def address_exists(netns=None, **kwarg):
ret = 0
ipr = None
if netns is None:
ipr = IPRoute()
else:
ipr = NetNS(netns)
if 'match' in kwarg:
nkw = kwarg['match']
else:
nkw = dict(kwarg)
for key in ('address', 'local'):
if key in nkw:
nkw[key] = nkw[key].split('/')[0]
if 'ifname' in kwarg:
links = list(ipr.link_lookup(ifname=kwarg['ifname']))
if links:
nkw['index'] = links[0]
nkw.pop('ifname')
else:
ipr.close()
return 0
ret = list(ipr.addr('dump', match=nkw))
ipr.close()
return len(ret) == 1
def interface_exists(netns=None, **kwarg):
ret = 0
ipr = None
if netns is None:
ipr = IPRoute()
else:
ipr = NetNS(netns)
spec = {}
spec.update(kwarg)
ret = list(ipr.link_lookup(**spec))
ipr.close()
return len(ret) >= 1
def neighbour_exists(netns=None, *argv, **kwarg):
ret = 0
ipr = None
if netns is None:
ipr = IPRoute()
else:
ipr = NetNS(netns)
spec = {}
spec.update(kwarg)
ret = list(ipr.get_neighbours(*argv, **spec))
ipr.close()
return len(ret) >= 1
def route_exists(netns=None, **kwarg):
ret = 0
ipr = None
if netns is not None:
ipr = NetNS(netns)
else:
ipr = IPRoute()
ret = list(ipr.route('dump', **kwarg))
ipr.close()
return len(ret) >= 1
def teardown(self):
'''
1. close the test NDB
2. remove the registered interfaces, ignore not existing
'''
self.ndb.close()
self.ipr.close()
for (ifname, nsname) in self.interfaces.items():
try:
ipr = None
#
# spawn ipr to remove the interface
if nsname is not None:
ipr = NetNS(nsname)
else:
ipr = IPRoute()
#
# lookup the interface index
index = list(ipr.link_lookup(ifname=ifname))
if len(index):
index = index[0]
else:
#
# ignore not existing interfaces
continue
#
# try to remove it
ipr.link('del', index=index)
except NetlinkError as e:
#
# ignore if removed (t.ex. by another process)
if e.code != errno.ENODEV:
raise
finally:
if ipr is not None:
ipr.close()
for nsname in self.namespaces:
netns.remove(nsname)
for net in self.ipnets:
free_network(net)
def qdisc_exists(netns=None, kind=None, **kwarg):
if netns is None:
ipr = IPRoute()
else:
ipr = NetNS(netns)
opts = {}
with ipr:
if 'ifname' in kwarg:
opts['index'] = ipr.link_lookup(ifname=kwarg.pop('ifname'))[0]
ret = list(ipr.get_qdiscs(**opts))
if kind is not None:
ret = [x for x in ret if x.get_attr('TCA_KIND') == kind]
if kwarg:
pre = ret
ret = []
for qdisc in pre:
options = qdisc.get_attr('TCA_OPTIONS')
for opt in kwarg:
if options[opt] != kwarg[opt]:
break
else:
ret.append(qdisc)
return len(ret) > 0