diff options
Diffstat (limited to 'test/test_dvr.py')
| -rw-r--r-- | test/test_dvr.py | 242 |
1 files changed, 214 insertions, 28 deletions
diff --git a/test/test_dvr.py b/test/test_dvr.py index f5d5e54a15f..e8a9c04a1bb 100644 --- a/test/test_dvr.py +++ b/test/test_dvr.py @@ -5,7 +5,8 @@ import unittest from framework import VppTestCase, VppTestRunner from vpp_sub_interface import VppSubInterface, VppDot1QSubint -from vpp_ip_route import VppIpRoute, VppRoutePath, DpoProto +from vpp_ip_route import VppIpRoute, VppRoutePath, DpoProto, VppIpMRoute, \ + VppMRoutePath, MRouteEntryFlags, MRouteItfFlags from vpp_papi_provider import L2_VTR_OP from scapy.packet import Raw @@ -35,6 +36,39 @@ class TestDVR(VppTestCase): super(TestDVR, self).tearDown() + def send_and_assert_no_replies(self, intf, pkts): + self.vapi.cli("clear trace") + intf.add_stream(pkts) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + for i in self.pg_interfaces: + i.get_capture(0) + i.assert_nothing_captured() + + def send_and_expect(self, input, pkts, output): + self.vapi.cli("clear trace") + input.add_stream(pkts) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + rx = output.get_capture(len(pkts)) + return rx + + def assert_same_mac_addr(self, tx, rx): + t_eth = tx[Ether] + for p in rx: + r_eth = p[Ether] + self.assertEqual(t_eth.src, r_eth.src) + self.assertEqual(t_eth.dst, r_eth.dst) + + def assert_has_vlan_tag(self, tag, rx): + for p in rx: + r_1q = p[Dot1Q] + self.assertEqual(tag, r_1q.vlan) + + def assert_has_no_tag(self, rx): + for p in rx: + self.assertFalse(p.haslayer(Dot1Q)) + def test_dvr(self): """ Distributed Virtual Router """ @@ -110,27 +144,20 @@ class TestDVR(VppTestCase): # # Add routes to bridge the traffic via a tagged interface # - route_no_tag = VppIpRoute( + route_with_tag = VppIpRoute( self, ip_tag_bridged, 32, [VppRoutePath("0.0.0.0", sub_if_on_pg3.sw_if_index, proto=DpoProto.DPO_PROTO_ETHERNET)]) - route_no_tag.add_vpp_config() + route_with_tag.add_vpp_config() # # Inject the packet that arrives and leaves on a non-tagged interface # Since it's 'bridged' expect that the MAC headed is unchanged. # - self.pg0.add_stream(pkt_tag) - - self.pg_enable_capture(self.pg_interfaces) - self.pg_start() - - rx = self.pg3.get_capture(1) - - self.assertEqual(rx[0][Ether].dst, pkt_tag[Ether].dst) - self.assertEqual(rx[0][Ether].src, pkt_tag[Ether].src) - self.assertEqual(rx[0][Dot1Q].vlan, 93) + rx = self.send_and_expect(self.pg0, pkt_tag * 65, self.pg3) + self.assert_same_mac_addr(pkt_tag, rx) + self.assert_has_vlan_tag(93, rx) # # Tag to tag @@ -143,14 +170,9 @@ class TestDVR(VppTestCase): UDP(sport=1234, dport=1234) / Raw('\xa5' * 100)) - self.pg2.add_stream(pkt_tag_to_tag) - self.pg_enable_capture(self.pg_interfaces) - self.pg_start() - rx = self.pg3.get_capture(1) - - self.assertEqual(rx[0][Ether].dst, pkt_tag_to_tag[Ether].dst) - self.assertEqual(rx[0][Ether].src, pkt_tag_to_tag[Ether].src) - self.assertEqual(rx[0][Dot1Q].vlan, 