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[NETNS][IPV6]: inet6_addr - isolate inet6 addresses from proc file
[deliverable/linux.git] / include / net / addrconf.h
CommitLineData
1da177e4
LT		 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
c7dc89c0 20#include <linux/in.h>
6a800d45
PM		 21#include <linux/in6.h>
22
1da177e4
LT		 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
e69a4adc
AV		 39 __be32 valid;
40 __be32 prefered;
41 __be32 reserved2;
1da177e4
LT		 42
43 struct in6_addr prefix;
44};
45
46
47#ifdef __KERNEL__
48
1da177e4
LT		 49#include <linux/netdevice.h>
50#include <net/if_inet6.h>
e4553edd 51#include <net/ipv6.h>
1da177e4
LT		 52
53#define IN6_ADDR_HSIZE 16
54
55extern int addrconf_init(void);
56extern void addrconf_cleanup(void);
57
58extern int addrconf_add_ifaddr(void __user *arg);
59extern int addrconf_del_ifaddr(void __user *arg);
60extern int addrconf_set_dstaddr(void __user *arg);
61
62extern int ipv6_chk_addr(struct in6_addr *addr,
63 struct net_device *dev,
64 int strict);
59fbb3a6 65#if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
3b9f9a1c 66extern int ipv6_chk_home_addr(struct in6_addr *addr);
65d4ed92 67#endif
1da177e4
LT		 68extern struct inet6_ifaddr * ipv6_get_ifaddr(struct in6_addr *addr,
69 struct net_device *dev,
70 int strict);
71extern int ipv6_get_saddr(struct dst_entry *dst,
72 struct in6_addr *daddr,
73 struct in6_addr *saddr);
74extern int ipv6_dev_get_saddr(struct net_device *dev,
75 struct in6_addr *daddr,
76 struct in6_addr *saddr);
95c385b4
NH		 77extern int ipv6_get_lladdr(struct net_device *dev,
78 struct in6_addr *addr,
79 unsigned char banned_flags);
1da177e4
LT		 80extern int ipv6_rcv_saddr_equal(const struct sock *sk,
81 const struct sock *sk2);
82extern void addrconf_join_solict(struct net_device *dev,
83 struct in6_addr *addr);
84extern void addrconf_leave_solict(struct inet6_dev *idev,
85 struct in6_addr *addr);
86
2a8cc6c8
YH		 87/*
88 * IPv6 Address Label subsystem (addrlabel.c)
89 */
90extern int ipv6_addr_label_init(void);
91extern void ipv6_addr_label_rtnl_register(void);
92extern u32 ipv6_addr_label(const struct in6_addr *addr,
93 int type, int ifindex);
94
1da177e4
LT		 95/*
96 * multicast prototypes (mcast.c)
97 */
98extern int ipv6_sock_mc_join(struct sock *sk, int ifindex,
99 struct in6_addr *addr);
100extern int ipv6_sock_mc_drop(struct sock *sk, int ifindex,
101 struct in6_addr *addr);
102extern void ipv6_sock_mc_close(struct sock *sk);
103extern int inet6_mc_check(struct sock *sk, struct in6_addr *mc_addr,
104 struct in6_addr *src_addr);
105
106extern int ipv6_dev_mc_inc(struct net_device *dev, struct in6_addr *addr);
107extern int __ipv6_dev_mc_dec(struct inet6_dev *idev, struct in6_addr *addr);
108extern int ipv6_dev_mc_dec(struct net_device *dev, struct in6_addr *addr);
109extern void ipv6_mc_up(struct inet6_dev *idev);
110extern void ipv6_mc_down(struct inet6_dev *idev);
111extern void ipv6_mc_init_dev(struct inet6_dev *idev);
112extern void ipv6_mc_destroy_dev(struct inet6_dev *idev);
113extern void addrconf_dad_failure(struct inet6_ifaddr *ifp);
114
115extern int ipv6_chk_mcast_addr(struct net_device *dev, struct in6_addr *group,
116 struct in6_addr *src_addr);
117extern int ipv6_is_mld(struct sk_buff *skb, int nexthdr);
118
119extern void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len);
120
121extern int ipv6_get_hoplimit(struct net_device *dev);
122
123/*
124 * anycast prototypes (anycast.c)
125 */
126extern int ipv6_sock_ac_join(struct sock *sk,int ifindex,struct in6_addr *addr);
127extern int ipv6_sock_ac_drop(struct sock *sk,int ifindex,struct in6_addr *addr);
128extern void ipv6_sock_ac_close(struct sock *sk);
129extern int inet6_ac_check(struct sock *sk, struct in6_addr *addr, int ifindex);
130
131extern int ipv6_dev_ac_inc(struct net_device *dev, struct in6_addr *addr);
132extern int __ipv6_dev_ac_dec(struct inet6_dev *idev, struct in6_addr *addr);
133extern int ipv6_chk_acast_addr(struct net_device *dev, struct in6_addr *addr);
134
135
136/* Device notifier */
137extern int register_inet6addr_notifier(struct notifier_block *nb);
