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 sock *sk,
49 extern int ip6_route_init(void);
50 extern void ip6_route_cleanup(void);
52 extern int ipv6_route_ioctl(unsigned int cmd, void __user *arg);
54 extern int ip6_route_add(struct fib6_config *cfg);
55 extern int ip6_ins_rt(struct rt6_info *);
56 extern int ip6_del_rt(struct rt6_info *);
58 extern int ip6_rt_addr_add(struct in6_addr *addr,
59 struct net_device *dev,
62 extern int ip6_rt_addr_del(struct in6_addr *addr,
63 struct net_device *dev);
65 extern void rt6_sndmsg(int type, struct in6_addr *dst,
68 struct net_device *dev,
69 int dstlen, int srclen,
70 int metric, __u32 flags);
72 extern struct rt6_info *rt6_lookup(struct net *net,
73 struct in6_addr *daddr,
74 struct in6_addr *saddr,
77 extern struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
78 struct neighbour *neigh,
79 struct in6_addr *addr);
80 extern int icmp6_dst_gc(int *more);
82 extern void fib6_force_start_gc(struct net *net);
84 extern struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
85 const struct in6_addr *addr,
89 * support functions for ND
92 extern struct rt6_info * rt6_get_dflt_router(struct in6_addr *addr,
93 struct net_device *dev);
94 extern struct rt6_info * rt6_add_dflt_router(struct in6_addr *gwaddr,
95 struct net_device *dev,
98 extern void rt6_purge_dflt_routers(struct net *net);
100 extern int rt6_route_rcv(struct net_device *dev,
102 struct in6_addr *gwaddr);
104 extern void rt6_redirect(struct in6_addr *dest,
105 struct in6_addr *src,
106 struct in6_addr *saddr,
107 struct neighbour *neigh,
111 extern void rt6_pmtu_discovery(struct in6_addr *daddr,
112 struct in6_addr *saddr,
113 struct net_device *dev,
116 struct netlink_callback;
118 struct rt6_rtnl_dump_arg
121 struct netlink_callback *cb;
124 extern int rt6_dump_route(struct rt6_info *rt, void *p_arg);
125 extern void rt6_ifdown(struct net *net, struct net_device *dev);
126 extern void rt6_mtu_change(struct net_device *dev, unsigned mtu);
128 extern rwlock_t rt6_lock;
131 * Store a destination cache entry in a socket
133 static inline void __ip6_dst_store(struct sock *sk, struct dst_entry *dst,
134 struct in6_addr *daddr, struct in6_addr *saddr)
136 struct ipv6_pinfo *np = inet6_sk(sk);
137 struct rt6_info *rt = (struct rt6_info *) dst;
139 sk_setup_caps(sk, dst);
140 np->daddr_cache = daddr;
141 #ifdef CONFIG_IPV6_SUBTREES
142 np->saddr_cache = saddr;
144 np->dst_cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0;
147 static inline void ip6_dst_store(struct sock *sk, struct dst_entry *dst,
148 struct in6_addr *daddr, struct in6_addr *saddr)
150 write_lock(&sk->sk_dst_lock);
151 __ip6_dst_store(sk, dst, daddr, saddr);
152 write_unlock(&sk->sk_dst_lock);
155 static inline int ipv6_unicast_destination(struct sk_buff *skb)
157 struct rt6_info *rt = (struct rt6_info *) skb->dst;
159 return rt->rt6i_flags & RTF_LOCAL;