include/net/irda/irmod.h

   1 /*********************************************************************
   2  *
   3  * Filename:      irmod.h
   4  * Version:       0.3
   5  * Description:   IrDA module and utilities functions
   6  * Status:        Experimental.
   7  * Author:        Dag Brattli <dagb@cs.uit.no>
   8  * Created at:    Mon Dec 15 13:58:52 1997
   9  * Modified at:   Fri Jan 28 13:15:24 2000
  10  * Modified by:   Dag Brattli <dagb@cs.uit.no>
  11  *
  12  *     Copyright (c) 1998-2000 Dag Brattli, All Rights Reserved.
  13  *     Copyright (c) 2000-2002 Jean Tourrilhes <jt@hpl.hp.com>
  14  *
  15  *     This program is free software; you can redistribute it and/or
  16  *     modify it under the terms of the GNU General Public License as
  17  *     published by the Free Software Foundation; either version 2 of
  18  *     the License, or (at your option) any later version.
  19  *
  20  *     Neither Dag Brattli nor University of Tromsø admit liability nor
  21  *     provide warranty for any of this software. This material is
  22  *     provided "AS-IS" and at no charg.
  23  *
  24  ********************************************************************/
  25
  26 #ifndef IRMOD_H
  27 #define IRMOD_H
  28
  29 /* Misc status information */
  30 typedef enum {
  31         STATUS_OK,
  32         STATUS_ABORTED,
  33         STATUS_NO_ACTIVITY,
  34         STATUS_NOISY,
  35         STATUS_REMOTE,
  36 } LINK_STATUS;
  37
  38 typedef enum {
  39         LOCK_NO_CHANGE,
  40         LOCK_LOCKED,
  41         LOCK_UNLOCKED,
  42 } LOCK_STATUS;
  43
  44 typedef enum { FLOW_STOP, FLOW_START } LOCAL_FLOW;
  45
  46 /*
  47  *  IrLMP disconnect reasons. The order is very important, since they
  48  *  correspond to disconnect reasons sent in IrLMP disconnect frames, so
  49  *  please do not touch :-)
  50  */
  51 typedef enum {
  52         LM_USER_REQUEST = 1,  /* User request */
  53         LM_LAP_DISCONNECT,    /* Unexpected IrLAP disconnect */
  54         LM_CONNECT_FAILURE,   /* Failed to establish IrLAP connection */
  55         LM_LAP_RESET,         /* IrLAP reset */
  56         LM_INIT_DISCONNECT,   /* Link Management initiated disconnect */
  57         LM_LSAP_NOTCONN,      /* Data delivered on unconnected LSAP */
  58         LM_NON_RESP_CLIENT,   /* Non responsive LM-MUX client */
  59         LM_NO_AVAIL_CLIENT,   /* No available LM-MUX client */
  60         LM_CONN_HALF_OPEN,    /* Connection is half open */
  61         LM_BAD_SOURCE_ADDR,   /* Illegal source address (i.e 0x00) */
  62 } LM_REASON;
  63 #define LM_UNKNOWN 0xff       /* Unspecified disconnect reason */
  64
  65 /* A few forward declarations (to make compiler happy) */
  66 struct qos_info;                /* in <net/irda/qos.h> */
  67
  68 /*
  69  *  Notify structure used between transport and link management layers
  70  */
  71 typedef struct {
  72         int (*data_indication)(void *priv, void *sap, struct sk_buff *skb);
  73         int (*udata_indication)(void *priv, void *sap, struct sk_buff *skb);
  74         void (*connect_confirm)(void *instance, void *sap,
  75                                 struct qos_info *qos, __u32 max_sdu_size,
  76                                 __u8 max_header_size, struct sk_buff *skb);
  77         void (*connect_indication)(void *instance, void *sap,
  78                                    struct qos_info *qos, __u32 max_sdu_size,
  79                                    __u8 max_header_size, struct sk_buff *skb);
  80         void (*disconnect_indication)(void *instance, void *sap,
  81                                       LM_REASON reason, struct sk_buff *);
  82         void (*flow_indication)(void *instance, void *sap, LOCAL_FLOW flow);
  83         void (*status_indication)(void *instance,
  84                                   LINK_STATUS link, LOCK_STATUS lock);
  85         void *instance; /* Layer instance pointer */
  86         char name[16];  /* Name of layer */
  87 } notify_t;
  88
  89 #define NOTIFY_MAX_NAME 16
  90
  91 /* Zero the notify structure */
  92 void irda_notify_init(notify_t *notify);
  93
  94 /* Locking wrapper - Note the inverted logic on irda_lock().
  95  * Those function basically return false if the lock is already in the
  96  * position you want to set it. - Jean II */
  97 #define irda_lock(lock)         (! test_and_set_bit(0, (void *) (lock)))
  98 #define irda_unlock(lock)       (test_and_clear_bit(0, (void *) (lock)))
  99
 100 #endif /* IRMOD_H */
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