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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 80E64F45A0C for ; Fri, 10 Apr 2026 20:50:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Subject:Cc:To: From:Date:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=beSRkMl/EZljPX3wONrLjzs8nZ/qaSudU/qHKAOssnE=; b=xMdtGyt+bazVyjb+01zGE8OOma giYTGqHlr758ax5M5BWiLFbG3k8VmQJLlFjd/KuwQMsyPEahmargzBv/Ze7NVPvueaKElnFNW8Ftl 7q+Si1ZoYCf5b3v+NdzrKvYszRj0iDWHcICa4+NRKHKVA+2ad4FxpEvjBt4Gfw/Jn/ZuVC58uhH8n Zxe1imqoV6+61nsApS4MU70PBFSBOT0S3u1uFxfxyF4ddF+K83iyIkvOoBRp/qSuOFQmp4MCwzFUJ Z0IOiXOI2QPI732VAXA1Caj/ZNIqxlRI7AgmtHE6lbko56KLUxYrnFB/pc+C1GvVALSAPpaVc9Dhc ufrEnTTw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1wBInb-0000000Cmnu-2HZl; Fri, 10 Apr 2026 20:49:55 +0000 Received: from tor.source.kernel.org ([172.105.4.254]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1wBIna-0000000Cmnb-10d0; Fri, 10 Apr 2026 20:49:54 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id 5D7A960141; Fri, 10 Apr 2026 20:49:53 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7AA9AC19421; Fri, 10 Apr 2026 20:49:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1775854193; bh=BA4rVAHrRJzqSSgJrpMLT50mB/MklDSW0pj2JlzB7vE=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=KyVIhkT8XM9inBfNeWjmFSxdEzhz83AVmlYNyXhwaY0E3HVb8RbJaopAjQ8YBeugV RqGuCy+Oz+mOhlVHYFEDF9y9zx+LX5cBCWvSVVysUyIQv0+oTQdY+lr8xHpFQXssuL ZHOEWiBr63q34suV665uO5LK0jXLVhHq0BqBjX2YWqqkYh9HHEt5kVdhug+GKUafGG wumlqC7N/G6ZyQ0+iIgDiuSMZIuVzRSt3U9OHDQ+36zXlEM18QYKIeB6dfYBdVStbS mzfwR2IL5Judnz6GTRObeLKvyBnnOmcGLIc5JW9VSW4yNX4ZOmqb++eWWsfKoIR02A rQwwBAU8mOqQg== Date: Fri, 10 Apr 2026 13:49:51 -0700 From: Jakub Kicinski To: Lorenzo Bianconi Cc: Andrew Lunn , "David S. Miller" , Eric Dumazet , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Christian Marangi , Benjamin Larsson , linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, Xuegang Lu Subject: Re: [PATCH net-next v3 00/12] net: airoha: Support multiple net_devices connected to the same GDM port Message-ID: <20260410134951.6f4ee0f2@kernel.org> In-Reply-To: References: <20260406-airoha-eth-multi-serdes-v3-0-ab6ea49d59ff@kernel.org> <20260409195950.74e4bc97@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, 10 Apr 2026 09:37:11 +0200 Lorenzo Bianconi wrote: > > On Mon, 06 Apr 2026 12:34:05 +0200 Lorenzo Bianconi wrote: > > > EN7581 or AN7583 SoCs support connecting multiple external SerDes (e.g. > > > Ethernet or USB SerDes) to GDM3 or GDM4 ports via a hw arbiter that > > > manages the traffic in a TDM manner. As a result multiple net_devices can > > > connect to the same GDM{3,4} port and there is a theoretical "1:n" > > > relation between GDM ports and net_devices. > > > > Looks like this driver uses page pool. > > If you're sharing the same page pool across multiple netdevs > > it must not be linked to a netdev. > > are you referring to slow.netdev pointer? If so, this is not set in airoha_eth > driver. Yes. Alright, thanks for checking. Pretty sure I saw it set somewhere in a file called airoha* but must be another component :)