src/python/loxi/of10/action.py

#
# Copyright 2012, 2013, Big Switch Networks, Inc.
#
# 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.

# Automatically generated by LOXI from template action.py
# Do not modify

import struct
import const
import util
import loxi

def unpack_list(buf):
    if len(buf) % 8 != 0: raise loxi.ProtocolError("action list length not a multiple of 8")
    actions = []
    offset = 0
    while offset < len(buf):
        type, length = struct.unpack_from("!HH", buf, offset)
        if length == 0: raise loxi.ProtocolError("action length is 0")
        if length % 8 != 0: raise loxi.ProtocolError("action length not a multiple of 8")
        if offset + length > len(buf): raise loxi.ProtocolError("action length overruns list length")
        parser = parsers.get(type)
        if not parser: raise loxi.ProtocolError("unknown action type %d" % type)
        actions.append(parser(buffer(buf, offset, length)))
        offset += length
    return actions

class Action(object):
    type = None # override in subclass
    pass

class bsn_mirror(Action):
    type = const.OFPAT_VENDOR
    experimenter = 0x5c16c7
    subtype = 1

    def __init__(self, dest_port=None, vlan_tag=None, copy_stage=None, pad=None):
        if dest_port != None:
            self.dest_port = dest_port
        else:
            self.dest_port = 0
        if vlan_tag != None:
            self.vlan_tag = vlan_tag
        else:
            self.vlan_tag = 0
        if copy_stage != None:
            self.copy_stage = copy_stage
        else:
            self.copy_stage = 0
        if pad != None:
            self.pad = pad
        else:
            self.pad = [0,0,0]

    def pack(self):
        packed = []
        packed.append(struct.pack("!H", self.type))
        packed.append(struct.pack("!H", 0)) # placeholder for len at index 1
        packed.append(struct.pack("!L", self.experimenter))
        packed.append(struct.pack("!L", self.subtype))
        packed.append(struct.pack("!L", self.dest_port))
        packed.append(struct.pack("!L", self.vlan_tag))
        packed.append(struct.pack("!B", self.copy_stage))
        packed.append(struct.pack("!3B", *self.pad))
        length = sum([len(x) for x in packed])
        packed[1] = struct.pack("!H", length)
        return ''.join(packed)

    @staticmethod
    def unpack(buf):
        obj = bsn_mirror()
        type = struct.unpack_from('!H', buf, 0)[0]
        assert(type == const.OFPAT_VENDOR)
        _length = struct.unpack_from('!H', buf, 2)[0]
        assert(_length == len(buf))
        if _length != 24: raise loxi.ProtocolError("bsn_mirror length is %d, should be 24" % _length)
        experimenter = struct.unpack_from('!L', buf, 4)[0]
        assert(experimenter == 0x5c16c7)
        subtype = struct.unpack_from('!L', buf, 8)[0]
        assert(subtype == 1)
        obj.dest_port = struct.unpack_from('!L', buf, 12)[0]
        obj.vlan_tag = struct.unpack_from('!L', buf, 16)[0]
        obj.copy_stage = struct.unpack_from('!B', buf, 20)[0]
        obj.pad = list(struct.unpack_from('!3B', buf, 21))
        return obj

    def __eq__(self, other):
        if type(self) != type(other): return False
        if self.type != other.type: return False
        if self.dest_port != other.dest_port: return False
        if self.vlan_tag != other.vlan_tag: return False
        if self.copy_stage != other.copy_stage: return False
        if self.pad != other.pad: return False
        return True

    def __ne__(self, other):
        return not self.__eq__(other)

    def show(self):
        import loxi.pp
        return loxi.pp.pp(self)

    def pretty_print(self, q):
        q.text("bsn_mirror {")
        with q.group():
            with q.indent(2):
                q.breakable()
                q.text("dest_port = ");
                q.text("%#x" % self.dest_port)
                q.text(","); q.breakable()
                q.text("vlan_tag = ");
                q.text("%#x" % self.vlan_tag)
                q.text(","); q.breakable()
                q.text("copy_stage = ");
                q.text("%#x" % self.copy_stage)
                q.text(","); q.breakable()
                q.text("pad = ");
                q.pp(self.pad)
            q.breakable()
        q.text('}')

