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Commit d3bc23e7 authored by Al Viro's avatar Al Viro Committed by David S. Miller
Browse files

[NET]: Annotate callers of csum_fold() in net/* 



Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 9981a0e3

net/core/datagram.c

+4 −4
Original line number Diff line number Diff line
@@ -413,9 +413,9 @@ static int skb_copy_and_csum_datagram(const struct sk_buff *skb, int offset, 


unsigned int __skb_checksum_complete(struct sk_buff *skb)

{

	unsigned int sum;

	__sum16 sum;



	sum = (u16)csum_fold(skb_checksum(skb, 0, skb->len, skb->csum));

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

	if (likely(!sum)) {

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

			netdev_rx_csum_fault(skb->dev);
@@ -441,7 +441,7 @@ EXPORT_SYMBOL(__skb_checksum_complete); 
int skb_copy_and_csum_datagram_iovec(struct sk_buff *skb,

				     int hlen, struct iovec *iov)

{

	unsigned int csum;

	__wsum csum;

	int chunk = skb->len - hlen;



	/* Skip filled elements.
@@ -460,7 +460,7 @@ int skb_copy_and_csum_datagram_iovec(struct sk_buff *skb, 
		if (skb_copy_and_csum_datagram(skb, hlen, iov->iov_base,

					       chunk, &csum))

			goto fault;

		if ((unsigned short)csum_fold(csum))

		if (csum_fold(csum))

			goto csum_error;

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

			netdev_rx_csum_fault(skb->dev);

net/core/dev.c

+2 −2
Original line number Diff line number Diff line
@@ -1169,7 +1169,7 @@ EXPORT_SYMBOL(netif_device_attach); 
 */

int skb_checksum_help(struct sk_buff *skb)

{

	unsigned int csum;

	__wsum csum;

	int ret = 0, offset = skb->h.raw - skb->data;



	if (skb->ip_summed == CHECKSUM_COMPLETE)
@@ -1193,7 +1193,7 @@ int skb_checksum_help(struct sk_buff *skb) 
	BUG_ON(offset <= 0);

	BUG_ON(skb->csum + 2 > offset);



	*(u16*)(skb->h.raw + skb->csum) = csum_fold(csum);

	*(__sum16*)(skb->h.raw + skb->csum) = csum_fold(csum);



out_set_summed:

	skb->ip_summed = CHECKSUM_NONE;

net/core/netpoll.c

+1 −1
Original line number Diff line number Diff line
@@ -88,7 +88,7 @@ static int checksum_udp(struct sk_buff *skb, struct udphdr *uh, 
	psum = csum_tcpudp_nofold(saddr, daddr, ulen, IPPROTO_UDP, 0);



	if (skb->ip_summed == CHECKSUM_COMPLETE &&

	    !(u16)csum_fold(csum_add(psum, skb->csum)))

	    !csum_fold(csum_add(psum, skb->csum)))

		return 0;



	skb->csum = psum;

net/core/skbuff.c

+2 −2
Original line number Diff line number Diff line
@@ -1396,7 +1396,7 @@ unsigned int skb_copy_and_csum_bits(const struct sk_buff *skb, int offset, 


void skb_copy_and_csum_dev(const struct sk_buff *skb, u8 *to)

{

	unsigned int csum;

	__wsum csum;

	long csstart;



	if (skb->ip_summed == CHECKSUM_PARTIAL)
@@ -1416,7 +1416,7 @@ void skb_copy_and_csum_dev(const struct sk_buff *skb, u8 *to) 
	if (skb->ip_summed == CHECKSUM_PARTIAL) {

		long csstuff = csstart + skb->csum;



		*((unsigned short *)(to + csstuff)) = csum_fold(csum);

		*((__sum16 *)(to + csstuff)) = csum_fold(csum);

	}

}

net/ipv4/icmp.c

+2 −2
Original line number Diff line number Diff line
@@ -356,7 +356,7 @@ static void icmp_push_reply(struct icmp_bxm *icmp_param, 
		ip_flush_pending_frames(icmp_socket->sk);

	else if ((skb = skb_peek(&icmp_socket->sk->sk_write_queue)) != NULL) {

		struct icmphdr *icmph = skb->h.icmph;

		unsigned int csum = 0;

		__wsum csum = 0;

		struct sk_buff *skb1;



		skb_queue_walk(&icmp_socket->sk->sk_write_queue, skb1) {
@@ -931,7 +931,7 @@ int icmp_rcv(struct sk_buff *skb) 


	switch (skb->ip_summed) {

	case CHECKSUM_COMPLETE:

		if (!(u16)csum_fold(skb->csum))

		if (!csum_fold(skb->csum))

			break;

		/* fall through */

	case CHECKSUM_NONE: