SKB Tinkering -Part1

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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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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