class bsn_set_tunnel_dst(Action):
    type = const.OFPAT_VENDOR
    experimenter = 0x5c16c7
    subtype = 2

    def __init__(self, dst=None):
        if dst != None:
            self.dst = dst
        else:
            self.dst = 0

    def pack(self):
        packed = []
        packed.append(struct.pack("!H", self.type))
        packed.append(struct.pack("!H", 0)) # placeholder for len at index 1
        packed.append(struct.pack("!L", self.experimenter))
        packed.append(struct.pack("!L", self.subtype))
        packed.append(struct.pack("!L", self.dst))
        length = sum([len(x) for x in packed])
        packed[1] = struct.pack("!H", length)
        return ''.join(packed)

    @staticmethod
    def unpack(buf):
        obj = bsn_set_tunnel_dst()
        type = struct.unpack_from('!H', buf, 0)[0]
        assert(type == const.OFPAT_VENDOR)
        _length = struct.unpack_from('!H', buf, 2)[0]
        assert(_length == len(buf))
        if _length != 16: raise loxi.ProtocolError("bsn_set_tunnel_dst length is %d, should be 16" % _length)
        experimenter = struct.unpack_from('!L', buf, 4)[0]
        assert(experimenter == 0x5c16c7)
        subtype = struct.unpack_from('!L', buf, 8)[0]
        assert(subtype == 2)
        obj.dst = struct.unpack_from('!L', buf, 12)[0]
        return obj

    def __eq__(self, other):
        if type(self) != type(other): return False
        if self.type != other.type: return False
        if self.dst != other.dst: return False
        return True

    def __ne__(self, other):
        return not self.__eq__(other)

    def show(self):
        import loxi.pp
        return loxi.pp.pp(self)

    def pretty_print(self, q):
        q.text("bsn_set_tunnel_dst {")
        with q.group():
            with q.indent(2):
                q.breakable()
                q.text("dst = ");
                q.text("%#x" % self.dst)
            q.breakable()
        q.text('}')

class enqueue(Action):
    type = const.OFPAT_ENQUEUE

    def __init__(self, port=None, pad=None, queue_id=None):
        if port != None:
            self.port = port
        else:
            self.port = 0
        if pad != None:
            self.pad = pad
        else:
            self.pad = [0,0,0,0,0,0]
        if queue_id != None:
            self.queue_id = queue_id
        else:
            self.queue_id = 0

    def pack(self):
        packed = []
        packed.append(struct.pack("!H", self.type))
        packed.append(struct.pack("!H", 0)) # placeholder for len at index 1
        packed.append(struct.pack("!H", self.port))
        packed.append(struct.pack("!6B", *self.pad))
        packed.append(struct.pack("!L", self.queue_id))
        length = sum([len(x) for x in packed])
        packed[1] = struct.pack("!H", length)
        return ''.join(packed)

    @staticmethod
    def unpack(buf):
        obj = enqueue()
        type = struct.unpack_from('!H', buf, 0)[0]
        assert(type == const.OFPAT_ENQUEUE)
        _length = struct.unpack_from('!H', buf, 2)[0]
        assert(_length == len(buf))
        if _length != 16: raise loxi.ProtocolError("enqueue length is %d, should be 16" % _length)
        obj.port = struct.unpack_from('!H', buf, 4)[0]
        obj.pad = list(struct.unpack_from('!6B', buf, 6))
        obj.queue_id = struct.unpack_from('!L', buf, 12)[0]
        return obj

    def __eq__(self, other):
        if type(self) != type(other): return False
        if self.type != other.type: return False
        if self.port != other.port: return False
        if self.pad != other.pad: return False
        if self.queue_id != other.queue_id: return False
        return True

    def __ne__(self, other):
        return not self.__eq__(other)

    def show(self):
        import loxi.pp
        return loxi.pp.pp(self)

    def pretty_print(self, q):
        q.text("enqueue {")
        with q.group():
            with q.indent(2):
                q.breakable()
                q.text("port = ");
                q.text(util.pretty_port(self.port))
                q.text(","); q.breakable()
                q.text("pad = ");
                q.pp(self.pad)
                q.text(","); q.breakable()
                q.text("queue_id = ");
                q.text("%#x" % self.queue_id)
            q.breakable()
        q.text('}')

