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
40 extern struct rt6_info *ip6_null_entry;
42 #ifdef CONFIG_IPV6_MULTIPLE_TABLES
43 extern struct rt6_info *ip6_prohibit_entry;
44 extern struct rt6_info *ip6_blk_hole_entry;
47 extern void ip6_route_input(struct sk_buff *skb);
49 extern struct dst_entry * ip6_route_output(struct net *net,
53 extern int ip6_route_init(void);
54 extern void ip6_route_cleanup(void);
56 extern int ipv6_route_ioctl(struct net *net,
60 extern int ip6_route_add(struct fib6_config *cfg);
61 extern int ip6_ins_rt(struct rt6_info *);
62 extern int ip6_del_rt(struct rt6_info *);
64 extern int ip6_rt_addr_add(struct in6_addr *addr,
65 struct net_device *dev,
68 extern int ip6_rt_addr_del(struct in6_addr *addr,
69 struct net_device *dev);
71 extern void rt6_sndmsg(int type, struct in6_addr *dst,
74 struct net_device *dev,
75 int dstlen, int srclen,
76 int metric, __u32 flags);
78 extern struct rt6_info *rt6_lookup(struct net *net,
79 struct in6_addr *daddr,
80 struct in6_addr *saddr,
83 extern struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
84 struct neighbour *neigh,
85 struct in6_addr *addr);
86 extern int icmp6_dst_gc(int *more);
88 extern void fib6_force_start_gc(struct net *net);
90 extern struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
91 const struct in6_addr *addr,
94 extern int ip6_dst_hoplimit(struct dst_entry *dst);
97 * support functions for ND
100 extern struct rt6_info * rt6_get_dflt_router(struct in6_addr *addr,
101 struct net_device *dev);
102 extern struct rt6_info * rt6_add_dflt_router(struct in6_addr *gwaddr,
103 struct net_device *dev,
106 extern void rt6_purge_dflt_routers(struct net *net);
108 extern int rt6_route_rcv(struct net_device *dev,
110 struct in6_addr *gwaddr);
112 extern void rt6_redirect(struct in6_addr *dest,
113 struct in6_addr *src,
114 struct in6_addr *saddr,
115 struct neighbour *neigh,
119 extern void rt6_pmtu_discovery(struct in6_addr *daddr,
120 struct in6_addr *saddr,
121 struct net_device *dev,
124 struct netlink_callback;
126 struct rt6_rtnl_dump_arg
129 struct netlink_callback *cb;
132 extern int rt6_dump_route(struct rt6_info *rt, void *p_arg);
133 extern void rt6_ifdown(struct net *net, struct net_device *dev);
134 extern void rt6_mtu_change(struct net_device *dev, unsigned mtu);
136 extern rwlock_t rt6_lock;
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 write_lock(&sk->sk_dst_lock);
159 __ip6_dst_store(sk, dst, daddr, saddr);
160 write_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;
167 return rt->rt6i_flags & RTF_LOCAL;