RDMA stack update based on Linux v4.9

From owner-svn-doc-all@freebsd.org Sun Feb 18 00:57:55 2018 Return-Path: Delivered-To: svn-doc-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id E3254F23B66; Sun, 18 Feb 2018 00:57:54 +0000 (UTC) (envelope-from bjk@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 973A577F42; Sun, 18 Feb 2018 00:57:54 +0000 (UTC) (envelope-from bjk@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 91F102462D; Sun, 18 Feb 2018 00:57:54 +0000 (UTC) (envelope-from bjk@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id w1I0vsuV077004; Sun, 18 Feb 2018 00:57:54 GMT (envelope-from bjk@FreeBSD.org) Received: (from bjk@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id w1I0vsfv077003; Sun, 18 Feb 2018 00:57:54 GMT (envelope-from bjk@FreeBSD.org) Message-Id: <201802180057.w1I0vsfv077003@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: bjk set sender to bjk@FreeBSD.org using -f From: Benjamin Kaduk Date: Sun, 18 Feb 2018 00:57:54 +0000 (UTC) To: doc-committers@freebsd.org, svn-doc-all@freebsd.org, svn-doc-head@freebsd.org Subject: svn commit: r51429 - head/en_US.ISO8859-1/htdocs/news/status X-SVN-Group: doc-head X-SVN-Commit-Author: bjk X-SVN-Commit-Paths: head/en_US.ISO8859-1/htdocs/news/status X-SVN-Commit-Revision: 51429 X-SVN-Commit-Repository: doc MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-doc-all@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: "SVN commit messages for the entire doc trees \(except for " user" , " projects" , and " translations" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 18 Feb 2018 00:57:55 -0000 Author: bjk Date: Sun Feb 18 00:57:54 2018 New Revision: 51429 URL: https://svnweb.freebsd.org/changeset/doc/51429 Log: Add 2017Q4 RDAM stack entry from Meny Yossefi Modified: head/en_US.ISO8859-1/htdocs/news/status/report-2017-10-2017-12.xml Modified: head/en_US.ISO8859-1/htdocs/news/status/report-2017-10-2017-12.xml ============================================================================== --- head/en_US.ISO8859-1/htdocs/news/status/report-2017-10-2017-12.xml Sun Feb 18 00:37:58 2018 (r51428) +++ head/en_US.ISO8859-1/htdocs/news/status/report-2017-10-2017-12.xml Sun Feb 18 00:57:54 2018 (r51429) @@ -196,4 +196,78 @@ otherwise. + + + RDMA stack update based on Linux v4.9 + + + + Mellanox Drivers Team + FreeBSD-drivers@mellanox.com + + + + + Subversion Commit Adding the Driver + + + +

An update to the &os; RDMA stack based on code from Linux + v4.9 was merged into &os; 12-CURRENT on November 4th, + including many bug fixes and new features with a focus on + RoCEv2 — Routable RoCE.

+ +

RDMA over Converged Ethernet (RoCE) is a network protocol + that leverages Remote Direct Memory Access (RDMA) capabilities + to accelerate communications between applications hosted on + clusters of servers and storage arrays. RoCE incorporates the + IBTA RDMA semantics to allow devices to perform direct memory + to memory transfers at the application level without involving + the host CPU. Both the transport processing and the memory + translation and placement are performed by hardware resulting + in lower latency, higher throughput, and better performance + compared to software based protocols.

+ +

RoCEv2 is the most recent version of RoCE, adding some routing + capabilities as both IP and UDP headers are included in the + packet format. To complete the RoCEv2 solution, Support for + ECN (Explicit Congestion Notification, lossy fabric) and PFC + (Priority Flow Control, lossless fabric) protocols with rate + limiting options will be added in the first quarter of + 2018.

+ +

This project also introduces the following updates:

+ +

libibverbs, librdmacm, + libibumad and vendor-specific libraries + ported from the Linux rdma-core v15+
InfiniBand diagnostic tools, + infiniband-diags, version 1.6.7
InfiniBand subnet manager — OpenSM, version 3.3.20+
LinuxKPI support

+ +

Important notes:

+ +

GPL-only (non dual-licensed) portions of the Linux code were either + excluded or written from scratch under a BSD license by + &a.hselasky;.
The code has been tested by several RDMA vendors + that also support iWARP.

+ + + Mellanox Technologies + + + Add ECN (Explicit Congestion Notification) and PFC + (Priority Flow Control) support. + +