Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 */ |
YOSHIFUJI Hideaki | 70ceb4f | 2006-03-20 17:06:24 -0800 | [diff] [blame] | 25 | __ND_OPT_ARRAY_MAX, |
| 26 | ND_OPT_ROUTE_INFO = 24, /* RFC4191 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Arnaldo Carvalho de Melo | 14c8502 | 2005-12-27 02:43:12 -0200 | [diff] [blame] | 40 | #include <linux/compiler.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | #include <linux/icmpv6.h> |
Arnaldo Carvalho de Melo | 14c8502 | 2005-12-27 02:43:12 -0200 | [diff] [blame] | 42 | #include <linux/in6.h> |
| 43 | #include <linux/types.h> |
| 44 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | #include <net/neighbour.h> |
Arnaldo Carvalho de Melo | 14c8502 | 2005-12-27 02:43:12 -0200 | [diff] [blame] | 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; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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; |
Al Viro | e69a4adc | 2006-11-14 20:56:00 -0800 | [diff] [blame] | 69 | __be32 reachable_time; |
| 70 | __be32 retrans_timer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 |
Arnaldo Carvalho de Melo | 14c8502 | 2005-12-27 02:43:12 -0200 | [diff] [blame] | 121 | extern int ndisc_ifinfo_sysctl_change(struct ctl_table *ctl, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 |