Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Patrick McHardy | 6a800d4 | 2005-05-03 22:17:18 -0700 | [diff] [blame] | 20 | #include <linux/in6.h> |
| 21 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | struct prefix_info { |
| 23 | __u8 type; |
| 24 | __u8 length; |
| 25 | __u8 prefix_len; |
| 26 | |
| 27 | #if defined(__BIG_ENDIAN_BITFIELD) |
| 28 | __u8 onlink : 1, |
| 29 | autoconf : 1, |
| 30 | reserved : 6; |
| 31 | #elif defined(__LITTLE_ENDIAN_BITFIELD) |
| 32 | __u8 reserved : 6, |
| 33 | autoconf : 1, |
| 34 | onlink : 1; |
| 35 | #else |
| 36 | #error "Please fix <asm/byteorder.h>" |
| 37 | #endif |
Al Viro | e69a4ad | 2006-11-14 20:56:00 -0800 | [diff] [blame] | 38 | __be32 valid; |
| 39 | __be32 prefered; |
| 40 | __be32 reserved2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | |
| 42 | struct in6_addr prefix; |
| 43 | }; |
| 44 | |
| 45 | |
| 46 | #ifdef __KERNEL__ |
| 47 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | #include <linux/netdevice.h> |
| 49 | #include <net/if_inet6.h> |
Herbert Xu | e4553ed | 2005-05-03 14:25:13 -0700 | [diff] [blame] | 50 | #include <net/ipv6.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | |
| 52 | #define IN6_ADDR_HSIZE 16 |
| 53 | |
| 54 | extern int addrconf_init(void); |
| 55 | extern void addrconf_cleanup(void); |
| 56 | |
| 57 | extern int addrconf_add_ifaddr(void __user *arg); |
| 58 | extern int addrconf_del_ifaddr(void __user *arg); |
| 59 | extern int addrconf_set_dstaddr(void __user *arg); |
| 60 | |
| 61 | extern int ipv6_chk_addr(struct in6_addr *addr, |
| 62 | struct net_device *dev, |
| 63 | int strict); |
Masahide NAKAMURA | 59fbb3a | 2007-06-26 23:56:32 -0700 | [diff] [blame] | 64 | #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE) |
Noriaki TAKAMIYA | 3b9f9a1 | 2006-09-22 14:45:56 -0700 | [diff] [blame] | 65 | extern int ipv6_chk_home_addr(struct in6_addr *addr); |
Masahide NAKAMURA | 65d4ed9 | 2006-08-23 19:16:22 -0700 | [diff] [blame] | 66 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | extern struct inet6_ifaddr * ipv6_get_ifaddr(struct in6_addr *addr, |
| 68 | struct net_device *dev, |
| 69 | int strict); |
| 70 | extern int ipv6_get_saddr(struct dst_entry *dst, |
| 71 | struct in6_addr *daddr, |
| 72 | struct in6_addr *saddr); |
| 73 | extern int ipv6_dev_get_saddr(struct net_device *dev, |
| 74 | struct in6_addr *daddr, |
| 75 | struct in6_addr *saddr); |
Neil Horman | 95c385b | 2007-04-25 17:08:10 -0700 | [diff] [blame] | 76 | extern int ipv6_get_lladdr(struct net_device *dev, |
| 77 | struct in6_addr *addr, |
| 78 | unsigned char banned_flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | extern int ipv6_rcv_saddr_equal(const struct sock *sk, |
| 80 | const struct sock *sk2); |
| 81 | extern void addrconf_join_solict(struct net_device *dev, |
| 82 | struct in6_addr *addr); |
| 83 | extern void addrconf_leave_solict(struct inet6_dev *idev, |
| 84 | struct in6_addr *addr); |
| 85 | |
| 86 | /* |
| 87 | * multicast prototypes (mcast.c) |
| 88 | */ |
| 89 | extern int ipv6_sock_mc_join(struct sock *sk, int ifindex, |
| 90 | struct in6_addr *addr); |
| 91 | extern int ipv6_sock_mc_drop(struct sock *sk, int ifindex, |
| 92 | struct in6_addr *addr); |
