diff options
Diffstat (limited to 'include/net/ndisc.h')
| -rw-r--r-- | include/net/ndisc.h | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/include/net/ndisc.h b/include/net/ndisc.h new file mode 100644 index 00000000..62beeb97 --- /dev/null +++ b/include/net/ndisc.h @@ -0,0 +1,157 @@ +#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 + +#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 |