For socket ioctls the sock_ioctl code is called - net/socket.c and that
calls the protocol specific handler for the socket (eg
inet_ioctl in net/ipv4/af_inet.c) which then calls dev_ioctl.
> If I could figure out how to add a /proc entry, maybe I could
> just control these things by echo'ing commands to that file?
The wanrouter has a /proc directory it puts physical devices in, which you
can then open and ioctl on to create logical channels. Thats a fairly clean
example of driving /proc
Alan
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