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#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
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