Oliver Hartkopp 153fa24b8f can: replace timestamp as unique skb attribute ... commit d3b58c47d3 upstream. Commit 514ac99c64 "can: fix multiple delivery of a single CAN frame for overlapping CAN filters" requires the skb->tstamp to be set to check for identical CAN skbs. Without timestamping to be required by user space applications this timestamp was not generated which lead to commit 36c01245eb "can: fix loss of CAN frames in raw_rcv" - which forces the timestamp to be set in all CAN related skbuffs by introducing several __net_timestamp() calls. This forces e.g. out of tree drivers which are not using alloc_can{,fd}_skb() to add __net_timestamp() after skbuff creation to prevent the frame loss fixed in mainline Linux. This patch removes the timestamp dependency and uses an atomic counter to create an unique identifier together with the skbuff pointer. Btw: the new skbcnt element introduced in struct can_skb_priv has to be initialized with zero in out-of-tree drivers which are not using alloc_can{,fd}_skb() too. Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2015-08-10 12:21:51 -07:00
..
Kconfig	can: Kconfig: switch on all CAN protocolls by default	2013-01-26 16:58:58 +01:00
Makefile	can-gw: add netlink based CAN routing	2011-09-16 17:37:51 -04:00
af_can.c	can: replace timestamp as unique skb attribute	2015-08-10 12:21:51 -07:00
af_can.h	can: add hash based access to single EFF frame filters	2014-05-19 09:38:24 +02:00
bcm.c	can: replace timestamp as unique skb attribute	2015-08-10 12:21:51 -07:00
gw.c	netlink: make nlmsg_end() and genlmsg_end() void	2015-01-18 01:03:45 -05:00
proc.c	can: add hash based access to single EFF frame filters	2014-05-19 09:38:24 +02:00
raw.c	can: replace timestamp as unique skb attribute	2015-08-10 12:21:51 -07:00