| #ifndef _ADDRCONF_H |
| #define _ADDRCONF_H |
| |
| #define RETRANS_TIMER HZ |
| |
| #define MAX_RTR_SOLICITATIONS 3 |
| #define RTR_SOLICITATION_INTERVAL (4*HZ) |
| |
| #define MIN_VALID_LIFETIME (2*3600) /* 2 hours */ |
| |
| #define TEMP_VALID_LIFETIME (7*86400) |
| #define TEMP_PREFERRED_LIFETIME (86400) |
| #define REGEN_MAX_RETRY (5) |
| #define MAX_DESYNC_FACTOR (600) |
| |
| #define ADDR_CHECK_FREQUENCY (120*HZ) |
| |
| #define IPV6_MAX_ADDRESSES 16 |
| |
| #include <linux/in.h> |
| #include <linux/in6.h> |
| |
| struct prefix_info { |
| __u8 type; |
| __u8 length; |
| __u8 prefix_len; |
| |
| #if defined(__BIG_ENDIAN_BITFIELD) |
| __u8 onlink : 1, |
| autoconf : 1, |
| reserved : 6; |
| #elif defined(__LITTLE_ENDIAN_BITFIELD) |
| __u8 reserved : 6, |
| autoconf : 1, |
| onlink : 1; |
| #else |
| #error "Please fix <asm/byteorder.h>" |
| #endif |
| __be32 valid; |
| __be32 prefered; |
| __be32 reserved2; |
| |
| struct in6_addr prefix; |
| }; |
| |
| |
| #ifdef __KERNEL__ |
| |
| #include <linux/netdevice.h> |
| #include <net/if_inet6.h> |
| #include <net/ipv6.h> |
| |
| #define IN6_ADDR_HSIZE 16 |
| |
| extern int addrconf_init(void); |
| extern void addrconf_cleanup(void); |
| |
| extern int addrconf_add_ifaddr(struct net *net, |
| void __user *arg); |
| extern int addrconf_del_ifaddr(struct net *net, |
| void __user *arg); |
| extern int addrconf_set_dstaddr(struct net *net, |
| void __user *arg); |
| |
| extern int ipv6_chk_addr(struct net *net, |
| struct in6_addr *addr, |
| struct net_device *dev, |
| int strict); |
| |
| #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE) |
| extern int ipv6_chk_home_addr(struct net *net, |
| struct in6_addr *addr); |
| #endif |
| |
| extern int ipv6_chk_prefix(struct in6_addr *addr, |
| struct net_device *dev); |
| |
| extern struct inet6_ifaddr *ipv6_get_ifaddr(struct net *net, |
| const struct in6_addr *addr, |
| struct net_device *dev, |
| int strict); |
| |
| extern int ipv6_dev_get_saddr(struct net *net, |
| struct net_device *dev, |
| const struct in6_addr *daddr, |
| unsigned int srcprefs, |
| struct in6_addr *saddr); |
| extern int ipv6_get_lladdr(struct net_device *dev, |
| struct in6_addr *addr, |
| unsigned char banned_flags); |
| extern int ipv6_rcv_saddr_equal(const struct sock *sk, |
| const struct sock *sk2); |
| extern void addrconf_join_solict(struct net_device *dev, |
| struct in6_addr *addr); |
| extern void addrconf_leave_solict(struct inet6_dev *idev, |
| struct in6_addr *addr); |
| |
| static inline unsigned long addrconf_timeout_fixup(u32 timeout, |
| unsigned unit) |
| { |
| if (timeout == 0xffffffff) |
| return ~0UL; |
| |
| /* |
| * Avoid arithmetic overflow. |
| * Assuming unit is constant and non-zero, this "if" statement |
| * will go away on 64bit archs. |
| */ |
| if (0xfffffffe > LONG_MAX / unit && timeout > LONG_MAX / unit) |
| return LONG_MAX / unit; |
| |
| return timeout; |
| } |
| |
| static inline int addrconf_finite_timeout(unsigned long timeout) |
| { |
| return ~timeout; |
| } |
| |
| /* |
| * IPv6 Address Label subsystem (addrlabel.c) |
| */ |
| extern int ipv6_addr_label_init(void); |
| extern void ipv6_addr_label_rtnl_register(void); |
| extern u32 ipv6_addr_label(struct net *net, |
| const struct in6_addr *addr, |
| int type, int ifindex); |
| |
| /* |
| * multicast prototypes (mcast.c) |
| */ |
| extern int ipv6_sock_mc_join(struct sock *sk, int ifindex, |
| const struct in6_addr *addr); |
| extern int ipv6_sock_mc_drop(struct sock *sk, int ifindex, |
| const struct in6_addr *addr); |
| extern void ipv6_sock_mc_close(struct sock *sk); |
| extern int inet6_mc_check(struct sock *sk, |
| const struct in6_addr *mc_addr, |
| const struct in6_addr *src_addr); |
| |
| extern int ipv6_dev_mc_inc(struct net_device *dev, const struct in6_addr *addr); |
| extern int __ipv6_dev_mc_dec(struct inet6_dev *idev, const struct in6_addr *addr); |
| extern int ipv6_dev_mc_dec(struct net_device *dev, const struct in6_addr *addr); |
