Vincent Mailhol e8060f08cd can: netlink: add can_priv::do_get_auto_tdcv() to retrieve tdcv from device ...

Some CAN device can measure the TDCV (Transmission Delay Compensation
Value) automatically for each transmitted CAN frames.

A callback function do_get_auto_tdcv() is added to retrieve that
value. This function is used only if CAN_CTRLMODE_TDC_AUTO is enabled
(if CAN_CTRLMODE_TDC_MANUAL is selected, the TDCV value is provided by
the user).

If the device does not support reporting of TDCV, do_get_auto_tdcv()
should be set to NULL and TDCV will not be reported by the netlink
interface.

On success, do_get_auto_tdcv() shall return 0. If the value can not be
measured by the device, for example because network is down or because
no frames were transmitted yet, can_priv::do_get_auto_tdcv() shall
return a negative error code (e.g. -EINVAL) to signify that the value
is not yet available. In such cases, TDCV is not reported by the
netlink interface.

Link: https://lore.kernel.org/all/[email protected]
CC: Stefan Mätje <[email protected]>
Signed-off-by: Vincent Mailhol <[email protected]>
Signed-off-by: Marc Kleine-Budde <[email protected]>

2021-10-24 16:24:29 +02:00

..

bittiming.c

can: bittiming: change can_calc_tdco()'s prototype to not directly modify priv

2021-10-24 16:24:29 +02:00

dev.c

can: dev: provide optional GPIO based termination support

2021-08-19 15:07:03 +02:00

length.c

…

Makefile

…

netlink.c

can: netlink: add can_priv::do_get_auto_tdcv() to retrieve tdcv from device

2021-10-24 16:24:29 +02:00

rx-offload.c

can: rx-offload: can_rx_offload_threaded_irq_finish(): add new function to be called from threaded interrupt

2021-07-25 11:36:25 +02:00

skb.c

can: skb: alloc_can{,fd}_skb(): set "cf" to NULL if skb allocation fails

2021-04-07 09:31:19 +02:00