From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wr2-f12.google.com (mail-wr2-f12.google.com [74.125.225.76]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 713D14F85D6 for ; Mon, 28 Sep 2026 19:46:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.225.76 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790624771; cv=none; b=UnuP7Eu1JWyKpilWs640tRFXfH4B3u5qNeFf/T5W+xccrpxUuP3sNkOpr4HkJmm+hQw69KO8TIjZ+IIUs84bRLSMvWB3tJ9E6pQuAHQHWP72/FWKp0vS3QywtvbXacUblTf0JfXn4bAOox6wblQtsR5NMOzrpiTnJ3/ayxD+WFw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790624771; c=relaxed/simple; bh=NU4X2VJGcjl2rlOCjM4L+p3D3tqMARtIFAjlFc9hBWY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=PaD+2cCzKBJy+Y1wGkBVq1ZTkrzdOeIhVmQWZ8cWAos12whcaa1rv6T3lRf9vfiMsGREAxT0audXQnsL85IoQLIIsdWgSMby97yiVPYgpVWv1N20OZjM1amLAt5oC1NNhQEe5aAXRLW0mB+2cTosu5+E1q1iKLw9gpfSfOuhc5k= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=RcHX69n7; arc=none smtp.client-ip=74.125.225.76 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="RcHX69n7" Received: by mail-wr2-f12.google.com with SMTP id ffacd0b85a97d-482f635552aso2721526f8f.2 for ; Mon, 28 Sep 2026 12:46:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1790624768; x=1791229568; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to:content-type; bh=rbIAcFETs7Fo7Fiw9hweWROaB2K6gpG5L37UCuTLIIU=; b=RcHX69n733uV9vC1Ky+L+Rql0JjOeAqvo+AYnaGHnOY0ZTcHnGj25T7HjlEGPj5jpl RN/o7Uz0+iy3wXjlBmD4r3JiDiyvrUOXcXpoCjTQF1A1MHP/JOFnuBTRhpqR0eWGDpG/ h3oV6g/lZrI5wpHsLk8mQ9PtvJU5S90Pu1SpYxF4o3It863Gn4QyZ7sm4FKXFwDLfTQ3 WsmijOdlnEV6zNs29byfGwjSDp6QXFB7F5P3uZqY+vN+LDe/YX4uW3ap82f8r7p90Ale S04QaCwH1ZVNTW1yBrIkJhqpl70M5Vp1v0E7RMOLDaIYa7rqW2p1FT6XQdlk8iOohJa9 ttDw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1790624768; x=1791229568; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to:content-type; bh=rbIAcFETs7Fo7Fiw9hweWROaB2K6gpG5L37UCuTLIIU=; b=asqvl+e+scL+qHhdMJzvruGG17e/kGFatNRTo2FoiyCoHlAyP4H3xDOX5hteX8s6d7 4F1XI1riydGtmSnsMuhCl2qlXY9aTwHskgStAuXRUMcnGKA+qFPVV98/nFFFWTAFWCR3 sdhkryfUjDCf2kICd9U+ZGV4v7c+DZ78WBgoQf4U7OxyXi2QX9+TXbOkxO/CgwhOtcmJ 63SApY5qMYZWkm9Ft0Rnzh8URN5/oLVIYlJrBvQvUP1lBHf0u0rTYMiAZF0r3KCqvM6W eaYt8g9F2Tz1WE+pRcmh5nh/6Pl0zNqsvNrwYuHcUl6T+fP7vepl4CpXGmvUkKvVt4qL M/ag== X-Forwarded-Encrypted: i=1; AKwUvBwlurupIYAvtXdP0rqB4vCOJaQLGeWgMLHDcWT7kff1ZrZi/sKldq5yedNCCMXCyfeqeIugUMPv7FBmSuc=@vger.kernel.org X-Gm-Message-State: AFq9FYLnhBkOkWETB6Nu3NhY6xuPJctk7e7+0tu9VGlO/Xo3oOSyflpa 9hSpvEEf3e0/c5rzqNYnUy4DDu0GRiTqwQ1Cz2OGUnu0BJeLp7JuOPp+ X-Gm-Gg: AYBFou2qHHSHVeWQ5yeuToljd7CsDYDuejDi/u9pz7jdxY7lm12eIHHNa6ZtzFPVURX tYn3Z10pSRFSQ55blOfXBtwC9O9HrHrlhI+qXzdiud0esbNm0OTWj9jaMGEUSMni5xbClMawmTi GtgAlgZ5j+VSZXJAJncwmwQ4BUjoZcufPRZe2NWA1NJZRETRhgSQl1Ewz8JzWkwj1xTeA8FPjiH Rk/8Zn7lRSKefnmxAbVI9CkBjhpQlHO9wDZKANlaX9JuS+UgZVOqDRiCPI7XJGPewSLNZQ/UjRg QYLEY6GOUkEqJigCqGobYr7oSNAiuFr4Ll7WmCNMdViDJv9tmgJiWtacfprjafxcpeuYcSqPgVg 3wxqa2J2Xp80XCA3IzoYxT2hlhv/jcBqQ7euthtCxav4nnSp+JuKfEHR+Fq5UoCE76GZI1jiNVb sn1fhjWIQ49jtvIYMmip7QHEc002pBa+mbDcREA7+aTmT7WDKiYjw5JQGN82SAuq6m1ItYktBL/ 3K7a+YkxBVXfQKaLURc2aLm+rREAbL8NONyoq1afetMc4U7SL36S0qxowHboRXI X-Received: by 2002:a05:6000:40d9:b0:487:342:d148 with SMTP id ffacd0b85a97d-48872ac7199mr23494967f8f.38.1790624767700; Mon, 28 Sep 2026 12:46:07 -0700 (PDT) Received: from Ansuel-XPS24.localdomain (host-82-57-191-234.retail.telecomitalia.it. [82.57.191.234]) by smtp.googlemail.com with ESMTPSA id ffacd0b85a97d-48af071532dsm1527706f8f.20.2026.09.28.12.46.