hamradio: use ndo_siocdevprivate

hamradio uses a set of private ioctls that do seem to work
correctly in compat mode, as they only rely on the ifr_data
pointer.

Move them over to the ndo_siocdevprivate callback as a cleanup.

Cc: Thomas Sailer <[e-mail]>
Cc: Joerg Reuter <[e-mail]>
Cc: Jean-Paul Roubelat <[e-mail]>
Cc: [e-mail]
Signed-off-by: Arnd Bergmann <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/net/hamradio/baycom_epp.c

···
 
 /* --------------------------------------------------------------------- */
 
-static int baycom_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+static int baycom_siocdevprivate(struct net_device *dev, struct ifreq *ifr,
+				 void __user *data, int cmd)
 {
 	struct baycom_state *bc = netdev_priv(dev);
 	struct hdlcdrv_ioctl hi;
···
 	if (cmd != SIOCDEVPRIVATE)
 		return -ENOIOCTLCMD;
 
-	if (copy_from_user(&hi, ifr->ifr_data, sizeof(hi)))
+	if (copy_from_user(&hi, data, sizeof(hi)))
 		return -EFAULT;
 	switch (hi.cmd) {
 	default:
···
 		return HDLCDRV_PARMASK_IOBASE;
 
 	}
-	if (copy_to_user(ifr->ifr_data, &hi, sizeof(hi)))
+	if (copy_to_user(data, &hi, sizeof(hi)))
 		return -EFAULT;
 	return 0;
 }
···
 static const struct net_device_ops baycom_netdev_ops = {
 	.ndo_open	     = epp_open,
 	.ndo_stop	     = epp_close,
-	.ndo_do_ioctl	     = baycom_ioctl,
+	.ndo_siocdevprivate  = baycom_siocdevprivate,
 	.ndo_start_xmit      = baycom_send_packet,
 	.ndo_set_mac_address = baycom_set_mac_address,
 };

drivers/net/hamradio/baycom_par.c

···
  * ===================== hdlcdrv driver interface =========================
  */
 
-static int baycom_ioctl(struct net_device *dev, struct ifreq *ifr,
+static int baycom_ioctl(struct net_device *dev, void __user *data,
 			struct hdlcdrv_ioctl *hi, int cmd);
 
 /* --------------------------------------------------------------------- */
···
 
 /* --------------------------------------------------------------------- */
 
-static int baycom_ioctl(struct net_device *dev, struct ifreq *ifr,
+static int baycom_ioctl(struct net_device *dev, void __user *data,
 			struct hdlcdrv_ioctl *hi, int cmd)
 {
 	struct baycom_state *bc;
···
 
 	case HDLCDRVCTL_GETMODE:
 		strcpy(hi->data.modename, bc->options ? "par96" : "picpar");
-		if (copy_to_user(ifr->ifr_data, hi, sizeof(struct hdlcdrv_ioctl)))
+		if (copy_to_user(data, hi, sizeof(struct hdlcdrv_ioctl)))
 			return -EFAULT;
 		return 0;
 
···
 
 	case HDLCDRVCTL_MODELIST:
 		strcpy(hi->data.modename, "par96,picpar");
-		if (copy_to_user(ifr->ifr_data, hi, sizeof(struct hdlcdrv_ioctl)))
+		if (copy_to_user(data, hi, sizeof(struct hdlcdrv_ioctl)))
 			return -EFAULT;
 		return 0;
 
···
 
 	}
 
-	if (copy_from_user(&bi, ifr->ifr_data, sizeof(bi)))
+	if (copy_from_user(&bi, data, sizeof(bi)))
 		return -EFAULT;
 	switch (bi.cmd) {
 	default:
···
 #endif /* BAYCOM_DEBUG */
 
 	}
-	if (copy_to_user(ifr->ifr_data, &bi, sizeof(bi)))
+	if (copy_to_user(data, &bi, sizeof(bi)))
 		return -EFAULT;
 	return 0;
 

drivers/net/hamradio/baycom_ser_fdx.c

···
 
 /* --------------------------------------------------------------------- */
 
-static int baycom_ioctl(struct net_device *dev, struct ifreq *ifr,
+static int baycom_ioctl(struct net_device *dev, void __user *data,
 			struct hdlcdrv_ioctl *hi, int cmd);
 
