82 lines
2.8 KiB
Python
82 lines
2.8 KiB
Python
#
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# Copyright (c) 2022 Pim van Pelt
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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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# http://www.apache.org/licenses/LICENSE-2.0
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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 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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#
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import logging
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import config.lcp as lcp
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import config.address as address
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import config.mac as mac
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def get_loopbacks(yaml):
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""" Return a list of all loopbacks. """
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ret = []
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if 'loopbacks' in yaml:
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for ifname, iface in yaml['loopbacks'].items():
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ret.append(ifname)
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return ret
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def get_by_lcp_name(yaml, lcpname):
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""" Returns the loopback by a given lcp name, or None,None if it does not exist """
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if not 'loopbacks' in yaml:
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return None,None
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for ifname, iface in yaml['loopbacks'].items():
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if 'lcp' in iface and iface['lcp'] == lcpname:
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return ifname, iface
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return None,None
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def get_by_name(yaml, ifname):
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""" Return the loopback by name, if it exists. Return None otherwise. """
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try:
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if ifname in yaml['loopbacks']:
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return ifname, yaml['loopbacks'][ifname]
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except:
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pass
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return None, None
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def is_loopback(yaml, ifname):
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""" Returns True if the interface name is an existing loopback. """
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ifname, iface = get_by_name(yaml, ifname)
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return not iface == None
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def validate_loopbacks(yaml):
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result = True
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msgs = []
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logger = logging.getLogger('vppcfg.config')
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logger.addHandler(logging.NullHandler())
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if not 'loopbacks' in yaml:
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return result, msgs
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for ifname, iface in yaml['loopbacks'].items():
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logger.debug("loopback %s" % iface)
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instance = int(ifname[4:])
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if instance > 4095:
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msgs.append("loopback %s has instance %d which is too large" % (ifname, instance))
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result = False
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if 'lcp' in iface and not lcp.is_unique(yaml, iface['lcp']):
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msgs.append("loopback %s does not have a unique LCP name %s" % (ifname, iface['lcp']))
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result = False
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if 'addresses' in iface:
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for a in iface['addresses']:
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if not address.is_allowed(yaml, ifname, iface['addresses'], a):
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msgs.append("loopback %s IP address %s conflicts with another" % (ifname, a))
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result = False
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if 'mac' in iface and mac.is_multicast(iface['mac']):
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msgs.append("loopback %s MAC address %s cannot be multicast" % (ifname, iface['mac']))
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result = False
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return result, msgs
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