inputs on porting network(nic) drivers from Linux to Xen

inputs on porting network(nic) drivers from Linux to Xen

[ravi kerur]

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I am looking for inputs to port an existing pci nic driver from Linux to
Xen, I understand nic driver needs netback and netfront functionality in
order to work in Xen but I am unable to nail down the details of changes
required esp. what changes are required in TX/RX buffers for DMA in existing
driver and change them for netback/netfront functionality, handling IRQs...
A pointer to existing nic driver or if pointer to document would be really
helpful.

Thanks
-RK

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Re: inputs on porting network(nic) drivers from Linux to Xen

[Konrad Rzeszutek Wilk]

On Tue, Nov 03, 2009 at 09:41:43PM -0800, ravi kerur wrote:
> I am looking for inputs to port an existing pci nic driver from Linux to
> Xen, I understand nic driver needs netback and netfront functionality in

As in you want to drive the NIC in the hypervisor?

Re: inputs on porting network(nic) drivers from Linux to Xen

[ravi kerur]

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Nopes, I need this driver to run in dom0 and domU via netback and netfront.
My main confusion is what changes to be done such that existing DMA Tx/Rx
rings in native driver starts talking via netfront/netback between domU's,
dom0 and NIC. Inputs appreciated.

Thanks
-RK

On Wed, Nov 4, 2009 at 10:40 AM, Konrad Rzeszutek Wilk <
konrad.wilk@oracle.com> wrote:

> On Tue, Nov 03, 2009 at 09:41:43PM -0800, ravi kerur wrote:
> > I am looking for inputs to port an existing pci nic driver from Linux to
> > Xen, I understand nic driver needs netback and netfront functionality in
>
> As in you want to drive the NIC in the hypervisor?
>

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