May 2005 - Darwin-kernel - lists.apple.com

Re: Changes to sys/sockio.h
by Josh Graessley 19 May '05

19 May '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com -josh On May 18, 2005, at 5:06 PM, Joe Ridge wrote: Hi, sorry if this is the wrong list for this sort of inquiry. This email sent to jgraessley(a)apple.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com Those ioctls are not implemented on Mac OS X. They weren't implemented in 10.3 (and probably earlier releases too). The effective removal from the headers reflects the fact that those ioctls are not implemented on Mac OS X. In the sys/sockio.h that ships with 10.4, which is Darwin 8.0.0, the definitions for SIOCADDRT and SIOCDELRT have been wrapped in an #if 0 conditional, basically removing them from the file. I was wondering what the significance of this was? I've got some code I am trying to build, cfengine, and it uses SIOCADDRT, so I need to figure out how to approach this. Any input that any of you can give would be greatly appreciated. Thanks! _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/jgraessley% 40apple.com smime.p7s

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Changes to sys/sockio.h
by Joe Ridge 19 May '05

19 May '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Hi, sorry if this is the wrong list for this sort of inquiry. In the sys/sockio.h that ships with 10.4, which is Darwin 8.0.0, the definitions for SIOCADDRT and SIOCDELRT have been wrapped in an #if 0 conditional, basically removing them from the file. I was wondering what the significance of this was? I've got some code I am trying to build, cfengine, and it uses SIOCADDRT, so I need to figure out how to approach this. Any input that any of you can give would be greatly appreciated. Thanks! _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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Re: Communicatoin between loaded kext
by Dean Reece 18 May '05

18 May '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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Re: KPI replacement for sodisconnect?
by Brian Bergstrand 18 May '05

18 May '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On May 18, 2005, at 12:39 AM, Josh Graessley wrote: > > sock_shutdown should work fine to disconnect a TCP socket. > Yes, I thought of that right after I sent the email. Always seems to be the case. :) > There is a KPI hands-on session at WWDC. > > Kernel Extensions on Thursday from 2PM to 3:30PM in the Performance > & Tools lab. > Great! I will be there. > When you say that you are "tracking TCP state changes via access to > the raw TCP header", do you mean you look at the tcp control block? > There is no way to do that on Tiger. You can receive notification > of a number of state changes through a socket filter. That's what I was afraid of. I was hoping Tiger would not make the headers opaque as sockaddr (and others) was left in tact, so this is going to cause some major work. > What exactly are you trying to accomplish? Well, w/o going into too much detail, our product uses a complete abstraction layer for kernel services (malloc, threads, locks, etc) - -- included in that abstraction is an aysnc IP wrapper model that provides an abstraction over the socket interface -- all of this is done to make porting easier to other platforms, and it's actually making the move to Tiger much easier, as our product has a very large number of kexts. The IP abstraction model expects to be able to track TCP transition states. I'm going to get into the TCP conversion today, so I'll have a better idea of what Tiger breaks tomorrow. It already sounds like this is going to be a pain though. The ability to separately specify whether send/receive should upcall has caused some headaches already -- Tiger is all or none. Thanks for you replies, I appreciate it. > > -josh > > On May 17, 2005, at 10:08 PM, Brian Bergstrand wrote: > > >> -----BEGIN PGP SIGNED MESSAGE----- >> Hash: SHA1 >> >> Yes, I didn't mean to imply a re-use of a TCP socket -- just if >> sock_connect(INADDR_ANY) will cause a disconnect of the current >> connection. Our current model issues a disconnect because it needs to >> hang onto the socket for a while longer before actually closing it. I >> suppose I could do a retain before the close to keep the socket >> around. >> >> I also noticed that soabort is missing a KPI replacement -- we were >> using this to abort a connection in progress -- although retain/close >> should work there too. >> > Brian Bergstrand <http://www.bergstrand.org/brian/> PGP Key ID: 0xB6C7B6A2 -----BEGIN PGP SIGNATURE----- Version: PGP Desktop 9.0.1 (Build 2130) iQA/AwUBQothAHnR2Fu2x7aiEQLd9gCgvNKlkLNlwzVwOiG/mEew2SdXQsgAoJxL roqy4BISdkzv5xG8IVXae4qe =AQNs -----END PGP SIGNATURE----- _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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Communicatoin between loaded kext
by Anshul Makkar 18 May '05

