summaryrefslogtreecommitdiff
path: root/include/net/if_inet6.h
blob: 736b5fb9547493efc757c9e47318665a2bf16069 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
/*
 *	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;
	
	/* In seconds, relative to tstamp. Expiry is at tstamp + HZ * lft. */
	__u32			valid_lft;
	__u32			prefered_lft;
	atomic_t		refcnt;
	spinlock_t		lock;
	spinlock_t		state_lock;

	int			state;

	__u8			dad_probes;
	__u8			flags;

	__u16			scope;

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

	struct timer_list	dad_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
	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;
	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;
	int			valid_ll_addr_cnt;

	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 char		mc_dad_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 timer_list	mc_dad_timer;	/* dad complete mc 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 in6_addr		token;

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

	struct timer_list	rs_timer;
	__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