openstack/os-ken
Code Issues Proposed changes
e330e439b8
os-ken/ryu/ofproto/ofproto_v1_3_parser.py
YAMAMOTO Takashi 72a06f6f60 Move msg_pack_into from ofproto to lib 
A motivation of this change is a better modularity.
I.e. Make packet lib independent from ofproto.

Signed-off-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
2015-02-16 13:05:32 +09:00

6048 lines
214 KiB
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# Copyright (C) 2012 Nippon Telegraph and Telephone Corporation.
# Copyright (C) 2012, 2013 Isaku Yamahata <yamahata at valinux co jp>
#
# 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.
"""
This module implements OpenFlow 1.3.x.
This module also implements some of extensions shown in
"OpenFlow Extensions for 1.3.X Pack 1".
Namely, the following extensions are implemented.
- EXT-236 Bad flow entry priority error Extension
- EXT-237 Set async config error Extension
- EXT-256 PBB UCA header field Extension
- EXT-260 Duplicate instruction error Extension
- EXT-264 Multipart timeout errors Extension
The following extensions are partially implemented.
- EXT-187 Flow entry notifications Extension (ONFMP_FLOW_MONITOR only)
- EXT-230 Bundle Extension (Error codes only)
- EXT-232 Table synchronisation Extension (Error codes only)
The following extensions are not implemented yet.
- EXT-191 Role Status Extension
- EXT-192-e Flow entry eviction Extension
- EXT-192-v Vacancy events Extension
"""
import struct
import itertools
from ryu.lib import addrconv
from ryu.lib import mac
from ryu.lib.pack_utils import msg_pack_into
from ryu import utils
from ofproto_parser import StringifyMixin, MsgBase, msg_str_attr
from . import ether
from . import nicira_ext
from . import ofproto_parser
from . import ofproto_common
from . import ofproto_v1_3 as ofproto
import logging
LOG = logging.getLogger('ryu.ofproto.ofproto_v1_3_parser')
_MSG_PARSERS = {}
def _set_msg_type(msg_type):
def _set_cls_msg_type(cls):
cls.cls_msg_type = msg_type
return cls
return _set_cls_msg_type
def _register_parser(cls):
'''class decorator to register msg parser'''
assert cls.cls_msg_type is not None
assert cls.cls_msg_type not in _MSG_PARSERS
_MSG_PARSERS[cls.cls_msg_type] = cls.parser
return cls
@ofproto_parser.register_msg_parser(ofproto.OFP_VERSION)
def msg_parser(datapath, version, msg_type, msg_len, xid, buf):
parser = _MSG_PARSERS.get(msg_type)
return parser(datapath, version, msg_type, msg_len, xid, buf)
@_register_parser
@_set_msg_type(ofproto.OFPT_HELLO)
class OFPHello(MsgBase):
"""
Hello message
When connection is started, the hello message is exchanged between a
switch and a controller.
This message is handled by the Ryu framework, so the Ryu application
do not need to process this typically.
========== =========================================================
Attribute Description
========== =========================================================
elements list of ``OFPHelloElemVersionBitmap`` instance
========== =========================================================
"""
def __init__(self, datapath, elements=[]):
super(OFPHello, self).__init__(datapath)
self.elements = elements
@classmethod
def parser(cls, datapath, version, msg_type, msg_len, xid, buf):
msg = super(OFPHello, cls).parser(datapath, version, msg_type,
msg_len, xid, buf)
offset = ofproto.OFP_HELLO_HEADER_SIZE
elems = []
while offset < msg.msg_len:
type_, length = struct.unpack_from(
ofproto.OFP_HELLO_ELEM_HEADER_PACK_STR, msg.buf, offset)
# better to register Hello Element classes but currently
# Only VerisonBitmap is supported so let's be simple.
if type_ == ofproto.OFPHET_VERSIONBITMAP:
elem = OFPHelloElemVersionBitmap.parser(msg.buf, offset)
elems.append(elem)
offset += length
msg.elements = elems
return msg
class OFPHelloElemVersionBitmap(StringifyMixin):
"""
Version bitmap Hello Element
========== =========================================================
Attribute Description
========== =========================================================
versions list of versions of OpenFlow protocol a device supports
========== =========================================================
"""
def __init__(self, versions, type_=None, length=None):
super(OFPHelloElemVersionBitmap, self).__init__()
self.type = ofproto.OFPHET_VERSIONBITMAP
self.length = None
self._bitmaps = None
self.versions = versions
@classmethod
def parser(cls, buf, offset):
type_, length = struct.unpack_from(
ofproto.OFP_HELLO_ELEM_VERSIONBITMAP_HEADER_PACK_STR,
buf, offset)
assert type_ == ofproto.OFPHET_VERSIONBITMAP
bitmaps_len = (length -
ofproto.OFP_HELLO_ELEM_VERSIONBITMAP_HEADER_SIZE)
offset += ofproto.OFP_HELLO_ELEM_VERSIONBITMAP_HEADER_SIZE
bitmaps = []
while bitmaps_len >= 4:
bitmap = struct.unpack_from('!I', buf, offset)
bitmaps.append(bitmap[0])
offset += 4
bitmaps_len -= 4
versions = [i * 32 + shift
for i, bitmap in enumerate(bitmaps)
for shift in range(31) if bitmap & (1 << shift)]
elem = cls(versions)
elem.length = length
elem._bitmaps = bitmaps
return elem
@_register_parser
@_set_msg_type(ofproto.OFPT_ERROR)
class OFPErrorMsg(MsgBase):
"""
Error message
The switch notifies controller of problems by this message.
========== =========================================================
Attribute Description
========== =========================================================
type High level type of error
code Details depending on the type
data Variable length data depending on the type and code
========== =========================================================
``type`` attribute corresponds to ``type_`` parameter of __init__.
Types and codes are defined in ``ryu.ofproto.ofproto``.
============================= ===========
Type Code
============================= ===========
OFPET_HELLO_FAILED OFPHFC_*
OFPET_BAD_REQUEST OFPBRC_*
OFPET_BAD_ACTION OFPBAC_*
OFPET_BAD_INSTRUCTION OFPBIC_*
OFPET_BAD_MATCH OFPBMC_*
OFPET_FLOW_MOD_FAILED OFPFMFC_*
OFPET_GROUP_MOD_FAILED OFPGMFC_*
OFPET_PORT_MOD_FAILED OFPPMFC_*
OFPET_TABLE_MOD_FAILED OFPTMFC_*
OFPET_QUEUE_OP_FAILED OFPQOFC_*
OFPET_SWITCH_CONFIG_FAILED OFPSCFC_*
OFPET_ROLE_REQUEST_FAILED OFPRRFC_*
OFPET_METER_MOD_FAILED OFPMMFC_*
OFPET_TABLE_FEATURES_FAILED OFPTFFC_*
OFPET_EXPERIMENTER N/A
============================= ===========
Example::
@set_ev_cls(ofp_event.EventOFPErrorMsg,
[HANDSHAKE_DISPATCHER, CONFIG_DISPATCHER, MAIN_DISPATCHER])
def error_msg_handler(self, ev):
msg = ev.msg
self.logger.debug('OFPErrorMsg received: type=0x%02x code=0x%02x '
'message=%s',
msg.type, msg.code, utils.hex_array(msg.data))
"""
def __init__(self, datapath, type_=None, code=None, data=None):
super(OFPErrorMsg, self).__init__(datapath)
self.type = type_
self.code = code
self.data = data
@classmethod
def parser(cls, datapath, version, msg_type, msg_len, xid, buf):
type_, = struct.unpack_from('!H', buffer(buf),
ofproto.OFP_HEADER_SIZE)
if type_ == ofproto.OFPET_EXPERIMENTER:
return OFPErrorExperimenterMsg.parser(datapath, version, msg_type,
msg_len, xid, buf)
msg = super(OFPErrorMsg, cls).parser(datapath, version, msg_type,
msg_len, xid, buf)
msg.type, msg.code = struct.unpack_from(
ofproto.OFP_ERROR_MSG_PACK_STR, msg.buf,
ofproto.OFP_HEADER_SIZE)
msg.data = msg.buf[ofproto.OFP_ERROR_MSG_SIZE:]
return msg
def _serialize_body(self):
assert self.data is not None
msg_pack_into(ofproto.OFP_ERROR_MSG_PACK_STR, self.buf,
ofproto.OFP_HEADER_SIZE, self.type, self.code)
self.buf += self.data
class OFPErrorExperimenterMsg(MsgBase):
def __init__(self, datapath, type_=None, exp_type=None, experimenter=None,
data=None):
super(OFPErrorExperimenterMsg, self).__init__(datapath)
self.type = ofproto.OFPET_EXPERIMENTER
self.exp_type = exp_type
self.experimenter = experimenter
self.data = data
@classmethod
def parser(cls, datapath, version, msg_type, msg_len, xid, buf):
cls.cls_msg_type = msg_type
msg = super(OFPErrorExperimenterMsg, cls).parser(
datapath, version, msg_type, msg_len, xid, buf)
msg.type, msg.exp_type, msg.experimenter = struct.unpack_from(
ofproto.OFP_ERROR_EXPERIMENTER_MSG_PACK_STR, msg.buf,
ofproto.OFP_HEADER_SIZE)
msg.data = msg.buf[ofproto.OFP_ERROR_EXPERIMENTER_MSG_SIZE:]
return msg
def _serialize_body(self):
assert self.data is not None
msg_pack_into(ofproto.OFP_ERROR_EXPERIMENTER_MSG_PACK_STR,
self.buf, ofproto.OFP_HEADER_SIZE,
self.type, self.exp_type, self.experimenter)
self.buf += self.data
@_register_parser
@_set_msg_type(ofproto.OFPT_ECHO_REQUEST)
class OFPEchoRequest(MsgBase):
"""
Echo request message
This message is handled by the Ryu framework, so the Ryu application
do not need to process this typically.
========== =========================================================
Attribute Description
========== =========================================================
data An arbitrary length data
========== =========================================================
Example::
def send_echo_request(self, datapath, data):
ofp = datapath.ofproto
ofp_parser = datapath.ofproto_parser
req = ofp_parser.OFPEchoRequest(datapath, data)
datapath.send_msg(req)
@set_ev_cls(ofp_event.EventOFPEchoRequest,
[HANDSHAKE_DISPATCHER, CONFIG_DISPATCHER, MAIN_DISPATCHER])
def echo_request_handler(self, ev):
self.logger.debug('OFPEchoRequest received: data=%s',
utils.hex_array(ev.msg.data))
"""
def __init__(self, datapath, data=None):
super(OFPEchoRequest, self).__init__(datapath)
self.data = data
@classmethod
def parser(cls, datapath, version, msg_type, msg_len, xid, buf):
msg = super(OFPEchoRequest, cls).parser(datapath, version, msg_type,
msg_len, xid, buf)
msg.data = msg.buf[ofproto.OFP_HEADER_SIZE:]
return msg
def _serialize_body(self):
if self.data is not None:
self.buf += self.data
@_register_parser
@_set_msg_type(ofproto.OFPT_ECHO_REPLY)
class OFPEchoReply(MsgBase):
"""
Echo reply message
This message is handled by the Ryu framework, so the Ryu application
do not need to process this typically.
========== =========================================================
Attribute Description
========== =========================================================
data An arbitrary length data
========== =========================================================
Example::
def send_echo_reply(self, datapath, data):
ofp = datapath.ofproto
ofp_parser = datapath.ofproto_parser
reply = ofp_parser.OFPEchoReply(datapath, data)
datapath.send_msg(reply)
@set_ev_cls(ofp_event.EventOFPEchoReply,
[HANDSHAKE_DISPATCHER, CONFIG_DISPATCHER, MAIN_DISPATCHER])
def echo_reply_handler(self, ev):
self.logger.debug('OFPEchoReply received: data=%s',
utils.hex_array(ev.msg.data))
"""
def __init__(self, datapath, data=None):
super(OFPEchoReply, self).__init__(datapath)
self.data = data
@classmethod
def parser(cls, datapath, version, msg_type, msg_len, xid, buf):
msg = super(OFPEchoReply, cls).parser(datapath, version, msg_type,
msg_len, xid, buf)
msg.data = msg.buf[ofproto.OFP_HEADER_SIZE:]
return msg
def _serialize_body(self):
assert self.data is not None
self.buf += self.data
@_register_parser
@_set_msg_type(ofproto.OFPT_EXPERIMENTER)
class OFPExperimenter(MsgBase):
"""
Experimenter extension message
============= =========================================================
Attribute Description
============= =========================================================
experimenter Experimenter ID
exp_type Experimenter defined
data Experimenter defined arbitrary additional data
============= =========================================================
"""
def __init__(self, datapath, experimenter=None, exp_type=None, data=None):
super(OFPExperimenter, self).__init__(datapath)
self.experimenter = experimenter
self.exp_type = exp_type
self.data = data
@classmethod
def parser(cls, datapath, version, msg_type, msg_len, xid, buf):
msg = super(OFPExperimenter, cls).parser(datapath, version,
msg_type, msg_len,
xid, buf)
(msg.experimenter, msg.exp_type) = struct.unpack_from(
ofproto.OFP_EXPERIMENTER_HEADER_PACK_STR, msg.buf,
ofproto.OFP_HEADER_SIZE)
msg.data = msg.buf[ofproto.OFP_EXPERIMENTER_HEADER_SIZE:]
return msg
def _serialize_body(self):
assert self.data is not None
msg_pack_into(ofproto.OFP_EXPERIMENTER_HEADER_PACK_STR,
self.buf, ofproto.OFP_HEADER_SIZE,
self.experimenter, self.exp_type)
self.buf += self.data
@_set_msg_type(ofproto.OFPT_FEATURES_REQUEST)
class OFPFeaturesRequest(MsgBase):
"""
Features request message
The controller sends a feature request to the switch upon session
establishment.
This message is handled by the Ryu framework, so the Ryu application
do not need to process this typically.
Example::
def send_features_request(self, datapath):
ofp_parser = datapath.ofproto_parser
req = ofp_parser.OFPFeaturesRequest(datapath)
datapath.send_msg(req)
"""
def __init__(self, datapath):
super(OFPFeaturesRequest, self).__init__(datapath)
@_register_parser
@_set_msg_type(ofproto.OFPT_FEATURES_REPLY)
class OFPSwitchFeatures(MsgBase):
"""
Features reply message
The switch responds with a features reply message to a features
request.
This message is handled by the Ryu framework, so the Ryu application
do not need to process this typically.
Example::
@set_ev_cls(ofp_event.EventOFPSwitchFeatures, CONFIG_DISPATCHER)
def switch_features_handler(self, ev):
msg = ev.msg
self.logger.debug('OFPSwitchFeatures received: '
'datapath_id=0x%016x n_buffers=%d '
'n_tables=%d auxiliary_id=%d '
'capabilities=0x%08x',
msg.datapath_id, msg.n_buffers, msg.n_tables,
msg.auxiliary_id, msg.capabilities)
"""
def __init__(self, datapath, datapath_id=None, n_buffers=None,
n_tables=None, auxiliary_id=None, capabilities=None):
super(OFPSwitchFeatures, self).__init__(datapath)
self.datapath_id = datapath_id
self.n_buffers = n_buffers
self.n_tables = n_tables
self.auxiliary_id = auxiliary_id
self.capabilities = capabilities
@classmethod
def parser(cls, datapath, version, msg_type, msg_len, xid, buf):
msg = super(OFPSwitchFeatures, cls).parser(datapath, version, msg_type,
msg_len, xid, buf)
(msg.datapath_id,
msg.n_buffers,
msg.n_tables,
msg.auxiliary_id,
msg.capabilities,
msg._reserved) = struct.unpack_from(
ofproto.OFP_SWITCH_FEATURES_PACK_STR, msg.buf,
ofproto.OFP_HEADER_SIZE)
return msg
@_set_msg_type(ofproto.OFPT_GET_CONFIG_REQUEST)
class OFPGetConfigRequest(MsgBase):
"""
Get config request message
The controller sends a get config request to query configuration
parameters in the switch.
Example::
def send_get_config_request(self, datapath):
ofp_parser = datapath.ofproto_parser
req = ofp_parser.OFPGetConfigRequest(datapath)
datapath.send_msg(req)
"""
def __init__(self, datapath):
super(OFPGetConfigRequest, self).__init__(datapath)
@_register_parser
@_set_msg_type(ofproto.OFPT_GET_CONFIG_REPLY)
class OFPGetConfigReply(MsgBase):
"""
Get config reply message
The switch responds to a configuration request with a get config reply
message.
============= =========================================================
Attribute Description
============= =========================================================
flags Bitmap of the following flags.
| OFPC_FRAG_NORMAL
| OFPC_FRAG_DROP
| OFPC_FRAG_REASM
| OFPC_FRAG_MASK
miss_send_len Max bytes of new flow that datapath should send to the
controller
============= =========================================================
Example::
@set_ev_cls(ofp_event.EventOFPGetConfigReply, MAIN_DISPATCHER)
def get_config_reply_handler(self, ev):
msg = ev.msg
dp = msg.datapath
ofp = dp.ofproto
flags = []
if msg.flags & ofp.OFPC_FRAG_NORMAL:
flags.append('NORMAL')
if msg.flags & ofp.OFPC_FRAG_DROP:
flags.append('DROP')
if msg.flags & ofp.OFPC_FRAG_REASM:
flags.append('REASM')
self.logger.debug('OFPGetConfigReply received: '
'flags=%s miss_send_len=%d',
','.join(flags), msg.miss_send_len)
"""
def __init__(self, datapath, flags=None, miss_send_len=None):
super(OFPGetConfigReply, self).__init__(datapath)
self.flags = flags
self.miss_send_len = miss_send_len
@classmethod
def parser(cls, datapath, version, msg_type, msg_len, xid, buf):
msg = super(OFPGetConfigReply, cls).parser(datapath, version, msg_type,
msg_len, xid, buf)
msg.flags, msg.miss_send_len = struct.unpack_from(
ofproto.OFP_SWITCH_CONFIG_PACK_STR, msg.buf,
ofproto.OFP_HEADER_SIZE)
return msg
@_set_msg_type(ofproto.OFPT_SET_CONFIG)
class OFPSetConfig(MsgBase):
"""
Set config request message
The controller sends a set config request message to set configuraion
parameters.
============= =========================================================
Attribute Description
============= =========================================================
flags Bitmap of the following flags.
| OFPC_FRAG_NORMAL
| OFPC_FRAG_DROP
| OFPC_FRAG_REASM
miss_send_len Max bytes of new flow that datapath should send to the
controller
============= =========================================================
Example::
def send_set_config(self, datapath):
ofp = datapath.ofproto
ofp_parser = datapath.ofproto_parser
req = ofp_parser.OFPSetConfig(datapath, ofp.OFPC_FRAG_NORMAL, 256)
datapath.send_msg(req)
"""
def __init__(self, datapath, flags=0, miss_send_len=0):
super(OFPSetConfig, self).__init__(datapath)
self.flags = flags
self.miss_send_len = miss_send_len
def _serialize_body(self):
assert self.flags is not None
assert self.miss_send_len is not None
msg_pack_into(ofproto.OFP_SWITCH_CONFIG_PACK_STR,
self.buf, ofproto.OFP_HEADER_SIZE,
self.flags, self.miss_send_len)
UINT64_MAX = (1 << 64) - 1
UINT32_MAX = (1 << 32) - 1
UINT16_MAX = (1 << 16) - 1
class Flow(object):
def __init__(self):
self.in_port = 0
self.in_phy_port = 0
self.metadata = 0
self.dl_dst = mac.DONTCARE
self.dl_src = mac.DONTCARE
self.dl_type = 0
self.vlan_vid = 0
self.vlan_pcp = 0
self.ip_dscp = 0
self.ip_ecn = 0
self.ip_proto = 0
self.ipv4_src = 0
self.ipv4_dst = 0
self.tcp_src = 0
self.tcp_dst = 0
self.udp_src = 0
self.udp_dst = 0
self.sctp_src = 0
self.sctp_dst = 0
self.icmpv4_type = 0
self.icmpv4_code = 0
self.arp_op = 0
self.arp_spa = 0
self.arp_tpa = 0
self.arp_sha = 0
self.arp_tha = 0
self.ipv6_src = []
self.ipv6_dst = []
self.ipv6_flabel = 0
self.icmpv6_type = 0
self.icmpv6_code = 0
self.ipv6_nd_target = []
self.ipv6_nd_sll = 0
self.ipv6_nd_tll = 0
self.mpls_label = 0
self.mpls_tc = 0
self.mpls_bos = 0
self.pbb_isid = 0
self.tunnel_id = 0
self.ipv6_exthdr = 0
class FlowWildcards(object):
def __init__(self):
self.metadata_mask = 0
self.dl_dst_mask = 0
self.dl_src_mask = 0
self.vlan_vid_mask = 0
self.ipv4_src_mask = 0
self.ipv4_dst_mask = 0
self.arp_spa_mask = 0
self.arp_tpa_mask = 0
self.arp_sha_mask = 0
self.arp_tha_mask = 0
self.ipv6_src_mask = []
self.ipv6_dst_mask = []
self.ipv6_flabel_mask = 0
self.pbb_isid_mask = 0
self.tunnel_id_mask = 0
self.ipv6_exthdr_mask = 0
self.wildcards = (1 << 64) - 1
def ft_set(self, shift):
self.wildcards &= ~(1 << shift)
def ft_test(self, shift):
return not self.wildcards & (1 << shift)
class OFPMatch(StringifyMixin):
"""
Flow Match Structure
This class is implementation of the flow match structure having
compose/query API.
There are new API and old API for compatibility. the old API is
supposed to be removed later.
You can define the flow match by the keyword arguments.
The following arguments are available.
================ =============== ==================================
Argument Value Description
================ =============== ==================================
in_port Integer 32bit Switch input port
in_phy_port Integer 32bit Switch physical input port
metadata Integer 64bit Metadata passed between tables
eth_dst MAC address Ethernet destination address
eth_src MAC address Ethernet source address
eth_type Integer 16bit Ethernet frame type
vlan_vid Integer 16bit VLAN id
vlan_pcp Integer 8bit VLAN priority
ip_dscp Integer 8bit IP DSCP (6 bits in ToS field)
ip_ecn Integer 8bit IP ECN (2 bits in ToS field)
ip_proto Integer 8bit IP protocol
ipv4_src IPv4 address IPv4 source address
ipv4_dst IPv4 address IPv4 destination address
tcp_src Integer 16bit TCP source port
tcp_dst Integer 16bit TCP destination port
udp_src Integer 16bit UDP source port
udp_dst Integer 16bit UDP destination port
sctp_src Integer 16bit SCTP source port
sctp_dst Integer 16bit SCTP destination port
icmpv4_type Integer 8bit ICMP type
icmpv4_code Integer 8bit ICMP code
arp_op Integer 16bit ARP opcode
arp_spa IPv4 address ARP source IPv4 address
arp_tpa IPv4 address ARP target IPv4 address
arp_sha MAC address ARP source hardware address
arp_tha MAC address ARP target hardware address
ipv6_src IPv6 address IPv6 source address
ipv6_dst IPv6 address IPv6 destination address
ipv6_flabel Integer 32bit IPv6 Flow Label
icmpv6_type Integer 8bit ICMPv6 type
icmpv6_code Integer 8bit ICMPv6 code
ipv6_nd_target IPv6 address Target address for ND
ipv6_nd_sll MAC address Source link-layer for ND
ipv6_nd_tll MAC address Target link-layer for ND
mpls_label Integer 32bit MPLS label
mpls_tc Integer 8bit MPLS TC
mpls_bos Integer 8bit MPLS BoS bit
pbb_isid Integer 24bit PBB I-SID
tunnel_id Integer 64bit Logical Port Metadata
ipv6_exthdr Integer 16bit IPv6 Extension Header pseudo-field
================ =============== ==================================
Example::
>>> # compose
>>> match = parser.OFPMatch(
... in_port=1,
... eth_type=0x86dd,
... ipv6_src=('2001:db8:bd05:1d2:288a:1fc0:1:10ee',
... 'ffff:ffff:ffff:ffff::'),
... ipv6_dst='2001:db8:bd05:1d2:288a:1fc0:1:10ee')
>>> # query
>>> if 'ipv6_src' in match:
... print match['ipv6_src']
...
('2001:db8:bd05:1d2:288a:1fc0:1:10ee', 'ffff:ffff:ffff:ffff::')
.. Note::
For VLAN id match field, special values are defined in OpenFlow Spec.
1) Packets with and without a VLAN tag
- Example::
match = parser.OFPMatch()
- Packet Matching
====================== =====
non-VLAN-tagged MATCH
VLAN-tagged(vlan_id=3) MATCH
VLAN-tagged(vlan_id=5) MATCH
====================== =====
2) Only packets without a VLAN tag
- Example::
match = parser.OFPMatch(vlan_vid=0x0000)
- Packet Matching
====================== =====
non-VLAN-tagged MATCH
VLAN-tagged(vlan_id=3) x
VLAN-tagged(vlan_id=5) x
====================== =====
3) Only packets with a VLAN tag regardless of its value
- Example::
match = parser.OFPMatch(vlan_vid=(0x1000, 0x1000))
- Packet Matching
====================== =====
non-VLAN-tagged x
VLAN-tagged(vlan_id=3) MATCH
VLAN-tagged(vlan_id=5) MATCH
====================== =====
4) Only packets with VLAN tag and VID equal
- Example::
match = parser.OFPMatch(vlan_vid=(0x1000 | 3))
- Packet Matching
====================== =====
non-VLAN-tagged x
VLAN-tagged(vlan_id=3) MATCH
VLAN-tagged(vlan_id=5) x
====================== =====
"""
def __init__(self, type_=None, length=None, _ordered_fields=None,
**kwargs):
"""
You can define the flow match by the keyword arguments.
