staging: r8188eu: merge process_addba_req into OnAction_back

The process_addba_req function is called only by OnAction_back. Merge the
two functions.

OnAction_back has already checked that psta != NULL, we can drop the check
in process_addba_req before merging the functions. We can also simplify
the parsing of the tid by using struct ieee80211.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220514164740.282552-4-martin@kaiser.cxSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/core/rtw_mlme_ext.c

@@ -1497,7 +1497,11 @@ unsigned int OnAction_back(struct adapter *padapter, struct recv_frame *precv_fr
 	switch (mgmt->u.action.u.addba_req.action_code) {
 	case WLAN_ACTION_ADDBA_REQ:
 		memcpy(&pmlmeinfo->ADDBA_req, &frame_body[2], sizeof(struct ADDBA_request));
-		process_addba_req(padapter, (u8 *)&pmlmeinfo->ADDBA_req, mgmt->sa);
+		tid = u16_get_bits(le16_to_cpu(mgmt->u.action.u.addba_req.capab),
+				   IEEE80211_ADDBA_PARAM_TID_MASK);
+		preorder_ctrl = &psta->recvreorder_ctrl[tid];
+		preorder_ctrl->indicate_seq = 0xffff;
+		preorder_ctrl->enable = pmlmeinfo->bAcceptAddbaReq;
 
 		if (pmlmeinfo->bAcceptAddbaReq)
 			issue_action_BA(padapter, mgmt->sa, WLAN_ACTION_ADDBA_RESP, 0);

drivers/staging/r8188eu/core/rtw_wlan_util.c

@@ -1464,28 +1464,6 @@ int update_sta_support_rate(struct adapter *padapter, u8 *pvar_ie, uint var_ie_l
 	return _SUCCESS;
 }
 
-void process_addba_req(struct adapter *padapter, u8 *paddba_req, u8 *addr)
-{
-	struct sta_info *psta;
-	u16 tid;
-	u16 param;
-	struct recv_reorder_ctrl *preorder_ctrl;
-	struct sta_priv *pstapriv = &padapter->stapriv;
-	struct ADDBA_request	*preq = (struct ADDBA_request *)paddba_req;
-	struct mlme_ext_priv	*pmlmeext = &padapter->mlmeextpriv;
-	struct mlme_ext_info	*pmlmeinfo = &pmlmeext->mlmext_info;
-
-	psta = rtw_get_stainfo(pstapriv, addr);
-
-	if (psta) {
-		param = le16_to_cpu(preq->BA_para_set);
-		tid = (param >> 2) & 0x0f;
-		preorder_ctrl = &psta->recvreorder_ctrl[tid];
-		preorder_ctrl->indicate_seq = 0xffff;
-		preorder_ctrl->enable = pmlmeinfo->bAcceptAddbaReq;
-	}
-}
-
 void update_TSF(struct mlme_ext_priv *pmlmeext, u8 *pframe, uint len)
 {
 	u8 *pIE;

drivers/staging/r8188eu/include/rtw_mlme_ext.h

@@ -592,8 +592,6 @@ void addba_timer_hdl(struct sta_info *psta);
 bool cckrates_included(unsigned char *rate, int ratelen);
 bool cckratesonly_included(unsigned char *rate, int ratelen);
 
-void process_addba_req(struct adapter *padapter, u8 *paddba_req, u8 *addr);
-
 void update_TSF(struct mlme_ext_priv *pmlmeext, u8 *pframe, uint len);
 void correct_TSF(struct adapter *padapter, struct mlme_ext_priv *pmlmeext);