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 B7719C44500 for ; Fri, 3 Jul 2026 09:20:17 +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=8avXWQARkeiSCL69SLt7SOMVDKzGcDbduYcPsftLroI=; b=CC2JZIU/lR/vy2 GkjhnW4TthPY3WUgI0rqTf+xaXERFxvMFeQ73l/1ZEXtJ4vgu2o513UWcHumdrFAkKSKALWdxr+e1 5v2HdEaE0uF735fuP9ilZd2JF5vfsDTmhncknyve8bpVlgxkiAtQ3Yg1mC072OdfwXLCcielSw1d4 GeZtu0wpA52IOSp67Qb6RPBzHXHTUDZEEYTGhidrPEMFQ/WI3STsUBclqNutcljllv4WxMWXgLFYw 9kyw98caur4Okr/03qaO+wwwWSPunWPpzmkA3C0WIh+kWnwOFdELnWJszvjzrWKRlqCk4b5n/Z2zk yds7odChYcNGjV6ZNLrw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wfa4B-00000006Snu-0Qam; Fri, 03 Jul 2026 09:20:11 +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 1wfa4A-00000006Sng-17hk; Fri, 03 Jul 2026 09:20:10 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id 48B5F41173; Fri, 3 Jul 2026 09:20:09 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A265C1F000E9; Fri, 3 Jul 2026 09:20:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1783070409; bh=8avXWQARkeiSCL69SLt7SOMVDKzGcDbduYcPsftLroI=; h=From:Subject:Date:To:Cc; b=SJUij5X3FQRUPi5L1yrtICjMKHvaVmCOxHsENFe7wPDzYHYGKRvI4OehI0tjGBEBL BQcGAnPEVGszTJRfnjhm0rZKl2nDmaOEGEtdZQCMp4rl87M1iN3lo5c2hY4dMXSw8A WuYvOTtRDCnl7NqqoF5sPpim/vswLVhEEMWNUEYmtaQlhNu0LZV3y1mYI/MLDKw+O4 B5hqa4sxZxOejJMAZaTjo1gqCh5kqoEKy/x2fEOPvwRzCZ0hKnXOQ0ASiYfhJAJplI 6S57VSUKqYb0nY1ZelWAQRZIHoynkhGtq/QRU0HzT8O9zg2G0Of6Xuhq6s6LIIeTyp k5EDduz4WgVhQ== From: Lorenzo Bianconi Subject: [PATCH net-next v8 0/3] airoha: add the capability to configure GDM3/GDM4 as WAN/LAN on demand Date: Fri, 03 Jul 2026 11:19:24 +0200 Message-Id: <20260703-airoha-ethtool-priv_flags-v8-0-015ba5ac89ee@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAAAAAAAC/43QX2vEIAwA8K9y+DyHUav2nvY9xhj+ia3sqIct5 cbR7z7pyzoKMgKBEPJLyJPMWBLO5Hp5koJrmlOeamFeLsSPdhqQplBrwhlXrAa1qeTRUlzGJec bvZe0fsabHWbqlLWa+ZoMI3X+XjCmx26/kwkXOuFjIR+1M6Z5yeV7X7rC3v+HvwIFKhk47vuIf YS3LywT3l5zGXZ25UdKtyheKS2519YCguEnShwp06JEpQQaFMGLqKE7UfJAAWtRkjKqGJreR24 i2hPVHSloUV2lPEBAZqRR4fwrdaB436JUpYxyXjEWBDh/ovQvpVnzKl0pJ6ETLkgpuflDbdv2A +kLOUiPAgAA 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-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 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 | 253 ++++++++++++++++++++++++++---- 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, 246 insertions(+), 43 deletions(-) --- base-commit: 6fb33632323a396c9dc2bb9bea483e013e547d57 change-id: 20260606-airoha-ethtool-priv_flags-b6aa70caa780 Best regards, -- Lorenzo Bianconi