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
18 class TestDVR(VppTestCase):
19 """ Distributed Virtual Router """
22 super(TestDVR, self).setUp()
24 self.create_pg_interfaces(range(4))
25 self.create_loopback_interfaces(range(1))
27 for i in self.pg_interfaces:
30 self.loop0.config_ip4()
33 for i in self.pg_interfaces:
35 self.loop0.unconfig_ip4()
37 super(TestDVR, self).tearDown()
39 def assert_same_mac_addr(self, tx, rx):
43 self.assertEqual(t_eth.src, r_eth.src)
44 self.assertEqual(t_eth.dst, r_eth.dst)
46 def assert_has_vlan_tag(self, tag, rx):
49 self.assertEqual(tag, r_1q.vlan)
51 def assert_has_no_tag(self, rx):
53 self.assertFalse(p.haslayer(Dot1Q))
56 """ Distributed Virtual Router """
59 # A packet destined to an IP address that is L2 bridged via
62 ip_non_tag_bridged = "10.10.10.10"
63 ip_tag_bridged = "10.10.10.11"
64 any_src_addr = "1.1.1.1"
66 pkt_no_tag = (Ether(src=self.pg0.remote_mac,
67 dst=self.loop0.local_mac) /
69 dst=ip_non_tag_bridged) /
70 UDP(sport=1234, dport=1234) /
72 pkt_tag = (Ether(src=self.pg0.remote_mac,
73 dst=self.loop0.local_mac) /
76 UDP(sport=1234, dport=1234) /
80 # Two sub-interfaces so we can test VLAN tag push/pop
82 sub_if_on_pg2 = VppDot1QSubint(self, self.pg2, 92)
83 sub_if_on_pg3 = VppDot1QSubint(self, self.pg3, 93)
84 sub_if_on_pg2.admin_up()
85 sub_if_on_pg3.admin_up()
88 # Put all the interfaces into a new bridge domain
90 self.vapi.sw_interface_set_l2_bridge(self.pg0.sw_if_index, 1)
91 self.vapi.sw_interface_set_l2_bridge(self.pg1.sw_if_index, 1)
92 self.vapi.sw_interface_set_l2_bridge(sub_if_on_pg2.sw_if_index, 1)
93 self.vapi.sw_interface_set_l2_bridge(sub_if_on_pg3.sw_if_index, 1)
94 self.vapi.sw_interface_set_l2_bridge(self.loop0.sw_if_index, 1, bvi=1)
96 self.vapi.sw_interface_set_l2_tag_rewrite(sub_if_on_pg2.sw_if_index,
99 self.vapi.sw_interface_set_l2_tag_rewrite(sub_if_on_pg3.sw_if_index,
104 # Add routes to bridge the traffic via a tagged an nontagged interface
106 route_no_tag = VppIpRoute(
107 self, ip_non_tag_bridged, 32,
108 [VppRoutePath("0.0.0.0",
109 self.pg1.sw_if_index,
110 proto=DpoProto.DPO_PROTO_ETHERNET)])
111 route_no_tag.add_vpp_config()
114 # Inject the packet that arrives and leaves on a non-tagged interface
115 # Since it's 'bridged' expect that the MAC headed is unchanged.
117 self.pg0.add_stream(pkt_no_tag)
119 self.pg_enable_capture(self.pg_interfaces)
122 rx = self.pg1.get_capture(1)
124 self.assertEqual(rx[0][Ether].dst, pkt_no_tag[Ether].dst)
125 self.assertEqual(rx[0][Ether].src, pkt_no_tag[Ether].src)
128 # Add routes to bridge the traffic via a tagged interface
130 route_with_tag = VppIpRoute(
131 self, ip_tag_bridged, 32,
132 [VppRoutePath("0.0.0.0",
133 sub_if_on_pg3.sw_if_index,
134 proto=DpoProto.DPO_PROTO_ETHERNET)])
135 route_with_tag.add_vpp_config()
138 # Inject the packet that arrives and leaves on a non-tagged interface
139 # Since it's 'bridged' expect that the MAC headed is unchanged.