class nicira_dec_ttl(Action):
    type = const.OFPAT_VENDOR
    experimenter = 0x2320
    subtype = 18

    def __init__(self, pad=None, pad2=None):
        if pad != None:
            self.pad = pad
        else:
            self.pad = 0
        if pad2 != None:
            self.pad2 = pad2
        else:
            self.pad2 = 0

    def pack(self):
        packed = []
        packed.append(struct.pack("!H", self.type))
        packed.append(struct.pack("!H", 0)) # placeholder for len at index 1
        packed.append(struct.pack("!L", self.experimenter))
        packed.append(struct.pack("!H", self.subtype))
        packed.append(struct.pack("!H", self.pad))
        packed.append(struct.pack("!L", self.pad2))
        length = sum([len(x) for x in packed])
        packed[1] = struct.pack("!H", length)
        return ''.join(packed)

    @staticmethod
    def unpack(buf):
        obj = nicira_dec_ttl()
        type = struct.unpack_from('!H', buf, 0)[0]
        assert(type == const.OFPAT_VENDOR)
        _length = struct.unpack_from('!H', buf, 2)[0]
        assert(_length == len(buf))
        if _length != 16: raise loxi.ProtocolError("nicira_dec_ttl length is %d, should be 16" % _length)
        experimenter = struct.unpack_from('!L', buf, 4)[0]
        assert(experimenter == 0x2320)
        subtype = struct.unpack_from('!H', buf, 8)[0]
        assert(subtype == 18)
        obj.pad = struct.unpack_from('!H', buf, 10)[0]
        obj.pad2 = struct.unpack_from('!L', buf, 12)[0]
        return obj

    def __eq__(self, other):
        if type(self) != type(other): return False
        if self.type != other.type: return False
        if self.pad != other.pad: return False
        if self.pad2 != other.pad2: return False
        return True

    def __ne__(self, other):
        return not self.__eq__(other)

    def show(self):
        import loxi.pp
        return loxi.pp.pp(self)

    def pretty_print(self, q):
        q.text("nicira_dec_ttl {")
        with q.group():
            with q.indent(2):
                q.breakable()
                q.text("pad = ");
                q.text("%#x" % self.pad)
                q.text(","); q.breakable()
                q.text("pad2 = ");
                q.text("%#x" % self.pad2)
            q.breakable()
        q.text('}')

class output(Action):
    type = const.OFPAT_OUTPUT

    def __init__(self, port=None, max_len=None):
        if port != None:
            self.port = port
        else:
            self.port = 0
        if max_len != None:
            self.max_len = max_len
        else:
            self.max_len = 0

    def pack(self):
        packed = []
        packed.append(struct.pack("!H", self.type))
        packed.append(struct.pack("!H", 0)) # placeholder for len at index 1
        packed.append(struct.pack("!H", self.port))
        packed.append(struct.pack("!H", self.max_len))
        length = sum([len(x) for x in packed])
        packed[1] = struct.pack("!H", length)
        return ''.join(packed)

    @staticmethod
    def unpack(buf):
        obj = output()
        type = struct.unpack_from('!H', buf, 0)[0]
        assert(type == const.OFPAT_OUTPUT)
        _length = struct.unpack_from('!H', buf, 2)[0]
        assert(_length == len(buf))
        if _length != 8: raise loxi.ProtocolError("output length is %d, should be 8" % _length)
        obj.port = struct.unpack_from('!H', buf, 4)[0]
        obj.max_len = struct.unpack_from('!H', buf, 6)[0]
        return obj

    def __eq__(self, other):
        if type(self) != type(other): return False
        if self.type != other.type: return False
        if self.port != other.port: return False
        if self.max_len != other.max_len: return False
        return True

    def __ne__(self, other):
        return not self.__eq__(other)

    def show(self):
        import loxi.pp
        return loxi.pp.pp(self)

    def pretty_print(self, q):
        q.text("output {")
        with q.group():
            with q.indent(2):
                q.breakable()
                q.text("port = ");
                q.text(util.pretty_port(self.port))
                q.text(","); q.breakable()
                q.text("max_len = ");
                q.text("%#x" % self.max_len)
            q.breakable()
        q.text('}')

