From patchwork Thu Apr 22 04:09:03 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ilya Lipnitskiy X-Patchwork-Id: 426787 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 BDC49C433ED for ; Thu, 22 Apr 2021 04:09:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9CA486142B for ; Thu, 22 Apr 2021 04:09:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232796AbhDVEKU (ORCPT ); Thu, 22 Apr 2021 00:10:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40732 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229940AbhDVEKO (ORCPT ); Thu, 22 Apr 2021 00:10:14 -0400 Received: from mail-pj1-x102b.google.com (mail-pj1-x102b.google.com [IPv6:2607:f8b0:4864:20::102b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8B334C06174A; Wed, 21 Apr 2021 21:09:40 -0700 (PDT) Received: by mail-pj1-x102b.google.com with SMTP id f6-20020a17090a6546b029015088cf4a1eso240191pjs.2; Wed, 21 Apr 2021 21:09:40 -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=HlVoF4WBd28mr16LsVXI69/qoWczDKwnY5ulmKa3JqU=; b=KCCRAcZRH2q9WePwudcJa7IRn0oj+Hd4SYQlaLwHq3erd6z/UEgaXA0VjZeMEqrIb+ Q8X+3nvCXsOfPr8nkzGciE8Qer9C3ZMOgUtKoqsebyt8sVkU+sCble0rLFQs7N4yi4uB 3/VeMjw44NhnRdpvm0GZ/15WBaCM4nf97qah/8NLY+JDxPvVxFma5tF2CQNpPXLCc2Lk FNY3+3OziJcva+chnYgwMTneBff5PLp257aFpmSb/HEDus3rUrw8XZ+UASTZcppghyVa +97lDFhnWmWG9icoVNkz6om+a07b07Ai1W4qQX0M4NuJd+o07N/spwuzwN+9qdSoae3e qtzw== 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=HlVoF4WBd28mr16LsVXI69/qoWczDKwnY5ulmKa3JqU=; b=AirwF58CrBdSCfuqzKSbGrp+KDPflh1DUqB3KuC/oWGO6XmPcp1JP7uoWZBSP/VxRU yM4vQgXz4rUvlU+jk+N3Klf1VLghuEZP+p17aRMBrDf2DiK6BQWWB/222E950+nbyZg3 DCtfR0Y1cUc5JwSMcTmLFr9+zXl4lBGn4l9+Sjs6y+9/mQLUiMPi9kDydm6bfKMqNIM1 aKxyKDBGVhbd7iXOtvLJwu9mur/L2WxzuRl7BadgdXFdaNzChqddaAtxQjQa8yPsi7jr u1yKxJqsDc+eJFI25neETYNRAXfMlZqXPLS3Xxjq7+hl6j3FOxyRP9z12W/t/5Yhwj2B RUJA== X-Gm-Message-State: AOAM533JNGFB8sbL2Hhtgo83j0Aud6rlkmnkQQ4esQ7AqRyPlfM9498L TvrglHxqPRadLEFYyc+sIWg= X-Google-Smtp-Source: ABdhPJwm/HPuAW+zUXQgRnrXd/od7i7maE9NkKmpXPunzRtlbKEr3GPxchy0RmpvN8P7icTmsyIBTA== X-Received: by 2002:a17:902:7788:b029:e9:11:5334 with SMTP id o8-20020a1709027788b02900e900115334mr1405530pll.70.1619064580121; Wed, 21 Apr 2021 21:09:40 -0700 (PDT) Received: from z640-arch.lan ([2602:61:7344:f100::678]) by smtp.gmail.com with ESMTPSA id i17sm635354pfd.84.2021.04.21.21.09.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Apr 2021 21:09:39 -0700 (PDT) From: Ilya Lipnitskiy To: Felix Fietkau , John Crispin , Sean Wang , Mark Lee , "David S. Miller" , Jakub Kicinski , Matthias Brugger , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org Cc: Ilya Lipnitskiy Subject: [PATCH net-next 03/14] net: ethernet: mtk_eth_soc: fix build_skb cleanup Date: Wed, 21 Apr 2021 21:09:03 -0700 Message-Id: <20210422040914.47788-4-ilya.lipnitskiy@gmail.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210422040914.47788-1-ilya.lipnitskiy@gmail.com> References: <20210422040914.47788-1-ilya.lipnitskiy@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org In case build_skb fails, call skb_free_frag on the correct pointer. Also update the DMA structures with the new mapping before exiting, because the mapping was successful Suggested-by: Felix Fietkau Signed-off-by: Ilya Lipnitskiy --- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index 540003f3fcb8..07daa5de8bec 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -1304,9 +1304,9 @@ static int mtk_poll_rx(struct napi_struct *napi, int budget, /* receive data */ skb = build_skb(data, ring->frag_size); if (unlikely(!skb)) { - skb_free_frag(new_data); + skb_free_frag(data); netdev->stats.rx_dropped++; - goto release_desc; + goto skip_rx; } skb_reserve(skb, NET_SKB_PAD + NET_IP_ALIGN); @@ -1326,6 +1326,7 @@ static int mtk_poll_rx(struct napi_struct *napi, int budget, skb_record_rx_queue(skb, 0); napi_gro_receive(napi, skb); +skip_rx: ring->data[idx] = new_data; rxd->rxd1 = (unsigned int)dma_addr;