2020-08-27 04:39:48 +00:00
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From: Felix Fietkau <nbd@nbd.name>
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Date: Wed, 26 Aug 2020 16:52:12 +0200
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Subject: [PATCH] net: ethernet: mtk_eth_soc: fix rx vlan offload
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The VLAN ID in the rx descriptor is only valid if the RX_DMA_VID bit is set
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Fixes frames wrongly marked with VLAN tags
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Signed-off-by: Felix Fietkau <nbd@nbd.name>
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---
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2020-04-07 08:08:16 +00:00
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--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
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+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
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2020-08-27 04:39:48 +00:00
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@@ -1320,7 +1320,7 @@ static int mtk_poll_rx(struct napi_struc
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2020-04-03 09:52:35 +00:00
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skb->protocol = eth_type_trans(skb, netdev);
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if (netdev->features & NETIF_F_HW_VLAN_CTAG_RX &&
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- RX_DMA_VID(trxd.rxd3))
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+ (trxd.rxd2 & RX_DMA_VTAG))
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__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
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RX_DMA_VID(trxd.rxd3));
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skb_record_rx_queue(skb, 0);
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2020-04-07 08:08:16 +00:00
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--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h
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+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
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2020-09-13 07:34:37 +00:00
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@@ -295,6 +295,7 @@
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2020-04-03 09:52:35 +00:00
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#define RX_DMA_LSO BIT(30)
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#define RX_DMA_PLEN0(_x) (((_x) & 0x3fff) << 16)
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#define RX_DMA_GET_PLEN0(_x) (((_x) >> 16) & 0x3fff)
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+#define RX_DMA_VTAG BIT(15)
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/* QDMA descriptor rxd3 */
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#define RX_DMA_VID(_x) ((_x) & 0xfff)
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