Date: Mon, 16 Feb 2009 15:34:17 -0800 From: Julian Elischer <julian@elischer.org> To: Robert Watson <rwatson@FreeBSD.org> Cc: current@FreeBSD.org, net@FreeBSD.org Subject: Re: HEADS UP: IFF_NEEDSGIANT consumers to be disabled, removed Message-ID: <4999F7F9.4030204@elischer.org> In-Reply-To: <alpine.BSF.2.00.0902161233440.5806@fledge.watson.org> References: <20080526110543.J26343@fledge.watson.org> <alpine.BSF.2.00.0902161233440.5806@fledge.watson.org>
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Robert Watson wrote: > > (Bcc to arch@) > > On Mon, 26 May 2008, Robert Watson wrote: > >> Just to keep track of things: >> >> http://wiki.freebsd.org/NONMPSAFE_DEORBIT > > Delayed by about six months, the merge and switch to the new USB stack > in 8.x means that we're now fairly close to being able to pick up this > project again. The goal remains to eliminate IFF_NEEDSGIANT, which is > (mostly) the last piece of non-MPSAFE compatibility infrastructure in > the network stack in -CURRENT. I removed support for non-MPSAFE network > protocols before 7.0, and this is the support for non-MPSAFE network > device drivers. As of the current moment in HEAD, the following drivers > are flagged wth IFF_NEEDSGIANT: > > General network device drivers that still require Giant: > > if_ar > if_ray > if_sl > if_sr if_sr and if_ar are really simple and could probably be converted "trivially".. especially if their netgraph code is used. however I wonder if anyone still has that hardware (they are drivers for two sync serial cards). John Hay must have had some when he wrote the driver... > > Old USB network device drivers: > > if_axe > if_cdce > if_cue > if_kue > if_rue > if_rum > if_udav > if_upgt > if_ural > if_urtw > if_zyd > > Network device drivers intimately tangled with the old TTY code: > > if_cx > if_ppp > lf_sl > > A network device driver that appears to conditionally use IFF_NEEDSGIANT > for the purposes of (sometimes) interacting with the old USB code: > > if_ndis > > The following schedule is proposed, assuming nothing goes horribly wrong > with the new USB code in the next few weeks, and remaining nits relating > to USB network and 802.11 drivers are handled: > > 16 February 2009 HEADS UP to lists (this e-mail) > 01 March 2009 Disable build of all IFF_NEEDSGIANT drivers in 8.x > 01 April 2009 Remove all IFF_NEEDSGIANT drivers from 8.x > > In the next couple of weeks, I'd like to resolve the status of (and > eliminate) the if_ndis conditional use of IFF_NEEDSGIANT. There's also > a chance that if_sl will get updated by Ed and myself to work with the > new locking and TTY world orders -- the lock is easy, but the TTY update > takes a bit of work. Perhaps someone will feel moved to do this for > if_ppp and possibly if_cx as well. > > Robert N M Watson > Computer Laboratory > University of Cambridge > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org"
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