Hardware Timestamping

[mickeyl]

Although the device seems to have a pretty fine granular hardware timestamp, it looks like this is not exposed via the socketcan driver. ethtool reports:

$ ethtool --show-time-stamping can0

Time stamping parameters for can0:
Capabilities:
        software-receive
        software-system-clock
PTP Hardware Clock: none
Hardware Transmit Timestamp Modes: none
Hardware Receive Filter Modes: none

Using candump with software timestamps is pretty worthless on Linux, so it would be great, if the socketcan driver could be extended to read the hardware timestamps from the controller.