Please refer to ofproto.oxm_types for the key which you can
define.
"""
super(OFPMatch, self).__init__()
self._wc = FlowWildcards()
self._flow = Flow()
self.fields = []
self.type = ofproto.OFPMT_OXM
self.length = length
if _ordered_fields is not None:
assert not kwargs
self._fields2 = _ordered_fields
else:
# eg.
# OFPMatch(eth_src=('ff:ff:ff:00:00:00'), eth_type=0x800,
# ipv4_src='10.0.0.1')
kwargs = dict(ofproto.oxm_normalize_user(k, v) for
(k, v) in kwargs.iteritems())
fields = [ofproto.oxm_from_user(k, v) for (k, v)
in kwargs.iteritems()]
# assumption: sorting by OXM type values makes fields
# meet ordering requirements (eg. eth_type before ipv4_src)
fields.sort()
self._fields2 = [ofproto.oxm_to_user(n, v, m) for (n, v, m)
in fields]
def __getitem__(self, key):
return dict(self._fields2)[key]
def __contains__(self, key):
return key in dict(self._fields2)
def iteritems(self):
return dict(self._fields2).iteritems()
def get(self, key, default=None):
return dict(self._fields2).get(key, default)
def stringify_attrs(self):
yield "oxm_fields", dict(self._fields2)
def to_jsondict(self):
"""
Returns a dict expressing the flow match.
"""
# XXX old api compat
if self._composed_with_old_api():
# copy object first because serialize_old is destructive
o2 = OFPMatch()
o2.fields = self.fields[:]
# serialize and parse to fill OFPMatch._fields2
buf = bytearray()
o2.serialize(buf, 0)
o = OFPMatch.parser(str(buf), 0)
else:
o = self
body = {"oxm_fields": [ofproto.oxm_to_jsondict(k, uv) for k, uv
in o._fields2],
"length": o.length,
"type": o.type}
return {self.__class__.__name__: body}
@classmethod
def from_jsondict(cls, dict_):
"""
Returns an object which is generated from a dict.
Exception raises:
KeyError -- Unknown match field is defined in dict
"""
fields = [ofproto.oxm_from_jsondict(f) for f
in dict_['oxm_fields']]
o = OFPMatch(_ordered_fields=fields)
# XXX old api compat
# serialize and parse to fill OFPMatch.fields
buf = bytearray()
o.serialize(buf, 0)
return OFPMatch.parser(str(buf), 0)
def __str__(self):
# XXX old api compat
if self._composed_with_old_api():
# copy object first because serialize_old is destructive
o2 = OFPMatch()
o2.fields = self.fields[:]
# serialize and parse to fill OFPMatch._fields2
buf = bytearray()
o2.serialize(buf, 0)
o = OFPMatch.parser(str(buf), 0)
else:
o = self
return super(OFPMatch, o).__str__()
__repr__ = __str__
def append_field(self, header, value, mask=None):
"""
Append a match field.
========= =======================================================
Argument Description
========= =======================================================
header match field header ID which is defined automatically in
``ofproto``
value match field value
mask mask value to the match field
========= =======================================================
The available ``header`` is as follows.
====================== ===================================
Header ID Description
====================== ===================================
OXM_OF_IN_PORT Switch input port
OXM_OF_IN_PHY_PORT Switch physical input port
OXM_OF_METADATA Metadata passed between tables
OXM_OF_ETH_DST Ethernet destination address
OXM_OF_ETH_SRC Ethernet source address
OXM_OF_ETH_TYPE Ethernet frame type
OXM_OF_VLAN_VID VLAN id
OXM_OF_VLAN_PCP VLAN priority
OXM_OF_IP_DSCP IP DSCP (6 bits in ToS field)
OXM_OF_IP_ECN IP ECN (2 bits in ToS field)
OXM_OF_IP_PROTO IP protocol
OXM_OF_IPV4_SRC IPv4 source address
OXM_OF_IPV4_DST IPv4 destination address
OXM_OF_TCP_SRC TCP source port
OXM_OF_TCP_DST TCP destination port
OXM_OF_UDP_SRC UDP source port
OXM_OF_UDP_DST UDP destination port
OXM_OF_SCTP_SRC SCTP source port
OXM_OF_SCTP_DST SCTP destination port
OXM_OF_ICMPV4_TYPE ICMP type
OXM_OF_ICMPV4_CODE ICMP code
OXM_OF_ARP_OP ARP opcode
OXM_OF_ARP_SPA ARP source IPv4 address
OXM_OF_ARP_TPA ARP target IPv4 address
OXM_OF_ARP_SHA ARP source hardware address
OXM_OF_ARP_THA ARP target hardware address
OXM_OF_IPV6_SRC IPv6 source address
OXM_OF_IPV6_DST IPv6 destination address
OXM_OF_IPV6_FLABEL IPv6 Flow Label
OXM_OF_ICMPV6_TYPE ICMPv6 type
OXM_OF_ICMPV6_CODE ICMPv6 code
OXM_OF_IPV6_ND_TARGET Target address for ND
OXM_OF_IPV6_ND_SLL Source link-layer for ND
OXM_OF_IPV6_ND_TLL Target link-layer for ND
OXM_OF_MPLS_LABEL MPLS label
OXM_OF_MPLS_TC MPLS TC
OXM_OF_MPLS_BOS MPLS BoS bit
OXM_OF_PBB_ISID PBB I-SID
OXM_OF_TUNNEL_ID Logical Port Metadata
OXM_OF_IPV6_EXTHDR IPv6 Extension Header pseudo-field
====================== ===================================
"""
self.fields.append(OFPMatchField.make(header, value, mask))
def _composed_with_old_api(self):
return (self.fields and not self._fields2) or \
self._wc.__dict__ != FlowWildcards().__dict__
def serialize(self, buf, offset):
"""
Outputs the expression of the wire protocol of the flow match into
the buf.
Returns the output length.
"""
# XXX compat
if self._composed_with_old_api():
return self.serialize_old(buf, offset)
fields = [ofproto.oxm_from_user(k, uv) for (k, uv)
in self._fields2]
hdr_pack_str = '!HH'
field_offset = offset + struct.calcsize(hdr_pack_str)
for (n, value, mask) in fields:
field_offset += ofproto.oxm_serialize(n, value, mask, buf,
field_offset)
length = field_offset - offset
msg_pack_into(hdr_pack_str, buf, offset,
ofproto.OFPMT_OXM, length)
self.length = length
pad_len = utils.round_up(length, 8) - length
msg_pack_into("%dx" % pad_len, buf, field_offset)
return length + pad_len
def serialize_old(self, buf, offset):
if hasattr(self, '_serialized'):
raise Exception('serializing an OFPMatch composed with '
'old API multiple times is not supported')
self._serialized = True
if self._wc.ft_test(ofproto.OFPXMT_OFB_IN_PORT):
self.append_field(ofproto.OXM_OF_IN_PORT,
self._flow.in_port)
if self._wc.ft_test(ofproto.OFPXMT_OFB_IN_PHY_PORT):
self.append_field(ofproto.OXM_OF_IN_PHY_PORT,
self._flow.in_phy_port)
if self._wc.ft_test(ofproto.OFPXMT_OFB_METADATA):
if self._wc.metadata_mask == UINT64_MAX:
header = ofproto.OXM_OF_METADATA
else:
header = ofproto.OXM_OF_METADATA_W
self.append_field(header, self._flow.metadata,
self._wc.metadata_mask)
if self._wc.ft_test(ofproto.OFPXMT_OFB_ETH_DST):
if self._wc.dl_dst_mask:
header = ofproto.OXM_OF_ETH_DST_W
else:
header = ofproto.OXM_OF_ETH_DST
self.append_field(header, self._flow.dl_dst, self._wc.dl_dst_mask)
if self._wc.ft_test(ofproto.OFPXMT_OFB_ETH_SRC):
if self._wc.dl_src_mask:
header = ofproto.OXM_OF_ETH_SRC_W
else:
header = ofproto.OXM_OF_ETH_SRC
self.append_field(header, self._flow.dl_src, self._wc.dl_src_mask)
if self._wc.ft_test(ofproto.OFPXMT_OFB_ETH_TYPE):
self.append_field(ofproto.OXM_OF_ETH_TYPE, self._flow.dl_type)
if self._wc.ft_test(ofproto.OFPXMT_OFB_VLAN_VID):
if self._wc.vlan_vid_mask == UINT16_MAX:
header = ofproto.OXM_OF_VLAN_VID
else:
header = ofproto.OXM_OF_VLAN_VID_W
self.append_field(header, self._flow.vlan_vid,
self._wc.vlan_vid_mask)
if self._wc.ft_test(ofproto.OFPXMT_OFB_VLAN_PCP):
self.append_field(ofproto.OXM_OF_VLAN_PCP,
self._flow.vlan_pcp)
if self._wc.ft_test(ofproto.OFPXMT_OFB_IP_DSCP):
self.append_field(ofproto.OXM_OF_IP_DSCP, self._flow.ip_dscp)
if self._wc.ft_test(ofproto.OFPXMT_OFB_IP_ECN):
self.append_field(ofproto.OXM_OF_IP_ECN, self._flow.ip_ecn)
if self._wc.ft_test(ofproto.OFPXMT_OFB_IP_PROTO):
self.append_field(ofproto.OXM_OF_IP_PROTO,
self._flow.ip_proto)
if self._wc.ft_test(ofproto.OFPXMT_OFB_IPV4_SRC):
if self._wc.ipv4_src_mask == UINT32_MAX:
header = ofproto.OXM_OF_IPV4_SRC
else:
header = ofproto.OXM_OF_IPV4_SRC_W
self.append_field(header, self._flow.ipv4_src,
self._wc.ipv4_src_mask)
if self._wc.ft_test(ofproto.OFPXMT_OFB_IPV4_DST):
if self._wc.ipv4_dst_mask == UINT32_MAX:
header = ofproto.OXM_OF_IPV4_DST
else:
header = ofproto.OXM_OF_IPV4_DST_W
self.append_field(header, self._flow.ipv4_dst,
self._wc.ipv4_dst_mask)
if self._wc.ft_test(ofproto.OFPXMT_OFB_TCP_SRC):
self.append_field(ofproto.OXM_OF_TCP_SRC, self._flow.tcp_src)
if self._wc.ft_test(ofproto.OFPXMT_OFB_TCP_DST):
self.append_field(ofproto.OXM_OF_TCP_DST, self._flow.tcp_dst)
if self._wc.ft_test(ofproto.OFPXMT_OFB_UDP_SRC):
self.append_field(ofproto.OXM_OF_UDP_SRC, self._flow.udp_src)
if self._wc.ft_test(ofproto.OFPXMT_OFB_UDP_DST):
self.append_field(ofproto.OXM_OF_UDP_DST, self._flow.udp_dst)
if self._wc.ft_test(ofproto.OFPXMT_OFB_SCTP_SRC):
self.append_field(ofproto.OXM_OF_SCTP_SRC,
self._flow.sctp_src)
if self._wc.ft_test(ofproto.OFPXMT_OFB_SCTP_DST):
self.append_field(ofproto.OXM_OF_SCTP_DST,
self._flow.sctp_dst)
if self._wc.ft_test(ofproto.OFPXMT_OFB_ICMPV4_TYPE):
self.append_field(ofproto.OXM_OF_ICMPV4_TYPE,
self._flow.icmpv4_type)
if self._wc.ft_test(ofproto.OFPXMT_OFB_ICMPV4_CODE):
self.append_field(ofproto.OXM_OF_ICMPV4_CODE,
self._flow.icmpv4_code)
if self._wc.ft_test(ofproto.OFPXMT_OFB_ARP_OP):
self.append_field(ofproto.OXM_OF_ARP_OP, self._flow.arp_op)
if self._wc.ft_test(ofproto.OFPXMT_OFB_ARP_SPA):
if self._wc.arp_spa_mask == UINT32_MAX:
header = ofproto.OXM_OF_ARP_SPA
else:
header = ofproto.OXM_OF_ARP_SPA_W
self.append_field(header, self._flow.arp_spa,
self._wc.arp_spa_mask)
if self._wc.ft_test(ofproto.OFPXMT_OFB_ARP_TPA):
if self._wc.arp_tpa_mask == UINT32_MAX:
header = ofproto.OXM_OF_ARP_TPA
else:
header = ofproto.OXM_OF_ARP_TPA_W
self.append_field(header, self._flow.arp_tpa,
self._wc.arp_tpa_mask)
if self._wc.ft_test(ofproto.OFPXMT_OFB_ARP_SHA):
if self._wc.arp_sha_mask:
header = ofproto.OXM_OF_ARP_SHA_W
else:
header = ofproto.OXM_OF_ARP_SHA
self.append_field(header, self._flow.arp_sha,
self._wc.arp_sha_mask)
if self._wc.ft_test(ofproto.OFPXMT_OFB_ARP_THA):
if self._wc.arp_tha_mask:
header = ofproto.OXM_OF_ARP_THA_W
else:
header = ofproto.OXM_OF_ARP_THA
self.append_field(header, self._flow.arp_tha,
self._wc.arp_tha_mask)
if self._wc.ft_test(ofproto.OFPXMT_OFB_IPV6_SRC):
if len(self._wc.ipv6_src_mask):
header = ofproto.OXM_OF_IPV6_SRC_W
else:
header = ofproto.OXM_OF_IPV6_SRC
self.append_field(header, self._flow.ipv6_src,
self._wc.ipv6_src_mask)
if self._wc.ft_test(ofproto.OFPXMT_OFB_IPV6_DST):
if len(self._wc.ipv6_dst_mask):
header = ofproto.OXM_OF_IPV6_DST_W
else:
header = ofproto.OXM_OF_IPV6_DST
self.append_field(header, self._flow.ipv6_dst,
self._wc.ipv6_dst_mask)
if self._wc.ft_test(ofproto.OFPXMT_OFB_IPV6_FLABEL):
if self._wc.ipv6_flabel_mask == UINT32_MAX:
header = ofproto.OXM_OF_IPV6_FLABEL
else:
header = ofproto.OXM_OF_IPV6_FLABEL_W
self.append_field(header, self._flow.ipv6_flabel,
self._wc.ipv6_flabel_mask)
if self._wc.ft_test(ofproto.OFPXMT_OFB_ICMPV6_TYPE):
self.append_field(ofproto.OXM_OF_ICMPV6_TYPE,
self._flow.icmpv6_type)
if self._wc.ft_test(ofproto.OFPXMT_OFB_ICMPV6_CODE):
self.append_field(ofproto.OXM_OF_ICMPV6_CODE,
self._flow.icmpv6_code)
if self._wc.ft_test(ofproto.OFPXMT_OFB_IPV6_ND_TARGET):
self.append_field(ofproto.OXM_OF_IPV6_ND_TARGET,
self._flow.ipv6_nd_target)
if self._wc.ft_test(ofproto.OFPXMT_OFB_IPV6_ND_SLL):
self.append_field(ofproto.OXM_OF_IPV6_ND_SLL,
self._flow.ipv6_nd_sll)
if self._wc.ft_test(ofproto.OFPXMT_OFB_IPV6_ND_TLL):
self.append_field(ofproto.OXM_OF_IPV6_ND_TLL,
self._flow.ipv6_nd_tll)
if self._wc.ft_test(ofproto.OFPXMT_OFB_MPLS_LABEL):
self.append_field(ofproto.OXM_OF_MPLS_LABEL,
self._flow.mpls_label)
if self._wc.ft_test(ofproto.OFPXMT_OFB_MPLS_TC):
self.append_field(ofproto.OXM_OF_MPLS_TC,
self._flow.mpls_tc)
if self._wc.ft_test(ofproto.OFPXMT_OFB_MPLS_BOS):
self.append_field(ofproto.OXM_OF_MPLS_BOS,
self._flow.mpls_bos)
if self._wc.ft_test(ofproto.OFPXMT_OFB_PBB_ISID):
if self._wc.pbb_isid_mask:
header = ofproto.OXM_OF_PBB_ISID_W
else:
header = ofproto.OXM_OF_PBB_ISID
self.append_field(header, self._flow.pbb_isid,
self._wc.pbb_isid_mask)
if self._wc.ft_test(ofproto.OFPXMT_OFB_TUNNEL_ID):
if self._wc.tunnel_id_mask:
header = ofproto.OXM_OF_TUNNEL_ID_W
else:
header = ofproto.OXM_OF_TUNNEL_ID
self.append_field(header, self._flow.tunnel_id,
self._wc.tunnel_id_mask)
if self._wc.ft_test(ofproto.OFPXMT_OFB_IPV6_EXTHDR):
if self._wc.ipv6_exthdr_mask:
header = ofproto.OXM_OF_IPV6_EXTHDR_W
else:
header = ofproto.OXM_OF_IPV6_EXTHDR
self.append_field(header, self._flow.ipv6_exthdr,
self._wc.ipv6_exthdr_mask)
field_offset = offset + 4
for f in self.fields:
f.serialize(buf, field_offset)
field_offset += f.length
length = field_offset - offset
msg_pack_into('!HH', buf, offset, ofproto.OFPMT_OXM, length)
pad_len = utils.round_up(length, 8) - length
msg_pack_into("%dx" % pad_len, buf, field_offset)
return length + pad_len
@classmethod
def parser(cls, buf, offset):
"""
Returns an object which is generated from a buffer including the
expression of the wire protocol of the flow match.
