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# Copyright (c) 2016 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.
"""This module implements initialization and cleanup of DPDK environment."""
from resources.libraries.python.ssh import SSH
from resources.libraries.python.constants import Constants as con
from resources.libraries.python.topology import Topology
class DPDKTools(object):
"""This class implements:
- Initialization of DPDK environment,
- Cleanup of DPDK environment.
"""
@staticmethod
def initialize_dpdk_environment(dut_node, dut_if1, dut_if2):
"""
Initialize the DPDK test environment on the dut_node.
Load the module uio and igb_uio, then bind the test NIC to the igb_uio.
:param dut_node: Will init the DPDK on this node.
:param dut_if1: DUT interface name.
:param dut_if2: DUT interface name.
:type dut_node: dict
:type dut_if1: str
:type dut_if2: str
:returns: none
:raises RuntimeError: If it fails to bind the interfaces to igb_uio.
"""
pci_address1 = Topology.get_interface_pci_addr(dut_node, dut_if1)
pci_address2 = Topology.get_interface_pci_addr(dut_node, dut_if2)
ssh = SSH()
ssh.connect(dut_node)
cmd = 'cd {0}/dpdk-tests/dpdk_scripts/ && sudo ./init_dpdk.sh {1} {2}' \
.format(con.REMOTE_FW_DIR, pci_address1, pci_address2)
(ret_code, _, _) = ssh.exec_command(cmd, timeout=600)
if ret_code != 0:
raise RuntimeError('Failed to bind the interfaces to igb_uio at '
'node {0}'.format(dut_node['host']))
@staticmethod
def cleanup_dpdk_environment(dut_node, dut_if1, dut_if2):
"""
Cleanup the DPDK test environment on the DUT node.
Unbind the NIC from the igb_uio and bind them to the kernel driver.
:param dut_node: Will cleanup the DPDK on this node.
:param dut_if1: DUT interface name.
:param dut_if2: DUT interface name.
:type dut_node: dict
:type dut_if1: str
:type dut_if2: str
:returns: none
:raises RuntimeError: If it fails to cleanup the dpdk.
"""
pci_address1 = Topology.get_interface_pci_addr(dut_node, dut_if1)
if1_driver = Topology.get_interface_driver(dut_node, dut_if1)
pci_address2 = Topology.get_interface_pci_addr(dut_node, dut_if2)
if2_driver = Topology.get_interface_driver(dut_node, dut_if2)
ssh = SSH()
ssh.connect(dut_node)
cmd = 'cd {0}/dpdk-tests/dpdk_scripts/ && sudo ./cleanup_dpdk.sh ' \
'{1} {2} {3} {4}'.format(con.REMOTE_FW_DIR, if1_driver,
pci_address1, if2_driver, pci_address2)
(ret_code, _, _) = ssh.exec_command(cmd, timeout=600)
if ret_code != 0:
raise RuntimeError('Failed to cleanup the dpdk at node {0}'
.format(dut_node['host']))
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