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# BSD LICENSE
#
# Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
# * Neither the name of Intel Corporation nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
"""
DPDK Test suite.
Test Layer-2 Forwarding support
"""
import dts
from test_case import TestCase
from plotting import Plotting
from settings import HEADER_SIZE
class TestL2fwd(TestCase):
def plot_results(self):
queues = []
queues_results = []
for test_queues in self.test_queues:
queues.append(str(test_queues['queues']))
results = []
for frame_size in self.frame_sizes:
results.append(test_queues['pct'][frame_size])
queues_results.append(results)
image_path = self.plotting.create_bars_plot(
'test_perf_l2fwd',
'L2fwd, %d ports' % self.number_of_ports,
self.frame_sizes,
queues_results,
ylabel='% linerate',
legend=queues)
dts.results_plot_print(image_path)
def set_up_all(self):
"""
Run at the start of each test suite.
L2fwd prerequisites.
"""
self.frame_sizes = [64, 65, 128, 256, 512, 1024, 1280, 1518]
self.test_queues = [{'queues': 1, 'Mpps': {}, 'pct': {}},
{'queues': 2, 'Mpps': {}, 'pct': {}},
{'queues': 4, 'Mpps': {}, 'pct': {}},
{'queues': 8, 'Mpps': {}, 'pct': {}}
]
self.core_config = "1S/4C/1T"
self.number_of_ports = 2
self.headers_size = HEADER_SIZE['eth'] + HEADER_SIZE['ip'] + \
HEADER_SIZE['udp']
self.dut_ports = self.dut.get_ports_performance(self.nic)
self.verify(len(self.dut_ports) >= self.number_of_ports,
"Not enough ports for " + self.nic)
self.ports_socket = self.dut.get_numa_id(self.dut_ports[0])
# compile
out = self.dut.build_dpdk_apps("./examples/l2fwd")
self.verify("Error" not in out, "Compilation error")
self.verify("No such" not in out, "Compilation error")
self.table_header = ['Frame']
for queue in self.test_queues:
self.table_header.append("%d queues Mpps" % queue['queues'])
self.table_header.append("% linerate")
dts.results_table_add_header(self.table_header)
self.plotting = Plotting(self.dut.crb['name'], self.target, self.nic)
def set_up(self):
"""
Run before each test case.
"""
pass
def quit_l2fwd(self):
self.dut.send_expect("fg", "l2fwd ", 5)
self.dut.send_expect("^C", "# ", 5)
def test_port_testing(self):
"""
Check port forwarding.
"""
# the cases use the first two ports
port_mask = dts.create_mask([self.dut_ports[0], self.dut_ports[1]])
self.dut.send_expect("./examples/l2fwd/build/app/l2fwd -n 1 -c f -- -q 8 -p %s &" % port_mask, "L2FWD: entering main loop", 60)
for i in [0, 1]:
tx_port = self.tester.get_local_port(self.dut_ports[i])
rx_port = self.tester.get_local_port(self.dut_ports[1 - i])
tx_interface = self.tester.get_interface(tx_port)
rx_interface = self.tester.get_interface(rx_port)
self.tester.scapy_background()
self.tester.scapy_append('p = sniff(iface="%s", count=1)' % rx_interface)
self.tester.scapy_append('number_packets=len(p)')
self.tester.scapy_append('RESULT = str(number_packets)')
self.tester.scapy_foreground()
self.tester.scapy_append('sendp([Ether()/IP()/UDP()/("X"*46)], iface="%s")' % tx_interface)
self.tester.scapy_execute()
number_packets = self.tester.scapy_get_result()
self.verify(number_packets == "1", "Failed to switch L2 frame")
self.quit_l2fwd()
def test_perf_l2fwd_performance(self):
"""
Benchmark performance for frame_sizes.
"""
ports = []
for port in xrange(self.number_of_ports):
ports.append(self.dut_ports[port])
port_mask = dts.create_mask(ports)
core_mask = dts.create_mask(self.dut.get_core_list(self.core_config,
socket=self.ports_socket))
for frame_size in self.frame_sizes:
payload_size = frame_size - self.headers_size
tgen_input = []
for port in xrange(self.number_of_ports):
rx_port = self.tester.get_local_port(self.dut_ports[port % self.number_of_ports])
tx_port = self.tester.get_local_port(self.dut_ports[(port + 1) % self.number_of_ports])
destination_mac = self.dut.get_mac_address(self.dut_ports[(port + 1) % self.number_of_ports])
self.tester.scapy_append('wrpcap("l2fwd_%d.pcap", [Ether(dst="%s")/IP()/UDP()/("X"*%d)])' % (
port, destination_mac, payload_size))
tgen_input.append((tx_port, rx_port, "l2fwd_%d.pcap" % port))
self.tester.scapy_execute()
for queues in self.test_queues:
command_line = "./examples/l2fwd/build/app/l2fwd -n %d -c %s -- -q %s -p %s &" % \
(self.dut.get_memory_channels(), core_mask,
str(queues['queues']), port_mask)
self.dut.send_expect(command_line, "memory mapped", 60)
info = "Executing l2fwd using %s queues, frame size %d and %s setup.\n" % \
(queues['queues'], frame_size, self.core_config)
self.logger.info(info)
dts.report(info, annex=True)
dts.report(command_line + "\n\n", frame=True, annex=True)
_, pps = self.tester.traffic_generator_throughput(tgen_input)
Mpps = pps / 1000000.0
queues['Mpps'][frame_size] = Mpps
queues['pct'][frame_size] = Mpps * 100 / float(self.wirespeed(
self.nic,
frame_size,
self.number_of_ports))
self.quit_l2fwd()
# Look for transmission error in the results
for frame_size in self.frame_sizes:
for n in range(len(self.test_queues)):
self.verify(self.test_queues[n]['Mpps'][frame_size] > 0,
"No traffic detected")
# Prepare the results for table and plot printing
for frame_size in self.frame_sizes:
results_row = []
results_row.append(frame_size)
for queue in self.test_queues:
results_row.append(queue['Mpps'][frame_size])
results_row.append(queue['pct'][frame_size])
dts.results_table_add_row(results_row)
self.plot_results()
dts.results_table_print()
def tear_down(self):
"""
Run after each test case.
"""
pass
def tear_down_all(self):
"""
Run after each test suite.
"""
pass
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