[mirror_ubuntu-bionic-kernel.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_RDNSS = 25,		/* RFC5006 */
	__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;
	__be32			reachable_time;
	__be32			retrans_timer;
};

struct nd_opt_hdr {
	__u8		nd_opt_type;
	__u8		nd_opt_len;
} __attribute__((__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,
					      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);


/*
 *	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);

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 */
31910575	27	ND_OPT_RDNSS = 25, /* RFC5006 */
1da177e4 LT	28	__ND_OPT_MAX
	29	};
	30
	31	#define MAX_RTR_SOLICITATION_DELAY HZ
	32
	33	#define ND_REACHABLE_TIME (30*HZ)
	34	#define ND_RETRANS_TIMER HZ
	35
	36	#define ND_MIN_RANDOM_FACTOR (1/2)
	37	#define ND_MAX_RANDOM_FACTOR (3/2)
	38
	39	#ifdef __KERNEL__
	40
14c85021	41	#include <linux/compiler.h>
1da177e4	42	#include <linux/icmpv6.h>
14c85021 ACM	43	#include <linux/in6.h>
	44	#include <linux/types.h>
	45
1da177e4	46	#include <net/neighbour.h>
14c85021 ACM	47
	48	struct ctl_table;
	49	struct file;
	50	struct inet6_dev;
	51	struct net_device;
	52	struct net_proto_family;
	53	struct sk_buff;
1da177e4 LT	54
	55	extern struct neigh_table nd_tbl;
	56
	57	struct nd_msg {
	58	struct icmp6hdr icmph;
	59	struct in6_addr target;
	60	__u8 opt[0];
	61	};
	62
	63	struct rs_msg {
	64	struct icmp6hdr icmph;
	65	__u8 opt[0];
	66	};
	67
	68	struct ra_msg {
	69	struct icmp6hdr icmph;
e69a4adc AV	70	__be32 reachable_time;
e69a4adc AV	71	__be32 retrans_timer;
1da177e4 LT	72	};
	73
	74	struct nd_opt_hdr {
	75	__u8 nd_opt_type;
	76	__u8 nd_opt_len;
	77	} __attribute__((__packed__));
	78
	79
9b0f976f	80	extern int ndisc_init(void);
1da177e4 LT	81
	82	extern void ndisc_cleanup(void);
	83
	84	extern int ndisc_rcv(struct sk_buff *skb);
	85
	86	extern void ndisc_send_ns(struct net_device *dev,
	87	struct neighbour *neigh,
	88	struct in6_addr *solicit,
	89	struct in6_addr *daddr,
	90	struct in6_addr *saddr);
	91
	92	extern void ndisc_send_rs(struct net_device *dev,
	93	struct in6_addr *saddr,
	94	struct in6_addr *daddr);
	95
	96	extern void ndisc_forwarding_on(void);
	97	extern void ndisc_forwarding_off(void);
	98
	99	extern void ndisc_send_redirect(struct sk_buff *skb,
	100	struct neighbour *neigh,
	101	struct in6_addr *target);
	102
	103	extern int ndisc_mc_map(struct in6_addr addr, char buf, struct net_device *dev, int dir);
	104
	105
1da177e4 LT	106
	107	/*
	108	* IGMP
	109	*/
9b0f976f	110	extern int igmp6_init(void);
1da177e4 LT	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