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)
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
20#include <linux/in.h>
21#include <linux/in6.h>
22
23struct prefix_info {
24 __u8 type;
25 __u8 length;
26 __u8 prefix_len;
27
28#if defined(__BIG_ENDIAN_BITFIELD)
29 __u8 onlink : 1,
30 autoconf : 1,
31 reserved : 6;
32#elif defined(__LITTLE_ENDIAN_BITFIELD)
33 __u8 reserved : 6,
34 autoconf : 1,
35 onlink : 1;
36#else
37#error "Please fix <asm/byteorder.h>"
38#endif
39 __be32 valid;
40 __be32 prefered;
41 __be32 reserved2;
42
43 struct in6_addr prefix;
44};
45
46
47#ifdef __KERNEL__
48
49#include <linux/netdevice.h>
50#include <net/if_inet6.h>
51#include <net/ipv6.h>
52
53#define IN6_ADDR_HSIZE 16
54
55extern int addrconf_init(void);
56extern void addrconf_cleanup(void);
57
58extern int addrconf_add_ifaddr(struct net *net,
59 void __user *arg);
60extern int addrconf_del_ifaddr(struct net *net,
61 void __user *arg);
62extern int addrconf_set_dstaddr(struct net *net,
63 void __user *arg);
64
65extern int ipv6_chk_addr(struct net *net,
66 struct in6_addr *addr,
67 struct net_device *dev,
68 int strict);
69
70#if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
71extern int ipv6_chk_home_addr(struct net *net,
72 struct in6_addr *addr);
73#endif
74
75extern int ipv6_chk_prefix(struct in6_addr *addr,
76 struct net_device *dev);
77
78extern struct inet6_ifaddr *ipv6_get_ifaddr(struct net *net,
79 const struct in6_addr *addr,
80 struct net_device *dev,
81 int strict);
82
83extern int ipv6_dev_get_saddr(struct net *net,
84 struct net_device *dev,
85 const struct in6_addr *daddr,
86 unsigned int srcprefs,
87 struct in6_addr *saddr);
88extern int ipv6_get_lladdr(struct net_device *dev,
89 struct in6_addr *addr,
90 unsigned char banned_flags);
91extern int ipv6_rcv_saddr_equal(const struct sock *sk,
92 const struct sock *sk2);
93extern void addrconf_join_solict(struct net_device *dev,
94 struct in6_addr *addr);
95extern void addrconf_leave_solict(struct inet6_dev *idev,
96 struct in6_addr *addr);
97
98static inline unsigned long addrconf_timeout_fixup(u32 timeout,
99 unsigned unit)
100{
101 if (timeout == 0xffffffff)
102 return ~0UL;
103
104
105
106
107
108
109 if (0xfffffffe > LONG_MAX / unit && timeout > LONG_MAX / unit)
110 return LONG_MAX / unit;
111
112 return timeout;
113}
114
115static inline int addrconf_finite_timeout(unsigned long timeout)
116{
117 return ~timeout;
118}
119
120
121
122
123extern int ipv6_addr_label_init(void);
124extern void ipv6_addr_label_rtnl_register(void);
125extern u32 ipv6_addr_label(struct net *net,
126 const struct in6_addr *addr,
127 int type, int ifindex);
128
129
130
131
132extern int ipv6_sock_mc_join(struct sock *sk, int ifindex,
133 const struct in6_addr *addr);
134extern int ipv6_sock_mc_drop(struct sock *sk, int ifindex,
135 const struct in6_addr *addr);
136extern void ipv6_sock_mc_close(struct sock *sk);
137extern int inet6_mc_check(struct sock *sk,
138 const struct in6_addr *mc_addr,
139 const struct in6_addr *src_addr);
140
141extern int ipv6_dev_mc_inc(struct net_device *dev, const struct in6_addr *addr);
142extern int __ipv6_dev_mc_dec(struct inet6_dev *idev, const struct in6_addr *addr);
143extern int ipv6_dev_mc_dec(struct net_device *dev, const struct in6_addr *addr);
144extern void ipv6_mc_up(struct inet6_dev *idev);
145extern void ipv6_mc_down(struct inet6_dev *idev);
146extern void ipv6_mc_unmap(struct inet6_dev *idev);
147extern void ipv6_mc_remap(struct inet6_dev *idev);
148extern void ipv6_mc_init_dev(struct inet6_dev *idev);