| 93 | extern void ipv6_sock_mc_close(struct sock *sk); |
| 94 | extern int inet6_mc_check(struct sock *sk, struct in6_addr *mc_addr, |
| 95 | struct in6_addr *src_addr); |
| 96 | |
| 97 | extern int ipv6_dev_mc_inc(struct net_device *dev, struct in6_addr *addr); |
| 98 | extern int __ipv6_dev_mc_dec(struct inet6_dev *idev, struct in6_addr *addr); |
| 99 | extern int ipv6_dev_mc_dec(struct net_device *dev, struct in6_addr *addr); |
| 100 | extern void ipv6_mc_up(struct inet6_dev *idev); |
| 101 | extern void ipv6_mc_down(struct inet6_dev *idev); |
| 102 | extern void ipv6_mc_init_dev(struct inet6_dev *idev); |
| 103 | extern void ipv6_mc_destroy_dev(struct inet6_dev *idev); |
| 104 | extern void addrconf_dad_failure(struct inet6_ifaddr *ifp); |
| 105 | |
| 106 | extern int ipv6_chk_mcast_addr(struct net_device *dev, struct in6_addr *group, |
| 107 | struct in6_addr *src_addr); |
| 108 | extern int ipv6_is_mld(struct sk_buff *skb, int nexthdr); |
| 109 | |
| 110 | extern void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len); |
| 111 | |
| 112 | extern int ipv6_get_hoplimit(struct net_device *dev); |
| 113 | |
| 114 | /* |
| 115 | * anycast prototypes (anycast.c) |
| 116 | */ |
| 117 | extern int ipv6_sock_ac_join(struct sock *sk,int ifindex,struct in6_addr *addr); |
| 118 | extern int ipv6_sock_ac_drop(struct sock *sk,int ifindex,struct in6_addr *addr); |
| 119 | extern void ipv6_sock_ac_close(struct sock *sk); |
| 120 | extern int inet6_ac_check(struct sock *sk, struct in6_addr *addr, int ifindex); |
| 121 | |
| 122 | extern int ipv6_dev_ac_inc(struct net_device *dev, struct in6_addr *addr); |
| 123 | extern int __ipv6_dev_ac_dec(struct inet6_dev *idev, struct in6_addr *addr); |
| 124 | extern int ipv6_chk_acast_addr(struct net_device *dev, struct in6_addr *addr); |
| 125 | |
| 126 | |
| 127 | /* Device notifier */ |
| 128 | extern int register_inet6addr_notifier(struct notifier_block *nb); |
| 129 | extern int unregister_inet6addr_notifier(struct notifier_block *nb); |
| 130 | |
| 131 | static inline struct inet6_dev * |
| 132 | __in6_dev_get(struct net_device *dev) |
| 133 | { |
YOSHIFUJI Hideaki | 8814c4b | 2006-09-22 14:44:24 -0700 | [diff] [blame] | 134 | return rcu_dereference(dev->ip6_ptr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | } |
| 136 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | static inline struct inet6_dev * |
| 138 | in6_dev_get(struct net_device *dev) |
| 139 | { |
| 140 | struct inet6_dev *idev = NULL; |
YOSHIFUJI Hideaki | 8814c4b | 2006-09-22 14:44:24 -0700 | [diff] [blame] | 141 | rcu_read_lock(); |
| 142 | idev = __in6_dev_get(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | if (idev) |
| 144 | atomic_inc(&idev->refcnt); |
YOSHIFUJI Hideaki | 8814c4b | 2006-09-22 14:44:24 -0700 | [diff] [blame] | 145 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 146 | return idev; |
| 147 | } |
| 148 | |
| 149 | extern void in6_dev_finish_destroy(struct inet6_dev *idev); |
| 150 | |
| 151 | static inline void |
| 152 | in6_dev_put(struct inet6_dev *idev) |
| 153 | { |
| 154 | if (atomic_dec_and_test(&idev->refcnt)) |
| 155 | in6_dev_finish_destroy(idev); |
| 156 | } |
| 157 | |
| 158 | #define __in6_dev_put(idev) atomic_dec(&(idev)->refcnt) |
