Merge "Migrate "ethtool" to oslo.privsep"

etc/neutron/rootwrap.d/dhcp.filters

@@ -10,7 +10,6 @@
 
 # dhcp-agent
 dnsmasq: CommandFilter, dnsmasq, root
-ethtool: CommandFilter, ethtool, root
 # dhcp-agent uses kill as well, that's handled by the generic KillFilter
 # it looks like these are the only signals needed, per
 # neutron/agent/linux/dhcp.py

etc/neutron/rootwrap.d/l3.filters

@@ -12,7 +12,6 @@
 arping: CommandFilter, arping, root
 
 # l3_agent
-ethtool: CommandFilter, ethtool, root
 sysctl: CommandFilter, sysctl, root
 route: CommandFilter, route, root
 radvd: CommandFilter, radvd, root

neutron/agent/linux/interface.py

@@ -24,12 +24,12 @@ from oslo_utils import excutils
 from pyroute2.netlink import exceptions as pyroute2_exc
 
 from neutron.agent.common import ovs_lib
-from neutron.agent.linux import ethtool
 from neutron.agent.linux import ip_lib
 from neutron.common import utils
 from neutron.conf.plugins.ml2.drivers import ovs_conf
 from neutron.plugins.ml2.drivers.openvswitch.agent.common \
     import constants as ovs_const
+from neutron.privileged.agent.linux import ethtool
 
 LOG = logging.getLogger(__name__)
 
@@ -439,8 +439,8 @@ class OVSInterfaceDriver(LinuxInterfaceDriver):
             # ovs-dpdk does not do checksum calculations for veth interface
             # (bug 1832021)
             if self.conf.OVS.datapath_type == ovs_const.OVS_DATAPATH_NETDEV:
-                ethtool.Ethtool.offload(ns_dev.name, rx=False, tx=False,
-                                        namespace=namespace)
+                ethtool.offload(ns_dev.name, rx=False, tx=False,
+                                namespace=namespace)
             root_dev.link.set_up()
 
     def unplug(self, device_name, bridge=None, namespace=None, prefix=None):

neutron/privileged/agent/linux/ethtool.py

@@ -1,4 +1,4 @@
-# Copyright 2020 OpenStack Foundation
+# Copyright 2020 Red Hat, Inc.
 # All Rights Reserved.
 #
 #    Licensed under the Apache License, Version 2.0 (the "License"); you may
@@ -13,22 +13,19 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from neutron.agent.linux import ip_lib
+from oslo_concurrency import processutils
+
+from neutron import privileged
+
+COMMAND = 'ethtool'
 
 
-class Ethtool(object):
-
-    COMMAND = 'ethtool'
-
-    @staticmethod
-    def _cmd(cmd, namespace, **kwargs):
-        ip_wrapper = ip_lib.IPWrapper(namespace)
-        return ip_wrapper.netns.execute(cmd, run_as_root=True, **kwargs)
-
-    @classmethod
-    def offload(cls, device, rx, tx, namespace=None):
-        rx = 'on' if rx else 'off'
-        tx = 'on' if tx else 'off'
-        cmd = ['--offload', device, 'rx', rx, 'tx', tx]
-        cmd = [cls.COMMAND] + cmd
-        cls._cmd(cmd, namespace)
+@privileged.default.entrypoint
+def offload(device, rx, tx, namespace=None):
+    cmd = []
+    if namespace:
+        cmd += ['ip', 'netns', 'exec', namespace]
+    rx = 'on' if rx else 'off'
+    tx = 'on' if tx else 'off'
+    cmd += [COMMAND, '--offload', device, 'rx', rx, 'tx', tx]
+    return processutils.execute(*cmd)

neutron/tests/unit/agent/linux/test_interface.py

@@ -20,7 +20,6 @@ from oslo_utils import excutils
 from pyroute2.netlink import exceptions as pyroute2_exc
 
 from neutron.agent.common import ovs_lib
-from neutron.agent.linux import ethtool
 from neutron.agent.linux import interface
 from neutron.agent.linux import ip_lib
 from neutron.common import utils
@@ -28,6 +27,7 @@ from neutron.conf.agent import common as config
 from neutron.conf.plugins.ml2.drivers import ovs_conf
 from neutron.plugins.ml2.drivers.openvswitch.agent.common \
     import constants as ovs_const
+from neutron.privileged.agent.linux import ethtool
 from neutron.tests import base
 
 
@@ -78,8 +78,8 @@ class TestBase(base.BaseTestCase):
         self.conf = config.setup_conf()
         ovs_conf.register_ovs_opts(self.conf)
         config.register_interface_opts(self.conf)
-        self.eth_tool_p = mock.patch.object(ethtool, 'Ethtool')
-        self.eth_tool = self.eth_tool_p.start()
+        self.eth_offload_p = mock.patch.object(ethtool, 'offload')
+        self.eth_offload = self.eth_offload_p.start()
         self.ip_dev_p = mock.patch.object(ip_lib, 'IPDevice')
         self.ip_dev = self.ip_dev_p.start()
         self.ip_p = mock.patch.object(ip_lib, 'IPWrapper')
@@ -591,9 +591,8 @@ class TestOVSInterfaceDriverWithVeth(TestOVSInterfaceDriver):
             self.ip.assert_has_calls(expected)
             root_dev.assert_has_calls([mock.call.link.set_up()])
             ns_dev.assert_has_calls([mock.call.link.set_up()])
-            self.eth_tool.assert_has_calls([mock.call.offload(
-                                            devname, rx=False,
-                                            tx=False, namespace=namespace)])
+            self.eth_offload.assert_has_calls(
+                [mock.call(devname, rx=False, tx=False, namespace=namespace)])
 
     def test_plug_new(self):
         # The purpose of test_plug_new in parent class(TestOVSInterfaceDriver)