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On Oct 13, 2004, at 4:11 PM, Bill Studenmund wrote:

> I want this call because I have an application which needs to do
> scheduling flow control in userland. I can't just depend on a 
> non-blocking
> socket as the protocol I'm using deals with requests (protocol blocks 
> or
> PDUs, etc.). So once you start sending a request, you have to finish 
> it.
> For some things, I'd like to be able to make a decision about sending
> before I commit to sending the specific PDU.
>
> Thus this ioctl.
>
> Thoughts?

I would add a note in the manual page along the lines of "If you want 
to use this to implement application-level flow control, you need to 
first know how large the outbound buffer is", e.g. the send buffer on a 
socket (which you can query with getsockopt(2)).

Other than that, this looks great!

         -- Jason R. Thorpe <thorpej@shagadelic.org>


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