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v4.6
 
  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
 27#define IF_READY	0x80000000
 28
 29/* prefix flags */
 30#define IF_PREFIX_ONLINK	0x01
 31#define IF_PREFIX_AUTOCONF	0x02
 32
 33enum {
 34	INET6_IFADDR_STATE_PREDAD,
 35	INET6_IFADDR_STATE_DAD,
 36	INET6_IFADDR_STATE_POSTDAD,
 37	INET6_IFADDR_STATE_ERRDAD,
 38	INET6_IFADDR_STATE_DEAD,
 39};
 40
 41struct inet6_ifaddr {
 42	struct in6_addr		addr;
 43	__u32			prefix_len;
 
 44
 45	/* In seconds, relative to tstamp. Expiry is at tstamp + HZ * lft. */
 46	__u32			valid_lft;
 47	__u32			prefered_lft;
 48	atomic_t		refcnt;
 49	spinlock_t		lock;
 50
 51	int			state;
 52
 53	__u32			flags;
 54	__u8			dad_probes;
 55	__u8			stable_privacy_retry;
 56
 57	__u16			scope;
 
 58
 59	unsigned long		cstamp;	/* created timestamp */
 60	unsigned long		tstamp; /* updated timestamp */
 61
 62	struct delayed_work	dad_work;
 63
 64	struct inet6_dev	*idev;
 65	struct rt6_info		*rt;
 66
 67	struct hlist_node	addr_lst;
 68	struct list_head	if_list;
 69
 70	struct list_head	tmp_list;
 71	struct inet6_ifaddr	*ifpub;
 72	int			regen_count;
 73
 74	bool			tokenized;
 75
 76	struct rcu_head		rcu;
 77	struct in6_addr		peer_addr;
 78};
 79
 80struct ip6_sf_socklist {
 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
 91struct ipv6_mc_socklist {
 92	struct in6_addr		addr;
 93	int			ifindex;
 
 94	struct ipv6_mc_socklist __rcu *next;
 95	rwlock_t		sflock;
 96	unsigned int		sfmode;		/* MCAST_{INCLUDE,EXCLUDE} */
 97	struct ip6_sf_socklist	*sflist;
 98	struct rcu_head		rcu;
 99};
100
101struct ip6_sf_list {
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
116struct ifmcaddr6 {
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;
123	unsigned char		mca_crcount;
124	unsigned long		mca_sfcount[2];
125	struct timer_list	mca_timer;
126	unsigned int		mca_flags;
127	int			mca_users;
128	atomic_t		mca_refcnt;
129	spinlock_t		mca_lock;
130	unsigned long		mca_cstamp;
131	unsigned long		mca_tstamp;
132};
133
134/* Anycast stuff */
135
136struct ipv6_ac_socklist {
137	struct in6_addr		acl_addr;
138	int			acl_ifindex;
139	struct ipv6_ac_socklist *acl_next;
140};
141
142struct ifacaddr6 {
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;
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
156
157struct ipv6_devstat {
158	struct proc_dir_entry	*proc_dir_entry;
159	DEFINE_SNMP_STAT(struct ipstats_mib, ipv6);
160	DEFINE_SNMP_STAT_ATOMIC(struct icmpv6_mib_device, icmpv6dev);
161	DEFINE_SNMP_STAT_ATOMIC(struct icmpv6msg_mib_device, icmpv6msgdev);
162};
163
164struct inet6_dev {
165	struct net_device	*dev;
166
167	struct list_head	addr_list;
168
169	struct ifmcaddr6	*mc_list;
170	struct ifmcaddr6	*mc_tomb;
171	spinlock_t		mc_lock;
172
173	unsigned char		mc_qrv;		/* Query Robustness Variable */
174	unsigned char		mc_gq_running;
175	unsigned char		mc_ifc_count;
176	unsigned char		mc_dad_count;
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 */
181	unsigned long		mc_maxdelay;
182
183	struct timer_list	mc_gq_timer;	/* general query timer */
184	struct timer_list	mc_ifc_timer;	/* interface change timer */
185	struct timer_list	mc_dad_timer;	/* dad complete mc timer */
186
187	struct ifacaddr6	*ac_list;
188	rwlock_t		lock;
189	atomic_t		refcnt;
190	__u32			if_flags;
191	int			dead;
192
 
193	u8			rndid[8];
194	struct timer_list	regen_timer;
195	struct list_head	tempaddr_list;
196
197	struct in6_addr		token;
198
199	struct neigh_parms	*nd_parms;
200	struct ipv6_devconf	cnf;
201	struct ipv6_devstat	stats;
202
203	struct timer_list	rs_timer;
 
