diff mbox series

[v2,2/6] hostap: Avoid clashing function prototypes

Message ID 8388b5ed9e729eb9dadec875a7576219e6d61223.1666894751.git.gustavoars@kernel.org (mailing list archive)
State Superseded
Headers show
Series Avoid clashing function prototypes | expand

Commit Message

Gustavo A. R. Silva Oct. 27, 2022, 8:18 p.m. UTC 
When built with Control Flow Integrity, function prototypes between
caller and function declaration must match. These mismatches are visible
at compile time with the new -Wcast-function-type-strict in Clang[1].

Fix a total of 42 warnings like these:

../drivers/net/wireless/intersil/hostap/hostap_ioctl.c:3868:2: warning: cast from 'int (*)(struct net_device *, struct iw_request_info *, char *, char *)' to 'iw_handler' (aka 'int (*)(struct net_device *, struct iw_request_info *, union iwreq_data *, char *)') converts to incompatible function type [-Wcast-function-type-strict]
        (iw_handler) prism2_get_name,                   /* SIOCGIWNAME */
        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~

The hostap Wireless Extension handler callbacks (iw_handler) use a
union for the data argument. Actually use the union and perform explicit
member selection in the function body instead of having a function
prototype mismatch. There are no resulting binary differences
before/after changes.

Link: https://github.com/KSPP/linux/issues/235
Link: https://reviews.llvm.org/D134831 [1]
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
---
Changes in v2:
 - Revert changes in prism2_private_handler[].
	
v1:
 - Link: https://lore.kernel.org/linux-hardening/099d191c65efdf2f5f7b40a87a7eb3aabcae3e04.1666038048.git.gustavoars@kernel.org/

 .../wireless/intersil/hostap/hostap_ioctl.c   | 234 ++++++++++--------
 1 file changed, 128 insertions(+), 106 deletions(-)

Comments

Kees Cook Oct. 29, 2022, 7:26 a.m. UTC | #1 
On Thu, Oct 27, 2022 at 03:18:37PM -0500, Gustavo A. R. Silva wrote:
> When built with Control Flow Integrity, function prototypes between
> caller and function declaration must match. These mismatches are visible
> at compile time with the new -Wcast-function-type-strict in Clang[1].
> 
> Fix a total of 42 warnings like these:
> 
> ../drivers/net/wireless/intersil/hostap/hostap_ioctl.c:3868:2: warning: cast from 'int (*)(struct net_device *, struct iw_request_info *, char *, char *)' to 'iw_handler' (aka 'int (*)(struct net_device *, struct iw_request_info *, union iwreq_data *, char *)') converts to incompatible function type [-Wcast-function-type-strict]
>         (iw_handler) prism2_get_name,                   /* SIOCGIWNAME */
>         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 
> The hostap Wireless Extension handler callbacks (iw_handler) use a
> union for the data argument. Actually use the union and perform explicit
> member selection in the function body instead of having a function
> prototype mismatch. There are no resulting binary differences
> before/after changes.
> 
> Link: https://github.com/KSPP/linux/issues/235
> Link: https://reviews.llvm.org/D134831 [1]
> Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>

Looks like prism2_private_handler contents could be uncast? Otherwise,
yeah, looks good.
Kalle Valo Nov. 1, 2022, 9:36 a.m. UTC | #2 
"Gustavo A. R. Silva" <gustavoars@kernel.org> wrote:

> When built with Control Flow Integrity, function prototypes between
> caller and function declaration must match. These mismatches are visible
> at compile time with the new -Wcast-function-type-strict in Clang[1].
> 
> Fix a total of 42 warnings like these:
> 
> ../drivers/net/wireless/intersil/hostap/hostap_ioctl.c:3868:2: warning: cast from 'int (*)(struct net_device *, struct iw_request_info *, char *, char *)' to 'iw_handler' (aka 'int (*)(struct net_device *, struct iw_request_info *, union iwreq_data *, char *)') converts to incompatible function type [-Wcast-function-type-strict]
>         (iw_handler) prism2_get_name,                   /* SIOCGIWNAME */
>         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 
> The hostap Wireless Extension handler callbacks (iw_handler) use a
> union for the data argument. Actually use the union and perform explicit
> member selection in the function body instead of having a function
> prototype mismatch. There are no resulting binary differences
> before/after changes.
> 
> Link: https://github.com/KSPP/linux/issues/235
> Link: https://reviews.llvm.org/D134831 [1]
> Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>

