From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.3 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,UPPERCASE_50_75,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 672E4C433E0 for ; Tue, 16 Jun 2020 10:58:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 427E0207C4 for ; Tue, 16 Jun 2020 10:58:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592305129; bh=8dHtFT+Xgsn5PoproOlb+NrrHko3XMgogqG/ThGrTRs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=y8iZ8joJ+LSvNLh5DEfnKRCjHwdqAb00ic3NRB5tGppuAEiPIpQrEE+569ve3O7Wq 169I6y+EgZaZO7xFhm379GHpeVTLs+vszcByPNaprSWj9YwFRhQ8abV6wS5JYDac5i cboBiK8eussIU3g8wvN6k/dZYeTH3uakSCUGNDCI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728176AbgFPK6s (ORCPT ); Tue, 16 Jun 2020 06:58:48 -0400 Received: from mail.kernel.org ([198.145.29.99]:37762 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728217AbgFPK6r (ORCPT ); Tue, 16 Jun 2020 06:58:47 -0400 Received: from localhost (unknown [213.57.247.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 685DC20786; Tue, 16 Jun 2020 10:58:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592305127; bh=8dHtFT+Xgsn5PoproOlb+NrrHko3XMgogqG/ThGrTRs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=zKGJ956oSgCx5Z75BSW9cqbODa4Tco1C7PA88m/Yg3pTQAaTyVzQyvg9kVEdJ/veG yteTgTkNQqVF5oWC8+uJnQarPp0sgxg1eBxF/59wZZZlfy9F0zGt7U2N/trqn9SJOK XtcNu6x9DuSvhP8Eke0wRLauj4ffWl7BZv/nYkXo= From: Leon Romanovsky To: Doug Ledford , Jason Gunthorpe Cc: Yishai Hadas , linux-rdma@vger.kernel.org Subject: [PATCH rdma-next 7/7] IB/uverbs: Expose KABI to query MR Date: Tue, 16 Jun 2020 13:55:31 +0300 Message-Id: <20200616105531.2428010-8-leon@kernel.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200616105531.2428010-1-leon@kernel.org> References: <20200616105531.2428010-1-leon@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org From: Yishai Hadas Expose KABI to query MR, this will let user space application that didn't allocate the MR but has access to by owning the matching command FD to retrieve its information. Signed-off-by: Yishai Hadas Signed-off-by: Leon Romanovsky --- drivers/infiniband/core/uverbs_std_types_mr.c | 50 ++++++++++++++++++- include/uapi/rdma/ib_user_ioctl_cmds.h | 9 ++++ 2 files changed, 58 insertions(+), 1 deletion(-) diff --git a/drivers/infiniband/core/uverbs_std_types_mr.c b/drivers/infiniband/core/uverbs_std_types_mr.c index a2722ef8496e..f6763151fbcd 100644 --- a/drivers/infiniband/core/uverbs_std_types_mr.c +++ b/drivers/infiniband/core/uverbs_std_types_mr.c @@ -148,6 +148,34 @@ static int UVERBS_HANDLER(UVERBS_METHOD_DM_MR_REG)( return ret; } +static int UVERBS_HANDLER(UVERBS_METHOD_QUERY_MR)( + struct uverbs_attr_bundle *attrs) +{ + struct ib_mr *mr = + uverbs_attr_get_obj(attrs, UVERBS_ATTR_QUERY_MR_HANDLE); + int ret; + + ret = uverbs_copy_to(attrs, UVERBS_ATTR_QUERY_MR_RESP_LKEY, &mr->lkey, + sizeof(mr->lkey)); + if (ret) + return ret; + + ret = uverbs_copy_to(attrs, UVERBS_ATTR_QUERY_MR_RESP_RKEY, + &mr->rkey, sizeof(mr->rkey)); + + if (ret) + return ret; + + ret = uverbs_copy_to(attrs, UVERBS_ATTR_QUERY_MR_RESP_LENGTH, + &mr->length, sizeof(mr->length)); + + if (ret) + return ret; + + return uverbs_copy_to(attrs, UVERBS_ATTR_QUERY_MR_RESP_IOVA, + &mr->iova, sizeof(mr->iova)); +} + DECLARE_UVERBS_NAMED_METHOD( UVERBS_METHOD_ADVISE_MR, UVERBS_ATTR_IDR(UVERBS_ATTR_ADVISE_MR_PD_HANDLE, @@ -165,6 +193,25 @@ DECLARE_UVERBS_NAMED_METHOD( UA_MANDATORY, UA_ALLOC_AND_COPY)); +DECLARE_UVERBS_NAMED_METHOD( + UVERBS_METHOD_QUERY_MR, + UVERBS_ATTR_IDR(UVERBS_ATTR_QUERY_MR_HANDLE, + UVERBS_OBJECT_MR, + UVERBS_ACCESS_READ, + UA_MANDATORY), + UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_QUERY_MR_RESP_RKEY, + UVERBS_ATTR_TYPE(u32), + UA_MANDATORY), + UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_QUERY_MR_RESP_LKEY, + UVERBS_ATTR_TYPE(u32), + UA_MANDATORY), + UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_QUERY_MR_RESP_LENGTH, + UVERBS_ATTR_TYPE(u64), + UA_MANDATORY), + UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_QUERY_MR_RESP_IOVA, + UVERBS_ATTR_TYPE(u64), + UA_MANDATORY)); + DECLARE_UVERBS_NAMED_METHOD( UVERBS_METHOD_DM_MR_REG, UVERBS_ATTR_IDR(UVERBS_ATTR_REG_DM_MR_HANDLE, @@ -206,7 +253,8 @@ DECLARE_UVERBS_NAMED_OBJECT( UVERBS_TYPE_ALLOC_IDR(uverbs_free_mr), &UVERBS_METHOD(UVERBS_METHOD_DM_MR_REG), &UVERBS_METHOD(UVERBS_METHOD_MR_DESTROY), - &UVERBS_METHOD(UVERBS_METHOD_ADVISE_MR)); + &UVERBS_METHOD(UVERBS_METHOD_ADVISE_MR), + &UVERBS_METHOD(UVERBS_METHOD_QUERY_MR)); const struct uapi_definition uverbs_def_obj_mr[] = { UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_MR, diff --git a/include/uapi/rdma/ib_user_ioctl_cmds.h b/include/uapi/rdma/ib_user_ioctl_cmds.h index 83b6e71ea216..99dcabf61a71 100644 --- a/include/uapi/rdma/ib_user_ioctl_cmds.h +++ b/include/uapi/rdma/ib_user_ioctl_cmds.h @@ -248,6 +248,7 @@ enum uverbs_methods_mr { UVERBS_METHOD_DM_MR_REG, UVERBS_METHOD_MR_DESTROY, UVERBS_METHOD_ADVISE_MR, + UVERBS_METHOD_QUERY_MR, }; enum uverbs_attrs_mr_destroy_ids { @@ -261,6 +262,14 @@ enum uverbs_attrs_advise_mr_cmd_attr_ids { UVERBS_ATTR_ADVISE_MR_SGE_LIST, }; +enum uverbs_attrs_query_mr_cmd_attr_ids { + UVERBS_ATTR_QUERY_MR_HANDLE, + UVERBS_ATTR_QUERY_MR_RESP_LKEY, + UVERBS_ATTR_QUERY_MR_RESP_RKEY, + UVERBS_ATTR_QUERY_MR_RESP_LENGTH, + UVERBS_ATTR_QUERY_MR_RESP_IOVA, +}; + enum uverbs_attrs_create_counters_cmd_attr_ids { UVERBS_ATTR_CREATE_COUNTERS_HANDLE, }; -- 2.26.2