From patchwork Wed Aug 18 19:07:55 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Biju Das X-Patchwork-Id: 499515 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 CECE6C4338F for ; Wed, 18 Aug 2021 19:08:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B5801610E6 for ; Wed, 18 Aug 2021 19:08:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233254AbhHRTJU (ORCPT ); Wed, 18 Aug 2021 15:09:20 -0400 Received: from relmlor1.renesas.com ([210.160.252.171]:14414 "EHLO relmlie5.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S233350AbhHRTI6 (ORCPT ); Wed, 18 Aug 2021 15:08:58 -0400 X-IronPort-AV: E=Sophos;i="5.84,332,1620658800"; d="scan'208";a="91033563" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie5.idc.renesas.com with ESMTP; 19 Aug 2021 04:08:22 +0900 Received: from localhost.localdomain (unknown [10.226.93.61]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id 4437040D5D67; Thu, 19 Aug 2021 04:08:19 +0900 (JST) From: Biju Das To: "David S. Miller" , Jakub Kicinski Cc: Biju Das , Sergei Shtylyov , Geert Uytterhoeven , Sergey Shtylyov , Adam Ford , Andrew Lunn , Yuusuke Ashizuka , Yoshihiro Shimoda , netdev@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Chris Paterson , Biju Das , Prabhakar Mahadev Lad Subject: [PATCH net-next v3 4/9] ravb: Add max_rx_len to struct ravb_hw_info Date: Wed, 18 Aug 2021 20:07:55 +0100 Message-Id: <20210818190800.20191-5-biju.das.jz@bp.renesas.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210818190800.20191-1-biju.das.jz@bp.renesas.com> References: <20210818190800.20191-1-biju.das.jz@bp.renesas.com> Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org The maximum descriptor size that can be specified on the reception side for R-Car is 2048 bytes, whereas for RZ/G2L it is 8096. Add the max_rx_len variable to struct ravb_hw_info for allocating different RX skb buffer sizes for R-Car and RZ/G2L using the netdev_alloc_skb function. Signed-off-by: Biju Das Reviewed-by: Lad Prabhakar Reviewed-by: Andrew Lunn Reviewed-by: Sergey Shtylyov --- v3: * Retained Rb tag from Andrew, since the change is just renaming the variable from skb_sz to max_rx_len. v2: * Incorporated Andrew and Sergei's review comments for making it smaller patch and provided detailed description. --- drivers/net/ethernet/renesas/ravb.h | 1 + drivers/net/ethernet/renesas/ravb_main.c | 10 ++++++---- 2 files changed, 7 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/renesas/ravb.h index 4f71e5699ca1..976242ed6f7a 100644 --- a/drivers/net/ethernet/renesas/ravb.h +++ b/drivers/net/ethernet/renesas/ravb.h @@ -990,6 +990,7 @@ enum ravb_chip_id { struct ravb_hw_info { enum ravb_chip_id chip_id; + size_t max_rx_len; unsigned aligned_tx: 1; }; diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c index dbccf2cd89b2..d9bb5a261d40 100644 --- a/drivers/net/ethernet/renesas/ravb_main.c +++ b/drivers/net/ethernet/renesas/ravb_main.c @@ -339,6 +339,7 @@ static void ravb_ring_format(struct net_device *ndev, int q) static int ravb_ring_init(struct net_device *ndev, int q) { struct ravb_private *priv = netdev_priv(ndev); + const struct ravb_hw_info *info = priv->info; unsigned int num_tx_desc = priv->num_tx_desc; unsigned int ring_size; struct sk_buff *skb; @@ -353,7 +354,7 @@ static int ravb_ring_init(struct net_device *ndev, int q) goto error; for (i = 0; i < priv->num_rx_ring[q]; i++) { - skb = netdev_alloc_skb(ndev, RX_BUF_SZ + RAVB_ALIGN - 1); + skb = netdev_alloc_skb(ndev, info->max_rx_len); if (!skb) goto error; ravb_set_buffer_align(skb); @@ -535,6 +536,7 @@ static void ravb_rx_csum(struct sk_buff *skb) static bool ravb_rx(struct net_device *ndev, int *quota, int q) { struct ravb_private *priv = netdev_priv(ndev); + const struct ravb_hw_info *info = priv->info; int entry = priv->cur_rx[q] % priv->num_rx_ring[q]; int boguscnt = (priv->dirty_rx[q] + priv->num_rx_ring[q]) - priv->cur_rx[q]; @@ -619,9 +621,7 @@ static bool ravb_rx(struct net_device *ndev, int *quota, int q) desc->ds_cc = cpu_to_le16(RX_BUF_SZ); if (!priv->rx_skb[q][entry]) { - skb = netdev_alloc_skb(ndev, - RX_BUF_SZ + - RAVB_ALIGN - 1); + skb = netdev_alloc_skb(ndev, info->max_rx_len); if (!skb) break; /* Better luck next round. */ ravb_set_buffer_align(skb); @@ -1926,10 +1926,12 @@ static int ravb_mdio_release(struct ravb_private *priv) static const struct ravb_hw_info ravb_gen3_hw_info = { .chip_id = RCAR_GEN3, + .max_rx_len = RX_BUF_SZ + RAVB_ALIGN - 1, }; static const struct ravb_hw_info ravb_gen2_hw_info = { .chip_id = RCAR_GEN2, + .max_rx_len = RX_BUF_SZ + RAVB_ALIGN - 1, .aligned_tx = 1, };