Please add "wifi: " to all wireless patches, for example this one should be:

wifi: hostap: Avoid clashing function prototypes
diff mbox series

Patch

diff --git a/drivers/net/wireless/intersil/hostap/hostap_ioctl.c b/drivers/net/wireless/intersil/hostap/hostap_ioctl.c
index 4e0a0c881697..01d1ba815c74 100644
--- a/drivers/net/wireless/intersil/hostap/hostap_ioctl.c
+++ b/drivers/net/wireless/intersil/hostap/hostap_ioctl.c
@@ -91,7 +91,7 @@  static int prism2_get_datarates(struct net_device *dev, u8 *rates)
 
 static int prism2_get_name(struct net_device *dev,
 			   struct iw_request_info *info,
-			   char *name, char *extra)
+			   union iwreq_data *wrqu, char *extra)
 {
 	u8 rates[10];
 	int len, i, over2 = 0;
@@ -105,7 +105,7 @@  static int prism2_get_name(struct net_device *dev,
 		}
 	}
 
-	strcpy(name, over2 ? "IEEE 802.11b" : "IEEE 802.11-DS");
+	strcpy(wrqu->name, over2 ? "IEEE 802.11b" : "IEEE 802.11-DS");
 
 	return 0;
 }
@@ -113,8 +113,9 @@  static int prism2_get_name(struct net_device *dev,
 
 static int prism2_ioctl_siwencode(struct net_device *dev,
 				  struct iw_request_info *info,
-				  struct iw_point *erq, char *keybuf)
+				  union iwreq_data *wrqu, char *keybuf)
 {
+	struct iw_point *erq = &wrqu->encoding;
 	struct hostap_interface *iface;
 	local_info_t *local;
 	int i;
@@ -215,8 +216,9 @@  static int prism2_ioctl_siwencode(struct net_device *dev,
 
 static int prism2_ioctl_giwencode(struct net_device *dev,
 				  struct iw_request_info *info,
-				  struct iw_point *erq, char *key)
+				  union iwreq_data *wrqu, char *key)
 {
+	struct iw_point *erq = &wrqu->encoding;
 	struct hostap_interface *iface;
 	local_info_t *local;
 	int i, len;
@@ -321,8 +323,9 @@  static int hostap_set_rate(struct net_device *dev)
 
 static int prism2_ioctl_siwrate(struct net_device *dev,
 				struct iw_request_info *info,
-				struct iw_param *rrq, char *extra)
+				union iwreq_data *wrqu, char *extra)
 {
+	struct iw_param *rrq = &wrqu->bitrate;
 	struct hostap_interface *iface;
 	local_info_t *local;
 
@@ -381,8 +384,9 @@  static int prism2_ioctl_siwrate(struct net_device *dev,
 
 static int prism2_ioctl_giwrate(struct net_device *dev,
 				struct iw_request_info *info,
-				struct iw_param *rrq, char *extra)
+				union iwreq_data *wrqu, char *extra)
 {
+	struct iw_param *rrq = &wrqu->bitrate;
 	u16 val;
 	struct hostap_interface *iface;
 	local_info_t *local;
@@ -440,8 +444,9 @@  static int prism2_ioctl_giwrate(struct net_device *dev,
 
 static int prism2_ioctl_siwsens(struct net_device *dev,
 				struct iw_request_info *info,
-				struct iw_param *sens, char *extra)
+				union iwreq_data *wrqu, char *extra)
 {
+	struct iw_param *sens = &wrqu->sens;
 	struct hostap_interface *iface;
 	local_info_t *local;
 
@@ -461,8 +466,9 @@  static int prism2_ioctl_siwsens(struct net_device *dev,
 
 static int prism2_ioctl_giwsens(struct net_device *dev,
 				struct iw_request_info *info,
-				struct iw_param *sens, char *extra)
+				union iwreq_data *wrqu, char *extra)
 {
+	struct iw_param *sens = &wrqu->sens;
 	struct hostap_interface *iface;
 	local_info_t *local;
 	__le16 val;
@@ -485,8 +491,9 @@  static int prism2_ioctl_giwsens(struct net_device *dev,
 /* Deprecated in new wireless extension API */
 static int prism2_ioctl_giwaplist(struct net_device *dev,
 				  struct iw_request_info *info,
-				  struct iw_point *data, char *extra)
+				  union iwreq_data *wrqu, char *extra)
 {
+	struct iw_point *data = &wrqu->data;
 	struct hostap_interface *iface;
 	local_info_t *local;
 	struct sockaddr *addr;
@@ -526,8 +533,9 @@  static int prism2_ioctl_giwaplist(struct net_device *dev,
 
