qcacmn: Implement new INI to switch-on/off excessive logging in DP

In datapath, some of the messages get printed everytime when packet
is received or sent. This situation ends up in excessive logging which
leads to stability issue.

In order to fix the situation, provide knob through INI to control
excessive logging and create new macro for logging the message which
comes under per packet path.

Change-Id: I2af5f9bf39540f952138aa8308401a387fe62bf1
CRs-Fixed: 2376998

dp/inc/cdp_txrx_cmn.h

@@ -29,6 +29,11 @@
 #include "cdp_txrx_ops.h"
 #include "cdp_txrx_handle.h"
 #include "cdp_txrx_cmn_struct.h"
+
+#ifdef ENABLE_VERBOSE_DEBUG
+extern bool is_dp_verbose_debug_enabled;
+#endif
+
 /******************************************************************************
  *
  * Common Data Path Header File
@@ -40,6 +45,30 @@
 #define dp_info(params...) \
 	__QDF_TRACE_FL(QDF_TRACE_LEVEL_INFO_HIGH, QDF_MODULE_ID_DP, ## params)
 #define dp_debug(params...) QDF_TRACE_DEBUG(QDF_MODULE_ID_DP, params)
+#ifdef ENABLE_VERBOSE_DEBUG
+/**
+ * @enum verbose_debug_module:
+ * if INI "enable_verbose_debug" has to set following bit positions to enable
+ * respective module's excessive logging,
+ *
+ * @hif_verbose_debug_mask: 1st bit [0th index] is  for HIF module
+ * @hal_verbose_debug_mask: 2nd bit [1st index] is for HAL module
+ * @dp_verbose_debug_mask:  3rd bit [2nd index] is for DP module
+ */
+enum verbose_debug_module {
+	hif_vebose_debug_mask    = 1 << 0,
+	hal_verbose_debug_mask   = 1 << 1,
+	dp_verbose_debug_mask    = 1 << 2,
+};
+
+#define dp_verbose_debug(params...) \
+		if (unlikely(is_dp_verbose_debug_enabled)) \
+			do {\
+				QDF_TRACE_DEBUG(QDF_MODULE_ID_DP, params); \
+			} while (0)
+#else
+#define dp_verbose_debug(params...) QDF_TRACE_DEBUG(QDF_MODULE_ID_DP, params)
+#endif
 
 #define dp_alert_rl(params...) QDF_TRACE_FATAL_RL(QDF_MODULE_ID_DP, params)
 #define dp_err_rl(params...) QDF_TRACE_ERROR_RL(QDF_MODULE_ID_DP, params)

dp/wifi3.0/dp_main.c

@@ -77,6 +77,9 @@ static void *dp_peer_create_wifi3(struct cdp_vdev *vdev_handle,
 static void dp_peer_delete_wifi3(void *peer_handle, uint32_t bitmap);
 static void dp_ppdu_ring_reset(struct dp_pdev *pdev);
 static void dp_ppdu_ring_cfg(struct dp_pdev *pdev);
+#ifdef ENABLE_VERBOSE_DEBUG
+bool is_dp_verbose_debug_enabled;
+#endif
 
 #define DP_INTR_POLL_TIMER_MS	10
 /* Generic AST entry aging timer value */
@@ -2601,6 +2604,22 @@ static void dp_reo_frag_dst_set(struct dp_soc *soc, uint8_t *frag_dst_ring)
 	}
 }
 
+#ifdef ENABLE_VERBOSE_DEBUG
+static void dp_enable_verbose_debug(struct dp_soc *soc)
+{
+	struct wlan_cfg_dp_soc_ctxt *soc_cfg_ctx;
+
+	soc_cfg_ctx = soc->wlan_cfg_ctx;
+
+	if (soc_cfg_ctx->per_pkt_trace & dp_verbose_debug_mask)
+		is_dp_verbose_debug_enabled = true;
+}
+#else
+static void dp_enable_verbose_debug(struct dp_soc *soc)
+{
+}
+#endif
+
 /*
  * dp_soc_cmn_setup() - Common SoC level initializion
  * @soc:		Datapath SOC handle
@@ -2625,6 +2644,9 @@ static int dp_soc_cmn_setup(struct dp_soc *soc)
 		goto fail1;
 
