staging: wilc1000: refactor wilc_parse_assoc_resp_info()

Refactor wilc_parse_assoc_resp_info() function by removing the use of
get_asoc_status() API. For parsing assoc response use the struct and
avoided the use of offset macros to extract the ies information.
Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/wilc1000/coreconfigurator.c

@@ -18,14 +18,6 @@ static inline u8 *get_bssid(struct ieee80211_mgmt *mgmt)
 		return mgmt->bssid;
 }
 
-static inline u16 get_asoc_status(u8 *data)
-{
-	u16 asoc_status;
-
-	asoc_status = data[3];
-	return (asoc_status << 8) | data[2];
-}
-
 s32 wilc_parse_network_info(u8 *msg_buffer,
 			    struct network_info **ret_network_info)
 {
@@ -116,12 +108,12 @@ s32 wilc_parse_assoc_resp_info(u8 *buffer, u32 buffer_len,
 {
 	u8 *ies;
 	u16 ies_len;
+	struct assoc_resp *res = (struct assoc_resp *)buffer;
 
-	ret_conn_info->status = get_asoc_status(buffer);
+	ret_conn_info->status = le16_to_cpu(res->status_code);
 	if (ret_conn_info->status == WLAN_STATUS_SUCCESS) {
-		ies = &buffer[CAP_INFO_LEN + STATUS_CODE_LEN + AID_LEN];
-		ies_len = buffer_len - (CAP_INFO_LEN + STATUS_CODE_LEN +
-					AID_LEN);
+		ies = &buffer[sizeof(*res)];
+		ies_len = buffer_len - sizeof(*res);
 
 		ret_conn_info->resp_ies = kmemdup(ies, ies_len, GFP_KERNEL);
 		if (!ret_conn_info->resp_ies)

drivers/staging/wilc1000/coreconfigurator.h

@@ -11,10 +11,6 @@
 
 #define NUM_RSSI                5
 
-#define CAP_INFO_LEN            2
-#define STATUS_CODE_LEN         2
-#define AID_LEN                 2
-
 #define SET_CFG              0
 #define GET_CFG              1
 
@@ -63,6 +59,12 @@ struct disconnect_info {
 	size_t ie_len;
 };
 
+struct assoc_resp {
+	__le16 capab_info;
+	__le16 status_code;
+	__le16 aid;
+} __packed;
+
 s32 wilc_parse_network_info(u8 *msg_buffer,
 			    struct network_info **ret_network_info);
 s32 wilc_parse_assoc_resp_info(u8 *buffer, u32 buffer_len,