@@ -5,6 +5,7 @@
 ;
 [Features]
 Link status          = Y
+Link status event    = Y
 Queue start/stop     = Y
 MTU update           = Y
 Jumbo frame          = Y

@@ -238,6 +238,7 @@ eth_dev_create(const char *name,
 		mac->addr_bytes[0], mac->addr_bytes[1],
 		mac->addr_bytes[2], mac->addr_bytes[3],
 		mac->addr_bytes[4], mac->addr_bytes[5]);
+	dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC;
 	return 0;
 free_args:
 	failsafe_args_free(dev);

@@ -374,3 +374,21 @@ failsafe_eth_rmv_event_callback(uint8_t port_id __rte_unused,
 			      cb_arg))
 		ERROR("Could not set up deferred sub_device removal");
 }
+
+void
+failsafe_eth_lsc_event_callback(uint8_t port_id __rte_unused,
+				enum rte_eth_event_type event,
+				void *cb_arg)
+{
+	struct rte_eth_dev *dev = cb_arg;
+	int ret;
+
+	if (event != RTE_ETH_EVENT_INTR_LSC) {
+		ERROR("Incorrect event");
+		return;
+	}
+	ret = dev->dev_ops->link_update(dev, 0);
+	/* We must pass on the LSC event */
+	if (ret)
+		_rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL);
+}

@@ -199,6 +199,8 @@ fs_dev_configure(struct rte_eth_dev *dev)
 	}
 	FOREACH_SUBDEV(sdev, i, dev) {
 		int rmv_interrupt = 0;
+		int lsc_interrupt = 0;
+		int lsc_enabled;
 
 		if (sdev->state != DEV_PROBED)
 			continue;

@@ -211,6 +213,18 @@ fs_dev_configure(struct rte_eth_dev *dev)
 		} else {
 			DEBUG("sub_device %d does not support RMV event", i);
 		}
+
+		lsc_enabled = dev->data->dev_conf.intr_conf.lsc;
+		lsc_interrupt = lsc_enabled &&
+				(ETH(sdev)->data->dev_flags &
+				 RTE_ETH_DEV_INTR_LSC);
+		if (lsc_interrupt) {
+			DEBUG("Enabling LSC interrupts for sub_device %d", i);
+			dev->data->dev_conf.intr_conf.lsc = 1;
+		} else if (lsc_enabled && !lsc_interrupt) {
+			DEBUG("Disabling LSC interrupts for sub_device %d", i);
+			dev->data->dev_conf.intr_conf.lsc = 0;
+		}
 		DEBUG("Configuring sub-device %d", i);
 		ret = rte_eth_dev_configure(PORT_ID(sdev),
 					dev->data->nb_rx_queues,

@@ -230,6 +244,16 @@ fs_dev_configure(struct rte_eth_dev *dev)
 				     SUB_ID(sdev));
 		}
 		dev->data->dev_conf.intr_conf.rmv = 0;
+		if (lsc_interrupt) {
+			ret = rte_eth_dev_callback_register(PORT_ID(sdev),
+							RTE_ETH_EVENT_INTR_LSC,
+							failsafe_eth_lsc_event_callback,
+							dev);
+			if (ret)
+				WARN("Failed to register LSC callback for sub_device %d",
+				     SUB_ID(sdev));
+		}
+		dev->data->dev_conf.intr_conf.lsc = lsc_enabled;
 		sdev->state = DEV_ACTIVE;
 	}
 	if (PRIV(dev)->state < DEV_ACTIVE)

@@ -182,6 +182,9 @@ int failsafe_eth_dev_state_sync(struct rte_eth_dev *dev);
 void failsafe_eth_rmv_event_callback(uint8_t port_id,
 				     enum rte_eth_event_type type,
 				     void *arg);
+void failsafe_eth_lsc_event_callback(uint8_t port_id,
+				     enum rte_eth_event_type event,
+				     void *cb_arg);
 
 /* GLOBALS */