From patchwork Mon Oct 26 19:06:41 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Disseldorp X-Patchwork-Id: 11858457 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 11FDF139F for ; Mon, 26 Oct 2020 19:13:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F408B2085B for ; Mon, 26 Oct 2020 19:13:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1792631AbgJZTNn (ORCPT ); Mon, 26 Oct 2020 15:13:43 -0400 Received: from mx2.suse.de ([195.135.220.15]:44142 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2392749AbgJZTH0 (ORCPT ); Mon, 26 Oct 2020 15:07:26 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 8E796AE2C; Mon, 26 Oct 2020 19:07:25 +0000 (UTC) From: David Disseldorp To: target-devel@vger.kernel.org Cc: linux-scsi@vger.kernel.org Subject: [PATCH v2 0/5] scsi: target: COMPARE AND WRITE miscompare sense Date: Mon, 26 Oct 2020 20:06:41 +0100 Message-Id: <20201026190646.8727-1-ddiss@suse.de> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org This patchset adds missing functionality to return the offset of non-matching read/compare data in the sense INFORMATION field on COMPARE AND WRITE miscompare. The functionality can be tested using the libiscsi CompareAndWrite.MiscompareSense test proposed via: https://github.com/sahlberg/libiscsi/pull/344 Changes since v1: - drop unnecessary WARN_ON() - fix two checkpatch warnings - drop single-use nlbas variable - avoid compare_len recalculation Cheers, David drivers/target/target_core_sbc.c | 137 +++++++++++++++---------- drivers/target/target_core_transport.c | 33 +++--- include/target/target_core_base.h | 2 +- lib/scatterlist.c | 2 +- 4 files changed, 102 insertions(+), 72 deletions(-) Reviewed-by: Mike Christie