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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_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
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 rcu_head rcu;
82 struct in6_addr sl_addr[];
83};
84
85#define IP6_SFLSIZE(count) (sizeof(struct ip6_sf_socklist) + \
86 (count) * sizeof(struct in6_addr))
87
88#define IP6_SFBLOCK 10 /* allocate this many at once */
89
90struct ipv6_mc_socklist {
91 struct in6_addr addr;
92 int ifindex;
93 unsigned int sfmode; /* MCAST_{INCLUDE,EXCLUDE} */
94 struct ipv6_mc_socklist __rcu *next;
95 struct ip6_sf_socklist __rcu *sflist;
96 struct rcu_head rcu;
97};
98
99struct ip6_sf_list {
100 struct ip6_sf_list __rcu *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 struct rcu_head rcu;
107};
108
109#define MAF_TIMER_RUNNING 0x01
110#define MAF_LAST_REPORTER 0x02
111#define MAF_LOADED 0x04
112#define MAF_NOREPORT 0x08
113#define MAF_GSQUERY 0x10
114
115struct ifmcaddr6 {
116 struct in6_addr mca_addr;
117 struct inet6_dev *idev;
118 struct ifmcaddr6 __rcu *next;
119 struct ip6_sf_list __rcu *mca_sources;
120 struct ip6_sf_list __rcu *mca_tomb;
121 unsigned int mca_sfmode;
122 unsigned char mca_crcount;
123 unsigned long mca_sfcount[2];
124 struct delayed_work mca_work;
125 unsigned int mca_flags;
126 int mca_users;
127 refcount_t mca_refcnt;
128 unsigned long mca_cstamp;
129 unsigned long mca_tstamp;
130 struct rcu_head rcu;
131};
132
133/* Anycast stuff */
134
135struct ipv6_ac_socklist {
136 struct in6_addr acl_addr;
137 int acl_ifindex;
138 struct ipv6_ac_socklist *acl_next;
139};
140
141struct ifacaddr6 {
142 struct in6_addr aca_addr;
143 struct fib6_info *aca_rt;
144 struct ifacaddr6 *aca_next;
145 struct hlist_node aca_addr_lst;
146 int aca_users;
147 refcount_t aca_refcnt;
148 unsigned long aca_cstamp;
149 unsigned long aca_tstamp;
150 struct rcu_head rcu;
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 __rcu *mc_list;
170 struct ifmcaddr6 __rcu *mc_tomb;
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 delayed_work mc_gq_work; /* general query work */
183 struct delayed_work mc_ifc_work; /* interface change work */
184 struct delayed_work mc_dad_work; /* dad complete mc work */
185 struct delayed_work mc_query_work; /* mld query work */
186 struct delayed_work mc_report_work; /* mld report work */
187
188 struct sk_buff_head mc_query_queue; /* mld query queue */
189 struct sk_buff_head mc_report_queue; /* mld report queue */
190
191 spinlock_t mc_query_lock; /* mld query queue lock */
192 spinlock_t mc_report_lock; /* mld query report lock */
193 struct mutex mc_lock; /* mld global lock */
194
195 struct ifacaddr6 *ac_list;
196 rwlock_t lock;
197 refcount_t refcnt;
198 __u32 if_flags;
199 int dead;
200
201 u32 desync_factor;
202 struct list_head tempaddr_list;
203
204 struct in6_addr token;
205
206 struct neigh_parms *nd_parms;
207 struct ipv6_devconf cnf;
208 struct ipv6_devstat stats;
209
210 struct timer_list rs_timer;
211 __s32 rs_interval; /* in jiffies */
212 __u8 rs_probes;
213
214 unsigned long tstamp; /* ipv6InterfaceTable update timestamp */
215 struct rcu_head rcu;
216};
217
218static inline void ipv6_eth_mc_map(const struct in6_addr *addr, char *buf)
219{
220 /*
221 * +-------+-------+-------+-------+-------+-------+
222 * | 33 | 33 | DST13 | DST14 | DST15 | DST16 |
223 * +-------+-------+-------+-------+-------+-------+
224 */
225
226 buf[0]= 0x33;
227 buf[1]= 0x33;
228
229 memcpy(buf + 2, &addr->s6_addr32[3], sizeof(__u32));
230}
231
232static inline void ipv6_arcnet_mc_map(const struct in6_addr *addr, char *buf)
233{
234 buf[0] = 0x00;
235}
236
237static inline void ipv6_ib_mc_map(const struct in6_addr *addr,
238 const unsigned char *broadcast, char *buf)
239{
240 unsigned char scope = broadcast[5] & 0xF;
241
242 buf[0] = 0; /* Reserved */
243 buf[1] = 0xff; /* Multicast QPN */
244 buf[2] = 0xff;
245 buf[3] = 0xff;
246 buf[4] = 0xff;
247 buf[5] = 0x10 | scope; /* scope from broadcast address */
248 buf[6] = 0x60; /* IPv6 signature */
249 buf[7] = 0x1b;
250 buf[8] = broadcast[8]; /* P_Key */
251 buf[9] = broadcast[9];
252 memcpy(buf + 10, addr->s6_addr + 6, 10);
253}
254
255static inline int ipv6_ipgre_mc_map(const struct in6_addr *addr,
256 const unsigned char *broadcast, char *buf)
257{
258 if ((broadcast[0] | broadcast[1] | broadcast[2] | broadcast[3]) != 0) {
259 memcpy(buf, broadcast, 4);
260 } else {
261 /* v4mapped? */
262 if ((addr->s6_addr32[0] | addr->s6_addr32[1] |
263 (addr->s6_addr32[2] ^ htonl(0x0000ffff))) != 0)
264 return -EINVAL;
265 memcpy(buf, &addr->s6_addr32[3], 4);
266 }
267 return 0;
268}
269
270#endif