skb_postpull_rcsum (9) Linux Manual Page
skb_postpull_rcsum – update checksum for received skb after pull
Synopsis
void skb_postpull_rcsum(struct sk_buff *skb, const void *start, unsigned 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_COMPLETE checksum, or set ip_summed to CHECKSUM_NONE so that it can be recomputed from scratch.