+#!/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 process.
+
+!!! OUTDATED 1.88 T-REX STATELESS API, USE WITH CAUTION !!!
+
+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
+
+"""
+
+
+import sys, getopt
+sys.path.insert(0, "/opt/trex-core-1.88/scripts/api/stl/")
+
+from trex_stl_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)
+
+ # build A side packet
+ pkt_a = STLPktBuilder()
+
+ pkt_a.add_pkt_layer("l2", dpkt.ethernet.Ethernet())
+ pkt_a.add_pkt_layer("l3_ip", dpkt.ip.IP())
+ pkt_a.add_pkt_layer("l4_udp", dpkt.udp.UDP())
+ pkt_a.set_pkt_payload(generate_payload(frame_size -
+ pkt_a.get_packet_length()))
+ pkt_a.set_layer_attr("l3_ip", "len", len(pkt_a.get_layer('l3_ip')))
+
+ # build B side packet
+ pkt_b = pkt_a.clone()
+
+ 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']
+
+ pkt_a.set_eth_layer_addr(layer_name="l2",
+ attr="src",
+ mac_addr=p1_src_mac)
+ pkt_a.set_eth_layer_addr(layer_name="l2",
+ attr="dst",
+ mac_addr=p1_dst_mac)
+ pkt_b.set_eth_layer_addr(layer_name="l2",
+ attr="src",
+ mac_addr=p2_src_mac)
+ pkt_b.set_eth_layer_addr(layer_name="l2",
+ attr="dst",
+ mac_addr=p2_dst_mac)
+
+ # set IP range for pkt and split it by multiple cores
+ pkt_a.set_vm_ip_range(ip_layer_name="l3_ip",
+ ip_field="src",
+ ip_start=p1_src_start_ip, ip_end=p1_src_end_ip,
+ operation="inc",
+ split=True)
+
+ pkt_a.set_vm_ip_range(ip_layer_name="l3_ip",
+ ip_field="dst",
+ ip_start=p1_dst_start_ip, ip_end=p1_dst_end_ip,
+ operation="inc")
+
+
+ # build B side packet
+ pkt_b.set_vm_ip_range(ip_layer_name="l3_ip",
+ ip_field="src",
+ ip_start=p2_src_start_ip, ip_end=p2_src_end_ip,
+ operation="inc",
+ split=True)
+
+ pkt_b.set_vm_ip_range(ip_layer_name="l3_ip",
+ ip_field="dst",
+ ip_start=p2_dst_start_ip, ip_end=p2_dst_end_ip,
+ operation="inc")
+
+ 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 1ms (inter stream gap)
+ s2 = STLStream(packet=pkt_b,
+ isg=1000,
+ 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 "#####warmup statistics#####"
+ print json.dumps(stats["port 0"], indent=4,
+ separators=(',', ': '), sort_keys=True)
+ print json.dumps(stats["port 1"], indent=4,
+ separators=(',', ': '), sort_keys=True)
+ lost_a = stats["port 0"]["opackets"] - stats["port 1"]["ipackets"]
+ lost_b = stats["port 1"]["opackets"] - stats["port 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["port 0"], indent=4,
+ separators=(',', ': '), sort_keys=True)
+ print json.dumps(stats["port 1"], indent=4,
+ separators=(',', ': '), sort_keys=True)
+
+ lost_a = stats["port 0"]["opackets"] - stats["port 1"]["ipackets"]
+ lost_b = stats["port 1"]["opackets"] - stats["port 0"]["ipackets"]
+
+ total_sent = stats["port 0"]["opackets"] + stats["port 1"]["opackets"]
+ total_rcvd = stats["port 0"]["ipackets"] + stats["port 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) != 12:
+ print "Expected all 12 traffic options"
+ 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:])
+
Code Review / csit.git / commitdiff