18 May '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com User-agent: Mozilla Thunderbird 1.0.2 (Macintosh/20050317) What I am trying to do is : Hello, I am developing a filter graphics kext that will call the original graphics kext's functions. Is it possible to call a function of already loaded graphics kext( eg call alloc_texture function of ATIRadeon8500.kext ) from my filter kext . I dont have the source code for ATIRadeon8500 so no header file is availablle with us , only information that is availabe the symbols (eg ATIRadeon8500::allocate_Texture(), ATIRadeon8500::alloc_and_load_texture) . Now I want to call these functions from my graphics kext . In Dependencies I have given ATIRadeon8500 I am inheriting my class from ATIRadeon8500 which is failing , and that should be correct as how my application will find the class ATIRadeon8500 . eg class com_abc_driver_pqr : public ATIRadeon8500 ->error : class ATIRadeon8500 undeclared . The basic purpose is to inherit my class from ATIRadeon8500 , so as to call the functions of ATIRadeon from my own kext . In the example source code IOKitWithLibrary , they are preparing their own Library kext and I dont have that priviledge here. Is there a way to achive it. Thanking You _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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Re: tcplognke - does it exist?
by Quinn 18 May '05

18 May '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com S+E -- Quinn "The Eskimo!" <http://www.apple.com/developer/> Apple Developer Technical Support * Networking, Communications, Hardware _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… At 13:04 +0100 18/5/05, Mark Woollard wrote: A NKE example tcplognke is mentioned in the Tiger docs for NKE development as shipped with Xcode 2.0 but I can't find it. Where can I get the example source? It's currently being reviewed internally at Apple. If you write to <dts(a)apple.com>, we'll send you a draft copy. This email sent to site_archiver(a)lists.apple.com

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tcplognke - does it exist?
by Mark Woollard 18 May '05

18 May '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Thanks Mark _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… A NKE example tcplognke is mentioned in the Tiger docs for NKE development as shipped with Xcode 2.0 but I can't find it. Where can I get the example source? This email sent to site_archiver(a)lists.apple.com

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Re: KPI replacement for sodisconnect?
by Josh Graessley 18 May '05

18 May '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com sock_shutdown should work fine to disconnect a TCP socket. There is a KPI hands-on session at WWDC. <http://developer.apple.com/wwdc/labs/labs-osfoundations.html> -josh On May 17, 2005, at 10:08 PM, Brian Bergstrand wrote: -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I also noticed that soabort is missing a KPI replacement -- we were using this to abort a connection in progress -- although retain/close should work there too. I haven't really begun exploring our TCP conversion yet, as I expect it to be more difficult than the UDP one. For one, we are tracking TCP state changes via access to the raw TCP header. P.S. Is there going to be a KPI hands-on session at WWDC? Thanks. On May 17, 2005, at 11:37 PM, Josh Graessley wrote: TCP sockets aren't meant to be reused liked that. Just close the socket and open a new one for a new connection. sendto won't work with a TCP socket either. -josh On May 17, 2005, at 9:32 PM, Brian Bergstrand wrote: -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On May 17, 2005, at 6:42 PM, Josh Graessley wrote: You do this the same way in the kernel you would in user space. Connect again but specify the INADDR_ANY address (0.0.0.0). Yeah, it's sorta weird, but that's just the way it is. You can also connect directly to a different address. -josh On May 17, 2005, at 3:32 PM, Brian Bergstrand wrote: -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Am I missing something, or is there no KPI replacement for sodisconnect()? We were using this on UDP sockets to disassociate an address set with soconnect(). Brian Bergstrand <http://www.bergstrand.org/brian/> PGP Key ID: 0xB6C7B6A2 -----BEGIN PGP SIGNATURE----- Version: PGP Desktop 9.0.1 (Build 2130) iQA/AwUBQorFV3nR2Fu2x7aiEQJQcwCgnls3/rEqoMOvccDGZdPm+++8Qh0AoL5n zbTB85CC9Le7a73zdziSXPGs =zlt7 -----END PGP SIGNATURE----- Brian Bergstrand <http://www.bergstrand.org/brian/> PGP Key ID: 0xB6C7B6A2 -----BEGIN PGP SIGNATURE----- Version: PGP Desktop 9.0.1 (Build 2130) iQA/AwUBQorN8nnR2Fu2x7aiEQJukgCeIwPT9ulf3glFpX5l661bNqQf02MAn2Kz qxVD8SBKFImIIHII5ZCKZpUP =5KTo -----END PGP SIGNATURE----- _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com Kernel Extensions on Thursday from 2PM to 3:30PM in the Performance & Tools lab. When you say that you are "tracking TCP state changes via access to the raw TCP header", do you mean you look at the tcp control block? There is no way to do that on Tiger. You can receive notification of a number of state changes through a socket filter. What exactly are you trying to accomplish? Yes, I didn't mean to imply a re-use of a TCP socket -- just if sock_connect(INADDR_ANY) will cause a disconnect of the current connection. Our current model issues a disconnect because it needs to hang onto the socket for a while longer before actually closing it. I suppose I could do a retain before the close to keep the socket around. Thanks Josh. Does this also work for TCP sockets or will it return an error since there's an actual connection state? smime.p7s