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 28 Sep 2026 12:46:07 -0700 (PDT) From: Christian Marangi To: Christian Marangi , Lee Jones , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Vladimir Oltean , Matthias Brugger , AngeloGioacchino Del Regno , "Chester A. Unal" , Daniel Golle , Heiner Kallweit , Russell King , Simon Horman , Joris Vaisvila , linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, netdev@vger.kernel.org, mfd@lists.linux.dev, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Andrew Lunn Subject: [PATCH net-next v24 06/10] net: dsa: tag_mtk: add Airoha variant usage of this TAG Date: Mon, 28 Sep 2026 21:45:05 +0200 Message-ID: <20260928194511.41878-7-ansuelsmth@gmail.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260928194511.41878-1-ansuelsmth@gmail.com> References: <20260928194511.41878-1-ansuelsmth@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add variant of the MTK TAG for Airoha Switch and comments about difference between Airoha AN8855 and Mediatek tag bitmap. Airoha AN8855 doesn't support controlling SA learning and Leaky VLAN from tag. Although these bits are not used (and even not defined for Leaky VLAN), it's worth to add comments for these difference to prevent any kind of regression in the future if ever these bits will be used. Rework the makefile, config and tag driver to better report to external tool (like libpcap) the usage of this variant with a dedicated "Airoha" name. Signed-off-by: Christian Marangi Reviewed-by: Andrew Lunn --- include/net/dsa.h | 2 ++ net/dsa/Kconfig | 11 +++++++++++ net/dsa/Makefile | 2 +- net/dsa/tag_mtk.c | 36 +++++++++++++++++++++++++++++++++--- 4 files changed, 47 insertions(+), 4 deletions(-) diff --git a/include/net/dsa.h b/include/net/dsa.h index 5d12191b6f6f..9824c63ad50b 100644 --- a/include/net/dsa.h +++ b/include/net/dsa.h @@ -62,6 +62,7 @@ struct tc_action; #define DSA_TAG_PROTO_KSZ8463_VALUE 34 #define DSA_TAG_PROTO_MT7628_VALUE 35 #define DSA_TAG_PROTO_KS8995_VALUE 36 +#define DSA_TAG_PROTO_AIROHA_VALUE 37 enum dsa_tag_protocol { DSA_TAG_PROTO_NONE = DSA_TAG_PROTO_NONE_VALUE, @@ -76,6 +77,7 @@ enum dsa_tag_protocol { DSA_TAG_PROTO_KSZ9893 = DSA_TAG_PROTO_KSZ9893_VALUE, DSA_TAG_PROTO_LAN9303 = DSA_TAG_PROTO_LAN9303_VALUE, DSA_TAG_PROTO_MTK = DSA_TAG_PROTO_MTK_VALUE, + DSA_TAG_PROTO_AIROHA = DSA_TAG_PROTO_AIROHA_VALUE, DSA_TAG_PROTO_QCA = DSA_TAG_PROTO_QCA_VALUE, DSA_TAG_PROTO_TRAILER = DSA_TAG_PROTO_TRAILER_VALUE, DSA_TAG_PROTO_8021Q = DSA_TAG_PROTO_8021Q_VALUE, diff --git a/net/dsa/Kconfig b/net/dsa/Kconfig index 4f44bf3ede23..28a249f04a43 100644 --- a/net/dsa/Kconfig +++ b/net/dsa/Kconfig @@ -24,6 +24,13 @@ config NET_DSA_TAG_NONE Say Y or M if you want to enable support for switches which don't tag frames over the CPU port. +config NET_DSA_TAG_AIROHA + tristate "Tag driver for Airoha switches" + select