19c205b897
Signed-off-by: HIYAMA Manabu <hiyama.manabu@po.ntts.co.jp> Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
50 lines
1.6 KiB
Python
50 lines
1.6 KiB
Python
# Copyright (C) 2012 Nippon Telegraph and Telephone Corporation.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import struct
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from . import packet_base
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from . import arp
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from . import ipv4
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from ryu.ofproto import ether
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from ryu.ofproto.ofproto_parser import msg_pack_into
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class vlan(packet_base.PacketBase):
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_PACK_STR = "!HH"
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_MIN_LEN = struct.calcsize(_PACK_STR)
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def __init__(self, pcp, cfi, vid, ethertype):
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super(vlan, self).__init__()
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self.pcp = pcp
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self.cfi = cfi
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self.vid = vid
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self.ethertype = ethertype
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self.length = vlan._MIN_LEN
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@classmethod
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def parser(cls, buf):
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tci, ethertype = struct.unpack_from(cls._PACK_STR, buf)
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pcp = tci >> 13
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cfi = (tci >> 12) & 1
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vid = tci & ((1 << 12) - 1)
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return cls(pcp, cfi, vid, ethertype), vlan.get_packet_type(ethertype)
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def serialize(self, payload, prev):
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tci = self.pcp << 13 | self.cfi << 12 | self.vid
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return struct.pack(vlan._PACK_STR, tci, self.ethertype)
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vlan.register_packet_type(arp.arp, ether.ETH_TYPE_ARP)
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vlan.register_packet_type(ipv4.ipv4, ether.ETH_TYPE_IP)
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