d9b0c6fbf7
Drop pycodestyle for code style checking in favor of black. Black is much faster, stable PEP8 compliant code style checker offering also automatic formatting. It aims to be very stable and produce smallest diffs. It's used by many small and big projects. Running checkstyle with black takes a few seconds with a terse output. Thus, test-checkstyle-diff is no longer necessary. Expand scope of checkstyle to all python files in the repo, replacing test-checkstyle with checkstyle-python. Also, fixstyle-python is now available for automatic style formatting. Note: python virtualenv has been consolidated in test/Makefile, test/requirements*.txt which will eventually be moved to a central location. This is required to simply the automated generation of docker executor images in the CI. Type: improvement Change-Id: I022a326603485f58585e879ac0f697fceefbc9c8 Signed-off-by: Klement Sekera <klement.sekera@gmail.com> Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
263 lines
9.3 KiB
Python
263 lines
9.3 KiB
Python
#!/usr/bin/env python3
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"""GRO functional tests"""
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#
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# Add tests for:
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# - GRO
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# - Verify that sending 1500 Bytes frame without GRO enabled correctly
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# - Verify that sending 1500 Bytes frame with GRO enabled correctly
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#
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import unittest
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from scapy.packet import Raw
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from scapy.layers.inet6 import IPv6, Ether, IP, UDP, ICMPv6PacketTooBig
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from scapy.layers.inet6 import ipv6nh, IPerror6
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from scapy.layers.inet import TCP, ICMP
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from scapy.data import ETH_P_IP, ETH_P_IPV6, ETH_P_ARP
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from framework import VppTestCase, VppTestRunner
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from vpp_object import VppObject
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from vpp_interface import VppInterface
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""" Test_gro is a subclass of VPPTestCase classes.
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GRO tests.
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"""
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class TestGRO(VppTestCase):
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"""GRO Test Case"""
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@classmethod
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def setUpClass(self):
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super(TestGRO, self).setUpClass()
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res = self.create_pg_interfaces(range(2))
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res_gro = self.create_pg_interfaces(range(2, 3), 1, 1460)
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self.create_pg_interfaces(range(3, 4), 1, 8940)
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self.pg_interfaces.append(res[0])
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self.pg_interfaces.append(res[1])
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self.pg_interfaces.append(res_gro[0])
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self.pg2.coalesce_enable()
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self.pg3.coalesce_enable()
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@classmethod
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def tearDownClass(self):
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super(TestGRO, self).tearDownClass()
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def setUp(self):
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super(TestGRO, self).setUp()
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for i in self.pg_interfaces:
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i.admin_up()
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i.config_ip4()
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i.config_ip6()
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i.disable_ipv6_ra()
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i.resolve_arp()
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i.resolve_ndp()
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def tearDown(self):
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super(TestGRO, self).tearDown()
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if not self.vpp_dead:
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for i in self.pg_interfaces:
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i.unconfig_ip4()
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i.unconfig_ip6()
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i.admin_down()
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def test_gro(self):
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"""GRO test"""
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n_packets = 124
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#
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# Send 1500 bytes frame with gro disabled
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#
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p4 = (
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Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
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/ IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4, flags="DF")
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/ TCP(sport=1234, dport=4321)
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/ Raw(b"\xa5" * 1460)
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)
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rxs = self.send_and_expect(self.pg0, n_packets * p4, self.pg1)
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for rx in rxs:
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self.assertEqual(rx[Ether].src, self.pg1.local_mac)
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self.assertEqual(rx[Ether].dst, self.pg1.remote_mac)
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self.assertEqual(rx[IP].src, self.pg0.remote_ip4)
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self.assertEqual(rx[IP].dst, self.pg1.remote_ip4)
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self.assertEqual(rx[TCP].sport, 1234)
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self.assertEqual(rx[TCP].dport, 4321)
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#
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# Send 1500 bytes frame with gro enabled on
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# output interfaces support GRO
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#
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p = []
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s = 0
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for n in range(0, n_packets):
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p.append(
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(
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Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
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/ IP(src=self.pg0.remote_ip4, dst=self.pg2.remote_ip4, flags="DF")
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/ TCP(sport=1234, dport=4321, seq=s, ack=n, flags="A")
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/ Raw(b"\xa5" * 1460)
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)
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)
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s += 1460
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rxs = self.send_and_expect(self.pg0, p, self.pg2, n_rx=2)
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i = 0
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for rx in rxs:
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i += 1
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self.assertEqual(rx[Ether].src, self.pg2.local_mac)
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self.assertEqual(rx[Ether].dst, self.pg2.remote_mac)
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self.assertEqual(rx[IP].src, self.pg0.remote_ip4)
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self.assertEqual(rx[IP].dst, self.pg2.remote_ip4)
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self.assertEqual(rx[IP].len, 64280) # 1460 * 44 + 40 < 65536
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self.assertEqual(rx[TCP].sport, 1234)
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self.assertEqual(rx[TCP].dport, 4321)
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self.assertEqual(rx[TCP].ack, (44 * i - 1))
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p4_temp = (
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Ether(src=self.pg2.remote_mac, dst=self.pg2.local_mac)
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/ IP(src=self.pg2.remote_ip4, dst=self.pg0.remote_ip4, flags="DF")
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/ TCP(sport=1234, dport=4321, flags="F")
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)
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rxs = self.send_and_expect(self.pg2, 100 * [p4_temp], self.pg0, n_rx=100)
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rx_coalesce = self.pg2.get_capture(1, timeout=1)
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rx0 = rx_coalesce[0]
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self.assertEqual(rx0[Ether].src, self.pg2.local_mac)
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self.assertEqual(rx0[Ether].dst, self.pg2.remote_mac)
