#!/usr/bin/env python import unittest import socket import struct from framework import VppTestCase, VppTestRunner from vpp_object import VppObject from vpp_papi_provider import QOS_SOURCE from vpp_ip_route import VppIpRoute, VppRoutePath, VppMplsRoute from vpp_sub_interface import VppSubInterface, VppDot1QSubint from scapy.packet import Raw from scapy.layers.l2 import Ether, Dot1Q from scapy.layers.inet import IP, UDP from scapy.layers.inet6 import IPv6 from scapy.contrib.mpls import MPLS class TestQOS(VppTestCase): """ QOS Test Case """ def setUp(self): super(TestQOS, self).setUp() self.create_pg_interfaces(range(5)) for i in self.pg_interfaces: i.admin_up() i.config_ip4() i.resolve_arp() i.config_ip6() i.resolve_ndp() def tearDown(self): for i in self.pg_interfaces: i.unconfig_ip4() i.unconfig_ip6() super(TestQOS, self).tearDown() def test_qos_ip(self): """ QoS Mark IP """ # # for table 1 map the n=0xff possible values of input QoS mark, # n to 1-n # output = [chr(0)] * 256 for i in range(0, 255): output[i] = chr(255 - i) os = ''.join(output) rows = [{'outputs': os}, {'outputs': os}, {'outputs': os}, {'outputs': os}] self.vapi.qos_egress_map_update(1, rows) # # For table 2 (and up) use the value n for everything # output = [chr(2)] * 256 os = ''.join(output) rows = [{'outputs': os}, {'outputs': os}, {'outputs': os}, {'outputs': os}] self.vapi.qos_egress_map_update(2, rows) output = [chr(3)] * 256 os = ''.join(output) rows = [{'outputs': os}, {'outputs': os}, {'outputs': os}, {'outputs': os}] self.vapi.qos_egress_map_update(3, rows) output = [chr(4)] * 256 os = ''.join(output) rows = [{'outputs': os}, {'outputs': os}, {'outputs': os}, {'outputs': os}] self.vapi.qos_egress_map_update(4, rows) self.vapi.qos_egress_map_update(5, rows) self.vapi.qos_egress_map_update(6, rows) self.vapi.qos_egress_map_update(7, rows) self.logger.info(self.vapi.cli("sh qos eg map")) # # Bind interface pgN to table n # self.vapi.qos_mark_enable_disable(self.pg1.sw_if_index, QOS_SOURCE.IP, 1, 1) self.vapi.qos_mark_enable_disable(self.pg2.sw_if_index, QOS_SOURCE.IP, 2, 1) self.vapi.qos_mark_enable_disable(self.pg3.sw_if_index, QOS_SOURCE.IP, 3, 1) self.vapi.qos_mark_enable_disable(self.pg4.sw_if_index, QOS_SOURCE.IP, 4, 1) # # packets ingress on Pg0 # p_v4 = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4, tos=1) / UDP(sport=1234, dport=1234) / Raw(chr(100) * 65)) p_v6 = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / IPv6(src=self.pg0.remote_ip6, dst=self.pg1.remote_ip6, tc=1) / UDP(sport=1234, dport=1234) / Raw(chr(100) * 65)) # # Since we have not yet enabled the recording of the input QoS # from the input iP header, the egress packet's ToS will be unchanged # rx = self.send_and_expect(self.pg0, p_v4 * 65, self.pg1) for p in rx: self.assertEqual(p[IP].tos, 1) rx = self.send_and_expect(self.pg0, p_v6 * 65, self.pg1) for p in rx: self.assertEqual(p[IPv6].tc, 1) # # Enable QoS recrding on IP input for pg0 # self.vapi.qos_record_enable_disable(self.pg0.sw_if_index, QOS_SOURCE.IP, 1) # # send the same packets, this time expect the input TOS of 1 # to be mapped to pg1's egress value of 254 # rx = self.send_and_expect(self.pg0, p_v4 * 65, self.pg1) for p in rx: self.assertEqual(p[IP].tos, 254) rx = self.send_and_expect(self.pg0, p_v6 * 65, self.pg1) for p in rx: self.assertEqual(p[IPv6].tc, 254) # # different input ToS to test the mapping # p_v4[IP].tos = 127 rx = self.send_and_expect(self.pg0, p_v4 * 65, self.pg1) for p in rx: self.assertEqual(p[IP].tos, 128) p_v6[IPv6].tc = 127 rx = self.send_and_expect(self.pg0, p_v6 * 65, self.pg1) for p in rx: self.assertEqual(p[IPv6].tc, 128) p_v4[IP].tos = 254 rx = self.send_and_expect(self.pg0, p_v4 * 65, self.pg1) for p in rx: self.assertEqual(p[IP].tos, 1) p_v6[IPv6].tc = 254 rx = self.send_and_expect(self.pg0, p_v6 * 65, self.pg1) for p in rx: self.assertEqual(p[IPv6].tc, 1) # # send packets out the other interfaces to test the maps are # correctly applied # p_v4[IP].dst = self.pg2.remote_ip4 rx = self.send_and_expect(self.pg0, p_v4 * 65, self.pg2) for p in rx: self.assertEqual(p[IP].tos, 