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Viewing File: bridge.py
from functools import reduce
from pyroute2.config import AF_BRIDGE
from pyroute2.netlink.rtnl.ifinfmsg import ifinfmsg, protinfo_bridge
from .common import Index, IPRouteFilter, NLAKeyTransform
PREFIXLEN = len(protinfo_bridge.prefix)
class BridgeFieldFilter(Index, NLAKeyTransform):
_nla_prefix = ifinfmsg.prefix
class BridgeIPRouteFilter(IPRouteFilter):
def build_vlan_info_spec(self, orig_spec):
range_vids = [int(i) for i in str(orig_spec['vid']).split('-')]
if len(range_vids) == 2:
if 0 < int(range_vids[0]) < range_vids[1] < 4095:
new_spec = []
new_spec.append(
{
'vid': range_vids[0],
'flags': self.convert_flags('range_begin'),
}
)
new_spec.append(
{
'vid': range_vids[1],
'flags': self.convert_flags('range_end'),
}
)
return new_spec
elif len(range_vids) == 1:
if 0 < range_vids[0] < 4095:
# PVID?
if 'pvid' in orig_spec.keys():
if orig_spec['pvid']:
orig_spec['flags'] = self.convert_flags(
['pvid', 'untagged']
)
del orig_spec['pvid']
# Make sure the vid is an int.
orig_spec['vid'] = range_vids[0]
return [orig_spec]
return []
def build_vlan_tunnel_info_spec(self, orig_spec):
# vlan_tunnel_info uses the same format as vlan_info,
# just adds tunnel_id.
vlan_info_spec = self.build_vlan_info_spec(orig_spec)
range_ids = [int(i) for i in str(orig_spec['id']).split('-')]
if len(range_ids) == 2 and len(vlan_info_spec) == 2:
if 0 < range_ids[0] < range_ids[1] < 16777215:
# vid to id mapping range must be the same length
if (
vlan_info_spec[1]['vid'] - vlan_info_spec[0]['vid']
== range_ids[1] - range_ids[0]
):
vlan_info_spec[0]['id'] = range_ids[0]
vlan_info_spec[1]['id'] = range_ids[1]
return [
self.create_nla_spec(vlan_info_spec[0]),
self.create_nla_spec(vlan_info_spec[1]),
]
elif len(range_ids) == 1 and len(vlan_info_spec) == 1:
if 0 < range_ids[0] < 4095:
vlan_info_spec[0]['id'] = range_ids[0]
# Delete flags because vlan_tunnel_info doesn't seem
# to use them, except for the RANGE.
try:
del vlan_info_spec[0]['flags']
except KeyError:
pass
return [self.create_nla_spec(vlan_info_spec[0])]
return []
def create_nla_spec(self, spec):
attrs = []
for key in spec.keys():
nla = ifinfmsg.af_spec_bridge.vlan_tunnel_info.name2nla(key)
attrs.append([nla, spec[key]])
return {'attrs': attrs}
def convert_flags(self, flags):
if isinstance(flags, int):
return flags
elif isinstance(flags, str):
return ifinfmsg.af_spec_bridge.vlan_info.names2flags([flags])
elif isinstance(flags, list):
return ifinfmsg.af_spec_bridge.vlan_info.names2flags(flags)
return 0
def build_spec(self, orig_spec):
if 'vid' in orig_spec.keys():
if 'id' in orig_spec.keys():
return self.build_vlan_tunnel_info_spec(orig_spec)
else:
return self.build_vlan_info_spec(orig_spec)
return []
def finalize(self, context):
if self.command != 'dump':
if 'IFLA_AF_SPEC' not in context:
context['IFLA_AF_SPEC'] = {'attrs': []}
for key in ('vlan_info', 'vlan_tunnel_info'):
if key in context:
nla = ifinfmsg.af_spec_bridge.name2nla(key)
new_spec = self.build_spec(context[key])
for spec in new_spec:
context['IFLA_AF_SPEC']['attrs'].append([nla, spec])
try:
del context[key]
except KeyError:
pass
for key in ('mode', 'vlan_flags'):
if key in context:
nla = ifinfmsg.af_spec_bridge.name2nla(key)
context['IFLA_AF_SPEC']['attrs'].append(
[nla, context[key]]
)
try:
del context[key]
except KeyError:
pass
class BridgePortFieldFilter(IPRouteFilter):
_nla_prefix = ifinfmsg.prefix
_nla_names = [x[0] for x in protinfo_bridge.nla_map]
# allow lowercase names w/o prefixes
_nla_names = reduce(
lambda x, y: x + y, [[x, x[PREFIXLEN:].lower()] for x in _nla_names]
)
# allow tuple ids for the dump_filter lookup
_nla_names = reduce(
lambda x, y: x + y, [[x, ('protinfo', x)] for x in _nla_names]
)
allowed = list(_nla_names)
allowed.append('attrs')
allowed.append('family')
allowed.append('index')
def finalize(self, context):
context['family'] = AF_BRIDGE
keys = tuple(context.keys())
if self.command in ('show', 'dump'):
for key in keys:
if isinstance(key, str) and key in self._nla_names:
value = context[key]
if isinstance(value, bool):
value = int(value)
context[('protinfo', key)] = value
del context[key]
return
attrs = []
for key in keys:
attrs.append((protinfo_bridge.name2nla(key), context[key]))
context['attrs'] = [('IFLA_PROTINFO', {'attrs': attrs}, 0x8000)]
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