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self.assertEqual(rx0[IP].src, self.pg0.remote_ip4)
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self.assertEqual(rx0[IP].dst, self.pg2.remote_ip4)
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self.assertEqual(rx0[IP].len, 52600) # 1460 * 36 + 40
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self.assertEqual(rx0[TCP].sport, 1234)
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self.assertEqual(rx0[TCP].dport, 4321)
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for rx in rxs:
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self.assertEqual(rx[Ether].src, self.pg0.local_mac)
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self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
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self.assertEqual(rx[IP].src, self.pg2.remote_ip4)
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self.assertEqual(rx[IP].dst, self.pg0.remote_ip4)
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self.assertEqual(rx[IP].len, 40)
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self.assertEqual(rx[TCP].sport, 1234)
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self.assertEqual(rx[TCP].dport, 4321)
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#
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# Same test with IPv6
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#
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p = []
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s = 0
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for n in range(0, 88):
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p.append(
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(
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Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
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/ IPv6(src=self.pg0.remote_ip6, dst=self.pg2.remote_ip6)
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/ TCP(sport=1234, dport=4321, seq=s, ack=n, flags="A")
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/ Raw(b"\xa5" * 1460)
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)
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)
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s += 1460
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p[-1][TCP].flags = "AP" # push to flush second packet
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rxs = self.send_and_expect(self.pg0, p, self.pg2, n_rx=2)
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i = 0
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for rx in rxs:
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i += 1
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self.assertEqual(rx[Ether].src, self.pg2.local_mac)
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self.assertEqual(rx[Ether].dst, self.pg2.remote_mac)
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self.assertEqual(rx[IPv6].src, self.pg0.remote_ip6)
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self.assertEqual(rx[IPv6].dst, self.pg2.remote_ip6)
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self.assertEqual(rx[IPv6].plen, 64260) # 1460 * 44 + 20 < 65536
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self.assertEqual(rx[TCP].sport, 1234)
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self.assertEqual(rx[TCP].dport, 4321)
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self.assertEqual(rx[TCP].ack, (44 * i - 1))
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#
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# Send a series of 1500 bytes packets each followed by a packet with a
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# PSH flag. Verify that GRO stops everytime a PSH flag is encountered
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#
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p = []
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s = 0
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for n in range(0, n_packets):
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p.append(
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(
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Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
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/ IP(src=self.pg0.remote_ip4, dst=self.pg2.remote_ip4, flags="DF")
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/ TCP(sport=1234, dport=4321, seq=s, ack=2 * n, flags="A")
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/ Raw(b"\xa5" * 1460)
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)
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)
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s += 1460
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p.append(
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(
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Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
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/ IP(src=self.pg0.remote_ip4, dst=self.pg2.remote_ip4, flags="DF")
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/ TCP(sport=1234, dport=4321, seq=s, ack=2 * n + 1, flags="AP")
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/ Raw(b"\xa5" * 1340)
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)
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)
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s += 1340
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rxs = self.send_and_expect(self.pg0, p, self.pg2, n_rx=n_packets)
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i = 0
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for rx in rxs:
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self.assertEqual(rx[Ether].src, self.pg2.local_mac)
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self.assertEqual(rx[Ether].dst, self.pg2.remote_mac)
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self.assertEqual(rx[IP].src, self.pg0.remote_ip4)
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self.assertEqual(rx[IP].dst, self.pg2.remote_ip4)
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self.assertEqual(rx[IP].len, 40 + 1460 + 1340)
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self.assertEqual(rx[TCP].sport, 1234)
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self.assertEqual(rx[TCP].dport, 4321)
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self.assertEqual(rx[TCP].ack, (2 * i + 1))
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i += 1
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#
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# Send a series of 1500 bytes packets each followed by a short packet
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# with padding. Verify that GRO removes the padding and stops on short
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# packets
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#
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p = []
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s = 0
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for n in range(0, n_packets):
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i = self.pg0
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p.append(
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(
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Ether(src=i.remote_mac, dst=i.local_mac)
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/ IP(src=i.remote_ip4, dst=self.pg2.remote_ip4, flags="DF")
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/ TCP(sport=1234, dport=4321, seq=s, ack=2 * n, flags="A")
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/ Raw(b"\xa5" * 1459)
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)
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)
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s += 1459
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p2 = (
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Ether(src=i.remote_mac, dst=i.local_mac)
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/ IP(src=i.remote_ip4, dst=self.pg2.remote_ip4, flags="DF", len=41)
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/ TCP(sport=1234, dport=4321, seq=s, ack=2 * n + 1, flags="A")
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/ Raw(b"\xa5")
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)
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# first compute csum of pkt w/o padding to work around scapy bug
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p2 = Ether(bytes(p2))
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p.append(p2 / Raw(b"\xa5" * 5)) # 1 byte data + 5 bytes padding
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s += 1
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rxs = self.send_and_expect(self.pg0, p, self.pg2, n_rx=n_packets)
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i = 0
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for rx in rxs:
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self.assertEqual(rx[Ether].src, self.pg2.local_mac)
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self.assertEqual(rx[Ether].dst, self.pg2.remote_mac)
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self.assertEqual(rx[IP].src, self.pg0.remote_ip4)
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self.assertEqual(rx[IP].dst, self.pg2.remote_ip4)
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self.assertEqual(rx[IP].len, 40 + 1459 + 1)
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self.assertEqual(rx[TCP].sport, 1234)
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self.assertEqual(rx[TCP].dport, 4321)
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self.assertEqual(rx[TCP].ack, (2 * i + 1))
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i += 1
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if __name__ == "__main__":
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unittest.main(testRunner=VppTestRunner)
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