__pskb_copy_fclone
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Name

__pskb_copy_fclone — create copy of an sk_buff with private head.

Synopsis

struct sk_buff * __pskb_copy_fclone (struct sk_buff * skb,
 int headroom,
 gfp_t gfp_mask,
 bool fclone);
 

Arguments

skb

buffer to copy

headroom

headroom of new skb

gfp_mask

allocation priority

fclone

if true allocate the copy of the skb from the fclone cache instead of the head cache; it is recommended to set this to true for the cases where the copy will likely be cloned

Description

Make a copy of both an sk_buff and part of its data, located in header. Fragmented data remain shared. This is used when the caller wishes to modify only header of sk_buff and needs private copy of the header to alter. Returns NULL on failure or the pointer to the buffer on success. The returned buffer has a reference count of 1.

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