Date: Fri, 26 Nov 2004 13:42:32 -0700 From: Scott Long <scottl@freebsd.org> To: Gleb Smirnoff <glebius@freebsd.org> Cc: cvs-all@freebsd.org Subject: Re: cvs commit: src/sys/netgraph netgraph.h ng_base.c ng_source.c ng_uni_cust.hsrc/sys/netgraph/bluetooth/l2cap ... Message-ID: <41A79538.8000003@freebsd.org> In-Reply-To: <20041126203159.GB87167@cell.sick.ru> References: <200411261029.iAQATJHG003436@repoman.freebsd.org> <41A74A92.3090605@freebsd.org> <20041126203159.GB87167@cell.sick.ru>
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Gleb Smirnoff wrote: > On Fri, Nov 26, 2004 at 08:24:02AM -0700, Scott Long wrote: > S> One of the stated goals for 5-STABLE was that we would retain API and > S> ABI stability except when absolutely neccessary when fixing bugs or > S> security holes. I know that we didn't explicitily name netgraph in > S> the list of 'stable' subsystems, but it was assumed to be part of > S> 'networking'. Can you please explain why this ABI change is required > S> for 5-STABLE? > > We are going to test netgraph(4) for mpsafeness soon. Without this change > it is impossible to turn netgraph ISR to MPSAFE. We are not going to enable > MPSAFE netgraph ISR in RELENG_5, but we want to bring RELENG_5 to a state, > when a small a 1-line patch enables MPSAFE ISR. In this case users running > RELENG_5 will have an easy opportunity to test. > > I'm afraid that CURRENT userbase does not run netgraph widely, and thus > we will not find resuorces for thourough testing. > > I understand all problems caused by API change, but we need this to go on. > > P.S. And only a small number of nodes affected. > I understand the desire for forward progress here, but we did declare API and ABI stability. Is there any way to achieve your goals and still keep backwards compatiblity? Maybe create a new interface that will be the default in 6.0, and allow 5.x to be the transition point to it? I'm going to ask that this be reverted otherwise. Scotthome | help
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