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Diffstat (limited to 'resources/tools/t-rex/t-rex-stateless.py')
| -rwxr-xr-x | resources/tools/t-rex/t-rex-stateless.py | 262 |
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:]) + |