1 files changed, 26 insertions, 57 deletions

diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index 5ceb257e860c..33d2a1fba131 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -28,6 +28,7 @@
 static const char fmt_hex[] = "%#x\n";
 static const char fmt_long_hex[] = "%#lx\n";
 static const char fmt_dec[] = "%d\n";
+static const char fmt_udec[] = "%u\n";
 static const char fmt_ulong[] = "%lu\n";
 static const char fmt_u64[] = "%llu\n";
 
@@ -145,13 +146,10 @@ static ssize_t show_speed(struct device *dev,
 	if (!rtnl_trylock())
 		return restart_syscall();
 
-	if (netif_running(netdev) &&
-	    netdev->ethtool_ops &&
-	    netdev->ethtool_ops->get_settings) {
-		struct ethtool_cmd cmd = { ETHTOOL_GSET };
-
-		if (!netdev->ethtool_ops->get_settings(netdev, &cmd))
-			ret = sprintf(buf, fmt_dec, ethtool_cmd_speed(&cmd));
+	if (netif_running(netdev)) {
+		struct ethtool_cmd cmd;
+		if (!dev_ethtool_get_settings(netdev, &cmd))
+			ret = sprintf(buf, fmt_udec, ethtool_cmd_speed(&cmd));
 	}
 	rtnl_unlock();
 	return ret;
@@ -166,13 +164,11 @@ static ssize_t show_duplex(struct device *dev,
 	if (!rtnl_trylock())
 		return restart_syscall();
 
-	if (netif_running(netdev) &&
-	    netdev->ethtool_ops &&
-	    netdev->ethtool_ops->get_settings) {
-		struct ethtool_cmd cmd = { ETHTOOL_GSET };
-
-		if (!netdev->ethtool_ops->get_settings(netdev, &cmd))
-			ret = sprintf(buf, "%s\n", cmd.duplex ? "full" : "half");
+	if (netif_running(netdev)) {
+		struct ethtool_cmd cmd;
+		if (!dev_ethtool_get_settings(netdev, &cmd))
+			ret = sprintf(buf, "%s\n",
+				      cmd.duplex ? "full" : "half");
 	}
 	rtnl_unlock();
 	return ret;
@@ -565,13 +561,6 @@ static ssize_t show_rps_map(struct netdev_rx_queue *queue,
 	return len;
 }
 
-static void rps_map_release(struct rcu_head *rcu)
-{
-	struct rps_map *map = container_of(rcu, struct rps_map, rcu);
-
-	kfree(map);
-}
-
 static ssize_t store_rps_map(struct netdev_rx_queue *queue,
 		      struct rx_queue_attribute *attribute,
 		      const char *buf, size_t len)
@@ -619,7 +608,7 @@ static ssize_t store_rps_map(struct netdev_rx_queue *queue,
 	spin_unlock(&rps_map_lock);
 
 	if (old_map)
-		call_rcu(&old_map->rcu, rps_map_release);
+		kfree_rcu(old_map, rcu);
 
 	free_cpumask_var(mask);
 	return len;
@@ -728,7 +717,7 @@ static void rx_queue_release(struct kobject *kobj)
 	map = rcu_dereference_raw(queue->rps_map);
 	if (map) {
 		RCU_INIT_POINTER(queue->rps_map, NULL);
-		call_rcu(&map->rcu, rps_map_release);
+		kfree_rcu(map, rcu);
 	}
 
 	flow_table = rcu_dereference_raw(queue->rps_flow_table);
@@ -898,21 +887,6 @@ static ssize_t show_xps_map(struct netdev_queue *queue,
 	return len;
 }
 
-static void xps_map_release(struct rcu_head *rcu)
-{
-	struct xps_map *map = container_of(rcu, struct xps_map, rcu);
-
-	kfree(map);
-}
-
-static void xps_dev_maps_release(struct rcu_head *rcu)
-{
-	struct xps_dev_maps *dev_maps =
-	    container_of(rcu, struct xps_dev_maps, rcu);
-
-	kfree(dev_maps);
-}
-
 static DEFINE_MUTEX(xps_map_mutex);
 #define xmap_dereference(P)		\
 	rcu_dereference_protected((P), lockdep_is_held(&xps_map_mutex))
@@ -968,7 +942,7 @@ static ssize_t store_xps_map(struct netdev_queue *queue,
 		} else
 			pos = map_len = alloc_len = 0;
 
