[net-next-2.6.git] / include / net / ndisc.h

#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
 */

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_MAX
};

#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/compiler.h>
#include <linux/icmpv6.h>
#include <linux/in6.h>
#include <linux/types.h>

#include <net/neighbour.h>

struct ctl_table;
struct file;
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;
	__u32			reachable_time;
	__u32			retrans_timer;
};

struct nd_opt_hdr {
	__u8		nd_opt_type;
	__u8		nd_opt_len;
} __attribute__((__packed__));


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);

#ifdef CONFIG_SYSCTL
extern int 			ndisc_ifinfo_sysctl_change(struct ctl_table *ctl,
							   int write,
							   struct file * filp,
							   void __user *buffer,
							   size_t *lenp,
							   loff_t *ppos);
#endif

extern void 			inet6_ifinfo_notify(int event,
						    struct inet6_dev *idev);

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
Commit	Line	Data
1da177e4 LT	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 */
70ceb4f5 YH	25	__ND_OPT_ARRAY_MAX,
70ceb4f5 YH	26	ND_OPT_ROUTE_INFO = 24, /* RFC4191 */
1da177e4 LT	27	__ND_OPT_MAX
	28	};
	29
	30	#define MAX_RTR_SOLICITATION_DELAY HZ
	31
	32	#define ND_REACHABLE_TIME (30*HZ)
	33	#define ND_RETRANS_TIMER HZ
	34
	35	#define ND_MIN_RANDOM_FACTOR (1/2)
	36	#define ND_MAX_RANDOM_FACTOR (3/2)
	37
	38	#ifdef __KERNEL__
	39
14c85021	40	#include <linux/compiler.h>
1da177e4	41	#include <linux/icmpv6.h>
14c85021 ACM	42	#include <linux/in6.h>
	43	#include <linux/types.h>
	44
1da177e4	45	#include <net/neighbour.h>
14c85021 ACM	46
	47	struct ctl_table;
	48	struct file;
	49	struct inet6_dev;
	50	struct net_device;
	51	struct net_proto_family;
	52	struct sk_buff;
1da177e4 LT	53
	54	extern struct neigh_table nd_tbl;
	55
	56	struct nd_msg {
	57	struct icmp6hdr icmph;
	58	struct in6_addr target;
	59	__u8 opt[0];
	60	};
	61
	62	struct rs_msg {
	63	struct icmp6hdr icmph;
	64	__u8 opt[0];
	65	};
	66
	67	struct ra_msg {
	68	struct icmp6hdr icmph;
	69	__u32 reachable_time;
	70	__u32 retrans_timer;
	71	};
	72
	73	struct nd_opt_hdr {
	74	__u8 nd_opt_type;
	75	__u8 nd_opt_len;
	76	} __attribute__((__packed__));
	77
	78
	79	extern int ndisc_init(struct net_proto_family *ops);
	80
	81	extern void ndisc_cleanup(void);
	82
	83	extern int ndisc_rcv(struct sk_buff *skb);
	84
	85	extern void ndisc_send_ns(struct net_device *dev,
	86	struct neighbour *neigh,
	87	struct in6_addr *solicit,
	88	struct in6_addr *daddr,
	89	struct in6_addr *saddr);
	90
	91	extern void ndisc_send_rs(struct net_device *dev,
	92	struct in6_addr *saddr,
	93	struct in6_addr *daddr);
	94
	95	extern void ndisc_forwarding_on(void);
	96	extern void ndisc_forwarding_off(void);
	97
	98	extern void ndisc_send_redirect(struct sk_buff *skb,
	99	struct neighbour *neigh,
	100	struct in6_addr *target);
	101
	102	extern int ndisc_mc_map(struct in6_addr addr, char buf, struct net_device *dev, int dir);
	103
	104
	105	struct rt6_info * dflt_rt_lookup(void);
	106
	107	/*
	108	* IGMP
	109	*/
	110	extern int igmp6_init(struct net_proto_family *ops);
	111
	112	extern void igmp6_cleanup(void);
	113
	114	extern int igmp6_event_query(struct sk_buff *skb);
	115
	116	extern int igmp6_event_report(struct sk_buff *skb);
117
118	extern void igmp6_cleanup(void);
119
120	#ifdef CONFIG_SYSCTL
14c85021	121	extern int ndisc_ifinfo_sysctl_change(struct ctl_table *ctl,
1da177e4 LT	122	int write,
	123	struct file * filp,
	124	void __user *buffer,
	125	size_t *lenp,
	126	loff_t *ppos);
	127	#endif
	128
	129	extern void inet6_ifinfo_notify(int event,
	130	struct inet6_dev *idev);
	131
	132	static inline struct neighbour * ndisc_get_neigh(struct net_device dev, struct in6_addr addr)
	133	{
	134
	135	if (dev)
	136	return __neigh_lookup(&nd_tbl, addr, dev, 1);
	137
	138	return NULL;
	139	}
	140
	141
	142	#endif /* __KERNEL__ */
	143
	144
	145	#endif