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#
# Copyright (c) 2013 Nicolas PLANEL <nicolas.planel@enovance.com>
#
"""BRIDGE network link
"""
from __future__ import absolute_import
from ... import core as netlink
from .. import capi as capi
class BRIDGELink(object):
def __init__(self, link):
self._link = link
self._has_ext_info = capi.rtnl_link_bridge_has_ext_info(self._link)
self._port_state_values = ['disabled','listening','learning','forwarding','blocking']
def bridge_assert_ext_info(self):
if self._has_ext_info == False:
print """
Please update your kernel to be able to call this method.
Your current kernel bridge version is too old to support this extention.
"""
raise RuntimeWarning()
def port_state2str(self, state):
return self._port_state_values[state]
def str2port_state(self, str):
for value, port in enumerate(self._port_state_values):
if str.lower() == port:
return value
raise ValueError()
@property
@netlink.nlattr(type=int)
def port_state(self):
"""bridge state :
%s
""" % (self.port_state)
return capi.rtnl_link_bridge_get_state(self._link)
@port_state.setter
def port_state(self, state):
capi.rtnl_link_bridge_set_state(self._link, int(state))
@property
@netlink.nlattr(type=int)
def priority(self):
"""bridge prio
"""
bridge_assert_ext_info()
return capi.rtnl_link_bridge_get_prio(self._link)
@priority.setter
def priority(self, prio):
bridge_assert_ext_info()
if prio < 0 or prio >= 2**16:
raise ValueError()
capi.rtnl_link_bridge_set_prio(self._link, int(prio))
@property
@netlink.nlattr(type=int)
def cost(self):
"""bridge prio
"""
bridge_assert_ext_info()
return capi.rtnl_link_bridge_get_cost(self._link)
@cost.setter
def cost(self, cost):
bridge_assert_ext_info()
if cost < 0 or cost >= 2**32:
raise ValueError()
capi.rtnl_link_bridge_set_cost(self._link, int(cost))
def brief(self):
return 'bridge-has-ext-info {0}'.format(self._has_ext_info)
def init(link):
link.bridge = BRIDGELink(link._rtnl_link)
return link.bridge
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