#!/usr/bin/env python
-import random
-import socket
import unittest
from framework import VppTestCase, VppTestRunner
-from vpp_sub_interface import VppSubInterface, VppDot1QSubint
-from vpp_ip_route import VppIpRoute, VppRoutePath, DpoProto
-from vpp_papi_provider import L2_VTR_OP
+from vpp_sub_interface import VppDot1QSubint
+from vpp_ip_route import VppIpRoute, VppRoutePath
+from vpp_papi_provider import L2_VTR_OP, L2_PORT_TYPE
from scapy.packet import Raw
-from scapy.layers.l2 import Ether, Dot1Q, ARP
+from scapy.layers.l2 import Ether, Dot1Q
from scapy.layers.inet import IP, UDP
-from util import ppp
+from socket import AF_INET, inet_pton
class TestDVR(VppTestCase):
super(TestDVR, self).setUp()
self.create_pg_interfaces(range(4))
- self.create_loopback_interfaces(range(1))
+ self.create_loopback_interfaces(1)
for i in self.pg_interfaces:
i.admin_up()
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 """
#
# 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_bridge(self.loop0.sw_if_index, 1, bvi=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)
+ 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
self, ip_non_tag_bridged, 32,
[VppRoutePath("0.0.0.0",
self.pg1.sw_if_index,
- proto=DpoProto.DPO_PROTO_ETHERNET)])
+ is_dvr=1)])
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.
#
- self.pg0.add_stream(pkt_no_tag)
-
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
-
- rx = self.pg1.get_capture(1)
-
- self.assertEqual(rx[0][Ether].dst, pkt_no_tag[Ether].dst)
- self.assertEqual(rx[0][Ether].src, pkt_no_tag[Ether].src)
+ 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)
#
# 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()
+ is_dvr=1)])
+ 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.
+ # Inject the packet that arrives non-tag and leaves on a tagged
+ # interface
#
- 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
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
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)
+
+ #
+ # Add an output L3 ACL that will block the traffic
+ #
+ rule_1 = ({'is_permit': 0,
+ 'is_ipv6': 0,
+ 'proto': 17,
+ 'srcport_or_icmptype_first': 1234,
+ 'srcport_or_icmptype_last': 1234,
+ 'src_ip_prefix_len': 32,
+ 'src_ip_addr': inet_pton(AF_INET, any_src_addr),
+ 'dstport_or_icmpcode_first': 1234,
+ 'dstport_or_icmpcode_last': 1234,
+ 'dst_ip_prefix_len': 32,
+ 'dst_ip_addr': inet_pton(AF_INET, ip_non_tag_bridged)})
+ acl = self.vapi.acl_add_replace(acl_index=4294967295,
+ r=[rule_1])
+
+ #
+ # Apply the ACL on the output interface
+ #
+ self.vapi.acl_interface_set_acl_list(self.pg1.sw_if_index,
+ 0,
+ [acl.acl_index])
+
+ #
+ # 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 * 65)
+
+ #
+ # cleanup
+ #
+ self.vapi.acl_interface_set_acl_list(self.pg1.sw_if_index,
+ 0, [])
+ self.vapi.acl_del(acl.acl_index)
+
+ 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_fib_dump()
+
+ for r in routes:
+ if (inet_pton(AF_INET, ip_tag_bridged) == r.address):
+ self.assertEqual(r.path[0].sw_if_index,
+ sub_if_on_pg3.sw_if_index)
+ self.assertEqual(r.path[0].is_dvr, 1)
+ if (inet_pton(AF_INET, ip_non_tag_bridged) == r.address):
+ self.assertEqual(r.path[0].sw_if_index,
+ self.pg1.sw_if_index)
+ self.assertEqual(r.path[0].is_dvr, 1)
+
+ #
+ # 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(
+ 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,
+ is_dvr=1)])
+ route_2 = VppIpRoute(self, "1.1.1.2", 32,
+ [VppRoutePath("0.0.0.0",
+ sub_if_on_pg2.sw_if_index,
+ is_dvr=1)])
+ 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 * 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.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()
- 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)
Code Review / vpp.git / blobdiff