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-rw-r--r--core/vswitch_controller_p2p.py49
1 files changed, 47 insertions, 2 deletions
diff --git a/core/vswitch_controller_p2p.py b/core/vswitch_controller_p2p.py
index 236a443a..91c4e8a0 100644
--- a/core/vswitch_controller_p2p.py
+++ b/core/vswitch_controller_p2p.py
@@ -16,6 +16,7 @@
"""
import logging
+import netaddr
from core.vswitch_controller import IVswitchController
from conf import settings
@@ -24,6 +25,9 @@ _FLOW_TEMPLATE = {
'idle_timeout': '0'
}
+_PROTO_TCP = 6
+_PROTO_UDP = 17
+
class VswitchControllerP2P(IVswitchController):
"""VSwitch controller for P2P deployment scenario.
@@ -79,12 +83,12 @@ class VswitchControllerP2P(IVswitchController):
flow.update({'table':'1', 'priority':'1', 'in_port':'1',
'actions': ['write_actions(output:2)', 'write_metadata:2',
'goto_table:2']})
- self._vswitch.add_flow(bridge, flow)
+ 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:1',
'goto_table:2']})
- self._vswitch.add_flow(bridge, flow)
+ 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
@@ -129,3 +133,44 @@ class VswitchControllerP2P(IVswitchController):
"""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)