[net-next-2.6.git] / include / net / if_inet6.h

/*
 *	inet6 interface/address list definitions
 *	Linux INET6 implementation 
 *
 *	Authors:
 *	Pedro Roque		<roque@di.fc.ul.pt>	
 *
 *
 *	This program is free software; you can redistribute it and/or
 *      modify it under the terms of the GNU General Public License
 *      as published by the Free Software Foundation; either version
 *      2 of the License, or (at your option) any later version.
 */

#ifndef _NET_IF_INET6_H
#define _NET_IF_INET6_H

#include <net/snmp.h>
#include <linux/ipv6.h>

/* inet6_dev.if_flags */

#define IF_RA_OTHERCONF	0x80
#define IF_RA_MANAGED	0x40
#define IF_RA_RCVD	0x20
#define IF_RS_SENT	0x10
#define IF_READY	0x80000000

/* prefix flags */
#define IF_PREFIX_ONLINK	0x01
#define IF_PREFIX_AUTOCONF	0x02

#ifdef __KERNEL__

enum {
	INET6_IFADDR_STATE_DAD,
	INET6_IFADDR_STATE_POSTDAD,
	INET6_IFADDR_STATE_UP,
	INET6_IFADDR_STATE_DEAD,
};

struct inet6_ifaddr {
	struct in6_addr		addr;
	__u32			prefix_len;
	
	__u32			valid_lft;
	__u32			prefered_lft;
	atomic_t		refcnt;
	spinlock_t		lock;
	spinlock_t		state_lock;

	int			state;

	__u8			probes;
	__u8			flags;

	__u16			scope;

	unsigned long		cstamp;	/* created timestamp */
	unsigned long		tstamp; /* updated timestamp */

	struct timer_list	timer;

	struct inet6_dev	*idev;
	struct rt6_info		*rt;

	struct hlist_node	addr_lst;
	struct list_head	if_list;

#ifdef CONFIG_IPV6_PRIVACY
	struct list_head	tmp_list;
	struct inet6_ifaddr	*ifpub;
	int			regen_count;
#endif
	struct rcu_head		rcu;
};

struct ip6_sf_socklist {
	unsigned int		sl_max;
	unsigned int		sl_count;
	struct in6_addr		sl_addr[0];
};

#define IP6_SFLSIZE(count)	(sizeof(struct ip6_sf_socklist) + \
	(count) * sizeof(struct in6_addr))

#define IP6_SFBLOCK	10	/* allocate this many at once */

struct ipv6_mc_socklist {
	struct in6_addr		addr;
	int			ifindex;
	struct ipv6_mc_socklist __rcu *next;
	rwlock_t		sflock;
	unsigned int		sfmode;		/* MCAST_{INCLUDE,EXCLUDE} */
	struct ip6_sf_socklist	*sflist;
	struct rcu_head		rcu;
};

struct ip6_sf_list {
	struct ip6_sf_list	*sf_next;
	struct in6_addr		sf_addr;
	unsigned long		sf_count[2];	/* include/exclude counts */
	unsigned char		sf_gsresp;	/* include in g & s response? */
	unsigned char		sf_oldin;	/* change state */
	unsigned char		sf_crcount;	/* retrans. left to send */
};

#define MAF_TIMER_RUNNING	0x01
#define MAF_LAST_REPORTER	0x02
#define MAF_LOADED		0x04
#define MAF_NOREPORT		0x08
#define MAF_GSQUERY		0x10

struct ifmcaddr6 {
	struct in6_addr		mca_addr;
	struct inet6_dev	*idev;
	struct ifmcaddr6	*next;
	struct ip6_sf_list	*mca_sources;
	struct ip6_sf_list	*mca_tomb;
	unsigned int		mca_sfmode;
	unsigned char		mca_crcount;
	unsigned long		mca_sfcount[2];
	struct timer_list	mca_timer;
	unsigned		mca_flags;
	int			mca_users;
	atomic_t		mca_refcnt;
	spinlock_t		mca_lock;
	unsigned long		mca_cstamp;
	unsigned long		mca_tstamp;
};

/* Anycast stuff */

struct ipv6_ac_socklist {
	struct in6_addr		acl_addr;
	int			acl_ifindex;
	struct ipv6_ac_socklist *acl_next;
};

struct ifacaddr6 {
	struct in6_addr		aca_addr;
	struct inet6_dev	*aca_idev;
	struct rt6_info		*aca_rt;
	struct ifacaddr6	*aca_next;
	int			aca_users;
	atomic_t		aca_refcnt;
	spinlock_t		aca_lock;
	unsigned long		aca_cstamp;
	unsigned long		aca_tstamp;
};

