From patchwork Thu Mar 13 05:18:04 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Christie X-Patchwork-Id: 14014341 Received: from mx0b-00069f02.pphosted.com (mx0b-00069f02.pphosted.com [205.220.177.32]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4284B1D5CDE for ; Thu, 13 Mar 2025 05:22:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=205.220.177.32 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741843370; cv=fail; b=I7gua2URa2EnEOYx8uKFx4IBYw59LbQ6no1R1CYO/Dk06GT/cTzgUnvL4828IIoRv6ETkgsXFtBCN3/ut8rbdbBszIj5GxEI8ELSPw4FPCfCuCjuOry5g4YuRvXN+tz7Wi3ROufIAgOYASCol7oJuUl4BRE3Hb6NU3YWlHJMhxA= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741843370; c=relaxed/simple; bh=HFhZx+GqvP0TlkRrQYFVYTtHlZpasAABhLaeglYRCcc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: Content-Type:MIME-Version; b=qn0aSM50Vc9xK3IAKC0KKxb8BYt98NbcrLsqIeg3QpWUcXYG9yFVgKKvAcnJ7yADL83eahpxJrRF/h0g33TY/gYuS/niFSM6ZcIuqkapwISUuYmZ/VgSFbfkIiELqeuVgVO+oFQ9XOndpT6TmSYHre7brlEQ170bM0CwdfkJiD4= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oracle.com; spf=pass smtp.mailfrom=oracle.com; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b=ZBit9rvl; dkim=pass (1024-bit key) header.d=oracle.onmicrosoft.com header.i=@oracle.onmicrosoft.com header.b=PwcZeefz; arc=fail smtp.client-ip=205.220.177.32 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oracle.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oracle.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="ZBit9rvl"; dkim=pass (1024-bit key) header.d=oracle.onmicrosoft.com header.i=@oracle.onmicrosoft.com header.b="PwcZeefz" Received: from pps.filterd (m0333520.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 52D3tjGr008203; Thu, 13 Mar 2025 05:22:33 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=cc :content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s= corp-2023-11-20; bh=1ZZ0IZCL1f7yGfGrQOrKQnJntnKYkDGedUQ3OPYpeJM=; b= ZBit9rvlqBQBWdqYUxDLHynPOOUXrTMt2QjOS9m1bxvqlji3GzsQewcGLMrRfn0a 42yNtCA8jsENtNUTPdMLMsRKYwkCGM7DebgiaZghtgkW+8IBYkkmZReWb5IHNFQn lSZV5cjdIWXWmfDDXWnBZWC8O5vAEjQ/q1y4cb9/zrOpq9bXS2+L2fYt4Uf3I7YM +a7DWoO0mvavBtACeEH4LGoq4jMirFKFGM3IOeImiQ38b6dVWVKMyKAgBhjBf8Pc 30CErXKy/fCG9oGVsayTfbhXtGEDhK0tpRUq3yYBp3KvocMqqr7nkRSYEeQHBMhQ 5ZeBGGhWnJ+w47uKsmPtnw== Received: from phxpaimrmta02.imrmtpd1.prodappphxaev1.oraclevcn.com (phxpaimrmta02.appoci.oracle.com [147.154.114.232]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 45au4duffc-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 13 Mar 2025 05:22:33 +0000 (GMT) Received: from pps.filterd (phxpaimrmta02.imrmtpd1.prodappphxaev1.oraclevcn.com [127.0.0.1]) by phxpaimrmta02.imrmtpd1.prodappphxaev1.oraclevcn.com (8.18.1.2/8.18.1.2) with ESMTP id 52D4RGLc022384; Thu, 13 Mar 2025 05:22:32 GMT Received: from nam10-dm6-obe.outbound.protection.outlook.com (mail-dm6nam10lp2041.outbound.protection.outlook.com [104.47.58.41]) by phxpaimrmta02.imrmtpd1.prodappphxaev1.oraclevcn.com (PPS) with ESMTPS id 45atmw5mpy-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 13 Mar 2025 05:22:32 