CSIT-342 Update T-rex version to v2.07
[csit.git] / resources / tools / t-rex / t-rex-stateless.py
index 6c53794..455ecef 100755 (executable)
@@ -16,7 +16,7 @@
 """This script uses T-REX stateless API to drive t-rex instance.
 
 Requirements:
-- T-REX: https://github.com/cisco-system-traffic-generator/trex-core 
+- T-REX: https://github.com/cisco-system-traffic-generator/trex-core
  - compiled and running T-REX process (eg. ./t-rex-64 -i -c 4)
  - trex_stl_lib.api library
 - Script must be executed on a node with T-REX instance
@@ -26,7 +26,7 @@ Requirements:
 - port_limit      : 2 # numbers of ports to use
   version         : 2
   interfaces      : ["84:00.0","84:00.1"] # PCI address of interfaces
-  port_info       :  # set eth mac addr 
+  port_info       :  # set eth mac addr
           - dest_mac        :   [0x90,0xe2,0xba,0x1f,0x97,0xd5]  # port 0
             src_mac         :   [0x90,0xe2,0xba,0x1f,0x97,0xd4]
           - dest_mac        :   [0x90,0xe2,0xba,0x1f,0x97,0xd4]  # port 1
@@ -41,106 +41,350 @@ Functionality:
 
 """
 
+import argparse
+import json
+import socket
+import string
+import struct
+import sys
 
-import sys, getopt
-sys.path.insert(0, "/opt/trex-core-1.91/scripts/automation/trex_control_plane/stl/")
-
+sys.path.insert(0, "/opt/trex-core-2.07/scripts/automation/"+\
+                   "trex_control_plane/stl/")
 from trex_stl_lib.api import *
 
-import dpkt
-import json
-import string
+stream_table = {'IMIX_v4_1': [{'size': 64, 'pps': 28, 'isg':0},
+                              {'size': 570, 'pps': 16, 'isg':0.1},
+                              {'size': 1518, 'pps': 4, 'isg':0.2}]
+               }
 
 def generate_payload(length):
+    """Generate payload.
+
+    :param length: Length of payload.
+    :type length: int
+    :return: Payload filled with chars.
+    :rtype string
+    """
+
     word = ''
     alphabet_size = len(string.letters)
     for i in range(length):
         word += string.letters[(i % alphabet_size)]
+
     return word
 
-def create_packets(traffic_options, frame_size=64):
 
-    if frame_size < 64:
-        print "Packet min. size is 64B"
+def get_start_end_ipv6(start_ip, end_ip):
+    """Get start and end host from IPv6 as integer.
+
+    :param start_ip: Start IPv6.
+    :param end_ip: End IPv6.
+    :type start_ip: string
+    :type end_ip: string
+    :return: Start host, end host.
+    :rtype int
+    """
+
+    try:
+        ip1 = socket.inet_pton(socket.AF_INET6, start_ip)
+        ip2 = socket.inet_pton(socket.AF_INET6, end_ip)
+
+        hi1, lo1 = struct.unpack('!QQ', ip1)
+        hi2, lo2 = struct.unpack('!QQ', ip2)
+
+        if ((hi1 << 64) | lo1) > ((hi2 << 64) | lo2):
+            print "IPv6: start_ip is greater then end_ip"
+            sys.exit(2)
+
+        max_p1 = abs(int(lo1) - int(lo2))
+        base_p1 = lo1
+    except AddressValueError as ex_error:
+        print ex_error
         sys.exit(2)
 