#define	IFA_HOST	IPV6_ADDR_LOOPBACK
#define	IFA_LINK	IPV6_ADDR_LINKLOCAL
#define	IFA_SITE	IPV6_ADDR_SITELOCAL

struct ipv6_devstat {
	struct proc_dir_entry	*proc_dir_entry;
	DEFINE_SNMP_STAT(struct ipstats_mib, ipv6);
	DEFINE_SNMP_STAT(struct icmpv6_mib, icmpv6);
	DEFINE_SNMP_STAT(struct icmpv6msg_mib, icmpv6msg);
};

struct inet6_dev {
	struct net_device	*dev;

	struct list_head	addr_list;

	struct ifmcaddr6	*mc_list;
	struct ifmcaddr6	*mc_tomb;
	spinlock_t		mc_lock;
	unsigned char		mc_qrv;
	unsigned char		mc_gq_running;
	unsigned char		mc_ifc_count;
	unsigned long		mc_v1_seen;
	unsigned long		mc_maxdelay;
	struct timer_list	mc_gq_timer;	/* general query timer */
	struct timer_list	mc_ifc_timer;	/* interface change timer */

	struct ifacaddr6	*ac_list;
	rwlock_t		lock;
	atomic_t		refcnt;
	__u32			if_flags;
	int			dead;

#ifdef CONFIG_IPV6_PRIVACY
	u8			rndid[8];
	struct timer_list	regen_timer;
	struct list_head	tempaddr_list;
#endif

	struct neigh_parms	*nd_parms;
	struct inet6_dev	*next;
	struct ipv6_devconf	cnf;
	struct ipv6_devstat	stats;
	unsigned long		tstamp; /* ipv6InterfaceTable update timestamp */
	struct rcu_head		rcu;
};

static inline void ipv6_eth_mc_map(struct in6_addr *addr, char *buf)
{
	/*
	 *	+-------+-------+-------+-------+-------+-------+
	 *      |   33  |   33  | DST13 | DST14 | DST15 | DST16 |
	 *      +-------+-------+-------+-------+-------+-------+
	 */

	buf[0]= 0x33;
	buf[1]= 0x33;

	memcpy(buf + 2, &addr->s6_addr32[3], sizeof(__u32));
}

static inline void ipv6_tr_mc_map(struct in6_addr *addr, char *buf)
{
	/* All nodes FF01::1, FF02::1, FF02::1:FFxx:xxxx */

	if (((addr->s6_addr[0] == 0xFF) &&
	    ((addr->s6_addr[1] == 0x01) || (addr->s6_addr[1] == 0x02)) &&
	     (addr->s6_addr16[1] == 0) &&
	     (addr->s6_addr32[1] == 0) &&
	     (addr->s6_addr32[2] == 0) &&
	     (addr->s6_addr16[6] == 0) &&
	     (addr->s6_addr[15] == 1)) ||
	    ((addr->s6_addr[0] == 0xFF) &&
	     (addr->s6_addr[1] == 0x02) &&
	     (addr->s6_addr16[1] == 0) &&
	     (addr->s6_addr32[1] == 0) &&
	     (addr->s6_addr16[4] == 0) &&
	     (addr->s6_addr[10] == 0) &&
	     (addr->s6_addr[11] == 1) &&
	     (addr->s6_addr[12] == 0xff)))
	{
		buf[0]=0xC0;
		buf[1]=0x00;
		buf[2]=0x01;
		buf[3]=0x00;
		buf[4]=0x00;
		buf[5]=0x00;
	/* All routers FF0x::2 */
	} else if ((addr->s6_addr[0] ==0xff) &&
		((addr->s6_addr[1] & 0xF0) == 0) &&
		(addr->s6_addr16[1] == 0) &&
		(addr->s6_addr32[1] == 0) &&
		(addr->s6_addr32[2] == 0) &&
		(addr->s6_addr16[6] == 0) &&
		(addr->s6_addr[15] == 2))
	{
		buf[0]=0xC0;
		buf[1]=0x00;
		buf[2]=0x02;
		buf[3]=0x00;
		buf[4]=0x00;
		buf[5]=0x00;
	} else {
		unsigned char i ; 
		
		i = addr->s6_addr[15] & 7 ; 
		buf[0]=0xC0;
		buf[1]=0x00;
		buf[2]=0x00;
		buf[3]=0x01 << i ; 
		buf[4]=0x00;
		buf[5]=0x00;
	}
}

