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net: fec: fix improper use of NETDEV_TX_BUSY

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The ndo_start_xmit() method must not free skb when returning
NETDEV_TX_BUSY, since caller is going to requeue freed skb.

Fix it by returning NETDEV_TX_OK in case of dma_map_single() fails.

Fixes: 79f339125e ("net: fec: Add software TSO support")
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Zhang Changzhong 2022-10-28 10:09:11 +08:00 committed by David S. Miller
parent 5715a50244
commit 06a4df5863
1 changed files with 2 additions and 2 deletions
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4
drivers/net/ethernet/freescale/fec_main.c
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@ -713,7 +713,7 @@ fec_enet_txq_put_data_tso(struct fec_enet_priv_tx_q *txq, struct sk_buff *skb,
dev_kfree_skb_any(skb);
if (net_ratelimit())
netdev_err(ndev, "Tx DMA memory map failed\n");
return NETDEV_TX_BUSY;
return NETDEV_TX_OK;
}
bdp->cbd_datlen = cpu_to_fec16(size);
@ -775,7 +775,7 @@ fec_enet_txq_put_hdr_tso(struct fec_enet_priv_tx_q *txq,
dev_kfree_skb_any(skb);
if (net_ratelimit())
netdev_err(ndev, "Tx DMA memory map failed\n");
return NETDEV_TX_BUSY;
return NETDEV_TX_OK;
}
}