1 #ifndef _NET_IP6_ROUTE_H
2 #define _NET_IP6_ROUTE_H
4 #define IP6_RT_PRIO_FW 16
5 #define IP6_RT_PRIO_USER 1024
6 #define IP6_RT_PRIO_ADDRCONF 256
7 #define IP6_RT_PRIO_KERN 512
8 #define IP6_RT_FLOW_MASK 0x00ff
14 #if defined(__BIG_ENDIAN_BITFIELD)
18 #elif defined(__LITTLE_ENDIAN_BITFIELD)
24 __u8 prefix[0]; /* 0,8 or 16 */
30 #include <net/ip6_fib.h>
33 #include <linux/ipv6.h>
38 struct fib6_node *rules;
39 struct pol_chain *next;
42 extern struct rt6_info ip6_null_entry;
44 #ifdef CONFIG_IPV6_MULTIPLE_TABLES
45 extern struct rt6_info ip6_prohibit_entry;
46 extern struct rt6_info ip6_blk_hole_entry;
49 extern int ip6_rt_gc_interval;
51 extern void ip6_route_input(struct sk_buff *skb);
53 extern struct dst_entry * ip6_route_output(struct sock *sk,
56 extern int ip6_route_me_harder(struct sk_buff *skb);
58 extern void ip6_route_init(void);
59 extern void ip6_route_cleanup(void);
61 extern int ipv6_route_ioctl(unsigned int cmd, void __user *arg);
63 extern int ip6_route_add(struct in6_rtmsg *rtmsg,
66 struct netlink_skb_parms *req,
68 extern int ip6_ins_rt(struct rt6_info *,
71 struct netlink_skb_parms *req);
72 extern int ip6_del_rt(struct rt6_info *,
75 struct netlink_skb_parms *req);
77 extern int ip6_rt_addr_add(struct in6_addr *addr,
78 struct net_device *dev,
81 extern int ip6_rt_addr_del(struct in6_addr *addr,
82 struct net_device *dev);
84 extern void rt6_sndmsg(int type, struct in6_addr *dst,
87 struct net_device *dev,
88 int dstlen, int srclen,
89 int metric, __u32 flags);
91 extern struct rt6_info *rt6_lookup(struct in6_addr *daddr,
92 struct in6_addr *saddr,
95 extern struct dst_entry *ndisc_dst_alloc(struct net_device *dev,
96 struct neighbour *neigh,
97 struct in6_addr *addr,
98 int (*output)(struct sk_buff *));
99 extern int ndisc_dst_gc(int *more);
100 extern void fib6_force_start_gc(void);
102 extern struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
103 const struct in6_addr *addr,
107 * support functions for ND
110 extern struct rt6_info * rt6_get_dflt_router(struct in6_addr *addr,
111 struct net_device *dev);
112 extern struct rt6_info * rt6_add_dflt_router(struct in6_addr *gwaddr,
113 struct net_device *dev,
116 extern void rt6_purge_dflt_routers(void);
118 extern int rt6_route_rcv(struct net_device *dev,
120 struct in6_addr *gwaddr);
122 extern void rt6_redirect(struct in6_addr *dest,
123 struct in6_addr *saddr,
124 struct neighbour *neigh,
128 extern void rt6_pmtu_discovery(struct in6_addr *daddr,
129 struct in6_addr *saddr,
130 struct net_device *dev,
134 struct netlink_callback;
135 extern int inet6_dump_fib(struct sk_buff *skb, struct netlink_callback *cb);
136 extern int inet6_rtm_newroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg);
137 extern int inet6_rtm_delroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg);
138 extern int inet6_rtm_getroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg);
140 struct rt6_rtnl_dump_arg
143 struct netlink_callback *cb;
146 extern int rt6_dump_route(struct rt6_info *rt, void *p_arg);
147 extern void rt6_ifdown(struct net_device *dev);
148 extern void rt6_mtu_change(struct net_device *dev, unsigned mtu);
150 extern rwlock_t rt6_lock;
153 * Store a destination cache entry in a socket
155 static inline void __ip6_dst_store(struct sock *sk, struct dst_entry *dst,
156 struct in6_addr *daddr)
158 struct ipv6_pinfo *np = inet6_sk(sk);
159 struct rt6_info *rt = (struct rt6_info *) dst;
161 sk_setup_caps(sk, dst);
162 np->daddr_cache = daddr;
163 np->dst_cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0;
166 static inline void ip6_dst_store(struct sock *sk, struct dst_entry *dst,
167 struct in6_addr *daddr)
169 write_lock(&sk->sk_dst_lock);
170 __ip6_dst_store(sk, dst, daddr);
171 write_unlock(&sk->sk_dst_lock);
174 static inline int ipv6_unicast_destination(struct sk_buff *skb)
176 struct rt6_info *rt = (struct rt6_info *) skb->dst;
178 return rt->rt6i_flags & RTF_LOCAL;