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#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
/*
* ndisc options
*/
#define ND_OPT_SOURCE_LL_ADDR 1
#define ND_OPT_TARGET_LL_ADDR 2
#define ND_OPT_PREFIX_INFO 3
#define ND_OPT_REDIRECT_HDR 4
#define ND_OPT_MTU 5
#define MAX_RTR_SOLICITATION_DELAY HZ
#define ND_REACHABLE_TIME (30*HZ)
#define ND_RETRANS_TIMER HZ
#define ND_MIN_RANDOM_FACTOR (1/2)
#define ND_MAX_RANDOM_FACTOR (3/2)
#ifdef __KERNEL__
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/icmpv6.h>
#include <net/neighbour.h>
#include <asm/atomic.h>
extern struct neigh_table nd_tbl;
struct nd_msg {
struct icmp6hdr icmph;
struct in6_addr target;
__u8 opt[0];
};
struct ra_msg {
struct icmp6hdr icmph;
__u32 reachable_time;
__u32 retrans_timer;
};
struct nd_opt_hdr {
__u8 nd_opt_type;
__u8 nd_opt_len;
} __attribute__((__packed__));
struct ndisc_options {
struct nd_opt_hdr *nd_opt_array[7];
struct nd_opt_hdr *nd_opt_piend;
};
#define nd_opts_src_lladdr nd_opt_array[ND_OPT_SOURCE_LL_ADDR]
#define nd_opts_tgt_lladdr nd_opt_array[ND_OPT_TARGET_LL_ADDR]
#define nd_opts_pi nd_opt_array[ND_OPT_PREFIX_INFO]
#define nd_opts_pi_end nd_opt_piend
#define nd_opts_rh nd_opt_array[ND_OPT_REDIRECT_HDR]
#define nd_opts_mtu nd_opt_array[ND_OPT_MTU]
extern struct nd_opt_hdr *ndisc_next_option(struct nd_opt_hdr *cur, struct nd_opt_hdr *end);
extern struct ndisc_options *ndisc_parse_options(u8 *opt, int opt_len, struct ndisc_options *ndopts);
extern int ndisc_init(struct net_proto_family *ops);
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,
struct in6_addr *solicit,
struct in6_addr *daddr,
struct in6_addr *saddr);
extern void ndisc_send_rs(struct net_device *dev,
struct in6_addr *saddr,
struct in6_addr *daddr);
extern void ndisc_forwarding_on(void);
extern void ndisc_forwarding_off(void);
extern void ndisc_send_redirect(struct sk_buff *skb,
struct neighbour *neigh,
struct in6_addr *target);
extern int ndisc_mc_map(struct in6_addr *addr, char *buf, struct net_device *dev, int dir);
struct rt6_info * dflt_rt_lookup(void);
/*
* IGMP
*/
extern int igmp6_init(struct net_proto_family *ops);
extern void igmp6_cleanup(void);
extern int igmp6_event_query(struct sk_buff *skb);
extern int igmp6_event_report(struct sk_buff *skb);
extern void igmp6_cleanup(void);
static inline struct neighbour * ndisc_get_neigh(struct net_device *dev, struct in6_addr *addr)
{
if (dev)
return __neigh_lookup(&nd_tbl, addr, dev, 1);
return NULL;
}
#endif /* __KERNEL__ */
#endif
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