| #ifndef _NDISC_H |
| #define _NDISC_H |
| |
| /* |
| * ICMP codes for neighbour discovery messages |
| */ |
| |
| #define NDISC_ROUTER_SOLICITATION 133 |
| #define NDISC_ROUTER_ADVERTISEMENT 134 |
| #define NDISC_NEIGHBOUR_SOLICITATION 135 |
| #define NDISC_NEIGHBOUR_ADVERTISEMENT 136 |
| #define NDISC_REDIRECT 137 |
| |
| /* |
| * Router type: cross-layer information from link-layer to |
| * IPv6 layer reported by certain link types (e.g., RFC4214). |
| */ |
| #define NDISC_NODETYPE_UNSPEC 0 /* unspecified (default) */ |
| #define NDISC_NODETYPE_HOST 1 /* host or unauthorized router */ |
| #define NDISC_NODETYPE_NODEFAULT 2 /* non-default router */ |
| #define NDISC_NODETYPE_DEFAULT 3 /* default router */ |
| |
| /* |
| * ndisc options |
| */ |
| |
| enum { |
| __ND_OPT_PREFIX_INFO_END = 0, |
| ND_OPT_SOURCE_LL_ADDR = 1, /* RFC2461 */ |
| ND_OPT_TARGET_LL_ADDR = 2, /* RFC2461 */ |
| ND_OPT_PREFIX_INFO = 3, /* RFC2461 */ |
| ND_OPT_REDIRECT_HDR = 4, /* RFC2461 */ |
| ND_OPT_MTU = 5, /* RFC2461 */ |
| __ND_OPT_ARRAY_MAX, |
| ND_OPT_ROUTE_INFO = 24, /* RFC4191 */ |
| ND_OPT_RDNSS = 25, /* RFC5006 */ |
| __ND_OPT_MAX |
| }; |
| |
| #define MAX_RTR_SOLICITATION_DELAY HZ |
| |
| #define ND_REACHABLE_TIME (30*HZ) |
| #define ND_RETRANS_TIMER HZ |
| |
| #ifdef __KERNEL__ |
| |
| #include <linux/compiler.h> |
| #include <linux/icmpv6.h> |
| #include <linux/in6.h> |
| #include <linux/types.h> |
| |
| #include <net/neighbour.h> |
| |
| struct ctl_table; |
| struct inet6_dev; |
| struct net_device; |
| struct net_proto_family; |
| struct sk_buff; |
| |
| extern struct neigh_table nd_tbl; |
| |
| struct nd_msg { |
| struct icmp6hdr icmph; |
| struct in6_addr target; |
| __u8 opt[0]; |
| }; |
| |
| struct rs_msg { |
| struct icmp6hdr icmph; |
| __u8 opt[0]; |
| }; |
| |
| struct ra_msg { |
| struct icmp6hdr icmph; |
| __be32 reachable_time; |
| __be32 retrans_timer; |
| }; |
| |
| struct nd_opt_hdr { |
| __u8 nd_opt_type; |
| __u8 nd_opt_len; |
| } __packed; |
| |
| |
| extern int ndisc_init(void); |
| |
| extern void ndisc_cleanup(void); |
| |
| extern int ndisc_rcv(struct sk_buff *skb); |
| |
| extern void ndisc_send_ns(struct net_device *dev, |
| struct neighbour *neigh, |
| const struct in6_addr *solicit, |
| const struct in6_addr *daddr, |
| const struct in6_addr *saddr); |
| |
| extern void ndisc_send_rs(struct net_device *dev, |
| const struct in6_addr *saddr, |
| const struct in6_addr *daddr); |
| |
| extern void ndisc_send_redirect(struct sk_buff *skb, |
| struct neighbour *neigh, |
| const struct in6_addr *target); |
| |
| extern int ndisc_mc_map(const struct in6_addr *addr, char *buf, |
| struct net_device *dev, int dir); |
| |
| extern struct sk_buff *ndisc_build_skb(struct net_device *dev, |
| const struct in6_addr *daddr, |
| const struct in6_addr *saddr, |
| struct icmp6hdr *icmp6h, |
| const struct in6_addr *target, |
| int llinfo); |
| |
| extern void ndisc_send_skb(struct sk_buff *skb, |
| struct net_device *dev, |
| struct neighbour *neigh, |
| const struct in6_addr *daddr, |
| const struct in6_addr *saddr, |
| struct icmp6hdr *icmp6h); |
| |
| |
| |
| /* |
| * IGMP |
| */ |
| extern int igmp6_init(void); |
| |
| extern void igmp6_cleanup(void); |
| |
| extern int igmp6_event_query(struct sk_buff *skb); |
| |
| extern int igmp6_event_report(struct sk_buff *skb); |
| |
| |
| #ifdef CONFIG_SYSCTL |
| extern int ndisc_ifinfo_sysctl_change(struct ctl_table *ctl, |
| int write, |
| void __user *buffer, |
| size_t *lenp, |
| loff_t *ppos); |
| int ndisc_ifinfo_sysctl_strategy(ctl_table *ctl, |
| void __user *oldval, size_t __user *oldlenp, |
| void __user *newval, size_t newlen); |
| #endif |
| |
| extern void inet6_ifinfo_notify(int event, |
| struct inet6_dev *idev); |
| |
| static inline struct neighbour * ndisc_get_neigh(struct net_device *dev, const struct in6_addr *addr) |
| { |
| |
| if (dev) |
| return __neigh_lookup_errno(&nd_tbl, addr, dev); |
| |
| return ERR_PTR(-ENODEV); |
| } |
| |
| |
| #endif /* __KERNEL__ */ |
| |
| |
| #endif |