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-rw-r--r--include/net/addrconf.h240
1 files changed, 240 insertions, 0 deletions
diff --git a/include/net/addrconf.h b/include/net/addrconf.h
new file mode 100644
index 000000000000..7af9a13cb9be
--- /dev/null
+++ b/include/net/addrconf.h
@@ -0,0 +1,240 @@
1#ifndef _ADDRCONF_H
2#define _ADDRCONF_H
3
4#define RETRANS_TIMER HZ
5
6#define MAX_RTR_SOLICITATIONS 3
7#define RTR_SOLICITATION_INTERVAL (4*HZ)
8
9#define MIN_VALID_LIFETIME (2*3600) /* 2 hours */
10
11#define TEMP_VALID_LIFETIME (7*86400)
12#define TEMP_PREFERRED_LIFETIME (86400)
13#define REGEN_MAX_RETRY (5)
14#define MAX_DESYNC_FACTOR (600)
15
16#define ADDR_CHECK_FREQUENCY (120*HZ)
17
18#define IPV6_MAX_ADDRESSES 16
19
20struct prefix_info {
21 __u8 type;
22 __u8 length;
23 __u8 prefix_len;
24
25#if defined(__BIG_ENDIAN_BITFIELD)
26 __u8 onlink : 1,
27 autoconf : 1,
28 reserved : 6;
29#elif defined(__LITTLE_ENDIAN_BITFIELD)
30 __u8 reserved : 6,
31 autoconf : 1,
32 onlink : 1;
33#else
34#error "Please fix <asm/byteorder.h>"
35#endif
36 __u32 valid;
37 __u32 prefered;
38 __u32 reserved2;
39
40 struct in6_addr prefix;
41};
42
43
44#ifdef __KERNEL__
45
46#include <linux/in6.h>
47#include <linux/netdevice.h>
48#include <net/if_inet6.h>
49
50#define IN6_ADDR_HSIZE 16
51
52extern int addrconf_init(void);
53extern void addrconf_cleanup(void);
54
55extern int addrconf_add_ifaddr(void __user *arg);
56extern int addrconf_del_ifaddr(void __user *arg);
57extern int addrconf_set_dstaddr(void __user *arg);
58
59extern int ipv6_chk_addr(struct in6_addr *addr,
60 struct net_device *dev,
61 int strict);
62extern struct inet6_ifaddr * ipv6_get_ifaddr(struct in6_addr *addr,
63 struct net_device *dev,
64 int strict);
65extern int ipv6_get_saddr(struct dst_entry *dst,
66 struct in6_addr *daddr,
67 struct in6_addr *saddr);
68extern int ipv6_dev_get_saddr(struct net_device *dev,
69 struct in6_addr *daddr,
70 struct in6_addr *saddr);
71extern int ipv6_get_lladdr(struct net_device *dev, struct in6_addr *);
72extern int ipv6_rcv_saddr_equal(const struct sock *sk,
73 const struct sock *sk2);
74extern void addrconf_join_solict(struct net_device *dev,
75 struct in6_addr *addr);
76extern void addrconf_leave_solict(struct inet6_dev *idev,
77 struct in6_addr *addr);
78
79/*
80 * multicast prototypes (mcast.c)
81 */
82extern int ipv6_sock_mc_join(struct sock *sk, int ifindex,
83 struct in6_addr *addr);
84extern int ipv6_sock_mc_drop(struct sock *sk, int ifindex,
85 struct in6_addr *addr);
86extern void ipv6_sock_mc_close(struct sock *sk);
87extern int inet6_mc_check(struct sock *sk, struct in6_addr *mc_addr,
88 struct in6_addr *src_addr);
89
90extern int ipv6_dev_mc_inc(struct net_device *dev, struct in6_addr *addr);
91extern int __ipv6_dev_mc_dec(struct inet6_dev *idev, struct in6_addr *addr);
92extern int ipv6_dev_mc_dec(struct net_device *dev, struct in6_addr *addr);
93extern void ipv6_mc_up(struct inet6_dev *idev);
94extern void ipv6_mc_down(struct inet6_dev *idev);
95extern void ipv6_mc_init_dev(struct inet6_dev *idev);
96extern void ipv6_mc_destroy_dev(struct inet6_dev *idev);
97extern void addrconf_dad_failure(struct inet6_ifaddr *ifp);
98
99extern int ipv6_chk_mcast_addr(struct net_device *dev, struct in6_addr *group,
100 struct in6_addr *src_addr);
101extern int ipv6_is_mld(struct sk_buff *skb, int nexthdr);
102
103extern void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len);
104
105extern int ipv6_get_hoplimit(struct net_device *dev);
106
107/*
108 * anycast prototypes (anycast.c)
109 */
110extern int ipv6_sock_ac_join(struct sock *sk,int ifindex,struct in6_addr *addr);
111extern int ipv6_sock_ac_drop(struct sock *sk,int ifindex,struct in6_addr *addr);