 static int prism2_ioctl_siwrts(struct net_device *dev,
 			       struct iw_request_info *info,
-			       struct iw_param *rts, char *extra)
+			       union iwreq_data *wrqu, char *extra)
 {
+	struct iw_param *rts = &wrqu->rts;
 	struct hostap_interface *iface;
 	local_info_t *local;
 	__le16 val;
@@ -553,8 +561,9 @@  static int prism2_ioctl_siwrts(struct net_device *dev,
 
 static int prism2_ioctl_giwrts(struct net_device *dev,
 			       struct iw_request_info *info,
-			       struct iw_param *rts, char *extra)
+			       union iwreq_data *wrqu, char *extra)
 {
+	struct iw_param *rts = &wrqu->rts;
 	struct hostap_interface *iface;
 	local_info_t *local;
 	__le16 val;
@@ -576,8 +585,9 @@  static int prism2_ioctl_giwrts(struct net_device *dev,
 
 static int prism2_ioctl_siwfrag(struct net_device *dev,
 				struct iw_request_info *info,
-				struct iw_param *rts, char *extra)
+				union iwreq_data *wrqu, char *extra)
 {
+	struct iw_param *rts = &wrqu->rts;
 	struct hostap_interface *iface;
 	local_info_t *local;
 	__le16 val;
@@ -603,8 +613,9 @@  static int prism2_ioctl_siwfrag(struct net_device *dev,
 
 static int prism2_ioctl_giwfrag(struct net_device *dev,
 				struct iw_request_info *info,
-				struct iw_param *rts, char *extra)
+				union iwreq_data *wrqu, char *extra)
 {
+	struct iw_param *rts = &wrqu->rts;
 	struct hostap_interface *iface;
 	local_info_t *local;
 	__le16 val;
@@ -669,8 +680,9 @@  static int hostap_join_ap(struct net_device *dev)
 
 static int prism2_ioctl_siwap(struct net_device *dev,
 			      struct iw_request_info *info,
-			      struct sockaddr *ap_addr, char *extra)
+			      union iwreq_data *wrqu, char *extra)
 {
+	struct sockaddr *ap_addr = &wrqu->ap_addr;
 #ifdef PRISM2_NO_STATION_MODES
 	return -EOPNOTSUPP;
 #else /* PRISM2_NO_STATION_MODES */
@@ -709,8 +721,9 @@  static int prism2_ioctl_siwap(struct net_device *dev,
 
 static int prism2_ioctl_giwap(struct net_device *dev,
 			      struct iw_request_info *info,
-			      struct sockaddr *ap_addr, char *extra)
+			      union iwreq_data *wrqu, char *extra)
 {
+	struct sockaddr *ap_addr = &wrqu->ap_addr;
 	struct hostap_interface *iface;
 	local_info_t *local;
 
@@ -745,8 +758,9 @@  static int prism2_ioctl_giwap(struct net_device *dev,
 
 static int prism2_ioctl_siwnickn(struct net_device *dev,
 				 struct iw_request_info *info,
-				 struct iw_point *data, char *nickname)
+				 union iwreq_data *wrqu, char *nickname)
 {
+	struct iw_point *data = &wrqu->data;
 	struct hostap_interface *iface;
 	local_info_t *local;
 
@@ -766,8 +780,9 @@  static int prism2_ioctl_siwnickn(struct net_device *dev,
 
 static int prism2_ioctl_giwnickn(struct net_device *dev,
 				 struct iw_request_info *info,
-				 struct iw_point *data, char *nickname)
+				 union iwreq_data *wrqu, char *nickname)
 {
+	struct iw_point *data = &wrqu->data;
 	struct hostap_interface *iface;
 	local_info_t *local;
 	int len;
@@ -793,8 +808,9 @@  static int prism2_ioctl_giwnickn(struct net_device *dev,
 
 static int prism2_ioctl_siwfreq(struct net_device *dev,
 				struct iw_request_info *info,
-				struct iw_freq *freq, char *extra)
+				union iwreq_data *wrqu, char *extra)
 {
+	struct iw_freq *freq = &wrqu->freq;
 	struct hostap_interface *iface;
 	local_info_t *local;
 
@@ -830,8 +846,9 @@  static int prism2_ioctl_siwfreq(struct net_device *dev,
 
 static int prism2_ioctl_giwfreq(struct net_device *dev,
 				struct iw_request_info *info,
-				struct iw_freq *freq, char *extra)
+				union iwreq_data *wrqu, char *extra)
 {
+	struct iw_freq *freq = &wrqu->freq;
 	struct hostap_interface *iface;
 	local_info_t *local;
 	u16 val;
@@ -874,8 +891,9 @@  static void hostap_monitor_set_type(local_info_t *local)
 
 static int prism2_ioctl_siwessid(struct net_device *dev,
 				 struct iw_request_info *info,
-				 struct iw_point *data, char *ssid)
+				 union iwreq_data *wrqu, char *ssid)
 {
+	struct iw_point *data = &wrqu->data;
 	struct hostap_interface *iface;
 	local_info_t *local;
 
