]>
git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - include/net/addrconf.h
4 #define MAX_RTR_SOLICITATIONS 3
5 #define RTR_SOLICITATION_INTERVAL (4*HZ)
7 #define MIN_VALID_LIFETIME (2*3600) /* 2 hours */
9 #define TEMP_VALID_LIFETIME (7*86400)
10 #define TEMP_PREFERRED_LIFETIME (86400)
11 #define REGEN_MAX_RETRY (5)
12 #define MAX_DESYNC_FACTOR (600)
14 #define ADDR_CHECK_FREQUENCY (120*HZ)
16 #define IPV6_MAX_ADDRESSES 16
19 #include <linux/in6.h>
26 #if defined(__BIG_ENDIAN_BITFIELD)
30 #elif defined(__LITTLE_ENDIAN_BITFIELD)
35 #error "Please fix <asm/byteorder.h>"
41 struct in6_addr prefix
;
45 #include <linux/netdevice.h>
46 #include <net/if_inet6.h>
49 #define IN6_ADDR_HSIZE 16
51 extern int addrconf_init(void);
52 extern void addrconf_cleanup(void);
54 extern int addrconf_add_ifaddr(struct net
*net
,
56 extern int addrconf_del_ifaddr(struct net
*net
,
58 extern int addrconf_set_dstaddr(struct net
*net
,
61 extern int ipv6_chk_addr(struct net
*net
,
62 const struct in6_addr
*addr
,
63 struct net_device
*dev
,
66 #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
67 extern int ipv6_chk_home_addr(struct net
*net
,
68 const struct in6_addr
*addr
);
71 extern int ipv6_chk_prefix(const struct in6_addr
*addr
,
72 struct net_device
*dev
);
74 extern struct inet6_ifaddr
*ipv6_get_ifaddr(struct net
*net
,
75 const struct in6_addr
*addr
,
76 struct net_device
*dev
,
79 extern int ipv6_dev_get_saddr(struct net
*net
,
80 struct net_device
*dev
,
81 const struct in6_addr
*daddr
,
82 unsigned int srcprefs
,
83 struct in6_addr
*saddr
);
84 extern int ipv6_get_lladdr(struct net_device
*dev
,
85 struct in6_addr
*addr
,
86 unsigned char banned_flags
);
87 extern int ipv6_rcv_saddr_equal(const struct sock
*sk
,
88 const struct sock
*sk2
);
89 extern void addrconf_join_solict(struct net_device
*dev
,
90 const struct in6_addr
*addr
);
91 extern void addrconf_leave_solict(struct inet6_dev
*idev
,
92 const struct in6_addr
*addr
);
94 static inline unsigned long addrconf_timeout_fixup(u32 timeout
,
97 if (timeout
== 0xffffffff)
101 * Avoid arithmetic overflow.
102 * Assuming unit is constant and non-zero, this "if" statement
103 * will go away on 64bit archs.
105 if (0xfffffffe > LONG_MAX
/ unit
&& timeout
> LONG_MAX
/ unit
)
106 return LONG_MAX
/ unit
;
111 static inline int addrconf_finite_timeout(unsigned long timeout
)
117 * IPv6 Address Label subsystem (addrlabel.c)
119 extern int ipv6_addr_label_init(void);
120 extern void ipv6_addr_label_cleanup(void);
121 extern void ipv6_addr_label_rtnl_register(void);
122 extern u32
ipv6_addr_label(struct net
*net
,
123 const struct in6_addr
*addr
,
124 int type
, int ifindex
);
127 * multicast prototypes (mcast.c)
129 extern int ipv6_sock_mc_join(struct sock
*sk
, int ifindex
,
130 const struct in6_addr
*addr
);
131 extern int ipv6_sock_mc_drop(struct sock
*sk
, int ifindex
,
132 const struct in6_addr
*addr
);
133 extern void ipv6_sock_mc_close(struct sock
*sk
);
134 extern int inet6_mc_check(struct sock
*sk
,
135 const struct in6_addr
*mc_addr
,
136 const struct in6_addr
*src_addr
);
138 extern int ipv6_dev_mc_inc(struct net_device
*dev
, const struct in6_addr
*addr
);
139 extern int __ipv6_dev_mc_dec(struct inet6_dev
*idev
, const struct in6_addr
*addr
);
140 extern int ipv6_dev_mc_dec(struct net_device
*dev
, const struct in6_addr
*addr
);
141 extern void ipv6_mc_up(struct inet6_dev
*idev
);
142 extern void ipv6_mc_down(struct inet6_dev
*idev
);
143 extern void ipv6_mc_unmap(struct inet6_dev
*idev
);
144 extern void ipv6_mc_remap(struct inet6_dev
*idev
);
145 extern void ipv6_mc_init_dev(struct inet6_dev
*idev
);
146 extern void ipv6_mc_destroy_dev(struct inet6_dev
*idev
);
147 extern void addrconf_dad_failure(struct inet6_ifaddr
*ifp
);
149 extern int ipv6_chk_mcast_addr(struct net_device
