+ 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(b"\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_gre(self):
+ """IP6 Multicast Replication over GRE"""
+
+ MRouteItfFlags = VppEnum.vl_api_mfib_itf_flags_t
+ MRouteEntryFlags = VppEnum.vl_api_mfib_entry_flags_t
+
+ 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_ip6()
+ gre_if_2.admin_up()
+ gre_if_2.config_ip6()
+ gre_if_3.admin_up()
+ gre_if_3.config_ip6()
+
+ #
+ # An (S,G).
+ # one accepting interface, pg0, 2 forwarding interfaces
+ #
+ route_1_1_FF_1 = VppIpMRoute(
+ self,
+ "1::1",
+ "FF00::1",
+ 256,
+ MRouteEntryFlags.MFIB_API_ENTRY_FLAG_NONE,
+ [
+ VppMRoutePath(
+ gre_if_1.sw_if_index, MRouteItfFlags.MFIB_API_ITF_FLAG_ACCEPT
+ ),
+ VppMRoutePath(
+ gre_if_2.sw_if_index, MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD
+ ),
+ VppMRoutePath(
+ gre_if_3.sw_if_index, MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD
+ ),
+ ],
+ )
+ route_1_1_FF_1.add_vpp_config()
+
+ #
+ # a stream that matches the route for (1::1, FF::1)
+ # 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()
+ / IPv6(src="1::1", dst="FF00::1")
+ / UDP(sport=1234, dport=1234)
+ / Raw(b"\a5" * 64)
+ ) * 63