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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_DAD,
35 INET6_IFADDR_STATE_POSTDAD,
36 INET6_IFADDR_STATE_UP,
37 INET6_IFADDR_STATE_DEAD,
38};
39
40struct inet6_ifaddr {
41 struct in6_addr addr;
42 __u32 prefix_len;
43
44 __u32 valid_lft;
45 __u32 prefered_lft;
46 atomic_t refcnt;
47 spinlock_t lock;
48 spinlock_t state_lock;
49
50 int state;
51
52 __u8 probes;
53 __u8 flags;
54
55 __u16 scope;
56
57 unsigned long cstamp; /* created timestamp */
58 unsigned long tstamp; /* updated timestamp */
59
60 struct timer_list timer;
61
62 struct inet6_dev *idev;
63 struct rt6_info *rt;
64
65 struct hlist_node addr_lst;
66 struct list_head if_list;
67
68#ifdef CONFIG_IPV6_PRIVACY
69 struct list_head tmp_list;
70 struct inet6_ifaddr *ifpub;
71 int regen_count;
72#endif
73 struct rcu_head rcu;
74};
75
76struct ip6_sf_socklist {
77 unsigned int sl_max;
78 unsigned int sl_count;
79 struct in6_addr sl_addr[0];
80};
81
82#define IP6_SFLSIZE(count) (sizeof(struct ip6_sf_socklist) + \
83 (count) * sizeof(struct in6_addr))
84
85#define IP6_SFBLOCK 10 /* allocate this many at once */
86
87struct ipv6_mc_socklist {
88 struct in6_addr addr;
89 int ifindex;
90 struct ipv6_mc_socklist __rcu *next;
91 rwlock_t sflock;
92 unsigned int sfmode; /* MCAST_{INCLUDE,EXCLUDE} */
93 struct ip6_sf_socklist *sflist;
94 struct rcu_head rcu;
95};
96
97struct ip6_sf_list {
98 struct ip6_sf_list *sf_next;
99 struct in6_addr sf_addr;
100 unsigned long sf_count[2]; /* include/exclude counts */
101 unsigned char sf_gsresp; /* include in g & s response? */
102 unsigned char sf_oldin; /* change state */
103 unsigned char sf_crcount; /* retrans. left to send */
104};
105
106#define MAF_TIMER_RUNNING 0x01
107#define MAF_LAST_REPORTER 0x02
108#define MAF_LOADED 0x04
109#define MAF_NOREPORT 0x08
110#define MAF_GSQUERY 0x10
111
112struct ifmcaddr6 {
113 struct in6_addr mca_addr;
114 struct inet6_dev *idev;
115 struct ifmcaddr6 *next;
116 struct ip6_sf_list *mca_sources;
117 struct ip6_sf_list *mca_tomb;
118 unsigned int mca_sfmode;
119 unsigned char mca_crcount;
120 unsigned long mca_sfcount[2];
121 struct timer_list mca_timer;
122 unsigned mca_flags;
123 int mca_users;
124 atomic_t mca_refcnt;
125 spinlock_t mca_lock;
126 unsigned long mca_cstamp;
127 unsigned long mca_tstamp;
128};
129
130/* Anycast stuff */
131
132struct ipv6_ac_socklist {
133 struct in6_addr acl_addr;
134 int acl_ifindex;
135 struct ipv6_ac_socklist *acl_next;
136};
137
138struct ifacaddr6 {
139 struct in6_addr aca_addr;
140 struct inet6_dev *aca_idev;
141 struct rt6_info *aca_rt;
142 struct ifacaddr6 *aca_next;
143 int aca_users;
144 atomic_t aca_refcnt;
145 spinlock_t aca_lock;
146 unsigned long aca_cstamp;
147 unsigned long aca_tstamp;
148};
149
150#define IFA_HOST IPV6_ADDR_LOOPBACK
151#define IFA_LINK IPV6_ADDR_LINKLOCAL
152#define IFA_SITE IPV6_ADDR_SITELOCAL
153
154struct ipv6_devstat {
