| #ifndef _NET_IP6_ROUTE_H |
| #define _NET_IP6_ROUTE_H |
| |
| #define IP6_RT_PRIO_USER 1024 |
| #define IP6_RT_PRIO_ADDRCONF 256 |
| #define IP6_RT_PRIO_KERN 512 |
| |
| struct route_info { |
| __u8 type; |
| __u8 length; |
| __u8 prefix_len; |
| #if defined(__BIG_ENDIAN_BITFIELD) |
| __u8 reserved_h:3, |
| route_pref:2, |
| reserved_l:3; |
| #elif defined(__LITTLE_ENDIAN_BITFIELD) |
| __u8 reserved_l:3, |
| route_pref:2, |
| reserved_h:3; |
| #endif |
| __be32 lifetime; |
| __u8 prefix[0]; /* 0,8 or 16 */ |
| }; |
| |
| #ifdef __KERNEL__ |
| |
| #include <net/flow.h> |
| #include <net/ip6_fib.h> |
| #include <net/sock.h> |
| #include <linux/ip.h> |
| #include <linux/ipv6.h> |
| |
| #define RT6_LOOKUP_F_IFACE 0x00000001 |
| #define RT6_LOOKUP_F_REACHABLE 0x00000002 |
| #define RT6_LOOKUP_F_HAS_SADDR 0x00000004 |
| #define RT6_LOOKUP_F_SRCPREF_TMP 0x00000008 |
| #define RT6_LOOKUP_F_SRCPREF_PUBLIC 0x00000010 |
| #define RT6_LOOKUP_F_SRCPREF_COA 0x00000020 |
| |
| /* |
| * rt6_srcprefs2flags() and rt6_flags2srcprefs() translate |
| * between IPV6_ADDR_PREFERENCES socket option values |
| * IPV6_PREFER_SRC_TMP = 0x1 |
| * IPV6_PREFER_SRC_PUBLIC = 0x2 |
| * IPV6_PREFER_SRC_COA = 0x4 |
| * and above RT6_LOOKUP_F_SRCPREF_xxx flags. |
| */ |
| static inline int rt6_srcprefs2flags(unsigned int srcprefs) |
| { |
| /* No need to bitmask because srcprefs have only 3 bits. */ |
| return srcprefs << 3; |
| } |
| |
| static inline unsigned int rt6_flags2srcprefs(int flags) |
| { |
| return (flags >> 3) & 7; |
| } |
| |
| extern void ip6_route_input(struct sk_buff *skb); |
| |
| extern struct dst_entry * ip6_route_output(struct net *net, |
| struct sock *sk, |
| struct flowi *fl); |
| |
| extern int ip6_route_init(void); |
| extern void ip6_route_cleanup(void); |
| |
| extern int ipv6_route_ioctl(struct net *net, |
| unsigned int cmd, |
| void __user *arg); |
| |
| extern int ip6_route_add(struct fib6_config *cfg); |
| extern int ip6_ins_rt(struct rt6_info *); |
| extern int ip6_del_rt(struct rt6_info *); |
| |
| extern struct rt6_info *rt6_lookup(struct net *net, |
| const struct in6_addr *daddr, |
| const struct in6_addr *saddr, |
| int oif, int flags); |
| |
| extern struct dst_entry *icmp6_dst_alloc(struct net_device *dev, |
| struct neighbour *neigh, |
| const struct in6_addr *addr); |
| extern int icmp6_dst_gc(void); |
| |
| extern void fib6_force_start_gc(struct net *net); |
| |
| extern struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev, |
| const struct in6_addr *addr, |
| int anycast); |
| |
| extern int ip6_dst_hoplimit(struct dst_entry *dst); |
| |
| /* |
| * support functions for ND |
| * |
| */ |
| extern struct rt6_info * rt6_get_dflt_router(struct in6_addr *addr, |
| struct net_device *dev); |
| extern struct rt6_info * rt6_add_dflt_router(struct in6_addr *gwaddr, |
| struct net_device *dev, |
| unsigned int pref); |
| |
| extern void rt6_purge_dflt_routers(struct net *net); |
| |
| extern int rt6_route_rcv(struct net_device *dev, |
| u8 *opt, int len, |
| struct in6_addr *gwaddr); |
| |
| extern void rt6_redirect(struct in6_addr *dest, |
| struct in6_addr *src, |
| struct in6_addr *saddr, |
| struct neighbour *neigh, |
| u8 *lladdr, |
| int on_link); |
| |
| extern void rt6_pmtu_discovery(struct in6_addr *daddr, |
| struct in6_addr *saddr, |
| struct net_device *dev, |
| u32 pmtu); |
| |
| struct netlink_callback; |
| |
| struct rt6_rtnl_dump_arg { |
| struct sk_buff *skb; |
| struct netlink_callback *cb; |
| struct net *net; |
| }; |
| |
| extern int rt6_dump_route(struct rt6_info *rt, void *p_arg); |
| extern void rt6_ifdown(struct net *net, struct net_device *dev); |
| extern void rt6_mtu_change(struct net_device *dev, unsigned mtu); |
| |
| |
| /* |
| * Store a destination cache entry in a socket |
| */ |
| static inline void __ip6_dst_store(struct sock *sk, struct dst_entry *dst, |
| struct in6_addr *daddr, struct in6_addr *saddr) |
| { |
| struct ipv6_pinfo *np = inet6_sk(sk); |
| struct rt6_info *rt = (struct rt6_info *) dst; |
| |
| sk_setup_caps(sk, dst); |
| np->daddr_cache = daddr; |
| #ifdef CONFIG_IPV6_SUBTREES |
| np->saddr_cache = saddr; |
| #endif |
| np->dst_cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0; |
| } |
| |
| static inline void ip6_dst_store(struct sock *sk, struct dst_entry *dst, |
| struct in6_addr *daddr, struct in6_addr *saddr) |
| { |
| write_lock(&sk->sk_dst_lock); |
| __ip6_dst_store(sk, dst, daddr, saddr); |
| write_unlock(&sk->sk_dst_lock); |
| } |
| |
| static inline int ipv6_unicast_destination(struct sk_buff *skb) |
| { |
| struct rt6_info *rt = (struct rt6_info *) skb_dst(skb); |
| |
| return rt->rt6i_flags & RTF_LOCAL; |
| } |
| |
| #endif |
| #endif |