Statistics
| Branch: | Revision:

iof-bird-daemon / proto / radv / radv.h @ 7152e5ef

History | View | Annotate | Download (4.42 KB)

1
/*
2
 *        BIRD -- Router Advertisement
3
 *
4
 *
5
 *        Can be freely distributed and used under the terms of the GNU GPL.
6
 */
7

    
8
#ifndef _BIRD_RADV_H_
9
#define _BIRD_RADV_H_
10

    
11
#include "nest/bird.h"
12

    
13
#include "lib/ip.h"
14
#include "lib/lists.h"
15
#include "lib/socket.h"
16
#include "sysdep/unix/timer.h"
17
#include "lib/resource.h"
18
#include "nest/protocol.h"
19
#include "nest/iface.h"
20
#include "nest/route.h"
21
#include "nest/cli.h"
22
#include "nest/locks.h"
23
#include "conf/conf.h"
24
#include "lib/string.h"
25

    
26

    
27
#define ICMPV6_PROTO 58
28

    
29
#define ICMPV6_RS 133
30
#define ICMPV6_RA 134
31

    
32
#define MAX_INITIAL_RTR_ADVERTISEMENTS 3
33
#define MAX_INITIAL_RTR_ADVERT_INTERVAL 16
34

    
35
#define DEFAULT_MAX_RA_INT 600
36
#define DEFAULT_MIN_DELAY 3
37
#define DEFAULT_CURRENT_HOP_LIMIT 64
38

    
39
#define DEFAULT_VALID_LIFETIME 86400
40
#define DEFAULT_PREFERRED_LIFETIME 14400
41

    
42
#define DEFAULT_DNS_LIFETIME_MULT 3
43

    
44

    
45
struct radv_config
46
{
47
  struct proto_config c;
48
  list patt_list;                /* List of iface configs (struct radv_iface_config) */
49
  list pref_list;                /* Global list of prefix configs (struct radv_prefix_config) */
50
  list rdnss_list;                /* Global list of RDNSS configs (struct radv_rdnss_config) */
51
  list dnssl_list;                /* Global list of DNSSL configs (struct radv_dnssl_config) */
52

    
53
  net_addr trigger;                /* Prefix of a trigger route, if defined */
54
};
55

    
56
struct radv_iface_config
57
{
58
  struct iface_patt i;
59
  list pref_list;                /* Local list of prefix configs (struct radv_prefix_config) */
60
  list rdnss_list;                /* Local list of RDNSS configs (struct radv_rdnss_config) */
61
  list dnssl_list;                /* Local list of DNSSL configs (struct radv_dnssl_config) */
62

    
63
  u32 min_ra_int;                /* Standard options from RFC 4261 */
64
  u32 max_ra_int;
65
  u32 min_delay;
66

    
67
  u8 rdnss_local;                /* Global list is not used for RDNSS */
68
  u8 dnssl_local;                /* Global list is not used for DNSSL */
69

    
70
  u8 managed;                        /* Standard options from RFC 4261 */
71
  u8 other_config;
72
  u32 link_mtu;
73
  u32 reachable_time;
74
  u32 retrans_timer;
75
  u32 current_hop_limit;
76
  u32 default_lifetime;
77
  u8 default_lifetime_sensitive; /* Whether default_lifetime depends on trigger */
78
  u8 default_preference;        /* Default Router Preference (RFC 4191) */
79
};
80

    
81
struct radv_prefix_config
82
{
83
  node n;
84
  net_addr_ip6 prefix;
85

    
86
  u8 skip;                        /* Do not include this prefix to RA */
87
  u8 onlink;                        /* Standard options from RFC 4261 */
88
  u8 autonomous;
89
  u32 valid_lifetime;
90
  u32 preferred_lifetime;
91
  u8 valid_lifetime_sensitive;         /* Whether valid_lifetime depends on trigger */
92
  u8 preferred_lifetime_sensitive; /* Whether preferred_lifetime depends on trigger */
93
};
94

    
95
struct radv_rdnss_config
96
{
97
  node n;
98
  u32 lifetime;                        /* Valid if lifetime_mult is 0 */
99
  u16 lifetime_mult;                /* Lifetime specified as multiple of max_ra_int */
100
  ip6_addr server;                /* IP address of recursive DNS server */
101
};
102

    
103
struct radv_dnssl_config
104
{
105
  node n;
106
  u32 lifetime;                        /* Valid if lifetime_mult is 0 */
107
  u16 lifetime_mult;                /* Lifetime specified as multiple of max_ra_int */
108
  u8 dlen_first;                /* Length of first label in domain */
109
  u8 dlen_all;                        /* Both dlen_ filled in radv_process_domain() */
110
  char *domain;                        /* Domain for DNS search list, in processed form */
111
};
112

    
113

    
114
struct proto_radv
115
{
116
  struct proto p;
117
  list iface_list;                /* List of active ifaces */
118
  u8 active;                        /* Whether radv is active w.r.t. triggers */
119
};
120

    
121
struct radv_iface
122
{
123
  node n;
124
  struct proto_radv *ra;
125
  struct radv_iface_config *cf;        /* Related config, must be updated in reconfigure */
126
  struct iface *iface;
127
  struct ifa *addr;                /* Link-local address of iface */
128

    
129
  timer *timer;
130
  struct object_lock *lock;
131
  sock *sk;
132

    
133
  bird_clock_t last;                /* Time of last sending of RA */
134
  u16 plen;                        /* Length of prepared RA in tbuf, or 0 if not valid */
135
  byte initial;                        /* List of active ifaces */
136
};
137

    
138
#define RA_EV_INIT 1                /* Switch to initial mode */
139
#define RA_EV_CHANGE 2                /* Change of options or prefixes */
140
#define RA_EV_RS 3                /* Received RS */
141

    
142
/* Default Router Preferences (RFC 4191) */
143
#define RA_PREF_LOW        0x18
144
#define RA_PREF_MEDIUM        0x00
145
#define RA_PREF_HIGH        0x08
146
#define RA_PREF_MASK        0x18
147

    
148

    
149
#ifdef LOCAL_DEBUG
150
#define RADV_FORCE_DEBUG 1
151
#else
152
#define RADV_FORCE_DEBUG 0
153
#endif
154
#define RADV_TRACE(flags, msg, args...) do { if ((ra->p.debug & flags) || RADV_FORCE_DEBUG) \
155
        log(L_TRACE "%s: " msg, ra->p.name , ## args ); } while(0)
156

    
157

    
158
/* radv.c */
159
void radv_iface_notify(struct radv_iface *ifa, int event);
160

    
161
/* packets.c */
162
int radv_process_domain(struct radv_dnssl_config *cf);
163
void radv_send_ra(struct radv_iface *ifa, int shutdown);
164
int radv_sk_open(struct radv_iface *ifa);
165

    
166

    
167

    
168
#endif /* _BIRD_RADV_H_ */