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net:use help function of skb_checksum_start_offset to calculate offset

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Although these are equivalent, but the skb_checksum_start_offset() is more readable.

Signed-off-by: Shan Wei <shanwei@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Shan Wei 2011-04-22 19:07:41 +08:00 committed by David S. Miller
parent f6d8bd051c
commit 96339d6c49
2 changed files with 2 additions and 2 deletions
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2
drivers/net/tile/tilepro.c
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@ -1930,7 +1930,7 @@ static int tile_net_tx(struct sk_buff *skb, struct net_device *dev)
unsigned int len = skb->len; unsigned int len = skb->len;
unsigned char *data = skb->data; unsigned char *data = skb->data;
unsigned int csum_start = skb->csum_start - skb_headroom(skb); unsigned int csum_start = skb_checksum_start_offset(skb);
lepp_frag_t frags[LEPP_MAX_FRAGS]; lepp_frag_t frags[LEPP_MAX_FRAGS];

2
net/ipv6/udp.c
View File

@ -1328,7 +1328,7 @@ static struct sk_buff *udp6_ufo_fragment(struct sk_buff *skb, u32 features)
/* Do software UFO. Complete and fill in the UDP checksum as HW cannot /* Do software UFO. Complete and fill in the UDP checksum as HW cannot
* do checksum of UDP packets sent as multiple IP fragments. * do checksum of UDP packets sent as multiple IP fragments.
*/ */
offset = skb->csum_start - skb_headroom(skb); offset = skb_checksum_start_offset(skb);
csum = skb_checksum(skb, offset, skb->len- offset, 0); csum = skb_checksum(skb, offset, skb->len- offset, 0);
offset += skb->csum_offset; offset += skb->csum_offset;
*(__sum16 *)(skb->data + offset) = csum_fold(csum); *(__sum16 *)(skb->data + offset) = csum_fold(csum);