class set_dl_dst(Action):
    type = const.OFPAT_SET_DL_DST

    def __init__(self, dl_addr=None, pad=None):
        if dl_addr != None:
            self.dl_addr = dl_addr
        else:
            self.dl_addr = [0,0,0,0,0,0]
        if pad != None:
            self.pad = pad
        else:
            self.pad = [0,0,0,0,0,0]

    def pack(self):
        packed = []
        packed.append(struct.pack("!H", self.type))
        packed.append(struct.pack("!H", 0)) # placeholder for len at index 1
        packed.append(struct.pack("!6B", *self.dl_addr))
        packed.append(struct.pack("!6B", *self.pad))
        length = sum([len(x) for x in packed])
        packed[1] = struct.pack("!H", length)
        return ''.join(packed)

    @staticmethod
    def unpack(buf):
        obj = set_dl_dst()
        type = struct.unpack_from('!H', buf, 0)[0]
        assert(type == const.OFPAT_SET_DL_DST)
        _length = struct.unpack_from('!H', buf, 2)[0]
        assert(_length == len(buf))
        if _length != 16: raise loxi.ProtocolError("set_dl_dst length is %d, should be 16" % _length)
        obj.dl_addr = list(struct.unpack_from('!6B', buf, 4))
        obj.pad = list(struct.unpack_from('!6B', buf, 10))
        return obj

    def __eq__(self, other):
        if type(self) != type(other): return False
        if self.type != other.type: return False
        if self.dl_addr != other.dl_addr: return False
        if self.pad != other.pad: return False
        return True

    def __ne__(self, other):
        return not self.__eq__(other)

    def show(self):
        import loxi.pp
        return loxi.pp.pp(self)

    def pretty_print(self, q):
        q.text("set_dl_dst {")
        with q.group():
            with q.indent(2):
                q.breakable()
                q.text("dl_addr = ");
                q.text(util.pretty_mac(self.dl_addr))
                q.text(","); q.breakable()
                q.text("pad = ");
                q.pp(self.pad)
            q.breakable()
        q.text('}')

class set_dl_src(Action):
    type = const.OFPAT_SET_DL_SRC

    def __init__(self, dl_addr=None, pad=None):
        if dl_addr != None:
            self.dl_addr = dl_addr
        else:
            self.dl_addr = [0,0,0,0,0,0]
        if pad != None:
            self.pad = pad
        else:
            self.pad = [0,0,0,0,0,0]

    def pack(self):
        packed = []
        packed.append(struct.pack("!H", self.type))
        packed.append(struct.pack("!H", 0)) # placeholder for len at index 1
        packed.append(struct.pack("!6B", *self.dl_addr))
        packed.append(struct.pack("!6B", *self.pad))
        length = sum([len(x) for x in packed])
        packed[1] = struct.pack("!H", length)
        return ''.join(packed)

    @staticmethod
    def unpack(buf):
        obj = set_dl_src()
        type = struct.unpack_from('!H', buf, 0)[0]
        assert(type == const.OFPAT_SET_DL_SRC)
        _length = struct.unpack_from('!H', buf, 2)[0]
        assert(_length == len(buf))
        if _length != 16: raise loxi.ProtocolError("set_dl_src length is %d, should be 16" % _length)
        obj.dl_addr = list(struct.unpack_from('!6B', buf, 4))
        obj.pad = list(struct.unpack_from('!6B', buf, 10))
        return obj

    def __eq__(self, other):
        if type(self) != type(other): return False
        if self.type != other.type: return False
        if self.dl_addr != other.dl_addr: return False
        if self.pad != other.pad: return False
        return True

    def __ne__(self, other):
        return not self.__eq__(other)

    def show(self):
        import loxi.pp
        return loxi.pp.pp(self)

    def pretty_print(self, q):
        q.text("set_dl_src {")
        with q.group():
            with q.indent(2):
                q.breakable()
                q.text("dl_addr = ");
                q.text(util.pretty_mac(self.dl_addr))
                q.text(","); q.breakable()
                q.text("pad = ");
                q.pp(self.pad)
            q.breakable()
        q.text('}')

class set_nw_dst(Action):
    type = const.OFPAT_SET_NW_DST

    def __init__(self, nw_addr=None):
        if nw_addr != None:
            self.nw_addr = nw_addr
        else:
            self.nw_addr = 0

    def pack(self):
        packed = []
        packed.append(struct.pack("!H", self.type))
        packed.append(struct.pack("!H", 0)) # placeholder for len at index 1
        packed.append(struct.pack("!L", self.nw_addr))
        length = sum([len(x) for x in packed])
        packed[1] = struct.pack("!H", length)
        return ''.join(packed)

