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authorMichal Weglicki <michalx.weglicki@intel.com>2015-07-24 10:42:38 +0100
committerMaryam Tahhan <maryam.tahhan@intel.com>2015-08-06 09:40:55 +0000
commit06468e123bdcbf5930abdf9d5d9e2432a7159839 (patch)
treeffb137fcace56e1fec6b3f064ffe0d609e56f807 /vswitches/ovs_vanilla.py
parentcb5400b079ec8aacfd6dac73cbf59b74bbcb4e1e (diff)
Vanilla OVS support implementation
JIRA: VSPERF-57 This patch implements Vanilla OVS support.It contains: * New IVswitch implementation: OvsVanilla, * New configuration contants, * New mandatory configuration variable: VSWITCH_VANILLA_PHY_PORT_NAMES for Vanilla OVS has been added, * Virtual ports are not yet implemented, * Some kernel modules wrapping methods has been moved from dpdk.py to tools. * Fixed bug where ovsdb hasn't been killed at the end of test case run on some platforms. Change-Id: I21a0d84dbc4004aae564d5547387a2563f2d1e5b Signed-off-by: Michal Weglicki <michalx.weglicki@intel.com> Reviewed-by: Eugene Snider <Eugene.Snider@huawei.com> Reviewed-by: Gurpreet Singh <gurpreet.singh@spirent.com> Reviewed-by: Tv Rao <tv.rao@freescale.com> Reviewed-by: Martin Klozik <martinx.klozik@intel.com> Reviewed-by: Billy O Mahony <billy.o.mahony@intel.com> Reviewed-by: Maryam Tahhan <maryam.tahhan@intel.com>
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+# Copyright 2015 Intel Corporation.
+#
+# 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.
+
+"""VSPERF Vanilla OVS implementation
+"""
+
+import logging
+from conf import settings
+from vswitches.vswitch import IVSwitch
+from src.ovs import VSwitchd, OFBridge
+from tools.module_manager import ModuleManager, KernelModuleInsertMode
+
+VSWITCHD_CONST_ARGS = ['--', '--log-file']
+
+class OvsVanilla(IVSwitch):
+ """VSwitch Vanilla implementation
+
+ This is wrapper for functionality implemented in src.ovs.
+
+ The method docstrings document only considerations specific to this
+ implementation. For generic information of the nature of the methods,
+ see the interface definition.
+ """
+
+ _logger = logging.getLogger()
+ _ports = settings.getValue('VSWITCH_VANILLA_PHY_PORT_NAMES')
+ _current_id = 0
+
+ def __init__(self):
+ #vswitchd_args = VSWITCHD_CONST_ARGS
+ vswitchd_args = ["unix:%s" % VSwitchd.getDbSockPath()]
+ vswitchd_args += settings.getValue('VSWITCHD_VANILLA_ARGS')
+ self._vswitchd = VSwitchd(vswitchd_args=vswitchd_args,
+ expected_cmd="db.sock: connected")
+ self._bridges = {}
+ self._module_manager = ModuleManager(KernelModuleInsertMode.MODPROBE)
+
+ def start(self):
+ """See IVswitch for general description
+
+ Activates kernel modules, ovsdb and vswitchd.
+ """
+ self._module_manager.insert_modules(
+ settings.getValue('VSWITCH_VANILLA_KERNEL_MODULES'))
+ self._logger.info("Starting Vswitchd...")
+ self._vswitchd.start()
+ self._logger.info("Vswitchd...Started.")
+
+ def stop(self):
+ """See IVswitch for general description
+
+ Kills ovsdb and vswitchd and removes kernel modules.
+ """
+ self._vswitchd.kill()
+ self._module_manager.remove_modules()
+
+ def add_switch(self, switch_name):
+ """See IVswitch for general description
+ """
+ bridge = OFBridge(switch_name)
+ bridge.create()
+ bridge.set_db_attribute('Open_vSwitch', '.',
+ 'other_config:max-idle', '60000')
+ self._bridges[switch_name] = bridge
+
+ def del_switch(self, switch_name):
+ """See IVswitch for general description
+ """
+ bridge = self._bridges[switch_name]
+ self._bridges.pop(switch_name)
+ bridge.destroy()
+
+ def add_phy_port(self, switch_name):
+ """
+ Method adds port based on configured VSWITCH_VANILLA_PHY_PORT_NAMES
+ stored in config file.
+
+ See IVswitch for general description
+ """
+ if self._current_id == len(self._ports):
+ self._logger.error("Can't add port! There are only " +
+ len(self._ports) + " ports " +
+ "defined in config!")
+ raise
+
+ bridge = self._bridges[switch_name]
+ port_name = self._ports[self._current_id]
+ params = []
+ of_port = bridge.add_port(port_name, params)
+ self._current_id += 1
+ return (port_name, of_port)
+
+ def add_vport(self, switch_name):
+ """See IVswitch for general description"""
+ raise NotImplementedError("Not implemented for Vanilla OVS.")
+
+ def get_ports(self, switch_name):
+ """See IVswitch for general description
+ """
+ bridge = self._bridges[switch_name]
+ ports = list(bridge.get_ports().items())
+ return [(name, of_port) for (name, (of_port, _)) in ports]
+
+ def del_port(self, switch_name, port_name):
+ """See IVswitch for general description
+ """
+ bridge = self._bridges[switch_name]
+ bridge.del_port(port_name)
+
+ def add_flow(self, switch_name, flow):
+ """See IVswitch for general description
+ """
+ bridge = self._bridges[switch_name]
+ bridge.add_flow(flow)
+
+ def del_flow(self, switch_name, flow=None):
+ """See IVswitch for general description
+ """
+ flow = flow or {}
+ bridge = self._bridges[switch_name]
+ bridge.del_flow(flow)