 /* --------------------------------------------------------------------- */
···
 
 /* --------------------------------------------------------------------- */
 
-static int baycom_ioctl(struct net_device *dev, struct ifreq *ifr,
+static int baycom_ioctl(struct net_device *dev, void __user *data,
 			struct hdlcdrv_ioctl *hi, int cmd)
 {
 	struct baycom_state *bc;
···
 		sprintf(hi->data.modename, "ser%u", bc->baud / 100);
 		if (bc->opt_dcd <= 0)
 			strcat(hi->data.modename, (!bc->opt_dcd) ? "*" : "+");
-		if (copy_to_user(ifr->ifr_data, hi, sizeof(struct hdlcdrv_ioctl)))
+		if (copy_to_user(data, hi, sizeof(struct hdlcdrv_ioctl)))
 			return -EFAULT;
 		return 0;
 
···
 
 	case HDLCDRVCTL_MODELIST:
 		strcpy(hi->data.modename, "ser12,ser3,ser24");
-		if (copy_to_user(ifr->ifr_data, hi, sizeof(struct hdlcdrv_ioctl)))
+		if (copy_to_user(data, hi, sizeof(struct hdlcdrv_ioctl)))
 			return -EFAULT;
 		return 0;
 
···
 
 	}
 
-	if (copy_from_user(&bi, ifr->ifr_data, sizeof(bi)))
+	if (copy_from_user(&bi, data, sizeof(bi)))
 		return -EFAULT;
 	switch (bi.cmd) {
 	default:
···
 #endif /* BAYCOM_DEBUG */
 
 	}
-	if (copy_to_user(ifr->ifr_data, &bi, sizeof(bi)))
+	if (copy_to_user(data, &bi, sizeof(bi)))
 		return -EFAULT;
 	return 0;
 

drivers/net/hamradio/baycom_ser_hdx.c

···
 
 /* --------------------------------------------------------------------- */
 
-static int baycom_ioctl(struct net_device *dev, struct ifreq *ifr,
+static int baycom_ioctl(struct net_device *dev, void __user *data,
 			struct hdlcdrv_ioctl *hi, int cmd);
 
 /* --------------------------------------------------------------------- */
···
 
 /* --------------------------------------------------------------------- */
 
-static int baycom_ioctl(struct net_device *dev, struct ifreq *ifr,
+static int baycom_ioctl(struct net_device *dev, void __user *data,
 			struct hdlcdrv_ioctl *hi, int cmd)
 {
 	struct baycom_state *bc;
···
 		strcpy(hi->data.modename, "ser12");
 		if (bc->opt_dcd <= 0)
 			strcat(hi->data.modename, (!bc->opt_dcd) ? "*" : (bc->opt_dcd == -2) ? "@" : "+");
-		if (copy_to_user(ifr->ifr_data, hi, sizeof(struct hdlcdrv_ioctl)))
+		if (copy_to_user(data, hi, sizeof(struct hdlcdrv_ioctl)))
 			return -EFAULT;
 		return 0;
 
···
 
 	case HDLCDRVCTL_MODELIST:
 		strcpy(hi->data.modename, "ser12");
-		if (copy_to_user(ifr->ifr_data, hi, sizeof(struct hdlcdrv_ioctl)))
+		if (copy_to_user(data, hi, sizeof(struct hdlcdrv_ioctl)))
 			return -EFAULT;
 		return 0;
 
···
 
 	}
 
-	if (copy_from_user(&bi, ifr->ifr_data, sizeof(bi)))
+	if (copy_from_user(&bi, data, sizeof(bi)))
 		return -EFAULT;
 	switch (bi.cmd) {
 	default:
···
 #endif /* BAYCOM_DEBUG */
 
 	}
-	if (copy_to_user(ifr->ifr_data, &bi, sizeof(bi)))
+	if (copy_to_user(data, &bi, sizeof(bi)))
 		return -EFAULT;
 	return 0;
 

drivers/net/hamradio/bpqether.c

···
  *					source ethernet address (broadcast
  *					or multicast: accept all)
  */
-static int bpq_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+static int bpq_siocdevprivate(struct net_device *dev, struct ifreq *ifr,
+			      void __user *data, int cmd)
 {
-	struct bpq_ethaddr __user *ethaddr = ifr->ifr_data;
+	struct bpq_ethaddr __user *ethaddr = data;
 	struct bpqdev *bpq = netdev_priv(dev);
 	struct bpq_req req;
 