112extern void ipv6_sock_ac_close(struct sock *sk);
113extern int inet6_ac_check(struct sock *sk, struct in6_addr *addr, int ifindex);
114
115extern int ipv6_dev_ac_inc(struct net_device *dev, struct in6_addr *addr);
116extern int __ipv6_dev_ac_dec(struct inet6_dev *idev, struct in6_addr *addr);
117extern int ipv6_chk_acast_addr(struct net_device *dev, struct in6_addr *addr);
118
119
120/* Device notifier */
121extern int register_inet6addr_notifier(struct notifier_block *nb);
122extern int unregister_inet6addr_notifier(struct notifier_block *nb);
123
124static inline struct inet6_dev *
125__in6_dev_get(struct net_device *dev)
126{
127 return (struct inet6_dev *)dev->ip6_ptr;
128}
129
130extern rwlock_t addrconf_lock;
131
132static inline struct inet6_dev *
133in6_dev_get(struct net_device *dev)
134{
135 struct inet6_dev *idev = NULL;
136 read_lock(&addrconf_lock);
137 idev = dev->ip6_ptr;
138 if (idev)
139 atomic_inc(&idev->refcnt);
140 read_unlock(&addrconf_lock);
141 return idev;
142}
143
144extern void in6_dev_finish_destroy(struct inet6_dev *idev);
145
146static inline void
147in6_dev_put(struct inet6_dev *idev)
148{
149 if (atomic_dec_and_test(&idev->refcnt))
150 in6_dev_finish_destroy(idev);
151}
152
153#define __in6_dev_put(idev) atomic_dec(&(idev)->refcnt)
154#define in6_dev_hold(idev) atomic_inc(&(idev)->refcnt)
155
156
157extern void inet6_ifa_finish_destroy(struct inet6_ifaddr *ifp);
158
159static inline void in6_ifa_put(struct inet6_ifaddr *ifp)
160{
161 if (atomic_dec_and_test(&ifp->refcnt))
162 inet6_ifa_finish_destroy(ifp);
163}
164
165#define __in6_ifa_put(ifp) atomic_dec(&(ifp)->refcnt)
166#define in6_ifa_hold(ifp) atomic_inc(&(ifp)->refcnt)
167
168
169extern void addrconf_forwarding_on(void);
170/*
171 * Hash function taken from net_alias.c
172 */
173
174static __inline__ u8 ipv6_addr_hash(const struct in6_addr *addr)
175{
176 __u32 word;
177
178 /*
179 * We perform the hash function over the last 64 bits of the address
180 * This will include the IEEE address token on links that support it.
181 */
182
183 word = addr->s6_addr32[2] ^ addr->s6_addr32[3];
184 word ^= (word >> 16);
185 word ^= (word >> 8);
186
187 return ((word ^ (word >> 4)) & 0x0f);
188}
189
190/*
191 * compute link-local solicited-node multicast address
192 */
193
194static inline void addrconf_addr_solict_mult(const struct in6_addr *addr,
195 struct in6_addr *solicited)
196{
197 ipv6_addr_set(solicited,
198 __constant_htonl(0xFF020000), 0,
199 __constant_htonl(0x1),
200 __constant_htonl(0xFF000000) | addr->s6_addr32[3]);
201}
202
203
204static inline void ipv6_addr_all_nodes(struct in6_addr *addr)
205{
206 ipv6_addr_set(addr,
207 __constant_htonl(0xFF020000), 0, 0,
208 __constant_htonl(0x1));
209}
210
211static inline void ipv6_addr_all_routers(struct in6_addr *addr)
212{
213 ipv6_addr_set(addr,
214 __constant_htonl(0xFF020000), 0, 0,
215 __constant_htonl(0x2));
216}
217
218static inline int ipv6_addr_is_multicast(const struct in6_addr *addr)
219{
220 return (addr->s6_addr32[0] & __constant_htonl(0xFF000000)) == __constant_htonl(0xFF000000);
221}
222
223static inline int ipv6_addr_is_ll_all_nodes(const struct in6_addr *addr)
224{
225 return (addr->s6_addr32[0] == htonl(0xff020000) &&
226 addr->s6_addr32[1] == 0 &&
227 addr->s6_addr32[2] == 0 &&
228 addr->s6_addr32[3] == htonl(0x00000001));
229}
230
231static inline int ipv6_addr_is_ll_all_routers(const struct in6_addr *addr)
232{
233 return (addr->s6_addr32[0] == htonl(0xff020000) &&
234 addr->s6_addr32[1] == 0 &&
235 addr->s6_addr32[2] == 0 &&
236 addr->s6_addr32[3] == htonl(0x00000002));
237}
238
239#endif
240#endif
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-28 02:03:38 -0500