-    fsize_no_fcs = frame_size - 4 # no FCS
+    return base_p1, max_p1
+
+def create_streams_v46(base_pkt_a, base_pkt_b, vm1, vm2, frame_size):
+    """Create STLStream streams
+
+    :param base_pkt_a: Base packet a for stream_a
+    :param base_pkt_b: Base packet b for stream_b
+    :param vm1: vm for stream_a
+    :param vm2: vm for stream_b
+    :param frame_size: frame size or name of traffic profile
+    :type base_pkt_a: Eth (scapy)
+    :type base_pkt_b: Eth (scapy)
+    :type vm1: STLScVmRaw
+    :type vm2: STLScVmRaw
+    :frame_size: int or string
+    :return: stream_a, stream_b, stream_a_latency, stream_b_latency
+    :rtype: STLStream, STLStream, STLStream, STLStream
+    """
+
+    if type(frame_size) is int:
+
+        fsize_no_fcs = frame_size - 4 # no FCS
+        pkt_a = STLPktBuilder(pkt=base_pkt_a/generate_payload(
+            max(0, fsize_no_fcs-len(base_pkt_a))), vm=vm1)
+        pkt_b = STLPktBuilder(pkt=base_pkt_b/generate_payload(
+            max(0, fsize_no_fcs-len(base_pkt_b))), vm=vm2)
+        pkt_lat_a = STLPktBuilder(pkt=base_pkt_a/generate_payload(
+            max(0, fsize_no_fcs-len(base_pkt_a))))
+        pkt_lat_b = STLPktBuilder(pkt=base_pkt_b/generate_payload(
+            max(0, fsize_no_fcs-len(base_pkt_b))))
+        lat_stream1 = STLStream(packet=pkt_lat_a,
+                                flow_stats=STLFlowLatencyStats(pg_id=0),
+                                mode=STLTXCont(pps=1000))
+        # second traffic stream with a phase of 10ns (inter stream gap)
+        lat_stream2 = STLStream(packet=pkt_lat_b,
+                                isg=10.0,
+                                flow_stats=STLFlowLatencyStats(pg_id=1),
+                                mode=STLTXCont(pps=1000))
+
+        stream1 = STLStream(packet=pkt_a,
+                            mode=STLTXCont(pps=1000))
+        # second traffic stream with a phase of 10ns (inter stream gap)
+        stream2 = STLStream(packet=pkt_b,
+                            isg=10.0,
+                            mode=STLTXCont(pps=1000))
+    elif type(frame_size) is str:
+        lat_stream1 = []
+        lat_stream2 = []
+        stream1 = []
+        stream2 = []
+
+        for x in stream_table[frame_size]:
+            fsize_no_fcs = x['size'] - 4 # no FCS
+            pkt_a = STLPktBuilder(pkt=base_pkt_a/generate_payload(
+                max(0, fsize_no_fcs-len(base_pkt_a))), vm=vm1)
+            pkt_b = STLPktBuilder(pkt=base_pkt_b/generate_payload(
+                max(0, fsize_no_fcs-len(base_pkt_b))), vm=vm2)
+
+            stream1.append(STLStream(packet=pkt_a,
+                               isg=x['isg'],
+                               mode=STLTXCont(pps=x['pps'])))
+            stream2.append(STLStream(packet=pkt_b,
+                               isg=x['isg'],
+                               mode=STLTXCont(pps=x['pps'])))
+
+    else:
+        raise ValueError("Unknown frame_size type")
+
+    return (stream1, stream2, lat_stream1, lat_stream2)
+
+def create_streams(traffic_options, frame_size=64):
+    """Create two IP packets to be used in stream.
+
+    :param traffic_options: Parameters for packets.
+    :param frame_size: Size of L2 frame.
+    :type traffic_options: list
+    :type frame_size: int
+    :return: Packet instances.
+    :rtype: Tuple of STLPktBuilder
+    """
+
+    if type(frame_size) is int and frame_size < 64:
+        print_error("Frame min. size is 64B")
+        sys.exit(1)
 
-    #p1_src_mac = traffic_options['p1_src_mac']
-    #p1_dst_mac = traffic_options['p1_dst_mac']
     p1_src_start_ip = traffic_options['p1_src_start_ip']
     p1_src_end_ip = traffic_options['p1_src_end_ip']
     p1_dst_start_ip = traffic_options['p1_dst_start_ip']
-    #p1_dst_end_ip = traffic_options['p1_dst_end_ip']
-    #p2_src_mac = traffic_options['p2_src_mac']
-    #p2_dst_mac = traffic_options['p2_dst_mac']
     p2_src_start_ip = traffic_options['p2_src_start_ip']
     p2_src_end_ip = traffic_options['p2_src_end_ip']
     p2_dst_start_ip = traffic_options['p2_dst_start_ip']
-    #p2_dst_end_ip = traffic_options['p2_dst_end_ip']
+
+    p1_dst_end_ip = traffic_options['p1_dst_end_ip']
+    p2_dst_end_ip = traffic_options['p2_dst_end_ip']
 
     base_pkt_a = Ether()/IP(src=p1_src_start_ip, dst=p1_dst_start_ip, proto=61)
     base_pkt_b = Ether()/IP(src=p2_src_start_ip, dst=p2_dst_start_ip, proto=61)
 