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Re: KPI replacement for sodisconnect?
by Brian Bergstrand 18 May '05

18 May '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Yes, I didn't mean to imply a re-use of a TCP socket -- just if sock_connect(INADDR_ANY) will cause a disconnect of the current connection. Our current model issues a disconnect because it needs to hang onto the socket for a while longer before actually closing it. I suppose I could do a retain before the close to keep the socket around. I also noticed that soabort is missing a KPI replacement -- we were using this to abort a connection in progress -- although retain/close should work there too. I haven't really begun exploring our TCP conversion yet, as I expect it to be more difficult than the UDP one. For one, we are tracking TCP state changes via access to the raw TCP header. P.S. Is there going to be a KPI hands-on session at WWDC? Thanks. On May 17, 2005, at 11:37 PM, Josh Graessley wrote: > > TCP sockets aren't meant to be reused liked that. Just close the > socket and open a new one for a new connection. sendto won't work > with a TCP socket either. > > -josh > > On May 17, 2005, at 9:32 PM, Brian Bergstrand wrote: > > >> -----BEGIN PGP SIGNED MESSAGE----- >> Hash: SHA1 >> >> Thanks Josh. Does this also work for TCP sockets or will it return an >> error since there's an actual connection state? >> >> On May 17, 2005, at 6:42 PM, Josh Graessley wrote: >> >> >> >>> >>> You do this the same way in the kernel you would in user space. >>> Connect again but specify the INADDR_ANY address (0.0.0.0). Yeah, >>> it's sorta weird, but that's just the way it is. You can also >>> connect directly to a different address. >>> >>> -josh >>> >>> On May 17, 2005, at 3:32 PM, Brian Bergstrand wrote: >>> >>> >>> >>> >>>> -----BEGIN PGP SIGNED MESSAGE----- >>>> Hash: SHA1 >>>> >>>> Am I missing something, or is there no KPI replacement for >>>> sodisconnect()? We were using this on UDP sockets to >>>> disassociate an >>>> address set with soconnect(). >>>> >>>> >>>> >>> >>> >>> >> >> Brian Bergstrand >> <http://www.bergstrand.org/brian/> PGP Key ID: 0xB6C7B6A2 >> >> >> -----BEGIN PGP SIGNATURE----- >> Version: PGP Desktop 9.0.1 (Build 2130) >> >> iQA/AwUBQorFV3nR2Fu2x7aiEQJQcwCgnls3/rEqoMOvccDGZdPm+++8Qh0AoL5n >> zbTB85CC9Le7a73zdziSXPGs >> =zlt7 >> -----END PGP SIGNATURE----- >> >> > > Brian Bergstrand <http://www.bergstrand.org/brian/> PGP Key ID: 0xB6C7B6A2 -----BEGIN PGP SIGNATURE----- Version: PGP Desktop 9.0.1 (Build 2130) iQA/AwUBQorN8nnR2Fu2x7aiEQJukgCeIwPT9ulf3glFpX5l661bNqQf02MAn2Kz qxVD8SBKFImIIHII5ZCKZpUP =5KTo -----END PGP SIGNATURE----- _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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Re: KPI replacement for sodisconnect?
by Josh Graessley 18 May '05

18 May '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com -josh On May 17, 2005, at 9:32 PM, Brian Bergstrand wrote: -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Thanks Josh. Does this also work for TCP sockets or will it return an error since there's an actual connection state? On May 17, 2005, at 6:42 PM, Josh Graessley wrote: You do this the same way in the kernel you would in user space. Connect again but specify the INADDR_ANY address (0.0.0.0). Yeah, it's sorta weird, but that's just the way it is. You can also connect directly to a different address. -josh On May 17, 2005, at 3:32 PM, Brian Bergstrand wrote: -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Am I missing something, or is there no KPI replacement for sodisconnect()? We were using this on UDP sockets to disassociate an address set with soconnect(). Brian Bergstrand <http://www.bergstrand.org/brian/> PGP Key ID: 0xB6C7B6A2 -----BEGIN PGP SIGNATURE----- Version: PGP Desktop 9.0.1 (Build 2130) iQA/AwUBQorFV3nR2Fu2x7aiEQJQcwCgnls3/rEqoMOvccDGZdPm+++8Qh0AoL5n zbTB85CC9Le7a73zdziSXPGs =zlt7 -----END PGP SIGNATURE----- _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com TCP sockets aren't meant to be reused liked that. Just close the socket and open a new one for a new connection. sendto won't work with a TCP socket either. smime.p7s

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