[dpdk-dev] [PATCH v3 1/3] xen: Add UIO kernel driver

[Jan Blunck]

On Tue, Mar 22, 2016 at 12:27 PM, Thomas Monjalon
<thomas.monjalon at 6wind.com> wrote:
> 2016-03-22 12:04, Jan Blunck:
>> On Tue, Mar 22, 2016 at 11:42 AM, Thomas Monjalon
>> <thomas.monjalon at 6wind.com> wrote:
>> > 2016-03-22 10:55, Jan Blunck:
>> >> New UIO helper kernel driver for Xen netfront UIO poll mode driver.
>> >>
>> >> Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>
>> >> Signed-off-by: Jan Blunck <jblunck at infradead.org>
>> >
>> > Is it contributed upstream?
>>
>> No. Haven't planed that yet.
>
> Integrating new kernel modules in DPDK, without upstream work,
> is not planned.
>

I'll look into the existing Linux kernel netfront driver and check if
upstream is actually willing to integrate the UIO part.

>> > Is there something common with igb_uio?
>>
>> AFAIK igb_uio is mapping the bars via UIO. The Xen netfront driver
>> isn't simulating a PCI interface. Instead it directly maps the TX/RX
>> ring.
>>
>> Overlap is limited to reading sysfs files. Don't know if that is worth
>> being extracted into a standalone header.
>
> No it is not worth extracting. I'm just trying to understand what this
> module is, because the log doesn't say much.
>

I can address that for the upstream submission and drop it from this series.