net: cleanup include/net
[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_USER        1024
5 #define IP6_RT_PRIO_ADDRCONF    256
6 #define IP6_RT_PRIO_KERN        512
7
8 struct route_info {
9         __u8                    type;
10         __u8                    length;
11         __u8                    prefix_len;
12 #if defined(__BIG_ENDIAN_BITFIELD)
13         __u8                    reserved_h:3,
14                                 route_pref:2,
15                                 reserved_l:3;
16 #elif defined(__LITTLE_ENDIAN_BITFIELD)
17         __u8                    reserved_l:3,
18                                 route_pref:2,
19                                 reserved_h:3;
20 #endif
21         __be32                  lifetime;
22         __u8                    prefix[0];      /* 0,8 or 16 */
23 };
24
25 #ifdef __KERNEL__
26
27 #include <net/flow.h>
28 #include <net/ip6_fib.h>
29 #include <net/sock.h>
30 #include <linux/ip.h>
31 #include <linux/ipv6.h>
32
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
39
40
41 extern void                     ip6_route_input(struct sk_buff *skb);
42
43 extern struct dst_entry *       ip6_route_output(struct net *net,
44                                                  struct sock *sk,
45                                                  struct flowi *fl);
46
47 extern int                      ip6_route_init(void);
48 extern void                     ip6_route_cleanup(void);
49
50 extern int                      ipv6_route_ioctl(struct net *net,
51                                                  unsigned int cmd,
52                                                  void __user *arg);
53
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 *);
57
58 extern struct rt6_info          *rt6_lookup(struct net *net,
59                                             const struct in6_addr *daddr,
60                                             const struct in6_addr *saddr,
61                                             int oif, int flags);
62
63 extern struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
64                                          struct neighbour *neigh,
65                                          const struct in6_addr *addr);
66 extern int icmp6_dst_gc(void);
67
68 extern void fib6_force_start_gc(struct net *net);
69
70 extern struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
71                                            const struct in6_addr *addr,
72                                            int anycast);
73
74 extern int                      ip6_dst_hoplimit(struct dst_entry *dst);
75
76 /*
77  *      support functions for ND
78  *
79  */
80 extern struct rt6_info *        rt6_get_dflt_router(struct in6_addr *addr,
81                                                     struct net_device *dev);
82 extern struct rt6_info *        rt6_add_dflt_router(struct in6_addr *gwaddr,
83                                                     struct net_device *dev,
84                                                     unsigned int pref);
85
86 extern void                     rt6_purge_dflt_routers(struct net *net);
87
88 extern int                      rt6_route_rcv(struct net_device *dev,
89                                               u8 *opt, int len,
90                                               struct in6_addr *gwaddr);
91
92 extern void                     rt6_redirect(struct in6_addr *dest,
93                                              struct in6_addr *src,
94                                              struct in6_addr *saddr,
95                                              struct neighbour *neigh,
96                                              u8 *lladdr,
97                                              int on_link);
98
99 extern void                     rt6_pmtu_discovery(struct in6_addr *daddr,
100                                                    struct in6_addr *saddr,
101                                                    struct net_device *dev,
102                                                    u32 pmtu);
103
104 struct netlink_callback;
105
106 struct rt6_rtnl_dump_arg {
107         struct sk_buff *skb;
108         struct netlink_callback *cb;
109         struct net *net;
110 };
111
112 extern int rt6_dump_route(struct rt6_info *rt, void *p_arg);
113 extern void rt6_ifdown(struct net *net, struct net_device *dev);
114 extern void rt6_mtu_change(struct net_device *dev, unsigned mtu);
115
116
117 /*
118  *      Store a destination cache entry in a socket
119  */
120 static inline void __ip6_dst_store(struct sock *sk, struct dst_entry *dst,
121                                    struct in6_addr *daddr, struct in6_addr *saddr)
122 {
123         struct ipv6_pinfo *np = inet6_sk(sk);
124         struct rt6_info *rt = (struct rt6_info *) dst;
125
126         sk_setup_caps(sk, dst);
127         np->daddr_cache = daddr;
128 #ifdef CONFIG_IPV6_SUBTREES
129         np->saddr_cache = saddr;
130 #endif
131         np->dst_cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0;
132 }
133
134 static inline void ip6_dst_store(struct sock *sk, struct dst_entry *dst,
135                                  struct in6_addr *daddr, struct in6_addr *saddr)
136 {
137         write_lock(&sk->sk_dst_lock);
138         __ip6_dst_store(sk, dst, daddr, saddr);
139         write_unlock(&sk->sk_dst_lock);
140 }
141
142 static inline int ipv6_unicast_destination(struct sk_buff *skb)
143 {
144         struct rt6_info *rt = (struct rt6_info *) skb_dst(skb);
145
146         return rt->rt6i_flags & RTF_LOCAL;
147 }
148
149 #endif
150 #endif