From patchwork Wed Oct 26 23:19:30 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Christie X-Patchwork-Id: 13021418 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 83059C433FE for ; Wed, 26 Oct 2022 23:25:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234434AbiJZXZE (ORCPT ); Wed, 26 Oct 2022 19:25:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46646 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233784AbiJZXYl (ORCPT ); Wed, 26 Oct 2022 19:24:41 -0400 Received: from mx0a-00069f02.pphosted.com (mx0a-00069f02.pphosted.com [205.220.165.32]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 928B915747C; Wed, 26 Oct 2022 16:22:12 -0700 (PDT) Received: from pps.filterd (m0246627.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 29QM3G31014699; Wed, 26 Oct 2022 23:19:57 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : content-transfer-encoding : content-type : mime-version; s=corp-2022-7-12; bh=tK+bsy3wrzj0WqmQbPNp+kxYuYFoxLUwKLFSYqtmQ8Y=; b=uF8flnIQxV2AR3ebLwVQgPmCmGlCbShVgjxp8Vmo1BwJnJqkFywfB9WRz7p08/WIfuVC 2FXLZNLEOjlwr0SVDEXNdxrY2lqST5QaI38PAFLiZ2J1Hisk/QDzexyqPqZPV75pusnj F3/Bmj6xwdoG4ihsdXTTo4ifnMCThgn09cEilBTPnllQluflPknGitAdYns/O6RC93bz Vq7B3KVOWY4AX6LqOfv/Q8UOBQdPVdwQrMgLJ8zt6NxFn9Lmyj6jVAJv5ZRsSn9nvULV 6Fj5ZWS4uV1QrLZLm1SwrvH4dYc4lTA2Dt5tj8Obc6oytbNGOLwutpQNWvjkO3cRmAa8 5Q== Received: from phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com (phxpaimrmta03.appoci.oracle.com [138.1.37.129]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 3kfays0jf0-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 26 Oct 2022 23:19:56 +0000 Received: from pps.filterd (phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com [127.0.0.1]) by phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com (8.17.1.5/8.17.1.5) with ESMTP id 29QM7DOA006899; Wed, 26 Oct 2022 23:19:56 GMT Received: from nam04-mw2-obe.outbound.protection.outlook.com (mail-mw2nam04lp2170.outbound.protection.outlook.com [104.47.73.170]) by phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com (PPS) with ESMTPS id 3kfaggdrg5-2 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 26 Oct 2022 23:19:56 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=C3rq0Zx4cYG/xL2iZsMby52Abts9l/SColwzlO02MhKMwUBnUiEnXTWvM9x8Jw7/Aw51AAwQcVRWK2tR/uhIQtvlUi+6+hWKz+HK3wckSDfQs0OZddVp3eDx0yFIwXDN2LlM0UidZP8lucZyJUFs5bOqBkPTG9qzKnJV32tL5rt470KbN9OQCm0n/rUKpZ2YIyxn+zEW1XVUZtzbqWLgSa3JKicZKD9GFuYU2zvEJws4y3owKIL/v1/jF6c5QFJ1v6pUfe1CmKJ7kOCWTiNuWjpB9mypsxu3I7Ru6OFCYxJ6iJBJHXeshrFvTan7BldZ3PKKZRxbSrXgHw8n2WPR3Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; 