"""
match = OFPMatch()
type_, length = struct.unpack_from('!HH', buf, offset)
match.type = type_
match.length = length
# ofp_match adjustment
offset += 4
length -= 4
# XXXcompat
cls.parser_old(match, buf, offset, length)
fields = []
while length > 0:
n, value, mask, field_len = ofproto.oxm_parse(buf, offset)
k, uv = ofproto.oxm_to_user(n, value, mask)
fields.append((k, uv))
offset += field_len
length -= field_len
match._fields2 = fields
return match
@staticmethod
def parser_old(match, buf, offset, length):
while length > 0:
field = OFPMatchField.parser(buf, offset)
offset += field.length
length -= field.length
match.fields.append(field)
def set_in_port(self, port):
self._wc.ft_set(ofproto.OFPXMT_OFB_IN_PORT)
self._flow.in_port = port
def set_in_phy_port(self, phy_port):
self._wc.ft_set(ofproto.OFPXMT_OFB_IN_PHY_PORT)
self._flow.in_phy_port = phy_port
def set_metadata(self, metadata):
self.set_metadata_masked(metadata, UINT64_MAX)
def set_metadata_masked(self, metadata, mask):
self._wc.ft_set(ofproto.OFPXMT_OFB_METADATA)
self._wc.metadata_mask = mask
self._flow.metadata = metadata & mask
def set_dl_dst(self, dl_dst):
self._wc.ft_set(ofproto.OFPXMT_OFB_ETH_DST)
self._flow.dl_dst = dl_dst
def set_dl_dst_masked(self, dl_dst, mask):
self._wc.ft_set(ofproto.OFPXMT_OFB_ETH_DST)
self._wc.dl_dst_mask = mask
# bit-wise and of the corresponding elements of dl_dst and mask
self._flow.dl_dst = mac.haddr_bitand(dl_dst, mask)
def set_dl_src(self, dl_src):
self._wc.ft_set(ofproto.OFPXMT_OFB_ETH_SRC)
self._flow.dl_src = dl_src
def set_dl_src_masked(self, dl_src, mask):
self._wc.ft_set(ofproto.OFPXMT_OFB_ETH_SRC)
self._wc.dl_src_mask = mask
self._flow.dl_src = mac.haddr_bitand(dl_src, mask)
def set_dl_type(self, dl_type):
self._wc.ft_set(ofproto.OFPXMT_OFB_ETH_TYPE)
self._flow.dl_type = dl_type
def set_vlan_vid_none(self):
self._wc.ft_set(ofproto.OFPXMT_OFB_VLAN_VID)
self._wc.vlan_vid_mask = UINT16_MAX
self._flow.vlan_vid = ofproto.OFPVID_NONE
def set_vlan_vid(self, vid):
self.set_vlan_vid_masked(vid, UINT16_MAX)
def set_vlan_vid_masked(self, vid, mask):
vid |= ofproto.OFPVID_PRESENT
self._wc.ft_set(ofproto.OFPXMT_OFB_VLAN_VID)
self._wc.vlan_vid_mask = mask
self._flow.vlan_vid = vid
def set_vlan_pcp(self, pcp):
self._wc.ft_set(ofproto.OFPXMT_OFB_VLAN_PCP)
self._flow.vlan_pcp = pcp
def set_ip_dscp(self, ip_dscp):
self._wc.ft_set(ofproto.OFPXMT_OFB_IP_DSCP)
self._flow.ip_dscp = ip_dscp
def set_ip_ecn(self, ip_ecn):
self._wc.ft_set(ofproto.OFPXMT_OFB_IP_ECN)
self._flow.ip_ecn = ip_ecn
def set_ip_proto(self, ip_proto):
self._wc.ft_set(ofproto.OFPXMT_OFB_IP_PROTO)
self._flow.ip_proto = ip_proto
def set_ipv4_src(self, ipv4_src):
self.set_ipv4_src_masked(ipv4_src, UINT32_MAX)
def set_ipv4_src_masked(self, ipv4_src, mask):
self._wc.ft_set(ofproto.OFPXMT_OFB_IPV4_SRC)
self._flow.ipv4_src = ipv4_src
self._wc.ipv4_src_mask = mask
def set_ipv4_dst(self, ipv4_dst):
self.set_ipv4_dst_masked(ipv4_dst, UINT32_MAX)
def set_ipv4_dst_masked(self, ipv4_dst, mask):
self._wc.ft_set(ofproto.OFPXMT_OFB_IPV4_DST)
self._flow.ipv4_dst = ipv4_dst
self._wc.ipv4_dst_mask = mask
def set_tcp_src(self, tcp_src):
self._wc.ft_set(ofproto.OFPXMT_OFB_TCP_SRC)
self._flow.tcp_src = tcp_src
def set_tcp_dst(self, tcp_dst):
self._wc.ft_set(ofproto.OFPXMT_OFB_TCP_DST)
self._flow.tcp_dst = tcp_dst
def set_udp_src(self, udp_src):
self._wc.ft_set(ofproto.OFPXMT_OFB_UDP_SRC)
self._flow.udp_src = udp_src
def set_udp_dst(self, udp_dst):
self._wc.ft_set(ofproto.OFPXMT_OFB_UDP_DST)
self._flow.udp_dst = udp_dst
def set_sctp_src(self, sctp_src):
self._wc.ft_set(ofproto.OFPXMT_OFB_SCTP_SRC)
self._flow.sctp_src = sctp_src
def set_sctp_dst(self, sctp_dst):
self._wc.ft_set(ofproto.OFPXMT_OFB_SCTP_DST)
self._flow.sctp_dst = sctp_dst
def set_icmpv4_type(self, icmpv4_type):
self._wc.ft_set(ofproto.OFPXMT_OFB_ICMPV4_TYPE)
self._flow.icmpv4_type = icmpv4_type
def set_icmpv4_code(self, icmpv4_code):
self._wc.ft_set(ofproto.OFPXMT_OFB_ICMPV4_CODE)
self._flow.icmpv4_code = icmpv4_code
def set_arp_opcode(self, arp_op):
self._wc.ft_set(ofproto.OFPXMT_OFB_ARP_OP)
self._flow.arp_op = arp_op
def set_arp_spa(self, arp_spa):
self.set_arp_spa_masked(arp_spa, UINT32_MAX)
def set_arp_spa_masked(self, arp_spa, mask):
self._wc.ft_set(ofproto.OFPXMT_OFB_ARP_SPA)
self._wc.arp_spa_mask = mask
self._flow.arp_spa = arp_spa
def set_arp_tpa(self, arp_tpa):
self.set_arp_tpa_masked(arp_tpa, UINT32_MAX)
def set_arp_tpa_masked(self, arp_tpa, mask):
self._wc.ft_set(ofproto.OFPXMT_OFB_ARP_TPA)
self._wc.arp_tpa_mask = mask
self._flow.arp_tpa = arp_tpa
def set_arp_sha(self, arp_sha):
self._wc.ft_set(ofproto.OFPXMT_OFB_ARP_SHA)
self._flow.arp_sha = arp_sha
def set_arp_sha_masked(self, arp_sha, mask):
self._wc.ft_set(ofproto.OFPXMT_OFB_ARP_SHA)
self._wc.arp_sha_mask = mask
self._flow.arp_sha = mac.haddr_bitand(arp_sha, mask)
def set_arp_tha(self, arp_tha):
self._wc.ft_set(ofproto.OFPXMT_OFB_ARP_THA)
self._flow.arp_tha = arp_tha
def set_arp_tha_masked(self, arp_tha, mask):
self._wc.ft_set(ofproto.OFPXMT_OFB_ARP_THA)
self._wc.arp_tha_mask = mask
self._flow.arp_tha = mac.haddr_bitand(arp_tha, mask)
def set_ipv6_src(self, src):
self._wc.ft_set(ofproto.OFPXMT_OFB_IPV6_SRC)
self._flow.ipv6_src = src
def set_ipv6_src_masked(self, src, mask):
self._wc.ft_set(ofproto.OFPXMT_OFB_IPV6_SRC)
self._wc.ipv6_src_mask = mask
self._flow.ipv6_src = [x & y for (x, y) in itertools.izip(src, mask)]
def set_ipv6_dst(self, dst):
self._wc.ft_set(ofproto.OFPXMT_OFB_IPV6_DST)
self._flow.ipv6_dst = dst
def set_ipv6_dst_masked(self, dst, mask):
self._wc.ft_set(ofproto.OFPXMT_OFB_IPV6_DST)
self._wc.ipv6_dst_mask = mask
self._flow.ipv6_dst = [x & y for (x, y) in itertools.izip(dst, mask)]
def set_ipv6_flabel(self, flabel):
self.set_ipv6_flabel_masked(flabel, UINT32_MAX)
def set_ipv6_flabel_masked(self, flabel, mask):
self._wc.ft_set(ofproto.OFPXMT_OFB_IPV6_FLABEL)
self._wc.ipv6_flabel_mask = mask
self._flow.ipv6_flabel = flabel
def set_icmpv6_type(self, icmpv6_type):
self._wc.ft_set(ofproto.OFPXMT_OFB_ICMPV6_TYPE)
self._flow.icmpv6_type = icmpv6_type
def set_icmpv6_code(self, icmpv6_code):
self._wc.ft_set(ofproto.OFPXMT_OFB_ICMPV6_CODE)
self._flow.icmpv6_code = icmpv6_code
def set_ipv6_nd_target(self, target):
self._wc.ft_set(ofproto.OFPXMT_OFB_IPV6_ND_TARGET)
self._flow.ipv6_nd_target = target
def set_ipv6_nd_sll(self, ipv6_nd_sll):
self._wc.ft_set(ofproto.OFPXMT_OFB_IPV6_ND_SLL)
self._flow.ipv6_nd_sll = ipv6_nd_sll
def set_ipv6_nd_tll(self, ipv6_nd_tll):
self._wc.ft_set(ofproto.OFPXMT_OFB_IPV6_ND_TLL)
self._flow.ipv6_nd_tll = ipv6_nd_tll
def set_mpls_label(self, mpls_label):
self._wc.ft_set(ofproto.OFPXMT_OFB_MPLS_LABEL)
self._flow.mpls_label = mpls_label
def set_mpls_tc(self, mpls_tc):
self._wc.ft_set(ofproto.OFPXMT_OFB_MPLS_TC)
self._flow.mpls_tc = mpls_tc
def set_mpls_bos(self, bos):
self._wc.ft_set(ofproto.OFPXMT_OFB_MPLS_BOS)
self._flow.mpls_bos = bos
def set_pbb_isid(self, isid):
self._wc.ft_set(ofproto.OFPXMT_OFB_PBB_ISID)
self._flow.pbb_isid = isid
def set_pbb_isid_masked(self, isid, mask):
self._wc.ft_set(ofproto.OFPXMT_OFB_PBB_ISID)
self._wc.pbb_isid_mask = mask
self._flow.pbb_isid = isid
def set_tunnel_id(self, tunnel_id):
self._wc.ft_set(ofproto.OFPXMT_OFB_TUNNEL_ID)
self._flow.tunnel_id = tunnel_id
def set_tunnel_id_masked(self, tunnel_id, mask):
self._wc.ft_set(ofproto.OFPXMT_OFB_TUNNEL_ID)
self._wc.tunnel_id_mask = mask
self._flow.tunnel_id = tunnel_id
def set_ipv6_exthdr(self, hdr):
self._wc.ft_set(ofproto.OFPXMT_OFB_IPV6_EXTHDR)
self._flow.ipv6_exthdr = hdr
def set_ipv6_exthdr_masked(self, hdr, mask):
self._wc.ft_set(ofproto.OFPXMT_OFB_IPV6_EXTHDR)
self._wc.ipv6_exthdr_mask = mask
self._flow.ipv6_exthdr = hdr
class OFPMatchField(StringifyMixin):
_FIELDS_HEADERS = {}
@staticmethod
def register_field_header(headers):
def _register_field_header(cls):
for header in headers:
OFPMatchField._FIELDS_HEADERS[header] = cls
return cls
return _register_field_header
def __init__(self, header):
self.header = header
self.n_bytes = ofproto.oxm_tlv_header_extract_length(header)
self.length = 0
@classmethod
def cls_to_header(cls, cls_, hasmask):
# XXX efficiency
inv = dict((v, k) for k, v in cls._FIELDS_HEADERS.iteritems()
if (((k >> 8) & 1) != 0) == hasmask)
return inv[cls_]
@staticmethod
def make(header, value, mask=None):
cls_ = OFPMatchField._FIELDS_HEADERS.get(header)
return cls_(header, value, mask)
@classmethod
def parser(cls, buf, offset):
(header,) = struct.unpack_from('!I', buf, offset)
cls_ = OFPMatchField._FIELDS_HEADERS.get(header)
if cls_:
field = cls_.field_parser(header, buf, offset)
else:
field = OFPMatchField(header)
field.length = (header & 0xff) + 4
return field
@classmethod
def field_parser(cls, header, buf, offset):
hasmask = (header >> 8) & 1
mask = None
if ofproto.oxm_tlv_header_extract_hasmask(header):
pack_str = '!' + cls.pack_str[1:] * 2
(value, mask) = struct.unpack_from(pack_str, buf, offset + 4)
else:
(value,) = struct.unpack_from(cls.pack_str, buf, offset + 4)
return cls(header, value, mask)
def serialize(self, buf, offset):
if ofproto.oxm_tlv_header_extract_hasmask(self.header):
self.put_w(buf, offset, self.value, self.mask)
else:
self.put(buf, offset, self.value)
def _put_header(self, buf, offset):
msg_pack_into('!I', buf, offset, self.header)
self.length = 4
def _put(self, buf, offset, value):
msg_pack_into(self.pack_str, buf, offset, value)
self.length += self.n_bytes
def put_w(self, buf, offset, value, mask):
self._put_header(buf, offset)
self._put(buf, offset + self.length, value)
self._put(buf, offset + self.length, mask)
def put(self, buf, offset, value):
self._put_header(buf, offset)
self._put(buf, offset + self.length, value)
def _putv6(self, buf, offset, value):
msg_pack_into(self.pack_str, buf, offset, *value)
self.length += self.n_bytes
def putv6(self, buf, offset, value, mask=None):
self._put_header(buf, offset)
self._putv6(buf, offset + self.length, value)
if mask and len(mask):
self._putv6(buf, offset + self.length, mask)
def oxm_len(self):
return self.header & 0xff
def to_jsondict(self):
# remove some redundant attributes
d = super(OFPMatchField, self).to_jsondict()
v = d[self.__class__.__name__]
del v['header']
del v['length']
del v['n_bytes']
return d
@classmethod
def from_jsondict(cls, dict_):
# just pass the dict around.
# it will be converted by OFPMatch.__init__().
return {cls.__name__: dict_}
def stringify_attrs(self):
f = super(OFPMatchField, self).stringify_attrs
if not ofproto.oxm_tlv_header_extract_hasmask(self.header):
# something like the following, but yield two values (k,v)
# return itertools.ifilter(lambda k, v: k != 'mask', iter())
def g():
for k, v in f():
if k != 'mask':
yield (k, v)
return g()
else:
return f()
@OFPMatchField.register_field_header([ofproto.OXM_OF_IN_PORT])
class MTInPort(OFPMatchField):
pack_str = '!I'
def __init__(self, header, value, mask=None):
super(MTInPort, self).__init__(header)
self.value = value
@OFPMatchField.register_field_header([ofproto.OXM_OF_METADATA,
ofproto.OXM_OF_METADATA_W])
class MTMetadata(OFPMatchField):
pack_str = '!Q'
def __init__(self, header, value, mask=None):
super(MTMetadata, self).__init__(header)
self.value = value
self.mask = mask
@OFPMatchField.register_field_header([ofproto.OXM_OF_IN_PHY_PORT])
class MTInPhyPort(OFPMatchField):
pack_str = '!I'
def __init__(self, header, value, mask=None):
super(MTInPhyPort, self).__init__(header)
self.value = value
@OFPMatchField.register_field_header([ofproto.OXM_OF_ETH_DST,
ofproto.OXM_OF_ETH_DST_W])
class MTEthDst(OFPMatchField):
pack_str = '!6s'
def __init__(self, header, value, mask=None):
super(MTEthDst, self).__init__(header)
self.value = value
self.mask = mask
@OFPMatchField.register_field_header([ofproto.OXM_OF_ETH_SRC,
ofproto.OXM_OF_ETH_SRC_W])
class MTEthSrc(OFPMatchField):
pack_str = '!6s'
def __init__(self, header, value, mask=None):
super(MTEthSrc, self).__init__(header)
self.value = value
self.mask = mask
@OFPMatchField.register_field_header([ofproto.OXM_OF_ETH_TYPE])
class MTEthType(OFPMatchField):
pack_str = '!H'
def __init__(self, header, value, mask=None):
super(MTEthType, self).__init__(header)
self.value = value
@OFPMatchField.register_field_header([ofproto.OXM_OF_VLAN_VID,
ofproto.OXM_OF_VLAN_VID_W])
class MTVlanVid(OFPMatchField):
pack_str = '!H'
def __init__(self, header, value, mask=None):
super(MTVlanVid, self).__init__(header)
self.value = value
self.mask = mask
@classmethod
def field_parser(cls, header, buf, offset):
m = super(MTVlanVid, cls).field_parser(header, buf, offset)
m.value &= ~ofproto.OFPVID_PRESENT
return m
@OFPMatchField.register_field_header([ofproto.OXM_OF_VLAN_PCP])
class MTVlanPcp(OFPMatchField):
pack_str = '!B'
def __init__(self, header, value, mask=None):
super(MTVlanPcp, self).__init__(header)
self.value = value
@OFPMatchField.register_field_header([ofproto.OXM_OF_IP_DSCP])
class MTIPDscp(OFPMatchField):
pack_str = '!B'
def __init__(self, header, value, mask=None):
super(MTIPDscp, self).__init__(header)
self.value = value
@OFPMatchField.register_field_header([ofproto.OXM_OF_IP_ECN])
class MTIPECN(OFPMatchField):
pack_str = '!B'
def __init__(self, header, value, mask=None):
super(MTIPECN, self).__init__(header)
self.value = value
@OFPMatchField.register_field_header([ofproto.OXM_OF_IP_PROTO])
class MTIPProto(OFPMatchField):
pack_str = '!B'
def __init__(self, header, value, mask=None):
super(MTIPProto, self).__init__(header)
self.value = value
@OFPMatchField.register_field_header([ofproto.OXM_OF_IPV4_SRC,
ofproto.OXM_OF_IPV4_SRC_W])
class MTIPV4Src(OFPMatchField):
pack_str = '!I'
def __init__(self, header, value, mask=None):
super(MTIPV4Src, self).__init__(header)
self.value = value
self.mask = mask
@OFPMatchField.register_field_header([ofproto.OXM_OF_IPV4_DST,
ofproto.OXM_OF_IPV4_DST_W])
class MTIPV4Dst(OFPMatchField):
pack_str = '!I'
def __init__(self, header, value, mask=None):
super(MTIPV4Dst, self).__init__(header)
self.value = value
self.mask = mask
@OFPMatchField.register_field_header([ofproto.OXM_OF_TCP_SRC])
class MTTCPSrc(OFPMatchField):
pack_str = '!H'
def __init__(self, header, value, mask=None):
super(MTTCPSrc, self).__init__(header)
self.value = value
@OFPMatchField.register_field_header([ofproto.OXM_OF_TCP_DST])
class MTTCPDst(OFPMatchField):
pack_str = '!H'
def __init__(self, header, value, mask=None):
super(MTTCPDst, self).__init__(header)
self.value = value
@OFPMatchField.register_field_header([ofproto.OXM_OF_UDP_SRC])
class MTUDPSrc(OFPMatchField):
pack_str = '!H'
def __init__(self, header, value, mask=None):
super(MTUDPSrc, self).__init__(header)
self.value = value
@OFPMatchField.register_field_header([ofproto.OXM_OF_UDP_DST])
class MTUDPDst(OFPMatchField):
pack_str = '!H'
def __init__(self, header, value, mask=None):
super(MTUDPDst, self).__init__(header)
self.value = value
@OFPMatchField.register_field_header([ofproto.OXM_OF_SCTP_SRC])
class MTSCTPSrc(OFPMatchField):
pack_str = '!H'
def __init__(self, header, value, mask=None):
super(MTSCTPSrc, self).__init__(header)
self.value = value
@OFPMatchField.register_field_header([ofproto.OXM_OF_SCTP_DST])
class MTSCTPDst(OFPMatchField):
pack_str = '!H'
def __init__(self, header, value, mask=None):
super(MTSCTPDst, self).__init__(header)
self.value = value
@OFPMatchField.register_field_header([ofproto.OXM_OF_ICMPV4_TYPE])
class MTICMPV4Type(OFPMatchField):
pack_str = '!B'
def __init__(self, header, value, mask=None):
super(MTICMPV4Type, self).__init__(header)
self.value = value
@OFPMatchField.register_field_header([ofproto.OXM_OF_ICMPV4_CODE])
class MTICMPV4Code(OFPMatchField):
pack_str = '!B'
def __init__(self, header, value, mask=None):
super(MTICMPV4Code, self).__init__(header)
self.value = value
@OFPMatchField.register_field_header([ofproto.OXM_OF_ARP_OP])
class MTArpOp(OFPMatchField):
pack_str = '!H'
def __init__(self, header, value, mask=None):
super(MTArpOp, self).__init__(header)
self.value = value
@OFPMatchField.register_field_header([ofproto.OXM_OF_ARP_SPA,
ofproto.OXM_OF_ARP_SPA_W])
class MTArpSpa(OFPMatchField):
pack_str = '!I'
def __init__(self, header, value, mask=None):
super(MTArpSpa, self).__init__(header)
self.value = value
self.mask = mask
@OFPMatchField.register_field_header([ofproto.OXM_OF_ARP_TPA,
ofproto.OXM_OF_ARP_TPA_W])
class MTArpTpa(OFPMatchField):
pack_str = '!I'
def __init__(self, header, value, mask=None):
super(MTArpTpa, self).__init__(header)
self.value = value
self.mask = mask
@OFPMatchField.register_field_header([ofproto.OXM_OF_ARP_SHA,
ofproto.OXM_OF_ARP_SHA_W])
class MTArpSha(OFPMatchField):
pack_str = '!6s'
def __init__(self, header, value, mask=None):
super(MTArpSha, self).__init__(header)
self.value = value
self.mask = mask
@OFPMatchField.register_field_header([ofproto.OXM_OF_ARP_THA,
ofproto.OXM_OF_ARP_THA_W])
class MTArpTha(OFPMatchField):
pack_str = '!6s'
def __init__(self, header, value, mask=None):
super(MTArpTha, self).__init__(header)
self.value = value
self.mask = mask
class MTIPv6(StringifyMixin):
@classmethod
def field_parser(cls, header, buf, offset):
if ofproto.oxm_tlv_header_extract_hasmask(header):
pack_str = '!' + cls.pack_str[1:] * 2
value = struct.unpack_from(pack_str, buf, offset + 4)
return cls(header, list(value[:8]), list(value[8:]))
else:
value = struct.unpack_from(cls.pack_str, buf, offset + 4)
return cls(header, list(value))
def serialize(self, buf, offset):
self.putv6(buf, offset, self.value, self.mask)
@OFPMatchField.register_field_header([ofproto.OXM_OF_IPV6_SRC,
ofproto.OXM_OF_IPV6_SRC_W])
class MTIPv6Src(MTIPv6, OFPMatchField):
pack_str = '!8H'
def __init__(self, header, value, mask=None):
super(MTIPv6Src, self).__init__(header)
self.value = value
self.mask = mask
@OFPMatchField.register_field_header([ofproto.OXM_OF_IPV6_DST,
ofproto.OXM_OF_IPV6_DST_W])
class MTIPv6Dst(MTIPv6, OFPMatchField):
pack_str = '!8H'
def __init__(self, header, value, mask=None):
super(MTIPv6Dst, self).__init__(header)
self.value = value
self.mask = mask
@OFPMatchField.register_field_header([ofproto.OXM_OF_IPV6_FLABEL,
ofproto.OXM_OF_IPV6_FLABEL_W])
class MTIPv6Flabel(OFPMatchField):
pack_str = '!I'
def __init__(self, header, value, mask=None):
super(MTIPv6Flabel, self).__init__(header)
self.value = value
self.mask = mask
@OFPMatchField.register_field_header([ofproto.OXM_OF_MPLS_LABEL])
class MTMplsLabel(OFPMatchField):
pack_str = '!I'
def __init__(self, header, value, mask=None):
super(MTMplsLabel, self).__init__(header)
self.value = value
@OFPMatchField.register_field_header([ofproto.OXM_OF_ICMPV6_TYPE])
class MTICMPV6Type(OFPMatchField):
pack_str = '!B'
def __init__(self, header, value, mask=None):
super(MTICMPV6Type, self).__init__(header)
self.value = value
@OFPMatchField.register_field_header([ofproto.OXM_OF_ICMPV6_CODE])
class MTICMPV6Code(OFPMatchField):
pack_str = '!B'
def __init__(self, header, value, mask=None):
super(MTICMPV6Code, self).__init__(header)
self.value = value
@OFPMatchField.register_field_header([ofproto.OXM_OF_IPV6_ND_TARGET])
class MTIPv6NdTarget(MTIPv6, OFPMatchField):
pack_str = '!8H'
def __init__(self, header, value, mask=None):
super(MTIPv6NdTarget, self).__init__(header)
self.value = value
def serialize(self, buf, offset):
self.putv6(buf, offset, self.value)
@OFPMatchField.register_field_header([ofproto.OXM_OF_IPV6_ND_SLL])
class MTIPv6NdSll(OFPMatchField):
pack_str = '!6s'
def __init__(self, header, value, mask=None):
super(MTIPv6NdSll, self).__init__(header)
self.value = value
@OFPMatchField.register_field_header([ofproto.OXM_OF_IPV6_ND_TLL])
class MTIPv6NdTll(OFPMatchField):
pack_str = '!6s'
def __init__(self, header, value, mask=None):
super(MTIPv6NdTll, self).__init__(header)
self.value = value
@OFPMatchField.register_field_header([ofproto.OXM_OF_MPLS_TC])
class MTMplsTc(OFPMatchField):
pack_str = '!B'
def __init__(self, header, value, mask=None):
super(MTMplsTc, self).__init__(header)
self.value = value
@OFPMatchField.register_field_header([ofproto.OXM_OF_MPLS_BOS])
class MTMplsBos(OFPMatchField):
pack_str = '!B'
def __init__(self, header, value, mask=None):
super(MTMplsBos, self).__init__(header)
self.value = value
@OFPMatchField.register_field_header([ofproto.OXM_OF_PBB_ISID,
ofproto.OXM_OF_PBB_ISID_W])
class MTPbbIsid(OFPMatchField):
pack_str = '!3B'
def __init__(self, header, value, mask=None):
super(MTPbbIsid, self).__init__(header)
self.value = value
self.mask = mask
@classmethod
def field_parser(cls, header, buf, offset):
hasmask = (header >> 8) & 1
mask = None
if ofproto.oxm_tlv_header_extract_hasmask(header):
pack_str = '!' + cls.pack_str[1:] * 2
(v1, v2, v3, m1, m2, m3) = struct.unpack_from(pack_str, buf,
offset + 4)
value = v1 << 16 | v2 << 8 | v3
mask = m1 << 16 | m2 << 8 | m3
else:
(v1, v2, v3,) = struct.unpack_from(cls.pack_str, buf, offset + 4)
value = v1 << 16 | v2 << 8 | v3
return cls(header, value, mask)
def _put(self, buf, offset, value):
msg_pack_into(self.pack_str, buf, offset,
(value >> 16) & 0xff,
(value >> 8) & 0xff,
(value >> 0) & 0xff)
self.length += self.n_bytes
@OFPMatchField.register_field_header([ofproto.OXM_OF_TUNNEL_ID,
ofproto.OXM_OF_TUNNEL_ID_W])
class MTTunnelId(OFPMatchField):
pack_str = '!Q'
def __init__(self, header, value, mask=None):
super(MTTunnelId, self).__init__(header)
self.value = value
self.mask = mask
@OFPMatchField.register_field_header([ofproto.OXM_OF_IPV6_EXTHDR,
ofproto.OXM_OF_IPV6_EXTHDR_W])
class MTIPv6ExtHdr(OFPMatchField):
pack_str = '!H'
def __init__(self, header, value, mask=None):
super(MTIPv6ExtHdr, self).__init__(header)
self.value = value
self.mask = mask
@_register_parser
@_set_msg_type(ofproto.OFPT_PACKET_IN)
class OFPPacketIn(MsgBase):
"""
Packet-In message
The switch sends the packet that received to the controller by this
message.
============= =========================================================
Attribute Description
============= =========================================================
buffer_id ID assigned by datapath
total_len Full length of frame
reason Reason packet is being sent.
| OFPR_NO_MATCH
| OFPR_ACTION
| OFPR_INVALID_TTL
table_id ID of the table that was looked up
cookie Cookie of the flow entry that was looked up
match Instance of ``OFPMatch``
data Ethernet frame
============= =========================================================
Example::
@set_ev_cls(ofp_event.EventOFPPacketIn, MAIN_DISPATCHER)
def packet_in_handler(self, ev):
msg = ev.msg
ofp = dp.ofproto
if msg.reason == ofp.OFPR_NO_MATCH:
reason = 'NO MATCH'
elif msg.reason == ofp.OFPR_ACTION:
reason = 'ACTION'
elif msg.reason == ofp.OFPR_INVALID_TTL:
reason = 'INVALID TTL'
else:
reason = 'unknown'
self.logger.debug('OFPPacketIn received: '
'buffer_id=%x total_len=%d reason=%s '
'table_id=%d cookie=%d match=%s data=%s',
msg.buffer_id, msg.total_len, reason,
msg.table_id, msg.cookie, msg.match,
utils.hex_array(msg.data))
"""
def __init__(self, datapath, buffer_id=None, total_len=None, reason=None,
table_id=None, cookie=None, match=None, data=None):
super(OFPPacketIn, self).__init__(datapath)
self.buffer_id = buffer_id
self.total_len = total_len
self.reason = reason
self.table_id = table_id
self.cookie = cookie
self.match = match
self.data = data
@classmethod
def parser(cls, datapath, version, msg_type, msg_len, xid, buf):
msg = super(OFPPacketIn, cls).parser(datapath, version, msg_type,
msg_len, xid, buf)
(msg.buffer_id, msg.total_len, msg.reason,
msg.table_id, msg.cookie) = struct.unpack_from(
ofproto.OFP_PACKET_IN_PACK_STR,
msg.buf, ofproto.OFP_HEADER_SIZE)
msg.match = OFPMatch.parser(msg.buf, ofproto.OFP_PACKET_IN_SIZE -
ofproto.OFP_MATCH_SIZE)
match_len = utils.round_up(msg.match.length, 8)
msg.data = msg.buf[(ofproto.OFP_PACKET_IN_SIZE -
ofproto.OFP_MATCH_SIZE + match_len + 2):]
if msg.total_len < len(msg.data):
# discard padding for 8-byte alignment of OFP packet
msg.data = msg.data[:msg.total_len]
return msg
@_register_parser
@_set_msg_type(ofproto.OFPT_FLOW_REMOVED)
class OFPFlowRemoved(MsgBase):
"""
Flow removed message
When flow entries time out or are deleted, the switch notifies controller
with this message.
