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#!/router/bin/python
from .stl_general_test import CStlGeneral_Test, CTRexScenario
from trex_stl_lib.api import *
import os, sys
class STLRX_Test(CStlGeneral_Test):
"""Tests for RX feature"""
def setUp(self):
if self.is_virt_nics:
self.skip('Skip this for virtual NICs for now')
per_driver_params = {"rte_vmxnet3_pmd": [1, 50], "rte_ixgbe_pmd": [30, 5000], "rte_i40e_pmd": [80, 5000, 25],
"rte_igb_pmd": [80, 500], "rte_em_pmd": [1, 50], "rte_virtio_pmd": [1, 50]}
CStlGeneral_Test.setUp(self)
assert 'bi' in CTRexScenario.stl_ports_map
self.c = CTRexScenario.stl_trex
self.tx_port, self.rx_port = CTRexScenario.stl_ports_map['bi'][0]
port_info = self.c.get_port_info(ports = self.rx_port)[0]
cap = port_info['rx']['caps']
if "flow_stats" not in cap or "latency" not in cap:
self.skip('port {0} does not support RX'.format(self.rx_port))
self.cap = cap
self.rate_percent = per_driver_params[port_info['driver']][0]
self.total_pkts = per_driver_params[port_info['driver']][1]
if len(per_driver_params[port_info['driver']]) > 2:
self.rate_lat = per_driver_params[port_info['driver']][2]
else:
self.rate_lat = self.rate_percent
self.drops_expected = False
self.c.reset(ports = [self.tx_port, self.rx_port])
self.pkt = STLPktBuilder(pkt = Ether()/IP(src="16.0.0.1",dst="48.0.0.1")/UDP(dport=12,sport=1025)/('Your_paylaod_comes_here'))
self.large_pkt = STLPktBuilder(pkt = Ether()/IP(src="16.0.0.1",dst="48.0.0.1")/UDP(dport=12,sport=1025)/('a'*1000))
@classmethod
def tearDownClass(cls):
# connect back at end of tests
if not cls.is_connected():
CTRexScenario.stl_trex.connect()
def __verify_flow (self, pg_id, total_pkts, pkt_len, stats):
flow_stats = stats['flow_stats'].get(pg_id)
latency_stats = stats['latency'].get(pg_id)
if not flow_stats:
assert False, "no flow stats available"
tx_pkts = flow_stats['tx_pkts'].get(self.tx_port, 0)
tx_bytes = flow_stats['tx_bytes'].get(self.tx_port, 0)
rx_pkts = flow_stats['rx_pkts'].get(self.rx_port, 0)
if latency_stats is not None:
drops = latency_stats['err_cntrs']['dropped']
ooo = latency_stats['err_cntrs']['out_of_order']
dup = latency_stats['err_cntrs']['dup']
sth = latency_stats['err_cntrs']['seq_too_high']
stl = latency_stats['err_cntrs']['seq_too_low']
lat = latency_stats['latency']
if ooo != 0 or dup != 0 or sth != 0:
pprint.pprint(latency_stats)
tmp='Error packets - dropped:{0}, ooo:{1} dup:{2} seq too high:{3} seq too low:{4}'.format(drops, ooo, dup, sth, stl)
assert False, tmp
if (drops != 0 or stl != 0) and not self.drops_expected:
pprint.pprint(latency_stats)
tmp='Error packets - dropped:{0}, ooo:{1} dup:{2} seq too high:{3} seq too low:{4}'.format(drops, ooo, dup, sth, stl)
assert False, tmp
if tx_pkts != total_pkts:
pprint.pprint(flow_stats)
tmp = 'TX pkts mismatch - got: {0}, expected: {1}'.format(tx_pkts, total_pkts)
assert False, tmp
if tx_bytes != (total_pkts * pkt_len):
pprint.pprint(flow_stats)
tmp = 'TX bytes mismatch - got: {0}, expected: {1}'.format(tx_bytes, (total_pkts * pkt_len))
assert False, tmp
if rx_pkts != total_pkts and not self.drops_expected:
pprint.pprint(flow_stats)
tmp = 'RX pkts mismatch - got: {0}, expected: {1}'.format(rx_pkts, total_pkts)
assert False, tmp
if "rx_bytes" in self.cap:
rx_bytes = flow_stats['rx_bytes'].get(self.rx_port, 0)
if rx_bytes != (total_pkts * pkt_len) and not self.drops_expected:
pprint.pprint(flow_stats)
tmp = 'RX bytes mismatch - got: {0}, expected: {1}'.format(rx_bytes, (total_pkts * pkt_len))
assert False, tmp
# RX itreation
def __rx_iteration (self, exp_list):
self.c.clear_stats()
self.c.start(ports = [self.tx_port])
self.c.wait_on_traffic(ports = [self.tx_port])
stats = self.c.get_stats()
for exp in exp_list:
self.__verify_flow(exp['pg_id'], exp['total_pkts'], exp['pkt_len'], stats)