static inline void ipv6_arcnet_mc_map(const struct in6_addr *addr, char *buf)
{
	buf[0] = 0x00;
}

static inline void ipv6_ib_mc_map(const struct in6_addr *addr,
				  const unsigned char *broadcast, char *buf)
{
	unsigned char scope = broadcast[5] & 0xF;

	buf[0]  = 0;		/* Reserved */
	buf[1]  = 0xff;		/* Multicast QPN */
	buf[2]  = 0xff;
	buf[3]  = 0xff;
	buf[4]  = 0xff;
	buf[5]  = 0x10 | scope;	/* scope from broadcast address */
	buf[6]  = 0x60;		/* IPv6 signature */
	buf[7]  = 0x1b;
	buf[8]  = broadcast[8];	/* P_Key */
	buf[9]  = broadcast[9];
	memcpy(buf + 10, addr->s6_addr + 6, 10);
}
#endif
#endif
Commit	Line	Data
1da177e4 LT	1	/*
	2	* inet6 interface/address list definitions
	3	* Linux INET6 implementation
	4	*
	5	* Authors:
	6	* Pedro Roque <roque@di.fc.ul.pt>
	7	*
	8	*
	9	* This program is free software; you can redistribute it and/or
	10	* modify it under the terms of the GNU General Public License
	11	* as published by the Free Software Foundation; either version
	12	* 2 of the License, or (at your option) any later version.
	13	*/
	14
	15	#ifndef _NET_IF_INET6_H
	16	#define _NET_IF_INET6_H
	17
	18	#include <net/snmp.h>
	19	#include <linux/ipv6.h>
	20
	21	/* inet6_dev.if_flags */
	22
	23	#define IF_RA_OTHERCONF 0x80
	24	#define IF_RA_MANAGED 0x40
	25	#define IF_RA_RCVD 0x20
	26	#define IF_RS_SENT 0x10
3c21edbd	27	#define IF_READY 0x80000000
1da177e4 LT	28
	29	/* prefix flags */
	30	#define IF_PREFIX_ONLINK 0x01
	31	#define IF_PREFIX_AUTOCONF 0x02
	32
	33	#ifdef __KERNEL__
	34
e9d3e084 HX	35	enum {
	36	INET6_IFADDR_STATE_DAD,
	37	INET6_IFADDR_STATE_POSTDAD,
	38	INET6_IFADDR_STATE_UP,
	39	INET6_IFADDR_STATE_DEAD,
	40	};
	41
fd2c3ef7	42	struct inet6_ifaddr {
1da177e4 LT	43	struct in6_addr addr;
	44	__u32 prefix_len;
	45
	46	__u32 valid_lft;
	47	__u32 prefered_lft;
1da177e4 LT	48	atomic_t refcnt;
1da177e4 LT	49	spinlock_t lock;
e9d3e084 HX	50	spinlock_t state_lock;
	51
	52	int state;
1da177e4 LT	53
	54	__u8 probes;
	55	__u8 flags;
	56
	57	__u16 scope;
	58
04ec5cfc RK	59	unsigned long cstamp; /* created timestamp */
	60	unsigned long tstamp; /* updated timestamp */
	61
1da177e4 LT	62	struct timer_list timer;
	63
	64	struct inet6_dev *idev;
	65	struct rt6_info *rt;
	66
c2e21293	67	struct hlist_node addr_lst;
502a2ffd	68	struct list_head if_list;
1da177e4 LT	69
1da177e4 LT	70	#ifdef CONFIG_IPV6_PRIVACY
372e6c8f	71	struct list_head tmp_list;
1da177e4 LT	72	struct inet6_ifaddr *ifpub;
	73	int regen_count;
	74	#endif
5c578aed	75	struct rcu_head rcu;
1da177e4 LT	76	};
1da177e4 LT	77
fd2c3ef7	78	struct ip6_sf_socklist {
1da177e4 LT	79	unsigned int sl_max;
	80	unsigned int sl_count;
	81	struct in6_addr sl_addr[0];
	82	};
	83
	84	#define IP6_SFLSIZE(count) (sizeof(struct ip6_sf_socklist) + \
	85	(count) * sizeof(struct in6_addr))
	86
	87	#define IP6_SFBLOCK 10 /* allocate this many at once */
	88
fd2c3ef7	89	struct ipv6_mc_socklist {
1da177e4 LT	90	struct in6_addr addr;
1da177e4 LT	91	int ifindex;
456b61bc	92	struct ipv6_mc_socklist __rcu *next;
