ndisc.h 2.9 KB

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  1. #ifndef _NDISC_H
  2. #define _NDISC_H
  3. /*
  4. * ICMP codes for neighbour discovery messages
  5. */
  6. #define NDISC_ROUTER_SOLICITATION 133
  7. #define NDISC_ROUTER_ADVERTISEMENT 134
  8. #define NDISC_NEIGHBOUR_SOLICITATION 135
  9. #define NDISC_NEIGHBOUR_ADVERTISEMENT 136
  10. #define NDISC_REDIRECT 137
  11. /*
  12. * ndisc options
  13. */
  14. enum {
  15. __ND_OPT_PREFIX_INFO_END = 0,
  16. ND_OPT_SOURCE_LL_ADDR = 1, /* RFC2461 */
  17. ND_OPT_TARGET_LL_ADDR = 2, /* RFC2461 */
  18. ND_OPT_PREFIX_INFO = 3, /* RFC2461 */
  19. ND_OPT_REDIRECT_HDR = 4, /* RFC2461 */
  20. ND_OPT_MTU = 5, /* RFC2461 */
  21. __ND_OPT_ARRAY_MAX,
  22. ND_OPT_ROUTE_INFO = 24, /* RFC4191 */
  23. __ND_OPT_MAX
  24. };
  25. #define MAX_RTR_SOLICITATION_DELAY HZ
  26. #define ND_REACHABLE_TIME (30*HZ)
  27. #define ND_RETRANS_TIMER HZ
  28. #define ND_MIN_RANDOM_FACTOR (1/2)
  29. #define ND_MAX_RANDOM_FACTOR (3/2)
  30. #ifdef __KERNEL__
  31. #include <linux/compiler.h>
  32. #include <linux/icmpv6.h>
  33. #include <linux/in6.h>
  34. #include <linux/types.h>
  35. #include <net/neighbour.h>
  36. struct ctl_table;
  37. struct file;
  38. struct inet6_dev;
  39. struct net_device;
  40. struct net_proto_family;
  41. struct sk_buff;
  42. extern struct neigh_table nd_tbl;
  43. struct nd_msg {
  44. struct icmp6hdr icmph;
  45. struct in6_addr target;
  46. __u8 opt[0];
  47. };
  48. struct rs_msg {
  49. struct icmp6hdr icmph;
  50. __u8 opt[0];
  51. };
  52. struct ra_msg {
  53. struct icmp6hdr icmph;
  54. __be32 reachable_time;
  55. __be32 retrans_timer;
  56. };
  57. struct nd_opt_hdr {
  58. __u8 nd_opt_type;
  59. __u8 nd_opt_len;
  60. } __attribute__((__packed__));
  61. extern int ndisc_init(struct net_proto_family *ops);
  62. extern void ndisc_cleanup(void);
  63. extern int ndisc_rcv(struct sk_buff *skb);
  64. extern void ndisc_send_ns(struct net_device *dev,
  65. struct neighbour *neigh,
  66. struct in6_addr *solicit,
  67. struct in6_addr *daddr,
  68. struct in6_addr *saddr);
  69. extern void ndisc_send_rs(struct net_device *dev,
  70. struct in6_addr *saddr,
  71. struct in6_addr *daddr);
  72. extern void ndisc_forwarding_on(void);
  73. extern void ndisc_forwarding_off(void);
  74. extern void ndisc_send_redirect(struct sk_buff *skb,
  75. struct neighbour *neigh,
  76. struct in6_addr *target);
  77. extern int ndisc_mc_map(struct in6_addr *addr, char *buf, struct net_device *dev, int dir);
  78. struct rt6_info * dflt_rt_lookup(void);
  79. /*
  80. * IGMP
  81. */
  82. extern int igmp6_init(struct net_proto_family *ops);
  83. extern void igmp6_cleanup(void);
  84. extern int igmp6_event_query(struct sk_buff *skb);
  85. extern int igmp6_event_report(struct sk_buff *skb);
  86. extern void igmp6_cleanup(void);
  87. #ifdef CONFIG_SYSCTL
  88. extern int ndisc_ifinfo_sysctl_change(struct ctl_table *ctl,
  89. int write,
  90. struct file * filp,
  91. void __user *buffer,
  92. size_t *lenp,
  93. loff_t *ppos);
  94. #endif
  95. extern void inet6_ifinfo_notify(int event,
  96. struct inet6_dev *idev);
  97. static inline struct neighbour * ndisc_get_neigh(struct net_device *dev, struct in6_addr *addr)
  98. {
  99. if (dev)
  100. return __neigh_lookup(&nd_tbl, addr, dev, 1);
  101. return NULL;
  102. }
  103. #endif /* __KERNEL__ */
  104. #endif