From patchwork Tue Dec 19 00:07:45 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: 756802 Received: from mail-pf1-f169.google.com (mail-pf1-f169.google.com [209.85.210.169]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 29D453C00; Tue, 19 Dec 2023 00:08:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=acm.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Received: by mail-pf1-f169.google.com with SMTP id d2e1a72fcca58-6d3165ac96bso1176054b3a.0; Mon, 18 Dec 2023 16:08:56 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1702944536; x=1703549336; 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=fnnL4cR8C+xSU9+oFBLo82Df+WoReU4StMHCaYfa7vk=; b=jEyloCAVtqd3d/CNMsWkdy6y81qLKhf8MEAvZ7AuPnqqXVH8ZpXuITMhqHuLFnV1mJ Eg1tQrwywXaG3xXKSdggzXUC5cM7jrrI1ia8pu8ktQXnuPloC+e5A093SHQrBRonjpBj mp9yED087E2SyE71tB7HzaaB3FSLvwG1OP1zzZ2s5PQjqgRIk/zH65wEPVWeArPTsJRJ s+VSmgqOwGUSAhi/B/y7HxzU/Yle71C8sEKjZ9MhTxVnYZ7FPVoNDpMQqkCPdgBJvhsH ktn8J9clkZDKQZHasoThXSLAKm/U+YzoEN193ljvQwvfynKqujL1sKQts1M3kQYSbQLN AW6A== X-Gm-Message-State: AOJu0Ywfh9k6qAL3gjXlrJKVnhWhcFp9Fj9PFlKtAorbVqn+Nw8yy9zm vHRG7RCE1nhto18Edi812TY= X-Google-Smtp-Source: AGHT+IF6KVOdWl5ZbLB8OJ+Wj1oxW/DoNRKzunvv+TGDT7/BvOaQ850XVRsk3XIk9eOvqVA1mlRNbQ== X-Received: by 2002:a05:6a20:2595:b0:190:d1d2:56fd with SMTP id k21-20020a056a20259500b00190d1d256fdmr7837248pzd.39.1702944536294; Mon, 18 Dec 2023 16:08:56 -0800 (PST) Received: from bvanassche-linux.mtv.corp.google.com ([2620:0:1000:8411:e67:7ba6:36a9:8cd5]) by smtp.gmail.com with ESMTPSA id x17-20020a17090a531100b0028b050e8297sm118630pjh.18.2023.12.18.16.08.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 18 Dec 2023 16:08:55 -0800 (PST) From: Bart Van Assche To: "Martin K . Petersen" Cc: linux-scsi@vger.kernel.org, linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, Jens Axboe , Christoph Hellwig , Daejun Park , Kanchan Joshi , Bart Van Assche , Avri Altman , Douglas Gilbert , "James E.J. Bottomley" Subject: [PATCH v8 12/19] scsi: scsi_debug: Reduce code duplication Date: Mon, 18 Dec 2023 16:07:45 -0800 Message-ID: <20231219000815.2739120-13-bvanassche@acm.org> X-Mailer: git-send-email 2.43.0.472.g3155946c3a-goog In-Reply-To: <20231219000815.2739120-1-bvanassche@acm.org> References: <20231219000815.2739120-1-bvanassche@acm.org> Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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 Tested-by: 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 67922e2c4c19..5cf337ba9c19 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -1909,7 +1909,8 @@ 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) @@ -1920,7 +1921,6 @@ 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 */ @@ -1941,23 +1941,18 @@ 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 */ @@ -1967,30 +1962,23 @@ 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);