X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=test%2Ftest_vxlan.py;h=3c824b5761a9c530af86537df8fa5edaade7362b;hb=13a08cc;hp=9dccaf50fb1702ad4ae5e03bbb85732608ede94a;hpb=d81da8c0b5094de6635ad9575a2a2bb6f44070dc;p=vpp.git diff --git a/test/test_vxlan.py b/test/test_vxlan.py index 9dccaf50fb1..3c824b5761a 100644 --- a/test/test_vxlan.py +++ b/test/test_vxlan.py @@ -1,16 +1,32 @@ #!/usr/bin/env python import socket -from util import ip4n_range +from util import ip4n_range, ip4_range import unittest from framework import VppTestCase, VppTestRunner from template_bd import BridgeDomain -from scapy.layers.l2 import Ether +from scapy.layers.l2 import Ether, Raw from scapy.layers.inet import IP, UDP from scapy.layers.vxlan import VXLAN from scapy.utils import atol +import StringIO + + +def reassemble(listoffragments): + buffer = StringIO.StringIO() + first = listoffragments[0] + buffer.seek(20) + for pkt in listoffragments: + buffer.seek(pkt[IP].frag*8) + buffer.write(pkt[IP].payload) + first.len = len(buffer.getvalue()) + 20 + first.flags = 0 + del(first.chksum) + header = str(first[IP])[:20] + return first[IP].__class__(header + buffer.getvalue()) + class TestVxlan(BridgeDomain, VppTestCase): """ VXLAN Test Case """ @@ -30,6 +46,10 @@ class TestVxlan(BridgeDomain, VppTestCase): VXLAN(vni=vni, flags=self.flags) / 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 VXLAN header with its @@ -51,17 +71,23 @@ class TestVxlan(BridgeDomain, VppTestCase): # Method for checking VXLAN encapsulation. # - def check_encapsulation(self, pkt, vni, local_only=False): + 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: - self.assertEqual(pkt[Ether].dst, self.pg0.remote_mac) + if not mcast_pkt: + self.assertEqual(pkt[Ether].dst, self.pg0.remote_mac) + else: + self.assertEqual(pkt[Ether].dst, type(self).mcast_mac) # Verify VXLAN 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: - self.assertEqual(pkt[IP].dst, self.pg0.remote_ip4) + 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 VXLAN 4789, source UDP port could be # arbitrary. self.assertEqual(pkt[UDP].dport, type(self).dport) @@ -86,9 +112,40 @@ class TestVxlan(BridgeDomain, VppTestCase): cls.vapi.sw_interface_set_l2_bridge(r.sw_if_index, bd_id=vni) @classmethod - def add_del_mcast_load(cls, is_add): + def add_del_shared_mcast_dst_load(cls, is_add): + """ + add or del tunnels sharing the same mcast dst + to test vxlan ref_count mechanism + """ + n_shared_dst_tunnels = 20 + vni_start = 10000 + vni_end = vni_start + n_shared_dst_tunnels + for vni in range(vni_start, vni_end): + r = cls.vapi.vxlan_add_del_tunnel( + src_addr=cls.pg0.local_ip4n, + dst_addr=cls.mcast_ip4n, + mcast_sw_if_index=1, + vni=vni, + is_add=is_add) + if r.sw_if_index == 0xffffffff: + raise "bad sw_if_index" + + @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 vxlan stability + """ + n_distinct_dst_tunnels = 200 ip_range_start = 10 - ip_range_end = 210 + ip_range_end = ip_range_start + n_distinct_dst_tunnels for dest_ip4n in ip4n_range(cls.mcast_ip4n, ip_range_start, ip_range_end): vni = bytearray(dest_ip4n)[3] @@ -100,12 +157,12 @@ class TestVxlan(BridgeDomain, VppTestCase): is_add=is_add) @classmethod - def add_mcast_load(cls): - cls.add_del_mcast_load(is_add=1) + def add_mcast_tunnels_load(cls): + cls.add_del_mcast_tunnels_load(is_add=1) @classmethod - def del_mcast_load(cls): - cls.add_del_mcast_load(is_add=0) + def del_mcast_tunnels_load(cls): + cls.add_del_mcast_tunnels_load(is_add=0) # Class method to start the VXLAN test case. # Overrides setUpClass method in VppTestCase class. @@ -166,8 +223,10 @@ class TestVxlan(BridgeDomain, VppTestCase): bd_id=cls.mcast_flood_bd) # Add and delete mcast tunnels to check stability - cls.add_mcast_load() - cls.del_mcast_load() + 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 @@ -179,6 +238,35 @@ class TestVxlan(BridgeDomain, VppTestCase): super(TestVxlan, cls).tearDownClass() raise + def test_encap_big_packet(self): + """ Encapsulation test send big frame from pg1 + Verify receipt of encapsulated frames on pg0 + """ + + self.vapi.sw_interface_set_mtu(self.pg0.sw_if_index, [1500, 0, 0, 0]) + + frame = (Ether(src='00:00:00:00:00:02', dst='00:00:00:00:00:01') / + IP(src='4.3.2.1', dst='1.2.3.4') / + UDP(sport=20000, dport=10000) / + Raw('\xa5' * 1450)) + + self.pg1.add_stream([frame]) + + self.pg0.enable_capture() + + self.pg_start() + + # Pick first received frame and check if it's correctly encapsulated. + out = self.pg0.get_capture(2) + ether = out[0] + pkt = reassemble(out) + pkt = ether / pkt + self.check_encapsulation(pkt, self.single_tunnel_bd) + + payload = self.decapsulate(pkt) + # TODO: Scapy bug? + # self.assert_eq_pkts(payload, frame) + # Method to define VPP actions before tear down of the test case. # Overrides tearDown method in VppTestCase class. # @param self The object pointer.