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 | ||
14c85021 | 45 | #include <linux/compiler.h> |
1da177e4 | 46 | #include <linux/icmpv6.h> |
14c85021 ACM |
47 | #include <linux/in6.h> |
48 | #include <linux/types.h> | |
49 | ||
1da177e4 | 50 | #include <net/neighbour.h> |
14c85021 ACM |
51 | |
52 | struct ctl_table; | |
14c85021 ACM |
53 | struct inet6_dev; |
54 | struct net_device; | |
55 | struct net_proto_family; | |
56 | struct sk_buff; | |
1da177e4 LT |
57 | |
58 | extern struct neigh_table nd_tbl; | |
59 | ||
60 | struct nd_msg { | |
61 | struct icmp6hdr icmph; | |
62 | struct in6_addr target; | |
63 | __u8 opt[0]; | |
64 | }; | |
65 | ||
66 | struct rs_msg { | |
67 | struct icmp6hdr icmph; | |
68 | __u8 opt[0]; | |
69 | }; | |
70 | ||
71 | struct ra_msg { | |
72 | struct icmp6hdr icmph; | |
e69a4adc AV |
73 | __be32 reachable_time; |
74 | __be32 retrans_timer; | |
1da177e4 LT |
75 | }; |
76 | ||
77 | struct nd_opt_hdr { | |
78 | __u8 nd_opt_type; | |
79 | __u8 nd_opt_len; | |
bc10502d | 80 | } __packed; |
1da177e4 | 81 | |
2c2aba6c DM |
82 | static inline u32 ndisc_hashfn(const void *pkey, const struct net_device *dev, __u32 *hash_rnd) |
83 | { | |
84 | const u32 *p32 = pkey; | |
85 | ||
86 | return (((p32[0] ^ dev->ifindex) * hash_rnd[0]) + | |
87 | (p32[1] * hash_rnd[1]) + | |
88 | (p32[2] * hash_rnd[2]) + | |
89 | (p32[3] * hash_rnd[3])); | |
90 | } | |
1da177e4 | 91 | |
9b0f976f | 92 | extern int ndisc_init(void); |
1da177e4 LT |
93 | |
94 | extern void ndisc_cleanup(void); | |
95 | ||
96 | extern int ndisc_rcv(struct sk_buff *skb); | |
97 | ||
98 | extern void ndisc_send_ns(struct net_device *dev, | |
99 | struct neighbour *neigh, | |
9acd9f3a YH |
100 | const struct in6_addr *solicit, |
101 | const struct in6_addr *daddr, | |
102 | const struct in6_addr *saddr); | |
1da177e4 LT |
103 | |
104 | extern void ndisc_send_rs(struct net_device *dev, | |
9acd9f3a YH |
105 | const struct in6_addr *saddr, |
106 | const struct in6_addr *daddr); | |
1da177e4 | 107 | |
1da177e4 LT |
108 | extern void ndisc_send_redirect(struct sk_buff *skb, |
109 | struct neighbour *neigh, | |
9acd9f3a | 110 | const struct in6_addr *target); |
1da177e4 | 111 | |
b71d1d42 ED |
112 | extern int ndisc_mc_map(const struct in6_addr *addr, char *buf, |
113 | struct net_device *dev, int dir); | |
1da177e4 | 114 | |
305d552a BH |
115 | extern struct sk_buff *ndisc_build_skb(struct net_device *dev, |
116 | const struct in6_addr *daddr, | |
117 | const struct in6_addr *saddr, | |
118 | struct icmp6hdr *icmp6h, | |
119 | const struct in6_addr *target, | |
120 | int llinfo); | |
121 | ||
122 | extern void ndisc_send_skb(struct sk_buff *skb, | |
123 | struct net_device *dev, | |
124 | struct neighbour *neigh, | |
125 | const struct in6_addr *daddr, | |
126 | const struct in6_addr *saddr, | |
127 | struct icmp6hdr *icmp6h); | |
128 | ||
1da177e4 | 129 | |
1da177e4 LT |
130 | |
131 | /* | |
132 | * IGMP | |
133 | */ | |
9b0f976f | 134 | extern int igmp6_init(void); |
1da177e4 LT |
135 | |
136 | extern void igmp6_cleanup(void); | |
137 | ||
138 | extern int igmp6_event_query(struct sk_buff *skb); | |
139 | ||
140 | extern int igmp6_event_report(struct sk_buff *skb); | |
141 | ||
1da177e4 LT |
142 | |
143 | #ifdef CONFIG_SYSCTL | |
14c85021 | 144 | extern int ndisc_ifinfo_sysctl_change(struct ctl_table *ctl, |
1da177e4 | 145 | int write, |
1da177e4 LT |
146 | void __user *buffer, |
147 | size_t *lenp, | |
148 | loff_t *ppos); | |
f221e726 AD |
149 | int ndisc_ifinfo_sysctl_strategy(ctl_table *ctl, |
150 | void __user *oldval, size_t __user *oldlenp, | |
0686caa3 | 151 | void __user *newval, size_t newlen); |
1da177e4 LT |
152 | #endif |
153 | ||
154 | extern void inet6_ifinfo_notify(int event, | |
155 | struct inet6_dev *idev); | |
156 | ||
1da177e4 | 157 | #endif |