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linux/include/net/addrconf.h
Noriaki TAKAMIYA 3b9f9a1c39 [IPV6] ADDRCONF: Mobile IPv6 Home Address support. 
IFA_F_HOMEADDRESS is introduced for Mobile IPv6 Home Addresses on
Mobile Node.

The IFA_F_HOMEADDRESS flag should be set for Mobile IPv6 Home
Addresses for 2 purposes. 1) We need to check this on receipt of
Type 2 Routing Header (RFC3775 Secion 6.4), 2) We prefer Home
Address(es) in source address selection (RFC3484 Section 5 Rule 4).

Signed-off-by: Noriaki TAKAMIYA <takamiya@po.ntts.co.jp>
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-09-22 15:20:29 -07:00

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6.7 KiB
C
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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 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/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
__u32 valid;
__u32 prefered;
__u32 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(void __user *arg);
extern int addrconf_del_ifaddr(void __user *arg);
extern int addrconf_set_dstaddr(void __user *arg);
extern int ipv6_chk_addr(struct in6_addr *addr,
struct net_device *dev,
int strict);
#ifdef CONFIG_IPV6_MIP6
extern int ipv6_chk_home_addr(struct in6_addr *addr);
#endif
extern struct inet6_ifaddr * ipv6_get_ifaddr(struct in6_addr *addr,
struct net_device *dev,
int strict);
extern int ipv6_get_saddr(struct dst_entry *dst,
struct in6_addr *daddr,
struct in6_addr *saddr);
extern int ipv6_dev_get_saddr(struct net_device *dev,
struct in6_addr *daddr,
struct in6_addr *saddr);
extern int ipv6_get_lladdr(struct net_device *dev, struct in6_addr *);
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);
/*
* 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 *mc_addr,
struct in6_addr *src_addr);
extern int ipv6_dev_mc_inc(struct net_device *dev, struct in6_addr *addr);
extern int __ipv6_dev_mc_dec(struct inet6_dev *idev, 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 *group,
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);
extern int ipv6_get_hoplimit(struct net_device *dev);
/*
* 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_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(dev->ip6_ptr);
}
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)
extern void addrconf_forwarding_on(void);
/*
* Hash function taken from net_alias.c
*/
static __inline__ u8 ipv6_addr_hash(const 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_addr32[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(const 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(const struct in6_addr *addr)
{
return (addr->s6_addr32[0] & __constant_htonl(0xFF000000)) == __constant_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] == 0 &&
addr->s6_addr32[2] == 0 &&
addr->s6_addr32[3] == htonl(0x00000001));
}
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] == 0 &&
addr->s6_addr32[2] == 0 &&
addr->s6_addr32[3] == htonl(0x00000002));
}
#ifdef CONFIG_PROC_FS
extern int if6_proc_init(void);
extern void if6_proc_exit(void);
#endif
#endif
#endif
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