From patchwork Sun Nov 1 22:23:52 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heiner Kallweit X-Patchwork-Id: 1391881 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20161025 header.b=anZV2MW+; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4CPW3L3w4wz9sVM for ; Mon, 2 Nov 2020 09:30:54 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727345AbgKAWaw (ORCPT ); Sun, 1 Nov 2020 17:30:52 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42298 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727197AbgKAWaw (ORCPT ); Sun, 1 Nov 2020 17:30:52 -0500 Received: from mail-ed1-x543.google.com (mail-ed1-x543.google.com [IPv6:2a00:1450:4864:20::543]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A3412C0617A6 for ; Sun, 1 Nov 2020 14:30:51 -0800 (PST) Received: by mail-ed1-x543.google.com with SMTP id l24so12445402edj.8 for ; Sun, 01 Nov 2020 14:30:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:message-id:date:user-agent:mime-version :content-language:content-transfer-encoding; bh=T+cpjV/KX9R+fbpwvxt2QgajOEAMbJ7jZ/4yqLe5zM0=; b=anZV2MW+DNBAq+vtqdRVsPstUkzBE7P9T5L2JsnvSX7G5eTmZ9hhzUZo7YSBDSFfZ1 Ik1zi9TBBjVEZ3+cB9f+6OqNQOY8x6BUtTVQf7X83dygWXPW391Jkxaeu/2tA5Z/axIb IXWEfRxDPAXNG0XTAbhPo5W77cBSEtHRyul4ur+SIs2h1N9rIqCS23kZ9hxvox3pKEJ6 oaMfFtQBFnh69uOjLb0IJT3pCpXQfzW5Xhsq5CD5odVFvMaiobXhJEzY66YWJuS9ol0d yCWaUI94UgqzE1jkYaRlZABUWeIqGYRdpU4d/Dfp9l5DBjCDxrQGS1eSGBjkDBA03XxV Bpew== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:message-id:date:user-agent :mime-version:content-language:content-transfer-encoding; bh=T+cpjV/KX9R+fbpwvxt2QgajOEAMbJ7jZ/4yqLe5zM0=; b=h0x046jBaVxtPcO+dxR/Uh9/98fzI8yz/sOXnbSivA2vWSH7lhOIoMl1TkiDg7HZ9b hZdyuf4Y89avzKLiDn8CQa7l0eOBl6j3awmWlLvQEZ9qQ3R8C9CKxhCAg/avA7FQUAqI K92NYTPyp775B3PZH9SAoJc4FdrpCvhemXp8GKrYN7HnLEQ/+IQnL4Z6/PyC7zr2K9Eb R0NKP9DDJca7Ph9nLkEV4vmhjS6mw/WBZwjYBNUPkL9/sq6YemSeofXOt4OhG7QQvZqz fO+q0qb5F1g7cxpjUpzJg6IIIxmKnuUr6n8sSAJ7CdP5ihT5rpjmj++eGDsQEClqnv0v VEGw== X-Gm-Message-State: AOAM531ptYauMyqXTdUl2eDlygmB+8aa4YNOdrlFsugWGZow3QlpexIB tsN6q4kaTO+1LkOLG36nfh9L65wcm+I= X-Google-Smtp-Source: ABdhPJzEnHIC6Qe5rYoiPSSbdR+1D4A2iY3dmFsLsgZtdZjGbPEYQuqWygTuKPQo8Dk3iR3y/nm5Yg== X-Received: by 2002:aa7:d7ce:: with SMTP id e14mr14377712eds.258.1604269849996; Sun, 01 Nov 2020 14:30:49 -0800 (PST) Received: from ?IPv6:2003:ea:8f23:2800:3050:ca03:432d:4900? (p200300ea8f2328003050ca03432d4900.dip0.t-ipconnect.de. [2003:ea:8f23:2800:3050:ca03:432d:4900]) by smtp.googlemail.com with ESMTPSA id i14sm8351939ejp.2.2020.11.01.14.30.49 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 01 Nov 2020 14:30:49 -0800 (PST) From: Heiner Kallweit To: Jakub Kicinski , David Miller , Realtek linux nic maintainers Cc: "netdev@vger.kernel.org" Subject: [PATCH net-next] r8169: align number of tx descriptors with vendor driver Message-ID: Date: Sun, 1 Nov 2020 23:23:52 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.4.0 MIME-Version: 1.0 Content-Language: en-US Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Lowest number of tx descriptors used in the vendor drivers is 256 in r8169. r8101/r8168/r8125 use 1024 what seems to be the hw limit. Stay on the safe side and go with 256, same as number of rx descriptors. Signed-off-by: Heiner Kallweit --- drivers/net/ethernet/realtek/r8169_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c index ecdc0c36c..a426eed78 100644 --- a/drivers/net/ethernet/realtek/r8169_main.c +++ b/drivers/net/ethernet/realtek/r8169_main.c @@ -67,7 +67,7 @@ #define R8169_REGS_SIZE 256 #define R8169_RX_BUF_SIZE (SZ_16K - 1) -#define NUM_TX_DESC 64 /* Number of Tx descriptor registers */ +#define NUM_TX_DESC 256 /* Number of Tx descriptor registers */ #define NUM_RX_DESC 256U /* Number of Rx descriptor registers */ #define R8169_TX_RING_BYTES (NUM_TX_DESC * sizeof(struct TxDesc)) #define R8169_RX_RING_BYTES (NUM_RX_DESC * sizeof(struct RxDesc))