ethcontrol.c

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/* ethcontrol.c - ethcontrol */

#include <xinu.h>

/*------------------------------------------------------------------------
 * ethcontrol - implement control function for a quark ethernet device
 *------------------------------------------------------------------------
 */
devcall ethcontrol(
    struct dentry *devptr, /* entry in device switch table */
    int32 func,            /* control function      */
    int32 arg1,            /* argument 1, if needed */
    int32 arg2             /* argument 2, if needed */
)
{
    struct ethcblk *ethptr; /* Ethertab entry pointer   */
    int32 retval = OK;      /* Return value of cntl function*/

    ethptr = &ethertab[devptr->dvminor];

    switch (func)
    {

        /* Get MAC address */

    case ETH_CTRL_GET_MAC:
        memcpy((byte *)arg1, ethptr->devAddress,
               ETH_ADDR_LEN);
        break;

    default:
        return SYSERR;
    }

    return retval;
}