Fwd: Loosing CAN messages with socket-CAN

[Marc Kleine-Budde <mkl@pengutronix.de>]

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Hello Jeroen,

please use the linux-can Mailinglist, but don't post HTML mails there.

Marc

-------- Original Message --------
Subject: Loosing CAN messages with socket-CAN
Date: Wed, 3 Apr 2013 12:17:31 +0200
From: Jeroen Lammertink <jeroen.lammertink@nl.abb.com>
To: bet-frogger@users.berlios.de

Marc Kleine-Budde,

I hope you can put me in the right direction for the following problem: We
seem to loose CAN messages.

We are sending batches of 80 CAN messages using socket CAN to transfer an
image for download. After the 80 messages we wait for a response
consisting of a single CAN message. Within the messages we have coded a
sequence number, so that we can detect lost messages. Besides the CAN
device that is subject of download, we have also a (hardware) CAN sniffer
on the CAN bus. We typically log CAN messages when we put them in the
socket. With this set-up we typically detect loosing a short series of
(mostly 5) CAN messages, somewhere halfway the batch of 80. No other
devices are present on the CAN bus.

I've dumped below some version and set-up info of Ubuntu, socket-can and
ifconfig.

Is this problem known?
May this problem be related to using an old version of socket can?
How can I upgrade Ubuntu to the latest versions of socket-can?

Thanks in advance,

Jeroen Lammertink


bmterra@q7buntu:~/user/jla$ uname -a
Linux q7buntu 3.5.0-26-generic #42~precise1-Ubuntu SMP Mon Mar 11 22:19:42
UTC 2013 i686 i686 i386 GNU/Linux
bmterra@q7buntu:~/user/jla$ cat /proc/net/can/version
rev 20090105 abi 8
bmterra@q7buntu:~/user/jla$ ifconfig can0
can0      Link encap:UNSPEC  HWaddr
00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
          UP RUNNING NOARP  MTU:16  Metric:1
          RX packets:1128 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4400 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1024
          RX bytes:9024 (9.0 KB)  TX bytes:34176 (34.1 KB)
          Interrupt:18


-- 
Pengutronix e.K.                  | Marc Kleine-Budde           |
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