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1da177e4 LT |
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 | |
3c21edbd | 27 | #define IF_READY 0x80000000 |
1da177e4 LT |
28 | |
29 | /* prefix flags */ | |
30 | #define IF_PREFIX_ONLINK 0x01 | |
31 | #define IF_PREFIX_AUTOCONF 0x02 | |
32 | ||
e9d3e084 HX |
33 | enum { |
34 | INET6_IFADDR_STATE_DAD, | |
35 | INET6_IFADDR_STATE_POSTDAD, | |
36 | INET6_IFADDR_STATE_UP, | |
37 | INET6_IFADDR_STATE_DEAD, | |
38 | }; | |
39 | ||
fd2c3ef7 | 40 | struct inet6_ifaddr { |
1da177e4 LT |
41 | struct in6_addr addr; |
42 | __u32 prefix_len; | |
43 | ||
76f793e3 | 44 | /* In seconds, relative to tstamp. Expiry is at tstamp + HZ * lft. */ |
1da177e4 LT |
45 | __u32 valid_lft; |
46 | __u32 prefered_lft; | |
1da177e4 LT |
47 | atomic_t refcnt; |
48 | spinlock_t lock; | |
e9d3e084 HX |
49 | spinlock_t state_lock; |
50 | ||
51 | int state; | |
1da177e4 LT |
52 | |
53 | __u8 probes; | |
54 | __u8 flags; | |
55 | ||
56 | __u16 scope; | |
57 | ||
04ec5cfc RK |
58 | unsigned long cstamp; /* created timestamp */ |
59 | unsigned long tstamp; /* updated timestamp */ | |
60 | ||
1da177e4 LT |
61 | struct timer_list timer; |
62 | ||
63 | struct inet6_dev *idev; | |
64 | struct rt6_info *rt; | |
65 | ||
c2e21293 | 66 | struct hlist_node addr_lst; |
502a2ffd | 67 | struct list_head if_list; |
1da177e4 LT |
68 | |
69 | #ifdef CONFIG_IPV6_PRIVACY | |
372e6c8f | 70 | struct list_head tmp_list; |
1da177e4 LT |
71 | struct inet6_ifaddr *ifpub; |
72 | int regen_count; | |
73 | #endif | |
5c578aed | 74 | struct rcu_head rcu; |
1da177e4 LT |
75 | }; |
76 | ||
fd2c3ef7 | 77 | struct ip6_sf_socklist { |
1da177e4 LT |
78 | unsigned int sl_max; |
79 | unsigned int sl_count; | |
80 | struct in6_addr sl_addr[0]; | |
81 | }; | |
82 | ||
83 | #define IP6_SFLSIZE(count) (sizeof(struct ip6_sf_socklist) + \ | |
84 | (count) * sizeof(struct in6_addr)) | |
85 | ||
86 | #define IP6_SFBLOCK 10 /* allocate this many at once */ | |
87 | ||
fd2c3ef7 | 88 | struct ipv6_mc_socklist { |
1da177e4 LT |
89 | struct in6_addr addr; |
90 | int ifindex; | |
456b61bc | 91 | struct ipv6_mc_socklist __rcu *next; |
5ab4a6c8 | 92 | rwlock_t sflock; |
1da177e4 LT |
93 | unsigned int sfmode; /* MCAST_{INCLUDE,EXCLUDE} */ |
94 | struct ip6_sf_socklist *sflist; | |
456b61bc | 95 | struct rcu_head rcu; |
1da177e4 LT |
96 | }; |
97 | ||
fd2c3ef7 | 98 | struct ip6_sf_list { |
1da177e4 LT |
99 | struct ip6_sf_list *sf_next; |
100 | struct in6_addr sf_addr; | |
101 | unsigned long sf_count[2]; /* include/exclude counts */ | |
102 | unsigned char sf_gsresp; /* include in g & s response? */ | |