================ ======================================================
Attribute Description
================ ======================================================
cookie Opaque controller-issued identifier
priority Priority level of flow entry
reason One of the following values.
| OFPRR_IDLE_TIMEOUT
| OFPRR_HARD_TIMEOUT
| OFPRR_DELETE
| OFPRR_GROUP_DELETE
table_id ID of the table
duration_sec Time flow was alive in seconds
duration_nsec Time flow was alive in nanoseconds beyond duration_sec
idle_timeout Idle timeout from original flow mod
hard_timeout Hard timeout from original flow mod
packet_count Number of packets that was associated with the flow
byte_count Number of bytes that was associated with the flow
match Instance of ``OFPMatch``
================ ======================================================
Example::
@set_ev_cls(ofp_event.EventOFPFlowRemoved, MAIN_DISPATCHER)
def flow_removed_handler(self, ev):
msg = ev.msg
dp = msg.datapath
ofp = dp.ofproto
if msg.reason == ofp.OFPRR_IDLE_TIMEOUT:
reason = 'IDLE TIMEOUT'
elif msg.reason == ofp.OFPRR_HARD_TIMEOUT:
reason = 'HARD TIMEOUT'
elif msg.reason == ofp.OFPRR_DELETE:
reason = 'DELETE'
elif msg.reason == ofp.OFPRR_GROUP_DELETE:
reason = 'GROUP DELETE'
else:
reason = 'unknown'
self.logger.debug('OFPFlowRemoved received: '
'cookie=%d priority=%d reason=%s table_id=%d '
'duration_sec=%d duration_nsec=%d '
'idle_timeout=%d hard_timeout=%d '
'packet_count=%d byte_count=%d match.fields=%s',
msg.cookie, msg.priority, reason, msg.table_id,
msg.duration_sec, msg.duration_nsec,
msg.idle_timeout, msg.hard_timeout,
msg.packet_count, msg.byte_count, msg.match)
"""
def __init__(self, datapath, cookie=None, priority=None, reason=None,
table_id=None, duration_sec=None, duration_nsec=None,
idle_timeout=None, hard_timeout=None, packet_count=None,
byte_count=None, match=None):
super(OFPFlowRemoved, self).__init__(datapath)
self.cookie = cookie
self.priority = priority
self.reason = reason
self.table_id = table_id
self.duration_sec = duration_sec
self.duration_nsec = duration_nsec
self.idle_timeout = idle_timeout
self.hard_timeout = hard_timeout
self.packet_count = packet_count
self.byte_count = byte_count
self.match = match
@classmethod
def parser(cls, datapath, version, msg_type, msg_len, xid, buf):
msg = super(OFPFlowRemoved, cls).parser(datapath, version, msg_type,
msg_len, xid, buf)
(msg.cookie, msg.priority, msg.reason,
msg.table_id, msg.duration_sec, msg.duration_nsec,
msg.idle_timeout, msg.hard_timeout, msg.packet_count,
msg.byte_count) = struct.unpack_from(
ofproto.OFP_FLOW_REMOVED_PACK_STR0,
msg.buf, ofproto.OFP_HEADER_SIZE)
offset = (ofproto.OFP_FLOW_REMOVED_SIZE -
ofproto.OFP_MATCH_SIZE)
msg.match = OFPMatch.parser(msg.buf, offset)
return msg
class OFPPort(ofproto_parser.namedtuple('OFPPort', (
'port_no', 'hw_addr', 'name', 'config', 'state', 'curr',
'advertised', 'supported', 'peer', 'curr_speed', 'max_speed'))):
_TYPE = {
'ascii': [
'hw_addr',
],
'utf-8': [
# OF spec is unclear about the encoding of name.
# we assumes UTF-8, which is used by OVS.
'name',
]
}
@classmethod
def parser(cls, buf, offset):
port = struct.unpack_from(ofproto.OFP_PORT_PACK_STR, buf, offset)
port = list(port)
i = cls._fields.index('hw_addr')
port[i] = addrconv.mac.bin_to_text(port[i])
i = cls._fields.index('name')
port[i] = port[i].rstrip('\0')
ofpport = cls(*port)
ofpport.length = ofproto.OFP_PORT_SIZE
return ofpport
@_register_parser
@_set_msg_type(ofproto.OFPT_PORT_STATUS)
class OFPPortStatus(MsgBase):
"""
Port status message
The switch notifies controller of change of ports.
================ ======================================================
Attribute Description
================ ======================================================
reason One of the following values.
| OFPPR_ADD
| OFPPR_DELETE
| OFPPR_MODIFY
desc instance of ``OFPPort``
================ ======================================================
Example::
@set_ev_cls(ofp_event.EventOFPPortStatus, MAIN_DISPATCHER)
def port_status_handler(self, ev):
msg = ev.msg
dp = msg.datapath
ofp = dp.ofproto
if msg.reason == ofp.OFPPR_ADD:
reason = 'ADD'
elif msg.reason == ofp.OFPPR_DELETE:
reason = 'DELETE'
elif msg.reason == ofp.OFPPR_MODIFY:
reason = 'MODIFY'
else:
reason = 'unknown'
self.logger.debug('OFPPortStatus received: reason=%s desc=%s',
reason, msg.desc)
"""
def __init__(self, datapath, reason=None, desc=None):
super(OFPPortStatus, self).__init__(datapath)
self.reason = reason
self.desc = desc
@classmethod
def parser(cls, datapath, version, msg_type, msg_len, xid, buf):
msg = super(OFPPortStatus, cls).parser(datapath, version, msg_type,
msg_len, xid, buf)
msg.reason = struct.unpack_from(
ofproto.OFP_PORT_STATUS_PACK_STR, msg.buf,
ofproto.OFP_HEADER_SIZE)[0]
msg.desc = OFPPort.parser(msg.buf,
ofproto.OFP_PORT_STATUS_DESC_OFFSET)
return msg
@_set_msg_type(ofproto.OFPT_PACKET_OUT)
class OFPPacketOut(MsgBase):
"""
Packet-Out message
The controller uses this message to send a packet out throught the
switch.
================ ======================================================
Attribute Description
================ ======================================================
buffer_id ID assigned by datapath (OFP_NO_BUFFER if none)
in_port Packet's input port or ``OFPP_CONTROLLER``
actions list of OpenFlow action class
data Packet data
================ ======================================================
Example::
def send_packet_out(self, datapath, buffer_id, in_port):
ofp = datapath.ofproto
ofp_parser = datapath.ofproto_parser
actions = [ofp_parser.OFPActionOutput(ofp.OFPP_FLOOD, 0)]
req = ofp_parser.OFPPacketOut(datapath, buffer_id,
in_port, actions)
datapath.send_msg(req)
"""
def __init__(self, datapath, buffer_id=None, in_port=None, actions=None,
data=None, actions_len=None):
assert in_port is not None
super(OFPPacketOut, self).__init__(datapath)
self.buffer_id = buffer_id
self.in_port = in_port
self.actions_len = 0
self.actions = actions
self.data = data
def _serialize_body(self):
self.actions_len = 0
offset = ofproto.OFP_PACKET_OUT_SIZE
for a in self.actions:
a.serialize(self.buf, offset)
offset += a.len
self.actions_len += a.len
if self.data is not None:
assert self.buffer_id == 0xffffffff
self.buf += self.data
msg_pack_into(ofproto.OFP_PACKET_OUT_PACK_STR,
self.buf, ofproto.OFP_HEADER_SIZE,
self.buffer_id, self.in_port, self.actions_len)
@_set_msg_type(ofproto.OFPT_FLOW_MOD)
class OFPFlowMod(MsgBase):
"""
Modify Flow entry message
The controller sends this message to modify the flow table.
================ ======================================================
Attribute Description
================ ======================================================
cookie Opaque controller-issued identifier
cookie_mask Mask used to restrict the cookie bits that must match
when the command is ``OPFFC_MODIFY*`` or
``OFPFC_DELETE*``
table_id ID of the table to put the flow in
command One of the following values.
| OFPFC_ADD
| OFPFC_MODIFY
| OFPFC_MODIFY_STRICT
| OFPFC_DELETE
| OFPFC_DELETE_STRICT
idle_timeout Idle time before discarding (seconds)
hard_timeout Max time before discarding (seconds)
priority Priority level of flow entry
buffer_id Buffered packet to apply to (or OFP_NO_BUFFER)
out_port For ``OFPFC_DELETE*`` commands, require matching
entries to include this as an output port
out_group For ``OFPFC_DELETE*`` commands, require matching
entries to include this as an output group
flags Bitmap of the following flags.
| OFPFF_SEND_FLOW_REM
| OFPFF_CHECK_OVERLAP
| OFPFF_RESET_COUNTS
| OFPFF_NO_PKT_COUNTS
| OFPFF_NO_BYT_COUNTS
match Instance of ``OFPMatch``
instructions list of ``OFPInstruction*`` instance
================ ======================================================
Example::
def send_flow_mod(self, datapath):
ofp = datapath.ofproto
ofp_parser = datapath.ofproto_parser
cookie = cookie_mask = 0
table_id = 0
idle_timeout = hard_timeout = 0
priority = 32768
buffer_id = ofp.OFP_NO_BUFFER
match = ofp_parser.OFPMatch(in_port=1, eth_dst='ff:ff:ff:ff:ff:ff')
actions = [ofp_parser.OFPActionOutput(ofp.OFPP_NORMAL, 0)]
inst = [ofp_parser.OFPInstructionActions(ofp.OFPIT_APPLY_ACTIONS,
actions)]
req = ofp_parser.OFPFlowMod(datapath, cookie, cookie_mask,
table_id, ofp.OFPFC_ADD,
idle_timeout, hard_timeout,
priority, buffer_id,
ofp.OFPP_ANY, ofp.OFPG_ANY,
ofp.OFPFF_SEND_FLOW_REM,
match, inst)
datapath.send_msg(req)
"""
def __init__(self, datapath, cookie=0, cookie_mask=0, table_id=0,
command=ofproto.OFPFC_ADD,
idle_timeout=0, hard_timeout=0,
priority=ofproto.OFP_DEFAULT_PRIORITY,
buffer_id=ofproto.OFP_NO_BUFFER,
out_port=0, out_group=0, flags=0,
match=None,
instructions=[]):
super(OFPFlowMod, self).__init__(datapath)
self.cookie = cookie
self.cookie_mask = cookie_mask
self.table_id = table_id
self.command = command
self.idle_timeout = idle_timeout
self.hard_timeout = hard_timeout
self.priority = priority
self.buffer_id = buffer_id
self.out_port = out_port
self.out_group = out_group
self.flags = flags
if match is None:
match = OFPMatch()
assert isinstance(match, OFPMatch)
self.match = match
for i in instructions:
assert isinstance(i, OFPInstruction)
self.instructions = instructions
def _serialize_body(self):
msg_pack_into(ofproto.OFP_FLOW_MOD_PACK_STR0, self.buf,
ofproto.OFP_HEADER_SIZE,
self.cookie, self.cookie_mask, self.table_id,
self.command, self.idle_timeout, self.hard_timeout,
self.priority, self.buffer_id, self.out_port,
self.out_group, self.flags)
offset = (ofproto.OFP_FLOW_MOD_SIZE -
ofproto.OFP_MATCH_SIZE)
match_len = self.match.serialize(self.buf, offset)
offset += match_len
for inst in self.instructions:
inst.serialize(self.buf, offset)
offset += inst.len
class OFPInstruction(StringifyMixin):
_INSTRUCTION_TYPES = {}
@staticmethod
def register_instruction_type(types):
def _register_instruction_type(cls):
for type_ in types:
OFPInstruction._INSTRUCTION_TYPES[type_] = cls
return cls
return _register_instruction_type
@classmethod
def parser(cls, buf, offset):
(type_, len_) = struct.unpack_from('!HH', buf, offset)
cls_ = cls._INSTRUCTION_TYPES.get(type_)
return cls_.parser(buf, offset)
@OFPInstruction.register_instruction_type([ofproto.OFPIT_GOTO_TABLE])
class OFPInstructionGotoTable(OFPInstruction):
"""
Goto table instruction
This instruction indicates the next table in the processing pipeline.
================ ======================================================
Attribute Description
================ ======================================================
table_id Next table
================ ======================================================
"""
def __init__(self, table_id, type_=None, len_=None):
super(OFPInstructionGotoTable, self).__init__()
self.type = ofproto.OFPIT_GOTO_TABLE
self.len = ofproto.OFP_INSTRUCTION_GOTO_TABLE_SIZE
self.table_id = table_id
@classmethod
def parser(cls, buf, offset):
(type_, len_, table_id) = struct.unpack_from(
ofproto.OFP_INSTRUCTION_GOTO_TABLE_PACK_STR,
buf, offset)
return cls(table_id)
def serialize(self, buf, offset):
msg_pack_into(ofproto.OFP_INSTRUCTION_GOTO_TABLE_PACK_STR,
buf, offset, self.type, self.len, self.table_id)
@OFPInstruction.register_instruction_type([ofproto.OFPIT_WRITE_METADATA])
class OFPInstructionWriteMetadata(OFPInstruction):
"""
Write metadata instruction
This instruction writes the masked metadata value into the metadata field.
================ ======================================================
Attribute Description
================ ======================================================
metadata Metadata value to write
metadata_mask Metadata write bitmask
================ ======================================================
"""
def __init__(self, metadata, metadata_mask, type_=None, len_=None):
super(OFPInstructionWriteMetadata, self).__init__()
self.type = ofproto.OFPIT_WRITE_METADATA
self.len = ofproto.OFP_INSTRUCTION_WRITE_METADATA_SIZE
self.metadata = metadata
self.metadata_mask = metadata_mask
@classmethod
def parser(cls, buf, offset):
(type_, len_, metadata, metadata_mask) = struct.unpack_from(
ofproto.OFP_INSTRUCTION_WRITE_METADATA_PACK_STR,
buf, offset)
return cls(metadata, metadata_mask)
def serialize(self, buf, offset):
msg_pack_into(ofproto.OFP_INSTRUCTION_WRITE_METADATA_PACK_STR,
buf, offset, self.type, self.len, self.metadata,
self.metadata_mask)
@OFPInstruction.register_instruction_type([ofproto.OFPIT_WRITE_ACTIONS,
ofproto.OFPIT_APPLY_ACTIONS,
ofproto.OFPIT_CLEAR_ACTIONS])
class OFPInstructionActions(OFPInstruction):
"""
Actions instruction
This instruction writes/applies/clears the actions.
================ ======================================================
Attribute Description
================ ======================================================
type One of following values.
| OFPIT_WRITE_ACTIONS
| OFPIT_APPLY_ACTIONS
| OFPIT_CLEAR_ACTIONS
actions list of OpenFlow action class
================ ======================================================
``type`` attribute corresponds to ``type_`` parameter of __init__.
"""
def __init__(self, type_, actions=None, len_=None):
super(OFPInstructionActions, self).__init__()
self.type = type_
for a in actions:
assert isinstance(a, OFPAction)
self.actions = actions
@classmethod
def parser(cls, buf, offset):
(type_, len_) = struct.unpack_from(
ofproto.OFP_INSTRUCTION_ACTIONS_PACK_STR,
buf, offset)
offset += ofproto.OFP_INSTRUCTION_ACTIONS_SIZE
actions = []
actions_len = len_ - ofproto.OFP_INSTRUCTION_ACTIONS_SIZE
while actions_len > 0:
a = OFPAction.parser(buf, offset)
actions.append(a)
actions_len -= a.len
offset += a.len
inst = cls(type_, actions)
inst.len = len_
return inst
def serialize(self, buf, offset):
action_offset = offset + ofproto.OFP_INSTRUCTION_ACTIONS_SIZE
if self.actions:
for a in self.actions:
a.serialize(buf, action_offset)
action_offset += a.len
self.len = action_offset - offset
pad_len = utils.round_up(self.len, 8) - self.len
msg_pack_into("%dx" % pad_len, buf, action_offset)
self.len += pad_len
msg_pack_into(ofproto.OFP_INSTRUCTION_ACTIONS_PACK_STR,
buf, offset, self.type, self.len)
@OFPInstruction.register_instruction_type([ofproto.OFPIT_METER])
class OFPInstructionMeter(OFPInstruction):
"""
Meter instruction
This instruction applies the meter.
================ ======================================================
Attribute Description
================ ======================================================
meter_id Meter instance
================ ======================================================
"""
def __init__(self, meter_id=1, type_=None, len_=None):
super(OFPInstructionMeter, self).__init__()
self.type = ofproto.OFPIT_METER
self.len = ofproto.OFP_INSTRUCTION_METER_SIZE
self.meter_id = meter_id
@classmethod
def parser(cls, buf, offset):
(type_, len_, meter_id) = struct.unpack_from(
ofproto.OFP_INSTRUCTION_METER_PACK_STR,
buf, offset)
return cls(meter_id)
def serialize(self, buf, offset):
msg_pack_into(ofproto.OFP_INSTRUCTION_METER_PACK_STR,
buf, offset, self.type, self.len, self.meter_id)
class OFPActionHeader(StringifyMixin):
def __init__(self, type_, len_):
self.type = type_
self.len = len_
def serialize(self, buf, offset):
msg_pack_into(ofproto.OFP_ACTION_HEADER_PACK_STR,
buf, offset, self.type, self.len)
class OFPAction(OFPActionHeader):
_ACTION_TYPES = {}
@staticmethod
def register_action_type(type_, len_):
def _register_action_type(cls):
cls.cls_action_type = type_
cls.cls_action_len = len_
OFPAction._ACTION_TYPES[cls.cls_action_type] = cls
return cls
return _register_action_type
def __init__(self):
cls = self.__class__
super(OFPAction, self).__init__(cls.cls_action_type,
cls.cls_action_len)
@classmethod
def parser(cls, buf, offset):
type_, len_ = struct.unpack_from(
ofproto.OFP_ACTION_HEADER_PACK_STR, buf, offset)
cls_ = cls._ACTION_TYPES.get(type_)
assert cls_ is not None
return cls_.parser(buf, offset)
@OFPAction.register_action_type(ofproto.OFPAT_OUTPUT,
ofproto.OFP_ACTION_OUTPUT_SIZE)
class OFPActionOutput(OFPAction):
"""
Output action
This action indicates output a packet to the switch port.
================ ======================================================
Attribute Description
================ ======================================================
port Output port
max_len Max length to send to controller
================ ======================================================
"""
def __init__(self, port, max_len=ofproto.OFPCML_MAX,
type_=None, len_=None):
super(OFPActionOutput, self).__init__()
self.port = port
self.max_len = max_len
@classmethod
def parser(cls, buf, offset):
type_, len_, port, max_len = struct.unpack_from(
ofproto.OFP_ACTION_OUTPUT_PACK_STR, buf, offset)
return cls(port, max_len)
def serialize(self, buf, offset):
msg_pack_into(ofproto.OFP_ACTION_OUTPUT_PACK_STR, buf,
offset, self.type, self.len, self.port, self.max_len)
@OFPAction.register_action_type(ofproto.OFPAT_GROUP,
ofproto.OFP_ACTION_GROUP_SIZE)
class OFPActionGroup(OFPAction):
"""
Group action
This action indicates the group used to process the packet.
================ ======================================================
Attribute Description
================ ======================================================
group_id Group identifier
================ ======================================================
"""
def __init__(self, group_id=0, type_=None, len_=None):
super(OFPActionGroup, self).__init__()
self.group_id = group_id
@classmethod
def parser(cls, buf, offset):
(type_, len_, group_id) = struct.unpack_from(
ofproto.OFP_ACTION_GROUP_PACK_STR, buf, offset)
return cls(group_id)
def serialize(self, buf, offset):
msg_pack_into(ofproto.OFP_ACTION_GROUP_PACK_STR, buf,
offset, self.type, self.len, self.group_id)
@OFPAction.register_action_type(ofproto.OFPAT_SET_QUEUE,
ofproto.OFP_ACTION_SET_QUEUE_SIZE)
class OFPActionSetQueue(OFPAction):
"""
Set queue action
This action sets the queue id that will be used to map a flow to an
already-configured queue on a port.
================ ======================================================
Attribute Description
================ ======================================================
queue_id Queue ID for the packets
================ ======================================================
"""
def __init__(self, queue_id, type_=None, len_=None):
super(OFPActionSetQueue, self).__init__()
self.queue_id = queue_id
@classmethod
def parser(cls, buf, offset):
(type_, len_, queue_id) = struct.unpack_from(
ofproto.OFP_ACTION_SET_QUEUE_PACK_STR, buf, offset)
return cls(queue_id)
def serialize(self, buf, offset):
msg_pack_into(ofproto.OFP_ACTION_SET_QUEUE_PACK_STR, buf,
offset, self.type, self.len, self.queue_id)
@OFPAction.register_action_type(ofproto.OFPAT_SET_MPLS_TTL,
ofproto.OFP_ACTION_MPLS_TTL_SIZE)
class OFPActionSetMplsTtl(OFPAction):
"""
Set MPLS TTL action
This action sets the MPLS TTL.
================ ======================================================
Attribute Description
================ ======================================================
mpls_ttl MPLS TTL
================ ======================================================
"""
def __init__(self, mpls_ttl, type_=None, len_=None):
super(OFPActionSetMplsTtl, self).__init__()
self.mpls_ttl = mpls_ttl
@classmethod
def parser(cls, buf, offset):
(type_, len_, mpls_ttl) = struct.unpack_from(
ofproto.OFP_ACTION_MPLS_TTL_PACK_STR, buf, offset)
return cls(mpls_ttl)
def serialize(self, buf, offset):
msg_pack_into(ofproto.OFP_ACTION_MPLS_TTL_PACK_STR, buf,
offset, self.type, self.len, self.mpls_ttl)
@OFPAction.register_action_type(ofproto.OFPAT_DEC_MPLS_TTL,
ofproto.OFP_ACTION_HEADER_SIZE)
class OFPActionDecMplsTtl(OFPAction):
"""
Decrement MPLS TTL action
This action decrements the MPLS TTL.
"""
def __init__(self, type_=None, len_=None):
super(OFPActionDecMplsTtl, self).__init__()
@classmethod
def parser(cls, buf, offset):
(type_, len_) = struct.unpack_from(
ofproto.OFP_ACTION_HEADER_PACK_STR, buf, offset)
return cls()
@OFPAction.register_action_type(ofproto.OFPAT_SET_NW_TTL,
ofproto.OFP_ACTION_NW_TTL_SIZE)
class OFPActionSetNwTtl(OFPAction):
"""
Set IP TTL action
This action sets the IP TTL.
================ ======================================================
Attribute Description
================ ======================================================
nw_ttl IP TTL
================ ======================================================
"""
def __init__(self, nw_ttl, type_=None, len_=None):
super(OFPActionSetNwTtl, self).__init__()
self.nw_ttl = nw_ttl
@classmethod
def parser(cls, buf, offset):
(type_, len_, nw_ttl) = struct.unpack_from(
ofproto.OFP_ACTION_NW_TTL_PACK_STR, buf, offset)
return cls(nw_ttl)
def serialize(self, buf, offset):
msg_pack_into(ofproto.OFP_ACTION_NW_TTL_PACK_STR, buf, offset,
self.type, self.len, self.nw_ttl)
@OFPAction.register_action_type(ofproto.OFPAT_DEC_NW_TTL,
ofproto.OFP_ACTION_HEADER_SIZE)
class OFPActionDecNwTtl(OFPAction):
"""
Decrement IP TTL action
This action decrements the IP TTL.
"""
def __init__(self, type_=None, len_=None):
super(OFPActionDecNwTtl, self).__init__()
@classmethod
def parser(cls, buf, offset):
(type_, len_) = struct.unpack_from(
ofproto.OFP_ACTION_HEADER_PACK_STR, buf, offset)
return cls()
@OFPAction.register_action_type(ofproto.OFPAT_COPY_TTL_OUT,
ofproto.OFP_ACTION_HEADER_SIZE)
class OFPActionCopyTtlOut(OFPAction):
"""
Copy TTL Out action
This action copies the TTL from the next-to-outermost header with TTL to
the outermost header with TTL.
"""
def __init__(self, type_=None, len_=None):
super(OFPActionCopyTtlOut, self).__init__()
@classmethod
def parser(cls, buf, offset):
(type_, len_) = struct.unpack_from(
ofproto.OFP_ACTION_HEADER_PACK_STR, buf, offset)
return cls()
@OFPAction.register_action_type(ofproto.OFPAT_COPY_TTL_IN,
ofproto.OFP_ACTION_HEADER_SIZE)
class OFPActionCopyTtlIn(OFPAction):
"""
Copy TTL In action
This action copies the TTL from the outermost header with TTL to the
next-to-outermost header with TTL.
"""
def __init__(self, type_=None, len_=None):
super(OFPActionCopyTtlIn, self).__init__()
@classmethod
def parser(cls, buf, offset):
(type_, len_) = struct.unpack_from(
ofproto.OFP_ACTION_HEADER_PACK_STR, buf, offset)
return cls()
@OFPAction.register_action_type(ofproto.OFPAT_PUSH_VLAN,
ofproto.OFP_ACTION_PUSH_SIZE)
class OFPActionPushVlan(OFPAction):
"""
Push VLAN action
This action pushes a new VLAN tag to the packet.
================ ======================================================
Attribute Description
================ ======================================================
ethertype Ether type. The default is 802.1Q. (0x8100)
================ ======================================================
"""
def __init__(self, ethertype=ether.ETH_TYPE_8021Q, type_=None, len_=None):
super(OFPActionPushVlan, self).__init__()
self.ethertype = ethertype
@classmethod
def parser(cls, buf, offset):
(type_, len_, ethertype) = struct.unpack_from(
ofproto.OFP_ACTION_PUSH_PACK_STR, buf, offset)
return cls(ethertype)
def serialize(self, buf, offset):
msg_pack_into(ofproto.OFP_ACTION_PUSH_PACK_STR, buf, offset,
self.type, self.len, self.ethertype)
@OFPAction.register_action_type(ofproto.OFPAT_PUSH_MPLS,
ofproto.OFP_ACTION_PUSH_SIZE)
class OFPActionPushMpls(OFPAction):
"""
Push MPLS action
This action pushes a new MPLS header to the packet.
