2.sw_if_index, is_l2=1, state=2) + + self.logger.info(self.vapi.ppcli("show interface span")) + # Enable packet capturing and start packet sending + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + # Verify packets outgoing packet streams on mirrored interface (pg2) + self.logger.info("Verifying capture on interfaces %s and %s" % + (self.pg1.name, self.pg2.name)) + pg2_expected = self.get_packet_count_for_if_idx(self.pg1.sw_if_index) + pg1_pkts = self.pg1.get_capture() + pg2_pkts = self.pg2.get_capture(pg2_expected) + self.verify_capture( + self.pg1, + pg1_pkts, + pg2_pkts) + + self.bridge(self.pg2.sw_if_index, is_add=0) + # Disable SPAN on pg0 (mirrored to pg2) + self.vapi.sw_interface_span_enable_disable( + self.pg1.sw_if_index, self.pg2.sw_if_index, state=0, is_l2=1) + self.xconnect(self.sub_if.sw_if_index, self.pg1.sw_if_index, is_add=0) + + +if __name__ == '__main__': + unittest.main(testRunner=VppTestRunner) |