Well, I'm back.
My client has informed me that the alternatives suggested below aren't
acceptable. They want to use the VirtualBox network drivers. How can I use
those drivers without creating a VirtualBox VM? Any pointers to documentation
or sample code that will show me what I need would be most helpful.
Thank you,
- Gary Palter
Principal Software Engineer
Clozure Associates
On Dec 5, 2012, at 6:59 PM, Ivo Smits <[email protected]> wrote:
> Just a few ideas which are probably somewhat easier:
> - Use libpcap to capture and inject network packets (useable directly
> from userspace, you will need to handle packet filtering yourself but
> it's easy)
> - Use a tap device and a linux kernel network bridge (the tap device
> will work like a real switch port, with some filtering provided by the
> network bridge)
> - Use VDE (should be easy to use, can connect to host network
> interfaces, tap devices or act as a NAT gateway)
>
> Ivo Smits
>
> Op 5-12-2012 23:17, Gary Palter schreef:
>> I am working on a project for a client which involves migrating a 20+ year
>> old application to Linux. (All I can say about the application is that it's
>> an emulator for an almost 30 year old computer architecture.)
>>
>> The guest's operating system is aware that it's running in a virtual
>> machine. For network access, it communicates with the emulator through a
>> set of queues to send and receive Ethernet packets. In the original
>> emulator, we attach a packet filter to the Ethernet interface in order to
>> inject packets onto the wire and grab packets intended for the guest.
>>
>> For the new emulator, we want to use the VirtualBox network drivers to setup
>> a bridged interface. I've spent several hours reading through the source
>> code and, frankly, I'm lost.
>>
>> How, exactly, does VirtualBox setup a bridged interface? (I know that
>> VboxNetFlt driver is involved but I don't know how it's hooked up.) How is
>> ARP handled? How would I use the VirtualBox drivers in our emulator,
>> keeping in mind that there's no VBox guest involved?
>>
>> Thank you for your assistance,
>>
>> - Gary Palter
>> Principal Software Engineer
>> Clozure Associates
>>
>>
>> _______________________________________________
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>>
>
>
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