Re: TCP limitations (was Re: ISCSI: Urgent Flag requirement violates TCP.)

[Raghavendra Rao <jp.raghavendra@india.sun.com>]

> > >
> > > Store the message in user memory where it
> > > belongs, no matter what. No NIC memory would
> > > ever be needed ...
> > >
> > >
> > > Much superior...
> > >

Is there even a remote possibility that some application would break if
it reuses the buffer with an assumption that its original contents of
the buffer are unaltered when an I/O error is reported ?

In other words,

	bzero(buffer, sizeof (buffer))
	error = disk_read(disk_handle, buffer, sizeof (buffer))
	if (error) {
		do something with an assumption that buffer is still zero'ed
	}

Regardless of this situation, one could simply document this side effect for
applications.

-JP