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Commit | Line | Data |
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1da177e4 LT |
1 | #ifndef _NDISC_H |
2 | #define _NDISC_H | |
3 | ||
4 | /* | |
5 | * ICMP codes for neighbour discovery messages | |
6 | */ | |
7 | ||
8 | #define NDISC_ROUTER_SOLICITATION 133 | |
9 | #define NDISC_ROUTER_ADVERTISEMENT 134 | |
10 | #define NDISC_NEIGHBOUR_SOLICITATION 135 | |
11 | #define NDISC_NEIGHBOUR_ADVERTISEMENT 136 | |
12 | #define NDISC_REDIRECT 137 | |
13 | ||
fadf6bf0 TF |
14 | /* |
15 | * Router type: cross-layer information from link-layer to | |
16 | * IPv6 layer reported by certain link types (e.g., RFC4214). | |
17 | */ | |
18 | #define NDISC_NODETYPE_UNSPEC 0 /* unspecified (default) */ | |
19 | #define NDISC_NODETYPE_HOST 1 /* host or unauthorized router */ | |
20 | #define NDISC_NODETYPE_NODEFAULT 2 /* non-default router */ | |
21 | #define NDISC_NODETYPE_DEFAULT 3 /* default router */ | |
22 | ||
1da177e4 LT |
23 | /* |
24 | * ndisc options | |
25 | */ | |
26 | ||
27 | enum { | |
28 | __ND_OPT_PREFIX_INFO_END = 0, | |
29 | ND_OPT_SOURCE_LL_ADDR = 1, /* RFC2461 */ | |
30 | ND_OPT_TARGET_LL_ADDR = 2, /* RFC2461 */ | |
31 | ND_OPT_PREFIX_INFO = 3, /* RFC2461 */ | |
32 | ND_OPT_REDIRECT_HDR = 4, /* RFC2461 */ | |
33 | ND_OPT_MTU = 5, /* RFC2461 */ | |
70ceb4f5 YH |
34 | __ND_OPT_ARRAY_MAX, |
35 | ND_OPT_ROUTE_INFO = 24, /* RFC4191 */ | |
31910575 | 36 | ND_OPT_RDNSS = 25, /* RFC5006 */ |
1da177e4 LT |
37 | __ND_OPT_MAX |
38 | }; | |
39 | ||
40 | #define MAX_RTR_SOLICITATION_DELAY HZ | |
41 | ||
42 | #define ND_REACHABLE_TIME (30*HZ) | |
43 | #define ND_RETRANS_TIMER HZ | |
44 | ||
45 | #define ND_MIN_RANDOM_FACTOR (1/2) | |
46 | #define ND_MAX_RANDOM_FACTOR (3/2) | |
47 | ||
48 | #ifdef __KERNEL__ | |
49 | ||
14c85021 | 50 | #include <linux/compiler.h> |
1da177e4 | 51 | #include <linux/icmpv6.h> |
14c85021 ACM |
52 | #include <linux/in6.h> |
53 | #include <linux/types.h> | |
54 | ||
1da177e4 | 55 | #include <net/neighbour.h> |
14c85021 ACM |
56 | |
57 | struct ctl_table; | |
58 | struct file; | |
59 | struct inet6_dev; | |
60 | struct net_device; | |
61 | struct net_proto_family; | |
62 | struct sk_buff; | |
1da177e4 LT |
63 | |
64 | extern struct neigh_table nd_tbl; | |
65 | ||
66 | struct nd_msg { | |
67 | struct icmp6hdr icmph; | |
68 | struct in6_addr target; | |
69 | __u8 opt[0]; | |
70 | }; | |
71 | ||
72 | struct rs_msg { | |
73 | struct icmp6hdr icmph; | |
74 | __u8 opt[0]; | |
75 | }; | |
76 | ||
77 | struct ra_msg { | |
78 | struct icmp6hdr icmph; | |
e69a4adc AV |
79 | __be32 reachable_time; |
80 | __be32 retrans_timer; | |
1da177e4 LT |
81 | }; |
82 | ||
83 | struct nd_opt_hdr { | |
84 | __u8 nd_opt_type; | |
85 | __u8 nd_opt_len; | |
86 | } __attribute__((__packed__)); | |
