NAME
skb_postpull_rcsum - update checksum for received skb after pull
SYNOPSIS
void skb_postpull_rcsum (struct sk_buff * skb, const void * start,
int len);
ARGUMENTS
skb buffer to update
start start of data before pull
len length of data pulled
DESCRIPTION
After doing a pull on a received packet, you need to call this to
update the CHECKSUM_HW checksum, or set ip_summed to CHECKSUM_NONE so
that it can be recomputed from scratch.