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 6A20539448F for ; Wed, 1 Jul 2026 08:10:02 +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=1782893404; cv=none; b=I4MITteKfMSYX2LGi5MpR59dVb4XejvEL5+cUK/D11imr9MW9Y33hLRSCahtGhGyUkFsOtx0lFSeVb1XBnaR337R9uy3sTRVAD2rCQIybejRDu/XmWlZtXfRROx6uQh/m9vY5RVv3GCBBG32fCfHKk4OqoIssd0rrkSEmY9FxHc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782893404; c=relaxed/simple; bh=yTRawrKVegQG5BUoTT/+9E9+UM7+4PTuqDCiCmLEKxY=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To:Cc; b=mEgSdeR+iib0T6pFtsAr2BNXw8LvcXk8HRxKVAxXrFbzLxJsiXkBp6XxPfv4zZaahe0aWH2IBSYMZzwb2SWu/JrzTMuD8HSIF/LLrSxlkmN1YmZb4kBCpdxhPiG8csboCovS0YionRiQ1uytbv/Xf+Sm9NGSvWoOi3EpZEHo9dI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=OC4rkXT8; 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="OC4rkXT8" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 90E1E1F00A3A; Wed, 1 Jul 2026 08:10:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1782893402; bh=mFHD8RRGJkLeLGm/699c6/1NPhNrhPx5wfXpMOoTjPI=; h=From:Subject:Date:To:Cc; b=OC4rkXT8wZoc1FGaN/bsXZNkwylvmxM3DF3XkjnaolvmlcuodcpxThi+y0YIaEYRV pY4K6TZXrU8vpjP0RZmurbpD2aJFJBvQWrEdZM3uPhr32XjZwjuooj1973nCOlVs6j Wlqs/C6xcckOu3QwjKTkgqRIKkjU+PiSnYJLFvSyjld4LUOK6z0fDDIejGOcHBNETG RWobs2SNwGY1H7AREqtOPRVC5gI5KNWsy55MJ4Ew03Vi6h4wxnQMdfONMKZBg1QJXa kAwkRLv4IbGcK9Fko8C2L3j7dj8o3cymC5r3VBGfHhCSoeY2L08DX/t/64fG0PJefX WBE4lZnysLhOQ== From: Lorenzo Bianconi Subject: [PATCH net-next v7 0/3] airoha: add the capability to configure GDM3/GDM4 as WAN/LAN on demand Date: Wed, 01 Jul 2026 10:09:24 +0200 Message-Id: <20260701-airoha-ethtool-priv_flags-v7-0-b4153bd44428@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/43Q0WrFIAwG4Fc5eD1HolbtrvYeYwxrYysr9WBLO ePQd5/0ylEoIxD4CfkCebKFcqSFvd2eLNMWl5jmEszLjfnRzQPx2JfMBAgNpbiLOY2O0zquKU3 8nuP2FSY3LLzTzhnwpVlgZf+eKcTHYX+wmVY+02Nln2UyxmVN+ec4uuEx/4e/IUeuADvh20Btw PdvyjNNrykPB7uJmjJXlCiUUcIb55DQihMla8peUbJQkizJ3stgsDlRqqIQrijFgWsg2/ogbCB 3opqawiuqKZRH7Amssro//0pXlGivKF0oqzuvAXqJnf9D7fv+C1idWAdEAgAA 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 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 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 | 239 ++++++++++++++++++++++++++---- 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, 233 insertions(+), 42 deletions(-) --- base-commit: 1c664ec4b9ea827b609d296921ed5bad8a40a158 change-id: 20260606-airoha-ethtool-priv_flags-b6aa70caa780 Best regards, -- Lorenzo Bianconi