user-to-kernel shared memory with net_device

[Chris Ross <chris@compilednetworks.com>]

I have a net_device driver that has a fairly large (1-2MB) set of
stats that a user space process needs to read from time to time. I had
assumed the optimal ipc mechanism would be shared memory. Now that I'm
getting around to implementation of this side of the project I'm
getting a bit stuck.

All of the mmap examples I can find seem to be for character devices.
Do I need a character device that implements mmap and proxies access
to the net_device's stats, or is there a way to mmap directly to a
net_device structure? Also, is this the excepted method when a
userspace process needs to read large tables from a driver?

thanks,

-chris