-    vm1 = CTRexScRaw([STLVmTupleGen(ip_min=p1_src_start_ip, ip_max=p1_src_end_ip,
-                                    name="tuple"), # define tuple gen
+    # The following code applies raw instructions to packet (IP src/dst
+    # increment). It splits the generated traffic by "ip_src"/"ip_dst" variable
+    # to cores and fix IPv4 header checksum.
+    if p1_dst_end_ip and p2_dst_end_ip:
+        vm1 = STLScVmRaw([STLVmFlowVar(name="dst",
+                                       min_value=p1_dst_start_ip,
+                                       max_value=p1_dst_end_ip,
+                                       size=4, op="inc"),
+                          STLVmWrFlowVar(fv_name="dst", pkt_offset="IP.dst"),
+                          STLVmFixIpv4(offset="IP"),
+                         ], split_by_field="dst")
+        vm2 = STLScVmRaw([STLVmFlowVar(name="dst",
+                                       min_value=p2_dst_start_ip,
+                                       max_value=p2_dst_end_ip,
+                                       size=4, op="inc"),
+                          STLVmWrFlowVar(fv_name="dst", pkt_offset="IP.dst"),
+                          STLVmFixIpv4(offset="IP"),
+                         ], split_by_field="dst")
+    else:
+        vm1 = STLScVmRaw([STLVmFlowVar(name="src",
+                                       min_value=p1_src_start_ip,
+                                       max_value=p1_src_end_ip,
+                                       size=4, op="inc"),
+                          STLVmWrFlowVar(fv_name="src", pkt_offset="IP.src"),
+                          STLVmFixIpv4(offset="IP"),
+                         ], split_by_field="src")
+        vm2 = STLScVmRaw([STLVmFlowVar(name="src",
+                                       min_value=p2_src_start_ip,
+                                       max_value=p2_src_end_ip,
+                                       size=4, op="inc"),
+                          STLVmWrFlowVar(fv_name="src", pkt_offset="IP.src"),
+                          STLVmFixIpv4(offset="IP"),
+                         ], split_by_field="src")
+
+    return create_streams_v46(base_pkt_a, base_pkt_b, vm1, vm2, frame_size)
+
+
+def create_streams_v6(traffic_options, frame_size=78):
+    """Create two IPv6 packets to be used in stream.
+
+    :param traffic_options: Parameters for packets.
+    :param frame_size: Size of L2 frame.
+    :type traffic_options: List
+    :type frame_size: int
+    :return: Packet instances.
+    :rtype: Tuple of STLPktBuilder
+    """
+
+    if type(frame_size) is int and frame_size < 78:
+        print_error("Frame min. size is 78B")
+        sys.exit(2)
 
-                      STLVmWrFlowVar(fv_name="tuple.ip", pkt_offset="IP.src"), # write ip to packet IP.src
-                      STLVmFixIpv4(offset="IP"),                               # fix checksum
-                     ]
-                     , split_by_field="tuple") # split to cores base on the tuple generator
+    p1_src_start_ip = traffic_options['p1_src_start_ip']
+    p1_src_end_ip = traffic_options['p1_src_end_ip']
+    p1_dst_start_ip = traffic_options['p1_dst_start_ip']
+    p2_src_start_ip = traffic_options['p2_src_start_ip']
+    p2_src_end_ip = traffic_options['p2_src_end_ip']
+    p2_dst_start_ip = traffic_options['p2_dst_start_ip']
 
