From patchwork Tue Oct 17 20:47:16 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: 13426077 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 D21F3CDB483 for ; Tue, 17 Oct 2023 20:48:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344263AbjJQUse (ORCPT ); Tue, 17 Oct 2023 16:48:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45800 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344267AbjJQUsb (ORCPT ); Tue, 17 Oct 2023 16:48:31 -0400 Received: from mail-pf1-f181.google.com (mail-pf1-f181.google.com [209.85.210.181]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 97FFE10A; Tue, 17 Oct 2023 13:48:29 -0700 (PDT) Received: by mail-pf1-f181.google.com with SMTP id d2e1a72fcca58-6b87c1edfd5so3073246b3a.1; Tue, 17 Oct 2023 13:48:29 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697575709; x=1698180509; 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=y+MAWTVMOc62bHJcXIWIdTiq/rQINfWWQsJrgwniqu0=; b=W8sYdSXjfsxUKuH2zyBrymOKUZORr6Ec0IOdQTFo/6C+ejec2Eu4NG8LwzNdpaxOh+ aSTmJQPteUCm2iKJCIKYGUxMYv5yNKMAhq7tdJXLjcorXmF8g/BTrfKp7o4KWg5bpBTX uiVv9gpm3X+VLD2q6fxjZTdAkJE4WlllKIMzxcHCMKNoSESURj8u8sUfSP15W9DAxZZM tWT2MPbHNa4MfH2ZavR1wjPaK7OtbfPvOCsc0hAPV99H9Gc/+EsL4FHr4QB6TwQyaKn3 K27lcttLtBT3jkDQgIP5YB4Ip7ZG3d2tYM/GKKyC87zZ3WrFteeUKn/sG8tDAji56pM7 KO8g== X-Gm-Message-State: AOJu0Yyyz8euZcvR7+2c9AerIa3GPjcSuMqJlPKyS2tmbV14azQOw8KO ODLGK/Y2PoPD2G/UxvMGPNI= X-Google-Smtp-Source: AGHT+IE5YudWJEC7u99kPshKCLRdfNd5U9itIKpcJ7NpJ+wtlHFneKhLU/UBFZhljuedidatO7udJQ== X-Received: by 2002:aa7:88cf:0:b0:690:3b59:cc7b with SMTP id k15-20020aa788cf000000b006903b59cc7bmr3445223pff.32.1697575708846; Tue, 17 Oct 2023 13:48:28 -0700 (PDT) Received: from bvanassche-linux.mtv.corp.google.com ([2620:15c:211:201:8f02:2919:9600:ac09]) by smtp.gmail.com with ESMTPSA id fa36-20020a056a002d2400b006b2e07a6235sm1874704pfb.136.2023.10.17.13.48.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 17 Oct 2023 13:48:28 -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 , Niklas Cassel , Avri Altman , Bean Huo , Daejun Park , Bart Van Assche , Avri Altman , Douglas Gilbert , "James E.J. Bottomley" Subject: [PATCH v3 08/14] scsi_debug: Reduce code duplication Date: Tue, 17 Oct 2023 13:47:16 -0700 Message-ID: <20231017204739.3409052-9-bvanassche@acm.org> X-Mailer: git-send-email 2.42.0.655.g421f12c284-goog In-Reply-To: <20231017204739.3409052-1-bvanassche@acm.org> References: <20231017204739.3409052-1-bvanassche@acm.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org All VPD pages have the page code in byte one. Reduce code duplication by storing the VPD page code once. Reviewed-by: Avri Altman Cc: Martin K. Petersen Cc: Douglas Gilbert Signed-off-by: Bart Van Assche --- drivers/scsi/scsi_debug.c | 16 ++-------------- 1 file changed, 2 insertions(+), 14 deletions(-) diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index 9c0af50501f9..46eaa2f9e63b 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -1598,7 +1598,8 @@ static int resp_inquiry(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) u32 len; char lu_id_str[6]; int host_no = devip->sdbg_host->shost->host_no; - + + arr[1] = cmd[2]; port_group_id = (((host_no + 1) & 0x7f) << 8) + (devip->channel & 0x7f); if (sdebug_vpd_use_hostno == 0) @@ -1609,7 +1610,6 @@ static int resp_inquiry(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) (devip->target * 1000) - 3; len = scnprintf(lu_id_str, 6, "%d", lu_id_num); if (0 == cmd[2]) { /* supported vital product data pages */ - arr[1] = cmd[2]; /*sanity */ n = 4; arr[n++] = 0x0; /* this page */ arr[n++] = 0x80; /* unit serial number */ @@ -1630,23 +1630,18 @@ static int resp_inquiry(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) } arr[3] = n - 4; /* number of supported VPD pages */ } else if (0x80 == cmd[2]) { /* unit serial number */ - arr[1] = cmd[2]; /*sanity */ arr[3] = len; memcpy(&arr[4], lu_id_str, len); } else if (0x83 == cmd[2]) { /* device identification */ - arr[1] = cmd[2]; /*sanity */ arr[3] = inquiry_vpd_83(&arr[4], port_group_id, target_dev_id, lu_id_num, lu_id_str, len, &devip->lu_name); } else if (0x84 == cmd[2]) { /* Software interface ident. */ - arr[1] = cmd[2]; /*sanity */ arr[3] = inquiry_vpd_84(&arr[4]); } else if (0x85 == cmd[2]) { /* Management network addresses */ - arr[1] = cmd[2]; /*sanity */ arr[3] = inquiry_vpd_85(&arr[4]); } else if (0x86 == cmd[2]) { /* extended inquiry */ - arr[1] = cmd[2]; /*sanity */ arr[3] = 0x3c; /* number of following entries */ if (sdebug_dif == T10_PI_TYPE3_PROTECTION) arr[4] = 0x4; /* SPT: GRD_CHK:1 */ @@ -1656,30 +1651,23 @@ static int resp_inquiry(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) arr[4] = 0x0; /* no protection stuff */ arr[5] = 0x7; /* head of q, ordered + simple q's */ } else if (0x87 == cmd[2]) { /* mode page policy */ - arr[1] = cmd[2]; /*sanity */ arr[3] = 0x8; /* number of following entries */ arr[4] = 0x2; /* disconnect-reconnect mp */ arr[6] = 0x80; /* mlus, shared */ arr[8] = 0x18; /* protocol specific lu */ arr[10] = 0x82; /* mlus, per initiator port */ } else if (0x88 == cmd[2]) { /* SCSI Ports */ - arr[1] = cmd[2]; /*sanity */ arr[3] = inquiry_vpd_88(&arr[4], target_dev_id); } else if (is_disk_zbc && 0x89 == cmd[2]) { /* ATA info */ - arr[1] = cmd[2]; /*sanity */ n = inquiry_vpd_89(&arr[4]); put_unaligned_be16(n, arr + 2); } else if (is_disk_zbc && 0xb0 == cmd[2]) { /* Block limits */ - arr[1] = cmd[2]; /*sanity */ arr[3] = inquiry_vpd_b0(&arr[4]); } else if (is_disk_zbc && 0xb1 == cmd[2]) { /* Block char. */ - arr[1] = cmd[2]; /*sanity */ arr[3] = inquiry_vpd_b1(devip, &arr[4]); } else if (is_disk && 0xb2 == cmd[2]) { /* LB Prov. */ - arr[1] = cmd[2]; /*sanity */ arr[3] = inquiry_vpd_b2(&arr[4]); } else if (is_zbc && cmd[2] == 0xb6) { /* ZB dev. charact. */ - arr[1] = cmd[2]; /*sanity */ arr[3] = inquiry_vpd_b6(devip, &arr[4]); } else { mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, -1);