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=tK+bsy3wrzj0WqmQbPNp+kxYuYFoxLUwKLFSYqtmQ8Y=; b=VjsgwFy04zhuid6+L7Sooor4N4GCRtRYswUyq51lJpO5QCiNY8QkDXSLr/Lpp4CtxSZb0P21j9fmQy63HMfZUzz0DxigdleecducRQI4sl1o/YXAyULOUDn9Ah5B8HnP0U1+KKwWrBChl/5HfJKih/s8DK8QfnkT+7zSwkRPMGT1jjxR1WLFugYoO2a50bQgv5nEL4FZuMr6t7WawyS+9ZNiaQ6ltc9LJb+gf4GaA5F9BAKcZzU7cHCiUWrdybrBgXyK+OgtDvV0MYHyKLDPjxSdc8V1T0huwoSmXmeDYqMLp9wwl01kaeIDdhdSVUxe+9bywOSZZ5VNKCEpHAl4Zw== 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=tK+bsy3wrzj0WqmQbPNp+kxYuYFoxLUwKLFSYqtmQ8Y=; b=lU178mnKqOjH0mzpQC/uS/61I5jCTkqvcOUJFMCfs+CVIxi4iftMK57cGYTCAE0A5D/DeuI/szROOmlkYxWVK3xN1qH5q6OETj/iL9OD5QkUhj5lN38hv6VRYoMcgK3sEbVdcgPmHjG7uSuIP2RLDvwVkQjBvbNzFZyt2LTgKdg= Received: from DM5PR10MB1466.namprd10.prod.outlook.com (2603:10b6:3:b::7) by DS7PR10MB5117.namprd10.prod.outlook.com (2603:10b6:5:3a6::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5746.28; Wed, 26 Oct 2022 23:19:54 +0000 Received: from DM5PR10MB1466.namprd10.prod.outlook.com ([fe80::19f7:e081:85b4:c5df]) by DM5PR10MB1466.namprd10.prod.outlook.com ([fe80::19f7:e081:85b4:c5df%7]) with mapi id 15.20.5746.028; Wed, 26 Oct 2022 23:19:54 +0000 From: Mike Christie To: bvanassche@acm.org, hch@lst.de, martin.petersen@oracle.com, linux-scsi@vger.kernel.org, james.bottomley@hansenpartnership.com, linux-block@vger.kernel.org, dm-devel@redhat.com, snitzer@kernel.org, axboe@kernel.dk, linux-nvme@lists.infradead.org, chaitanyak@nvidia.com, kbusch@kernel.org, target-devel@vger.kernel.org Cc: Mike Christie Subject: [PATCH v3 04/19] scsi: Add support for block PR read keys/reservation Date: Wed, 26 Oct 2022 18:19:30 -0500 Message-Id: <20221026231945.6609-5-michael.christie@oracle.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221026231945.6609-1-michael.christie@oracle.com> References: <20221026231945.6609-1-michael.christie@oracle.com> X-ClientProxiedBy: CH0PR04CA0075.namprd04.prod.outlook.com (2603:10b6:610:74::20) To DM5PR10MB1466.namprd10.prod.outlook.com (2603:10b6:3:b::7) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM5PR10MB1466:EE_|DS7PR10MB5117:EE_ X-MS-Office365-Filtering-Correlation-Id: 4268b3b1-7c2f-47dd-1ec7-08dab7a8973e X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: d3LqOwSGJ2gGy2ILbgz9rxjLBv3cS26OQgehEjXWZRTO+8FXz5bAUqXYh9B+cfaCA+YPT97U66ruu6ZD3sPeg4u0vOTBfF/liJkwdIgr63UZwTe9tLJs2Hq2q/eXjQFpQ4jhlCU6mDu0VBEQbRjfH/Q8/IlCsP0HohHIPkJWQPk9mnTv7LrqIqFylEHbL3AV7Nmd456EGI2y2XvZjIjCYc6yzS2b8ukvAySPVH5qqLTsf/K/gSU2h5UxKz1eg99wISkJ9rEpWsctx/hC0E7iPJxRXmvXxeUwEPneSmOtrsle+1aaXWqlMa9yodeQHU6gqA9XG8I9s0dGRfHNUoyQ9zcBdrrwPNl4GY3n4K8EzH+GqYgjgRtMx2ucx2PphyQRG0u6uy3eCtMdWINZztX9bFgX7Xsd7ujb3GZj0aj+S8nZFcBldJfmEsbv2bgtQrmIdY3B6+10LW9NVgz0wfvxS2HBgKgSC9rd/5/yQALUSKtqUim0dVjFjdw1INgouse2nw2qe7rdeEwRgphtdlTJ24j0Zp4d3BTMx8cQ8MZqo4+SFNWEM6kxWmW5Q7m7RE+fe5LcQBmXBm7Shi5StynIbWRU2WYEHs7pmQNXgxD4fjAfExp95nLV3f7wBQLPD2gOcLyHAWtLfyCz3u4fGYAjif/5CTFlnm4WFboxtTK6gvCKXdektYv/GpqAlOmfgfhHcCKhJJ5Nn5nOzMJJWGhyQiTWDJ71bzBympRwlvOpKe9NKgjBkRlnzmOYDhs6a+X6 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:DM5PR10MB1466.namprd10.