addrconf.h
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:5k
- #ifndef _ADDRCONF_H
- #define _ADDRCONF_H
- #define RETRANS_TIMER HZ
- #define MAX_RTR_SOLICITATIONS 3
- #define RTR_SOLICITATION_INTERVAL (4*HZ)
- #define ADDR_CHECK_FREQUENCY (120*HZ)
- 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
- __u32 valid;
- __u32 prefered;
- __u32 reserved2;
- struct in6_addr prefix;
- };
- #ifdef __KERNEL__
- #include <linux/in6.h>
- #include <linux/netdevice.h>
- #include <net/if_inet6.h>
- #define IN6_ADDR_HSIZE 16
- extern void addrconf_init(void);
- extern void addrconf_cleanup(void);
- extern int addrconf_notify(struct notifier_block *this,
- unsigned long event,
- void * data);
- extern int addrconf_add_ifaddr(void *arg);
- extern int addrconf_del_ifaddr(void *arg);
- extern int addrconf_set_dstaddr(void *arg);
- extern int ipv6_chk_addr(struct in6_addr *addr,
- struct net_device *dev);
- extern struct inet6_ifaddr * ipv6_get_ifaddr(struct in6_addr *addr,
- struct net_device *dev);
- extern int ipv6_get_saddr(struct dst_entry *dst,
- struct in6_addr *daddr,
- struct in6_addr *saddr);
- extern int ipv6_get_lladdr(struct net_device *dev, struct in6_addr *);
- /*
- * multicast prototypes (mcast.c)
- */
- extern int ipv6_sock_mc_join(struct sock *sk,
- int ifindex,
- struct in6_addr *addr);
- extern int ipv6_sock_mc_drop(struct sock *sk,
- int ifindex,
- struct in6_addr *addr);
- extern void ipv6_sock_mc_close(struct sock *sk);
- extern int inet6_mc_check(struct sock *sk, struct in6_addr *addr);
- extern int ipv6_dev_mc_inc(struct net_device *dev,
- struct in6_addr *addr);
- extern int ipv6_dev_mc_dec(struct net_device *dev,
- 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_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,
- struct in6_addr *addr);
- extern void addrconf_prefix_rcv(struct net_device *dev,
- u8 *opt, int len);
- /* 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 (struct inet6_dev *)dev->ip6_ptr;
- }
- extern rwlock_t addrconf_lock;
- static inline struct inet6_dev *
- in6_dev_get(struct net_device *dev)
- {
- struct inet6_dev *idev = NULL;
- read_lock(&addrconf_lock);
- idev = dev->ip6_ptr;
- if (idev)
- atomic_inc(&idev->refcnt);
- read_unlock(&addrconf_lock);
- 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(idev) atomic_dec(&(idev)->refcnt)
- #define in6_ifa_hold(idev) atomic_inc(&(idev)->refcnt)
- extern void addrconf_forwarding_on(void);
- /*
- * Hash function taken from net_alias.c
- */
- static __inline__ u8 ipv6_addr_hash(struct in6_addr *addr)
- {
- __u32 word;
- /*
- * We perform the hash function over the last 64 bits of the address
- * This will include the IEEE address token on links that support it.
- */
- word = addr->s6_addr[2] ^ addr->s6_addr32[3];
- word ^= (word>>16);
- word ^= (word >> 8);
- return ((word ^ (word >> 4)) & 0x0f);
- }
- /*
- * compute link-local solicited-node multicast address
- */
- static inline void addrconf_addr_solict_mult(struct in6_addr *addr,
- struct in6_addr *solicited)
- {
- ipv6_addr_set(solicited,
- __constant_htonl(0xFF020000), 0,
- __constant_htonl(0x1),
- __constant_htonl(0xFF000000) | addr->s6_addr32[3]);
- }
- static inline void ipv6_addr_all_nodes(struct in6_addr *addr)
- {
- ipv6_addr_set(addr,
- __constant_htonl(0xFF020000), 0, 0,
- __constant_htonl(0x1));
- }
- static inline void ipv6_addr_all_routers(struct in6_addr *addr)
- {
- ipv6_addr_set(addr,
- __constant_htonl(0xFF020000), 0, 0,
- __constant_htonl(0x2));
- }
- static inline int ipv6_addr_is_multicast(struct in6_addr *addr)
- {
- return (addr->s6_addr32[0] & __constant_htonl(0xFF000000)) == __constant_htonl(0xFF000000);
- }
- #endif
- #endif