6 from framework import VppTestCase, VppTestRunner
7 from vpp_sub_interface import VppSubInterface, VppDot1QSubint
8 from vpp_ip_route import VppIpRoute, VppRoutePath, DpoProto, VppIpMRoute, \
9 VppMRoutePath, MRouteEntryFlags, MRouteItfFlags
10 from vpp_papi_provider import L2_VTR_OP
12 from scapy.packet import Raw
13 from scapy.layers.l2 import Ether, Dot1Q, ARP
14 from scapy.layers.inet import IP, UDP
16 from socket import AF_INET, inet_pton
19 class TestDVR(VppTestCase):
20 """ Distributed Virtual Router """
23 super(TestDVR, self).setUp()
25 self.create_pg_interfaces(range(4))
26 self.create_loopback_interfaces(range(1))
28 for i in self.pg_interfaces:
31 self.loop0.config_ip4()
34 for i in self.pg_interfaces:
36 self.loop0.unconfig_ip4()
38 super(TestDVR, self).tearDown()
40 def assert_same_mac_addr(self, tx, rx):
44 self.assertEqual(t_eth.src, r_eth.src)
45 self.assertEqual(t_eth.dst, r_eth.dst)
47 def assert_has_vlan_tag(self, tag, rx):
50 self.assertEqual(tag, r_1q.vlan)
52 def assert_has_no_tag(self, rx):
54 self.assertFalse(p.haslayer(Dot1Q))
57 """ Distributed Virtual Router """
60 # A packet destined to an IP address that is L2 bridged via
63 ip_non_tag_bridged = "10.10.10.10"
64 ip_tag_bridged = "10.10.10.11"
65 any_src_addr = "1.1.1.1"
67 pkt_no_tag = (Ether(src=self.pg0.remote_mac,
68 dst=self.loop0.local_mac) /
70 dst=ip_non_tag_bridged) /
71 UDP(sport=1234, dport=1234) /
73 pkt_tag = (Ether(src=self.pg0.remote_mac,
74 dst=self.loop0.local_mac) /
77 UDP(sport=1234, dport=1234) /
81 # Two sub-interfaces so we can test VLAN tag push/pop
83 sub_if_on_pg2 = VppDot1QSubint(self, self.pg2, 92)
84 sub_if_on_pg3 = VppDot1QSubint(self, self.pg3, 93)
85 sub_if_on_pg2.admin_up()
86 sub_if_on_pg3.admin_up()
89 # Put all the interfaces into a new bridge domain
91 self.vapi.sw_interface_set_l2_bridge(self.pg0.sw_if_index, 1)
92 self.vapi.sw_interface_set_l2_bridge(self.pg1.sw_if_index, 1)
93 self.vapi.sw_interface_set_l2_bridge(sub_if_on_pg2.sw_if_index, 1)
94 self.vapi.sw_interface_set_l2_bridge(sub_if_on_pg3.sw_if_index, 1)
95 self.vapi.sw_interface_set_l2_bridge(self.loop0.sw_if_index, 1, bvi=1)
97 self.vapi.sw_interface_set_l2_tag_rewrite(sub_if_on_pg2.sw_if_index,
100 self.vapi.sw_interface_set_l2_tag_rewrite(sub_if_on_pg3.sw_if_index,
105 # Add routes to bridge the traffic via a tagged an nontagged interface
107 route_no_tag = VppIpRoute(
108 self, ip_non_tag_bridged, 32,
109 [VppRoutePath("0.0.0.0",
110 self.pg1.sw_if_index,
112 route_no_tag.add_vpp_config()
115 # Inject the packet that arrives and leaves on a non-tagged interface
116 # Since it's 'bridged' expect that the MAC headed is unchanged.
