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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_UP,
39 INET6_IFADDR_STATE_DEAD,
40};
41
42struct inet6_ifaddr {
43 struct in6_addr addr;
44 __u32 prefix_len;
45
46 /* In seconds, relative to tstamp. Expiry is at tstamp + HZ * lft. */
47 __u32 valid_lft;
48 __u32 prefered_lft;
49 atomic_t refcnt;
50 spinlock_t lock;
51 spinlock_t state_lock;
52
53 int state;
54
55 __u32 flags;
56 __u8 dad_probes;
57
58 __u16 scope;
59
60 unsigned long cstamp; /* created timestamp */
61 unsigned long tstamp; /* updated timestamp */
62
63 struct delayed_work dad_work;
64
65 struct inet6_dev *idev;
66 struct rt6_info *rt;
67
68 struct hlist_node addr_lst;
69 struct list_head if_list;
70
71 struct list_head tmp_list;
72 struct inet6_ifaddr *ifpub;
73 int regen_count;
74
75 bool tokenized;
76
77 struct rcu_head rcu;
78 struct in6_addr peer_addr;
79};
80
81struct ip6_sf_socklist {
82 unsigned int sl_max;
83 unsigned int sl_count;
84 struct in6_addr sl_addr[0];
85};
86
87#define IP6_SFLSIZE(count) (sizeof(struct ip6_sf_socklist) + \
88 (count) * sizeof(struct in6_addr))
89
90#define IP6_SFBLOCK 10 /* allocate this many at once */
91
92struct ipv6_mc_socklist {
93 struct in6_addr addr;
94 int ifindex;
95 struct ipv6_mc_socklist __rcu *next;
96 rwlock_t sflock;
97 unsigned int sfmode; /* MCAST_{INCLUDE,EXCLUDE} */
98 struct ip6_sf_socklist *sflist;
99 struct rcu_head rcu;
100};
101
102struct ip6_sf_list {
103 struct ip6_sf_list *sf_next;
104 struct in6_addr sf_addr;
105 unsigned long sf_count[2]; /* include/exclude counts */
106 unsigned char sf_gsresp; /* include in g & s response? */
107 unsigned char sf_oldin; /* change state */
108 unsigned char sf_crcount; /* retrans. left to send */
109};
110
111#define MAF_TIMER_RUNNING 0x01
112#define MAF_LAST_REPORTER 0x02
113#define MAF_LOADED 0x04
114#define MAF_NOREPORT 0x08
115#define MAF_GSQUERY 0x10
116
117struct ifmcaddr6 {
118 struct in6_addr mca_addr;
119 struct inet6_dev *idev;
120 struct ifmcaddr6 *next;
121 struct ip6_sf_list *mca_sources;
122 struct ip6_sf_list *mca_tomb;
123 unsigned int mca_sfmode;
124 unsigned char mca_crcount;
125 unsigned long mca_sfcount[2];
126 struct timer_list mca_timer;
127 unsigned int mca_flags;
128 int mca_users;
129 atomic_t mca_refcnt;
130 spinlock_t mca_lock;
131 unsigned long mca_cstamp;
132 unsigned long mca_tstamp;
133};
134
135/* Anycast stuff */
136
137struct ipv6_ac_socklist {
138 struct in6_addr acl_addr;
139 int acl_ifindex;
140 struct ipv6_ac_socklist *acl_next;
141};
142
143struct ifacaddr6 {
144 struct in6_addr aca_addr;
145 struct inet6_dev *aca_idev;
146 struct rt6_info *aca_rt;
147 struct ifacaddr6 *aca_next;
148 int aca_users;
149 atomic_t aca_refcnt;
150 spinlock_t aca_lock;
151 unsigned long aca_cstamp;
152 unsigned long aca_tstamp;
153};
154
155#define IFA_HOST IPV6_ADDR_LOOPBACK
156#define IFA_LINK IPV6_ADDR_LINKLOCAL
157#define IFA_SITE IPV6_ADDR_SITELOCAL
158
159struct ipv6_devstat {
