irlmp_event.h

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/*********************************************************************
 *                
 * Filename:      irlmp_event.h
 * Version:       0.1
 * Description:   IrDA-LMP event handling
 * Status:        Experimental.
 * Author:        Dag Brattli <dagb@cs.uit.no>
 * Created at:    Mon Aug  4 20:40:53 1997
 * Modified at:   Thu Jul  8 12:18:54 1999
 * Modified by:   Dag Brattli <dagb@cs.uit.no>
 * 
 *     Copyright (c) 1997, 1999 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_EVENT_H
#define IRLMP_EVENT_H

struct irlmp_cb;
struct lsap_cb;
struct lap_cb;

/* LAP states */
typedef enum {
        /* IrLAP connection control states */
        LAP_STANDBY,             /* No LAP connection */
        LAP_U_CONNECT,           /* Starting LAP connection */
        LAP_ACTIVE,              /* LAP connection is active */
} IRLMP_STATE;

/* LSAP connection control states */
typedef enum {
        LSAP_DISCONNECTED,        /* No LSAP connection */
        LSAP_CONNECT,             /* Connect indication from peer */
        LSAP_CONNECT_PEND,        /* Connect request from service user */
        LSAP_DATA_TRANSFER_READY, /* LSAP connection established */          
        LSAP_SETUP,               /* Trying to set up LSAP connection */
        LSAP_SETUP_PEND,          /* Request to start LAP connection */
} LSAP_STATE;

typedef enum {
        /* LSAP events */
        LM_CONNECT_REQUEST,
        LM_CONNECT_CONFIRM,
        LM_CONNECT_RESPONSE,
        LM_CONNECT_INDICATION,  
        
        LM_DISCONNECT_INDICATION,
        LM_DISCONNECT_REQUEST,

        LM_DATA_REQUEST,
        LM_UDATA_REQUEST,
        LM_DATA_INDICATION,
        LM_UDATA_INDICATION,

        LM_WATCHDOG_TIMEOUT,

        /* IrLAP events */
        LM_LAP_CONNECT_REQUEST,
        LM_LAP_CONNECT_INDICATION, 
        LM_LAP_CONNECT_CONFIRM,
        LM_LAP_DISCONNECT_INDICATION, 
        LM_LAP_DISCONNECT_REQUEST,
        LM_LAP_DISCOVERY_REQUEST,
        LM_LAP_DISCOVERY_CONFIRM,
        LM_LAP_IDLE_TIMEOUT,
} IRLMP_EVENT;

/*
 *  Information which is used by the current thread, when executing in the
 *  state machine.
 */
struct irlmp_event {
        IRLMP_EVENT *event;
        struct sk_buff *skb;

        __u8 hint;
        __u32 daddr;
        __u32 saddr;

        __u8 slsap;
        __u8 dlsap;

        int reason;

        discovery_t *discovery;
};

extern const char *irlmp_state[];
extern const char *irlsap_state[];

void irlmp_watchdog_timer_expired(void *data);
void irlmp_discovery_timer_expired(void *data);
void irlmp_idle_timer_expired(void *data);

void irlmp_next_station_state(IRLMP_STATE state);
void irlmp_next_lsap_state(struct lsap_cb *self, LSAP_STATE state);
void irlmp_next_lap_state(struct lap_cb *self, IRLMP_STATE state);

void irlmp_do_lap_event(struct lap_cb *self, IRLMP_EVENT event, 
                        struct sk_buff *skb);
int irlmp_do_lsap_event(struct lsap_cb *self, IRLMP_EVENT event, 
                        struct sk_buff *skb);

#endif /* IRLMP_EVENT_H */

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