From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7D4392FFDE3; Fri, 10 Apr 2026 07:37:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775806634; cv=none; b=IZAasSqDsyd/4t69B4JkNCocXFNORo/WecxtPL+qYdLqD+/aqrNp6Zet+HVGjzBOOeLoK28h8NFvdZ1JsCdloZlm0T1YzLW+vqPIS5mIbVeEaqKuhlqzRdUBfkZ9LBNmsw1eYEVmwWXFMoPBHuskQ+hwnSfooTJrC2uriZIoDLw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775806634; c=relaxed/simple; bh=L+afuylxddCzC0qlWKdr8ONiPG74QuiVnL53Ek0mUU8=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=S/WL8dhTx+v/gnqpXZ6EXxNdLdDF8yAKds6/2nt/aYOgFMQW1bsO3TTTT8+xKo9GBdxDcuGSm+dopxUBUyYtVY3a9z60erMP9Gu8gO9G1a2DLYN/QltR3PlZr9wgwXfn7E1KWVejNzcU5ge5kOhPRZ1PZ7w8+c2gni354+F4xfE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=W58v/jDC; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="W58v/jDC" 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> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: 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> --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--