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

#ifndef _NET_IP6_ROUTE_H
#define _NET_IP6_ROUTE_H

#define IP6_RT_PRIO_FW		16
#define IP6_RT_PRIO_USER	1024
#define IP6_RT_PRIO_ADDRCONF	256
#define IP6_RT_PRIO_KERN	512
#define IP6_RT_FLOW_MASK	0x00ff

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
	__u32			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>

struct pol_chain {
	int			type;
	int			priority;
	struct fib6_node	*rules;
	struct pol_chain	*next;
};

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 int ip6_rt_gc_interval;

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_me_harder(struct sk_buff *skb);

extern void			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 in6_rtmsg *rtmsg,
					      struct nlmsghdr *,
					      void *rtattr,
					      struct netlink_skb_parms *req,
					      u32 table_id);
extern int			ip6_ins_rt(struct rt6_info *,
					   struct nlmsghdr *,
					   void *rtattr,
					   struct netlink_skb_parms *req);
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 *ndisc_dst_alloc(struct net_device *dev,
					 struct neighbour *neigh,
					 struct in6_addr *addr,
					 int (*output)(struct sk_buff *));
extern int ndisc_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 *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 nlmsghdr;
struct netlink_callback;
extern int inet6_dump_fib(struct sk_buff *skb, struct netlink_callback *cb);
extern int inet6_rtm_newroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg);
extern int inet6_rtm_delroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg);
extern int inet6_rtm_getroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg);

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 ipv6_pinfo *np = inet6_sk(sk);
	struct rt6_info *rt = (struct rt6_info *) dst;

