def build_icmp_packet(vlan_id,
src_mac="00:22:00:00:00:02",
dst_mac="ff:ff:ff:ff:ff:ff",
src_ip="192.168.0.1",
dst_ip="192.168.0.2",
ttl=64):
pkt = testutils.simple_icmp_packet(
pktlen=100 if vlan_id == 0 else 104,
eth_dst=dst_mac,
eth_src=src_mac,
dl_vlan_enable=False if vlan_id == 0 else True,
vlan_vid=vlan_id,
vlan_pcp=0,
ip_src=src_ip,
ip_dst=dst_ip,
ip_ttl=ttl)
return pkt
def test_host_vlan_no_floodling(
duthosts,
rand_one_dut_hostname,
ptfadapter,
setup_host_vlan_intf_mac,
testbed_params,
toggle_all_simulator_ports_to_rand_selected_tor,
):
"""
Aims to verify that for packets detinated to the host vlan interface, the packets should not be flooding
in the host bridge vlan member ports.
"""
duthost = duthosts[rand_one_dut_hostname]
vlan_intf, vlan_member_ports_to_ptf_ports = testbed_params
vlan_intf_mac = duthost.get_dut_iface_mac(vlan_intf["attachto"])
selected_test_ports = random.sample(vlan_member_ports_to_ptf_ports, HOST_PORT_FLOODING_CHECK_COUNT + 1)
test_dut_port = selected_test_ports[0]
test_ptf_port = vlan_member_ports_to_ptf_ports[test_dut_port]
test_ptf_port_mac = ptfadapter.dataplane.get_mac(0, test_ptf_port)
dut_ports_to_check = selected_test_ports[1:]
icmp_pkt = testutils.simple_icmp_packet(
eth_dst=vlan_intf_mac,
eth_src=test_ptf_port_mac,
ip_src=ICMP_PKT_SRC_IP,
ip_dst=vlan_intf["addr"],
icmp_data=ICMP_PKT_FINGERPRINT
)
ptfadapter.before_send = lambda *kargs, **kwargs: time.sleep(.5)
for dut_port_to_check in dut_ports_to_check:
with log_icmp_updates(duthost, iface=dut_port_to_check, save_path=DUT_ICMP_DUMP_FILE):
testutils.send(ptfadapter, test_ptf_port, icmp_pkt, count=ICMP_PKT_COUNT)
with tempfile.NamedTemporaryFile() as tmp_pcap:
duthost.fetch(src=DUT_ICMP_DUMP_FILE, dest=tmp_pcap.name, flat=True)
icmp_pkts = sniff(offline=tmp_pcap.name)
if len([_ for _ in icmp_pkts if ICMP_PKT_FINGERPRINT in str(_)]) > 0:
pytest.fail("Received ICMP packet destinated to VLAN interface %s on host interface %s" % (vlan_intf["attachto"], dut_port_to_check))
def icmp_packet(self, setup, direction, ptfadapter, ip_version, src_ip=None, dst_ip=None, icmp_type=8, icmp_code=0):
"""Generate an ICMP packet for testing."""
src_ip = src_ip or DEFAULT_SRC_IP[ip_version]
dst_ip = dst_ip or self.get_dst_ip(direction, ip_version)
if ip_version == "ipv4":
return testutils.simple_icmp_packet(
eth_dst=setup["destination_mac"][direction][self.src_port],
eth_src=ptfadapter.dataplane.get_mac(0, 0),
ip_dst=dst_ip,
ip_src=src_ip,
icmp_type=icmp_type,
icmp_code=icmp_code,
ip_ttl=64,
)
else:
return testutils.simple_icmpv6_packet(
eth_dst=setup["destination_mac"][direction][self.src_port],
eth_src=ptfadapter.dataplane.get_mac(0, 0),
ipv6_dst=dst_ip,
ipv6_src=src_ip,
icmp_type=icmp_type,
icmp_code=icmp_code,
ipv6_hlim=64,
)
def create_packet(eth_dst,
eth_src,
ip_dst,
ip_src,
vlan_vid,
tr_type,
ttl,
dl_vlan_enable=False,
icmp_type=8,
pktlen=100,
ip_tunnel=None):
"""
Generate packet to send.
