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 47B4B27510E for ; Thu, 15 Jan 2026 07:57:04 +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=1768463824; cv=none; b=at4L2LM7cqcrq4dLSZ5hcqhuheGJX94DFthPF9QAjp9mNGWed6mmDK7RFfXwEaYseBjGDNKZ/p5Xe7gPtwS7zC5vyAvaHgJf8LaAdcHqLjCZN83ZRZabCo30/+63t7Dpb3US0tXILGJslTe7ib57nB85aPu7MbJFbTkRlLlDnq8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768463824; c=relaxed/simple; bh=z7M1gJSxco/n4ZsPehNhTapu74iwMGfHlhkpGIYRppU=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=nlwhLoYfYvEX0aGcPT2cVVW7I+C2/DhMXxM8TzAtkjO21L62UdZza26htUHh0kugzwKk0p0uDscDbM5Q5LQN4TmKm/XPrp6/91ZnJNEBVh6gmYGnLmOIuDsS5GKEwG9hCNeMR2lZxVZ283+n5UrwepH/jY/UyG9L5OqlonPvXbw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=YxUWpxsP; 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="YxUWpxsP" 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> 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="agj4UNEhb8R3CoY5" Content-Disposition: inline In-Reply-To: <20260115064043.45589-1-sayantann11@gmail.com> --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--