/*----------------------------------------------------------------
* p80211knetdev_do_ioctl
*
* Handle an ioctl call on one of our devices. Everything Linux
* ioctl specific is done here. Then we pass the contents of the
* ifr->data to the request message handler.
*
* Arguments:
* dev Linux kernel netdevice
* ifr Our private ioctl request structure, typed for the
* generic struct ifreq so we can use ptr to func
* w/o cast.
*
* Returns:
* zero on success, a negative errno on failure. Possible values:
* -ENETDOWN Device isn't up.
* -EBUSY cmd already in progress
* -ETIME p80211 cmd timed out (MSD may have its own timers)
* -EFAULT memory fault copying msg from user buffer
* -ENOMEM unable to allocate kernel msg buffer
* -EINVAL bad magic, it the cmd really for us?
* -EintR sleeping on cmd, awakened by signal, cmd cancelled.
*
* Call Context:
* Process thread (ioctl caller). TODO: SMP support may require
* locks.
*----------------------------------------------------------------
*/
static int p80211knetdev_do_ioctl(struct net_device *dev,
struct ifreq *ifr, int cmd)
{
int result = 0;
struct p80211ioctl_req *req = (struct p80211ioctl_req *)ifr;
struct wlandevice *wlandev = dev->ml_priv;
u8 *msgbuf;
netdev_dbg(dev, "rx'd ioctl, cmd=%d, len=%d\n", cmd, req->len);
#ifdef SIOCETHTOOL
if (cmd == SIOCETHTOOL) {
result =
p80211netdev_ethtool(wlandev, (void __user *)ifr->ifr_data);
goto bail;
}
#endif
/* Test the magic, assume ifr is good if it's there */
if (req->magic != P80211_IOCTL_MAGIC) {
result = -EINVAL;
goto bail;
}
if (cmd == P80211_IFTEST) {
result = 0;
goto bail;
} else if (cmd != P80211_IFREQ) {
result = -EINVAL;
goto bail;
}
/* Allocate a buf of size req->len */
msgbuf = kmalloc(req->len, GFP_KERNEL);
if (msgbuf) {
if (copy_from_user(msgbuf, (void __user *)req->data, req->len))
result = -EFAULT;
else
result = p80211req_dorequest(wlandev, msgbuf);
if (result == 0) {
if (copy_to_user
((void __user *)req->data, msgbuf, req->len)) {
result = -EFAULT;
}
}
kfree(msgbuf);
} else {
result = -ENOMEM;
}
bail:
/* If allocate,copyfrom or copyto fails, return errno */
return result;
}
/*----------------------------------------------------------------
* p80211knetdev_do_ioctl
*
* Handle an ioctl call on one of our devices. Everything Linux
* ioctl specific is done here. Then we pass the contents of the
* ifr->data to the request message handler.
*
* Arguments:
* dev Linux kernel netdevice
* ifr Our private ioctl request structure, typed for the
* generic struct ifreq so we can use ptr to func
* w/o cast.
*
* Returns:
* zero on success, a negative errno on failure. Possible values:
* -ENETDOWN Device isn't up.
* -EBUSY cmd already in progress
* -ETIME p80211 cmd timed out (MSD may have its own timers)
* -EFAULT memory fault copying msg from user buffer
* -ENOMEM unable to allocate kernel msg buffer
* -ENOSYS bad magic, it the cmd really for us?
* -EINTR sleeping on cmd, awakened by signal, cmd cancelled.
*
* Call Context:
* Process thread (ioctl caller). TODO: SMP support may require
* locks.
----------------------------------------------------------------*/
static int p80211knetdev_do_ioctl(netdevice_t *dev, struct ifreq *ifr, int cmd)
{
int result = 0;
p80211ioctl_req_t *req = (p80211ioctl_req_t*)ifr;
wlandevice_t *wlandev = (wlandevice_t*)dev->priv;
UINT8 *msgbuf;
DBFENTER;
WLAN_LOG_DEBUG(2, "rx'd ioctl, cmd=%d, len=%d\n", cmd, req->len);
#if WIRELESS_EXT < 13
/* Is this a wireless extensions ioctl? */
if ((cmd >= SIOCIWFIRST) && (cmd <= SIOCIWLAST)) {
if ((result = p80211wext_support_ioctl(dev, ifr, cmd))
!= (-EOPNOTSUPP)) {
goto bail;
}
}
#endif
#ifdef SIOCETHTOOL
if (cmd == SIOCETHTOOL) {
result = p80211netdev_ethtool(wlandev, (void __user *) ifr->ifr_data);
goto bail;
}
#endif
/* Test the magic, assume ifr is good if it's there */
if ( req->magic != P80211_IOCTL_MAGIC ) {
result = -ENOSYS;
goto bail;
}
if ( cmd == P80211_IFTEST ) {
result = 0;
goto bail;
} else if ( cmd != P80211_IFREQ ) {
result = -ENOSYS;
goto bail;
}
/* Allocate a buf of size req->len */
if ((msgbuf = kmalloc( req->len, GFP_KERNEL))) {
if ( copy_from_user( msgbuf, (void __user *) req->data, req->len) ) {
result = -EFAULT;
} else {
result = p80211req_dorequest( wlandev, msgbuf);
}
if ( result == 0 ) {
if ( copy_to_user( (void __user *) req->data, msgbuf, req->len)) {
result = -EFAULT;
}
}
kfree(msgbuf);
} else {
result = -ENOMEM;
}
bail:
DBFEXIT;
return result; /* If allocate,copyfrom or copyto fails, return errno */
}
