qcacld-3.0: Allocate g_dph_node_array dynamically

Allocate g_dph_node_array dynamically to reduce build size.

Change-Id: Iffd9c2e205f9ee6b5365ab2e326198677fa57de2
CRs-Fixed: 2290501

Kbuild

@@ -2146,6 +2146,7 @@ cppflags-$(CONFIG_HTT_PADDR64) += -DHTT_PADDR64
 cppflags-$(CONFIG_WLAN_FEATURE_BMI) += -DWLAN_FEATURE_BMI
 cppflags-$(CONFIG_QCN7605_SUPPORT) += -DQCN7605_SUPPORT
 cppflags-$(CONFIG_HIF_REG_WINDOW_SUPPORT) += -DHIF_REG_WINDOW_SUPPORT
+cppflags-$(CONFIG_WLAN_ALLOCATE_GLOBAL_BUFFERS_DYNAMICALLY) += -DWLAN_ALLOCATE_GLOBAL_BUFFERS_DYNAMICALLY
 
 ccflags-$(CONFIG_QCA_LL_TX_FLOW_CONTROL_RESIZE) += -DQCA_LL_TX_FLOW_CONTROL_RESIZE
 

configs/default_defconfig

@@ -570,6 +570,7 @@ CONFIG_WLAN_CONV_SPECTRAL_ENABLE := y
 CONFIG_WLAN_SPECTRAL_ENABLE := y
 CONFIG_WMI_CMD_STRINGS := y
 CONFIG_FEATURE_MONITOR_MODE_SUPPORT := y
+CONFIG_WLAN_ALLOCATE_GLOBAL_BUFFERS_DYNAMICALLY := n
 CONFIG_WLAN_FEATURE_TWT := y
 CONFIG_WLAN_FEATURE_BMI := y
 

configs/genoa.common

@@ -112,6 +112,7 @@ CONFIG_WLAN_FEATURE_DISA := n
 CONFIG_WLAN_FEATURE_FIPS := y
 CONFIG_WLAN_FEATURE_SAE := y
 CONFIG_CHNL_MATRIX_RESTRICTION := n
+CONFIG_WLAN_ALLOCATE_GLOBAL_BUFFERS_DYNAMICALLY := y
 CONFIG_WLAN_FEATURE_BMI := n
 
 #Flags to enable/disable vendor commands

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

@@ -567,6 +567,32 @@ struct session_params {
    Function declarations and documenation
    ------------------------------------------------------------------------*/
 
+#ifdef WLAN_ALLOCATE_GLOBAL_BUFFERS_DYNAMICALLY
+/**
+ * pe_allocate_dph_node_array_buffer() - Allocate g_dph_node_array
+ * memory dynamically
+ *
+ * Return: QDF_STATUS_SUCCESS on success, QDF_STATUS_E_NOMEM on failure
+ */
+QDF_STATUS pe_allocate_dph_node_array_buffer(void);
+
+/**
+ * pe_free_dph_node_array_buffer() - Free memory allocated dynamically
+ *
+ * Return: None
+ */
+void pe_free_dph_node_array_buffer(void);
+#else /* WLAN_ALLOCATE_GLOBAL_BUFFERS_DYNAMICALLY */
+static inline QDF_STATUS pe_allocate_dph_node_array_buffer(void)
+{
+	return QDF_STATUS_SUCCESS;
+}
+
+static inline void pe_free_dph_node_array_buffer(void)
+{
+}
+#endif /* WLAN_ALLOCATE_GLOBAL_BUFFERS_DYNAMICALLY */
+
 /**
  * pe_create_session() - creates a new PE session given the BSSID
  *

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

@@ -879,11 +879,17 @@ QDF_STATUS pe_open(tpAniSirGlobal pMac, struct cds_config_info *cds_cfg)
 		return QDF_STATUS_E_FAILURE;
 	}
 
