staging: rtl8723au: Make rtw_cfg80211_add_wep() take a struct rtw_wep_key

This allows the removal of the ugly struct ndis_8802_11_wep and simplify
rtw_cfg80211_add_wep(). In addition remove unused element ndiswep from
struct security_priv.
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723au/include/rtw_security.h

@@ -142,7 +142,6 @@ struct security_priv {
 	u32 ndisauthtype;	/*  enum ndis_802_11_auth_mode */
 	u32 ndisencryptstatus;	/*  NDIS_802_11_ENCRYPTION_STATUS */
 	struct wlan_bssid_ex sec_bss;  /* for joinbss (h2c buffer) usage */
-	struct ndis_802_11_wep ndiswep;
 	u8 assoc_info[600];
 	u8 szofcapability[256]; /* for wpa2 usage */
 	u8 oidassociation[512]; /* for wpa/wpa2 usage */

drivers/staging/rtl8723au/include/wlan_bssdef.h

@@ -99,13 +99,6 @@ struct ndis_802_11_key {
 	u8 KeyMaterial[32]; /*  variable length depending on above field */
 };
 
-struct ndis_802_11_wep {
-	u32     Length;        /*  Length of this structure */
-	u32     KeyIndex;      /*  0 is the per-client key, 1-N are global */
-	u32     KeyLength;     /*  length of key in bytes */
-	u8     KeyMaterial[16];/*  variable length depending on above field */
-};
-
 enum NDIS_802_11_STATUS_TYPE {
 	Ndis802_11StatusType_Authentication,
 	Ndis802_11StatusType_MediaStreamMode,

drivers/staging/rtl8723au/os_dep/ioctl_cfg80211.c

@@ -1936,22 +1936,19 @@ static int rtw_cfg80211_set_wpa_ie(struct rtw_adapter *padapter, const u8 *pie,
 }
 
 static int rtw_cfg80211_add_wep(struct rtw_adapter *padapter,
-				struct ndis_802_11_wep *wep)
+				struct rtw_wep_key *wep, u8 keyid)
 {
-	int keyid, res;
+	int res;
 	struct security_priv *psecuritypriv = &padapter->securitypriv;
 
-	keyid = wep->KeyIndex & 0x3fffffff;
-
-	if (keyid >= 4) {
+	if (keyid >= NUM_WEP_KEYS) {
 		RT_TRACE(_module_rtl871x_ioctl_set_c_, _drv_err_,
 			 ("%s:keyid>4 =>fail\n", __func__));
 		res = _FAIL;
 		goto exit;
 	}
 
-	switch (wep->KeyLength)
-	{
+	switch (wep->keylen) {
 	case 5:
 		psecuritypriv->dot11PrivacyAlgrthm = WLAN_CIPHER_SUITE_WEP40;
 		RT_TRACE(_module_rtl871x_ioctl_set_c_, _drv_info_,
@@ -1971,14 +1968,10 @@ static int rtw_cfg80211_add_wep(struct rtw_adapter *padapter,
 	}
 
 	RT_TRACE(_module_rtl871x_ioctl_set_c_, _drv_info_,
-		 ("%s:before memcpy, wep->KeyLength = 0x%x "
-		  "wep->KeyIndex = 0x%x  keyid =%x\n", __func__,
-		  wep->KeyLength, wep->KeyIndex, keyid));
-
-	memcpy(&psecuritypriv->wep_key[keyid].key, &wep->KeyMaterial,
-	       wep->KeyLength);
+		 ("%s:before memcpy, wep->KeyLength = 0x%x keyid =%x\n",
+		  __func__, wep->keylen, keyid));
 
-	psecuritypriv->wep_key[keyid].keylen = wep->KeyLength;
+	memcpy(&psecuritypriv->wep_key[keyid], wep, sizeof(struct rtw_wep_key));
 
 	psecuritypriv->dot11PrivacyKeyIndex = keyid;
 
@@ -2176,57 +2169,43 @@ static int cfg80211_rtw_connect(struct wiphy *wiphy, struct net_device *ndev,
 	if ((psecuritypriv->dot11AuthAlgrthm == dot11AuthAlgrthm_Shared ||
 	     psecuritypriv->dot11AuthAlgrthm == dot11AuthAlgrthm_Auto) &&
 	    sme->key) {
-		u32 wep_key_idx, wep_key_len, wep_total_len;
-		struct ndis_802_11_wep *pwep = NULL;
+		struct rtw_wep_key wep_key;
+		u8 wep_key_idx, wep_key_len;
 		DBG_8723A("%s(): Shared/Auto WEP\n", __func__);
 
 		wep_key_idx = sme->key_idx;
 		wep_key_len = sme->key_len;
 
-		if (sme->key_idx > WEP_KEYS) {
+		if (wep_key_idx > WEP_KEYS || !wep_key_len ||
+		    wep_key_len > WLAN_KEY_LEN_WEP104) {
 			ret = -EINVAL;
 			goto exit;
 		}
 
-		if (wep_key_len > 0) {
-			wep_key_len = wep_key_len <= 5 ? 5 : 13;
-			wep_total_len =
-				wep_key_len +
-				offsetof(struct ndis_802_11_wep, KeyMaterial);
-			pwep = (struct ndis_802_11_wep *)kmalloc(wep_total_len,
-								 GFP_KERNEL);
-			if (pwep == NULL) {
-				DBG_8723A(" wpa_set_encryption: pwep "
-					  "allocate fail !!!\n");
-				ret = -ENOMEM;
-				goto exit;
-			}
+		wep_key_len = wep_key_len <= 5 ? 5 : 13;
 
-			memset(pwep, 0, wep_total_len);
+		memset(&wep_key, 0, sizeof(struct rtw_wep_key));
 
-			pwep->KeyLength = wep_key_len;
-			pwep->Length = wep_total_len;
+		wep_key.keylen = wep_key_len;
 
-			if (wep_key_len == 13) {
-				padapter->securitypriv.dot11PrivacyAlgrthm =
-				    WLAN_CIPHER_SUITE_WEP104;
-				padapter->securitypriv.dot118021XGrpPrivacy =
-				    WLAN_CIPHER_SUITE_WEP104;
-			}
+		if (wep_key_len == 13) {
+			padapter->securitypriv.dot11PrivacyAlgrthm =
+				WLAN_CIPHER_SUITE_WEP104;
+			padapter->securitypriv.dot118021XGrpPrivacy =
+				WLAN_CIPHER_SUITE_WEP104;
 		} else {
-			ret = -EINVAL;
-			goto exit;
+			padapter->securitypriv.dot11PrivacyAlgrthm =
+				WLAN_CIPHER_SUITE_WEP40;
+			padapter->securitypriv.dot118021XGrpPrivacy =
+				WLAN_CIPHER_SUITE_WEP40;
 		}
 
-		pwep->KeyIndex = wep_key_idx;
-
-		memcpy(pwep->KeyMaterial, (void *)sme->key, pwep->KeyLength);
+		memcpy(wep_key.key, (void *)sme->key, wep_key.keylen);
 
-		if (rtw_cfg80211_add_wep(padapter, pwep) != _SUCCESS)
+		if (rtw_cfg80211_add_wep(padapter, &wep_key, wep_key_idx) !=
+		    _SUCCESS)
 			ret = -EOPNOTSUPP;
 
-		kfree(pwep);
-
 		if (ret < 0)
 			goto exit;
 	}