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

Re: Question on KPI / NKE : sys/select.h : struct selinfo ?
by Justin Walker 05 May '05

05 May '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com On May 5, 2005, at 10:59, chas williams - CONTRACTOR wrote: any plans for making a kpi version of net_add_domain and net_add_proto? There are no plans at this time for net_add_domain and net_add_proto. We are interested in hearing about what you might need such functionality for. lets say that i needed to provide a new protocol family for something like ATM? Regards, Justin -- Justin C. Walker, Curmudgeon-At-Large Institute for General Semantics -------- "Weaseling out of things is what separates us from the animals. Well, except the weasel." - Homer J Simpson -------- _______________________________________________ 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.… In message <83ADDC21-F226-47B5-A385-F1113C7402A5(a)apple.com>,Josh Graessley writ es: Although I would think the ability to add domains and protocol handlers is important, I don't understand how that affects "something like ATM". (Something like) ATM is media, right? Wouldn't you want support for a new device family? This email sent to site_archiver(a)lists.apple.com

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Re: Question on KPI / NKE : sys/select.h : struct selinfo ?
by chas williams - CONTRACTOR 05 May '05

05 May '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com In message <83ADDC21-F226-47B5-A385-F1113C7402A5(a)apple.com>,Josh Graessley writ es: >> any plans for making a kpi version of net_add_domain and >> net_add_proto? > >There are no plans at this time for net_add_domain and net_add_proto. >We are interested in hearing about what you might need such >functionality for. lets say that i needed to provide a new protocol family for something like ATM? _______________________________________________ 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: Does Tiger not implement mBufs?
by Paul Chinn 05 May '05

05 May '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com On May 5, 2005, at 10:44 AM, Josh Graessley wrote: -josh On May 5, 2005, at 10:35 AM, harland harrison wrote: _______________________________________________ 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/pchinn%40apple.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.… Just to clarify- Tiger maintains binary backwards compatibility with pre-Tiger IONetworkingFamily drivers. However if you are compiling a driver under Tiger it will require some modification to use the mbuf kpi accessor function instead of direct access to the mbuf. Tiger uses mbufs. The mbufs are allocated and manipulated through accessor functions. IOKit based Ethernet drivers should continue to work without modification. If you weren't going through IOKit, you may need to move your driver over to the KPIs. On A Tiger system with developer tools installed, the following URL should get you to the appropriate documentation: <file:///Developer/ADC%20Reference%20Library/referencelibrary/Darwin/ idxKernel-date.html> If you have specific questions about the KPIs, this is a good place to ask them. Our USB Ethernet shim is not working with the released version of Tiger. The shim uses mBufs successfully on 10.3. Has there been some change or work around required to get memory for a kext in 10.4 ? Has anyone else found a similar problem? Is this the right list for this subject? thanks Harland Harrison 2wire.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/ jgraessley%40apple.com This email sent to jgraessley(a)apple.com This email sent to pchinn(a)apple.com This email sent to site_archiver(a)lists.apple.com

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Re: Does Tiger not implement mBufs?
by Josh Graessley 05 May '05

05 May '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com -josh On May 5, 2005, at 10:35 AM, harland harrison wrote: _______________________________________________ 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 Tiger uses mbufs. The mbufs are allocated and manipulated through accessor functions. IOKit based Ethernet drivers should continue to work without modification. If you weren't going through IOKit, you may need to move your driver over to the KPIs. On A Tiger system with developer tools installed, the following URL should get you to the appropriate documentation: <file:///Developer/ADC%20Reference%20Library/referencelibrary/Darwin/ idxKernel-date.html> If you have specific questions about the KPIs, this is a good place to ask them. Our USB Ethernet shim is not working with the released version of Tiger. The shim uses mBufs successfully on 10.3. Has there been some change or work around required to get memory for a kext in 10.4 ? Has anyone else found a similar problem? Is this the right list for this subject? thanks Harland Harrison 2wire.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/jgraessley% 40apple.com This email sent to jgraessley(a)apple.com smime.p7s

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Does Tiger not implement mBufs?
by harland harrison 05 May '05

