1 files changed, 51 insertions, 37 deletions

diff --git a/net/tipc/node.h b/net/tipc/node.h
index 7cbb8cec1a93..9087063793f2 100644
--- a/net/tipc/node.h
+++ b/net/tipc/node.h
@@ -47,62 +47,73 @@
  */
 #define INVALID_NODE_SIG 0x10000
 
-/* Flags used to block (re)establishment of contact with a neighboring node */
-#define WAIT_PEER_DOWN  0x0001  /* wait to see that peer's links are down */
-#define WAIT_NAMES_GONE 0x0002  /* wait for peer's publications to be purged */
-#define WAIT_NODE_DOWN  0x0004  /* wait until peer node is declared down */
+/* Flags used to take different actions according to flag type
+ * TIPC_WAIT_PEER_LINKS_DOWN: wait to see that peer's links are down
+ * TIPC_WAIT_OWN_LINKS_DOWN: wait until peer node is declared down
+ * TIPC_NOTIFY_NODE_DOWN: notify node is down
+ * TIPC_NOTIFY_NODE_UP: notify node is up
+ */
+enum {
+        TIPC_WAIT_PEER_LINKS_DOWN       = (1 << 1),
+        TIPC_WAIT_OWN_LINKS_DOWN        = (1 << 2),
+        TIPC_NOTIFY_NODE_DOWN           = (1 << 3),
+        TIPC_NOTIFY_NODE_UP             = (1 << 4)
+};
+
+/**
+ * struct tipc_node_bclink - TIPC node bclink structure
+ * @acked: sequence # of last outbound b'cast message acknowledged by node
+ * @last_in: sequence # of last in-sequence b'cast message received from node
+ * @last_sent: sequence # of last b'cast message sent by node
+ * @oos_state: state tracker for handling OOS b'cast messages
+ * @deferred_size: number of OOS b'cast messages in deferred queue
+ * @deferred_head: oldest OOS b'cast message received from node
+ * @deferred_tail: newest OOS b'cast message received from node
+ * @reasm_buf: broadcast reassembly queue head from node
+ * @recv_permitted: true if node is allowed to receive b'cast messages
+ */
+struct tipc_node_bclink {
+        u32 acked;
+        u32 last_in;
+        u32 last_sent;
+        u32 oos_state;
+        u32 deferred_size;
+        struct sk_buff *deferred_head;
+        struct sk_buff *deferred_tail;
+        struct sk_buff *reasm_buf;
+        bool recv_permitted;
+};
 
 /**
  * struct tipc_node - TIPC node structure
  * @addr: network address of node
  * @lock: spinlock governing access to structure
  * @hash: links to adjacent nodes in unsorted hash chain
- * @list: links to adjacent nodes in sorted list of cluster's nodes
- * @nsub: list of "node down" subscriptions monitoring node
  * @active_links: pointers to active links to node
  * @links: pointers to all links to node
+ * @action_flags: bit mask of different types of node actions
+ * @bclink: broadcast-related info
+ * @list: links to adjacent nodes in sorted list of cluster's nodes
  * @working_links: number of working links to node (both active and standby)
- * @block_setup: bit mask of conditions preventing link establishment to node
  * @link_cnt: number of links to node
  * @signature: node instance identifier
- * @bclink: broadcast-related info
+ * @nsub: list of "node down" subscriptions monitoring node
  * @rcu: rcu struct for tipc_node
- *    @acked: sequence # of last outbound b'cast message acknowledged by node
- *    @last_in: sequence # of last in-sequence b'cast message received from node
- *    @last_sent: sequence # of last b'cast message sent by node
- *    @oos_state: state tracker for handling OOS b'cast messages
- *    @deferred_size: number of OOS b'cast messages in deferred queue
- *    @deferred_head: oldest OOS b'cast message received from node
- *    @deferred_tail: newest OOS b'cast message received from node
- *    @reasm_head: broadcast reassembly queue head from node
- *    @reasm_tail: last broadcast fragment received from node
- *    @recv_permitted: true if node is allowed to receive b'cast messages
  */
 struct tipc_node {
         u32 addr;
         spinlock_t lock;
         struct hlist_node hash;
-        struct list_head list;
-        struct list_head nsub;
         struct tipc_link *active_links[2];
         struct tipc_link *links[MAX_BEARERS];
+        unsigned int action_flags;
+        struct tipc_node_bclink bclink;
+        struct list_head list;
         int link_cnt;
         int working_links;
-        int block_setup;
         u32 signature;
+        struct list_head nsub;
         struct rcu_head rcu;
-        struct {
-                u32 acked;
-                u32 last_in;
-                u32 last_sent;
-                u32 oos_state;
-                u32 deferred_size;
-                struct sk_buff *deferred_head;
-                struct sk_buff *deferred_tail;
-                struct sk_buff *reasm_head;
-                struct sk_buff *reasm_tail;
-                bool recv_permitted;
-        } bclink;
 };
 
 extern struct list_head tipc_node_list;
@@ -118,15 +129,18 @@ int tipc_node_active_links(struct tipc_node *n_ptr);
 int tipc_node_is_up(struct tipc_node *n_ptr);
 struct sk_buff *tipc_node_get_links(const void *req_tlv_area, int req_tlv_space);
 struct sk_buff *tipc_node_get_nodes(const void *req_tlv_area, int req_tlv_space);
+int tipc_node_get_linkname(u32 bearer_id, u32 node, char *linkname, size_t len);
+void tipc_node_unlock(struct tipc_node *node);
 
-static inline void tipc_node_lock(struct tipc_node *n_ptr)
+static inline void tipc_node_lock(struct tipc_node *node)
 {
-        spin_lock_bh(&n_ptr->lock);
+        spin_lock_bh(&node->lock);
 }
 
-static inline void tipc_node_unlock(struct tipc_node *n_ptr)
+static inline bool tipc_node_blocked(struct tipc_node *node)
 {
-        spin_unlock_bh(&n_ptr->lock);
+        return (node->action_flags & (TIPC_WAIT_PEER_LINKS_DOWN |
+                TIPC_NOTIFY_NODE_DOWN | TIPC_WAIT_OWN_LINKS_DOWN));
 }
 
 #endif