-		need_set = cpu_isset(cpu, *mask) && cpu_online(cpu);
+		need_set = cpumask_test_cpu(cpu, mask) && cpu_online(cpu);
 #ifdef CONFIG_NUMA
 		if (need_set) {
 			if (numa_node == -2)
@@ -1009,7 +983,7 @@ static ssize_t store_xps_map(struct netdev_queue *queue,
 		map = dev_maps ?
 			xmap_dereference(dev_maps->cpu_map[cpu]) : NULL;
 		if (map && xmap_dereference(new_dev_maps->cpu_map[cpu]) != map)
-			call_rcu(&map->rcu, xps_map_release);
+			kfree_rcu(map, rcu);
 		if (new_dev_maps->cpu_map[cpu])
 			nonempty = 1;
 	}
@@ -1022,7 +996,7 @@ static ssize_t store_xps_map(struct netdev_queue *queue,
 	}
 
 	if (dev_maps)
-		call_rcu(&dev_maps->rcu, xps_dev_maps_release);
+		kfree_rcu(dev_maps, rcu);
 
 	netdev_queue_numa_node_write(queue, (numa_node >= 0) ? numa_node :
 					    NUMA_NO_NODE);
@@ -1084,7 +1058,7 @@ static void netdev_queue_release(struct kobject *kobj)
 				else {
 					RCU_INIT_POINTER(dev_maps->cpu_map[i],
 					    NULL);
-					call_rcu(&map->rcu, xps_map_release);
+					kfree_rcu(map, rcu);
 					map = NULL;
 				}
 			}
@@ -1094,7 +1068,7 @@ static void netdev_queue_release(struct kobject *kobj)
 
 		if (!nonempty) {
 			RCU_INIT_POINTER(dev->xps_maps, NULL);
-			call_rcu(&dev_maps->rcu, xps_dev_maps_release);
+			kfree_rcu(dev_maps, rcu);
 		}
 	}
 
@@ -1205,9 +1179,14 @@ static void remove_queue_kobjects(struct net_device *net)
 #endif
 }
 
-static const void *net_current_ns(void)
+static void *net_grab_current_ns(void)
 {
-	return current->nsproxy->net_ns;
+	struct net *ns = current->nsproxy->net_ns;
+#ifdef CONFIG_NET_NS
+	if (ns)
+		atomic_inc(&ns->passive);
+#endif
+	return ns;
 }
 
 static const void *net_initial_ns(void)
@@ -1222,22 +1201,13 @@ static const void *net_netlink_ns(struct sock *sk)
 
 struct kobj_ns_type_operations net_ns_type_operations = {
 	.type = KOBJ_NS_TYPE_NET,
-	.current_ns = net_current_ns,
+	.grab_current_ns = net_grab_current_ns,
 	.netlink_ns = net_netlink_ns,
 	.initial_ns = net_initial_ns,
+	.drop_ns = net_drop_ns,
 };
 EXPORT_SYMBOL_GPL(net_ns_type_operations);
 
-static void net_kobj_ns_exit(struct net *net)
-{
-	kobj_ns_exit(KOBJ_NS_TYPE_NET, net);
-}
-
-static struct pernet_operations kobj_net_ops = {
-	.exit = net_kobj_ns_exit,
-};
-
-
 #ifdef CONFIG_HOTPLUG
 static int netdev_uevent(struct device *d, struct kobj_uevent_env *env)
 {
@@ -1365,6 +1335,5 @@ EXPORT_SYMBOL(netdev_class_remove_file);
 int netdev_kobject_init(void)
 {
 	kobj_ns_type_register(&net_ns_type_operations);
-	register_pernet_subsys(&kobj_net_ops);
 	return class_register(&net_class);
 }