    @staticmethod
    def unpack(buf):
        obj = set_nw_dst()
        type = struct.unpack_from('!H', buf, 0)[0]
        assert(type == const.OFPAT_SET_NW_DST)
        _length = struct.unpack_from('!H', buf, 2)[0]
        assert(_length == len(buf))
        if _length != 8: raise loxi.ProtocolError("set_nw_dst length is %d, should be 8" % _length)
        obj.nw_addr = struct.unpack_from('!L', buf, 4)[0]
        return obj

    def __eq__(self, other):
        if type(self) != type(other): return False
        if self.type != other.type: return False
        if self.nw_addr != other.nw_addr: return False
        return True

    def __ne__(self, other):
        return not self.__eq__(other)

    def show(self):
        import loxi.pp
        return loxi.pp.pp(self)

    def pretty_print(self, q):
        q.text("set_nw_dst {")
        with q.group():
            with q.indent(2):
                q.breakable()
                q.text("nw_addr = ");
                q.text("%#x" % self.nw_addr)
            q.breakable()
        q.text('}')

class set_nw_src(Action):
    type = const.OFPAT_SET_NW_SRC

    def __init__(self, nw_addr=None):
        if nw_addr != None:
            self.nw_addr = nw_addr
        else:
            self.nw_addr = 0

    def pack(self):
        packed = []
        packed.append(struct.pack("!H", self.type))
        packed.append(struct.pack("!H", 0)) # placeholder for len at index 1
        packed.append(struct.pack("!L", self.nw_addr))
        length = sum([len(x) for x in packed])
        packed[1] = struct.pack("!H", length)
        return ''.join(packed)

    @staticmethod
    def unpack(buf):
        obj = set_nw_src()
        type = struct.unpack_from('!H', buf, 0)[0]
        assert(type == const.OFPAT_SET_NW_SRC)
        _length = struct.unpack_from('!H', buf, 2)[0]
        assert(_length == len(buf))
        if _length != 8: raise loxi.ProtocolError("set_nw_src length is %d, should be 8" % _length)
        obj.nw_addr = struct.unpack_from('!L', buf, 4)[0]
        return obj

    def __eq__(self, other):
        if type(self) != type(other): return False
        if self.type != other.type: return False
        if self.nw_addr != other.nw_addr: return False
        return True

    def __ne__(self, other):
        return not self.__eq__(other)

    def show(self):
        import loxi.pp
        return loxi.pp.pp(self)

    def pretty_print(self, q):
        q.text("set_nw_src {")
        with q.group():
            with q.indent(2):
                q.breakable()
                q.text("nw_addr = ");
                q.text("%#x" % self.nw_addr)
            q.breakable()
        q.text('}')

class set_nw_tos(Action):
    type = const.OFPAT_SET_NW_TOS

    def __init__(self, nw_tos=None, pad=None):
        if nw_tos != None:
            self.nw_tos = nw_tos
        else:
            self.nw_tos = 0
        if pad != None:
            self.pad = pad
        else:
            self.pad = [0,0,0]

    def pack(self):
        packed = []
        packed.append(struct.pack("!H", self.type))
        packed.append(struct.pack("!H", 0)) # placeholder for len at index 1
        packed.append(struct.pack("!B", self.nw_tos))
        packed.append(struct.pack("!3B", *self.pad))
        length = sum([len(x) for x in packed])
        packed[1] = struct.pack("!H", length)
        return ''.join(packed)