141 rx = self.send_and_expect(self.pg0, pkt_tag * 65, self.pg3)
142 self.assert_same_mac_addr(pkt_tag, rx)
143 self.assert_has_vlan_tag(93, rx)
148 pkt_tag_to_tag = (Ether(src=self.pg2.remote_mac,
149 dst=self.loop0.local_mac) /
152 dst=ip_tag_bridged) /
153 UDP(sport=1234, dport=1234) /
156 rx = self.send_and_expect(self.pg2, pkt_tag_to_tag * 65, self.pg3)
157 self.assert_same_mac_addr(pkt_tag_to_tag, rx)
158 self.assert_has_vlan_tag(93, rx)
163 pkt_tag_to_non_tag = (Ether(src=self.pg2.remote_mac,
164 dst=self.loop0.local_mac) /
167 dst=ip_non_tag_bridged) /
168 UDP(sport=1234, dport=1234) /
171 rx = self.send_and_expect(self.pg2, pkt_tag_to_non_tag * 65, self.pg1)
172 self.assert_same_mac_addr(pkt_tag_to_tag, rx)
173 self.assert_has_no_tag(rx)
178 self.vapi.sw_interface_set_l2_bridge(self.pg0.sw_if_index, 1,
180 self.vapi.sw_interface_set_l2_bridge(self.pg1.sw_if_index, 1,
182 self.vapi.sw_interface_set_l2_bridge(sub_if_on_pg2.sw_if_index,
184 self.vapi.sw_interface_set_l2_bridge(sub_if_on_pg3.sw_if_index,
186 self.vapi.sw_interface_set_l2_bridge(self.loop0.sw_if_index,
190 # the explicit route delete is require so it happens before
191 # the sbu-interface delete. subinterface delete is required
192 # because that object type does not use the object registry
194 route_no_tag.remove_vpp_config()
195 route_with_tag.remove_vpp_config()
196 sub_if_on_pg3.remove_vpp_config()
197 sub_if_on_pg2.remove_vpp_config()
199 def test_l2_emulation(self):
203 # non distinct L3 packets, in the tag/non-tag combos
205 pkt_no_tag = (Ether(src=self.pg0.remote_mac,
206 dst=self.pg1.remote_mac) /
209 UDP(sport=1234, dport=1234) /
211 pkt_to_tag = (Ether(src=self.pg0.remote_mac,
212 dst=self.pg2.remote_mac) /
215 UDP(sport=1234, dport=1234) /
217 pkt_from_tag = (Ether(src=self.pg3.remote_mac,
218 dst=self.pg2.remote_mac) /
222 UDP(sport=1234, dport=1234) /
224 pkt_from_to_tag = (Ether(src=self.pg3.remote_mac,
225 dst=self.pg2.remote_mac) /
229 UDP(sport=1234, dport=1234) /
231 pkt_bcast = (Ether(src=self.pg0.remote_mac,
232 dst="ff:ff:ff:ff:ff:ff") /
234 dst="255.255.255.255") /
235 UDP(sport=1234, dport=1234) /
239 # A couple of sub-interfaces for tags
241 sub_if_on_pg2 = VppDot1QSubint(self, self.pg2, 92)
242 sub_if_on_pg3 = VppDot1QSubint(self, self.pg3, 93)
243 sub_if_on_pg2.admin_up()
244 sub_if_on_pg3.admin_up()
247 # Put all the interfaces into a new bridge domain
249 self.vapi.sw_interface_set_l2_bridge(self.pg0.sw_if_index, 1)
250 self.vapi.sw_interface_set_l2_bridge(self.pg1.sw_if_index, 1)
251 self.vapi.sw_interface_set_l2_bridge(sub_if_on_pg2.sw_if_index, 1)
252 self.vapi.sw_interface_set_l2_bridge(sub_if_on_pg3.sw_if_index, 1)
253 self.vapi.sw_interface_set_l2_tag_rewrite(sub_if_on_pg2.sw_if_index,
256 self.vapi.sw_interface_set_l2_tag_rewrite(sub_if_on_pg3.sw_if_index,
261 # Disable UU flooding, learning and ARM terminaation. makes this test
262 # easier as unicast packets are dropped if not extracted.