NET_DSA_TAG_MTK_COMMON + help + Say Y or M if you want to enable support for tagging frames for + Airoha switches. + config NET_DSA_TAG_AR9331 tristate "Tag driver for Atheros AR9331 SoC with built-in switch" help @@ -104,8 +111,12 @@ config NET_DSA_TAG_MT7628 Say Y or M if you want to enable support for tagging frames for the switch embedded in the MT7628 SoC. +config NET_DSA_TAG_MTK_COMMON + tristate + config NET_DSA_TAG_MTK tristate "Tag driver for Mediatek switches" + select NET_DSA_TAG_MTK_COMMON help Say Y or M if you want to enable support for tagging frames for Mediatek switches. diff --git a/net/dsa/Makefile b/net/dsa/Makefile index 1f9cc30e9988..7ccaa528a989 100644 --- a/net/dsa/Makefile +++ b/net/dsa/Makefile @@ -29,7 +29,7 @@ obj-$(CONFIG_NET_DSA_TAG_KS8995) += tag_ks8995.o obj-$(CONFIG_NET_DSA_TAG_KSZ) += tag_ksz.o obj-$(CONFIG_NET_DSA_TAG_LAN9303) += tag_lan9303.o obj-$(CONFIG_NET_DSA_TAG_MT7628) += tag_mt7628.o -obj-$(CONFIG_NET_DSA_TAG_MTK) += tag_mtk.o +obj-$(CONFIG_NET_DSA_TAG_MTK_COMMON) += tag_mtk.o obj-$(CONFIG_NET_DSA_TAG_MXL_862XX) += tag_mxl862xx.o obj-$(CONFIG_NET_DSA_TAG_MXL_GSW1XX) += tag_mxl-gsw1xx.o obj-$(CONFIG_NET_DSA_TAG_NETC) += tag_netc.o diff --git a/net/dsa/tag_mtk.c b/net/dsa/tag_mtk.c index c7dc7731675e..f8087d768da6 100644 --- a/net/dsa/tag_mtk.c +++ b/net/dsa/tag_mtk.c @@ -11,6 +11,7 @@ #include "tag.h" #define MTK_NAME "mtk" +#define AIROHA_NAME "airoha" #define MTK_HDR_LEN 4 #define MTK_HDR_XMIT_UNTAGGED 0 @@ -18,6 +19,9 @@ #define MTK_HDR_XMIT_TAGGED_TPID_88A8 2 #define MTK_HDR_RECV_SOURCE_PORT_MASK GENMASK(2, 0) #define MTK_HDR_XMIT_DP_BIT_MASK GENMASK(5, 0) +/* AN8855 doesn't support SA_DIS and Leaky VLAN + * control in tag as these bits doesn't exist. + */ #define MTK_HDR_XMIT_SA_DIS BIT(6) static struct sk_buff *mtk_tag_xmit(struct sk_buff *skb, @@ -99,6 +103,7 @@ static struct sk_buff *mtk_tag_rcv(struct sk_buff *skb, struct net_device *dev) return skb; } +#if IS_ENABLED(CONFIG_NET_DSA_TAG_MTK) static const struct dsa_device_ops mtk_netdev_ops = { .name = MTK_NAME, .proto = DSA_TAG_PROTO_MTK, @@ -107,8 +112,33 @@ static const struct dsa_device_ops mtk_netdev_ops = { .needed_headroom = MTK_HDR_LEN, }; -MODULE_DESCRIPTION("DSA tag driver for Mediatek switches"); -MODULE_LICENSE("GPL"); +DSA_TAG_DRIVER(mtk_netdev_ops); MODULE_ALIAS_DSA_TAG_DRIVER(DSA_TAG_PROTO_MTK, MTK_NAME); +#endif -module_dsa_tag_driver(mtk_netdev_ops); +#if IS_ENABLED(CONFIG_NET_DSA_TAG_AIROHA) +static const struct dsa_device_ops airoha_netdev_ops = { + .name = AIROHA_NAME, + .proto = DSA_TAG_PROTO_AIROHA, + .xmit = mtk_tag_xmit, + .rcv = mtk_tag_rcv, + .needed_headroom = MTK_HDR_LEN, +}; + +DSA_TAG_DRIVER(airoha_netdev_ops); +MODULE_ALIAS_DSA_TAG_DRIVER(DSA_TAG_PROTO_AIROHA, AIROHA_NAME); +#endif + +static struct dsa_tag_driver *dsa_tag_driver_array[] = { +#if IS_ENABLED(CONFIG_NET_DSA_TAG_MTK) + &DSA_TAG_DRIVER_NAME(mtk_netdev_ops), +#endif +#if IS_ENABLED(CONFIG_NET_DSA_TAG_AIROHA) + &DSA_TAG_DRIVER_NAME(airoha_netdev_ops), +#endif +}; + +module_dsa_tag_drivers(dsa_tag_driver_array); + +MODULE_DESCRIPTION("DSA tag driver for Mediatek switches"); +MODULE_LICENSE("GPL"); -- 2.55.0