From patchwork Wed Nov 4 22:06:33 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Xiong, Jianxin" X-Patchwork-Id: 11882187 X-Patchwork-Delegate: jgg@ziepe.ca Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id EB9EA139F for ; Wed, 4 Nov 2020 21:52:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D41C620825 for ; Wed, 4 Nov 2020 21:52:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731755AbgKDVwq (ORCPT ); Wed, 4 Nov 2020 16:52:46 -0500 Received: from mga14.intel.com ([192.55.52.115]:38125 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731707AbgKDVwq (ORCPT ); Wed, 4 Nov 2020 16:52:46 -0500 IronPort-SDR: MA1etPBL6yG+Qv9D3JgbxoDE1MzP0sSo9J9WkRY2C+bcLyxMrtRjA6KAyWag3OqvMaW1Jw7PQO 0rFZOJW/Sazw== X-IronPort-AV: E=McAfee;i="6000,8403,9795"; a="168509122" X-IronPort-AV: E=Sophos;i="5.77,451,1596524400"; d="scan'208";a="168509122" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Nov 2020 13:52:45 -0800 IronPort-SDR: kNkjBM+yzVMzwDQObbuwYQHz7c0n4DlDvtQwcwHGfKYxUkzPB1wuTsvN0WV6+ucoAi3LlXfQqo n4wG6TF3PJXg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.77,451,1596524400"; d="scan'208";a="337019393" Received: from cst-dev.jf.intel.com ([10.23.221.69]) by orsmga002.jf.intel.com with ESMTP; 04 Nov 2020 13:52:45 -0800 From: Jianxin Xiong To: linux-rdma@vger.kernel.org, dri-devel@lists.freedesktop.org Cc: Jianxin Xiong , Doug Ledford , Jason Gunthorpe , Leon Romanovsky , Sumit Semwal , Christian Koenig , Daniel Vetter Subject: [PATCH v7 3/5] RDMA/uverbs: Add uverbs command for dma-buf based MR registration Date: Wed, 4 Nov 2020 14:06:33 -0800 Message-Id: <1604527595-39736-4-git-send-email-jianxin.xiong@intel.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1604527595-39736-1-git-send-email-jianxin.xiong@intel.com> References: <1604527595-39736-1-git-send-email-jianxin.xiong@intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org Implement a new uverbs ioctl method for memory registration with file descriptor as an extra parameter. Signed-off-by: Jianxin Xiong Reviewed-by: Sean Hefty Acked-by: Michael J. Ruhl Acked-by: Christian Koenig Acked-by: Daniel Vetter --- drivers/infiniband/core/uverbs_std_types_mr.c | 112 ++++++++++++++++++++++++++ include/uapi/rdma/ib_user_ioctl_cmds.h | 14 ++++ 2 files changed, 126 insertions(+) diff --git a/drivers/infiniband/core/uverbs_std_types_mr.c b/drivers/infiniband/core/uverbs_std_types_mr.c index 9b22bb5..f22e58b 100644 --- a/drivers/infiniband/core/uverbs_std_types_mr.c +++ b/drivers/infiniband/core/uverbs_std_types_mr.c @@ -1,5 +1,6 @@ /* * Copyright (c) 2018, Mellanox Technologies inc. All rights reserved. + * Copyright (c) 2020, Intel Corporation. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU @@ -178,6 +179,85 @@ static int UVERBS_HANDLER(UVERBS_METHOD_QUERY_MR)( return IS_UVERBS_COPY_ERR(ret) ? ret : 0; } +static int UVERBS_HANDLER(UVERBS_METHOD_REG_DMABUF_MR)( + struct uverbs_attr_bundle *attrs) +{ + struct ib_uobject *uobj = + uverbs_attr_get_uobject(attrs, UVERBS_ATTR_REG_DMABUF_MR_HANDLE); + struct ib_pd *pd = + uverbs_attr_get_obj(attrs, UVERBS_ATTR_REG_DMABUF_MR_PD_HANDLE); + struct ib_device *ib_dev = pd->device; + + u64 offset, length, virt_addr; + u32 fd, access_flags; + struct ib_mr *mr; + int ret; + + if (!ib_dev->ops.reg_user_mr_dmabuf) + return -EOPNOTSUPP; + + ret = uverbs_copy_from(&offset, attrs, + UVERBS_ATTR_REG_DMABUF_MR_OFFSET); + if (ret) + return ret; + + ret = uverbs_copy_from(&length, attrs, + UVERBS_ATTR_REG_DMABUF_MR_LENGTH); + if (ret) + return ret; + + ret = uverbs_copy_from(&virt_addr, attrs, + UVERBS_ATTR_REG_DMABUF_MR_IOVA); + if (ret) + return ret; + + ret = uverbs_copy_from(&fd, attrs, + UVERBS_ATTR_REG_DMABUF_MR_FD); + if (ret) + return ret; + + ret = uverbs_get_flags32(&access_flags, attrs, + UVERBS_ATTR_REG_DMABUF_MR_ACCESS_FLAGS, + IB_ACCESS_SUPPORTED); + if (ret) + return ret; + + ret = ib_check_mr_access(access_flags); + if (ret) + return ret; + + mr = pd->device->ops.reg_user_mr_dmabuf(pd, offset, length, virt_addr, + fd, access_flags, + &attrs->driver_udata); + if (IS_ERR(mr)) + return PTR_ERR(mr); + + mr->device = pd->device; + mr->pd = pd; + mr->type = IB_MR_TYPE_USER; + mr->uobject = uobj; + atomic_inc(&pd->usecnt); + + uobj->object = mr; + + ret = uverbs_copy_to(attrs, UVERBS_ATTR_REG_DMABUF_MR_RESP_LKEY, + &mr->lkey, sizeof(mr->lkey)); + if (ret) + goto err_dereg; + + ret = uverbs_copy_to(attrs, UVERBS_ATTR_REG_DMABUF_MR_RESP_RKEY, + &mr->rkey, sizeof(mr->rkey)); + if (ret) + goto err_dereg; + + return 0; + +err_dereg: + ib_dereg_mr_user(mr, uverbs_get_cleared_udata(attrs)); + + return ret; +} + DECLARE_UVERBS_NAMED_METHOD( UVERBS_METHOD_ADVISE_MR, UVERBS_ATTR_IDR(UVERBS_ATTR_ADVISE_MR_PD_HANDLE, @@ -243,6 +323,37 @@ static int UVERBS_HANDLER(UVERBS_METHOD_QUERY_MR)( UVERBS_ATTR_TYPE(u32), UA_MANDATORY)); +DECLARE_UVERBS_NAMED_METHOD( + UVERBS_METHOD_REG_DMABUF_MR, + UVERBS_ATTR_IDR(UVERBS_ATTR_REG_DMABUF_MR_HANDLE, + UVERBS_OBJECT_MR, + UVERBS_ACCESS_NEW, + UA_MANDATORY), + UVERBS_ATTR_IDR(UVERBS_ATTR_REG_DMABUF_MR_PD_HANDLE, + UVERBS_OBJECT_PD, + UVERBS_ACCESS_READ, + UA_MANDATORY), + UVERBS_ATTR_PTR_IN(UVERBS_ATTR_REG_DMABUF_MR_OFFSET, + UVERBS_ATTR_TYPE(u64), + UA_MANDATORY), + UVERBS_ATTR_PTR_IN(UVERBS_ATTR_REG_DMABUF_MR_LENGTH, + UVERBS_ATTR_TYPE(u64), + UA_MANDATORY), + UVERBS_ATTR_PTR_IN(UVERBS_ATTR_REG_DMABUF_MR_IOVA, + UVERBS_ATTR_TYPE(u64), + UA_MANDATORY), + UVERBS_ATTR_PTR_IN(UVERBS_ATTR_REG_DMABUF_MR_FD, + UVERBS_ATTR_TYPE(u32), + UA_MANDATORY), + UVERBS_ATTR_FLAGS_IN(UVERBS_ATTR_REG_DMABUF_MR_ACCESS_FLAGS, + enum ib_access_flags), + UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_REG_DMABUF_MR_RESP_LKEY, + UVERBS_ATTR_TYPE(u32), + UA_MANDATORY), + UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_REG_DMABUF_MR_RESP_RKEY, + UVERBS_ATTR_TYPE(u32), + UA_MANDATORY)); + DECLARE_UVERBS_NAMED_METHOD_DESTROY( UVERBS_METHOD_MR_DESTROY, UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_MR_HANDLE, @@ -253,6 +364,7 @@ static int UVERBS_HANDLER(UVERBS_METHOD_QUERY_MR)( DECLARE_UVERBS_NAMED_OBJECT( UVERBS_OBJECT_MR, UVERBS_TYPE_ALLOC_IDR(uverbs_free_mr), + &UVERBS_METHOD(UVERBS_METHOD_REG_DMABUF_MR), &UVERBS_METHOD(UVERBS_METHOD_DM_MR_REG), &UVERBS_METHOD(UVERBS_METHOD_MR_DESTROY), &UVERBS_METHOD(UVERBS_METHOD_ADVISE_MR), diff --git a/include/uapi/rdma/ib_user_ioctl_cmds.h b/include/uapi/rdma/ib_user_ioctl_cmds.h index 7968a18..dafc7eb 100644 --- a/include/uapi/rdma/ib_user_ioctl_cmds.h +++ b/include/uapi/rdma/ib_user_ioctl_cmds.h @@ -1,5 +1,6 @@ /* * Copyright (c) 2018, Mellanox Technologies inc. All rights reserved. + * Copyright (c) 2020, Intel Corporation. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU @@ -251,6 +252,7 @@ enum uverbs_methods_mr { UVERBS_METHOD_MR_DESTROY, UVERBS_METHOD_ADVISE_MR, UVERBS_METHOD_QUERY_MR, + UVERBS_METHOD_REG_DMABUF_MR, }; enum uverbs_attrs_mr_destroy_ids { @@ -272,6 +274,18 @@ enum uverbs_attrs_query_mr_cmd_attr_ids { UVERBS_ATTR_QUERY_MR_RESP_IOVA, }; +enum uverbs_attrs_reg_dmabuf_mr_cmd_attr_ids { + UVERBS_ATTR_REG_DMABUF_MR_HANDLE, + UVERBS_ATTR_REG_DMABUF_MR_PD_HANDLE, + UVERBS_ATTR_REG_DMABUF_MR_OFFSET, + UVERBS_ATTR_REG_DMABUF_MR_LENGTH, + UVERBS_ATTR_REG_DMABUF_MR_IOVA, + UVERBS_ATTR_REG_DMABUF_MR_FD, + UVERBS_ATTR_REG_DMABUF_MR_ACCESS_FLAGS, + UVERBS_ATTR_REG_DMABUF_MR_RESP_LKEY, + UVERBS_ATTR_REG_DMABUF_MR_RESP_RKEY, +}; + enum uverbs_attrs_create_counters_cmd_attr_ids { UVERBS_ATTR_CREATE_COUNTERS_HANDLE, };