 	soc_cfg_ctx = soc->wlan_cfg_ctx;
+
+	dp_enable_verbose_debug(soc);
+
 	/* Setup SRNG rings */
 	/* Common rings */
 	if (dp_srng_setup(soc, &soc->wbm_desc_rel_ring, SW2WBM_RELEASE, 0, 0,
@@ -4211,6 +4233,7 @@ static int dp_soc_get_nss_cfg_wifi3(struct cdp_soc_t *cdp_soc)
 	struct dp_soc *dsoc = (struct dp_soc *)cdp_soc;
 	return wlan_cfg_get_dp_soc_nss_cfg(dsoc->wlan_cfg_ctx);
 }
+
 /*
  * dp_soc_set_nss_cfg_wifi3() - SOC set nss config
  * @txrx_soc: Datapath SOC handle

wlan_cfg/cfg_dp.h

@@ -596,6 +596,11 @@
 		WLAN_CFG_RXDMA_ERR_DST_RING_SIZE, \
 		CFG_VALUE_OR_DEFAULT, "RXDMA err destination ring")
 
+#define CFG_DP_PER_PKT_LOGGING \
+		CFG_INI_UINT("enable_verbose_debug", \
+		0, 0xffff, 0, \
+		CFG_VALUE_OR_DEFAULT, "Enable excessive per packet logging")
+
 #define CFG_DP_TX_FLOW_START_QUEUE_OFFSET \
 		CFG_INI_UINT("TxFlowStartQueueOffset", \
 		0, 30, WLAN_CFG_TX_FLOW_START_QUEUE_OFFSET, \
@@ -685,6 +690,7 @@
 		CFG(CFG_DP_RXDMA_MONITOR_STATUS_RING) \
 		CFG(CFG_DP_RXDMA_MONITOR_DESC_RING) \
 		CFG(CFG_DP_RXDMA_ERR_DST_RING) \
+		CFG(CFG_DP_PER_PKT_LOGGING) \
 		CFG(CFG_DP_TX_FLOW_START_QUEUE_OFFSET) \
 		CFG(CFG_DP_TX_FLOW_STOP_QUEUE_TH) \
 		CFG(CFG_DP_IPA_UC_TX_BUF_SIZE) \

wlan_cfg/wlan_cfg.c

@@ -333,7 +333,7 @@ struct wlan_cfg_dp_soc_ctxt *wlan_cfg_soc_attach(void *psoc)
 	/*Enable checksum offload by default*/
 	wlan_cfg_ctx->tcp_udp_checksumoffload =
 			cfg_get(psoc, CFG_DP_TCP_UDP_CKSUM_OFFLOAD);
-
+	wlan_cfg_ctx->per_pkt_trace = cfg_get(psoc, CFG_DP_PER_PKT_LOGGING);
 	wlan_cfg_ctx->defrag_timeout_check =
 			cfg_get(psoc, CFG_DP_DEFRAG_TIMEOUT_CHECK);
 	wlan_cfg_ctx->rx_defrag_min_timeout =

wlan_cfg/wlan_cfg.h

@@ -1,5 +1,5 @@
 /*
-* * Copyright (c) 2013-2019 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2013-2019 The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -203,6 +203,7 @@ struct wlan_cfg_dp_soc_ctxt {
 	int reo_status_ring;
 	int rxdma_refill_ring;
 	int rxdma_err_dst_ring;
+	uint32_t per_pkt_trace;
 	bool raw_mode_war;
 	bool enable_data_stall_detection;
 	bool disable_intra_bss_fwd;
@@ -982,7 +983,6 @@ wlan_cfg_get_dp_soc_rxdma_err_dst_ring_size(struct wlan_cfg_dp_soc_ctxt *cfg);
 bool
 wlan_cfg_get_dp_caps(struct wlan_cfg_dp_soc_ctxt *cfg,
 		     enum cdp_capabilities dp_caps);
-
 #ifdef QCA_LL_TX_FLOW_CONTROL_V2
 int wlan_cfg_get_tx_flow_stop_queue_th(struct wlan_cfg_dp_soc_ctxt *cfg);