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. >
