Commit | Line | Data |
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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 | |
1da177e4 | 6 | |
70ceb4f5 YH |
7 | struct route_info { |
8 | __u8 type; | |
9 | __u8 length; | |
10 | __u8 prefix_len; | |
11 | #if defined(__BIG_ENDIAN_BITFIELD) | |
12 | __u8 reserved_h:3, | |
13 | route_pref:2, | |
14 | reserved_l:3; | |
15 | #elif defined(__LITTLE_ENDIAN_BITFIELD) | |
16 | __u8 reserved_l:3, | |
17 | route_pref:2, | |
18 | reserved_h:3; | |
19 | #endif | |
e69a4adc | 20 | __be32 lifetime; |
70ceb4f5 YH |
21 | __u8 prefix[0]; /* 0,8 or 16 */ |
22 | }; | |
23 | ||
1da177e4 LT |
24 | #ifdef __KERNEL__ |
25 | ||
26 | #include <net/flow.h> | |
27 | #include <net/ip6_fib.h> | |
28 | #include <net/sock.h> | |
1da177e4 LT |
29 | #include <linux/ip.h> |
30 | #include <linux/ipv6.h> | |
31 | ||
7cbca67c YH |
32 | #define RT6_LOOKUP_F_IFACE 0x00000001 |
33 | #define RT6_LOOKUP_F_REACHABLE 0x00000002 | |
34 | #define RT6_LOOKUP_F_HAS_SADDR 0x00000004 | |
35 | #define RT6_LOOKUP_F_SRCPREF_TMP 0x00000008 | |
36 | #define RT6_LOOKUP_F_SRCPREF_PUBLIC 0x00000010 | |
37 | #define RT6_LOOKUP_F_SRCPREF_COA 0x00000020 | |
77d16f45 | 38 | |
0c9a2ac1 YH |
39 | /* |
40 | * rt6_srcprefs2flags() and rt6_flags2srcprefs() translate | |
41 | * between IPV6_ADDR_PREFERENCES socket option values | |
42 | * IPV6_PREFER_SRC_TMP = 0x1 | |
43 | * IPV6_PREFER_SRC_PUBLIC = 0x2 | |
44 | * IPV6_PREFER_SRC_COA = 0x4 | |
45 | * and above RT6_LOOKUP_F_SRCPREF_xxx flags. | |
46 | */ | |
47 | static inline int rt6_srcprefs2flags(unsigned int srcprefs) | |
48 | { | |
49 | /* No need to bitmask because srcprefs have only 3 bits. */ | |
50 | return srcprefs << 3; | |
51 | } | |
52 | ||
53 | static inline unsigned int rt6_flags2srcprefs(int flags) | |
54 | { | |
55 | return (flags >> 3) & 7; | |
56 | } | |
1da177e4 | 57 | |
b3419363 DM |
58 | extern void rt6_bind_peer(struct rt6_info *rt, |
59 | int create); | |
60 | ||
15c05425 DM |
61 | static inline struct inet_peer *rt6_get_peer(struct rt6_info *rt) |
62 | { | |
63 | if (rt->rt6i_peer) | |
64 | return rt->rt6i_peer; | |
65 | ||
66 | rt6_bind_peer(rt, 0); | |
67 | return rt->rt6i_peer; | |
68 | } | |
69 | ||
1da177e4 LT |
70 | extern void ip6_route_input(struct sk_buff *skb); |
71 | ||
4591db4f | 72 | extern struct dst_entry * ip6_route_output(struct net *net, |
9c7a4f9c | 73 | const struct sock *sk, |
4c9483b2 | 74 | struct flowi6 *fl6); |
1da177e4 | 75 | |
433d49c3 | 76 | extern int ip6_route_init(void); |
1da177e4 LT |
77 | extern void ip6_route_cleanup(void); |
78 | ||
5578689a DL |
79 | extern int ipv6_route_ioctl(struct net *net, |
80 | unsigned int cmd, | |
81 | void __user *arg); | |
1da177e4 | 82 | |
86872cb5 | 83 | extern int ip6_route_add(struct fib6_config *cfg); |
40e22e8f | 84 | extern int ip6_ins_rt(struct rt6_info *); |
e0a1ad73 | 85 | extern int ip6_del_rt(struct rt6_info *); |
1da177e4 | 86 | |
606a2b48 | 87 | extern struct rt6_info *rt6_lookup(struct net *net, |
9acd9f3a YH |
88 | const struct in6_addr *daddr, |
89 | const struct in6_addr *saddr, | |
1da177e4 LT |
90 | int oif, int flags); |
91 | ||
3b00944c | 92 | extern struct dst_entry *icmp6_dst_alloc(struct net_device *dev, |
1da177e4 | 93 | struct neighbour *neigh, |
9acd9f3a | 94 | const struct in6_addr *addr); |
3d0f24a7 | 95 | extern int icmp6_dst_gc(void); |
3b00944c | 96 | |
63152fc0 | 97 | extern void fib6_force_start_gc(struct net *net); |
1da177e4 LT |
98 | |
