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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef _NET_IP6_ROUTE_H
2#define _NET_IP6_ROUTE_H
3
Linus Torvalds1da177e2005-04-16 15:20:36 -07004#define IP6_RT_PRIO_USER 1024
5#define IP6_RT_PRIO_ADDRCONF 256
6#define IP6_RT_PRIO_KERN 512
Linus Torvalds1da177e2005-04-16 15:20:36 -07007
YOSHIFUJI Hideaki70ceb4f2006-03-20 17:06:24 -08008struct 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
Al Viroe69a4adc2006-11-14 20:56:00 -080021 __be32 lifetime;
YOSHIFUJI Hideaki70ceb4f2006-03-20 17:06:24 -080022 __u8 prefix[0]; /* 0,8 or 16 */
23};
24
Linus Torvalds1da177e2005-04-16 15:20:36 -070025#ifdef __KERNEL__
26
27#include <net/flow.h>
28#include <net/ip6_fib.h>
29#include <net/sock.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070030#include <linux/ip.h>
31#include <linux/ipv6.h>
32
YOSHIFUJI Hideaki7cbca672008-03-25 09:37:42 +090033#define RT6_LOOKUP_F_IFACE 0x00000001
34#define RT6_LOOKUP_F_REACHABLE 0x00000002
35#define RT6_LOOKUP_F_HAS_SADDR 0x00000004
36#define RT6_LOOKUP_F_SRCPREF_TMP 0x00000008
37#define RT6_LOOKUP_F_SRCPREF_PUBLIC 0x00000010
38#define RT6_LOOKUP_F_SRCPREF_COA 0x00000020
YOSHIFUJI Hideaki77d16f42006-08-23 17:25:05 -070039
Linus Torvalds1da177e2005-04-16 15:20:36 -070040
Thomas Graf101367c2006-08-04 03:39:02 -070041#ifdef CONFIG_IPV6_MULTIPLE_TABLES
Daniel Lezcanobdb32892008-03-04 13:48:10 -080042extern struct rt6_info *ip6_prohibit_entry;
43extern struct rt6_info *ip6_blk_hole_entry;
Thomas Graf101367c2006-08-04 03:39:02 -070044#endif
45
Linus Torvalds1da177e2005-04-16 15:20:36 -070046extern void ip6_route_input(struct sk_buff *skb);
47
Daniel Lezcano4591db42008-03-05 10:48:10 -080048extern struct dst_entry * ip6_route_output(struct net *net,
49 struct sock *sk,
Linus Torvalds1da177e2005-04-16 15:20:36 -070050 struct flowi *fl);
51
Daniel Lezcano433d49c2007-12-07 00:43:48 -080052extern int ip6_route_init(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -070053extern void ip6_route_cleanup(void);
54
Daniel Lezcano55786892008-03-04 13:47:47 -080055extern int ipv6_route_ioctl(struct net *net,
56 unsigned int cmd,
57 void __user *arg);
Linus Torvalds1da177e2005-04-16 15:20:36 -070058
Thomas Graf86872cb2006-08-22 00:01:08 -070059extern int ip6_route_add(struct fib6_config *cfg);
Thomas Graf40e22e82006-08-22 00:00:45 -070060extern int ip6_ins_rt(struct rt6_info *);
Thomas Grafe0a1ad732006-08-22 00:00:21 -070061extern int ip6_del_rt(struct rt6_info *);
Linus Torvalds1da177e2005-04-16 15:20:36 -070062
Daniel Lezcano606a2b42008-03-04 13:45:59 -080063extern struct rt6_info *rt6_lookup(struct net *net,
YOSHIFUJI Hideaki9acd9f32008-04-10 15:42:10 +090064 const struct in6_addr *daddr,
65 const struct in6_addr *saddr,
Linus Torvalds1da177e2005-04-16 15:20:36 -070066 int oif, int flags);
67
YOSHIFUJI Hideaki3b009442007-12-06 16:11:48 -080068extern struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
Linus Torvalds1da177e2005-04-16 15:20:36 -070069 struct neighbour *neigh,
YOSHIFUJI Hideaki9acd9f32008-04-10 15:42:10 +090070 const struct in6_addr *addr);
YOSHIFUJI Hideaki3b009442007-12-06 16:11:48 -080071extern int icmp6_dst_gc(int *more);
72
Daniel Lezcano63152fc2008-03-03 23:31:11 -080073extern void fib6_force_start_gc(struct net *net);
Linus Torvalds1da177e2005-04-16 15:20:36 -070074
75extern struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
76 const struct in6_addr *addr,
