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 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 discovery_t {
48 irda_queue_t q; /* 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 unsigned long first_timestamp; /* First time discovered */
63 } discovery_t;
64
65 void irlmp_add_discovery(hashbin_t *cachelog, discovery_t *discovery);
66 void irlmp_add_discovery_log(hashbin_t *cachelog, hashbin_t *log);
67 void irlmp_expire_discoveries(hashbin_t *log, __u32 saddr, int force);
68 struct irda_device_info *irlmp_copy_discoveries(hashbin_t *log, int *pn, __u16 mask);
69
70 #endif
71
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