From patchwork Fri Apr 16 21:22:18 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vladimir Oltean X-Patchwork-Id: 12208935 X-Patchwork-Delegate: kuba@kernel.org 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=-15.7 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,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 875FBC433ED for ; Fri, 16 Apr 2021 21:23:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 69A556023F for ; Fri, 16 Apr 2021 21:23:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344344AbhDPVXq (ORCPT ); Fri, 16 Apr 2021 17:23:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51012 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344323AbhDPVXl (ORCPT ); Fri, 16 Apr 2021 17:23:41 -0400 Received: from mail-pl1-x62d.google.com (mail-pl1-x62d.google.com [IPv6:2607:f8b0:4864:20::62d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 859A4C061756 for ; Fri, 16 Apr 2021 14:23:15 -0700 (PDT) Received: by mail-pl1-x62d.google.com with SMTP id 20so10704990pll.7 for ; Fri, 16 Apr 2021 14:23:15 -0700 (PDT) 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 :mime-version:content-transfer-encoding; bh=O3g2qhM6mlcVIMTVrQ6cO0+6INLxw+AiLv0b4IUQItk=; b=SfIE3VrxwuCAgL3+/zlq+jQg4EPgi+m39ejT0pBTUhJtj4x+dATJctsHsbJUBqS42i 1h3Fh43uJ2L+vHQ5qPpAkUFb69rTsFbeb04CuirSL4RUjSIGjq1Eo1M01pJe4rTnSotq WZ9C+6dppZObWReKng7+TiAQHbkVmSWKaFAweFlvAO9Nb6E1CgLjMXHwbNvb9f7KJ8Ef mc5Q33W7jleXSPqebiCYjm4xHve44I3CUDsk/3apUsY1GpEjEifH8x3YBLV6snibjmDz BZco6aRYP2Ue+UAZxniyWkoT4b9ryq/N6tyMYPHnMcVcAr+Yxm1NSmY7TmJCc7qSP2uH 8W8g== 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:mime-version:content-transfer-encoding; bh=O3g2qhM6mlcVIMTVrQ6cO0+6INLxw+AiLv0b4IUQItk=; b=rRWJSJwakaHcu+0p7jVRCs57O1BNgLfcTP1r0H40g/eDw38DZ7/iD+9AiN29yIJ7Su L7USFCdo5pvpkBTj0vVJMdbz0soBkWZ4owKu1mRDnxTOJrab0uildPkfZAYzLUOpoG30 BPleXGljd3wOj0xKyWh5rezQm+xOMlsdIt6ABks0zoK/0ogdZ1Iiq/vK0TtSWdTMYsD4 pyIMEMBfQf7iy3A0gkdjnP+S/TI4jJo6PWL/7fxLEgMYHq0s/Kh3X2VSbYyJ0Gntw0XG 4H+6x0YJNoaJw0GMV7btpzfYLIZ85JtjohLZi8i021bdSIrGvLwM7sriltHdR/RboLpJ yxvA== X-Gm-Message-State: AOAM532IM1GX54hTdZqmtrhwoU22ev/eGE9NQPEvhKRoMyWXc3ze/D6q eMp2X34GbnpE9DwRUgleX04= X-Google-Smtp-Source: ABdhPJyDUIZldlwz9wwGe4MLaZ4TGpxkOuB4LRl9IlzgfkqxDt2NZYMn/4SYy35xkbk87skSE5msSA== X-Received: by 2002:a17:90a:2f89:: with SMTP id t9mr11990518pjd.177.1618608195186; Fri, 16 Apr 2021 14:23:15 -0700 (PDT) Received: from localhost.localdomain (5-12-16-165.residential.rdsnet.ro. [5.12.16.165]) by smtp.gmail.com with ESMTPSA id t23sm6069132pju.15.2021.04.16.14.23.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 16 Apr 2021 14:23:14 -0700 (PDT) From: Vladimir Oltean To: Jakub Kicinski , "David S. Miller" , netdev@vger.kernel.org, Po Liu Cc: Claudiu Manoil , Alex Marginean , Yangbo Lu , =?utf-8?q?Toke_H=C3=B8iland-J=C3=B8rgensen?= , Vladimir Oltean Subject: [PATCH net-next 03/10] net: enetc: recycle buffers for frames with RX errors Date: Sat, 17 Apr 2021 00:22:18 +0300 Message-Id: <20210416212225.3576792-4-olteanv@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210416212225.3576792-1-olteanv@gmail.com> References: <20210416212225.3576792-1-olteanv@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org From: Vladimir Oltean When receiving a frame with errors, currently we do nothing with it (we don't construct an skb or an xdp_buff), we just exit the NAPI poll loop. Let's put the buffer back into the RX ring (similar to XDP_DROP). Signed-off-by: Vladimir Oltean --- drivers/net/ethernet/freescale/enetc/enetc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ethernet/freescale/enetc/enetc.c b/drivers/net/ethernet/freescale/enetc/enetc.c index c4ff090f29ec..c6f984473337 100644 --- a/drivers/net/ethernet/freescale/enetc/enetc.c +++ b/drivers/net/ethernet/freescale/enetc/enetc.c @@ -822,12 +822,14 @@ static bool enetc_check_bd_errors_and_consume(struct enetc_bdr *rx_ring, if (likely(!(bd_status & ENETC_RXBD_LSTATUS(ENETC_RXBD_ERR_MASK)))) return false; + enetc_put_rx_buff(rx_ring, &rx_ring->rx_swbd[*i]); enetc_rxbd_next(rx_ring, rxbd, i); while (!(bd_status & ENETC_RXBD_LSTATUS_F)) { dma_rmb(); bd_status = le32_to_cpu((*rxbd)->r.lstatus); + enetc_put_rx_buff(rx_ring, &rx_ring->rx_swbd[*i]); enetc_rxbd_next(rx_ring, rxbd, i); }