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);
 }