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Diffstat (limited to 'resources/libraries/python/DpdkUtil.py')
-rw-r--r-- | resources/libraries/python/DpdkUtil.py | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/resources/libraries/python/DpdkUtil.py b/resources/libraries/python/DpdkUtil.py new file mode 100644 index 0000000000..5eea0d6c26 --- /dev/null +++ b/resources/libraries/python/DpdkUtil.py @@ -0,0 +1,109 @@ +# 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. + +"""Dpdk Utilities Library.""" + +from resources.libraries.python.ssh import SSH, exec_cmd_no_error + + +class DpdkUtil(object): + """Utilities for DPDK.""" + + @staticmethod + def dpdk_testpmd_start(node, **args): + """Start DPDK testpmd app on VM node. + + :param node: VM Node to start testpmd on. + :param args: List of testpmd parameters. + :type node: dict + :type args: list + :return: nothing + """ + # Set the hexadecimal bitmask of the cores to run on. + eal_coremask = '-c {} '.format(args['eal_coremask'])\ + if args.get('eal_coremask', '') else '' + # Set the number of memory channels to use. + eal_mem_channels = '-n {} '.format(args['eal_mem_channels'])\ + if args.get('eal_mem_channels', '') else '' + # Set the memory to allocate on specific sockets (comma separated). + eal_socket_mem = '--socket-mem {} '.format(args['eal_socket_mem'])\ + if args.get('eal_socket_mem', '') else '' + # Load an external driver. Multiple -d options are allowed. + eal_driver = '-d /usr/lib/librte_pmd_virtio.so ' + # Set the forwarding mode: io, mac, mac_retry, mac_swap, flowgen, + # rxonly, txonly, csum, icmpecho, ieee1588 + pmd_fwd_mode = '--forward-mode={} '.format(args['pmd_fwd_mode'])\ + if args.get('pmd_fwd_mode', '') else '' + # Set the number of packets per burst to N. + pmd_burst = '--burst=64 ' + # Set the number of descriptors in the TX rings to N. + pmd_txd = '--txd=2048 ' + # Set the number of descriptors in the RX rings to N. + pmd_rxd = '--rxd=2048 ' + # Set the hexadecimal bitmask of TX queue flags. + pmd_txqflags = '--txqflags=0xf00 ' + # Set the number of mbufs to be allocated in the mbuf pools. + pmd_total_num_mbufs = '--total-num-mbufs=65536 ' + # Set the hexadecimal bitmask of the ports for forwarding. + pmd_portmask = '--portmask=0x3 ' + # Disable hardware VLAN. + pmd_disable_hw_vlan = '--disable-hw-vlan '\ + if args.get('pmd_disable_hw_vlan', '') else '' + # Disable RSS (Receive Side Scaling). + pmd_disable_rss = '--disable-rss '\ + if args.get('pmd_disable_rss', '') else '' + # Set the hexadecimal bitmask of the cores running forwarding. Master + # lcore=0 is reserved, so highest bit is set to 0. + pmd_coremask = '--coremask={} '.format(\ + hex(int(args['eal_coremask'], 0) & 0xFFFE))\ + if args.get('eal_coremask', '') else '' + # Set the number of forwarding cores based on coremask. + pmd_nb_cores = '--nb-cores={} '.format(\ + bin(int(args['eal_coremask'], 0) & 0xFFFE).count('1'))\ + if args.get('eal_coremask', '') else '' + eal_options = '-v '\ + + eal_coremask\ + + eal_mem_channels\ + + eal_socket_mem\ + + eal_driver + pmd_options = '-- '\ + + pmd_fwd_mode\ + + pmd_burst\ + + pmd_txd\ + + pmd_rxd\ + + pmd_txqflags\ + + pmd_total_num_mbufs\ + + pmd_portmask\ + + pmd_disable_hw_vlan\ + + pmd_disable_rss\ + + pmd_coremask\ + + pmd_nb_cores + ssh = SSH() + ssh.connect(node) + cmd = "/start-testpmd.sh {0} {1}".format(eal_options, pmd_options) + exec_cmd_no_error(node, cmd, sudo=True) + ssh.disconnect(node) + + @staticmethod + def dpdk_testpmd_stop(node): + """Stop DPDK testpmd app on node. + + :param node: Node to stop testpmd on. + :type node: dict + :return: nothing + """ + ssh = SSH() + ssh.connect(node) + cmd = "/stop-testpmd.sh" + exec_cmd_no_error(node, cmd, sudo=True) + ssh.disconnect(node) |