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-rw-r--r--test/test_ip_mcast.py47
1 files changed, 38 insertions, 9 deletions
diff --git a/test/test_ip_mcast.py b/test/test_ip_mcast.py
index 957bab5a2af..864cb80319c 100644
--- a/test/test_ip_mcast.py
+++ b/test/test_ip_mcast.py
@@ -8,7 +8,7 @@ from vpp_ip_route import VppIpMRoute, VppMRoutePath, VppMFibSignal
from scapy.packet import Raw
from scapy.layers.l2 import Ether
-from scapy.layers.inet import IP, UDP, getmacbyip
+from scapy.layers.inet import IP, UDP, getmacbyip, ICMP
from scapy.layers.inet6 import IPv6, getmacbyip6
from util import ppp
@@ -70,16 +70,17 @@ class TestIPMcast(VppTestCase):
i.resolve_arp()
i.resolve_ndp()
- def create_stream_ip4(self, src_if, src_ip, dst_ip):
+ def create_stream_ip4(self, src_if, src_ip, dst_ip, payload_size=0):
pkts = []
+ # default to small packet sizes
+ p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
+ IP(src=src_ip, dst=dst_ip) /
+ UDP(sport=1234, dport=1234))
+ if not payload_size:
+ payload_size = 64 - len(p)
+ p = p / Raw('\xa5' * payload_size)
+
for i in range(0, N_PKTS_IN_STREAM):
- info = self.create_packet_info(src_if, src_if)
- payload = self.info_to_payload(info)
- p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
- IP(src=src_ip, dst=dst_ip) /
- UDP(sport=1234, dport=1234) /
- Raw(payload))
- info.data = p.copy()
pkts.append(p)
return pkts
@@ -237,6 +238,7 @@ class TestIPMcast(VppTestCase):
#
# a stream that matches the route for (1.1.1.1,232.1.1.1)
+ # small packets
#
self.vapi.cli("clear trace")
tx = self.create_stream_ip4(self.pg0, "1.1.1.1", "232.1.1.1")
@@ -261,6 +263,33 @@ class TestIPMcast(VppTestCase):
remark="IP multicast packets forwarded on PG3")
#
+ # a stream that matches the route for (1.1.1.1,232.1.1.1)
+ # large packets
+ #
+ self.vapi.cli("clear trace")
+ tx = self.create_stream_ip4(self.pg0, "1.1.1.1", "232.1.1.1",
+ payload_size=1024)
+ self.pg0.add_stream(tx)
+
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ # We expect replications on Pg1->7
+ self.verify_capture_ip4(self.pg1, tx)
+ self.verify_capture_ip4(self.pg2, tx)
+ self.verify_capture_ip4(self.pg3, tx)
+ self.verify_capture_ip4(self.pg4, tx)
+ self.verify_capture_ip4(self.pg5, tx)
+ self.verify_capture_ip4(self.pg6, tx)
+ self.verify_capture_ip4(self.pg7, tx)
+
+ # no replications on Pg0
+ self.pg0.assert_nothing_captured(
+ remark="IP multicast packets forwarded on PG0")
+ self.pg3.assert_nothing_captured(
+ remark="IP multicast packets forwarded on PG3")
+
+ #
# a stream that matches the route for (*,232.0.0.0/8)
# Send packets with the 9th bit set so we test the correct clearing
# of that bit in the mac rewrite