Re: 2.0.30 serial.c, ppp.c and pppd-2.2 questions

Mr. James W. Laferriere Network Engineer (babydr@nwrain.net)
Fri, 18 Jul 1997 23:51:48 -0700 (PDT)


Hello Bill & Rob,

On Fri, 18 Jul 1997, Bill Hawes wrote:
> Rob Riggs wrote:
> > In serial.c's receive_char() interrupt handler we read a
> > char from the UART then just drop it if the flip buffer
> > is full.
>
> I asked about this a while back, and the reply was that the flip buffer
> is not supposed to ever fill up. The flip buffer is flipped on the
> jiffy clock (e.g. 100 Hz), so it should handle serial rates far in
> excess of 64kbps without filling.

Would this also be a kicker if somenoe had a 2.2Mb/s Sync
card ?
Or am I just seeing flying things thru the swamp gas? ;-)

> The present code does appear to have some bugs if it fills -- look
> closely at the logic for handling overrun indications. But if it never
> fills, fixing things is not a priority.
>
> -Bill
Tia, JimL
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