tipc: move bcast definitions to bcast.c

Currently, a number of structure and function definitions related
to the broadcast functionality are unnecessarily exposed in the file
bcast.h. This obscures the fact that the external interface towards
the broadcast link in fact is very narrow, and causes unnecessary
recompilations of other files when anything changes in those
definitions.

In this commit, we move as many of those definitions as is currently
possible to the file bcast.c.

We also rename the structure 'tipc_bclink' to 'tipc_bc_base', both
since the name does not correctly describe the contents of this
struct, and will do so even less in the future, and because we want
to use the term 'link' more appropriately in the functionality
introduced later in this series.

Finally, we rename a couple of functions, such as tipc_bclink_xmit()
and others that will be kept in the future, to include the term 'bcast'
instead.

There are no functional changes in this commit.

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

1 files changed, 11 insertions, 77 deletions

diff --git a/net/tipc/bcast.h b/net/tipc/bcast.h
index d74c69bcf60b..d379b0afe8e8 100644
--- a/net/tipc/bcast.h
+++ b/net/tipc/bcast.h
@@ -37,83 +37,17 @@
 #ifndef _TIPC_BCAST_H
 #define _TIPC_BCAST_H
 
-#include <linux/tipc_config.h>
-#include "link.h"
-#include "node.h"
-
-/**
- * struct tipc_bcbearer_pair - a pair of bearers used by broadcast link
- * @primary: pointer to primary bearer
- * @secondary: pointer to secondary bearer
- *
- * Bearers must have same priority and same set of reachable destinations
- * to be paired.
- */
-
-struct tipc_bcbearer_pair {
-	struct tipc_bearer *primary;
-	struct tipc_bearer *secondary;
-};
-
-#define	BCBEARER		MAX_BEARERS
-
-/**
- * struct tipc_bcbearer - bearer used by broadcast link
- * @bearer: (non-standard) broadcast bearer structure
- * @media: (non-standard) broadcast media structure
- * @bpairs: array of bearer pairs
- * @bpairs_temp: temporary array of bearer pairs used by tipc_bcbearer_sort()
- * @remains: temporary node map used by tipc_bcbearer_send()
- * @remains_new: temporary node map used tipc_bcbearer_send()
- *
- * Note: The fields labelled "temporary" are incorporated into the bearer
- * to avoid consuming potentially limited stack space through the use of
- * large local variables within multicast routines.  Concurrent access is
- * prevented through use of the spinlock "bclink_lock".
- */
-struct tipc_bcbearer {
-	struct tipc_bearer bearer;
-	struct tipc_media media;
-	struct tipc_bcbearer_pair bpairs[MAX_BEARERS];
-	struct tipc_bcbearer_pair bpairs_temp[TIPC_MAX_LINK_PRI + 1];
-	struct tipc_node_map remains;
-	struct tipc_node_map remains_new;
-};
-
-/**
- * struct tipc_bclink - link used for broadcast messages
- * @lock: spinlock governing access to structure
- * @link: (non-standard) broadcast link structure
- * @node: (non-standard) node structure representing b'cast link's peer node
- * @bcast_nodes: map of broadcast-capable nodes
- * @retransmit_to: node that most recently requested a retransmit
- *
- * Handles sequence numbering, fragmentation, bundling, etc.
- */
-struct tipc_bclink {
-	spinlock_t lock;
-	struct tipc_link link;
-	struct tipc_node node;
-	struct sk_buff_head arrvq;
-	struct sk_buff_head inputq;
-	struct tipc_node_map bcast_nodes;
-	struct tipc_node *retransmit_to;
-};
+#include "core.h"
 
 struct tipc_node;
-extern const char tipc_bclink_name[];
+struct tipc_msg;
+struct tipc_nl_msg;
+struct tipc_node_map;
 
-/**
- * tipc_nmap_equal - test for equality of node maps
- */
-static inline int tipc_nmap_equal(struct tipc_node_map *nm_a,
-				  struct tipc_node_map *nm_b)
-{
-	return !memcmp(nm_a, nm_b, sizeof(*nm_a));
-}
+extern const char tipc_bclink_name[];
 
-int tipc_bclink_init(struct net *net);
-void tipc_bclink_stop(struct net *net);
+int tipc_bcast_init(struct net *net);
+void tipc_bcast_stop(struct net *net);
 void tipc_bclink_add_node(struct net *net, u32 addr);
 void tipc_bclink_remove_node(struct net *net, u32 addr);
 struct tipc_node *tipc_bclink_retransmit_to(struct net *tn);
@@ -123,12 +57,12 @@ u32  tipc_bclink_get_last_sent(struct net *net);
 u32  tipc_bclink_acks_missing(struct tipc_node *n_ptr);
 void tipc_bclink_update_link_state(struct tipc_node *node,
 				   u32 last_sent);
-int  tipc_bclink_reset_stats(struct net *net);
-int  tipc_bclink_set_queue_limits(struct net *net, u32 limit);
 void tipc_bcbearer_sort(struct net *net, struct tipc_node_map *nm_ptr,
 			u32 node, bool action);
-uint  tipc_bclink_get_mtu(void);
-int tipc_bclink_xmit(struct net *net, struct sk_buff_head *list);
+int  tipc_bclink_reset_stats(struct net *net);
+int  tipc_bclink_set_queue_limits(struct net *net, u32 limit);
+uint  tipc_bcast_get_mtu(void);
+int tipc_bcast_xmit(struct net *net, struct sk_buff_head *list);
 void tipc_bclink_wakeup_users(struct net *net);
 int tipc_nl_add_bc_link(struct net *net, struct tipc_nl_msg *msg);
 int tipc_nl_bc_link_set(struct net *net, struct nlattr *attrs[]);