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 <net/sock.h>
  15 #include <linux/tcp.h>
  16 #include <linux/ip.h>
  17 #include <linux/ipv6.h>
  18
  19 struct pol_chain {
  20         int                     type;
  21         int                     priority;
  22         struct fib6_node        *rules;
  23         struct pol_chain        *next;
  24 };
  25
  26 extern struct rt6_info  ip6_null_entry;
  27
  28 extern int ip6_rt_gc_interval;
  29
  30 extern void                     ip6_route_input(struct sk_buff *skb);
  31
  32 extern struct dst_entry *       ip6_route_output(struct sock *sk,
  33                                                  struct flowi *fl);
  34
  35 extern int                      ip6_route_me_harder(struct sk_buff *skb);
  36
  37 extern void                     ip6_route_init(void);
  38 extern void                     ip6_route_cleanup(void);
  39
  40 extern int                      ipv6_route_ioctl(unsigned int cmd, void __user *arg);
  41
  42 extern int                      ip6_route_add(struct in6_rtmsg *rtmsg,
  43                                               struct nlmsghdr *,
  44                                               void *rtattr,
  45                                               struct netlink_skb_parms *req);
  46 extern int                      ip6_ins_rt(struct rt6_info *,
  47                                            struct nlmsghdr *,
  48                                            void *rtattr,
  49                                            struct netlink_skb_parms *req);
  50 extern int                      ip6_del_rt(struct rt6_info *,
  51                                            struct nlmsghdr *,
  52                                            void *rtattr,
  53                                            struct netlink_skb_parms *req);
  54
  55 extern int                      ip6_rt_addr_add(struct in6_addr *addr,
  56                                                 struct net_device *dev,
  57                                                 int anycast);
  58
  59 extern int                      ip6_rt_addr_del(struct in6_addr *addr,
  60                                                 struct net_device *dev);
  61
  62 extern void                     rt6_sndmsg(int type, struct in6_addr *dst,
  63                                            struct in6_addr *src,
  64                                            struct in6_addr *gw,
  65                                            struct net_device *dev,
  66                                            int dstlen, int srclen,
  67                                            int metric, __u32 flags);
  68
  69 extern struct rt6_info          *rt6_lookup(struct in6_addr *daddr,
  70                                             struct in6_addr *saddr,
  71                                             int oif, int flags);
  72
  73 extern struct dst_entry *ndisc_dst_alloc(struct net_device *dev,
  74                                          struct neighbour *neigh,
  75                                          struct in6_addr *addr,
  76                                          int (*output)(struct sk_buff *));
  77 extern int ndisc_dst_gc(int *more);
  78 extern void fib6_force_start_gc(void);
  79
  80 extern struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
  81                                            const struct in6_addr *addr,
  82                                            int anycast);
  83
  84 /*
  85  *      support functions for ND
  86  *
  87  */
  88 extern struct rt6_info *        rt6_get_dflt_router(struct in6_addr *addr,
  89                                                     struct net_device *dev);
  90 extern struct rt6_info *        rt6_add_dflt_router(struct in6_addr *gwaddr,
  91                                                     struct net_device *dev);
  92
  93 extern void                     rt6_purge_dflt_routers(void);
  94
  95 extern void                     rt6_reset_dflt_pointer(struct rt6_info *rt);
  96
  97 extern void                     rt6_redirect(struct in6_addr *dest,
  98                                              struct in6_addr *saddr,
  99                                              struct neighbour *neigh,
 100                                              u8 *lladdr,
 101                                              int on_link);
 102
 103 extern void                     rt6_pmtu_discovery(struct in6_addr *daddr,
 104                                                    struct in6_addr *saddr,
 105                                                    struct net_device *dev,
 106                                                    u32 pmtu);
 107
 108 struct nlmsghdr;
 109 struct netlink_callback;
 110 extern int inet6_dump_fib(struct sk_buff *skb, struct netlink_callback *cb);
 111 extern int inet6_rtm_newroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg);
 112 extern int inet6_rtm_delroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg);
 113 extern int inet6_rtm_getroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg);
 114
 115 extern void rt6_ifdown(struct net_device *dev);
 116 extern void rt6_mtu_change(struct net_device *dev, unsigned mtu);
 117
 118 extern rwlock_t rt6_lock;
 119
 120 /*
 121  *      Store a destination cache entry in a socket
 122  */
 123 static inline void ip6_dst_store(struct sock *sk, struct dst_entry *dst,
 124                                      struct in6_addr *daddr)
 125 {
 126         struct ipv6_pinfo *np = inet6_sk(sk);
 127         struct rt6_info *rt = (struct rt6_info *) dst;
 128
 129         write_lock(&sk->sk_dst_lock);
 130         __sk_dst_set(sk, dst);
 131         np->daddr_cache = daddr;
 132         np->dst_cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0;
 133         write_unlock(&sk->sk_dst_lock);
 134 }
 135
 136 static inline int ipv6_unicast_destination(struct sk_buff *skb)
 137 {
 138         struct rt6_info *rt = (struct rt6_info *) skb->dst;
 139
 140         return rt->rt6i_flags & RTF_LOCAL;
 141 }
 142
 143 #endif
 144 #endif