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 */ | |
25 | __ND_OPT_MAX | |
26 | }; | |
27 | ||
28 | #define MAX_RTR_SOLICITATION_DELAY HZ | |
29 | ||
30 | #define ND_REACHABLE_TIME (30*HZ) | |
31 | #define ND_RETRANS_TIMER HZ | |
32 | ||
33 | #define ND_MIN_RANDOM_FACTOR (1/2) | |
34 | #define ND_MAX_RANDOM_FACTOR (3/2) | |
35 | ||
36 | #ifdef __KERNEL__ | |
37 | ||
38 | #include <linux/skbuff.h> | |
39 | #include <linux/netdevice.h> | |
40 | #include <linux/icmpv6.h> | |
41 | #include <net/neighbour.h> | |
42 | #include <asm/atomic.h> | |
43 | ||
44 | extern struct neigh_table nd_tbl; | |
45 | ||
46 | struct nd_msg { | |
47 | struct icmp6hdr icmph; | |
48 | struct in6_addr target; | |
49 | __u8 opt[0]; | |
50 | }; | |
51 | ||
52 | struct rs_msg { | |
53 | struct icmp6hdr icmph; | |
54 | __u8 opt[0]; | |
55 | }; | |
56 | ||
57 | struct ra_msg { | |
58 | struct icmp6hdr icmph; | |
59 | __u32 reachable_time; | |
60 | __u32 retrans_timer; | |
61 | }; | |
62 | ||
63 | struct nd_opt_hdr { | |
64 | __u8 nd_opt_type; | |
65 | __u8 nd_opt_len; | |
66 | } __attribute__((__packed__)); | |
67 | ||
68 | ||
69 | extern int ndisc_init(struct net_proto_family *ops); | |
70 | ||
71 | extern void ndisc_cleanup(void); | |
72 | ||
73 | extern int ndisc_rcv(struct sk_buff *skb); | |
74 | ||
75 | extern void ndisc_send_ns(struct net_device *dev, | |
76 | struct neighbour *neigh, | |
77 | struct in6_addr *solicit, | |
78 | struct in6_addr *daddr, | |
79 | struct in6_addr *saddr); | |
80 | ||
81 | extern void ndisc_send_rs(struct net_device *dev, | |
82 | struct in6_addr *saddr, | |
83 | struct in6_addr *daddr); | |
84 | ||
85 | extern void ndisc_forwarding_on(void); | |
86 | extern void ndisc_forwarding_off(void); | |
87 | ||
88 | extern void ndisc_send_redirect(struct sk_buff *skb, | |
89 | struct neighbour *neigh, | |
90 | struct in6_addr *target); | |
91 | ||
92 | extern int ndisc_mc_map(struct in6_addr *addr, char *buf, struct net_device *dev, int dir); | |
93 | ||
94 | ||
95 | struct rt6_info * dflt_rt_lookup(void); | |
96 | ||
97 | /* | |
98 | * IGMP | |
99 | */ | |
100 | extern int igmp6_init(struct net_proto_family *ops); | |
101 | ||
102 | extern void igmp6_cleanup(void); | |
103 | ||
104 | extern int igmp6_event_query(struct sk_buff *skb); | |
105 | ||
106 | extern int igmp6_event_report(struct sk_buff *skb); | |
107 | ||
108 | extern void igmp6_cleanup(void); | |
109 | ||
110 | #ifdef CONFIG_SYSCTL | |
111 | extern int ndisc_ifinfo_sysctl_change(ctl_table *ctl, | |
112 | int write, | |
113 | struct file * filp, | |
114 | void __user *buffer, | |
115 | size_t *lenp, | |
116 | loff_t *ppos); | |
117 | #endif | |
118 | ||
119 | extern void inet6_ifinfo_notify(int event, | |
120 | struct inet6_dev *idev); | |
121 | ||
122 | static inline struct neighbour * ndisc_get_neigh(struct net_device *dev, struct in6_addr *addr) | |
123 | { | |
124 | ||
125 | if (dev) | |
126 | return __neigh_lookup(&nd_tbl, addr, dev, 1); | |
127 | ||
128 | return NULL; | |
129 | } | |
130 | ||
131 | ||
132 | #endif /* __KERNEL__ */ | |
133 | ||
134 | ||
135 | #endif |