Args:
eth_dst: Destination Ethernet address
eth_src: Source Ethernet address
ip_dst: Destination IP address
ip_src: Source IP address
vlan_vid: VLAN ID
tr_type: Type of traffic
ttl: Time to live
dl_vlan_enable: True if the packet is with vlan, False otherwise
icmp_type: ICMP type
pktlen: packet length
ip_tunnel: Tunnel IP address of DUT
Returns: simple packet
"""
if 'TCP' in tr_type:
return testutils.simple_tcp_packet(eth_dst=eth_dst,
eth_src=eth_src,
ip_dst=ip_dst,
ip_src=ip_src,
tcp_sport=TCP_PORT,
tcp_dport=TCP_PORT,
vlan_vid=vlan_vid,
dl_vlan_enable=dl_vlan_enable,
ip_ttl=ttl,
pktlen=pktlen)
elif 'UDP' in tr_type:
return testutils.simple_udp_packet(eth_dst=eth_dst,
eth_src=eth_src,
ip_dst=ip_dst,
ip_src=ip_src,
udp_sport=UDP_PORT,
udp_dport=UDP_PORT,
vlan_vid=vlan_vid,
dl_vlan_enable=dl_vlan_enable,
ip_ttl=ttl,
pktlen=pktlen)
elif 'ICMP' in tr_type:
return testutils.simple_icmp_packet(eth_dst=eth_dst,
eth_src=eth_src,
ip_dst=ip_dst,
ip_src=ip_src,
icmp_type=icmp_type,
vlan_vid=vlan_vid,
dl_vlan_enable=dl_vlan_enable,
ip_ttl=ttl,
pktlen=pktlen)
elif 'decap' in tr_type:
inner_dscp = random.choice(range(0, 33))
inner_ttl = random.choice(range(3, 65))
inner_packet = testutils.simple_tcp_packet(
ip_dst=ip_dst,
ip_src=ip_src,
tcp_sport=TCP_PORT,
tcp_dport=TCP_PORT,
ip_ttl=inner_ttl,
ip_dscp=inner_dscp)[packet.IP]
return testutils.simple_ipv4ip_packet(eth_dst=eth_dst,
eth_src=eth_src,
ip_src='1.1.1.1',
ip_dst=ip_tunnel,
ip_dscp=inner_dscp,
ip_ttl=64,
vlan_vid=vlan_vid,
dl_vlan_enable=dl_vlan_enable,
inner_frame=inner_packet)
return None
def create_packet(eth_dst,
eth_src,
ip_dst,
ip_src,
vlan_vid,
tr_type,
ttl,
dl_vlan_enable=False,
icmp_type=8,
pktlen=100):
"""
Generate packet to send.
Args:
eth_dst: Destination Ethernet address
eth_src: Source Ethernet address
ip_dst: Destination IP address
ip_src: Source IP address
vlan_vid: VLAN ID
tr_type: Type of traffic
ttl: Time to live
dl_vlan_enable: True if the packet is with vlan, False otherwise
icmp_type: ICMP type
pktlen: packet length
Returns: simple packet
"""
if 'TCP' in tr_type:
return testutils.simple_tcp_packet(eth_dst=eth_dst,
eth_src=eth_src,
ip_dst=ip_dst,
ip_src=ip_src,
tcp_sport=TCP_PORT,
tcp_dport=TCP_PORT,
vlan_vid=vlan_vid,
dl_vlan_enable=dl_vlan_enable,
ip_ttl=ttl,
pktlen=pktlen)
elif 'UDP' in tr_type:
return testutils.simple_udp_packet(eth_dst=eth_dst,
eth_src=eth_src,
ip_dst=ip_dst,
ip_src=ip_src,
udp_sport=UDP_PORT,
udp_dport=UDP_PORT,
vlan_vid=vlan_vid,
dl_vlan_enable=dl_vlan_enable,
ip_ttl=ttl,
pktlen=pktlen)
elif 'ICMP' in tr_type:
return testutils.simple_icmp_packet(eth_dst=eth_dst,
eth_src=eth_src,
ip_dst=ip_dst,
ip_src=ip_src,
icmp_type=icmp_type,
vlan_vid=vlan_vid,
dl_vlan_enable=dl_vlan_enable,
ip_ttl=ttl,
pktlen=pktlen)
return None
def runTest(self):
pkt = simple_icmp_packet()
exp_pkt = simple_icmp_packet()
send_packet(self, (0, 1), pkt)
verify_packets(self, exp_pkt, device_number=0, ports=[2])
