From patchwork Wed Apr 10 13:13:46 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Breno Leitao X-Patchwork-Id: 13624459 X-Patchwork-Delegate: kvalo@adurom.com Received: from mail-ed1-f48.google.com (mail-ed1-f48.google.com [209.85.208.48]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id F38EA16D9AB; Wed, 10 Apr 2024 13:18:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.208.48 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712755090; cv=none; b=Obp2TIOn1IU/qAPkALYoEAuPAXSfYQgY32d6tGHvFAKhMyNHyp+HV9T+IHloYvFct/BiYaShKMX8Fx+dr3kpO29yAJps6uZO4tlHj7zWS0dhhG8uXjo3Hvty4JNiw//yoJjXF/u0cZ6TawBeEQGGGE/49dPlX+y0BRHiD/K97IA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712755090; c=relaxed/simple; bh=thNNGA+Buyv1A48P5cMpc4XXfCvRQSFmpwoRUX9PFQs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=NyKBAbOsKGnVJJuRiKGXMjiOkFB1LrxTIEFjXlxR37RQ1VORJKYtgt0xSE8JNveh2pqOBLruEhwLNpCsNFnUpcH0Y8mcc84NI/Yw3o8DAWBdY3t7HQpHQRx7zu9kAa9aoGA2xM3ITcfnChjNvY+3/5jptEjETUec6y+zYFzPPRk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=debian.org; spf=pass smtp.mailfrom=gmail.com; arc=none smtp.client-ip=209.85.208.48 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=debian.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Received: by mail-ed1-f48.google.com with SMTP id 4fb4d7f45d1cf-56e2ac1c16aso6858175a12.0; Wed, 10 Apr 2024 06:18:08 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1712755087; x=1713359887; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=bGHHnAjzHXOHKZAHNwNt7Xm//rgfn0lSUB+nM5VysgU=; b=T9XWF/GSmbwTBbB6ryoVLwfFrd4VekxTEsHkKXYrre3vkNNrQx6OuOk8GpMAwe6l+H uYjhbE29RMlUpf0EtuUn5LziwLWlbzCwFEePZIcF7nEnCWji8mcV1n7Q5r2nr+RKVoXq cNwHhcOdi2Mit1dKQdVtpl81rOaB+L1pDv1FEnuQEXDVH8lGO97rkXPJjNObc2V4viy9 EXW970WFyNJZr1UhepVSIRk61G4klHbMCHrdEgbsYVs6a4sALIohzwq33veeZGHxjphz WJpShdKVXwQoOlCBjILdjz9AC3NMCYnwbxz1vPCQp63XX9aXHDUVsoIoNRa/oa7CS6+x DeyA== X-Forwarded-Encrypted: i=1; AJvYcCUCJL7XRQw8z6X9C2ijkiwV09xu8GFVob8mKhmEcRpvhwyQTDmb/wxMqJeUIXo2ugReQ0Jt5h5Jgz+O/MUEekEZGrGWL5qHk3eRPyW+c2UjhrW9bsYzmPVCqDWLNBzE/k52FbWHMZm8ZC/1yg8nCMBnjBPN6Mblw8dm+e3BwH9bUWgFt8AYZXBIiP4OdorBxkvZ+awpWJJGYtY= X-Gm-Message-State: AOJu0Yyvaa+VqmZVJ1y5KdNh08c/QHQA22zklXhZJsg85IhBFbxmqEy4 C9Wq8WITVlTrUnL5RIUgsW4oYSndYJQ0+Qp/32GJMsHwhBizSinX X-Google-Smtp-Source: AGHT+IHfRDKViblgpUPyWrUAnhST+TBB6wSl0qe87VqUsLBU1kMLXMG9TkoSj5KDLOwo8qX+Dgkttg== X-Received: by 2002:a50:9e27:0:b0:56e:23e3:bdc3 with SMTP id z36-20020a509e27000000b0056e23e3bdc3mr434260ede.16.1712755087472; Wed, 10 Apr 2024 06:18:07 -0700 (PDT) Received: from localhost (fwdproxy-lla-118.fbsv.net. [2a03:2880:30ff:76::face:b00c]) by smtp.gmail.com with ESMTPSA id h1-20020a0564020e8100b005682a0e915fsm6433736eda.76.2024.04.10.06.18.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 10 Apr 2024 06:18:06 -0700 (PDT) From: Breno Leitao To: aleksander.lobakin@intel.com, kuba@kernel.org, davem@davemloft.net, pabeni@redhat.com, edumazet@google.com, elder@kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, nbd@nbd.name, sean.wang@mediatek.com, Mark-MC.Lee@mediatek.com, lorenzo@kernel.org, taras.chornyi@plvision.eu, ath11k@lists.infradead.org, ath10k@lists.infradead.org, linux-wireless@vger.kernel.org, geomatsi@gmail.com, kvalo@kernel.org, Matthias