X-Git-Url: https://gerrit.fd.io/r/gitweb?p=vpp.git;a=blobdiff_plain;f=test%2Ftest_gso.py;fp=test%2Ftest_gso.py;h=78c5c7346606b521709d3f1e021e371114d457f0;hp=2c8250e9d9dbc20fcb50cd2f153ab51685c3e7e2;hb=2f4586d9b3507243918c11ce99b9d151d5bde7a0;hpb=b8cb22318cd5a3135b8a0eb121a4eff4da254f54

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"""
         #