/*
 * builtinurl.c - skeleton vpp-api-test plug-in
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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 | IP |
 - Direction 0 --> 1:
   - Source MAC address range:     ca:fe:00:00:00:00 - ca:fe:00:01:86:9f
   - Source IP address range:      10.0.0.2 - 10.1.134.161
   - Destination IP address range: 20.0.0.1
 - Direction 1 --> 0:
   - Source MAC address range:     fa:ce:00:00:00:00 - fa:ce:00:01:86:9f
   - Source IP address range:      20.0.0.2 - 20.1.134.161
   - Destination IP address range: 10.0.0.1
"""

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__()

        self.clients = 100000

        # MACs used in packet headers.
        self.p1_src_start_mac = 'ca:fe:00:00:00:00'  # mask: 00:00:FF:FF:FF:FF

        self.p2_src_start_mac = 'fa:ce:00:00:00:00'  # mask: 00:00:FF:FF:FF:FF

        # IPs used in packet headers.
        self.p1_src_start_ip = '10.0.0.2'
        self.p1_src_end_ip = '10.1.134.161'
        self.p1_dst_start_ip = '20.0.0.1'

        self.p2_src_start_ip = '20.0.0.2'
        self.p2_src_end_ip = '20.1.134.161'
        self.p2_dst_start_ip = '10.0.0.1'

    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(src=self.p1_src_start_mac) /
                      IP(src=self.p1_src_start_ip,
                         dst=self.p1_dst_start_ip,
                         proto=61))
        # Direction 1 --> 0
        base_pkt_b = (Ether(src=self.p2_src_start_mac) /
                      IP(src=self.p2_src_start_ip,
                         dst=self.p2_dst_start_ip,
                         proto=61))

        # Direction 0 --> 1
        vm1 = STLScVmRaw([STLVmFlowVar(name="mac_src",
                                       min_value=0,
                                       max_value=self.clients-1,
                                       size=4, op="inc"),
                          STLVmWrFlowVar(fv_name="mac_src", pkt_offset=8),
                          STLVmFlowVar(name="src",
                                       min_value=self.p1_src_start_ip,
                                       max_value=self.p1_src_end_ip,
                                       size=4, op="inc"),
                          STLVmWrFlowVar(fv_name="src", pkt_offset="IP.src"),
                          STLVmFixIpv4(offset="IP")],
                         split_by_field="src")
        # Direction 1 --> 0
        vm2 = STLScVmRaw([STLVmFlowVar(name="mac_src",
                                       min_value=0,
                                       max_value=self.clients-1,
                                       size=4, op="inc"),
                          STLVmWrFlowVar(fv_name="mac_src", pkt_offset=8),
                          STLVmFlowVar(name="src",
                                       min_value=self.p2_src_start_ip,
                                       max_value=self.p2_src_end_ip,
                                       size=4, op="inc"),
                          STLVmWrFlowVar(fv_name="src", pkt_offset="IP.src"),
                          STLVmFixIpv4(offset="IP")],
                         split_by_field="src")

        return base_pkt_a, base_pkt_b, vm1, vm2


def register():
    """Register this traffic profile to T-rex.

    Do not change this function.

    :returns: Traffic streams.
    :rtype: Object
    """
    return TrafficStreams()