Re: PPPd ioctl, please help!

[rketcham <Rich.Ketcham@gmail.com>]

Hey James,

Yea, this SPI driver was my first adventure into linux drivers so I may need
you to lead me through some of this. When I first started I thought that a
char driver would be exactly what I needed. Now it seems that I should have
created a tty driver instead but I would rather try to get around that if
it's possible and not too hard.

Given my limited experience in driver design would you recommend rewriting
the driver as a tty driver (I'm guessing this would involve interfacing with
tty_io.c) or is there another way? I was hoping to handle the ioctl myself.
Would I need to include if_ppp.h?

Thanks,
Rich



James Carlson-2 wrote:
> 
> That last one looks to me like PPPIOCGCHAN.  You're getting this
> because the TIOCSETD ioctl before it didn't set N_PPP mode.
> 
> Did you implement your new device on tty_io.c, or did you just break
> out in your own direction?  If it's the latter (which is consistent
> with your other problems with ioctls), you might want to reconsider
> doing that.
> 
> But if not, then read through the tty subsystem and figure out what
> TIOCSETD does.  You need to do the same.
> 
> -- 
> James Carlson         42.703N 71.076W         <carlsonj@workingcode.com>
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