[linux-2.6-block.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>
#include <linux/refcount.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_PREDAD,
	INET6_IFADDR_STATE_DAD,
	INET6_IFADDR_STATE_POSTDAD,
	INET6_IFADDR_STATE_ERRDAD,
	INET6_IFADDR_STATE_DEAD,
};

struct inet6_ifaddr {
	struct in6_addr		addr;
	__u32			prefix_len;
	__u32			rt_priority;

	/* In seconds, relative to tstamp. Expiry is at tstamp + HZ * lft. */
	__u32			valid_lft;
	__u32			prefered_lft;
	refcount_t		refcnt;
	spinlock_t		lock;

	int			state;

	__u32			flags;
	__u8			dad_probes;
	__u8			stable_privacy_retry;

	__u16			scope;
	__u64			dad_nonce;

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

	struct delayed_work	dad_work;

	struct inet6_dev	*idev;
	struct fib6_info	*rt;

	struct hlist_node	addr_lst;
	struct list_head	if_list;

	struct list_head	tmp_list;
	struct inet6_ifaddr	*ifpub;
	int			regen_count;

	bool			tokenized;

	struct rcu_head		rcu;
	struct in6_addr		peer_addr;
};

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 int		mca_flags;
	int			mca_users;
	refcount_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 fib6_info	*aca_rt;
	struct ifacaddr6	*aca_next;
	struct hlist_node	aca_addr_lst;
	int			aca_users;
	refcount_t		aca_refcnt;
	unsigned long		aca_cstamp;
	unsigned long		aca_tstamp;
	struct rcu_head		rcu;
};

#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;		/* Query Robustness Variable */
	unsigned char		mc_gq_running;
	unsigned char		mc_ifc_count;
	unsigned char		mc_dad_count;

	unsigned long		mc_v1_seen;	/* Max time we stay in MLDv1 mode */
	unsigned long		mc_qi;		/* Query Interval */
	unsigned long		mc_qri;		/* Query Response Interval */
	unsigned long		mc_maxdelay;

	struct timer_list	mc_gq_timer;	/* general query timer */
	struct timer_list	mc_ifc_timer;	/* interface change timer */
	struct timer_list	mc_dad_timer;	/* dad complete mc timer */

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

	u32			desync_factor;
	u8			rndid[8];
	struct list_head	tempaddr_list;

	struct in6_addr		token;

	struct neigh_parms	*nd_parms;
	struct ipv6_devconf	cnf;
	struct ipv6_devstat	stats;

	struct timer_list	rs_timer;
	__s32			rs_interval;	/* in jiffies */
	__u8			rs_probes;

