SKB_COW_HEAD(9) Linux Networking SKB_COW_HEAD(9)
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
Kernel Hackers Manual 3.10 June 2014 SKB_COW_HEAD(9)