103 | unsigned char sf_oldin; /* change state */ | |
104 | unsigned char sf_crcount; /* retrans. left to send */ | |
105 | }; | |
106 | ||
107 | #define MAF_TIMER_RUNNING 0x01 | |
108 | #define MAF_LAST_REPORTER 0x02 | |
109 | #define MAF_LOADED 0x04 | |
110 | #define MAF_NOREPORT 0x08 | |
111 | #define MAF_GSQUERY 0x10 | |
112 | ||
fd2c3ef7 | 113 | struct ifmcaddr6 { |
1da177e4 LT |
114 | struct in6_addr mca_addr; |
115 | struct inet6_dev *idev; | |
116 | struct ifmcaddr6 *next; | |
117 | struct ip6_sf_list *mca_sources; | |
118 | struct ip6_sf_list *mca_tomb; | |
119 | unsigned int mca_sfmode; | |
246f19d1 | 120 | unsigned char mca_crcount; |
1da177e4 LT |
121 | unsigned long mca_sfcount[2]; |
122 | struct timer_list mca_timer; | |
95c96174 | 123 | unsigned int mca_flags; |
1da177e4 LT |
124 | int mca_users; |
125 | atomic_t mca_refcnt; | |
126 | spinlock_t mca_lock; | |
1da177e4 LT |
127 | unsigned long mca_cstamp; |
128 | unsigned long mca_tstamp; | |
129 | }; | |
130 | ||
131 | /* Anycast stuff */ | |
132 | ||
fd2c3ef7 | 133 | struct ipv6_ac_socklist { |
1da177e4 LT |
134 | struct in6_addr acl_addr; |
135 | int acl_ifindex; | |
136 | struct ipv6_ac_socklist *acl_next; | |
137 | }; | |
138 | ||
fd2c3ef7 | 139 | struct ifacaddr6 { |
1da177e4 LT |
140 | struct in6_addr aca_addr; |
141 | struct inet6_dev *aca_idev; | |
142 | struct rt6_info *aca_rt; | |
143 | struct ifacaddr6 *aca_next; | |
144 | int aca_users; | |
145 | atomic_t aca_refcnt; | |
146 | spinlock_t aca_lock; | |
147 | unsigned long aca_cstamp; | |
148 | unsigned long aca_tstamp; | |
149 | }; | |
150 | ||
151 | #define IFA_HOST IPV6_ADDR_LOOPBACK | |
152 | #define IFA_LINK IPV6_ADDR_LINKLOCAL | |
153 | #define IFA_SITE IPV6_ADDR_SITELOCAL | |
1da177e4 LT |
154 | |
155 | struct ipv6_devstat { | |
156 | struct proc_dir_entry *proc_dir_entry; | |
a11d206d | 157 | DEFINE_SNMP_STAT(struct ipstats_mib, ipv6); |
be281e55 ED |
158 | DEFINE_SNMP_STAT_ATOMIC(struct icmpv6_mib_device, icmpv6dev); |
159 | DEFINE_SNMP_STAT_ATOMIC(struct icmpv6msg_mib_device, icmpv6msgdev); | |
1da177e4 LT |
160 | }; |
161 | ||
fd2c3ef7 | 162 | struct inet6_dev { |
502a2ffd | 163 | struct net_device *dev; |
1da177e4 | 164 | |
502a2ffd | 165 | struct list_head addr_list; |
1da177e4 LT |
166 | |
167 | struct ifmcaddr6 *mc_list; | |
168 | struct ifmcaddr6 *mc_tomb; | |
6457d26b | 169 | spinlock_t mc_lock; |
1da177e4 LT |
170 | unsigned char mc_qrv; |
171 | unsigned char mc_gq_running; | |
172 | unsigned char mc_ifc_count; | |
4e7e5cfe ACM |
173 | unsigned long mc_v1_seen; |
174 | unsigned long mc_maxdelay; | |
1da177e4 LT |
