[net-next-2.6.git] / include / net / addrconf.h

#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_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);

/*
 *	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(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_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(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)


/*
 *	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
Commit	Line	Data
1da177e4 LT	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 (23600) / 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
c7dc89c0	20	#include <linux/in.h>
6a800d45 PM	21	#include <linux/in6.h>
6a800d45 PM	22
1da177e4 LT	23	struct prefix_info {
	24	__u8 type;
	25	__u8 length;
	26	__u8 prefix_len;
	27
	28	#if defined(__BIG_ENDIAN_BITFIELD)
	29	__u8 onlink : 1,
	30	autoconf : 1,
	31	reserved : 6;
	32	#elif defined(__LITTLE_ENDIAN_BITFIELD)
	33	__u8 reserved : 6,
	34	autoconf : 1,
	35	onlink : 1;
	36	#else
	37	#error "Please fix <asm/byteorder.h>"
	38	#endif
e69a4adc AV	39	__be32 valid;
	40	__be32 prefered;
	41	__be32 reserved2;
1da177e4 LT	42
	43	struct in6_addr prefix;
	44	};
	45
	46
	47	#ifdef __KERNEL__
	48
1da177e4 LT	49	#include <linux/netdevice.h>
1da177e4 LT	50	#include <net/if_inet6.h>
e4553edd	51	#include <net/ipv6.h>
1da177e4 LT	52
	53	#define IN6_ADDR_HSIZE 16
	54
	55	extern int addrconf_init(void);
	56	extern void addrconf_cleanup(void);
	57
af284937 DL	58	extern int addrconf_add_ifaddr(struct net *net,
	59	void __user *arg);
	60	extern int addrconf_del_ifaddr(struct net *net,
	61	void __user *arg);
	62	extern int addrconf_set_dstaddr(struct net *net,
	63	void __user *arg);
1da177e4	64
bfeade08 DL	65	extern int ipv6_chk_addr(struct net *net,
bfeade08 DL	66	struct in6_addr *addr,
1da177e4 LT	67	struct net_device *dev,
1da177e4 LT	68	int strict);
bfeade08	69
59fbb3a6	70	#if defined(CONFIG_IPV6_MIP6) \|\| defined(CONFIG_IPV6_MIP6_MODULE)
389f6612 DL	71	extern int ipv6_chk_home_addr(struct net *net,
389f6612 DL	72	struct in6_addr *addr);
65d4ed92	73	#endif
52eeeb84 YH	74
	75	extern int ipv6_chk_prefix(struct in6_addr *addr,
	76	struct net_device *dev);
	77
1cab3da6	78	extern struct inet6_ifaddr ipv6_get_ifaddr(struct net net,
9acd9f3a	79	const struct in6_addr *addr,
1cab3da6 DL	80	struct net_device *dev,
	81	int strict);
	82
1da177e4	83	extern int ipv6_dev_get_saddr(struct net_device *dev,
9acd9f3a	84	const struct in6_addr *daddr,
7cbca67c	85	unsigned int srcprefs,
1da177e4	86	struct in6_addr *saddr);
95c385b4 NH	87	extern int ipv6_get_lladdr(struct net_device *dev,
	88	struct in6_addr *addr,
	89	unsigned char banned_flags);
1da177e4 LT	90	extern int ipv6_rcv_saddr_equal(const struct sock *sk,
	91	const struct sock *sk2);
	92	extern void addrconf_join_solict(struct net_device *dev,
	93	struct in6_addr *addr);
	94	extern void addrconf_leave_solict(struct inet6_dev *idev,
	95	struct in6_addr *addr);
	96
2a8cc6c8 YH	97	/*
	98	* IPv6 Address Label subsystem (addrlabel.c)
	99	*/
	100	extern int ipv6_addr_label_init(void);
	101	extern void ipv6_addr_label_rtnl_register(void);
	102	extern u32 ipv6_addr_label(const struct in6_addr *addr,
	103	int type, int ifindex);
	104
1da177e4 LT	105	/*
	106	* multicast prototypes (mcast.c)
	107	*/
9acd9f3a YH	108	extern int ipv6_sock_mc_join(struct sock *sk, int ifindex,
	109	const struct in6_addr *addr);
	110	extern int ipv6_sock_mc_drop(struct sock *sk, int ifindex,
	111	const struct in6_addr *addr);
1da177e4	112	extern void ipv6_sock_mc_close(struct sock *sk);
9acd9f3a YH	113	extern int inet6_mc_check(struct sock *sk,
	114	const struct in6_addr *mc_addr,
	115	const struct in6_addr *src_addr);
1da177e4	116
9acd9f3a YH	117	extern int ipv6_dev_mc_inc(struct net_device dev, const struct in6_addr addr);
	118	extern int __ipv6_dev_mc_dec(struct inet6_dev idev, const struct in6_addr addr);
	119	extern int ipv6_dev_mc_dec(struct net_device dev, const struct in6_addr addr);
1da177e4 LT	120	extern void ipv6_mc_up(struct inet6_dev *idev);
	121	extern void ipv6_mc_down(struct inet6_dev *idev);