5ab4a6c8	93	rwlock_t sflock;
1da177e4 LT	94	unsigned int sfmode; /* MCAST_{INCLUDE,EXCLUDE} */
1da177e4 LT	95	struct ip6_sf_socklist *sflist;
456b61bc	96	struct rcu_head rcu;
1da177e4 LT	97	};
1da177e4 LT	98
fd2c3ef7	99	struct ip6_sf_list {
1da177e4 LT	100	struct ip6_sf_list *sf_next;
	101	struct in6_addr sf_addr;
	102	unsigned long sf_count[2]; /* include/exclude counts */
	103	unsigned char sf_gsresp; /* include in g & s response? */
	104	unsigned char sf_oldin; /* change state */
	105	unsigned char sf_crcount; /* retrans. left to send */
	106	};
	107
	108	#define MAF_TIMER_RUNNING 0x01
	109	#define MAF_LAST_REPORTER 0x02
	110	#define MAF_LOADED 0x04
	111	#define MAF_NOREPORT 0x08
	112	#define MAF_GSQUERY 0x10
	113
fd2c3ef7	114	struct ifmcaddr6 {
1da177e4 LT	115	struct in6_addr mca_addr;
	116	struct inet6_dev *idev;
	117	struct ifmcaddr6 *next;
	118	struct ip6_sf_list *mca_sources;
	119	struct ip6_sf_list *mca_tomb;
	120	unsigned int mca_sfmode;
246f19d1	121	unsigned char mca_crcount;
1da177e4 LT	122	unsigned long mca_sfcount[2];
	123	struct timer_list mca_timer;
	124	unsigned mca_flags;
	125	int mca_users;
	126	atomic_t mca_refcnt;
	127	spinlock_t mca_lock;
1da177e4 LT	128	unsigned long mca_cstamp;
	129	unsigned long mca_tstamp;
	130	};
	131
	132	/* Anycast stuff */
	133
fd2c3ef7	134	struct ipv6_ac_socklist {
1da177e4 LT	135	struct in6_addr acl_addr;
	136	int acl_ifindex;
	137	struct ipv6_ac_socklist *acl_next;
	138	};
	139
fd2c3ef7	140	struct ifacaddr6 {
1da177e4 LT	141	struct in6_addr aca_addr;
	142	struct inet6_dev *aca_idev;
	143	struct rt6_info *aca_rt;
	144	struct ifacaddr6 *aca_next;
	145	int aca_users;
	146	atomic_t aca_refcnt;
	147	spinlock_t aca_lock;
	148	unsigned long aca_cstamp;
	149	unsigned long aca_tstamp;
	150	};
	151
	152	#define IFA_HOST IPV6_ADDR_LOOPBACK
	153	#define IFA_LINK IPV6_ADDR_LINKLOCAL
	154	#define IFA_SITE IPV6_ADDR_SITELOCAL
1da177e4 LT	155
	156	struct ipv6_devstat {
	157	struct proc_dir_entry *proc_dir_entry;
a11d206d	158	DEFINE_SNMP_STAT(struct ipstats_mib, ipv6);
1da177e4	159	DEFINE_SNMP_STAT(struct icmpv6_mib, icmpv6);
14878f75	160	DEFINE_SNMP_STAT(struct icmpv6msg_mib, icmpv6msg);
1da177e4 LT	161	};
1da177e4 LT	162
fd2c3ef7	163	struct inet6_dev {
502a2ffd	164	struct net_device *dev;
1da177e4	165
502a2ffd	166	struct list_head addr_list;
1da177e4 LT	167
	168	struct ifmcaddr6 *mc_list;
	169	struct ifmcaddr6 *mc_tomb;
6457d26b	170	spinlock_t mc_lock;
1da177e4 LT	171	unsigned char mc_qrv;
	172	unsigned char mc_gq_running;
	173	unsigned char mc_ifc_count;
4e7e5cfe ACM	174	unsigned long mc_v1_seen;
4e7e5cfe ACM	175	unsigned long mc_maxdelay;
1da177e4 LT	176	struct timer_list mc_gq_timer; /* general query timer */
	177	struct timer_list mc_ifc_timer; /* interface change timer */
	178
	179	struct ifacaddr6 *ac_list;
	180	rwlock_t lock;
	181	atomic_t refcnt;
	182	__u32 if_flags;
	183	int dead;
	184
	185	#ifdef CONFIG_IPV6_PRIVACY
	186	u8 rndid[8];
1da177e4	187	struct timer_list regen_timer;
