Merge branch 'upstream-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/linvil...

[pandora-kernel.git] / net / tipc / core.h

diff --git a/net/tipc/core.h b/net/tipc/core.h
index b69b60b..4638947 100644 (file)
--- a/net/tipc/core.h
+++ b/net/tipc/core.h
@@ -2,7 +2,7 @@
  * net/tipc/core.h: Include file for TIPC global declarations
  * 
  * Copyright (c) 2005-2006, Ericsson AB
- * Copyright (c) 2005, Wind River Systems
+ * Copyright (c) 2005-2006, Wind River Systems
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -37,6 +37,11 @@
 #ifndef _TIPC_CORE_H
 #define _TIPC_CORE_H
 
+#include <linux/tipc.h>
+#include <linux/tipc_config.h>
+#include <net/tipc/tipc_msg.h>
+#include <net/tipc/tipc_port.h>
+#include <net/tipc/tipc_bearer.h>
 #include <net/tipc/tipc.h>
 #include <linux/types.h>
 #include <linux/kernel.h>
@@ -60,9 +65,9 @@
 #define assert(i)  BUG_ON(!(i))
 
 struct tipc_msg;
-extern struct print_buf *CONS, *LOG;
-extern struct print_buf *TEE(struct print_buf *, struct print_buf *);
-void msg_print(struct print_buf*,struct tipc_msg *,const char*);
+extern struct print_buf *TIPC_NULL, *TIPC_CONS, *TIPC_LOG;
+extern struct print_buf *TIPC_TEE(struct print_buf *, struct print_buf *);
+void tipc_msg_print(struct print_buf*,struct tipc_msg *,const char*);
 void tipc_printf(struct print_buf *, const char *fmt, ...);
 void tipc_dump(struct print_buf*,const char *fmt, ...);
 
@@ -78,9 +83,9 @@ void tipc_dump(struct print_buf*,const char *fmt, ...);
 #define warn(fmt, arg...) tipc_printf(TIPC_OUTPUT, KERN_WARNING "TIPC: " fmt, ## arg)
 #define info(fmt, arg...) tipc_printf(TIPC_OUTPUT, KERN_NOTICE "TIPC: " fmt, ## arg)
 
-#define dbg(fmt, arg...)  do {if (DBG_OUTPUT) tipc_printf(DBG_OUTPUT, fmt, ## arg);} while(0)
-#define msg_dbg(msg, txt) do {if (DBG_OUTPUT) msg_print(DBG_OUTPUT, msg, txt);} while(0)
-#define dump(fmt, arg...) do {if (DBG_OUTPUT) tipc_dump(DBG_OUTPUT, fmt, ##arg);} while(0)
+#define dbg(fmt, arg...)  do {if (DBG_OUTPUT != TIPC_NULL) tipc_printf(DBG_OUTPUT, fmt, ## arg);} while(0)
+#define msg_dbg(msg, txt) do {if (DBG_OUTPUT != TIPC_NULL) tipc_msg_print(DBG_OUTPUT, msg, txt);} while(0)
+#define dump(fmt, arg...) do {if (DBG_OUTPUT != TIPC_NULL) tipc_dump(DBG_OUTPUT, fmt, ##arg);} while(0)
 
 
 /*     
@@ -89,27 +94,23 @@ void tipc_dump(struct print_buf*,const char *fmt, ...);
  * here, or on a per .c file basis, by redefining these symbols.  The following
  * print buffer options are available:
  *
- * NULL                        : Output to null print buffer (i.e. print nowhere)
- * CONS                        : Output to system console
- * LOG                 : Output to TIPC log buffer 
- * &buf                : Output to user-defined buffer (struct print_buf *)
- * TEE(&buf_a,&buf_b)  : Output to two print buffers (eg. TEE(CONS,LOG) )
+ * TIPC_NULL              : null buffer (i.e. print nowhere)
+ * TIPC_CONS              : system console
+ * TIPC_LOG               : TIPC log buffer
+ * &buf                           : user-defined buffer (struct print_buf *)
+ * TIPC_TEE(&buf_a,&buf_b) : list of buffers (eg. TIPC_TEE(TIPC_CONS,TIPC_LOG))
  */
 
