[deliverable/linux.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

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_ATOMIC(struct icmpv6_mib_device, icmpv6dev);
	DEFINE_SNMP_STAT_ATOMIC(struct icmpv6msg_mib_device, icmpv6msgdev);
};

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(const 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(const 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);
}

static inline int ipv6_ipgre_mc_map(const struct in6_addr *addr,
				    const unsigned char *broadcast, char *buf)
{
	if ((broadcast[0] | broadcast[1] | broadcast[2] | broadcast[3]) != 0) {
		memcpy(buf, broadcast, 4);
	} else {
		/* v4mapped? */
		if ((addr->s6_addr32[0] | addr->s6_addr32[1] |
		     (addr->s6_addr32[2] ^ htonl(0x0000ffff))) != 0)
			return -EINVAL;
		memcpy(buf, &addr->s6_addr32[3], 4);
	}
	return 0;
}

#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
e9d3e084 HX	33	enum {
	34	INET6_IFADDR_STATE_DAD,
	35	INET6_IFADDR_STATE_POSTDAD,
	36	INET6_IFADDR_STATE_UP,
	37	INET6_IFADDR_STATE_DEAD,
	38	};
	39
fd2c3ef7	40	struct inet6_ifaddr {
1da177e4 LT	41	struct in6_addr addr;
	42	__u32 prefix_len;
	43
	44	__u32 valid_lft;
	45	__u32 prefered_lft;
1da177e4 LT	46	atomic_t refcnt;
1da177e4 LT	47	spinlock_t lock;
e9d3e084 HX	48	spinlock_t state_lock;
	49
	50	int state;
1da177e4 LT	51
	52	__u8 probes;
	53	__u8 flags;
	54
	55	__u16 scope;
	56
04ec5cfc RK	57	unsigned long cstamp; /* created timestamp */
	58	unsigned long tstamp; /* updated timestamp */
	59
1da177e4 LT	60	struct timer_list timer;
	61
	62	struct inet6_dev *idev;
	63	struct rt6_info *rt;
	64
c2e21293	65	struct hlist_node addr_lst;
502a2ffd	66	struct list_head if_list;
1da177e4 LT	67
1da177e4 LT	68	#ifdef CONFIG_IPV6_PRIVACY
372e6c8f	69	struct list_head tmp_list;
1da177e4 LT	70	struct inet6_ifaddr *ifpub;
	71	int regen_count;
	72	#endif
5c578aed	73	struct rcu_head rcu;
1da177e4 LT	74	};
1da177e4 LT	75
fd2c3ef7	76	struct ip6_sf_socklist {
1da177e4 LT	77	unsigned int sl_max;
	78	unsigned int sl_count;
	79	struct in6_addr sl_addr[0];
	80	};
	81
	82	#define IP6_SFLSIZE(count) (sizeof(struct ip6_sf_socklist) + \
	83	(count) * sizeof(struct in6_addr))
	84
	85	#define IP6_SFBLOCK 10 /* allocate this many at once */
	86
fd2c3ef7	87	struct ipv6_mc_socklist {
1da177e4 LT	88	struct in6_addr addr;
1da177e4 LT	89	int ifindex;
456b61bc	90	struct ipv6_mc_socklist __rcu *next;
5ab4a6c8	91	rwlock_t sflock;
1da177e4 LT	92	unsigned int sfmode; /* MCAST_{INCLUDE,EXCLUDE} */
1da177e4 LT	93	struct ip6_sf_socklist *sflist;
456b61bc	94	struct rcu_head rcu;
1da177e4 LT	95	};
1da177e4 LT	96
fd2c3ef7	97	struct ip6_sf_list {
1da177e4 LT	98	struct ip6_sf_list *sf_next;
	99	struct in6_addr sf_addr;
	100	unsigned long sf_count[2]; /* include/exclude counts */
	101	unsigned char sf_gsresp; /* include in g & s response? */
	102	unsigned char sf_oldin; /* change state */
	103	unsigned char sf_crcount; /* retrans. left to send */
	104	};
	105
	106	#define MAF_TIMER_RUNNING 0x01
