qcacld-3.0: Add new ini to set delay Hand-off period

Add new ini item "ho_delay_for_rx" to set delay Hand-off
period. For LFR 3.0 roaming scenario, once roam candidate
is found, firmware waits for minimum this much duration
to receive pending rx frames from current BSS before
switching to new channel for handoff to new AP.

Change-Id: Ided9a81e9402259f5df6b42926b3fa336b6bb4d0
CRs-Fixed: 2221748

core/hdd/inc/wlan_hdd_cfg.h

@@ -2155,6 +2155,31 @@ enum hdd_dot11_mode {
 #define CFG_ROAM_BG_SCAN_BAD_RSSI_OFFSET_2G_MAX     (86)
 #define CFG_ROAM_BG_SCAN_BAD_RSSI_OFFSET_2G_DEFAULT (40)
 
+/*
+ * <ini>
+ * ho_delay_for_rx - Delay Hand-off (In msec) by this duration to receive
+ * pending rx frames from current BSS
+ * @Min: 0
+ * @Max: 200
+ * @Default: 0
+ *
+ * For LFR 3.0 roaming scenario, once roam candidate is found, firmware
+ * waits for minimum this much duration to receive pending rx frames from
+ * current BSS before switching to new channel for handoff to new AP.
+ *
+ * Related: None
+ *
+ * Supported Feature: Roaming
+ *
+ * Usage: External
+ *
+ * </ini>
+ */
+#define CFG_ROAM_HO_DELAY_FOR_RX_NAME    "ho_delay_for_rx"
+#define CFG_ROAM_HO_DELAY_FOR_RX_MIN     (0)
+#define CFG_ROAM_HO_DELAY_FOR_RX_MAX     (200)
+#define CFG_ROAM_HO_DELAY_FOR_RX_DEFAULT (0)
+
 /*
  * <ini>
  * roamscan_adaptive_dwell_mode - Sets dwell time adaptive mode
@@ -14521,6 +14546,7 @@ struct hdd_config {
 	uint32_t roam_dense_min_aps;
 	int8_t roam_bg_scan_bad_rssi_thresh;
 	uint8_t roam_bad_rssi_thresh_offset_2g;
+	uint32_t ho_delay_for_rx;
 	uint32_t roam_bg_scan_client_bitmap;
 	bool enable_edca_params;
 	uint32_t edca_vo_cwmin;

core/hdd/src/wlan_hdd_cfg.c

@@ -3860,6 +3860,14 @@ struct reg_table_entry g_registry_table[] = {
 		CFG_ROAM_BG_SCAN_BAD_RSSI_OFFSET_2G_MIN,
 		CFG_ROAM_BG_SCAN_BAD_RSSI_OFFSET_2G_MAX),
 
+	REG_VARIABLE(CFG_ROAM_HO_DELAY_FOR_RX_NAME,
+		WLAN_PARAM_Integer, struct hdd_config,
+		ho_delay_for_rx,
+		VAR_FLAGS_OPTIONAL | VAR_FLAGS_RANGE_CHECK_ASSUME_DEFAULT,
+		CFG_ROAM_HO_DELAY_FOR_RX_DEFAULT,
+		CFG_ROAM_HO_DELAY_FOR_RX_MIN,
+		CFG_ROAM_HO_DELAY_FOR_RX_MAX),
+
 	REG_VARIABLE(CFG_ENABLE_FATAL_EVENT_TRIGGER, WLAN_PARAM_Integer,
 			struct hdd_config, enable_fatal_event,
 			VAR_FLAGS_OPTIONAL |
@@ -6842,6 +6850,9 @@ void hdd_cfg_print(struct hdd_context *hdd_ctx)
 	hdd_debug("Name = [%s] Value = [%u]",
 		CFG_ROAM_BG_SCAN_BAD_RSSI_OFFSET_2G_NAME,
 		hdd_ctx->config->roam_bad_rssi_thresh_offset_2g);
+	hdd_debug("Name = [%s] Value = [%u]",
+		CFG_ROAM_HO_DELAY_FOR_RX_NAME,
+		hdd_ctx->config->ho_delay_for_rx);
 	hdd_debug("Name = [%s] Value = [%u]",
 		CFG_MIN_REST_TIME_NAME,
 		hdd_ctx->config->min_rest_time_conc);
@@ -8796,6 +8807,8 @@ QDF_STATUS hdd_set_sme_config(struct hdd_context *hdd_ctx)
 		hdd_ctx->config->roam_bg_scan_client_bitmap;
 	smeConfig->csrConfig.roam_bad_rssi_thresh_offset_2g =
 		hdd_ctx->config->roam_bad_rssi_thresh_offset_2g;
+	smeConfig->csrConfig.ho_delay_for_rx =
+		hdd_ctx->config->ho_delay_for_rx;
 	smeConfig->csrConfig.obss_width_interval =
 			hdd_ctx->config->obss_width_trigger_interval;
 	smeConfig->csrConfig.obss_active_dwelltime =