================ ======================================================
Attribute Description
================ ======================================================
ethertype Ether type
================ ======================================================
"""
def __init__(self, ethertype=ether.ETH_TYPE_MPLS, type_=None, len_=None):
super(OFPActionPushMpls, self).__init__()
self.ethertype = ethertype
@classmethod
def parser(cls, buf, offset):
(type_, len_, ethertype) = struct.unpack_from(
ofproto.OFP_ACTION_PUSH_PACK_STR, buf, offset)
return cls(ethertype)
def serialize(self, buf, offset):
msg_pack_into(ofproto.OFP_ACTION_PUSH_PACK_STR, buf, offset,
self.type, self.len, self.ethertype)
@OFPAction.register_action_type(ofproto.OFPAT_POP_VLAN,
ofproto.OFP_ACTION_HEADER_SIZE)
class OFPActionPopVlan(OFPAction):
"""
Pop VLAN action
This action pops the outermost VLAN tag from the packet.
"""
def __init__(self, type_=None, len_=None):
super(OFPActionPopVlan, self).__init__()
@classmethod
def parser(cls, buf, offset):
(type_, len_) = struct.unpack_from(
ofproto.OFP_ACTION_HEADER_PACK_STR, buf, offset)
return cls()
@OFPAction.register_action_type(ofproto.OFPAT_POP_MPLS,
ofproto.OFP_ACTION_POP_MPLS_SIZE)
class OFPActionPopMpls(OFPAction):
"""
Pop MPLS action
This action pops the MPLS header from the packet.
"""
def __init__(self, ethertype=ether.ETH_TYPE_IP, type_=None, len_=None):
super(OFPActionPopMpls, self).__init__()
self.ethertype = ethertype
@classmethod
def parser(cls, buf, offset):
(type_, len_, ethertype) = struct.unpack_from(
ofproto.OFP_ACTION_POP_MPLS_PACK_STR, buf, offset)
return cls(ethertype)
def serialize(self, buf, offset):
msg_pack_into(ofproto.OFP_ACTION_POP_MPLS_PACK_STR, buf, offset,
self.type, self.len, self.ethertype)
@OFPAction.register_action_type(ofproto.OFPAT_SET_FIELD,
ofproto.OFP_ACTION_SET_FIELD_SIZE)
class OFPActionSetField(OFPAction):
"""
Set field action
This action modifies a header field in the packet.
The set of keywords available for this is same as OFPMatch.
Example::
set_field = OFPActionSetField(eth_src="00:00:00:00:00")
"""
def __init__(self, field=None, **kwargs):
# old api
# OFPActionSetField(field)
# new api
# OFPActionSetField(eth_src="00:00:00:00:00")
super(OFPActionSetField, self).__init__()
if isinstance(field, OFPMatchField):
# old api compat
assert len(kwargs) == 0
self.field = field
else:
# new api
assert len(kwargs) == 1
key = kwargs.keys()[0]
value = kwargs[key]
assert isinstance(key, (str, unicode))
assert not isinstance(value, tuple) # no mask
self.key = key
self.value = value
@classmethod
def parser(cls, buf, offset):
(type_, len_) = struct.unpack_from(
ofproto.OFP_ACTION_SET_FIELD_PACK_STR, buf, offset)
(n, value, mask, _len) = ofproto.oxm_parse(buf, offset + 4)
k, uv = ofproto.oxm_to_user(n, value, mask)
action = cls(**{k: uv})
action.len = len_
# old api compat
action.field = OFPMatchField.parser(buf, offset + 4)
return action
def serialize(self, buf, offset):
# old api compat
if self._composed_with_old_api():
return self.serialize_old(buf, offset)
n, value, mask = ofproto.oxm_from_user(self.key, self.value)
len_ = ofproto.oxm_serialize(n, value, mask, buf, offset + 4)
self.len = utils.round_up(4 + len_, 8)
msg_pack_into('!HH', buf, offset, self.type, self.len)
pad_len = self.len - (4 + len_)
msg_pack_into("%dx" % pad_len, buf, offset + 4 + len_)
# XXX old api compat
def serialize_old(self, buf, offset):
len_ = ofproto.OFP_ACTION_SET_FIELD_SIZE + self.field.oxm_len()
self.len = utils.round_up(len_, 8)
pad_len = self.len - len_
msg_pack_into('!HH', buf, offset, self.type, self.len)
self.field.serialize(buf, offset + 4)
offset += len_
msg_pack_into("%dx" % pad_len, buf, offset)
# XXX old api compat
def _composed_with_old_api(self):
return not hasattr(self, 'value')
def to_jsondict(self):
# XXX old api compat
if self._composed_with_old_api():
# copy object first because serialize_old is destructive
o2 = OFPActionSetField(self.field)
# serialize and parse to fill new fields
buf = bytearray()
o2.serialize(buf, 0)
o = OFPActionSetField.parser(str(buf), 0)
else:
o = self
return {
self.__class__.__name__: {
'field': ofproto.oxm_to_jsondict(self.key, self.value)
}
}
@classmethod
def from_jsondict(cls, dict_):
k, v = ofproto.oxm_from_jsondict(dict_['field'])
o = OFPActionSetField(**{k: v})
# XXX old api compat
# serialize and parse to fill old attributes
buf = bytearray()
o.serialize(buf, 0)
return OFPActionSetField.parser(str(buf), 0)
# XXX old api compat
def __str__(self):
# XXX old api compat
if self._composed_with_old_api():
# copy object first because serialize_old is destructive
o2 = OFPActionSetField(self.field)
# serialize and parse to fill new fields
buf = bytearray()
o2.serialize(buf, 0)
o = OFPActionSetField.parser(str(buf), 0)
else:
o = self
return super(OFPActionSetField, o).__str__()
__repr__ = __str__
def stringify_attrs(self):
yield (self.key, self.value)
@OFPAction.register_action_type(ofproto.OFPAT_PUSH_PBB,
ofproto.OFP_ACTION_PUSH_SIZE)
class OFPActionPushPbb(OFPAction):
"""
Push PBB action
This action pushes a new PBB header to the packet.
================ ======================================================
Attribute Description
================ ======================================================
ethertype Ether type
================ ======================================================
"""
def __init__(self, ethertype, type_=None, len_=None):
super(OFPActionPushPbb, self).__init__()
self.ethertype = ethertype
@classmethod
def parser(cls, buf, offset):
(type_, len_, ethertype) = struct.unpack_from(
ofproto.OFP_ACTION_PUSH_PACK_STR, buf, offset)
return cls(ethertype)
def serialize(self, buf, offset):
msg_pack_into(ofproto.OFP_ACTION_PUSH_PACK_STR, buf, offset,
self.type, self.len, self.ethertype)
@OFPAction.register_action_type(ofproto.OFPAT_POP_PBB,
ofproto.OFP_ACTION_HEADER_SIZE)
class OFPActionPopPbb(OFPAction):
"""
Pop PBB action
This action pops the outermost PBB service instance header from
the packet.
"""
def __init__(self, type_=None, len_=None):
super(OFPActionPopPbb, self).__init__()
@classmethod
def parser(cls, buf, offset):
(type_, len_) = struct.unpack_from(
ofproto.OFP_ACTION_HEADER_PACK_STR, buf, offset)
return cls()
@classmethod
def parser(cls, buf, offset):
(type_, len_) = struct.unpack_from(
ofproto.OFP_ACTION_HEADER_PACK_STR, buf, offset)
return cls()
@OFPAction.register_action_type(
ofproto.OFPAT_EXPERIMENTER,
ofproto.OFP_ACTION_EXPERIMENTER_HEADER_SIZE)
class OFPActionExperimenter(OFPAction):
"""
Experimenter action
This action is an extensible action for the experimenter.
================ ======================================================
Attribute Description
================ ======================================================
experimenter Experimenter ID
================ ======================================================
"""
def __init__(self, experimenter):
super(OFPActionExperimenter, self).__init__()
self.type = ofproto.OFPAT_EXPERIMENTER
self.experimenter = experimenter
self.len = None
@classmethod
def parser(cls, buf, offset):
(type_, len_, experimenter) = struct.unpack_from(
ofproto.OFP_ACTION_EXPERIMENTER_HEADER_PACK_STR, buf, offset)
data = buf[(offset + ofproto.OFP_ACTION_EXPERIMENTER_HEADER_SIZE
): offset + len_]
if experimenter == ofproto_common.NX_EXPERIMENTER_ID:
obj = NXAction.parse(data)
else:
obj = OFPActionExperimenterUnknown(experimenter, data)
obj.len = len_
return obj
def serialize(self, buf, offset):
msg_pack_into(ofproto.OFP_ACTION_EXPERIMENTER_HEADER_PACK_STR,
buf, offset, self.type, self.len, self.experimenter)
class OFPActionExperimenterUnknown(OFPActionExperimenter):
def __init__(self, experimenter, data=None, type_=None, len_=None):
super(OFPActionExperimenterUnknown,
self).__init__(experimenter=experimenter)
self.data = data
def serialize(self, buf, offset):
# fixup
data = self.data
if data is None:
data = bytearray()
self.len = (utils.round_up(len(data), 8) +
ofproto.OFP_ACTION_EXPERIMENTER_HEADER_SIZE)
super(OFPActionExperimenterUnknown, self).serialize(buf, offset)
msg_pack_into('!%ds' % len(self.data),
buf,
offset + ofproto.OFP_ACTION_EXPERIMENTER_HEADER_SIZE,
self.data)
class OFPBucket(StringifyMixin):
def __init__(self, weight=0, watch_port=ofproto.OFPP_ANY,
watch_group=ofproto.OFPG_ANY, actions=None, len_=None):
super(OFPBucket, self).__init__()
self.weight = weight
self.watch_port = watch_port
self.watch_group = watch_group
self.actions = actions
@classmethod
def parser(cls, buf, offset):
(len_, weight, watch_port, watch_group) = struct.unpack_from(
ofproto.OFP_BUCKET_PACK_STR, buf, offset)
msg = cls(weight, watch_port, watch_group, [])
msg.len = len_
length = ofproto.OFP_BUCKET_SIZE
offset += ofproto.OFP_BUCKET_SIZE
while length < msg.len:
action = OFPAction.parser(buf, offset)
msg.actions.append(action)
offset += action.len
length += action.len
return msg
def serialize(self, buf, offset):
action_offset = offset + ofproto.OFP_BUCKET_SIZE
action_len = 0
for a in self.actions:
a.serialize(buf, action_offset)
action_offset += a.len
action_len += a.len
self.len = utils.round_up(ofproto.OFP_BUCKET_SIZE + action_len, 8)
msg_pack_into(ofproto.OFP_BUCKET_PACK_STR, buf, offset,
self.len, self.weight, self.watch_port,
self.watch_group)
@_set_msg_type(ofproto.OFPT_GROUP_MOD)
class OFPGroupMod(MsgBase):
"""
Modify group entry message
The controller sends this message to modify the group table.
================ ======================================================
Attribute Description
================ ======================================================
command One of the following values.
| OFPGC_ADD
| OFPGC_MODIFY
| OFPGC_DELETE
type One of the following values.
| OFPGT_ALL
| OFPGT_SELECT
| OFPGT_INDIRECT
| OFPGT_FF
group_id Group identifier
buckets list of ``OFPBucket``
================ ======================================================
``type`` attribute corresponds to ``type_`` parameter of __init__.
Example::
def send_group_mod(self, datapath):
ofp = datapath.ofproto
ofp_parser = datapath.ofproto_parser
port = 1
max_len = 2000
actions = [ofp_parser.OFPActionOutput(port, max_len)]
weight = 100
watch_port = 0
watch_group = 0
buckets = [ofp_parser.OFPBucket(weight, watch_port, watch_group,
actions)]
group_id = 1
req = ofp_parser.OFPGroupMod(datapath, ofp.OFPGC_ADD,
ofp.OFPGT_SELECT, group_id, buckets)
datapath.send_msg(req)
"""
def __init__(self, datapath, command=ofproto.OFPGC_ADD,
type_=ofproto.OFPGT_ALL, group_id=0, buckets=[]):
super(OFPGroupMod, self).__init__(datapath)
self.command = command
self.type = type_
self.group_id = group_id
self.buckets = buckets
def _serialize_body(self):
msg_pack_into(ofproto.OFP_GROUP_MOD_PACK_STR, self.buf,
ofproto.OFP_HEADER_SIZE,
self.command, self.type, self.group_id)
offset = ofproto.OFP_GROUP_MOD_SIZE
for b in self.buckets:
b.serialize(self.buf, offset)
offset += b.len
@_set_msg_type(ofproto.OFPT_PORT_MOD)
class OFPPortMod(MsgBase):
"""
Port modification message
The controller sneds this message to modify the behavior of the port.
================ ======================================================
Attribute Description
================ ======================================================
port_no Port number to modify
hw_addr The hardware address that must be the same as hw_addr
of ``OFPPort`` of ``OFPSwitchFeatures``
config Bitmap of configuration flags.
| OFPPC_PORT_DOWN
| OFPPC_NO_RECV
| OFPPC_NO_FWD
| OFPPC_NO_PACKET_IN
mask Bitmap of configuration flags above to be changed
advertise Bitmap of the following flags.
| OFPPF_10MB_HD
| OFPPF_10MB_FD
| OFPPF_100MB_HD
| OFPPF_100MB_FD
| OFPPF_1GB_HD
| OFPPF_1GB_FD
| OFPPF_10GB_FD
| OFPPF_40GB_FD
| OFPPF_100GB_FD
| OFPPF_1TB_FD
| OFPPF_OTHER
| OFPPF_COPPER
| OFPPF_FIBER
| OFPPF_AUTONEG
| OFPPF_PAUSE
| OFPPF_PAUSE_ASYM
================ ======================================================
Example::
def send_port_mod(self, datapath):
ofp = datapath.ofproto
ofp_parser = datapath.ofproto_parser
port_no = 3
hw_addr = 'fa:c8:e8:76:1d:7e'
config = 0
mask = (ofp.OFPPC_PORT_DOWN | ofp.OFPPC_NO_RECV |
ofp.OFPPC_NO_FWD | ofp.OFPPC_NO_PACKET_IN)
advertise = (ofp.OFPPF_10MB_HD | ofp.OFPPF_100MB_FD |
ofp.OFPPF_1GB_FD | ofp.OFPPF_COPPER |
ofp.OFPPF_AUTONEG | ofp.OFPPF_PAUSE |
ofp.OFPPF_PAUSE_ASYM)
req = ofp_parser.OFPPortMod(datapath, port_no, hw_addr, config,
mask, advertise)
datapath.send_msg(req)
"""
_TYPE = {
'ascii': [
'hw_addr',
]
}
def __init__(self, datapath, port_no=0, hw_addr='00:00:00:00:00:00',
config=0, mask=0, advertise=0):
super(OFPPortMod, self).__init__(datapath)
self.port_no = port_no
self.hw_addr = hw_addr
self.config = config
self.mask = mask
self.advertise = advertise
def _serialize_body(self):
msg_pack_into(ofproto.OFP_PORT_MOD_PACK_STR, self.buf,
ofproto.OFP_HEADER_SIZE,
self.port_no, addrconv.mac.text_to_bin(self.hw_addr),
self.config,
self.mask, self.advertise)
@_set_msg_type(ofproto.OFPT_METER_MOD)
class OFPMeterMod(MsgBase):
"""
Meter modification message
The controller sends this message to modify the meter.
================ ======================================================
Attribute Description
================ ======================================================
command One of the following values.
| OFPMC_ADD
| OFPMC_MODIFY
| OFPMC_DELETE
flags Bitmap of the following flags.
| OFPMF_KBPS
| OFPMF_PKTPS
| OFPMF_BURST
| OFPMF_STATS
meter_id Meter instance
bands list of the following class instance.
| OFPMeterBandDrop
| OFPMeterBandDscpRemark
| OFPMeterBandExperimenter
================ ======================================================
"""
def __init__(self, datapath, command=ofproto.OFPMC_ADD,
flags=ofproto.OFPMF_KBPS, meter_id=1, bands=[]):
super(OFPMeterMod, self).__init__(datapath)
self.command = command
self.flags = flags
self.meter_id = meter_id
self.bands = bands
def _serialize_body(self):
msg_pack_into(ofproto.OFP_METER_MOD_PACK_STR, self.buf,
ofproto.OFP_HEADER_SIZE,
self.command, self.flags, self.meter_id)
offset = ofproto.OFP_METER_MOD_SIZE
for b in self.bands:
b.serialize(self.buf, offset)
offset += b.len
@_set_msg_type(ofproto.OFPT_TABLE_MOD)
class OFPTableMod(MsgBase):
"""
Flow table configuration message
The controller sends this message to configure table state.
================ ======================================================
Attribute Description
================ ======================================================
table_id ID of the table (OFPTT_ALL indicates all tables)
config Bitmap of the following flags.
OFPTC_DEPRECATED_MASK (3)
================ ======================================================
Example::
def send_table_mod(self, datapath):
ofp = datapath.ofproto
ofp_parser = datapath.ofproto_parser
req = ofp_parser.OFPTableMod(datapath, 1, 3)
datapath.send_msg(req)
"""
def __init__(self, datapath, table_id, config):
super(OFPTableMod, self).__init__(datapath)
self.table_id = table_id
self.config = config
def _serialize_body(self):
msg_pack_into(ofproto.OFP_TABLE_MOD_PACK_STR, self.buf,
ofproto.OFP_HEADER_SIZE,
self.table_id, self.config)
def _set_stats_type(stats_type, stats_body_cls):
def _set_cls_stats_type(cls):
cls.cls_stats_type = stats_type
cls.cls_stats_body_cls = stats_body_cls
return cls
return _set_cls_stats_type
@_set_msg_type(ofproto.OFPT_MULTIPART_REQUEST)
class OFPMultipartRequest(MsgBase):
def __init__(self, datapath, flags):
super(OFPMultipartRequest, self).__init__(datapath)
self.type = self.__class__.cls_stats_type
self.flags = flags
def _serialize_stats_body(self):
pass
def _serialize_body(self):
msg_pack_into(ofproto.OFP_MULTIPART_REQUEST_PACK_STR,
self.buf, ofproto.OFP_HEADER_SIZE,
self.type, self.flags)
self._serialize_stats_body()
@_register_parser
@_set_msg_type(ofproto.OFPT_MULTIPART_REPLY)
class OFPMultipartReply(MsgBase):
_STATS_MSG_TYPES = {}
@staticmethod
def register_stats_type(body_single_struct=False):
def _register_stats_type(cls):
assert cls.cls_stats_type is not None
assert cls.cls_stats_type not in OFPMultipartReply._STATS_MSG_TYPES
assert cls.cls_stats_body_cls is not None
cls.cls_body_single_struct = body_single_struct
OFPMultipartReply._STATS_MSG_TYPES[cls.cls_stats_type] = cls
return cls
return _register_stats_type
def __init__(self, datapath, body=None, flags=None):
super(OFPMultipartReply, self).__init__(datapath)
self.body = body
self.flags = flags
@classmethod
def parser_stats_body(cls, buf, msg_len, offset):
body_cls = cls.cls_stats_body_cls
body = []
while offset < msg_len:
entry = body_cls.parser(buf, offset)
body.append(entry)
offset += entry.length
if cls.cls_body_single_struct:
return body[0]
return body
@classmethod
def parser_stats(cls, datapath, version, msg_type, msg_len, xid, buf):
msg = MsgBase.parser.__func__(
cls, datapath, version, msg_type, msg_len, xid, buf)
msg.body = msg.parser_stats_body(msg.buf, msg.msg_len,
ofproto.OFP_MULTIPART_REPLY_SIZE)
return msg
@classmethod
def parser(cls, datapath, version, msg_type, msg_len, xid, buf):
type_, flags = struct.unpack_from(
ofproto.OFP_MULTIPART_REPLY_PACK_STR, buffer(buf),
ofproto.OFP_HEADER_SIZE)
stats_type_cls = cls._STATS_MSG_TYPES.get(type_)
msg = super(OFPMultipartReply, stats_type_cls).parser(
datapath, version, msg_type, msg_len, xid, buf)
msg.type = type_
msg.flags = flags
offset = ofproto.OFP_MULTIPART_REPLY_SIZE
body = []
while offset < msg_len:
b = stats_type_cls.cls_stats_body_cls.parser(msg.buf, offset)
body.append(b)
offset += b.length if hasattr(b, 'length') else b.len
if stats_type_cls.cls_body_single_struct:
msg.body = body[0]
else:
msg.body = body
return msg
class OFPDescStats(ofproto_parser.namedtuple('OFPDescStats', (
'mfr_desc', 'hw_desc', 'sw_desc', 'serial_num', 'dp_desc'))):
_TYPE = {
'ascii': [
'mfr_desc',
'hw_desc',
'sw_desc',
'serial_num',
'dp_desc',
]
}
@classmethod
def parser(cls, buf, offset):
desc = struct.unpack_from(ofproto.OFP_DESC_PACK_STR,
buf, offset)
desc = list(desc)
desc = map(lambda x: x.rstrip('\0'), desc)
stats = cls(*desc)
stats.length = ofproto.OFP_DESC_SIZE
return stats
@_set_stats_type(ofproto.OFPMP_DESC, OFPDescStats)
@_set_msg_type(ofproto.OFPT_MULTIPART_REQUEST)
class OFPDescStatsRequest(OFPMultipartRequest):
"""
Description statistics request message
The controller uses this message to query description of the switch.
================ ======================================================
Attribute Description
================ ======================================================
flags Zero or ``OFPMPF_REQ_MORE``
================ ======================================================
Example::
def send_desc_stats_request(self, datapath):
ofp = datapath.ofproto
ofp_parser = datapath.ofproto_parser
req = ofp_parser.OFPDescStatsRequest(datapath, 0)
datapath.send_msg(req)
"""
def __init__(self, datapath, flags=0, type_=None):
super(OFPDescStatsRequest, self).__init__(datapath, flags)
@OFPMultipartReply.register_stats_type(body_single_struct=True)
@_set_stats_type(ofproto.OFPMP_DESC, OFPDescStats)
@_set_msg_type(ofproto.OFPT_MULTIPART_REPLY)
class OFPDescStatsReply(OFPMultipartReply):
"""
Description statistics reply message
The switch responds with this message to a description statistics
request.
================ ======================================================
Attribute Description
================ ======================================================
body Instance of ``OFPDescStats``
================ ======================================================
Example::
@set_ev_cls(ofp_event.EventOFPDescStatsReply, MAIN_DISPATCHER)
def desc_stats_reply_handler(self, ev):
body = ev.msg.body
self.logger.debug('DescStats: mfr_desc=%s hw_desc=%s sw_desc=%s '
'serial_num=%s dp_desc=%s',
body.mfr_desc, body.hw_desc, body.sw_desc,
body.serial_num, body.dp_desc)
"""
def __init__(self, datapath, type_=None, **kwargs):
super(OFPDescStatsReply, self).__init__(datapath, **kwargs)
class OFPFlowStats(StringifyMixin):
def __init__(self, table_id=None, duration_sec=None, duration_nsec=None,
priority=None, idle_timeout=None, hard_timeout=None,
flags=None, cookie=None, packet_count=None,
byte_count=None, match=None, instructions=None,
length=None):
super(OFPFlowStats, self).__init__()
self.length = 0
self.table_id = table_id
self.duration_sec = duration_sec
self.duration_nsec = duration_nsec
self.priority = priority
self.idle_timeout = idle_timeout
self.hard_timeout = hard_timeout
self.flags = flags
self.cookie = cookie
self.packet_count = packet_count
self.byte_count = byte_count
self.match = match
self.instructions = instructions
@classmethod
def parser(cls, buf, offset):
flow_stats = cls()
(flow_stats.length, flow_stats.table_id,
flow_stats.duration_sec, flow_stats.duration_nsec,
flow_stats.priority, flow_stats.idle_timeout,
flow_stats.hard_timeout, flow_stats.flags,
flow_stats.cookie, flow_stats.packet_count,
flow_stats.byte_count) = struct.unpack_from(
ofproto.OFP_FLOW_STATS_0_PACK_STR, buf, offset)
offset += ofproto.OFP_FLOW_STATS_0_SIZE
flow_stats.match = OFPMatch.parser(buf, offset)
match_length = utils.round_up(flow_stats.match.length, 8)
inst_length = (flow_stats.length - (ofproto.OFP_FLOW_STATS_SIZE -
ofproto.OFP_MATCH_SIZE +
match_length))
offset += match_length
instructions = []
while inst_length > 0:
inst = OFPInstruction.parser(buf, offset)
instructions.append(inst)
offset += inst.len
inst_length -= inst.len
flow_stats.instructions = instructions
return flow_stats
class OFPFlowStatsRequestBase(OFPMultipartRequest):
def __init__(self, datapath, flags, table_id, out_port, out_group,
cookie, cookie_mask, match):
super(OFPFlowStatsRequestBase, self).__init__(datapath, flags)
self.table_id = table_id
self.out_port = out_port
self.out_group = out_group
self.cookie = cookie
self.cookie_mask = cookie_mask
self.match = match
def _serialize_stats_body(self):
offset = ofproto.OFP_MULTIPART_REQUEST_SIZE
msg_pack_into(ofproto.OFP_FLOW_STATS_REQUEST_0_PACK_STR,
self.buf, offset, self.table_id, self.out_port,
self.out_group, self.cookie, self.cookie_mask)
offset += ofproto.OFP_FLOW_STATS_REQUEST_0_SIZE
self.match.serialize(self.buf, offset)
@_set_stats_type(ofproto.OFPMP_FLOW, OFPFlowStats)
@_set_msg_type(ofproto.OFPT_MULTIPART_REQUEST)
class OFPFlowStatsRequest(OFPFlowStatsRequestBase):
"""
Individual flow statistics request message
The controller uses this message to query individual flow statistics.
