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authorNeale Ranns <nranns@cisco.com>2020-09-18 07:35:06 +0000
committerOle Tr�an <otroan@employees.org>2020-09-21 17:04:13 +0000
commit3a6adc52fe4cad83883c00ad47aefdfb995fb441 (patch)
treeedea9964987a211545d538c8641696a02e4aa3ad /src/plugins/geneve/test/test_geneve.py
parent6810a77da36c6750938800314c15e840ee2a8c93 (diff)
geneve: Move to plugin
Type: refactor Change-Id: I613bf4d6517591351b212bfe6c8d93abf235f5dc Signed-off-by: Neale Ranns <nranns@cisco.com>
Diffstat (limited to 'src/plugins/geneve/test/test_geneve.py')
-rw-r--r--src/plugins/geneve/test/test_geneve.py307
1 files changed, 307 insertions, 0 deletions
diff --git a/src/plugins/geneve/test/test_geneve.py b/src/plugins/geneve/test/test_geneve.py
new file mode 100644
index 00000000000..9ce1f8ff643
--- /dev/null
+++ b/src/plugins/geneve/test/test_geneve.py
@@ -0,0 +1,307 @@
+#!/usr/bin/env python3
+
+import socket
+from util import ip4_range
+import unittest
+from framework import VppTestCase, VppTestRunner
+from template_bd import BridgeDomain
+
+from scapy.layers.l2 import Ether, ARP
+from scapy.layers.inet import IP, UDP, ICMP
+from scapy.contrib.geneve import GENEVE
+
+import util
+from vpp_ip_route import VppIpRoute, VppRoutePath
+from vpp_ip import INVALID_INDEX
+
+
+class TestGeneve(BridgeDomain, VppTestCase):
+ """ GENEVE Test Case """
+
+ def __init__(self, *args):
+ BridgeDomain.__init__(self)
+ VppTestCase.__init__(self, *args)
+
+ def encapsulate(self, pkt, vni):
+
+ """
+ Encapsulate the original payload frame by adding GENEVE header with its
+ UDP, IP and Ethernet fields
+ """
+ return (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
+ UDP(sport=self.dport, dport=self.dport, chksum=0) /
+ GENEVE(vni=vni) /
+ pkt)
+
+ def ip_range(self, start, end):
+ """ range of remote ip's """
+ return ip4_range(self.pg0.remote_ip4, start, end)
+
+ def encap_mcast(self, pkt, src_ip, src_mac, vni):
+ """
+ Encapsulate the original payload frame by adding GENEVE header with its
+ UDP, IP and Ethernet fields
+ """
+ return (Ether(src=src_mac, dst=self.mcast_mac) /
+ IP(src=src_ip, dst=self.mcast_ip4) /
+ UDP(sport=self.dport, dport=self.dport, chksum=0) /
+ GENEVE(vni=vni) /
+ pkt)
+
+ def decapsulate(self, pkt):
+ """
+ Decapsulate the original payload frame by removing GENEVE header
+ """
+ # check if is set I flag
+ # self.assertEqual(pkt[GENEVE].flags, int('0x8', 16))
+ return pkt[GENEVE].payload
+
+ # Method for checking GENEVE encapsulation.
+ #
+ def check_encapsulation(self, pkt, vni, local_only=False, mcast_pkt=False):
+ # TODO: add error messages
+ # Verify source MAC is VPP_MAC and destination MAC is MY_MAC resolved
+ # by VPP using ARP.
+ self.assertEqual(pkt[Ether].src, self.pg0.local_mac)
+ if not local_only:
+ if not mcast_pkt:
+ self.assertEqual(pkt[Ether].dst, self.pg0.remote_mac)
+ else:
+ self.assertEqual(pkt[Ether].dst, type(self).mcast_mac)
+ # Verify GENEVE tunnel source IP is VPP_IP and destination IP is MY_IP.
+ self.assertEqual(pkt[IP].src, self.pg0.local_ip4)
+ if not local_only:
+ if not mcast_pkt:
+ self.assertEqual(pkt[IP].dst, self.pg0.remote_ip4)
+ else:
+ self.assertEqual(pkt[IP].dst, type(self).mcast_ip4)
+ # Verify UDP destination port is GENEVE 4789, source UDP port could be
+ # arbitrary.
