From patchwork Mon Jun 28 15:15:57 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Wilck X-Patchwork-Id: 12348219 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 008A9C2B9F4 for ; Mon, 28 Jun 2021 15:20:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E762F61941 for ; Mon, 28 Jun 2021 15:20:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236667AbhF1PWe (ORCPT ); Mon, 28 Jun 2021 11:22:34 -0400 Received: from smtp-out2.suse.de ([195.135.220.29]:60708 "EHLO smtp-out2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237522AbhF1PTs (ORCPT ); Mon, 28 Jun 2021 11:19:48 -0400 Received: from imap.suse.de (imap-alt.suse-dmz.suse.de [192.168.254.47]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 547F8202CF; Mon, 28 Jun 2021 15:17:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1624893440; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=7KvlQelyZAIFCVw+L5VIZwe1M62unzloaolfynp7t2M=; b=enZ32PtaxsqQWfh9XGddOhSIr7IOT9knlyXySuo4TlJoQntXCJRyVIQurGF1/Q+OY466CM u/tBoLVd87qPlKKvA4SBdrR6LSsdphhh7gAWTO7fSeF/+NrYEIKaxXX5RTfETY3BPHiS3U L+LFx554FdDrPNFqUPVeTLjYdTLAMZ4= Received: from imap3-int (imap-alt.suse-dmz.suse.de [192.168.254.47]) by imap.suse.de (Postfix) with ESMTP id D3D6F11906; Mon, 28 Jun 2021 15:17:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1624893440; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=7KvlQelyZAIFCVw+L5VIZwe1M62unzloaolfynp7t2M=; b=enZ32PtaxsqQWfh9XGddOhSIr7IOT9knlyXySuo4TlJoQntXCJRyVIQurGF1/Q+OY466CM u/tBoLVd87qPlKKvA4SBdrR6LSsdphhh7gAWTO7fSeF/+NrYEIKaxXX5RTfETY3BPHiS3U L+LFx554FdDrPNFqUPVeTLjYdTLAMZ4= Received: from director2.suse.de ([192.168.254.72]) by imap3-int with ESMTPSA id GG1NMv/n2WDaJwAALh3uQQ (envelope-from ); Mon, 28 Jun 2021 15:17:19 +0000 From: mwilck@suse.com To: Mike Snitzer , Alasdair G Kergon , Bart Van Assche , "Martin K. Petersen" , linux-scsi@vger.kernel.org, dm-devel@redhat.com, Hannes Reinecke , Christoph Hellwig Cc: Daniel Wagner , linux-block@vger.kernel.org, Paolo Bonzini , Benjamin Marzinski , nkoenig@redhat.com, emilne@redhat.com, Martin Wilck Subject: [PATCH v5 2/3] scsi: scsi_ioctl: add sg_io_to_blk_status() Date: Mon, 28 Jun 2021 17:15:57 +0200 Message-Id: <20210628151558.2289-3-mwilck@suse.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210628151558.2289-1-mwilck@suse.com> References: <20210628151558.2289-1-mwilck@suse.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org From: Martin Wilck This helper converts the SCSI result in a sg_io_hdr struct to a blk_status_t. It will be used in the SG_IO code path for dm-multipath. Putting it into scsi_ioctl.c avoids open-coding SCSI specific code in the dm layer. Signed-off-by: Martin Wilck --- block/scsi_ioctl.c | 20 ++++++++++++++++++++ include/linux/blkdev.h | 1 + 2 files changed, 21 insertions(+) diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c index 19b63b64ecbc..e061398be90f 100644 --- a/block/scsi_ioctl.c +++ b/block/scsi_ioctl.c @@ -929,6 +929,26 @@ blk_status_t __scsi_result_to_blk_status(int *cmd_result, int result) } EXPORT_SYMBOL(__scsi_result_to_blk_status); +blk_status_t sg_io_to_blk_status(struct sg_io_hdr *hdr) +{ + int result; + blk_status_t sts; + + if (!(hdr->info & SG_INFO_CHECK)) + return BLK_STS_OK; + + result = hdr->status | + (hdr->msg_status << 8) | + (hdr->host_status << 16) | + (hdr->driver_status << 24); + + sts = __scsi_result_to_blk_status(&result, result); + hdr->host_status = host_byte(result); + + return sts; +} +EXPORT_SYMBOL(sg_io_to_blk_status); + static int __init blk_scsi_ioctl_init(void) { blk_set_cmd_filter_defaults(&blk_default_cmd_filter); diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 48497a77428d..5da03edf125c 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -2022,4 +2022,5 @@ int freeze_bdev(struct block_device *bdev); int thaw_bdev(struct block_device *bdev); blk_status_t __scsi_result_to_blk_status(int *cmd_result, int result); +blk_status_t sg_io_to_blk_status(struct sg_io_hdr *hdr); #endif /* _LINUX_BLKDEV_H */