@@ -910,8 +928,9 @@  static int prism2_ioctl_siwessid(struct net_device *dev,
 
 static int prism2_ioctl_giwessid(struct net_device *dev,
 				 struct iw_request_info *info,
-				 struct iw_point *data, char *essid)
+				 union iwreq_data *wrqu, char *essid)
 {
+	struct iw_point *data = &wrqu->data;
 	struct hostap_interface *iface;
 	local_info_t *local;
 	u16 val;
@@ -946,8 +965,9 @@  static int prism2_ioctl_giwessid(struct net_device *dev,
 
 static int prism2_ioctl_giwrange(struct net_device *dev,
 				 struct iw_request_info *info,
-				 struct iw_point *data, char *extra)
+				 union iwreq_data *wrqu, char *extra)
 {
+	struct iw_point *data = &wrqu->data;
 	struct hostap_interface *iface;
 	local_info_t *local;
 	struct iw_range *range = (struct iw_range *) extra;
@@ -1121,8 +1141,9 @@  static int hostap_monitor_mode_disable(local_info_t *local)
 
 static int prism2_ioctl_siwmode(struct net_device *dev,
 				struct iw_request_info *info,
-				__u32 *mode, char *extra)
+				union iwreq_data *wrqu, char *extra)
 {
+	__u32 *mode = &wrqu->mode;
 	struct hostap_interface *iface;
 	local_info_t *local;
 	int double_reset = 0;
@@ -1197,8 +1218,9 @@  static int prism2_ioctl_siwmode(struct net_device *dev,
 
 static int prism2_ioctl_giwmode(struct net_device *dev,
 				struct iw_request_info *info,
-				__u32 *mode, char *extra)
+				union iwreq_data *wrqu, char *extra)
 {
+	__u32 *mode = &wrqu->mode;
 	struct hostap_interface *iface;
 	local_info_t *local;
 
@@ -1222,8 +1244,9 @@  static int prism2_ioctl_giwmode(struct net_device *dev,
 
 static int prism2_ioctl_siwpower(struct net_device *dev,
 				 struct iw_request_info *info,
-				 struct iw_param *wrq, char *extra)
+				 union iwreq_data *wrqu, char *extra)
 {
+	struct iw_param *wrq = &wrqu->power;
 #ifdef PRISM2_NO_STATION_MODES
 	return -EOPNOTSUPP;
 #else /* PRISM2_NO_STATION_MODES */
@@ -1281,8 +1304,9 @@  static int prism2_ioctl_siwpower(struct net_device *dev,
 
 static int prism2_ioctl_giwpower(struct net_device *dev,
 				 struct iw_request_info *info,
-				 struct iw_param *rrq, char *extra)
+				 union iwreq_data *wrqu, char *extra)
 {
+	struct iw_param *rrq = &wrqu->power;
 #ifdef PRISM2_NO_STATION_MODES
 	return -EOPNOTSUPP;
 #else /* PRISM2_NO_STATION_MODES */
@@ -1339,8 +1363,9 @@  static int prism2_ioctl_giwpower(struct net_device *dev,
 
 static int prism2_ioctl_siwretry(struct net_device *dev,
 				 struct iw_request_info *info,
-				 struct iw_param *rrq, char *extra)
+				 union iwreq_data *wrqu, char *extra)
 {
+	struct iw_param *rrq = &wrqu->retry;
 	struct hostap_interface *iface;
 	local_info_t *local;
 
@@ -1400,8 +1425,9 @@  static int prism2_ioctl_siwretry(struct net_device *dev,
 
 static int prism2_ioctl_giwretry(struct net_device *dev,
 				 struct iw_request_info *info,
-				 struct iw_param *rrq, char *extra)
+				 union iwreq_data *wrqu, char *extra)
 {
+	struct iw_param *rrq = &wrqu->retry;
 	struct hostap_interface *iface;
 	local_info_t *local;
 	__le16 shortretry, longretry, lifetime, altretry;
@@ -1494,8 +1520,9 @@  static u16 prism2_txpower_dBm_to_hfa386x(int val)
 
