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From: Leandro Lucarella <luca@llucax.com.ar>
To: Jon Maloy <jon.maloy@ericsson.com>
Cc: Neil Horman <nhorman@tuxdriver.com>,
	"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"tipc-discussion@lists.sourceforge.net" 
	<tipc-discussion@lists.sourceforge.net>,
	David Miller <davem@davemloft.net>
Subject: Re: Linux 2.6.35/TIPC 2.0 ABI breaking changes
Date: Wed, 20 Oct 2010 16:23:50 -0300	[thread overview]
Message-ID: <20101020192350.GR8781@llucax.com.ar> (raw)
In-Reply-To: <20101020182851.GP8781@llucax.com.ar>

Leandro Lucarella, el 20 de octubre a las 15:28 me escribiste:
> Jon Maloy, el 20 de octubre a las 14:10 me escribiste:
> > <...>
> > > > 
> > > > Remember, permitting both is a superset of the current one 
> > > (NBO only) 
> > > > so it is fully backwards compatible. We break absolutly nothing by 
> > > > permitting this.
> > > > 
> > > Thats effectively reverting both our patches though, isn't it 
> > > (not that I'm disagreeing with it, just looking for 
> > > clarification).  If we revert my patch and reintroduce the 
> > > htohl mechanism which tracks endianess, we might as well 
> > > revert the TIPC_SUB_SERVICE flag as well, yeah?
> > 
> > Absolutely. I think it was a mistake to change that value.
> > But I don't think we need to reintroduce the htohl(). That
> > was just one way of doing it. If I understood your suggestion
> > from yesterday correctly you converted the whole message within
> > one if()clause, without any htohl(). I have have no problem with 
> > that approach.
> 
> There is a difference between both solutions, the htohl() version
> tracked the need for swap as a struct subscription member (which was
> used when sending back events). Neils patch doesn't do that tracking.
> I don't really know the implications of this, but maybe it would be
> a wise idea to stay in the safe side and revert both patches for now.

BTW, I tried 2.6.37 reverting both offending patches and everything
seems to work well.

-- 
Leandro Lucarella (AKA luca)                     http://llucax.com.ar/
----------------------------------------------------------------------
GPG Key: 5F5A8D05 (F8CD F9A7 BF00 5431 4145  104C 949E BFB6 5F5A 8D05)
----------------------------------------------------------------------
Vivimos en una época muy contemporánea, Don Inodoro...
	-- Mendieta

WARNING: multiple messages have this Message-ID (diff)
From: Leandro Lucarella <luca@llucax.com.ar>
To: Jon Maloy <jon.maloy@ericsson.com>
Cc: "netdev@vger.kernel.org" <netdev@vger.kernel.org>,
	"tipc-discussion@lists.sourceforge.net"
	<tipc-discussion@lists.sourceforge.net>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Neil Horman <nhorman@tuxdriver.com>,
	David Miller <davem@davemloft.net>
Subject: Re: Linux 2.6.35/TIPC 2.0 ABI breaking changes
Date: Wed, 20 Oct 2010 16:23:50 -0300	[thread overview]
Message-ID: <20101020192350.GR8781@llucax.com.ar> (raw)
In-Reply-To: <20101020182851.GP8781@llucax.com.ar>

Leandro Lucarella, el 20 de octubre a las 15:28 me escribiste:
> Jon Maloy, el 20 de octubre a las 14:10 me escribiste:
> > <...>
> > > > 
> > > > Remember, permitting both is a superset of the current one 
> > > (NBO only) 
> > > > so it is fully backwards compatible. We break absolutly nothing by 
> > > > permitting this.
> > > > 
> > > Thats effectively reverting both our patches though, isn't it 
> > > (not that I'm disagreeing with it, just looking for 
> > > clarification).  If we revert my patch and reintroduce the 
> > > htohl mechanism which tracks endianess, we might as well 
> > > revert the TIPC_SUB_SERVICE flag as well, yeah?
> > 
> > Absolutely. I think it was a mistake to change that value.
> > But I don't think we need to reintroduce the htohl(). That
> > was just one way of doing it. If I understood your suggestion
> > from yesterday correctly you converted the whole message within
> > one if()clause, without any htohl(). I have have no problem with 
> > that approach.
> 
> There is a difference between both solutions, the htohl() version
> tracked the need for swap as a struct subscription member (which was
> used when sending back events). Neils patch doesn't do that tracking.
> I don't really know the implications of this, but maybe it would be
> a wise idea to stay in the safe side and revert both patches for now.

BTW, I tried 2.6.37 reverting both offending patches and everything
seems to work well.

