From patchwork Mon Dec 18 18:56:38 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: 755853 Received: from mail-pg1-f175.google.com (mail-pg1-f175.google.com [209.85.215.175]) (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 0C79E5BFBC; Mon, 18 Dec 2023 18:57:58 +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-pg1-f175.google.com with SMTP id 41be03b00d2f7-53fa455cd94so1379241a12.2; Mon, 18 Dec 2023 10:57:58 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1702925878; x=1703530678; 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=axWCMvTp0bALUCa2nEe+Ebru41CBfQSiQtkM+jVQ7iM=; b=mnXOF1PFuMGvuvlsOg/NPMd3hC7/zmutxGjcPaxB5fd2Z1EC15wlhStlDGZ4eWxyrD sw3NK7uNX0mzJM/RrSF6kYr7tU0KQ68cGTtv/3r/rKdliBMFmkqnvIHbran81AtfIxrt 79D3McMYKOTHEt2dJp03jL2QaDFDI131glyUSomjGFtKCvsV3IdQiAI+ORCsyHeGw4QO VhUIcN/ipK4QfOdakIH2eypCNezWVGoZLMeyeB4GOS08vu6mjPBFZXS/Ef//SeTAT/rv LC8OFaGT1DOjilkrE/i3j8L3y9RaLD62GnXqQncJWZRmPCKk88/VeX/x5DGaBL1Xk9v+ a/KQ== X-Gm-Message-State: AOJu0Yz7djphNGma/nXyyxuvA3uV5Nt0COEdG3f/g/Rxe9VVYEiYSjmP /ZSC/cu7soaxqTXY+W8dXVE= X-Google-Smtp-Source: AGHT+IHPy+8r2QH9OGV3EUErtbpZ7TvNfhf/vQjwXJSue2zRaPWhosugh61Qs26sr7+1qBl7MK1HMw== X-Received: by 2002:a05:6a20:430f:b0:18f:97c:b9f1 with SMTP id h15-20020a056a20430f00b0018f097cb9f1mr9480216pzk.75.1702925878279; Mon, 18 Dec 2023 10:57:58 -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 n20-20020a056a0007d400b006d45707d8edsm3918397pfu.7.2023.12.18.10.57.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 18 Dec 2023 10:57:57 -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 , Douglas Gilbert , "James E.J. Bottomley" Subject: [PATCH v7 15/19] scsi: scsi_debug: Rework subpage code error handling Date: Mon, 18 Dec 2023 10:56:38 -0800 Message-ID: <20231218185705.2002516-16-bvanassche@acm.org> X-Mailer: git-send-email 2.43.0.472.g3155946c3a-goog In-Reply-To: <20231218185705.2002516-1-bvanassche@acm.org> References: <20231218185705.2002516-1-bvanassche@acm.org> Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Move the subpage code checks into the switch statement to make it easier to add support for new page code / subpage code combinations. Cc: Martin K. Petersen Cc: Douglas Gilbert Tested-by: Douglas Gilbert Signed-off-by: Bart Van Assche --- drivers/scsi/scsi_debug.c | 70 ++++++++++++++++++++------------------- 1 file changed, 36 insertions(+), 34 deletions(-) diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index b646c5320c63..cadd130d6b53 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -2709,22 +2709,22 @@ static int resp_mode_sense(struct scsi_cmnd *scp, ap = arr + offset; } - if ((subpcode > 0x0) && (subpcode < 0xff) && (0x19 != pcode)) { - /* TODO: Control Extension page */ - mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); - return check_condition_result; - } - switch (pcode) { case 0x1: /* Read-Write error recovery page, direct access */ + if (subpcode > 0x0 && subpcode < 0xff) + goto bad_subpcode; len = resp_err_recov_pg(ap, pcontrol, target); offset += len; break; case 0x2: /* Disconnect-Reconnect page, all devices */ + if (subpcode > 0x0 && subpcode < 0xff) + goto bad_subpcode; len = resp_disconnect_pg(ap, pcontrol, target); offset += len; break; case 0x3: /* Format device