5 * ICMP codes for neighbour discovery messages
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
15 * Router type: cross-layer information from link-layer to
16 * IPv6 layer reported by certain link types (e.g., RFC4214).
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 */
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 */
35 ND_OPT_ROUTE_INFO = 24, /* RFC4191 */
36 ND_OPT_RDNSS = 25, /* RFC5006 */
40 #define MAX_RTR_SOLICITATION_DELAY HZ
42 #define ND_REACHABLE_TIME (30*HZ)
43 #define ND_RETRANS_TIMER HZ
45 #include <linux/compiler.h>
46 #include <linux/icmpv6.h>
47 #include <linux/in6.h>
48 #include <linux/types.h>
50 #include <net/neighbour.h>
55 struct net_proto_family;
58 extern struct neigh_table nd_tbl;
61 struct icmp6hdr icmph;
62 struct in6_addr target;
67 struct icmp6hdr icmph;
72 struct icmp6hdr icmph;
73 __be32 reachable_time;
82 static inline u32 ndisc_hashfn(const void *pkey, const struct net_device *dev, __u32 *hash_rnd)
84 const u32 *p32 = pkey;
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]));
92 extern int ndisc_init(void);
94 extern void ndisc_cleanup(void);
96 extern int ndisc_rcv(struct sk_buff *skb);
98 extern void ndisc_send_ns(struct net_device *dev,
99 struct neighbour *neigh,
100 const struct in6_addr *solicit,
101 const struct in6_addr *daddr,
102 const struct in6_addr *saddr);
104 extern void ndisc_send_rs(struct net_device *dev,
105 const struct in6_addr *saddr,
106 const struct in6_addr *daddr);
108 extern void ndisc_send_redirect(struct sk_buff *skb,
109 struct neighbour *neigh,
110 const struct in6_addr *target);
112 extern int ndisc_mc_map(const struct in6_addr *addr, char *buf,
113 struct net_device *dev, int dir);
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,
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);
134 extern int igmp6_init(void);
136 extern void igmp6_cleanup(void);
138 extern int igmp6_event_query(struct sk_buff *skb);
140 extern int igmp6_event_report(struct sk_buff *skb);
144 extern int ndisc_ifinfo_sysctl_change(struct ctl_table *ctl,
149 int ndisc_ifinfo_sysctl_strategy(ctl_table *ctl,
150 void __user *oldval, size_t __user *oldlenp,
151 void __user *newval, size_t newlen);
154 extern void inet6_ifinfo_notify(int event,
155 struct inet6_dev *idev);