From patchwork Mon Dec 28 20:59:45 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dennis Dalessandro X-Patchwork-Id: 7927061 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 DF85EBEEE5 for ; Mon, 28 Dec 2015 20:59:51 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 7ED98201C8 for ; Mon, 28 Dec 2015 20:59:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D1D22200E6 for ; Mon, 28 Dec 2015 20:59:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752695AbbL1U7s (ORCPT ); Mon, 28 Dec 2015 15:59:48 -0500 Received: from mga03.intel.com ([134.134.136.65]:4381 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752643AbbL1U7r (ORCPT ); Mon, 28 Dec 2015 15:59:47 -0500 Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by orsmga103.jf.intel.com with ESMTP; 28 Dec 2015 12:59:46 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.20,492,1444719600"; d="scan'208";a="20368864" Received: from scymds01.sc.intel.com ([10.82.194.37]) by fmsmga004.fm.intel.com with ESMTP; 28 Dec 2015 12:59:46 -0800 Received: from scvm10.sc.intel.com (scvm10.sc.intel.com [10.82.195.27]) by scymds01.sc.intel.com with ESMTP id tBSKxjKa011425; Mon, 28 Dec 2015 12:59:45 -0800 Received: from scvm10.sc.intel.com (localhost [127.0.0.1]) by scvm10.sc.intel.com with ESMTP id tBSKxjPY031653; Mon, 28 Dec 2015 12:59:45 -0800 Subject: [PATCH v2 01/36] IB/rdmavt: Create module framework and handle driver registration To: dledford@redhat.com From: Dennis Dalessandro Cc: linux-rdma@vger.kernel.org, Mike Marciniszyn , Ira Weiny Date: Mon, 28 Dec 2015 12:59:45 -0800 Message-ID: <20151228205825.29850.23290.stgit@scvm10.sc.intel.com> In-Reply-To: <20151228205612.29850.7328.stgit@scvm10.sc.intel.com> References: <20151228205612.29850.7328.stgit@scvm10.sc.intel.com> User-Agent: StGit/0.16 MIME-Version: 1.0 Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org X-Spam-Status: No, score=-6.9 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 This patch introduces the basics for a new module called rdma_vt. This new driver is a software implementation of the InfiniBand verbs and aims to replace the multiple implementations that exist and duplicate each others' code. While the call to actually register the device with the IB core happens in rdma_vt, most of the work is still done in the drivers themselves. This will be changing in a follow on patch this is just laying the groundwork for this infrastructure. Reviewed-by: Ira Weiny Reviewed-by: Mike Marciniszyn Signed-off-by: Dennis Dalessandro --- Changes since v1: remove rdmavt specific driver version move copyright above license text MAINTAINERS | 6 ++ drivers/infiniband/Kconfig | 2 + drivers/infiniband/Makefile | 1 drivers/infiniband/sw/Makefile | 1 drivers/infiniband/sw/rdmavt/Kconfig | 6 ++ drivers/infiniband/sw/rdmavt/Makefile | 10 ++++ drivers/infiniband/sw/rdmavt/vt.c | 83 +++++++++++++++++++++++++++++++++ drivers/infiniband/sw/rdmavt/vt.h | 53 +++++++++++++++++++++ include/rdma/rdma_vt.h | 70 ++++++++++++++++++++++++++++ 9 files changed, 232 insertions(+), 0 deletions(-) create mode 100644 drivers/infiniband/sw/Makefile create mode 100644 drivers/infiniband/sw/rdmavt/Kconfig create mode 100644 drivers/infiniband/sw/rdmavt/Makefile create mode 100644 drivers/infiniband/sw/rdmavt/vt.c create mode 100644 drivers/infiniband/sw/rdmavt/vt.h create mode 100644 include/rdma/rdma_vt.h -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/MAINTAINERS b/MAINTAINERS index 69c8a9c..37fc192 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -8880,6 +8880,12 @@ L: rds-devel@oss.oracle.com (moderated for non-subscribers) S: Supported F: net/rds/ +RDMAVT - RDMA verbs software +M: Dennis Dalessandro +L: linux-rdma@vger.kernel.org +S: Supported +F: drivers/infiniband/sw/rdmavt + READ-COPY UPDATE (RCU) M: "Paul E. McKenney" M: Josh Triplett diff --git a/drivers/infiniband/Kconfig b/drivers/infiniband/Kconfig index aa26f3c..1b00bb8 100644 --- a/drivers/infiniband/Kconfig +++ b/drivers/infiniband/Kconfig @@ -72,4 +72,6 @@ source "drivers/infiniband/ulp/srpt/Kconfig" source "drivers/infiniband/ulp/iser/Kconfig" source "drivers/infiniband/ulp/isert/Kconfig" +source "drivers/infiniband/sw/rdmavt/Kconfig" + endif # INFINIBAND diff --git a/drivers/infiniband/Makefile