	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_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>
1be92460	20	#include <linux/refcount.h>
1da177e4 LT	21
	22	/* inet6_dev.if_flags */
	23
	24	#define IF_RA_OTHERCONF 0x80
	25	#define IF_RA_MANAGED 0x40
	26	#define IF_RA_RCVD 0x20
	27	#define IF_RS_SENT 0x10
3c21edbd	28	#define IF_READY 0x80000000
1da177e4 LT	29
	30	/* prefix flags */
	31	#define IF_PREFIX_ONLINK 0x01
	32	#define IF_PREFIX_AUTOCONF 0x02
	33
e9d3e084	34	enum {
c15b1cca	35	INET6_IFADDR_STATE_PREDAD,
e9d3e084 HX	36	INET6_IFADDR_STATE_DAD,
e9d3e084 HX	37	INET6_IFADDR_STATE_POSTDAD,
c15b1cca	38	INET6_IFADDR_STATE_ERRDAD,
e9d3e084 HX	39	INET6_IFADDR_STATE_DEAD,
	40	};
	41
fd2c3ef7	42	struct inet6_ifaddr {
1da177e4 LT	43	struct in6_addr addr;
1da177e4 LT	44	__u32 prefix_len;
8308f3ff	45	__u32 rt_priority;
8e8e676d	46
76f793e3	47	/* In seconds, relative to tstamp. Expiry is at tstamp + HZ * lft. */
1da177e4 LT	48	__u32 valid_lft;
1da177e4 LT	49	__u32 prefered_lft;
271201c0	50	refcount_t refcnt;
1da177e4	51	spinlock_t lock;
e9d3e084 HX	52
e9d3e084 HX	53	int state;
1da177e4	54
479840ff	55	__u32 flags;
b7b1bfce	56	__u8 dad_probes;
5f40ef77	57	__u8 stable_privacy_retry;
1da177e4 LT	58
1da177e4 LT	59	__u16 scope;
adc176c5	60	__u64 dad_nonce;
1da177e4	61
04ec5cfc RK	62	unsigned long cstamp; /* created timestamp */
	63	unsigned long tstamp; /* updated timestamp */
	64
c15b1cca	65	struct delayed_work dad_work;
1da177e4 LT	66
1da177e4 LT	67	struct inet6_dev *idev;
8d1c802b	68	struct fib6_info *rt;
1da177e4	69
c2e21293	70	struct hlist_node addr_lst;
502a2ffd	71	struct list_head if_list;
1da177e4	72
372e6c8f	73	struct list_head tmp_list;
1da177e4 LT	74	struct inet6_ifaddr *ifpub;
1da177e4 LT	75	int regen_count;
5d9efa7e	76
617fe29d DB	77	bool tokenized;
617fe29d DB	78
5c578aed	79	struct rcu_head rcu;
caeaba79	80	struct in6_addr peer_addr;
1da177e4 LT	81	};
1da177e4 LT	82
fd2c3ef7	83	struct ip6_sf_socklist {
1da177e4 LT	84	unsigned int sl_max;
	85	unsigned int sl_count;
	86	struct in6_addr sl_addr[0];
	87	};
	88
	89	#define IP6_SFLSIZE(count) (sizeof(struct ip6_sf_socklist) + \
	90	(count) * sizeof(struct in6_addr))
	91
	92	#define IP6_SFBLOCK 10 /* allocate this many at once */
	93
fd2c3ef7	94	struct ipv6_mc_socklist {
1da177e4 LT	95	struct in6_addr addr;
1da177e4 LT	96	int ifindex;
456b61bc	97	struct ipv6_mc_socklist __rcu *next;
5ab4a6c8	98	rwlock_t sflock;
1da177e4 LT	99	unsigned int sfmode; /* MCAST_{INCLUDE,EXCLUDE} */
1da177e4 LT	100	struct ip6_sf_socklist *sflist;
456b61bc	101	struct rcu_head rcu;
1da177e4 LT	102	};
1da177e4 LT	103
fd2c3ef7	104	struct ip6_sf_list {
1da177e4 LT	105	struct ip6_sf_list *sf_next;
	106	struct in6_addr sf_addr;
	107	unsigned long sf_count[2]; /* include/exclude counts */
	108	unsigned char sf_gsresp; /* include in g & s response? */
	109	unsigned char sf_oldin; /* change state */
	110	unsigned char sf_crcount; /* retrans. left to send */
	111	};
	112
	113	#define MAF_TIMER_RUNNING 0x01
	114	#define MAF_LAST_REPORTER 0x02
	115	#define MAF_LOADED 0x04
	116	#define MAF_NOREPORT 0x08
	117	#define MAF_GSQUERY 0x10
	118
fd2c3ef7	119	struct ifmcaddr6 {
1da177e4 LT	120	struct in6_addr mca_addr;
	121	struct inet6_dev *idev;
	122	struct ifmcaddr6 *next;
	123	struct ip6_sf_list *mca_sources;
	124	struct ip6_sf_list *mca_tomb;
	125	unsigned int mca_sfmode;
246f19d1	126	unsigned char mca_crcount;
1da177e4 LT	127	unsigned long mca_sfcount[2];
1da177e4 LT	128	struct timer_list mca_timer;
95c96174	129	unsigned int mca_flags;
1da177e4	130	int mca_users;
d3981bc6	131	refcount_t mca_refcnt;
1da177e4	132	spinlock_t mca_lock;
1da177e4 LT	133	unsigned long mca_cstamp;
	134	unsigned long mca_tstamp;
	135	};
	136
	137	/* Anycast stuff */
	138
fd2c3ef7	139	struct ipv6_ac_socklist {
1da177e4 LT	140	struct in6_addr acl_addr;
	141	int acl_ifindex;
	142	struct ipv6_ac_socklist *acl_next;
	143	};
	144
fd2c3ef7	145	struct ifacaddr6 {
1da177e4	146	struct in6_addr aca_addr;
8d1c802b	147	struct fib6_info *aca_rt;
1da177e4	148	struct ifacaddr6 *aca_next;
2384d025	149	struct hlist_node aca_addr_lst;
