[IPv6] route: FIB6 configuration using struct fib6_config
[linux-2.6.git] / include / net / ip6_route.h
1 #ifndef _NET_IP6_ROUTE_H
2 #define _NET_IP6_ROUTE_H
3
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
9
10 struct route_info {
11         __u8                    type;
12         __u8                    length;
13         __u8                    prefix_len;
14 #if defined(__BIG_ENDIAN_BITFIELD)
15         __u8                    reserved_h:3,
16                                 route_pref:2,
17                                 reserved_l:3;
18 #elif defined(__LITTLE_ENDIAN_BITFIELD)
19         __u8                    reserved_l:3,
20                                 route_pref:2,
21                                 reserved_h:3;
22 #endif
23         __u32                   lifetime;
24         __u8                    prefix[0];      /* 0,8 or 16 */
25 };
26
27 #ifdef __KERNEL__
28
29 #include <net/flow.h>
30 #include <net/ip6_fib.h>
31 #include <net/sock.h>
32 #include <linux/ip.h>
33 #include <linux/ipv6.h>
34
35 struct pol_chain {
36         int                     type;
37         int                     priority;
38         struct fib6_node        *rules;
39         struct pol_chain        *next;
40 };
41
42 extern struct rt6_info  ip6_null_entry;
43
44 #ifdef CONFIG_IPV6_MULTIPLE_TABLES
45 extern struct rt6_info  ip6_prohibit_entry;
46 extern struct rt6_info  ip6_blk_hole_entry;
47 #endif
48
49 extern int ip6_rt_gc_interval;
50
51 extern void                     ip6_route_input(struct sk_buff *skb);
52
53 extern struct dst_entry *       ip6_route_output(struct sock *sk,
54                                                  struct flowi *fl);
55
56 extern int                      ip6_route_me_harder(struct sk_buff *skb);
57
58 extern void                     ip6_route_init(void);
59 extern void                     ip6_route_cleanup(void);
60
61 extern int                      ipv6_route_ioctl(unsigned int cmd, void __user *arg);
62
63 extern int                      ip6_route_add(struct fib6_config *cfg);
64 extern int                      ip6_ins_rt(struct rt6_info *);
65 extern int                      ip6_del_rt(struct rt6_info *);
66
67 extern int                      ip6_rt_addr_add(struct in6_addr *addr,
68                                                 struct net_device *dev,
69                                                 int anycast);
70
71 extern int                      ip6_rt_addr_del(struct in6_addr *addr,
72                                                 struct net_device *dev);
73
74 extern void                     rt6_sndmsg(int type, struct in6_addr *dst,
75                                            struct in6_addr *src,
76                                            struct in6_addr *gw,
77                                            struct net_device *dev, 
78                                            int dstlen, int srclen,
79                                            int metric, __u32 flags);
80
81 extern struct rt6_info          *rt6_lookup(struct in6_addr *daddr,
82                                             struct in6_addr *saddr,
83                                             int oif, int flags);
84
85 extern struct dst_entry *ndisc_dst_alloc(struct net_device *dev,
86                                          struct neighbour *neigh,
87                                          struct in6_addr *addr,
88                                          int (*output)(struct sk_buff *));
89 extern int ndisc_dst_gc(int *more);
90 extern void fib6_force_start_gc(void);
91
92 extern struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
93                                            const struct in6_addr *addr,
94                                            int anycast);
95
96 /*
97  *      support functions for ND
98  *
99  */
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,
104                                                     unsigned int pref);
105
106 extern void                     rt6_purge_dflt_routers(void);
107
108 extern int                      rt6_route_rcv(struct net_device *dev,
109                                               u8 *opt, int len,
110                                               struct in6_addr *gwaddr);
111
112 extern void                     rt6_redirect(struct in6_addr *dest,
113                                              struct in6_addr *saddr,
114                                              struct neighbour *neigh,
115                                              u8 *lladdr,
116                                              int on_link);
117
118 extern void                     rt6_pmtu_discovery(struct in6_addr *daddr,
119                                                    struct in6_addr *saddr,
120                                                    struct net_device *dev,
121                                                    u32 pmtu);
122
123 struct nlmsghdr;
124 struct netlink_callback;
125 extern int inet6_dump_fib(struct sk_buff *skb, struct netlink_callback *cb);
126 extern int inet6_rtm_newroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg);
127 extern int inet6_rtm_delroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg);
128 extern int inet6_rtm_getroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg);
129
130 struct rt6_rtnl_dump_arg
131 {
132         struct sk_buff *skb;
133         struct netlink_callback *cb;
134 };
135
136 extern int rt6_dump_route(struct rt6_info *rt, void *p_arg);
137 extern void rt6_ifdown(struct net_device *dev);
138 extern void rt6_mtu_change(struct net_device *dev, unsigned mtu);
139
140 extern rwlock_t rt6_lock;
141
142 /*
143  *      Store a destination cache entry in a socket
144  */
145 static inline void __ip6_dst_store(struct sock *sk, struct dst_entry *dst,
146                                    struct in6_addr *daddr)
147 {
148         struct ipv6_pinfo *np = inet6_sk(sk);
149         struct rt6_info *rt = (struct rt6_info *) dst;
150
151         sk_setup_caps(sk, dst);
152         np->daddr_cache = daddr;
153         np->dst_cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0;
154 }
155
156 static inline void ip6_dst_store(struct sock *sk, struct dst_entry *dst,
157                                  struct in6_addr *daddr)
158 {
159         write_lock(&sk->sk_dst_lock);
160         __ip6_dst_store(sk, dst, daddr);
161         write_unlock(&sk->sk_dst_lock);
162 }
163
164 static inline int ipv6_unicast_destination(struct sk_buff *skb)
165 {
166         struct rt6_info *rt = (struct rt6_info *) skb->dst;
167
168         return rt->rt6i_flags & RTF_LOCAL;
169 }
170
171 #endif
172 #endif