Signed-off-by: FUJITA Tomonori <[email protected]> --- ryu/lib/packet/ethernet.py | 2 + ryu/lib/packet/mpls.py | 51 ++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 53 insertions(+), 0 deletions(-) create mode 100644 ryu/lib/packet/mpls.py
diff --git a/ryu/lib/packet/ethernet.py b/ryu/lib/packet/ethernet.py index de03456..f266ade 100644 --- a/ryu/lib/packet/ethernet.py +++ b/ryu/lib/packet/ethernet.py @@ -16,6 +16,7 @@ import struct from . import packet_base from . import vlan +from . import mpls from ryu.ofproto import ether @@ -43,3 +44,4 @@ class ethernet(packet_base.PacketBase): # copy vlan _TYPES ethernet._TYPES = vlan.vlan._TYPES ethernet.register_packet_type(vlan.vlan, ether.ETH_TYPE_8021Q) +ethernet.register_packet_type(mpls.mpls, ether.ETH_TYPE_MPLS) diff --git a/ryu/lib/packet/mpls.py b/ryu/lib/packet/mpls.py new file mode 100644 index 0000000..3dc42f6 --- /dev/null +++ b/ryu/lib/packet/mpls.py @@ -0,0 +1,51 @@ +# Copyright (C) 2012 Nippon Telegraph and Telephone Corporation. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or +# implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +import struct +import socket +from . import packet_base +from . import packet_utils +from . import ipv4 +from ryu.ofproto import ether + + +class mpls(packet_base.PacketBase): + _PACK_STR = '!I' + _MIN_LEN = struct.calcsize(_PACK_STR) + + def __init__(self, label, exp, bsb, ttl): + super(mpls, self).__init__() + self.label = label + self.exp = exp + self.bsb = bsb + self.ttl = ttl + self.length = mpls._MIN_LEN + + @classmethod + def parser(cls, buf): + (label,) = struct.unpack_from(cls._PACK_STR, buf) + ttl = label & 0xff + bsb = (label >> 8) & 1 + exp = (label >> 9) & 7 + label = label >> 12 + msg = cls(label, exp, bsb, ttl) + if bsb: + return msg, ipv4.ipv4 + else: + return msg, mpls + + def serialize(self, payload, prev): + val = self.label << 12 | self.exp << 9 | self.bsb << 8 | self.ttl + return struct.pack(mpls._PACK_STR, val) -- 1.7.4.4 ------------------------------------------------------------------------------ Don't let slow site performance ruin your business. Deploy New Relic APM Deploy New Relic app performance management and know exactly what is happening inside your Ruby, Python, PHP, Java, and .NET app Try New Relic at no cost today and get our sweet Data Nerd shirt too! http://p.sf.net/sfu/newrelic-dev2dev _______________________________________________ Ryu-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/ryu-devel
