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#!/usr/bin/env python
import unittest
from framework import VppTestCase, VppTestRunner
from vpp_papi_provider import QOS_SOURCE
from vpp_ip_route import VppIpRoute, VppRoutePath
from scapy.packet import Raw
from scapy.layers.l2 import Ether
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)
|