-    vm2 = CTRexScRaw([STLVmTupleGen(ip_min=p2_src_start_ip, ip_max=p2_src_end_ip,
-                                    name="tuple"), # define tuple gen
+    p1_dst_end_ip = traffic_options['p1_dst_end_ip']
+    p2_dst_end_ip = traffic_options['p2_dst_end_ip']
+
+    base_pkt_a = Ether()/IPv6(src=p1_src_start_ip, dst=p1_dst_start_ip)
+    base_pkt_b = Ether()/IPv6(src=p2_src_start_ip, dst=p2_dst_start_ip)
+
+    # The following code applies raw instructions to packet (IP src/dst
+    # increment). It splits the generated traffic by "ip_src"/"ip_dst" variable
+    # to cores.
+    if p1_dst_end_ip and p2_dst_end_ip:
+        base_p1, max_p1 = get_start_end_ipv6(p1_dst_start_ip, p1_dst_end_ip)
+        base_p2, max_p2 = get_start_end_ipv6(p2_dst_start_ip, p2_dst_end_ip)
+
+        vm1 = STLScVmRaw([STLVmFlowVar(name="ipv6_dst",
+                                       min_value=base_p1,
+                                       max_value=max_p1+base_p1,
+                                       size=8, op="inc"),
+                          STLVmWrFlowVar(fv_name="ipv6_dst",
+                                         pkt_offset="IPv6.dst",
+                                         offset_fixup=8)
+                         ]
+                         , split_by_field="ipv6_dst")
+        vm2 = STLScVmRaw([STLVmFlowVar(name="ipv6_dst",
+                                       min_value=base_p2,
+                                       max_value=max_p2+base_p2,
+                                       size=8, op="inc"),
+                          STLVmWrFlowVar(fv_name="ipv6_dst",
+                                         pkt_offset="IPv6.dst",
+                                         offset_fixup=8)
+                         ]
+                         , split_by_field="ipv6_dst")
+    else:
+        base_p1, max_p1 = get_start_end_ipv6(p1_src_start_ip, p1_src_end_ip)
+        base_p2, max_p2 = get_start_end_ipv6(p2_src_start_ip, p2_src_end_ip)
+
+        vm1 = STLScVmRaw([STLVmFlowVar(name="ipv6_src",
+                                       min_value=base_p1,
+                                       max_value=max_p1+base_p1,
+                                       size=8, op="inc"),
+                          STLVmWrFlowVar(fv_name="ipv6_src",
+                                         pkt_offset="IPv6.src",
+                                         offset_fixup=8)
+                         ]
+                         , split_by_field="ipv6_src")
+        vm2 = STLScVmRaw([STLVmFlowVar(name="ipv6_src",
+                                       min_value=base_p2,
+                                       max_value=max_p2+base_p2,
+                                       size=8, op="inc"),
+                          STLVmWrFlowVar(fv_name="ipv6_src",
+                                         pkt_offset="IPv6.src",
+                                         offset_fixup=8)
+                         ]
+                         , split_by_field="ipv6_src")
+
+    return create_streams_v46(base_pkt_a, base_pkt_b, vm1, vm2, frame_size)
+
+def simple_burst(stream_a, stream_b, stream_lat_a, stream_lat_b, duration, rate,
+                 warmup_time, async_start, latency):
+    """Run the traffic with specific parameters.
+
+    :param pkt_a: Base packet for stream 1.
+    :param pkt_b: Base packet for stream 2.
+    :param pkt_lat_a: Base packet for latency stream 1.
+    :param pkt_lat_b: Base packet for latency stream 2.
+    :param duration: Duration of traffic run in seconds (-1=infinite).
+    :param rate: Rate of traffic run [percentage, pps, bps].
+    :param warmup_time: Warm up duration.
+    :param async_start: Start the traffic and exit.
+    :param latency: With latency stats.
+    :type pkt_a: STLPktBuilder
+    :type pkt_b: STLPktBuilder
+    :type pkt_lat_a: STLPktBuilder
+    :type pkt_lat_b: STLPktBuilder
+    :type duration: int
+    :type rate: string
+    :type warmup_time: int
+    :type async_start: bool
+    :type latency: bool
+    :return: nothing
+    """
 
-                      STLVmWrFlowVar(fv_name="tuple.ip", pkt_offset="IP.src"), # write ip to packet IP.src
-                      STLVmFixIpv4(offset="IP"),                               # fix checksum
-                     ]
-                     , split_by_field="tuple") # split to cores base on the tuple generator
+    # create client
+    client = STLClient()
 
-    pkt_a = STLPktBuilder(pkt=base_pkt_a/generate_payload(fsize_no_fcs-len(base_pkt_a)), vm=vm1)
-    pkt_b = STLPktBuilder(pkt=base_pkt_b/generate_payload(fsize_no_fcs-len(base_pkt_b)), vm=vm2)
+    total_rcvd = 0
+    total_sent = 0
+    lost_a = 0
+    lost_b = 0
+    lat_a = 'NA'
+    lat_b = 'NA'
 
