[mirror_ubuntu-bionic-kernel.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_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;

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

	int			state;

	__u32			flags;
	__u8			dad_probes;
	__u8			stable_privacy_retry;

	__u16			scope;

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

	struct delayed_work	dad_work;

	struct inet6_dev	*idev;
	struct rt6_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;
	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;
	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;		/* 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;
	atomic_t		refcnt;
	__u32			if_flags;
	int			dead;

	u8			rndid[8];
	struct timer_list	regen_timer;
	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;
	__u8			rs_probes;

	__u8			addr_gen_mode;
	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>
	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	33	enum {
c15b1cca	34	INET6_IFADDR_STATE_PREDAD,
e9d3e084 HX	35	INET6_IFADDR_STATE_DAD,
e9d3e084 HX	36	INET6_IFADDR_STATE_POSTDAD,
c15b1cca	37	INET6_IFADDR_STATE_ERRDAD,
e9d3e084 HX	38	INET6_IFADDR_STATE_DEAD,
	39	};
	40
fd2c3ef7	41	struct inet6_ifaddr {
1da177e4 LT	42	struct in6_addr addr;
1da177e4 LT	43	__u32 prefix_len;
8e8e676d	44
76f793e3	45	/* In seconds, relative to tstamp. Expiry is at tstamp + HZ * lft. */
1da177e4 LT	46	__u32 valid_lft;
1da177e4 LT	47	__u32 prefered_lft;
1da177e4 LT	48	atomic_t refcnt;
1da177e4 LT	49	spinlock_t lock;
e9d3e084 HX	50
e9d3e084 HX	51	int state;
1da177e4	52
479840ff	53	__u32 flags;
b7b1bfce	54	__u8 dad_probes;
5f40ef77	55	__u8 stable_privacy_retry;
1da177e4 LT	56
	57	__u16 scope;
	58
04ec5cfc RK	59	unsigned long cstamp; /* created timestamp */
	60	unsigned long tstamp; /* updated timestamp */
	61
c15b1cca	62	struct delayed_work dad_work;
1da177e4 LT	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	69
372e6c8f	70	struct list_head tmp_list;
1da177e4 LT	71	struct inet6_ifaddr *ifpub;
1da177e4 LT	72	int regen_count;
5d9efa7e	73
617fe29d DB	74	bool tokenized;
617fe29d DB	75
5c578aed	76	struct rcu_head rcu;
caeaba79	77	struct in6_addr peer_addr;
1da177e4 LT	78	};
1da177e4 LT	79
fd2c3ef7	80	struct ip6_sf_socklist {
1da177e4 LT	81	unsigned int sl_max;
	82	unsigned int sl_count;
	83	struct in6_addr sl_addr[0];
	84	};
	85
	86	#define IP6_SFLSIZE(count) (sizeof(struct ip6_sf_socklist) + \
	87	(count) * sizeof(struct in6_addr))
	88
	89	#define IP6_SFBLOCK 10 /* allocate this many at once */
	90
fd2c3ef7	91	struct ipv6_mc_socklist {
1da177e4 LT	92	struct in6_addr addr;
1da177e4 LT	93	int ifindex;
456b61bc	94	struct ipv6_mc_socklist __rcu *next;
5ab4a6c8	95	rwlock_t sflock;
1da177e4 LT	96	unsigned int sfmode; /* MCAST_{INCLUDE,EXCLUDE} */
1da177e4 LT	97	struct ip6_sf_socklist *sflist;
456b61bc	98	struct rcu_head rcu;
1da177e4 LT	99	};
1da177e4 LT	100
fd2c3ef7	101	struct ip6_sf_list {
1da177e4 LT	102	struct ip6_sf_list *sf_next;
	103	struct in6_addr sf_addr;
	104	unsigned long sf_count[2]; /* include/exclude counts */
	105	unsigned char sf_gsresp; /* include in g & s response? */
	106	unsigned char sf_oldin; /* change state */
	107	unsigned char sf_crcount; /* retrans. left to send */
	108	};
	109
	110	#define MAF_TIMER_RUNNING 0x01
	111	#define MAF_LAST_REPORTER 0x02
	112	#define MAF_LOADED 0x04
	113	#define MAF_NOREPORT 0x08
	114	#define MAF_GSQUERY 0x10
	115
fd2c3ef7	116	struct ifmcaddr6 {
1da177e4 LT	117	struct in6_addr mca_addr;
	118	struct inet6_dev *idev;
	119	struct ifmcaddr6 *next;
	120	struct ip6_sf_list *mca_sources;
	121	struct ip6_sf_list *mca_tomb;
	122	unsigned int mca_sfmode;
246f19d1	123	unsigned char mca_crcount;
1da177e4 LT	124	unsigned long mca_sfcount[2];
1da177e4 LT	125	struct timer_list mca_timer;
95c96174	126	unsigned int mca_flags;
1da177e4 LT	127	int mca_users;
	128	atomic_t mca_refcnt;
	129	spinlock_t mca_lock;
1da177e4 LT	130	unsigned long mca_cstamp;
	131	unsigned long mca_tstamp;
	132	};
	133
	134	/* Anycast stuff */
	135
fd2c3ef7	136	struct ipv6_ac_socklist {
1da177e4 LT	137	struct in6_addr acl_addr;
	138	int acl_ifindex;
	139	struct ipv6_ac_socklist *acl_next;