138extern int unregister_inet6addr_notifier(struct notifier_block *nb);
139
140static inline struct inet6_dev *
141__in6_dev_get(struct net_device *dev)
142{
8814c4b5 143 return rcu_dereference(dev->ip6_ptr);
1da177e4
LT		 144}
145
1da177e4
LT		 146static inline struct inet6_dev *
147in6_dev_get(struct net_device *dev)
148{
149 struct inet6_dev *idev = NULL;
8814c4b5
YH		 150 rcu_read_lock();
151 idev = __in6_dev_get(dev);
1da177e4
LT		 152 if (idev)
153 atomic_inc(&idev->refcnt);
8814c4b5 154 rcu_read_unlock();
1da177e4
LT		 155 return idev;
156}
157
158extern void in6_dev_finish_destroy(struct inet6_dev *idev);
159
160static inline void
161in6_dev_put(struct inet6_dev *idev)
162{
163 if (atomic_dec_and_test(&idev->refcnt))
164 in6_dev_finish_destroy(idev);
165}
166
167#define __in6_dev_put(idev) atomic_dec(&(idev)->refcnt)
168#define in6_dev_hold(idev) atomic_inc(&(idev)->refcnt)
169
170
171extern void inet6_ifa_finish_destroy(struct inet6_ifaddr *ifp);
172
173static inline void in6_ifa_put(struct inet6_ifaddr *ifp)
174{
175 if (atomic_dec_and_test(&ifp->refcnt))
176 inet6_ifa_finish_destroy(ifp);
177}
178
179#define __in6_ifa_put(ifp) atomic_dec(&(ifp)->refcnt)
180#define in6_ifa_hold(ifp) atomic_inc(&(ifp)->refcnt)
181
182
183extern void addrconf_forwarding_on(void);
184/*
185 * Hash function taken from net_alias.c
186 */
187
188static __inline__ u8 ipv6_addr_hash(const struct in6_addr *addr)
189{
190 __u32 word;
191
192 /*
193 * We perform the hash function over the last 64 bits of the address
194 * This will include the IEEE address token on links that support it.
195 */
196
e69a4adc 197 word = (__force u32)(addr->s6_addr32[2] ^ addr->s6_addr32[3]);
1da177e4
LT		 198 word ^= (word >> 16);
199 word ^= (word >> 8);
200
201 return ((word ^ (word >> 4)) & 0x0f);
202}
203
204/*
205 * compute link-local solicited-node multicast address
206 */
207
208static inline void addrconf_addr_solict_mult(const struct in6_addr *addr,
209 struct in6_addr *solicited)
210{
211 ipv6_addr_set(solicited,
212 __constant_htonl(0xFF020000), 0,
213 __constant_htonl(0x1),
214 __constant_htonl(0xFF000000) | addr->s6_addr32[3]);
215}
216
217
218static inline void ipv6_addr_all_nodes(struct in6_addr *addr)
219{
220 ipv6_addr_set(addr,
221 __constant_htonl(0xFF020000), 0, 0,
222 __constant_htonl(0x1));
223}
224
225static inline void ipv6_addr_all_routers(struct in6_addr *addr)
226{
227 ipv6_addr_set(addr,
228 __constant_htonl(0xFF020000), 0, 0,
229 __constant_htonl(0x2));
230}
231
232static inline int ipv6_addr_is_multicast(const struct in6_addr *addr)
233{
234 return (addr->s6_addr32[0] & __constant_htonl(0xFF000000)) == __constant_htonl(0xFF000000);
235}
236
237static inline int ipv6_addr_is_ll_all_nodes(const struct in6_addr *addr)
238{
239 return (addr->s6_addr32[0] == htonl(0xff020000) &&
240 addr->s6_addr32[1] == 0 &&
241 addr->s6_addr32[2] == 0 &&
242 addr->s6_addr32[3] == htonl(0x00000001));
243}
244
245static inline int ipv6_addr_is_ll_all_routers(const struct in6_addr *addr)
246{
247 return (addr->s6_addr32[0] == htonl(0xff020000) &&
248 addr->s6_addr32[1] == 0 &&
249 addr->s6_addr32[2] == 0 &&
250 addr->s6_addr32[3] == htonl(0x00000002));
251}
252
c7dc89c0
FT		 253static inline int ipv6_isatap_eui64(u8 *eui, __be32 addr)
254{
3db8cda3
JP		 255 eui[0] = (ipv4_is_zeronet(addr) || ipv4_is_private_10(addr) ||
256 ipv4_is_loopback(addr) || ipv4_is_linklocal_169(addr) ||
257 ipv4_is_private_172(addr) || ipv4_is_test_192(addr) ||
258 ipv4_is_anycast_6to4(addr) || ipv4_is_private_192(addr) ||
259 ipv4_is_test_198(addr) || ipv4_is_multicast(addr) ||
260 ipv4_is_badclass(addr)) ? 0x00 : 0x02;
c7dc89c0
FT		 261 eui[1] = 0;
262 eui[2] = 0x5E;
263 eui[3] = 0xFE;
264 memcpy (eui+4, &addr, 4);
265 return 0;
266}
267
268static inline int ipv6_addr_is_isatap(const struct in6_addr *addr)
269{
270 return ((addr->s6_addr32[2] | htonl(0x02000000)) == htonl(0x02005EFE));
271}
272
20380731
ACM		 273#ifdef CONFIG_PROC_FS
274extern int if6_proc_init(void);
275extern void if6_proc_exit(void);
276#endif
277
1da177e4
LT		 278#endif
279#endif
Linux kernel - Deliverables
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