From mboxrd@z Thu Jan  1 00:00:00 1970
From: Oliver Hartkopp <socketcan@hartkopp.net>
Subject: Re: CAN message timestamping
Date: Wed, 23 Mar 2016 08:00:47 +0100
Message-ID: <56F23F1F.6040101@hartkopp.net>
References: <CANGgnMbLhYDdiK_tff0cEW+umuMOPN0h9x7t7cMK-xjMAMNBmQ@mail.gmail.com>
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To: Austin Schuh <austin@peloton-tech.com>, linux-can <linux-can@vger.kernel.org>, Philipp Schrader <philipp@peloton-tech.com>

Hi Austin,

On 23.03.2016 06:12, Austin Schuh wrote:
> We recently tried doing CAN timestamping with the ioctl(s, SIOCGSTAMP,
> &tv) call.

Did you ever try to use the recvmsg() call with enabled SO_TIMESTAMPING socket 
option?

See:

https://www.kernel.org/doc/Documentation/networking/timestamping.txt
https://www.kernel.org/doc/Documentation/networking/timestamping/

The candump tool also uses recvmsg() - but only with SO_TIMESTAMP so far which 
does not provide the other RX timestamps (link HW TS).

Regards,
Oliver