linux/net/llc/llc_core.c

/*
 * llc_core.c - Minimum needed routines for sap handling and module init/exit
 *
 * Copyright (c) 1997 by Procom Technology, Inc.
 * 		 2001-2003 by Arnaldo Carvalho de Melo <[email protected]>
 *
 * This program can be redistributed or modified under the terms of the
 * GNU General Public License as published by the Free Software Foundation.
 * This program is distributed without any warranty or implied warranty
 * of merchantability or fitness for a particular purpose.
 *
 * See the GNU General Public License for more details.
 */

#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/if_ether.h>
#include <linux/netdevice.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/init.h>
#include <net/net_namespace.h>
#include <net/llc.h>

LIST_HEAD(…);
static DEFINE_SPINLOCK(llc_sap_list_lock);

/**
 *	llc_sap_alloc - allocates and initializes sap.
 *
 *	Allocates and initializes sap.
 */
static struct llc_sap *llc_sap_alloc(void)
{ … }

static struct llc_sap *__llc_sap_find(unsigned char sap_value)
{ … }

/**
 *	llc_sap_find - searches a SAP in station
 *	@sap_value: sap to be found
 *
 *	Searches for a sap in the sap list of the LLC's station upon the sap ID.
 *	If the sap is found it will be refcounted and the user will have to do
 *	a llc_sap_put after use.
 *	Returns the sap or %NULL if not found.
 */
struct llc_sap *llc_sap_find(unsigned char sap_value)
{ … }

/**
 *	llc_sap_open - open interface to the upper layers.
 *	@lsap: SAP number.
 *	@func: rcv func for datalink protos
 *
 *	Interface function to upper layer. Each one who wants to get a SAP
 *	(for example NetBEUI) should call this function. Returns the opened
 *	SAP for success, NULL for failure.
 */
struct llc_sap *llc_sap_open(unsigned char lsap,
			     int (*func)(struct sk_buff *skb,
					 struct net_device *dev,
					 struct packet_type *pt,
					 struct net_device *orig_dev))
{ … }

/**
 *	llc_sap_close - close interface for upper layers.
 *	@sap: SAP to be closed.
 *
 *	Close interface function to upper layer. Each one who wants to
 *	close an open SAP (for example NetBEUI) should call this function.
 * 	Removes this sap from the list of saps in the station and then
 * 	frees the memory for this sap.
 */
void llc_sap_close(struct llc_sap *sap)
{ … }

static struct packet_type llc_packet_type __read_mostly = …;

static int __init llc_init(void)
{ … }

static void __exit llc_exit(void)
{ … }

module_init(…) …;
module_exit(llc_exit);

EXPORT_SYMBOL(…);
EXPORT_SYMBOL(…);
EXPORT_SYMBOL(…);
EXPORT_SYMBOL(…);

MODULE_LICENSE(…) …;
MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;