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1da177e4 LT |
1 | #ifndef _NET_IP6_ROUTE_H |
2 | #define _NET_IP6_ROUTE_H | |
3 | ||
1da177e4 LT |
4 | #define IP6_RT_PRIO_USER 1024 |
5 | #define IP6_RT_PRIO_ADDRCONF 256 | |
6 | #define IP6_RT_PRIO_KERN 512 | |
1da177e4 | 7 | |
70ceb4f5 YH |
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 | |
e69a4adc | 21 | __be32 lifetime; |
70ceb4f5 YH |
22 | __u8 prefix[0]; /* 0,8 or 16 */ |
23 | }; | |
24 | ||
1da177e4 LT |
25 | #ifdef __KERNEL__ |
26 | ||
27 | #include <net/flow.h> | |
28 | #include <net/ip6_fib.h> | |
29 | #include <net/sock.h> | |
1da177e4 LT |
30 | #include <linux/ip.h> |
31 | #include <linux/ipv6.h> | |
32 | ||
77d16f45 YH |
33 | #define RT6_LOOKUP_F_IFACE 0x1 |
34 | #define RT6_LOOKUP_F_REACHABLE 0x2 | |
35 | #define RT6_LOOKUP_F_HAS_SADDR 0x4 | |
36 | ||
1da177e4 LT |
37 | extern struct rt6_info ip6_null_entry; |
38 | ||
101367c2 TG |
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 | ||
1da177e4 LT |
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 | ||
433d49c3 | 49 | extern int ip6_route_init(void); |
1da177e4 LT |
50 | extern void ip6_route_cleanup(void); |
51 | ||
52 | extern int ipv6_route_ioctl(unsigned int cmd, void __user *arg); | |
53 | ||
86872cb5 | 54 | extern int ip6_route_add(struct fib6_config *cfg); |
40e22e8f | 55 | extern int ip6_ins_rt(struct rt6_info *); |
e0a1ad73 | 56 | extern int ip6_del_rt(struct rt6_info *); |
1da177e4 LT |
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 | ||
3b00944c | 76 | extern struct dst_entry *icmp6_dst_alloc(struct net_device *dev, |
1da177e4 | 77 | struct neighbour *neigh, |
3b00944c YH |
78 | struct in6_addr *addr); |
79 | extern int icmp6_dst_gc(int *more); | |
80 | ||
1da177e4 LT |
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, | |
ebacaaa0 YH |
94 | struct net_device *dev, |
95 | unsigned int pref); | |
1da177e4 LT |
96 | |
97 | extern void rt6_purge_dflt_routers(void); | |
98 | ||
70ceb4f5 YH |
99 | extern int rt6_route_rcv(struct net_device *dev, |
100 | u8 *opt, int len, | |
101 | struct in6_addr *gwaddr); | |
102 | ||
1da177e4 | 103 | extern void rt6_redirect(struct in6_addr *dest, |
5e032e32 | 104 | struct in6_addr *src, |
1da177e4 LT |
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 | ||
1da177e4 | 115 | struct netlink_callback; |
1da177e4 | 116 | |
1b43af54 PM |
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); | |
1da177e4 LT |
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 | */ | |
497c615a | 132 | static inline void __ip6_dst_store(struct sock *sk, struct dst_entry *dst, |
8e1ef0a9 | 133 | struct in6_addr *daddr, struct in6_addr *saddr) |
1da177e4 LT |
134 | { |
135 | struct ipv6_pinfo *np = inet6_sk(sk); | |
136 | struct rt6_info *rt = (struct rt6_info *) dst; | |
137 | ||
f83ef8c0 | 138 | sk_setup_caps(sk, dst); |
1da177e4 | 139 | np->daddr_cache = daddr; |
8e1ef0a9 YH |
140 | #ifdef CONFIG_IPV6_SUBTREES |
141 | np->saddr_cache = saddr; | |
142 | #endif | |
1da177e4 | 143 | np->dst_cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0; |
497c615a HX |
144 | } |
145 | ||
146 | static inline void ip6_dst_store(struct sock *sk, struct dst_entry *dst, | |
8e1ef0a9 | 147 | struct in6_addr *daddr, struct in6_addr *saddr) |
497c615a HX |
148 | { |
149 | write_lock(&sk->sk_dst_lock); | |
8e1ef0a9 | 150 | __ip6_dst_store(sk, dst, daddr, saddr); |
1da177e4 LT |
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 |