118 rx = self.send_and_expect(self.pg0, pkt_no_tag * 65, self.pg1)
119 self.assert_same_mac_addr(pkt_no_tag, rx)
120 self.assert_has_no_tag(rx)
123 # Add routes to bridge the traffic via a tagged interface
125 route_with_tag = VppIpRoute(
126 self, ip_tag_bridged, 32,
127 [VppRoutePath("0.0.0.0",
128 sub_if_on_pg3.sw_if_index,
130 route_with_tag.add_vpp_config()
133 # Inject the packet that arrives non-tag and leaves on a tagged
136 rx = self.send_and_expect(self.pg0, pkt_tag * 65, self.pg3)
137 self.assert_same_mac_addr(pkt_tag, rx)
138 self.assert_has_vlan_tag(93, rx)
143 pkt_tag_to_tag = (Ether(src=self.pg2.remote_mac,
144 dst=self.loop0.local_mac) /
147 dst=ip_tag_bridged) /
148 UDP(sport=1234, dport=1234) /
151 rx = self.send_and_expect(self.pg2, pkt_tag_to_tag * 65, self.pg3)
152 self.assert_same_mac_addr(pkt_tag_to_tag, rx)
153 self.assert_has_vlan_tag(93, rx)
158 pkt_tag_to_non_tag = (Ether(src=self.pg2.remote_mac,
159 dst=self.loop0.local_mac) /
162 dst=ip_non_tag_bridged) /
163 UDP(sport=1234, dport=1234) /
166 rx = self.send_and_expect(self.pg2, pkt_tag_to_non_tag * 65, self.pg1)
167 self.assert_same_mac_addr(pkt_tag_to_tag, rx)
168 self.assert_has_no_tag(rx)
171 # Add an output L3 ACL that will block the traffic
173 rule_1 = ({'is_permit': 0,
176 'srcport_or_icmptype_first': 1234,
177 'srcport_or_icmptype_last': 1234,
178 'src_ip_prefix_len': 32,
179 'src_ip_addr': inet_pton(AF_INET, any_src_addr),
180 'dstport_or_icmpcode_first': 1234,
181 'dstport_or_icmpcode_last': 1234,
182 'dst_ip_prefix_len': 32,
183 'dst_ip_addr': inet_pton(AF_INET, ip_non_tag_bridged)})
184 acl = self.vapi.acl_add_replace(acl_index=4294967295,
188 # Apply the ACL on the output interface
190 self.vapi.acl_interface_set_acl_list(self.pg1.sw_if_index,
195 # Send packet's that should match the ACL and be dropped
197 rx = self.send_and_assert_no_replies(self.pg2, pkt_tag_to_non_tag * 65)
202 self.vapi.acl_interface_set_acl_list(self.pg1.sw_if_index,
204 self.vapi.acl_del(acl.acl_index)
206 self.vapi.sw_interface_set_l2_bridge(self.pg0.sw_if_index, 1,
208 self.vapi.sw_interface_set_l2_bridge(self.pg1.sw_if_index, 1,
210 self.vapi.sw_interface_set_l2_bridge(sub_if_on_pg2.sw_if_index,
212 self.vapi.sw_interface_set_l2_bridge(sub_if_on_pg3.sw_if_index,
214 self.vapi.sw_interface_set_l2_bridge(self.loop0.sw_if_index,
218 # the explicit route delete is require so it happens before
219 # the sbu-interface delete. subinterface delete is required
220 # because that object type does not use the object registry
222 route_no_tag.remove_vpp_config()
223 route_with_tag.remove_vpp_config()
224 sub_if_on_pg3.remove_vpp_config()
225 sub_if_on_pg2.remove_vpp_config()
227 def test_l2_emulation(self):
231 # non distinct L3 packets, in the tag/non-tag combos
233 pkt_no_tag = (Ether(src=self.pg0.remote_mac,
234 dst=self.pg1.remote_mac) /
237 UDP(sport=1234, dport=1234) /
239 pkt_to_tag = (Ether(src=self.pg0.remote_mac,
240 dst=self.pg2.remote_mac) /
243 UDP(sport=1234, dport=1234) /
245 pkt_from_tag = (Ether(src=self.pg3.remote_mac,
246 dst=self.pg2.remote_mac) /
250 UDP(sport=1234, dport=1234) /
252 pkt_from_to_tag = (Ether(src=self.pg3.remote_mac,
253 dst=self.pg2.remote_mac) /
257 UDP(sport=1234, dport=1234) /
259 pkt_bcast = (Ether(src=self.pg0.remote_mac,
260 dst="ff:ff:ff:ff:ff:ff") /
262 dst="255.255.255.255") /
263 UDP(sport=1234, dport=1234) /
267 # A couple of sub-interfaces for tags
269 sub_if_on_pg2 = VppDot1QSubint(self, self.pg2, 92)
270 sub_if_on_pg3 = VppDot1QSubint(self, self.pg3, 93)
271 sub_if_on_pg2.admin_up()
272 sub_if_on_pg3.admin_up()
275 # Put all the interfaces into a new bridge domain
277 self.vapi.sw_interface_set_l2_bridge(self.pg0.sw_if_index, 1)
278 self.vapi.sw_interface_set_l2_bridge(self.pg1.sw_if_index, 1)
279 self.vapi.sw_interface_set_l2_bridge(sub_if_on_pg2.sw_if_index, 1)
280 self.vapi.sw_interface_set_l2_bridge(sub_if_on_pg3.sw_if_index, 1)
281 self.vapi.sw_interface_set_l2_tag_rewrite(sub_if_on_pg2.sw_if_index,
284 self.vapi.sw_interface_set_l2_tag_rewrite(sub_if_on_pg3.sw_if_index,
289 # Disable UU flooding, learning and ARP terminaation. makes this test
290 # easier as unicast packets are dropped if not extracted.
