]>
git.proxmox.com Git - mirror_ubuntu-zesty-kernel.git/blob - include/net/addrconf.h
4 #define RETRANS_TIMER HZ
6 #define MAX_RTR_SOLICITATIONS 3
7 #define RTR_SOLICITATION_INTERVAL (4*HZ)
9 #define MIN_VALID_LIFETIME (2*3600) /* 2 hours */
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)
16 #define ADDR_CHECK_FREQUENCY (120*HZ)
18 #define IPV6_MAX_ADDRESSES 16
21 #include <linux/in6.h>
28 #if defined(__BIG_ENDIAN_BITFIELD)
32 #elif defined(__LITTLE_ENDIAN_BITFIELD)
37 #error "Please fix <asm/byteorder.h>"
43 struct in6_addr prefix
;
49 #include <linux/netdevice.h>
50 #include <net/if_inet6.h>
53 #define IN6_ADDR_HSIZE 16
55 extern int addrconf_init(void);
56 extern void addrconf_cleanup(void);
58 extern int addrconf_add_ifaddr(struct net
*net
,
60 extern int addrconf_del_ifaddr(struct net
*net
,
62 extern int addrconf_set_dstaddr(struct net
*net
,
65 extern int ipv6_chk_addr(struct net
*net
,
66 struct in6_addr
*addr
,
67 struct net_device
*dev
,
70 #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
71 extern int ipv6_chk_home_addr(struct net
*net
,
72 struct in6_addr
*addr
);
75 extern int ipv6_chk_prefix(struct in6_addr
*addr
,
76 struct net_device
*dev
);
78 extern struct inet6_ifaddr
*ipv6_get_ifaddr(struct net
*net
,
79 const struct in6_addr
*addr
,
80 struct net_device
*dev
,
83 extern 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
);
88 extern int ipv6_get_lladdr(struct net_device
*dev
,
89 struct in6_addr
*addr
,
90 unsigned char banned_flags
);
91 extern int ipv6_rcv_saddr_equal(const struct sock
*sk
,
92 const struct sock
*sk2
);
93 extern void addrconf_join_solict(struct net_device
*dev
,
94 struct in6_addr
*addr
);
95 extern void addrconf_leave_solict(struct inet6_dev
*idev
,
96 struct in6_addr
*addr
);
98 static inline unsigned long addrconf_timeout_fixup(u32 timeout
,
101 if (timeout
== 0xffffffff)
105 * Avoid arithmetic overflow.
106 * Assuming unit is constant and non-zero, this "if" statement
107 * will go away on 64bit archs.
109 if (0xfffffffe > LONG_MAX
/ unit
&& timeout
> LONG_MAX
/ unit
)
110 return LONG_MAX
/ unit
;
115 static inline int addrconf_finite_timeout(unsigned long timeout
)
121 * IPv6 Address Label subsystem (addrlabel.c)
123 extern int ipv6_addr_label_init(void);
124 extern void ipv6_addr_label_rtnl_register(void);
125 extern u32
ipv6_addr_label(struct net
*net
,
126 const struct in6_addr
*addr
,
127 int type
, int ifindex
);
130 * multicast prototypes (mcast.c)
132 extern int ipv6_sock_mc_join(struct sock
*sk
, int ifindex
,
133 const struct in6_addr
*addr
);
134 extern int ipv6_sock_mc_drop(struct sock
*sk
, int ifindex
,
135 const struct in6_addr
*addr
);
136 extern void ipv6_sock_mc_close(struct sock
*sk
);
137 extern int inet6_mc_check(struct sock
*sk
,
138 const struct in6_addr
*mc_addr
,
139 const struct in6_addr
*src_addr
);
141 extern int ipv6_dev_mc_inc(struct net_device
*dev
, const struct in6_addr
*addr
);
142 extern int __ipv6_dev_mc_dec(struct inet6_dev
*idev
, const struct in6_addr
*addr
);
143 extern int ipv6_dev_mc_dec(struct net_device
*dev
, const struct in6_addr
*addr
);
144 extern void ipv6_mc_up(struct inet6_dev
*idev
);
145 extern void ipv6_mc_down(struct inet6_dev
*idev
);
146 extern void ipv6_mc_init_dev(struct inet6_dev
*idev
);
147 extern void ipv6_mc_destroy_dev(struct inet6_dev