| 159 | #define in6_dev_hold(idev) atomic_inc(&(idev)->refcnt) |
| 160 | |
| 161 | |
| 162 | extern void inet6_ifa_finish_destroy(struct inet6_ifaddr *ifp); |
| 163 | |
| 164 | static inline void in6_ifa_put(struct inet6_ifaddr *ifp) |
| 165 | { |
| 166 | if (atomic_dec_and_test(&ifp->refcnt)) |
| 167 | inet6_ifa_finish_destroy(ifp); |
| 168 | } |
| 169 | |
| 170 | #define __in6_ifa_put(ifp) atomic_dec(&(ifp)->refcnt) |
| 171 | #define in6_ifa_hold(ifp) atomic_inc(&(ifp)->refcnt) |
| 172 | |
| 173 | |
| 174 | extern void addrconf_forwarding_on(void); |
| 175 | /* |
| 176 | * Hash function taken from net_alias.c |
| 177 | */ |
| 178 | |
| 179 | static __inline__ u8 ipv6_addr_hash(const struct in6_addr *addr) |
| 180 | { |
| 181 | __u32 word; |
| 182 | |
| 183 | /* |
| 184 | * We perform the hash function over the last 64 bits of the address |
| 185 | * This will include the IEEE address token on links that support it. |
| 186 | */ |
| 187 | |
Al Viro | e69a4ad | 2006-11-14 20:56:00 -0800 | [diff] [blame] | 188 | word = (__force u32)(addr->s6_addr32[2] ^ addr->s6_addr32[3]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | word ^= (word >> 16); |
| 190 | word ^= (word >> 8); |
| 191 | |
| 192 | return ((word ^ (word >> 4)) & 0x0f); |
| 193 | } |
| 194 | |
| 195 | /* |
| 196 | * compute link-local solicited-node multicast address |
| 197 | */ |
| 198 | |
| 199 | static inline void addrconf_addr_solict_mult(const struct in6_addr *addr, |
| 200 | struct in6_addr *solicited) |
| 201 | { |
| 202 | ipv6_addr_set(solicited, |
| 203 | __constant_htonl(0xFF020000), 0, |
| 204 | __constant_htonl(0x1), |
| 205 | __constant_htonl(0xFF000000) | addr->s6_addr32[3]); |
| 206 | } |
| 207 | |
| 208 | |
| 209 | static inline void ipv6_addr_all_nodes(struct in6_addr *addr) |
| 210 | { |
| 211 | ipv6_addr_set(addr, |
| 212 | __constant_htonl(0xFF020000), 0, 0, |
| 213 | __constant_htonl(0x1)); |
| 214 | } |
| 215 | |
| 216 | static inline void ipv6_addr_all_routers(struct in6_addr *addr) |
| 217 | { |
| 218 | ipv6_addr_set(addr, |
| 219 | __constant_htonl(0xFF020000), 0, 0, |
| 220 | __constant_htonl(0x2)); |
| 221 | } |
| 222 | |
| 223 | static inline int ipv6_addr_is_multicast(const struct in6_addr *addr) |
| 224 | { |
| 225 | return (addr->s6_addr32[0] & __constant_htonl(0xFF000000)) == __constant_htonl(0xFF000000); |
| 226 | } |
| 227 | |
| 228 | static inline int ipv6_addr_is_ll_all_nodes(const struct in6_addr *addr) |
| 229 | { |
| 230 | return (addr->s6_addr32[0] == htonl(0xff020000) && |
| 231 | addr->s6_addr32[1] == 0 && |
| 232 | addr->s6_addr32[2] == 0 && |
| 233 | addr->s6_addr32[3] == htonl(0x00000001)); |
| 234 | } |
| 235 | |
| 236 | static inline int ipv6_addr_is_ll_all_routers(const struct in6_addr *addr) |
| 237 | { |
| 238 | return (addr->s6_addr32[0] == htonl(0xff020000) && |
| 239 | addr->s6_addr32[1] == 0 && |
| 240 | addr->s6_addr32[2] == 0 && |
| 241 | addr->s6_addr32[3] == htonl(0x00000002)); |
| 242 | } |
| 243 | |
Arnaldo Carvalho de Melo | 2038073 | 2005-08-16 02:18:02 -0300 | [diff] [blame] | 244 | #ifdef CONFIG_PROC_FS |
| 245 | extern int if6_proc_init(void); |
| 246 | extern void if6_proc_exit(void); |
| 247 | #endif |
| 248 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | #endif |
| 250 | #endif |