[deliverable/linux.git] / include / net / ip6_route.h

#ifndef _NET_IP6_ROUTE_H
#define _NET_IP6_ROUTE_H

#define IP6_RT_PRIO_USER	1024
#define IP6_RT_PRIO_ADDRCONF	256
#define IP6_RT_PRIO_KERN	512

struct route_info {
	__u8			type;
	__u8			length;
	__u8			prefix_len;
#if defined(__BIG_ENDIAN_BITFIELD)
	__u8			reserved_h:3,
				route_pref:2,
				reserved_l:3;
#elif defined(__LITTLE_ENDIAN_BITFIELD)
	__u8			reserved_l:3,
				route_pref:2,
				reserved_h:3;
#endif
	__be32			lifetime;
	__u8			prefix[0];	/* 0,8 or 16 */
};

#ifdef __KERNEL__

#include <net/flow.h>
#include <net/ip6_fib.h>
#include <net/sock.h>
#include <linux/ip.h>
#include <linux/ipv6.h>

#define RT6_LOOKUP_F_IFACE	0x1
#define RT6_LOOKUP_F_REACHABLE	0x2
#define RT6_LOOKUP_F_HAS_SADDR	0x4

extern struct rt6_info	ip6_null_entry;

#ifdef CONFIG_IPV6_MULTIPLE_TABLES
extern struct rt6_info	ip6_prohibit_entry;
extern struct rt6_info	ip6_blk_hole_entry;
#endif

extern void			ip6_route_input(struct sk_buff *skb);

extern struct dst_entry *	ip6_route_output(struct sock *sk,
						 struct flowi *fl);

extern int			ip6_route_init(void);
extern void			ip6_route_cleanup(void);

extern int			ipv6_route_ioctl(unsigned int cmd, void __user *arg);

extern int			ip6_route_add(struct fib6_config *cfg);
extern int			ip6_ins_rt(struct rt6_info *);
extern int			ip6_del_rt(struct rt6_info *);

extern int			ip6_rt_addr_add(struct in6_addr *addr,
						struct net_device *dev,
						int anycast);

extern int			ip6_rt_addr_del(struct in6_addr *addr,
						struct net_device *dev);

extern void			rt6_sndmsg(int type, struct in6_addr *dst,
					   struct in6_addr *src,
					   struct in6_addr *gw,
					   struct net_device *dev, 
					   int dstlen, int srclen,
					   int metric, __u32 flags);

extern struct rt6_info		*rt6_lookup(struct in6_addr *daddr,
					    struct in6_addr *saddr,
					    int oif, int flags);

extern struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
					 struct neighbour *neigh,
					 struct in6_addr *addr);
extern int icmp6_dst_gc(int *more);

extern void fib6_force_start_gc(void);

extern struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
					   const struct in6_addr *addr,
					   int anycast);

/*
 *	support functions for ND
 *
 */
extern struct rt6_info *	rt6_get_dflt_router(struct in6_addr *addr,
						    struct net_device *dev);
extern struct rt6_info *	rt6_add_dflt_router(struct in6_addr *gwaddr,
						    struct net_device *dev,
						    unsigned int pref);

extern void			rt6_purge_dflt_routers(void);

extern int			rt6_route_rcv(struct net_device *dev,
					      u8 *opt, int len,
					      struct in6_addr *gwaddr);

extern void			rt6_redirect(struct in6_addr *dest,
					     struct in6_addr *src,
					     struct in6_addr *saddr,
					     struct neighbour *neigh,
					     u8 *lladdr,
					     int on_link);

extern void			rt6_pmtu_discovery(struct in6_addr *daddr,
						   struct in6_addr *saddr,
						   struct net_device *dev,
						   u32 pmtu);

struct netlink_callback;

struct rt6_rtnl_dump_arg
{
	struct sk_buff *skb;
	struct netlink_callback *cb;
};

extern int rt6_dump_route(struct rt6_info *rt, void *p_arg);
extern void rt6_ifdown(struct net_device *dev);
extern void rt6_mtu_change(struct net_device *dev, unsigned mtu);

extern rwlock_t rt6_lock;

