---
name: "skb_cow_head"
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_cow_head"
---

# skb\_cow\_head(9)

skb\_cow but only making the head writable

## NAME

skb\_cow\_head - skb\_cow but only making the head writable

## SYNOPSIS

**int skb\_cow\_head(struct sk\_buff \*** *skb***, unsigned int** *headroom***);**

## ARGUMENTS

*skb*

buffer to cow

*headroom*

needed headroom

## DESCRIPTION

This function is identical to skb\_cow except that we replace the skb\_cloned check by skb\_header\_cloned. It should be used when you only need to push on some header and do not need to modify the data.

## COPYRIGHT