1 /*
2  * The olsr.org Optimized Link-State Routing daemon (olsrd)
3  *
4  * (c) by the OLSR project
5  *
6  * See our Git repository to find out who worked on this file
7  * and thus is a copyright holder on it.
8  *
9  * All rights reserved.
10  *
11  * Redistribution and use in source and binary forms, with or without
12  * modification, are permitted provided that the following conditions
13  * are met:
14  *
15  * * Redistributions of source code must retain the above copyright
16  *   notice, this list of conditions and the following disclaimer.
17  * * Redistributions in binary form must reproduce the above copyright
18  *   notice, this list of conditions and the following disclaimer in
19  *   the documentation and/or other materials provided with the
20  *   distribution.
21  * * Neither the name of olsr.org, olsrd nor the names of its
22  *   contributors may be used to endorse or promote products derived
23  *   from this software without specific prior written permission.
24  *
25  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
26  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
27  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
28  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
29  * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
30  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
31  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
32  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
33  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
35  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36  * POSSIBILITY OF SUCH DAMAGE.
37  *
38  * Visit http://www.olsr.org for more information.
39  *
40  * If you find this software useful feel free to make a donation
41  * to the project. For more information see the website or contact
42  * the copyright holders.
43  *
44  */
45 
46 #ifndef _OLSR_MID
47 #define _OLSR_MID
48 
49 #include "olsr_types.h"
50 #include "hashing.h"
51 #include "mantissa.h"
52 #include "packet.h"
53 
54 struct mid_address {
55   union olsr_ip_addr alias;
56   struct mid_entry *main_entry;
57   struct mid_address *next_alias;
58   uint32_t vtime;
59 
60   /* These are for the reverse list */
61   struct mid_address *prev;
62   struct mid_address *next;
63 };
64 
65 /*
66  * Contains the main addr of a node and a list of aliases
67  */
68 struct mid_entry {
69   union olsr_ip_addr main_addr;
70   struct mid_address *aliases;
71   struct mid_entry *prev;
72   struct mid_entry *next;
73   struct timer_entry *mid_timer;
74 };
75 
76 #define OLSR_MID_JITTER 5       /* percent */
77 
78 extern struct mid_entry mid_set[HASHSIZE];
79 extern struct mid_address reverse_mid_set[HASHSIZE];
80 
81 int olsr_init_mid_set(void);
82 void olsr_delete_all_mid_entries(void);
83 void olsr_cleanup_mid(union olsr_ip_addr *);
84 void insert_mid_alias(union olsr_ip_addr *, const union olsr_ip_addr *, olsr_reltime);
85 union olsr_ip_addr *mid_lookup_main_addr(const union olsr_ip_addr *);
86 struct mid_address *mid_lookup_aliases(const union olsr_ip_addr *);
87 struct mid_entry *mid_lookup_entry_bymain(const union olsr_ip_addr *);
88 void olsr_print_mid_set(void);
89 int olsr_update_mid_table(const union olsr_ip_addr *, olsr_reltime);
90 void olsr_delete_mid_entry(struct mid_entry *);
91 bool olsr_input_mid(union olsr_message *, struct interface_olsr *, union olsr_ip_addr *);
92 
93 #endif /* _OLSR_MID */
94 
95 /*
96  * Local Variables:
97  * c-basic-offset: 2
98  * indent-tabs-mode: nil
99  * End:
100  */
101