/* * net/tipc/core.h: Include file for TIPC global declarations * * Copyright (c) 2005-2006, Ericsson AB * Copyright (c) 2005-2007, 2010-2011, Wind River Systems * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright *    notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright *    notice, this list of conditions and the following disclaimer in the *    documentation and/or other materials provided with the distribution. * 3. Neither the names of the copyright holders nor the names of its *    contributors may be used to endorse or promote products derived from *    this software without specific prior written permission. * * Alternatively, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2 as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #ifndef _TIPC_CORE_H#define _TIPC_CORE_H #include <linux/tipc.h>#include <linux/tipc_config.h>#include <linux/types.h>#include <linux/kernel.h>#include <linux/errno.h>#include <linux/mm.h>#include <linux/timer.h>#include <linux/string.h>#include <asm/uaccess.h>#include <linux/interrupt.h>#include <linux/atomic.h>#include <asm/hardirq.h>#include <linux/netdevice.h>#include <linux/in.h>#include <linux/list.h>#include <linux/slab.h>#include <linux/vmalloc.h>  #define TIPC_MOD_VER "2.0.0" struct tipc_msg;	/* msg.h */struct print_buf;	/* log.h */ /* * TIPC system monitoring code */ /* * TIPC's print buffer subsystem supports the following print buffers: * * TIPC_NULL : null buffer (i.e. print nowhere) * TIPC_CONS : system console * TIPC_LOG  : TIPC log buffer * &buf	     : user-defined buffer (struct print_buf *) * * Note: TIPC_LOG is configured to echo its output to the system console; *       user-defined buffers can be configured to do the same thing. */extern struct print_buf *const TIPC_NULL;extern struct print_buf *const TIPC_CONS;extern struct print_buf *const TIPC_LOG; void tipc_printf(struct print_buf *, const char *fmt, ...); /* * TIPC_OUTPUT is the destination print buffer for system messages. */#ifndef TIPC_OUTPUT#define TIPC_OUTPUT TIPC_LOG#endif #define err(fmt, arg...)  tipc_printf(TIPC_OUTPUT, \				      KERN_ERR "TIPC: " fmt, ## arg)#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) #ifdef CONFIG_TIPC_DEBUG /* * DBG_OUTPUT is the destination print buffer for debug messages. */#ifndef DBG_OUTPUT#define DBG_OUTPUT TIPC_LOG#endif #define dbg(fmt, arg...)  tipc_printf(DBG_OUTPUT, KERN_DEBUG fmt, ## arg); #define msg_dbg(msg, txt) tipc_msg_dbg(DBG_OUTPUT, msg, txt); void tipc_msg_dbg(struct print_buf *, struct tipc_msg *, const char *); #else #define dbg(fmt, arg...)	do {} while (0)#define msg_dbg(msg, txt)	do {} while (0) #define tipc_msg_dbg(buf, msg, txt) do {} while (0) #endif  /* * TIPC-specific error codes */#define ELINKCONG EAGAIN	/* link congestion <=> resource unavailable */ /* * Global configuration variables */extern u32 tipc_own_addr;extern int tipc_max_ports;extern int tipc_max_subscriptions;extern int tipc_max_publications;extern int tipc_net_id;extern int tipc_remote_management; /* * Other global variables */extern int tipc_random;extern const char tipc_alphabet[];  /* * Routines available to privileged subsystems */extern int tipc_core_start_net(unsigned long);extern int  tipc_handler_start(void);extern void tipc_handler_stop(void);extern int  tipc_netlink_start(void);extern void tipc_netlink_stop(void);extern int  tipc_socket_init(void);extern void tipc_socket_stop(void); /* * TIPC timer and signal code */typedef void (*Handler) (unsigned long); u32 tipc_k_signal(Handler routine, unsigned long argument); /** * k_init_timer - initialize a timer * @timer: pointer to timer structure * @routine: pointer to routine to invoke when timer expires * @argument: value to pass to routine when timer expires * * Timer must be initialized before use (and terminated when no longer needed). */static inline void k_init_timer(struct timer_list *timer, Handler routine,				unsigned long argument){	setup_timer(timer, routine, argument);} /** * k_start_timer - start a timer * @timer: pointer to timer structure * @msec: time to delay (in ms) * * Schedules a previously initialized timer for later execution. * If timer is already running, the new timeout overrides the previous request. * * To ensure the timer doesn't expire before the specified delay elapses, * the amount of delay is rounded up when converting to the jiffies * then an additional jiffy is added to account for the fact that * the starting time may be in the middle of the current jiffy. */static inline void k_start_timer(struct timer_list *timer, unsigned long msec){	mod_timer(timer, jiffies + msecs_to_jiffies(msec) + 1);} /** * k_cancel_timer - cancel a timer * @timer: pointer to timer structure * * Cancels a previously initialized timer. * Can be called safely even if the timer is already inactive. * * WARNING: Must not be called when holding locks required by the timer's *          timeout routine, otherwise deadlock can occur on SMP systems! */static inline void k_cancel_timer(struct timer_list *timer){	del_timer_sync(timer);} /** * k_term_timer - terminate a timer * @timer: pointer to timer structure * * Prevents further use of a previously initialized timer. * * WARNING: Caller must ensure timer isn't currently running. * * (Do not "enhance" this routine to automatically cancel an active timer, * otherwise deadlock can arise when a timeout routine calls k_term_timer.) */static inline void k_term_timer(struct timer_list *timer){} /* * TIPC message buffer code * * TIPC message buffer headroom reserves space for the worst-case * link-level device header (in case the message is sent off-node). * * Note: Headroom should be a multiple of 4 to ensure the TIPC header fields *       are word aligned for quicker access */#define BUF_HEADROOM LL_MAX_HEADER struct tipc_skb_cb {	void *handle;}; #define TIPC_SKB_CB(__skb) ((struct tipc_skb_cb *)&((__skb)->cb[0])) static inline struct tipc_msg *buf_msg(struct sk_buff *skb){	return (struct tipc_msg *)skb->data;} extern struct sk_buff *tipc_buf_acquire(u32 size); #endif