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 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | |
YOSHIFUJI Hideaki | 70ceb4f | 2006-03-20 17:06:24 -0800 | [diff] [blame] | 7 | struct route_info { |
| 8 | __u8 type; |
| 9 | __u8 length; |
| 10 | __u8 prefix_len; |
| 11 | #if defined(__BIG_ENDIAN_BITFIELD) |
| 12 | __u8 reserved_h:3, |
| 13 | route_pref:2, |
| 14 | reserved_l:3; |
| 15 | #elif defined(__LITTLE_ENDIAN_BITFIELD) |
| 16 | __u8 reserved_l:3, |
| 17 | route_pref:2, |
| 18 | reserved_h:3; |
| 19 | #endif |
Al Viro | e69a4adc | 2006-11-14 20:56:00 -0800 | [diff] [blame] | 20 | __be32 lifetime; |
YOSHIFUJI Hideaki | 70ceb4f | 2006-03-20 17:06:24 -0800 | [diff] [blame] | 21 | __u8 prefix[0]; /* 0,8 or 16 */ |
| 22 | }; |
| 23 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | #include <net/flow.h> |
| 25 | #include <net/ip6_fib.h> |
| 26 | #include <net/sock.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | #include <linux/ip.h> |
| 28 | #include <linux/ipv6.h> |
| 29 | |
YOSHIFUJI Hideaki | 7cbca67 | 2008-03-25 09:37:42 +0900 | [diff] [blame] | 30 | #define RT6_LOOKUP_F_IFACE 0x00000001 |
| 31 | #define RT6_LOOKUP_F_REACHABLE 0x00000002 |
| 32 | #define RT6_LOOKUP_F_HAS_SADDR 0x00000004 |
| 33 | #define RT6_LOOKUP_F_SRCPREF_TMP 0x00000008 |
| 34 | #define RT6_LOOKUP_F_SRCPREF_PUBLIC 0x00000010 |
| 35 | #define RT6_LOOKUP_F_SRCPREF_COA 0x00000020 |
YOSHIFUJI Hideaki | 77d16f4 | 2006-08-23 17:25:05 -0700 | [diff] [blame] | 36 | |
YOSHIFUJI Hideaki / 吉藤英明 | 0c9a2ac | 2010-03-07 00:14:44 +0000 | [diff] [blame] | 37 | /* |
| 38 | * rt6_srcprefs2flags() and rt6_flags2srcprefs() translate |
| 39 | * between IPV6_ADDR_PREFERENCES socket option values |
| 40 | * IPV6_PREFER_SRC_TMP = 0x1 |
| 41 | * IPV6_PREFER_SRC_PUBLIC = 0x2 |
| 42 | * IPV6_PREFER_SRC_COA = 0x4 |
| 43 | * and above RT6_LOOKUP_F_SRCPREF_xxx flags. |
| 44 | */ |
| 45 | static inline int rt6_srcprefs2flags(unsigned int srcprefs) |
| 46 | { |
| 47 | /* No need to bitmask because srcprefs have only 3 bits. */ |
| 48 | return srcprefs << 3; |
| 49 | } |
| 50 | |
| 51 | static inline unsigned int rt6_flags2srcprefs(int flags) |
| 52 | { |
| 53 | return (flags >> 3) & 7; |
| 54 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | |
David S. Miller | b341936 | 2010-11-30 12:27:11 -0800 | [diff] [blame] | 56 | extern void rt6_bind_peer(struct rt6_info *rt, |
| 57 | int create); |
| 58 | |
David S. Miller | 15c0542 | 2010-12-02 10:16:06 -0800 | [diff] [blame] | 59 | static inline struct inet_peer *rt6_get_peer(struct rt6_info *rt) |
| 60 | { |
| 61 | if (rt->rt6i_peer) |
| 62 | return rt->rt6i_peer; |
| 63 | |
| 64 | rt6_bind_peer(rt, 0); |
| 65 | return rt->rt6i_peer; |
| 66 | } |
| 67 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | extern void ip6_route_input(struct sk_buff *skb); |
| 69 | |
Daniel Lezcano | 4591db4 | 2008-03-05 10:48:10 -0800 | [diff] [blame] | 70 | extern struct dst_entry * ip6_route_output(struct net *net, |
Florian Westphal | 9c7a4f9 | 2011-03-22 19:17:36 -0700 | [diff] [blame] | 71 | const struct sock *sk, |
David S. Miller | 4c9483b | 2011-03-12 16:22:43 -0500 | [diff] [blame] | 72 | struct flowi6 *fl6); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | |
Daniel Lezcano | 433d49c | 2007-12-07 00:43:48 -0800 | [diff] [blame] | 74 | extern int ip6_route_init(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | extern void ip6_route_cleanup(void); |
| 76 | |
Daniel Lezcano | 5578689 | 2008-03-04 13:47:47 -0800 | [diff] [blame] | 77 | extern int ipv6_route_ioctl(struct net *net, |
| 78 | unsigned int cmd, |
| 79 | void __user *arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | |
Thomas Graf | 86872cb | 2006-08-22 00:01:08 -0700 | [diff] [blame] | 81 | extern int ip6_route_add(struct fib6_config *cfg); |
