From patchwork Tue Dec 27 14:08:06 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Felix Fietkau X-Patchwork-Id: 13082339 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 626ECC4332F for ; Tue, 27 Dec 2022 14:10:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-Id:Date :Subject:To:From:Reply-To:Content-Type:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=J/+msWmD/g1lZcf4oy0r+1hkk+U3OA6AiiaExjYdBco=; b=us0lY4+9XrI+p+ bkLTxRlTciPjDcThp9pC2sgp3UbJ3IzcRqwpuhDs45fVEaiiLl+DjggNOWiOeuqvTsiV5Pazyoeng qtcNGFMjuiU2vsI0e6PLjmve7Zn+RZlL0RaTVbPkkFdXDZmGKRCIy1hbbxhH5zgn6rbNSypX6fGy3 A3WFiKZ5xxUdP9mRCe2H78P9/LTtjRAh+aqb8NKyT3aKSyCtikBzLr7gpAP3da2lO3ZEE3QCAp8ID 4sPZv3CT1LovPpx8m9rACs8KdqtSlWS7OQaT2NcDJD0U6M4rf9L2DR2PJ6G5Mp9I4waxyILrYYD2a 3x8nWfixt44QYKc63Q2w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pAAeG-00DWwK-RG; Tue, 27 Dec 2022 14:09:44 +0000 Received: from nbd.name ([46.4.11.11]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pAAd1-00DWKz-59; Tue, 27 Dec 2022 14:08:31 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=nbd.name; s=20160729; h=Content-Transfer-Encoding:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=J/+msWmD/g1lZcf4oy0r+1hkk+U3OA6AiiaExjYdBco=; b=Blpp9FiTGYTzanipAn93Zg+sDs iDF1SJ2G63MwJDdveDLBtM9yH76cLEazwltPpQuMYsoQyIcyhBmB/ODi1+6J2PNPRjJL4zLq0XV0P Fhfr8wx5ThXosUNj74s9m+Q+OFPsUnGoVkvUZzDkBlA3/7gKv01kbXxRi7QjcrEwuteI=; Received: from p200300daa720fc040c81ba64b0a9b1e5.dip0.t-ipconnect.de ([2003:da:a720:fc04:c81:ba64:b0a9:b1e5] helo=Maecks.lan) by ds12 with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 (Exim 4.94.2) (envelope-from ) id 1pAAck-00C3RB-Hn; Tue, 27 Dec 2022 15:08:10 +0100 From: Felix Fietkau To: netdev@vger.kernel.org, John Crispin , Sean Wang , Mark Lee , Lorenzo Bianconi , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Matthias Brugger , Russell King Subject: [PATCH net v2 4/5] net: ethernet: mtk_eth_soc: drop generic vlan rx offload, only use DSA untagging Date: Tue, 27 Dec 2022 15:08:06 +0100 Message-Id: <20221227140807.48413-4-nbd@nbd.name> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221227140807.48413-1-nbd@nbd.name> References: <20221227140807.48413-1-nbd@nbd.name> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221227_060827_458900_F32A7054 X-CRM114-Status: GOOD ( 19.84 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org Through testing I found out that hardware vlan rx offload support seems to have some hardware issues. At least when using multiple MACs and when receiving tagged packets on the secondary MAC, the hardware can sometimes start to emit wrong tags on the first MAC as well. In order to avoid such issues, drop the feature configuration and use the offload feature only for DSA hardware untagging on MT7621/MT7622 devices which only use one MAC. Tested-By: Frank Wunderlich Signed-off-by: Felix Fietkau --- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 101 ++++++++------------ drivers/net/ethernet/mediatek/mtk_eth_soc.h | 1 - 2 files changed, 39 insertions(+), 63 deletions(-) diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index 8245cddccb5a..214cd80a19a0 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -2042,29 +2042,16 @@ static int mtk_poll_rx(struct napi_struct *napi, int budget, 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) - __vlan_hwaccel_put_tag(skb, - htons(RX_DMA_VPID(trxd.rxd4)), - RX_DMA_VID(trxd.rxd4)); - } else if (trxd.rxd2 & RX_DMA_VTAG) { - __vlan_hwaccel_put_tag(skb, htons(RX_DMA_VPID(trxd.rxd3)), - RX_DMA_VID(trxd.rxd3)); - } - } - /* When using VLAN untagging in combination with DSA, the * hardware treats the MTK special tag as a VLAN and untags it. */ - if (skb_vlan_tag_present(skb) && netdev_uses_dsa(netdev)) { - unsigned int port = ntohs(skb->vlan_proto) & GENMASK(2, 0); + if (!MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2) && + (trxd.rxd2 & RX_DMA_VTAG) && netdev_uses_dsa(netdev)) { + unsigned int port = RX_DMA_VPID(trxd.rxd3) & GENMASK(2, 0); if (port < ARRAY_SIZE(eth->dsa_meta) && eth->dsa_meta[port]) skb_dst_set_noref(skb, ð->dsa_meta[port]->dst); - - __vlan_hwaccel_clear_tag(skb); } skb_record_rx_queue(skb, 0); @@ -2889,29 +2876,11 @@ static netdev_features_t mtk_fix_features(struct net_device *dev, static int mtk_set_features(struct net_device *dev, netdev_features_t features) { - struct mtk_mac *mac = netdev_priv(dev); - struct mtk_eth *eth = mac->hw; netdev_features_t diff = dev->features ^ features; - int i; if ((diff & NETIF_F_LRO) && !