93) + rx = self.send_and_expect(self.pg2, pkt_tag_to_tag * 65, self.pg3) + self.assert_same_mac_addr(pkt_tag_to_tag, rx) + self.assert_has_vlan_tag(93, rx) # # Tag to non-Tag @@ -163,14 +185,178 @@ class TestDVR(VppTestCase): UDP(sport=1234, dport=1234) / Raw('\xa5' * 100)) - self.pg2.add_stream(pkt_tag_to_non_tag) - self.pg_enable_capture(self.pg_interfaces) - self.pg_start() - rx = self.pg1.get_capture(1) + rx = self.send_and_expect(self.pg2, pkt_tag_to_non_tag * 65, self.pg1) + self.assert_same_mac_addr(pkt_tag_to_tag, rx) + self.assert_has_no_tag(rx) + + # + # cleanup + # + self.vapi.sw_interface_set_l2_bridge(self.pg0.sw_if_index, 1, + enable=0) + self.vapi.sw_interface_set_l2_bridge(self.pg1.sw_if_index, 1, + enable=0) + self.vapi.sw_interface_set_l2_bridge(sub_if_on_pg2.sw_if_index, + 1, enable=0) + self.vapi.sw_interface_set_l2_bridge(sub_if_on_pg3.sw_if_index, + 1, enable=0) + self.vapi.sw_interface_set_l2_bridge(self.loop0.sw_if_index, + 1, bvi=1, enable=0) + + # + # the explicit route delete is require so it happens before + # the sbu-interface delete. subinterface delete is required + # because that object type does not use the object registry + # + route_no_tag.remove_vpp_config() + route_with_tag.remove_vpp_config() + sub_if_on_pg3.remove_vpp_config() + sub_if_on_pg2.remove_vpp_config() + + def test_l2_emulation(self): + """ L2 Emulation """ + + # + # non distinct L3 packets, in the tag/non-tag combos + # + pkt_no_tag = (Ether(src=self.pg0.remote_mac, + dst=self.pg1.remote_mac) / + IP(src="2.2.2.2", + dst="1.1.1.1") / + UDP(sport=1234, dport=1234) / + Raw('\xa5' * 100)) + pkt_to_tag = (Ether(src=self.pg0.remote_mac, + dst=self.pg2.remote_mac) / + IP(src="2.2.2.2", + dst="1.1.1.2") / + UDP(sport=1234, dport=1234) / + Raw('\xa5' * 100)) + pkt_from_tag = (Ether(src=self.pg3.remote_mac, + dst=self.pg2.remote_mac) / + Dot1Q(vlan=93) / + IP(src="2.2.2.2", + dst="1.1.1.1") / + UDP(sport=1234, dport=1234) / + Raw('\xa5' * 100)) + pkt_from_to_tag = (Ether(src=self.pg3.remote_mac, + dst=self.pg2.remote_mac) / + Dot1Q(vlan=93) / + IP(src="2.2.2.2", + dst="1.1.1.2") / + UDP(sport=1234, dport=1234) / + Raw('\xa5' * 100)) + pkt_bcast = (Ether(src=self.pg0.remote_mac, + dst="ff:ff:ff:ff:ff:ff") / + IP(src="2.2.2.2", + dst="255.255.255.255") / + UDP(sport=1234, dport=1234) / + Raw('\xa5' * 100)) + + # + # A couple of sub-interfaces for tags + # + sub_if_on_pg2 = VppDot1QSubint(self, self.pg2, 92) + sub_if_on_pg3 = VppDot1QSubint(self, self.pg3, 93) + sub_if_on_pg2.admin_up() + sub_if_on_pg3.admin_up() + + # + # Put all the interfaces into a new bridge domain + # + self.vapi.sw_interface_set_l2_bridge(self.pg0.sw_if_index, 1) + self.vapi.sw_interface_set_l2_bridge(self.pg1.sw_if_index, 1) + self.vapi.sw_interface_set_l2_bridge(sub_if_on_pg2.sw_if_index, 1) + self.vapi.sw_interface_set_l2_bridge(sub_if_on_pg3.sw_if_index, 1) + self.vapi.sw_interface_set_l2_tag_rewrite(sub_if_on_pg2.sw_if_index, + L2_VTR_OP.L2_POP_1, + 