Re: NKE Manager
Re: NKE Manager
- Subject: Re: NKE Manager
- From: Michael Cashwell <email@hidden>
- Date: Tue, 15 Oct 2002 18:48:57 -0400
On Friday, October 11, 2002, at 06:32 PM, Joshua Graessley wrote:
>
In Mac OS X 10.2, the header sys/kern_control.h defines the
>
AF_SYS_CONTROL protocol of PF_SYSTEM. This can be used to communicate
>
with and control kernel extensions. It has some limitations.
>
sys/kern_control.h has some documentation that should help you get
>
started. Unlike the NKE manager (PF_NKE), there is no sample code.
Thanks Josh (and Justin), this has been helpful.
Because my NKE needs the ability to distinguish multiple channels (for
the lack of a better term) I've decided to go with PF_SYSTEM as Josh
described. It supports the concept of a unit number (per NKE signature)
and that's just what I need.
The header sys/kern_control.h is pretty complete as to the use of the
API but I have one question. When userland code writes data to the NKE
and its ctl_write() function is called is the NKE responsible for
freeing the mbuf? My hunch is yes since it's consuming the buffer (ie:
not passing it on to anything else) but I wanted to confirm.
Thanks,
Mike
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