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2019-12-06nsim: use explicit api typesOle Troan1-6/+7
2019-11-17nsim: add FEATURE.yamlDave Barach1-0/+8
2019-10-03nsim: remove api boilerplateOle Troan6-223/+11
2019-07-12nsim: cross-connect mode crash at interface output nodeJohn Lo2-6/+6
2019-07-09vat: unload unused vat pluginsDave Barach1-19/+1
2019-06-07build: add -Wall and -fno-common, fix reported issuesBenoƮt Ganne1-1/+0
2019-05-28nsim: remove buffer u32 upper boundKorian Edeline1-1/+1
2019-05-03plugins: clean up plugin descriptionsDave Wallace1-1/+1
2019-04-16VPP-1576: nsim-plugin coverity issuesDave Barach1-2/+19
2019-04-11Make the loss / delay sim available as an output featureDave Barach6-149/+629
2019-01-20buffers: don't init metadata, as it is already initializedDamjan Marion1-3/+0
2018-12-06nsim: add packet loss simulation, docsDave Barach6-8/+79
2018-11-14Remove c-11 memcpy checks from perf-critical codeDave Barach2-3/+3
2018-11-01Fix API name_crc format stored in msg_api_tableIgor Mikhailov (imichail)1-1/+1
2018-10-02VPP-1440: clean up coverity warningsDave Barach1-3/+5
2018-09-24nsim: fix multiple definitions of nsim_nodeDamjan Marion2-3/+1
2018-09-24Network delay simulator pluginDave Barach9-0/+1522
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# Copyright (c) 2020 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::1
   - Destination IP address range: 2001:2::0 - 2001:2::F:423F
 - Direction 1 --> 0:
   - Source IP address range:      2001:2::1
   - Destination IP address range: 2001:1::0 - 2001:1::F:423F
"""

from trex.stl.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 = u"2001:1::1"
        self.p1_dst_start_ip = u"2001:2::0"
        self.p1_dst_end_ip = u"2001:2::F:423F"

        self.p2_src_start_ip = u"2001:2::1"
        self.p2_dst_start_ip = u"2001:1::0"
        self.p2_dst_end_ip = u"2001:1::F:423F"

    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_dst_start_ip,
            self.p1_dst_end_ip
        )
        base_p2, count_p2 = self._get_start_end_ipv6(
            self.p2_dst_start_ip,
            self.p2_dst_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=u"ipv6_dst",
                    min_value=base_p1,
                    max_value=base_p1 + count_p1,
                    size=8,
                    op=u"inc"
                ),
                STLVmWrFlowVar(
                    fv_name=u"ipv6_dst",
                    pkt_offset=u"IPv6.dst",
                    offset_fixup=8
                )
            ]
        )
        # Direction 1 --> 0
        vm2 = STLScVmRaw(
            [
                STLVmFlowVar(
                    name=u"ipv6_dst",
                    min_value=base_p2,
                    max_value=base_p2 + count_p2,
                    size=8,
                    op=u"inc"
                ),
                STLVmWrFlowVar(
                    fv_name=u"ipv6_dst",
                    pkt_offset=u"IPv6.dst",
                    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()