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# Copyright (c) 2023 Cisco and/or its affiliates.
#
# SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
#
# Licensed under the Apache License 2.0 or
# GNU General Public License v2.0 or later; you may not use this file
# except in compliance with one of these Licenses. You
# may obtain a copy of the Licenses at:
#
# http://www.apache.org/licenses/LICENSE-2.0
# https://www.gnu.org/licenses/old-licenses/gpl-2.0-standalone.html
#
# Note: If this file is linked with Scapy, which is GPLv2+, your use of it
# must be under GPLv2+. If at any point in the future it is no longer linked
# with Scapy (or other GPLv2+ licensed software), you are free to choose
# Apache 2.
#
# 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..9].2
- Destination IP address: 172.16.0.1
- Source UDP port: random([1024..65535])
- Destination UDP port: 4789
- VXLAN VNI: [0..9]
- 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..9].2
- Destination IP address: 172.26.0.1
- Source UDP port: random([1024..65535])
- Destination UDP port: 4789
- VXLAN VNI: [0..9]
- 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(u"R"*24 + u"RRRIRRRRR")
class VXLAN(Packet):
name=u"VXLAN"
fields_desc = [
FlagsField(u"flags", 0x08000000, 32, _VXLAN_FLAGS),
ThreeBytesField(u"vni", 0),
XByteField(u"reserved", 0x00)
]
def mysummary(self):
return self.sprintf(u"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 = 10
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=u"172.17.0.2",
dst=u"172.16.0.1"
)/
UDP(
sport=1024,
dport=4789
)/
VXLAN(
vni=0
)/
Ether(
src=u"00:aa:aa:00:00:00",
dst=u"00:bb:bb:00:00:00"
)/
IP(
src=u"10.0.0.2",
dst=u"10.0.0.1",
proto=61
)
)
# Direction 1 --> 0
base_pkt_b = (
Ether()/
Dot1Q(
vlan=200
) /
IP(
src=u"172.27.0.2",
dst=u"172.26.0.1"
)/
UDP(
sport=1024,
dport=4789
)/
VXLAN(
vni=0
)/
Ether(
src=u"00:bb:bb:00:00:00",
dst=u"00:aa:aa:00:00:00"
)/
IP(
src=u"10.0.0.1",
dst=u"10.0.0.2",
proto=61
)
)
# Direction 0 --> 1
vm1 = STLScVmRaw(
[
STLVmFlowVar(
name=u"nf_id",
size=1,
op=u"inc",
min_value=0,
max_value=self.nf_chains - 1
),
STLVmFlowVar(
name=u"in_mac",
size=2,
op=u"inc",
min_value=0,
max_value=255
),
STLVmFlowVar(
name=u"in_ip",
size=1,
op=u"inc",
min_value=0,
max_value=255
),
STLVmFlowVar(
name=u"src_port",
size=2,
op=u"random",
min_value=1024,
max_value=65535
),
STLVmWrFlowVar(
fv_name=u"nf_id",
pkt_offset=32
),
STLVmWrFlowVar(
fv_name=u"src_port",
pkt_offset=u"UDP.sport"
),
STLVmWrFlowVar(
fv_name=u"nf_id",
pkt_offset=52
),
STLVmWrFlowVar(
fv_name=u"in_mac",
pkt_offset=58
),
STLVmWrFlowVar(
fv_name=u"in_mac",
pkt_offset=64
),
STLVmWrFlowVar(
fv_name=u"in_ip",
pkt_offset=82
),
STLVmWrFlowVar(
fv_name=u"in_ip",
pkt_offset=86
),
STLVmFixChecksumHw(
l3_offset="IP:{}".format(0),
l4_offset="UDP:{}".format(0),
l4_type=CTRexVmInsFixHwCs.L4_TYPE_UDP
)
]
)
# Direction 1 --> 0
vm2 = STLScVmRaw(
[
STLVmFlowVar(
name=u"nf_id",
size=1,
op=u"inc",
min_value=0,
max_value=self.nf_chains - 1
),
STLVmFlowVar(
name=u"in_mac",
size=2, op=u"inc",
min_value=0,
max_value=255
),
STLVmFlowVar(
name=u"in_ip",
size=1,
op=u"inc",
min_value=0,
max_value=255
),
STLVmFlowVar(
name=u"src_port",
size=2,
op=u"random",
min_value=1024,
max_value=65535
),
STLVmWrFlowVar(
fv_name=u"nf_id",
pkt_offset=32
),
STLVmWrFlowVar(
fv_name=u"src_port",
pkt_offset=u"UDP.sport"
),
STLVmWrFlowVar(
fv_name=u"nf_id",
pkt_offset=52
),
STLVmWrFlowVar(
fv_name=u"in_mac",
pkt_offset=58
),
STLVmWrFlowVar(
fv_name=u"in_mac",
pkt_offset=64
),
STLVmWrFlowVar(
fv_name=u"in_ip",
pkt_offset=82
),
STLVmWrFlowVar(
fv_name=u"in_ip",
pkt_offset=86
),
STLVmFixChecksumHw(
l3_offset="IP:{}".format(0),
l4_offset="UDP:{}".format(0),
l4_type=CTRexVmInsFixHwCs.L4_TYPE_UDP
)
]
)
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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