Re: [Qemu-devel] A QEMU net driver for OpenVPN's Tap-Win32 driver

[Fabrice Bellard]

Hi,

This patch is very interesting - thank you for your work. One detail 
though: the license of the tap-win32.c wrapper file must be changed to BSD.

Fabrice.

John Poplett wrote:
> Hi, all
>
> Here is a patch that allows qemu to interface with OpenVPN's Tap-Win32
> driver on windows. This provides an alternative to slirp and allows a guest
> OS to appear as though it is directly connected to a LAN.
>
> I have tested it by bridging OpenVPN's Tap-Win32 adapter with an Ethernet
> adapter using Windows XP's software network bridge. It gets about 4Mbytes
> bandwidth in either direction, tested with iperf on my 2.4 GHz P4. My test
> environment consists of Windows XP (host), Slackware 10 (guest) and the 
> 2.0 beta 11 version of the Tap-Win32 driver. I have
> not tested this code against ppc or sparc.
>
> Most of the work was done by a friend who wishes to remain anonymous. I 
> have
> contributed the semaphore code, benchmarking and other minor tweaks.
>
> The patch adds a new, win32 specific command line option: -tap adapter. 
> "adapter" should be the name of an installed Tap-Win32 driver.
>
> Here is an example command line using the new option:
>
> qemu.exe -L %QEMU_HOME%\. -tap tap -m 128 -boot c -hda slackware-10-x86.img
>
> John
>
>
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