160 struct proc_dir_entry *proc_dir_entry;
161 DEFINE_SNMP_STAT(struct ipstats_mib, ipv6);
162 DEFINE_SNMP_STAT_ATOMIC(struct icmpv6_mib_device, icmpv6dev);
163 DEFINE_SNMP_STAT_ATOMIC(struct icmpv6msg_mib_device, icmpv6msgdev);
164};
165
166struct inet6_dev {
167 struct net_device *dev;
168
169 struct list_head addr_list;
170
171 struct ifmcaddr6 *mc_list;
172 struct ifmcaddr6 *mc_tomb;
173 spinlock_t mc_lock;
174
175 unsigned char mc_qrv; /* Query Robustness Variable */
176 unsigned char mc_gq_running;
177 unsigned char mc_ifc_count;
178 unsigned char mc_dad_count;
179
180 unsigned long mc_v1_seen; /* Max time we stay in MLDv1 mode */
181 unsigned long mc_qi; /* Query Interval */
182 unsigned long mc_qri; /* Query Response Interval */
183 unsigned long mc_maxdelay;
184
185 struct timer_list mc_gq_timer; /* general query timer */
186 struct timer_list mc_ifc_timer; /* interface change timer */
187 struct timer_list mc_dad_timer; /* dad complete mc timer */
188
189 struct ifacaddr6 *ac_list;
190 rwlock_t lock;
191 atomic_t refcnt;
192 __u32 if_flags;
193 int dead;
194
195 u8 rndid[8];
196 struct timer_list regen_timer;
197 struct list_head tempaddr_list;
198
199 struct in6_addr token;
200
201 struct neigh_parms *nd_parms;
202 struct ipv6_devconf cnf;
203 struct ipv6_devstat stats;
204
205 struct timer_list rs_timer;
206 __u8 rs_probes;
207
208 unsigned long tstamp; /* ipv6InterfaceTable update timestamp */
209 struct rcu_head rcu;
210};
211
212static inline void ipv6_eth_mc_map(const struct in6_addr *addr, char *buf)
213{
214 /*
215 * +-------+-------+-------+-------+-------+-------+
216 * | 33 | 33 | DST13 | DST14 | DST15 | DST16 |
217 * +-------+-------+-------+-------+-------+-------+
218 */
219
220 buf[0]= 0x33;
221 buf[1]= 0x33;
222
223 memcpy(buf + 2, &addr->s6_addr32[3], sizeof(__u32));
224}
225
226static inline void ipv6_arcnet_mc_map(const struct in6_addr *addr, char *buf)
227{
228 buf[0] = 0x00;
229}
230
231static inline void ipv6_ib_mc_map(const struct in6_addr *addr,
232 const unsigned char *broadcast, char *buf)
233{
234 unsigned char scope = broadcast[5] & 0xF;
235
236 buf[0] = 0; /* Reserved */
237 buf[1] = 0xff; /* Multicast QPN */
238 buf[2] = 0xff;
239 buf[3] = 0xff;
240 buf[4] = 0xff;
241 buf[5] = 0x10 | scope; /* scope from broadcast address */
242 buf[6] = 0x60; /* IPv6 signature */
243 buf[7] = 0x1b;
244 buf[8] = broadcast[8]; /* P_Key */
245 buf[9] = broadcast[9];
246 memcpy(buf + 10, addr->s6_addr + 6, 10);
247}
248
249static inline int ipv6_ipgre_mc_map(const struct in6_addr *addr,
250 const unsigned char *broadcast, char *buf)
251{
252 if ((broadcast[0] | broadcast[1] | broadcast[2] | broadcast[3]) != 0) {
253 memcpy(buf, broadcast, 4);
254 } else {
255 /* v4mapped? */
256 if ((addr->s6_addr32[0] | addr->s6_addr32[1] |
257 (addr->s6_addr32[2] ^ htonl(0x0000ffff))) != 0)
258 return -EINVAL;
259 memcpy(buf, &addr->s6_addr32[3], 4);
260 }
261 return 0;
262}
263
264#endif
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