    @staticmethod
    def unpack(buf):
        obj = set_nw_tos()
        type = struct.unpack_from('!H', buf, 0)[0]
        assert(type == const.OFPAT_SET_NW_TOS)
        _length = struct.unpack_from('!H', buf, 2)[0]
        assert(_length == len(buf))
        if _length != 8: raise loxi.ProtocolError("set_nw_tos length is %d, should be 8" % _length)
        obj.nw_tos = struct.unpack_from('!B', buf, 4)[0]
        obj.pad = list(struct.unpack_from('!3B', buf, 5))
        return obj

    def __eq__(self, other):
        if type(self) != type(other): return False
        if self.type != other.type: return False
        if self.nw_tos != other.nw_tos: return False
        if self.pad != other.pad: return False
        return True

    def __ne__(self, other):
        return not self.__eq__(other)

    def show(self):
        import loxi.pp
        return loxi.pp.pp(self)

    def pretty_print(self, q):
        q.text("set_nw_tos {")
        with q.group():
            with q.indent(2):
                q.breakable()
                q.text("nw_tos = ");
                q.text("%#x" % self.nw_tos)
                q.text(","); q.breakable()
                q.text("pad = ");
                q.pp(self.pad)
            q.breakable()
        q.text('}')

class set_tp_dst(Action):
    type = const.OFPAT_SET_TP_DST

    def __init__(self, tp_port=None, pad=None):
        if tp_port != None:
            self.tp_port = tp_port
        else:
            self.tp_port = 0
        if pad != None:
            self.pad = pad
        else:
            self.pad = [0,0]

    def pack(self):
        packed = []
        packed.append(struct.pack("!H", self.type))
        packed.append(struct.pack("!H", 0)) # placeholder for len at index 1
        packed.append(struct.pack("!H", self.tp_port))
        packed.append(struct.pack("!2B", *self.pad))
        length = sum([len(x) for x in packed])
        packed[1] = struct.pack("!H", length)
        return ''.join(packed)

    @staticmethod
    def unpack(buf):
        obj = set_tp_dst()
        type = struct.unpack_from('!H', buf, 0)[0]
        assert(type == const.OFPAT_SET_TP_DST)
        _length = struct.unpack_from('!H', buf, 2)[0]
        assert(_length == len(buf))
        if _length != 8: raise loxi.ProtocolError("set_tp_dst length is %d, should be 8" % _length)
        obj.tp_port = struct.unpack_from('!H', buf, 4)[0]
        obj.pad = list(struct.unpack_from('!2B', buf, 6))
        return obj

    def __eq__(self, other):
        if type(self) != type(other): return False
        if self.type != other.type: return False
        if self.tp_port != other.tp_port: return False
        if self.pad != other.pad: return False
        return True

    def __ne__(self, other):
        return not self.__eq__(other)

    def show(self):
        import loxi.pp
        return loxi.pp.pp(self)

    def pretty_print(self, q):
        q.text("set_tp_dst {")
        with q.group():
            with q.indent(2):
                q.breakable()
                q.text("tp_port = ");
                q.text("%#x" % self.tp_port)
                q.text(","); q.breakable()
                q.text("pad = ");
                q.pp(self.pad)
            q.breakable()
        q.text('}')

class set_tp_src(Action):
    type = const.OFPAT_SET_TP_SRC

    def __init__(self, tp_port=None, pad=None):
        if tp_port != None:
            self.tp_port = tp_port
        else:
            self.tp_port = 0
        if pad != None:
            self.pad = pad
        else:
            self.pad = [0,0]

    def pack(self):
        packed = []
        packed.append(struct.pack("!H", self.type))
        packed.append(struct.pack("!H", 0)) # placeholder for len at index 1
        packed.append(struct.pack("!H", self.tp_port))
        packed.append(struct.pack("!2B", *self.pad))
        length = sum([len(x) for x in packed])
        packed[1] = struct.pack("!H", length)
        return ''.join(packed)