-    return(pkt_a, pkt_b)
+    try:
+        # turn this off if too many logs
+        #client.set_verbose("high")
 
-def simple_burst(pkt_a, pkt_b, duration=10, rate="1mpps",
-                 warmup=True, warmup_time=5):
+        # connect to server
+        client.connect()
 
-    # create client
-    c = STLClient()
-    passed = True
+        # prepare our ports (my machine has 0 <--> 1 with static route)
+        client.reset(ports=[0, 1])
 
-    try:
-        # turn this on for some information
-        #c.set_verbose("high")
+        client.add_streams(stream_a, ports=[0])
+        client.add_streams(stream_b, ports=[1])
 
-        # create two streams
-        s1 = STLStream(packet=pkt_a,
-                       mode=STLTXCont(pps=100))
+        if latency:
+            client.add_streams(stream_lat_a, ports=[0])
+            client.add_streams(stream_lat_b, ports=[1])
 
-        # second stream with a phase of 10ns (inter stream gap)
-        s2 = STLStream(packet=pkt_b,
-                       isg=10.0,
-                       mode=STLTXCont(pps=100))
+        #warmup phase
+        if warmup_time > 0:
+            # clear the stats before injecting
+            client.clear_stats()
 
+            # choose rate and start traffic
+            client.start(ports=[0, 1], mult=rate, duration=warmup_time)
 
-        # connect to server
-        c.connect()
+            # block until done
+            client.wait_on_traffic(ports=[0, 1], timeout=(warmup_time+30))
 
-        # prepare our ports (my machine has 0 <--> 1 with static route)
-        c.reset(ports=[0, 1])
+            if client.get_warnings():
+                for warning in client.get_warnings():
+                    print_error(warning)
 
-        # add both streams to ports
-        c.add_streams(s1, ports=[0])
-        c.add_streams(s2, ports=[1])
+            # read the stats after the test
+            stats = client.get_stats()
 
-        #warmup phase
-        if warmup == True:
-            c.clear_stats()
-            c.start(ports=[0, 1], mult=rate, duration=warmup_time)
-            c.wait_on_traffic(ports=[0, 1])
-            stats = c.get_stats()
-            print stats
             print "#####warmup statistics#####"
             print json.dumps(stats, indent=4,
                              separators=(',', ': '), sort_keys=True)
@@ -150,113 +394,166 @@ def simple_burst(pkt_a, pkt_b, duration=10, rate="1mpps",
             print "\npackets lost from 0 --> 1:   {0} pkts".format(lost_a)
             print "packets lost from 1 --> 0:   {0} pkts".format(lost_b)
 
-
         # clear the stats before injecting
-        c.clear_stats()
+        client.clear_stats()
+        lost_a = 0
+        lost_b = 0
 
         # choose rate and start traffic
-        c.start(ports=[0, 1], mult=rate, duration=duration)
+        client.start(ports=[0, 1], mult=rate, duration=duration)
 
-        # block until done
-        c.wait_on_traffic(ports=[0, 1])
+        if not async_start:
+            # block until done
+            client.wait_on_traffic(ports=[0, 1], timeout=(duration+30))
 
-        # read the stats after the test
-        stats = c.get_stats()
+            if client.get_warnings():
+                for warning in client.get_warnings():
+                    print_error(warning)
 
-        print "#####statistics#####"
-        print json.dumps(stats, indent=4,
-                         separators=(',', ': '), sort_keys=True)
+            # read the stats after the test
+            stats = client.get_stats()
 
-        lost_a = stats[0]["opackets"] - stats[1]["ipackets"]
-        lost_b = stats[1]["opackets"] - stats[0]["ipackets"]
+            print "#####statistics#####"
+            print json.dumps(stats, indent=4,
+                             separators=(',', ': '), sort_keys=True)
+            lost_a = stats[0]["opackets"] - stats[1]["ipackets"]
+            lost_b = stats[1]["opackets"] - stats[0]["ipackets"]
 