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230022)(39860400002)(366004)(136003)(346002)(396003)(376002)(451199015)(7416002)(8936002)(2616005)(1076003)(186003)(5660300002)(6512007)(41300700001)(26005)(86362001)(921005)(38100700002)(2906002)(36756003)(83380400001)(316002)(107886003)(6666004)(4326008)(66556008)(66946007)(66476007)(8676002)(6506007)(478600001)(6486002);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: W+mEVVXEnp0I5EH/A4pg7DyJwrXanlgrPM7XDuoskSXl+ebeeGp27xpHqIO8kno4EPlTbhVSgBdOHymLr7OElchBM4cUeHadCa3pIY4I8hc9HzVP1fXKaMrj0dvh3nritlGfQv0fEQa7I/6PcLG2gvreXtfiSUXtN8AfiP+Ap8RZPa73hYVEE01x9AeUqWdqZIad65fA1XAgboWcOc6inb/a0AMhhKZE3Pa/HzOJLb34xNTrX2x+W3uAc8Kbm5rrBKmAv1RwAh5PwFijhstM0C3t/W4DGsg+CdKysqKz2BRW75HlJ0tBkh2V8g4HobbCX0+ahEV5LJI+aNgojN9BI2ZlwSd4cTJEzt7HaCKGz/vpD1U1b0mrrlKAkplXUxz6Qj4bhq6JW7noFVdqfy2LZeerOG7FFFlApFJYQ2+/T3gWJv5Mai3JTPRYWCfoIdHEIiqDBjuItXN8MdxbrXsm2olv7ihqTfVfMbumOdAK543TapCscMFE2CSEv6Npl5oMjAL7pMjqCW+eIfBAvV+UlDbepMcXzRodNR8eHK6u/8MN/uBG3YL3gsAGPJ+91jpKjki0mzGoVlmoBYDyuocVqUTQpDMi80LqQ5GKAUESONWKTyilClwR9vBegvqIJqCeONn/lKI4fN6M98el8W0gfWMeEQoqaTKy73fsl2yRvW6eU2FlPOoyWTlW3d/Mn7Me97trHX6e0NI7+Ucr0SyIHiZprkcOVABQgJZPXUFqf7EBxfUFypxJoOPqBqsHb2HyhPyFKHh+Jl6ldyj8y+OIpHZvF9y43V6L8TGZTqRSsiK+VPioEbb0ShJPFCHqt5H3MSFONw/QvZatKatGUeErVJ6zLBP3SS0ikFHxCFUNLf+BAxhTdFI//0ArA7OffFjuP2J+hnd//YQ6B6rnXh1HYBpF2a3+Y4ZFV8ojXlmpjuG6WNkE1zMQvE+gy4qxvxuRVghH2XebKzATlcxNcEuzoPYA1QwzOvWRDjW4d+x/3fZqjRzEQK1KuUtnj0QJSBQTpXpLh+ZXgezeOwshWakaRG/tA8TzNshPTfyw04kWXRUmIo4ObXg0sZcOkqbMPdQ4CFtSioWdKFBVM/Qev3ha8XOjItGtBjjZeAMU9S8IgW0yDh6XJTpbLU1nTPBg0jR40yd+cAwqjEWoCbjcjPNLMzcBLNpkcs3+h3zeXuLaY5tLxm+7Ao+yoTJgaFrpbPLfoh/4TIPLdyh3muGFfkWsxrSN9Q+xax/A7zESD5ll1QwzwWt4SD5LPB0OoXwtV+/VQE0he72Ya0Qs7SqdArEKFhXyTpqF6deTvKBm6js30lX6a9gUKTkP4TJgW7QoUn7926SZ8VIeoYam1Xp0lUW8ITEIgWaR4RfstLoWhU6EbRB7sI4bFX56GWTjibADjJZE+KU8W3UTGJQnl7zpfnlSA32Qiw++fY1QhJRyth6NgN93mpZV2YKD1AKuYpHuKOxCYjw51aaSwfZ3P6aYiUAGptEESPa2mBWqDgDWYJpLfFeIimvkZKD2ZFqou4jry3eY2H5nRvcza2EFBftoWE9yHHvsx/nVFq6UZ0rJ59rsMMvKujO6iKh5TzER8GJwu8oVB01bBc9qF+xai/MLzil+zQ== X-OriginatorOrg: oracle.com X-MS-Exchange-CrossTenant-Network-Message-Id: 4268b3b1-7c2f-47dd-1ec7-08dab7a8973e X-MS-Exchange-CrossTenant-AuthSource: DM5PR10MB1466.