1 #ifndef _NET_IP6_ROUTE_H 2 #define _NET_IP6_ROUTE_H 3 4 #define IP6_RT_PRIO_USER 1024 5 #define IP6_RT_PRIO_ADDRCONF 256 6 #define IP6_RT_PRIO_KERN 512 7 8 struct route_info { 9 __u8 type; 10 __u8 length; 11 __u8 prefix_len; 12 #if defined(__BIG_ENDIAN_BITFIELD) 13 __u8 reserved_h:3, 14 route_pref:2, 15 reserved_l:3; 16 #elif defined(__LITTLE_ENDIAN_BITFIELD) 17 __u8 reserved_l:3, 18 route_pref:2, 19 reserved_h:3; 20 #endif 21 __be32 lifetime; 22 __u8 prefix[0]; /* 0,8 or 16 */ 23 }; 24 25 #ifdef __KERNEL__ 26 27 #include <net/flow.h> 28 #include <net/ip6_fib.h> 29 #include <net/sock.h> 30 #include <linux/ip.h> 31 #include <linux/ipv6.h> 32 33 #define RT6_LOOKUP_F_IFACE 0x1 34 #define RT6_LOOKUP_F_REACHABLE 0x2 35 #define RT6_LOOKUP_F_HAS_SADDR 0x4 36 37 extern struct rt6_info ip6_null_entry; 38 39 #ifdef CONFIG_IPV6_MULTIPLE_TABLES 40 extern struct rt6_info ip6_prohibit_entry; 41 extern struct rt6_info ip6_blk_hole_entry; 42 #endif 43 44 extern void ip6_route_input(struct sk_buff *skb); 45 46 extern struct dst_entry * ip6_route_output(struct sock *sk, 47 struct flowi *fl); 48 49 extern int ip6_route_init(void); 50 extern void ip6_route_cleanup(void); 51 52 extern int ipv6_route_ioctl(unsigned int cmd, void __user *arg); 53 54 extern int ip6_route_add(struct fib6_config *cfg); 55 extern int ip6_ins_rt(struct rt6_info *); 56 extern int ip6_del_rt(struct rt6_info *); 57 58 extern int ip6_rt_addr_add(struct in6_addr *addr, 59 struct net_device *dev, 60 int anycast); 61 62 extern int ip6_rt_addr_del(struct in6_addr *addr, 63 struct net_device *dev); 64 65 extern void rt6_sndmsg(int type, struct in6_addr *dst, 66 struct in6_addr *src, 67 struct in6_addr *gw, 68 struct net_device *dev, 69 int dstlen, int srclen, 70 int metric, __u32 flags); 71 72 extern struct rt6_info *rt6_lookup(struct in6_addr *daddr, 73 struct in6_addr *saddr, 74 int oif, int flags); 75 76 extern struct dst_entry *ndisc_dst_alloc(struct net_device *dev, 77 struct neighbour *neigh, 78 struct in6_addr *addr, 79 int (*output)(struct sk_buff *)); 80 extern int ndisc_dst_gc(int *more); 81 extern void fib6_force_start_gc(void); 82 83 extern struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev, 84 const struct in6_addr *addr, 85 int anycast); 86 87 /* 88 * support functions for ND 89 * 90 */ 91 extern struct rt6_info * rt6_get_dflt_router(struct in6_addr *addr, 92 struct net_device *dev); 93 extern struct rt6_info * rt6_add_dflt_router(struct in6_addr *gwaddr, 94 struct net_device *dev, 95 unsigned int pref); 96 97 extern void rt6_purge_dflt_routers(void); 98 99 extern int rt6_route_rcv(struct net_device *dev, 100 u8 *opt, int len, 101 struct in6_addr *gwaddr); 102 103 extern void rt6_redirect(struct in6_addr *dest, 104 struct in6_addr *src, 105 struct in6_addr *saddr, 106 struct neighbour *neigh, 107 u8 *lladdr, 108 int on_link); 109 110 extern void rt6_pmtu_discovery(struct in6_addr *daddr, 111 struct in6_addr *saddr, 112 struct net_device *dev, 113 u32 pmtu); 114 115 struct netlink_callback; 116 117 struct rt6_rtnl_dump_arg 118 { 119 struct sk_buff *skb; 120 struct netlink_callback *cb; 121 }; 122 123 extern int rt6_dump_route(struct rt6_info *rt, void *p_arg); 124 extern void rt6_ifdown(struct net_device *dev); 125 extern void rt6_mtu_change(struct net_device *dev, unsigned mtu); 126 127 extern rwlock_t rt6_lock; 128 129 /* 130 * Store a destination cache entry in a socket 131 */ 132 static inline void __ip6_dst_store(struct sock *sk, struct dst_entry *dst, 133 struct in6_addr *daddr, struct in6_addr *saddr) 134 { 135 struct ipv6_pinfo *np = inet6_sk(sk); 136 struct rt6_info *rt = (struct rt6_info *) dst; 137 138 sk_setup_caps(sk, dst); 139 np->daddr_cache = daddr; 140 #ifdef CONFIG_IPV6_SUBTREES 141 np->saddr_cache = saddr; 142 #endif 143 np->dst_cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0; 144 } 145 146 static inline void ip6_dst_store(struct sock *sk, struct dst_entry *dst, 147 struct in6_addr *daddr, struct in6_addr *saddr) 148 { 149 write_lock(&sk->sk_dst_lock); 150 __ip6_dst_store(sk, dst, daddr, saddr); 151 write_unlock(&sk->sk_dst_lock); 152 } 153 154 static inline int ipv6_unicast_destination(struct sk_buff *skb) 155 { 156 struct rt6_info *rt = (struct rt6_info *) skb->dst; 157 158 return rt->rt6i_flags & RTF_LOCAL; 159 } 160 161 #endif 162 #endif 163