On 10/8/19 10:07 AM, Kurt Van Dijck wrote: > On di, 08 okt 2019 09:52:22 +0200, Marc Kleine-Budde wrote: >> Date: Tue, 8 Oct 2019 09:52:22 +0200 >> From: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx> >> To: linux-can@xxxxxxxxxxxxxxx >> Cc: Kurt Van Dijck <dev.kurt@xxxxxxxxxxxxxxxxxxxxxx>, Joe Burmeister >> <joe.burmeister@xxxxxxxxxxxxx> >> Subject: [PATCH v3 0/4] can: c_can/rx-offload >> X-Mailer: git-send-email 2.23.0 >> >> Hello, >> >> taking up Kurt's work. I've cleaned up the rx-offload and c_can patches >> a bit. Untested as I don't have any hardware at hand. > > I had created equivalent code (skb_queue in isr, skb_dequeue in napi > handler) running on a 4.9 kernel since some days now. I didn't observe > any problems yet. This is based on the patches you send around. Anyways can you send me your currently working version? >> I just looked at the c_can and d_can datasheets. Am I right, that both >> cores don't have a timestamp register to indicate when a CAN frame has >> been received? > > I had the same impression. > The core clearly has not been built as a FIFO, but 'message objects'. > Hence the magic in the isr for trying to maintain proper sequence of > messages. Yes. :( Marc -- 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 |
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