| #!/usr/bin/env python |
| """GSO functional tests""" |
| |
| # |
| # Add tests for: |
| # - GSO |
| # - Verify that sending Jumbo frame without GSO enabled correctly |
| # - Verify that sending Jumbo frame with GSO enabled correctly |
| # - Verify that sending Jumbo frame with GSO enabled only on ingress interface |
| # |
| import unittest |
| |
| from scapy.packet import Raw |
| from scapy.layers.inet6 import IPv6, Ether, IP, UDP, ICMPv6PacketTooBig |
| from scapy.layers.inet import TCP, ICMP |
| from scapy.layers.vxlan import VXLAN |
| from scapy.data import ETH_P_IP, ETH_P_IPV6, ETH_P_ARP |
| |
| from framework import VppTestCase, VppTestRunner |
| from vpp_object import VppObject |
| from vpp_interface import VppInterface |
| from vpp_ip import DpoProto |
| from vpp_ip_route import VppIpRoute, VppRoutePath, FibPathProto |
| from socket import AF_INET, AF_INET6, inet_pton |
| from util import reassemble4 |
| |
| |
| """ Test_gso is a subclass of VPPTestCase classes. |
| GSO tests. |
| """ |
| |
| |
| class TestGSO(VppTestCase): |
| """ GSO Test Case """ |
| |
| def __init__(self, *args): |
| VppTestCase.__init__(self, *args) |
| |
| @classmethod |
| def setUpClass(self): |
| super(TestGSO, self).setUpClass() |
| |
| @classmethod |
| def tearDownClass(self): |
| super(TestGSO, self).tearDownClass() |
| |
| def setUp(self): |
| super(TestGSO, self).setUp() |
| |
| def tearDown(self): |
| super(TestGSO, self).tearDown() |
| if not self.vpp_dead: |
| for i in self.pg_interfaces: |
| i.unconfig_ip4() |
| i.unconfig_ip6() |
| i.admin_down() |
| |
| def test_gso(self): |
| """ GSO test """ |
| # |
| # Send jumbo frame with gso disabled and DF bit is set |
| # |
| self.create_pg_interfaces(range(2)) |
| for i in self.pg_interfaces: |
| i.admin_up() |
| i.config_ip4() |
| i.config_ip6() |
| i.disable_ipv6_ra() |
| i.resolve_arp() |
| i.resolve_ndp() |
| |
| p4 = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / |
| IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4, |
| flags='DF') / |
| TCP(sport=1234, dport=1234) / |
| Raw(b'\xa5' * 65200)) |
| |
| rxs = self.send_and_expect(self.pg0, [p4], self.pg0) |
| |
| for rx in rxs: |
| self.assertEqual(rx[Ether].src, self.pg0.local_mac) |
| self.assertEqual(rx[Ether].dst, self.pg0.remote_mac) |
| self.assertEqual(rx[IP].src, self.pg0.local_ip4) |
| self.assertEqual(rx[IP].dst, self.pg0.remote_ip4) |
| self.assertEqual(rx[ICMP].type, 3) # "dest-unreach" |
| self.assertEqual(rx[ICMP].code, 4) # "fragmentation-needed" |
| |
| # |
| # Send jumbo frame with gso enabled and DF bit is set |
| # input and output interfaces support GSO |
| # |
| self.create_pg_interfaces(range(2, 4), 1, 1460) |
| for i in self.pg_interfaces: |
| i.admin_up() |
| i.config_ip4() |
| i.config_ip6() |
| i.disable_ipv6_ra() |
| i.resolve_arp() |
| i.resolve_ndp() |
| |
| p41 = (Ether(src=self.pg2.remote_mac, dst=self.pg2.local_mac) / |
| IP(src=self.pg2.remote_ip4, dst=self.pg3.remote_ip4, |
| flags='DF') / |
| TCP(sport=1234, dport=1234) / |
| Raw(b'\xa5' * 65200)) |
| |
| rxs = self.send_and_expect(self.pg2, [p41], self.pg3) |
| |
| for rx in rxs: |
| self.assertEqual(rx[Ether].src, self.pg3.local_mac) |
| self.assertEqual(rx[Ether].dst, self.pg3.remote_mac) |
| self.assertEqual(rx[IP].src, self.pg2.remote_ip4) |
| self.assertEqual(rx[IP].dst, self.pg3.remote_ip4) |
