[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20210520092115.045090591@linuxfoundation.org>
Date: Thu, 20 May 2021 11:23:02 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Felix Fietkau <nbd@....name>,
Ilya Lipnitskiy <ilya.lipnitskiy@...il.com>,
"David S. Miller" <davem@...emloft.net>,
Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.9 190/240] net: ethernet: mtk_eth_soc: fix RX VLAN offload
From: Felix Fietkau <nbd@....name>
[ Upstream commit 3f57d8c40fea9b20543cab4da12f4680d2ef182c ]
The VLAN ID in the rx descriptor is only valid if the RX_DMA_VTAG bit is
set. Fixes frames wrongly marked with VLAN tags.
Signed-off-by: Felix Fietkau <nbd@....name>
[Ilya: fix commit message]
Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@...il.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
drivers/net/ethernet/mediatek/mtk_eth_soc.c | 2 +-
drivers/net/ethernet/mediatek/mtk_eth_soc.h | 1 +
2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index d10c8a8156bc..5b072bf80783 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -964,7 +964,7 @@ static int mtk_poll_rx(struct napi_struct *napi, int budget,
skb->protocol = eth_type_trans(skb, netdev);
if (netdev->features & NETIF_F_HW_VLAN_CTAG_RX &&
- RX_DMA_VID(trxd.rxd3))
+ (trxd.rxd2 & RX_DMA_VTAG))
__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
RX_DMA_VID(trxd.rxd3));
napi_gro_receive(napi, skb);
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.h b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
index 99b1c8e9f16f..2e7ccd8261c3 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
@@ -272,6 +272,7 @@
#define RX_DMA_DONE BIT(31)
#define RX_DMA_PLEN0(_x) (((_x) & 0x3fff) << 16)
#define RX_DMA_GET_PLEN0(_x) (((_x) >> 16) & 0x3fff)
+#define RX_DMA_VTAG BIT(15)
/* QDMA descriptor rxd3 */
#define RX_DMA_VID(_x) ((_x) & 0xfff)
--
2.30.2
Powered by blists - more mailing lists