[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 net *net,
					    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(struct net *net);

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 *net, 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
606a2b48 DL	72	extern struct rt6_info rt6_lookup(struct net net,
606a2b48 DL	73	struct in6_addr *daddr,
1da177e4 LT	74	struct in6_addr *saddr,
	75	int oif, int flags);
	76
3b00944c	77	extern struct dst_entry icmp6_dst_alloc(struct net_device dev,
1da177e4	78	struct neighbour *neigh,
3b00944c YH	79	struct in6_addr *addr);
	80	extern int icmp6_dst_gc(int *more);
	81
63152fc0	82	extern void fib6_force_start_gc(struct net *net);
1da177e4 LT	83
	84	extern struct rt6_info addrconf_dst_alloc(struct inet6_dev idev,
	85	const struct in6_addr *addr,
	86	int anycast);
	87
	88	/*
	89	* support functions for ND
	90	*
	91	*/
	92	extern struct rt6_info * rt6_get_dflt_router(struct in6_addr *addr,
	93	struct net_device *dev);
	94	extern struct rt6_info * rt6_add_dflt_router(struct in6_addr *gwaddr,
ebacaaa0 YH	95	struct net_device *dev,
ebacaaa0 YH	96	unsigned int pref);
1da177e4 LT	97
	98	extern void rt6_purge_dflt_routers(void);
	99
70ceb4f5 YH	100	extern int rt6_route_rcv(struct net_device *dev,
	101	u8 *opt, int len,
	102	struct in6_addr *gwaddr);
	103
1da177e4	104	extern void rt6_redirect(struct in6_addr *dest,
5e032e32	105	struct in6_addr *src,
1da177e4 LT	106	struct in6_addr *saddr,
	107	struct neighbour *neigh,
	108	u8 *lladdr,
	109	int on_link);
	110
	111	extern void rt6_pmtu_discovery(struct in6_addr *daddr,
	112	struct in6_addr *saddr,
	113	struct net_device *dev,
	114	u32 pmtu);
	115
1da177e4	116	struct netlink_callback;
1da177e4	117
1b43af54 PM	118	struct rt6_rtnl_dump_arg
	119	{
	120	struct sk_buff *skb;
	121	struct netlink_callback *cb;
	122	};
	123
	124	extern int rt6_dump_route(struct rt6_info rt, void p_arg);
f3db4851	125	extern void rt6_ifdown(struct net net, struct net_device dev);
1da177e4 LT	126	extern void rt6_mtu_change(struct net_device *dev, unsigned mtu);
	127
	128	extern rwlock_t rt6_lock;
	129
	130	/*
	131	* Store a destination cache entry in a socket
	132	*/
497c615a	133	static inline void __ip6_dst_store(struct sock sk, struct dst_entry dst,
8e1ef0a9	134	struct in6_addr daddr, struct in6_addr saddr)
1da177e4 LT	135	{
	136	struct ipv6_pinfo *np = inet6_sk(sk);
	137	struct rt6_info rt = (struct rt6_info ) dst;
	138
f83ef8c0	139	sk_setup_caps(sk, dst);
1da177e4	140	np->daddr_cache = daddr;
8e1ef0a9 YH	141	#ifdef CONFIG_IPV6_SUBTREES
	142	np->saddr_cache = saddr;
	143	#endif
1da177e4	144	np->dst_cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0;
497c615a HX	145	}
	146
	147	static inline void ip6_dst_store(struct sock sk, struct dst_entry dst,
8e1ef0a9	148	struct in6_addr daddr, struct in6_addr saddr)
497c615a HX	149	{
497c615a HX	150	write_lock(&sk->sk_dst_lock);
8e1ef0a9	151	__ip6_dst_store(sk, dst, daddr, saddr);
1da177e4 LT	152	write_unlock(&sk->sk_dst_lock);
	153	}
	154
	155	static inline int ipv6_unicast_destination(struct sk_buff *skb)
	156	{
	157	struct rt6_info rt = (struct rt6_info ) skb->dst;
	158
	159	return rt->rt6i_flags & RTF_LOCAL;
	160	}
	161
	162	#endif
	163	#endif