Add gtpu flow offload test suite

The implementation of GTPU offload rx is to use ip4_gtpu flow MARK action
of NIC and vpp flow REDIRECT_TO_NODE and BUFFER_ADVANCE fuction to direct
received gtpu flow to gtpu4-flow-input graph node, skipped ethernet-input,
ip4-input, ip4-lookup, ip4-local, ip4-udp-lookup normal graph node
processing.

Verified on 3n-clx and Intel E810 NIC environment, single core with 64B packet,
performance improve ~33% that compare with pure software way.

Signed-off-by: xinfeng zhao <xinfengx.zhao@intel.com>
Signed-off-by: Yulong Pei <yulong.pei@intel.com>
Change-Id: I2af4589448bdb1729e4ce206a8cf3a1239c61af8
Signed-off-by: Yulong Pei <yulong.pei@intel.com>

3 files changed, 47 insertions, 3 deletions

diff --git a/resources/libraries/python/Constants.py b/resources/libraries/python/Constants.py
index c64461cdd0..2ecf50b770 100644
--- a/resources/libraries/python/Constants.py
+++ b/resources/libraries/python/Constants.py
@@ -308,6 +308,7 @@ class Constants:
         u"Intel-X710": 10000000000,
         u"Intel-XL710": 24500000000,
         u"Intel-XXV710": 24500000000,
+        u"Intel-E810XXV": 24500000000,
         u"Intel-E810CQ": 100000000000,
         u"Mellanox-CX556A": 100000000000,
         u"Amazon-Nitro-50G": 10000000000,
@@ -321,6 +322,7 @@ class Constants:
         u"Intel-X710": 14880952,
         u"Intel-XL710": 18750000,
         u"Intel-XXV710": 18750000,
+        u"Intel-E810XXV": 29000000,
         u"Intel-E810CQ": 58500000,
         u"Mellanox-CX556A": 148809523,
         u"Amazon-Nitro-50G": 1200000,
@@ -334,6 +336,7 @@ class Constants:
         u"Intel-X710": u"10ge2p1x710",
         u"Intel-XL710": u"40ge2p1xl710",
         u"Intel-XXV710": u"25ge2p1xxv710",
+        u"Intel-E810XXV": u"25ge2p1e810xxv",
         u"Intel-E810CQ": u"100ge2p1e810cq",
         u"Amazon-Nitro-50G": u"50ge1p1ena",
         u"Mellanox-CX556A": u"100ge2p1cx556a",
@@ -346,6 +349,7 @@ class Constants:
         u"10ge2p1x710": u"x710",
         u"40ge2p1xl710": u"xl710",
         u"25ge2p1xxv710": u"xxv710",
+        u"25ge2p1e810xxv": u"e810xxv",
         u"100ge2p1e810cq": u"e810cq",
         u"50ge1p1ena": u"ena",
         u"100ge2p1cx556a": u"cx556a",
@@ -358,6 +362,7 @@ class Constants:
         u"Intel-X710": [u"vfio-pci", u"avf", u"af_xdp"],
         u"Intel-XL710": [u"vfio-pci", u"avf", u"af_xdp"],
         u"Intel-XXV710": [u"vfio-pci", u"avf", u"af_xdp"],
+        u"Intel-E810XXV": [u"vfio-pci", u"avf", u"af_xdp"],
         u"Intel-E810CQ": [u"vfio-pci", u"avf", u"af_xdp"],
         u"Amazon-Nitro-50G": [u"vfio-pci"],
         u"Mellanox-CX556A": [u"rdma-core", u"af_xdp"],
@@ -402,6 +407,7 @@ class Constants:
         u"Intel-X710": [u"vfio-pci"],
         u"Intel-XL710": [u"vfio-pci"],
         u"Intel-XXV710": [u"vfio-pci"],
+        u"Intel-E810XXV": [u"vfio-pci"],
         u"Intel-E810CQ": [u"vfio-pci"],
         u"Amazon-Nitro-50G": [u"vfio-pci"],
         u"Mellanox-CX556A": [u"mlx5_core"],
diff --git a/resources/libraries/python/InterfaceUtil.py b/resources/libraries/python/InterfaceUtil.py
index 7e474abf8d..6ac166ac48 100644
--- a/resources/libraries/python/InterfaceUtil.py
+++ b/resources/libraries/python/InterfaceUtil.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2021 Cisco and/or its affiliates.
+# Copyright (c) 2022 Cisco and/or its affiliates.
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at:
@@ -1108,6 +1108,31 @@ class InterfaceUtil:
         return sw_if_index
 
     @staticmethod
+    def vpp_enable_gtpu_offload_rx(node, interface, gtpu_if_index):
+        """Enable GTPU offload RX onto interface.
+
+        :param node: Node to run command on.
+        :param interface: Name of the specific interface.
+        :param gtpu_if_index: Index of GTPU tunnel interface.
+
+        :type node: dict
+        :type interface: str
+        :type gtpu_interface: int
+        """
+        sw_if_index = Topology.get_interface_sw_index(node, interface)
+
+        cmd = u"gtpu_offload_rx"
+        args = dict(
+            hw_if_index=sw_if_index,
+            sw_if_index=gtpu_if_index,
+            enable=True
+        )
+
+        err_msg = f"Failed to enable GTPU offload RX on host {node[u'host']}"
+        with PapiSocketExecutor(node) as papi_exec:
+            papi_exec.add(cmd, **args).get_reply(err_msg)
+
+    @staticmethod
     def vpp_create_loopback(node, mac=None):
         """Create loopback interface on VPP node.
 
diff --git a/resources/libraries/robot/overlay/gtpu.robot b/resources/libraries/robot/overlay/gtpu.robot
index 3135be73fd..be82ca0fd5 100644
--- a/resources/libraries/robot/overlay/gtpu.robot
+++ b/resources/libraries/robot/overlay/gtpu.robot
@@ -1,4 +1,4 @@
-# Copyright (c) 2021 Intel and/or its affiliates.
+# Copyright (c) 2022 Intel and/or its affiliates.
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at:
@@ -23,7 +23,13 @@
 | | ... | Set UP state on VPP interfaces in path on nodes in 3-node circular
 | | ... | topology. Create GTPU tunnel on both DUT nodes, setup IPv4 adresses
 | | ... | with /30 prefix on DUT1-DUT2 link, and set routing on both DUT nodes
-| | ... | with prefix /24 and next hop of neighbour DUT interface.
+| | ... | with prefix /24 and next hop of neighbour DUT interface. Gtpu offload
+| | ... | rx will be enabled on both DUT nodes if offload is set to true.
+| |
+| | ... | *Arguments:*
+| | ... | - offload - False or True. Type: bool
+| |
+| | [Arguments] | ${offload}=${False}
 | |
 | | VPP Interface Set IP Address | ${dut1} | ${DUT1_${int}1}[0]
 | | ... | 10.10.10.1 | 24
@@ -60,3 +66,10 @@
 | | ... | interface=${dut1_tunnel_if_index}
 | | Vpp Route Add | ${dut2} | 10.10.10.0 | 24 | gateway=1.1.1.1
 | | ... | interface=${dut2_tunnel_if_index}
+| |
+| | Run keyword if | ${offload} == ${True}
+| | ... | Vpp Enable GTPU Offload rx
+| | ... | ${dut1} | ${DUT1_${int}2}[0] | ${dut1_tunnel_if_index}
+| | Run keyword if | ${offload} == ${True}
+| | ... | Vpp Enable GTPU Offload rx
+| | ... | ${dut2} | ${DUT2_${int}1}[0] | ${dut2_tunnel_if_index}