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 extern int ip6_rt_gc_interval; 45 46 extern void ip6_route_input(struct sk_buff *skb); 47 48 extern struct dst_entry * ip6_route_output(struct sock *sk, 49 struct flowi *fl); 50 51 extern int ip6_route_me_harder(struct sk_buff *skb); 52 53 extern void ip6_route_init(void); 54 extern void ip6_route_cleanup(void); 55 56 extern int ipv6_route_ioctl(unsigned int cmd, void __user *arg); 57 58 extern int ip6_route_add(struct in6_rtmsg *rtmsg, 59 struct nlmsghdr *, 60 void *rtattr, 61 struct netlink_skb_parms *req); 62 extern int ip6_ins_rt(struct rt6_info *, 63 struct nlmsghdr *, 64 void *rtattr, 65 struct netlink_skb_parms *req); 66 extern int ip6_del_rt(struct rt6_info *, 67 struct nlmsghdr *, 68 void *rtattr, 69 struct netlink_skb_parms *req); 70 71 extern int ip6_rt_addr_add(struct in6_addr *addr, 72 struct net_device *dev, 73 int anycast); 74 75 extern int ip6_rt_addr_del(struct in6_addr *addr, 76 struct net_device *dev); 77 78 extern void rt6_sndmsg(int type, struct in6_addr *dst, 79 struct in6_addr *src, 80 struct in6_addr *gw, 81 struct net_device *dev, 82 int dstlen, int srclen, 83 int metric, __u32 flags); 84 85 extern struct rt6_info *rt6_lookup(struct in6_addr *daddr, 86 struct in6_addr *saddr, 87 int oif, int flags); 88 89 extern struct dst_entry *ndisc_dst_alloc(struct net_device *dev, 90 struct neighbour *neigh, 91 struct in6_addr *addr, 92 int (*output)(struct sk_buff *)); 93 extern int ndisc_dst_gc(int *more); 94 extern void fib6_force_start_gc(void); 95 96 extern struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev, 97 const struct in6_addr *addr, 98 int anycast); 99 100 /* 101 * support functions for ND 102 * 103 */ 104 extern struct rt6_info * rt6_get_dflt_router(struct in6_addr *addr, 105 struct net_device *dev); 106 extern struct rt6_info * rt6_add_dflt_router(struct in6_addr *gwaddr, 107 struct net_device *dev, 108 unsigned int pref); 109 110 extern void rt6_purge_dflt_routers(void); 111 112 extern int rt6_route_rcv(struct net_device *dev, 113 u8 *opt, int len, 114 struct in6_addr *gwaddr); 115 116 extern void rt6_redirect(struct in6_addr *dest, 117 struct in6_addr *saddr, 118 struct neighbour *neigh, 119 u8 *lladdr, 120 int on_link); 121 122 extern void rt6_pmtu_discovery(struct in6_addr *daddr, 123 struct in6_addr *saddr, 124 struct net_device *dev, 125 u32 pmtu); 126 127 struct nlmsghdr; 128 struct netlink_callback; 129 extern int inet6_dump_fib(struct sk_buff *skb, struct netlink_callback *cb); 130 extern int inet6_rtm_newroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg); 131 extern int inet6_rtm_delroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg); 132 extern int inet6_rtm_getroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg); 133 134 extern void rt6_ifdown(struct net_device *dev); 135 extern void rt6_mtu_change(struct net_device *dev, unsigned mtu); 136 137 extern rwlock_t rt6_lock; 138 139 /* 140 * Store a destination cache entry in a socket 141 */ 142 static inline void ip6_dst_store(struct sock *sk, struct dst_entry *dst, 143 struct in6_addr *daddr) 144 { 145 struct ipv6_pinfo *np = inet6_sk(sk); 146 struct rt6_info *rt = (struct rt6_info *) dst; 147 148 write_lock(&sk->sk_dst_lock); 149 __sk_dst_set(sk, dst); 150 np->daddr_cache = daddr; 151 np->dst_cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0; 152 write_unlock(&sk->sk_dst_lock); 153 } 154 155 static inline int ipv6_unicast_destination(struct sk_buff *skb) 156 { 157 struct rt6_info *rt = (struct rt6_info *) skb->dst; 158 159 return rt->rt6i_flags & RTF_LOCAL; 160 } 161 162 #endif 163 #endif 164