1da177e4	150	int aca_users;
affa78bc	151	refcount_t aca_refcnt;
1da177e4 LT	152	unsigned long aca_cstamp;
1da177e4 LT	153	unsigned long aca_tstamp;
2384d025	154	struct rcu_head rcu;
1da177e4 LT	155	};
	156
	157	#define IFA_HOST IPV6_ADDR_LOOPBACK
	158	#define IFA_LINK IPV6_ADDR_LINKLOCAL
	159	#define IFA_SITE IPV6_ADDR_SITELOCAL
1da177e4 LT	160
	161	struct ipv6_devstat {
	162	struct proc_dir_entry *proc_dir_entry;
a11d206d	163	DEFINE_SNMP_STAT(struct ipstats_mib, ipv6);
be281e55 ED	164	DEFINE_SNMP_STAT_ATOMIC(struct icmpv6_mib_device, icmpv6dev);
be281e55 ED	165	DEFINE_SNMP_STAT_ATOMIC(struct icmpv6msg_mib_device, icmpv6msgdev);
1da177e4 LT	166	};
1da177e4 LT	167
fd2c3ef7	168	struct inet6_dev {
502a2ffd	169	struct net_device *dev;
1da177e4	170
502a2ffd	171	struct list_head addr_list;
1da177e4 LT	172
	173	struct ifmcaddr6 *mc_list;
	174	struct ifmcaddr6 *mc_tomb;
6457d26b	175	spinlock_t mc_lock;
89225d1c DB	176
89225d1c DB	177	unsigned char mc_qrv; /* Query Robustness Variable */
1da177e4 LT	178	unsigned char mc_gq_running;
1da177e4 LT	179	unsigned char mc_ifc_count;
b173ee48	180	unsigned char mc_dad_count;
89225d1c DB	181
	182	unsigned long mc_v1_seen; /* Max time we stay in MLDv1 mode */
	183	unsigned long mc_qi; /* Query Interval */
	184	unsigned long mc_qri; /* Query Response Interval */
4e7e5cfe	185	unsigned long mc_maxdelay;
89225d1c	186
1da177e4 LT	187	struct timer_list mc_gq_timer; /* general query timer */
1da177e4 LT	188	struct timer_list mc_ifc_timer; /* interface change timer */
b173ee48	189	struct timer_list mc_dad_timer; /* dad complete mc timer */
1da177e4 LT	190
	191	struct ifacaddr6 *ac_list;
	192	rwlock_t lock;
1be92460	193	refcount_t refcnt;
1da177e4 LT	194	__u32 if_flags;
	195	int dead;
	196
76506a98	197	u32 desync_factor;
1da177e4	198	u8 rndid[8];
372e6c8f	199	struct list_head tempaddr_list;
1da177e4	200
f53adae4 DB	201	struct in6_addr token;
f53adae4 DB	202
1da177e4	203	struct neigh_parms *nd_parms;
1da177e4 LT	204	struct ipv6_devconf cnf;
1da177e4 LT	205	struct ipv6_devstat stats;
b7b1bfce HFS	206
b7b1bfce HFS	207	struct timer_list rs_timer;
bd11f074	208	__s32 rs_interval; /* in jiffies */
b7b1bfce HFS	209	__u8 rs_probes;
b7b1bfce HFS	210
1da177e4	211	unsigned long tstamp; /* ipv6InterfaceTable update timestamp */
8814c4b5	212	struct rcu_head rcu;
1da177e4 LT	213	};
1da177e4 LT	214
b71d1d42	215	static inline void ipv6_eth_mc_map(const struct in6_addr addr, char buf)
1da177e4 LT	216	{
	217	/*
	218	* +-------+-------+-------+-------+-------+-------+
	219	* \| 33 \| 33 \| DST13 \| DST14 \| DST15 \| DST16 \|
	220	* +-------+-------+-------+-------+-------+-------+
	221	*/
	222
	223	buf[0]= 0x33;
	224	buf[1]= 0x33;
	225
	226	memcpy(buf + 2, &addr->s6_addr32[3], sizeof(__u32));
	227	}
	228
1da177e4 LT	229	static inline void ipv6_arcnet_mc_map(const struct in6_addr addr, char buf)
	230	{
	231	buf[0] = 0x00;
	232	}
	233
a9e527e3 RM	234	static inline void ipv6_ib_mc_map(const struct in6_addr *addr,
a9e527e3 RM	235	const unsigned char broadcast, char buf)
1da177e4	236	{
a9e527e3 RM	237	unsigned char scope = broadcast[5] & 0xF;
a9e527e3 RM	238
1da177e4 LT	239	buf[0] = 0; /* Reserved */
	240	buf[1] = 0xff; /* Multicast QPN */
	241	buf[2] = 0xff;
	242	buf[3] = 0xff;
	243	buf[4] = 0xff;
a9e527e3	244	buf[5] = 0x10 \| scope; /* scope from broadcast address */
1da177e4 LT	245	buf[6] = 0x60; /* IPv6 signature */
1da177e4 LT	246	buf[7] = 0x1b;
a9e527e3 RM	247	buf[8] = broadcast[8]; /* P_Key */
a9e527e3 RM	248	buf[9] = broadcast[9];
1da177e4 LT	249	memcpy(buf + 10, addr->s6_addr + 6, 10);
1da177e4 LT	250	}
93ca3bb5 TT	251
	252	static inline int ipv6_ipgre_mc_map(const struct in6_addr *addr,
	253	const unsigned char broadcast, char buf)
	254	{
	255	if ((broadcast[0] \| broadcast[1] \| broadcast[2] \| broadcast[3]) != 0) {
	256	memcpy(buf, broadcast, 4);
	257	} else {
	258	/* v4mapped? */
	259	if ((addr->s6_addr32[0] \| addr->s6_addr32[1] \|
	260	(addr->s6_addr32[2] ^ htonl(0x0000ffff))) != 0)
	261	return -EINVAL;
	262	memcpy(buf, &addr->s6_addr32[3], 4);
	263	}
	264	return 0;
	265	}
	266
1da177e4	267	#endif