77 int anycast);
78
YOSHIFUJI Hideaki6b75d092008-03-10 06:00:30 -040079extern int ip6_dst_hoplimit(struct dst_entry *dst);
80
Linus Torvalds1da177e2005-04-16 15:20:36 -070081/*
82 * support functions for ND
83 *
84 */
85extern struct rt6_info * rt6_get_dflt_router(struct in6_addr *addr,
86 struct net_device *dev);
87extern struct rt6_info * rt6_add_dflt_router(struct in6_addr *gwaddr,
YOSHIFUJI Hideakiebacaaa2006-03-20 17:04:53 -080088 struct net_device *dev,
89 unsigned int pref);
Linus Torvalds1da177e2005-04-16 15:20:36 -070090
Daniel Lezcano7b4da532008-03-04 13:47:14 -080091extern void rt6_purge_dflt_routers(struct net *net);
Linus Torvalds1da177e2005-04-16 15:20:36 -070092
YOSHIFUJI Hideaki70ceb4f2006-03-20 17:06:24 -080093extern int rt6_route_rcv(struct net_device *dev,
94 u8 *opt, int len,
95 struct in6_addr *gwaddr);
96
Linus Torvalds1da177e2005-04-16 15:20:36 -070097extern void rt6_redirect(struct in6_addr *dest,
YOSHIFUJI Hideaki5e032e32006-08-23 17:12:24 -070098 struct in6_addr *src,
Linus Torvalds1da177e2005-04-16 15:20:36 -070099 struct in6_addr *saddr,
100 struct neighbour *neigh,
101 u8 *lladdr,
102 int on_link);
103
104extern void rt6_pmtu_discovery(struct in6_addr *daddr,
105 struct in6_addr *saddr,
106 struct net_device *dev,
107 u32 pmtu);
108
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109struct netlink_callback;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110
Patrick McHardy1b43af52006-08-10 23:11:17 -0700111struct rt6_rtnl_dump_arg
112{
113 struct sk_buff *skb;
114 struct netlink_callback *cb;
115};
116
117extern int rt6_dump_route(struct rt6_info *rt, void *p_arg);
Daniel Lezcanof3db4852008-03-03 23:27:06 -0800118extern void rt6_ifdown(struct net *net, struct net_device *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119extern void rt6_mtu_change(struct net_device *dev, unsigned mtu);
120
121extern rwlock_t rt6_lock;
122
123/*
124 * Store a destination cache entry in a socket
125 */
Herbert Xu497c6152006-07-30 20:19:33 -0700126static inline void __ip6_dst_store(struct sock *sk, struct dst_entry *dst,
YOSHIFUJI Hideaki8e1ef0a2006-08-29 17:15:09 -0700127 struct in6_addr *daddr, struct in6_addr *saddr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700128{
129 struct ipv6_pinfo *np = inet6_sk(sk);
130 struct rt6_info *rt = (struct rt6_info *) dst;
131
Herbert Xuf83ef8c2006-06-30 13:37:03 -0700132 sk_setup_caps(sk, dst);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133 np->daddr_cache = daddr;
YOSHIFUJI Hideaki8e1ef0a2006-08-29 17:15:09 -0700134#ifdef CONFIG_IPV6_SUBTREES
135 np->saddr_cache = saddr;
136#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700137 np->dst_cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0;
Herbert Xu497c6152006-07-30 20:19:33 -0700138}
139
140static inline void ip6_dst_store(struct sock *sk, struct dst_entry *dst,
YOSHIFUJI Hideaki8e1ef0a2006-08-29 17:15:09 -0700141 struct in6_addr *daddr, struct in6_addr *saddr)
Herbert Xu497c6152006-07-30 20:19:33 -0700142{
143 write_lock(&sk->sk_dst_lock);
YOSHIFUJI Hideaki8e1ef0a2006-08-29 17:15:09 -0700144 __ip6_dst_store(sk, dst, daddr, saddr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145 write_unlock(&sk->sk_dst_lock);
146}
147
148static inline int ipv6_unicast_destination(struct sk_buff *skb)
149{
150 struct rt6_info *rt = (struct rt6_info *) skb->dst;
151
152 return rt->rt6i_flags & RTF_LOCAL;
153}
154
155#endif
156#endif