Brugger , AngeloGioacchino Del Regno , Alexei Starovoitov , Daniel Borkmann , Jesper Dangaard Brouer , John Fastabend Cc: quic_jjohnson@quicinc.com, leon@kernel.org, dennis.dalessandro@cornelisnetworks.com, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, bpf@vger.kernel.org, idosch@idosch.org, leitao@debian.org Subject: [PATCH net-next v5 05/10] net: mediatek: mtk_eth_sock: allocate dummy net_device dynamically Date: Wed, 10 Apr 2024 06:13:46 -0700 Message-ID: <20240410131407.3897251-6-leitao@debian.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240410131407.3897251-1-leitao@debian.org> References: <20240410131407.3897251-1-leitao@debian.org> Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Embedding net_device into structures prohibits the usage of flexible arrays in the net_device structure. For more details, see the discussion at [1]. Un-embed the net_device from the private struct by converting it into a pointer. Then use the leverage the new alloc_netdev_dummy() helper to allocate and initialize dummy devices. [1] https://lore.kernel.org/all/20240229225910.79e224cf@kernel.org/ Signed-off-by: Breno Leitao --- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 17 +++++++++++++---- drivers/net/ethernet/mediatek/mtk_eth_soc.h | 2 +- 2 files changed, 14 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index caa13b9cedff..d7a96dc11c07 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -1710,7 +1710,7 @@ static struct page_pool *mtk_create_page_pool(struct mtk_eth *eth, if (IS_ERR(pp)) return pp; - err = __xdp_rxq_info_reg(xdp_q, ð->dummy_dev, id, + err = __xdp_rxq_info_reg(xdp_q, eth->dummy_dev, id, eth->rx_napi.napi_id, PAGE_SIZE); if (err < 0) goto err_free_pp; @@ -4188,6 +4188,8 @@ static int mtk_free_dev(struct mtk_eth *eth) metadata_dst_free(eth->dsa_meta[i]); } + free_netdev(eth->dummy_dev); + return 0; } @@ -4983,9 +4985,14 @@ static int mtk_probe(struct platform_device *pdev) /* we run 2 devices on the same DMA ring so we need a dummy device * for NAPI to work */ - init_dummy_netdev(ð->dummy_dev); - netif_napi_add(ð->dummy_dev, ð->tx_napi, mtk_napi_tx); - netif_napi_add(ð->dummy_dev, ð->rx_napi, mtk_napi_rx); + eth->dummy_dev = alloc_netdev_dummy(0); + if (!eth->dummy_dev) { + err = -ENOMEM; + dev_err(eth->dev, "failed to allocated dummy device\n"); + goto err_unreg_netdev; + } + netif_napi_add(eth->dummy_dev, ð->tx_napi, mtk_napi_tx); + netif_napi_add(eth->dummy_dev, ð->rx_napi, mtk_napi_rx); platform_set_drvdata(pdev, eth); schedule_delayed_work(ð->reset.monitor_work, @@ -4993,6 +5000,8 @@ static int mtk_probe(struct platform_device *pdev) return 0; +err_unreg_netdev: + mtk_unreg_dev(eth); err_deinit_ppe: mtk_ppe_deinit(eth); mtk_mdio_cleanup(eth); diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.h b/drivers/net/ethernet/mediatek/mtk_eth_soc.h index 9ae3b8a71d0e..723fc637027c 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h @@ -1242,7 +1242,7 @@ struct mtk_eth { spinlock_t page_lock; spinlock_t tx_irq_lock; spinlock_t rx_irq_lock; - struct net_device dummy_dev; + struct net_device *dummy_dev; struct net_device *netdev[MTK_MAX_DEVS]; struct mtk_mac *mac[MTK_MAX_DEVS]; int irq[3];