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 | ||
14 | /* | |
15 | * ndisc options | |
16 | */ | |
17 | ||
18 | enum { | |
19 | __ND_OPT_PREFIX_INFO_END = 0, | |
20 | ND_OPT_SOURCE_LL_ADDR = 1, /* RFC2461 */ | |
21 | ND_OPT_TARGET_LL_ADDR = 2, /* RFC2461 */ | |
22 | ND_OPT_PREFIX_INFO = 3, /* RFC2461 */ | |
23 | ND_OPT_REDIRECT_HDR = 4, /* RFC2461 */ | |
24 | ND_OPT_MTU = 5, /* RFC2461 */ | |
70ceb4f5 YH |
25 | __ND_OPT_ARRAY_MAX, |
26 | ND_OPT_ROUTE_INFO = 24, /* RFC4191 */ | |
1da177e4 LT |
27 | __ND_OPT_MAX |
28 | }; | |
29 | ||
30 | #define MAX_RTR_SOLICITATION_DELAY HZ | |
31 | ||
32 | #define ND_REACHABLE_TIME (30*HZ) | |
33 | #define ND_RETRANS_TIMER HZ | |
34 | ||
35 | #define ND_MIN_RANDOM_FACTOR (1/2) | |
36 | #define ND_MAX_RANDOM_FACTOR (3/2) | |
37 | ||
38 | #ifdef __KERNEL__ | |
39 | ||
14c85021 | 40 | #include <linux/compiler.h> |
1da177e4 | 41 | #include <linux/icmpv6.h> |
14c85021 ACM |
42 | #include <linux/in6.h> |
43 | #include <linux/types.h> | |
44 | ||
1da177e4 | 45 | #include <net/neighbour.h> |
14c85021 ACM |
46 | |
47 | struct ctl_table; | |
48 | struct file; | |
49 | struct inet6_dev; | |
50 | struct net_device; | |
51 | struct net_proto_family; | |
52 | struct sk_buff; | |
1da177e4 LT |
53 | |
54 | extern struct neigh_table nd_tbl; | |
55 | ||
56 | struct nd_msg { | |
57 | struct icmp6hdr icmph; | |
58 | struct in6_addr target; | |
59 | __u8 opt[0]; | |
60 | }; | |
61 | ||
62 | struct rs_msg { | |
63 | struct icmp6hdr icmph; | |
64 | __u8 opt[0]; | |
65 | }; | |
66 | ||
67 | struct ra_msg { | |
68 | struct icmp6hdr icmph; | |
e69a4adc AV |
69 | __be32 reachable_time; |
70 | __be32 retrans_timer; | |
1da177e4 LT |
71 | }; |
72 | ||
73 | struct nd_opt_hdr { | |
74 | __u8 nd_opt_type; | |
75 | __u8 nd_opt_len; | |
76 | } __attribute__((__packed__)); | |
77 | ||
78 | ||
79 | extern int ndisc_init(struct net_proto_family *ops); | |
80 | ||
81 | extern void ndisc_cleanup(void); | |
82 | ||
83 | extern int ndisc_rcv(struct sk_buff *skb); | |
84 | ||
85 | extern void ndisc_send_ns(struct net_device *dev, | |
86 | struct neighbour *neigh, | |
87 | struct in6_addr *solicit, | |
88 | struct in6_addr *daddr, | |
89 | struct in6_addr *saddr); | |
90 | ||
91 | extern void ndisc_send_rs(struct net_device *dev, | |
92 | struct in6_addr *saddr, | |
93 | struct in6_addr *daddr); | |
94 | ||
95 | extern void ndisc_forwarding_on(void); | |
96 | extern void ndisc_forwarding_off(void); | |
97 | ||
98 | extern void ndisc_send_redirect(struct sk_buff *skb, | |
99 | struct neighbour *neigh, | |
100 | struct in6_addr *target); | |
101 | ||
102 | extern int ndisc_mc_map(struct in6_addr *addr, char *buf, struct net_device *dev, int dir); | |
103 | ||
104 | ||
105 | struct rt6_info * dflt_rt_lookup(void); | |
106 | ||
107 | /* | |
108 | * IGMP | |
109 | */ | |
110 | extern int igmp6_init(struct net_proto_family *ops); | |
111 | ||
112 | extern void igmp6_cleanup(void); | |
113 | ||
114 | extern int igmp6_event_query(struct sk_buff *skb); | |
115 | ||
116 | extern int igmp6_event_report(struct sk_buff *skb); | |
117 | ||
118 | extern void igmp6_cleanup(void); | |
119 | ||
120 | #ifdef CONFIG_SYSCTL | |
14c85021 | 121 | extern int ndisc_ifinfo_sysctl_change(struct ctl_table *ctl, |
1da177e4 LT |
122 | int write, |
123 | struct file * filp, | |
124 | void __user *buffer, | |
125 | size_t *lenp, | |
126 | loff_t *ppos); | |
127 | #endif | |
128 | ||
129 | extern void inet6_ifinfo_notify(int event, | |
130 | struct inet6_dev *idev); | |
131 | ||
132 | static inline struct neighbour * ndisc_get_neigh(struct net_device *dev, struct in6_addr *addr) | |
133 | { | |
134 | ||
135 | if (dev) | |
136 | return __neigh_lookup(&nd_tbl, addr, dev, 1); | |
137 | ||
138 | return NULL; | |
139 | } | |
140 | ||
141 | ||
142 | #endif /* __KERNEL__ */ | |
143 | ||
144 | ||
145 | #endif |