264 self.vapi.bridge_flags(1, 0, (1 << 0) | (1 << 3) | (1 << 4))
267 # Add a DVR route to steer traffic at L3
269 route_1 = VppIpRoute(self, "1.1.1.1", 32,
270 [VppRoutePath("0.0.0.0",
271 self.pg1.sw_if_index,
272 proto=DpoProto.DPO_PROTO_ETHERNET)])
273 route_2 = VppIpRoute(self, "1.1.1.2", 32,
274 [VppRoutePath("0.0.0.0",
275 sub_if_on_pg2.sw_if_index,
276 proto=DpoProto.DPO_PROTO_ETHERNET)])
277 route_1.add_vpp_config()
278 route_2.add_vpp_config()
281 # packets are dropped because bridge does not flood unkown unicast
283 self.send_and_assert_no_replies(self.pg0, pkt_no_tag)
286 # Enable L3 extraction on pgs
288 self.vapi.sw_interface_set_l2_emulation(self.pg0.sw_if_index)
289 self.vapi.sw_interface_set_l2_emulation(self.pg1.sw_if_index)
290 self.vapi.sw_interface_set_l2_emulation(sub_if_on_pg2.sw_if_index)
291 self.vapi.sw_interface_set_l2_emulation(sub_if_on_pg3.sw_if_index)
294 # now we expect the packet forward according to the DVR route
296 rx = self.send_and_expect(self.pg0, pkt_no_tag * 65, self.pg1)
297 self.assert_same_mac_addr(pkt_no_tag, rx)
298 self.assert_has_no_tag(rx)
300 rx = self.send_and_expect(self.pg0, pkt_to_tag * 65, self.pg2)
301 self.assert_same_mac_addr(pkt_to_tag, rx)
302 self.assert_has_vlan_tag(92, rx)
304 rx = self.send_and_expect(self.pg3, pkt_from_tag * 65, self.pg1)
305 self.assert_same_mac_addr(pkt_from_tag, rx)
306 self.assert_has_no_tag(rx)
308 rx = self.send_and_expect(self.pg3, pkt_from_to_tag * 65, self.pg2)
309 self.assert_same_mac_addr(pkt_from_tag, rx)
310 self.assert_has_vlan_tag(92, rx)
313 # but broadcast packets are still flooded
315 self.send_and_expect(self.pg0, pkt_bcast * 33, self.pg2)
320 self.vapi.sw_interface_set_l2_emulation(self.pg0.sw_if_index,
322 self.vapi.sw_interface_set_l2_emulation(self.pg1.sw_if_index,
324 self.vapi.sw_interface_set_l2_emulation(sub_if_on_pg2.sw_if_index,
326 self.vapi.sw_interface_set_l2_emulation(sub_if_on_pg3.sw_if_index,
329 self.vapi.sw_interface_set_l2_bridge(self.pg0.sw_if_index,
331 self.vapi.sw_interface_set_l2_bridge(self.pg1.sw_if_index,
333 self.vapi.sw_interface_set_l2_bridge(sub_if_on_pg2.sw_if_index,
335 self.vapi.sw_interface_set_l2_bridge(sub_if_on_pg3.sw_if_index,
338 route_1.remove_vpp_config()
339 route_2.remove_vpp_config()
340 sub_if_on_pg3.remove_vpp_config()
341 sub_if_on_pg2.remove_vpp_config()
344 if __name__ == '__main__':
345 unittest.main(testRunner=VppTestRunner)