On Tue, Feb 19, 2019 at 11:08:50AM +0100, Bernard Metzler wrote: > This patch set contributes version 5 of the SoftiWarp > driver, as originally introduced to the list Oct 6th, 2017. > SoftiWarp (siw) implements the iWarp RDMA protocol over > kernel TCP sockets. The driver integrates with the > linux-rdma framework. > > In response to the various helpful feedback, we fixed (besides > other small fixes) the following issues: > > 1. The debugfs logic got completely removed. There is no > debugfs entry for siw anymore. We will interate with rdmatool > in the future. > > 2. The driver adheres to the device and object management as > recently proposed by Jason Gunthorpe. This includes the new > protection domain management. > > 3. An entry to linux MAINTAINERS for siw was added. > > 4. The packet length at MPA protocol level got restricted > to physical MTU size: to interoperate with hardware iWarp > devices such as Chelsio T5/T6, GSO usage got unselected. > It can be selcted with a global parameter 'gso_seg_limit'. > Setting 'gso_seg_limit = 0' makes full use of GSO if advertised > by the TCP socket. This almost doubles bandwidth for bulk data > transfers in a pure siw <-> siw setting, but does not interoperate > wth some hardware RNIC's. > > 5. An 'SPDX-License-Identifier' got added to all files > > 6. The user interface as defined in include/uapi/rdma/siwa_user.h > got cleaned up. > > 7. Useless redefinition of functions for kernel reference count > reading got removed. > > > The driver continues to make use of rdma-netdev extensions to > add and delete links, as proposed by Steve Wise. > > The driver continues to rely on the iWarp port mapper extensions > for software RDMA devices, as proposed by Steve Wise. > > We maintain a snapshot of the current code at > https://github.com/zrlio/softiwarp-for-linux-rdma.git > within branch 'siw-for-rdma-next-v5'. > This branch includes the latest netlink and portmapper patches from > Steve as well as the latest device and object management > from Jason. > > The matching siw user library is maintained at > https://github.com/zrlio/softiwarp-user-for-linux-rdma.git. > It is based on rdma-core, and extended with Steve's patches > to both rdma netlink and portmapper. The relevant branch > name is 'siw-for-rdma-next'. > > Since siw may generate work completion notifications from a > kthread context, performance of kernel siw clients like NVMeF > depends on the following pending kernel patch (included in > https://github.com/zrlio/softiwarp-for-linux-rdma.git): > https://www.spinics.net/lists/linux-rdma/msg75081.html > > As always, we'd highly appreciate your code review. Thanks > very much for your time! > > Bernard Bernard, Can you please post your fixed series so we will be able to continue review? Thanks
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