page, direct access */ + if (subpcode > 0x0 && subpcode < 0xff) + goto bad_subpcode; if (is_disk) { len = resp_format_pg(ap, pcontrol, target); offset += len; @@ -2733,6 +2733,8 @@ static int resp_mode_sense(struct scsi_cmnd *scp, } break; case 0x8: /* Caching page, direct access */ + if (subpcode > 0x0 && subpcode < 0xff) + goto bad_subpcode; if (is_disk || is_zbc) { len = resp_caching_pg(ap, pcontrol, target); offset += len; @@ -2741,14 +2743,14 @@ static int resp_mode_sense(struct scsi_cmnd *scp, } break; case 0xa: /* Control Mode page, all devices */ + if (subpcode > 0x0 && subpcode < 0xff) + goto bad_subpcode; len = resp_ctrl_m_pg(ap, pcontrol, target); offset += len; break; case 0x19: /* if spc==1 then sas phy, control+discover */ - if ((subpcode > 0x2) && (subpcode < 0xff)) { - mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); - return check_condition_result; - } + if (subpcode > 0x2 && subpcode < 0xff) + goto bad_subpcode; len = 0; if ((0x0 == subpcode) || (0xff == subpcode)) len += resp_sas_sf_m_pg(ap + len, pcontrol, target); @@ -2760,35 +2762,31 @@ static int resp_mode_sense(struct scsi_cmnd *scp, offset += len; break; case 0x1c: /* Informational Exceptions Mode page, all devices */ + if (subpcode > 0x0 && subpcode < 0xff) + goto bad_subpcode; len = resp_iec_m_pg(ap, pcontrol, target); offset += len; break; case 0x3f: /* Read all Mode pages */ - if ((0 == subpcode) || (0xff == subpcode)) { - len = resp_err_recov_pg(ap, pcontrol, target); - len += resp_disconnect_pg(ap + len, pcontrol, target); - if (is_disk) { - len += resp_format_pg(ap + len, pcontrol, - target); - len += resp_caching_pg(ap + len, pcontrol, - target); - } else if (is_zbc) { - len += resp_caching_pg(ap + len, pcontrol, - target); - } - len += resp_ctrl_m_pg(ap + len, pcontrol, target); - len += resp_sas_sf_m_pg(ap + len, pcontrol, target); - if (0xff == subpcode) { - len += resp_sas_pcd_m_spg(ap + len, pcontrol, - target, target_dev_id); - len += resp_sas_sha_m_spg(ap + len, pcontrol); - } - len += resp_iec_m_pg(ap + len, pcontrol, target); - offset += len; - } else { - mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); - return check_condition_result; + if (subpcode > 0x0 && subpcode < 0xff) + goto bad_subpcode; + len = resp_err_recov_pg(ap, pcontrol, target); + len += resp_disconnect_pg(ap + len, pcontrol, target); + if (is_disk) { + len += resp_format_pg(ap + len, pcontrol, target); + len += resp_caching_pg(ap + len, pcontrol, target); + } else if (is_zbc) { + len += resp_caching_pg(ap + len, pcontrol, target); + } + len += resp_ctrl_m_pg(ap + len, pcontrol, target); + len += resp_sas_sf_m_pg(ap + len, pcontrol, target); + if (0xff == subpcode) { + len += resp_sas_pcd_m_spg(ap + len, pcontrol, target, + target_dev_id); + len += resp_sas_sha_m_spg(ap + len, pcontrol); } + len += resp_iec_m_pg(ap + len, pcontrol, target); + offset += len; break; default: goto bad_pcode; @@ -2802,6 +2800,10 @@ static int resp_mode_sense(struct scsi_cmnd *scp, bad_pcode: mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, 5); return check_condition_result; + +bad_subpcode: + mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); + return check_condition_result; } #define SDEBUG_MAX_MSELECT_SZ 512