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can: netlink: Add CAN_CTRLMODE_PRESUME_ACK flag

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Most CAN controllers have a support for ignoring ACK absence. Some of
them refer to this feature as a self test mode (e. g. SJA1000) and some
include it as a part of a loopback mode (e. g. MCP2510).

Setting the introduced flag via netlink should make CAN controller
perform a successful transmission, even if there is no acknowledgement
(dominant ACK bit) received.

Signed-off-by: Nikita Edward Baruzdin <nebaruzdin@gmail.com>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Nikita Edward Baruzdin 2014-07-11 16:13:22 +04:00 committed by Marc Kleine-Budde
parent f736d9985e
commit 4b9e1bab12
1 changed files with 1 additions and 0 deletions
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1
include/uapi/linux/can/netlink.h
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@ -97,6 +97,7 @@ struct can_ctrlmode {
#define CAN_CTRLMODE_ONE_SHOT 0x08 /* One-Shot mode */
#define CAN_CTRLMODE_BERR_REPORTING 0x10 /* Bus-error reporting */
#define CAN_CTRLMODE_FD 0x20 /* CAN FD mode */
#define CAN_CTRLMODE_PRESUME_ACK 0x40 /* Ignore missing CAN ACKs */
/*
* CAN device statistics