 #ifndef TIPC_OUTPUT
-#define TIPC_OUTPUT TEE(CONS,LOG)
+#define TIPC_OUTPUT TIPC_TEE(TIPC_CONS,TIPC_LOG)
 #endif
 
 #ifndef DBG_OUTPUT
-#define DBG_OUTPUT NULL
+#define DBG_OUTPUT TIPC_NULL
 #endif
 
 #else
 
-#ifndef DBG_OUTPUT
-#define DBG_OUTPUT NULL
-#endif
-
 /*
  * TIPC debug support not included:
  * - system messages are printed to system console
@@ -124,6 +125,19 @@ void tipc_dump(struct print_buf*,const char *fmt, ...);
 #define msg_dbg(msg,txt) do {} while (0)
 #define dump(fmt,arg...) do {} while (0)
 
+
+/*     
+ * TIPC_OUTPUT is defined to be the system console, while DBG_OUTPUT is
+ * the null print buffer.  Thes ensures that any system or debug messages 
+ * that are generated without using the above macros are handled correctly.
+ */
+
+#undef  TIPC_OUTPUT
+#define TIPC_OUTPUT TIPC_CONS
+
+#undef  DBG_OUTPUT
+#define DBG_OUTPUT TIPC_NULL
+
 #endif                   
 
 
@@ -162,10 +176,10 @@ extern atomic_t tipc_user_count;
  * Routines available to privileged subsystems
  */
 
-extern int  start_core(void);
-extern void stop_core(void);
-extern int  start_net(void);
-extern void stop_net(void);
+extern int  tipc_core_start(void);
+extern void tipc_core_stop(void);
+extern int  tipc_core_start_net(void);
+extern void tipc_core_stop_net(void);
 
 static inline int delimit(int val, int min, int max)
 {
@@ -183,7 +197,7 @@ static inline int delimit(int val, int min, int max)
 
 typedef void (*Handler) (unsigned long);
 
-u32 k_signal(Handler routine, unsigned long argument);
+u32 tipc_k_signal(Handler routine, unsigned long argument);
 
 /**
  * k_init_timer - initialize a timer
@@ -261,11 +275,15 @@ static inline void k_term_timer(struct timer_list *timer)
 /*
  * TIPC message buffer code
  *
- * TIPC message buffer headroom leaves room for 14 byte Ethernet header, 
+ * TIPC message buffer headroom reserves space for a link-level header
+ * (in case the message is sent off-node),
  * while ensuring TIPC header is word aligned for quicker access
+ *
+ * The largest header currently supported is 18 bytes, which is used when
+ * the standard 14 byte Ethernet header has 4 added bytes for VLAN info
  */
 
-#define BUF_HEADROOM 16u 
+#define BUF_HEADROOM 20u
 
 struct tipc_skb_cb {
        void *handle;
@@ -283,7 +301,10 @@ static inline struct tipc_msg *buf_msg(struct sk_buff *skb)
  * buf_acquire - creates a TIPC message buffer
  * @size: message size (including TIPC header)
  *
- * Returns a new buffer.  Space is reserved for a data link header.
+ * Returns a new buffer with data pointers set to the specified size.
+ * 
+ * NOTE: Headroom is reserved to allow prepending of a data link header.
+ *       There may also be unrequested tailroom present at the buffer's end.
  */
 
 static inline struct sk_buff *buf_acquire(u32 size)
@@ -304,7 +325,7 @@ static inline struct sk_buff *buf_acquire(u32 size)
  * buf_discard - frees a TIPC message buffer
  * @skb: message buffer
  *
- * Frees a new buffer.  If passed NULL, just returns.
+ * Frees a message buffer.  If passed NULL, just returns.
  */
 
 static inline void buf_discard(struct sk_buff *skb)