···
 
 	switch (cmd) {
 		case SIOCSBPQETHOPT:
-			if (copy_from_user(&req, ifr->ifr_data, sizeof(struct bpq_req)))
+			if (copy_from_user(&req, data, sizeof(struct bpq_req)))
 				return -EFAULT;
 			switch (req.cmd) {
 				case SIOCGBPQETHPARAM:
···
 	.ndo_stop	     = bpq_close,
 	.ndo_start_xmit	     = bpq_xmit,
 	.ndo_set_mac_address = bpq_set_mac_address,
-	.ndo_do_ioctl	     = bpq_ioctl,
+	.ndo_siocdevprivate  = bpq_siocdevprivate,
 };
 
 static void bpq_setup(struct net_device *dev)

drivers/net/hamradio/dmascc.c

···
 
 static int scc_open(struct net_device *dev);
 static int scc_close(struct net_device *dev);
-static int scc_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd);
+static int scc_siocdevprivate(struct net_device *dev, struct ifreq *ifr,
+			      void __user *data, int cmd);
 static int scc_send_packet(struct sk_buff *skb, struct net_device *dev);
 static int scc_set_mac_address(struct net_device *dev, void *sa);
 
···
 	.ndo_open = scc_open,
 	.ndo_stop = scc_close,
 	.ndo_start_xmit = scc_send_packet,
-	.ndo_do_ioctl = scc_ioctl,
+	.ndo_siocdevprivate = scc_siocdevprivate,
 	.ndo_set_mac_address = scc_set_mac_address,
 };
 
···
 }
 
 
-static int scc_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+static int scc_siocdevprivate(struct net_device *dev, struct ifreq *ifr, void __user *data, int cmd)
 {
 	struct scc_priv *priv = dev->ml_priv;
 
 	switch (cmd) {
 	case SIOCGSCCPARAM:
-		if (copy_to_user
-		    (ifr->ifr_data, &priv->param,
-		     sizeof(struct scc_param)))
+		if (copy_to_user(data, &priv->param, sizeof(struct scc_param)))
 			return -EFAULT;
 		return 0;
 	case SIOCSSCCPARAM:
···
 			return -EPERM;
 		if (netif_running(dev))
 			return -EAGAIN;
-		if (copy_from_user
-		    (&priv->param, ifr->ifr_data,
-		     sizeof(struct scc_param)))
+		if (copy_from_user(&priv->param, data,
+				   sizeof(struct scc_param)))
 			return -EFAULT;
 		return 0;
 	default:
-		return -EINVAL;
+		return -EOPNOTSUPP;
 	}
 }
 

drivers/net/hamradio/hdlcdrv.c

···
 
 /* --------------------------------------------------------------------- */
 
-static int hdlcdrv_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+static int hdlcdrv_siocdevprivate(struct net_device *dev, struct ifreq *ifr,
+				  void __user *data, int cmd)
 {
 	struct hdlcdrv_state *s = netdev_priv(dev);
 	struct hdlcdrv_ioctl bi;
 
-	if (cmd != SIOCDEVPRIVATE) {
-		if (s->ops && s->ops->ioctl)
-			return s->ops->ioctl(dev, ifr, &bi, cmd);
+	if (cmd != SIOCDEVPRIVATE)
 		return -ENOIOCTLCMD;
-	}
-	if (copy_from_user(&bi, ifr->ifr_data, sizeof(bi)))
+
+	if (in_compat_syscall()) /* to be implemented */
+		return -ENOIOCTLCMD;
+
+	if (copy_from_user(&bi, data, sizeof(bi)))
 		return -EFAULT;
 
 	switch (bi.cmd) {
 	default:
 		if (s->ops && s->ops->ioctl)
-			return s->ops->ioctl(dev, ifr, &bi, cmd);
+			return s->ops->ioctl(dev, data, &bi, cmd);
 		return -ENOIOCTLCMD;
 
 	case HDLCDRVCTL_GETCHANNELPAR:
···
 		break;
 		
 	}
-	if (copy_to_user(ifr->ifr_data, &bi, sizeof(bi)))
+	if (copy_to_user(data, &bi, sizeof(bi)))
 		return -EFAULT;
 	return 0;
 
···
 	.ndo_open	= hdlcdrv_open,
 	.ndo_stop	= hdlcdrv_close,
 	.ndo_start_xmit = hdlcdrv_send_packet,
-	.ndo_do_ioctl	= hdlcdrv_ioctl,
+	.ndo_siocdevprivate  = hdlcdrv_siocdevprivate,
 	.ndo_set_mac_address = hdlcdrv_set_mac_address,
 };
 

drivers/net/hamradio/scc.c

···
 static void scc_net_rx(struct scc_channel *scc, struct sk_buff *skb);
 static netdev_tx_t scc_net_tx(struct sk_buff *skb,
 			      struct net_device *dev);
-static int scc_net_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd);
+static int scc_net_siocdevprivate(struct net_device *dev, struct ifreq *ifr,
+				  void __user *data, int cmd);
 static int scc_net_set_mac_address(struct net_device *dev, void *addr);
 static struct net_device_stats * scc_net_get_stats(struct net_device *dev);
 
