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 #ifdef __KERNEL__
  11
  12 #include <net/flow.h>
  13 #include <net/ip6_fib.h>
  14 #include <linux/tcp.h>
  15 #include <linux/ip.h>
  16
  17 struct pol_chain {
  18         int                     type;
  19         int                     priority;
  20         struct fib6_node        *rules;
  21         struct pol_chain        *next;
  22 };
  23
  24 extern struct rt6_info  ip6_null_entry;
  25
  26 extern int ip6_rt_gc_interval;
  27
  28 extern void                     ip6_route_input(struct sk_buff *skb);
  29
  30 extern struct dst_entry *       ip6_route_output(struct sock *sk,
  31                                                  struct flowi *fl);
  32
  33 extern int                      ip6_route_me_harder(struct sk_buff *skb);
  34
  35 extern void                     ip6_route_init(void);
  36 extern void                     ip6_route_cleanup(void);
  37
  38 extern int                      ipv6_route_ioctl(unsigned int cmd, void __user *arg);
  39
  40 extern int                      ip6_route_add(struct in6_rtmsg *rtmsg,
  41                                               struct nlmsghdr *,
  42                                               void *rtattr);
  43 extern int                      ip6_del_rt(struct rt6_info *,
  44                                            struct nlmsghdr *,
  45                                            void *rtattr);
  46
  47 extern int                      ip6_rt_addr_add(struct in6_addr *addr,
  48                                                 struct net_device *dev,
  49                                                 int anycast);
  50
  51 extern int                      ip6_rt_addr_del(struct in6_addr *addr,
  52                                                 struct net_device *dev);
  53
  54 extern void                     rt6_sndmsg(int type, struct in6_addr *dst,
  55                                            struct in6_addr *src,
  56                                            struct in6_addr *gw,
  57                                            struct net_device *dev,
  58                                            int dstlen, int srclen,
  59                                            int metric, __u32 flags);
  60
  61 extern struct rt6_info          *rt6_lookup(struct in6_addr *daddr,
  62                                             struct in6_addr *saddr,
  63                                             int oif, int flags);
  64
  65 extern struct dst_entry *ndisc_dst_alloc(struct net_device *dev,
  66                                          struct neighbour *neigh,
  67                                          struct in6_addr *addr,
  68                                          int (*output)(struct sk_buff **));
  69 extern int ndisc_dst_gc(int *more);
  70 extern void fib6_force_start_gc(void);
  71
  72 /*
  73  *      support functions for ND
  74  *
  75  */
  76 extern struct rt6_info *        rt6_get_dflt_router(struct in6_addr *addr,
  77                                                     struct net_device *dev);
  78 extern struct rt6_info *        rt6_add_dflt_router(struct in6_addr *gwaddr,
  79                                                     struct net_device *dev);
  80
  81 extern void                     rt6_purge_dflt_routers(int lst_resort);
  82
  83 extern void                     rt6_redirect(struct in6_addr *dest,
  84                                              struct in6_addr *saddr,
  85                                              struct neighbour *neigh,
  86                                              int on_link);
  87
  88 extern void                     rt6_pmtu_discovery(struct in6_addr *daddr,
  89                                                    struct in6_addr *saddr,
  90                                                    struct net_device *dev,
  91                                                    u32 pmtu);
  92
  93 struct nlmsghdr;
  94 struct netlink_callback;
  95 extern int inet6_dump_fib(struct sk_buff *skb, struct netlink_callback *cb);
  96 extern int inet6_rtm_newroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg);
  97 extern int inet6_rtm_delroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg);
  98 extern int inet6_rtm_getroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg);
  99
 100 extern void rt6_ifdown(struct net_device *dev);
 101 extern void rt6_mtu_change(struct net_device *dev, unsigned mtu);
 102
 103 extern rwlock_t rt6_lock;
 104
 105 /*
 106  *      Store a destination cache entry in a socket
 107  *      For UDP/RAW sockets this is done on udp_connect.
 108  */
 109
 110 static inline void ip6_dst_store(struct sock *sk, struct dst_entry *dst,
 111                                      struct in6_addr *daddr)
 112 {
 113         struct ipv6_pinfo *np = inet6_sk(sk);
 114         struct rt6_info *rt = (struct rt6_info *) dst;
 115
 116         write_lock(&sk->sk_dst_lock);
 117         __sk_dst_set(sk, dst);
 118         np->daddr_cache = daddr;
 119         np->dst_cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0;
 120         write_unlock(&sk->sk_dst_lock);
 121 }
 122
 123 static inline int ipv6_unicast_destination(struct sk_buff *skb)
 124 {
 125         struct rt6_info *rt = (struct rt6_info *) skb->dst;
 126
 127         return rt->rt6i_flags & RTF_LOCAL;
 128 }
 129
 130 #endif
 131 #endif