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/20210918095637.20108-6-mailhol.vincent@wanadoo.fr CC: Stefan Mätje <stefan.maetje@esd.eu> Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>		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