qcacld-3.0: Add INI to control tcp_limit_output_bytes tuning

Current driver posts the high and low Tx TPUT indications to cnss-daemon to
tune  the tcp_limit_output_byte system parameter. Add option to disable it.

Change-Id: Ic65fe0bd762024425cabf2f1f07123211dce5dce
CRs-Fixed: 2197112

core/hdd/inc/wlan_hdd_cfg.h

@@ -8267,6 +8267,29 @@ enum hdd_link_speed_rpt_type {
 #define CFG_BUS_BANDWIDTH_COMPUTE_INTERVAL_DEFAULT (100)
 #define CFG_BUS_BANDWIDTH_COMPUTE_INTERVAL_MIN     (0)
 #define CFG_BUS_BANDWIDTH_COMPUTE_INTERVAL_MAX     (10000)
+
+/*
+ * <ini>
+ * gEnableTcpLimitOutput - Control to enable TCP limit output byte
+ * @Min: 0
+ * @Max: 1
+ * @Default: 1
+ *
+ * This ini is used to enable dynamic configuration of TCP limit output bytes
+ * tcp_limit_output_bytes param. Enabling this will let driver post message to
+ * cnss-daemon, accordingly cnss-daemon will modify the tcp_limit_output_bytes.
+ *
+ * Supported Feature: Tcp limit output bytes
+ *
+ * Usage: Internal
+ *
+ * </ini>
+ */
+#define CFG_ENABLE_TCP_LIMIT_OUTPUT                      "gTcpLimitOutputEnable"
+#define CFG_ENABLE_TCP_LIMIT_OUTPUT_DEFAULT              (1)
+#define CFG_ENABLE_TCP_LIMIT_OUTPUT_MIN                  (0)
+#define CFG_ENABLE_TCP_LIMIT_OUTPUT_MAX                  (1)
+
 /*
  * <ini>
  * gTcpAdvWinScaleEnable - Control to enable  TCP adv window scaling
@@ -14883,6 +14906,7 @@ struct hdd_config {
 	uint32_t busBandwidthLowThreshold;
 	uint32_t busBandwidthComputeInterval;
 	uint32_t enable_tcp_delack;
+	bool     enable_tcp_limit_output;
 	uint32_t enable_tcp_adv_win_scale;
 	uint32_t tcpDelackThresholdHigh;
 	uint32_t tcpDelackThresholdLow;

core/hdd/src/wlan_hdd_cfg.c

@@ -3217,6 +3217,13 @@ struct reg_table_entry g_registry_table[] = {
 		     CFG_BUS_BANDWIDTH_COMPUTE_INTERVAL_MIN,
 		     CFG_BUS_BANDWIDTH_COMPUTE_INTERVAL_MAX),
 
+	REG_VARIABLE(CFG_ENABLE_TCP_LIMIT_OUTPUT, WLAN_PARAM_Integer,
+		     struct hdd_config, enable_tcp_limit_output,
+		     VAR_FLAGS_OPTIONAL | VAR_FLAGS_RANGE_CHECK_ASSUME_DEFAULT,
+		     CFG_ENABLE_TCP_LIMIT_OUTPUT_DEFAULT,
+		     CFG_ENABLE_TCP_LIMIT_OUTPUT_MIN,
+		     CFG_ENABLE_TCP_LIMIT_OUTPUT_MAX),
+
 	REG_VARIABLE(CFG_ENABLE_TCP_ADV_WIN_SCALE, WLAN_PARAM_Integer,
 		     struct hdd_config, enable_tcp_adv_win_scale,
 		     VAR_FLAGS_OPTIONAL | VAR_FLAGS_RANGE_CHECK_ASSUME_DEFAULT,
@@ -6877,6 +6884,9 @@ void hdd_cfg_print(struct hdd_context *hdd_ctx)
 		  hdd_ctx->config->busBandwidthLowThreshold);
 	hdd_debug("Name = [gbusBandwidthComputeInterval] Value = [%u] ",
 		  hdd_ctx->config->busBandwidthComputeInterval);
+	hdd_debug("Name = [%s] Value = [%u] ",
+		  CFG_ENABLE_TCP_LIMIT_OUTPUT,
+		  hdd_ctx->config->enable_tcp_limit_output);
 	hdd_debug("Name = [%s] Value = [%u] ",
 		  CFG_ENABLE_TCP_ADV_WIN_SCALE,
 		  hdd_ctx->config->enable_tcp_adv_win_scale);

core/hdd/src/wlan_hdd_main.c

@@ -6931,7 +6931,8 @@ static void hdd_pld_request_bus_bandwidth(struct hdd_context *hdd_ctx,
 	else
 		next_tx_level = WLAN_SVC_TP_LOW;
 
-	if (hdd_ctx->cur_tx_level != next_tx_level) {
+	if ((hdd_ctx->config->enable_tcp_limit_output) &&
+	    (hdd_ctx->cur_tx_level != next_tx_level)) {
 		hdd_debug("change TCP TX trigger level %d, average_tx: %llu",
 				next_tx_level, temp_tx);
 		hdd_ctx->cur_tx_level = next_tx_level;