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# Copyright (c) 2019 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 / DOT1Q / IP / VXLAN / ETH / IP
- Direction 0 --> 1:
- VLAN range: 100
- Source IP address: 172.17.0.2
- Destination IP address: 172.16.0.1
- Source UDP port: random([1024..65535])
- Destination UDP port: 4789
- VXLAN VNI: 0
- Payload source MAC address: 00:aa:aa:00:00:[00..ff]
- Payload source IP address: 10.0.[0..255].2
- Payload destination MAC address: 00:bb:bb:00:00:[00..ff]
- Payload destination IP address: 10.0.[0..255].1
- Direction 1 --> 0:
- VLAN range: 200
- Source IP address: 172.27.0.2
- Destination IP address: 172.26.0.1
- Source UDP port: random([1024..65535])
- Destination UDP port: 4789
- VXLAN VNI: 0
- Payload source MAC address: 00:bb:bb:00:00:[00..ff]
- Payload source IP address: 10.0.[0..255].1
- Payload destination MAC address: 00:aa:aa:00:00:[00..ff]
- Payload destination IP address: 10.0.[0..255].2
"""
from trex.stl.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__()
self.nf_chains = 1
def define_packets(self):
"""Defines the packets to be sent from the traffic generator.
Packet definition: | ETH | DOT1Q | IP | VXLAN | ETH | IP
:returns: Packets to be sent from the traffic generator.
:rtype: tuple
"""
# Direction 0 --> 1
base_pkt_a = (
Ether()/
Dot1Q(vlan=100) /
IP(src='172.17.0.2', dst='172.16.0.1')/
UDP(sport=1024, dport=4789)/
VXLAN(vni=0)/
Ether(src='00:aa:aa:00:00:00', dst='00:bb:bb:00:00:00')/
IP(src='10.0.0.2', dst='10.0.0.1', proto=61))
# Direction 1 --> 0
base_pkt_b = (
Ether()/
Dot1Q(vlan=200) /
IP(src='172.27.0.2', dst='172.26.0.1')/
UDP(sport=1024, dport=4789)/
VXLAN(vni=0)/
Ether(src='00:bb:bb:00:00:00', dst='00:aa:aa:00:00:00')/
IP(src='10.0.0.1', dst='10.0.0.2', proto=61))
# Direction 0 --> 1
vm1 = STLScVmRaw([
STLVmFlowVar(name='nf_id', size=1, op='inc',
min_value=0, max_value=self.nf_chains - 1),
STLVmFlowVar(name='in_mac', size=2, op='inc',
min_value=0, max_value=255),
STLVmFlowVar(name='in_ip', size=1, op='inc',
min_value=0, max_value=255),
STLVmFlowVar(name='src_port', size=2, op='random',
min_value=1024, max_value=65535),
STLVmWrFlowVar(fv_name='nf_id', pkt_offset=32),
STLVmWrFlowVar(fv_name='src_port', pkt_offset='UDP.sport'),
STLVmWrFlowVar(fv_name='nf_id', pkt_offset=52),
STLVmWrFlowVar(fv_name='in_mac', pkt_offset=58),
STLVmWrFlowVar(fv_name='in_mac', pkt_offset=64),
STLVmWrFlowVar(fv_name='in_ip', pkt_offset=82),
STLVmWrFlowVar(fv_name='in_ip', pkt_offset=86),
STLVmFixIpv4(offset = 'IP')
])
# Direction 1 --> 0
vm2 = STLScVmRaw([
STLVmFlowVar(name='nf_id', size=1, op='inc',
min_value=0, max_value=self.nf_chains - 1),
STLVmFlowVar(name='in_mac', size=2, op='inc',
min_value=0, max_value=255),
STLVmFlowVar(name='in_ip', size=1, op='inc',
min_value=0, max_value=255),
STLVmFlowVar(name='src_port', size=2, op='random',
min_value=1024, max_value=65535),
STLVmWrFlowVar(fv_name='nf_id', pkt_offset=32),
STLVmWrFlowVar(fv_name='src_port', pkt_offset='UDP.sport'),
STLVmWrFlowVar(fv_name='nf_id', pkt_offset=52),
STLVmWrFlowVar(fv_name='in_mac', pkt_offset=58),
STLVmWrFlowVar(fv_name='in_mac', pkt_offset=64),
STLVmWrFlowVar(fv_name='in_ip', pkt_offset=82),
STLVmWrFlowVar(fv_name='in_ip', pkt_offset=86),
STLVmFixIpv4(offset = 'IP')
])
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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