diff options
Diffstat (limited to 'test/test_gso.py')
| -rw-r--r-- | test/test_gso.py | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/test/test_gso.py b/test/test_gso.py index 2c8250e9d9d..78c5c734660 100644 --- a/test/test_gso.py +++ b/test/test_gso.py @@ -11,6 +11,7 @@ import unittest from scapy.packet import Raw +from scapy.layers.l2 import GRE from scapy.layers.inet6 import IPv6, Ether, IP, ICMPv6PacketTooBig from scapy.layers.inet6 import ipv6nh, IPerror6 from scapy.layers.inet import TCP, ICMP @@ -23,6 +24,7 @@ from asfframework import VppTestRunner from vpp_ip_route import VppIpRoute, VppRoutePath, FibPathProto from vpp_ipip_tun_interface import VppIpIpTunInterface from vpp_vxlan_tunnel import VppVxlanTunnel +from vpp_gre_interface import VppGreInterface from vpp_ipsec import VppIpsecSA, VppIpsecTunProtect from template_ipsec import ( @@ -89,6 +91,9 @@ class TestGSO(VppTestCase): self, self.pg0, self.pg0.local_ip6, self.pg0.remote_ip6 ) + self.gre4 = VppGreInterface(self, self.pg0.local_ip4, self.pg0.remote_ip4) + self.gre6 = VppGreInterface(self, self.pg0.local_ip6, self.pg0.remote_ip6) + def tearDown(self): super(TestGSO, self).tearDown() if not self.vpp_dead: @@ -804,6 +809,202 @@ class TestGSO(VppTestCase): sw_if_index=self.pg0.sw_if_index, enable_disable=0 ) + def test_gso_gre(self): + """GSO GRE test""" + # + # Send jumbo frame with gso enabled only on gre tunnel interface. + # create GRE tunnel on VPP pg0. + # + + # + # create gre 4 tunnel + # + self.gre4.add_vpp_config() + self.gre4.admin_up() + self.gre4.config_ip4() + + # + # Add a route that resolves the tunnel's destination + # + # Add IPv4 routes via tunnel interface + self.ip4_via_gre4_tunnel = VppIpRoute( + self, + "172.16.10.0", + 24, + [ + VppRoutePath( + "0.0.0.0", + self.gre4.sw_if_index, + proto=FibPathProto.FIB_PATH_NH_PROTO_IP4, + ) + ], + ) + self.ip4_via_gre4_tunnel.add_vpp_config() + + pgre4 = ( + Ether(src=self.pg2.remote_mac, dst="02:fe:60:1e:a2:79") + / IP(src=self.pg2.remote_ip4, dst="172.16.10.3", flags="DF") + / TCP(sport=1234, dport=1234) + / Raw(b"\xa5" * 65200) + ) + + # test when GSO segmentation is disabled, Packets are truncated + rxs = self.send_and_expect(self.pg2, 5 * [pgre4], self.pg0, 5) + 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.assert_ip_checksum_valid(rx) + self.assertEqual(rx[IP].proto, 0x2F) # GRE encap + self.assertEqual(rx[GRE].proto, 0x0800) # IPv4 + inner = rx[GRE].payload + self.assertNotEqual(rx[IP].len - 20 - 4, len(inner)) + self.assertEqual(inner[IP].src, self.pg2.remote_ip4) + self.assertEqual(inner[IP].dst, "172.16.10.3") + self.assert_ip_checksum_valid(inner) + payload_len = inner[IP].len - 20 - 20 + self.assertEqual(payload_len, 65200) + # truncated packet to MTU size + self.assertNotEqual(payload_len, len(inner[Raw])) + + # enable the GSO segmentation on GRE tunnel + self.vapi.feature_gso_enable_disable( + sw_if_index=self.gre4.sw_if_index, enable_disable=1 + ) + + # test again, this time payload will be chuncked to GSO size (i.e. 1448) + rxs = self.send_and_expect(self.pg2, 5 * [pgre4], self.pg0, 225) + size = 0 + 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.assert_ip_checksum_valid(rx) + self.assertEqual(rx[IP].proto, 0x2F) # GRE encap + self.assertEqual(rx[GRE].proto, 0x0800) # IPv4 + inner = rx[GRE].payload + self.assertEqual(rx[IP].len - 20 - 4, len(inner)) + self.assertEqual(inner[IP].src, self.pg2.remote_ip4) + self.assertEqual(inner[IP].dst, "172.16.10.3") + self.assert_ip_checksum_valid(inner) + self.assert_tcp_checksum_valid(inner) + payload_len = inner[IP].len - 20 - 20 + self.assertEqual(payload_len, len(inner[Raw])) + size += payload_len + self.assertEqual(size, 65200 * 5) + + # Disable the GSO segmentation on GRE tunnel + self.vapi.feature_gso_enable_disable( + sw_if_index=self.gre4.sw_if_index, enable_disable=0 + ) + + # test again when GSO segmentation is disabled, Packets are truncated + rxs = self.send_and_expect(self.pg2, 5 * [pgre4], self.pg0, 5) + 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.assert_ip_checksum_valid(rx) + self.assertEqual(rx[IP].proto, 0x2F) # GRE encap + self.assertEqual(rx[GRE].proto, 0x0800) # IPv4 + inner = rx[GRE].payload + self.assertNotEqual(rx[IP].len - 20 - 4, len(inner)) + self.assertEqual(inner[IP].src, self.pg2.remote_ip4) + self.assertEqual(inner[IP].dst, "172.16.10.3") + self.assert_ip_checksum_valid(inner) + payload_len = inner[IP].len - 20 - 20 + self.assertEqual(payload_len, 65200) + # truncated packet to MTU size + self.assertNotEqual(payload_len, len(inner[Raw])) + + self.ip4_via_gre4_tunnel.remove_vpp_config() + self.gre4.remove_vpp_config() + + self.gre6.add_vpp_config() + self.gre6.admin_up() + self.gre6.config_ip4() + + # + # Add a route that resolves the tunnel's destination + # Add IPv6 routes via tunnel interface + # + self.vapi.feature_gso_enable_disable( + sw_if_index=self.gre6.sw_if_index, enable_disable=1 + ) + self.ip6_via_gre6_tunnel = VppIpRoute( + self, + "fd01:10::", + 64, + [ + VppRoutePath( + "::", + self.gre6.sw_if_index, + proto=FibPathProto.FIB_PATH_NH_PROTO_IP6, + ) + ], + ) + self.ip6_via_gre6_tunnel.add_vpp_config() + + # + # Create IPv6 packet + # + pgre6 = ( + Ether(src=self.pg2.remote_mac, dst="02:fe:60:1e:a2:79") + / IPv6(src=self.pg2.remote_ip6, dst="fd01:10::3") + / TCP(sport=1234, dport=1234) + / Raw(b"\xa5" * 65200) + ) + + # test when GSO segmentation is enabled, payload will be segmented + # into GSO size (i.e. 1448) + rxs = self.send_and_expect(self.pg2, 5 * [pgre6], self.pg0, 225) + size = 0 + 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[IPv6].src, self.pg0.local_ip6) + self.assertEqual(rx[IPv6].dst, self.pg0.remote_ip6) + self.assertEqual(ipv6nh[rx[IPv6].nh], "GRE") + self.assertEqual(rx[GRE].proto, 0x86DD) # IPv6 + inner = rx[GRE].payload + self.assertEqual(rx[IPv6].plen - 4, len(inner)) + self.assertEqual(inner[IPv6].src, self.pg2.remote_ip6) + self.assertEqual(inner[IPv6].dst, "fd01:10::3") + self.assert_tcp_checksum_valid(inner) + payload_len = inner[IPv6].plen - 20 + self.assertEqual(payload_len, len(inner[Raw])) + size += payload_len + self.assertEqual(size, 65200 * 5) + + # disable GSO segmentation + self.vapi.feature_gso_enable_disable( + sw_if_index=self.gre6.sw_if_index, enable_disable=0 + ) + + # test again, this time packets will be truncated + rxs = self.send_and_expect(self.pg2, 5 * [pgre6], self.pg0, 5) + 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[IPv6].src, self.pg0.local_ip6) + self.assertEqual(rx[IPv6].dst, self.pg0.remote_ip6) + self.assertEqual(ipv6nh[rx[IPv6].nh], "GRE") + self.assertEqual(rx[GRE].proto, 0x86DD) # IPv6 + inner = rx[GRE].payload + self.assertNotEqual(rx[IPv6].plen - 4, len(inner)) + self.assertEqual(inner[IPv6].src, self.pg2.remote_ip6) + self.assertEqual(inner[IPv6].dst, "fd01:10::3") + payload_len = inner[IPv6].plen - 20 + self.assertEqual(payload_len, 65200) + # packets are truncated to MTU size + self.assertNotEqual(payload_len, len(inner[Raw])) + + self.ip6_via_gre6_tunnel.remove_vpp_config() + self.gre6.remove_vpp_config() + def test_gso_ipsec(self): """GSO IPSEC test""" # |