    @staticmethod
    def unpack(buf):
        obj = set_tp_src()
        type = struct.unpack_from('!H', buf, 0)[0]
        assert(type == const.OFPAT_SET_TP_SRC)
        _length = struct.unpack_from('!H', buf, 2)[0]
        assert(_length == len(buf))
        if _length != 8: raise loxi.ProtocolError("set_tp_src length is %d, should be 8" % _length)
        obj.tp_port = struct.unpack_from('!H', buf, 4)[0]
        obj.pad = list(struct.unpack_from('!2B', buf, 6))
        return obj

    def __eq__(self, other):
        if type(self) != type(other): return False
        if self.type != other.type: return False
        if self.tp_port != other.tp_port: return False
        if self.pad != other.pad: return False
        return True

    def __ne__(self, other):
        return not self.__eq__(other)

    def show(self):
        import loxi.pp
        return loxi.pp.pp(self)

    def pretty_print(self, q):
        q.text("set_tp_src {")
        with q.group():
            with q.indent(2):
                q.breakable()
                q.text("tp_port = ");
                q.text("%#x" % self.tp_port)
                q.text(","); q.breakable()
                q.text("pad = ");
                q.pp(self.pad)
            q.breakable()
        q.text('}')

class set_vlan_pcp(Action):
    type = const.OFPAT_SET_VLAN_PCP

    def __init__(self, vlan_pcp=None, pad=None):
        if vlan_pcp != None:
            self.vlan_pcp = vlan_pcp
        else:
            self.vlan_pcp = 0
        if pad != None:
            self.pad = pad
        else:
            self.pad = [0,0,0]

    def pack(self):
        packed = []
        packed.append(struct.pack("!H", self.type))
        packed.append(struct.pack("!H", 0)) # placeholder for len at index 1
        packed.append(struct.pack("!B", self.vlan_pcp))
        packed.append(struct.pack("!3B", *self.pad))
        length = sum([len(x) for x in packed])
        packed[1] = struct.pack("!H", length)
        return ''.join(packed)

    @staticmethod
    def unpack(buf):
        obj = set_vlan_pcp()
        type = struct.unpack_from('!H', buf, 0)[0]
        assert(type == const.OFPAT_SET_VLAN_PCP)
        _length = struct.unpack_from('!H', buf, 2)[0]
        assert(_length == len(buf))
        if _length != 8: raise loxi.ProtocolError("set_vlan_pcp length is %d, should be 8" % _length)
        obj.vlan_pcp = struct.unpack_from('!B', buf, 4)[0]
        obj.pad = list(struct.unpack_from('!3B', buf, 5))
        return obj

    def __eq__(self, other):
        if type(self) != type(other): return False
        if self.type != other.type: return False
        if self.vlan_pcp != other.vlan_pcp: return False
        if self.pad != other.pad: return False
        return True

    def __ne__(self, other):
        return not self.__eq__(other)

    def show(self):
        import loxi.pp
        return loxi.pp.pp(self)

    def pretty_print(self, q):
        q.text("set_vlan_pcp {")
        with q.group():
            with q.indent(2):
                q.breakable()
                q.text("vlan_pcp = ");
                q.text("%#x" % self.vlan_pcp)
                q.text(","); q.breakable()
                q.text("pad = ");
                q.pp(self.pad)
            q.breakable()
        q.text('}')

class set_vlan_vid(Action):
    type = const.OFPAT_SET_VLAN_VID

    def __init__(self, vlan_vid=None, pad=None):
        if vlan_vid != None:
            self.vlan_vid = vlan_vid
        else:
            self.vlan_vid = 0
        if pad != None:
            self.pad = pad
        else:
            self.pad = [0,0]

    def pack(self):
        packed = []
        packed.append(struct.pack("!H", self.type))
        packed.append(struct.pack("!H", 0)) # placeholder for len at index 1
        packed.append(struct.pack("!H", self.vlan_vid))
        packed.append(struct.pack("!2B", *self.pad))
        length = sum([len(x) for x in packed])
        packed[1] = struct.pack("!H", length)
        return ''.join(packed)

    @staticmethod
    def unpack(buf):
        obj = set_vlan_vid()
        type = struct.unpack_from('!H', buf, 0)[0]
        assert(type == const.OFPAT_SET_VLAN_VID)
        _length = struct.unpack_from('!H', buf, 2)[0]
        assert(_length == len(buf))
        if _length != 8: raise loxi.ProtocolError("set_vlan_vid length is %d, should be 8" % _length)
        obj.vlan_vid = struct.unpack_from('!H', buf, 4)[0]
        obj.pad = list(struct.unpack_from('!2B', buf, 6))
        return obj

