1 #ifndef _NET_IP6_ROUTE_H
2 #define _NET_IP6_ROUTE_H
4 #define IP6_RT_PRIO_USER 1024
5 #define IP6_RT_PRIO_ADDRCONF 256
6 #define IP6_RT_PRIO_KERN 512
12 #if defined(__BIG_ENDIAN_BITFIELD)
16 #elif defined(__LITTLE_ENDIAN_BITFIELD)
22 __u8 prefix[0]; /* 0,8 or 16 */
28 #include <net/ip6_fib.h>
31 #include <linux/ipv6.h>
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
41 * rt6_srcprefs2flags() and rt6_flags2srcprefs() translate
42 * between IPV6_ADDR_PREFERENCES socket option values
43 * IPV6_PREFER_SRC_TMP = 0x1
44 * IPV6_PREFER_SRC_PUBLIC = 0x2
45 * IPV6_PREFER_SRC_COA = 0x4
46 * and above RT6_LOOKUP_F_SRCPREF_xxx flags.
48 static inline int rt6_srcprefs2flags(unsigned int srcprefs)
50 /* No need to bitmask because srcprefs have only 3 bits. */
54 static inline unsigned int rt6_flags2srcprefs(int flags)
56 return (flags >> 3) & 7;
59 extern void rt6_bind_peer(struct rt6_info *rt,
62 extern void ip6_route_input(struct sk_buff *skb);
64 extern struct dst_entry * ip6_route_output(struct net *net,
68 extern int ip6_route_init(void);
69 extern void ip6_route_cleanup(void);
71 extern int ipv6_route_ioctl(struct net *net,
75 extern int ip6_route_add(struct fib6_config *cfg);
76 extern int ip6_ins_rt(struct rt6_info *);
77 extern int ip6_del_rt(struct rt6_info *);
79 extern struct rt6_info *rt6_lookup(struct net *net,
80 const struct in6_addr *daddr,
81 const struct in6_addr *saddr,
84 extern struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
85 struct neighbour *neigh,
86 const struct in6_addr *addr);
87 extern int icmp6_dst_gc(void);
89 extern void fib6_force_start_gc(struct net *net);
91 extern struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
92 const struct in6_addr *addr,
95 extern int ip6_dst_hoplimit(struct dst_entry *dst);
98 * support functions for ND
101 extern struct rt6_info * rt6_get_dflt_router(struct in6_addr *addr,
102 struct net_device *dev);
103 extern struct rt6_info * rt6_add_dflt_router(struct in6_addr *gwaddr,
104 struct net_device *dev,
107 extern void rt6_purge_dflt_routers(struct net *net);
109 extern int rt6_route_rcv(struct net_device *dev,
111 struct in6_addr *gwaddr);
113 extern void rt6_redirect(struct in6_addr *dest,
114 struct in6_addr *src,
115 struct in6_addr *saddr,
116 struct neighbour *neigh,
120 extern void rt6_pmtu_discovery(struct in6_addr *daddr,
121 struct in6_addr *saddr,
122 struct net_device *dev,
125 struct netlink_callback;
127 struct rt6_rtnl_dump_arg {
129 struct netlink_callback *cb;
133 extern int rt6_dump_route(struct rt6_info *rt, void *p_arg);
134 extern void rt6_ifdown(struct net *net, struct net_device *dev);
135 extern void rt6_mtu_change(struct net_device *dev, unsigned mtu);
139 * Store a destination cache entry in a socket
141 static inline void __ip6_dst_store(struct sock *sk, struct dst_entry *dst,
142 struct in6_addr *daddr, struct in6_addr *saddr)
144 struct ipv6_pinfo *np = inet6_sk(sk);
145 struct rt6_info *rt = (struct rt6_info *) dst;
147 sk_setup_caps(sk, dst);
148 np->daddr_cache = daddr;
149 #ifdef CONFIG_IPV6_SUBTREES
150 np->saddr_cache = saddr;
152 np->dst_cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0;
155 static inline void ip6_dst_store(struct sock *sk, struct dst_entry *dst,
156 struct in6_addr *daddr, struct in6_addr *saddr)
158 spin_lock(&sk->sk_dst_lock);
159 __ip6_dst_store(sk, dst, daddr, saddr);
160 spin_unlock(&sk->sk_dst_lock);
163 static inline int ipv6_unicast_destination(struct sk_buff *skb)
165 struct rt6_info *rt = (struct rt6_info *) skb_dst(skb);
167 return rt->rt6i_flags & RTF_LOCAL;