Thomas Graf | 40e22e8 | 2006-08-22 00:00:45 -0700 | [diff] [blame] | 82 | extern int ip6_ins_rt(struct rt6_info *); |
Thomas Graf | e0a1ad73 | 2006-08-22 00:00:21 -0700 | [diff] [blame] | 83 | extern int ip6_del_rt(struct rt6_info *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | |
Daniel Walter | c3968a8 | 2011-04-13 21:10:57 +0000 | [diff] [blame] | 85 | extern int ip6_route_get_saddr(struct net *net, |
| 86 | struct rt6_info *rt, |
Eric Dumazet | b71d1d4 | 2011-04-22 04:53:02 +0000 | [diff] [blame] | 87 | const struct in6_addr *daddr, |
Daniel Walter | c3968a8 | 2011-04-13 21:10:57 +0000 | [diff] [blame] | 88 | unsigned int prefs, |
| 89 | struct in6_addr *saddr); |
| 90 | |
Daniel Lezcano | 606a2b4 | 2008-03-04 13:45:59 -0800 | [diff] [blame] | 91 | extern struct rt6_info *rt6_lookup(struct net *net, |
YOSHIFUJI Hideaki | 9acd9f3 | 2008-04-10 15:42:10 +0900 | [diff] [blame] | 92 | const struct in6_addr *daddr, |
| 93 | const struct in6_addr *saddr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | int oif, int flags); |
| 95 | |
YOSHIFUJI Hideaki | 3b00944 | 2007-12-06 16:11:48 -0800 | [diff] [blame] | 96 | extern struct dst_entry *icmp6_dst_alloc(struct net_device *dev, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | struct neighbour *neigh, |
YOSHIFUJI Hideaki | 9acd9f3 | 2008-04-10 15:42:10 +0900 | [diff] [blame] | 98 | const struct in6_addr *addr); |
Stephen Hemminger | 3d0f24a | 2008-07-22 14:35:50 -0700 | [diff] [blame] | 99 | extern int icmp6_dst_gc(void); |
YOSHIFUJI Hideaki | 3b00944 | 2007-12-06 16:11:48 -0800 | [diff] [blame] | 100 | |
Daniel Lezcano | 63152fc | 2008-03-03 23:31:11 -0800 | [diff] [blame] | 101 | extern void fib6_force_start_gc(struct net *net); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | |
| 103 | extern struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev, |
| 104 | const struct in6_addr *addr, |
| 105 | int anycast); |
| 106 | |
YOSHIFUJI Hideaki | 6b75d09 | 2008-03-10 06:00:30 -0400 | [diff] [blame] | 107 | extern int ip6_dst_hoplimit(struct dst_entry *dst); |
| 108 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | /* |
| 110 | * support functions for ND |
| 111 | * |
| 112 | */ |
Eric Dumazet | b71d1d4 | 2011-04-22 04:53:02 +0000 | [diff] [blame] | 113 | extern struct rt6_info * rt6_get_dflt_router(const struct in6_addr *addr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | struct net_device *dev); |
Eric Dumazet | b71d1d4 | 2011-04-22 04:53:02 +0000 | [diff] [blame] | 115 | extern struct rt6_info * rt6_add_dflt_router(const struct in6_addr *gwaddr, |
YOSHIFUJI Hideaki | ebacaaa | 2006-03-20 17:04:53 -0800 | [diff] [blame] | 116 | struct net_device *dev, |
| 117 | unsigned int pref); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | |
Daniel Lezcano | 7b4da53 | 2008-03-04 13:47:14 -0800 | [diff] [blame] | 119 | extern void rt6_purge_dflt_routers(struct net *net); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | |
YOSHIFUJI Hideaki | 70ceb4f | 2006-03-20 17:06:24 -0800 | [diff] [blame] | 121 | extern int rt6_route_rcv(struct net_device *dev, |
| 122 | u8 *opt, int len, |
Eric Dumazet | b71d1d4 | 2011-04-22 04:53:02 +0000 | [diff] [blame] | 123 | const struct in6_addr *gwaddr); |
YOSHIFUJI Hideaki | 70ceb4f | 2006-03-20 17:06:24 -0800 | [diff] [blame] | 124 | |
Eric Dumazet | b71d1d4 | 2011-04-22 04:53:02 +0000 | [diff] [blame] | 125 | extern void rt6_redirect(const struct in6_addr *dest, |
| 126 | const struct in6_addr *src, |
| 127 | const struct in6_addr *saddr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | struct neighbour *neigh, |
| 129 | u8 *lladdr, |
| 130 | int on_link); |
| 131 | |
