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# include the path of trex_stl_api.py
import sys
sys.path.insert(0, "../")
from trex_stl_api import *
import dpkt
import time
import json
def simple_burst ():
# 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("somepayload")
pkt_a.set_layer_attr("l3_ip", "len", len(pkt_a.get_layer('l3_ip')))
# build B side packet
pkt_b = pkt_a.clone()
# 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="10.0.0.1", ip_end="10.0.0.254",
operation = "inc",
split = True)
pkt_a.set_vm_ip_range(ip_layer_name = "l3_ip",
ip_field = "dst",
ip_start="8.0.0.1", ip_end="8.0.0.254",
operation = "inc")
# build B side packet
pkt_b.set_vm_ip_range(ip_layer_name = "l3_ip",
ip_field = "src",
ip_start="8.0.0.1", ip_end="8.0.0.254",
operation = "inc",
split = True)
pkt_b.set_vm_ip_range(ip_layer_name = "l3_ip",
ip_field = "dst",
ip_start="10.0.0.1", ip_end="10.0.0.254",
operation = "inc")
# 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])
# clear the stats before injecting
c.clear_stats()
# choose rate and start traffic for 10 seconds on 5 mpps
print "Running 5 Mpps on ports 0, 1 for 10 seconds..."
c.start(ports = [0, 1], mult = "5mpps", duration = 10)
# block until done
c.wait_on_traffic(ports = [0, 1])
# read the stats after the test
stats = c.get_stats()
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)
if (lost_a == 0) and (lost_b == 0):
passed = True
else:
passed = False
except STLError as e:
passed = False
print e
finally:
c.disconnect()
if passed:
print "\nTest has passed :-)\n"
else:
print "\nTest has failed :-(\n"
# run the tests
simple_burst()
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