From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dennis Dalessandro Subject: Create a common verbs transport library Date: Tue, 29 Sep 2015 08:56:49 -0400 Message-ID: <20150929125648.GA3433@phlsvsds.ph.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Return-path: Content-Disposition: inline Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-rdma@vger.kernel.org Hi All, One of the conditions to move the hfi1 driver from staging into the normal drivers/infiniband/hw directory is to handle the code duplication in our verbs layer. This is going to be done by creating a new kmod which we will call rdmavt, for RDMA verbs transport. This will eventually live in the existing drivers/infiniband tree in a new sw directory: drivers/infiniband/sw/vt. This new directory can serve as a home for soft roce when its ready as well. The verbs library will start out life in drivers/staging/rdma/vt alongside hfi1. We (Intel) will push incremental patches to keep the community apprised of the development and allow for early and more continuous feedback. Once complete the plan would be to move out of staging along with hfi1. The current verbs support in the IB core should not need to be modified, rdmavt is just another verbs provider. Drivers will not use rdmavt directly. Rather, rdmavt will use the drivers to abstract away the hardware differences. Here is a diagram of what this will look like. +-------+ |Ib Core| +-------+ + | +------v--------+ |Verbs Transport| +-+----------+--+ | | | | +-v--+ +-v--+ |qib | |hfi1| +----+ +----+ -Denny -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html