From bad93e9d4eeb0d2d6b79204d6cedc7f2e7b256f1 Mon Sep 17 00:00:00 2001
From: Octavian Purdila <octavian.purdila@intel.com>
Date: Thu, 12 Jun 2014 01:36:26 +0300
Subject: 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 <alex.bluesman.smirnov@gmail.com>
Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Cc: Marek Lindner <mareklindner@neomailbox.ch>
Cc: Simon Wunderlich <sw@simonwunderlich.de>
Cc: Antonio Quartulli <antonio@meshcoding.com>
Cc: Marcel Holtmann <marcel@holtmann.org>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: Johan Hedberg <johan.hedberg@gmail.com>
Cc: Arvid Brodin <arvid.brodin@alten.se>
Cc: Patrick McHardy <kaber@trash.net>
Cc: Pablo Neira Ayuso <pablo@netfilter.org>
Cc: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Cc: Lauro Ramos Venancio <lauro.venancio@openbossa.org>
Cc: Aloisio Almeida Jr <aloisio.almeida@openbossa.org>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Cc: Jon Maloy <jon.maloy@ericsson.com>
Cc: Allan Stephens <allan.stephens@windriver.com>
Cc: Andrew Hendry <andrew.hendry@gmail.com>
Cc: Eric Dumazet <edumazet@google.com>
Reviewed-by: Christoph Paasch <christoph.paasch@uclouvain.be>
Signed-off-by: Octavian Purdila <octavian.purdila@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 net/batman-adv/distributed-arp-table.c | 2 +-
 net/batman-adv/network-coding.c        | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

(limited to 'net/batman-adv')

diff --git a/net/batman-adv/distributed-arp-table.c b/net/batman-adv/distributed-arp-table.c
index dcd99b2bea3c..f2c066b21716 100644
--- a/net/batman-adv/distributed-arp-table.c
+++ b/net/batman-adv/distributed-arp-table.c
@@ -594,7 +594,7 @@ static bool batadv_dat_send_data(struct batadv_priv *bat_priv,
 		if (!neigh_node)
 			goto free_orig;
 
-		tmp_skb = pskb_copy(skb, GFP_ATOMIC);
+		tmp_skb = pskb_copy_for_clone(skb, GFP_ATOMIC);
 		if (!batadv_send_skb_prepare_unicast_4addr(bat_priv, tmp_skb,
 							   cand[i].orig_node,
 							   packet_subtype)) {
diff --git a/net/batman-adv/network-coding.c b/net/batman-adv/network-coding.c
index 40a2fc4bcf4c..8d04d174669e 100644
--- a/net/batman-adv/network-coding.c
+++ b/net/batman-adv/network-coding.c
@@ -1344,7 +1344,7 @@ static void batadv_nc_skb_store_before_coding(struct batadv_priv *bat_priv,
 	struct ethhdr *ethhdr;
 
 	/* Copy skb header to change the mac header */
-	skb = pskb_copy(skb, GFP_ATOMIC);
+	skb = pskb_copy_for_clone(skb, GFP_ATOMIC);
 	if (!skb)
 		return;
 
-- 
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