[PATCH 00/10] veth support

[Ondrej Lichtner]

From: Ondrej Lichtner

The following set of patches further improves network namespace support in
LNST.

Most of the patch set implements support for veth devices. Since veth devices
are always created in pairs they're represented a bit differently in the recipe
XML - by encompasing two <veth> tags within a <veth_pair> tag.

The first patch of the set also takes care of remounting sysfs on namespace
creation which makes it usable for configuration again.

Example recipe with veth devices:
<lnstrecipe>
    <network>
        <host id="testmachine1">
            <interfaces>
                <eth id="out_if" label="tnet"/>
                <veth_pair>
                    <veth id="testifc1" netns="xyz">
                        <addresses>
                            <address value="192.168.200.2/24"/>
                        </addresses>
                    </veth>
                    <veth id="testifc2"/>
                </veth_pair>
                <bridge id="br">
                    <slaves>
                        <slave id="out_if"/>
                        <slave id="testifc2"/>
                    </slaves>
                </bridge>
            </interfaces>
        </host>

<host id="testmachine2">
            <interfaces>
                <eth id="testifc2" label="tnet">
                    <addresses>
                        <address value="192.168.200.3/24"/>
                    </addresses>
                </eth>
            </interfaces>
        </host>
    </network>

<task>
        <run host="testmachine1" module="IcmpPing" netns="xyz">
            <options>
                <option name="addr" value="{ip(testmachine2,testifc2)}"/>
                <option name="count" value="40"/>
                <option name="interval" value="1"/>
            </options>
        </run>
    </task>
</lnstrecipe>

Ondrej Lichtner (10):
  NetTestSlave: remount sysfs in new net namespace
  ConnectionHandler: check specific connections
  schema-recipe: add support for veth interfaces
  RecipeParser: support parsing veth interfaces
  NetTestSlave: extend communication options between namespaces
  NetTestSlave: make return_if_netns method recursive
  *ConfigDevice: split device creation and configuration
  *ConfigDevice: add VEth classes
  NetTestSlave: add methods {create, deconfigure}_if_pair
  Machine: Interface class veth support

lnst/Common/ConnectionHandler.py     |   8 +-
 lnst/Controller/Machine.py           |  39 +++++++--
 lnst/Controller/NetTestController.py |   3 +
 lnst/Controller/RecipeParser.py      |  16 +++-
 lnst/Slave/InterfaceManager.py       |  57 ++++++++++++-
 lnst/Slave/NetConfigDevice.py        | 108 ++++++++++++++----------
 lnst/Slave/NetTestSlave.py           | 155 +++++++++++++++++++++++++++++++++--
 lnst/Slave/NmConfigDevice.py         |  15 +++-
 schema-recipe.rng                    |  36 ++++++++
 9 files changed, 369 insertions(+), 68 deletions(-)