core/mac/inc/sir_api.h

@@ -2941,6 +2941,7 @@ typedef struct sSirRoamOffloadScanReq {
 	uint32_t btm_max_attempt_cnt;
 	uint32_t btm_sticky_time;
 	struct wmi_11k_offload_params offload_11k_params;
+	uint32_t ho_delay_for_rx;
 } tSirRoamOffloadScanReq, *tpSirRoamOffloadScanReq;
 
 typedef struct sSirRoamOffloadScanRsp {

core/sme/inc/csr_api.h

@@ -1211,6 +1211,7 @@ typedef struct tagCsrConfigParam {
 	bool enable_vht20_mcs9;
 	uint8_t max_amsdu_num;
 	uint8_t nSelect5GHzMargin;
+	uint32_t ho_delay_for_rx;
 	uint8_t isCoalesingInIBSSAllowed;
 #ifdef FEATURE_WLAN_MCC_TO_SCC_SWITCH
 	uint8_t cc_switch_mode;

core/sme/inc/csr_internal.h

@@ -537,6 +537,7 @@ struct csr_config {
 	bool enableHeartBeatOffload;
 	uint8_t max_amsdu_num;
 	uint8_t nSelect5GHzMargin;
+	uint32_t ho_delay_for_rx;
 	uint8_t isCoalesingInIBSSAllowed;
 #ifdef FEATURE_WLAN_MCC_TO_SCC_SWITCH
 	uint8_t cc_switch_mode;

core/sme/src/csr/csr_api_roam.c

@@ -2938,6 +2938,8 @@ QDF_STATUS csr_change_default_config_param(tpAniSirGlobal pMac,
 			pParam->max_amsdu_num;
 		pMac->roam.configParam.nSelect5GHzMargin =
 			pParam->nSelect5GHzMargin;
+		pMac->roam.configParam.ho_delay_for_rx =
+			pParam->ho_delay_for_rx;
 		pMac->roam.configParam.isCoalesingInIBSSAllowed =
 			pParam->isCoalesingInIBSSAllowed;
 #ifdef FEATURE_WLAN_MCC_TO_SCC_SWITCH
@@ -3279,6 +3281,7 @@ QDF_STATUS csr_get_config_param(tpAniSirGlobal pMac, tCsrConfigParam *pParam)
 	pParam->disable_high_ht_mcs_2x2 = cfg_params->disable_high_ht_mcs_2x2;
 	pParam->max_amsdu_num = cfg_params->max_amsdu_num;
 	pParam->nSelect5GHzMargin = cfg_params->nSelect5GHzMargin;
+	pParam->ho_delay_for_rx = cfg_params->ho_delay_for_rx;
 	pParam->isCoalesingInIBSSAllowed = cfg_params->isCoalesingInIBSSAllowed;
 	pParam->allowDFSChannelRoam = cfg_params->allowDFSChannelRoam;
 	pParam->nInitialDwellTime = cfg_params->nInitialDwellTime;
@@ -17792,6 +17795,7 @@ csr_update_roam_scan_offload_request(tpAniSirGlobal mac_ctx,
 	req_buf->Prefer5GHz = mac_ctx->roam.configParam.nRoamPrefer5GHz;
 	req_buf->RoamRssiCatGap = mac_ctx->roam.configParam.bCatRssiOffset;
 	req_buf->Select5GHzMargin = mac_ctx->roam.configParam.nSelect5GHzMargin;
+	req_buf->ho_delay_for_rx = mac_ctx->roam.configParam.ho_delay_for_rx;
 	if (wlan_cfg_get_int(mac_ctx, WNI_CFG_REASSOCIATION_FAILURE_TIMEOUT,
 			     (uint32_t *) &req_buf->ReassocFailureTimeout)
 	    != eSIR_SUCCESS) {

core/wma/src/wma_scan_roam.c

@@ -337,6 +337,8 @@ QDF_STATUS wma_roam_scan_offload_mode(tp_wma_handle wma_handle,
 		params->is_roam_req_valid = 1;
 #ifdef WLAN_FEATURE_ROAM_OFFLOAD
 		params->roam_offload_enabled = roam_req->RoamOffloadEnabled;
+		params->roam_offload_params.ho_delay_for_rx =
+				roam_req->ho_delay_for_rx;
 		params->prefer_5ghz = roam_req->Prefer5GHz;
 		params->roam_rssi_cat_gap = roam_req->RoamRssiCatGap;
 		params->select_5ghz_margin = roam_req->Select5GHzMargin;
@@ -367,10 +369,10 @@ QDF_STATUS wma_roam_scan_offload_mode(tp_wma_handle wma_handle,
 		wma_roam_scan_fill_fils_params(wma_handle, params, roam_req);
 	}
 
-	WMA_LOGD(FL("qos_caps: %d, qos_enabled: %d, roam_scan_mode: %d"),
+	WMA_LOGD(FL("qos_caps: %d, qos_enabled: %d, ho_delay_for_rx: %d, roam_scan_mode: %d"),
 		params->roam_offload_params.qos_caps,
 		params->roam_offload_params.qos_enabled,
-		params->mode);
+		params->roam_offload_params.ho_delay_for_rx, params->mode);
 
 	status = wmi_unified_roam_scan_offload_mode_cmd(wma_handle->wmi_handle,
 				scan_cmd_fp, params);