From patchwork Wed Sep 20 19:14:34 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bart Van Assche X-Patchwork-Id: 13393311 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 3CA2CC04FF7 for ; Wed, 20 Sep 2023 19:15:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230101AbjITTQD (ORCPT ); Wed, 20 Sep 2023 15:16:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38778 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230117AbjITTPb (ORCPT ); Wed, 20 Sep 2023 15:15:31 -0400 Received: from mail-pg1-f171.google.com (mail-pg1-f171.google.com [209.85.215.171]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 309DD12B; Wed, 20 Sep 2023 12:15:05 -0700 (PDT) Received: by mail-pg1-f171.google.com with SMTP id 41be03b00d2f7-578af21ff50so74735a12.1; Wed, 20 Sep 2023 12:15:05 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1695237304; x=1695842104; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Ii59m5xCTgqg6QGOg5WM7rjN4QDexfLB+c1iYtMG1tY=; b=f+s85tO6nyvrkX4uY5WlCN1gfZARAl60KJoHBrVcoBSpAEw1+Zxg8oMYmVxZ8tQiMd LHPE1D0AgggK+qtQ5H3jAhAwecVLXZQciXLNNeWdogL4oSaWq8ViCA0j4+0yexEggs5u 1bLrBAJBIDPods5kZ0qfuGrLf0wkTLfWRalvAVloxeEo8L4UjFyWhBhUlwn/67njgE9U JA4QiJ2/509yJIGJ1M6NVtnkesx3prHBNM4AEkZvRdJYtcp+IF05KGOXBeg20t4B+Buf U4aguVJdeyqpsJITq51BsYl84Yo2+fO51QwFdbfWrFHllhP1THlqJWAbQ9Fi/+ryFvAi sTfg== X-Gm-Message-State: AOJu0YzwRyfahXzOsrBBYK7dO3sSREeJVPIWoREEdjyHMuzbOJHZ30ks Nrg6vDdFceeoNJDo7xpZ8u+cKIilR+U= X-Google-Smtp-Source: AGHT+IGnl8fl04A/u2Kl+h68BofUj59vmffs7DzUnShI5+0eIC/esjoh/k27+KIHe80wGc1KEqXRRg== X-Received: by 2002:a17:90b:1b03:b0:26b:4ce1:9705 with SMTP id nu3-20020a17090b1b0300b0026b4ce19705mr3667816pjb.38.1695237304194; Wed, 20 Sep 2023 12:15:04 -0700 (PDT) Received: from bvanassche-linux.mtv.corp.google.com ([2620:15c:211:201:b0c6:e5b6:49ef:e0bd]) by smtp.gmail.com with ESMTPSA id a13-20020a17090a8c0d00b002633fa95ac2sm1656318pjo.13.2023.09.20.12.15.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 20 Sep 2023 12:15:03 -0700 (PDT) From: Bart Van Assche To: Jens Axboe Cc: linux-block@vger.kernel.org, linux-scsi@vger.kernel.org, linux-fsdevel@vger.kernel.org, "Martin K . Petersen" , Christoph Hellwig , Bart Van Assche , Douglas Gilbert , "James E.J. Bottomley" Subject: [PATCH 09/13] scsi_debug: Support the block limits extension VPD page Date: Wed, 20 Sep 2023 12:14:34 -0700 Message-ID: <20230920191442.3701673-10-bvanassche@acm.org> X-Mailer: git-send-email 2.42.0.459.ge4e396fd5e-goog In-Reply-To: <20230920191442.3701673-1-bvanassche@acm.org> References: <20230920191442.3701673-1-bvanassche@acm.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From T10 document 23-024r3.pdf: "Reduced stream control: a) reduces the maximum number of streams that the device server supports; and b) increases the number of write commands that are able to specify a stream to be written in any write command that contains the GROUP NUMBER field in its CDB. If the RSCS bit (see 6.6.5) is set to one, then the device server shall: a) support per group stream identifier usage as described in 4.32.2; b) support the IO Advice Hints Grouping mode page (see 6.5.7); and c) set the MAXIMUM NUMBER OF STREAMS field (see 6.6.5) to a value that is less than 64. Device servers that set the RSCS bit to one may support other features (e.g., permanent streams (see 4.32.4)). 4.32.4 Permanent streams A permanent stream is a stream for which the device server does not allow closing or otherwise modifying the configuration of that stream. The PERM bit (see 5.9.2.3) indicates whether a stream is a permanent stream. If a STREAM CONTROL command (see 5.32) specifies the closing of a permanent stream, the device server terminates that command with CHECK CONDITION status instead of closing the specified stream. A permanent stream is always an open stream. Device severs should assign the lowest numbered stream identifiers to permanent streams." Report that reduced stream control is supported. Cc: Martin K. Petersen Cc: Douglas Gilbert Signed-off-by: Bart Van Assche --- drivers/scsi/scsi_debug.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index 46eaa2f9e63b..88cba9374166 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -1627,6 +1627,7 @@ static int resp_inquiry(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) arr[n++] = 0xb2; /* LB Provisioning */ if (is_zbc) arr[n++] = 0xb6; /* ZB dev. char. */ + arr[n++] = 0xb7; /* Block limits extension */ } arr[3] = n - 4; /* number of supported VPD pages */ } else if (0x80 == cmd[2]) { /* unit serial number */ @@ -1669,6 +1670,9 @@ static int resp_inquiry(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) arr[3] = inquiry_vpd_b2(&arr[4]); } else if (is_zbc && cmd[2] == 0xb6) { /* ZB dev. charact. */ arr[3] = inquiry_vpd_b6(devip, &arr[4]); + } else if (cmd[2] == 0xb7) { /* block limits extension page */ + arr[3] = 2; /* page length */ + arr[5] = 1; /* Reduced stream control support (RSCS) */ } else { mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, -1); kfree(arr);