[PATCH][RFC] usbatm.[ch]: cleanup and OAM F5 loopback

Roman Kagan rkagan at mail.ru
Mon Mar 14 00:05:48 EST 2005

On Sun, Mar 13, 2005 at 11:21:35PM +0100, matthieu castet wrote:
> I wasn't able to reproduce crc errors, but I have "bogus pdu_length" and
> all the status are correct.
> "bogus pdu_length" indicate it miss data in the atm trame ?

Then the modem doesn't seem to be guilty.  The message means that your
ISP sends data in bigger units than was requested by the ATM layer or
userspace (e.g. pppd), and from your log I gather that the difference
is no greater than 48 bytes (usbatm aligns the PDU to ATM payload).

I guess you need to check MRU setting in pppd (or similar stuff in
whatever higher level protocol you are using).


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