*dev
,
150 const struct in6_addr
*group
,
151 const struct in6_addr
*src_addr
);
152 extern int ipv6_is_mld(struct sk_buff
*skb
, int nexthdr
);
154 extern void addrconf_prefix_rcv(struct net_device
*dev
, u8
*opt
, int len
);
157 * anycast prototypes (anycast.c)
159 extern int ipv6_sock_ac_join(struct sock
*sk
,int ifindex
, const struct in6_addr
*addr
);
160 extern int ipv6_sock_ac_drop(struct sock
*sk
,int ifindex
, const struct in6_addr
*addr
);
161 extern void ipv6_sock_ac_close(struct sock
*sk
);
162 extern int inet6_ac_check(struct sock
*sk
, const struct in6_addr
*addr
, int ifindex
);
164 extern int ipv6_dev_ac_inc(struct net_device
*dev
, const struct in6_addr
*addr
);
165 extern int __ipv6_dev_ac_dec(struct inet6_dev
*idev
, const struct in6_addr
*addr
);
166 extern int ipv6_chk_acast_addr(struct net
*net
, struct net_device
*dev
,
167 const struct in6_addr
*addr
);
170 /* Device notifier */
171 extern int register_inet6addr_notifier(struct notifier_block
*nb
);
172 extern int unregister_inet6addr_notifier(struct notifier_block
*nb
);
175 * __in6_dev_get - get inet6_dev pointer from netdevice
176 * @dev: network device
178 * Caller must hold rcu_read_lock or RTNL, because this function
179 * does not take a reference on the inet6_dev.
181 static inline struct inet6_dev
*__in6_dev_get(const struct net_device
*dev
)
183 return rcu_dereference_rtnl(dev
->ip6_ptr
);
187 * in6_dev_get - get inet6_dev pointer from netdevice
188 * @dev: network device
190 * This version can be used in any context, and takes a reference
191 * on the inet6_dev. Callers must use in6_dev_put() later to
192 * release this reference.
194 static inline struct inet6_dev
*in6_dev_get(const struct net_device
*dev
)
196 struct inet6_dev
*idev
;
199 idev
= rcu_dereference(dev
->ip6_ptr
);
201 atomic_inc(&idev
->refcnt
);
206 extern void in6_dev_finish_destroy(struct inet6_dev
*idev
);
208 static inline void in6_dev_put(struct inet6_dev
*idev
)
210 if (atomic_dec_and_test(&idev
->refcnt
))
211 in6_dev_finish_destroy(idev
);
214 static inline void __in6_dev_put(struct inet6_dev
*idev
)
216 atomic_dec(&idev
->refcnt
);
219 static inline void in6_dev_hold(struct inet6_dev
*idev
)
221 atomic_inc(&idev
->refcnt
);
224 extern void inet6_ifa_finish_destroy(struct inet6_ifaddr
*ifp
);
226 static inline void in6_ifa_put(struct inet6_ifaddr
*ifp
)
228 if (atomic_dec_and_test(&ifp
->refcnt
))
229 inet6_ifa_finish_destroy(ifp
);
232 static inline void __in6_ifa_put(struct inet6_ifaddr
*ifp
)
234 atomic_dec(&ifp
->refcnt
);
237 static inline void in6_ifa_hold(struct inet6_ifaddr
*ifp
)
239 atomic_inc(&ifp
->refcnt
);
244 * compute link-local solicited-node multicast address
247 static inline void addrconf_addr_solict_mult(const struct in6_addr
*addr
,
248 struct in6_addr
*solicited
)
250 ipv6_addr_set(solicited
,
251 htonl(0xFF020000), 0,
253 htonl(0xFF000000) | addr
->s6_addr32
[3]);
256 static inline int ipv6_addr_is_multicast(const struct in6_addr
*addr
)
258 return (addr
->s6_addr32
[0] & htonl(0xFF000000)) == htonl(0xFF000000);
261 static inline int ipv6_addr_is_ll_all_nodes(const struct in6_addr
*addr
)
263 return ((addr
->s6_addr32
[0] ^ htonl(0xff020000)) |
264 addr
->s6_addr32
[1] | addr
->s6_addr32
[2] |
265 (addr
->s6_addr32
[3] ^ htonl(0x00000001))) == 0;
268 static inline int ipv6_addr_is_ll_all_routers(const struct in6_addr
*addr
)
270 return ((addr
->s6_addr32
[0] ^ htonl(0xff020000)) |
271 addr
->s6_addr32
[1] | addr
->s6_addr32
[2] |
272 (addr
->s6_addr32
[3] ^ htonl(0x00000002))) == 0;
275 static inline int ipv6_addr_is_isatap(const struct in6_addr
*addr
)
277 return (addr
->s6_addr32
[2] | htonl(0x02000000)) == htonl(0x02005EFE);
280 #ifdef CONFIG_PROC_FS
281 extern int if6_proc_init(void);
282 extern void if6_proc_exit(void);