Commit 49f8e832 authored by Cong Wang's avatar Cong Wang Committed by David S. Miller
Browse files

net: move __skb_checksum_complete*() to skbuff.c 



__skb_checksum_complete_head() and __skb_checksum_complete()
are both declared in skbuff.h, they fit better in skbuff.c
than datagram.c.

Cc: Stefano Brivio <sbrivio@redhat.com>
Signed-off-by: default avatarCong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent d1cb9273

net/core/datagram.c

+0 −43
Original line number Diff line number Diff line
@@ -728,49 +728,6 @@ fault: 
	return -EFAULT;

}



__sum16 __skb_checksum_complete_head(struct sk_buff *skb, int len)

{

	__sum16 sum;



	sum = csum_fold(skb_checksum(skb, 0, len, skb->csum));

	if (likely(!sum)) {

		if (unlikely(skb->ip_summed == CHECKSUM_COMPLETE) &&

		    !skb->csum_complete_sw)

			netdev_rx_csum_fault(skb->dev);

	}

	if (!skb_shared(skb))

		skb->csum_valid = !sum;

	return sum;

}

EXPORT_SYMBOL(__skb_checksum_complete_head);



__sum16 __skb_checksum_complete(struct sk_buff *skb)

{

	__wsum csum;

	__sum16 sum;



	csum = skb_checksum(skb, 0, skb->len, 0);



	/* skb->csum holds pseudo checksum */

	sum = csum_fold(csum_add(skb->csum, csum));

	if (likely(!sum)) {

		if (unlikely(skb->ip_summed == CHECKSUM_COMPLETE) &&

		    !skb->csum_complete_sw)

			netdev_rx_csum_fault(skb->dev);

	}



	if (!skb_shared(skb)) {

		/* Save full packet checksum */

		skb->csum = csum;

		skb->ip_summed = CHECKSUM_COMPLETE;

		skb->csum_complete_sw = 1;

		skb->csum_valid = !sum;

	}



	return sum;

}

EXPORT_SYMBOL(__skb_checksum_complete);



/**

 *	skb_copy_and_csum_datagram_msg - Copy and checksum skb to user iovec.

 *	@skb: skbuff

net/core/skbuff.c

+43 −0
Original line number Diff line number Diff line
@@ -2645,6 +2645,49 @@ __wsum skb_copy_and_csum_bits(const struct sk_buff *skb, int offset, 
}

EXPORT_SYMBOL(skb_copy_and_csum_bits);



__sum16 __skb_checksum_complete_head(struct sk_buff *skb, int len)

{

	__sum16 sum;



	sum = csum_fold(skb_checksum(skb, 0, len, skb->csum));

	if (likely(!sum)) {

		if (unlikely(skb->ip_summed == CHECKSUM_COMPLETE) &&

		    !skb->csum_complete_sw)

			netdev_rx_csum_fault(skb->dev);

	}

	if (!skb_shared(skb))

		skb->csum_valid = !sum;

	return sum;

}

EXPORT_SYMBOL(__skb_checksum_complete_head);



__sum16 __skb_checksum_complete(struct sk_buff *skb)

{

	__wsum csum;

	__sum16 sum;



	csum = skb_checksum(skb, 0, skb->len, 0);



	/* skb->csum holds pseudo checksum */

	sum = csum_fold(csum_add(skb->csum, csum));

	if (likely(!sum)) {

		if (unlikely(skb->ip_summed == CHECKSUM_COMPLETE) &&

		    !skb->csum_complete_sw)

			netdev_rx_csum_fault(skb->dev);

	}



	if (!skb_shared(skb)) {

		/* Save full packet checksum */

		skb->csum = csum;

		skb->ip_summed = CHECKSUM_COMPLETE;

		skb->csum_complete_sw = 1;

		skb->csum_valid = !sum;

	}



	return sum;

}

EXPORT_SYMBOL(__skb_checksum_complete);



static __wsum warn_crc32c_csum_update(const void *buff, int len, __wsum sum)

{

	net_warn_ratelimited(

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