From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 98C576FA1 for ; Mon, 3 Apr 2023 14:49:17 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1FACAC433EF; Mon, 3 Apr 2023 14:49:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1680533357; bh=oBdmUSTIaXMJEYtjpL+7zXX5ZYXXep+XtS4WHi757UU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YLDmcN+sngdnMJaLJFteq1e8R4bmg2lXpLiu/YM0nUH2aLCJj24B882LwYpak/8ds leSX7EiWAS3nLjK7/L6yeAObSZWi+milQ22ll0HhYgDoTipe8y40oEH3pG7bIDBjMZ xrCodpIXbbrH5ZIcz4dg817t5zD446hCN5K8KhsU= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Simon Horman , Felix Fietkau , Leon Romanovsky , Jakub Kicinski , Sasha Levin Subject: [PATCH 6.2 122/187] net: ethernet: mtk_eth_soc: fix L2 offloading with DSA untag offload Date: Mon, 3 Apr 2023 16:09:27 +0200 Message-Id: <20230403140419.979855334@linuxfoundation.org> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230403140416.015323160@linuxfoundation.org> References: <20230403140416.015323160@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Felix Fietkau [ Upstream commit 5f36ca1b841fb17a20249fd9fedafc7dc7fdd940 ] Check for skb metadata in order to detect the case where the DSA header is not present. Fixes: 2d7605a72906 ("net: ethernet: mtk_eth_soc: enable hardware DSA untagging") Reviewed-by: Simon Horman Signed-off-by: Felix Fietkau Reviewed-by: Leon Romanovsky Link: https://lore.kernel.org/r/20230330120840.52079-2-nbd@nbd.name Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin --- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 6 +++--- drivers/net/ethernet/mediatek/mtk_ppe.c | 5 ++++- 2 files changed, 7 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index 9f9df6255baa1..bd7c18c839d42 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -2006,9 +2006,6 @@ static int mtk_poll_rx(struct napi_struct *napi, int budget, skb_checksum_none_assert(skb); skb->protocol = eth_type_trans(skb, netdev); - if (reason == MTK_PPE_CPU_REASON_HIT_UNBIND_RATE_REACHED) - mtk_ppe_check_skb(eth->ppe[0], skb, hash); - if (netdev->features & NETIF_F_HW_VLAN_CTAG_RX) { if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2)) { if (trxd.rxd3 & RX_DMA_VTAG_V2) { @@ -2036,6 +2033,9 @@ static int mtk_poll_rx(struct napi_struct *napi, int budget, __vlan_hwaccel_put_tag(skb, htons(vlan_proto), vlan_tci); } + if (reason == MTK_PPE_CPU_REASON_HIT_UNBIND_RATE_REACHED) + mtk_ppe_check_skb(eth->ppe[0], skb, hash); + skb_record_rx_queue(skb, 0); napi_gro_receive(napi, skb); diff --git a/drivers/net/ethernet/mediatek/mtk_ppe.c b/drivers/net/ethernet/mediatek/mtk_ppe.c index 1ff024f42444b..52db211d9596a 100644 --- a/drivers/net/ethernet/mediatek/mtk_ppe.c +++ b/drivers/net/ethernet/mediatek/mtk_ppe.c @@ -8,6 +8,7 @@ #include #include #include +#include #include #include "mtk_eth_soc.h" #include "mtk_ppe.h" @@ -699,7 +700,9 @@ void __mtk_ppe_check_skb(struct mtk_ppe *ppe, struct sk_buff *skb, u16 hash) skb->dev->dsa_ptr->tag_ops->proto != DSA_TAG_PROTO_MTK) goto out; - tag += 4; + if (!skb_metadata_dst(skb)) + tag += 4; + if (get_unaligned_be16(tag) != ETH_P_8021Q) break; -- 2.39.2