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_MIPV6       64
   6 #define IP6_RT_PRIO_USER        1024
   7 #define IP6_RT_PRIO_ADDRCONF    256
   8 #define IP6_RT_PRIO_KERN        512
   9 #define IP6_RT_FLOW_MASK        0x00ff
  10
  11 #ifdef __KERNEL__
  12
  13 #include <net/flow.h>
  14 #include <net/ip6_fib.h>
  15 #include <linux/tcp.h>
  16 #include <linux/ip.h>
  17
  18 struct pol_chain {
  19         int                     type;
  20         int                     priority;
  21         struct fib6_node        *rules;
  22         struct pol_chain        *next;
  23 };
  24
  25 extern struct rt6_info  ip6_null_entry;
  26
  27 extern int ip6_rt_gc_interval;
  28
  29 extern void                     ip6_route_input(struct sk_buff *skb);
  30
  31 extern struct dst_entry *       ip6_route_output(struct sock *sk,
  32                                                  struct flowi *fl);
  33
  34 extern int                      ip6_route_me_harder(struct sk_buff *skb);
  35
  36 extern void                     ip6_route_init(void);
  37 extern void                     ip6_route_cleanup(void);
  38
  39 extern int                      ipv6_route_ioctl(unsigned int cmd, void __user *arg);
  40
  41 extern int                      ip6_route_add(struct in6_rtmsg *rtmsg,
  42                                               struct nlmsghdr *,
  43                                               void *rtattr);
  44 extern int                      ip6_route_del(struct in6_rtmsg *rtmsg,
  45                                               struct nlmsghdr *, void *_rtattr);
  46 extern int                      ip6_del_rt(struct rt6_info *,
  47                                            struct nlmsghdr *,
  48                                            void *rtattr);
  49
  50 extern int                      ip6_rt_addr_add(struct in6_addr *addr,
  51                                                 struct net_device *dev,
  52                                                 int anycast);
  53
  54 extern int                      ip6_rt_addr_del(struct in6_addr *addr,
  55                                                 struct net_device *dev);
  56
  57 extern void                     rt6_sndmsg(int type, struct in6_addr *dst,
  58                                            struct in6_addr *src,
  59                                            struct in6_addr *gw,
  60                                            struct net_device *dev,
  61                                            int dstlen, int srclen,
  62                                            int metric, __u32 flags);
  63
  64 extern struct rt6_info          *rt6_lookup(struct in6_addr *daddr,
  65                                             struct in6_addr *saddr,
  66                                             int oif, int flags);
  67
  68 extern struct dst_entry *ndisc_dst_alloc(struct net_device *dev,
  69                                          struct neighbour *neigh,
  70                                          struct in6_addr *addr,
  71                                          int (*output)(struct sk_buff **));
  72 extern int ndisc_dst_gc(int *more);
  73 extern void fib6_force_start_gc(void);
  74
  75 /*
  76  *      support functions for ND
  77  *
  78  */
  79 extern struct rt6_info *        rt6_get_dflt_router(struct in6_addr *addr,
  80                                                     struct net_device *dev);
  81 extern struct rt6_info *        rt6_add_dflt_router(struct in6_addr *gwaddr,
  82                                                     struct net_device *dev);
  83
  84 extern void                     rt6_purge_dflt_routers(int lst_resort);
  85
  86 extern int                      rt6_redirect(struct in6_addr *dest,
  87                                              struct in6_addr *saddr,
  88                                              struct neighbour *neigh,
  89                                              u8 *lladdr,
  90                                              int on_link);
  91
  92 extern void                     rt6_pmtu_discovery(struct in6_addr *daddr,
  93                                                    struct in6_addr *saddr,
  94                                                    struct net_device *dev,
  95                                                    u32 pmtu);
  96
  97 struct nlmsghdr;
  98 struct netlink_callback;
  99 extern int inet6_dump_fib(struct sk_buff *skb, struct netlink_callback *cb);
 100 extern int inet6_rtm_newroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg);
 101 extern int inet6_rtm_delroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg);
 102 extern int inet6_rtm_getroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg);
 103
 104 extern void rt6_ifdown(struct net_device *dev);
 105 extern void rt6_mtu_change(struct net_device *dev, unsigned mtu);
 106
 107 extern rwlock_t rt6_lock;
 108
 109 /*
 110  *      Store a destination cache entry in a socket
 111  */
 112 static inline void ip6_dst_store(struct sock *sk, struct dst_entry *dst,
 113                                  struct in6_addr *daddr,
 114                                  struct in6_addr *saddr)
 115 {
 116         struct ipv6_pinfo *np = inet6_sk(sk);
 117         struct rt6_info *rt = (struct rt6_info *) dst;
 118
 119         write_lock(&sk->sk_dst_lock);
 120         __sk_dst_set(sk, dst);
 121         np->daddr_cache = daddr;
 122 #ifdef CONFIG_IPV6_SUBTREES
 123         np->saddr_cache = saddr;
 124 #endif
 125         np->dst_cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0;
 126         write_unlock(&sk->sk_dst_lock);
 127 }
 128
 129 static inline int ipv6_unicast_destination(struct sk_buff *skb)
 130 {
 131         struct rt6_info *rt = (struct rt6_info *) skb->dst;
 132
 133         return rt->rt6i_flags & RTF_LOCAL;
 134 }
 135
 136 #endif
 137 #endif