[Openswan Users] recognition of an openswan vpn during inetaddr_notifier callback

[Niall Noigiallach]

I'm not sure if this is best for the users or developers list.  I'll try
here fist:

I'm writing a kernel module to detect when a new interface is activated and
then apply some firewall rules if it's not a vpn (long story about why I'm
doing this in kernel space as opposed to using udev).

I'm assuming I'll need register a notifier for the inetaddr_chain
notification chain (as opposed to the net_dev chain) to make sure the
netfitler tables have been initialized.  In the callback I should get a
net_device that should give me all I need to determine if the underlying
device is a openswan vpn or not.

The question is: what should I be looking for?

The best thing I've found so far is net_device.dev.driver->owner->name
Althought I'm not sure what to match it against.
Any thoughts/suggestions??
My initial thought is that this should match KBUILD_MODNAME ... which is??

Thank you for your help!
Niall
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