From mboxrd@z Thu Jan  1 00:00:00 1970
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Date: Thu, 01 Mar 2007 13:10:50 +0100
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Subject: Re: [Xenomai-help] CAN rt_dev_recvfrom
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From: Roland Tollenaar <rwatollenaar@domain.hid>
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To: Wolfgang Grandegger <wg@domain.hid>, Xenomai-help@domain.hid

Hi,

>> Where can I find the buffer size option in the kernel config menu? 
>> What is the default size?
> 
> On the first menu of the RT-Socket-CAN configuration options:
> 
> config XENO_DRIVERS_CAN_RXBUF_SIZE
>         depends on XENO_DRIVERS_CAN
>         int "Size of receive ring buffers (must be 2^N)"
>         default 1024
> 
> Note that the messages are stored in "packed" format.

Does this mean that the buffer will store 1024 can_frame's ?

If yes (or even if no) when rt_dev_recv is called, does it place the 
last recieved message (youngest message) or the oldest (behave like a 
FIFO) into *Buf?

Roland

> 
> Wolfgang.
>