def verify_capture_ip4(self, rx_if, sent, dst_mac=None):
rxd = rx_if.get_capture(len(sent))
try:
capture = self.verify_filter(rxd, sent)
self.assertEqual(len(capture), len(sent))
for i in range(len(capture)):
tx = sent[i]
rx = capture[i]
eth = rx[Ether]
self.assertEqual(eth.type, 0x800)
tx_ip = tx[IP]
rx_ip = rx[IP]
if dst_mac is None:
dst_mac = getmacbyip(rx_ip.dst)
# check the MAC address on the RX'd packet is correctly formed
self.assertEqual(eth.dst, dst_mac)
self.assertEqual(rx_ip.src, tx_ip.src)
self.assertEqual(rx_ip.dst, tx_ip.dst)
# IP processing post pop has decremented the TTL
self.assertEqual(rx_ip.ttl + 1, tx_ip.ttl)
except:
raise
def verify_capture_ip4(self, src_if, sent):
rxd = self.pg1.get_capture(N_PKTS_IN_STREAM)
try:
capture = self.verify_filter(rxd, sent)
self.assertEqual(len(capture), len(sent))
for i in range(len(capture)):
tx = sent[i]
rx = capture[i]
# the rx'd packet has the MPLS label popped
eth = rx[Ether]
self.assertEqual(eth.type, 0x800)
tx_ip = tx[IP]
rx_ip = rx[IP]
# check the MAC address on the RX'd packet is correctly formed
self.assertEqual(eth.dst, getmacbyip(rx_ip.dst))
self.assertEqual(rx_ip.src, tx_ip.src)
self.assertEqual(rx_ip.dst, tx_ip.dst)
# IP processing post pop has decremented the TTL
self.assertEqual(rx_ip.ttl + 1, tx_ip.ttl)
except:
raise
def verify_capture_ip4(self, rx_if, sent, dst_mac=None):
rxd = rx_if.get_capture(len(sent))
try:
capture = self.verify_filter(rxd, sent)
self.assertEqual(len(capture), len(sent))
for i in range(len(capture)):
tx = sent[i]
rx = capture[i]
eth = rx[Ether]
self.assertEqual(eth.type, 0x800)
tx_ip = tx[IP]
rx_ip = rx[IP]
if dst_mac is None:
dst_mac = getmacbyip(rx_ip.dst)
# check the MAC address on the RX'd packet is correctly formed
self.assertEqual(eth.dst, dst_mac)
self.assertEqual(rx_ip.src, tx_ip.src)
self.assertEqual(rx_ip.dst, tx_ip.dst)
# IP processing post pop has decremented the TTL
self.assertEqual(rx_ip.ttl + 1, tx_ip.ttl)
except:
raise
def create_stream_ip4(self, src_if, src_ip, dst_ip, payload_size=0):
pkts = []
# default to small packet sizes
p = (Ether(dst=getmacbyip(dst_ip), 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(b'\xa5' * payload_size)
for i in range(0, N_PKTS_IN_STREAM):
pkts.append(p)
return pkts
def test_ip_mcast_vrf(self):
"""IP Multicast Replication in non-default table"""
MRouteItfFlags = VppEnum.vl_api_mfib_itf_flags_t
MRouteEntryFlags = VppEnum.vl_api_mfib_entry_flags_t
#
# 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",
"232.1.1.1",
64,
MRouteEntryFlags.MFIB_API_ENTRY_FLAG_NONE,
[
VppMRoutePath(self.pg8.sw_if_index,
MRouteItfFlags.MFIB_API_ITF_FLAG_ACCEPT),
VppMRoutePath(self.pg1.sw_if_index,
MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD),
VppMRoutePath(self.pg2.sw_if_index,
MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD),
],
table_id=10,
)
route_1_1_1_1_232_1_1_1.add_vpp_config()
#
# 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.pg8, "1.1.1.1", "232.1.1.1")
self.pg8.add_stream(tx)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
# We expect replications on Pg1 & 2
self.verify_capture_ip4(self.pg1, tx)
self.verify_capture_ip4(self.pg2, tx)
#
# An (S,G). for for-us
#
route_0_0_0_0_224_0_0_5 = VppIpMRoute(
self,
"0.0.0.0",
"224.0.0.5",
32,
MRouteEntryFlags.MFIB_API_ENTRY_FLAG_NONE,
[
VppMRoutePath(self.pg8.sw_if_index,
MRouteItfFlags.MFIB_API_ITF_FLAG_ACCEPT),
VppMRoutePath(
0xFFFFFFFF,
MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD,
type=FibPathType.FIB_PATH_TYPE_LOCAL,
),
],
table_id=10,
)
route_0_0_0_0_224_0_0_5.add_vpp_config()
#
# a stream that matches the route for (0.0.0.0, 224.0.0.5)
# small packets
#
self.vapi.cli("clear trace")
self.pg8.resolve_arp()
#
# send a ping to mcast address from peer on pg8
# expect a response
#
icmp_id = 0xB
icmp_seq = 5
icmp_load = b"\x0a" * 18
tx = (Ether(dst=getmacbyip("224.0.0.5"), src=self.pg8.remote_mac) /
IP(src=self.pg8.remote_ip4, dst="224.0.0.5") /
ICMP(id=icmp_id, seq=icmp_seq) / Raw(load=icmp_load)) * 2
self.send_and_expect(self.pg8, tx, self.pg8)