	122	extern void ipv6_mc_init_dev(struct inet6_dev *idev);
	123	extern void ipv6_mc_destroy_dev(struct inet6_dev *idev);
	124	extern void addrconf_dad_failure(struct inet6_ifaddr *ifp);
	125
9acd9f3a YH	126	extern int ipv6_chk_mcast_addr(struct net_device *dev,
	127	const struct in6_addr *group,
	128	const struct in6_addr *src_addr);
1da177e4 LT	129	extern int ipv6_is_mld(struct sk_buff *skb, int nexthdr);
	130
	131	extern void addrconf_prefix_rcv(struct net_device dev, u8 opt, int len);
	132
1da177e4 LT	133	/*
	134	* anycast prototypes (anycast.c)
	135	*/
	136	extern int ipv6_sock_ac_join(struct sock sk,int ifindex,struct in6_addr addr);
	137	extern int ipv6_sock_ac_drop(struct sock sk,int ifindex,struct in6_addr addr);
	138	extern void ipv6_sock_ac_close(struct sock *sk);
	139	extern int inet6_ac_check(struct sock sk, struct in6_addr addr, int ifindex);
	140
	141	extern int ipv6_dev_ac_inc(struct net_device dev, struct in6_addr addr);
	142	extern int __ipv6_dev_ac_dec(struct inet6_dev idev, struct in6_addr addr);
6ab57e7e DL	143	extern int ipv6_chk_acast_addr(struct net net, struct net_device dev,
6ab57e7e DL	144	struct in6_addr *addr);
1da177e4 LT	145
	146
	147	/* Device notifier */
	148	extern int register_inet6addr_notifier(struct notifier_block *nb);
	149	extern int unregister_inet6addr_notifier(struct notifier_block *nb);
	150
	151	static inline struct inet6_dev *
	152	__in6_dev_get(struct net_device *dev)
	153	{
8814c4b5	154	return rcu_dereference(dev->ip6_ptr);
1da177e4 LT	155	}
1da177e4 LT	156
1da177e4 LT	157	static inline struct inet6_dev *
	158	in6_dev_get(struct net_device *dev)
	159	{
	160	struct inet6_dev *idev = NULL;
8814c4b5 YH	161	rcu_read_lock();
8814c4b5 YH	162	idev = __in6_dev_get(dev);
1da177e4 LT	163	if (idev)
1da177e4 LT	164	atomic_inc(&idev->refcnt);
8814c4b5	165	rcu_read_unlock();
1da177e4 LT	166	return idev;
	167	}
	168
	169	extern void in6_dev_finish_destroy(struct inet6_dev *idev);
	170
	171	static inline void
	172	in6_dev_put(struct inet6_dev *idev)
	173	{
	174	if (atomic_dec_and_test(&idev->refcnt))
	175	in6_dev_finish_destroy(idev);
	176	}
	177
	178	#define __in6_dev_put(idev) atomic_dec(&(idev)->refcnt)
	179	#define in6_dev_hold(idev) atomic_inc(&(idev)->refcnt)
	180
	181
	182	extern void inet6_ifa_finish_destroy(struct inet6_ifaddr *ifp);
	183
	184	static inline void in6_ifa_put(struct inet6_ifaddr *ifp)
	185	{
	186	if (atomic_dec_and_test(&ifp->refcnt))
	187	inet6_ifa_finish_destroy(ifp);
	188	}
	189
	190	#define __in6_ifa_put(ifp) atomic_dec(&(ifp)->refcnt)
	191	#define in6_ifa_hold(ifp) atomic_inc(&(ifp)->refcnt)
	192
	193
1da177e4 LT	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,
0e7b8dcd YH	203	htonl(0xFF020000), 0,
	204	htonl(0x1),
	205	htonl(0xFF000000) \| addr->s6_addr32[3]);
1da177e4 LT	206	}
1da177e4 LT	207
1da177e4 LT	208	static inline int ipv6_addr_is_multicast(const struct in6_addr *addr)
1da177e4 LT	209	{
0e7b8dcd	210	return (addr->s6_addr32[0] & htonl(0xFF000000)) == htonl(0xFF000000);
1da177e4 LT	211	}
	212
	213	static inline int ipv6_addr_is_ll_all_nodes(const struct in6_addr *addr)
	214	{
fed85383 YH	215	return (((addr->s6_addr32[0] ^ htonl(0xff020000)) \|
	216	addr->s6_addr32[1] \| addr->s6_addr32[2] \|
	217	(addr->s6_addr32[3] ^ htonl(0x00000001))) == 0);
1da177e4 LT	218	}
	219
	220	static inline int ipv6_addr_is_ll_all_routers(const struct in6_addr *addr)
	221	{
fed85383 YH	222	return (((addr->s6_addr32[0] ^ htonl(0xff020000)) \|
	223	addr->s6_addr32[1] \| addr->s6_addr32[2] \|
	224	(addr->s6_addr32[3] ^ htonl(0x00000002))) == 0);
1da177e4 LT	225	}
1da177e4 LT	226
dfd982ba	227	extern int __ipv6_isatap_ifid(u8 *eui, __be32 addr);
c7dc89c0 FT	228
	229	static inline int ipv6_addr_is_isatap(const struct in6_addr *addr)
	230	{
	231	return ((addr->s6_addr32[2] \| htonl(0x02000000)) == htonl(0x02005EFE));
	232	}
	233
20380731 ACM	234	#ifdef CONFIG_PROC_FS
	235	extern int if6_proc_init(void);
	236	extern void if6_proc_exit(void);
	237	#endif
	238
1da177e4 LT	239	#endif
1da177e4 LT	240	#endif