build/patches/neutron-patch-NSDriver.patch

   1 From d51e6ba77c3f40c7c04c97b1de06bf9344c95929 Mon Sep 17 00:00:00 2001
   2 From: Feng Pan <fpan@redhat.com>
   3 Date: Thu, 20 Jul 2017 16:12:45 -0400
   4 Subject: [PATCH] Add NSDriver
   5
   6 ---
   7  neutron/agent/l3/namespaces.py   |  6 ++--
   8  neutron/agent/l3/router_info.py  | 12 ++++---
   9  neutron/agent/linux/interface.py | 76 +++++++++++++++++++++++++++++++++++++++-
  10  3 files changed, 86 insertions(+), 8 deletions(-)
  11
  12 diff --git a/neutron/agent/l3/namespaces.py b/neutron/agent/l3/namespaces.py
  13 index f65c706..e9fc4b7 100644
  14 --- a/neutron/agent/l3/namespaces.py
  15 +++ b/neutron/agent/l3/namespaces.py
  16 @@ -18,6 +18,7 @@ import functools
  17  from oslo_log import log as logging
  18  from oslo_utils import excutils
  19
  20 +from neutron.agent.linux.interface import OVSInterfaceDriver
  21  from neutron._i18n import _LE, _LW
  22  from neutron.agent.linux import ip_lib
  23
  24 @@ -110,8 +111,9 @@ class Namespace(object):
  25
  26  class RouterNamespace(Namespace):
  27
  28 -    def __init__(self, router_id, agent_conf, driver, use_ipv6):
  29 +    def __init__(self, router_id, agent_conf, driver, use_ipv6, ovs_driver):
  30          self.router_id = router_id
  31 +        self.ovs_driver = ovs_driver
  32          name = self._get_ns_name(router_id)
  33          super(RouterNamespace, self).__init__(
  34              name, agent_conf, driver, use_ipv6)
  35 @@ -132,7 +134,7 @@ class RouterNamespace(Namespace):
  36              elif d.name.startswith(ROUTER_2_FIP_DEV_PREFIX):
  37                  ns_ip.del_veth(d.name)
  38              elif d.name.startswith(EXTERNAL_DEV_PREFIX):
  39 -                self.driver.unplug(
  40 +                self.ovs_driver.unplug(
  41                      d.name,
  42                      bridge=self.agent_conf.external_network_bridge,
  43                      namespace=self.name,
  44 diff --git a/neutron/agent/l3/router_info.py b/neutron/agent/l3/router_info.py
  45 index 46db6a5..6775882 100644
  46 --- a/neutron/agent/l3/router_info.py
  47 +++ b/neutron/agent/l3/router_info.py
  48 @@ -30,6 +30,7 @@ from neutron.common import exceptions as n_exc
  49  from neutron.common import ipv6_utils
  50  from neutron.common import utils as common_utils
  51  from neutron.ipam import utils as ipam_utils
  52 +from neutron.agent.linux.interface import OVSInterfaceDriver
  53
  54  LOG = logging.getLogger(__name__)
  55  INTERNAL_DEV_PREFIX = namespaces.INTERNAL_DEV_PREFIX
  56 @@ -52,6 +53,7 @@ class RouterInfo(object):
  57                   interface_driver,
  58                   use_ipv6=False):
  59          self.agent = agent
  60 +        self.ovs_driver = OVSInterfaceDriver(agent_conf)
  61          self.router_id = router_id
  62          self.ex_gw_port = None
  63          self._snat_enabled = None
  64 @@ -63,7 +65,7 @@ class RouterInfo(object):
  65          self.router = router
  66          self.use_ipv6 = use_ipv6
  67          ns = self.create_router_namespace_object(
  68 -            router_id, agent_conf, interface_driver, use_ipv6)
  69 +            router_id, agent_conf, interface_driver, use_ipv6, self.ovs_driver)
  70          self.router_namespace = ns
  71          self.ns_name = ns.name
  72          self.available_mark_ids = set(range(ADDRESS_SCOPE_MARK_ID_MIN,
  73 @@ -100,9 +102,9 @@ class RouterInfo(object):
  74          self.router_namespace.create()
  75
  76      def create_router_namespace_object(
  77 -            self, router_id, agent_conf, iface_driver, use_ipv6):
  78 +            self, router_id, agent_conf, iface_driver, use_ipv6, ovs_driver):
  79          return namespaces.RouterNamespace(
  80 -            router_id, agent_conf, iface_driver, use_ipv6)
  81 +            router_id, agent_conf, iface_driver, use_ipv6, ovs_driver)
  82
  83      @property
  84      def router(self):
  85 @@ -609,7 +611,7 @@ class RouterInfo(object):
  86                  for ip in floating_ips]
  87
  88      def _plug_external_gateway(self, ex_gw_port, interface_name, ns_name):
  89 -        self.driver.plug(ex_gw_port['network_id'],
  90 +        self.ovs_driver.plug(ex_gw_port['network_id'],
  91                           ex_gw_port['id'],
  92                           interface_name,
  93                           ex_gw_port['mac_address'],
  94 @@ -679,7 +681,7 @@ class RouterInfo(object):
  95
  96          self._add_route_to_gw(ex_gw_port, device_name=interface_name,
  97                                namespace=ns_name, preserve_ips=preserve_ips)
  98 -        self.driver.init_router_port(
  99 +        self.ovs_driver.init_router_port(
 100              interface_name,
 101              ip_cidrs,
 102              namespace=ns_name,
 103 diff --git a/neutron/agent/linux/interface.py b/neutron/agent/linux/interface.py
 104 index 1f1ed39..b7781e2 100644
 105 --- a/neutron/agent/linux/interface.py
 106 +++ b/neutron/agent/linux/interface.py
 107 @@ -15,7 +15,7 @@
 108
 109  import abc
 110  import time
 111 -
 112 +import eventlet
 113  import netaddr
 114  from neutron_lib import constants
 115  from oslo_config import cfg
 116 @@ -317,6 +317,80 @@ class NullDriver(LinuxInterfaceDriver):
 117      def unplug(self, device_name, bridge=None, namespace=None, prefix=None):
 118          pass
 119
 120 +class NSDriver(LinuxInterfaceDriver):
 121 +    """Device independent driver enabling creation of a non device specific
 122 +    interface in network spaces.  Attachment to the device is not performed.
