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__PSKB_PULL_TAIL(9) Linux Networking __PSKB_PULL_TAIL(9)

NAME

__pskb_pull_tail - advance tail of skb header

SYNOPSIS

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

ARGUMENTS

skb
buffer to reallocate
delta
number of bytes to advance tail

DESCRIPTION

The 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.

COPYRIGHT

February 2017 Kernel Hackers Manual 3.16