tipc: add net dump to new netlink api

Add TIPC_NL_NET_GET command to the new tipc netlink API.

This command dumps the network id of the node.

Netlink logical layout of returned network data:
-> net
    -> id

Signed-off-by: Richard Alpe <richard.alpe@ericsson.com>
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Reviewed-by: Jon Maloy <jon.maloy@ericsson.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/uapi/linux/tipc_netlink.h b/include/uapi/linux/tipc_netlink.h
index 08a7933..dcfd420 100644
--- a/include/uapi/linux/tipc_netlink.h
+++ b/include/uapi/linux/tipc_netlink.h
@@ -53,6 +53,7 @@
 	TIPC_NL_MEDIA_GET,
 	TIPC_NL_MEDIA_SET,
 	TIPC_NL_NODE_GET,
+	TIPC_NL_NET_GET,
 
 	__TIPC_NL_CMD_MAX,
 	TIPC_NL_CMD_MAX = __TIPC_NL_CMD_MAX - 1
@@ -67,6 +68,7 @@
 	TIPC_NLA_LINK,			/* nest */
 	TIPC_NLA_MEDIA,			/* nest */
 	TIPC_NLA_NODE,			/* nest */
+	TIPC_NLA_NET,			/* nest */
 
 	__TIPC_NLA_MAX,
 	TIPC_NLA_MAX = __TIPC_NLA_MAX - 1
@@ -133,6 +135,15 @@
 	TIPC_NLA_NODE_MAX = __TIPC_NLA_NODE_MAX - 1
 };
 
+/* Net info */
+enum {
+	TIPC_NLA_NET_UNSPEC,
+	TIPC_NLA_NET_ID,		/* u32 */
+
+	__TIPC_NLA_NET_MAX,
+	TIPC_NLA_NET_MAX = __TIPC_NLA_NET_MAX - 1
+};
+
 /* Publication info */
 enum {
 	TIPC_NLA_PUBL_UNSPEC,