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 | e69a4ad | 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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | extern void ip6_route_input(struct sk_buff *skb); |
| 42 | |
Daniel Lezcano | 4591db4 | 2008-03-05 10:48:10 -0800 | [diff] [blame] | 43 | extern struct dst_entry * ip6_route_output(struct net *net, |
| 44 | struct sock *sk, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | struct flowi *fl); |
| 46 | |
Daniel Lezcano | 433d49c | 2007-12-07 00:43:48 -0800 | [diff] [blame] | 47 | extern int ip6_route_init(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | extern void ip6_route_cleanup(void); |
| 49 | |
Daniel Lezcano | 5578689 | 2008-03-04 13:47:47 -0800 | [diff] [blame] | 50 | extern int ipv6_route_ioctl(struct net *net, |
| 51 | unsigned int cmd, |
| 52 | void __user *arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | |
Thomas Graf | 86872cb | 2006-08-22 00:01:08 -0700 | [diff] [blame] | 54 | extern int ip6_route_add(struct fib6_config *cfg); |
Thomas Graf | 40e22e8 | 2006-08-22 00:00:45 -0700 | [diff] [blame] | 55 | extern int ip6_ins_rt(struct rt6_info *); |
Thomas Graf | e0a1ad73 | 2006-08-22 00:00:21 -0700 | [diff] [blame] | 56 | extern int ip6_del_rt(struct rt6_info *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | |
Daniel Lezcano | 606a2b4 | 2008-03-04 13:45:59 -0800 | [diff] [blame] | 58 | extern struct rt6_info *rt6_lookup(struct net *net, |
YOSHIFUJI Hideaki | 9acd9f3 | 2008-04-10 15:42:10 +0900 | [diff] [blame] | 59 | const struct in6_addr *daddr, |
| 60 | const struct in6_addr *saddr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | int oif, int flags); |
| 62 | |
YOSHIFUJI Hideaki | 3b00944 | 2007-12-06 16:11:48 -0800 | [diff] [blame] | 63 | extern struct dst_entry *icmp6_dst_alloc(struct net_device *dev, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | struct neighbour *neigh, |
YOSHIFUJI Hideaki | 9acd9f3 | 2008-04-10 15:42:10 +0900 | [diff] [blame] | 65 | const struct in6_addr *addr); |
Stephen Hemminger | 3d0f24a | 2008-07-22 14:35:50 -0700 | [diff] [blame] | 66 | extern int icmp6_dst_gc(void); |
YOSHIFUJI Hideaki | 3b00944 | 2007-12-06 16:11:48 -0800 | [diff] [blame] | 67 | |
Daniel Lezcano | 63152fc | 2008-03-03 23:31:11 -0800 | [diff] [blame] | 68 | extern void fib6_force_start_gc(struct net *net); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | |
| 70 | extern struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev, |
| 71 | const struct in6_addr *addr, |
| 72 | int anycast); |
| 73 | |
YOSHIFUJI Hideaki | 6b75d09 | 2008-03-10 06:00:30 -0400 | [diff] [blame] | 74 | extern int ip6_dst_hoplimit(struct dst_entry *dst); |
| 75 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | /* |
| 77 | * support functions for ND |
| 78 | * |
| 79 | */ |
| 80 | extern struct rt6_info * rt6_get_dflt_router(struct in6_addr *addr, |
| 81 | struct net_device *dev); |
| 82 | extern struct rt6_info * rt6_add_dflt_router(struct in6_addr *gwaddr, |
YOSHIFUJI Hideaki | ebacaaa | 2006-03-20 17:04:53 -0800 | [diff] [blame] | 83 | struct net_device *dev, |
| 84 | unsigned int pref); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | |
Daniel Lezcano | 7b4da53 | 2008-03-04 13:47:14 -0800 | [diff] [blame] | 86 | extern void rt6_purge_dflt_routers(struct net *net); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | |
