skbuff.net - Basic sk_buff{} functions

Basic functions for sk_buff{}

skb_headroom(), skb_tailroom()

Prototype / Description

int skb_headroom(const struct sk_buff *skb);: bytes at buffer head
int skb_tailroom(const struct sk_buff *skb);: bytes at buffer

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$sk_buff{}, skb_headroom(), skb_tailroom()$

skb_reserve()

Prototype: void skb_reserve(struct sk_buff *skb, unsigned int len);
Description: adjust headroom
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skb_push()

Prototype: unsigned char *skb_push(struct sk_buff *skb, unsigned int len);
Description: add data to the start of a buffer
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skb_pull()

Prototype: unsigned char *skb_pull(struct sk_buff *skb, unsigned int len);
Description: remove data from the start of a buffer
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skb_put()

Prototype: unsigned char *skb_put(struct sk_buff *skb, unsigned int len);
Description: add data to a buffer
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skb_trim()

Prototype: void skb_trim(struct sk_buff *skb, unsigned int len);
Description: remove end from a buffer
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