···
 	.ndo_start_xmit	     = scc_net_tx,
 	.ndo_set_mac_address = scc_net_set_mac_address,
 	.ndo_get_stats       = scc_net_get_stats,
-	.ndo_do_ioctl        = scc_net_ioctl,
+	.ndo_siocdevprivate  = scc_net_siocdevprivate,
 };
 
 /* ----> Initialize device <----- */
···
  * SIOCSCCCAL		- send calib. pattern	arg: (struct scc_calibrate *) arg
  */
 
-static int scc_net_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+static int scc_net_siocdevprivate(struct net_device *dev,
+				  struct ifreq *ifr, void __user *arg, int cmd)
 {
 	struct scc_kiss_cmd kiss_cmd;
 	struct scc_mem_config memcfg;
···
 	struct scc_channel *scc = (struct scc_channel *) dev->ml_priv;
 	int chan;
 	unsigned char device_name[IFNAMSIZ];
-	void __user *arg = ifr->ifr_data;
-	
 	
 	if (!Driver_Initialized)
 	{
···
 			int found = 1;
 
 			if (!capable(CAP_SYS_RAWIO)) return -EPERM;
+			if (in_compat_syscall())
+				return -EOPNOTSUPP;
+
 			if (!arg) return -EFAULT;
 
 			if (Nchips >= SCC_MAXCHIPS) 

drivers/net/hamradio/yam.c

···
 
 /* --------------------------------------------------------------------- */
 
-static int yam_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+static int yam_siocdevprivate(struct net_device *dev, struct ifreq *ifr, void __user *data, int cmd)
 {
 	struct yam_port *yp = netdev_priv(dev);
 	struct yamdrv_ioctl_cfg yi;
 	struct yamdrv_ioctl_mcs *ym;
 	int ioctl_cmd;
 
-	if (copy_from_user(&ioctl_cmd, ifr->ifr_data, sizeof(int)))
-		 return -EFAULT;
+	if (copy_from_user(&ioctl_cmd, data, sizeof(int)))
+		return -EFAULT;
 
 	if (yp->magic != YAM_MAGIC)
 		return -EINVAL;
···
 	case SIOCYAMSMCS:
 		if (netif_running(dev))
 			return -EINVAL;		/* Cannot change this parameter when up */
-		ym = memdup_user(ifr->ifr_data,
-				 sizeof(struct yamdrv_ioctl_mcs));
+		ym = memdup_user(data, sizeof(struct yamdrv_ioctl_mcs));
 		if (IS_ERR(ym))
 			return PTR_ERR(ym);
 		if (ym->cmd != SIOCYAMSMCS)
···
 	case SIOCYAMSCFG:
 		if (!capable(CAP_SYS_RAWIO))
 			return -EPERM;
-		if (copy_from_user(&yi, ifr->ifr_data, sizeof(struct yamdrv_ioctl_cfg)))
-			 return -EFAULT;
+		if (copy_from_user(&yi, data, sizeof(struct yamdrv_ioctl_cfg)))
+			return -EFAULT;
 
 		if (yi.cmd != SIOCYAMSCFG)
 			return -EINVAL;
···
 		yi.cfg.txtail = yp->txtail;
 		yi.cfg.persist = yp->pers;
 		yi.cfg.slottime = yp->slot;
-		if (copy_to_user(ifr->ifr_data, &yi, sizeof(struct yamdrv_ioctl_cfg)))
-			 return -EFAULT;
+		if (copy_to_user(data, &yi, sizeof(struct yamdrv_ioctl_cfg)))
+			return -EFAULT;
 		break;
 
 	default:
···
 	.ndo_open	     = yam_open,
 	.ndo_stop	     = yam_close,
 	.ndo_start_xmit      = yam_send_packet,
-	.ndo_do_ioctl 	     = yam_ioctl,
+	.ndo_siocdevprivate  = yam_siocdevprivate,
 	.ndo_set_mac_address = yam_set_mac_address,
 };
 

include/linux/hdlcdrv.h

···
 	 */
 	int (*open)(struct net_device *);
 	int (*close)(struct net_device *);
-	int (*ioctl)(struct net_device *, struct ifreq *, 
+	int (*ioctl)(struct net_device *, void __user *,
 		     struct hdlcdrv_ioctl *, int);
 };