From patchwork Mon Mar 19 07:50:11 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Rybchenko X-Patchwork-Id: 36236 X-Patchwork-Delegate: ferruh.yigit@amd.com Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 270824CC0; Mon, 19 Mar 2018 08:50:23 +0100 (CET) Received: from dispatch1-us1.ppe-hosted.com (dispatch1-us1.ppe-hosted.com [148.163.129.52]) by dpdk.org (Postfix) with ESMTP id A7C1C4C93; Mon, 19 Mar 2018 08:50:21 +0100 (CET) X-Virus-Scanned: Proofpoint Essentials engine Received: from webmail.solarflare.com (webmail.solarflare.com [12.187.104.26]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1-us1.ppe-hosted.com (Proofpoint Essentials ESMTP Server) with ESMTPS id 6C94DA80061; Mon, 19 Mar 2018 07:50:20 +0000 (UTC) Received: from sfocexch01r.SolarFlarecom.com (10.20.40.34) by ocex03.SolarFlarecom.com (10.20.40.36) with Microsoft SMTP Server (TLS) id 15.0.1044.25; Mon, 19 Mar 2018 00:50:18 -0700 Received: from ocex03.SolarFlarecom.com (10.20.40.36) by sfocexch01r.SolarFlarecom.com (10.20.40.34) with Microsoft SMTP Server (TLS) id 15.0.1044.25; Mon, 19 Mar 2018 00:50:16 -0700 Received: from opal.uk.solarflarecom.com (10.17.10.1) by ocex03.SolarFlarecom.com (10.20.40.36) with Microsoft SMTP Server (TLS) id 15.0.1044.25 via Frontend Transport; Mon, 19 Mar 2018 00:50:15 -0700 Received: from uklogin.uk.solarflarecom.com (uklogin.uk.solarflarecom.com [10.17.10.10]) by opal.uk.solarflarecom.com (8.13.8/8.13.8) with ESMTP id w2J7oE0l002127; Mon, 19 Mar 2018 07:50:14 GMT Received: from uklogin.uk.solarflarecom.com (localhost.localdomain [127.0.0.1]) by uklogin.uk.solarflarecom.com (8.13.8/8.13.8) with ESMTP id w2J7oE6k002171; Mon, 19 Mar 2018 07:50:14 GMT From: Andrew Rybchenko To: CC: Date: Mon, 19 Mar 2018 07:50:11 +0000 Message-ID: <1521445811-2137-1-git-send-email-arybchenko@solarflare.com> X-Mailer: git-send-email 1.8.2.3 MIME-Version: 1.0 X-MDID: 1521445821-71rkUU3GScDr Subject: [dpdk-dev] [PATCH] net/sfc: fix mbuf data alignment calculation X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Unlike ffs() rte_bsf32() counts bit position from 0. Fixes: 0c7a0c35f24c ("net/sfc: calculate Rx buffer size which may be used") Cc: stable@dpdk.org Signed-off-by: Andrew Rybchenko --- drivers/net/sfc/sfc_rx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/sfc/sfc_rx.c b/drivers/net/sfc/sfc_rx.c index abc53fb..64bc9d4 100644 --- a/drivers/net/sfc/sfc_rx.c +++ b/drivers/net/sfc/sfc_rx.c @@ -887,7 +887,7 @@ sfc_rx_mbuf_data_alignment(struct rte_mempool *mb_pool) order = MIN(order, rte_bsf32(data_off)); - return 1u << (order - 1); + return 1u << order; } static uint16_t