	107	#define MAF_LAST_REPORTER 0x02
	108	#define MAF_LOADED 0x04
	109	#define MAF_NOREPORT 0x08
	110	#define MAF_GSQUERY 0x10
	111
fd2c3ef7	112	struct ifmcaddr6 {
1da177e4 LT	113	struct in6_addr mca_addr;
	114	struct inet6_dev *idev;
	115	struct ifmcaddr6 *next;
	116	struct ip6_sf_list *mca_sources;
	117	struct ip6_sf_list *mca_tomb;
	118	unsigned int mca_sfmode;
246f19d1	119	unsigned char mca_crcount;
1da177e4 LT	120	unsigned long mca_sfcount[2];
	121	struct timer_list mca_timer;
	122	unsigned mca_flags;
	123	int mca_users;
	124	atomic_t mca_refcnt;
	125	spinlock_t mca_lock;
1da177e4 LT	126	unsigned long mca_cstamp;
	127	unsigned long mca_tstamp;
	128	};
	129
	130	/* Anycast stuff */
	131
fd2c3ef7	132	struct ipv6_ac_socklist {
1da177e4 LT	133	struct in6_addr acl_addr;
	134	int acl_ifindex;
	135	struct ipv6_ac_socklist *acl_next;
	136	};
	137
fd2c3ef7	138	struct ifacaddr6 {
1da177e4 LT	139	struct in6_addr aca_addr;
	140	struct inet6_dev *aca_idev;
	141	struct rt6_info *aca_rt;
	142	struct ifacaddr6 *aca_next;
	143	int aca_users;
	144	atomic_t aca_refcnt;
	145	spinlock_t aca_lock;
	146	unsigned long aca_cstamp;
	147	unsigned long aca_tstamp;
	148	};
	149
	150	#define IFA_HOST IPV6_ADDR_LOOPBACK
	151	#define IFA_LINK IPV6_ADDR_LINKLOCAL
	152	#define IFA_SITE IPV6_ADDR_SITELOCAL
1da177e4 LT	153
	154	struct ipv6_devstat {
	155	struct proc_dir_entry *proc_dir_entry;
a11d206d	156	DEFINE_SNMP_STAT(struct ipstats_mib, ipv6);
be281e55 ED	157	DEFINE_SNMP_STAT_ATOMIC(struct icmpv6_mib_device, icmpv6dev);
be281e55 ED	158	DEFINE_SNMP_STAT_ATOMIC(struct icmpv6msg_mib_device, icmpv6msgdev);
1da177e4 LT	159	};
1da177e4 LT	160
fd2c3ef7	161	struct inet6_dev {
502a2ffd	162	struct net_device *dev;
1da177e4	163
502a2ffd	164	struct list_head addr_list;
1da177e4 LT	165
	166	struct ifmcaddr6 *mc_list;
	167	struct ifmcaddr6 *mc_tomb;
6457d26b	168	spinlock_t mc_lock;
1da177e4 LT	169	unsigned char mc_qrv;
	170	unsigned char mc_gq_running;
	171	unsigned char mc_ifc_count;
4e7e5cfe ACM	172	unsigned long mc_v1_seen;
4e7e5cfe ACM	173	unsigned long mc_maxdelay;
1da177e4 LT	174	struct timer_list mc_gq_timer; /* general query timer */
	175	struct timer_list mc_ifc_timer; /* interface change timer */
	176
	177	struct ifacaddr6 *ac_list;
	178	rwlock_t lock;
	179	atomic_t refcnt;
	180	__u32 if_flags;
	181	int dead;
	182
	183	#ifdef CONFIG_IPV6_PRIVACY
	184	u8 rndid[8];
1da177e4	185	struct timer_list regen_timer;
372e6c8f	186	struct list_head tempaddr_list;
1da177e4 LT	187	#endif
	188
	189	struct neigh_parms *nd_parms;
	190	struct inet6_dev *next;
	191	struct ipv6_devconf cnf;
	192	struct ipv6_devstat stats;
	193	unsigned long tstamp; /* ipv6InterfaceTable update timestamp */
8814c4b5	194	struct rcu_head rcu;
1da177e4 LT	195	};
1da177e4 LT	196
b71d1d42	197	static inline void ipv6_eth_mc_map(const struct in6_addr addr, char buf)
1da177e4 LT	198	{
	199	/*
	200	* +-------+-------+-------+-------+-------+-------+
	201	* \| 33 \| 33 \| DST13 \| DST14 \| DST15 \| DST16 \|
