| 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 */ |
| 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 |