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# Copyright (c) 2017 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 / IPv6 /
- Direction 0 --> 1:
- Source IP address range: 2001:1::2 - 2001:1::FE
- Destination IP address range: 2001:2::2
- Direction 1 --> 0:
- Source IP address range: 2001:2::2 - 2001:2::FE
- Destination IP address range: 2001:1::2
"""
from trex_stl_lib.api import *
from profile_trex_stateless_base_class import TrafficStreamsBaseClass
class TrafficStreams(TrafficStreamsBaseClass):
"""Stream profile."""
def __init__(self):
"""Initialization and setting of streams' parameters."""
super(TrafficStreamsBaseClass, self).__init__()
# IPs used in packet headers.
self.p1_src_start_ip = '2001:1::2'
self.p1_src_end_ip = '2001:1::FE'
self.p1_dst_start_ip = '2001:2::2'
self.p2_src_start_ip = '2001:2::2'
self.p2_src_end_ip = '2001:2::FE'
self.p2_dst_start_ip = '2001:1::2'
def define_packets(self):
"""Defines the packets to be sent from the traffic generator.
Packet definition: | ETH | IPv6 |
:returns: Packets to be sent from the traffic generator.
:rtype: tuple
"""
base_p1, count_p1 = self._get_start_end_ipv6(self.p1_src_start_ip,
self.p1_src_end_ip)
base_p2, count_p2 = self._get_start_end_ipv6(self.p2_src_start_ip,
self.p2_src_end_ip)
# Direction 0 --> 1
base_pkt_a = Ether() / IPv6(src=self.p1_src_start_ip,
dst=self.p1_dst_start_ip)
# Direction 1 --> 0
base_pkt_b = Ether() / IPv6(src=self.p2_src_start_ip,
dst=self.p2_dst_start_ip)
# Direction 0 --> 1
vm1 = STLScVmRaw([STLVmFlowVar(name="ipv6_src",
min_value=base_p1,
max_value=base_p1 + count_p1,
size=8, op="inc"),
STLVmWrFlowVar(fv_name="ipv6_src",
pkt_offset="IPv6.src",
offset_fixup=8)])
# Direction 1 --> 0
vm2 = STLScVmRaw([STLVmFlowVar(name="ipv6_src",
min_value=base_p2,
max_value=base_p2 + count_p2,
size=8, op="inc"),
STLVmWrFlowVar(fv_name="ipv6_src",
pkt_offset="IPv6.src",
offset_fixup=8)])
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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