/*
 *	Store a destination cache entry in a socket
 */
static inline void __ip6_dst_store(struct sock *sk, struct dst_entry *dst,
				   struct in6_addr *daddr, struct in6_addr *saddr)
{
	struct ipv6_pinfo *np = inet6_sk(sk);
	struct rt6_info *rt = (struct rt6_info *) dst;

	sk_setup_caps(sk, dst);
	np->daddr_cache = daddr;
#ifdef CONFIG_IPV6_SUBTREES
	np->saddr_cache = saddr;
#endif
	np->dst_cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0;
}

static inline void ip6_dst_store(struct sock *sk, struct dst_entry *dst,
				 struct in6_addr *daddr, struct in6_addr *saddr)
{
	write_lock(&sk->sk_dst_lock);
	__ip6_dst_store(sk, dst, daddr, saddr);
	write_unlock(&sk->sk_dst_lock);
}

static inline int ipv6_unicast_destination(struct sk_buff *skb)
{
	struct rt6_info *rt = (struct rt6_info *) skb->dst;

	return rt->rt6i_flags & RTF_LOCAL;
}

#endif
#endif
Commit	Line	Data
1da177e4 LT	1	#ifndef _NET_IP6_ROUTE_H
	2	#define _NET_IP6_ROUTE_H
	3
1da177e4 LT	4	#define IP6_RT_PRIO_USER 1024
	5	#define IP6_RT_PRIO_ADDRCONF 256
	6	#define IP6_RT_PRIO_KERN 512
1da177e4	7
70ceb4f5 YH	8	struct route_info {
	9	__u8 type;
	10	__u8 length;
	11	__u8 prefix_len;
	12	#if defined(__BIG_ENDIAN_BITFIELD)
	13	__u8 reserved_h:3,
	14	route_pref:2,
	15	reserved_l:3;
	16	#elif defined(__LITTLE_ENDIAN_BITFIELD)
	17	__u8 reserved_l:3,
	18	route_pref:2,
	19	reserved_h:3;
	20	#endif
e69a4adc	21	__be32 lifetime;
70ceb4f5 YH	22	__u8 prefix[0]; /* 0,8 or 16 */
	23	};
	24
1da177e4 LT	25	#ifdef __KERNEL__
	26
	27	#include <net/flow.h>
	28	#include <net/ip6_fib.h>
	29	#include <net/sock.h>
1da177e4 LT	30	#include <linux/ip.h>
	31	#include <linux/ipv6.h>
	32
77d16f45 YH	33	#define RT6_LOOKUP_F_IFACE 0x1
	34	#define RT6_LOOKUP_F_REACHABLE 0x2
	35	#define RT6_LOOKUP_F_HAS_SADDR 0x4
	36
1da177e4 LT	37	extern struct rt6_info ip6_null_entry;
1da177e4 LT	38
101367c2 TG	39	#ifdef CONFIG_IPV6_MULTIPLE_TABLES
	40	extern struct rt6_info ip6_prohibit_entry;
	41	extern struct rt6_info ip6_blk_hole_entry;
	42	#endif
	43
1da177e4 LT	44	extern void ip6_route_input(struct sk_buff *skb);
	45
	46	extern struct dst_entry * ip6_route_output(struct sock *sk,
	47	struct flowi *fl);
	48
433d49c3	49	extern int ip6_route_init(void);
1da177e4 LT	50	extern void ip6_route_cleanup(void);
	51
	52	extern int ipv6_route_ioctl(unsigned int cmd, void __user *arg);
	53
86872cb5	54	extern int ip6_route_add(struct fib6_config *cfg);
40e22e8f	55	extern int ip6_ins_rt(struct rt6_info *);
e0a1ad73	56	extern int ip6_del_rt(struct rt6_info *);
1da177e4 LT	57
	58	extern int ip6_rt_addr_add(struct in6_addr *addr,
	59	struct net_device *dev,
	60	int anycast);
	61
	62	extern int ip6_rt_addr_del(struct in6_addr *addr,
	63	struct net_device *dev);
	64
	65	extern void rt6_sndmsg(int type, struct in6_addr *dst,
	66	struct in6_addr *src,
	67	struct in6_addr *gw,
	68	struct net_device *dev,
	69	int dstlen, int srclen,
