qcacld-3.0: Send assoc reject upon failing to post ASSOC_IND

Currently, lim silently drops the association if it fails to
post ASSOC_IND due to some reason(e.g. invalid contents of
assoc request) and the MLM state is stuck in
eLIM_MLM_WT_ASSOC_CNF_STATE. Station context is not cleaned up
till the next association. Gracefully cleanup the association
in such failure cases.

Change-Id: Iede43a1ddc4ac6ef300af02776b153b58dd70c2c
CRs-Fixed: 2810235

core/mac/src/pe/lim/lim_process_assoc_req_frame.c

@@ -2546,19 +2546,9 @@ static void fill_mlm_assoc_ind_vht(tpSirAssocReq assocreq,
 	}
 }
 
-/**
- * lim_send_mlm_assoc_ind() - Sends assoc indication to SME
- * @mac_ctx: Global Mac context
- * @sta_ds: Station DPH hash entry
- * @session_entry: PE session entry
- *
- * This function sends either LIM_MLM_ASSOC_IND
- * or LIM_MLM_REASSOC_IND to SME.
- *
- * Return: None
- */
-void lim_send_mlm_assoc_ind(tpAniSirGlobal mac_ctx,
-	tpDphHashNode sta_ds, tpPESession session_entry)
+QDF_STATUS lim_send_mlm_assoc_ind(tpAniSirGlobal mac_ctx,
+				  tpDphHashNode sta_ds,
+				  tpPESession session_entry)
 {
 	tpLimMlmAssocInd assoc_ind = NULL;
 	tpSirAssocReq assoc_req;
@@ -2571,7 +2561,7 @@ void lim_send_mlm_assoc_ind(tpAniSirGlobal mac_ctx,
 
 	if (!session_entry->parsedAssocReq) {
 		pe_err(" Parsed Assoc req is NULL");
-		return;
+		return QDF_STATUS_E_INVAL;
 	}
 
 	/* Get a copy of the already parsed Assoc Request */
@@ -2580,7 +2570,7 @@ void lim_send_mlm_assoc_ind(tpAniSirGlobal mac_ctx,
 
 	if (!assoc_req) {
 		pe_err("assoc req for assoc_id:%d is NULL", sta_ds->assocId);
-		return;
+		return QDF_STATUS_E_INVAL;
 	}
 
 	/* Get the phy_mode */
@@ -2605,7 +2595,7 @@ void lim_send_mlm_assoc_ind(tpAniSirGlobal mac_ctx,
 			lim_release_peer_idx(mac_ctx, sta_ds->assocId,
 				session_entry);
 			pe_err("AllocateMemory failed for assoc_ind");
-			return;
+			return QDF_STATUS_E_NOMEM;
 		}
 		qdf_mem_copy((uint8_t *) assoc_ind->peerMacAddr,
 			(uint8_t *) sta_ds->staAddr, sizeof(tSirMacAddr));
@@ -2659,7 +2649,7 @@ void lim_send_mlm_assoc_ind(tpAniSirGlobal mac_ctx,
 				pe_err("rsnIEdata index out of bounds: %d",
 					rsn_len);
 				qdf_mem_free(assoc_ind);
-				return;
+				return QDF_STATUS_E_INVAL;
 			}
 			assoc_ind->rsnIE.rsnIEdata[rsn_len] =
 				SIR_MAC_WPA_EID;
@@ -2819,5 +2809,5 @@ void lim_send_mlm_assoc_ind(tpAniSirGlobal mac_ctx,
 			 (uint32_t *) assoc_ind);
 		qdf_mem_free(assoc_ind);
 	}
-	return;
+	return QDF_STATUS_SUCCESS;
 }

core/mac/src/pe/lim/lim_process_mlm_rsp_messages.c

@@ -1993,7 +1993,15 @@ void lim_process_ap_mlm_add_sta_rsp(tpAniSirGlobal pMac,
 	 * 2) PE receives eWNI_SME_ASSOC_CNF from SME
 	 * 3) BTAMP-AP sends Re/Association Response to BTAMP-STA
 	 */
-	lim_send_mlm_assoc_ind(pMac, pStaDs, psessionEntry);
+	if (lim_send_mlm_assoc_ind(pMac, pStaDs, psessionEntry) !=
+							QDF_STATUS_SUCCESS) {
+		lim_reject_association(pMac, pStaDs->staAddr,
+				       pStaDs->mlmStaContext.subType,
+				       true, pStaDs->mlmStaContext.authType,
+				       pStaDs->assocId, true,
+				       eSIR_MAC_UNSPEC_FAILURE_STATUS,
+				       psessionEntry);
+	}
 	/* fall though to reclaim the original Add STA Response message */
 end:
 	if (0 != limMsgQ->bodyptr) {

core/mac/src/pe/lim/lim_types.h

@@ -474,8 +474,21 @@ QDF_STATUS lim_process_auth_frame_no_session(tpAniSirGlobal mac,
 
 
 void lim_process_assoc_req_frame(tpAniSirGlobal, uint8_t *, uint8_t, tpPESession);
-void lim_send_mlm_assoc_ind(tpAniSirGlobal pMac, tpDphHashNode pStaDs,
-			    tpPESession psessionEntry);
+
+/**
+ * lim_send_mlm_assoc_ind() - Sends assoc indication to SME
+ * @mac_ctx: Global Mac context
+ * @sta_ds: Station DPH hash entry
+ * @session_entry: PE session entry
+ *
+ * This function sends either LIM_MLM_ASSOC_IND
+ * or LIM_MLM_REASSOC_IND to SME.
+ *
+ * Return: QDF_STATUS
+ */
+QDF_STATUS lim_send_mlm_assoc_ind(tpAniSirGlobal mac_ctx,
+				  tpDphHashNode sta_ds,
+				  tpPESession session_entry);
 
 void lim_process_assoc_rsp_frame(tpAniSirGlobal, uint8_t *, uint8_t, tpPESession);
 void lim_process_disassoc_frame(tpAniSirGlobal, uint8_t *, tpPESession);