================ ======================================================
Attribute Description
================ ======================================================
flags Zero or ``OFPMPF_REQ_MORE``
table_id ID of table to read
out_port Require matching entries to include this as an output
port
out_group Require matching entries to include this as an output
group
cookie Require matching entries to contain this cookie value
cookie_mask Mask used to restrict the cookie bits that must match
match Instance of ``OFPMatch``
================ ======================================================
Example::
def send_flow_stats_request(self, datapath):
ofp = datapath.ofproto
ofp_parser = datapath.ofproto_parser
cookie = cookie_mask = 0
match = ofp_parser.OFPMatch(in_port=1)
req = ofp_parser.OFPFlowStatsRequest(datapath, 0,
ofp.OFPTT_ALL,
ofp.OFPP_ANY, ofp.OFPG_ANY,
cookie, cookie_mask,
match)
datapath.send_msg(req)
"""
def __init__(self, datapath, flags=0, table_id=ofproto.OFPTT_ALL,
out_port=ofproto.OFPP_ANY,
out_group=ofproto.OFPG_ANY,
cookie=0, cookie_mask=0, match=None, type_=None):
if match is None:
match = OFPMatch()
super(OFPFlowStatsRequest, self).__init__(datapath, flags, table_id,
out_port, out_group,
cookie, cookie_mask, match)
@OFPMultipartReply.register_stats_type()
@_set_stats_type(ofproto.OFPMP_FLOW, OFPFlowStats)
@_set_msg_type(ofproto.OFPT_MULTIPART_REPLY)
class OFPFlowStatsReply(OFPMultipartReply):
"""
Individual flow statistics reply message
The switch responds with this message to an individual flow statistics
request.
================ ======================================================
Attribute Description
================ ======================================================
body List of ``OFPFlowStats`` instance
================ ======================================================
Example::
@set_ev_cls(ofp_event.EventOFPFlowStatsReply, MAIN_DISPATCHER)
def flow_stats_reply_handler(self, ev):
flows = []
for stat in ev.msg.body:
flows.append('table_id=%s '
'duration_sec=%d duration_nsec=%d '
'priority=%d '
'idle_timeout=%d hard_timeout=%d flags=0x%04x '
'cookie=%d packet_count=%d byte_count=%d '
'match=%s instructions=%s' %
(stat.table_id,
stat.duration_sec, stat.duration_nsec,
stat.priority,
stat.idle_timeout, stat.hard_timeout, stat.flags,
stat.cookie, stat.packet_count, stat.byte_count,
stat.match, stat.instructions))
self.logger.debug('FlowStats: %s', flows)
"""
def __init__(self, datapath, type_=None, **kwargs):
super(OFPFlowStatsReply, self).__init__(datapath, **kwargs)
class OFPAggregateStats(ofproto_parser.namedtuple('OFPAggregateStats', (
'packet_count', 'byte_count', 'flow_count'))):
@classmethod
def parser(cls, buf, offset):
agg = struct.unpack_from(
ofproto.OFP_AGGREGATE_STATS_REPLY_PACK_STR, buf, offset)
stats = cls(*agg)
stats.length = ofproto.OFP_AGGREGATE_STATS_REPLY_SIZE
return stats
@_set_stats_type(ofproto.OFPMP_AGGREGATE, OFPAggregateStats)
@_set_msg_type(ofproto.OFPT_MULTIPART_REQUEST)
class OFPAggregateStatsRequest(OFPFlowStatsRequestBase):
"""
Aggregate flow statistics request message
The controller uses this message to query aggregate flow statictics.
================ ======================================================
Attribute Description
================ ======================================================
flags Zero or ``OFPMPF_REQ_MORE``
table_id ID of table to read
out_port Require matching entries to include this as an output
port
out_group Require matching entries to include this as an output
group
cookie Require matching entries to contain this cookie value
cookie_mask Mask used to restrict the cookie bits that must match
match Instance of ``OFPMatch``
================ ======================================================
Example::
def send_aggregate_stats_request(self, datapath):
ofp = datapath.ofproto
ofp_parser = datapath.ofproto_parser
cookie = cookie_mask = 0
match = ofp_parser.OFPMatch(in_port=1)
req = ofp_parser.OFPAggregateStatsRequest(datapath, 0,
ofp.OFPTT_ALL,
ofp.OFPP_ANY,
ofp.OFPG_ANY,
cookie, cookie_mask,
match)
datapath.send_msg(req)
"""
def __init__(self, datapath, flags, table_id, out_port, out_group,
cookie, cookie_mask, match, type_=None):
super(OFPAggregateStatsRequest, self).__init__(datapath,
flags,
table_id,
out_port,
out_group,
cookie,
cookie_mask,
match)
@OFPMultipartReply.register_stats_type(body_single_struct=True)
@_set_stats_type(ofproto.OFPMP_AGGREGATE, OFPAggregateStats)
@_set_msg_type(ofproto.OFPT_MULTIPART_REPLY)
class OFPAggregateStatsReply(OFPMultipartReply):
"""
Aggregate flow statistics reply message
The switch responds with this message to an aggregate flow statistics
request.
================ ======================================================
Attribute Description
================ ======================================================
body Instance of ``OFPAggregateStats``
================ ======================================================
Example::
@set_ev_cls(ofp_event.EventOFPAggregateStatsReply, MAIN_DISPATCHER)
def aggregate_stats_reply_handler(self, ev):
body = ev.msg.body
self.logger.debug('AggregateStats: packet_count=%d byte_count=%d '
'flow_count=%d',
body.packet_count, body.byte_count,
body.flow_count)
"""
def __init__(self, datapath, type_=None, **kwargs):
super(OFPAggregateStatsReply, self).__init__(datapath, **kwargs)
class OFPTableStats(ofproto_parser.namedtuple('OFPTableStats', (
'table_id', 'active_count', 'lookup_count',
'matched_count'))):
@classmethod
def parser(cls, buf, offset):
tbl = struct.unpack_from(ofproto.OFP_TABLE_STATS_PACK_STR,
buf, offset)
stats = cls(*tbl)
stats.length = ofproto.OFP_TABLE_STATS_SIZE
return stats
@_set_stats_type(ofproto.OFPMP_TABLE, OFPTableStats)
@_set_msg_type(ofproto.OFPT_MULTIPART_REQUEST)
class OFPTableStatsRequest(OFPMultipartRequest):
"""
Table statistics request message
The controller uses this message to query flow table statictics.
================ ======================================================
Attribute Description
================ ======================================================
flags Zero or ``OFPMPF_REQ_MORE``
================ ======================================================
Example::
def send_table_stats_request(self, datapath):
ofp = datapath.ofproto
ofp_parser = datapath.ofproto_parser
req = ofp_parser.OFPTableStatsRequest(datapath, 0)
datapath.send_msg(req)
"""
def __init__(self, datapath, flags=0, type_=None):
super(OFPTableStatsRequest, self).__init__(datapath, flags)
@OFPMultipartReply.register_stats_type()
@_set_stats_type(ofproto.OFPMP_TABLE, OFPTableStats)
@_set_msg_type(ofproto.OFPT_MULTIPART_REPLY)
class OFPTableStatsReply(OFPMultipartReply):
"""
Table statistics reply message
The switch responds with this message to a table statistics request.
================ ======================================================
Attribute Description
================ ======================================================
body List of ``OFPTableStats`` instance
================ ======================================================
Example::
@set_ev_cls(ofp_event.EventOFPTableStatsReply, MAIN_DISPATCHER)
def table_stats_reply_handler(self, ev):
tables = []
for stat in ev.msg.body:
tables.append('table_id=%d active_count=%d lookup_count=%d '
' matched_count=%d' %
(stat.table_id, stat.active_count,
stat.lookup_count, stat.matched_count))
self.logger.debug('TableStats: %s', tables)
"""
def __init__(self, datapath, type_=None, **kwargs):
super(OFPTableStatsReply, self).__init__(datapath, **kwargs)
class OFPPortStats(ofproto_parser.namedtuple('OFPPortStats', (
'port_no', 'rx_packets', 'tx_packets', 'rx_bytes', 'tx_bytes',
'rx_dropped', 'tx_dropped', 'rx_errors', 'tx_errors',
'rx_frame_err', 'rx_over_err', 'rx_crc_err', 'collisions',
'duration_sec', 'duration_nsec'))):
@classmethod
def parser(cls, buf, offset):
port = struct.unpack_from(ofproto.OFP_PORT_STATS_PACK_STR,
buf, offset)
stats = cls(*port)
stats.length = ofproto.OFP_PORT_STATS_SIZE
return stats
@_set_stats_type(ofproto.OFPMP_PORT_STATS, OFPPortStats)
@_set_msg_type(ofproto.OFPT_MULTIPART_REQUEST)
class OFPPortStatsRequest(OFPMultipartRequest):
"""
Port statistics request message
The controller uses this message to query information about ports
statistics.
================ ======================================================
Attribute Description
================ ======================================================
flags Zero or ``OFPMPF_REQ_MORE``
port_no Port number to read (OFPP_ANY to all ports)
================ ======================================================
Example::
def send_port_stats_request(self, datapath):
ofp = datapath.ofproto
ofp_parser = datapath.ofproto_parser
req = ofp_parser.OFPPortStatsRequest(datapath, 0, ofp.OFPP_ANY)
datapath.send_msg(req)
"""
def __init__(self, datapath, flags=0, port_no=ofproto.OFPP_ANY,
type_=None):
super(OFPPortStatsRequest, self).__init__(datapath, flags)
self.port_no = port_no
def _serialize_stats_body(self):
msg_pack_into(ofproto.OFP_PORT_STATS_REQUEST_PACK_STR,
self.buf,
ofproto.OFP_MULTIPART_REQUEST_SIZE,
self.port_no)
@OFPMultipartReply.register_stats_type()
@_set_stats_type(ofproto.OFPMP_PORT_STATS, OFPPortStats)
@_set_msg_type(ofproto.OFPT_MULTIPART_REPLY)
class OFPPortStatsReply(OFPMultipartReply):
"""
Port statistics reply message
The switch responds with this message to a port statistics request.
================ ======================================================
Attribute Description
================ ======================================================
body List of ``OFPPortStats`` instance
================ ======================================================
Example::
@set_ev_cls(ofp_event.EventOFPPortStatsReply, MAIN_DISPATCHER)
def port_stats_reply_handler(self, ev):
ports = []
for stat in ev.msg.body:
ports.append('port_no=%d '
'rx_packets=%d tx_packets=%d '
'rx_bytes=%d tx_bytes=%d '
'rx_dropped=%d tx_dropped=%d '
'rx_errors=%d tx_errors=%d '
'rx_frame_err=%d rx_over_err=%d rx_crc_err=%d '
'collisions=%d duration_sec=%d duration_nsec=%d' %
(stat.port_no,
stat.rx_packets, stat.tx_packets,
stat.rx_bytes, stat.tx_bytes,
stat.rx_dropped, stat.tx_dropped,
stat.rx_errors, stat.tx_errors,
stat.rx_frame_err, stat.rx_over_err,
stat.rx_crc_err, stat.collisions,
stat.duration_sec, stat.duration_nsec))
self.logger.debug('PortStats: %s', ports)
"""
def __init__(self, datapath, type_=None, **kwargs):
super(OFPPortStatsReply, self).__init__(datapath, **kwargs)
class OFPQueueStats(ofproto_parser.namedtuple('OFPQueueStats', (
'port_no', 'queue_id', 'tx_bytes', 'tx_packets', 'tx_errors',
'duration_sec', 'duration_nsec'))):
@classmethod
def parser(cls, buf, offset):
queue = struct.unpack_from(ofproto.OFP_QUEUE_STATS_PACK_STR,
buf, offset)
stats = cls(*queue)
stats.length = ofproto.OFP_QUEUE_STATS_SIZE
return stats
@_set_stats_type(ofproto.OFPMP_QUEUE, OFPQueueStats)
@_set_msg_type(ofproto.OFPT_MULTIPART_REQUEST)
class OFPQueueStatsRequest(OFPMultipartRequest):
"""
Queue statistics request message
The controller uses this message to query queue statictics.
================ ======================================================
Attribute Description
================ ======================================================
flags Zero or ``OFPMPF_REQ_MORE``
port_no Port number to read
queue_id ID of queue to read
================ ======================================================
Example::
def send_queue_stats_request(self, datapath):
ofp = datapath.ofproto
ofp_parser = datapath.ofproto_parser
req = ofp_parser.OFPQueueStatsRequest(datapath, 0, ofp.OFPP_ANY,
ofp.OFPQ_ALL)
datapath.send_msg(req)
"""
def __init__(self, datapath, flags=0, port_no=ofproto.OFPP_ANY,
queue_id=ofproto.OFPQ_ALL, type_=None):
super(OFPQueueStatsRequest, self).__init__(datapath, flags)
self.port_no = port_no
self.queue_id = queue_id
def _serialize_stats_body(self):
msg_pack_into(ofproto.OFP_QUEUE_STATS_REQUEST_PACK_STR,
self.buf,
ofproto.OFP_MULTIPART_REQUEST_SIZE,
self.port_no, self.queue_id)
@OFPMultipartReply.register_stats_type()
@_set_stats_type(ofproto.OFPMP_QUEUE, OFPQueueStats)
@_set_msg_type(ofproto.OFPT_MULTIPART_REPLY)
class OFPQueueStatsReply(OFPMultipartReply):
"""
Queue statistics reply message
The switch responds with this message to an aggregate flow statistics
request.
================ ======================================================
Attribute Description
================ ======================================================
body List of ``OFPQueueStats`` instance
================ ======================================================
Example::
@set_ev_cls(ofp_event.EventOFPQueueStatsReply, MAIN_DISPATCHER)
def queue_stats_reply_handler(self, ev):
queues = []
for stat in ev.msg.body:
queues.append('port_no=%d queue_id=%d '
'tx_bytes=%d tx_packets=%d tx_errors=%d '
'duration_sec=%d duration_nsec=%d' %
(stat.port_no, stat.queue_id,
stat.tx_bytes, stat.tx_packets, stat.tx_errors,
stat.duration_sec, stat.duration_nsec))
self.logger.debug('QueueStats: %s', queues)
"""
def __init__(self, datapath, type_=None, **kwargs):
super(OFPQueueStatsReply, self).__init__(datapath, **kwargs)
class OFPBucketCounter(StringifyMixin):
def __init__(self, packet_count, byte_count):
super(OFPBucketCounter, self).__init__()
self.packet_count = packet_count
self.byte_count = byte_count
@classmethod
def parser(cls, buf, offset):
packet_count, byte_count = struct.unpack_from(
ofproto.OFP_BUCKET_COUNTER_PACK_STR, buf, offset)
return cls(packet_count, byte_count)
class OFPGroupStats(StringifyMixin):
def __init__(self, length=None, group_id=None, ref_count=None,
packet_count=None, byte_count=None, duration_sec=None,
duration_nsec=None, bucket_stats=None):
super(OFPGroupStats, self).__init__()
self.length = length
self.group_id = group_id
self.ref_count = ref_count
self.packet_count = packet_count
self.byte_count = byte_count
self.duration_sec = duration_sec
self.duration_nsec = duration_nsec
self.bucket_stats = bucket_stats
@classmethod
def parser(cls, buf, offset):
group = struct.unpack_from(ofproto.OFP_GROUP_STATS_PACK_STR,
buf, offset)
group_stats = cls(*group)
group_stats.bucket_stats = []
total_len = group_stats.length + offset
offset += ofproto.OFP_GROUP_STATS_SIZE
while total_len > offset:
b = OFPBucketCounter.parser(buf, offset)
group_stats.bucket_stats.append(b)
offset += ofproto.OFP_BUCKET_COUNTER_SIZE
return group_stats
@_set_stats_type(ofproto.OFPMP_GROUP, OFPGroupStats)
@_set_msg_type(ofproto.OFPT_MULTIPART_REQUEST)
class OFPGroupStatsRequest(OFPMultipartRequest):
"""
Group statistics request message
The controller uses this message to query statistics of one or more
groups.
================ ======================================================
Attribute Description
================ ======================================================
flags Zero or ``OFPMPF_REQ_MORE``
group_id ID of group to read (OFPG_ALL to all groups)
================ ======================================================
Example::
def send_group_stats_request(self, datapath):
ofp = datapath.ofproto
ofp_parser = datapath.ofproto_parser
req = ofp_parser.OFPGroupStatsRequest(datapath, 0, ofp.OFPG_ALL)
datapath.send_msg(req)
"""
def __init__(self, datapath, flags=0, group_id=ofproto.OFPG_ALL,
type_=None):
super(OFPGroupStatsRequest, self).__init__(datapath, flags)
self.group_id = group_id
def _serialize_stats_body(self):
msg_pack_into(ofproto.OFP_GROUP_STATS_REQUEST_PACK_STR,
self.buf,
ofproto.OFP_MULTIPART_REQUEST_SIZE,
self.group_id)
@OFPMultipartReply.register_stats_type()
@_set_stats_type(ofproto.OFPMP_GROUP, OFPGroupStats)
@_set_msg_type(ofproto.OFPT_MULTIPART_REPLY)
class OFPGroupStatsReply(OFPMultipartReply):
"""
Group statistics reply message
The switch responds with this message to a group statistics request.
================ ======================================================
Attribute Description
================ ======================================================
body List of ``OFPGroupStats`` instance
================ ======================================================
Example::
@set_ev_cls(ofp_event.EventOFPGroupStatsReply, MAIN_DISPATCHER)
def group_stats_reply_handler(self, ev):
groups = []
for stat in ev.msg.body:
groups.append('length=%d group_id=%d '
'ref_count=%d packet_count=%d byte_count=%d '
'duration_sec=%d duration_nsec=%d' %
(stat.length, stat.group_id,
stat.ref_count, stat.packet_count,
stat.byte_count, stat.duration_sec,
stat.duration_nsec))
self.logger.debug('GroupStats: %s', groups)
"""
def __init__(self, datapath, type_=None, **kwargs):
super(OFPGroupStatsReply, self).__init__(datapath, **kwargs)
class OFPGroupDescStats(StringifyMixin):
def __init__(self, type_=None, group_id=None, buckets=None, length=None):
super(OFPGroupDescStats, self).__init__()
self.type = type_
self.group_id = group_id
self.buckets = buckets
@classmethod
def parser(cls, buf, offset):
stats = cls()
(stats.length, stats.type, stats.group_id) = struct.unpack_from(
ofproto.OFP_GROUP_DESC_STATS_PACK_STR, buf, offset)
offset += ofproto.OFP_GROUP_DESC_STATS_SIZE
stats.buckets = []
length = ofproto.OFP_GROUP_DESC_STATS_SIZE
while length < stats.length:
bucket = OFPBucket.parser(buf, offset)
stats.buckets.append(bucket)
offset += bucket.len
length += bucket.len
return stats
@_set_stats_type(ofproto.OFPMP_GROUP_DESC, OFPGroupDescStats)
@_set_msg_type(ofproto.OFPT_MULTIPART_REQUEST)
class OFPGroupDescStatsRequest(OFPMultipartRequest):
"""
Group description request message
The controller uses this message to list the set of groups on a switch.
================ ======================================================
Attribute Description
================ ======================================================
flags Zero or ``OFPMPF_REQ_MORE``
================ ======================================================
Example::
def send_group_desc_stats_request(self, datapath):
ofp = datapath.ofproto
ofp_parser = datapath.ofproto_parser
req = ofp_parser.OFPGroupDescStatsRequest(datapath, 0)
datapath.send_msg(req)
"""
def __init__(self, datapath, flags=0, type_=None):
super(OFPGroupDescStatsRequest, self).__init__(datapath, flags)
@OFPMultipartReply.register_stats_type()
@_set_stats_type(ofproto.OFPMP_GROUP_DESC, OFPGroupDescStats)
@_set_msg_type(ofproto.OFPT_MULTIPART_REPLY)
class OFPGroupDescStatsReply(OFPMultipartReply):
"""
Group description reply message
The switch responds with this message to a group description request.
================ ======================================================
Attribute Description
================ ======================================================
body List of ``OFPGroupDescStats`` instance
================ ======================================================
Example::
@set_ev_cls(ofp_event.EventOFPGroupDescStatsReply, MAIN_DISPATCHER)
def group_desc_stats_reply_handler(self, ev):
descs = []
for stat in ev.msg.body:
descs.append('length=%d type=%d group_id=%d '
'buckets=%s' %
(stat.length, stat.type, stat.group_id,
stat.bucket))
self.logger.debug('GroupDescStats: %s', groups)
"""
def __init__(self, datapath, type_=None, **kwargs):
super(OFPGroupDescStatsReply, self).__init__(datapath, **kwargs)
class OFPGroupFeaturesStats(ofproto_parser.namedtuple('OFPGroupFeaturesStats',
('types', 'capabilities', 'max_groups',
'actions'))):
@classmethod
def parser(cls, buf, offset):
group_features = struct.unpack_from(
ofproto.OFP_GROUP_FEATURES_PACK_STR, buf, offset)
types = group_features[0]
capabilities = group_features[1]
max_groups = list(group_features[2:6])
actions = list(group_features[6:10])
stats = cls(types, capabilities, max_groups, actions)
stats.length = ofproto.OFP_GROUP_FEATURES_SIZE
return stats
@_set_stats_type(ofproto.OFPMP_GROUP_FEATURES, OFPGroupFeaturesStats)
@_set_msg_type(ofproto.OFPT_MULTIPART_REQUEST)
class OFPGroupFeaturesStatsRequest(OFPMultipartRequest):
"""
Group features request message
The controller uses this message to list the capabilities of groups on
a switch.
================ ======================================================
Attribute Description
================ ======================================================
flags Zero or ``OFPMPF_REQ_MORE``
================ ======================================================
Example::
def send_group_features_stats_request(self, datapath):
ofp = datapath.ofproto
ofp_parser = datapath.ofproto_parser
req = ofp_parser.OFPGroupFeaturesStatsRequest(datapath, 0)
datapath.send_msg(req)
"""
def __init__(self, datapath, flags=0, type_=None):
super(OFPGroupFeaturesStatsRequest, self).__init__(datapath, flags)
@OFPMultipartReply.register_stats_type(body_single_struct=True)
@_set_stats_type(ofproto.OFPMP_GROUP_FEATURES, OFPGroupFeaturesStats)
@_set_msg_type(ofproto.OFPT_MULTIPART_REPLY)
class OFPGroupFeaturesStatsReply(OFPMultipartReply):
"""
Group features reply message
The switch responds with this message to a group features request.
================ ======================================================
Attribute Description
================ ======================================================
body Instance of ``OFPGroupFeaturesStats``
================ ======================================================
Example::
@set_ev_cls(ofp_event.EventOFPGroupFeaturesStatsReply, MAIN_DISPATCHER)
def group_features_stats_reply_handler(self, ev):
body = ev.msg.body
self.logger.debug('GroupFeaturesStats: types=%d '
'capabilities=0x%08x max_groups=%s '
'actions=%s',
body.types, body.capabilities,
body.max_groups, body.actions)
"""
def __init__(self, datapath, type_=None, **kwargs):
super(OFPGroupFeaturesStatsReply, self).__init__(datapath, **kwargs)
class OFPMeterBandStats(StringifyMixin):
def __init__(self, packet_band_count, byte_band_count):
super(OFPMeterBandStats, self).__init__()
self.packet_band_count = packet_band_count
self.byte_band_count = byte_band_count
@classmethod
def parser(cls, buf, offset):
band_stats = struct.unpack_from(
ofproto.OFP_METER_BAND_STATS_PACK_STR, buf, offset)
return cls(*band_stats)
class OFPMeterStats(StringifyMixin):
def __init__(self, meter_id=None, flow_count=None, packet_in_count=None,
byte_in_count=None, duration_sec=None, duration_nsec=None,
band_stats=None, len_=None):
super(OFPMeterStats, self).__init__()
self.meter_id = meter_id
self.len = 0
self.flow_count = flow_count
self.packet_in_count = packet_in_count
self.byte_in_count = byte_in_count
self.duration_sec = duration_sec
self.duration_nsec = duration_nsec
self.band_stats = band_stats
@classmethod
def parser(cls, buf, offset):
meter_stats = cls()
(meter_stats.meter_id, meter_stats.len,
meter_stats.flow_count, meter_stats.packet_in_count,
meter_stats.byte_in_count, meter_stats.duration_sec,
meter_stats.duration_nsec) = struct.unpack_from(
ofproto.OFP_METER_STATS_PACK_STR, buf, offset)
offset += ofproto.OFP_METER_STATS_SIZE
meter_stats.band_stats = []
length = ofproto.OFP_METER_STATS_SIZE
while length < meter_stats.len:
band_stats = OFPMeterBandStats.parser(buf, offset)
meter_stats.band_stats.append(band_stats)
offset += ofproto.OFP_METER_BAND_STATS_SIZE
length += ofproto.OFP_METER_BAND_STATS_SIZE
return meter_stats
@_set_stats_type(ofproto.OFPMP_METER, OFPMeterStats)
@_set_msg_type(ofproto.OFPT_MULTIPART_REQUEST)
class OFPMeterStatsRequest(OFPMultipartRequest):
"""
Meter statistics request message
The controller uses this message to query statistics for one or more
meters.
