__PSKB_PULL_TAIL - Online Linux Manual PageSection : 9
Updated : June 2018
Source : Kernel Hackers Manual 2​.6​.
Note : Linux Networking

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NAME__pskb_pull_tail − advance tail of skb header

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SYNOPSISunsigned char * __pskb_pull_tail(struct sk_buff * skb, int delta);

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ARGUMENTSskb buffer to reallocate delta number of bytes to advance tail

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DESCRIPTIONThe function makes a sense only on a fragmented sk_buff, it expands header moving its tail forward and copying necessary data from fragmented part​. sk_buff MUST have reference count of 1​. Returns NULL (and sk_buff does not change) if pull failed or value of new tail of skb in the case of success​. All the pointers pointing into skb header may change and must be reloaded after call to this function​.

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