-        total_sent = stats[0]["opackets"] + stats[1]["opackets"]
-        total_rcvd = stats[0]["ipackets"] + stats[1]["ipackets"]
+            if latency:
+                lat_a = "/".join((\
+                    str(stats["latency"][0]["latency"]["total_min"]),\
+                    str(stats["latency"][0]["latency"]["average"]),\
+                    str(stats["latency"][0]["latency"]["total_max"])))
+                lat_b = "/".join((\
+                    str(stats["latency"][1]["latency"]["total_min"]),\
+                    str(stats["latency"][1]["latency"]["average"]),\
+                    str(stats["latency"][1]["latency"]["total_max"])))
 
-        print "\npackets lost from 0 --> 1:   {0} pkts".format(lost_a)
-        print "packets lost from 1 --> 0:   {0} pkts".format(lost_b)
-        print "rate={0}, totalReceived={1}, totalSent={2}, frameLoss={3}"\
-              .format(rate, total_rcvd, total_sent, lost_a+lost_b)
+            total_sent = stats[0]["opackets"] + stats[1]["opackets"]
+            total_rcvd = stats[0]["ipackets"] + stats[1]["ipackets"]
 
-        if (lost_a == 0) and (lost_b == 0):
-            passed = True
-        else:
-            passed = False
+            print "\npackets lost from 0 --> 1:   {0} pkts".format(lost_a)
+            print "packets lost from 1 --> 0:   {0} pkts".format(lost_b)
 
-    except STLError as e:
-        passed = False
-        print e
+    except STLError as ex_error:
+        print_error(str(ex_error))
+        sys.exit(1)
 
     finally:
-        c.disconnect()
-
-def print_help():
-
-    print "args: [-h] -d <duration> -s <size of frame in bytes>"+\
-    " [-r] <traffic rate with unit: %, mpps> "+\
-    "--p1_src_mac <port1_src_mac> "+\
-    "--p1_dst_mac <port1_dst_mac> "+\
-    "--p1_src_start_ip <port1_src_start_ip> "+\
-    "--p1_src_end_ip <port1_src_end_ip> "+\
-    "--p1_dst_start_ip <port1_dst_start_ip> "+\
-    "--p1_dst_end_ip <port1_dst_end_ip> "+\
-    "--p2_src_mac <port2_src_mac> "+\
-    "--p2_dst_mac <port2_dst_mac> "+\
-    "--p2_src_start_ip <port2_src_start_ip> "+\
-    "--p2_src_end_ip <port2_src_end_ip> "+\
-    "--p2_dst_start_ip <port2_dst_start_ip> "+\
-    "--p2_dst_end_ip <port2_dst_end_ip>"
-
-
-def main(argv):
-
-    _duration = 10
-    _frame_size = 64
-    _rate = '1mpps'
+        if async_start:
+            client.disconnect(stop_traffic=False, release_ports=True)
+        else:
+            client.disconnect()
+            print "rate={0}, totalReceived={1}, totalSent={2}, "\
+                "frameLoss={3}, latencyStream0(usec)={4}, "\
+                "latencyStream1(usec)={5}".format(rate, total_rcvd,\
+                total_sent, lost_a+lost_b, lat_a, lat_b)
+
+
+def print_error(msg):
+    """Print error message on stderr.
+
+    :param msg: Error message to print.
+    :type msg: string
+    :return: nothing
+    """
+
+    sys.stderr.write(msg+'\n')
+
+
+def parse_args():
+    """Parse arguments from cmd line.
+
+    :return: Parsed arguments.
+    :rtype ArgumentParser
+    """
+
+    parser = argparse.ArgumentParser()
+    parser.add_argument("-d", "--duration", required=True, type=int,
+                        help="Duration of traffic run")
+    parser.add_argument("-s", "--frame_size", required=True,
+                        help="Size of a Frame without padding and IPG")
+    parser.add_argument("-r", "--rate", required=True,
+                        help="Traffic rate with included units (%, pps)")
+    parser.add_argument("-6", "--use_IPv6", action="store_true",
+                        default=False,
+                        help="Use IPv6 traffic profile instead of IPv4")
+    parser.add_argument("--async", action="store_true",
+                        default=False,
+                        help="Non-blocking call of the script")
+    parser.add_argument("--latency", action="store_true",
+                        default=False,
+                        help="Add latency stream")
+    parser.add_argument("-w", "--warmup_time", type=int,
+                        default=5,
+                        help="Traffic warmup time in seconds, 0 = disable")
+#    parser.add_argument("--p1_src_mac",
+#                        help="Port 1 source MAC address")
+#    parser.add_argument("--p1_dst_mac",
+#                        help="Port 1 destination MAC address")
+    parser.add_argument("--p1_src_start_ip", required=True,
+                        help="Port 1 source start IP address")
+    parser.add_argument("--p1_src_end_ip",
+                        default=False,
+                        help="Port 1 source end IP address")
+    parser.add_argument("--p1_dst_start_ip", required=True,
+                        help="Port 1 destination start IP address")
+    parser.add_argument("--p1_dst_end_ip",
+                        default=False,
+                        help="Port 1 destination end IP address")
+#    parser.add_argument("--p2_src_mac",
+#                        help="Port 2 source MAC address")
+#    parser.add_argument("--p2_dst_mac",
+#                        help="Port 2 destination MAC address")
+    parser.add_argument("--p2_src_start_ip", required=True,
+                        help="Port 2 source start IP address")
+    parser.add_argument("--p2_src_end_ip",
+                        default=False,
+                        help="Port 2 source end IP address")
+    parser.add_argument("--p2_dst_start_ip", required=True,
+                        help="Port 2 destination start IP address")
+    parser.add_argument("--p2_dst_end_ip",
+                        default=False,
+                        help="Port 2 destination end IP address")
+
+    return parser.parse_args()
+
+
+def main():
+    """Main function."""
+
+    args = parse_args()
+
+    _duration = args.duration
+    _latency = args.latency
+    if args.frame_size.isdigit():
+        _frame_size = int(args.frame_size)
+    else:
+        _frame_size = args.frame_size
+        _latency = False
+    _rate = args.rate
+    _use_ipv6 = args.use_IPv6
+    _async_call = args.async
+    _warmup_time = args.warmup_time
+
     _traffic_options = {}
+    for attr in [a for a in dir(args) if a.startswith('p')]:
+        if getattr(args, attr) is not None:
+            _traffic_options[attr] = getattr(args, attr)
 
