9f1f1726d0
After forking from Ryu, the namespace needs to change from 'ryu' to 'os_ken' so that it won't collide with the namespace of the old library. Change-Id: I807a8785e525cc02825d15a1a01eec3d5d20cce4
107 lines
3.8 KiB
Python
107 lines
3.8 KiB
Python
# Copyright (C) 2016 Nippon Telegraph and Telephone 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.
|
|
|
|
from os_ken.base import app_manager
|
|
from os_ken.controller import ofp_event
|
|
from os_ken.controller.handler import CONFIG_DISPATCHER
|
|
from os_ken.controller.handler import MAIN_DISPATCHER
|
|
from os_ken.controller.handler import set_ev_cls
|
|
from os_ken.ofproto import ofproto_v1_3
|
|
from os_ken.lib import lacplib
|
|
from os_ken.lib.dpid import str_to_dpid
|
|
from os_ken.lib.packet import packet
|
|
from os_ken.lib.packet import ethernet
|
|
from os_ken.app import simple_switch_13
|
|
|
|
|
|
class SimpleSwitchLacp13(simple_switch_13.SimpleSwitch13):
|
|
OFP_VERSIONS = [ofproto_v1_3.OFP_VERSION]
|
|
_CONTEXTS = {'lacplib': lacplib.LacpLib}
|
|
|
|
def __init__(self, *args, **kwargs):
|
|
super(SimpleSwitchLacp13, self).__init__(*args, **kwargs)
|
|
self.mac_to_port = {}
|
|
self._lacp = kwargs['lacplib']
|
|
self._lacp.add(
|
|
dpid=str_to_dpid('0000000000000001'), ports=[1, 2])
|
|
|
|
def del_flow(self, datapath, match):
|
|
ofproto = datapath.ofproto
|
|
parser = datapath.ofproto_parser
|
|
|
|
mod = parser.OFPFlowMod(datapath=datapath,
|
|
command=ofproto.OFPFC_DELETE,
|
|
out_port=ofproto.OFPP_ANY,
|
|
out_group=ofproto.OFPG_ANY,
|
|
match=match)
|
|
datapath.send_msg(mod)
|
|
|
|
@set_ev_cls(lacplib.EventPacketIn, MAIN_DISPATCHER)
|
|
def _packet_in_handler(self, ev):
|
|
msg = ev.msg
|
|
datapath = msg.datapath
|
|
ofproto = datapath.ofproto
|
|
parser = datapath.ofproto_parser
|
|
in_port = msg.match['in_port']
|
|
|
|
pkt = packet.Packet(msg.data)
|
|
eth = pkt.get_protocols(ethernet.ethernet)[0]
|
|
|
|
dst = eth.dst
|
|
src = eth.src
|
|
|
|
dpid = datapath.id
|
|
self.mac_to_port.setdefault(dpid, {})
|
|
|
|
self.logger.info("packet in %s %s %s %s", dpid, src, dst, in_port)
|
|
|
|
# learn a mac address to avoid FLOOD next time.
|
|
self.mac_to_port[dpid][src] = in_port
|
|
|
|
if dst in self.mac_to_port[dpid]:
|
|
out_port = self.mac_to_port[dpid][dst]
|
|
else:
|
|
out_port = ofproto.OFPP_FLOOD
|
|
|
|
actions = [parser.OFPActionOutput(out_port)]
|
|
|
|
# install a flow to avoid packet_in next time
|
|
if out_port != ofproto.OFPP_FLOOD:
|
|
match = parser.OFPMatch(in_port=in_port, eth_dst=dst)
|
|
self.add_flow(datapath, 1, match, actions)
|
|
|
|
data = None
|
|
if msg.buffer_id == ofproto.OFP_NO_BUFFER:
|
|
data = msg.data
|
|
|
|
out = parser.OFPPacketOut(datapath=datapath, buffer_id=msg.buffer_id,
|
|
in_port=in_port, actions=actions, data=data)
|
|
datapath.send_msg(out)
|
|
|
|
@set_ev_cls(lacplib.EventSlaveStateChanged, MAIN_DISPATCHER)
|
|
def _slave_state_changed_handler(self, ev):
|
|
datapath = ev.datapath
|
|
dpid = datapath.id
|
|
port_no = ev.port
|
|
enabled = ev.enabled
|
|
self.logger.info("slave state changed port: %d enabled: %s",
|
|
port_no, enabled)
|
|
if dpid in self.mac_to_port:
|
|
for mac in self.mac_to_port[dpid]:
|
|
match = datapath.ofproto_parser.OFPMatch(eth_dst=mac)
|
|
self.del_flow(datapath, match)
|
|
del self.mac_to_port[dpid]
|
|
self.mac_to_port.setdefault(dpid, {})
|