kernel/linux
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ synced 2026-10-18 19:12:56 +00:00
Code Issues Releases Packages Activity
linux/include/linux/can
History
Vincent Mailhol 0a6e1bd2d2 can: dev: add generic function can_eth_ioctl_hwts() 
[ Upstream commit 90f942c5a6 ]

Tools based on libpcap (such as tcpdump) expect the SIOCSHWTSTAMP
ioctl call to be supported. This is also specified in the kernel doc
[1]. The purpose of this ioctl is to toggle the hardware timestamps.

Currently, CAN devices which support hardware timestamping have those
always activated. can_eth_ioctl_hwts() is a dumb function that will
always succeed when requested to set tx_type to HWTSTAMP_TX_ON or
rx_filter to HWTSTAMP_FILTER_ALL.

[1] Kernel doc: Timestamping, section 3.1 "Hardware Timestamping
Implementation: Device Drivers"
Link: https://docs.kernel.org/networking/timestamping.html#hardware-timestamping-implementation-device-drivers

Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://lore.kernel.org/all/20220727101641.198847-9-mailhol.vincent@wanadoo.fr
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Stable-dep-of: 38c0abad45 ("can: etas_es58x: populate ndo_change_mtu() to prevent buffer overflow")
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-10-02 13:39:11 +02:00
..
dev can: remove obsolete get_canfd_dlc() macro 2020-11-20 09:43:30 +01:00
platform can: sja1000: fix size of OCR_MODE_MASK define 2022-12-19 12:36:42 +01:00
bittiming.h can: bittiming: replace CAN units with the generic ones from linux/units.h 2025-10-02 13:39:11 +02:00
can-ml.h net: introduce CAN specific pointer in the struct net_device 2021-02-24 14:32:15 -08:00
core.h can: remove obsolete version strings 2020-10-12 10:06:39 +02:00
dev.h can: dev: add generic function can_eth_ioctl_hwts() 2025-10-02 13:39:11 +02:00
led.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
length.h can: length: fix bitstuffing count 2023-07-23 13:46:54 +02:00
rx-offload.h 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.h can: dev: can_free_echo_skb(): extend to return can frame length 2021-03-30 11:14:28 +02:00