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# Copyright (c) 2020 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 functionality which sets L2 forwarding for DPDK on
DUT nodes.
"""
from resources.libraries.python.Constants import Constants
from resources.libraries.python.DpdkUtil import DpdkUtil
from resources.libraries.python.ssh import exec_cmd_no_error
from resources.libraries.python.topology import NodeType, Topology
class TestpmdTest:
"""Setup the DPDK for testpmd performance test."""
@staticmethod
def start_testpmd(
node, if1, if2, lcores_list, nb_cores, queue_nums,
jumbo_frames, rxq_size=1024, txq_size=1024):
"""
Execute the testpmd on the DUT node.
:param node: DUT node.
:param if1: The test link interface 1.
:param if2: The test link interface 2.
:param lcores_list: The DPDK run cores.
:param nb_cores: The cores number for the forwarding.
:param queue_nums: The queues number for the NIC.
:param jumbo_frames: Indication if the jumbo frames are used (True) or
not (False).
:param rxq_size: RXQ size. Default=1024.
:param txq_size: TXQ size. Default=1024.
:type node: dict
:type if1: str
:type if2: str
:type lcores_list: str
:type nb_cores: str
:type queue_nums: str
:type jumbo_frames: bool
:type rxq_size: int
:type txq_size: int
:raises RuntimeError: If the script "run_testpmd.sh" fails.
"""
if node[u"type"] == NodeType.DUT:
if_pci0 = Topology.get_interface_pci_addr(node, if1)
if_pci1 = Topology.get_interface_pci_addr(node, if2)
pmd_max_pkt_len = u"9200" if jumbo_frames else u"1518"
testpmd_args = DpdkUtil.get_testpmd_args(
eal_corelist=f"1,{lcores_list}",
eal_driver=False,
eal_pci_whitelist0=if_pci0,
eal_pci_whitelist1=if_pci1,
eal_in_memory=True,
pmd_num_mbufs=16384,
pmd_fwd_mode=u"io",
pmd_nb_ports=u"2",
pmd_portmask=u"0x3",
pmd_max_pkt_len=pmd_max_pkt_len,
pmd_mbuf_size=u"16384",
pmd_rxd=rxq_size,
pmd_txd=txq_size,
pmd_rxq=queue_nums,
pmd_txq=queue_nums,
pmd_nb_cores=nb_cores,
pmd_disable_link_check=True,
pmd_auto_start=True,
pmd_numa=True
)
command = f"{Constants.REMOTE_FW_DIR}/{Constants.RESOURCES_LIB_SH}"\
f"/entry/run_testpmd.sh \"{testpmd_args}\""
message = f"Failed to execute testpmd at node {node['host']}"
exec_cmd_no_error(node, command, timeout=1800, message=message)
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