*idev
);
148 extern void addrconf_dad_failure(struct inet6_ifaddr
*ifp
);
150 extern int ipv6_chk_mcast_addr(struct net_device
*dev
,
151 const struct in6_addr
*group
,
152 const struct in6_addr
*src_addr
);
153 extern int ipv6_is_mld(struct sk_buff
*skb
, int nexthdr
);
155 extern void addrconf_prefix_rcv(struct net_device
*dev
, u8
*opt
, int len
);
158 * anycast prototypes (anycast.c)
160 extern int ipv6_sock_ac_join(struct sock
*sk
,int ifindex
,struct in6_addr
*addr
);
161 extern int ipv6_sock_ac_drop(struct sock
*sk
,int ifindex
,struct in6_addr
*addr
);
162 extern void ipv6_sock_ac_close(struct sock
*sk
);
163 extern int inet6_ac_check(struct sock
*sk
, struct in6_addr
*addr
, int ifindex
);
165 extern int ipv6_dev_ac_inc(struct net_device
*dev
, struct in6_addr
*addr
);
166 extern int __ipv6_dev_ac_dec(struct inet6_dev
*idev
, struct in6_addr
*addr
);
167 extern int ipv6_chk_acast_addr(struct net
*net
, struct net_device
*dev
,
168 struct in6_addr
*addr
);
171 /* Device notifier */
172 extern int register_inet6addr_notifier(struct notifier_block
*nb
);
173 extern int unregister_inet6addr_notifier(struct notifier_block
*nb
);
175 static inline struct inet6_dev
*
176 __in6_dev_get(struct net_device
*dev
)
178 return rcu_dereference(dev
->ip6_ptr
);
181 static inline struct inet6_dev
*
182 in6_dev_get(struct net_device
*dev
)
184 struct inet6_dev
*idev
= NULL
;
186 idev
= __in6_dev_get(dev
);
188 atomic_inc(&idev
->refcnt
);
193 extern void in6_dev_finish_destroy(struct inet6_dev
*idev
);
196 in6_dev_put(struct inet6_dev
*idev
)
198 if (atomic_dec_and_test(&idev
->refcnt
))
199 in6_dev_finish_destroy(idev
);
202 #define __in6_dev_put(idev) atomic_dec(&(idev)->refcnt)
203 #define in6_dev_hold(idev) atomic_inc(&(idev)->refcnt)
206 extern void inet6_ifa_finish_destroy(struct inet6_ifaddr
*ifp
);
208 static inline void in6_ifa_put(struct inet6_ifaddr
*ifp
)
210 if (atomic_dec_and_test(&ifp
->refcnt
))
211 inet6_ifa_finish_destroy(ifp
);
214 #define __in6_ifa_put(ifp) atomic_dec(&(ifp)->refcnt)
215 #define in6_ifa_hold(ifp) atomic_inc(&(ifp)->refcnt)
220 * compute link-local solicited-node multicast address
223 static inline void addrconf_addr_solict_mult(const struct in6_addr
*addr
,
224 struct in6_addr
*solicited
)
226 ipv6_addr_set(solicited
,
227 htonl(0xFF020000), 0,
229 htonl(0xFF000000) | addr
->s6_addr32
[3]);
232 static inline int ipv6_addr_is_multicast(const struct in6_addr
*addr
)
234 return (addr
->s6_addr32
[0] & htonl(0xFF000000)) == htonl(0xFF000000);
237 static inline int ipv6_addr_is_ll_all_nodes(const struct in6_addr
*addr
)
239 return (((addr
->s6_addr32
[0] ^ htonl(0xff020000)) |
240 addr
->s6_addr32
[1] | addr
->s6_addr32
[2] |
241 (addr
->s6_addr32
[3] ^ htonl(0x00000001))) == 0);
244 static inline int ipv6_addr_is_ll_all_routers(const struct in6_addr
*addr
)
246 return (((addr
->s6_addr32
[0] ^ htonl(0xff020000)) |
247 addr
->s6_addr32
[1] | addr
->s6_addr32
[2] |
248 (addr
->s6_addr32
[3] ^ htonl(0x00000002))) == 0);
251 extern int __ipv6_isatap_ifid(u8
*eui
, __be32 addr
);
253 static inline int ipv6_addr_is_isatap(const struct in6_addr
*addr
)
255 return ((addr
->s6_addr32
[2] | htonl(0x02000000)) == htonl(0x02005EFE));
258 #ifdef CONFIG_PROC_FS
259 extern int if6_proc_init(void);
260 extern void if6_proc_exit(void);