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Custom ioctl on Linux FORE200E ATM driver

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I need to pass a user-space pointer for a 64 bit memory chunk to the FORE200E Linux ATM driver so that the driver can write in it. I was thinking of using the ioctl() call to perform this custom "operation" of the recording the user-space pointer in the driver module.

I open the socket without a problem:

atmSocket = socket(PF_ATMPVC, SOCK_DGRAM, 0);

I can do setsockopt(atmSocket, ...), send(atmSocket, ...) and recv(atmSocket, ...) calls also without a problem.

However, regardless of the cmd I pass to the ioctl() call, it always fails with the "No such device" error message:

int someInt;
ioctl(atmSocket, FIOGETOWN, &someInt);
perror("ioctl");

-> ioctl: No such device

What am I doing wrong?

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Custom ioctl on Linux FORE200E ATM driver diogomiguelalves@gmail.com - 2012-06-12 03:49 -0700

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