skb_cow_head

skb_cow_head
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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.