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 63012E9904A for ; Fri, 10 Apr 2026 07:37:25 +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:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=L+afuylxddCzC0qlWKdr8ONiPG74QuiVnL53Ek0mUU8=; b=K2c7o7e0njetXQXOz6mJg9MXvL Dr4RV4Y505Bxv7qmUmyglvsgapFfrnbEhflBgy+5DPMsiamgVJaJAtF81W3SrgYYywrl1SstAE+i3 422qi/qqq4kmJZxAs6Pg8bIdRcIjGU7mPvnRNl1psZBIFnDQATcn5i8qDGmBk6BVgepPFlf19U6zH 3W5Wq2Gg2Fakx0dBW6tUNw5UQoiDLqLTdAW4RpM8UDF5qg7bukdj7N2ZS9RaLx1J3DsxA8Sv1eXAw bxMk6YVQ72r/IJkeYtwk+WkirRp7hXRFZiMDyIqxa+QE71c6PcHzByKcVHD6/ChLOhSvC/1IfR2uQ XZ9R8tjQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1wB6Qe-0000000BkJV-1oog; Fri, 10 Apr 2026 07:37:24 +0000 Received: from sea.source.kernel.org ([2600:3c0a:e001:78e:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1wB6QW-0000000BkCv-1SZ5; Fri, 10 Apr 2026 07:37:17 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 398D143972; Fri, 10 Apr 2026 07:37:14 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 94982C2BCB1; Fri, 10 Apr 2026 07:37:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1775806634; bh=L+afuylxddCzC0qlWKdr8ONiPG74QuiVnL53Ek0mUU8=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=W58v/jDCVmzbiO8lRxEyIcpgoP32tZO4PNUn8ztkh4iNldj9YSNYz8goQA43ylEzb uyiFmdjODWRke/cKBQq97+3gWycaGn5vHV/NoQrJmfLMxo8EoG8fU+YBGfwr0CQh/M VZMwFopLcpUnpwb03e6Al+mZhXauWjqugObkCK/k3cSneie+QMU6302lQ2kJcm/2r+ I0K+2fZK0zymB4xPUCB6o8U5+/6LC3fDjoPA8EU9JwYGv66H0wNwKFlEKF3D5lR/Rv cAFMC6oUyt6yLJVmKTNYOJB+6sRtN9DrMYsrHofbLKVg1w3sRDlZ9rASGdk7KDSlnq kvJv2lIL0Q58A== Date: Fri, 10 Apr 2026 09:37:11 +0200 From: Lorenzo Bianconi To: Jakub Kicinski 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: References: <20260406-airoha-eth-multi-serdes-v3-0-ab6ea49d59ff@kernel.org> <20260409195950.74e4bc97@kernel.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="NmDR2XRCUQIi1brc" Content-Disposition: inline In-Reply-To: <20260409195950.74e4bc97@kernel.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260410_003716_407095_FAA47E32 X-CRM114-Status: GOOD ( 12.15 ) X-BeenThere: linux-mediatek@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-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org --NmDR2XRCUQIi1brc Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable > 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 c= an > > connect to the same GDM{3,4} port and there is a theoretical "1:n" > > relation between GDM ports and net_devices. >=20 > 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. Regards, Lorenzo --NmDR2XRCUQIi1brc Content-Type: application/pgp-signature; name=signature.asc -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTquNwa3Txd3rGGn7Y6cBh0uS2trAUCadiopwAKCRA6cBh0uS2t rCpsAQCwzG/SFe7EZ5FhdmGC1hKji7gkM+WgbUWiUJzcKeYNpwD/UHwDushvGmqd Qs42s/tZtg4WFpVh0jcCdmdhzxv23gI= =dEFl -----END PGP SIGNATURE----- --NmDR2XRCUQIi1brc--