 static int prism2_ioctl_siwtxpow(struct net_device *dev,
 				 struct iw_request_info *info,
-				 struct iw_param *rrq, char *extra)
+				 union iwreq_data *wrqu, char *extra)
 {
+	struct iw_param *rrq = &wrqu->txpower;
 	struct hostap_interface *iface;
 	local_info_t *local;
 #ifdef RAW_TXPOWER_SETTING
@@ -1575,9 +1602,10 @@  static int prism2_ioctl_siwtxpow(struct net_device *dev,
 
 static int prism2_ioctl_giwtxpow(struct net_device *dev,
 				 struct iw_request_info *info,
-				 struct iw_param *rrq, char *extra)
+				 union iwreq_data *wrqu, char *extra)
 {
 #ifdef RAW_TXPOWER_SETTING
+	struct iw_param *rrq = &wrqu->txpower;
 	struct hostap_interface *iface;
 	local_info_t *local;
 	u16 resp0;
@@ -1710,8 +1738,9 @@  static inline int prism2_request_scan(struct net_device *dev)
 
 static int prism2_ioctl_siwscan(struct net_device *dev,
 				struct iw_request_info *info,
-				struct iw_point *data, char *extra)
+				union iwreq_data *wrqu, char *extra)
 {
+	struct iw_point *data = &wrqu->data;
 	struct hostap_interface *iface;
 	local_info_t *local;
 	int ret;
@@ -2057,8 +2086,9 @@  static inline int prism2_ioctl_giwscan_sta(struct net_device *dev,
 
 static int prism2_ioctl_giwscan(struct net_device *dev,
 				struct iw_request_info *info,
-				struct iw_point *data, char *extra)
+				union iwreq_data *wrqu, char *extra)
 {
+	struct iw_point *data = &wrqu->data;
 	struct hostap_interface *iface;
 	local_info_t *local;
 	int res;
@@ -2303,7 +2333,7 @@  static int prism2_ioctl_priv_inquire(struct net_device *dev, int *i)
 
 static int prism2_ioctl_priv_prism2_param(struct net_device *dev,
 					  struct iw_request_info *info,
-					  void *wrqu, char *extra)
+					  union iwreq_data *uwrq, char *extra)
 {
 	struct hostap_interface *iface;
 	local_info_t *local;
@@ -2654,7 +2684,7 @@  static int prism2_ioctl_priv_prism2_param(struct net_device *dev,
 
 static int prism2_ioctl_priv_get_prism2_param(struct net_device *dev,
 					      struct iw_request_info *info,
-					      void *wrqu, char *extra)
+					      union iwreq_data *wrqu, char *extra)
 {
 	struct hostap_interface *iface;
 	local_info_t *local;
@@ -2841,7 +2871,7 @@  static int prism2_ioctl_priv_get_prism2_param(struct net_device *dev,
 
 static int prism2_ioctl_priv_readmif(struct net_device *dev,
 				     struct iw_request_info *info,
-				     void *wrqu, char *extra)
+				     union iwreq_data *wrqu, char *extra)
 {
 	struct hostap_interface *iface;
 	local_info_t *local;
@@ -2862,7 +2892,7 @@  static int prism2_ioctl_priv_readmif(struct net_device *dev,
 
 static int prism2_ioctl_priv_writemif(struct net_device *dev,
 				      struct iw_request_info *info,
-				      void *wrqu, char *extra)
+				      union iwreq_data *wrqu, char *extra)
 {
 	struct hostap_interface *iface;
 	local_info_t *local;
@@ -2885,7 +2915,7 @@  static int prism2_ioctl_priv_monitor(struct net_device *dev, int *i)
 	struct hostap_interface *iface;
 	local_info_t *local;
 	int ret = 0;
-	u32 mode;
+	union iwreq_data wrqu;
 
 	iface = netdev_priv(dev);
 	local = iface->local;
@@ -2899,8 +2929,8 @@  static int prism2_ioctl_priv_monitor(struct net_device *dev, int *i)
 	if (*i == 0) {
 		/* Disable monitor mode - old mode was not saved, so go to
 		 * Master mode */
-		mode = IW_MODE_MASTER;
-		ret = prism2_ioctl_siwmode(dev, NULL, &mode, NULL);
+		wrqu.mode = IW_MODE_MASTER;
+		ret = prism2_ioctl_siwmode(dev, NULL, &wrqu, NULL);
 	} else if (*i == 1) {
 		/* netlink socket mode is not supported anymore since it did
 		 * not separate different devices from each other and was not
@@ -2916,8 +2946,8 @@  static int prism2_ioctl_priv_monitor(struct net_device *dev, int *i)
 			local->monitor_type = PRISM2_MONITOR_PRISM;
 			break;
 		}
-		mode = IW_MODE_MONITOR;
-		ret = prism2_ioctl_siwmode(dev, NULL, &mode, NULL);
+		wrqu.mode = IW_MODE_MONITOR;
+		ret = prism2_ioctl_siwmode(dev, NULL, &wrqu, NULL);
 		hostap_monitor_mode_enable(local);
 	} else
 		ret = -EINVAL;
@@ -3079,8 +3109,9 @@  static int prism2_set_genericelement(struct net_device *dev, u8 *elem,
 
