T-REX: startup config generation

- T-rex startup config generated based on computed path
- move t-rex tooling to t-rex directory

Change-Id: I3ac698f41f98934bcce4af35dc3a755a8948e887
Signed-off-by: Miroslav Miklus <mmiklus@cisco.com>

1 files changed, 262 insertions, 0 deletions

diff --git a/resources/tools/t-rex/t-rex-stateless.py b/resources/tools/t-rex/t-rex-stateless.py
new file mode 100755
index 0000000000..eacf4b8d18
--- /dev/null
+++ b/resources/tools/t-rex/t-rex-stateless.py
@@ -0,0 +1,262 @@
+#!/usr/bin/python
+
+# Copyright (c) 2016 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.
+
+"""This script uses T-REX stateless API to drive t-rex instance.
+
+Requirements:
+- 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
+- 2 interfaces must be configured in configuretion file /etc/trex_cfg.yaml
+
+##################### Example of /etc/trex_cfg.yaml ##########################
+- 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 
+          - 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
+            src_mac         :   [0x90,0xe2,0xba,0x1f,0x97,0xd5]
+##############################################################################
+
+Functionality:
+1. Configure traffic on running T-REX instance
+2. Clear statistics on all ports
+3. Ctart traffic with specified duration
+4. Print statistics to stdout
+
+"""
+
+
+import sys, getopt
+sys.path.insert(0, "/opt/trex-core-1.91/scripts/automation/trex_control_plane/stl/")
+
+from trex_stl_lib.api import *
+
+import dpkt
+import json
+import string
+
+def generate_payload(length):
+    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"
+        sys.exit(2)
+
+    fsize_no_fcs = frame_size - 4 # no FCS
+
+    #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']
+
+    base_pkt_a = Ether()/IP(src=p1_src_start_ip, dst=p1_dst_start_ip)
+    base_pkt_b = Ether()/IP(src=p2_src_start_ip, dst=p2_dst_start_ip)
+
+    vm1 = CTRexScRaw([STLVmTupleGen(ip_min=p1_src_start_ip, ip_max=p1_src_end_ip,
+                                    name="tuple"), # define tuple gen
+
+                      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
+ 
+    vm2 = CTRexScRaw([STLVmTupleGen(ip_min=p2_src_start_ip, ip_max=p2_src_end_ip,
+                                    name="tuple"), # define tuple gen
+
+                      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
+
+    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)
+
+    return(pkt_a, pkt_b)
+
+def simple_burst(pkt_a, pkt_b, duration=10, rate="1mpps",
+                 warmup=True, warmup_time=5):
+
+    # create client
+    c = STLClient()
+    passed = True
+
+    try:
+        # turn this on for some information
+        #c.set_verbose("high")
+
+        # create two streams
+        s1 = STLStream(packet=pkt_a,
+                       mode=STLTXCont(pps=100))
+
+        # second stream with a phase of 10ns (inter stream gap)
+        s2 = STLStream(packet=pkt_b,
+                       isg=10.0,
+                       mode=STLTXCont(pps=100))
+
+
+        # connect to server
+        c.connect()
+
+        # prepare our ports (my machine has 0 <--> 1 with static route)
+        c.reset(ports=[0, 1])
+
+        # add both streams to ports
+        c.add_streams(s1, ports=[0])
+        c.add_streams(s2, ports=[1])
+
+        #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)
+            lost_a = stats[0]["opackets"] - stats[1]["ipackets"]
+            lost_b = stats[1]["opackets"] - stats[0]["ipackets"]
+
+            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()
+
+        # choose rate and start traffic
+        c.start(ports=[0, 1], mult=rate, duration=duration)
+
+        # block until done
+        c.wait_on_traffic(ports=[0, 1])
+
+        # read the stats after the test
+        stats = c.get_stats()
+
+        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"]
+
+        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)
+
+        if (lost_a == 0) and (lost_b == 0):
+            passed = True
+        else:
+            passed = False
+
+    except STLError as e:
+        passed = False
+        print e
+
+    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'
+    _traffic_options = {}
+
+    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)
+
+    pkt_a, pkt_b = create_packets(_traffic_options,
+                                  frame_size=_frame_size)
+
+    simple_burst(pkt_a, pkt_b, duration=_duration, rate=_rate)
+
+if __name__ == "__main__":
+    main(sys.argv[1:])
+