155 struct proc_dir_entry *proc_dir_entry;
156 DEFINE_SNMP_STAT(struct ipstats_mib, ipv6);
157 DEFINE_SNMP_STAT_ATOMIC(struct icmpv6_mib_device, icmpv6dev);
158 DEFINE_SNMP_STAT_ATOMIC(struct icmpv6msg_mib_device, icmpv6msgdev);
159};
160
161struct inet6_dev {
162 struct net_device *dev;
163
164 struct list_head addr_list;
165
166 struct ifmcaddr6 *mc_list;
167 struct ifmcaddr6 *mc_tomb;
168 spinlock_t mc_lock;
169 unsigned char mc_qrv;
170 unsigned char mc_gq_running;
171 unsigned char mc_ifc_count;
172 unsigned long mc_v1_seen;
173 unsigned long mc_maxdelay;
174 struct timer_list mc_gq_timer; /* general query timer */
175 struct timer_list mc_ifc_timer; /* interface change timer */
176
177 struct ifacaddr6 *ac_list;
178 rwlock_t lock;
179 atomic_t refcnt;
180 __u32 if_flags;
181 int dead;
182
183#ifdef CONFIG_IPV6_PRIVACY
184 u8 rndid[8];
185 struct timer_list regen_timer;
186 struct list_head tempaddr_list;
187#endif
188
189 struct neigh_parms *nd_parms;
190 struct inet6_dev *next;
191 struct ipv6_devconf cnf;
192 struct ipv6_devstat stats;
193 unsigned long tstamp; /* ipv6InterfaceTable update timestamp */
194 struct rcu_head rcu;
195};
196
197static inline void ipv6_eth_mc_map(const struct in6_addr *addr, char *buf)
198{
199 /*
200 * +-------+-------+-------+-------+-------+-------+
201 * | 33 | 33 | DST13 | DST14 | DST15 | DST16 |
202 * +-------+-------+-------+-------+-------+-------+
203 */
204
205 buf[0]= 0x33;
206 buf[1]= 0x33;
207
208 memcpy(buf + 2, &addr->s6_addr32[3], sizeof(__u32));
209}
210
211static inline void ipv6_tr_mc_map(const struct in6_addr *addr, char *buf)
212{
213 /* All nodes FF01::1, FF02::1, FF02::1:FFxx:xxxx */
214
215 if (((addr->s6_addr[0] == 0xFF) &&
216 ((addr->s6_addr[1] == 0x01) || (addr->s6_addr[1] == 0x02)) &&
217 (addr->s6_addr16[1] == 0) &&
218 (addr->s6_addr32[1] == 0) &&
219 (addr->s6_addr32[2] == 0) &&
220 (addr->s6_addr16[6] == 0) &&
221 (addr->s6_addr[15] == 1)) ||
222 ((addr->s6_addr[0] == 0xFF) &&
223 (addr->s6_addr[1] == 0x02) &&
224 (addr->s6_addr16[1] == 0) &&
225 (addr->s6_addr32[1] == 0) &&
226 (addr->s6_addr16[4] == 0) &&
227 (addr->s6_addr[10] == 0) &&
228 (addr->s6_addr[11] == 1) &&
229 (addr->s6_addr[12] == 0xff)))
230 {
231 buf[0]=0xC0;
232 buf[1]=0x00;
233 buf[2]=0x01;
234 buf[3]=0x00;
235 buf[4]=0x00;
236 buf[5]=0x00;
237 /* All routers FF0x::2 */
238 } else if ((addr->s6_addr[0] ==0xff) &&
239 ((addr->s6_addr[1] & 0xF0) == 0) &&
240 (addr->s6_addr16[1] == 0) &&
241 (addr->s6_addr32[1] == 0) &&
242 (addr->s6_addr32[2] == 0) &&
243 (addr->s6_addr16[6] == 0) &&
244 (addr->s6_addr[15] == 2))
245 {
246 buf[0]=0xC0;
247 buf[1]=0x00;
248 buf[2]=0x02;
249 buf[3]=0x00;
250 buf[4]=0x00;
251 buf[5]=0x00;
252 } else {
253 unsigned char i ;
254
255 i = addr->s6_addr[15] & 7 ;
256 buf[0]=0xC0;
257 buf[1]=0x00;
258 buf[2]=0x00;
259 buf[3]=0x01 << i ;
260 buf[4]=0x00;
261 buf[5]=0x00;
262 }
263}
264
265static inline void ipv6_arcnet_mc_map(const struct in6_addr *addr, char *buf)