92) + self.vapi.sw_interface_set_l2_tag_rewrite(sub_if_on_pg3.sw_if_index, + L2_VTR_OP.L2_POP_1, + 93) + + # + # Disable UU flooding, learning and ARM terminaation. makes this test + # easier as unicast packets are dropped if not extracted. + # + self.vapi.bridge_flags(1, 0, (1 << 0) | (1 << 3) | (1 << 4)) + + # + # Add a DVR route to steer traffic at L3 + # + route_1 = VppIpRoute(self, "1.1.1.1", 32, + [VppRoutePath("0.0.0.0", + self.pg1.sw_if_index, + proto=DpoProto.DPO_PROTO_ETHERNET)]) + route_2 = VppIpRoute(self, "1.1.1.2", 32, + [VppRoutePath("0.0.0.0", + sub_if_on_pg2.sw_if_index, + proto=DpoProto.DPO_PROTO_ETHERNET)]) + route_1.add_vpp_config() + route_2.add_vpp_config() + + # + # packets are dropped because bridge does not flood unkown unicast + # + self.send_and_assert_no_replies(self.pg0, pkt_no_tag) + + # + # Enable L3 extraction on pgs + # + self.vapi.sw_interface_set_l2_emulation(self.pg0.sw_if_index) + self.vapi.sw_interface_set_l2_emulation(self.pg1.sw_if_index) + self.vapi.sw_interface_set_l2_emulation(sub_if_on_pg2.sw_if_index) + self.vapi.sw_interface_set_l2_emulation(sub_if_on_pg3.sw_if_index) + + # + # now we expect the packet forward according to the DVR route + # + rx = self.send_and_expect(self.pg0, pkt_no_tag * 65, self.pg1) + self.assert_same_mac_addr(pkt_no_tag, rx) + self.assert_has_no_tag(rx) + + rx = self.send_and_expect(self.pg0, pkt_to_tag * 65, self.pg2) + self.assert_same_mac_addr(pkt_to_tag, rx) + self.assert_has_vlan_tag(92, rx) + + rx = self.send_and_expect(self.pg3, pkt_from_tag * 65, self.pg1) + self.assert_same_mac_addr(pkt_from_tag, rx) + self.assert_has_no_tag(rx) + + rx = self.send_and_expect(self.pg3, pkt_from_to_tag * 65, self.pg2) + self.assert_same_mac_addr(pkt_from_tag, rx) + self.assert_has_vlan_tag(92, rx) + + # + # but broadcast packets are still flooded + # + self.send_and_expect(self.pg0, pkt_bcast * 33, self.pg2) + + # + # cleanup + # + self.vapi.sw_interface_set_l2_emulation(self.pg0.sw_if_index, + enable=0) + self.vapi.sw_interface_set_l2_emulation(self.pg1.sw_if_index, + enable=0) + self.vapi.sw_interface_set_l2_emulation(sub_if_on_pg2.sw_if_index, + enable=0) + self.vapi.sw_interface_set_l2_emulation(sub_if_on_pg3.sw_if_index, + enable=0) + + self.vapi.sw_interface_set_l2_bridge(self.pg0.sw_if_index, + 1, enable=0) + self.vapi.sw_interface_set_l2_bridge(self.pg1.sw_if_index, + 1, enable=0) + self.vapi.sw_interface_set_l2_bridge(sub_if_on_pg2.sw_if_index, + 1, enable=0) + self.vapi.sw_interface_set_l2_bridge(sub_if_on_pg3.sw_if_index, + 1, enable=0) + + route_1.remove_vpp_config() + route_2.remove_vpp_config() + sub_if_on_pg3.remove_vpp_config() + sub_if_on_pg2.remove_vpp_config() - self.assertEqual(rx[0][Ether].dst, pkt_tag_to_tag[Ether].dst) - self.assertEqual(rx[0][Ether].src, pkt_tag_to_tag[Ether].src) - self.assertFalse(rx[0].haslayer(Dot1Q)) if __name__ == '__main__': unittest.main(testRunner=VppTestRunner) |