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Viewing changes to neutron/agent/l3/namespaces.py

  • Committer: Package Import Robot
  • Author(s): James Page
  • Date: 2015-03-30 11:17:19 UTC
  • mfrom: (1.1.21)
  • Revision ID: package-import@ubuntu.com-20150330111719-h0gx7233p4jkkgfh
Tags: 1:2015.1~b3-0ubuntu1
https://launchpad.net/bugs/1263539
* New upstream milestone release:
  - d/control: Align version requirements with upstream.
  - d/control: Add new dependency on oslo-log.
  - d/p/*: Rebase.
  - d/control,d/neutron-plugin-hyperv*: Dropped, decomposed into
    separate project upstream.
  - d/control,d/neutron-plugin-openflow*: Dropped, decomposed into
    separate project upstream.
  - d/neutron-common.install: Add neutron-rootwrap-daemon and 
    neutron-keepalived-state-change binaries.
  - d/rules: Ignore neutron-hyperv-agent when installing; only for Windows.
  - d/neutron-plugin-cisco.install: Drop neutron-cisco-cfg-agent as
    decomposed into separate project upstream.
  - d/neutron-plugin-vmware.install: Drop neutron-check-nsx-config and
    neutron-nsx-manage as decomposed into separate project upstream.
  - d/control: Add dependency on python-neutron-fwaas to neutron-l3-agent.
* d/pydist-overrides: Add overrides for oslo packages.
* d/control: Fixup type in package description (LP: #1263539).
* d/p/fixup-driver-test-execution.patch: Cherry pick fix from upstream VCS
  to support unit test exection in out-of-tree vendor drivers.
* d/neutron-common.postinst: Allow general access to /etc/neutron but limit
  access to root/neutron to /etc/neutron/neutron.conf to support execution
  of unit tests in decomposed vendor drivers.
* d/control: Add dependency on python-neutron-fwaas to neutron-l3-agent
  package.

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neutron/agent/l3/namespaces.py
 
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# Copyright 2015 Hewlett-Packard Development Company, L.P.
 
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#
 
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#    Licensed under the Apache License, Version 2.0 (the "License"); you may
 
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#    not use this file except in compliance with the License. You may obtain
 
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#    a copy of the License at
 
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#
 
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#         http://www.apache.org/licenses/LICENSE-2.0
 
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#
 
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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, WITHOUT
 
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#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 
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#    License for the specific language governing permissions and limitations
 
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#    under the License.
 
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#
 
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from oslo_log import log as logging
 
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from neutron.agent.linux import ip_lib
 
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from neutron.i18n import _LE
 
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LOG = logging.getLogger(__name__)
 
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NS_PREFIX = 'qrouter-'
 
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INTERNAL_DEV_PREFIX = 'qr-'
 
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EXTERNAL_DEV_PREFIX = 'qg-'
 
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# TODO(Carl) It is odd that this file needs this.  It is a dvr detail.
 
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ROUTER_2_FIP_DEV_PREFIX = 'rfp-'
 
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class Namespace(object):
 
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    def __init__(self, name, agent_conf, driver, use_ipv6):
 
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        self.name = name
 
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        self.ip_wrapper_root = ip_lib.IPWrapper()
 
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        self.agent_conf = agent_conf
 
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        self.driver = driver
 
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        self.use_ipv6 = use_ipv6
 
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    def create(self):
 
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        ip_wrapper = self.ip_wrapper_root.ensure_namespace(self.name)
 
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        cmd = ['sysctl', '-w', 'net.ipv4.ip_forward=1']
 
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        ip_wrapper.netns.execute(cmd)
 
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        if self.use_ipv6:
 
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            cmd = ['sysctl', '-w', 'net.ipv6.conf.all.forwarding=1']
 
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            ip_wrapper.netns.execute(cmd)
 
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    def delete(self):
 
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        if self.agent_conf.router_delete_namespaces:
 
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            try:
 
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                self.ip_wrapper_root.netns.delete(self.name)
 
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            except RuntimeError:
 
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                msg = _LE('Failed trying to delete namespace: %s')
 
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                LOG.exception(msg, self.name)
 
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class RouterNamespace(Namespace):
 
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    def __init__(self, router_id, agent_conf, driver, use_ipv6):
 
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        self.router_id = router_id
 
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        name = self._get_ns_name(router_id)
 
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        super(RouterNamespace, self).__init__(
 
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            name, agent_conf, driver, use_ipv6)
 
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    @staticmethod
 
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    def _get_ns_name(router_id):
 
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        return (NS_PREFIX + router_id)
 
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    def delete(self):
 
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        ns_ip = ip_lib.IPWrapper(namespace=self.name)
 
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        for d in ns_ip.get_devices(exclude_loopback=True):
 
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            if d.name.startswith(INTERNAL_DEV_PREFIX):
 
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                # device is on default bridge
 
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                self.driver.unplug(d.name, namespace=self.name,
 
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                                   prefix=INTERNAL_DEV_PREFIX)
 
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            elif d.name.startswith(ROUTER_2_FIP_DEV_PREFIX):
 
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                ns_ip.del_veth(d.name)
 
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            elif d.name.startswith(EXTERNAL_DEV_PREFIX):
 
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                self.driver.unplug(
 
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                    d.name,
 
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                    bridge=self.agent_conf.external_network_bridge,
 
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                    namespace=self.name,
 
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                    prefix=EXTERNAL_DEV_PREFIX)
 
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        super(RouterNamespace, self).delete()