From mboxrd@z Thu Jan 1 00:00:00 1970 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=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,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 ACC08C5DF60 for ; Tue, 5 Nov 2019 16:21:10 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 7E9A42087E for ; Tue, 5 Nov 2019 16:21:10 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="f9tGua8Y" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7E9A42087E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mellanox.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=5zt9H0G73qWPWKHsyNl/kygoZofn8hAE1B8uxKqSumM=; b=f9tGua8YObeIFl SJvVJJOMoIRQfHK1qaohFMLhw0Sqie/Lm8sDFErKROgX2nwlrTqVFLaorNChapLwzTqiRI7IGboWO khtaruvJAV9CyJ352Tt/25SV7g43G2PmAFXyOGdK8AVulri9Rz26dgr7Tqnh7+G72DCHnqMLzXQrh yLhT5u7JeXTKkHq0GBAuMsGRj3dmmyaiF55okIhrYtLyRN+BIyTII+bORONlZzMoDrFzVSzNpyrEJ R31IdBQ+DP3+XJrf2UuXOsQ5eSWNrSZTKmT2hp1JPWMdslEE0Bm7ANPGiwgFkU4fbDXkMLzu5NUei oVKPsbowvHkWXex6OTmg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iS1Zr-000410-Ql; Tue, 05 Nov 2019 16:21:07 +0000 Received: from mail-il-dmz.mellanox.com ([193.47.165.129] helo=mellanox.co.il) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iS1ZO-0003S6-SC for linux-nvme@lists.infradead.org; Tue, 05 Nov 2019 16:20:43 +0000 Received: from Internal Mail-Server by MTLPINE1 (envelope-from maxg@mellanox.com) with ESMTPS (AES256-SHA encrypted); 5 Nov 2019 18:20:28 +0200 Received: from mtr-vdi-031.wap.labs.mlnx. (mtr-vdi-031.wap.labs.mlnx [10.209.102.136]) by labmailer.mlnx (8.13.8/8.13.8) with ESMTP id xA5GKQm8013132; Tue, 5 Nov 2019 18:20:28 +0200 From: Max Gurtovoy To: linux-nvme@lists.infradead.org, kbusch@kernel.org, hch@lst.de, sagi@grimberg.me Subject: [PATCH 11/15] nvmet: Introduce nvmet_rw_prot_len and nvmet_ns_has_pi Date: Tue, 5 Nov 2019 18:20:22 +0200 Message-Id: <20191105162026.183901-13-maxg@mellanox.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20191105162026.183901-1-maxg@mellanox.com> References: <20191105162026.183901-1-maxg@mellanox.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191105_082039_349052_9C2E3369 X-CRM114-Status: UNSURE ( 7.08 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: vladimirk@mellanox.com, idanb@mellanox.com, israelr@mellanox.com, shlomin@mellanox.com, oren@mellanox.com, maxg@mellanox.com Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org From: Israel Rukshin This is preparation for adding metadata (T10-PI) over fabric support. Signed-off-by: Israel Rukshin Reviewed-by: Max Gurtovoy --- drivers/nvme/target/nvmet.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/nvme/target/nvmet.h b/drivers/nvme/target/nvmet.h index 39d5300..574ee55 100644 --- a/drivers/nvme/target/nvmet.h +++ b/drivers/nvme/target/nvmet.h @@ -501,6 +501,16 @@ static inline u32 nvmet_rw_data_len(struct nvmet_req *req) req->ns->blksize_shift; } +static inline u32 nvmet_rw_prot_len(struct nvmet_req *req) +{ + return ((u32)le16_to_cpu(req->cmd->rw.length) + 1) * req->ns->ms; +} + +static inline bool nvmet_ns_has_pi(struct nvmet_ns *ns) +{ + return ns->prot_type && ns->ms == sizeof(struct t10_pi_tuple); +} + static inline u32 nvmet_dsm_len(struct nvmet_req *req) { return (le32_to_cpu(req->cmd->dsm.nr) + 1) * -- 1.8.3.1 _______________________________________________ Linux-nvme mailing list Linux-nvme@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-nvme