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authorDave Wallace <dwallacelf@gmail.com>2021-05-12 21:43:59 -0400
committerDamjan Marion <dmarion@me.com>2021-05-13 09:33:06 +0000
commiteddd8e3588561039985b27edf059db6033bfdfab (patch)
tree44896887d6070853ea77a18cae218f5d4ef4d93a /test/test_dvr.py
parentfd77f8c00c8e9d528d91a9cefae1878e383582ed (diff)
tests: move test source to vpp/test
- Generate copyright year and version instead of using hard-coded data Type: refactor Signed-off-by: Dave Wallace <dwallacelf@gmail.com> Change-Id: I6058f5025323b3aa483f5df4a2c4371e27b5914e
Diffstat (limited to 'test/test_dvr.py')
-rw-r--r--test/test_dvr.py410
1 files changed, 410 insertions, 0 deletions
diff --git a/test/test_dvr.py b/test/test_dvr.py
new file mode 100644
index 00000000000..8531b8553ca
--- /dev/null
+++ b/test/test_dvr.py
@@ -0,0 +1,410 @@
+#!/usr/bin/env python3
+import unittest
+
+from framework import VppTestCase, VppTestRunner
+from vpp_ip_route import VppIpRoute, VppRoutePath, FibPathType
+from vpp_l2 import L2_PORT_TYPE
+from vpp_sub_interface import L2_VTR_OP, VppDot1QSubint
+from vpp_acl import AclRule, VppAcl, VppAclInterface
+
+from scapy.packet import Raw
+from scapy.layers.l2 import Ether, Dot1Q
+from scapy.layers.inet import IP, UDP
+from socket import AF_INET, inet_pton
+from ipaddress import IPv4Network
+
+NUM_PKTS = 67
+
+
+class TestDVR(VppTestCase):
+ """ Distributed Virtual Router """
+
+ @classmethod
+ def setUpClass(cls):
+ super(TestDVR, cls).setUpClass()
+
+ @classmethod
+ def tearDownClass(cls):
+ super(TestDVR, cls).tearDownClass()
+
+ def setUp(self):
+ super(TestDVR, self).setUp()
+
+ self.create_pg_interfaces(range(4))
+ self.create_loopback_interfaces(1)
+
+ for i in self.pg_interfaces:
+ i.admin_up()
+
+ self.loop0.config_ip4()
+
+ def tearDown(self):
+ for i in self.pg_interfaces:
+ i.admin_down()
+ self.loop0.unconfig_ip4()
+
+ super(TestDVR, self).tearDown()
+
+ 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 """
+
+ #
+ # A packet destined to an IP address that is L2 bridged via
+ # a non-tag interface
+ #
+ ip_non_tag_bridged = "10.10.10.10"
+ ip_tag_bridged = "10.10.10.11"
+ any_src_addr = "1.1.1.1"
+
+ pkt_no_tag = (Ether(src=self.pg0.remote_mac,
+ dst=self.loop0.local_mac) /
+ IP(src=any_src_addr,
+ dst=ip_non_tag_bridged) /
+ UDP(sport=1234, dport=1234) /
+ Raw(b'\xa5' * 100))
+ pkt_tag = (Ether(src=self.pg0.remote_mac,
+ dst=self.loop0.local_mac) /
+ IP(src=any_src_addr,
+ dst=ip_tag_bridged) /
+ UDP(sport=1234, dport=1234) /
+ Raw(b'\xa5' * 100))
+
+ #
+ # Two sub-interfaces so we can test VLAN tag push/pop
+ #
+ 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(
+ rx_sw_if_index=self.pg0.sw_if_index, bd_id=1)
+ self.vapi.sw_interface_set_l2_bridge(
+ rx_sw_if_index=self.pg1.sw_if_index, bd_id=1)
+ self.vapi.sw_interface_set_l2_bridge(
+ rx_sw_if_index=sub_if_on_pg2.sw_if_index, bd_id=1)
+ self.vapi.sw_interface_set_l2_bridge(
+ rx_sw_if_index=sub_if_on_pg3.sw_if_index, bd_id=1)
+ self.vapi.sw_interface_set_l2_bridge(
+ rx_sw_if_index=self.loop0.sw_if_index, bd_id=1,
+ port_type=L2_PORT_TYPE.BVI)
+
+ self.vapi.l2_interface_vlan_tag_rewrite(
+ sw_if_index=sub_if_on_pg2.sw_if_index, vtr_op=L2_VTR_OP.L2_POP_1,
+ push_dot1q=92)
+ self.vapi.l2_interface_vlan_tag_rewrite(
+ sw_if_index=sub_if_on_pg3.sw_if_index, vtr_op=L2_VTR_OP.L2_POP_1,
+ push_dot1q=93)
+
+ #
+ # Add routes to bridge the traffic via a tagged an nontagged interface
+ #
+ route_no_tag = VppIpRoute(
+ self, ip_non_tag_bridged, 32,
+ [VppRoutePath("0.0.0.0",
+ self.pg1.sw_if_index,
+ type=FibPathType.FIB_PATH_TYPE_DVR)])
+ route_no_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.