 static int prism2_ioctl_siwauth(struct net_device *dev,
 				struct iw_request_info *info,
-				struct iw_param *data, char *extra)
+				union iwreq_data *wrqu, char *extra)
 {
+	struct iw_param *data = &wrqu->param;
 	struct hostap_interface *iface = netdev_priv(dev);
 	local_info_t *local = iface->local;
 
@@ -3145,8 +3176,9 @@  static int prism2_ioctl_siwauth(struct net_device *dev,
 
 static int prism2_ioctl_giwauth(struct net_device *dev,
 				struct iw_request_info *info,
-				struct iw_param *data, char *extra)
+				union iwreq_data *wrqu, char *extra)
 {
+	struct iw_param *data = &wrqu->param;
 	struct hostap_interface *iface = netdev_priv(dev);
 	local_info_t *local = iface->local;
 
@@ -3184,8 +3216,9 @@  static int prism2_ioctl_giwauth(struct net_device *dev,
 
 static int prism2_ioctl_siwencodeext(struct net_device *dev,
 				     struct iw_request_info *info,
-				     struct iw_point *erq, char *extra)
+				     union iwreq_data *wrqu, char *extra)
 {
+	struct iw_point *erq = &wrqu->encoding;
 	struct hostap_interface *iface = netdev_priv(dev);
 	local_info_t *local = iface->local;
 	struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
@@ -3358,8 +3391,9 @@  static int prism2_ioctl_siwencodeext(struct net_device *dev,
 
 static int prism2_ioctl_giwencodeext(struct net_device *dev,
 				     struct iw_request_info *info,
-				     struct iw_point *erq, char *extra)
+				     union iwreq_data *wrqu, char *extra)
 {
+	struct iw_point *erq = &wrqu->encoding;
 	struct hostap_interface *iface = netdev_priv(dev);
 	local_info_t *local = iface->local;
 	struct lib80211_crypt_data **crypt;
@@ -3666,16 +3700,18 @@  static int prism2_ioctl_set_assoc_ap_addr(local_info_t *local,
 
 static int prism2_ioctl_siwgenie(struct net_device *dev,
 				 struct iw_request_info *info,
-				 struct iw_point *data, char *extra)
+				 union iwreq_data *wrqu, char *extra)
 {
+	struct iw_point *data = &wrqu->data;
 	return prism2_set_genericelement(dev, extra, data->length);
 }
 
 
 static int prism2_ioctl_giwgenie(struct net_device *dev,
 				 struct iw_request_info *info,
-				 struct iw_point *data, char *extra)
+				 union iwreq_data *wrqu, char *extra)
 {
+	struct iw_point *data = &wrqu->data;
 	struct hostap_interface *iface = netdev_priv(dev);
 	local_info_t *local = iface->local;
 	int len = local->generic_elem_len - 2;
@@ -3713,7 +3749,7 @@  static int prism2_ioctl_set_generic_element(local_info_t *local,
 
 static int prism2_ioctl_siwmlme(struct net_device *dev,
 				struct iw_request_info *info,
-				struct iw_point *data, char *extra)
+				union iwreq_data *wrqu, char *extra)
 {
 	struct hostap_interface *iface = netdev_priv(dev);
 	local_info_t *local = iface->local;
@@ -3864,62 +3900,48 @@  const struct ethtool_ops prism2_ethtool_ops = {
 
