From: Holger Schurig <holgerschurig@gmail.com>
To: Marc Kleine-Budde <mkl@pengutronix.de>, linux-can@vger.kernel.org
Subject: Re: [PATCH v2 00/12] can: rx-offload: add implmentation and switch flexcan driver to use it
Date: Wed, 07 Sep 2016 08:33:57 +0200 [thread overview]
Message-ID: <878tv48bhm.fsf@gmail.com> (raw)
In-Reply-To: <1467657137-18891-1-git-send-email-mkl@pengutronix.de>
Marc Kleine-Budde <mkl@pengutronix.de> writes:
Late answer :-)
This driver was tested with Linux 4.7.2 an on i.MX6Q device. Not by me,
I don't even have their exact test software. I just get the reports ...
Using some external tool (maybe Kvaser?) they generated 80% busload at
500 kbps, the driver survived for 3 days without any data loss. So,
compared with the current in-kernel driver, this is a definitive
improvement!
Then they did same CAN ping-ping test with reboots and wrote: "Out of
about 16,000 reboots we had one failure. This failed both CAN interfaces
and the logs show that the PTX-C received all CAN messages and returned
them, but the test machine for some reason did not receive any CAN
messages."
I don't have any idea why Linux thought it was sending but the receiver
didn't receive anything. And I'm no CAN expert, not at all. Wouldn't I
get an error condition on the sending side? How would a program get
this error, is it a return value to sendto()
Holger
next prev parent reply other threads:[~2016-09-07 6:34 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-04 18:32 [PATCH v2 00/12] can: rx-offload: add implmentation and switch flexcan driver to use it Marc Kleine-Budde
2016-07-04 18:32 ` [PATCH v2 01/12] can: rx-offload: Add support for HW fifo based irq offloading Marc Kleine-Budde
2016-07-04 18:32 ` [PATCH v2 02/12] can: rx-offload: Add support for timestamp " Marc Kleine-Budde
2016-07-04 18:49 ` Andri Yngvason
2016-07-04 20:59 ` Marc Kleine-Budde
2016-07-04 22:30 ` Marc Kleine-Budde
2016-07-05 11:58 ` Andri Yngvason
2016-07-05 12:40 ` Marc Kleine-Budde
2016-07-05 5:46 ` Alexander Stein
2016-07-05 6:19 ` Marc Kleine-Budde
2016-07-05 6:31 ` David Jander
2016-07-05 7:21 ` Marc Kleine-Budde
2016-07-04 18:32 ` [PATCH v2 03/12] can: flexcan: remove write-only member pdata of struct flexcan_priv Marc Kleine-Budde
2016-07-04 18:32 ` [PATCH v2 04/12] can: flexcan: make declaration of devtype_data const Marc Kleine-Budde
2016-07-04 18:32 ` [PATCH v2 05/12] can: flexcan: calculate default value for imask1 during runtime Marc Kleine-Budde
2016-07-04 18:32 ` [PATCH v2 06/12] can: flexcan: make TX mailbox selectable " Marc Kleine-Budde
2016-07-04 18:32 ` [PATCH v2 07/12] can: flexcan: make use of rx-offload's irq_offload_fifo Marc Kleine-Budde
2016-07-04 18:32 ` [PATCH v2 08/12] can: flexcan: add missing register definitions Marc Kleine-Budde
2016-07-04 18:32 ` [PATCH v2 09/12] can: flexcan: activate individual RX masking and initialize reg_rximr Marc Kleine-Budde
2016-07-04 18:32 ` [PATCH v2 10/12] can: flexcan: add quirk FLEXCAN_QUIRK_ENABLE_EACEN_RRS Marc Kleine-Budde
2016-07-04 18:32 ` [PATCH v2 11/12] can: flexcan: add support for timestamp based rx-offload Marc Kleine-Budde
2016-07-04 18:32 ` [PATCH v2 12/12] can: flexcan: switch imx6 and vf610 to timestamp based offloading Marc Kleine-Budde
2016-07-13 7:28 ` [PATCH v2 00/12] can: rx-offload: add implmentation and switch flexcan driver to use it Mirza Krak
2016-07-13 7:46 ` Marc Kleine-Budde
2016-09-07 6:33 ` Holger Schurig [this message]
2016-10-04 6:32 ` Holger Schurig
2016-10-04 11:57 ` Alexander Stein
2016-10-04 12:33 ` David Jander
2016-10-05 12:37 ` Alexander Stein
2016-11-30 14:22 ` Alexander Stein
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