204	__u8			rs_probes;
205
206	__u8			addr_gen_mode;
207	unsigned long		tstamp; /* ipv6InterfaceTable update timestamp */
208	struct rcu_head		rcu;
209};
210
211static inline void ipv6_eth_mc_map(const struct in6_addr *addr, char *buf)
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
225static inline void ipv6_arcnet_mc_map(const struct in6_addr *addr, char *buf)
226{
227	buf[0] = 0x00;
228}
229
230static inline void ipv6_ib_mc_map(const struct in6_addr *addr,
231				  const unsigned char *broadcast, char *buf)
232{
233	unsigned char scope = broadcast[5] & 0xF;
234
235	buf[0]  = 0;		/* Reserved */
236	buf[1]  = 0xff;		/* Multicast QPN */
237	buf[2]  = 0xff;
238	buf[3]  = 0xff;
239	buf[4]  = 0xff;
240	buf[5]  = 0x10 | scope;	/* scope from broadcast address */
241	buf[6]  = 0x60;		/* IPv6 signature */
242	buf[7]  = 0x1b;
243	buf[8]  = broadcast[8];	/* P_Key */
244	buf[9]  = broadcast[9];
245	memcpy(buf + 10, addr->s6_addr + 6, 10);
246}
247
248static 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
263#endif
v5.4
  1/* SPDX-License-Identifier: GPL-2.0-or-later */
  2/*
  3 *	inet6 interface/address list definitions
  4 *	Linux INET6 implementation 
  5 *
  6 *	Authors:
  7 *	Pedro Roque		<roque@di.fc.ul.pt>	
 
 
 
 
 
 
  8 */
  9
 10#ifndef _NET_IF_INET6_H
 11#define _NET_IF_INET6_H
 12
 13#include <net/snmp.h>
 14#include <linux/ipv6.h>
 15#include <linux/refcount.h>
 16
 17/* inet6_dev.if_flags */
 18
 19#define IF_RA_OTHERCONF	0x80
 20#define IF_RA_MANAGED	0x40
 21#define IF_RA_RCVD	0x20
 22#define IF_RS_SENT	0x10
 23#define IF_READY	0x80000000
 24
 25/* prefix flags */
 26#define IF_PREFIX_ONLINK	0x01
 27#define IF_PREFIX_AUTOCONF	0x02
 28
 29enum {
 30	INET6_IFADDR_STATE_PREDAD,
 31	INET6_IFADDR_STATE_DAD,
 32	INET6_IFADDR_STATE_POSTDAD,
 33	INET6_IFADDR_STATE_ERRDAD,
 34	INET6_IFADDR_STATE_DEAD,
 35};
 36
 37struct inet6_ifaddr {
 38	struct in6_addr		addr;
 39	__u32			prefix_len;
 40	__u32			rt_priority;
 41
 42	/* In seconds, relative to tstamp. Expiry is at tstamp + HZ * lft. */
 43	__u32			valid_lft;
 44	__u32			prefered_lft;
 45	refcount_t		refcnt;
 46	spinlock_t		lock;
 47
 48	int			state;
 49
 50	__u32			flags;
 51	__u8			dad_probes;
 52	__u8			stable_privacy_retry;
 53
 54	__u16			scope;
 55	__u64			dad_nonce;
 56
 57	unsigned long		cstamp;	/* created timestamp */
 58	unsigned long		tstamp; /* updated timestamp */
 59
 60	struct delayed_work	dad_work;
 61
 62	struct inet6_dev	*idev;
 63	struct fib6_info	*rt;
 64
 65	struct hlist_node	addr_lst;
 66	struct list_head	if_list;
 67
 68	struct list_head	tmp_list;
 69	struct inet6_ifaddr	*ifpub;
 70	int			regen_count;
 71
 72	bool			tokenized;
 73
 74	struct rcu_head		rcu;
 75	struct in6_addr		peer_addr;
 76};
 77
 78struct ip6_sf_socklist {
 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
 89struct ipv6_mc_socklist {
 90	struct in6_addr		addr;
 91	int			ifindex;
 92	unsigned int		sfmode;		/* MCAST_{INCLUDE,EXCLUDE} */
 93	struct ipv6_mc_socklist __rcu *next;
 94	rwlock_t		sflock;
 
 95	struct ip6_sf_socklist	*sflist;
 96	struct rcu_head		rcu;
 97};
 98
 99struct ip6_sf_list {
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
114struct ifmcaddr6 {
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;
121	unsigned char		mca_crcount;
122	unsigned long		mca_sfcount[2];
123	struct timer_list	mca_timer;
124	unsigned int		mca_flags;
125	int			mca_users;
126	refcount_t		mca_refcnt;
127	spinlock_t		mca_lock;
128	unsigned long		mca_cstamp;
129	unsigned long		mca_tstamp;
130};
131
132/* Anycast stuff */
133
134struct ipv6_ac_socklist {
135	struct in6_addr		acl_addr;
136	int			acl_ifindex;
137	struct ipv6_ac_socklist *acl_next;
138};
139
140struct ifacaddr6 {
141	struct in6_addr		aca_addr;
142	struct fib6_info	*aca_rt;
 