-    try:
-        opts, args = getopt.getopt(argv, "hd:s:r:o:",
-                                   ["help",
-                                    "p1_src_mac=",
-                                    "p1_dst_mac=",
-                                    "p1_src_start_ip=",
-                                    "p1_src_end_ip=",
-                                    "p1_dst_start_ip=",
-                                    "p1_dst_end_ip=",
-                                    "p2_src_mac=",
-                                    "p2_dst_mac=",
-                                    "p2_src_start_ip=",
-                                    "p2_src_end_ip=",
-                                    "p2_dst_start_ip=",
-                                    "p2_dst_end_ip="])
-    except getopt.GetoptError:
-        print_help()
-        sys.exit(2)
-    for opt, arg in opts:
-        if opt in ('-h', "--help"):
-            print_help()
-            sys.exit()
-        elif opt == '-d':
-            _duration = int(arg)
-        elif opt == '-s':
-            _frame_size = int(arg)
-        elif opt == '-r':
-            _rate = arg
-        elif opt.startswith("--p"):
-            _traffic_options[opt[2:]] = arg
-
-    print _traffic_options
-    if len(_traffic_options) != 6:
-        print "Supported only: src_start_ip, src_end_ip, dst_start_ip"
-        print_help()
-        sys.exit(2)
+    if _use_ipv6:
+        # WARNING: Trex limitation to IPv4 only. IPv6 is not yet supported.
+        print_error('IPv6 latency is not supported yet. Running without lat.')
+        _latency = False
 
-    pkt_a, pkt_b = create_packets(_traffic_options,
-                                  frame_size=_frame_size)
+        stream_a, stream_b, stream_lat_a, stream_lat_b = create_streams_v6(
+            _traffic_options, frame_size=_frame_size)
+    else:
+        stream_a, stream_b, stream_lat_a, stream_lat_b = create_streams(
+            _traffic_options, frame_size=_frame_size)
 
-    simple_burst(pkt_a, pkt_b, duration=_duration, rate=_rate)
+    simple_burst(stream_a, stream_b, stream_lat_a, stream_lat_b,
+                 _duration, _rate, _warmup_time, _async_call, _latency)
 
 if __name__ == "__main__":
-    main(sys.argv[1:])
-
+    sys.exit(main())