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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 Viroe69a4ad2006-11-14 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070041extern void ip6_route_input(struct sk_buff *skb);
42
Daniel Lezcano4591db42008-03-05 10:48:10 -080043extern struct dst_entry * ip6_route_output(struct net *net,
44 struct sock *sk,
Linus Torvalds1da177e2005-04-16 15:20:36 -070045 struct flowi *fl);
46
Daniel Lezcano433d49c2007-12-07 00:43:48 -080047extern int ip6_route_init(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -070048extern void ip6_route_cleanup(void);
49
Daniel Lezcano55786892008-03-04 13:47:47 -080050extern int ipv6_route_ioctl(struct net *net,
51 unsigned int cmd,
52 void __user *arg);
Linus Torvalds1da177e2005-04-16 15:20:36 -070053
Thomas Graf86872cb2006-08-22 00:01:08 -070054extern int ip6_route_add(struct fib6_config *cfg);
Thomas Graf40e22e82006-08-22 00:00:45 -070055extern int ip6_ins_rt(struct rt6_info *);
Thomas Grafe0a1ad732006-08-22 00:00:21 -070056extern int ip6_del_rt(struct rt6_info *);
Linus Torvalds1da177e2005-04-16 15:20:36 -070057
Daniel Lezcano606a2b42008-03-04 13:45:59 -080058extern struct rt6_info *rt6_lookup(struct net *net,
YOSHIFUJI Hideaki9acd9f32008-04-10 15:42:10 +090059 const struct in6_addr *daddr,
60 const struct in6_addr *saddr,
Linus Torvalds1da177e2005-04-16 15:20:36 -070061 int oif, int flags);
62
YOSHIFUJI Hideaki3b009442007-12-06 16:11:48 -080063extern struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
Linus Torvalds1da177e2005-04-16 15:20:36 -070064 struct neighbour *neigh,
YOSHIFUJI Hideaki9acd9f32008-04-10 15:42:10 +090065 const struct in6_addr *addr);
Stephen Hemminger3d0f24a2008-07-22 14:35:50 -070066extern int icmp6_dst_gc(void);
YOSHIFUJI Hideaki3b009442007-12-06 16:11:48 -080067
Daniel Lezcano63152fc2008-03-03 23:31:11 -080068extern void fib6_force_start_gc(struct net *net);
Linus Torvalds1da177e2005-04-16 15:20:36 -070069
70extern struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
71 const struct in6_addr *addr,
72 int anycast);
73
YOSHIFUJI Hideaki6b75d092008-03-10 06:00:30 -040074extern int ip6_dst_hoplimit(struct dst_entry *dst);
75
Linus Torvalds1da177e2005-04-16 15:20:36 -070076/*
77 * support functions for ND
78 *
79 */
80extern struct rt6_info * rt6_get_dflt_router(struct in6_addr *addr,
81 struct net_device *dev);
82extern struct rt6_info * rt6_add_dflt_router(struct in6_addr *gwaddr,
YOSHIFUJI Hideakiebacaaa2006-03-20 17:04:53 -080083 struct net_device *dev,
84 unsigned int pref);
Linus Torvalds1da177e2005-04-16 15:20:36 -070085
Daniel Lezcano7b4da532008-03-04 13:47:14 -080086extern void rt6_purge_dflt_routers(struct net *net);
Linus Torvalds1da177e2005-04-16 15:20:36 -070087
YOSHIFUJI Hideaki70ceb4f2006-03-20 17:06:24 -080088extern int rt6_route_rcv(struct net_device *dev,
89 u8 *opt, int len,
90 struct in6_addr *gwaddr);
91
Linus Torvalds1da177e2005-04-16 15:20:36 -070092extern void rt6_redirect(struct in6_addr *dest,
YOSHIFUJI Hideaki5e032e32006-08-23 17:12:24 -070093 struct in6_addr *src,
Linus Torvalds1da177e2005-04-16 15:20:36 -070094 struct in6_addr *saddr,
95 struct neighbour *neigh,
96 u8 *lladdr,
97 int on_link);
98
99extern void rt6_pmtu_discovery(struct in6_addr *daddr,
100 struct in6_addr *saddr,
101 struct net_device *dev,
102 u32 pmtu);
103
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104struct netlink_callback;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105
Eric Dumazetfd2c3ef2009-11-03 03:26:03 +0000106struct rt6_rtnl_dump_arg {
Patrick McHardy1b43af52006-08-10 23:11:17 -0700107 struct sk_buff *skb;
108 struct netlink_callback *cb;
Brian Haley191cd582008-08-14 15:33:21 -0700109 struct net *net;
Patrick McHardy1b43af52006-08-10 23:11:17 -0700110};
111
112extern int rt6_dump_route(struct rt6_info *rt, void *p_arg);
Daniel Lezcanof3db4852008-03-03 23:27:06 -0800113extern void rt6_ifdown(struct net *net, struct net_device *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700114extern void rt6_mtu_change(struct net_device *dev, unsigned mtu);
115
Linus Torvalds1da177e2005-04-16 15:20:36 -0700116
117/*
118 * Store a destination cache entry in a socket
119 */
Herbert Xu497c6152006-07-30 20:19:33 -0700120static inline void __ip6_dst_store(struct sock *sk, struct dst_entry *dst,
YOSHIFUJI Hideaki8e1ef0a2006-08-29 17:15:09 -0700121 struct in6_addr *daddr, struct in6_addr *saddr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122{
123 struct ipv6_pinfo *np = inet6_sk(sk);
124 struct rt6_info *rt = (struct rt6_info *) dst;
125
Herbert Xuf83ef8c2006-06-30 13:37:03 -0700126 sk_setup_caps(sk, dst);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127 np->daddr_cache = daddr;
YOSHIFUJI Hideaki8e1ef0a2006-08-29 17:15:09 -0700128#ifdef CONFIG_IPV6_SUBTREES
129 np->saddr_cache = saddr;
130#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131 np->dst_cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0;
Herbert Xu497c6152006-07-30 20:19:33 -0700132}
133
134static inline void ip6_dst_store(struct sock *sk, struct dst_entry *dst,
YOSHIFUJI Hideaki8e1ef0a2006-08-29 17:15:09 -0700135 struct in6_addr *daddr, struct in6_addr *saddr)
Herbert Xu497c6152006-07-30 20:19:33 -0700136{
137 write_lock(&sk->sk_dst_lock);
YOSHIFUJI Hideaki8e1ef0a2006-08-29 17:15:09 -0700138 __ip6_dst_store(sk, dst, daddr, saddr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700139 write_unlock(&sk->sk_dst_lock);
140}
141
142static inline int ipv6_unicast_destination(struct sk_buff *skb)
143{
Eric Dumazetadf30902009-06-02 05:19:30 +0000144 struct rt6_info *rt = (struct rt6_info *) skb_dst(skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145
146 return rt->rt6i_flags & RTF_LOCAL;
147}
148
149#endif
150#endif