    def __eq__(self, other):
        if type(self) != type(other): return False
        if self.type != other.type: return False
        if self.vlan_vid != other.vlan_vid: return False
        if self.pad != other.pad: return False
        return True

    def __ne__(self, other):
        return not self.__eq__(other)

    def show(self):
        import loxi.pp
        return loxi.pp.pp(self)

    def pretty_print(self, q):
        q.text("set_vlan_vid {")
        with q.group():
            with q.indent(2):
                q.breakable()
                q.text("vlan_vid = ");
                q.text("%#x" % self.vlan_vid)
                q.text(","); q.breakable()
                q.text("pad = ");
                q.pp(self.pad)
            q.breakable()
        q.text('}')

class strip_vlan(Action):
    type = const.OFPAT_STRIP_VLAN

    def __init__(self, pad=None):
        if pad != None:
            self.pad = pad
        else:
            self.pad = [0,0,0,0]

    def pack(self):
        packed = []
        packed.append(struct.pack("!H", self.type))
        packed.append(struct.pack("!H", 0)) # placeholder for len at index 1
        packed.append(struct.pack("!4B", *self.pad))
        length = sum([len(x) for x in packed])
        packed[1] = struct.pack("!H", length)
        return ''.join(packed)

    @staticmethod
    def unpack(buf):
        obj = strip_vlan()
        type = struct.unpack_from('!H', buf, 0)[0]
        assert(type == const.OFPAT_STRIP_VLAN)
        _length = struct.unpack_from('!H', buf, 2)[0]
        assert(_length == len(buf))
        if _length != 8: raise loxi.ProtocolError("strip_vlan length is %d, should be 8" % _length)
        obj.pad = list(struct.unpack_from('!4B', buf, 4))
        return obj

    def __eq__(self, other):
        if type(self) != type(other): return False
        if self.type != other.type: return False
        if self.pad != other.pad: return False
        return True

    def __ne__(self, other):
        return not self.__eq__(other)

    def show(self):
        import loxi.pp
        return loxi.pp.pp(self)

    def pretty_print(self, q):
        q.text("strip_vlan {")
        with q.group():
            with q.indent(2):
                q.breakable()
                q.text("pad = ");
                q.pp(self.pad)
            q.breakable()
        q.text('}')


def parse_vendor(buf):
    if len(buf) < 16:
        raise loxi.ProtocolError("experimenter action too short")

    experimenter, = struct.unpack_from("!L", buf, 4)
    if experimenter == 0x005c16c7: # Big Switch Networks
        subtype, = struct.unpack_from("!L", buf, 8)
    elif experimenter == 0x00002320: # Nicira
        subtype, = struct.unpack_from("!H", buf, 8)
    else:
        raise loxi.ProtocolError("unexpected experimenter id %#x" % experimenter)

    if subtype in experimenter_parsers[experimenter]:
        return experimenter_parsers[experimenter][subtype](buf)
    else:
        raise loxi.ProtocolError("unexpected BSN experimenter subtype %#x" % subtype)

parsers = {
    const.OFPAT_ENQUEUE : enqueue.unpack,
    const.OFPAT_OUTPUT : output.unpack,
    const.OFPAT_SET_DL_DST : set_dl_dst.unpack,
    const.OFPAT_SET_DL_SRC : set_dl_src.unpack,
    const.OFPAT_SET_NW_DST : set_nw_dst.unpack,
    const.OFPAT_SET_NW_SRC : set_nw_src.unpack,
    const.OFPAT_SET_NW_TOS : set_nw_tos.unpack,
    const.OFPAT_SET_TP_DST : set_tp_dst.unpack,
    const.OFPAT_SET_TP_SRC : set_tp_src.unpack,
    const.OFPAT_SET_VLAN_PCP : set_vlan_pcp.unpack,
    const.OFPAT_SET_VLAN_VID : set_vlan_vid.unpack,
    const.OFPAT_STRIP_VLAN : strip_vlan.unpack,
    const.OFPAT_VENDOR : parse_vendor,
}

experimenter_parsers = {
    0x2320 : {
        18: nicira_dec_ttl.unpack,
    },
    0x5c16c7 : {
        1: bsn_mirror.unpack,
        2: bsn_set_tunnel_dst.unpack,
    },
}