+ self.assertEqual(pkt[UDP].dport, type(self).dport)
+ # TODO: checksum check
+ # Verify VNI
+ self.assertEqual(pkt[GENEVE].vni, vni)
+
+ @classmethod
+ def create_geneve_flood_test_bd(cls, vni, n_ucast_tunnels):
+ # Create 10 ucast geneve tunnels under bd
+ ip_range_start = 10
+ ip_range_end = ip_range_start + n_ucast_tunnels
+ next_hop_address = cls.pg0.remote_ip4
+ for dest_ip4 in ip4_range(next_hop_address, ip_range_start,
+ ip_range_end):
+ # add host route so dest_ip4 will not be resolved
+ rip = VppIpRoute(cls, dest_ip4, 32,
+ [VppRoutePath(next_hop_address,
+ INVALID_INDEX)],
+ register=False)
+ rip.add_vpp_config()
+ r = cls.vapi.geneve_add_del_tunnel(
+ local_address=cls.pg0.local_ip4, remote_address=dest_ip4,
+ vni=vni)
+ cls.vapi.sw_interface_set_l2_bridge(rx_sw_if_index=r.sw_if_index,
+ bd_id=vni)
+
+ @classmethod
+ def add_del_shared_mcast_dst_load(cls, is_add):
+ """
+ add or del tunnels sharing the same mcast dst
+ to test geneve ref_count mechanism
+ """
+ n_shared_dst_tunnels = 10
+ vni_start = 10000
+ vni_end = vni_start + n_shared_dst_tunnels
+ for vni in range(vni_start, vni_end):
+ r = cls.vapi.geneve_add_del_tunnel(
+ local_address=cls.pg0.local_ip4,
+ remote_address=cls.mcast_ip4, mcast_sw_if_index=1,
+ is_add=is_add, vni=vni)
+ if r.sw_if_index == 0xffffffff:
+ raise ValueError("bad sw_if_index: ~0")
+
+ @classmethod
+ def add_shared_mcast_dst_load(cls):
+ cls.add_del_shared_mcast_dst_load(is_add=1)
+
+ @classmethod
+ def del_shared_mcast_dst_load(cls):
+ cls.add_del_shared_mcast_dst_load(is_add=0)
+
+ @classmethod
+ def add_del_mcast_tunnels_load(cls, is_add):
+ """
+ add or del tunnels to test geneve stability
+ """
+ n_distinct_dst_tunnels = 10
+ ip_range_start = 10
+ ip_range_end = ip_range_start + n_distinct_dst_tunnels
+ for dest_ip4 in ip4_range(cls.mcast_ip4, ip_range_start,
+ ip_range_end):
+ vni = int(dest_ip4.split('.')[3])
+ cls.vapi.geneve_add_del_tunnel(local_address=cls.pg0.local_ip4,
+ remote_address=dest_ip4,
+ mcast_sw_if_index=1, is_add=is_add,
+ vni=vni)
+
+ @classmethod
+ def add_mcast_tunnels_load(cls):
+ cls.add_del_mcast_tunnels_load(is_add=1)
+
+ @classmethod
+ def del_mcast_tunnels_load(cls):
+ cls.add_del_mcast_tunnels_load(is_add=0)
+
+ # Class method to start the GENEVE test case.
+ # Overrides setUpClass method in VppTestCase class.
+ # Python try..except statement is used to ensure that the tear down of
+ # the class will be executed even if exception is raised.
+ # @param cls The class pointer.
+ @classmethod
+ def setUpClass(cls):
+ super(TestGeneve, cls).setUpClass()
+
+ try:
+ cls.dport = 6081
+
+ # Create 2 pg interfaces.
+ cls.create_pg_interfaces(range(4))
+ for pg in cls.pg_interfaces:
+ pg.admin_up()
+
+ # Configure IPv4 addresses on VPP pg0.
+ cls.pg0.config_ip4()
+
+ # Resolve MAC address for VPP's IP address on pg0.
+ cls.pg0.resolve_arp()
+
+ # Our Multicast address
+ cls.mcast_ip4 = '239.1.1.1'
+ cls.mcast_mac = util.mcast_ip_to_mac(cls.mcast_ip4)
+
+ # Create GENEVE VTEP on VPP pg0, and put geneve_tunnel0 and pg1
+ # into BD.