	202	* +-------+-------+-------+-------+-------+-------+
	203	*/
	204
	205	buf[0]= 0x33;
	206	buf[1]= 0x33;
	207
	208	memcpy(buf + 2, &addr->s6_addr32[3], sizeof(__u32));
	209	}
	210
b71d1d42	211	static inline void ipv6_tr_mc_map(const struct in6_addr addr, char buf)
1da177e4 LT	212	{
	213	/* All nodes FF01::1, FF02::1, FF02::1:FFxx:xxxx */
	214
	215	if (((addr->s6_addr[0] == 0xFF) &&
	216	((addr->s6_addr[1] == 0x01) \|\| (addr->s6_addr[1] == 0x02)) &&
	217	(addr->s6_addr16[1] == 0) &&
	218	(addr->s6_addr32[1] == 0) &&
	219	(addr->s6_addr32[2] == 0) &&
	220	(addr->s6_addr16[6] == 0) &&
	221	(addr->s6_addr[15] == 1)) \|\|
	222	((addr->s6_addr[0] == 0xFF) &&
	223	(addr->s6_addr[1] == 0x02) &&
	224	(addr->s6_addr16[1] == 0) &&
	225	(addr->s6_addr32[1] == 0) &&
	226	(addr->s6_addr16[4] == 0) &&
	227	(addr->s6_addr[10] == 0) &&
	228	(addr->s6_addr[11] == 1) &&
	229	(addr->s6_addr[12] == 0xff)))
	230	{
	231	buf[0]=0xC0;
	232	buf[1]=0x00;
	233	buf[2]=0x01;
	234	buf[3]=0x00;
	235	buf[4]=0x00;
	236	buf[5]=0x00;
	237	/* All routers FF0x::2 */
	238	} else if ((addr->s6_addr[0] ==0xff) &&
	239	((addr->s6_addr[1] & 0xF0) == 0) &&
	240	(addr->s6_addr16[1] == 0) &&
	241	(addr->s6_addr32[1] == 0) &&
	242	(addr->s6_addr32[2] == 0) &&
	243	(addr->s6_addr16[6] == 0) &&
	244	(addr->s6_addr[15] == 2))
	245	{
	246	buf[0]=0xC0;
	247	buf[1]=0x00;
	248	buf[2]=0x02;
	249	buf[3]=0x00;
	250	buf[4]=0x00;
	251	buf[5]=0x00;
	252	} else {
	253	unsigned char i ;
	254
	255	i = addr->s6_addr[15] & 7 ;
	256	buf[0]=0xC0;
	257	buf[1]=0x00;
	258	buf[2]=0x00;
	259	buf[3]=0x01 << i ;
	260	buf[4]=0x00;
	261	buf[5]=0x00;
	262	}
	263	}
	264
	265	static inline void ipv6_arcnet_mc_map(const struct in6_addr addr, char buf)
	266	{
	267	buf[0] = 0x00;
	268	}
	269
a9e527e3 RM	270	static inline void ipv6_ib_mc_map(const struct in6_addr *addr,
a9e527e3 RM	271	const unsigned char broadcast, char buf)
1da177e4	272	{
a9e527e3 RM	273	unsigned char scope = broadcast[5] & 0xF;
a9e527e3 RM	274
1da177e4 LT	275	buf[0] = 0; /* Reserved */
	276	buf[1] = 0xff; /* Multicast QPN */
	277	buf[2] = 0xff;
	278	buf[3] = 0xff;
	279	buf[4] = 0xff;
a9e527e3	280	buf[5] = 0x10 \| scope; /* scope from broadcast address */
1da177e4 LT	281	buf[6] = 0x60; /* IPv6 signature */
1da177e4 LT	282	buf[7] = 0x1b;
a9e527e3 RM	283	buf[8] = broadcast[8]; /* P_Key */
a9e527e3 RM	284	buf[9] = broadcast[9];
1da177e4 LT	285	memcpy(buf + 10, addr->s6_addr + 6, 10);
1da177e4 LT	286	}
93ca3bb5 TT	287
	288	static inline int ipv6_ipgre_mc_map(const struct in6_addr *addr,
	289	const unsigned char broadcast, char buf)
	290	{
	291	if ((broadcast[0] \| broadcast[1] \| broadcast[2] \| broadcast[3]) != 0) {
	292	memcpy(buf, broadcast, 4);
	293	} else {
	294	/* v4mapped? */
	295	if ((addr->s6_addr32[0] \| addr->s6_addr32[1] \|
	296	(addr->s6_addr32[2] ^ htonl(0x0000ffff))) != 0)
	297	return -EINVAL;
	298	memcpy(buf, &addr->s6_addr32[3], 4);
	299	}
	300	return 0;
	301	}
	302
1da177e4	303	#endif