+	if (!QDF_IS_STATUS_SUCCESS(pe_allocate_dph_node_array_buffer())) {
+		pe_err("g_dph_node_array memory allocate failed!");
+		return QDF_STATUS_E_NOMEM;
+	}
+
 	pMac->lim.limTimers.gpLimCnfWaitTimer =
 		qdf_mem_malloc(sizeof(TX_TIMER) * (pMac->lim.maxStation + 1));
 	if (NULL == pMac->lim.limTimers.gpLimCnfWaitTimer) {
 		pe_err("gpLimCnfWaitTimer memory allocate failed!");
-		return QDF_STATUS_E_NOMEM;
+		status = QDF_STATUS_E_NOMEM;
+		goto pe_open_timer_fail;
 	}
 
 	pMac->lim.gpSession =
@@ -927,6 +933,8 @@ pe_open_lock_fail:
 pe_open_psession_fail:
 	qdf_mem_free(pMac->lim.limTimers.gpLimCnfWaitTimer);
 	pMac->lim.limTimers.gpLimCnfWaitTimer = NULL;
+pe_open_timer_fail:
+	pe_free_dph_node_array_buffer();
 
 	return status;
 }
@@ -963,6 +971,9 @@ QDF_STATUS pe_close(tpAniSirGlobal pMac)
 
 	qdf_mem_free(pMac->lim.gpSession);
 	pMac->lim.gpSession = NULL;
+
+	pe_free_dph_node_array_buffer();
+
 	if (!QDF_IS_STATUS_SUCCESS
 		    (qdf_mutex_destroy(&pMac->lim.lkPeGlobalLock))) {
 		return QDF_STATUS_E_FAILURE;

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

@@ -38,10 +38,48 @@
 #include "sch_api.h"
 #include "lim_send_messages.h"
 
+#ifdef WLAN_ALLOCATE_GLOBAL_BUFFERS_DYNAMICALLY
+static struct sDphHashNode *g_dph_node_array;
 
+QDF_STATUS pe_allocate_dph_node_array_buffer(void)
+{
+	uint32_t buf_size;
+
+	buf_size = SIR_MAX_SUPPORTED_BSS * (SIR_SAP_MAX_NUM_PEERS + 1)
+		   * sizeof(struct sDphHashNode);
+	g_dph_node_array = qdf_mem_malloc(buf_size);
+
+	if (!g_dph_node_array) {
+		pe_err("%s: Failed to allocate %d bytes", __func__, buf_size);
+		return QDF_STATUS_E_NOMEM;
+	} else {
+		return QDF_STATUS_SUCCESS;
+	}
+}
+
+void pe_free_dph_node_array_buffer(void)
+{
+	qdf_mem_free(g_dph_node_array);
+	g_dph_node_array = NULL;
+}
+
+static inline
+struct sDphHashNode *pe_get_session_dph_node_array(uint8_t session_id)
+{
+	return &g_dph_node_array[session_id * (SIR_SAP_MAX_NUM_PEERS + 1)];
+}
+
+#else /* WLAN_ALLOCATE_GLOBAL_BUFFERS_DYNAMICALLY */
 static struct sDphHashNode
 	g_dph_node_array[SIR_MAX_SUPPORTED_BSS][SIR_SAP_MAX_NUM_PEERS + 1];
 
+static inline
+struct sDphHashNode *pe_get_session_dph_node_array(uint8_t session_id)
+{
+	return g_dph_node_array[session_id];
+}
+#endif /* WLAN_ALLOCATE_GLOBAL_BUFFERS_DYNAMICALLY */
+
 /*--------------------------------------------------------------------------
 
    \brief pe_init_beacon_params() - Initialize the beaconParams structure
@@ -560,7 +598,8 @@ pe_create_session(tpAniSirGlobal pMac, uint8_t *bssid, uint8_t *sessionId,
 		return NULL;
 	}
 
-	session_ptr->dph.dphHashTable.pDphNodeArray = g_dph_node_array[i];
+	session_ptr->dph.dphHashTable.pDphNodeArray =
+					pe_get_session_dph_node_array(i);
 	session_ptr->dph.dphHashTable.size = numSta + 1;
 	dph_hash_table_class_init(pMac, &session_ptr->dph.dphHashTable);
 	session_ptr->gpLimPeerIdxpool = qdf_mem_malloc(