+ #
+ rx = self.send_and_expect(self.pg0, pkt_no_tag * NUM_PKTS, self.pg1)
+ self.assert_same_mac_addr(pkt_no_tag, rx)
+ self.assert_has_no_tag(rx)
+
+ #
+ # Add routes to bridge the traffic via a tagged interface
+ #
+ route_with_tag = VppIpRoute(
+ self, ip_tag_bridged, 32,
+ [VppRoutePath("0.0.0.0",
+ sub_if_on_pg3.sw_if_index,
+ type=FibPathType.FIB_PATH_TYPE_DVR)])
+ route_with_tag.add_vpp_config()
+
+ #
+ # Inject the packet that arrives non-tag and leaves on a tagged
+ # interface
+ #
+ rx = self.send_and_expect(self.pg0, pkt_tag * NUM_PKTS, self.pg3)
+ self.assert_same_mac_addr(pkt_tag, rx)
+ self.assert_has_vlan_tag(93, rx)
+
+ #
+ # Tag to tag
+ #
+ pkt_tag_to_tag = (Ether(src=self.pg2.remote_mac,
+ dst=self.loop0.local_mac) /
+ Dot1Q(vlan=92) /
+ IP(src=any_src_addr,
+ dst=ip_tag_bridged) /
+ UDP(sport=1234, dport=1234) /
+ Raw(b'\xa5' * 100))
+
+ rx = self.send_and_expect(self.pg2,
+ pkt_tag_to_tag * NUM_PKTS,
+ self.pg3)
+ self.assert_same_mac_addr(pkt_tag_to_tag, rx)
+ self.assert_has_vlan_tag(93, rx)
+
+ #
+ # Tag to non-Tag
+ #
+ pkt_tag_to_non_tag = (Ether(src=self.pg2.remote_mac,
+ dst=self.loop0.local_mac) /
+ Dot1Q(vlan=92) /
+ IP(src=any_src_addr,
+ dst=ip_non_tag_bridged) /
+ UDP(sport=1234, dport=1234) /
+ Raw(b'\xa5' * 100))
+
+ rx = self.send_and_expect(self.pg2,
+ pkt_tag_to_non_tag * NUM_PKTS,
+ self.pg1)
+ self.assert_same_mac_addr(pkt_tag_to_tag, rx)
+ self.assert_has_no_tag(rx)
+
+ #
+ # Add an output L3 ACL that will block the traffic
+ #
+ rule_1 = AclRule(is_permit=0, proto=17, ports=1234,
+ src_prefix=IPv4Network((any_src_addr, 32)),
+ dst_prefix=IPv4Network((ip_non_tag_bridged, 32)))
+ acl = VppAcl(self, rules=[rule_1])
+ acl.add_vpp_config()
+
+ #
+ # Apply the ACL on the output interface
+ #
+ acl_if1 = VppAclInterface(self, sw_if_index=self.pg1.sw_if_index,
+ n_input=0, acls=[acl])
+ acl_if1.add_vpp_config()
+
+ #
+ # Send packet's that should match the ACL and be dropped
+ #
+ rx = self.send_and_assert_no_replies(self.pg2,
+ pkt_tag_to_non_tag * NUM_PKTS)
+
+ #
+ # cleanup
+ #
+ acl_if1.remove_vpp_config()
+ acl.remove_vpp_config()
+
+ self.vapi.sw_interface_set_l2_bridge(
+ rx_sw_if_index=self.pg0.sw_if_index, bd_id=1, enable=0)
+ self.vapi.sw_interface_set_l2_bridge(
+ rx_sw_if_index=self.pg1.sw_if_index, bd_id=1, enable=0)
+ self.vapi.sw_interface_set_l2_bridge(
+ rx_sw_if_index=sub_if_on_pg2.sw_if_index, bd_id=1, enable=0)
+ self.vapi.sw_interface_set_l2_bridge(
+ rx_sw_if_index=sub_if_on_pg3.sw_if_index, bd_id=1, enable=0)
+ self.vapi.sw_interface_set_l2_bridge(
+ rx_sw_if_index=self.loop0.sw_if_index, bd_id=1,
+ port_type=L2_PORT_TYPE.BVI, enable=0)
+
+ #
+ # Do a FIB dump to make sure the paths are correctly reported as DVR
+ #
+ routes = self.vapi.ip_route_dump(0)
+
+ for r in routes:
+ if (ip_tag_bridged == str(r.route.prefix.network_address)):
+ self.assertEqual(r.route.paths[0].sw_if_index,
+ sub_if_on_pg3.sw_if_index)
+ self.assertEqual(r.route.paths[0].type,
+ FibPathType.FIB_PATH_TYPE_DVR)
