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: Tue Oct 5 10:05:10 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 (2*sysctl_discovery_timeout*HZ) 40 #define DISCOVERY_DEFAULT_SLOTS 0 41 42 /* Types of discovery */ 43 typedef enum { 44 DISCOVERY_LOG, /* What's in our discovery log */ 45 DISCOVERY_ACTIVE, /* Doing our own discovery on the medium */ 46 DISCOVERY_PASSIVE, /* Peer doing discovery on the medium */ 47 EXPIRY_TIMEOUT, /* Entry expired due to timeout */ 48 } DISCOVERY_MODE; 49 50 #define NICKNAME_MAX_LEN 21 51 52 /* 53 * The DISCOVERY structure is used for both discovery requests and responses 54 */ 55 typedef struct discovery_t { 56 irda_queue_t q; /* Must be first! */ 57 58 __u32 saddr; /* Which link the device was discovered */ 59 __u32 daddr; /* Remote device address */ 60 LAP_REASON condition; /* More info about the discovery */ 61 62 __u16_host_order hints; /* Discovery hint bits */ 63 __u8 charset; /* Encoding of nickname */ 64 char nickname[22]; /* The name of the device (21 bytes + \0) */ 65 int name_len; /* Lenght of nickname */ 66 67 int gen_addr_bit; /* Need to generate a new device address? */ 68 int nslots; /* Number of slots to use when discovering */ 69 unsigned long timestamp; /* Time discovered */ 70 unsigned long first_timestamp; /* First time discovered */ 71 } discovery_t; 72 73 void irlmp_add_discovery(hashbin_t *cachelog, discovery_t *discovery); 74 void irlmp_add_discovery_log(hashbin_t *cachelog, hashbin_t *log); 75 void irlmp_expire_discoveries(hashbin_t *log, __u32 saddr, int force); 76 struct irda_device_info *irlmp_copy_discoveries(hashbin_t *log, int *pn, __u16 mask); 77 78 #endif 79