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 #ifdef CONFIG_IPV6_MULTIPLE_TABLES 45 extern struct rt6_info ip6_prohibit_entry; 46 extern struct rt6_info ip6_blk_hole_entry; 47 #endif 48 49 extern int ip6_rt_gc_interval; 50 51 extern void ip6_route_input(struct sk_buff *skb); 52 53 extern struct dst_entry * ip6_route_output(struct sock *sk, 54 struct flowi *fl); 55 56 extern int ip6_route_me_harder(struct sk_buff *skb); 57 58 extern void ip6_route_init(void); 59 extern void ip6_route_cleanup(void); 60 61 extern int ipv6_route_ioctl(unsigned int cmd, void __user *arg); 62 63 extern int ip6_route_add(struct fib6_config *cfg); 64 extern int ip6_ins_rt(struct rt6_info *); 65 extern int ip6_del_rt(struct rt6_info *); 66 67 extern int ip6_rt_addr_add(struct in6_addr *addr, 68 struct net_device *dev, 69 int anycast); 70 71 extern int ip6_rt_addr_del(struct in6_addr *addr, 72 struct net_device *dev); 73 74 extern void rt6_sndmsg(int type, struct in6_addr *dst, 75 struct in6_addr *src, 76 struct in6_addr *gw, 77 struct net_device *dev, 78 int dstlen, int srclen, 79 int metric, __u32 flags); 80 81 extern struct rt6_info *rt6_lookup(struct in6_addr *daddr, 82 struct in6_addr *saddr, 83 int oif, int flags); 84 85 extern struct dst_entry *ndisc_dst_alloc(struct net_device *dev, 86 struct neighbour *neigh, 87 struct in6_addr *addr, 88 int (*output)(struct sk_buff *)); 89 extern int ndisc_dst_gc(int *more); 90 extern void fib6_force_start_gc(void); 91 92 extern struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev, 93 const struct in6_addr *addr, 94 int anycast); 95 96 /* 97 * support functions for ND 98 * 99 */ 100 extern struct rt6_info * rt6_get_dflt_router(struct in6_addr *addr, 101 struct net_device *dev); 102 extern struct rt6_info * rt6_add_dflt_router(struct in6_addr *gwaddr, 103 struct net_device *dev, 104 unsigned int pref); 105 106 extern void rt6_purge_dflt_routers(void); 107 108 extern int rt6_route_rcv(struct net_device *dev, 109 u8 *opt, int len, 110 struct in6_addr *gwaddr); 111 112 extern void rt6_redirect(struct in6_addr *dest, 113 struct in6_addr *src, 114 struct in6_addr *saddr, 115 struct neighbour *neigh, 116 u8 *lladdr, 117 int on_link); 118 119 extern void rt6_pmtu_discovery(struct in6_addr *daddr, 120 struct in6_addr *saddr, 121 struct net_device *dev, 122 u32 pmtu); 123 124 struct nlmsghdr; 125 struct netlink_callback; 126 extern int inet6_dump_fib(struct sk_buff *skb, struct netlink_callback *cb); 127 extern int inet6_rtm_newroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg); 128 extern int inet6_rtm_delroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg); 129 extern int inet6_rtm_getroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg); 130 131 struct rt6_rtnl_dump_arg 132 { 133 struct sk_buff *skb; 134 struct netlink_callback *cb; 135 }; 136 137 extern int rt6_dump_route(struct rt6_info *rt, void *p_arg); 138 extern void rt6_ifdown(struct net_device *dev); 139 extern void rt6_mtu_change(struct net_device *dev, unsigned mtu); 140 141 extern rwlock_t rt6_lock; 142 143 /* 144 * Store a destination cache entry in a socket 145 */ 146 static inline void __ip6_dst_store(struct sock *sk, struct dst_entry *dst, 147 struct in6_addr *daddr) 148 { 149 struct ipv6_pinfo *np = inet6_sk(sk); 150 struct rt6_info *rt = (struct rt6_info *) dst; 151 152 sk_setup_caps(sk, dst); 153 np->daddr_cache = daddr; 154 np->dst_cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0; 155 } 156 157 static inline void ip6_dst_store(struct sock *sk, struct dst_entry *dst, 158 struct in6_addr *daddr) 159 { 160 write_lock(&sk->sk_dst_lock); 161 __ip6_dst_store(sk, dst, daddr); 162 write_unlock(&sk->sk_dst_lock); 163 } 164 165 static inline int ipv6_unicast_destination(struct sk_buff *skb) 166 { 167 struct rt6_info *rt = (struct rt6_info *) skb->dst; 168 169 return rt->rt6i_flags & RTF_LOCAL; 170 } 171 172 #endif 173 #endif 174