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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 96BEAC433DB for ; Wed, 6 Jan 2021 14:44:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4E02823110 for ; Wed, 6 Jan 2021 14:44:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726724AbhAFOoB (ORCPT ); Wed, 6 Jan 2021 09:44:01 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59242 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726011AbhAFOoA (ORCPT ); Wed, 6 Jan 2021 09:44:00 -0500 Received: from mail-pf1-x42d.google.com (mail-pf1-x42d.google.com [IPv6:2607:f8b0:4864:20::42d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EDA4BC06135A; Wed, 6 Jan 2021 06:43:19 -0800 (PST) Received: by mail-pf1-x42d.google.com with SMTP id a188so1808681pfa.11; Wed, 06 Jan 2021 06:43:19 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=z/gY4eGbQAG4g6JUH+BYAEEr7QAfURZLBW/Uf2NFIK0=; b=IPSEZARh30rxUqSwqq9rqaIe+PW5H7ek0sb4Cvr2MhQy/Q7VrQiNqNAmwOHN6KE3Ez V2qxLWygzb2tkHtBoUgd0C98YF0LP7ZAEp0+0ZKt9e5a72RmfjDIeGj0D61ZLYVrOszO hBc1gs3QxNcRtgnIKhZuWAWMZNiBbEDVtfxva7NL5d68NGi/PPXrWLG49Jk69oswLPRW 2y/n+dYiBIelPuO4ztRcRVqJ3rGM9KMkg/ymbvUaXXdI/gxymspZ2Shgy5jsw2EsahXZ 8jSugzs94fTkHhvcqd32M/Xw53UZRngMtZxXqx8SryuuYBpwy/GWoQjFLWkawuENpR5R K3vA== 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:date:message-id:in-reply-to :references; bh=z/gY4eGbQAG4g6JUH+BYAEEr7QAfURZLBW/Uf2NFIK0=; b=CbZFstZvAFN9HUjyMEsW8CHROc3PBD+rXb9SwH2RNDLJ1sfOPg+VKx//S2ixfsg2Wa mtmIdiYjfgsUUocovMtg37cDdPubd0cN6X++pH8ij9dUGbVtfQ8ovrlXjFEPtkYSbB+N hMBCfDfD0LJ4iMMM/+4l4PbrcoJiH3ibhaxATZhiMrDRuF0z9YcsC9XLGJf9S/Cn9q+1 r1Jti+cwZiCHsU3CtTwQifmefWDlyGaVigp0KMVzboBX8yCtvcuPfXv4SG236E0toC4V A0dFOHiEtseb6K/Gz9seq0WgIrAb7fqyTbsSV65xijlSt7WtddUlcX0cWY7ctcOUdxYZ R26w== X-Gm-Message-State: AOAM532IqgSSGC0N46U41/JTrxSE9tNswjRcyYQuUTqCZS42vK9jcuuE T8JQVheL/7W09/EYACEUSMP1QP2J7js= X-Google-Smtp-Source: ABdhPJxQ+dFA/PivecFA1EwNbyd2csrbQ97GYfNKqFdTGd4st0fhLl9XtfPRwR9LsgyLitEw4MngwQ== X-Received: by 2002:aa7:82cc:0:b029:19e:1328:d039 with SMTP id f12-20020aa782cc0000b029019e1328d039mr4283565pfn.70.1609944199597; Wed, 06 Jan 2021 06:43:19 -0800 (PST) Received: from DESKTOP-8REGVGF.localdomain ([124.13.157.5]) by smtp.gmail.com with ESMTPSA id h8sm3076774pjc.2.2021.01.06.06.43.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 06 Jan 2021 06:43:19 -0800 (PST) From: Sieng Piaw Liew To: Florian Fainelli Cc: bcm-kernel-feedback-list@broadcom.com, Sieng Piaw Liew , netdev@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH net-next v3 4/7] bcm63xx_enet: alloc rx skb with NET_IP_ALIGN Date: Wed, 6 Jan 2021 22:42:05 +0800 Message-Id: <20210106144208.1935-5-liew.s.piaw@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210106144208.1935-1-liew.s.piaw@gmail.com> References: <20210106144208.1935-1-liew.s.piaw@gmail.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Use netdev_alloc_skb_ip_align on newer SoCs with integrated switch (enetsw) when refilling RX. Increases packet processing performance by 30% (with netif_receive_skb_list). Non-enetsw SoCs cannot function with the extra pad so continue to use the regular netdev_alloc_skb. Tested on BCM6328 320 MHz and iperf3 -M 512 to measure packet/sec performance. Before: [ ID] Interval Transfer Bandwidth Retr [ 4] 0.00-30.00 sec 120 MBytes 33.7 Mbits/sec 277 sender [ 4] 0.00-30.00 sec 120 MBytes 33.5 Mbits/sec receiver After (+netif_receive_skb_list): [ 4] 0.00-30.00 sec 155 MBytes 43.3 Mbits/sec 354 sender [ 4] 0.00-30.00 sec 154 MBytes 43.1 Mbits/sec receiver Signed-off-by: Sieng Piaw Liew --- drivers/net/ethernet/broadcom/bcm63xx_enet.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/broadcom/bcm63xx_enet.c b/drivers/net/ethernet/broadcom/bcm63xx_enet.c index 21744dae30ce..96d56c3e2cc9 100644 --- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c +++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c @@ -237,7 +237,10 @@ static int bcm_enet_refill_rx(struct net_device *dev) desc = &priv->rx_desc_cpu[desc_idx]; if (!priv->rx_skb[desc_idx]) { - skb = netdev_alloc_skb(dev, priv->rx_skb_size); + if (priv->enet_is_sw) + skb = netdev_alloc_skb_ip_align(dev, priv->rx_skb_size); + else + skb = netdev_alloc_skb(dev, priv->rx_skb_size); if (!skb) break; priv->rx_skb[desc_idx] = skb; -- 2.17.1