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

Thomas Monjalon thomas.monjalon at 6wind.com
Tue Mar 22 12:27:03 CET 2016


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.

> > 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.




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