"""
import logging
+import netaddr
from core.vswitch_controller import IVswitchController
-from vswitches.utils import add_ports_to_flow
+from conf import settings
_FLOW_TEMPLATE = {
'idle_timeout': '0'
}
-BRIDGE_NAME = 'br0'
+
+_PROTO_TCP = 6
+_PROTO_UDP = 17
class VswitchControllerP2P(IVswitchController):
"""VSwitch controller for P2P deployment scenario.
_deployment_scenario: A string describing the scenario to set-up in the
constructor.
"""
- def __init__(self, vswitch_class):
+ def __init__(self, vswitch_class, traffic):
"""Initializes up the prerequisites for the P2P deployment scenario.
:vswitch_class: the vSwitch class to be used.
self._vswitch = vswitch_class()
self._deployment_scenario = "P2P"
self._logger.debug('Creation using ' + str(self._vswitch_class))
+ self._traffic = traffic.copy()
def setup(self):
"""Sets up the switch for p2p.
try:
self._vswitch.start()
- self._vswitch.add_switch(BRIDGE_NAME)
+ bridge = settings.getValue('VSWITCH_BRIDGE_NAME')
+ self._vswitch.add_switch(bridge)
- (_, phy1_number) = self._vswitch.add_phy_port(BRIDGE_NAME)
- (_, phy2_number) = self._vswitch.add_phy_port(BRIDGE_NAME)
+ (_, _) = self._vswitch.add_phy_port(bridge)
+ (_, _) = self._vswitch.add_phy_port(bridge)
- self._vswitch.del_flow(BRIDGE_NAME)
+ self._vswitch.del_flow(bridge)
# table#0 - flows designed to force 5 & 13 tuple matches go here
flow = {'table':'0', 'priority':'1', 'actions': ['goto_table:1']}
- self._vswitch.add_flow(BRIDGE_NAME, flow)
+ self._vswitch.add_flow(bridge, flow)
# table#1 - flows to route packets between ports goes here. The
# chosen port is communicated to subsequent tables by setting the
# metadata value to the egress port number
- flow = {'table':'1', 'priority':'1', 'in_port':'1',
- 'actions': ['write_actions(output:2)', 'write_metadata:2',
- 'goto_table:2']}
- self._vswitch.add_flow(BRIDGE_NAME, flow)
- flow = {'table':'1', 'priority':'1', 'in_port':'2',
- 'actions': ['write_actions(output:1)', 'write_metadata:1',
- 'goto_table:2']}
- self._vswitch.add_flow(BRIDGE_NAME, flow)
+
+ # configure flows according to the TC definition
+ flow_template = _FLOW_TEMPLATE.copy()
+ if self._traffic['flow_type'] == 'IP':
+ flow_template.update({'dl_type':'0x0800', 'nw_src':self._traffic['l3']['srcip'],
+ 'nw_dst':self._traffic['l3']['dstip']})
+
+ flow = flow_template.copy()
+ flow.update({'table':'1', 'priority':'1', 'in_port':'1',
+ 'actions': ['write_actions(output:2)', 'write_metadata:0x2',
+ 'goto_table:2']})
+ self.process_flow_template(bridge, flow)
+ flow = flow_template.copy()
+ flow.update({'table':'1', 'priority':'1', 'in_port':'2',
+ 'actions': ['write_actions(output:1)', 'write_metadata:0x1',
+ 'goto_table:2']})
+ self.process_flow_template(bridge, flow)
# Frame modification table. Frame modification flow rules are
# isolated in this table so that they can be turned on or off
# without affecting the routing or tuple-matching flow rules.
flow = {'table':'2', 'priority':'1', 'actions': ['goto_table:3']}
- self._vswitch.add_flow(BRIDGE_NAME, flow)
+ self._vswitch.add_flow(bridge, flow)
# Egress table
# (TODO) Billy O'Mahony - the drop action here actually required in
# order to egress the packet. This is the subject of a thread on
# ovs-discuss 2015-06-30.
flow = {'table':'3', 'priority':'1', 'actions': ['drop']}
- self._vswitch.add_flow(BRIDGE_NAME, flow)
-
- flow = add_ports_to_flow(_FLOW_TEMPLATE, phy2_number, phy1_number)
- self._vswitch.add_flow(BRIDGE_NAME, flow)
-
+ self._vswitch.add_flow(bridge, flow)
except:
self._vswitch.stop()
raise
"""See IVswitchController for description
"""
self._logger.debug('get_ports_info using ' + str(self._vswitch_class))
- return self._vswitch.get_ports(BRIDGE_NAME)
+ return self._vswitch.get_ports(settings.getValue('VSWITCH_BRIDGE_NAME'))
+
+ def dump_vswitch_flows(self):
+ """See IVswitchController for description
+ """
+ self._vswitch.dump_flows(settings.getValue('VSWITCH_BRIDGE_NAME'))
+
+ def process_flow_template(self, bridge, flow_template):
+ """Method adds flows into the vswitch based on given flow template
+ and configuration of multistream feature.
+ """
+ if ('pre_installed_flows' in self._traffic and
+ self._traffic['pre_installed_flows'].lower() == 'yes' and
+ 'multistream' in self._traffic and self._traffic['multistream'] > 0 and
+ 'stream_type' in self._traffic):
+ # multistream feature is enabled and flows should be inserted into OVS
+ # so generate flows based on template and multistream configuration
+ if self._traffic['stream_type'] == 'L2':
+ # iterate through destimation MAC address
+ dst_mac_value = netaddr.EUI(self._traffic['l2']['dstmac']).value
+ for i in range(int(self._traffic['multistream'])):
+ tmp_mac = netaddr.EUI(dst_mac_value + i)
+ tmp_mac.dialect = netaddr.mac_unix_expanded
+ flow_template.update({'dl_dst':tmp_mac})
+ # optimize flow insertion by usage of cache
+ self._vswitch.add_flow(bridge, flow_template, cache='on')
+ elif self._traffic['stream_type'] == 'L3':
+ # iterate through destimation IP address
+ dst_ip_value = netaddr.IPAddress(self._traffic['l3']['dstip']).value
+ for i in range(int(self._traffic['multistream'])):
+ tmp_ip = netaddr.IPAddress(dst_ip_value + i)
+ flow_template.update({'dl_type':'0x800', 'nw_dst':tmp_ip})
+ # optimize flow insertion by usage of cache
+ self._vswitch.add_flow(bridge, flow_template, cache='on')
+ elif self._traffic['stream_type'] == 'L4':
+ # read transport protocol from configuration and iterate through its destination port
+ proto = _PROTO_TCP if self._traffic['l3']['proto'].lower() == 'tcp' else _PROTO_UDP
+ for i in range(int(self._traffic['multistream'])):
+ flow_template.update({'dl_type':'0x800', 'nw_proto':proto, 'tp_dst':i})
+ # optimize flow insertion by usage of cache
+ self._vswitch.add_flow(bridge, flow_template, cache='on')
+ else:
+ self._logger.error('Stream type is set to uknown value %s', self._traffic['stream_type'])
+ # insert cached flows into the OVS
+ self._vswitch.add_flow(bridge, [], cache='flush')
+ else:
+ self._vswitch.add_flow(bridge, flow_template)
Code Review / vswitchperf.git / blobdiff