	140	};
	141
fd2c3ef7	142	struct ifacaddr6 {
1da177e4 LT	143	struct in6_addr aca_addr;
	144	struct inet6_dev *aca_idev;
	145	struct rt6_info *aca_rt;
	146	struct ifacaddr6 *aca_next;
	147	int aca_users;
	148	atomic_t aca_refcnt;
1da177e4 LT	149	unsigned long aca_cstamp;
	150	unsigned long aca_tstamp;
	151	};
	152
	153	#define IFA_HOST IPV6_ADDR_LOOPBACK
	154	#define IFA_LINK IPV6_ADDR_LINKLOCAL
	155	#define IFA_SITE IPV6_ADDR_SITELOCAL
1da177e4 LT	156
	157	struct ipv6_devstat {
	158	struct proc_dir_entry *proc_dir_entry;
a11d206d	159	DEFINE_SNMP_STAT(struct ipstats_mib, ipv6);
be281e55 ED	160	DEFINE_SNMP_STAT_ATOMIC(struct icmpv6_mib_device, icmpv6dev);
be281e55 ED	161	DEFINE_SNMP_STAT_ATOMIC(struct icmpv6msg_mib_device, icmpv6msgdev);
1da177e4 LT	162	};
1da177e4 LT	163
fd2c3ef7	164	struct inet6_dev {
502a2ffd	165	struct net_device *dev;
1da177e4	166
502a2ffd	167	struct list_head addr_list;
1da177e4 LT	168
	169	struct ifmcaddr6 *mc_list;
	170	struct ifmcaddr6 *mc_tomb;
6457d26b	171	spinlock_t mc_lock;
89225d1c DB	172
89225d1c DB	173	unsigned char mc_qrv; /* Query Robustness Variable */
1da177e4 LT	174	unsigned char mc_gq_running;
1da177e4 LT	175	unsigned char mc_ifc_count;
b173ee48	176	unsigned char mc_dad_count;
89225d1c DB	177
	178	unsigned long mc_v1_seen; /* Max time we stay in MLDv1 mode */
	179	unsigned long mc_qi; /* Query Interval */
	180	unsigned long mc_qri; /* Query Response Interval */
4e7e5cfe	181	unsigned long mc_maxdelay;
89225d1c	182
1da177e4 LT	183	struct timer_list mc_gq_timer; /* general query timer */
1da177e4 LT	184	struct timer_list mc_ifc_timer; /* interface change timer */
b173ee48	185	struct timer_list mc_dad_timer; /* dad complete mc timer */
1da177e4 LT	186
	187	struct ifacaddr6 *ac_list;
	188	rwlock_t lock;
	189	atomic_t refcnt;
	190	__u32 if_flags;
	191	int dead;
	192
1da177e4	193	u8 rndid[8];
1da177e4	194	struct timer_list regen_timer;
372e6c8f	195	struct list_head tempaddr_list;
1da177e4	196
f53adae4 DB	197	struct in6_addr token;
f53adae4 DB	198
1da177e4	199	struct neigh_parms *nd_parms;
1da177e4 LT	200	struct ipv6_devconf cnf;
1da177e4 LT	201	struct ipv6_devstat stats;
b7b1bfce HFS	202
	203	struct timer_list rs_timer;
	204	__u8 rs_probes;
	205
bc91b0f0	206	__u8 addr_gen_mode;
1da177e4	207	unsigned long tstamp; /* ipv6InterfaceTable update timestamp */
8814c4b5	208	struct rcu_head rcu;
1da177e4 LT	209	};
1da177e4 LT	210
b71d1d42	211	static inline void ipv6_eth_mc_map(const struct in6_addr addr, char buf)
1da177e4 LT	212	{
	213	/*
	214	* +-------+-------+-------+-------+-------+-------+
	215	* \| 33 \| 33 \| DST13 \| DST14 \| DST15 \| DST16 \|
	216	* +-------+-------+-------+-------+-------+-------+
	217	*/
	218
	219	buf[0]= 0x33;
	220	buf[1]= 0x33;
	221
	222	memcpy(buf + 2, &addr->s6_addr32[3], sizeof(__u32));
	223	}
	224
1da177e4 LT	225	static inline void ipv6_arcnet_mc_map(const struct in6_addr addr, char buf)
	226	{
	227	buf[0] = 0x00;
	228	}
	229
a9e527e3 RM	230	static inline void ipv6_ib_mc_map(const struct in6_addr *addr,
a9e527e3 RM	231	const unsigned char broadcast, char buf)
1da177e4	232	{
a9e527e3 RM	233	unsigned char scope = broadcast[5] & 0xF;
a9e527e3 RM	234
1da177e4 LT	235	buf[0] = 0; /* Reserved */
	236	buf[1] = 0xff; /* Multicast QPN */
	237	buf[2] = 0xff;
	238	buf[3] = 0xff;
	239	buf[4] = 0xff;
a9e527e3	240	buf[5] = 0x10 \| scope; /* scope from broadcast address */
1da177e4 LT	241	buf[6] = 0x60; /* IPv6 signature */
1da177e4 LT	242	buf[7] = 0x1b;
a9e527e3 RM	243	buf[8] = broadcast[8]; /* P_Key */
a9e527e3 RM	244	buf[9] = broadcast[9];
1da177e4 LT	245	memcpy(buf + 10, addr->s6_addr + 6, 10);
1da177e4 LT	246	}
93ca3bb5 TT	247
	248	static inline int ipv6_ipgre_mc_map(const struct in6_addr *addr,
	249	const unsigned char broadcast, char buf)
	250	{
	251	if ((broadcast[0] \| broadcast[1] \| broadcast[2] \| broadcast[3]) != 0) {
	252	memcpy(buf, broadcast, 4);
	253	} else {
	254	/* v4mapped? */
	255	if ((addr->s6_addr32[0] \| addr->s6_addr32[1] \|
	256	(addr->s6_addr32[2] ^ htonl(0x0000ffff))) != 0)
	257	return -EINVAL;
	258	memcpy(buf, &addr->s6_addr32[3], 4);
	259	}
	260	return 0;
	261	}
	262
1da177e4	263	#endif