Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #ifndef _NET_IP6_ROUTE_H |
| 2 | #define _NET_IP6_ROUTE_H |
| 3 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | #define IP6_RT_PRIO_USER 1024 |
| 5 | #define IP6_RT_PRIO_ADDRCONF 256 |
| 6 | #define IP6_RT_PRIO_KERN 512 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | |
YOSHIFUJI Hideaki | 70ceb4f | 2006-03-20 17:06:24 -0800 | [diff] [blame] | 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 |
Al Viro | e69a4adc | 2006-11-14 20:56:00 -0800 | [diff] [blame] | 21 | __be32 lifetime; |
YOSHIFUJI Hideaki | 70ceb4f | 2006-03-20 17:06:24 -0800 | [diff] [blame] | 22 | __u8 prefix[0]; /* 0,8 or 16 */ |
| 23 | }; |
| 24 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | #ifdef __KERNEL__ |
| 26 | |
| 27 | #include <net/flow.h> |
| 28 | #include <net/ip6_fib.h> |
| 29 | #include <net/sock.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | #include <linux/ip.h> |
| 31 | #include <linux/ipv6.h> |
| 32 | |
YOSHIFUJI Hideaki | 7cbca67 | 2008-03-25 09:37:42 +0900 | [diff] [blame] | 33 | #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 Hideaki | 77d16f4 | 2006-08-23 17:25:05 -0700 | [diff] [blame] | 39 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | |
Thomas Graf | 101367c | 2006-08-04 03:39:02 -0700 | [diff] [blame] | 41 | #ifdef CONFIG_IPV6_MULTIPLE_TABLES |
Daniel Lezcano | bdb3289 | 2008-03-04 13:48:10 -0800 | [diff] [blame] | 42 | extern struct rt6_info *ip6_prohibit_entry; |
| 43 | extern struct rt6_info *ip6_blk_hole_entry; |
Thomas Graf | 101367c | 2006-08-04 03:39:02 -0700 | [diff] [blame] | 44 | #endif |
| 45 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | extern void ip6_route_input(struct sk_buff *skb); |
| 47 | |
Daniel Lezcano | 4591db4 | 2008-03-05 10:48:10 -0800 | [diff] [blame] | 48 | extern struct dst_entry * ip6_route_output(struct net *net, |
| 49 | struct sock *sk, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | struct flowi *fl); |
| 51 | |
Daniel Lezcano | 433d49c | 2007-12-07 00:43:48 -0800 | [diff] [blame] | 52 | extern int ip6_route_init(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | extern void ip6_route_cleanup(void); |
| 54 | |
Daniel Lezcano | 5578689 | 2008-03-04 13:47:47 -0800 | [diff] [blame] | 55 | extern int ipv6_route_ioctl(struct net *net, |
| 56 | unsigned int cmd, |
| 57 | void __user *arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | |
Thomas Graf | 86872cb | 2006-08-22 00:01:08 -0700 | [diff] [blame] | 59 | extern int ip6_route_add(struct fib6_config *cfg); |
Thomas Graf | 40e22e8 | 2006-08-22 00:00:45 -0700 | [diff] [blame] | 60 | extern int ip6_ins_rt(struct rt6_info *); |
Thomas Graf | e0a1ad73 | 2006-08-22 00:00:21 -0700 | [diff] [blame] | 61 | extern int ip6_del_rt(struct rt6_info *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | |
Daniel Lezcano | 606a2b4 | 2008-03-04 13:45:59 -0800 | [diff] [blame] | 63 | extern struct rt6_info *rt6_lookup(struct net *net, |
YOSHIFUJI Hideaki | 9acd9f3 | 2008-04-10 15:42:10 +0900 | [diff] [blame] | 64 | const struct in6_addr *daddr, |
| 65 | const struct in6_addr *saddr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | int oif, int flags); |
| 67 | |
YOSHIFUJI Hideaki | 3b00944 | 2007-12-06 16:11:48 -0800 | [diff] [blame] | 68 | extern struct dst_entry *icmp6_dst_alloc(struct net_device *dev, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | struct neighbour *neigh, |
YOSHIFUJI Hideaki | 9acd9f3 | 2008-04-10 15:42:10 +0900 | [diff] [blame] | 70 | const struct in6_addr *addr); |
Stephen Hemminger | 3d0f24a | 2008-07-22 14:35:50 -0700 | [diff] [blame] | 71 | extern int icmp6_dst_gc(void); |
YOSHIFUJI Hideaki | 3b00944 | 2007-12-06 16:11:48 -0800 | [diff] [blame] | 72 | |
Daniel Lezcano | 63152fc | 2008-03-03 23:31:11 -0800 | [diff] [blame] | 73 | extern void fib6_force_start_gc(struct net *net); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | |
| 75 | extern struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev, |
| 76 | const struct in6_addr *addr, |
