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gns3-server/gns3server/modules/dynamips/nios/nio_mcast.py
2015-01-20 13:24:00 +01:00

109 lines
2.9 KiB
Python

# -*- coding: utf-8 -*-
#
# Copyright (C) 2013 GNS3 Technologies Inc.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
Interface for multicast NIOs.
"""
from .nio import NIO
import logging
log = logging.getLogger(__name__)
class NIO_Mcast(NIO):
"""
Dynamips Linux Ethernet NIO.
:param hypervisor: Dynamips hypervisor instance
:param group: multicast group to bind
:param port: port for binding
"""
_instance_count = 0
def __init__(self, hypervisor, group, port):
NIO.__init__(self, hypervisor)
# create an unique ID
self._id = NIO_Mcast._instance_count
NIO_Mcast._instance_count += 1
self._name = 'nio_mcast' + str(self._id)
self._group = group
self._port = port
self._ttl = 1 # default TTL
self._hypervisor.send("nio create_mcast {name} {mgroup} {mport}".format(name=self._name,
mgroup=group,
mport=port))
log.info("NIO Multicast {name} created with mgroup={group}, mport={port}".format(name=self._name,
group=group,
port=port))
@classmethod
def reset(cls):
"""
Reset the instance count.
"""
cls._instance_count = 0
@property
def group(self):
"""
Returns the multicast group
:returns: multicast group address
"""
return self._group
@property
def port(self):
"""
Returns the port
:returns: port number
"""
return self._port
@property
def ttl(self):
"""
Returns the TTL associated with the multicast address.
:returns: TTL value
"""
return self._ttl
@ttl.setter
def ttl(self, ttl):
"""
Sets the TTL for the multicast address
:param ttl: TTL value
"""
self._hypervisor.send("nio set_mcast_ttl {name} {ttl}".format(name=self._name,
ttl=ttl))
self._ttl = ttl