qcacld-3.0: Enable twt based on peer capabilities

Enable twt based on peer capabilities, for non-AX devices.

Change-Id: I2710cfa362efe6fc58ad46ed41b1c3fe1b85d6f9
CRs-Fixed: 2287706

core/mac/inc/sir_api.h

@@ -1084,6 +1084,7 @@ typedef struct sSirSmeJoinReq {
 	uint8_t vdev_nss;
 	uint8_t nss;
 	bool nss_forced_1x1;
+	bool enable_session_twt_support;
 	tSirBssDescription bssDescription;
 	/*
 	 * WARNING: Pls make bssDescription as last variable in struct

core/mac/src/pe/include/lim_session.h

@@ -560,6 +560,7 @@ typedef struct sPESession       /* Added to Support BT-AMP */
 	uint8_t peer_twt_requestor;
 	uint8_t peer_twt_responder;
 #endif
+	bool enable_session_twt_support;
 } tPESession, *tpPESession;
 
 struct session_params {

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

@@ -1336,7 +1336,8 @@ __lim_process_sme_join_req(tpAniSirGlobal mac_ctx, uint32_t *msg_buf)
 						 bss_desc->channelId);
 		}
 		session->max_amsdu_num = sme_join_req->max_amsdu_num;
-
+		session->enable_session_twt_support =
+			sme_join_req->enable_session_twt_support;
 		/*
 		 * Store Session related parameters
 		 */

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

@@ -6307,12 +6307,15 @@ void lim_set_stads_rtt_cap(tpDphHashNode sta_ds, struct s_ext_cap *ext_cap,
 #ifdef WLAN_SUPPORT_TWT
 void lim_set_peer_twt_cap(tpPESession session, struct s_ext_cap *ext_cap)
 {
-	session->peer_twt_requestor = ext_cap->twt_requestor_support;
-	session->peer_twt_responder = ext_cap->twt_responder_support;
+	if (session->enable_session_twt_support) {
+		session->peer_twt_requestor = ext_cap->twt_requestor_support;
+		session->peer_twt_responder = ext_cap->twt_responder_support;
+	}
 
-	pe_debug("Ext Cap peer TWT requestor: %d, responder: %d",
+	pe_debug("Ext Cap peer TWT requestor: %d, responder: %d, enable_twt %d",
 		 ext_cap->twt_requestor_support,
-		 ext_cap->twt_responder_support);
+		 ext_cap->twt_responder_support,
+		 session->enable_session_twt_support);
 }
 #endif
 

core/mac/src/sys/legacy/src/utils/src/parser_api.c

@@ -6418,6 +6418,9 @@ QDF_STATUS populate_dot11f_twt_extended_caps(tpAniSirGlobal mac_ctx,
 	QDF_STATUS status = QDF_STATUS_E_FAILURE;
 	struct s_ext_cap *p_ext_cap;
 
+	if (!pe_session->enable_session_twt_support)
+		return QDF_STATUS_SUCCESS;
+
 	dot11f->num_bytes = DOT11F_IE_EXTCAP_MAX_LEN;
 	p_ext_cap = (struct s_ext_cap *)dot11f->bytes;
 

core/sme/src/csr/csr_api_roam.c

@@ -15484,6 +15484,27 @@ csr_check_vendor_ap_3_present(tpAniSirGlobal mac_ctx, uint8_t *ie,
 	return ret;
 }
 
+/**
+ * csr_enable_twt() - Check if its allowed to enable twt for this session
+ * @ie: pointer to beacon/probe resp ie's
+ *
+ * TWT is allowed only if device is in 11ax mode or if QCN ie present.
+ *
+ * Return: true or flase
+ */
+static bool csr_enable_twt(tDot11fBeaconIEs *ie)
+{
+	if (IS_FEATURE_SUPPORTED_BY_FW(DOT11AX))
+		return true;
+
+	if (!ie) {
+		sme_debug("Beacon ie buffer is null");
+		return false;
+	}
+
+	return ie->QCN_IE.present;
+}
+
 /**
  * The communication between HDD and LIM is thru mailbox (MB).
  * Both sides will access the data structure "tSirSmeJoinReq".
@@ -16374,6 +16395,7 @@ QDF_STATUS csr_send_join_req_msg(tpAniSirGlobal pMac, uint32_t sessionId,
 			csr_join_req->enable_bcast_probe_rsp =
 				pMac->roam.configParam.enable_bcast_probe_rsp;
 
+		csr_join_req->enable_session_twt_support = csr_enable_twt(pIes);
 		status = umac_send_mb_message_to_mac(csr_join_req);
 		if (!QDF_IS_STATUS_SUCCESS(status)) {
 			/*