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 639F93644D4; Fri, 10 Apr 2026 20:49:53 +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=1775854193; cv=none; b=ONNAPJaM1NiE4Kg/yFrYOJI3w56JAoZrpx6dWb5RWAIvqfhtcOAhapyoxefQMmTXTYsRsvd//nAfG7tr7J+hcQvnJKJw/pvHYwE7bfLWIPVzmIuyA4Op+IDu1DgZK+1MI62f+sezb8aEl7rqx5QLOitXavDWOGH+vYTiVyYi32o= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775854193; c=relaxed/simple; bh=BA4rVAHrRJzqSSgJrpMLT50mB/MklDSW0pj2JlzB7vE=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=ezKcuu1Qv/DmNN0vAceUR3FSDM+UdRQgZBYbIQSW8rqEmmTCe5I8QTZRqcxbfBGsT+jAgHWt2Lhv4FoaR56jq3l4WwnlrLwhB1VvEtLPFcjy0BF0U5Nytj6fEffTQGRPAS5pk69jc1MtMN5F+L1CDoLBi8WGfSPwGm7Mxu10KIE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=KyVIhkT8; 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="KyVIhkT8" 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> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit 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 :)