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# Copyright (c) 2018 Cisco and/or its affiliates.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at:
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Stream profile for T-rex traffic generator.
Stream profile:
- Two streams sent in directions 0 --> 1 and 1 --> 0 at the same time.
- Packet: ETH / IP / VXLAN / ETH / IP
- Direction 0 --> 1:
- Source IP address: 172.17.0.2
- Destination IP address: 172.16.0.1
- VXLAN VNI: 24
- Payload source MAC address: 00:de:ad:00:00:00
- Payload source IP address: 10.0.0.2
- Payload destination MAC address: 00:de:ad:00:00:01
- Payload destination IP address: 10.0.0.1
- Direction 1 --> 0:
- Source IP address: 172.27.0.2
- Destination IP address: 172.26.0.1
- VXLAN VNI: 24
- Payload source MAC address: 00:de:ad:00:00:01
- Payload source IP address: 10.0.0.1
- Payload destination MAC address: 00:de:ad:00:00:00
- Payload destination IP address: 10.0.0.2
"""
from trex_stl_lib.api import *
from profile_trex_stateless_base_class import TrafficStreamsBaseClass
# RFC 7348 - Virtual eXtensible Local Area Network (VXLAN):
# A Framework for Overlaying Virtualized Layer 2 Networks over Layer 3 Networks
# http://tools.ietf.org/html/rfc7348
_VXLAN_FLAGS = list('R'*24 + "RRRIRRRRR")
class VXLAN(Packet):
name = "VXLAN"
fields_desc = [FlagsField("flags", 0x08000000, 32, _VXLAN_FLAGS),
ThreeBytesField("vni", 0),
XByteField("reserved", 0x00)]
def mysummary(self):
return self.sprintf("VXLAN (vni=%VXLAN.vni%)")
bind_layers(UDP, VXLAN, dport=4789)
bind_layers(VXLAN, Ether)
class TrafficStreams(TrafficStreamsBaseClass):
"""Stream profile."""
def __init__(self):
"""Initialization and setting of streams' parameters."""
super(TrafficStreamsBaseClass, self).__init__()
def define_packets(self):
"""Defines the packets to be sent from the traffic generator.
Packet definition: | ETH | IP |
:returns: Packets to be sent from the traffic generator.
:rtype: tuple
"""
# Direction 0 --> 1
base_pkt_a = (
Ether()/
IP(src="172.17.0.2",dst="172.16.0.1")/
UDP(sport=1337,dport=4789)/
VXLAN(vni=24)/
Ether(src="00:de:ad:00:00:00",dst="00:de:ad:00:00:01")/
IP(src="10.0.0.2",dst="10.0.0.1"))
# Direction 1 --> 0
base_pkt_b = (
Ether()/
IP(src="172.27.0.2",dst="172.26.0.1")/
UDP(sport=1337,dport=4789)/
VXLAN(vni=24)/
Ether(src="00:de:ad:00:00:01",dst="00:de:ad:00:00:00")/
IP(src="10.0.0.1",dst="10.0.0.2"))
# Direction 0 --> 1
vm1 = STLScVmRaw([
STLVmFlowVar(name="src", min_value="172.17.0.2" ,
max_value="172.17.0.254", size=4, op="inc"),
STLVmFlowVar(name="src_mac", min_value=2 , max_value=3100,
size=2, op="inc"),
STLVmWrFlowVar(fv_name="src", pkt_offset="IP.src"),
STLVmWrFlowVar(fv_name="src_mac", pkt_offset=60),
STLVmFixIpv4(offset = "IP")
])
# Direction 1 --> 0
vm2 = STLScVmRaw([
STLVmFlowVar(name="src", min_value="172.27.0.2" ,
max_value="172.27.0.254", size=4, op="inc"),
STLVmFlowVar(name="src_mac", min_value=2 , max_value=3100,
size=2, op="inc"),
STLVmWrFlowVar(fv_name="src", pkt_offset="IP.src"),
STLVmWrFlowVar(fv_name="src_mac", pkt_offset=60),
STLVmFixIpv4(offset = "IP")
])
# for now there's a single VXLAN tunnel per direction, the above
# variations are for reference only
vm1, vm2 = [], []
return base_pkt_a, base_pkt_b, vm1, vm2
def register():
"""Register this traffic profile to T-rex.
Do not change this function.
:return: Traffic streams.
:rtype: Object
"""
return TrafficStreams()
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