266{
267 buf[0] = 0x00;
268}
269
270static inline void ipv6_ib_mc_map(const struct in6_addr *addr,
271 const unsigned char *broadcast, char *buf)
272{
273 unsigned char scope = broadcast[5] & 0xF;
274
275 buf[0] = 0; /* Reserved */
276 buf[1] = 0xff; /* Multicast QPN */
277 buf[2] = 0xff;
278 buf[3] = 0xff;
279 buf[4] = 0xff;
280 buf[5] = 0x10 | scope; /* scope from broadcast address */
281 buf[6] = 0x60; /* IPv6 signature */
282 buf[7] = 0x1b;
283 buf[8] = broadcast[8]; /* P_Key */
284 buf[9] = broadcast[9];
285 memcpy(buf + 10, addr->s6_addr + 6, 10);
286}
287
288static inline int ipv6_ipgre_mc_map(const struct in6_addr *addr,
289 const unsigned char *broadcast, char *buf)
290{
291 if ((broadcast[0] | broadcast[1] | broadcast[2] | broadcast[3]) != 0) {
292 memcpy(buf, broadcast, 4);
293 } else {
294 /* v4mapped? */
295 if ((addr->s6_addr32[0] | addr->s6_addr32[1] |
296 (addr->s6_addr32[2] ^ htonl(0x0000ffff))) != 0)
297 return -EINVAL;
298 memcpy(buf, &addr->s6_addr32[3], 4);
299 }
300 return 0;
301}
302
303#endif
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#include <linux/refcount.h>
21
22/* inet6_dev.if_flags */
23
24#define IF_RA_OTHERCONF 0x80
25#define IF_RA_MANAGED 0x40
26#define IF_RA_RCVD 0x20
27#define IF_RS_SENT 0x10
28#define IF_READY 0x80000000
29
30/* prefix flags */
31#define IF_PREFIX_ONLINK 0x01
32#define IF_PREFIX_AUTOCONF 0x02
33
34enum {
35 INET6_IFADDR_STATE_PREDAD,
36 INET6_IFADDR_STATE_DAD,
37 INET6_IFADDR_STATE_POSTDAD,
38 INET6_IFADDR_STATE_ERRDAD,
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 refcount_t refcnt;
50 spinlock_t lock;
51
52 int state;
53
54 __u32 flags;
55 __u8 dad_probes;
56 __u8 stable_privacy_retry;
57
58 __u16 scope;
59 __u64 dad_nonce;
60
61 unsigned long cstamp; /* created timestamp */
62 unsigned long tstamp; /* updated timestamp */
63
64 struct delayed_work dad_work;
65
66 struct inet6_dev *idev;
67 struct rt6_info *rt;
68
69 struct hlist_node addr_lst;
70 struct list_head if_list;
71
72 struct list_head tmp_list;
73 struct inet6_ifaddr *ifpub;
74 int regen_count;
75
76 bool tokenized;
77
78 struct rcu_head rcu;
79 struct in6_addr peer_addr;
80};
81
82struct ip6_sf_socklist {
83 unsigned int sl_max;
84 unsigned int sl_count;
85 struct in6_addr sl_addr[0];
86};
87
88#define IP6_SFLSIZE(count) (sizeof(struct ip6_sf_socklist) + \
89 (count) * sizeof(struct in6_addr))
90
91#define IP6_SFBLOCK 10 /* allocate this many at once */
92
93struct ipv6_mc_socklist {
94 struct in6_addr addr;
95 int ifindex;
96 struct ipv6_mc_socklist __rcu *next;
97 rwlock_t sflock;
98 unsigned int sfmode; /* MCAST_{INCLUDE,EXCLUDE} */
99 struct ip6_sf_socklist *sflist;
100 struct rcu_head rcu;
101};
102
103struct ip6_sf_list {
104 struct ip6_sf_list *sf_next;
105 struct in6_addr sf_addr;
106 unsigned long sf_count[2]; /* include/exclude counts */
107 unsigned char sf_gsresp; /* include in g & s response? */
