From patchwork Wed Sep 20 19:14:33 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: 13393293 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 4773CC04FEF for ; Wed, 20 Sep 2023 19:15:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230189AbjITTQB (ORCPT ); Wed, 20 Sep 2023 15:16:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38716 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230103AbjITTPa (ORCPT ); Wed, 20 Sep 2023 15:15:30 -0400 Received: from mail-pg1-f176.google.com (mail-pg1-f176.google.com [209.85.215.176]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D0FB51AE; Wed, 20 Sep 2023 12:15:03 -0700 (PDT) Received: by mail-pg1-f176.google.com with SMTP id 41be03b00d2f7-577a98f78b2so68823a12.3; Wed, 20 Sep 2023 12:15:03 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1695237303; x=1695842103; 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=QA/PjaHeOPKlW7FQtzoZLIWolXfYYxM5spEj8vLAZfA=; b=LxVtAOZ8NxtfrIvgJFUHpjixapjPpyryZAIul8YCwY4qC9c7WpsmGMMhcLpPkwFy4K sv3TbFWcU4mu+RXirKtoOgwoYw//hGxPbuJNvKq6V7UV76wfnQMgKD8VilHqiZVusztX NgXgH29GQsIjSCXPh12m64s7nUlMOWoYlonUsmVew8c22IHs2068NlQya19pUDT6QKBH EOfZgJwfC3SJI+N10PtDJjAsO2icWsTTBygfZGH0FF75waSwO20tc6WpM5m+ib3Mw+1t VkQutHso2DJtCd55ZXqWGam6/ZJqVNPw3iwGnOPtNIF+34a+kDYJYDWXRqLQtrs0WB3d Af3w== X-Gm-Message-State: AOJu0YyXEsq/W+CyDXeZph70Z/mHdXMPADroZGjrXWx9g7/PEx0BIvVh QYwzqScTsrPZ/JcwG3zMIh4= X-Google-Smtp-Source: AGHT+IGfrJ2VinoDAcFByVozHvKPGFhGdVPk4yu/q4S2g9yuSzTk1jCkDXb7XAlMnVTEM2JePwrsMQ== X-Received: by 2002:a17:90a:694c:b0:274:4b04:392f with SMTP id j12-20020a17090a694c00b002744b04392fmr3242351pjm.24.1695237302760; Wed, 20 Sep 2023 12:15:02 -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.13.2023.09.20.12.15.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 20 Sep 2023 12:15:02 -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 08/13] scsi_debug: Reduce code duplication Date: Wed, 20 Sep 2023 12:14:33 -0700 Message-ID: <20230920191442.3701673-9-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-block@vger.kernel.org All VPD pages have the page code in byte one. Reduce code duplication by storing the VPD page code once. Cc: Martin K. Petersen Cc: Douglas Gilbert Signed-off-by: Bart Van Assche Reviewed-by: Avri Altman --- 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);