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-rw-r--r--test/test_neighbor.py81
1 files changed, 81 insertions, 0 deletions
diff --git a/test/test_neighbor.py b/test/test_neighbor.py
index 885bf5a4f4b..2ce0a635386 100644
--- a/test/test_neighbor.py
+++ b/test/test_neighbor.py
@@ -5,10 +5,12 @@ from socket import AF_INET, AF_INET6, inet_pton
from framework import VppTestCase, VppTestRunner
from vpp_neighbor import VppNeighbor, find_nbr
+from vpp_ip_route import VppIpRoute, VppRoutePath
from scapy.packet import Raw
from scapy.layers.l2 import Ether, ARP
from scapy.layers.inet import IP, UDP
+from scapy.contrib.mpls import MPLS
# not exported by scapy, so redefined here
arp_opts = {"who-has": 1, "is-at": 2}
@@ -88,6 +90,18 @@ class ARPTestCase(VppTestCase):
self.assertEqual(ip.src, sip)
self.assertEqual(ip.dst, dip)
+ def verify_ip_o_mpls(self, rx, smac, dmac, label, sip, dip):
+ ether = rx[Ether]
+ self.assertEqual(ether.dst, dmac)
+ self.assertEqual(ether.src, smac)
+
+ mpls = rx[MPLS]
+ self.assertTrue(mpls.label, label)
+
+ ip = rx[IP]
+ self.assertEqual(ip.src, sip)
+ self.assertEqual(ip.dst, dip)
+
def send_and_assert_no_replies(self, intf, pkts, remark):
intf.add_stream(pkts)
self.pg_enable_capture(self.pg_interfaces)
@@ -430,3 +444,70 @@ class ARPTestCase(VppTestCase):
"ARP req from disable")
self.send_and_assert_no_replies(self.pg2, arp_req_pg2,
"ARP req from disable")
+
+ #
+ # clean up on interface 2
+ #
+ self.pg2.set_unnumbered(self.pg1.sw_if_index)
+
+ def test_mpls(self):
+ """ MPLS """
+
+ #
+ # Interface 2 does not yet have ip4 config
+ #
+ self.pg2.config_ip4()
+ self.pg2.generate_remote_hosts(2)
+
+ #
+ # Add a reoute with out going label via an ARP unresolved next-hop
+ #
+ ip_10_0_0_1 = VppIpRoute(self, "10.0.0.1", 32,
+ [VppRoutePath(self.pg2.remote_hosts[1].ip4,
+ self.pg2.sw_if_index,
+ labels=[55])])
+ ip_10_0_0_1.add_vpp_config()
+
+ #
+ # packets should generate an ARP request
+ #
+ p = (Ether(src=self.pg0.remote_mac,
+ dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst="10.0.0.1") /
+ UDP(sport=1234, dport=1234) /
+ Raw('\xa5' * 100))
+
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx = self.pg2.get_capture(1)
+ self.verify_arp_req(rx[0],
+ self.pg2.local_mac,
+ self.pg2.local_ip4,
+ self.pg2._remote_hosts[1].ip4)
+
+ #
+ # now resolve the neighbours
+ #
+ self.pg2.configure_ipv4_neighbors()
+
+ #
+ # Now packet should be properly MPLS encapped.
+ # This verifies that MPLS link-type adjacencies are completed
+ # when the ARP entry resolves
+ #
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx = self.pg2.get_capture(1)
+ self.verify_ip_o_mpls(rx[0],
+ self.pg2.local_mac,
+ self.pg2.remote_hosts[1].mac,
+ 55,
+ self.pg0.remote_ip4,
+ "10.0.0.1")
+
+if __name__ == '__main__':
+ unittest.main(testRunner=VppTestRunner)