Hi!, The CAN controller that I am using allows configuring per-mailbox IDs. CAN being a broadcast network, this feature reduces the interrupts to the processor.
From Documentation/can.txt, what I understand is that the socketcan interface does not provide any mechanism to configure the h/w for this purpose (chapter 6.3). Instead, the h/w is configured to receive all identifiers and the filtering is done on the stack (like ti_hecc.c) and to avoid hogging the processor some interrupt mitigation techniques like NAPI is implemented. Isn't this a work around? My question is, did I miss something, is there any way to configure the h/w for this purpose. Is it a good idea if I cook up a sysfs interface for my driver for this. Thank you so much. Best Regards, SG
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