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authorNeale Ranns <nranns@cisco.com>2019-05-22 13:26:39 +0000
committerDamjan Marion <dmarion@me.com>2019-06-05 11:33:12 +0000
commit59fa121f8953f7b07f0cc02149ca28182f959f42 (patch)
tree51249a3bf2da047a791b7446af09f15df91118a6 /test/test_l3xc.py
parente6be702362299566990678f505512b1b74b49112 (diff)
L3 cross connect
- all packets input on interface X are load-balanced over the set of paths provided. Change-Id: Ic27cb88c4cd5d6d3462570632daff7a43d5a652d Signed-off-by: Neale Ranns <nranns@cisco.com>
Diffstat (limited to 'test/test_l3xc.py')
-rw-r--r--test/test_l3xc.py174
1 files changed, 174 insertions, 0 deletions
diff --git a/test/test_l3xc.py b/test/test_l3xc.py
new file mode 100644
index 00000000000..ceb95ce02dd
--- /dev/null
+++ b/test/test_l3xc.py
@@ -0,0 +1,174 @@
+#!/usr/bin/env python
+
+from socket import inet_pton, inet_ntop, AF_INET, AF_INET6
+import unittest
+
+from framework import VppTestCase, VppTestRunner
+from vpp_ip import DpoProto
+from vpp_ip_route import VppIpRoute, VppRoutePath, VppMplsLabel, VppIpTable
+
+from scapy.packet import Raw
+from scapy.layers.l2 import Ether
+from scapy.layers.inet import IP, UDP
+from scapy.layers.inet6 import IPv6
+
+from vpp_object import VppObject
+
+NUM_PKTS = 67
+
+
+def find_l3xc(test, sw_if_index, dump_sw_if_index=None):
+ if not dump_sw_if_index:
+ dump_sw_if_index = sw_if_index
+ xcs = test.vapi.l3xc_dump(dump_sw_if_index)
+ for xc in xcs:
+ if sw_if_index == xc.l3xc.sw_if_index:
+ return True
+ return False
+
+
+class VppL3xc(VppObject):
+
+ def __init__(self, test, intf, paths, is_ip6=False):
+ self._test = test
+ self.intf = intf
+ self.is_ip6 = is_ip6
+ self.paths = paths
+
+ def encode_paths(self):
+ br_paths = []
+ for p in self.paths:
+ lstack = []
+ for l in p.nh_labels:
+ if type(l) == VppMplsLabel:
+ lstack.append(l.encode())
+ else:
+ lstack.append({'label': l, 'ttl': 255})
+ n_labels = len(lstack)
+ while (len(lstack) < 16):
+ lstack.append({})
+ br_paths.append({'next_hop': p.nh_addr,
+ 'weight': 1,
+ 'afi': p.proto,
+ 'sw_if_index': p.nh_itf,
+ 'preference': 0,
+ 'table_id': p.nh_table_id,
+ 'next_hop_id': p.next_hop_id,
+ 'is_udp_encap': p.is_udp_encap,
+ 'n_labels': n_labels,
+ 'label_stack': lstack})
+ return br_paths
+
+ def add_vpp_config(self):
+ self._test.vapi.l3xc_update(
+ l3xc={
+ 'is_ip6': self.is_ip6,
+ 'sw_if_index': self.intf.sw_if_index,
+ 'n_paths': len(self.paths),
+ 'paths': self.encode_paths()
+ })
+ self._test.registry.register(self, self._test.logger)
+
+ def remove_vpp_config(self):
+ self._test.vapi.l3xc_del(
+ is_ip6=self.is_ip6,
+ sw_if_index=self.intf.sw_if_index)
+
+ def query_vpp_config(self):
+ return find_l3xc(self._test, self.intf.sw_if_index)
+
+ def object_id(self):
+ return ("l3xc-%d" % self.intf.sw_if_index)
+
+
+class TestL3xc(VppTestCase):
+ """ L3XC Test Case """
+
+ @classmethod
+ def setUpClass(cls):
+ super(TestL3xc, cls).setUpClass()
+
+ @classmethod
+ def tearDownClass(cls):
+ super(TestL3xc, cls).tearDownClass()
+
+ def setUp(self):
+ super(TestL3xc, self).setUp()
+
+ self.create_pg_interfaces(range(6))
+
+ for i in self.pg_interfaces:
+ i.admin_up()
+ i.config_ip4()
+ i.resolve_arp()
+ i.config_ip6()
+ i.resolve_ndp()
+
+ def tearDown(self):
+ for i in self.pg_interfaces:
+ i.unconfig_ip4()
+ i.unconfig_ip6()
+ i.ip6_disable()
+ i.admin_down()
+ super(TestL3xc, self).tearDown()
+
+ def send_and_expect_load_balancing(self, input, pkts, outputs):
+ self.pg_send(input, pkts)
+ rxs = []
+ for oo in outputs:
+ rx = oo._get_capture(1)
+ self.assertNotEqual(0, len(rx))
+ for r in rx:
+ rxs.append(r)
+ return rxs
+
+ def test_l3xc4(self):
+ """ IPv4 X-Connect """
+
+ #
+ # x-connect pg0 to pg1 and pg2 to pg3->5
+ #
+ l3xc_1 = VppL3xc(self, self.pg0,
+ [VppRoutePath(self.pg1.remote_ip4,
+ self.pg1.sw_if_index)])
+ l3xc_1.add_vpp_config()
+ l3xc_2 = VppL3xc(self, self.pg2,
+ [VppRoutePath(self.pg3.remote_ip4,
+ self.pg3.sw_if_index),
+ VppRoutePath(self.pg4.remote_ip4,
+ self.pg4.sw_if_index),
+ VppRoutePath(self.pg5.remote_ip4,
+ self.pg5.sw_if_index)])
+ l3xc_2.add_vpp_config()
+
+ self.assertTrue(find_l3xc(self, self.pg2.sw_if_index, 0xffffffff))
+
+ self.logger.info(self.vapi.cli("sh l3xc"))
+
+ #
+ # fire in packets. If it's forwarded then the L3XC was successful,
+ # since default routing will drop it
+ #
+ p_1 = (Ether(src=self.pg0.remote_mac,
+ dst=self.pg0.local_mac) /
+ IP(src="1.1.1.1", dst="1.1.1.2") /
+ UDP(sport=1234, dport=1234) /
+ Raw('\xa5' * 100))
+ # self.send_and_expect(self.pg0, p_1*NUM_PKTS, self.pg1)
+
+ p_2 = []
+ for ii in range(NUM_PKTS):
+ p_2.append(Ether(src=self.pg0.remote_mac,
+ dst=self.pg0.local_mac) /
+ IP(src="1.1.1.1", dst="1.1.1.2") /
+ UDP(sport=1000 + ii, dport=1234) /
+ Raw('\xa5' * 100))
+ self.send_and_expect_load_balancing(self.pg2, p_2,
+ [self.pg3, self.pg4, self.pg5])
+
+ l3xc_2.remove_vpp_config()
+ self.send_and_assert_no_replies(self.pg2, p_2)
+
+
+if __name__ == '__main__':
+ unittest.main(testRunner=VppTestRunner)