X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=include%2Fnet%2Fnet_namespace.h;h=235214c4c231e420b4c05e8027f05e07f3c4911c;hb=97577e38284f48ca773392e2d401af2f6c95dc08;hp=547247681345de3e86a217380cab8d7599d6a3f0;hpb=457c4cbc5a3dde259d2a1f15d5f9785290397267;p=linux-2.6

diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h
index 5472476813..235214c4c2 100644
--- a/include/net/net_namespace.h
+++ b/include/net/net_namespace.h
@@ -9,6 +9,8 @@
 #include <linux/list.h>
 
 struct proc_dir_entry;
+struct net_device;
+struct sock;
 struct net {
 	atomic_t		count;		/* To decided when the network
 						 *  namespace should be freed.
@@ -22,11 +24,43 @@ struct net {
 	struct proc_dir_entry 	*proc_net;
 	struct proc_dir_entry 	*proc_net_stat;
 	struct proc_dir_entry 	*proc_net_root;
+
+	struct list_head	sysctl_table_headers;
+
+	struct net_device       *loopback_dev;          /* The loopback */
+
+	struct list_head 	dev_base_head;
+	struct hlist_head 	*dev_name_head;
+	struct hlist_head	*dev_index_head;
+
+	struct sock 		*rtnl;			/* rtnetlink socket */
+
+	/* List of all packet sockets. */
+	rwlock_t		packet_sklist_lock;
+	struct hlist_head	packet_sklist;
 };
 
+#ifdef CONFIG_NET
+/* Init's network namespace */
 extern struct net init_net;
+#define INIT_NET_NS(net_ns) .net_ns = &init_net,
+#else
+#define INIT_NET_NS(net_ns)
+#endif
+
 extern struct list_head net_namespace_list;
 
+#ifdef CONFIG_NET
+extern struct net *copy_net_ns(unsigned long flags, struct net *net_ns);
+#else
+static inline struct net *copy_net_ns(unsigned long flags, struct net *net_ns)
+{
+	/* There is nothing to copy so this is a noop */
+	return net_ns;
+}
+#endif
+
+#ifdef CONFIG_NET_NS
 extern void __put_net(struct net *net);
 
 static inline struct net *get_net(struct net *net)
@@ -35,6 +69,18 @@ static inline struct net *get_net(struct net *net)
 	return net;
 }
 
+static inline struct net *maybe_get_net(struct net *net)
+{
+	/* Used when we know struct net exists but we
+	 * aren't guaranteed a previous reference count
+	 * exists.  If the reference count is zero this
+	 * function fails and returns NULL.
+	 */
+	if (!atomic_inc_not_zero(&net->count))
+		net = NULL;
+	return net;
+}
+
 static inline void put_net(struct net *net)
 {
 	if (atomic_dec_and_test(&net->count))
@@ -51,13 +97,43 @@ static inline void release_net(struct net *net)
 {
 	atomic_dec(&net->use_count);
 }
+#else
+static inline struct net *get_net(struct net *net)
+{
+	return net;
+}
 
-extern void net_lock(void);
-extern void net_unlock(void);
+static inline void put_net(struct net *net)
+{
+}
+
+static inline struct net *hold_net(struct net *net)
+{
+	return net;
+}
+
+static inline void release_net(struct net *net)
+{
+}
+
+static inline struct net *maybe_get_net(struct net *net)
+{
+	return net;
+}
+#endif
 
 #define for_each_net(VAR)				\
 	list_for_each_entry(VAR, &net_namespace_list, list)
 
+#ifdef CONFIG_NET_NS
+#define __net_init
+#define __net_exit
+#define __net_initdata
+#else
+#define __net_init	__init
+#define __net_exit	__exit_refok
+#define __net_initdata	__initdata
+#endif
 
 struct pernet_operations {
 	struct list_head list;
@@ -70,4 +146,11 @@ extern void unregister_pernet_subsys(struct pernet_operations *);
 extern int register_pernet_device(struct pernet_operations *);
 extern void unregister_pernet_device(struct pernet_operations *);
 
+struct ctl_path;
+struct ctl_table;
+struct ctl_table_header;
+extern struct ctl_table_header *register_net_sysctl_table(struct net *net,
+	const struct ctl_path *path, struct ctl_table *table);
+extern void unregister_net_sysctl_table(struct ctl_table_header *header);
+
 #endif /* __NET_NET_NAMESPACE_H */