143	struct ifacaddr6	*aca_next;
144	struct hlist_node	aca_addr_lst;
145	int			aca_users;
146	refcount_t		aca_refcnt;
147	unsigned long		aca_cstamp;
148	unsigned long		aca_tstamp;
149	struct rcu_head		rcu;
150};
151
152#define	IFA_HOST	IPV6_ADDR_LOOPBACK
153#define	IFA_LINK	IPV6_ADDR_LINKLOCAL
154#define	IFA_SITE	IPV6_ADDR_SITELOCAL
155
156struct ipv6_devstat {
157	struct proc_dir_entry	*proc_dir_entry;
158	DEFINE_SNMP_STAT(struct ipstats_mib, ipv6);
159	DEFINE_SNMP_STAT_ATOMIC(struct icmpv6_mib_device, icmpv6dev);
160	DEFINE_SNMP_STAT_ATOMIC(struct icmpv6msg_mib_device, icmpv6msgdev);
161};
162
163struct inet6_dev {
164	struct net_device	*dev;
165
166	struct list_head	addr_list;
167
168	struct ifmcaddr6	*mc_list;
169	struct ifmcaddr6	*mc_tomb;
170	spinlock_t		mc_lock;
171
172	unsigned char		mc_qrv;		/* Query Robustness Variable */
173	unsigned char		mc_gq_running;
174	unsigned char		mc_ifc_count;
175	unsigned char		mc_dad_count;
176
177	unsigned long		mc_v1_seen;	/* Max time we stay in MLDv1 mode */
178	unsigned long		mc_qi;		/* Query Interval */
179	unsigned long		mc_qri;		/* Query Response Interval */
180	unsigned long		mc_maxdelay;
181
182	struct timer_list	mc_gq_timer;	/* general query timer */
183	struct timer_list	mc_ifc_timer;	/* interface change timer */
184	struct timer_list	mc_dad_timer;	/* dad complete mc timer */
185
186	struct ifacaddr6	*ac_list;
187	rwlock_t		lock;
188	refcount_t		refcnt;
189	__u32			if_flags;
190	int			dead;
191
192	u32			desync_factor;
193	u8			rndid[8];
 
194	struct list_head	tempaddr_list;
195
196	struct in6_addr		token;
197
198	struct neigh_parms	*nd_parms;
199	struct ipv6_devconf	cnf;
200	struct ipv6_devstat	stats;
201
202	struct timer_list	rs_timer;
203	__s32			rs_interval;	/* in jiffies */
204	__u8			rs_probes;
205
 
206	unsigned long		tstamp; /* ipv6InterfaceTable update timestamp */
207	struct rcu_head		rcu;
208};
209
210static inline void ipv6_eth_mc_map(const struct in6_addr *addr, char *buf)
211{
212	/*
213	 *	+-------+-------+-------+-------+-------+-------+
214	 *      |   33  |   33  | DST13 | DST14 | DST15 | DST16 |
215	 *      +-------+-------+-------+-------+-------+-------+
216	 */
217
218	buf[0]= 0x33;
219	buf[1]= 0x33;
220
221	memcpy(buf + 2, &addr->s6_addr32[3], sizeof(__u32));
222}
223
224static inline void ipv6_arcnet_mc_map(const struct in6_addr *addr, char *buf)
225{
226	buf[0] = 0x00;
227}
228
229static inline void ipv6_ib_mc_map(const struct in6_addr *addr,
230				  const unsigned char *broadcast, char *buf)
231{
232	unsigned char scope = broadcast[5] & 0xF;
233
234	buf[0]  = 0;		/* Reserved */
235	buf[1]  = 0xff;		/* Multicast QPN */
236	buf[2]  = 0xff;
237	buf[3]  = 0xff;
238	buf[4]  = 0xff;
239	buf[5]  = 0x10 | scope;	/* scope from broadcast address */
240	buf[6]  = 0x60;		/* IPv6 signature */
241	buf[7]  = 0x1b;
242	buf[8]  = broadcast[8];	/* P_Key */
243	buf[9]  = broadcast[9];
244	memcpy(buf + 10, addr->s6_addr + 6, 10);
245}
246
247static inline int ipv6_ipgre_mc_map(const struct in6_addr *addr,
248				    const unsigned char *broadcast, char *buf)
249{
250	if ((broadcast[0] | broadcast[1] | broadcast[2] | broadcast[3]) != 0) {
251		memcpy(buf, broadcast, 4);
252	} else {
253		/* v4mapped? */
254		if ((addr->s6_addr32[0] | addr->s6_addr32[1] |
255		     (addr->s6_addr32[2] ^ htonl(0x0000ffff))) != 0)
256			return -EINVAL;
257		memcpy(buf, &addr->s6_addr32[3], 4);
258	}
259	return 0;
260}
261
262#endif