	sk_setup_caps(sk, dst);
	np->daddr_cache = daddr;
	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)
{
	write_lock(&sk->sk_dst_lock);
	__ip6_dst_store(sk, dst, daddr);
	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
	4	#define IP6_RT_PRIO_FW 16
	5	#define IP6_RT_PRIO_USER 1024
	6	#define IP6_RT_PRIO_ADDRCONF 256
	7	#define IP6_RT_PRIO_KERN 512
	8	#define IP6_RT_FLOW_MASK 0x00ff
	9
70ceb4f5 YH	10	struct route_info {
	11	__u8 type;
	12	__u8 length;
	13	__u8 prefix_len;
	14	#if defined(__BIG_ENDIAN_BITFIELD)
	15	__u8 reserved_h:3,
	16	route_pref:2,
	17	reserved_l:3;
	18	#elif defined(__LITTLE_ENDIAN_BITFIELD)
	19	__u8 reserved_l:3,
	20	route_pref:2,
	21	reserved_h:3;
	22	#endif
	23	__u32 lifetime;
	24	__u8 prefix[0]; /* 0,8 or 16 */
	25	};
	26
1da177e4 LT	27	#ifdef __KERNEL__
	28
	29	#include <net/flow.h>
	30	#include <net/ip6_fib.h>
	31	#include <net/sock.h>
1da177e4 LT	32	#include <linux/ip.h>
	33	#include <linux/ipv6.h>
	34
	35	struct pol_chain {
	36	int type;
	37	int priority;
	38	struct fib6_node *rules;
	39	struct pol_chain *next;
	40	};
	41
	42	extern struct rt6_info ip6_null_entry;
	43
101367c2 TG	44	#ifdef CONFIG_IPV6_MULTIPLE_TABLES
	45	extern struct rt6_info ip6_prohibit_entry;
	46	extern struct rt6_info ip6_blk_hole_entry;
	47	#endif
	48
1da177e4 LT	49	extern int ip6_rt_gc_interval;
	50
	51	extern void ip6_route_input(struct sk_buff *skb);
	52
	53	extern struct dst_entry * ip6_route_output(struct sock *sk,
	54	struct flowi *fl);
	55
	56	extern int ip6_route_me_harder(struct sk_buff *skb);
	57
	58	extern void ip6_route_init(void);
	59	extern void ip6_route_cleanup(void);
	60
	61	extern int ipv6_route_ioctl(unsigned int cmd, void __user *arg);
	62
	63	extern int ip6_route_add(struct in6_rtmsg *rtmsg,
	64	struct nlmsghdr *,
0d51aa80	65	void *rtattr,
c71099ac TG	66	struct netlink_skb_parms *req,
c71099ac TG	67	u32 table_id);
1da177e4 LT	68	extern int ip6_ins_rt(struct rt6_info *,
1da177e4 LT	69	struct nlmsghdr *,
0d51aa80 JHS	70	void *rtattr,
0d51aa80 JHS	71	struct netlink_skb_parms *req);
e0a1ad73	72	extern int ip6_del_rt(struct rt6_info *);
1da177e4 LT	73
	74	extern int ip6_rt_addr_add(struct in6_addr *addr,
	75	struct net_device *dev,
	76	int anycast);
	77
	78	extern int ip6_rt_addr_del(struct in6_addr *addr,
	79	struct net_device *dev);
	80
	81	extern void rt6_sndmsg(int type, struct in6_addr *dst,
	82	struct in6_addr *src,
	83	struct in6_addr *gw,
	84	struct net_device *dev,
	85	int dstlen, int srclen,
	86	int metric, __u32 flags);
	87
	88	extern struct rt6_info rt6_lookup(struct in6_addr daddr,
	89	struct in6_addr *saddr,
	90	int oif, int flags);
	91
	92	extern struct dst_entry ndisc_dst_alloc(struct net_device dev,
	93	struct neighbour *neigh,
	94	struct in6_addr *addr,
	95	int (output)(struct sk_buff ));
	96	extern int ndisc_dst_gc(int *more);
	97	extern void fib6_force_start_gc(void);
	98
	99	extern struct rt6_info addrconf_dst_alloc(struct inet6_dev idev,
	100	const struct in6_addr *addr,
	101	int anycast);
	102
	103	/*
	104	* support functions for ND
	105	*
	106	*/
	107	extern struct rt6_info * rt6_get_dflt_router(struct in6_addr *addr,
	108	struct net_device *dev);
	109	extern struct rt6_info * rt6_add_dflt_router(struct in6_addr *gwaddr,
ebacaaa0 YH	110	struct net_device *dev,
ebacaaa0 YH	111	unsigned int pref);
1da177e4 LT	112
	113	extern void rt6_purge_dflt_routers(void);
	114
70ceb4f5 YH	115	extern int rt6_route_rcv(struct net_device *dev,
	116	u8 *opt, int len,
	117	struct in6_addr *gwaddr);
	118
1da177e4 LT	119	extern void rt6_redirect(struct in6_addr *dest,
	120	struct in6_addr *saddr,
	121	struct neighbour *neigh,
	122	u8 *lladdr,
	123	int on_link);
	124
	125	extern void rt6_pmtu_discovery(struct in6_addr *daddr,
	126	struct in6_addr *saddr,
	127	struct net_device *dev,
	128	u32 pmtu);
	129
	130	struct nlmsghdr;
	131	struct netlink_callback;
	132	extern int inet6_dump_fib(struct sk_buff skb, struct netlink_callback cb);
	133	extern int inet6_rtm_newroute(struct sk_buff skb, struct nlmsghdr nlh, void *arg);
	134	extern int inet6_rtm_delroute(struct sk_buff skb, struct nlmsghdr nlh, void *arg);
	135	extern int inet6_rtm_getroute(struct sk_buff skb, struct nlmsghdr nlh, void *arg);
	136
1b43af54 PM	137	struct rt6_rtnl_dump_arg
	138	{
	139	struct sk_buff *skb;
	140	struct netlink_callback *cb;
	141	};
	142
	143	extern int rt6_dump_route(struct rt6_info rt, void p_arg);
1da177e4 LT	144	extern void rt6_ifdown(struct net_device *dev);
	145	extern void rt6_mtu_change(struct net_device *dev, unsigned mtu);
	146
	147	extern rwlock_t rt6_lock;
	148
	149	/*
	150	* Store a destination cache entry in a socket
	151	*/
497c615a HX	152	static inline void __ip6_dst_store(struct sock sk, struct dst_entry dst,
497c615a HX	153	struct in6_addr *daddr)
1da177e4 LT	154	{
	155	struct ipv6_pinfo *np = inet6_sk(sk);
	156	struct rt6_info rt = (struct rt6_info ) dst;
	157
f83ef8c0	158	sk_setup_caps(sk, dst);
1da177e4 LT	159	np->daddr_cache = daddr;
1da177e4 LT	160	np->dst_cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0;
497c615a HX	161	}
	162
	163	static inline void ip6_dst_store(struct sock sk, struct dst_entry dst,
	164	struct in6_addr *daddr)
	165	{
	166	write_lock(&sk->sk_dst_lock);
	167	__ip6_dst_store(sk, dst, daddr);
1da177e4 LT	168	write_unlock(&sk->sk_dst_lock);
	169	}
	170
	171	static inline int ipv6_unicast_destination(struct sk_buff *skb)
	172	{
	173	struct rt6_info rt = (struct rt6_info ) skb->dst;
	174
	175	return rt->rt6i_flags & RTF_LOCAL;
	176	}
	177
	178	#endif
	179	#endif