292 self.vapi.bridge_flags(1, 0, (1 << 0) | (1 << 3) | (1 << 4))
295 # Add a DVR route to steer traffic at L3
297 route_1 = VppIpRoute(self, "1.1.1.1", 32,
298 [VppRoutePath("0.0.0.0",
299 self.pg1.sw_if_index,
301 route_2 = VppIpRoute(self, "1.1.1.2", 32,
302 [VppRoutePath("0.0.0.0",
303 sub_if_on_pg2.sw_if_index,
305 route_1.add_vpp_config()
306 route_2.add_vpp_config()
309 # packets are dropped because bridge does not flood unkown unicast
311 self.send_and_assert_no_replies(self.pg0, pkt_no_tag)
314 # Enable L3 extraction on pgs
316 self.vapi.sw_interface_set_l2_emulation(self.pg0.sw_if_index)
317 self.vapi.sw_interface_set_l2_emulation(self.pg1.sw_if_index)
318 self.vapi.sw_interface_set_l2_emulation(sub_if_on_pg2.sw_if_index)
319 self.vapi.sw_interface_set_l2_emulation(sub_if_on_pg3.sw_if_index)
322 # now we expect the packet forward according to the DVR route
324 rx = self.send_and_expect(self.pg0, pkt_no_tag * 65, self.pg1)
325 self.assert_same_mac_addr(pkt_no_tag, rx)
326 self.assert_has_no_tag(rx)
328 rx = self.send_and_expect(self.pg0, pkt_to_tag * 65, self.pg2)
329 self.assert_same_mac_addr(pkt_to_tag, rx)
330 self.assert_has_vlan_tag(92, rx)
332 rx = self.send_and_expect(self.pg3, pkt_from_tag * 65, self.pg1)
333 self.assert_same_mac_addr(pkt_from_tag, rx)
334 self.assert_has_no_tag(rx)
336 rx = self.send_and_expect(self.pg3, pkt_from_to_tag * 65, self.pg2)
337 self.assert_same_mac_addr(pkt_from_tag, rx)
338 self.assert_has_vlan_tag(92, rx)
341 # but broadcast packets are still flooded
343 self.send_and_expect(self.pg0, pkt_bcast * 33, self.pg2)
348 self.vapi.sw_interface_set_l2_emulation(self.pg0.sw_if_index,
350 self.vapi.sw_interface_set_l2_emulation(self.pg1.sw_if_index,
352 self.vapi.sw_interface_set_l2_emulation(sub_if_on_pg2.sw_if_index,
354 self.vapi.sw_interface_set_l2_emulation(sub_if_on_pg3.sw_if_index,
357 self.vapi.sw_interface_set_l2_bridge(self.pg0.sw_if_index,
359 self.vapi.sw_interface_set_l2_bridge(self.pg1.sw_if_index,
361 self.vapi.sw_interface_set_l2_bridge(sub_if_on_pg2.sw_if_index,
363 self.vapi.sw_interface_set_l2_bridge(sub_if_on_pg3.sw_if_index,
366 route_1.remove_vpp_config()
367 route_2.remove_vpp_config()
368 sub_if_on_pg3.remove_vpp_config()
369 sub_if_on_pg2.remove_vpp_config()
372 if __name__ == '__main__':
373 unittest.main(testRunner=VppTestRunner)