 static const iw_handler prism2_handler[] =
 {
-	(iw_handler) NULL,				/* SIOCSIWCOMMIT */
-	(iw_handler) prism2_get_name,			/* SIOCGIWNAME */
-	(iw_handler) NULL,				/* SIOCSIWNWID */
-	(iw_handler) NULL,				/* SIOCGIWNWID */
-	(iw_handler) prism2_ioctl_siwfreq,		/* SIOCSIWFREQ */
-	(iw_handler) prism2_ioctl_giwfreq,		/* SIOCGIWFREQ */
-	(iw_handler) prism2_ioctl_siwmode,		/* SIOCSIWMODE */
-	(iw_handler) prism2_ioctl_giwmode,		/* SIOCGIWMODE */
-	(iw_handler) prism2_ioctl_siwsens,		/* SIOCSIWSENS */
-	(iw_handler) prism2_ioctl_giwsens,		/* SIOCGIWSENS */
-	(iw_handler) NULL /* not used */,		/* SIOCSIWRANGE */
-	(iw_handler) prism2_ioctl_giwrange,		/* SIOCGIWRANGE */
-	(iw_handler) NULL /* not used */,		/* SIOCSIWPRIV */
-	(iw_handler) NULL /* kernel code */,		/* SIOCGIWPRIV */
-	(iw_handler) NULL /* not used */,		/* SIOCSIWSTATS */
-	(iw_handler) NULL /* kernel code */,		/* SIOCGIWSTATS */
-	iw_handler_set_spy,				/* SIOCSIWSPY */
-	iw_handler_get_spy,				/* SIOCGIWSPY */
-	iw_handler_set_thrspy,				/* SIOCSIWTHRSPY */
-	iw_handler_get_thrspy,				/* SIOCGIWTHRSPY */
-	(iw_handler) prism2_ioctl_siwap,		/* SIOCSIWAP */
-	(iw_handler) prism2_ioctl_giwap,		/* SIOCGIWAP */
-	(iw_handler) prism2_ioctl_siwmlme,		/* SIOCSIWMLME */
-	(iw_handler) prism2_ioctl_giwaplist,		/* SIOCGIWAPLIST */
-	(iw_handler) prism2_ioctl_siwscan,		/* SIOCSIWSCAN */
-	(iw_handler) prism2_ioctl_giwscan,		/* SIOCGIWSCAN */
-	(iw_handler) prism2_ioctl_siwessid,		/* SIOCSIWESSID */
-	(iw_handler) prism2_ioctl_giwessid,		/* SIOCGIWESSID */
-	(iw_handler) prism2_ioctl_siwnickn,		/* SIOCSIWNICKN */
-	(iw_handler) prism2_ioctl_giwnickn,		/* SIOCGIWNICKN */
-	(iw_handler) NULL,				/* -- hole -- */
-	(iw_handler) NULL,				/* -- hole -- */
-	(iw_handler) prism2_ioctl_siwrate,		/* SIOCSIWRATE */
-	(iw_handler) prism2_ioctl_giwrate,		/* SIOCGIWRATE */
-	(iw_handler) prism2_ioctl_siwrts,		/* SIOCSIWRTS */
-	(iw_handler) prism2_ioctl_giwrts,		/* SIOCGIWRTS */
-	(iw_handler) prism2_ioctl_siwfrag,		/* SIOCSIWFRAG */
-	(iw_handler) prism2_ioctl_giwfrag,		/* SIOCGIWFRAG */
-	(iw_handler) prism2_ioctl_siwtxpow,		/* SIOCSIWTXPOW */
-	(iw_handler) prism2_ioctl_giwtxpow,		/* SIOCGIWTXPOW */
-	(iw_handler) prism2_ioctl_siwretry,		/* SIOCSIWRETRY */
-	(iw_handler) prism2_ioctl_giwretry,		/* SIOCGIWRETRY */
-	(iw_handler) prism2_ioctl_siwencode,		/* SIOCSIWENCODE */
-	(iw_handler) prism2_ioctl_giwencode,		/* SIOCGIWENCODE */
-	(iw_handler) prism2_ioctl_siwpower,		/* SIOCSIWPOWER */
-	(iw_handler) prism2_ioctl_giwpower,		/* SIOCGIWPOWER */
-	(iw_handler) NULL,				/* -- hole -- */
-	(iw_handler) NULL,				/* -- hole -- */
-	(iw_handler) prism2_ioctl_siwgenie,		/* SIOCSIWGENIE */
-	(iw_handler) prism2_ioctl_giwgenie,		/* SIOCGIWGENIE */
-	(iw_handler) prism2_ioctl_siwauth,		/* SIOCSIWAUTH */
-	(iw_handler) prism2_ioctl_giwauth,		/* SIOCGIWAUTH */
-	(iw_handler) prism2_ioctl_siwencodeext,		/* SIOCSIWENCODEEXT */
