From patchwork Sun Nov 15 18:05:54 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 7619301 Return-Path: X-Original-To: patchwork-linux-rdma@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 7EBFABF90C for ; Sun, 15 Nov 2015 18:10:42 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id A3255205B8 for ; Sun, 15 Nov 2015 18:10:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5E193205B9 for ; Sun, 15 Nov 2015 18:10:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752346AbbKOSKi (ORCPT ); Sun, 15 Nov 2015 13:10:38 -0500 Received: from bombadil.infradead.org ([198.137.202.9]:48354 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752350AbbKOSKa (ORCPT ); Sun, 15 Nov 2015 13:10:30 -0500 Received: from [83.175.99.196] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.80.1 #2 (Red Hat Linux)) id 1Zy1kz-0001DJ-KV; Sun, 15 Nov 2015 18:10:30 +0000 From: Christoph Hellwig To: Doug Ledford Cc: linux-rdma@vger.kernel.org Subject: [PATCH 1/9] IB: start documenting device capabilities Date: Sun, 15 Nov 2015 19:05:54 +0100 Message-Id: <1447610762-3781-2-git-send-email-hch@lst.de> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1447610762-3781-1-git-send-email-hch@lst.de> References: <1447610762-3781-1-git-send-email-hch@lst.de> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org See http://www.infradead.org/rpr.html Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org X-Spam-Status: No, score=-7.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Just IB_DEVICE_LOCAL_DMA_LKEY and IB_DEVICE_MEM_MGT_EXTENSIONS for now as I'm most familar with those. Signed-off-by: Christoph Hellwig Reviewed-by: Sagi Grimberg Reviewed-By: Jason Gunthorpe --- include/rdma/ib_verbs.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 45ce36e..6034f92 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -120,6 +120,14 @@ enum ib_device_cap_flags { IB_DEVICE_RC_RNR_NAK_GEN = (1<<12), IB_DEVICE_SRQ_RESIZE = (1<<13), IB_DEVICE_N_NOTIFY_CQ = (1<<14), + + /* + * This device supports a per-device lkey or stag that can be + * used without performing a memory registration for the local + * memory. Note that ULPs should never check this flag, but + * instead of use the local_dma_lkey flag in the ib_pd structure, + * which will always contain a usable lkey. + */ IB_DEVICE_LOCAL_DMA_LKEY = (1<<15), IB_DEVICE_RESERVED = (1<<16), /* old SEND_W_INV */ IB_DEVICE_MEM_WINDOW = (1<<17), @@ -133,6 +141,16 @@ enum ib_device_cap_flags { IB_DEVICE_UD_IP_CSUM = (1<<18), IB_DEVICE_UD_TSO = (1<<19), IB_DEVICE_XRC = (1<<20), + + /* + * This device supports the IB "base memory management extension", + * which includes support for fast registrations (IB_WR_REG_MR, + * IB_WR_LOCAL_INV and IB_WR_SEND_WITH_INV verbs). This flag should + * also be set by any iWarp device which must support FRs to comply + * to the iWarp verbs spec. iWarp devices also support the + * IB_WR_RDMA_READ_WITH_INV verb for RDMA READs that invalidate the + * stag. + */ IB_DEVICE_MEM_MGT_EXTENSIONS = (1<<21), IB_DEVICE_BLOCK_MULTICAST_LOOPBACK = (1<<22), IB_DEVICE_MEM_WINDOW_TYPE_2A = (1<<23),