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skb_copy
Langue: en
Version: June 2009 (debian - 07/07/09)
Section: 9 (Appels noyau Linux)
NAME
skb_copy - create private copy of an sk_buffSYNOPSIS
- struct sk_buff * skb_copy(const struct sk_buff * skb, gfp_t gfp_mask);
ARGUMENTS
skb
- buffer to copy
gfp_mask
- allocation priority
DESCRIPTION
Make a copy of both an sk_buff and its data. This is used when the caller wishes to modify the data and needs a private copy of the data to alter. Returns NULL on failure or the pointer to the buffer on success. The returned buffer has a reference count of 1.
As by-product this function converts non-linear sk_buff to linear one, so that sk_buff becomes completely private and caller is allowed to modify all the data of returned buffer. This means that this function is not recommended for use in circumstances when only header is going to be modified. Use pskb_copy instead.
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