 123 +    """
 124 +    MAX_TIME_FOR_DEVICE_EXISTENCE = 30
 125 +
 126 +    @classmethod
 127 +    def _device_is_created_in_time(cls, device_name):
 128 +        """See if device is created, within time limit."""
 129 +        attempt = 0
 130 +        while attempt < NSDriver.MAX_TIME_FOR_DEVICE_EXISTENCE:
 131 +            if ip_lib.device_exists(device_name):
 132 +                return True
 133 +            attempt += 1
 134 +            eventlet.sleep(1)
 135 +        LOG.error(_LE("Device %(dev)s was not created in %(time)d seconds"),
 136 +                  {'dev': device_name,
 137 +                   'time': NSDriver.MAX_TIME_FOR_DEVICE_EXISTENCE})
 138 +        return False
 139 +
 140 +    def _configure_mtu(self, ns_dev, mtu=None):
 141 +        # Need to set MTU, after added to namespace. See review
 142 +        # https://review.openstack.org/327651
 143 +        try:
 144 +            # Note: network_device_mtu will be deprecated in future
 145 +            mtu_override = self.conf.network_device_mtu
 146 +        except cfg.NoSuchOptError:
 147 +            LOG.warning(_LW("Config setting for MTU deprecated - any "
 148 +                            "override will be ignored."))
 149 +            mtu_override = None
 150 +        if mtu_override:
 151 +            mtu = mtu_override
 152 +            LOG.debug("Overriding MTU to %d", mtu)
 153 +        if mtu:
 154 +            ns_dev.link.set_mtu(mtu)
 155 +        else:
 156 +            LOG.debug("No MTU provided - skipping setting value")
 157 +
 158 +    def plug(self, network_id, port_id, device_name, mac_address,
 159 +             bridge=None, namespace=None, prefix=None, mtu=None):
 160 +
 161 +        # Overriding this, we still want to add an existing device into the
 162 +        # namespace.
 163 +        self.plug_new(network_id, port_id, device_name, mac_address,
 164 +                      bridge, namespace, prefix, mtu)
 165 +
 166 +    def plug_new(self, network_id, port_id, device_name, mac_address,
 167 +                 bridge=None, namespace=None, prefix=None, mtu=None):
 168 +
 169 +        ip = ip_lib.IPWrapper()
 170 +        ns_dev = ip.device(device_name)
 171 +
 172 +        LOG.debug("Plugging dev: '%s' into namespace: '%s' ",
 173 +                  device_name, namespace)
 174 +
 175 +        # Wait for device creation
 176 +        if not self._device_is_created_in_time(device_name):
 177 +            return
 178 +
 179 +        ns_dev.link.set_address(mac_address)
 180 +
 181 +        if namespace:
 182 +            namespace_obj = ip.ensure_namespace(namespace)
 183 +            namespace_obj.add_device_to_namespace(ns_dev)
 184 +
 185 +        self._configure_mtu(ns_dev, mtu)
 186 +
 187 +        ns_dev.link.set_up()
 188 +
 189 +    def unplug(self, device_name, bridge=None, namespace=None, prefix=None):
 190 +        # Device removal is done externally. Just remove the namespace
 191 +        LOG.debug("Removing namespace: '%s'", namespace)
 192 +        ip_lib.IPWrapper(namespace).garbage_collect_namespace()
 193 +
 194
 195  class OVSInterfaceDriver(LinuxInterfaceDriver):
 196      """Driver for creating an internal interface on an OVS bridge."""
 197 --
 198 2.9.3
 199