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-rw-r--r--test/test_ip_mcast.py76
1 files changed, 75 insertions, 1 deletions
diff --git a/test/test_ip_mcast.py b/test/test_ip_mcast.py
index b753f9a3354..d1f26d11325 100644
--- a/test/test_ip_mcast.py
+++ b/test/test_ip_mcast.py
@@ -6,9 +6,10 @@ from framework import VppTestCase, VppTestRunner
from vpp_ip import DpoProto
from vpp_ip_route import VppIpMRoute, VppMRoutePath, VppMFibSignal, \
MRouteItfFlags, MRouteEntryFlags, VppIpTable, FibPathProto
+from vpp_gre_interface import VppGreInterface
from scapy.packet import Raw
-from scapy.layers.l2 import Ether
+from scapy.layers.l2 import Ether, GRE
from scapy.layers.inet import IP, UDP, getmacbyip
from scapy.layers.inet6 import IPv6, getmacbyip6
@@ -795,6 +796,79 @@ class TestIPMcast(VppTestCase):
self.verify_capture_ip4(self.pg1, tx)
self.verify_capture_ip4(self.pg2, tx)
+ def test_ip_mcast_gre(self):
+ """ IP Multicast Replication over GRE"""
+
+ gre_if_1 = VppGreInterface(
+ self,
+ self.pg1.local_ip4,
+ self.pg1.remote_ip4).add_vpp_config()
+ gre_if_2 = VppGreInterface(
+ self,
+ self.pg2.local_ip4,
+ self.pg2.remote_ip4).add_vpp_config()
+ gre_if_3 = VppGreInterface(
+ self,
+ self.pg3.local_ip4,
+ self.pg3.remote_ip4).add_vpp_config()
+
+ gre_if_1.admin_up()
+ gre_if_1.config_ip4()
+ gre_if_2.admin_up()
+ gre_if_2.config_ip4()
+ gre_if_3.admin_up()
+ gre_if_3.config_ip4()
+
+ #
+ # An (S,G).
+ # one accepting interface, pg0, 2 forwarding interfaces
+ #
+ route_1_1_1_1_232_1_1_1 = VppIpMRoute(
+ self,
+ "1.1.1.1",
+ "232.2.2.2", 64,
+ MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
+ [VppMRoutePath(gre_if_1.sw_if_index,
+ MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT),
+ VppMRoutePath(gre_if_2.sw_if_index,
+ MRouteItfFlags.MFIB_ITF_FLAG_FORWARD),
+ VppMRoutePath(gre_if_3.sw_if_index,
+ MRouteItfFlags.MFIB_ITF_FLAG_FORWARD)])
+ route_1_1_1_1_232_1_1_1.add_vpp_config()
+
+ #
+ # a stream that matches the route for (1.1.1.1,232.2.2.2)
+ # small packets
+ #
+ tx = (Ether(dst=self.pg1.local_mac,
+ src=self.pg1.remote_mac) /
+ IP(src=self.pg1.remote_ip4,
+ dst=self.pg1.local_ip4) /
+ GRE() /
+ IP(src="1.1.1.1", dst="232.2.2.2") /
+ UDP(sport=1234, dport=1234) /
+ Raw('\a5' * 64)) * 63
+
+ self.vapi.cli("clear trace")
+ self.pg1.add_stream(tx)
+
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ # We expect replications on Pg2 & 3
+ # check the encap headers are as expected based on the egress tunnel
+ rxs = self.pg2.get_capture(len(tx))
+ for rx in rxs:
+ self.assertEqual(rx[IP].src, gre_if_2.t_src)
+ self.assertEqual(rx[IP].dst, gre_if_2.t_dst)
+ self.assert_packet_checksums_valid(rx)
+
+ rxs = self.pg3.get_capture(len(tx))
+ for rx in rxs:
+ self.assertEqual(rx[IP].src, gre_if_3.t_src)
+ self.assertEqual(rx[IP].dst, gre_if_3.t_dst)
+ self.assert_packet_checksums_valid(rx)
+
def test_ip6_mcast_vrf(self):
""" IPv6 Multicast Replication in non-default table"""