net: fec: Enable IP header hardware checksum
IP header checksum is calcalated by network layer in default. To support software TSO, it is better to use HW calculate the IP header checksum. FEC hw checksum feature request the checksum field in frame is zero, otherwise the calculative CRC is not correct. For segmentated TCP packet, HW calculate the IP header checksum again, it doesn't bring any impact. For SW TSO, HW calculated checksum bring better performance. Signed-off-by: Fugang Duan <B38611@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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61a4427b95
Коммит
96c50caa51
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@ -314,6 +314,7 @@ fec_enet_clear_csum(struct sk_buff *skb, struct net_device *ndev)
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if (unlikely(skb_cow_head(skb, 0)))
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return -1;
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ip_hdr(skb)->check = 0;
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*(__sum16 *)(skb->head + skb->csum_start + skb->csum_offset) = 0;
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return 0;
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@ -395,7 +396,7 @@ static int txq_submit_skb(struct sk_buff *skb, struct net_device *ndev)
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* are done by the kernel
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*/
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if (skb->ip_summed == CHECKSUM_PARTIAL)
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ebdp->cbd_esc |= BD_ENET_TX_PINS;
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ebdp->cbd_esc |= BD_ENET_TX_PINS | BD_ENET_TX_IINS;
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}
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}
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