0253740a23
Implement L2, L3, security groups, metadata server support for MidoNet Neutron plugin for Havana. blueprint midonet-plugin-havana Change-Id: I0dd1a2ca17d760443c4c7a464a66b6d0a2cf194a
65 lines
1.8 KiB
Python
65 lines
1.8 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright (C) 2013 Midokura PTE LTD
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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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#
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# @author: Ryu Ishimoto, Midokura Japan KK
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from neutron.common import constants
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def subnet_str(cidr):
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"""Convert the cidr string to x.x.x.x_y format
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:param cidr: CIDR in x.x.x.x/y format
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"""
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if cidr is None:
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return None
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return cidr.replace("/", "_")
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def net_addr(addr):
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"""Get network address prefix and length from a given address."""
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if addr is None:
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return (None, None)
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nw_addr, nw_len = addr.split('/')
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nw_len = int(nw_len)
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return nw_addr, nw_len
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def get_ethertype_value(ethertype):
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"""Convert string representation of ethertype to the numerical."""
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if ethertype is None:
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return None
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mapping = {
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'ipv4': 0x0800,
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'ipv6': 0x86DD,
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'arp': 0x806
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}
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return mapping.get(ethertype.lower())
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def get_protocol_value(protocol):
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"""Convert string representation of protocol to the numerical."""
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if protocol is None:
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return None
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mapping = {
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'tcp': constants.TCP_PROTOCOL,
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'udp': constants.UDP_PROTOCOL,
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'icmp': constants.ICMP_PROTOCOL
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}
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return mapping.get(protocol.lower())
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