From patchwork Mon Jul 6 06:13:01 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Klaus Jensen X-Patchwork-Id: 278498 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=-9.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, 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 4C94BC433DF for ; Mon, 6 Jul 2020 06:20:35 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 2207B20739 for ; Mon, 6 Jul 2020 06:20:35 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2207B20739 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=irrelevant.dk Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:57118 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jsKUU-0005OM-Bt for qemu-devel@archiver.kernel.org; Mon, 06 Jul 2020 02:20:34 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:60842) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jsKNx-0001sI-DY; Mon, 06 Jul 2020 02:13:49 -0400 Received: from charlie.dont.surf ([128.199.63.193]:58142) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jsKNt-0000xD-Pb; Mon, 06 Jul 2020 02:13:49 -0400 Received: from apples.local (80-167-98-190-cable.dk.customer.tdc.net [80.167.98.190]) by charlie.dont.surf (Postfix) with ESMTPSA id 0CCD0BF5FF; Mon, 6 Jul 2020 06:13:19 +0000 (UTC) From: Klaus Jensen To: qemu-block@nongnu.org Subject: [PATCH v3 16/18] hw/block/nvme: enforce valid queue creation sequence Date: Mon, 6 Jul 2020 08:13:01 +0200 Message-Id: <20200706061303.246057-17-its@irrelevant.dk> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200706061303.246057-1-its@irrelevant.dk> References: <20200706061303.246057-1-its@irrelevant.dk> MIME-Version: 1.0 Received-SPF: pass client-ip=128.199.63.193; envelope-from=its@irrelevant.dk; helo=charlie.dont.surf X-detected-operating-system: by eggs.gnu.org: First seen = 2020/07/06 02:13:11 X-ACL-Warn: Detected OS = Linux 3.11 and newer [fuzzy] X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , Dmitry Fomichev , Klaus Jensen , qemu-devel@nongnu.org, Max Reitz , Klaus Jensen , Keith Busch , Javier Gonzalez , Maxim Levitsky , =?utf-8?q?Philippe_Mathieu-Daud?= =?utf-8?b?w6k=?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Klaus Jensen Support returning Command Sequence Error if Set Features on Number of Queues is called after queues have been created. Signed-off-by: Klaus Jensen Reviewed-by: Maxim Levitsky Reviewed-by: Dmitry Fomichev --- hw/block/nvme.c | 12 ++++++++++++ hw/block/nvme.h | 1 + 2 files changed, 13 insertions(+) diff --git a/hw/block/nvme.c b/hw/block/nvme.c index af39126cd8d1..07d58aa945f2 100644 --- a/hw/block/nvme.c +++ b/hw/block/nvme.c @@ -946,6 +946,13 @@ static uint16_t nvme_create_cq(NvmeCtrl *n, NvmeCmd *cmd) cq = g_malloc0(sizeof(*cq)); nvme_init_cq(cq, n, prp1, cqid, vector, qsize + 1, NVME_CQ_FLAGS_IEN(qflags)); + + /* + * It is only required to set qs_created when creating a completion queue; + * creating a submission queue without a matching completion queue will + * fail. + */ + n->qs_created = true; return NVME_SUCCESS; } @@ -1346,6 +1353,10 @@ static uint16_t nvme_set_feature(NvmeCtrl *n, NvmeCmd *cmd, NvmeRequest *req) blk_set_enable_write_cache(n->conf.blk, dw11 & 1); break; case NVME_NUMBER_OF_QUEUES: + if (n->qs_created) { + return NVME_CMD_SEQ_ERROR | NVME_DNR; + } + /* * NVMe v1.3, Section 5.21.1.7: 0xffff is not an allowed value for NCQR * and NSQR. @@ -1478,6 +1489,7 @@ static void nvme_clear_ctrl(NvmeCtrl *n) n->aer_queued = 0; n->outstanding_aers = 0; + n->qs_created = false; blk_flush(n->conf.blk); n->bar.cc = 0; diff --git a/hw/block/nvme.h b/hw/block/nvme.h index b93067c9e4a1..0b6a8ae66559 100644 --- a/hw/block/nvme.h +++ b/hw/block/nvme.h @@ -95,6 +95,7 @@ typedef struct NvmeCtrl { BlockConf conf; NvmeParams params; + bool qs_created; uint32_t page_size; uint16_t page_bits; uint16_t max_prp_ents;