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pskb_expand_head
Langue: en
Version: June 2009 (debian - 07/07/09)
Section: 9 (Appels noyau Linux)
NAME
pskb_expand_head - reallocate header of sk_buffSYNOPSIS
- int pskb_expand_head(struct sk_buff * skb, int nhead, int ntail, gfp_t gfp_mask);
ARGUMENTS
skb
- buffer to reallocate
nhead
- room to add at head
ntail
- room to add at tail
gfp_mask
- allocation priority
DESCRIPTION
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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