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From: John Baldwin <jhb@freebsd.org>
To: Bruce Cran <bruce@cran.org.uk>
Date: Fri, 3 Dec 2010 07:46:44 -0500
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Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org,
	src-committers@freebsd.org, Bruce Evans <brde@optusnet.com.au>,
	Bruce Cran <brucec@freebsd.org>
Subject: Re: svn commit: r216134 - in head: share/man/man9 sys/amd64/include
	sys/arm/include sys/i386/include sys/ia64/include
	sys/mips/include sys/pc98/include sys/powerpc/include
	sys/sparc64/include sys/sun4v...
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On Friday, December 03, 2010 5:16:51 am Bruce Cran wrote:
> On Fri, 3 Dec 2010 20:45:12 +1100 (EST)
> Bruce Evans <brde@optusnet.com.au> wrote:
> 
> > KASSERT() in little inline functions gives a lot of bloat for such an
> > unlikely error.  Stupid callers can still pass any garbage count
> > except 0.
> 
> Yes, this catches a specific case that hps raised a few years ago:
> sending zero-length packets/frames would fail by causing the system to
> hang. Should we just document the restriction in the man page and not
> try and prevent it at runtime?

Documenting it is probably sufficient.

-- 
John Baldwin