net/nfp: enhance flower service framework

Some DPDK applications may not have the service core which
can be used for the NFP flower service, so enhance the flower
service framework by adding an alarm for this situation.

Signed-off-by: Long Wu <[email protected]>
Reviewed-by: Chaoyong He <[email protected]>

Author: wulong2022

drivers/net/nfp/flower/nfp_flower_service.c

@@ -5,6 +5,7 @@
 
 #include "nfp_flower_service.h"
 
+#include <rte_alarm.h>
 #include <rte_spinlock.h>
 
 #include "nfp_flower_ctrl.h"
@@ -16,9 +17,13 @@
 /* Driver limitation, PMD can enlarge it if need. */
 #define MAX_FLOWER_SERVICE_SLOT 8
 
+#define FLOWER_ALARM_INTERVAL 3000
+
 struct nfp_flower_service {
 	/** Flower service is enabled */
 	bool service_enabled;
+	/** Flower alarm is enabled */
+	bool alarm_enabled;
 	/** Flower service info */
 	struct nfp_service_info info;
 	/** Store flower cards' information */
@@ -33,6 +38,52 @@ nfp_flower_service_handle_get(struct nfp_net_hw_priv *hw_priv)
 	return hw_priv->pf_dev->process_share.fl_service;
 }
 
+static void
+nfp_flower_service_alarm_func(void *arg)
+{
+	int ret;
+	uint16_t slot;
+	struct nfp_net_hw_priv *hw_priv;
+	struct nfp_flower_service *service_handle;
+
+	service_handle = arg;
+	if (!service_handle->alarm_enabled)
+		goto alarm_set;
+
+	rte_spinlock_lock(&service_handle->spinlock);
+	for (slot = 0; slot < MAX_FLOWER_SERVICE_SLOT; slot++) {
+		hw_priv = service_handle->slots[slot];
+		if (hw_priv == NULL)
+			continue;
+
+		nfp_flower_ctrl_vnic_process(hw_priv);
+	}
+	rte_spinlock_unlock(&service_handle->spinlock);
+
+alarm_set:
+	ret = rte_eal_alarm_set(FLOWER_ALARM_INTERVAL, nfp_flower_service_alarm_func, arg);
+	if (ret < 0)
+		PMD_DRV_LOG(ERR, "Set flower service alarm failed.");
+}
+
+static int
+nfp_flower_service_alarm_enable(struct nfp_flower_service *service_handle)
+{
+	int ret;
+
+	ret = rte_eal_alarm_set(FLOWER_ALARM_INTERVAL, nfp_flower_service_alarm_func,
+			(void *)service_handle);
+	if (ret < 0) {
+		PMD_DRV_LOG(ERR, "Flower service alarm initialization failed.");
+		return ret;
+	}
+
+	rte_spinlock_init(&service_handle->spinlock);
+	service_handle->alarm_enabled = true;
+
+	return 0;
+}
+
 static int
 nfp_flower_service_func(void *arg)
 {
@@ -109,11 +160,15 @@ nfp_flower_service_start(struct nfp_net_hw_priv *hw_priv)
 	}
 
 	/* Enable flower service when driver initializes the first NIC */
-	if (!service_handle->service_enabled) {
+	if (!service_handle->service_enabled && !service_handle->alarm_enabled) {
 		ret = nfp_flower_service_enable(service_handle);
 		if (ret != 0) {
-			PMD_DRV_LOG(ERR, "Could not enable flower service");
-			return -ESRCH;
+			PMD_DRV_LOG(INFO, "Could not enable flower service.");
+			ret = nfp_flower_service_alarm_enable(service_handle);
+			if (ret != 0) {
+				PMD_DRV_LOG(ERR, "Could not set flower service alarm.");
+				return ret;
+			}
 		}
 	}
 
@@ -157,8 +212,13 @@ nfp_flower_service_stop(struct nfp_net_hw_priv *hw_priv)
 	if (count > 1)
 		return;
 
-	if (nfp_service_disable(&service_handle->info) != 0)
-		PMD_DRV_LOG(ERR, "Could not disable service");
+	if (service_handle->service_enabled) {
+		if (nfp_service_disable(&service_handle->info) != 0)
+			PMD_DRV_LOG(ERR, "Could not disable service.");
+	} else if (service_handle->alarm_enabled) {
+		rte_eal_alarm_cancel(nfp_flower_service_alarm_func,
+				(void *)service_handle);
+	}
 }
 
 int