================ ======================================================
Attribute Description
================ ======================================================
flags Zero or ``OFPMPF_REQ_MORE``
meter_id ID of meter to read (OFPM_ALL to all meters)
================ ======================================================
Example::
def send_meter_stats_request(self, datapath):
ofp = datapath.ofproto
ofp_parser = datapath.ofproto_parser
req = ofp_parser.OFPMeterStatsRequest(datapath, 0, ofp.OFPM_ALL)
datapath.send_msg(req)
"""
def __init__(self, datapath, flags=0, meter_id=ofproto.OFPM_ALL,
type_=None):
super(OFPMeterStatsRequest, self).__init__(datapath, flags)
self.meter_id = meter_id
def _serialize_stats_body(self):
msg_pack_into(ofproto.OFP_METER_MULTIPART_REQUEST_PACK_STR,
self.buf,
ofproto.OFP_MULTIPART_REQUEST_SIZE,
self.meter_id)
@OFPMultipartReply.register_stats_type()
@_set_stats_type(ofproto.OFPMP_METER, OFPMeterStats)
@_set_msg_type(ofproto.OFPT_MULTIPART_REPLY)
class OFPMeterStatsReply(OFPMultipartReply):
"""
Meter statistics reply message
The switch responds with this message to a meter statistics request.
================ ======================================================
Attribute Description
================ ======================================================
body List of ``OFPMeterStats`` instance
================ ======================================================
Example::
@set_ev_cls(ofp_event.EventOFPMeterStatsReply, MAIN_DISPATCHER)
def meter_stats_reply_handler(self, ev):
meters = []
for stat in ev.msg.body:
meters.append('meter_id=0x%08x len=%d flow_count=%d '
'packet_in_count=%d byte_in_count=%d '
'duration_sec=%d duration_nsec=%d '
'band_stats=%s' %
(stat.meter_id, stat.len, stat.flow_count,
stat.packet_in_count, stat.byte_in_count,
stat.duration_sec, stat.duration_nsec,
stat.band_stats))
self.logger.debug('MeterStats: %s', meters)
"""
def __init__(self, datapath, type_=None, **kwargs):
super(OFPMeterStatsReply, self).__init__(datapath, **kwargs)
class OFPMeterBand(StringifyMixin):
def __init__(self, type_, len_):
super(OFPMeterBand, self).__init__()
self.type = type_
self.len = len_
class OFPMeterBandHeader(OFPMeterBand):
_METER_BAND = {}
@staticmethod
def register_meter_band_type(type_, len_):
def _register_meter_band_type(cls):
OFPMeterBandHeader._METER_BAND[type_] = cls
cls.cls_meter_band_type = type_
cls.cls_meter_band_len = len_
return cls
return _register_meter_band_type
def __init__(self):
cls = self.__class__
super(OFPMeterBandHeader, self).__init__(cls.cls_meter_band_type,
cls.cls_meter_band_len)
@classmethod
def parser(cls, buf, offset):
type_, len_, _rate, _burst_size = struct.unpack_from(
ofproto.OFP_METER_BAND_HEADER_PACK_STR, buf, offset)
cls_ = cls._METER_BAND[type_]
assert cls_.cls_meter_band_len == len_
return cls_.parser(buf, offset)
@OFPMeterBandHeader.register_meter_band_type(
ofproto.OFPMBT_DROP, ofproto.OFP_METER_BAND_DROP_SIZE)
class OFPMeterBandDrop(OFPMeterBandHeader):
def __init__(self, rate=0, burst_size=0, type_=None, len_=None):
super(OFPMeterBandDrop, self).__init__()
self.rate = rate
self.burst_size = burst_size
def serialize(self, buf, offset):
msg_pack_into(ofproto.OFP_METER_BAND_DROP_PACK_STR, buf, offset,
self.type, self.len, self.rate, self.burst_size)
@classmethod
def parser(cls, buf, offset):
type_, len_, rate, burst_size = struct.unpack_from(
ofproto.OFP_METER_BAND_DROP_PACK_STR, buf, offset)
assert cls.cls_meter_band_type == type_
assert cls.cls_meter_band_len == len_
return cls(rate, burst_size)
@OFPMeterBandHeader.register_meter_band_type(
ofproto.OFPMBT_DSCP_REMARK,
ofproto.OFP_METER_BAND_DSCP_REMARK_SIZE)
class OFPMeterBandDscpRemark(OFPMeterBandHeader):
def __init__(self, rate=0, burst_size=0, prec_level=0,
type_=None, len_=None):
super(OFPMeterBandDscpRemark, self).__init__()
self.rate = rate
self.burst_size = burst_size
self.prec_level = prec_level
def serialize(self, buf, offset):
msg_pack_into(ofproto.OFP_METER_BAND_DSCP_REMARK_PACK_STR, buf,
offset, self.type, self.len, self.rate,
self.burst_size, self.prec_level)
@classmethod
def parser(cls, buf, offset):
type_, len_, rate, burst_size, prec_level = struct.unpack_from(
ofproto.OFP_METER_BAND_DSCP_REMARK_PACK_STR, buf, offset)
assert cls.cls_meter_band_type == type_
assert cls.cls_meter_band_len == len_
return cls(rate, burst_size, prec_level)
@OFPMeterBandHeader.register_meter_band_type(
ofproto.OFPMBT_EXPERIMENTER,
ofproto.OFP_METER_BAND_EXPERIMENTER_SIZE)
class OFPMeterBandExperimenter(OFPMeterBandHeader):
def __init__(self, rate=0, burst_size=0, experimenter=None,
type_=None, len_=None):
super(OFPMeterBandExperimenter, self).__init__()
self.rate = rate
self.burst_size = burst_size
self.experimenter = experimenter
def serialize(self, buf, offset):
msg_pack_into(ofproto.OFP_METER_BAND_EXPERIMENTER_PACK_STR, buf,
offset, self.type, self.len, self.rate,
self.burst_size, self.experimenter)
@classmethod
def parser(cls, buf, offset):
type_, len_, rate, burst_size, experimenter = struct.unpack_from(
ofproto.OFP_METER_BAND_EXPERIMENTER_PACK_STR, buf, offset)
assert cls.cls_meter_band_type == type_
assert cls.cls_meter_band_len == len_
return cls(rate, burst_size, experimenter)
class OFPMeterConfigStats(StringifyMixin):
def __init__(self, flags=None, meter_id=None, bands=None, length=None):
super(OFPMeterConfigStats, self).__init__()
self.length = None
self.flags = flags
self.meter_id = meter_id
self.bands = bands
@classmethod
def parser(cls, buf, offset):
meter_config = cls()
(meter_config.length, meter_config.flags,
meter_config.meter_id) = struct.unpack_from(
ofproto.OFP_METER_CONFIG_PACK_STR, buf, offset)
offset += ofproto.OFP_METER_CONFIG_SIZE
meter_config.bands = []
length = ofproto.OFP_METER_CONFIG_SIZE
while length < meter_config.length:
band = OFPMeterBandHeader.parser(buf, offset)
meter_config.bands.append(band)
offset += band.len
length += band.len
return meter_config
@_set_stats_type(ofproto.OFPMP_METER_CONFIG, OFPMeterConfigStats)
@_set_msg_type(ofproto.OFPT_MULTIPART_REQUEST)
class OFPMeterConfigStatsRequest(OFPMultipartRequest):
"""
Meter configuration statistics request message
The controller uses this message to query configuration for one or more
meters.
================ ======================================================
Attribute Description
================ ======================================================
flags Zero or ``OFPMPF_REQ_MORE``
meter_id ID of meter to read (OFPM_ALL to all meters)
================ ======================================================
Example::
def send_meter_config_stats_request(self, datapath):
ofp = datapath.ofproto
ofp_parser = datapath.ofproto_parser
req = ofp_parser.OFPMeterConfigStatsRequest(datapath, 0,
ofp.OFPM_ALL)
datapath.send_msg(req)
"""
def __init__(self, datapath, flags=0, meter_id=ofproto.OFPM_ALL,
type_=None):
super(OFPMeterConfigStatsRequest, self).__init__(datapath, flags)
self.meter_id = meter_id
def _serialize_stats_body(self):
msg_pack_into(ofproto.OFP_METER_MULTIPART_REQUEST_PACK_STR,
self.buf,
ofproto.OFP_MULTIPART_REQUEST_SIZE,
self.meter_id)
@OFPMultipartReply.register_stats_type()
@_set_stats_type(ofproto.OFPMP_METER_CONFIG, OFPMeterConfigStats)
@_set_msg_type(ofproto.OFPT_MULTIPART_REPLY)
class OFPMeterConfigStatsReply(OFPMultipartReply):
"""
Meter configuration statistics reply message
The switch responds with this message to a meter configuration
statistics request.
================ ======================================================
Attribute Description
================ ======================================================
body List of ``OFPMeterConfigStats`` instance
================ ======================================================
Example::
@set_ev_cls(ofp_event.EventOFPMeterConfigStatsReply, MAIN_DISPATCHER)
def meter_config_stats_reply_handler(self, ev):
configs = []
for stat in ev.msg.body:
configs.append('length=%d flags=0x%04x meter_id=0x%08x '
'bands=%s' %
(stat.length, stat.flags, stat.meter_id,
stat.bands))
self.logger.debug('MeterConfigStats: %s', configs)
"""
def __init__(self, datapath, type_=None, **kwargs):
super(OFPMeterConfigStatsReply, self).__init__(datapath, **kwargs)
class OFPMeterFeaturesStats(ofproto_parser.namedtuple('OFPMeterFeaturesStats',
('max_meter', 'band_types', 'capabilities',
'max_bands', 'max_color'))):
@classmethod
def parser(cls, buf, offset):
meter_features = struct.unpack_from(
ofproto.OFP_METER_FEATURES_PACK_STR, buf, offset)
stats = cls(*meter_features)
stats.length = ofproto.OFP_METER_FEATURES_SIZE
return stats
@_set_stats_type(ofproto.OFPMP_METER_FEATURES, OFPMeterFeaturesStats)
@_set_msg_type(ofproto.OFPT_MULTIPART_REQUEST)
class OFPMeterFeaturesStatsRequest(OFPMultipartRequest):
"""
Meter features statistics request message
The controller uses this message to query the set of features of the
metering subsystem.
================ ======================================================
Attribute Description
================ ======================================================
flags Zero or ``OFPMPF_REQ_MORE``
================ ======================================================
Example::
def send_meter_features_stats_request(self, datapath):
ofp_parser = datapath.ofproto_parser
req = ofp_parser.OFPMeterFeaturesStatsRequest(datapath, 0)
datapath.send_msg(req)
"""
def __init__(self, datapath, flags=0, type_=None):
super(OFPMeterFeaturesStatsRequest, self).__init__(datapath, flags)
@OFPMultipartReply.register_stats_type()
@_set_stats_type(ofproto.OFPMP_METER_FEATURES, OFPMeterFeaturesStats)
@_set_msg_type(ofproto.OFPT_MULTIPART_REPLY)
class OFPMeterFeaturesStatsReply(OFPMultipartReply):
"""
Meter features statistics reply message
The switch responds with this message to a meter features statistics
request.
================ ======================================================
Attribute Description
================ ======================================================
body List of ``OFPMeterFeaturesStats`` instance
================ ======================================================
Example::
@set_ev_cls(ofp_event.EventOFPMeterFeaturesStatsReply, MAIN_DISPATCHER)
def meter_features_stats_reply_handler(self, ev):
features = []
for stat in ev.msg.body:
features.append('max_meter=%d band_types=0x%08x '
'capabilities=0x%08x max_bands=%d '
'max_color=%d' %
(stat.max_meter, stat.band_types,
stat.capabilities, stat.max_bands,
stat.max_color))
self.logger.debug('MeterFeaturesStats: %s', configs)
"""
def __init__(self, datapath, type_=None, **kwargs):
super(OFPMeterFeaturesStatsReply, self).__init__(datapath, **kwargs)
class OFPTableFeaturesStats(StringifyMixin):
_TYPE = {
'utf-8': [
# OF spec is unclear about the encoding of name.
# we assumes UTF-8.
'name',
]
}
def __init__(self, table_id=None, name=None, metadata_match=None,
metadata_write=None, config=None, max_entries=None,
properties=None, length=None):
super(OFPTableFeaturesStats, self).__init__()
self.length = None
self.table_id = table_id
self.name = name
self.metadata_match = metadata_match
self.metadata_write = metadata_write
self.config = config
self.max_entries = max_entries
self.properties = properties
@classmethod
def parser(cls, buf, offset):
table_features = cls()
(table_features.length, table_features.table_id,
name, table_features.metadata_match,
table_features.metadata_write, table_features.config,
table_features.max_entries
) = struct.unpack_from(ofproto.OFP_TABLE_FEATURES_PACK_STR,
buf, offset)
table_features.name = name.rstrip('\0')
props = []
rest = buf[offset + ofproto.OFP_TABLE_FEATURES_SIZE:
offset + table_features.length]
while rest:
p, rest = OFPTableFeatureProp.parse(rest)
props.append(p)
table_features.properties = props
return table_features
def serialize(self):
# fixup
bin_props = bytearray()
for p in self.properties:
bin_props += p.serialize()
self.length = ofproto.OFP_TABLE_FEATURES_SIZE + len(bin_props)
buf = bytearray()
msg_pack_into(ofproto.OFP_TABLE_FEATURES_PACK_STR, buf, 0,
self.length, self.table_id, self.name,
self.metadata_match, self.metadata_write,
self.config, self.max_entries)
return buf + bin_props
class OFPTableFeatureProp(StringifyMixin):
_PACK_STR = '!HH' # type, length
_TYPES = {} # OFPTFPT_ -> class
def __init__(self, type_, length=None):
self.type = type_
self.length = length
@classmethod
def register_type(cls, type_):
def _register_type(subcls):
cls._TYPES[type_] = subcls
return subcls
return _register_type
@classmethod
def parse(cls, buf):
(type_, length,) = struct.unpack_from(cls._PACK_STR, buffer(buf), 0)
bin_prop = buf[struct.calcsize(cls._PACK_STR):length]
rest = buf[utils.round_up(length, 8):]
try:
subcls = cls._TYPES[type_]
except KeyError:
subcls = OFPTableFeaturePropUnknown
kwargs = subcls._parse_prop(bin_prop)
kwargs['type_'] = type_
kwargs['length'] = length
return subcls(**kwargs), rest
def serialize(self):
# fixup
bin_prop = self._serialize_prop()
self.length = struct.calcsize(self._PACK_STR) + len(bin_prop)
buf = bytearray()
msg_pack_into(self._PACK_STR, buf, 0, self.type, self.length)
pad_len = utils.round_up(self.length, 8) - self.length
return buf + bin_prop + pad_len * '\0'
class OFPTableFeaturePropUnknown(OFPTableFeatureProp):
def __init__(self, type_, length=None, data=None):
super(OFPTableFeaturePropUnknown, self).__init__(type_, length)
self.data = data
@classmethod
def _parse_prop(cls, buf):
return {'data': buf}
def _serialize_prop(self):
return self.data
# Implementation note: While OpenFlow 1.3.2 shares the same ofp_instruction
# for flow_mod and table_features, we have separate classes. We named this
# class to match with OpenFlow 1.4's name. (ofp_instruction_id)
class OFPInstructionId(StringifyMixin):
_PACK_STR = '!HH' # type, len
def __init__(self, type_, len_=None):
self.type = type_
self.len = len_
# XXX experimenter
@classmethod
def parse(cls, buf):
(type_, len_,) = struct.unpack_from(cls._PACK_STR, buffer(buf), 0)
rest = buf[len_:]
return cls(type_=type_, len_=len_), rest
def serialize(self):
# fixup
self.len = struct.calcsize(self._PACK_STR)
buf = bytearray()
msg_pack_into(self._PACK_STR, buf, 0, self.type, self.len)
return buf
@OFPTableFeatureProp.register_type(ofproto.OFPTFPT_INSTRUCTIONS)
@OFPTableFeatureProp.register_type(ofproto.OFPTFPT_INSTRUCTIONS_MISS)
class OFPTableFeaturePropInstructions(OFPTableFeatureProp):
def __init__(self, type_, instruction_ids=[], length=None):
super(OFPTableFeaturePropInstructions, self).__init__(type_, length)
self.instruction_ids = instruction_ids
@classmethod
def _parse_prop(cls, buf):
rest = buf
ids = []
while rest:
i, rest = OFPInstructionId.parse(rest)
ids.append(i)
return {
'instruction_ids': ids,
}
def _serialize_prop(self):
bin_ids = bytearray()
for i in self.instruction_ids:
bin_ids += i.serialize()
return bin_ids
@OFPTableFeatureProp.register_type(ofproto.OFPTFPT_NEXT_TABLES)
@OFPTableFeatureProp.register_type(ofproto.OFPTFPT_NEXT_TABLES_MISS)
class OFPTableFeaturePropNextTables(OFPTableFeatureProp):
_TABLE_ID_PACK_STR = '!B'
def __init__(self, type_, table_ids=[], length=None):
super(OFPTableFeaturePropNextTables, self).__init__(type_, length)
self.table_ids = table_ids
@classmethod
def _parse_prop(cls, buf):
rest = buf
ids = []
while rest:
(i,) = struct.unpack_from(cls._TABLE_ID_PACK_STR, buffer(rest), 0)
rest = rest[struct.calcsize(cls._TABLE_ID_PACK_STR):]
ids.append(i)
return {
'table_ids': ids,
}
def _serialize_prop(self):
bin_ids = bytearray()
for i in self.table_ids:
bin_id = bytearray()
msg_pack_into(self._TABLE_ID_PACK_STR, bin_id, 0, i)
bin_ids += bin_id
return bin_ids
# Implementation note: While OpenFlow 1.3.2 shares the same ofp_action_header
# for flow_mod and table_features, we have separate classes. We named this
# class to match with OpenFlow 1.4's name. (ofp_action_id)
class OFPActionId(StringifyMixin):
# XXX
# ofp_action_header should have trailing pad bytes.
# however, i guess it's a specification bug as:
# - the spec explicitly says non-experimenter actions are 4 bytes
# - linc/of_protocol doesn't use them
# - OpenFlow 1.4 changed to use a separate structure
_PACK_STR = '!HH' # type, len
def __init__(self, type_, len_=None):
self.type = type_
self.len = len_
# XXX experimenter
@classmethod
def parse(cls, buf):
(type_, len_,) = struct.unpack_from(cls._PACK_STR, buffer(buf), 0)
rest = buf[len_:]
return cls(type_=type_, len_=len_), rest
def serialize(self):
# fixup
self.len = struct.calcsize(self._PACK_STR)
buf = bytearray()
msg_pack_into(self._PACK_STR, buf, 0, self.type, self.len)
return buf
@OFPTableFeatureProp.register_type(ofproto.OFPTFPT_WRITE_ACTIONS)
@OFPTableFeatureProp.register_type(ofproto.OFPTFPT_WRITE_ACTIONS_MISS)
@OFPTableFeatureProp.register_type(ofproto.OFPTFPT_APPLY_ACTIONS)
@OFPTableFeatureProp.register_type(ofproto.OFPTFPT_APPLY_ACTIONS_MISS)
class OFPTableFeaturePropActions(OFPTableFeatureProp):
def __init__(self, type_, action_ids=[], length=None):
super(OFPTableFeaturePropActions, self).__init__(type_, length)
self.action_ids = action_ids
@classmethod
def _parse_prop(cls, buf):
rest = buf
ids = []
while rest:
i, rest = OFPActionId.parse(rest)
ids.append(i)
return {
'action_ids': ids,
}
def _serialize_prop(self):
bin_ids = bytearray()
for i in self.action_ids:
bin_ids += i.serialize()
return bin_ids
# Implementation note: OFPOxmId is specific to this implementation.
# It does not have a corresponding structure in the specification.
# (the specification uses plain uint32_t for non-experimenter OXMs
# and uint64_t for experimenter OXMs.)
#
# i have taken a look at some of software switch implementations
# but they all look broken or incomplete. according to the spec,
# oxm_hasmask should be 1 if a switch supports masking for the type.
# the right value for oxm_length is not clear from the spec.
# update: OpenFlow 1.3.3 "clarified" that oxm_length here is the payload
# length. it's still unclear if it should be doubled for hasmask or not,
# though.
# ofsoftswitch13
# oxm_hasmask always 0
# oxm_length same as ofp_match etc (as without mask)
# linc/of_protocol
# oxm_hasmask always 0
# oxm_length always 0
# ovs:
# seems in flux as of writing this [20141003]
class OFPOxmId(StringifyMixin):
_PACK_STR = '!I' # oxm header
_EXPERIMENTER_ID_PACK_STR = '!I'
_TYPE = {
'ascii': [
'type',
],
}
def __init__(self, type_, hasmask=False, length=None):
self.type = type_
self.hasmask = hasmask
self.length = length
@classmethod
def parse(cls, buf):
(oxm,) = struct.unpack_from(cls._PACK_STR, buffer(buf), 0)
# oxm (32 bit) == class (16) | field (7) | hasmask (1) | length (8)
# in case of experimenter OXMs, another 32 bit value
# (experimenter id) follows.
(type_, _v) = ofproto.oxm_to_user(oxm >> (1 + 8), None, None)
rest = buf[struct.calcsize(cls._PACK_STR):]
hasmask = ofproto.oxm_tlv_header_extract_hasmask(oxm)
length = oxm & 0xff # XXX see the comment on OFPOxmId
class_ = oxm >> (7 + 1 + 8)
if class_ == ofproto.OFPXMC_EXPERIMENTER:
(exp_id,) = struct.unpack_from(cls._EXPERIMENTER_ID_PACK_STR,
buffer(rest), 0)
rest = rest[struct.calcsize(cls._EXPERIMENTER_ID_PACK_STR):]
subcls = OFPExperimenterOxmId
return subcls(type_=type_, exp_id=exp_id, hasmask=hasmask,
length=length), rest
else:
return cls(type_=type_, hasmask=hasmask, length=length), rest
def serialize(self):
# fixup
self.length = 0 # XXX see the comment on OFPOxmId
(n, _v, _m) = ofproto.oxm_from_user(self.type, None)
oxm = (n << (1 + 8)) | (self.hasmask << 8) | self.length
buf = bytearray()
msg_pack_into(self._PACK_STR, buf, 0, oxm)
assert n >> 7 != ofproto.OFPXMC_EXPERIMENTER
return buf
class OFPExperimenterOxmId(OFPOxmId):
def __init__(self, type_, exp_id, hasmask=False, length=None):
super(OFPExperimenterOxmId, self).__init__(type_=type_,
hasmask=hasmask,
length=length)
self.exp_id = exp_id
def serialize(self):
buf = super(OFPExperimenterOxmId, self).serialize()
msg_pack_into(self._EXPERIMENTER_ID_PACK_STR, buf,
struct.calcsize(self._PACK_STR), self.exp_id)
@OFPTableFeatureProp.register_type(ofproto.OFPTFPT_MATCH)
@OFPTableFeatureProp.register_type(ofproto.OFPTFPT_WILDCARDS)
@OFPTableFeatureProp.register_type(ofproto.OFPTFPT_WRITE_SETFIELD)
@OFPTableFeatureProp.register_type(ofproto.OFPTFPT_WRITE_SETFIELD_MISS)
@OFPTableFeatureProp.register_type(ofproto.OFPTFPT_APPLY_SETFIELD)
@OFPTableFeatureProp.register_type(ofproto.OFPTFPT_APPLY_SETFIELD_MISS)
class OFPTableFeaturePropOxm(OFPTableFeatureProp):
def __init__(self, type_, oxm_ids=[], length=None):
super(OFPTableFeaturePropOxm, self).__init__(type_, length)
self.oxm_ids = oxm_ids
@classmethod
def _parse_prop(cls, buf):
rest = buf
ids = []
while rest:
i, rest = OFPOxmId.parse(rest)
ids.append(i)
return {
'oxm_ids': ids,
}
def _serialize_prop(self):
bin_ids = bytearray()
for i in self.oxm_ids:
bin_ids += i.serialize()
return bin_ids
@OFPTableFeatureProp.register_type(ofproto.OFPTFPT_EXPERIMENTER)
@OFPTableFeatureProp.register_type(ofproto.OFPTFPT_EXPERIMENTER_MISS)
class OFPTableFeaturePropExperimenter(OFPTableFeatureProp):
_DATA_ELEMENT_PACK_STR = '!I'
_BODY_PACK_STR = '!II'
def __init__(self, type_, experimenter=None, exp_type=None,
data=None, length=None):
self.type = type_
self.length = length
self.experimenter = experimenter
self.exp_type = exp_type
self.data = data
@classmethod
def _parse_prop(cls, buf):
(experimenter, exp_type) = struct.unpack_from(cls._BODY_PACK_STR,
buf, 0)
# Parse trailing data, a list of 4-byte words
length = len(buf)
data = []
pack_size = struct.calcsize(cls._DATA_ELEMENT_PACK_STR)
offset = struct.calcsize(cls._BODY_PACK_STR)
while offset < length:
(word,) = struct.unpack_from(cls._DATA_ELEMENT_PACK_STR,
buf, offset)
data.append(word)
offset += pack_size
return {
'experimenter': experimenter,
'exp_type': exp_type,
'data': data,
}
def _serialize_prop(self):
# experimenter, exp_type
buf = bytearray()
msg_pack_into(self._BODY_PACK_STR, buf, 0, self.experimenter,
self.exp_type)
# data
if len(self.data):
msg_pack_into('!%dI' % len(self.data), buf, len(buf), *self.data)
return buf
@_set_stats_type(ofproto.OFPMP_TABLE_FEATURES, OFPTableFeaturesStats)
@_set_msg_type(ofproto.OFPT_MULTIPART_REQUEST)
class OFPTableFeaturesStatsRequest(OFPMultipartRequest):
"""
Table features statistics request message
The controller uses this message to query table features.
