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 EFF33C43458 for ; Mon, 29 Jun 2026 16:17:55 +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:Cc:To: Content-Transfer-Encoding:Content-Type:MIME-Version:Message-Id:Date:Subject: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=VGY/3EzI62yFaI09WF4nYhkRMXoCQ4SWEaDV21wSZvE=; b=PDdZLK7lZLvnYq 0XSv0VhVGovWnPPKJnnKeEXAzWVKQQK1iH4krU0BkZIfKGKkN749DDw8u25X6WZzUjycPClNt3vH1 v/8PvKipLNtn4zSPipaY3JvEx/wlRb65XrRrmc7AZUKMAHp0No0pp9+mVvsihaLGPQ9bAR9b4cm1G BEGiW5mifr7sc1RgPFy3Sacp+SG0eqk347GTOhR0Gf093bbC1y5u0zezY64xdAH8OTyJHZpHTqSZy 298hhpYdDSqBwRJQ/IcCs0OXc48h7MSYpTaDWtvRBaff7g5GunjtHzj1U4lRdxBQ6RLk23nQSWDFR 5y5s1V0xdP/6wHO0Fc/A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1weEgD-0000000FBTE-2Jdw; Mon, 29 Jun 2026 16:17:53 +0000 Received: from sea.source.kernel.org ([172.234.252.31]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1weEgB-0000000FBSh-34Uj; Mon, 29 Jun 2026 16:17:51 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id 255C2435EA; Mon, 29 Jun 2026 16:17:51 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7D47C1F000E9; Mon, 29 Jun 2026 16:17:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1782749871; bh=VGY/3EzI62yFaI09WF4nYhkRMXoCQ4SWEaDV21wSZvE=; h=From:Subject:Date:To:Cc; b=fueaL2uSLEFm8xGRg+6kNXydNXBZ3jt5Dkw/8CoZxSIIzgEAalHhudEgU14lJCe6N +oyh7CK2gK8o2Re/1A93HVCvhyQZXyxFuJkfbhAxlvXzgDrMW0PWp4m4CoZ8nRjyfY lWr5+mPfRxx8+P2vpHoOu/FgkagKOChxuBAEgobRuFOmeIMCNEJpcIXvpL7QBG6rKz JcA5XX5L4yMWOc+LKhTGr+OuySXGiXRP1vY4R408DO9n5XKJw8+GzTerAzQ7fHJG4T fUS2XesV3+wGKD9pTgyoOwp5BRR+plec1XuUH6foSVjc+uHKj6bc/7WbCce9YemvCx Xj/eOVjwkoTxg== From: Lorenzo Bianconi Subject: [PATCH net-next v6 0/2] airoha: add the capability to configure GDM3/GDM4 as WAN/LAN on demand Date: Mon, 29 Jun 2026 18:17:28 +0200 Message-Id: <20260629-airoha-ethtool-priv_flags-v6-0-86bc600d31bc@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAAAAAAAC/43QwWrEIBAG4FdZPNfiaKKmp75HKYtrxkQadFGRX Za8eyWnlEAoAwM/w3wD8yIZk8dMPi4vkrD67GNoQb5diJ1NmJD6sWXCGZesFTU+xdlQLHOJcaH 35OvVLWbK9CaNUcy2phlp+/eEzj82+4sELDTgo5DvNpl9LjE9t6MVtvk//AoUaMfgxu3gcHDw+ YMp4PIe07Sxle8pdUbxRqmOW2UMIGh+oMSe0meUaJRAjWK0winoD1S3o4CdUR1lVDLUg3VcOzQ Hqt9TcEb1jbIAIzLdaTn+/dW6rr+RN8Re+QEAAA== X-Change-ID: 20260606-airoha-ethtool-priv_flags-b6aa70caa780 To: Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Lorenzo Bianconi Cc: Simon Horman , Alexander Lobakin , linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, netdev@vger.kernel.org, Madhur Agrawal X-Mailer: b4 0.14.3 X-BeenThere: linux-mediatek@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-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org Add the capability to configure GDM3/GDM4 as WAN/LAN on demand when QoS offload is created or destroyed. Make dev->qdma an RCU pointer so the TX path can safely dereference it without holding RTNL. Introduce airoha_qdma_start() and airoha_qdma_stop() helpers. --- Changes in v6: - Rebase on top of next-next - Add patch 1/3: "rename airoha_priv_flags to airoha_dev_flags" - Drop patch 2/3: "refactor QDMA start/stop into reusable helpers" - Link to v5: https://lore.kernel.org/r/20260611-airoha-ethtool-priv_flags-v5-0-c11de08486d1@kernel.org Changes in v5: - Add patch 1/3: use int instead of atomic_t for qdma users counter - Protect dev->flags with flow_offload_mutex mutex. - Introduce AIROHA_PRIV_F_QOS in order to handle better WAN/LAN switching. - Link to v4: https://lore.kernel.org/r/20260610-airoha-ethtool-priv_flags-v4-0-60e89cf28fea@kernel.org Changes in v4: - Move back QDMA TX/RX DMA enable to airoha_dev_open()/airoha_dev_stop(). - Configure GDM3/4 as WAN if GDM2 is not available in ndo_init() callback. - Protect qdma pointer in airoha_gdm_dev struct using RCU. - Rely on rtnl_dereference() to access qdma pointer in the control path. - Add airoha_qdma_start() and airoha_qdma_stop() utility routines in patch 1/2 - Link to v3: https://lore.kernel.org/r/20260608-airoha-ethtool-priv_flags-v3-1-3e8e3dc3f715@kernel.org Changes in v3: - Do not introduce ethtool private flags support to configure LAN/WAN for GDM3/4 and rely on tc qdisc offload for it instead. - Set GDM3/4 ports as LAN by default. - Move QDMA TX/RX DMA enable from airoha_dev_open() to airoha_probe() and the corresponding disable from airoha_dev_stop() to airoha_qdma_cleanup(). - Link to v2: https://lore.kernel.org/r/20260607-airoha-ethtool-priv_flags-v2-1-742c7aa1e182@kernel.org Changes in v2: - Rework airoha_dev_set_wan_flag routine - Enable GDM_STRIP_CRC_MASK in airoha_disable_gdm2_loopback() - Do not always reset REG_SRC_PORT_FC_MAP6 in airoha_disable_gdm2_loopback() but use the same condition used in airoha_enable_gdm2_loopback(). - Link to v1: https://lore.kernel.org/r/20260606-airoha-ethtool-priv_flags-v1-1-401b2c9fe9f1@kernel.org --- Lorenzo Bianconi (2): net: airoha: rename airoha_priv_flags to airoha_dev_flags net: airoha: defer GDM3/GDM4 WAN mode and GDM2 loopback to QoS offload drivers/net/ethernet/airoha/airoha_eth.c | 231 ++++++++++++++++++++++++++---- drivers/net/ethernet/airoha/airoha_eth.h | 19 ++- drivers/net/ethernet/airoha/airoha_ppe.c | 9 +- drivers/net/ethernet/airoha/airoha_regs.h | 1 + 4 files changed, 223 insertions(+), 37 deletions(-) --- base-commit: 805185b7c7a1069e407b6f7b3bc98e44d415f484 change-id: 20260606-airoha-ethtool-priv_flags-b6aa70caa780 Best regards, -- Lorenzo Bianconi