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=-9.3 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 15D6EC65BAE for ; Thu, 13 Dec 2018 04:28:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D315E20879 for ; Thu, 13 Dec 2018 04:28:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1544675333; bh=NsacCFtlTmwPMHNMAFtbP/JG7NGM3lone9hfForMMn8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=QVomVU6p/ZT5OATiksSIAGtYOiHPBxf+vSdZnNtZfN0bJPu5HpABvYPyQqUZ/nRL0 m4m5Xymz2KbC3HBfvMZ8+eRMHyFawGR8u06zwA40iAFKIiWKQOV11SwErUc7ANrgb2 d4fhEorxeTPJzD74Tg9kF4MlEPAGhjz3pxzjB5Rg= DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D315E20879 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727111AbeLME2w (ORCPT ); Wed, 12 Dec 2018 23:28:52 -0500 Received: from mail.kernel.org ([198.145.29.99]:41640 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726960AbeLME2t (ORCPT ); Wed, 12 Dec 2018 23:28:49 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 539A320849; Thu, 13 Dec 2018 04:28:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1544675329; bh=NsacCFtlTmwPMHNMAFtbP/JG7NGM3lone9hfForMMn8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nbcjS941OeDru80t9Q8wvq5JLrarxKLfbaAAd1XfcN1i5aLocS78eWpjBGdIlO8MF 4PSRJDfAgX6EPeyvy50RddPi1kwtyjZQvoRVgsbJt2U5Fc3Oo6PJaBupFVaiqrFBLI LGt7pBHl4uJ5++CYDjWHbc2dETKQdFC8ylSTlEy4= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Kunihiko Hayashi , "David S . Miller" , Sasha Levin , netdev@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 08/73] net: ethernet: ave: Replace NET_IP_ALIGN with AVE_FRAME_HEADROOM Date: Wed, 12 Dec 2018 23:27:33 -0500 Message-Id: <20181213042838.75160-8-sashal@kernel.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20181213042838.75160-1-sashal@kernel.org> References: <20181213042838.75160-1-sashal@kernel.org> MIME-Version: 1.0 X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Kunihiko Hayashi [ Upstream commit 88113957ddb7b7d5451e28cd708c82ea7e63b097 ] In commit 26a4676faa1a ("arm64: mm: define NET_IP_ALIGN to 0"), AVE controller affects this modification because the controller forces to ignore lower 2bits of buffer start address, and make 2-byte headroom, that is, data reception starts from (buffer + 2). This patch defines AVE_FRAME_HEADROOM macro as hardware-specific value, and replaces NET_IP_ALIGN with it. Signed-off-by: Kunihiko Hayashi Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/ethernet/socionext/sni_ave.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/net/ethernet/socionext/sni_ave.c b/drivers/net/ethernet/socionext/sni_ave.c index f7ecceeb1e28..f27d67a4d304 100644 --- a/drivers/net/ethernet/socionext/sni_ave.c +++ b/drivers/net/ethernet/socionext/sni_ave.c @@ -194,6 +194,7 @@ /* Parameter for ethernet frame */ #define AVE_MAX_ETHFRAME 1518 +#define AVE_FRAME_HEADROOM 2 /* Parameter for interrupt */ #define AVE_INTM_COUNT 20 @@ -585,12 +586,13 @@ static int ave_rxdesc_prepare(struct net_device *ndev, int entry) skb = priv->rx.desc[entry].skbs; if (!skb) { - skb = netdev_alloc_skb_ip_align(ndev, - AVE_MAX_ETHFRAME); + skb = netdev_alloc_skb(ndev, AVE_MAX_ETHFRAME); if (!skb) { netdev_err(ndev, "can't allocate skb for Rx\n"); return -ENOMEM; } + skb->data += AVE_FRAME_HEADROOM; + skb->tail += AVE_FRAME_HEADROOM; } /* set disable to cmdsts */ @@ -603,12 +605,12 @@ static int ave_rxdesc_prepare(struct net_device *ndev, int entry) * - Rx buffer begins with 2 byte headroom, and data will be put from * (buffer + 2). * To satisfy this, specify the address to put back the buffer - * pointer advanced by NET_IP_ALIGN by netdev_alloc_skb_ip_align(), - * and expand the map size by NET_IP_ALIGN. + * pointer advanced by AVE_FRAME_HEADROOM, and expand the map size + * by AVE_FRAME_HEADROOM. */ ret = ave_dma_map(ndev, &priv->rx.desc[entry], - skb->data - NET_IP_ALIGN, - AVE_MAX_ETHFRAME + NET_IP_ALIGN, + skb->data - AVE_FRAME_HEADROOM, + AVE_MAX_ETHFRAME + AVE_FRAME_HEADROOM, DMA_FROM_DEVICE, &paddr); if (ret) { netdev_err(ndev, "can't map skb for Rx\n"); -- 2.19.1