staging: rtl8723au: _issue_deauth(): Use struct ieee80211_mgmt to build frame

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723au/core/rtw_mlme_ext.c

@@ -3840,8 +3840,7 @@ static int _issue_deauth(struct rtw_adapter *padapter, unsigned char *da,
 {
 	struct xmit_frame *pmgntframe;
 	struct pkt_attrib *pattrib;
-	unsigned char *pframe;
-	struct ieee80211_hdr *pwlanhdr;
+	struct ieee80211_mgmt *mgmt;
 	struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
 	struct mlme_ext_priv *pmlmeext = &padapter->mlmeextpriv;
 	struct mlme_ext_info *pmlmeinfo = &pmlmeext->mlmext_info;
@@ -3860,27 +3859,21 @@ static int _issue_deauth(struct rtw_adapter *padapter, unsigned char *da,
 
 	memset(pmgntframe->buf_addr, 0, WLANHDR_OFFSET + TXDESC_OFFSET);
 
-	pframe = (u8 *)(pmgntframe->buf_addr) + TXDESC_OFFSET;
-	pwlanhdr = (struct ieee80211_hdr *)pframe;
+	mgmt = (struct ieee80211_mgmt *)(pmgntframe->buf_addr + TXDESC_OFFSET);
 
-	pwlanhdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
-					      IEEE80211_STYPE_DEAUTH);
+	mgmt->frame_control =
+		cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH);
 
-	ether_addr_copy(pwlanhdr->addr1, da);
-	ether_addr_copy(pwlanhdr->addr2, myid(&padapter->eeprompriv));
-	ether_addr_copy(pwlanhdr->addr3, get_my_bssid23a(&pmlmeinfo->network));
+	ether_addr_copy(mgmt->da, da);
+	ether_addr_copy(mgmt->sa, myid(&padapter->eeprompriv));
+	ether_addr_copy(mgmt->bssid, get_my_bssid23a(&pmlmeinfo->network));
 
-	pwlanhdr->seq_ctrl =
-		cpu_to_le16(IEEE80211_SN_TO_SEQ(pmlmeext->mgnt_seq));
+	mgmt->seq_ctrl = cpu_to_le16(IEEE80211_SN_TO_SEQ(pmlmeext->mgnt_seq));
 	pmlmeext->mgnt_seq++;
 
-	pframe += sizeof(struct ieee80211_hdr_3addr);
-	pattrib->pktlen = sizeof(struct ieee80211_hdr_3addr);
+	pattrib->pktlen = sizeof(struct ieee80211_hdr_3addr) + 2;
 
-	reason = cpu_to_le16(reason);
-	pframe = rtw_set_fixed_ie23a(pframe, WLAN_REASON_PREV_AUTH_NOT_VALID,
-				     (unsigned char *)&reason,
-				     &pattrib->pktlen);
+	mgmt->u.deauth.reason_code = cpu_to_le16(reason);
 
 	pattrib->last_txcmdsz = pattrib->pktlen;