cvs commit: src/sys/sys _task.h

[Robert Watson]

On Wed, 28 Jul 2004, Garrett Wollman wrote:

> <<On Wed, 28 Jul 2004 08:03:16 -0700, Alfred Perlstein <alfred at FreeBSD.ORG> said:
> 
> > * Maxime Henrion <mux at freebsd.org> [040728 02:19] wrote:
> >> Or have a struct ifnet for kernel and a struct xifnet for userland, as we
> >> do in other places.
> 
> > That sounds more correct (xifnet).
> 
> No.  Everything that would legitimately be available in an xifnet
> structure is already made available through other interfaces.  The only
> reason programs might need to look at a struct ifnet is because they're
> mucking about in kernel memory, in which case they need the real one and
> not a "sanitized" version.  (This is why I moved struct ifnet to
> <net/if_var.h> in the first place.) 

Some applications and libraries declare their known violation of layering
boundaries in the system by #define _KERNEL.  Others structures have
special #define's, such as COMPAT_43, _WANT_UCRED, etc.  I'd be happy with
either #define _KERNEL or #if defined(_KERNEL) || _WANT_IFNET.

Robert N M Watson             FreeBSD Core Team, TrustedBSD Projects
robert at fledge.watson.org      Principal Research Scientist, McAfee Research