Date: Mon, 06 Apr 2015 17:17:28 -0700 From: Lawrence Stewart <lstewart@freebsd.org> To: Gleb Smirnoff <glebius@FreeBSD.org> Cc: svn-src-projects@FreeBSD.org, src-committers@FreeBSD.org Subject: Re: svn commit: r281151 - projects/ifnet/sys/net Message-ID: <55232218.5050401@freebsd.org> In-Reply-To: <20150406223108.GD64665@FreeBSD.org> References: <201504061522.t36FMXwX092973@svn.freebsd.org> <5522F214.5060903@freebsd.org> <20150406223108.GD64665@FreeBSD.org>
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On 04/06/15 15:31, Gleb Smirnoff wrote: > On Mon, Apr 06, 2015 at 01:52:36PM -0700, Lawrence Stewart wrote: > L> > Author: glebius > L> > Date: Mon Apr 6 15:22:32 2015 > L> > New Revision: 281151 > L> > URL: https://svnweb.freebsd.org/changeset/base/281151 > L> > > L> > Log: > L> > Provide software context store in struct ifnet for any facility. To add > L> > a new facility, one needs to grab a value in the ift_feature enum, and > L> > not need to modify struct ifnet. > L> > > L> > The store also has a cache to return frequently requested values, > L> > which resembles kobj(9) method cache. > L> > > L> > The plan is to move into the softc store almost all possible software > L> > contexts that hang off the struct ifnet, leaving static only the driver > L> > softc, AF_INET, AF_INET6 pointers, and other frequently used pointer. > L> > L> It seems likely that this is partially reinventing OSD(9) (also see the > L> way I used it for for khelp(9)). Perhaps OSD could be improved with some > L> useful things like the cache and then it might be a suitable drop in > L> replacement here as well? > > Yes, osd(9) looks very like. For now I'd prefer to keep the simple stuff > from r281151, to avoid introducing extra locks. Later we can estimate > osd(9). > Sounds good. Cheers, Lawrence
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