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# Copyright (c) 2023 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:
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""QAT util library."""
from resources.libraries.python.DUTSetup import DUTSetup
from resources.libraries.python.topology import NodeType, Topology
from resources.libraries.python.VPPUtil import VPPUtil
class QATUtil:
"""Contains methods for setting up QATs."""
@staticmethod
def crypto_device_verify_on_all_duts(nodes):
"""Verify if Crypto QAT device and its virtual functions are initialized
on all DUTs.
:param nodes: Nodes in the topology.
:type nodes: dict
"""
VPPUtil.stop_vpp_service_on_all_duts(nodes)
for node in nodes.values():
if node["type"] == NodeType.DUT:
cryptodevs = Topology.get_cryptodev(node)
if not cryptodevs:
return
for device in cryptodevs.values():
QATUtil.crypto_device_init(node, device)
@staticmethod
def crypto_device_init(node, device):
"""Init Crypto QAT device virtual functions on DUT.
:param node: DUT node.
:device: Crypto device entry from topology file.
:type node: dict
:type device: dict
"""
DUTSetup.verify_kernel_module(node, device["module"], force_load=True)
current_driver = DUTSetup.get_pci_dev_driver(
node, device["pci_address"].replace(":", r"\:")
)
if current_driver is not None:
DUTSetup.pci_driver_unbind(node, device["pci_address"])
# Bind to kernel driver.
DUTSetup.pci_driver_bind(node, device["pci_address"], device["driver"])
# Initialize QAT VFs.
if int(device["numvfs"]) > 0:
DUTSetup.set_sriov_numvfs(
node, device["pci_address"], path="drivers/4xxx",
numvfs=device["numvfs"]
)
for cvf in range(int(device["numvfs"])):
DUTSetup.pci_vf_driver_unbind(
node, device["pci_address"], cvf
)
DUTSetup.pci_vf_driver_bind(
node, device["pci_address"], cvf, "vfio-pci"
)
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