372e6c8f	188	struct list_head tempaddr_list;
1da177e4 LT	189	#endif
	190
	191	struct neigh_parms *nd_parms;
	192	struct inet6_dev *next;
	193	struct ipv6_devconf cnf;
	194	struct ipv6_devstat stats;
	195	unsigned long tstamp; /* ipv6InterfaceTable update timestamp */
8814c4b5	196	struct rcu_head rcu;
1da177e4 LT	197	};
1da177e4 LT	198
1da177e4 LT	199	static inline void ipv6_eth_mc_map(struct in6_addr addr, char buf)
	200	{
	201	/*
	202	* +-------+-------+-------+-------+-------+-------+
	203	* \| 33 \| 33 \| DST13 \| DST14 \| DST15 \| DST16 \|
	204	* +-------+-------+-------+-------+-------+-------+
	205	*/
	206
	207	buf[0]= 0x33;
	208	buf[1]= 0x33;
	209
	210	memcpy(buf + 2, &addr->s6_addr32[3], sizeof(__u32));
	211	}
	212
	213	static inline void ipv6_tr_mc_map(struct in6_addr addr, char buf)
	214	{
	215	/* All nodes FF01::1, FF02::1, FF02::1:FFxx:xxxx */
	216
	217	if (((addr->s6_addr[0] == 0xFF) &&
	218	((addr->s6_addr[1] == 0x01) \|\| (addr->s6_addr[1] == 0x02)) &&
	219	(addr->s6_addr16[1] == 0) &&
	220	(addr->s6_addr32[1] == 0) &&
	221	(addr->s6_addr32[2] == 0) &&
	222	(addr->s6_addr16[6] == 0) &&
	223	(addr->s6_addr[15] == 1)) \|\|
	224	((addr->s6_addr[0] == 0xFF) &&
	225	(addr->s6_addr[1] == 0x02) &&
	226	(addr->s6_addr16[1] == 0) &&
	227	(addr->s6_addr32[1] == 0) &&
	228	(addr->s6_addr16[4] == 0) &&
	229	(addr->s6_addr[10] == 0) &&
	230	(addr->s6_addr[11] == 1) &&
	231	(addr->s6_addr[12] == 0xff)))
	232	{
	233	buf[0]=0xC0;
	234	buf[1]=0x00;
	235	buf[2]=0x01;
	236	buf[3]=0x00;
	237	buf[4]=0x00;
	238	buf[5]=0x00;
	239	/* All routers FF0x::2 */
	240	} else if ((addr->s6_addr[0] ==0xff) &&
	241	((addr->s6_addr[1] & 0xF0) == 0) &&
	242	(addr->s6_addr16[1] == 0) &&
	243	(addr->s6_addr32[1] == 0) &&
	244	(addr->s6_addr32[2] == 0) &&
	245	(addr->s6_addr16[6] == 0) &&
	246	(addr->s6_addr[15] == 2))
	247	{
	248	buf[0]=0xC0;
	249	buf[1]=0x00;
	250	buf[2]=0x02;
	251	buf[3]=0x00;
	252	buf[4]=0x00;
	253	buf[5]=0x00;
	254	} else {
	255	unsigned char i ;
	256
	257	i = addr->s6_addr[15] & 7 ;
	258	buf[0]=0xC0;
	259	buf[1]=0x00;
	260	buf[2]=0x00;
	261	buf[3]=0x01 << i ;
	262	buf[4]=0x00;
263	buf[5]=0x00;
264	}
265	}
266
267	static inline void ipv6_arcnet_mc_map(const struct in6_addr addr, char buf)
268	{
269	buf[0] = 0x00;
270	}
271
a9e527e3 RM	272	static inline void ipv6_ib_mc_map(const struct in6_addr *addr,
a9e527e3 RM	273	const unsigned char broadcast, char buf)
1da177e4	274	{
a9e527e3 RM	275	unsigned char scope = broadcast[5] & 0xF;
a9e527e3 RM	276
1da177e4 LT	277	buf[0] = 0; /* Reserved */
	278	buf[1] = 0xff; /* Multicast QPN */
	279	buf[2] = 0xff;
	280	buf[3] = 0xff;
	281	buf[4] = 0xff;
a9e527e3	282	buf[5] = 0x10 \| scope; /* scope from broadcast address */
1da177e4 LT	283	buf[6] = 0x60; /* IPv6 signature */
1da177e4 LT	284	buf[7] = 0x1b;
a9e527e3 RM	285	buf[8] = broadcast[8]; /* P_Key */
a9e527e3 RM	286	buf[9] = broadcast[9];
1da177e4 LT	287	memcpy(buf + 10, addr->s6_addr + 6, 10);
	288	}
	289	#endif
	290	#endif