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 56337C53219 for ; Sat, 25 Jul 2026 20:42:26 +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=8mADYrqjFd+vYjGmvCJ/2AAsFMgwtCupiq81UWlzduQ=; b=XqAR6WCqGIdsUz x9JAdFX+F1ReQO2jKPQxp1du0VtMlCS6wWh0wmixAJxvKqoLk/RPUjPBfy4dYiYTuzs5gMcP/dvUd HTdpDA3l+wC5LGwaqHO7Y9CzQcsQnBTtBBhYCSKaWHTeZsZ3fGGIncpZX6e3SJyIDqc/CSAxvewQD SSO19fh7rJv4v55VjCbJW6MunZbPXYDLlnHmltWLJ4o8Jl/mEudm8oQlfmB8uFxz9qZGEyaaT6wJl wZAR9UXdaPQRsieFSY/V4WxJshnYZ9hD8LaWBop08F9PQH+dL6PzOMLVb62iOCGlro1boPctuVHxY uFtJRcjTHVDeFdvwOegQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wnjCC-00000000hO9-3G19; Sat, 25 Jul 2026 20:42:08 +0000 Received: from tor.source.kernel.org ([172.105.4.254]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wnjCB-00000000hNy-11gT; Sat, 25 Jul 2026 20:42:07 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id 492DC60A6E; Sat, 25 Jul 2026 20:42:06 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 685211F000E9; Sat, 25 Jul 2026 20:42:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1785012125; bh=8mADYrqjFd+vYjGmvCJ/2AAsFMgwtCupiq81UWlzduQ=; h=From:Subject:Date:To:Cc; b=eHbGl3erWwK9qBlKucU2mVX8RqLkfNoj9mxESn1tSNQ1QjYod8EZEpneCuFFyrd1B JTOSw+wOgUcBu8Lt13AsJXrgIoo54IN57TcQgsxgBA8r137+vdy9Pwv8XMG1URwLHU LYsKDtI09O8btZ4EZu0wTPLBJ8eezzo6oovqtbhWCAmi/vB3dLB5DYqe+LfYEepWWH +/K+89KdQObq1Jw9R2o1KFuUMPNYhiLS7fHcnMZn9ydvMo/s/oLE90eQSWB6saToP9 e3o4NccrXguwkAIxnC5JhfQnRDrn7/keQe7x8a19Gaw3E6rUI6vmOWJjqftFI5/uVH tDpihmstgXGgw== From: Lorenzo Bianconi Subject: [PATCH net-next v12 0/3] airoha: add the capability to configure GDM3/GDM4 as WAN/LAN on demand Date: Sat, 25 Jul 2026 22:41:39 +0200 Message-Id: <20260725-airoha-ethtool-priv_flags-v12-0-5136a30b2157@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAAAAAAAC/43S22rEIBAG4FdZcl3LjGd71fcopXiYbEKXZElC2 LLsu9fmphZBiiDo4OePzr1baRlp7V5O926hfVzHecoL5E+nLg5+OhMbU97oOHANeTA/LvPgGW3 DNs8Xdl3G/aO/+PPKgvbeQMyThS6fvy7Uj7cDf+sm2thEt617z5VhXLd5+Tpu3fGo/8PfkSGTg IFH15Pr8fWTlokuz/NyPtidl5RpUTxTRvJovEdCyytKlJRtUSJTgiyJFEVvUFWULCiEFiUZMA1 kXey57clXlCopbFEqUxExEVhpdarfShcUdy1KZ8rqEDVAEhhiRZlfykAzlclUkKhESFJKbivKl pRoUTZTgCp45aN1RBXlCoo3U7lMuYgq2WDQK11RCKXFmz2aU7HEleZRpeRk3VmIJSabGP40RP4 +8gLAS/iDPR6PbxUaaeXAAwAA 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, Jacob Keller , Madhur Agarwal X-Mailer: b4 0.14.3 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 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 v12: - Introduce txq_lock array in order to serialize the access to netdev_tx_completed_queue() in airoha_qdma_tx_napi_poll(). - Set AIROHA_DEV_F_TX_QOS flags in airoha_tc_setup_qdisc_htb() and not in airoha_enable_qos_for_gdm34(). - Link to v11: https://lore.kernel.org/r/20260724-airoha-ethtool-priv_flags-v11-0-686dea300a40@kernel.org Changes in v11: - Fix possible bql races moving the net_device between different QDMA. - Use atomic APIs for airoha_gdm_flags. - Link to v10: https://lore.kernel.org/r/20260722-airoha-ethtool-priv_flags-v10-0-d2562c5dd942@kernel.org Changes in v10: - Fix a theoretical race condition between tx completion NAPIs moving the net_device between different QDMA. - Rebase on top of next-next main branch - Link to v9: https://lore.kernel.org/r/20260721-airoha-ethtool-priv_flags-v9-0-9c15d8b71a56@kernel.org Changes in v9: - Rebase on top of next-next main branch - Link to v8: https://lore.kernel.org/r/20260703-airoha-ethtool-priv_flags-v8-0-015ba5ac89ee@kernel.org Changes in v8: - Rebase on top of next-next to fix conflicts. - Link to v7: https://lore.kernel.org/r/20260701-airoha-ethtool-priv_flags-v7-0-b4153bd44428@kernel.org Changes in v7: - Fix ETS stats accounting in patch 2/3 - Reset ETS stats accounting in airoha_dev_set_qdma(). - Link to v6: https://lore.kernel.org/r/20260629-airoha-ethtool-priv_flags-v6-0-86bc600d31bc@kernel.org 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 (3): net: airoha: rename airoha_priv_flags to airoha_dev_flags net: airoha: fix ETS QoS stats counter underflow and cross-channel corruption net: airoha: defer GDM3/GDM4 WAN mode and GDM2 loopback to QoS offload drivers/net/ethernet/airoha/airoha_eth.c | 265 ++++++++++++++++++++++++++---- drivers/net/ethernet/airoha/airoha_eth.h | 33 +++- drivers/net/ethernet/airoha/airoha_ppe.c | 9 +- drivers/net/ethernet/airoha/airoha_regs.h | 1 + 4 files changed, 263 insertions(+), 45 deletions(-) --- base-commit: 04026c998c24ac47eb76886b9790c5710b603eb4 change-id: 20260606-airoha-ethtool-priv_flags-b6aa70caa780 Best regards, -- Lorenzo Bianconi