qcacld-3.0: Add rx thread status API for HL targets

For HL targets, frames are queued to ol_rx_thread_queue
during WoW suspend in progress. At this time ol_rx_thread_queue
is in SUSPEND state and these frames can't deliver to Linux
Stack.
for ICMP case, if no other frames come to wake up
system and ICMP timeout will happen.
This change is to add rx thread status check API for HL
targets.

Change-Id: I3d37e6d6ce8f7f6edaf5f78bf5cef77bee6ed523
CRs-Fixed: 3407169

core/cds/inc/cds_sched.h

@@ -36,6 +36,7 @@
 #include "qdf_mc_timer.h"
 #include "cds_config.h"
 #include "qdf_cpuhp.h"
+#include "cdp_txrx_cmn_struct.h"
 
 #define MC_SUSPEND_EVENT            0x002
 #define RX_POST_EVENT               0x001
@@ -341,6 +342,15 @@ void cds_free_ol_rx_pkt(p_cds_sched_context pSchedContext,
  * Return: none
  */
 void cds_free_ol_rx_pkt_freeq(p_cds_sched_context pSchedContext);
+
+/**
+ * cds_get_rx_thread_pending() - get rx thread status
+ * @soc: ol_txrx_soc_handle object
+ *
+ * Return: 1 if rx thread is not empty.
+ *        0 if rx thread is empty.
+ */
+int cds_get_rx_thread_pending(ol_txrx_soc_handle soc);
 #else
 static inline void cds_sched_handle_rx_thread_affinity_req(
 	bool high_throughput) {}
@@ -389,6 +399,10 @@ static inline int cds_sched_handle_throughput_req(
 	return 0;
 }
 
+static inline int cds_get_rx_thread_pending(ol_txrx_soc_handle soc)
+{
+	return 0;
+}
 #endif
 
 /**

core/cds/src/cds_api.c

@@ -145,7 +145,9 @@ static struct ol_if_ops  dp_ol_if_ops = {
     /* TODO: Add any other control path calls required to OL_IF/WMA layer */
 };
 #else
-static struct ol_if_ops  dp_ol_if_ops;
+static struct ol_if_ops  dp_ol_if_ops = {
+	.dp_rx_get_pending = cds_get_rx_thread_pending,
+};
 #endif
 
 static void cds_trigger_recovery_work(void *param);

core/cds/src/cds_sched.c

@@ -918,3 +918,35 @@ int cds_get_gfp_flags(void)
 
 	return flags;
 }
+
+/**
+ * cds_get_rx_thread_pending(): get rx thread status
+ * @soc: ol_txrx_soc_handle object
+ *
+ * Return: 1 if rx thread is not empty.
+ *	   0 if rx thread is empty
+ */
+#ifdef QCA_CONFIG_SMP
+int cds_get_rx_thread_pending(ol_txrx_soc_handle soc)
+{
+	p_cds_sched_context cds_sched_context = get_cds_sched_ctxt();
+
+	if (!cds_sched_context) {
+		cds_err("cds_sched_context is NULL");
+		return 0;
+	}
+
+	spin_lock_bh(&cds_sched_context->ol_rx_queue_lock);
+
+	if (list_empty(&cds_sched_context->ol_rx_thread_queue)) {
+		spin_unlock_bh(&cds_sched_context->ol_rx_queue_lock);
+		return 0;
+	}
+
+	/* In helium there is no scope to get no of pending frames
+	 * in rx thread, Hence return 1 if frames are queued
+	 */
+	spin_unlock_bh(&cds_sched_context->ol_rx_queue_lock);
+	return 1;
+}
+#endif