From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 83C564399C8 for ; Wed, 22 Jul 2026 20:44:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784753060; cv=none; b=PZOq4gXMJc1xpyToWBW1wATj4s4l4qTvsCqzVraNLPgPfb4CGHvjIEWxkUOVr822JaU0IW9jmCUzYRenYSbrHO+cgPrHV8b9YC03dDSge8KwF9Bna8HkFBDusL4xCr9PmEYqxCDp6QduXhi8SSrwENSVn+PM1qyHIByjuXbW4ps= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784753060; c=relaxed/simple; bh=+GAiPqi9ucC/aN8wdlHuUQWN+puaio11WAXKJNliJNw=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To:Cc; b=QrQcY2CZ9+VTH7xkJSTC8tFs1ZkHta+aHHoqb1cubXEVxaXY/D2u/5eskX9G5b4fQcWZE2WAResq9/XABVj0+ipXekJW2+mBjaLrt3WdqkDXSKamFxJMxTXpFpjCs/m+Qpo+j8oFisFzDES5IQy7faKnUUEH5RYOX7FEmLr1zT0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=eYk0EA9P; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="eYk0EA9P" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 940771F00A3D; Wed, 22 Jul 2026 20:44:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1784753059; bh=Zztw9dliJ8CpVCPBMITrdBqyBV3IdyTXCICScSVRTF0=; h=From:Subject:Date:To:Cc; b=eYk0EA9PiwzK+JZ/AU+PF91SmVSKKHHpjucfjA0mvDORmw6zRC7MfdsjNiwZSAuyH Z6hrgA7hsKLT+ZrNskVvsbOYpcr4feAIisPO9zuZUlDowQZuMZ1KAZJ/+M4FQP/yfU LiX+eCYUskhbn51HawadM5dbuJ70wbrBShvRx2uWwlBjqzdP22p4UACrDsGAFxE0F+ rW19rNcyS+lTuXxzEXzdcwqY0U3mtc9c+6S8/ecZSt9EsmsuPkuxVvz+oNr1pxFoIV p+0St/cE12qmvNQ7JFARaN85qASNMxQ5xXBCCq69AKwb0z0j3lHbFWYhf8TAX5OtAP ZJq5RSOLAwqzQ== From: Lorenzo Bianconi Subject: [PATCH net-next v10 0/3] airoha: add the capability to configure GDM3/GDM4 as WAN/LAN on demand Date: Wed, 22 Jul 2026 22:43:59 +0200 Message-Id: <20260722-airoha-ethtool-priv_flags-v10-0-d2562c5dd942@kernel.org> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAAAAAAAC/43Q22rDMAwA0F8pfp6H5bv7tP8YY/iiNGYlKU4IH aX/PpOXeQTMMAgsoSOhB1mwZFzI+fQgBbe85HmqH2AvJxJHP12Q5lQThDOuWX3U5zKPnuI6rvN 8pbeSt8/h6i8LDdp7w2INlpHafys45PuOv5MJVzrhfSUftTLmZZ3L9z51g73+D38DClQyCDy6A d0Ab19YJry+zuWysxtvKdOjeKWM5NF4DwiWHyjRUrZHiUoJtChSFIMBdaBkQwHrUZIyqhlaFwd uB/QHSrUU9ChVqQiQkFlpdTreSjcUdz1KV8rqEDVjSUCIB8r8UoZ1tzKVChKUCElKye2Bsi0le pStFAMVvPLROsQD5RqKd7dylXIRVLLBgFf6D/V8Pn8AmhyGzyYDAAA= 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 Agrawal X-Mailer: b4 0.14.3 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 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 | 268 ++++++++++++++++++++++++++---- drivers/net/ethernet/airoha/airoha_eth.h | 26 ++- drivers/net/ethernet/airoha/airoha_ppe.c | 9 +- drivers/net/ethernet/airoha/airoha_regs.h | 1 + 4 files changed, 261 insertions(+), 43 deletions(-) --- base-commit: 88f380ef2304db4c68bc4bf14fc6c1604f6dd15c change-id: 20260606-airoha-ethtool-priv_flags-b6aa70caa780 Best regards, -- Lorenzo Bianconi