Xen devel - Apr 2006 - [PATCH][XM-TEST][1/3] New Network Infrastructure for Xm-Test

Hi,

This patch and the two that will follow add a new network infrastructure
to xm-test. The goal is to make writing tests with networking easy. The
patches add a new XenDevice class and NetConfig class. The XenDevice and
the XenNetDevice subclass represent devices in xm-test and are linked to
the XenDomains. The NetConfig class manages xm-test''s network
configuration.

The patches make it possible to easily create a domain with a network
device. The XmTestNetDomain class creates a domain with a single
ethernet device. It automatically grabs an IP and runs the necessary
commands on the guest domain - ifconfig - for you. Or, you can create
domains with XmTestDomain and then use the new device factory to add new
devices to the domain:

domain = XmTestDomain()
domain.newDevice(XenNetDevice, "eth0")

Xm-test networking must be configured when it''s made. There are new
options for configure that set IP address range - it uses the zeroconf
range as default, IP network address, and IP netmask. Xm-test refers to
this range for grabbing and configuring IPs for test domains. 

NOTE: Xm-Test with these patches will only support a bridged environment
and the range of addresses provided. 

Features that need to be added following this set:

1) DHCP - setting configuration to use DHCP for IPs rather than a
configured range.

2) NAT environment

3) Routed environment

4) Attaching and detaching devices to existing domains. 

The first patch, which is included, creates a domain type attribute for
XenDomain, marking the domain as either PV for Para-virt domU or HVM for
a fully virtualized domain. The XenNetDevice checks to see what the
current domain is to set specific parameters.

All comments are welcome.

Thanks,

Dan


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