tipc: rename functions related to link failover and improve comments

The functionality related to link addition and failover is unnecessarily
hard to understand and maintain. We try to improve this by renaming
some of the functions, at the same time adding or improving the
explanatory comments around them. Names such as "tipc_rcv()" etc. also
align better with what is used in other networking components.

The changes in this commit are purely cosmetic, no functional changes
are made.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Reviewed-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/tipc/link.h b/net/tipc/link.h
index 0636ca9..89ab89b 100644
--- a/net/tipc/link.h
+++ b/net/tipc/link.h
@@ -216,15 +216,20 @@
 			      struct tipc_bearer *b_ptr,
 			      const struct tipc_media_addr *media_addr);
 void tipc_link_delete(struct tipc_link *l_ptr);
-void tipc_link_changeover(struct tipc_link *l_ptr);
-void tipc_link_send_duplicate(struct tipc_link *l_ptr, struct tipc_link *dest);
+void tipc_link_failover_send_queue(struct tipc_link *l_ptr);
+void tipc_link_dup_send_queue(struct tipc_link *l_ptr,
+			      struct tipc_link *dest);
 void tipc_link_reset_fragments(struct tipc_link *l_ptr);
 int tipc_link_is_up(struct tipc_link *l_ptr);
 int tipc_link_is_active(struct tipc_link *l_ptr);
 void tipc_link_stop(struct tipc_link *l_ptr);
-struct sk_buff *tipc_link_cmd_config(const void *req_tlv_area, int req_tlv_space, u16 cmd);
-struct sk_buff *tipc_link_cmd_show_stats(const void *req_tlv_area, int req_tlv_space);
-struct sk_buff *tipc_link_cmd_reset_stats(const void *req_tlv_area, int req_tlv_space);
+struct sk_buff *tipc_link_cmd_config(const void *req_tlv_area,
+				     int req_tlv_space,
+				     u16 cmd);
+struct sk_buff *tipc_link_cmd_show_stats(const void *req_tlv_area,
+					 int req_tlv_space);
+struct sk_buff *tipc_link_cmd_reset_stats(const void *req_tlv_area,
+					  int req_tlv_space);
 void tipc_link_reset(struct tipc_link *l_ptr);
 int tipc_link_send(struct sk_buff *buf, u32 dest, u32 selector);
 void tipc_link_send_names(struct list_head *message_list, u32 dest);