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can: omit unneeded skb_clone() calls

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The AF_CAN core delivered always cloned sk_buffs to the AF_CAN
protocols, although this was _only_ needed by the can-raw protocol.
With this (additionally documented) change, the AF_CAN core calls the
callback functions of the registered AF_CAN protocols with the original
(uncloned) sk_buff pointer and let's the can-raw protocol do the
skb_clone() itself which omits all unneeded skb_clone() calls for other
AF_CAN protocols.

Signed-off-by: Oliver Hartkopp <oliver@hartkopp.net>
Signed-off-by: Urs Thuermann <urs.thuermann@volkswagen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Oliver Hartkopp 2009-01-06 11:07:54 -08:00 • committed by David S. Miller
commit 1fa17d4ba4
4 changed files with 22 additions and 22 deletions
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2
include/linux/can/core.h
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@ -19,7 +19,7 @@
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#define CAN_VERSION "20081130"
#define CAN_VERSION "20090105"
/* increment this number each time you change some user-space interface */
#define CAN_ABI_VERSION "8"