Date: Fri, 19 Aug 2005 11:08:20 +0900 From: gnn@freebsd.org To: Brooks Davis <brooks@one-eyed-alien.net> Cc: freebsd-arch@freebsd.org Subject: Re: Special schedulers, one CPU only kernel, one only userland Message-ID: <m27jeiisq3.wl%gnn@neville-neil.com> In-Reply-To: <20050818190625.GA28174@odin.ac.hmc.edu> References: <42F9ECF2.8080809@freebsd.org> <200508181023.05929.jhb@FreeBSD.org> <20050818095546.A91965@xorpc.icir.org> <200508181312.21512.jhb@FreeBSD.org> <20050818190625.GA28174@odin.ac.hmc.edu>
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At Thu, 18 Aug 2005 12:06:25 -0700, brooks wrote: > Certainly we need assurance that nothing is going to try and touch > the driver before the driver's detach function calls if_free. After > if_free returns, no aspect of the driver should touch the ifnet. Other > parts of the networking system might still have refrence to it should we > end up with a refcouting scheme where the final free of ifnets comes > some time later. All refrences to the softc need to be pruged prior to > exit from the detach routine. > Documentatoin comment. When are we going to write a driver writer's handbook? Later, George
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