skb_copy(9)
NAME
skb_copy - create private copy of an sk_buff
SYNOPSIS
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.