+ cls.single_tunnel_vni = 0xabcde
+ cls.single_tunnel_bd = 1
+ r = cls.vapi.geneve_add_del_tunnel(
+ local_address=cls.pg0.local_ip4,
+ remote_address=cls.pg0.remote_ip4, vni=cls.single_tunnel_vni)
+ cls.vapi.sw_interface_set_l2_bridge(rx_sw_if_index=r.sw_if_index,
+ bd_id=cls.single_tunnel_bd)
+ cls.vapi.sw_interface_set_l2_bridge(
+ rx_sw_if_index=cls.pg1.sw_if_index, bd_id=cls.single_tunnel_bd)
+
+ # Setup vni 2 to test multicast flooding
+ cls.n_ucast_tunnels = 10
+ cls.mcast_flood_bd = 2
+ cls.create_geneve_flood_test_bd(cls.mcast_flood_bd,
+ cls.n_ucast_tunnels)
+ r = cls.vapi.geneve_add_del_tunnel(
+ local_address=cls.pg0.local_ip4,
+ remote_address=cls.mcast_ip4, mcast_sw_if_index=1,
+ vni=cls.mcast_flood_bd)
+ cls.vapi.sw_interface_set_l2_bridge(rx_sw_if_index=r.sw_if_index,
+ bd_id=cls.mcast_flood_bd)
+ cls.vapi.sw_interface_set_l2_bridge(
+ rx_sw_if_index=cls.pg2.sw_if_index, bd_id=cls.mcast_flood_bd)
+
+ # Add and delete mcast tunnels to check stability
+ cls.add_shared_mcast_dst_load()
+ cls.add_mcast_tunnels_load()
+ cls.del_shared_mcast_dst_load()
+ cls.del_mcast_tunnels_load()
+
+ # Setup vni 3 to test unicast flooding
+ cls.ucast_flood_bd = 3
+ cls.create_geneve_flood_test_bd(cls.ucast_flood_bd,
+ cls.n_ucast_tunnels)
+ cls.vapi.sw_interface_set_l2_bridge(
+ rx_sw_if_index=cls.pg3.sw_if_index, bd_id=cls.ucast_flood_bd)
+ except Exception:
+ super(TestGeneve, cls).tearDownClass()
+ raise
+
+ # Method to define VPP actions before tear down of the test case.
+ # Overrides tearDown method in VppTestCase class.
+ # @param self The object pointer.
+ def tearDown(self):
+ super(TestGeneve, self).tearDown()
+
+ def show_commands_at_teardown(self):
+ self.logger.info(self.vapi.cli("show bridge-domain 1 detail"))
+ self.logger.info(self.vapi.cli("show bridge-domain 2 detail"))
+ self.logger.info(self.vapi.cli("show bridge-domain 3 detail"))
+ self.logger.info(self.vapi.cli("show geneve tunnel"))
+
+
+class TestGeneveL3(VppTestCase):
+ """ GENEVE L3 Test Case """
+
+ @classmethod
+ def setUpClass(cls):
+ super(TestGeneveL3, cls).setUpClass()
+ try:
+ cls.create_pg_interfaces(range(2))
+ cls.interfaces = list(cls.pg_interfaces)
+
+ for i in cls.interfaces:
+ i.admin_up()
+ i.config_ip4()
+ i.resolve_arp()
+ except Exception:
+ super(TestGeneveL3, cls).tearDownClass()
+ raise
+
+ @classmethod
+ def tearDownClass(cls):
+ super(TestGeneveL3, cls).tearDownClass()
+
+ def tearDown(self):
+ super(TestGeneveL3, self).tearDown()
+
+ def show_commands_at_teardown(self):
+ self.logger.info(self.vapi.cli("show geneve tunnel"))
+ self.logger.info(self.vapi.cli("show ip neighbor"))
+
+ def test_l3_packet(self):
+ vni = 1234
+ r = self.vapi.add_node_next(node_name="geneve4-input",
+ next_name="ethernet-input")
+ r = self.vapi.geneve_add_del_tunnel2(
+ is_add=1,
+ local_address=self.pg0.local_ip4,
+ remote_address=self.pg0.remote_ip4,
+ vni=vni,
+ l3_mode=1,
+ decap_next_index=r.next_index)
+
+ self.vapi.sw_interface_add_del_address(
+ sw_if_index=r.sw_if_index, prefix="10.0.0.1/24")
+
+ pkt = (Ether(src=self.pg0.remote_mac, dst="d0:0b:ee:d0:00:00") /
+ IP(src='10.0.0.2', dst='10.0.0.1') /
+ ICMP())
+
+ encap = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
+ UDP(sport=6081, dport=6081, chksum=0) /
+ GENEVE(vni=vni))
+
+ arp = (Ether(src=self.pg0.remote_mac, dst="d0:0b:ee:d0:00:00") /
+ ARP(op="is-at", hwsrc=self.pg0.remote_mac,
+ hwdst="d0:0b:ee:d0:00:00", psrc="10.0.0.2",
+ pdst="10.0.0.1"))
+
+ rx = self.send_and_expect(self.pg0, encap/pkt*1, self.pg0)
+ rx = self.send_and_assert_no_replies(self.pg0, encap/arp*1, self.pg0)
+ rx = self.send_and_expect(self.pg0, encap/pkt*1, self.pg0)
+ self.assertEqual(rx[0][ICMP].type, 0) # echo reply
+
+ r = self.vapi.geneve_add_del_tunnel2(
+ is_add=0,
+ local_address=self.pg0.local_ip4,
+ remote_address=self.pg0.remote_ip4,
+ vni=vni)
+
+if __name__ == '__main__':
+ unittest.main(testRunner=VppTestRunner)