Testing Interrupt Mode

[Paul Wilson]

I'm attempting to port some software from the Linux Kernel to the FreeBSD
kernel.

The code I'm currently working on establishes whether or not a given TCP
connection is in Active Open mode by calling 'in_interrupt()', which returns
nonzero if the processor is currently running in interrupt mode:

ActiveOpen = !in_interrupt();

I have failed to find the FreeBSD equivalent to this, and have found little
documentation on the topic as a whole. Could anyone please shed some light?

Thank you in advance,
Paul