149extern void ipv6_mc_destroy_dev(struct inet6_dev *idev);
150extern void addrconf_dad_failure(struct inet6_ifaddr *ifp);
151
152extern int ipv6_chk_mcast_addr(struct net_device *dev,
153 const struct in6_addr *group,
154 const struct in6_addr *src_addr);
155extern int ipv6_is_mld(struct sk_buff *skb, int nexthdr);
156
157extern void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len);
158
159
160
161
162extern int ipv6_sock_ac_join(struct sock *sk,int ifindex,struct in6_addr *addr);
163extern int ipv6_sock_ac_drop(struct sock *sk,int ifindex,struct in6_addr *addr);
164extern void ipv6_sock_ac_close(struct sock *sk);
165extern int inet6_ac_check(struct sock *sk, struct in6_addr *addr, int ifindex);
166
167extern int ipv6_dev_ac_inc(struct net_device *dev, struct in6_addr *addr);
168extern int __ipv6_dev_ac_dec(struct inet6_dev *idev, struct in6_addr *addr);
169extern int ipv6_chk_acast_addr(struct net *net, struct net_device *dev,
170 struct in6_addr *addr);
171
172
173
174extern int register_inet6addr_notifier(struct notifier_block *nb);
175extern int unregister_inet6addr_notifier(struct notifier_block *nb);
176
177static inline struct inet6_dev *
178__in6_dev_get(struct net_device *dev)
179{
180 return rcu_dereference_check(dev->ip6_ptr,
181 rcu_read_lock_held() ||
182 lockdep_rtnl_is_held());
183}
184
185static inline struct inet6_dev *
186in6_dev_get(struct net_device *dev)
187{
188 struct inet6_dev *idev = NULL;
189 rcu_read_lock();
190 idev = __in6_dev_get(dev);
191 if (idev)
192 atomic_inc(&idev->refcnt);
193 rcu_read_unlock();
194 return idev;
195}
196
197extern void in6_dev_finish_destroy(struct inet6_dev *idev);
198
199static inline void
200in6_dev_put(struct inet6_dev *idev)
201{
202 if (atomic_dec_and_test(&idev->refcnt))
203 in6_dev_finish_destroy(idev);
204}
205
206#define __in6_dev_put(idev) atomic_dec(&(idev)->refcnt)
207#define in6_dev_hold(idev) atomic_inc(&(idev)->refcnt)
208
209
210extern void inet6_ifa_finish_destroy(struct inet6_ifaddr *ifp);
211
212static inline void in6_ifa_put(struct inet6_ifaddr *ifp)
213{
214 if (atomic_dec_and_test(&ifp->refcnt))
215 inet6_ifa_finish_destroy(ifp);
216}
217
218#define __in6_ifa_put(ifp) atomic_dec(&(ifp)->refcnt)
219#define in6_ifa_hold(ifp) atomic_inc(&(ifp)->refcnt)
220
221
222
223
224
225
226
227static inline void addrconf_addr_solict_mult(const struct in6_addr *addr,
228 struct in6_addr *solicited)
229{
230 ipv6_addr_set(solicited,
231 htonl(0xFF020000), 0,
232 htonl(0x1),
233 htonl(0xFF000000) | addr->s6_addr32[3]);
234}
235
236static inline int ipv6_addr_is_multicast(const struct in6_addr *addr)
237{
238 return (addr->s6_addr32[0] & htonl(0xFF000000)) == htonl(0xFF000000);
239}
240
241static inline int ipv6_addr_is_ll_all_nodes(const struct in6_addr *addr)
242{
243 return (((addr->s6_addr32[0] ^ htonl(0xff020000)) |
244 addr->s6_addr32[1] | addr->s6_addr32[2] |
245 (addr->s6_addr32[3] ^ htonl(0x00000001))) == 0);
246}
247
248static inline int ipv6_addr_is_ll_all_routers(const struct in6_addr *addr)
249{
250 return (((addr->s6_addr32[0] ^ htonl(0xff020000)) |
251 addr->s6_addr32[1] | addr->s6_addr32[2] |
252 (addr->s6_addr32[3] ^ htonl(0x00000002))) == 0);
253}
254
255extern int __ipv6_isatap_ifid(u8 *eui, __be32 addr);
256
257static inline int ipv6_addr_is_isatap(const struct in6_addr *addr)
258{
259 return ((addr->s6_addr32[2] | htonl(0x02000000)) == htonl(0x02005EFE));
260}
261
262#ifdef CONFIG_PROC_FS
263extern int if6_proc_init(void);
264extern void if6_proc_exit(void);
265#endif
266
267#endif
268#endif
269