108 unsigned char sf_oldin; /* change state */
109 unsigned char sf_crcount; /* retrans. left to send */
110};
111
112#define MAF_TIMER_RUNNING 0x01
113#define MAF_LAST_REPORTER 0x02
114#define MAF_LOADED 0x04
115#define MAF_NOREPORT 0x08
116#define MAF_GSQUERY 0x10
117
118struct ifmcaddr6 {
119 struct in6_addr mca_addr;
120 struct inet6_dev *idev;
121 struct ifmcaddr6 *next;
122 struct ip6_sf_list *mca_sources;
123 struct ip6_sf_list *mca_tomb;
124 unsigned int mca_sfmode;
125 unsigned char mca_crcount;
126 unsigned long mca_sfcount[2];
127 struct timer_list mca_timer;
128 unsigned int mca_flags;
129 int mca_users;
130 refcount_t mca_refcnt;
131 spinlock_t mca_lock;
132 unsigned long mca_cstamp;
133 unsigned long mca_tstamp;
134};
135
136/* Anycast stuff */
137
138struct ipv6_ac_socklist {
139 struct in6_addr acl_addr;
140 int acl_ifindex;
141 struct ipv6_ac_socklist *acl_next;
142};
143
144struct ifacaddr6 {
145 struct in6_addr aca_addr;
146 struct inet6_dev *aca_idev;
147 struct rt6_info *aca_rt;
148 struct ifacaddr6 *aca_next;
149 int aca_users;
150 refcount_t aca_refcnt;
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 refcount_t refcnt;
192 __u32 if_flags;
193 int dead;
194
195 u32 desync_factor;
196 u8 rndid[8];
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 __s32 rs_interval; /* in jiffies */
207 __u8 rs_probes;
208
209 unsigned long tstamp; /* ipv6InterfaceTable update timestamp */
210 struct rcu_head rcu;
211};
212
213static inline void ipv6_eth_mc_map(const struct in6_addr *addr, char *buf)
214{
215 /*
216 * +-------+-------+-------+-------+-------+-------+
217 * | 33 | 33 | DST13 | DST14 | DST15 | DST16 |
218 * +-------+-------+-------+-------+-------+-------+
219 */
220
221 buf[0]= 0x33;
222 buf[1]= 0x33;
223
224 memcpy(buf + 2, &addr->s6_addr32[3], sizeof(__u32));
225}
226
227static inline void ipv6_arcnet_mc_map(const struct in6_addr *addr, char *buf)
228{
229 buf[0] = 0x00;
230}
231
232static inline void ipv6_ib_mc_map(const struct in6_addr *addr,
233 const unsigned char *broadcast, char *buf)
234{
235 unsigned char scope = broadcast[5] & 0xF;
236
237 buf[0] = 0; /* Reserved */
238 buf[1] = 0xff; /* Multicast QPN */
239 buf[2] = 0xff;
240 buf[3] = 0xff;
241 buf[4] = 0xff;
242 buf[5] = 0x10 | scope; /* scope from broadcast address */
243 buf[6] = 0x60; /* IPv6 signature */
244 buf[7] = 0x1b;
245 buf[8] = broadcast[8]; /* P_Key */
246 buf[9] = broadcast[9];
247 memcpy(buf + 10, addr->s6_addr + 6, 10);
248}
249
250static inline int ipv6_ipgre_mc_map(const struct in6_addr *addr,
251 const unsigned char *broadcast, char *buf)
252{
253 if ((broadcast[0] | broadcast[1] | broadcast[2] | broadcast[3]) != 0) {
254 memcpy(buf, broadcast, 4);
255 } else {
256 /* v4mapped? */
257 if ((addr->s6_addr32[0] | addr->s6_addr32[1] |
258 (addr->s6_addr32[2] ^ htonl(0x0000ffff))) != 0)
259 return -EINVAL;
260 memcpy(buf, &addr->s6_addr32[3], 4);
261 }
262 return 0;
263}
264
265#endif