From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marc Kleine-Budde Subject: Fwd: Loosing CAN messages with socket-CAN Date: Wed, 03 Apr 2013 12:37:03 +0200 Message-ID: <515C064F.2060503@pengutronix.de> References: Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="----enig2DMIKLNEEMSDTWLRJXNBJ" Return-path: Received: from metis.ext.pengutronix.de ([92.198.50.35]:47848 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751754Ab3DCKhJ (ORCPT ); Wed, 3 Apr 2013 06:37:09 -0400 In-Reply-To: Sender: linux-can-owner@vger.kernel.org List-ID: To: "linux-can@vger.kernel.org" Cc: Jeroen Lammertink This is an OpenPGP/MIME signed message (RFC 4880 and 3156) ------enig2DMIKLNEEMSDTWLRJXNBJ Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: quoted-printable 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 To: bet-frogger@users.berlios.de Marc Kleine-Budde, I hope you can put me in the right direction for the following problem: W= e 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 22:19:4= 2 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 --=20 Pengutronix e.K. | Marc Kleine-Budde | Industrial Linux Solutions | Phone: +49-231-2826-924 | Vertretung West/Dortmund | Fax: +49-5121-206917-5555 | Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de | ------enig2DMIKLNEEMSDTWLRJXNBJ Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iEYEARECAAYFAlFcBlMACgkQjTAFq1RaXHPvEQCghMcstxAschEOAe2ZdlPSa1vG s/kAn3OVdIejl4xBcmTmps4aWlr2HONd =vLM9 -----END PGP SIGNATURE----- ------enig2DMIKLNEEMSDTWLRJXNBJ--