1
# Copyright (C) 2012 Nippon Telegraph and Telephone Corporation.
3
# Licensed under the Apache License, Version 2.0 (the "License");
4
# you may not use this file except in compliance with the License.
5
# You may obtain a copy of the License at
7
# http://www.apache.org/licenses/LICENSE-2.0
9
# Unless required by applicable law or agreed to in writing, software
10
# distributed under the License is distributed on an "AS IS" BASIS,
11
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
13
# See the License for the specific language governing permissions and
14
# limitations under the License.
19
from ryu.base import app_manager
20
from ryu.controller import ofp_event
21
from ryu.controller import dpset
22
from ryu.controller.handler import MAIN_DISPATCHER
23
from ryu.controller.handler import set_ev_cls
24
from ryu.ofproto import ofproto_v1_2
25
from ryu.ofproto import ether
26
from ryu.lib.mac import haddr_to_str
29
LOG = logging.getLogger(__name__)
32
class RunTestMininet(app_manager.RyuApp):
34
_CONTEXTS = {'dpset': dpset.DPSet}
35
OFP_VERSIONS = [ofproto_v1_2.OFP_VERSION]
37
def __init__(self, *args, **kwargs):
38
super(RunTestMininet, self).__init__(*args, **kwargs)
40
def _add_flow(self, dp, match, actions):
41
inst = [dp.ofproto_parser.OFPInstructionActions(
42
dp.ofproto.OFPIT_APPLY_ACTIONS, actions)]
44
mod = dp.ofproto_parser.OFPFlowMod(
45
dp, cookie=0, cookie_mask=0, table_id=0,
46
command=dp.ofproto.OFPFC_ADD, idle_timeout=0, hard_timeout=0,
47
priority=0xff, buffer_id=0xffffffff,
48
out_port=dp.ofproto.OFPP_ANY, out_group=dp.ofproto.OFPG_ANY,
49
flags=0, match=match, instructions=inst)
53
def _define_flow(self, dp):
57
eth_IP = ether.ETH_TYPE_IP
58
eth_MPLS = ether.ETH_TYPE_MPLS
61
LOG.debug("--- add_flow PopMPLS")
63
match = dp.ofproto_parser.OFPMatch()
64
match.set_in_port(in_port)
65
match.set_dl_type(eth_MPLS)
66
match.set_mpls_label(m_label)
67
actions = [dp.ofproto_parser.OFPActionPopMpls(eth_IP),
68
dp.ofproto_parser.OFPActionOutput(out_port, 0)]
69
self._add_flow(dp, match, actions)
72
LOG.debug("--- add_flow PushMPLS")
74
match = dp.ofproto_parser.OFPMatch()
75
match.set_in_port(in_port)
76
match.set_dl_type(eth_IP)
77
f = dp.ofproto_parser.OFPMatchField.make(
78
dp.ofproto.OXM_OF_MPLS_LABEL, s_label)
79
actions = [dp.ofproto_parser.OFPActionPushMpls(eth_MPLS),
80
dp.ofproto_parser.OFPActionSetField(f),
81
dp.ofproto_parser.OFPActionOutput(out_port, 0)]
82
self._add_flow(dp, match, actions)
84
# MPLS(100) -> PushMPLS(200)
85
LOG.debug("--- add_flow PushMPLS")
88
match = dp.ofproto_parser.OFPMatch()
89
match.set_in_port(in_port)
90
match.set_dl_type(eth_MPLS)
91
match.set_mpls_label(m_label)
92
f = dp.ofproto_parser.OFPMatchField.make(
93
dp.ofproto.OXM_OF_MPLS_LABEL, s_label)
94
actions = [dp.ofproto_parser.OFPActionPushMpls(eth_MPLS),
95
dp.ofproto_parser.OFPActionSetField(f),
96
dp.ofproto_parser.OFPActionOutput(out_port, 0)]
97
self._add_flow(dp, match, actions)
99
# MPLS(1000):MPLS -> PopMPLS
100
# LOG.debug("--- add_flow PopMPLS")
101
# SKIP: ovs not supported
103
match = dp.ofproto_parser.OFPMatch()
104
match.set_in_port(in_port)
105
match.set_dl_type(eth_MPLS)
106
match.set_mpls_label(m_label)
107
actions = [dp.ofproto_parser.OFPActionPopMpls(eth_MPLS),
108
dp.ofproto_parser.OFPActionOutput(out_port, 0)]
109
# self._add_flow(dp, match, actions)
111
@set_ev_cls(dpset.EventDP, dpset.DPSET_EV_DISPATCHER)
112
def handler_datapath(self, ev):
114
self._define_flow(ev.dp)
116
@set_ev_cls(ofp_event.EventOFPPacketIn, MAIN_DISPATCHER)
117
def packet_in_handler(self, ev):
119
dst, src, eth_type = struct.unpack_from('!6s6sH', buffer(msg.data), 0)
120
in_port = msg.match.fields[0].value
122
LOG.info("----------------------------------------")
123
LOG.info("* PacketIn")
124
LOG.info("in_port=%d, eth_type: %s", in_port, hex(eth_type))
125
LOG.info("packet reason=%d buffer_id=%d", msg.reason, msg.buffer_id)
126
LOG.info("packet in datapath_id=%s src=%s dst=%s",
127
msg.datapath.id, haddr_to_str(src), haddr_to_str(dst))