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/*********************************************************************
*
* Filename: irlmp.h
* Version: 0.9
* Description: IrDA Link Management Protocol (LMP) layer
* Status: Experimental.
* Author: Dag Brattli <dagb@cs.uit.no>
* Created at: Sun Aug 17 20:54:32 1997
* Modified at: Fri Apr 23 09:15:07 1999
* Modified by: Dag Brattli <dagb@cs.uit.no>
*
* Copyright (c) 1998 Dag Brattli <dagb@cs.uit.no>, All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* Neither Dag Brattli nor University of Tromsø admit liability nor
* provide warranty for any of this software. This material is
* provided "AS-IS" and at no charge.
*
********************************************************************/
#ifndef IRLMP_H
#define IRLMP_H
#include <asm/param.h> /* for HZ */
#include <linux/config.h>
#include <linux/types.h>
#include <net/irda/irda.h>
#include <net/irda/qos.h>
#include <net/irda/irlap.h>
#include <net/irda/irlmp_event.h>
#include <net/irda/irqueue.h>
#include <net/irda/discovery.h>
/* LSAP-SEL's */
#define LSAP_MASK 0x7f
#define LSAP_IAS 0x00
#define LSAP_ANY 0xff
#define DEV_ADDR_ANY 0xffffffff
/* Predefined LSAPs used by the various servers */
#define TSAP_IRLAN 0x05
#define LSAP_IRLPT 0x06
#define TSAP_IROBEX 0x07
#define TSAP_IRCOMM 0x08
#define LMP_HEADER 2 /* Dest LSAP + Source LSAP */
#define LMP_CONTROL_HEADER 4
#define LMP_MAX_HEADER (LAP_HEADER+LMP_HEADER)
#define LM_MAX_CONNECTIONS 10
#define LM_IDLE_TIMEOUT 2*HZ /* 2 seconds for now */
typedef enum {
S_PNP,
S_PDA,
S_COMPUTER,
S_PRINTER,
S_MODEM,
S_FAX,
S_LAN,
S_TELEPHONY,
S_COMM,
S_OBEX,
S_ANY,
S_END,
} SERVICE;
typedef void (*DISCOVERY_CALLBACK1) (discovery_t *);
typedef void (*DISCOVERY_CALLBACK2) (hashbin_t *);
typedef struct {
QUEUE queue; /* Must be first */
__u16 hints; /* Hint bits */
} irlmp_service_t;
typedef struct {
QUEUE queue; /* Must be first */
__u16 hint_mask;
DISCOVERY_CALLBACK1 callback1;
DISCOVERY_CALLBACK2 callback2;
} irlmp_client_t;
struct lap_cb; /* Forward decl. */
/*
* Information about each logical LSAP connection
*/
struct lsap_cb {
QUEUE queue; /* Must be first */
int magic;
int connected;
int persistent;
struct irda_statistics stats;
__u8 slsap_sel; /* Source (this) LSAP address */
__u8 dlsap_sel; /* Destination LSAP address (if connected) */
struct sk_buff *tmp_skb; /* Store skb here while connecting */
struct timer_list watchdog_timer;
IRLMP_STATE lsap_state; /* Connection state */
struct notify_t notify; /* Indication/Confirm entry points */
struct qos_info qos; /* QoS for this connection */
struct lap_cb *lap; /* Pointer to LAP connection structure */
};
/*
* Information about each registred IrLAP layer
*/
struct lap_cb {
QUEUE queue; /* Must be first */
int magic;
int reason; /* LAP disconnect reason */
IRLMP_STATE lap_state;
struct irlap_cb *irlap; /* Instance of IrLAP layer */
hashbin_t *lsaps; /* LSAP associated with this link */
__u8 caddr; /* Connection address */
__u32 saddr; /* Source device address */
__u32 daddr; /* Destination device address */
struct qos_info *qos; /* LAP QoS for this session */
