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Date:      Tue, 17 Feb 2009 11:50:02 +0200
From:      Krassimir Slavchev <krassi@bulinfo.net>
To:        Julian Elischer <julian@elischer.org>
Cc:        Robert Watson <rwatson@FreeBSD.org>, current@FreeBSD.org, net@FreeBSD.org
Subject:   Re: HEADS UP: IFF_NEEDSGIANT consumers to be disabled, removed
Message-ID:  <499A884A.4040408@bulinfo.net>
In-Reply-To: <4999F7F9.4030204@elischer.org>
References:  <20080526110543.J26343@fledge.watson.org>	<alpine.BSF.2.00.0902161233440.5806@fledge.watson.org> <4999F7F9.4030204@elischer.org>

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Julian Elischer wrote:
> 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).

I still have such Digi/Arnet SYNC/570i PCI card and I used to use it for
a long time with 4.x and if_ar driver without any problems.

Thanks to John Hay for well written driver!

> 
> 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
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> 
> _______________________________________________
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> 

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