| 77 | int anycast); |
| 78 | |
YOSHIFUJI Hideaki | 6b75d09 | 2008-03-10 06:00:30 -0400 | [diff] [blame] | 79 | extern int ip6_dst_hoplimit(struct dst_entry *dst); |
| 80 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | /* |
| 82 | * support functions for ND |
| 83 | * |
| 84 | */ |
| 85 | extern struct rt6_info * rt6_get_dflt_router(struct in6_addr *addr, |
| 86 | struct net_device *dev); |
| 87 | extern struct rt6_info * rt6_add_dflt_router(struct in6_addr *gwaddr, |
YOSHIFUJI Hideaki | ebacaaa | 2006-03-20 17:04:53 -0800 | [diff] [blame] | 88 | struct net_device *dev, |
| 89 | unsigned int pref); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | |
Daniel Lezcano | 7b4da53 | 2008-03-04 13:47:14 -0800 | [diff] [blame] | 91 | extern void rt6_purge_dflt_routers(struct net *net); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | |
YOSHIFUJI Hideaki | 70ceb4f | 2006-03-20 17:06:24 -0800 | [diff] [blame] | 93 | extern int rt6_route_rcv(struct net_device *dev, |
| 94 | u8 *opt, int len, |
| 95 | struct in6_addr *gwaddr); |
| 96 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | extern void rt6_redirect(struct in6_addr *dest, |
YOSHIFUJI Hideaki | 5e032e3 | 2006-08-23 17:12:24 -0700 | [diff] [blame] | 98 | struct in6_addr *src, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | struct in6_addr *saddr, |
| 100 | struct neighbour *neigh, |
| 101 | u8 *lladdr, |
| 102 | int on_link); |
| 103 | |
| 104 | extern void rt6_pmtu_discovery(struct in6_addr *daddr, |
| 105 | struct in6_addr *saddr, |
| 106 | struct net_device *dev, |
| 107 | u32 pmtu); |
| 108 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | struct netlink_callback; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | |
Patrick McHardy | 1b43af5 | 2006-08-10 23:11:17 -0700 | [diff] [blame] | 111 | struct rt6_rtnl_dump_arg |
| 112 | { |
| 113 | struct sk_buff *skb; |
| 114 | struct netlink_callback *cb; |
| 115 | }; |
| 116 | |
| 117 | extern int rt6_dump_route(struct rt6_info *rt, void *p_arg); |
Daniel Lezcano | f3db485 | 2008-03-03 23:27:06 -0800 | [diff] [blame] | 118 | extern void rt6_ifdown(struct net *net, struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | extern void rt6_mtu_change(struct net_device *dev, unsigned mtu); |
| 120 | |
| 121 | extern rwlock_t rt6_lock; |
| 122 | |
| 123 | /* |
| 124 | * Store a destination cache entry in a socket |
| 125 | */ |
Herbert Xu | 497c615 | 2006-07-30 20:19:33 -0700 | [diff] [blame] | 126 | static inline void __ip6_dst_store(struct sock *sk, struct dst_entry *dst, |
YOSHIFUJI Hideaki | 8e1ef0a | 2006-08-29 17:15:09 -0700 | [diff] [blame] | 127 | struct in6_addr *daddr, struct in6_addr *saddr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | { |
| 129 | struct ipv6_pinfo *np = inet6_sk(sk); |
| 130 | struct rt6_info *rt = (struct rt6_info *) dst; |
| 131 | |
Herbert Xu | f83ef8c | 2006-06-30 13:37:03 -0700 | [diff] [blame] | 132 | sk_setup_caps(sk, dst); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | np->daddr_cache = daddr; |
YOSHIFUJI Hideaki | 8e1ef0a | 2006-08-29 17:15:09 -0700 | [diff] [blame] | 134 | #ifdef CONFIG_IPV6_SUBTREES |
| 135 | np->saddr_cache = saddr; |
| 136 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | np->dst_cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0; |
Herbert Xu | 497c615 | 2006-07-30 20:19:33 -0700 | [diff] [blame] | 138 | } |
| 139 | |
| 140 | static inline void ip6_dst_store(struct sock *sk, struct dst_entry *dst, |
YOSHIFUJI Hideaki | 8e1ef0a | 2006-08-29 17:15:09 -0700 | [diff] [blame] | 141 | struct in6_addr *daddr, struct in6_addr *saddr) |
Herbert Xu | 497c615 | 2006-07-30 20:19:33 -0700 | [diff] [blame] | 142 | { |
| 143 | write_lock(&sk->sk_dst_lock); |
YOSHIFUJI Hideaki | 8e1ef0a | 2006-08-29 17:15:09 -0700 | [diff] [blame] | 144 | __ip6_dst_store(sk, dst, daddr, saddr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | write_unlock(&sk->sk_dst_lock); |
| 146 | } |
| 147 | |
| 148 | static 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 |