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 5FA08D29FFA for ; Thu, 15 Jan 2026 07:57:15 +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=+kOkEvWB8IjrnJSFWvfV7NsR+wn8pdfHtmGf3dF5Aic=; b=N/FK/UekNk2Kr9NGU34kkQmZeQ K+3gmB9P3MFroQDO+mavQjBPitSip2s1YqWNBfz5xA6DqpdZgmtwhpZL1SO+YGc+ExCIyn7HPZyWv /fJo5VAHUTzObVc1MGFZInDG+IetUaSGxmKZhABp7jotBXkAc4Gw0Qj5TvA95W+u8hdNIJ/xUMiUy 77CBHSA9U7qFHPfJjxrKtHpAhJB/OP1W1v5z1NEOfTNQzoru+3xNQFaFbMXHDEjjBu6PcBrl0wuo4 +ICaXhrRQOTUB8foQlY708u9SvI5Adj7yThnru7sXGkp2KFBdi0PbnX2GVlVJ7ZutoyTriSn+AKX7 IEebbblg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vgIE6-0000000BxNq-3Bop; Thu, 15 Jan 2026 07:57:06 +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 1vgIE5-0000000BxNg-1ZbL; Thu, 15 Jan 2026 07:57:05 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id 3380960167; Thu, 15 Jan 2026 07:57:04 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 899D1C116D0; Thu, 15 Jan 2026 07:57:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1768463823; bh=z7M1gJSxco/n4ZsPehNhTapu74iwMGfHlhkpGIYRppU=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=YxUWpxsPOzHxOA0tGdbH62iRX4bmlHdJ4ghaK0B9VqEVDKqGzIE19FruKFYFVBVGK cWQqk+drILJSEIGsBFzk26fMSBtflhxTa6ReUMaFeCtJ7SHcwzGsq5sgpmHIvMBV3d Zzo3ZgeYY1cL8RzYLYSI9NTRn4yXyXpJZ0zF+mPwTsObq8xoOEOeTYaQT2Bc6/sB/Z xFxQ8jF8NHhhmVBGvlFHNEY+uVDBPWrc49KP+AmWf8VfMGN3lyy7Qj5rnz4/WSMNRr O+bbaBgjpVLIC3fc1Yy9oHKzR46sxzkO/Jccdz8C5Ra1ycdyXERKoyyHLIzm2EgpYM hvs1kzMCSec1Q== Date: Thu, 15 Jan 2026 08:57:01 +0100 From: Lorenzo Bianconi To: Sayantan Nandy Cc: linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, netdev@vger.kernel.org, sayantan.nandy@airoha.com, bread.hsu@airoha.com, kuldeep.malik@airoha.com, aniket.negi@airoha.com Subject: Re: [PATCH] net: airoha_eth: increase max MTU to 9220 for DSA jumbo frame support the industry standard for jumbo frame MTU is 9216 bytes. When using DSA sub-system, an extra 4 byte tag is added to each frame. To allow users to set the standard 9216-byte MTU via ifconfig ,increase AIROHA_MAX_MTU to 9220 bytes (9216+4). Message-ID: References: <20260115064043.45589-1-sayantann11@gmail.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="agj4UNEhb8R3CoY5" Content-Disposition: inline In-Reply-To: <20260115064043.45589-1-sayantann11@gmail.com> 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 --agj4UNEhb8R3CoY5 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable > This change ensures compatibility with common network equipment and jumbo= frame configurations. can you please provide more details? Regards, Lorenzo >=20 > Signed-off-by: Sayantan Nandy > --- > drivers/net/ethernet/airoha/airoha_eth.h | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) >=20 > diff --git a/drivers/net/ethernet/airoha/airoha_eth.h b/drivers/net/ether= net/airoha/airoha_eth.h > index fbbc58133364..20e602d61e61 100644 > --- a/drivers/net/ethernet/airoha/airoha_eth.h > +++ b/drivers/net/ethernet/airoha/airoha_eth.h > @@ -21,7 +21,7 @@ > #define AIROHA_MAX_NUM_IRQ_BANKS 4 > #define AIROHA_MAX_DSA_PORTS 7 > #define AIROHA_MAX_NUM_RSTS 3 > -#define AIROHA_MAX_MTU 9216 > +#define AIROHA_MAX_MTU 9220 > #define AIROHA_MAX_PACKET_SIZE 2048 > #define AIROHA_NUM_QOS_CHANNELS 4 > #define AIROHA_NUM_QOS_QUEUES 8 > --=20 > 2.43.0 >=20 --agj4UNEhb8R3CoY5 Content-Type: application/pgp-signature; name=signature.asc -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTquNwa3Txd3rGGn7Y6cBh0uS2trAUCaWidzQAKCRA6cBh0uS2t rE5mAQDNH43QGKQqdK54O/WNSaz5NO5TROfHNgllhMJoY2J7gAEArEqFD7ASdBH5 PfGPjeC1j0qi9Ysjn4GYqMIXUyyIWAQ= =JgeZ -----END PGP SIGNATURE----- --agj4UNEhb8R3CoY5--