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=UsMmXEHeOWgnjALvi3Vw6cV18ZImoqZj5y+/XulTnY+iDDXeu7oXzOSPphzI41el5TzLM94P9IW7891wzdma1uqi9/7Ea5/cUue144SVC1Diga3MUI20lD+SJPjOyoir7447Og4f1Wk1nT4ejGoCQgLaNxNna3cKallc8s8m+ZzpE0nH8O3ICLX7rNg5/6uKvDZGVoFeqJFPBNrZ0wfQEqSMblKkerH4Olu6Sgr30wViKuSBBvEF7lfAAvGyHHn8o9YgNqY9rOhvDJlQ0ksi1s9Vph2vIFUuCT4sJAPcGXw8m+wrdR70MBQJmIs1d5A8LVUkoMrczDMc2IyTstfZWw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=1ZZ0IZCL1f7yGfGrQOrKQnJntnKYkDGedUQ3OPYpeJM=; b=d3lTY9oIpq+fvoOnTGG3dWbpe51leYOpDDZHRBOAISozY/VPBjGehJAYUdRXozIR7E9JKP1WAL5piouxDpTZ+gGBlLXL8MQt9JVey3tyClhHgi0GzN9NfhTldNwy6s6GZQIEUppCOvrJS6sEmAm/D5dW04IjM40viGpfpuK2XgYggPHzHEZcCws+XL3YWBDus8ROLLNw6VK7kdJjCTWwz78Y00B6xOuIvFiYpTUi5pUB/T/GnjUWd7sODDmF+DpVTZlhKV1cz5atG/AIu2tNJOVurFWiEmFj2ujzMbQiDqtUREYoP8CxvYkjTCUfg7cEFNgN1fLFCrDYcIFC387O5g== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=oracle.com; dmarc=pass action=none header.from=oracle.com; dkim=pass header.d=oracle.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.onmicrosoft.com; s=selector2-oracle-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=1ZZ0IZCL1f7yGfGrQOrKQnJntnKYkDGedUQ3OPYpeJM=; b=PwcZeefzQJGmAXHkmoIiAG9tEbE0lKcnz+GR3KChfNG8kegonSrNciPGSGx1Lmvhmn9F2EZtQapfFXkqNOqWAUtDmhfmYNCipHBY4gz1YRedHUJdiDPCNxsUYaJPiAc+LNf0LVo7s1HwMu3YqQdQCevbVaES4ARcaDewsahkTrM= Received: from CY8PR10MB7243.namprd10.prod.outlook.com (2603:10b6:930:7c::10) by IA0PR10MB6724.namprd10.prod.outlook.com (2603:10b6:208:43e::5) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8511.27; Thu, 13 Mar 2025 05:22:30 +0000 Received: from CY8PR10MB7243.namprd10.prod.outlook.com ([fe80::b779:d0be:9e3a:34f0]) by CY8PR10MB7243.namprd10.prod.outlook.com ([fe80::b779:d0be:9e3a:34f0%4]) with mapi id 15.20.8511.026; Thu, 13 Mar 2025 05:22:29 +0000 From: Mike Christie To: chaitanyak@nvidia.com, kbusch@kernel.org, hch@lst.de, sagi@grimberg.me, joao.m.martins@oracle.com, linux-nvme@lists.infradead.org, kvm@vger.kernel.org, kwankhede@nvidia.com, alex.williamson@redhat.com, mlevitsk@redhat.com Cc: Mike Christie Subject: [PATCH RFC 03/11] nvmet: Add nvmet_fabrics_ops flag to indicate SGLs not supported Date: Thu, 13 Mar 2025 00:18:04 -0500 Message-ID: <20250313052222.178524-4-michael.christie@oracle.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250313052222.178524-1-michael.christie@oracle.com> References: <20250313052222.178524-1-michael.christie@oracle.com> X-ClientProxiedBy: CH0PR13CA0012.namprd13.prod.outlook.com (2603:10b6:610:b1::17) To CY8PR10MB7243.namprd10.prod.outlook.com (2603:10b6:930:7c::10) Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY8PR10MB7243:EE_|IA0PR10MB6724:EE_ X-MS-Office365-Filtering-Correlation-Id: a1baa92c-73aa-4239-ca59-08dd61ef0cf0 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|366016|1800799024|921020; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:CY8PR10MB7243.namprd10.