-	(iw_handler) prism2_ioctl_giwencodeext,		/* SIOCGIWENCODEEXT */
-	(iw_handler) NULL,				/* SIOCSIWPMKSA */
-	(iw_handler) NULL,				/* -- hole -- */
+	IW_HANDLER(SIOCGIWNAME,		prism2_get_name),
+	IW_HANDLER(SIOCSIWFREQ,		prism2_ioctl_siwfreq),
+	IW_HANDLER(SIOCGIWFREQ,		prism2_ioctl_giwfreq),
+	IW_HANDLER(SIOCSIWMODE,		prism2_ioctl_siwmode),
+	IW_HANDLER(SIOCGIWMODE,		prism2_ioctl_giwmode),
+	IW_HANDLER(SIOCSIWSENS,		prism2_ioctl_siwsens),
+	IW_HANDLER(SIOCGIWSENS,		prism2_ioctl_giwsens),
+	IW_HANDLER(SIOCGIWRANGE,	prism2_ioctl_giwrange),
+	IW_HANDLER(SIOCSIWSPY,		iw_handler_set_spy),
+	IW_HANDLER(SIOCGIWSPY,		iw_handler_get_spy),
+	IW_HANDLER(SIOCSIWTHRSPY,	iw_handler_set_thrspy),
+	IW_HANDLER(SIOCGIWTHRSPY,	iw_handler_get_thrspy),
+	IW_HANDLER(SIOCSIWAP,		prism2_ioctl_siwap),
+	IW_HANDLER(SIOCGIWAP,		prism2_ioctl_giwap),
+	IW_HANDLER(SIOCSIWMLME,		prism2_ioctl_siwmlme),
+	IW_HANDLER(SIOCGIWAPLIST,       prism2_ioctl_giwaplist),
+	IW_HANDLER(SIOCSIWSCAN,		prism2_ioctl_siwscan),
+	IW_HANDLER(SIOCGIWSCAN,		prism2_ioctl_giwscan),
+	IW_HANDLER(SIOCSIWESSID,        prism2_ioctl_siwessid),
+	IW_HANDLER(SIOCGIWESSID,        prism2_ioctl_giwessid),
+	IW_HANDLER(SIOCSIWNICKN,        prism2_ioctl_siwnickn),
+	IW_HANDLER(SIOCGIWNICKN,        prism2_ioctl_giwnickn),
+	IW_HANDLER(SIOCSIWRATE,		prism2_ioctl_siwrate),
+	IW_HANDLER(SIOCGIWRATE,		prism2_ioctl_giwrate),
+	IW_HANDLER(SIOCSIWRTS,		prism2_ioctl_siwrts),
+	IW_HANDLER(SIOCGIWRTS,		prism2_ioctl_giwrts),
+	IW_HANDLER(SIOCSIWFRAG,		prism2_ioctl_siwfrag),
+	IW_HANDLER(SIOCGIWFRAG,		prism2_ioctl_giwfrag),
+	IW_HANDLER(SIOCSIWTXPOW,        prism2_ioctl_siwtxpow),
+	IW_HANDLER(SIOCGIWTXPOW,        prism2_ioctl_giwtxpow),
+	IW_HANDLER(SIOCSIWRETRY,        prism2_ioctl_siwretry),
+	IW_HANDLER(SIOCGIWRETRY,        prism2_ioctl_giwretry),
+	IW_HANDLER(SIOCSIWENCODE,       prism2_ioctl_siwencode),
+	IW_HANDLER(SIOCGIWENCODE,       prism2_ioctl_giwencode),
+	IW_HANDLER(SIOCSIWPOWER,        prism2_ioctl_siwpower),
+	IW_HANDLER(SIOCGIWPOWER,        prism2_ioctl_giwpower),
+	IW_HANDLER(SIOCSIWGENIE,        prism2_ioctl_siwgenie),
+	IW_HANDLER(SIOCGIWGENIE,        prism2_ioctl_giwgenie),
+	IW_HANDLER(SIOCSIWAUTH,		prism2_ioctl_siwauth),
+	IW_HANDLER(SIOCGIWAUTH,		prism2_ioctl_giwauth),
+	IW_HANDLER(SIOCSIWENCODEEXT,    prism2_ioctl_siwencodeext),
+	IW_HANDLER(SIOCGIWENCODEEXT,    prism2_ioctl_giwencodeext),
 };
 
 static const iw_handler prism2_private_handler[] =
@@ -3935,8 +3957,8 @@  const struct iw_handler_def hostap_iw_handler_def =
 	.num_standard	= ARRAY_SIZE(prism2_handler),
 	.num_private	= ARRAY_SIZE(prism2_private_handler),
 	.num_private_args = ARRAY_SIZE(prism2_priv),
-	.standard	= (iw_handler *) prism2_handler,
-	.private	= (iw_handler *) prism2_private_handler,
+	.standard	= prism2_handler,
+	.private	= prism2_private_handler,
 	.private_args	= (struct iw_priv_args *) prism2_priv,
 	.get_wireless_stats = hostap_get_wireless_stats,
 };