Eric Dumazet | b71d1d4 | 2011-04-22 04:53:02 +0000 | [diff] [blame] | 132 | extern void rt6_pmtu_discovery(const struct in6_addr *daddr, |
| 133 | const struct in6_addr *saddr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | struct net_device *dev, |
| 135 | u32 pmtu); |
| 136 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | struct netlink_callback; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | |
Eric Dumazet | fd2c3ef | 2009-11-03 03:26:03 +0000 | [diff] [blame] | 139 | struct rt6_rtnl_dump_arg { |
Patrick McHardy | 1b43af5 | 2006-08-10 23:11:17 -0700 | [diff] [blame] | 140 | struct sk_buff *skb; |
| 141 | struct netlink_callback *cb; |
Brian Haley | 191cd58 | 2008-08-14 15:33:21 -0700 | [diff] [blame] | 142 | struct net *net; |
Patrick McHardy | 1b43af5 | 2006-08-10 23:11:17 -0700 | [diff] [blame] | 143 | }; |
| 144 | |
| 145 | extern int rt6_dump_route(struct rt6_info *rt, void *p_arg); |
Daniel Lezcano | f3db485 | 2008-03-03 23:27:06 -0800 | [diff] [blame] | 146 | extern void rt6_ifdown(struct net *net, struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | extern void rt6_mtu_change(struct net_device *dev, unsigned mtu); |
Daniel Walter | c3968a8 | 2011-04-13 21:10:57 +0000 | [diff] [blame] | 148 | extern void rt6_remove_prefsrc(struct inet6_ifaddr *ifp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | |
| 151 | /* |
| 152 | * Store a destination cache entry in a socket |
| 153 | */ |
Herbert Xu | 497c615 | 2006-07-30 20:19:33 -0700 | [diff] [blame] | 154 | 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] | 155 | struct in6_addr *daddr, struct in6_addr *saddr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | { |
| 157 | struct ipv6_pinfo *np = inet6_sk(sk); |
| 158 | struct rt6_info *rt = (struct rt6_info *) dst; |
| 159 | |
Herbert Xu | f83ef8c | 2006-06-30 13:37:03 -0700 | [diff] [blame] | 160 | sk_setup_caps(sk, dst); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | np->daddr_cache = daddr; |
YOSHIFUJI Hideaki | 8e1ef0a | 2006-08-29 17:15:09 -0700 | [diff] [blame] | 162 | #ifdef CONFIG_IPV6_SUBTREES |
| 163 | np->saddr_cache = saddr; |
| 164 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | np->dst_cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0; |
Herbert Xu | 497c615 | 2006-07-30 20:19:33 -0700 | [diff] [blame] | 166 | } |
| 167 | |
| 168 | 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] | 169 | struct in6_addr *daddr, struct in6_addr *saddr) |
Herbert Xu | 497c615 | 2006-07-30 20:19:33 -0700 | [diff] [blame] | 170 | { |
Eric Dumazet | b6c6712 | 2010-04-08 23:03:29 +0000 | [diff] [blame] | 171 | spin_lock(&sk->sk_dst_lock); |
YOSHIFUJI Hideaki | 8e1ef0a | 2006-08-29 17:15:09 -0700 | [diff] [blame] | 172 | __ip6_dst_store(sk, dst, daddr, saddr); |
Eric Dumazet | b6c6712 | 2010-04-08 23:03:29 +0000 | [diff] [blame] | 173 | spin_unlock(&sk->sk_dst_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | } |
| 175 | |
| 176 | static inline int ipv6_unicast_destination(struct sk_buff *skb) |
| 177 | { |
Eric Dumazet | adf3090 | 2009-06-02 05:19:30 +0000 | [diff] [blame] | 178 | struct rt6_info *rt = (struct rt6_info *) skb_dst(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | |
| 180 | return rt->rt6i_flags & RTF_LOCAL; |
| 181 | } |
| 182 | |
David Stevens | ad0081e | 2010-12-17 11:42:42 +0000 | [diff] [blame] | 183 | int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *)); |
| 184 | |
| 185 | static inline int ip6_skb_dst_mtu(struct sk_buff *skb) |
| 186 | { |
| 187 | struct ipv6_pinfo *np = skb->sk ? inet6_sk(skb->sk) : NULL; |
| 188 | |
| 189 | return (np && np->pmtudisc == IPV6_PMTUDISC_PROBE) ? |
| 190 | skb_dst(skb)->dev->mtu : dst_mtu(skb_dst(skb)); |
| 191 | } |
| 192 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | #endif |