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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 Topology
from resources.libraries.python.VPPUtil import VPPUtil
class QATUtil:
"""Contains methods for setting up QATs."""
@staticmethod
def crypto_device_verify(node, crypto_type, numvfs, force_init=True):
"""Verify if Crypto QAT device virtual functions are initialized on all
DUTs. If parameter force initialization is set to True, then try to
initialize or remove VFs on QAT.
:param node: DUT node.
:crypto_type: Crypto device type - HW_DH895xcc, HW_C3xxx, HW_C4xxx
or HW_4xxx.
:param numvfs: Number of VFs to initialize, 0 - disable the VFs.
:param force_init: If True then try to initialize to specific value.
:type node: dict
:type crypto_type: string
:type numvfs: int
:type force_init: bool
:returns: nothing
:raises RuntimeError: If QAT VFs are not created and force init is set
to False.
"""
pci_addr = Topology.get_cryptodev(node)
if force_init:
# QAT is not initialized and we want to initialize with numvfs.
QATUtil.crypto_device_init(node, crypto_type, numvfs)
else:
raise RuntimeError(
f"QAT device failed to create VFs on {node[u'host']}"
)
# QAT VF devices must be re-bound to vfio-pci driver before use.
pci_addr = Topology.get_cryptodev(node)
for i in range(numvfs):
DUTSetup.pci_vf_driver_unbind(node, pci_addr, i)
DUTSetup.pci_vf_driver_bind(node, pci_addr, i, "vfio-pci")
@staticmethod
def crypto_device_init(node, crypto_type, numvfs):
"""Init Crypto QAT device virtual functions on DUT.
:param node: DUT node.
:crypto_type: Crypto device type - HW_DH895xcc, HW_C3xxx, HW_C4xxx
or HW_4xxx.
:param numvfs: Number of VFs to initialize, 0 - disable the VFs.
:type node: dict
:type crypto_type: string
:type numvfs: int
:returns: nothing
:raises RuntimeError: If failed to stop VPP or QAT failed to initialize.
"""
if crypto_type == u"HW_DH895xcc":
kernel_mod = u"qat_dh895xcc"
kernel_drv = u"dh895xcc"
elif crypto_type == u"HW_C3xxx":
kernel_mod = u"qat_c3xxx"
kernel_drv = u"c3xxx"
elif crypto_type == u"HW_C4xxx":
kernel_mod = u"qat_c4xxx"
kernel_drv = u"c4xxx"
elif crypto_type == u"HW_4xxx":
kernel_mod = u"qat_4xxx"
kernel_drv = u"4xxx"
else:
raise RuntimeError(
f"Unsupported crypto device type on {node[u'host']}"
)
pci_addr = Topology.get_cryptodev(node)
# QAT device must be re-bound to kernel driver before initialization.
DUTSetup.verify_kernel_module(node, kernel_mod, force_load=True)
# Stop VPP to prevent deadlock.
VPPUtil.stop_vpp_service(node)
current_driver = DUTSetup.get_pci_dev_driver(
node, pci_addr.replace(u":", r"\:")
)
if current_driver is not None:
DUTSetup.pci_driver_unbind(node, pci_addr)
# Bind to kernel driver.
DUTSetup.pci_driver_bind(node, pci_addr, kernel_drv)
# Initialize QAT VFs.
if numvfs > 0:
DUTSetup.set_sriov_numvfs(node, pci_addr, numvfs)
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