99 | extern struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev, | |
100 | const struct in6_addr *addr, | |
101 | int anycast); | |
102 | ||
6b75d090 YH |
103 | extern int ip6_dst_hoplimit(struct dst_entry *dst); |
104 | ||
1da177e4 LT |
105 | /* |
106 | * support functions for ND | |
107 | * | |
108 | */ | |
109 | extern struct rt6_info * rt6_get_dflt_router(struct in6_addr *addr, | |
110 | struct net_device *dev); | |
111 | extern struct rt6_info * rt6_add_dflt_router(struct in6_addr *gwaddr, | |
ebacaaa0 YH |
112 | struct net_device *dev, |
113 | unsigned int pref); | |
1da177e4 | 114 | |
7b4da532 | 115 | extern void rt6_purge_dflt_routers(struct net *net); |
1da177e4 | 116 | |
70ceb4f5 YH |
117 | extern int rt6_route_rcv(struct net_device *dev, |
118 | u8 *opt, int len, | |
119 | struct in6_addr *gwaddr); | |
120 | ||
1da177e4 | 121 | extern void rt6_redirect(struct in6_addr *dest, |
5e032e32 | 122 | struct in6_addr *src, |
1da177e4 LT |
123 | struct in6_addr *saddr, |
124 | struct neighbour *neigh, | |
125 | u8 *lladdr, | |
126 | int on_link); | |
127 | ||
128 | extern void rt6_pmtu_discovery(struct in6_addr *daddr, | |
129 | struct in6_addr *saddr, | |
130 | struct net_device *dev, | |
131 | u32 pmtu); | |
132 | ||
1da177e4 | 133 | struct netlink_callback; |
1da177e4 | 134 | |
fd2c3ef7 | 135 | struct rt6_rtnl_dump_arg { |
1b43af54 PM |
136 | struct sk_buff *skb; |
137 | struct netlink_callback *cb; | |
191cd582 | 138 | struct net *net; |
1b43af54 PM |
139 | }; |
140 | ||
141 | extern int rt6_dump_route(struct rt6_info *rt, void *p_arg); | |
f3db4851 | 142 | extern void rt6_ifdown(struct net *net, struct net_device *dev); |
1da177e4 LT |
143 | extern void rt6_mtu_change(struct net_device *dev, unsigned mtu); |
144 | ||
1da177e4 LT |
145 | |
146 | /* | |
147 | * Store a destination cache entry in a socket | |
148 | */ | |
497c615a | 149 | static inline void __ip6_dst_store(struct sock *sk, struct dst_entry *dst, |
8e1ef0a9 | 150 | struct in6_addr *daddr, struct in6_addr *saddr) |
1da177e4 LT |
151 | { |
152 | struct ipv6_pinfo *np = inet6_sk(sk); | |
153 | struct rt6_info *rt = (struct rt6_info *) dst; | |
154 | ||
f83ef8c0 | 155 | sk_setup_caps(sk, dst); |
1da177e4 | 156 | np->daddr_cache = daddr; |
8e1ef0a9 YH |
157 | #ifdef CONFIG_IPV6_SUBTREES |
158 | np->saddr_cache = saddr; | |
159 | #endif | |
1da177e4 | 160 | np->dst_cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0; |
497c615a HX |
161 | } |
162 | ||
163 | static inline void ip6_dst_store(struct sock *sk, struct dst_entry *dst, | |
8e1ef0a9 | 164 | struct in6_addr *daddr, struct in6_addr *saddr) |
497c615a | 165 | { |
b6c6712a | 166 | spin_lock(&sk->sk_dst_lock); |
8e1ef0a9 | 167 | __ip6_dst_store(sk, dst, daddr, saddr); |
b6c6712a | 168 | spin_unlock(&sk->sk_dst_lock); |
1da177e4 LT |
169 | } |
170 | ||
171 | static inline int ipv6_unicast_destination(struct sk_buff *skb) | |
172 | { | |
adf30907 | 173 | struct rt6_info *rt = (struct rt6_info *) skb_dst(skb); |
1da177e4 LT |
174 | |
175 | return rt->rt6i_flags & RTF_LOCAL; | |
176 | } | |
177 | ||
ad0081e4 DS |
178 | int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *)); |
179 | ||
180 | static inline int ip6_skb_dst_mtu(struct sk_buff *skb) | |
181 | { | |
182 | struct ipv6_pinfo *np = skb->sk ? inet6_sk(skb->sk) : NULL; | |
183 | ||
184 | return (np && np->pmtudisc == IPV6_PMTUDISC_PROBE) ? | |
185 | skb_dst(skb)->dev->mtu : dst_mtu(skb_dst(skb)); | |
186 | } | |
187 | ||
1da177e4 LT |
188 | #endif |
189 | #endif |