include/net/irda/irlap_event.h

   1 /*********************************************************************
   2  *
   3  *
   4  * Filename:      irlap_event.h
   5  * Version:       0.1
   6  * Description:
   7  * Status:        Experimental.
   8  * Author:        Dag Brattli <dagb@cs.uit.no>
   9  * Created at:    Sat Aug 16 00:59:29 1997
  10  * Modified at:   Tue Dec 21 11:20:30 1999
  11  * Modified by:   Dag Brattli <dagb@cs.uit.no>
  12  *
  13  *     Copyright (c) 1998-1999 Dag Brattli <dagb@cs.uit.no>,
  14  *     All Rights Reserved.
  15  *     Copyright (c) 2000-2001 Jean Tourrilhes <jt@hpl.hp.com>
  16  *
  17  *     This program is free software; you can redistribute it and/or
  18  *     modify it under the terms of the GNU General Public License as
  19  *     published by the Free Software Foundation; either version 2 of
  20  *     the License, or (at your option) any later version.
  21  *
  22  *     This program is distributed in the hope that it will be useful,
  23  *     but WITHOUT ANY WARRANTY; without even the implied warranty of
  24  *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  25  *     GNU General Public License for more details.
  26  *
  27  *     You should have received a copy of the GNU General Public License
  28  *     along with this program; if not, write to the Free Software
  29  *     Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  30  *     MA 02111-1307 USA
  31  *
  32  ********************************************************************/
  33
  34 #ifndef IRLAP_EVENT_H
  35 #define IRLAP_EVENT_H
  36
  37 #include <net/irda/irda.h>
  38 #include <net/irda/discovery.h>
  39
  40 struct irlap_cb;
  41
  42 /* IrLAP States */
  43 typedef enum {
  44         LAP_NDM,         /* Normal disconnected mode */
  45         LAP_QUERY,
  46         LAP_REPLY,
  47         LAP_CONN,        /* Connect indication */
  48         LAP_SETUP,       /* Setting up connection */
  49         LAP_OFFLINE,     /* A really boring state */
  50         LAP_XMIT_P,
  51         LAP_PCLOSE,
  52         LAP_NRM_P,       /* Normal response mode as primary */
  53         LAP_RESET_WAIT,
  54         LAP_RESET,
  55         LAP_NRM_S,       /* Normal response mode as secondary */
  56         LAP_XMIT_S,
  57         LAP_SCLOSE,
  58         LAP_RESET_CHECK,
  59 } IRLAP_STATE;
  60
  61 /* IrLAP Events */
  62 typedef enum {
  63         /* Services events */
  64         DISCOVERY_REQUEST,
  65         CONNECT_REQUEST,
  66         CONNECT_RESPONSE,
  67         DISCONNECT_REQUEST,
  68         DATA_REQUEST,
  69         RESET_REQUEST,
  70         RESET_RESPONSE,
  71
  72         /* Send events */
  73         SEND_I_CMD,
  74         SEND_UI_FRAME,
  75
  76         /* Receive events */
  77         RECV_DISCOVERY_XID_CMD,
  78         RECV_DISCOVERY_XID_RSP,
  79         RECV_SNRM_CMD,
  80         RECV_TEST_CMD,
  81         RECV_TEST_RSP,
  82         RECV_UA_RSP,
  83         RECV_DM_RSP,
  84         RECV_RD_RSP,
  85         RECV_I_CMD,
  86         RECV_I_RSP,
  87         RECV_UI_FRAME,
  88         RECV_FRMR_RSP,
  89         RECV_RR_CMD,
  90         RECV_RR_RSP,
  91         RECV_RNR_CMD,
  92         RECV_RNR_RSP,
  93         RECV_REJ_CMD,
  94         RECV_REJ_RSP,
  95         RECV_SREJ_CMD,
  96         RECV_SREJ_RSP,
  97         RECV_DISC_CMD,
  98
  99         /* Timer events */
 100         SLOT_TIMER_EXPIRED,
 101         QUERY_TIMER_EXPIRED,
 102         FINAL_TIMER_EXPIRED,
 103         POLL_TIMER_EXPIRED,
 104         DISCOVERY_TIMER_EXPIRED,
 105         WD_TIMER_EXPIRED,
 106         BACKOFF_TIMER_EXPIRED,
 107         MEDIA_BUSY_TIMER_EXPIRED,
 108 } IRLAP_EVENT;
 109
 110 /*
 111  *  Various things used by the IrLAP state machine
 112  */
 113 struct irlap_info {
 114         __u8 caddr;   /* Connection address */
 115         __u8 control; /* Frame type */
 116         __u8 cmd;
 117
 118         __u32 saddr;
 119         __u32 daddr;
 120
 121         int pf;        /* Poll/final bit set */
 122
 123         __u8  nr;      /* Sequence number of next frame expected */
 124         __u8  ns;      /* Sequence number of frame sent */
 125
 126         int  S;        /* Number of slots */
 127         int  slot;     /* Random chosen slot */
 128         int  s;        /* Current slot */
 129
 130         discovery_t *discovery; /* Discovery information */
 131 };
 132
 133 extern const char *irlap_state[];
 134
 135 void irlap_do_event(struct irlap_cb *self, IRLAP_EVENT event,
 136                     struct sk_buff *skb, struct irlap_info *info);
 137 void irlap_print_event(IRLAP_EVENT event);
 138
 139 extern int irlap_qos_negotiate(struct irlap_cb *self, struct sk_buff *skb);
 140
 141 #endif