sunrpc: The per-net skeleton

Register empty per-net operations for the sunrpc layer.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

2 files changed, 42 insertions, 1 deletions

diff --git a/net/sunrpc/netns.h b/net/sunrpc/netns.h
new file mode 100644
index 000000000000..b2d18af2815e
--- /dev/null
+++ b/net/sunrpc/netns.h
@@ -0,0 +1,12 @@
+#ifndef __SUNRPC_NETNS_H__
+#define __SUNRPC_NETNS_H__
+
+#include <net/net_namespace.h>
+#include <net/netns/generic.h>
+
+struct sunrpc_net {
+};
+
+extern int sunrpc_net_id;
+
+#endif
diff --git a/net/sunrpc/sunrpc_syms.c b/net/sunrpc/sunrpc_syms.c
index c0d085013a2b..faa23229bd25 100644
--- a/net/sunrpc/sunrpc_syms.c
+++ b/net/sunrpc/sunrpc_syms.c
@@ -22,6 +22,26 @@
 #include <linux/sunrpc/rpc_pipe_fs.h>
 #include <linux/sunrpc/xprtsock.h>
 
+#include "netns.h"
+
+int sunrpc_net_id;
+
+static __net_init int sunrpc_init_net(struct net *net)
+{
+        return 0;
+}
+
+static __net_exit void sunrpc_exit_net(struct net *net)
+{
+}
+
+static struct pernet_operations sunrpc_net_ops = {
+        .init = sunrpc_init_net,
+        .exit = sunrpc_exit_net,
+        .id = &sunrpc_net_id,
+        .size = sizeof(struct sunrpc_net),
+};
+
 extern struct cache_detail ip_map_cache, unix_gid_cache;
 
 extern void cleanup_rpcb_clnt(void);
@@ -38,18 +58,26 @@ init_sunrpc(void)
         err = rpcauth_init_module();
         if (err)
                 goto out3;
+
+        cache_initialize();
+
+        err = register_pernet_subsys(&sunrpc_net_ops);
+        if (err)
+                goto out4;
 #ifdef RPC_DEBUG
         rpc_register_sysctl();
 #endif
 #ifdef CONFIG_PROC_FS
         rpc_proc_init();
 #endif
-        cache_initialize();
         cache_register(&ip_map_cache);
         cache_register(&unix_gid_cache);
         svc_init_xprt_sock();   /* svc sock transport */
         init_socket_xprt();     /* clnt sock transport */
         return 0;
+
+out4:
+        rpcauth_remove_module();
 out3:
         rpc_destroy_mempool();
 out2:
@@ -69,6 +97,7 @@ cleanup_sunrpc(void)
         rpc_destroy_mempool();
         cache_unregister(&ip_map_cache);
         cache_unregister(&unix_gid_cache);
+        unregister_pernet_subsys(&sunrpc_net_ops);
 #ifdef RPC_DEBUG
         rpc_unregister_sysctl();
 #endif