YOSHIFUJI Hideaki | 70ceb4f | 2006-03-20 17:06:24 -0800 | [diff] [blame] | 88 | extern int rt6_route_rcv(struct net_device *dev, |
| 89 | u8 *opt, int len, |
| 90 | struct in6_addr *gwaddr); |
| 91 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | extern void rt6_redirect(struct in6_addr *dest, |
YOSHIFUJI Hideaki | 5e032e3 | 2006-08-23 17:12:24 -0700 | [diff] [blame] | 93 | struct in6_addr *src, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | struct in6_addr *saddr, |
| 95 | struct neighbour *neigh, |
| 96 | u8 *lladdr, |
| 97 | int on_link); |
| 98 | |
| 99 | extern void rt6_pmtu_discovery(struct in6_addr *daddr, |
| 100 | struct in6_addr *saddr, |
| 101 | struct net_device *dev, |
| 102 | u32 pmtu); |
| 103 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | struct netlink_callback; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | |
Eric Dumazet | fd2c3ef | 2009-11-03 03:26:03 +0000 | [diff] [blame] | 106 | struct rt6_rtnl_dump_arg { |
Patrick McHardy | 1b43af5 | 2006-08-10 23:11:17 -0700 | [diff] [blame] | 107 | struct sk_buff *skb; |
| 108 | struct netlink_callback *cb; |
Brian Haley | 191cd58 | 2008-08-14 15:33:21 -0700 | [diff] [blame] | 109 | struct net *net; |
Patrick McHardy | 1b43af5 | 2006-08-10 23:11:17 -0700 | [diff] [blame] | 110 | }; |
| 111 | |
| 112 | extern int rt6_dump_route(struct rt6_info *rt, void *p_arg); |
Daniel Lezcano | f3db485 | 2008-03-03 23:27:06 -0800 | [diff] [blame] | 113 | extern void rt6_ifdown(struct net *net, struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | extern void rt6_mtu_change(struct net_device *dev, unsigned mtu); |
| 115 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | |
| 117 | /* |
| 118 | * Store a destination cache entry in a socket |
| 119 | */ |
Herbert Xu | 497c615 | 2006-07-30 20:19:33 -0700 | [diff] [blame] | 120 | 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] | 121 | struct in6_addr *daddr, struct in6_addr *saddr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | { |
| 123 | struct ipv6_pinfo *np = inet6_sk(sk); |
| 124 | struct rt6_info *rt = (struct rt6_info *) dst; |
| 125 | |
Herbert Xu | f83ef8c | 2006-06-30 13:37:03 -0700 | [diff] [blame] | 126 | sk_setup_caps(sk, dst); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | np->daddr_cache = daddr; |
YOSHIFUJI Hideaki | 8e1ef0a | 2006-08-29 17:15:09 -0700 | [diff] [blame] | 128 | #ifdef CONFIG_IPV6_SUBTREES |
| 129 | np->saddr_cache = saddr; |
| 130 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | np->dst_cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0; |
Herbert Xu | 497c615 | 2006-07-30 20:19:33 -0700 | [diff] [blame] | 132 | } |
| 133 | |
| 134 | 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] | 135 | struct in6_addr *daddr, struct in6_addr *saddr) |
Herbert Xu | 497c615 | 2006-07-30 20:19:33 -0700 | [diff] [blame] | 136 | { |
| 137 | write_lock(&sk->sk_dst_lock); |
YOSHIFUJI Hideaki | 8e1ef0a | 2006-08-29 17:15:09 -0700 | [diff] [blame] | 138 | __ip6_dst_store(sk, dst, daddr, saddr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 139 | write_unlock(&sk->sk_dst_lock); |
| 140 | } |
| 141 | |
| 142 | static inline int ipv6_unicast_destination(struct sk_buff *skb) |
| 143 | { |
Eric Dumazet | adf3090 | 2009-06-02 05:19:30 +0000 | [diff] [blame] | 144 | struct rt6_info *rt = (struct rt6_info *) skb_dst(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | |
| 146 | return rt->rt6i_flags & RTF_LOCAL; |
| 147 | } |
| 148 | |
| 149 | #endif |
| 150 | #endif |