| self.assertEqual(rx[IP].len, 65240) # 65200 + 20 (IP) + 20 (TCP) |
| self.assertEqual(rx[TCP].sport, 1234) |
| self.assertEqual(rx[TCP].dport, 1234) |
| |
| # |
| # Send jumbo frame with gso enabled only on input interface |
| # and DF bit is set. GSO packet will be chunked into gso_size |
| # data payload |
| # |
| self.create_pg_interfaces(range(4, 5)) |
| for i in self.pg_interfaces: |
| i.admin_up() |
| i.config_ip4() |
| i.config_ip6() |
| i.disable_ipv6_ra() |
| i.resolve_arp() |
| i.resolve_ndp() |
| |
| self.vapi.feature_gso_enable_disable(self.pg4.sw_if_index) |
| p42 = (Ether(src=self.pg2.remote_mac, dst=self.pg2.local_mac) / |
| IP(src=self.pg2.remote_ip4, dst=self.pg4.remote_ip4, |
| flags='DF') / |
| TCP(sport=1234, dport=1234) / |
| Raw(b'\xa5' * 65200)) |
| |
| rxs = self.send_and_expect(self.pg2, [p42], self.pg4, 45) |
| size = 0 |
| for rx in rxs: |
| self.assertEqual(rx[Ether].src, self.pg4.local_mac) |
| self.assertEqual(rx[Ether].dst, self.pg4.remote_mac) |
| self.assertEqual(rx[IP].src, self.pg2.remote_ip4) |
| self.assertEqual(rx[IP].dst, self.pg4.remote_ip4) |
| self.assertEqual(rx[TCP].sport, 1234) |
| self.assertEqual(rx[TCP].dport, 1234) |
| |
| size = rxs[44][TCP].seq + rxs[44][IP].len - 20 - 20 |
| self.assertEqual(size, 65200) |
| |
| # |
| # Send jumbo frame with gso enabled only on input interface |
| # and DF bit is unset. GSO packet will be fragmented. |
| # |
| self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [576, 0, 0, 0]) |
| |
| p43 = (Ether(src=self.pg2.remote_mac, dst=self.pg2.local_mac) / |
| IP(src=self.pg2.remote_ip4, dst=self.pg1.remote_ip4) / |
| TCP(sport=1234, dport=1234) / |
| Raw(b'\xa5' * 65200)) |
| |
| rxs = self.send_and_expect(self.pg2, [p43], self.pg1, 119) |
| size = 0 |
| for rx in rxs: |
| self.assertEqual(rx[Ether].src, self.pg1.local_mac) |
| self.assertEqual(rx[Ether].dst, self.pg1.remote_mac) |
| self.assertEqual(rx[IP].src, self.pg2.remote_ip4) |
| self.assertEqual(rx[IP].dst, self.pg1.remote_ip4) |
| size += rx[IP].len - 20 |
| size -= 20 # TCP header |
| self.assertEqual(size, 65200) |
| |
| # |
| # Send jumbo frame with gso enabled only on input interface with 9K MTU |
| # and DF bit is unset. GSO packet will be fragmented. GSO size will be |
| # 8960. |
| # |
| self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [9000, 0, 0, 0]) |
| self.create_pg_interfaces(range(5, 6), 1, 8960) |
| for i in self.pg_interfaces: |
| i.admin_up() |
| i.config_ip4() |
| i.config_ip6() |
| i.disable_ipv6_ra() |
| i.resolve_arp() |
| i.resolve_ndp() |
| |
| self.vapi.sw_interface_set_mtu(self.pg5.sw_if_index, [9000, 0, 0, 0]) |
| self.vapi.feature_gso_enable_disable(self.pg1.sw_if_index) |
| p44 = (Ether(src=self.pg5.remote_mac, dst=self.pg5.local_mac) / |
| IP(src=self.pg5.remote_ip4, dst=self.pg1.remote_ip4) / |
| TCP(sport=1234, dport=1234) / |
| Raw(b'\xa5' * 65200)) |
| |
| self.pg1.enable_capture() |
| rxs = self.send_and_expect(self.pg5, [p44], self.pg1, 33) |
| size = 0 |
| for rx in rxs: |
| self.assertEqual(rx[Ether].src, self.pg1.local_mac) |
| self.assertEqual(rx[Ether].dst, self.pg1.remote_mac) |
| self.assertEqual(rx[IP].src, self.pg5.remote_ip4) |
| self.assertEqual(rx[IP].dst, self.pg1.remote_ip4) |
| size = rxs[32][TCP].seq + rxs[32][IP].len - 20 - 20 |
| self.assertEqual(size, 65200) |
| |
| if __name__ == '__main__': |
| unittest.main(testRunner=VppTestRunner) |