(features & NETIF_F_LRO)) mtk_hwlro_netdev_disable(dev); - /* Set RX VLAN offloading */ - if (!(diff & NETIF_F_HW_VLAN_CTAG_RX)) - return 0; - - mtk_w32(eth, !!(features & NETIF_F_HW_VLAN_CTAG_RX), - MTK_CDMP_EG_CTRL); - - /* sync features with other MAC */ - for (i = 0; i < MTK_MAC_COUNT; i++) { - if (!eth->netdev[i] || eth->netdev[i] == dev) - continue; - eth->netdev[i]->features &= ~NETIF_F_HW_VLAN_CTAG_RX; - eth->netdev[i]->features |= features & NETIF_F_HW_VLAN_CTAG_RX; - } - return 0; } @@ -3211,30 +3180,6 @@ static int mtk_open(struct net_device *dev) struct mtk_eth *eth = mac->hw; int i, err; - if (mtk_uses_dsa(dev) && !eth->prog) { - for (i = 0; i < ARRAY_SIZE(eth->dsa_meta); i++) { - struct metadata_dst *md_dst = eth->dsa_meta[i]; - - if (md_dst) - continue; - - md_dst = metadata_dst_alloc(0, METADATA_HW_PORT_MUX, - GFP_KERNEL); - if (!md_dst) - return -ENOMEM; - - md_dst->u.port_info.port_id = i; - eth->dsa_meta[i] = md_dst; - } - } else { - /* Hardware special tag parsing needs to be disabled if at least - * one MAC does not use DSA. - */ - u32 val = mtk_r32(eth, MTK_CDMP_IG_CTRL); - val &= ~MTK_CDMP_STAG_EN; - mtk_w32(eth, val, MTK_CDMP_IG_CTRL); - } - err = phylink_of_phy_connect(mac->phylink, mac->of_node, 0); if (err) { netdev_err(dev, "%s: could not attach PHY: %d\n", __func__, @@ -3273,6 +3218,39 @@ static int mtk_open(struct net_device *dev) phylink_start(mac->phylink); netif_tx_start_all_queues(dev); + if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2)) + return 0; + + if (mtk_uses_dsa(dev) && !eth->prog) { + for (i = 0; i < ARRAY_SIZE(eth->dsa_meta); i++) { + struct metadata_dst *md_dst = eth->dsa_meta[i]; + + if (md_dst) + continue; + + md_dst = metadata_dst_alloc(0, METADATA_HW_PORT_MUX, + GFP_KERNEL); + if (!md_dst) + return -ENOMEM; + + md_dst->u.port_info.port_id = i; + eth->dsa_meta[i] = md_dst; + } + } else { + /* Hardware special tag parsing needs to be disabled if at least + * one MAC does not use DSA. + */ + u32 val = mtk_r32(eth, MTK_CDMP_IG_CTRL); + val &= ~MTK_CDMP_STAG_EN; + mtk_w32(eth, val, MTK_CDMP_IG_CTRL); + + val = mtk_r32(eth, MTK_CDMQ_IG_CTRL); + val &= ~MTK_CDMQ_STAG_EN; + mtk_w32(eth, val, MTK_CDMQ_IG_CTRL); + + mtk_w32(eth, 0, MTK_CDMP_EG_CTRL); + } + return 0; } @@ -3599,10 +3577,9 @@ static int mtk_hw_init(struct mtk_eth *eth) if (!MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2)) { val = mtk_r32(eth, MTK_CDMP_IG_CTRL); mtk_w32(eth, val | MTK_CDMP_STAG_EN, MTK_CDMP_IG_CTRL); - } - /* Enable RX VLan Offloading */ - mtk_w32(eth, 1, MTK_CDMP_EG_CTRL); + mtk_w32(eth, 1, MTK_CDMP_EG_CTRL); + } /* set interrupt delays based on current Net DIM sample */ mtk_dim_rx(ð->rx_dim.work); @@ -4203,7 +4180,7 @@ static int mtk_add_mac(struct mtk_eth *eth, struct device_node *np) eth->netdev[id]->hw_features |= NETIF_F_LRO; eth->netdev[id]->vlan_features = eth->soc->hw_features & - ~(NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX); + ~NETIF_F_HW_VLAN_CTAG_TX; eth->netdev[id]->features |= eth->soc->hw_features; eth->netdev[id]->ethtool_ops = &mtk_ethtool_ops; diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.h b/drivers/net/ethernet/mediatek/mtk_eth_soc.h index ce8044e8b3f7..00d9a3badf9a 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h @@ -48,7 +48,6 @@ #define MTK_HW_FEATURES (NETIF_F_IP_CSUM | \ NETIF_F_RXCSUM | \ NETIF_F_HW_VLAN_CTAG_TX | \ - NETIF_F_HW_VLAN_CTAG_RX | \ NETIF_F_SG | NETIF_F_ALL_TSO | \ NETIF_F_IPV6_CSUM |\ NETIF_F_HW_TC)