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Custom ioctl on Linux FORE200E ATM driver

  1. Jun 12, 2012 #1
    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 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
     
    Last edited: Jun 12, 2012
  2. jcsd
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