diff options
Diffstat (limited to 'core/vswitch_controller_p2p.py')
| -rw-r--r-- | core/vswitch_controller_p2p.py | 49 |
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) |