63 lines
1.8 KiB
Python
63 lines
1.8 KiB
Python
# Copyright (C) 2014 VA Linux Systems Japan K.K.
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# Copyright (C) 2014 YAMAMOTO Takashi <yamamoto at valinux co jp>
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from neutron.plugins.common import constants as p_const
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def _seq():
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"""Yield sequential numbers starting from 0."""
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i = 0
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while True:
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yield i
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i += 1
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_table_id_gen = _seq()
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def _table_id():
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"""A simple table id allocator."""
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return _table_id_gen.next()
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# Supported tunnel types.
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TUNNEL_TYPES = [
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p_const.TYPE_GRE,
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p_const.TYPE_VXLAN,
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]
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# Reversed version of TUNNEL_TYPES.
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TUNNEL_TYPE_IDX = dict((t, TUNNEL_TYPES.index(t)) for t in TUNNEL_TYPES)
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# We use sequential table ids starting from 0.
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# We don't hardcode values here to avoid manual reassignments eg. when adding
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# a new tunnel type.
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# See a big comment in flows.py for how each tables are used.
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CHECK_IN_PORT = _table_id()
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TUNNEL_IN = {}
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for t in TUNNEL_TYPES:
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TUNNEL_IN[t] = _table_id()
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PHYS_IN = _table_id()
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LOCAL_IN = _table_id()
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ARP_PASSTHROUGH = _table_id()
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ARP_RESPONDER = _table_id()
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TUNNEL_OUT = _table_id()
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LOCAL_OUT = _table_id()
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PHYS_OUT = _table_id()
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TUNNEL_FLOOD = {}
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for t in TUNNEL_TYPES:
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TUNNEL_FLOOD[t] = _table_id()
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PHYS_FLOOD = _table_id()
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LOCAL_FLOOD = _table_id()
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