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 0x1
34 #define RT6_LOOKUP_F_REACHABLE 0x2
35 #define RT6_LOOKUP_F_HAS_SADDR 0x4
37 extern struct rt6_info *ip6_null_entry;
39 #ifdef CONFIG_IPV6_MULTIPLE_TABLES
40 extern struct rt6_info *ip6_prohibit_entry;
41 extern struct rt6_info *ip6_blk_hole_entry;
44 extern void ip6_route_input(struct sk_buff *skb);
46 extern struct dst_entry * ip6_route_output(struct net *net,
50 extern int ip6_route_init(void);
51 extern void ip6_route_cleanup(void);
53 extern int ipv6_route_ioctl(struct net *net,
57 extern int ip6_route_add(struct fib6_config *cfg);
58 extern int ip6_ins_rt(struct rt6_info *);
59 extern int ip6_del_rt(struct rt6_info *);
61 extern int ip6_rt_addr_add(struct in6_addr *addr,
62 struct net_device *dev,
65 extern int ip6_rt_addr_del(struct in6_addr *addr,
66 struct net_device *dev);
68 extern void rt6_sndmsg(int type, struct in6_addr *dst,
71 struct net_device *dev,
72 int dstlen, int srclen,
73 int metric, __u32 flags);
75 extern struct rt6_info *rt6_lookup(struct net *net,
76 struct in6_addr *daddr,
77 struct in6_addr *saddr,
80 extern struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
81 struct neighbour *neigh,
82 struct in6_addr *addr);
83 extern int icmp6_dst_gc(int *more);
85 extern void fib6_force_start_gc(struct net *net);
87 extern struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
88 const struct in6_addr *addr,
91 extern int ip6_dst_hoplimit(struct dst_entry *dst);
94 * support functions for ND
97 extern struct rt6_info * rt6_get_dflt_router(struct in6_addr *addr,
98 struct net_device *dev);
99 extern struct rt6_info * rt6_add_dflt_router(struct in6_addr *gwaddr,
100 struct net_device *dev,
103 extern void rt6_purge_dflt_routers(struct net *net);
105 extern int rt6_route_rcv(struct net_device *dev,
107 struct in6_addr *gwaddr);
109 extern void rt6_redirect(struct in6_addr *dest,
110 struct in6_addr *src,
111 struct in6_addr *saddr,
112 struct neighbour *neigh,
116 extern void rt6_pmtu_discovery(struct in6_addr *daddr,
117 struct in6_addr *saddr,
118 struct net_device *dev,
121 struct netlink_callback;
123 struct rt6_rtnl_dump_arg
126 struct netlink_callback *cb;
129 extern int rt6_dump_route(struct rt6_info *rt, void *p_arg);
130 extern void rt6_ifdown(struct net *net, struct net_device *dev);
131 extern void rt6_mtu_change(struct net_device *dev, unsigned mtu);
133 extern rwlock_t rt6_lock;
136 * Store a destination cache entry in a socket
138 static inline void __ip6_dst_store(struct sock *sk, struct dst_entry *dst,
139 struct in6_addr *daddr, struct in6_addr *saddr)
141 struct ipv6_pinfo *np = inet6_sk(sk);
142 struct rt6_info *rt = (struct rt6_info *) dst;
144 sk_setup_caps(sk, dst);
145 np->daddr_cache = daddr;
146 #ifdef CONFIG_IPV6_SUBTREES
147 np->saddr_cache = saddr;
149 np->dst_cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0;
152 static inline void ip6_dst_store(struct sock *sk, struct dst_entry *dst,
153 struct in6_addr *daddr, struct in6_addr *saddr)
155 write_lock(&sk->sk_dst_lock);
156 __ip6_dst_store(sk, dst, daddr, saddr);
157 write_unlock(&sk->sk_dst_lock);
160 static inline int ipv6_unicast_destination(struct sk_buff *skb)
162 struct rt6_info *rt = (struct rt6_info *) skb->dst;
164 return rt->rt6i_flags & RTF_LOCAL;