tipc: make tipc node table aware of net namespace

Global variables associated with node table are below:
- node table list (node_htable)
- node hash table list (tipc_node_list)
- node table lock (node_list_lock)
- node number counter (tipc_num_nodes)
- node link number counter (tipc_num_links)

To make node table support namespace, above global variables must be
moved to tipc_net structure in order to keep secret for different
namespaces. As a consequence, these variables are allocated and
initialized when namespace is created, and deallocated when namespace
is destroyed. After the change, functions associated with these
variables have to utilize a namespace pointer to access them. So
adding namespace pointer as a parameter of these functions is the
major change made in the commit.

Signed-off-by: Ying Xue <ying.xue@windriver.com>
Tested-by: Tero Aho <Tero.Aho@coriant.com>
Reviewed-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 9 insertions, 0 deletions

diff --git a/net/tipc/core.h b/net/tipc/core.h
index 106e8150c3a6..4fb113397e7b 100644
--- a/net/tipc/core.h
+++ b/net/tipc/core.h
@@ -59,6 +59,8 @@
 #include <linux/etherdevice.h>
 #include <net/netns/generic.h>
 
+#include "node.h"
+
 #define TIPC_MOD_VER "2.0.0"
 
 int tipc_snprintf(char *buf, int len, const char *fmt, ...);
@@ -78,6 +80,13 @@ extern int tipc_random __read_mostly;
 
 struct tipc_net {
 	int net_id;
+
+	/* Node table and node list */
+	spinlock_t node_list_lock;
+	struct hlist_head node_htable[NODE_HTABLE_SIZE];
+	struct list_head node_list;
+	u32 num_nodes;
+	u32 num_links;
 };
 
 #ifdef CONFIG_SYSCTL