When is it safe to enable filtering in an NKE?
When is it safe to enable filtering in an NKE?
- Subject: When is it safe to enable filtering in an NKE?
- From: Doug John <email@hidden>
- Date: Sun, 8 Feb 2009 16:11:07 -0800
Hi,
I have an NKE that performs filtering on particular interfaces (calling iflt_attach). As suggested here:
the interfaces that are used in the NKE are set via a daemon which is loaded on startup with launchd.
To ensure the daemon doesn't enable filtering on the interfaces too early, it sets up a matching notification for both my kext and IOEthernetInterface.
Is IOEthernetInterface the best service to match on to wait until the interfaces are all available? What if there are many instances of IOEthernetInterface, some appearing on PCIe cards? How can I be sure that all of the interfaces have been loaded before starting up the daemon to enable filtering in the NKE?
Thanks,
DJ
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