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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 0x00000001 |
34 | #define RT6_LOOKUP_F_REACHABLE 0x00000002 |
35 | #define RT6_LOOKUP_F_HAS_SADDR 0x00000004 |
36 | #define RT6_LOOKUP_F_SRCPREF_TMP 0x00000008 |
37 | #define RT6_LOOKUP_F_SRCPREF_PUBLIC 0x00000010 |
38 | #define RT6_LOOKUP_F_SRCPREF_COA 0x00000020 |
39 | |
40 | /* |
41 | * rt6_srcprefs2flags() and rt6_flags2srcprefs() translate |
42 | * between IPV6_ADDR_PREFERENCES socket option values |
43 | * IPV6_PREFER_SRC_TMP = 0x1 |
44 | * IPV6_PREFER_SRC_PUBLIC = 0x2 |
45 | * IPV6_PREFER_SRC_COA = 0x4 |
46 | * and above RT6_LOOKUP_F_SRCPREF_xxx flags. |
47 | */ |
48 | static inline int rt6_srcprefs2flags(unsigned int srcprefs) |
49 | { |
50 | /* No need to bitmask because srcprefs have only 3 bits. */ |
51 | return srcprefs << 3; |
52 | } |
53 | |
54 | static inline unsigned int rt6_flags2srcprefs(int flags) |
55 | { |
56 | return (flags >> 3) & 7; |
57 | } |
58 | |
59 | extern void ip6_route_input(struct sk_buff *skb); |
60 | |
61 | extern struct dst_entry * ip6_route_output(struct net *net, |
62 | struct sock *sk, |
63 | struct flowi *fl); |
64 | |
65 | extern int ip6_route_init(void); |
66 | extern void ip6_route_cleanup(void); |
67 | |
68 | extern int ipv6_route_ioctl(struct net *net, |
69 | unsigned int cmd, |
70 | void __user *arg); |
71 | |
72 | extern int ip6_route_add(struct fib6_config *cfg); |
73 | extern int ip6_ins_rt(struct rt6_info *); |
74 | extern int ip6_del_rt(struct rt6_info *); |
75 | |
76 | extern struct rt6_info *rt6_lookup(struct net *net, |
77 | const struct in6_addr *daddr, |
78 | const struct in6_addr *saddr, |
79 | int oif, int flags); |
80 | |
81 | extern struct dst_entry *icmp6_dst_alloc(struct net_device *dev, |
82 | struct neighbour *neigh, |
83 | const struct in6_addr *addr); |
84 | extern int icmp6_dst_gc(void); |
85 | |
86 | extern void fib6_force_start_gc(struct net *net); |
87 | |
88 | extern struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev, |
89 | const struct in6_addr *addr, |
90 | int anycast); |
91 | |
92 | extern int ip6_dst_hoplimit(struct dst_entry *dst); |
93 | |
94 | /* |
95 | * support functions for ND |
96 | * |
97 | */ |
98 | extern struct rt6_info * rt6_get_dflt_router(struct in6_addr *addr, |
99 | struct net_device *dev); |
100 | extern struct rt6_info * rt6_add_dflt_router(struct in6_addr *gwaddr, |
101 | struct net_device *dev, |
102 | unsigned int pref); |
103 | |
104 | extern void rt6_purge_dflt_routers(struct net *net); |
105 | |
106 | extern int rt6_route_rcv(struct net_device *dev, |
107 | u8 *opt, int len, |
108 | struct in6_addr *gwaddr); |
109 | |
110 | extern void rt6_redirect(struct in6_addr *dest, |
111 | struct in6_addr *src, |
112 | struct in6_addr *saddr, |
113 | struct neighbour *neigh, |
114 | u8 *lladdr, |
115 | int on_link); |
116 | |
117 | extern void rt6_pmtu_discovery(struct in6_addr *daddr, |
118 | struct in6_addr *saddr, |
119 | struct net_device *dev, |
120 | u32 pmtu); |
121 | |
122 | struct netlink_callback; |
123 | |
124 | struct rt6_rtnl_dump_arg { |
125 | struct sk_buff *skb; |
126 | struct netlink_callback *cb; |
127 | struct net *net; |
128 | }; |
129 | |
130 | extern int rt6_dump_route(struct rt6_info *rt, void *p_arg); |
131 | extern void rt6_ifdown(struct net *net, struct net_device *dev); |
132 | extern void rt6_mtu_change(struct net_device *dev, unsigned mtu); |
133 | |
134 | |
135 | /* |
136 | * Store a destination cache entry in a socket |
137 | */ |
138 | static inline void __ip6_dst_store(struct sock *sk, struct dst_entry *dst, |
139 | struct in6_addr *daddr, struct in6_addr *saddr) |
140 | { |
141 | struct ipv6_pinfo *np = inet6_sk(sk); |
142 | struct rt6_info *rt = (struct rt6_info *) dst; |
143 | |
144 | sk_setup_caps(sk, dst); |
145 | np->daddr_cache = daddr; |
146 | #ifdef CONFIG_IPV6_SUBTREES |
147 | np->saddr_cache = saddr; |
148 | #endif |
149 | np->dst_cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0; |
150 | } |
151 | |
152 | static inline void ip6_dst_store(struct sock *sk, struct dst_entry *dst, |
153 | struct in6_addr *daddr, struct in6_addr *saddr) |
154 | { |
155 | spin_lock(&sk->sk_dst_lock); |
156 | __ip6_dst_store(sk, dst, daddr, saddr); |
157 | spin_unlock(&sk->sk_dst_lock); |
158 | } |
159 | |
160 | static inline int ipv6_unicast_destination(struct sk_buff *skb) |
161 | { |
162 | struct rt6_info *rt = (struct rt6_info *) skb_dst(skb); |
163 | |
164 | return rt->rt6i_flags & RTF_LOCAL; |
165 | } |
166 | |
167 | #endif |
168 | #endif |
169 |
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
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