net: add __pskb_copy_fclone and pskb_copy_for_clone

There are several instances where a pskb_copy or __pskb_copy is
immediately followed by an skb_clone.

Add a couple of new functions to allow the copy skb to be allocated
from the fclone cache and thus speed up subsequent skb_clone calls.

Cc: Alexander Smirnov <[email protected]>
Cc: Dmitry Eremin-Solenikov <[email protected]>
Cc: Marek Lindner <[email protected]>
Cc: Simon Wunderlich <[email protected]>
Cc: Antonio Quartulli <[email protected]>
Cc: Marcel Holtmann <[email protected]>
Cc: Gustavo Padovan <[email protected]>
Cc: Johan Hedberg <[email protected]>
Cc: Arvid Brodin <[email protected]>
Cc: Patrick McHardy <[email protected]>
Cc: Pablo Neira Ayuso <[email protected]>
Cc: Jozsef Kadlecsik <[email protected]>
Cc: Lauro Ramos Venancio <[email protected]>
Cc: Aloisio Almeida Jr <[email protected]>
Cc: Samuel Ortiz <[email protected]>
Cc: Jon Maloy <[email protected]>
Cc: Allan Stephens <[email protected]>
Cc: Andrew Hendry <[email protected]>
Cc: Eric Dumazet <[email protected]>
Reviewed-by: Christoph Paasch <[email protected]>
Signed-off-by: Octavian Purdila <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

0 files changed, 0 insertions, 0 deletions