05 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: Question on KPI / NKE : sys/select.h : struct selinfo ?
by Josh Graessley 05 May '05

05 May '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com On May 5, 2005, at 8:48 AM, chas williams - CONTRACTOR wrote: how about access to kernel_flock? i suspect one will need to get the kernel funnel if you are going to issue a selwakeup(). -josh _______________________________________________ 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 In message <36FDEF53-009B-4106-8570-0C1F7913EDC4(a)apple.com>,Jim Magee writes: Now that we have discovered a couple of drivers that could otherwise be KPI-conforming if not for this, we will be creating a KPI to allocate a selinfo structure dynamically. In the meantime, you can just allocate memory large to be safe. Future versions of selinfo will be smaller than the current one. But to be safe. at least doubling the size of the current selinfo struct should suffice (to say 64 bytes). You should have no reason to look inside the structure. The kernel_flock was part of the old split funnel. The funnels are gone. You are responsible for locking your own data structures. The kernel uses a variety of locks to protect it's own internal data structures. any plans for making a kpi version of net_add_domain and net_add_proto? There are no plans at this time for net_add_domain and net_add_proto. We are interested in hearing about what you might need such functionality for. smime.p7s

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Re: Question on KPI / NKE : sys/select.h : struct selinfo ?
by chas williams - CONTRACTOR 05 May '05

05 May '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com In message <36FDEF53-009B-4106-8570-0C1F7913EDC4(a)apple.com>,Jim Magee writes: >Now that we have discovered a couple of drivers that could otherwise >be KPI-conforming if not for this, we will be creating a KPI to >allocate a selinfo structure dynamically. In the meantime, you can >just allocate memory large to be safe. Future versions of selinfo >will be smaller than the current one. But to be safe. at least >doubling the size of the current selinfo struct should suffice (to >say 64 bytes). You should have no reason to look inside the structure. how about access to kernel_flock? i suspect one will need to get the kernel funnel if you are going to issue a selwakeup(). any plans for making a kpi version of net_add_domain and net_add_proto? _______________________________________________ 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: Question on KPI / NKE : sys/select.h : struct selinfo ?
by Jim Magee 05 May '05

05 May '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com A question on sys/select.h / selinfo as used in a kext: I see this defined in sys/select.h: /* * Used to maintain information about processes that wish to be * notified when I/O becomes possible. */ struct selinfo; __BEGIN_DECLS void selrecord(proc_t selector, struct selinfo *, void *); void selwakeup(struct selinfo *); void selthreadclear(struct selinfo *); __END_DECLS --Jim _______________________________________________ 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.… On May 5, 2005, at 2:12 AM, Steven Palm wrote: But the selinfo structure is not actually defined anywhere here... Should it be? The code I am trying to work with is doing this definition and these calls: As with the other structures that Josh pointed out, we (seemingly incorrectly) determined that it would be difficult to create a KPI- conforming driver that used the selinfo mechanism. So we made it opaque (its size did grow in Tiger/Darwin8 making existing binaries that allocated them incompatible). Now that we have discovered a couple of drivers that could otherwise be KPI-conforming if not for this, we will be creating a KPI to allocate a selinfo structure dynamically. In the meantime, you can just allocate memory large to be safe. Future versions of selinfo will be smaller than the current one. But to be safe. at least doubling the size of the current selinfo struct should suffice (to say 64 bytes). You should have no reason to look inside the structure. This email sent to site_archiver(a)lists.apple.com

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Write on specific IOMedia through filter driver
by Imran Kazi 05 May '05

05 May '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Thread-index: AcVRdFz9wcyr+5glRyaORGWeWLUung== _______________________________________________ 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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Communication between kext
by Anshul Makkar 05 May '05

05 May '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Organization: Samsung India Electronics Limited Hello, I want to call functions of a kext from other kext . ie I want communication between kext. How to achieve it. Please let me know if any links or any other information is available to achieve the above task. Basically I will be registrying my kext as the graphics driver(kext ) so that all the calls that I will get to draw can be passed to original graphics kext. _______________________________________________ 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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