int pskb_expand_head (struct sk_buff * skb, int nhead, int ntail, int gfp_mask);
Expands (or creates identical copy, if &nhead and &ntail are zero) header of skb. &sk_buff itself is not changed. &sk_buff MUST have reference count of 1. Returns zero in the case of success or error, if expansion failed. In the last case, &sk_buff is not changed.
All the pointers pointing into skb header may change and must be reloaded after call to this function.
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If you have comments on the formatting of this manpage, then please contact Michael Still (mikal@stillhq.com).
This documentation was generated with kernel version 2.6.0.