-- 
Leandro Lucarella (AKA luca)                     http://llucax.com.ar/
----------------------------------------------------------------------
GPG Key: 5F5A8D05 (F8CD F9A7 BF00 5431 4145  104C 949E BFB6 5F5A 8D05)
----------------------------------------------------------------------
Vivimos en una época muy contemporánea, Don Inodoro...
	-- Mendieta

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  reply	other threads:[~2010-10-20 19:24 UTC|newest]

Thread overview: 47+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20100927163823.GD2834@integratech.com.ar>
     [not found] ` <29C1DC0826876849BDD9F1C67ABA2943090B67EC@ala-mail09.corp.ad.wrs.com>
     [not found]   ` <20100929153805.GG2834@integratech.com.ar>
     [not found]     ` <29C1DC0826876849BDD9F1C67ABA29430914AC18@ala-mail09.corp.ad.wrs.com>
     [not found]       ` <20101001150034.GS8781@llucax.com.ar>
     [not found]         ` <0434463FDA60A94FA978ACA44617682DEE843EDD79@EUSAACMS0702.eamcs.ericsson.se>
     [not found]           ` <20101001162346.GV8781@llucax.com.ar>
     [not found]             ` <4CA69F18.7000005@amln.net>
     [not found]               ` <0434463FDA60A94FA978ACA44617682DEE8446A03B@EUSAACMS0702.eamcs.ericsson.se>
2010-10-18 15:04                 ` Linux 2.6.35/TIPC 2.0 ABI breaking changes [was: TIPC 2.0 and TIPC_SUB_SERVICE] Leandro Lucarella
2010-10-18 18:46                   ` Leandro Lucarella
2010-10-18 18:46                     ` Leandro Lucarella
2010-10-18 20:42                     ` Paul Gortmaker
2010-10-18 22:17                       ` Linux 2.6.35/TIPC 2.0 ABI breaking changes David Miller
2010-10-18 23:11                         ` Paul Gortmaker
2010-10-18 23:38                           ` Leandro Lucarella
2010-10-18 23:38                             ` Leandro Lucarella
2010-10-18 23:45                           ` Neil Horman
2010-10-18 23:45                             ` Neil Horman
2010-10-19  2:16                             ` Leandro Lucarella
2010-10-19  8:16                               ` David Miller
2010-10-19 11:04                                 ` Neil Horman
2010-10-19 11:04                                   ` Neil Horman
2010-10-19 11:06                                   ` David Miller
2010-10-19 13:19                                   ` Leandro Lucarella
2010-10-19 13:19                                     ` Leandro Lucarella
2010-10-19 13:28                                     ` Neil Horman
2010-10-19 13:28                                       ` Neil Horman
2010-10-19 20:18                                     ` Neil Horman
2010-10-19 20:18                                       ` Neil Horman
2010-10-19 20:43                                       ` Leandro Lucarella
2010-10-19 22:03                                         ` Leandro Lucarella
2010-10-19 22:03                                           ` Leandro Lucarella
2010-10-20 17:20                                       ` Leandro Lucarella
2010-10-20 17:20                                         ` Leandro Lucarella
2010-10-20 17:57                                         ` Jon Maloy
2010-10-20 17:57                                           ` Jon Maloy
2010-10-20 18:04                                           ` Neil Horman
2010-10-20 18:04                                             ` Neil Horman
2010-10-20 18:10                                             ` Jon Maloy
2010-10-20 18:10                                               ` Jon Maloy
2010-10-20 18:28                                               ` Leandro Lucarella
2010-10-20 18:28                                                 ` Leandro Lucarella
2010-10-20 19:23                                                 ` Leandro Lucarella [this message]
2010-10-20 19:23                                                   ` Leandro Lucarella
2010-10-20 22:59                                                   ` Leandro Lucarella
2010-10-20 22:59                                                     ` Leandro Lucarella
2010-10-20 18:24                                           ` Leandro Lucarella
2010-10-20 18:37                                             ` Jon Maloy
2010-10-20 18:37                                               ` Jon Maloy
2010-10-20 18:44                                               ` Leandro Lucarella
2010-10-20 18:44                                                 ` Leandro Lucarella
2010-10-20 17:57                                         ` Neil Horman
2010-10-18 23:58                         ` Alan Cox
2010-10-18 15:04                 ` Linux 2.6.35/TIPC 2.0 ABI breaking changes [was: TIPC 2.0 and TIPC_SUB_SERVICE] Leandro Lucarella
2010-10-20  1:09 Linux 2.6.35/TIPC 2.0 ABI breaking changes nhorman

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