linux-toradex.git/include/linux/can, branch v4.8-rc1

can: fix handling of unmodifiable configuration options

2016-05-09T09:07:28+00:00

As described in 'can: m_can: tag current CAN FD controllers as non-ISO'
(6cfda7fbebe) it is possible to define fixed configuration options by
setting the according bit in 'ctrlmode' and clear it in 'ctrlmode_supported'.
This leads to the incovenience that the fixed configuration bits can not be
passed by netlink even when they have the correct values (e.g. non-ISO, FD).

This patch fixes that issue and not only allows fixed set bit values to be set
again but now requires(!) to provide these fixed values at configuration time.
A valid CAN FD configuration consists of a nominal/arbitration bittiming, a
data bittiming and a control mode with CAN_CTRLMODE_FD set - which is now
enforced by a new can_validate() function. This fix additionally removed the
inconsistency that was prohibiting the support of 'CANFD-only' controller
drivers, like the RCar CAN FD.

For this reason a new helper can_set_static_ctrlmode() has been introduced to
provide a proper interface to handle static enabled CAN controller options.

Reported-by: Ramesh Shanmugasundaram 
Signed-off-by: Oliver Hartkopp 
Reviewed-by: Ramesh Shanmugasundaram  
Cc:  # >= 3.18
Signed-off-by: Marc Kleine-Budde

net/can: can_dropped_invalid_skb can be boolean

2015-10-09T14:49:01+00:00

This patch makes can_dropped_invalid_skb return bool due to this
particular function only using either one or zero as its return
value.

No functional change.

Signed-off-by: Yaowei Bai 
Acked-by: Marc Kleine-Budde 
Signed-off-by: David S. Miller

can: headers: make header files self contained

2015-09-21T06:38:22+00:00

This patch adds the missing #include-s to the dev.h and led.h, so that they can
be used without including further header files.

Signed-off-by: Marc Kleine-Budde

can: replace timestamp as unique skb attribute

2015-07-12T19:13:22+00:00

Commit 514ac99c64b "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 36c01245eb8 "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 
Cc: linux-stable 
Signed-off-by: Marc Kleine-Budde

can: add combined rx/tx LED trigger support

2015-03-22T22:50:11+00:00

Add -rxtx trigger, that will be activated both for tx
as rx events. This trigger mimics "activity" LED for Ethernet
devices.

Signed-off-by: Yegor Yefremov 
Signed-off-by: Marc Kleine-Budde

can: use sock_efree instead of own destructor

2015-03-22T22:50:10+00:00

It is identical to the can destructor.

Signed-off-by: Florian Westphal 
Acked-by: Oliver Hartkopp 
Signed-off-by: Marc Kleine-Budde

can: dev: Consolidate and unify state change handling

2014-12-07T20:22:09+00:00

The handling of can error states is different between platforms.
This is an attempt to correct that problem.

I've moved this handling into a generic function for changing the
error state. This ensures that error state changes are handled
the same way everywhere (where this function is used).

This new mechanism also adds reverse state transitioning in error
frames, i.e. the user will be notified through the socket interface
when the state goes down.

Signed-off-by: Andri Yngvason 
Acked-by: Wolfgang Grandegger 
Signed-off-by: Marc Kleine-Budde

can: dev: add can_is_canfd_skb() API

2014-11-18T12:23:31+00:00

The CAN device drivers can use can_is_canfd_skb() to check if the frame to send
is on CAN FD mode or normal CAN mode.

Acked-by: Oliver Hartkopp 
Signed-off-by: Dong Aisheng 
Signed-off-by: Marc Kleine-Budde

can: unify identifiers to ensure unique include processing

2014-05-19T07:38:24+00:00

Armin pointed me to the fact that the identifier which is used to ensure the
unique include processing in lunux/include/uapi/linux/can.h is CAN_H.
This clashed with his own source as includes from libraries and APIs should
use an underscore '_' at the identifier start.

This patch fixes the protection identifiers in all CAN relavant includes.

Reported-by: Armin Burchardt 
Signed-off-by: Oliver Hartkopp 
Signed-off-by: Marc Kleine-Budde

can: add Renesas R-Car CAN driver

2014-05-19T07:38:23+00:00

Add support for the CAN controller found in Renesas R-Car SoCs.

Signed-off-by: Sergei Shtylyov 
Signed-off-by: Marc Kleine-Budde