llc.h | Explore in Territory

#ifndef LLC_H
#define LLC_H
/*
 * 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/if.h>
#include <linux/if_ether.h>
#include <linux/list.h>
#include <linux/spinlock.h>
#include <linux/rculist_nulls.h>
#include <linux/hash.h>
#include <linux/jhash.h>

#include <linux/atomic.h>

struct net_device;
struct packet_type;
struct sk_buff;

struct llc_addr { … };

#define LLC_SAP_STATE_INACTIVE …
#define LLC_SAP_STATE_ACTIVE …

#define LLC_SK_DEV_HASH_BITS …
#define LLC_SK_DEV_HASH_ENTRIES …

#define LLC_SK_LADDR_HASH_BITS …
#define LLC_SK_LADDR_HASH_ENTRIES …

/**
 * struct llc_sap - Defines the SAP component
 *
 * @station - station this sap belongs to
 * @state - sap state
 * @p_bit - only lowest-order bit used
 * @f_bit - only lowest-order bit used
 * @laddr - SAP value in this 'lsap'
 * @node - entry in station sap_list
 * @sk_list - LLC sockets this one manages
 */
struct llc_sap { … };

static inline
struct hlist_head *llc_sk_dev_hash(struct llc_sap *sap, int ifindex)
{ … }

static inline
u32 llc_sk_laddr_hashfn(struct llc_sap *sap, const struct llc_addr *laddr)
{ … }

static inline
struct hlist_nulls_head *llc_sk_laddr_hash(struct llc_sap *sap,
					   const struct llc_addr *laddr)
{ … }

#define LLC_DEST_INVALID …
#define LLC_DEST_SAP …
#define LLC_DEST_CONN …

extern struct list_head llc_sap_list;

int llc_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt,
	    struct net_device *orig_dev);

int llc_mac_hdr_init(struct sk_buff *skb, const unsigned char *sa,
		     const unsigned char *da);

void llc_add_pack(int type,
		  void (*handler)(struct llc_sap *sap, struct sk_buff *skb));
void llc_remove_pack(int type);

void llc_set_station_handler(void (*handler)(struct sk_buff *skb));

struct llc_sap *llc_sap_open(unsigned char lsap,
			     int (*rcv)(struct sk_buff *skb,
					struct net_device *dev,
					struct packet_type *pt,
					struct net_device *orig_dev));
static inline void llc_sap_hold(struct llc_sap *sap)
{ … }

static inline bool llc_sap_hold_safe(struct llc_sap *sap)
{ … }

void llc_sap_close(struct llc_sap *sap);

static inline void llc_sap_put(struct llc_sap *sap)
{ … }

struct llc_sap *llc_sap_find(unsigned char sap_value);

int llc_build_and_send_ui_pkt(struct llc_sap *sap, struct sk_buff *skb,
			      const unsigned char *dmac, unsigned char dsap);

void llc_sap_handler(struct llc_sap *sap, struct sk_buff *skb);
void llc_conn_handler(struct llc_sap *sap, struct sk_buff *skb);

void llc_station_init(void);
void llc_station_exit(void);

#ifdef CONFIG_PROC_FS
int llc_proc_init(void);
void llc_proc_exit(void);
#else
#define llc_proc_init …
#define llc_proc_exit …
#endif /* CONFIG_PROC_FS */
#ifdef CONFIG_SYSCTL
int llc_sysctl_init(void);
void llc_sysctl_exit(void);

extern int sysctl_llc2_ack_timeout;
extern int sysctl_llc2_busy_timeout;
extern int sysctl_llc2_p_timeout;
extern int sysctl_llc2_rej_timeout;
#else
#define llc_sysctl_init …
#define llc_sysctl_exit …
#endif /* CONFIG_SYSCTL */
#endif /* LLC_H */
linux/include/net/llc.h