| extern void ipv6_mc_up(struct inet6_dev *idev); |
| extern void ipv6_mc_down(struct inet6_dev *idev); |
| extern void ipv6_mc_unmap(struct inet6_dev *idev); |
| extern void ipv6_mc_remap(struct inet6_dev *idev); |
| extern void ipv6_mc_init_dev(struct inet6_dev *idev); |
| extern void ipv6_mc_destroy_dev(struct inet6_dev *idev); |
| extern void addrconf_dad_failure(struct inet6_ifaddr *ifp); |
| |
| extern int ipv6_chk_mcast_addr(struct net_device *dev, |
| const struct in6_addr *group, |
| const struct in6_addr *src_addr); |
| extern int ipv6_is_mld(struct sk_buff *skb, int nexthdr); |
| |
| extern void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len); |
| |
| /* |
| * anycast prototypes (anycast.c) |
| */ |
| extern int ipv6_sock_ac_join(struct sock *sk,int ifindex,struct in6_addr *addr); |
| extern int ipv6_sock_ac_drop(struct sock *sk,int ifindex,struct in6_addr *addr); |
| extern void ipv6_sock_ac_close(struct sock *sk); |
| extern int inet6_ac_check(struct sock *sk, struct in6_addr *addr, int ifindex); |
| |
| extern int ipv6_dev_ac_inc(struct net_device *dev, struct in6_addr *addr); |
| extern int __ipv6_dev_ac_dec(struct inet6_dev *idev, struct in6_addr *addr); |
| extern int ipv6_chk_acast_addr(struct net *net, struct net_device *dev, |
| struct in6_addr *addr); |
| |
| |
| /* Device notifier */ |
| extern int register_inet6addr_notifier(struct notifier_block *nb); |
| extern int unregister_inet6addr_notifier(struct notifier_block *nb); |
| |
| static inline struct inet6_dev * |
| __in6_dev_get(struct net_device *dev) |
| { |
| return rcu_dereference_check(dev->ip6_ptr, |
| rcu_read_lock_held() || |
| lockdep_rtnl_is_held()); |
| } |
| |
| static inline struct inet6_dev * |
| in6_dev_get(struct net_device *dev) |
| { |
| struct inet6_dev *idev = NULL; |
| rcu_read_lock(); |
| idev = __in6_dev_get(dev); |
| if (idev) |
| atomic_inc(&idev->refcnt); |
| rcu_read_unlock(); |
| return idev; |
| } |
| |
| extern void in6_dev_finish_destroy(struct inet6_dev *idev); |
| |
| static inline void |
| in6_dev_put(struct inet6_dev *idev) |
| { |
| if (atomic_dec_and_test(&idev->refcnt)) |
| in6_dev_finish_destroy(idev); |
| } |
| |
| #define __in6_dev_put(idev) atomic_dec(&(idev)->refcnt) |
| #define in6_dev_hold(idev) atomic_inc(&(idev)->refcnt) |
| |
| |
| extern void inet6_ifa_finish_destroy(struct inet6_ifaddr *ifp); |
| |
| static inline void in6_ifa_put(struct inet6_ifaddr *ifp) |
| { |
| if (atomic_dec_and_test(&ifp->refcnt)) |
| inet6_ifa_finish_destroy(ifp); |
| } |
| |
| #define __in6_ifa_put(ifp) atomic_dec(&(ifp)->refcnt) |
| #define in6_ifa_hold(ifp) atomic_inc(&(ifp)->refcnt) |
| |
| |
| |
| /* |
| * compute link-local solicited-node multicast address |
| */ |
| |
| static inline void addrconf_addr_solict_mult(const struct in6_addr *addr, |
| struct in6_addr *solicited) |
| { |
| ipv6_addr_set(solicited, |
| htonl(0xFF020000), 0, |
| htonl(0x1), |
| htonl(0xFF000000) | addr->s6_addr32[3]); |
| } |
| |
| static inline int ipv6_addr_is_multicast(const struct in6_addr *addr) |
| { |
| return (addr->s6_addr32[0] & htonl(0xFF000000)) == htonl(0xFF000000); |
| } |
| |
| static inline int ipv6_addr_is_ll_all_nodes(const struct in6_addr *addr) |
| { |
| return (((addr->s6_addr32[0] ^ htonl(0xff020000)) | |
| addr->s6_addr32[1] | addr->s6_addr32[2] | |
| (addr->s6_addr32[3] ^ htonl(0x00000001))) == 0); |
| } |
| |
| static inline int ipv6_addr_is_ll_all_routers(const struct in6_addr *addr) |
| { |
| return (((addr->s6_addr32[0] ^ htonl(0xff020000)) | |
| addr->s6_addr32[1] | addr->s6_addr32[2] | |
| (addr->s6_addr32[3] ^ htonl(0x00000002))) == 0); |
| } |
| |
| extern int __ipv6_isatap_ifid(u8 *eui, __be32 addr); |
| |
| static inline int ipv6_addr_is_isatap(const struct in6_addr *addr) |
| { |
| return ((addr->s6_addr32[2] | htonl(0x02000000)) == htonl(0x02005EFE)); |
| } |
| |
| #ifdef CONFIG_PROC_FS |
| extern int if6_proc_init(void); |
| extern void if6_proc_exit(void); |
| #endif |
| |
| #endif |
| #endif |