i386/linux/linux-2.3.21/include/net/irda/discovery.h

   1 /*********************************************************************
   2  *
   3  * Filename:      discovery.h
   4  * Version:
   5  * Description:
   6  * Status:        Experimental.
   7  * Author:        Dag Brattli <dagb@cs.uit.no>
   8  * Created at:    Tue Apr  6 16:53:53 1999
   9  * Modified at:   Mon Aug 23 09:26:24 1999
  10  * Modified by:   Dag Brattli <dagb@cs.uit.no>
  11  *
  12  *     Copyright (c) 1999 Dag Brattli, All Rights Reserved.
  13  *
  14  *     This program is free software; you can redistribute it and/or
  15  *     modify it under the terms of the GNU General Public License as
  16  *     published by the Free Software Foundation; either version 2 of
  17  *     the License, or (at your option) any later version.
  18  *
  19  *     This program is distributed in the hope that it will be useful,
  20  *     but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  22  *     GNU General Public License for more details.
  23  *
  24  *     You should have received a copy of the GNU General Public License
  25  *     along with this program; if not, write to the Free Software
  26  *     Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  27  *     MA 02111-1307 USA
  28  *
  29  ********************************************************************/
  30
  31 #ifndef DISCOVERY_H
  32 #define DISCOVERY_H
  33
  34 #include <asm/param.h>
  35
  36 #include <net/irda/irda.h>
  37 #include <net/irda/irqueue.h>
  38
  39 #define DISCOVERY_EXPIRE_TIMEOUT 6*HZ
  40 #define DISCOVERY_DEFAULT_SLOTS  0
  41
  42 #define NICKNAME_MAX_LEN 21
  43
  44 /*
  45  * The DISCOVERY structure is used for both discovery requests and responses
  46  */
  47 typedef struct {
  48         QUEUE queue;             /* Must be first! */
  49
  50         __u32      saddr;        /* Which link the device was discovered */
  51         __u32      daddr;        /* Remote device address */
  52         LAP_REASON condition;    /* More info about the discovery */
  53
  54         __u16_host_order hints;  /* Discovery hint bits */
  55         __u8       charset;      /* Encoding of nickname */
  56         char       nickname[22]; /* The name of the device (21 bytes + \0) */
  57         int        name_len;     /* Lenght of nickname */
  58
  59         int        gen_addr_bit; /* Need to generate a new device address? */
  60         int        nslots;       /* Number of slots to use when discovering */
  61         unsigned long timestamp; /* Time discovered */
  62 } discovery_t;
  63
  64 void irlmp_add_discovery(hashbin_t *cachelog, discovery_t *discovery);
  65 void irlmp_add_discovery_log(hashbin_t *cachelog, hashbin_t *log);
  66 void irlmp_expire_discoveries(hashbin_t *log, __u32 saddr, int force);
  67
  68 #endif