site_archiver@lists.apple.com Delivered-To: darwin-kernel@lists.apple.com Hi Aingoppa, see my comments in-line. Best regards Michael On Oct 19, 2007, at 10:26 PM, Gi youl Kim wrote: Hi Micheal: The drawbacks you posted are the reason why I want to code without unsupported APIs. If you implemented SCTP with socket support, let me know the functions to register sockets which are supported by Apple. My point is: There is no supported API which you can use to implement a transport protocol. The application can just use sockets for SCTP as if the SCTP implementation came from Apple just like TCP. By the way, what is kernel sources and headers and the headers provided by Apple? I have xnu-792.18.15 sources and MacOSX10.*.sdk. Do you mean that I should use MacOSX10.*.sdk? We use the /Developer/SDKs/MacOSX10.4u.sdk and some header files from the latest xnu sources. If you want, I can send you the XCode project. Then you can see how we use it... FYI My protocol is 'LPX' which has protocol type 0x88ad. LPX is used for our product which is kind of storage over the ethernet. So you want to implement a protocol on top of ethernet... Not sure about the APIs at that level... Here is plist which I use <dict> <key>com.apple.kpi.bsd</key> <string>8.0.0</string> <key>com.apple.kpi.iokit</key> <string>8.0.0</string> <key>com.apple.kpi.libkern</key> <string>8.0.0</string> <key>com.apple.kpi.mach</key> <string>8.0.0</string> <key>com.apple.kpi.unsupported</key> <string>8.0.0</string> </dict> Hi Aingoppa, You need to use <dict> <key>com.apple.kernel</key> <string>8.10.1</string> </dict> in your Info.plist file and also use some headers from the kernel sources instead of the headers provided by Apple. Best regards Michael On Oct 19, 2007, at 5:24 PM, Gi youl Kim wrote: I want to create a protocol which support socket interface. I could create one using net_add_proto() and net_del_proto(). But those functions are included by Unsupported.kext. And worse, some functions like sbfree() was not even exported. So I had to use codes in open xnu source to the protocol work. Aingoppa. _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/michael.tuexen% 40lurchi.franken.de This email sent to michael.tuexen@lurchi.franken.de _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.a... On 10/19/07, Michael Tuexen <Michael.Tuexen@lurchi.franken.de> wrote: what protocol do you want to implement? We have implemented SCTP, a transport protocol. Basically, it is the same code as in the FreeBSD 7.0 kernel, but with some changes for Mac OS X (locking, timers). This all and the usage of net_add_proto() and net_del_proto() is an unsupported API and has several drawbacks: 1. Apple can change it any time or make it impossible to implement transport protocols via NKEs. Fortunately, we could use the API from 10.3.9 to 10.4.10. Not sure about 10.5. 2. You can build a NKE only for one specific Mac OS X version. Although, you can build a universal binary for the NKE, it does only load on Intel or PPC, because the kernel has different versions. 3. You really depend on Apple, providing the source for the kernel to get the header files you need (you do not need the source files). This means you can not delevop/test a Leopard version until Apple releases the sources for a Leopard kernel. Not sure when this will happen. Currently not even the 10.4.10 sources are available. Can you create a socket protocol which does not use Unsupported.kext? If you can't, how can you create a protocol? This email sent to site_archiver@lists.apple.com