b/drivers/infiniband/Makefile index dc21836..fad0b44 100644 --- a/drivers/infiniband/Makefile +++ b/drivers/infiniband/Makefile @@ -1,3 +1,4 @@ obj-$(CONFIG_INFINIBAND) += core/ obj-$(CONFIG_INFINIBAND) += hw/ obj-$(CONFIG_INFINIBAND) += ulp/ +obj-$(CONFIG_INFINIBAND) += sw/ diff --git a/drivers/infiniband/sw/Makefile b/drivers/infiniband/sw/Makefile new file mode 100644 index 0000000..988b6a0 --- /dev/null +++ b/drivers/infiniband/sw/Makefile @@ -0,0 +1 @@ +obj-$(CONFIG_INFINIBAND_RDMAVT) += rdmavt/ diff --git a/drivers/infiniband/sw/rdmavt/Kconfig b/drivers/infiniband/sw/rdmavt/Kconfig new file mode 100644 index 0000000..11aa6a3 --- /dev/null +++ b/drivers/infiniband/sw/rdmavt/Kconfig @@ -0,0 +1,6 @@ +config INFINIBAND_RDMAVT + tristate "RDMA verbs transport library" + depends on 64BIT + default m + ---help--- + This is a common software verbs provider for RDMA networks. diff --git a/drivers/infiniband/sw/rdmavt/Makefile b/drivers/infiniband/sw/rdmavt/Makefile new file mode 100644 index 0000000..98a664d --- /dev/null +++ b/drivers/infiniband/sw/rdmavt/Makefile @@ -0,0 +1,10 @@ +# +# rdmavt driver +# +# +# +# Called from the kernel module build system. +# +obj-$(CONFIG_INFINIBAND_RDMAVT) += rdmavt.o + +rdmavt-y := vt.o diff --git a/drivers/infiniband/sw/rdmavt/vt.c b/drivers/infiniband/sw/rdmavt/vt.c new file mode 100644 index 0000000..aa325db --- /dev/null +++ b/drivers/infiniband/sw/rdmavt/vt.c @@ -0,0 +1,83 @@ +/* + * Copyright(c) 2015 Intel Corporation. + * + * This file is provided under a dual BSD/GPLv2 license. When using or + * redistributing this file, you may do so under either license. + * + * GPL LICENSE SUMMARY + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * BSD LICENSE + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * - Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include +#include +#include "vt.h" + +MODULE_LICENSE("Dual BSD/GPL"); +MODULE_DESCRIPTION("RDMA Verbs Transport Library"); + +static int rvt_init(void) +{ + /* Do any work needed prior to drivers calling for registration*/ + return 0; +} +module_init(rvt_init); + +static void rvt_cleanup(void) +{ +} +module_exit(rvt_cleanup); + +int rvt_register_device(struct rvt_dev_info *rdi) +{ + if (!rdi) + return -EINVAL; + + return ib_register_device(&rdi->ibdev, rdi->port_callback); +} +EXPORT_SYMBOL(rvt_register_device); + +void rvt_unregister_device(struct rvt_dev_info *rdi) +{ + if (!rdi) + return; + + ib_unregister_device(&rdi->ibdev); +} +EXPORT_SYMBOL(rvt_unregister_device); diff --git a/drivers/infiniband/sw/rdmavt/vt.h b/drivers/infiniband/sw/rdmavt/vt.h new file mode 100644 index 0000000..0a39448 --- /dev/null +++ b/drivers/infiniband/sw/rdmavt/vt.h @@ -0,0 +1,53 @@ +#ifndef DEF_RDMAVT_H +#define DEF_RDMAVT_H + +/* + * Copyright(c) 2015 Intel Corporation. + * + * This file is provided under a dual BSD/GPLv2 license. When using or + * redistributing this file, you may do so under either license. + * + * GPL LICENSE SUMMARY + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * BSD LICENSE + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * - Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include + +#endif /* DEF_RDMAVT_H */ diff --git a/include/rdma/rdma_vt.h b/include/rdma/rdma_vt.h new file mode 100644 index 0000000..0438bf2 --- /dev/null +++ b/include/rdma/rdma_vt.h @@ -0,0 +1,70 @@ +#ifndef DEF_RDMA_VT_H +#define DEF_RDMA_VT_H + +/* + * Copyright(c) 2015 Intel Corporation. + * + * This file is provided under a dual BSD/GPLv2 license. When using or + * redistributing this file, you may do so under either license. + * + * GPL LICENSE SUMMARY + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * BSD LICENSE + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * - Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +/* + * Structure that low level drivers will populate in order to register with the + * rdmavt layer. + */ + +#include "ib_verbs.h" +struct rvt_dev_info { + struct ib_device ibdev; + int (*port_callback)(struct ib_device *, u8, struct kobject *); + + /* + * TODO: + * need to reflect module parameters that may vary by dev + */ +}; + +int rvt_register_device(struct rvt_dev_info *rvd); +void rvt_unregister_device(struct rvt_dev_info *rvd); + +#endif /* DEF_RDMA_VT_H */