[dpdk-dev] [PATCH 0/2] Native uio-based PMD for Mellanox ConnectX-3 devices

[Keunhong Lee]

Answer 1. UIO based driver is faster then ib based driver.
It can saturate 40G link with MTU sized packets using a single thread while
ib wrapper cannot.

Answer 2. Sorry, I missed that. I'll make a new patch email with my real
name.


Question 1. Is it OK if I separate GPL-based and BSD-based codes into
separated patches?
mlx4 kernel driver itself is dual licenses, so I think they are considered
as BSD
in my source code.
The only source code under GPL is bitmap, integer logarithm, and red-black
tree
contained in mlnx_uio/kernel directory.

Keunhong.



2015-07-06 23:17 GMT+09:00 Thomas Monjalon <thomas.monjalon at 6wind.com>:

> 2015-07-06 22:28, leeopop:
> > This is a native UIO-based PMD for Mellanox ConnectX-3 devices.
> > It uses a persistent memory library in order to provide a persistent
> > scartch area for the mlx4 HCA driver.
>
> What is the benefit of this UIO approach compared to the OFED based driver?
>
> > We release the driver itself under BSD license, but to use it for
> > commercial products, you may have to re-implement the separated GPL
> sources.
>
> The GPL sources are not really separated.
> The DPDK libraries must be BSD-licensed.
>
> > The GPL affected source codes reside in the mlnx_uio/kernel directory.
>
> It seems that a large part of the GPL driver was also copied in
> mlnx_uio/mlnx/.
>
> Given that you are dropping a huge GPL codebase (whose you don't own the
> copyright)
> in a BSD library, and that you didn't give your real name in the
> signed-off line,
> it is NACK.
>