2) p_v4[IP].dst = self.pg3.remote_ip4 rx = self.send_and_expect(self.pg0, p_v4 * 65, self.pg3) for p in rx: self.assertEqual(p[IP].tos, 3) p_v6[IPv6].dst = self.pg3.remote_ip6 rx = self.send_and_expect(self.pg0, p_v6 * 65, self.pg3) for p in rx: self.assertEqual(p[IPv6].tc, 3) # # remove the map on pg2 and pg3, now expect an unchanged IP tos # self.vapi.qos_mark_enable_disable(self.pg2.sw_if_index, QOS_SOURCE.IP, 2, 0) self.vapi.qos_mark_enable_disable(self.pg3.sw_if_index, QOS_SOURCE.IP, 3, 0) self.logger.info(self.vapi.cli("sh int feat pg2")) p_v4[IP].dst = self.pg2.remote_ip4 rx = self.send_and_expect(self.pg0, p_v4 * 65, self.pg2) for p in rx: self.assertEqual(p[IP].tos, 254) p_v4[IP].dst = self.pg3.remote_ip4 rx = self.send_and_expect(self.pg0, p_v4 * 65, self.pg3) for p in rx: self.assertEqual(p[IP].tos, 254) # # still mapping out of pg1 # p_v4[IP].dst = self.pg1.remote_ip4 rx = self.send_and_expect(self.pg0, p_v4 * 65, self.pg1) for p in rx: self.assertEqual(p[IP].tos, 1) # # disable the input recording on pg0 # self.vapi.qos_record_enable_disable(self.pg0.sw_if_index, QOS_SOURCE.IP, 0) # # back to an unchanged TOS value # rx = self.send_and_expect(self.pg0, p_v4 * 65, self.pg1) for p in rx: self.assertEqual(p[IP].tos, 254) # # disable the egress map on pg1 and pg4 # self.vapi.qos_mark_enable_disable(self.pg1.sw_if_index, QOS_SOURCE.IP, 1, 0) self.vapi.qos_mark_enable_disable(self.pg4.sw_if_index, QOS_SOURCE.IP, 4, 0) # # unchanged Tos on pg1 # rx = self.send_and_expect(self.pg0, p_v4 * 65, self.pg1) for p in rx: self.assertEqual(p[IP].tos, 254) # # clean-up the masp # self.vapi.qos_egress_map_delete(1) self.vapi.qos_egress_map_delete(4) self.vapi.qos_egress_map_delete(2) self.vapi.qos_egress_map_delete(3) self.vapi.qos_egress_map_delete(5) self.vapi.qos_egress_map_delete(6) self.vapi.qos_egress_map_delete(7) def test_qos_mpls(self): """ QoS Mark MPLS """ # # 255 QoS for all input values # output = [chr(255)] * 256 os = ''.join(output) rows = [{'outputs': os}, {'outputs': os}, {'outputs': os}, {'outputs': os}] self.vapi.qos_egress_map_update(1, rows) # # a route with 1 MPLS label # route_10_0_0_1 = VppIpRoute(self, "10.0.0.1", 32, [VppRoutePath(self.pg1.remote_ip4, self.pg1.sw_if_index, labels=[32])]) route_10_0_0_1.add_vpp_config() # # a route with 3 MPLS labels # route_10_0_0_3 = VppIpRoute(self, "10.0.0.3", 32, [VppRoutePath(self.pg1.remote_ip4, self.pg1.sw_if_index, labels=[63, 33, 34])]) route_10_0_0_3.add_vpp_config() # # enable IP QoS recording on the input Pg0 and MPLS egress marking # on Pg1 # self.vapi.qos_record_enable_disable(self.pg0.sw_if_index, QOS_SOURCE.IP, 1) self.vapi.qos_mark_enable_disable(self.pg1.sw_if_index, QOS_SOURCE.MPLS, 1, 1) # # packet that will get one label added and 3 labels added resp. # p_1 = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / IP(src=self.pg0.remote_ip4, dst="10.0.0.1", tos=1) / UDP(sport=1234, dport=1234) / Raw(chr(100) * 65)) p_3 = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / IP(src=self.pg0.remote_ip4, dst="10.0.0.3", tos=1) / UDP(sport=1234, dport=1234) / Raw(chr(100) * 65)) rx = self.send_and_expect(self.pg0, p_1 * 65, self.pg1) # # only 3 bits of ToS value in MPLS make sure tos is correct # and the label and EOS bit have not been corrupted # for p in rx: self.assertEqual(p[MPLS].cos, 7) self.assertEqual(p[MPLS].label, 32) self.assertEqual(p[MPLS].s, 1) rx = self.send_and_expect(self.pg0, p_3 * 65, self.pg1) for p in rx: self.assertEqual(p[MPLS].cos, 7) self.assertEqual(p[MPLS].label, 63) self.assertEqual(p[MPLS].s, 0) h = p[MPLS].payload self.assertEqual(h[MPLS].cos, 7) self.assertEqual(h[MPLS].label, 33) self.assertEqual(h[MPLS].s, 0) h = h[MPLS].payload self.assertEqual(h[MPLS].cos, 7) self.assertEqual(h[MPLS].label, 34) self.assertEqual(h[MPLS].s, 1) # # cleanup # self.vapi.qos_record_enable_disable(self.pg0.sw_if_index, QOS_SOURCE.IP, 0) self.vapi.qos_mark_enable_disable(self.pg1.sw_if_index, QOS_SOURCE.MPLS, 1, 0) self.vapi.qos_egress_map_delete(1) if __name__ == '__main__': unittest.main(testRunner=VppTestRunner)