liquidio: napi cleanup

Disable napi when interface is going down.
Delete napi when destroying the interface.

Signed-off-by: Intiyaz Basha <intiyaz.basha@cavium.com>
Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/cavium/liquidio/lio_main.c

@@ -1736,6 +1736,10 @@ static void liquidio_destroy_nic_device(struct octeon_device *oct, int ifidx)
 			oct->droq[0]->ops.poll_mode = 0;
 	}
 
+	/* Delete NAPI */
+	list_for_each_entry_safe(napi, n, &netdev->napi_list, dev_list)
+		netif_napi_del(napi);
+
 	if (atomic_read(&lio->ifstate) & LIO_IFSTATE_REGISTERED)
 		unregister_netdev(netdev);
 
@@ -2770,6 +2774,17 @@ static int liquidio_stop(struct net_device *netdev)
 {
 	struct lio *lio = GET_LIO(netdev);
 	struct octeon_device *oct = lio->oct_dev;
+	struct napi_struct *napi, *n;
+
+	if (oct->props[lio->ifidx].napi_enabled) {
+		list_for_each_entry_safe(napi, n, &netdev->napi_list, dev_list)
+			napi_disable(napi);
+
+		oct->props[lio->ifidx].napi_enabled = 0;
+
+		if (OCTEON_CN23XX_PF(oct))
+			oct->droq[0]->ops.poll_mode = 0;
+	}
 
 	ifstate_reset(lio, LIO_IFSTATE_RUNNING);
 

drivers/net/ethernet/cavium/liquidio/lio_vf_main.c

@@ -1137,6 +1137,10 @@ static void liquidio_destroy_nic_device(struct octeon_device *oct, int ifidx)
 		oct->droq[0]->ops.poll_mode = 0;
 	}
 
+	/* Delete NAPI */
+	list_for_each_entry_safe(napi, n, &netdev->napi_list, dev_list)
+		netif_napi_del(napi);
+
 	if (atomic_read(&lio->ifstate) & LIO_IFSTATE_REGISTERED)
 		unregister_netdev(netdev);
 
@@ -1784,6 +1788,16 @@ static int liquidio_stop(struct net_device *netdev)
 {
 	struct lio *lio = GET_LIO(netdev);
 	struct octeon_device *oct = lio->oct_dev;
+	struct napi_struct *napi, *n;
+
+	if (oct->props[lio->ifidx].napi_enabled) {
+		list_for_each_entry_safe(napi, n, &netdev->napi_list, dev_list)
+			napi_disable(napi);
+
+		oct->props[lio->ifidx].napi_enabled = 0;
+
+		oct->droq[0]->ops.poll_mode = 0;
+	}
 
 	netif_info(lio, ifdown, lio->netdev, "Stopping interface!\n");
 	/* Inform that netif carrier is down */