	70	int metric, __u32 flags);
	71
	72	extern struct rt6_info rt6_lookup(struct in6_addr daddr,
	73	struct in6_addr *saddr,
	74	int oif, int flags);
	75
3b00944c	76	extern struct dst_entry icmp6_dst_alloc(struct net_device dev,
1da177e4	77	struct neighbour *neigh,
3b00944c YH	78	struct in6_addr *addr);
	79	extern int icmp6_dst_gc(int *more);
	80
1da177e4 LT	81	extern void fib6_force_start_gc(void);
	82
	83	extern struct rt6_info addrconf_dst_alloc(struct inet6_dev idev,
	84	const struct in6_addr *addr,
	85	int anycast);
	86
	87	/*
	88	* support functions for ND
	89	*
	90	*/
	91	extern struct rt6_info * rt6_get_dflt_router(struct in6_addr *addr,
	92	struct net_device *dev);
	93	extern struct rt6_info * rt6_add_dflt_router(struct in6_addr *gwaddr,
ebacaaa0 YH	94	struct net_device *dev,
ebacaaa0 YH	95	unsigned int pref);
1da177e4 LT	96
	97	extern void rt6_purge_dflt_routers(void);
	98
70ceb4f5 YH	99	extern int rt6_route_rcv(struct net_device *dev,
	100	u8 *opt, int len,
	101	struct in6_addr *gwaddr);
	102
1da177e4	103	extern void rt6_redirect(struct in6_addr *dest,
5e032e32	104	struct in6_addr *src,
1da177e4 LT	105	struct in6_addr *saddr,
	106	struct neighbour *neigh,
	107	u8 *lladdr,
	108	int on_link);
	109
	110	extern void rt6_pmtu_discovery(struct in6_addr *daddr,
	111	struct in6_addr *saddr,
	112	struct net_device *dev,
	113	u32 pmtu);
	114
1da177e4	115	struct netlink_callback;
1da177e4	116
1b43af54 PM	117	struct rt6_rtnl_dump_arg
	118	{
	119	struct sk_buff *skb;
	120	struct netlink_callback *cb;
	121	};
	122
	123	extern int rt6_dump_route(struct rt6_info rt, void p_arg);
1da177e4 LT	124	extern void rt6_ifdown(struct net_device *dev);
	125	extern void rt6_mtu_change(struct net_device *dev, unsigned mtu);
	126
	127	extern rwlock_t rt6_lock;
	128
	129	/*
	130	* Store a destination cache entry in a socket
	131	*/
497c615a	132	static inline void __ip6_dst_store(struct sock sk, struct dst_entry dst,
8e1ef0a9	133	struct in6_addr daddr, struct in6_addr saddr)
1da177e4 LT	134	{
	135	struct ipv6_pinfo *np = inet6_sk(sk);
	136	struct rt6_info rt = (struct rt6_info ) dst;
	137
f83ef8c0	138	sk_setup_caps(sk, dst);
1da177e4	139	np->daddr_cache = daddr;
8e1ef0a9 YH	140	#ifdef CONFIG_IPV6_SUBTREES
	141	np->saddr_cache = saddr;
	142	#endif
1da177e4	143	np->dst_cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0;
497c615a HX	144	}
	145
	146	static inline void ip6_dst_store(struct sock sk, struct dst_entry dst,
8e1ef0a9	147	struct in6_addr daddr, struct in6_addr saddr)
497c615a HX	148	{
497c615a HX	149	write_lock(&sk->sk_dst_lock);
8e1ef0a9	150	__ip6_dst_store(sk, dst, daddr, saddr);
1da177e4 LT	151	write_unlock(&sk->sk_dst_lock);
	152	}
	153
	154	static inline int ipv6_unicast_destination(struct sk_buff *skb)
	155	{
	156	struct rt6_info rt = (struct rt6_info ) skb->dst;
	157
	158	return rt->rt6i_flags & RTF_LOCAL;
	159	}
	160
	161	#endif
	162	#endif