---
name: "skb_postpull_rcsum"
section: "9"
platform: "linux"
package: "linux-manual-4.9"
version: "4.9.228-1"
release: "Debian 9 (Stretch)"
platforms: ["linux"]
url: "https://new.carta.tech/skb_postpull_rcsum"
---

# skb\_postpull\_rcsum(9)

update checksum for received skb after pull

## NAME

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.

## COPYRIGHT