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From:   Shaokun Zhang <zhangshaokun@hisilicon.com>
To:     <netdev@vger.kernel.org>,
        <linux-stm32@st-md-mailman.stormreply.com>,
        <linux-arm-kernel@lists.infradead.org>,
        <linux-kernel@vger.kernel.org>
CC:     yuqi jin <jinyuqi@huawei.com>,
        Giuseppe Cavallaro <peppe.cavallaro@st.com>,
        Alexandre Torgue <alexandre.torgue@st.com>,
        "Jose Abreu" <joabreu@synopsys.com>,
        "David S. Miller" <davem@davemloft.net>,
        "Maxime Coquelin" <mcoquelin.stm32@gmail.com>,
        Shaokun Zhang <zhangshaokun@hisilicon.com>
Subject: [PATCH] net: stmmac: Fix the problem of tso_xmit
Date:   Thu, 17 Oct 2019 18:59:10 +0800
Message-ID: <1571309950-43543-1-git-send-email-zhangshaokun@hisilicon.com>
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From: yuqi jin <jinyuqi@huawei.com>

When the address width of DMA is greater than 32, the packet header occupies
a BD descriptor. The starting address of the data should be added to the
header length.

Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Jose Abreu <joabreu@synopsys.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Signed-off-by: yuqi jin <jinyuqi@huawei.com>
Signed-off-by: Shaokun Zhang <zhangshaokun@hisilicon.com>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index c76a1336a451..3e02e64c5fa0 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -2995,6 +2995,7 @@ static netdev_tx_t stmmac_tso_xmit(struct sk_buff *skb, struct net_device *dev)
 	} else {
 		stmmac_set_desc_addr(priv, first, des);
 		tmp_pay_len = pay_len;
+		des += proto_hdr_len;
 	}
 
 	stmmac_tso_allocator(priv, des, tmp_pay_len, (nfrags == 0), queue);
-- 
2.7.4