================ ======================================================
Attribute Description
================ ======================================================
body List of ``OFPTableFeaturesStats`` instances.
The default is [].
================ ======================================================
"""
def __init__(self, datapath, flags=0,
body=[],
type_=None):
super(OFPTableFeaturesStatsRequest, self).__init__(datapath, flags)
self.body = body
def _serialize_stats_body(self):
bin_body = bytearray()
for p in self.body:
bin_body += p.serialize()
self.buf += bin_body
@OFPMultipartReply.register_stats_type()
@_set_stats_type(ofproto.OFPMP_TABLE_FEATURES, OFPTableFeaturesStats)
@_set_msg_type(ofproto.OFPT_MULTIPART_REPLY)
class OFPTableFeaturesStatsReply(OFPMultipartReply):
"""
Table features statistics reply message
The switch responds with this message to a table features statistics
request.
================ ======================================================
Attribute Description
================ ======================================================
body List of ``OFPTableFeaturesStats`` instance
================ ======================================================
"""
def __init__(self, datapath, type_=None, **kwargs):
super(OFPTableFeaturesStatsReply, self).__init__(datapath, **kwargs)
@_set_stats_type(ofproto.OFPMP_PORT_DESC, OFPPort)
@_set_msg_type(ofproto.OFPT_MULTIPART_REQUEST)
class OFPPortDescStatsRequest(OFPMultipartRequest):
"""
Port description request message
The controller uses this message to query description of all the ports.
================ ======================================================
Attribute Description
================ ======================================================
flags Zero or ``OFPMPF_REQ_MORE``
================ ======================================================
Example::
def send_port_desc_stats_request(self, datapath):
ofp_parser = datapath.ofproto_parser
req = ofp_parser.OFPPortDescStatsRequest(datapath, 0)
datapath.send_msg(req)
"""
def __init__(self, datapath, flags=0, type_=None):
super(OFPPortDescStatsRequest, self).__init__(datapath, flags)
@OFPMultipartReply.register_stats_type()
@_set_stats_type(ofproto.OFPMP_PORT_DESC, OFPPort)
@_set_msg_type(ofproto.OFPT_MULTIPART_REPLY)
class OFPPortDescStatsReply(OFPMultipartReply):
"""
Port description reply message
The switch responds with this message to a port description request.
================ ======================================================
Attribute Description
================ ======================================================
body List of ``OFPPortDescStats`` instance
================ ======================================================
Example::
@set_ev_cls(ofp_event.EventOFPPortDescStatsReply, MAIN_DISPATCHER)
def port_desc_stats_reply_handler(self, ev):
ports = []
for p in ev.msg.body:
ports.append('port_no=%d hw_addr=%s name=%s config=0x%08x '
'state=0x%08x curr=0x%08x advertised=0x%08x '
'supported=0x%08x peer=0x%08x curr_speed=%d '
'max_speed=%d' %
(p.port_no, p.hw_addr,
p.name, p.config,
p.state, p.curr, p.advertised,
p.supported, p.peer, p.curr_speed,
p.max_speed))
self.logger.debug('OFPPortDescStatsReply received: %s', ports)
"""
def __init__(self, datapath, type_=None, **kwargs):
super(OFPPortDescStatsReply, self).__init__(datapath, **kwargs)
class OFPExperimenterMultipart(ofproto_parser.namedtuple(
'OFPExperimenterMultipart',
('experimenter', 'exp_type', 'data'))):
"""
The body of OFPExperimenterStatsReply multipart messages.
================ ======================================================
Attribute Description
================ ======================================================
experimenter Experimenter ID
exp_type Experimenter defined
data Experimenter defined additional data
================ ======================================================
"""
@classmethod
def parser(cls, buf, offset):
args = struct.unpack_from(
ofproto.OFP_EXPERIMENTER_MULTIPART_HEADER_PACK_STR, buf,
offset)
args = list(args)
args.append(buf[offset +
ofproto.OFP_EXPERIMENTER_MULTIPART_HEADER_SIZE:])
stats = cls(*args)
stats.length = ofproto.OFP_METER_FEATURES_SIZE
return stats
def serialize(self):
buf = bytearray()
msg_pack_into(ofproto.OFP_EXPERIMENTER_MULTIPART_HEADER_PACK_STR,
buf, 0,
self.experimenter, self.exp_type)
return buf + self.data
class OFPExperimenterStatsRequestBase(OFPMultipartRequest):
def __init__(self, datapath, flags,
experimenter, exp_type,
type_=None):
super(OFPExperimenterStatsRequestBase, self).__init__(datapath, flags)
self.experimenter = experimenter
self.exp_type = exp_type
@_set_stats_type(ofproto.OFPMP_EXPERIMENTER, OFPExperimenterMultipart)
@_set_msg_type(ofproto.OFPT_MULTIPART_REQUEST)
class OFPExperimenterStatsRequest(OFPExperimenterStatsRequestBase):
"""
Experimenter multipart request message
================ ======================================================
Attribute Description
================ ======================================================
flags Zero or ``OFPMPF_REQ_MORE``
experimenter Experimenter ID
exp_type Experimenter defined
data Experimenter defined additional data
================ ======================================================
"""
def __init__(self, datapath, flags,
experimenter, exp_type, data,
type_=None):
super(OFPExperimenterStatsRequest, self).__init__(datapath, flags,
experimenter,
exp_type, type_)
self.data = data
def _serialize_stats_body(self):
body = OFPExperimenterMultipart(experimenter=self.experimenter,
exp_type=self.exp_type,
data=self.data)
self.buf += body.serialize()
# NOTE: we use OFPMatch while on-wire does not ofp_match.
# (OF1.4 version uses ofp_match.)
class ONFFlowMonitorRequest(StringifyMixin):
def __init__(self, id_, flags,
match=OFPMatch(),
out_port=ofproto.OFPP_ANY,
table_id=ofproto.OFPTT_ALL,
match_len=None):
self.id = id_
self.flags = flags
self.match_len = match_len
self.out_port = out_port
self.table_id = table_id
self.match = match
def serialize(self):
# fixup
match = self.match
bin_match = bytearray()
ofp_match_len = match.serialize(bin_match, 0)
assert len(bin_match) == ofp_match_len
match_len = match.length
match_hdr_len = ofproto.OFP_MATCH_SIZE - 4 # exclude pad[4]
# strip ofp_match header and trailing padding
bin_match = bytes(bin_match)[match_hdr_len:match_len]
self.match_len = len(bin_match)
buf = bytearray()
msg_pack_into(ofproto.ONF_FLOW_MONITOR_REQUEST_PACK_STR,
buf, 0,
self.id, self.flags, self.match_len,
self.out_port, self.table_id)
buf += bin_match
pad_len = utils.round_up(self.match_len, 8) - self.match_len
buf += pad_len * '\0'
return buf
@_set_stats_type(ofproto.OFPMP_EXPERIMENTER, OFPExperimenterMultipart)
@_set_msg_type(ofproto.OFPT_MULTIPART_REQUEST)
class ONFFlowMonitorStatsRequest(OFPExperimenterStatsRequestBase):
"""
================ ======================================================
Attribute Description
================ ======================================================
flags Zero or ``OFPMPF_REQ_MORE``
body List of ONFFlowMonitorRequest instances
================ ======================================================
"""
def __init__(self, datapath, flags, body=[],
type_=None, experimenter=None, exp_type=None):
super(ONFFlowMonitorStatsRequest,
self).__init__(datapath, flags,
experimenter=ofproto_common.ONF_EXPERIMENTER_ID,
exp_type=ofproto.ONFMP_FLOW_MONITOR)
self.body = body
def _serialize_stats_body(self):
data = bytearray()
for i in self.body:
data += i.serialize()
body = OFPExperimenterMultipart(experimenter=self.experimenter,
exp_type=self.exp_type,
data=data)
self.buf += body.serialize()
@OFPMultipartReply.register_stats_type(body_single_struct=True)
@_set_stats_type(ofproto.OFPMP_EXPERIMENTER, OFPExperimenterMultipart)
@_set_msg_type(ofproto.OFPT_MULTIPART_REPLY)
class OFPExperimenterStatsReply(OFPMultipartReply):
"""
Experimenter multipart reply message
================ ======================================================
Attribute Description
================ ======================================================
body An ``OFPExperimenterMultipart`` instance
================ ======================================================
"""
def __init__(self, datapath, type_=None, **kwargs):
super(OFPExperimenterStatsReply, self).__init__(datapath, **kwargs)
@_set_msg_type(ofproto.OFPT_BARRIER_REQUEST)
class OFPBarrierRequest(MsgBase):
"""
Barrier request message
The controller sends this message to ensure message dependencies have
been met or receive notifications for completed operations.
Example::
def send_barrier_request(self, datapath):
ofp_parser = datapath.ofproto_parser
req = ofp_parser.OFPBarrierRequest(datapath)
datapath.send_msg(req)
"""
def __init__(self, datapath):
super(OFPBarrierRequest, self).__init__(datapath)
@_register_parser
@_set_msg_type(ofproto.OFPT_BARRIER_REPLY)
class OFPBarrierReply(MsgBase):
"""
Barrier reply message
The switch responds with this message to a barrier request.
Example::
@set_ev_cls(ofp_event.EventOFPBarrierReply, MAIN_DISPATCHER)
def barrier_reply_handler(self, ev):
self.logger.debug('OFPBarrierReply received')
"""
def __init__(self, datapath):
super(OFPBarrierReply, self).__init__(datapath)
@_set_msg_type(ofproto.OFPT_QUEUE_GET_CONFIG_REQUEST)
class OFPQueueGetConfigRequest(MsgBase):
"""
Queue configuration request message
================ ======================================================
Attribute Description
================ ======================================================
port Port to be queried (OFPP_ANY to all configured queues)
================ ======================================================
Example::
def send_queue_get_config_request(self, datapath):
ofp = datapath.ofproto
ofp_parser = datapath.ofproto_parser
req = ofp_parser.OFPQueueGetConfigRequest(datapath, ofp.OFPP_ANY)
datapath.send_msg(req)
"""
def __init__(self, datapath, port):
super(OFPQueueGetConfigRequest, self).__init__(datapath)
self.port = port
def _serialize_body(self):
msg_pack_into(ofproto.OFP_QUEUE_GET_CONFIG_REQUEST_PACK_STR,
self.buf, ofproto.OFP_HEADER_SIZE, self.port)
class OFPQueuePropHeader(StringifyMixin):
def __init__(self, property_, len_):
self.property = property_
self.len = len_
def serialize(self, buf, offset):
msg_pack_into(ofproto.OFP_QUEUE_PROP_HEADER_PACK_STR,
buf, offset, self.property, self.len)
class OFPQueueProp(OFPQueuePropHeader):
_QUEUE_PROP_PROPERTIES = {}
@staticmethod
def register_queue_property(property_, len_):
def _register_queue_property(cls):
cls.cls_property = property_
cls.cls_len = len_
OFPQueueProp._QUEUE_PROP_PROPERTIES[cls.cls_property] = cls
return cls
return _register_queue_property
def __init__(self):
cls = self.__class__
super(OFPQueueProp, self).__init__(cls.cls_property,
cls.cls_len)
@classmethod
def parser(cls, buf, offset):
(property_, len_) = struct.unpack_from(
ofproto.OFP_QUEUE_PROP_HEADER_PACK_STR,
buf, offset)
cls_ = cls._QUEUE_PROP_PROPERTIES.get(property_)
offset += ofproto.OFP_QUEUE_PROP_HEADER_SIZE
return cls_.parser(buf, offset)
@OFPQueueProp.register_queue_property(
ofproto.OFPQT_MIN_RATE,
ofproto.OFP_QUEUE_PROP_MIN_RATE_SIZE)
class OFPQueuePropMinRate(OFPQueueProp):
def __init__(self, rate, property_=None, len_=None):
super(OFPQueuePropMinRate, self).__init__()
self.rate = rate
@classmethod
def parser(cls, buf, offset):
(rate,) = struct.unpack_from(
ofproto.OFP_QUEUE_PROP_MIN_RATE_PACK_STR, buf, offset)
return cls(rate)
@OFPQueueProp.register_queue_property(
ofproto.OFPQT_MAX_RATE,
ofproto.OFP_QUEUE_PROP_MAX_RATE_SIZE)
class OFPQueuePropMaxRate(OFPQueueProp):
def __init__(self, rate, property_=None, len_=None):
super(OFPQueuePropMaxRate, self).__init__()
self.rate = rate
@classmethod
def parser(cls, buf, offset):
(rate,) = struct.unpack_from(
ofproto.OFP_QUEUE_PROP_MAX_RATE_PACK_STR, buf, offset)
return cls(rate)
# TODO: add ofp_queue_prop_experimenter
class OFPPacketQueue(StringifyMixin):
def __init__(self, queue_id, port, properties, len_=None):
super(OFPPacketQueue, self).__init__()
self.queue_id = queue_id
self.port = port
self.len = len_
self.properties = properties
@classmethod
def parser(cls, buf, offset):
(queue_id, port, len_) = struct.unpack_from(
ofproto.OFP_PACKET_QUEUE_PACK_STR, buf, offset)
length = ofproto.OFP_PACKET_QUEUE_SIZE
offset += ofproto.OFP_PACKET_QUEUE_SIZE
properties = []
while length < len_:
queue_prop = OFPQueueProp.parser(buf, offset)
properties.append(queue_prop)
offset += queue_prop.len
length += queue_prop.len
o = cls(queue_id, port, properties)
o.len = len_
return o
@_register_parser
@_set_msg_type(ofproto.OFPT_QUEUE_GET_CONFIG_REPLY)
class OFPQueueGetConfigReply(MsgBase):
"""
Queue configuration reply message
The switch responds with this message to a queue configuration request.
================ ======================================================
Attribute Description
================ ======================================================
queues list of ``OFPPacketQueue`` instance
port Port which was queried
================ ======================================================
Example::
@set_ev_cls(ofp_event.EventOFPQueueGetConfigReply, MAIN_DISPATCHER)
def queue_get_config_reply_handler(self, ev):
msg = ev.msg
self.logger.debug('OFPQueueGetConfigReply received: '
'port=%s queues=%s',
msg.port, msg.queues)
"""
def __init__(self, datapath, queues=None, port=None):
super(OFPQueueGetConfigReply, self).__init__(datapath)
self.queues = queues
self.port = port
@classmethod
def parser(cls, datapath, version, msg_type, msg_len, xid, buf):
msg = super(OFPQueueGetConfigReply, cls).parser(datapath, version,
msg_type,
msg_len, xid, buf)
(msg.port,) = struct.unpack_from(
ofproto.OFP_QUEUE_GET_CONFIG_REPLY_PACK_STR, msg.buf,
ofproto.OFP_HEADER_SIZE)
msg.queues = []
offset = ofproto.OFP_QUEUE_GET_CONFIG_REPLY_SIZE
while offset < msg_len:
queue = OFPPacketQueue.parser(msg.buf, offset)
msg.queues.append(queue)
offset += queue.len
return msg
@_set_msg_type(ofproto.OFPT_ROLE_REQUEST)
class OFPRoleRequest(MsgBase):
"""
Role request message
The controller uses this message to change its role.
================ ======================================================
Attribute Description
================ ======================================================
role One of the following values.
| OFPCR_ROLE_NOCHANGE
| OFPCR_ROLE_EQUAL
| OFPCR_ROLE_MASTER
| OFPCR_ROLE_SLAVE
generation_id Master Election Generation ID
================ ======================================================
Example::
def send_role_request(self, datapath):
ofp = datapath.ofproto
ofp_parser = datapath.ofproto_parser
req = ofp_parser.OFPRoleRequest(datapath, ofp.OFPCR_ROLE_EQUAL, 0)
datapath.send_msg(req)
"""
def __init__(self, datapath, role=None, generation_id=None):
super(OFPRoleRequest, self).__init__(datapath)
self.role = role
self.generation_id = generation_id
def _serialize_body(self):
assert self.role is not None
assert self.generation_id is not None
msg_pack_into(ofproto.OFP_ROLE_REQUEST_PACK_STR,
self.buf, ofproto.OFP_HEADER_SIZE,
self.role, self.generation_id)
@_register_parser
@_set_msg_type(ofproto.OFPT_ROLE_REPLY)
class OFPRoleReply(MsgBase):
"""
Role reply message
The switch responds with this message to a role request.
================ ======================================================
Attribute Description
================ ======================================================
role One of the following values.
| OFPCR_ROLE_NOCHANGE
| OFPCR_ROLE_EQUAL
| OFPCR_ROLE_MASTER
| OFPCR_ROLE_SLAVE
generation_id Master Election Generation ID
================ ======================================================
Example::
@set_ev_cls(ofp_event.EventOFPRoleReply, MAIN_DISPATCHER)
def role_reply_handler(self, ev):
msg = ev.msg
ofp = dp.ofproto
if msg.role == ofp.OFPCR_ROLE_NOCHANGE:
role = 'NOCHANGE'
elif msg.role == ofp.OFPCR_ROLE_EQUAL:
role = 'EQUAL'
elif msg.role == ofp.OFPCR_ROLE_MASTER:
role = 'MASTER'
elif msg.role == ofp.OFPCR_ROLE_SLAVE:
role = 'SLAVE'
else:
role = 'unknown'
self.logger.debug('OFPRoleReply received: '
'role=%s generation_id=%d',
role, msg.generation_id)
"""
def __init__(self, datapath, role=None, generation_id=None):
super(OFPRoleReply, self).__init__(datapath)
self.role = role
self.generation_id = generation_id
@classmethod
def parser(cls, datapath, version, msg_type, msg_len, xid, buf):
msg = super(OFPRoleReply, cls).parser(datapath, version,
msg_type, msg_len, xid,
buf)
(msg.role, msg.generation_id) = struct.unpack_from(
ofproto.OFP_ROLE_REQUEST_PACK_STR, msg.buf,
ofproto.OFP_HEADER_SIZE)
return msg
@_set_msg_type(ofproto.OFPT_GET_ASYNC_REQUEST)
class OFPGetAsyncRequest(MsgBase):
"""
Get asynchronous configuration request message
The controller uses this message to query the asynchronous message.
Example::
def send_get_async_request(self, datapath):
ofp_parser = datapath.ofproto_parser
req = ofp_parser.OFPGetAsyncRequest(datapath)
datapath.send_msg(req)
"""
def __init__(self, datapath):
super(OFPGetAsyncRequest, self).__init__(datapath)
@_register_parser
@_set_msg_type(ofproto.OFPT_GET_ASYNC_REPLY)
class OFPGetAsyncReply(MsgBase):
"""
Get asynchronous configuration reply message
The switch responds with this message to a get asynchronous configuration
request.
================== ====================================================
Attribute Description
================== ====================================================
packet_in_mask 2-element array: element 0, when the controller has a
OFPCR_ROLE_EQUAL or OFPCR_ROLE_MASTER role. element 1,
OFPCR_ROLE_SLAVE role controller.
Bitmasks of following values.
| OFPR_NO_MATCH
| OFPR_ACTION
| OFPR_INVALID_TTL
port_status_mask 2-element array.
Bitmasks of following values.
| OFPPR_ADD
| OFPPR_DELETE
| OFPPR_MODIFY
flow_removed_mask 2-element array.
Bitmasks of following values.
| OFPRR_IDLE_TIMEOUT
| OFPRR_HARD_TIMEOUT
| OFPRR_DELETE
| OFPRR_GROUP_DELETE
================== ====================================================
Example::
@set_ev_cls(ofp_event.EventOFPGetAsyncReply, MAIN_DISPATCHER)
def get_async_reply_handler(self, ev):
msg = ev.msg
self.logger.debug('OFPGetAsyncReply received: '
'packet_in_mask=0x%08x:0x%08x '
'port_status_mask=0x%08x:0x%08x '
'flow_removed_mask=0x%08x:0x%08x',
msg.packet_in_mask[0],
msg.packet_in_mask[1],
msg.port_status_mask[0],
msg.port_status_mask[1],
msg.flow_removed_mask[0],
msg.flow_removed_mask[1])
"""
def __init__(self, datapath, packet_in_mask=None, port_status_mask=None,
flow_removed_mask=None):
super(OFPGetAsyncReply, self).__init__(datapath)
self.packet_in_mask = packet_in_mask
self.port_status_mask = port_status_mask
self.flow_removed_mask = flow_removed_mask
@classmethod
def parser(cls, datapath, version, msg_type, msg_len, xid, buf):
msg = super(OFPGetAsyncReply, cls).parser(datapath, version,
msg_type, msg_len,
xid, buf)
(packet_in_mask_m, packet_in_mask_s,
port_status_mask_m, port_status_mask_s,
flow_removed_mask_m, flow_removed_mask_s) = struct.unpack_from(
ofproto.OFP_ASYNC_CONFIG_PACK_STR, msg.buf,
ofproto.OFP_HEADER_SIZE)
msg.packet_in_mask = [packet_in_mask_m, packet_in_mask_s]
msg.port_status_mask = [port_status_mask_m, port_status_mask_s]
msg.flow_removed_mask = [flow_removed_mask_m, flow_removed_mask_s]
return msg
@_set_msg_type(ofproto.OFPT_SET_ASYNC)
class OFPSetAsync(MsgBase):
"""
Set asynchronous configuration message
The controller sends this message to set the asynchronous messages that
it wants to receive on a given OpneFlow channel.
================== ====================================================
Attribute Description
================== ====================================================
packet_in_mask 2-element array: element 0, when the controller has a
OFPCR_ROLE_EQUAL or OFPCR_ROLE_MASTER role. element 1,
OFPCR_ROLE_SLAVE role controller.
Bitmasks of following values.
| OFPR_NO_MATCH
| OFPR_ACTION
| OFPR_INVALID_TTL
port_status_mask 2-element array.
Bitmasks of following values.
| OFPPR_ADD
| OFPPR_DELETE
| OFPPR_MODIFY
flow_removed_mask 2-element array.
Bitmasks of following values.
| OFPRR_IDLE_TIMEOUT
| OFPRR_HARD_TIMEOUT
| OFPRR_DELETE
| OFPRR_GROUP_DELETE
================== ====================================================
Example::
def send_set_async(self, datapath):
ofp = datapath.ofproto
ofp_parser = datapath.ofproto_parser
packet_in_mask = ofp.OFPR_ACTION | ofp.OFPR_INVALID_TTL
port_status_mask = (ofp.OFPPR_ADD | ofp.OFPPR_DELETE |
ofp.OFPPR_MODIFY)
flow_removed_mask = (ofp.OFPRR_IDLE_TIMEOUT |
ofp.OFPRR_HARD_TIMEOUT |
ofp.OFPRR_DELETE)
req = ofp_parser.OFPSetAsync(datapath,
[packet_in_mask, 0],
[port_status_mask, 0],
[flow_removed_mask, 0])
datapath.send_msg(req)
"""
def __init__(self, datapath,
packet_in_mask, port_status_mask, flow_removed_mask):
super(OFPSetAsync, self).__init__(datapath)
self.packet_in_mask = packet_in_mask
self.port_status_mask = port_status_mask
self.flow_removed_mask = flow_removed_mask
def _serialize_body(self):
msg_pack_into(ofproto.OFP_ASYNC_CONFIG_PACK_STR, self.buf,
ofproto.OFP_HEADER_SIZE,
self.packet_in_mask[0], self.packet_in_mask[1],
self.port_status_mask[0], self.port_status_mask[1],
self.flow_removed_mask[0], self.flow_removed_mask[1])
import nx_actions
nx_actions.generate(
'ryu.ofproto.ofproto_v1_3',
'ryu.ofproto.ofproto_v1_3_parser'
)
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