87 | ||
88 | ||
9b0f976f | 89 | extern int ndisc_init(void); |
1da177e4 LT |
90 | |
91 | extern void ndisc_cleanup(void); | |
92 | ||
93 | extern int ndisc_rcv(struct sk_buff *skb); | |
94 | ||
95 | extern void ndisc_send_ns(struct net_device *dev, | |
96 | struct neighbour *neigh, | |
9acd9f3a YH |
97 | const struct in6_addr *solicit, |
98 | const struct in6_addr *daddr, | |
99 | const struct in6_addr *saddr); | |
1da177e4 LT |
100 | |
101 | extern void ndisc_send_rs(struct net_device *dev, | |
9acd9f3a YH |
102 | const struct in6_addr *saddr, |
103 | const struct in6_addr *daddr); | |
1da177e4 | 104 | |
1da177e4 LT |
105 | extern void ndisc_send_redirect(struct sk_buff *skb, |
106 | struct neighbour *neigh, | |
9acd9f3a | 107 | const struct in6_addr *target); |
1da177e4 LT |
108 | |
109 | extern int ndisc_mc_map(struct in6_addr *addr, char *buf, struct net_device *dev, int dir); | |
110 | ||
305d552a BH |
111 | extern struct sk_buff *ndisc_build_skb(struct net_device *dev, |
112 | const struct in6_addr *daddr, | |
113 | const struct in6_addr *saddr, | |
114 | struct icmp6hdr *icmp6h, | |
115 | const struct in6_addr *target, | |
116 | int llinfo); | |
117 | ||
118 | extern void ndisc_send_skb(struct sk_buff *skb, | |
119 | struct net_device *dev, | |
120 | struct neighbour *neigh, | |
121 | const struct in6_addr *daddr, | |
122 | const struct in6_addr *saddr, | |
123 | struct icmp6hdr *icmp6h); | |
124 | ||
1da177e4 | 125 | |
1da177e4 LT |
126 | |
127 | /* | |
128 | * IGMP | |
129 | */ | |
9b0f976f | 130 | extern int igmp6_init(void); |
1da177e4 LT |
131 | |
132 | extern void igmp6_cleanup(void); | |
133 | ||
134 | extern int igmp6_event_query(struct sk_buff *skb); | |
135 | ||
136 | extern int igmp6_event_report(struct sk_buff *skb); | |
137 | ||
1da177e4 LT |
138 | |
139 | #ifdef CONFIG_SYSCTL | |
14c85021 | 140 | extern int ndisc_ifinfo_sysctl_change(struct ctl_table *ctl, |
1da177e4 LT |
141 | int write, |
142 | struct file * filp, | |
143 | void __user *buffer, | |
144 | size_t *lenp, | |
145 | loff_t *ppos); | |
f221e726 AD |
146 | int ndisc_ifinfo_sysctl_strategy(ctl_table *ctl, |
147 | void __user *oldval, size_t __user *oldlenp, | |
0686caa3 | 148 | void __user *newval, size_t newlen); |
1da177e4 LT |
149 | #endif |
150 | ||
151 | extern void inet6_ifinfo_notify(int event, | |
152 | struct inet6_dev *idev); | |
153 | ||
9acd9f3a | 154 | static inline struct neighbour * ndisc_get_neigh(struct net_device *dev, const struct in6_addr *addr) |
1da177e4 LT |
155 | { |
156 | ||
157 | if (dev) | |
14deae41 | 158 | return __neigh_lookup_errno(&nd_tbl, addr, dev); |
1da177e4 | 159 | |
14deae41 | 160 | return ERR_PTR(-ENODEV); |
1da177e4 LT |
161 | } |
162 | ||
163 | ||
164 | #endif /* __KERNEL__ */ | |
165 | ||
166 | ||
167 | #endif |