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(376014)(366016)(1800799024)(921020);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-MS-Exchange-AntiSpam-ExternalHop-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-ExternalHop-MessageData-0: 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 X-OriginatorOrg: oracle.com X-MS-Exchange-CrossTenant-Network-Message-Id: a1baa92c-73aa-4239-ca59-08dd61ef0cf0 X-MS-Exchange-CrossTenant-AuthSource: CY8PR10MB7243.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Mar 2025 05:22:29.9494 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 4e2c6054-71cb-48f1-bd6c-3a9705aca71b X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 99/MjLhAJe5Q8dCI2YdFSk7vJmvW66Nwx9cfoEc2Zp8K0gLl3SB+D8jZFKJ14BzFpM3WbnLkiawJabLRY06mvgXhE3h4XbNOdhC3oflX40c= X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA0PR10MB6724 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1093,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2025-03-13_02,2025-03-11_02,2024-11-22_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 malwarescore=0 phishscore=0 mlxscore=0 spamscore=0 mlxlogscore=999 bulkscore=0 adultscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2502280000 definitions=main-2503130040 X-Proofpoint-ORIG-GUID: 8QU0jSUWpEU1ruOegEw8jGFCnz43NgtW X-Proofpoint-GUID: 8QU0jSUWpEU1ruOegEw8jGFCnz43NgtW The nvmet_mdev_pci driver does not initially support SGLs. In some prelim testing I don't think there will be a perf gain (the virt related interface may be the major bottleneck so I may not notice) so I wasn't sure if they will be required/needed. This adds a nvmet_fabrics_ops flag so we can tell nvmet core to tell the host we do not supports SGLS. Signed-off-by: Mike Christie --- drivers/nvme/target/admin-cmd.c | 13 +++++++------ drivers/nvme/target/nvmet.h | 1 + 2 files changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/nvme/target/admin-cmd.c b/drivers/nvme/target/admin-cmd.c index acc138bbf8f2..486ed6f7b717 100644 --- a/drivers/nvme/target/admin-cmd.c +++ b/drivers/nvme/target/admin-cmd.c @@ -755,12 +755,13 @@ static void nvmet_execute_identify_ctrl(struct nvmet_req *req) id->awun = 0; id->awupf = 0; - /* we always support SGLs */ - id->sgls = cpu_to_le32(NVME_CTRL_SGLS_BYTE_ALIGNED); - if (ctrl->ops->flags & NVMF_KEYED_SGLS) - id->sgls |= cpu_to_le32(NVME_CTRL_SGLS_KSDBDS); - if (req->port->inline_data_size) - id->sgls |= cpu_to_le32(NVME_CTRL_SGLS_SAOS); + if (!(ctrl->ops->flags & NVMF_SGLS_NOT_SUPP)) { + id->sgls = cpu_to_le32(NVME_CTRL_SGLS_BYTE_ALIGNED); + if (ctrl->ops->flags & NVMF_KEYED_SGLS) + id->sgls |= cpu_to_le32(NVME_CTRL_SGLS_KSDBDS); + if (req->port->inline_data_size) + id->sgls |= cpu_to_le32(NVME_CTRL_SGLS_SAOS); + } strscpy(id->subnqn, ctrl->subsys->subsysnqn, sizeof(id->subnqn)); diff --git a/drivers/nvme/target/nvmet.h b/drivers/nvme/target/nvmet.h index fcf4f460dc9a..ec3d10eb316a 100644 --- a/drivers/nvme/target/nvmet.h +++ b/drivers/nvme/target/nvmet.h @@ -403,6 +403,7 @@ struct nvmet_fabrics_ops { unsigned int flags; #define NVMF_KEYED_SGLS (1 << 0) #define NVMF_METADATA_SUPPORTED (1 << 1) +#define NVMF_SGLS_NOT_SUPP (1 << 2) void (*queue_response)(struct nvmet_req *req); int (*add_port)(struct nvmet_port *port); void (*remove_port)(struct nvmet_port *port);