qcacld-3.0: Send OCE rssi reject BSSID list to firmware

Add support for rssi based assoc rejection from a bssid and
Try to connect to this bssid only after time interval indicated in
Assoc reject or when rssi has improved by margin indicated in Assoc
reject.

On connection send OCE rssi reject BSSID list to firmware so that
firmware will avoid connecting to these BSSID until RSSI improve or
delta interval has elapsed.

Change-Id: I792b2874ed25227bf5fd09d8051549da96db4364
CRs-Fixed: 2070452

core/mac/inc/sir_api.h

@@ -2989,6 +2989,8 @@ struct roam_ext_params {
 	int dense_min_aps_cnt;
 	int initial_dense_status;
 	int traffic_threshold;
+	uint8_t num_rssi_rejection_ap;
+	struct rssi_disallow_bssid rssi_rejection_ap[MAX_RSSI_AVOID_BSSID_LIST];
 };
 
 /**

core/sme/src/csr/csr_api_roam.c

@@ -17417,6 +17417,69 @@ static void check_allowed_ssid_list(tSirRoamOffloadScanReq *req_buffer,
 	}
 }
 
+/**
+ * csr_add_rssi_reject_ap_list() - add rssi reject AP list to the
+ * roam params
+ * @mac_ctx: mac ctx.
+ * @roam_params: roam params in which reject AP list needs
+ * to be populated.
+ *
+ * Return: None
+ */
+static void csr_add_rssi_reject_ap_list(tpAniSirGlobal mac_ctx,
+	struct roam_ext_params *roam_params)
+{
+	int i = 0;
+	struct sir_rssi_disallow_lst *cur_node;
+	qdf_list_node_t *cur_list = NULL;
+	qdf_list_node_t *next_list = NULL;
+	struct rssi_disallow_bssid *rssi_rejection_ap;
+	qdf_list_t *list = &mac_ctx->roam.rssi_disallow_bssid;
+	qdf_time_t cur_time =
+		qdf_do_div(qdf_get_monotonic_boottime(),
+		QDF_MC_TIMER_TO_MS_UNIT);
+
+	roam_params->num_rssi_rejection_ap = qdf_list_size(list);
+
+	if (!qdf_list_size(list))
+		return;
+
+	if (roam_params->num_rssi_rejection_ap > MAX_RSSI_AVOID_BSSID_LIST)
+		roam_params->num_rssi_rejection_ap = MAX_RSSI_AVOID_BSSID_LIST;
+
+	qdf_list_peek_front(list, &cur_list);
+	while (cur_list) {
+		int32_t rem_time;
+
+		rssi_rejection_ap = &roam_params->rssi_rejection_ap[i];
+		cur_node = qdf_container_of(cur_list,
+				struct sir_rssi_disallow_lst, node);
+		rem_time = cur_node->retry_delay -
+			(cur_time - cur_node->time_during_rejection);
+
+		if (rem_time > 0) {
+			qdf_copy_macaddr(&rssi_rejection_ap->bssid,
+					&cur_node->bssid);
+			rssi_rejection_ap->expected_rssi =
+					cur_node->expected_rssi;
+			rssi_rejection_ap->remaining_duration = rem_time;
+			i++;
+		}
+		qdf_list_peek_next(list, cur_list, &next_list);
+		cur_list = next_list;
+		next_list = NULL;
+
+		if (i >= MAX_RSSI_AVOID_BSSID_LIST)
+			break;
+	}
+	for (i = 0; i < roam_params->num_rssi_rejection_ap; i++) {
+		sme_debug("BSSID %pM expected rssi %d remaining duration %d",
+			roam_params->rssi_rejection_ap[i].bssid.bytes,
+			roam_params->rssi_rejection_ap[i].expected_rssi,
+			roam_params->rssi_rejection_ap[i].remaining_duration);
+	}
+}
+
 /*
  * Below Table describe whether RSO command can be send down to fimrware or not.
  * Host check it on the basis of previous RSO command sent down to firmware.
@@ -17871,6 +17934,15 @@ csr_roam_offload_scan(tpAniSirGlobal mac_ctx, uint8_t session_id,
 	roam_params_src = &mac_ctx->roam.configParam.roam_params;
 	if (reason == REASON_ROAM_SET_SSID_ALLOWED)
 		check_allowed_ssid_list(req_buf, roam_params_src);
+
+	/*
+	 * For CTX INT cmd if rssi disallow bssid list have any member
+	 * fill it and send it to firmware so that firmware does not
+	 * try to roam to these BSS untill RSSI OR time condition are
+	 * matched.
+	 */
+	if (reason == REASON_CTX_INIT)
+		csr_add_rssi_reject_ap_list(mac_ctx, roam_params_src);
 	/*
 	 * Configure the lookup threshold either from INI or from framework.
 	 * If both are present, give higher priority to the one from framework.

core/wma/src/wma_scan_roam.c

@@ -1551,7 +1551,7 @@ static QDF_STATUS wma_roam_scan_filter(tp_wma_handle wma_handle,
 	int i;
 	QDF_STATUS status = QDF_STATUS_SUCCESS;
 	uint32_t num_bssid_black_list = 0, num_ssid_white_list = 0,
-	   num_bssid_preferred_list = 0;
+	   num_bssid_preferred_list = 0,  num_rssi_rejection_ap = 0;
 	uint32_t op_bitmap = 0;
 	struct roam_ext_params *roam_params;
 	struct roam_scan_filter_params *params;
@@ -1585,7 +1585,11 @@ static QDF_STATUS wma_roam_scan_filter(tp_wma_handle wma_handle,
 		case REASON_CTX_INIT:
 			if (roam_req->Command == ROAM_SCAN_OFFLOAD_START) {
 				params->lca_disallow_config_present = true;
-				op_bitmap |= ROAM_FILTER_OP_BITMAP_LCA_DISALLOW;
+				op_bitmap |=
+					ROAM_FILTER_OP_BITMAP_LCA_DISALLOW |
+					ROAM_FILTER_OP_BITMAP_RSSI_REJECTION_OCE;
+				num_rssi_rejection_ap =
+					roam_params->num_rssi_rejection_ap;
 			} else {
 				WMA_LOGD("%s : Roam Filter need not be sent", __func__);
 				qdf_mem_free(params);
@@ -1613,6 +1617,7 @@ static QDF_STATUS wma_roam_scan_filter(tp_wma_handle wma_handle,
 	params->num_bssid_black_list = num_bssid_black_list;
 	params->num_ssid_white_list = num_ssid_white_list;
 	params->num_bssid_preferred_list = num_bssid_preferred_list;
+	params->num_rssi_rejection_ap = num_rssi_rejection_ap;
 	qdf_mem_copy(params->bssid_avoid_list, roam_params->bssid_avoid_list,
 			MAX_BSSID_AVOID_LIST * sizeof(struct qdf_mac_addr));
 
@@ -1632,6 +1637,10 @@ static QDF_STATUS wma_roam_scan_filter(tp_wma_handle wma_handle,
 			MAX_BSSID_FAVORED * sizeof(struct qdf_mac_addr));
 	qdf_mem_copy(params->bssid_favored_factor,
 			roam_params->bssid_favored_factor, MAX_BSSID_FAVORED);
+	qdf_mem_copy(params->rssi_rejection_ap,
+		roam_params->rssi_rejection_ap,
+		MAX_RSSI_AVOID_BSSID_LIST *
+		sizeof(struct rssi_disallow_bssid));
 
 	if (params->lca_disallow_config_present) {
 		params->disallow_duration