struct timer_list idle_timer;
};
/*
* Used for caching the last slsap->dlsap->handle mapping
*/
typedef struct {
int valid;
__u8 slsap_sel;
__u8 dlsap_sel;
struct lsap_cb *lsap;
} CACHE_ENTRY;
/*
* Main structure for IrLMP
*/
struct irlmp_cb {
int magic;
__u8 conflict_flag;
discovery_t discovery_cmd; /* Discovery command to use by IrLAP */
discovery_t discovery_rsp; /* Discovery response to use by IrLAP */
int free_lsap_sel;
#ifdef CONFIG_IRDA_CACHE_LAST_LSAP
CACHE_ENTRY cache; /* Caching last slsap->dlsap->handle mapping */
#endif
struct timer_list discovery_timer;
hashbin_t *links; /* IrLAP connection table */
hashbin_t *unconnected_lsaps;
hashbin_t *clients;
hashbin_t *services;
hashbin_t *cachelog;
int running;
spinlock_t lock;
__u16_host_order hints; /* Hint bits */
};
/* Prototype declarations */
int irlmp_init(void);
void irlmp_cleanup(void);
struct lsap_cb *irlmp_open_lsap( __u8 slsap, struct notify_t *notify);
void irlmp_close_lsap( struct lsap_cb *self);
__u16 irlmp_service_to_hint(int service);
__u32 irlmp_register_service(__u16 hints);
int irlmp_unregister_service(__u32 handle);
__u32 irlmp_register_client(__u16 hint_mask, DISCOVERY_CALLBACK1 callback1,
DISCOVERY_CALLBACK2 callback2);
int irlmp_unregister_client(__u32 handle);
int irlmp_update_client(__u32 handle, __u16 hint_mask,
DISCOVERY_CALLBACK1, DISCOVERY_CALLBACK2);
void irlmp_register_link(struct irlap_cb *, __u32 saddr, struct notify_t *);
void irlmp_unregister_link(__u32 saddr);
int irlmp_connect_request(struct lsap_cb *, __u8 dlsap_sel,
__u32 saddr, __u32 daddr,
struct qos_info *, struct sk_buff *);
void irlmp_connect_indication(struct lsap_cb *self, struct sk_buff *skb);
void irlmp_connect_response(struct lsap_cb *, struct sk_buff *);
void irlmp_connect_confirm(struct lsap_cb *, struct sk_buff *);
struct lsap_cb *irlmp_dup(struct lsap_cb *self, void *instance);
void irlmp_disconnect_indication(struct lsap_cb *self, LM_REASON reason,
struct sk_buff *userdata);
void irlmp_disconnect_request(struct lsap_cb *, struct sk_buff *userdata);
void irlmp_discovery_confirm(hashbin_t *discovery_log);
void irlmp_discovery_request(int nslots);
void irlmp_do_discovery(int nslots);
discovery_t *irlmp_get_discovery_response(void);
void irlmp_data_request(struct lsap_cb *, struct sk_buff *);
inline void irlmp_udata_request(struct lsap_cb *, struct sk_buff *);
inline void irlmp_data_indication(struct lsap_cb *, struct sk_buff *);
inline void irlmp_udata_indication(struct lsap_cb *, struct sk_buff *);
void irlmp_status_request(void);
void irlmp_status_indication(LINK_STATUS link, LOCK_STATUS lock);
int irlmp_slsap_inuse(__u8 slsap);
__u8 irlmp_find_free_slsap(void);
LM_REASON irlmp_convert_lap_reason(LAP_REASON);
__u32 irlmp_get_saddr(struct lsap_cb *self);
__u32 irlmp_get_daddr(struct lsap_cb *self);
extern char *lmp_reasons[];
extern int sysctl_discovery_slots;
extern int sysctl_discovery;
extern struct irlmp_cb *irlmp;
static inline hashbin_t *irlmp_get_cachelog(void) { return irlmp->cachelog; }
#endif
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