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 26 Oct 2022 23:19:54.7572 (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: ISDdVSXoIBZYmbyQHpcd1GGOxwwExVEnQUhV/od0D5Ni2t8BQj7M+U6Q/UrrK3xpu4VaZLOjJEmDrDi500dT9uVFPhVZvHzceANB8DGuZ6E= X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS7PR10MB5117 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.895,Hydra:6.0.545,FMLib:17.11.122.1 definitions=2022-10-26_08,2022-10-26_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 malwarescore=0 spamscore=0 suspectscore=0 phishscore=0 adultscore=0 mlxscore=0 mlxlogscore=999 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2210170000 definitions=main-2210260128 X-Proofpoint-ORIG-GUID: _lesu5tDV6ptlLEOxODzWXY3G-xBinMW X-Proofpoint-GUID: _lesu5tDV6ptlLEOxODzWXY3G-xBinMW Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org This adds support in sd.c for the block PR read keys and read reservation callouts. Signed-off-by: Mike Christie --- drivers/scsi/sd.c | 104 +++++++++++++++++++++++++++++++++++ include/scsi/scsi_block_pr.h | 20 +++++++ include/scsi/scsi_proto.h | 5 ++ 3 files changed, 129 insertions(+) diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index ad9374b07585..86b602399000 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -1695,6 +1695,108 @@ static int sd_get_unique_id(struct gendisk *disk, u8 id[16], return ret; } +static int sd_pr_in_command(struct block_device *bdev, u8 sa, + unsigned char *data, int data_len) +{ + struct scsi_disk *sdkp = scsi_disk(bdev->bd_disk); + struct scsi_device *sdev = sdkp->device; + struct scsi_sense_hdr sshdr; + u8 cmd[10] = { PERSISTENT_RESERVE_IN, sa }; + struct scsi_failure failures[] = { + { + .sense = UNIT_ATTENTION, + .asc = SCMD_FAILURE_ASC_ANY, + .ascq = SCMD_FAILURE_ASCQ_ANY, + .allowed = 5, + .result = SAM_STAT_CHECK_CONDITION, + }, + {}, + }; + int result; + + put_unaligned_be16(data_len, &cmd[7]); + + result = scsi_exec_req(((struct scsi_exec_args) { + .sdev = sdev, + .cmd = cmd, + .data_dir = DMA_FROM_DEVICE, + .buf = data, + .buf_len = data_len, + .sshdr = &sshdr, + .timeout = SD_TIMEOUT, + .retries = sdkp->max_retries, + .failures = failures })); + if (scsi_status_is_check_condition(result) && + scsi_sense_valid(&sshdr)) { + sdev_printk(KERN_INFO, sdev, "PR command failed: %d\n", result); + scsi_print_sense_hdr(sdev, NULL, &sshdr); + } + + return result; +} + +static int sd_pr_read_keys(struct block_device *bdev, struct pr_keys *keys_info, + u32 keys_len) +{ + int result, i, data_offset, num_copy_keys; + int data_len = keys_len + 8; + u8 *data; + + data = kzalloc(data_len, GFP_KERNEL); + if (!data) + return -ENOMEM; + + result = sd_pr_in_command(bdev, READ_KEYS, data, data_len); + if (result) + goto free_data; + + keys_info->generation = get_unaligned_be32(&data[0]); + keys_info->num_keys = get_unaligned_be32(&data[4]) / 8; + + data_offset = 8; + num_copy_keys = min(keys_len / 8, keys_info->num_keys); + + for (i = 0; i < num_copy_keys; i++) { + keys_info->keys[i] = get_unaligned_be64(&data[data_offset]); + data_offset += 8; + } + +free_data: + kfree(data); + return result; +} + +static int sd_pr_read_reservation(struct block_device *bdev, + struct pr_held_reservation *rsv) +{ + struct scsi_disk *sdkp = scsi_disk(bdev->bd_disk); + struct scsi_device *sdev = sdkp->device; + u8 data[24] = { 0, }; + int result, len; + + result = sd_pr_in_command(bdev, READ_RESERVATION, data, sizeof(data)); + if (result) + return result; + + memset(rsv, 0, sizeof(*rsv)); + len = get_unaligned_be32(&data[4]); + if (!len) + return result; + + /* Make sure we have at least the key and type */ + if (len < 14) { + sdev_printk(KERN_INFO, sdev, + "READ RESERVATION failed due to short return buffer of %d bytes\n", + len); + return -EINVAL; + } + + rsv->generation = get_unaligned_be32(&data[0]); + rsv->key = get_unaligned_be64(&data[8]); + rsv->type = scsi_pr_type_to_block(data[21] & 0x0f); + return 0; +} + static int sd_pr_out_command(struct block_device *bdev, u8 sa, u64 key, u64 sa_key, enum scsi_pr_type type, u8 flags) { @@ -1787,6 +1889,8 @@ static const struct pr_ops sd_pr_ops = { .pr_release = sd_pr_release, .pr_preempt = sd_pr_preempt, .pr_clear = sd_pr_clear, + .pr_read_keys = sd_pr_read_keys, + .pr_read_reservation = sd_pr_read_reservation, }; static void scsi_disk_free_disk(struct gendisk *disk) diff --git a/include/scsi/scsi_block_pr.h b/include/scsi/scsi_block_pr.h index 6e99f844330d..137bf2247273 100644 --- a/include/scsi/scsi_block_pr.h +++ b/include/scsi/scsi_block_pr.h @@ -33,4 +33,24 @@ static inline enum scsi_pr_type block_pr_type_to_scsi(enum pr_type type) } }; +static inline enum pr_type scsi_pr_type_to_block(enum scsi_pr_type type) +{ + switch (type) { + case SCSI_PR_WRITE_EXCLUSIVE: + return PR_WRITE_EXCLUSIVE; + case SCSI_PR_EXCLUSIVE_ACCESS: + return PR_EXCLUSIVE_ACCESS; + case SCSI_PR_WRITE_EXCLUSIVE_REG_ONLY: + return PR_WRITE_EXCLUSIVE_REG_ONLY; + case SCSI_PR_EXCLUSIVE_ACCESS_REG_ONLY: + return PR_EXCLUSIVE_ACCESS_REG_ONLY; + case SCSI_PR_WRITE_EXCLUSIVE_ALL_REGS: + return PR_WRITE_EXCLUSIVE_ALL_REGS; + case SCSI_PR_EXCLUSIVE_ACCESS_ALL_REGS: + return PR_EXCLUSIVE_ACCESS_ALL_REGS; + default: + return 0; + } +} + #endif diff --git a/include/scsi/scsi_proto.h b/include/scsi/scsi_proto.h index c03e35fc382c..0fd6e295375a 100644 --- a/include/scsi/scsi_proto.h +++ b/include/scsi/scsi_proto.h @@ -151,6 +151,11 @@ #define ZO_FINISH_ZONE 0x02 #define ZO_OPEN_ZONE 0x03 #define ZO_RESET_WRITE_POINTER 0x04 +/* values for PR in service action */ +#define READ_KEYS 0x00 +#define READ_RESERVATION 0x01 +#define REPORT_CAPABILITES 0x02 +#define READ_FULL_STATUS 0x03 /* values for variable length command */ #define XDREAD_32 0x03 #define XDWRITE_32 0x04