+ if (ip_non_tag_bridged == str(r.route.prefix.network_address)):
+ self.assertEqual(r.route.paths[0].sw_if_index,
+ self.pg1.sw_if_index)
+ self.assertEqual(r.route.paths[0].type,
+ FibPathType.FIB_PATH_TYPE_DVR)
+
+ #
+ # 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(b'\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(b'\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(b'\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(b'\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(b'\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(
+ rx_sw_if_index=self.pg0.sw_if_index, bd_id=1)
+ self.vapi.sw_interface_set_l2_bridge(
+ rx_sw_if_index=self.pg1.sw_if_index, bd_id=1)
+ self.vapi.sw_interface_set_l2_bridge(
+ rx_sw_if_index=sub_if_on_pg2.sw_if_index, bd_id=1)
+ self.vapi.sw_interface_set_l2_bridge(
+ rx_sw_if_index=sub_if_on_pg3.sw_if_index, bd_id=1)
+ self.vapi.l2_interface_vlan_tag_rewrite(
+ sw_if_index=sub_if_on_pg2.sw_if_index, vtr_op=L2_VTR_OP.L2_POP_1,
+ push_dot1q=92)
+ self.vapi.l2_interface_vlan_tag_rewrite(
+ sw_if_index=sub_if_on_pg3.sw_if_index, vtr_op=L2_VTR_OP.L2_POP_1,
+ push_dot1q=93)
+
+ #
+ # Disable UU flooding, learning and ARP termination. makes this test
+ # easier as unicast packets are dropped if not extracted.
+ #
+ self.vapi.bridge_flags(bd_id=1, is_set=0,
+ flags=(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,
+ type=FibPathType.FIB_PATH_TYPE_DVR)])
+ route_2 = VppIpRoute(
+ self, "1.1.1.2", 32,
+ [VppRoutePath("0.0.0.0",
+ sub_if_on_pg2.sw_if_index,
+ type=FibPathType.FIB_PATH_TYPE_DVR)])
+ route_1.add_vpp_config()
+ route_2.add_vpp_config()
+
+ #
+ # packets are dropped because bridge does not flood unknown unicast
+ #
+ self.send_and_assert_no_replies(self.pg0, pkt_no_tag)
+
+ #
+ # Enable L3 extraction on pgs
+ #
+ self.vapi.l2_emulation(self.pg0.sw_if_index)
+ self.vapi.l2_emulation(self.pg1.sw_if_index)
+ self.vapi.l2_emulation(sub_if_on_pg2.sw_if_index)
+ self.vapi.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 * NUM_PKTS, 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 * NUM_PKTS, 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 * NUM_PKTS, 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 * NUM_PKTS,
+ 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.l2_emulation(self.pg0.sw_if_index,
+ enable=0)
+ self.vapi.l2_emulation(self.pg1.sw_if_index,
+ enable=0)
+ self.vapi.l2_emulation(sub_if_on_pg2.sw_if_index,
+ enable=0)
+ self.vapi.l2_emulation(sub_if_on_pg3.sw_if_index,
+ enable=0)
+
+ self.vapi.sw_interface_set_l2_bridge(
+ rx_sw_if_index=self.pg0.sw_if_index, bd_id=1, enable=0)
+ self.vapi.sw_interface_set_l2_bridge(
+ rx_sw_if_index=self.pg1.sw_if_index, bd_id=1, enable=0)
+ self.vapi.sw_interface_set_l2_bridge(
+ rx_sw_if_index=sub_if_on_pg2.sw_if_index, bd_id=1, enable=0)
+ self.vapi.sw_interface_set_l2_bridge(
+ rx_sw_if_index=sub_if_on_pg3.sw_if_index, bd_id=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()
+
+
+if __name__ == '__main__':
+ unittest.main(testRunner=VppTestRunner)