# one simple stream on TX --> RX
def test_one_stream(self):
total_pkts = self.total_pkts * 10
try:
s1 = STLStream(name = 'rx',
packet = self.pkt,
flow_stats = STLFlowLatencyStats(pg_id = 5),
mode = STLTXSingleBurst(total_pkts = total_pkts,
percentage = self.rate_percent
))
# add both streams to ports
self.c.add_streams([s1], ports = [self.tx_port])
print("\ninjecting {0} packets on port {1}\n".format(total_pkts, self.tx_port))
exp = {'pg_id': 5, 'total_pkts': total_pkts, 'pkt_len': self.pkt.get_pkt_len()}
self.__rx_iteration( [exp] )
except STLError as e:
assert False , '{0}'.format(e)
# one simple stream on TX --> RX
def test_multiple_streams(self):
num_latency_streams = 128
num_flow_stat_streams = 127
total_pkts = int(self.total_pkts / (num_latency_streams + num_flow_stat_streams))
if total_pkts == 0:
total_pkts = 1
percent = float(self.rate_percent) / (num_latency_streams + num_flow_stat_streams)
try:
streams = []
exp = []
# 10 identical streams
for pg_id in range(1, num_latency_streams):
streams.append(STLStream(name = 'rx {0}'.format(pg_id),
packet = self.pkt,
flow_stats = STLFlowLatencyStats(pg_id = pg_id),
mode = STLTXSingleBurst(total_pkts = total_pkts+pg_id, percentage = percent)))
exp.append({'pg_id': pg_id, 'total_pkts': total_pkts+pg_id, 'pkt_len': self.pkt.get_pkt_len()})
for pg_id in range(num_latency_streams + 1, num_latency_streams + num_flow_stat_streams):
streams.append(STLStream(name = 'rx {0}'.format(pg_id),
packet = self.pkt,
flow_stats = STLFlowStats(pg_id = pg_id),
mode = STLTXSingleBurst(total_pkts = total_pkts+pg_id, percentage = percent)))
exp.append({'pg_id': pg_id, 'total_pkts': total_pkts+pg_id, 'pkt_len': self.pkt.get_pkt_len()})
# add both streams to ports
self.c.add_streams(streams, ports = [self.tx_port])
self.__rx_iteration(exp)
except STLError as e:
assert False , '{0}'.format(e)
def test_1_stream_many_iterations (self):
total_pkts = self.total_pkts
try:
s1 = STLStream(name = 'rx',
packet = self.pkt,
flow_stats = STLFlowLatencyStats(pg_id = 5),
mode = STLTXSingleBurst(total_pkts = total_pkts,
percentage = self.rate_percent
))
# add both streams to ports
self.c.add_streams([s1], ports = [self.tx_port])
print("\ninjecting {0} packets on port {1}\n".format(total_pkts, self.tx_port))
exp = {'pg_id': 5, 'total_pkts': total_pkts, 'pkt_len': self.pkt.get_pkt_len()}
for i in range(0, 10):
print("starting iteration {0}".format(i))
self.__rx_iteration( [exp] )
except STLError as e:
assert False , '{0}'.format(e)
# this test adds more and more latency streams and re-test with incremental
# test does not work yet
def test_incremental_latency_streams (self):
total_pkts = self.total_pkts
percent = 0.5
try:
# We run till maximum streams allowed. At some point, expecting drops, because rate is too high.
# then run with less streams again, to see that system is still working.
for num_iter in [128, 5]:
exp = []
for i in range(1, num_iter):
# mix small and large packets
if i % 2 != 0:
my_pkt = self.pkt
else:
my_pkt = self.large_pkt
s1 = STLStream(name = 'rx',
packet = my_pkt,
flow_stats = STLFlowLatencyStats(pg_id = i),
mode = STLTXSingleBurst(total_pkts = total_pkts,
percentage = percent
))
# add both streams to ports
self.c.add_streams([s1], ports = [self.tx_port])
total_percent = i * percent
if total_percent > self.rate_lat:
self.drops_expected = True
else:
self.drops_expected = False
print("port {0} : {1} streams at {2}% of line rate\n".format(self.tx_port, i, total_percent))
exp.append({'pg_id': i, 'total_pkts': total_pkts, 'pkt_len': my_pkt.get_pkt_len()})
self.__rx_iteration( exp )
self.c.remove_all_streams(ports = [self.tx_port])
except STLError as e:
assert False , '{0}'.format(e)
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