175 | struct timer_list mc_gq_timer; /* general query timer */ |
176 | struct timer_list mc_ifc_timer; /* interface change timer */ | |
177 | ||
178 | struct ifacaddr6 *ac_list; | |
179 | rwlock_t lock; | |
180 | atomic_t refcnt; | |
181 | __u32 if_flags; | |
182 | int dead; | |
183 | ||
184 | #ifdef CONFIG_IPV6_PRIVACY | |
185 | u8 rndid[8]; | |
1da177e4 | 186 | struct timer_list regen_timer; |
372e6c8f | 187 | struct list_head tempaddr_list; |
1da177e4 LT |
188 | #endif |
189 | ||
190 | struct neigh_parms *nd_parms; | |
191 | struct inet6_dev *next; | |
192 | struct ipv6_devconf cnf; | |
193 | struct ipv6_devstat stats; | |
194 | unsigned long tstamp; /* ipv6InterfaceTable update timestamp */ | |
8814c4b5 | 195 | struct rcu_head rcu; |
1da177e4 LT |
196 | }; |
197 | ||
b71d1d42 | 198 | static inline void ipv6_eth_mc_map(const struct in6_addr *addr, char *buf) |
1da177e4 LT |
199 | { |
200 | /* | |
201 | * +-------+-------+-------+-------+-------+-------+ | |
202 | * | 33 | 33 | DST13 | DST14 | DST15 | DST16 | | |
203 | * +-------+-------+-------+-------+-------+-------+ | |
204 | */ | |
205 | ||
206 | buf[0]= 0x33; | |
207 | buf[1]= 0x33; | |
208 | ||
209 | memcpy(buf + 2, &addr->s6_addr32[3], sizeof(__u32)); | |
210 | } | |
211 | ||
b71d1d42 | 212 | static inline void ipv6_tr_mc_map(const struct in6_addr *addr, char *buf) |
1da177e4 LT |
213 | { |
214 | /* All nodes FF01::1, FF02::1, FF02::1:FFxx:xxxx */ | |
215 | ||
216 | if (((addr->s6_addr[0] == 0xFF) && | |
217 | ((addr->s6_addr[1] == 0x01) || (addr->s6_addr[1] == 0x02)) && | |
218 | (addr->s6_addr16[1] == 0) && | |
219 | (addr->s6_addr32[1] == 0) && | |
220 | (addr->s6_addr32[2] == 0) && | |
221 | (addr->s6_addr16[6] == 0) && | |
222 | (addr->s6_addr[15] == 1)) || | |
223 | ((addr->s6_addr[0] == 0xFF) && | |
224 | (addr->s6_addr[1] == 0x02) && | |
225 | (addr->s6_addr16[1] == 0) && | |
226 | (addr->s6_addr32[1] == 0) && | |
227 | (addr->s6_addr16[4] == 0) && | |
228 | (addr->s6_addr[10] == 0) && | |
229 | (addr->s6_addr[11] == 1) && | |
230 | (addr->s6_addr[12] == 0xff))) | |
231 | { | |
232 | buf[0]=0xC0; | |
233 | buf[1]=0x00; | |
234 | buf[2]=0x01; | |
235 | buf[3]=0x00; | |
236 | buf[4]=0x00; | |
237 | buf[5]=0x00; | |
238 | /* All routers FF0x::2 */ | |
239 | } else if ((addr->s6_addr[0] ==0xff) && | |
240 | ((addr->s6_addr[1] & 0xF0) == 0) && | |
241 | (addr->s6_addr16[1] == 0) && | |
242 | (addr->s6_addr32[1] == 0) && | |
243 | (addr->s6_addr32[2] == 0) && | |
244 | (addr->s6_addr16[6] == 0) && | |
245 | (addr->s6_addr[15] == 2)) | |
246 | { | |
247 | buf[0]=0xC0; | |
248 | buf[1]=0x00; | |
249 | buf[2]=0x02; | |
250 | buf[3]=0x00; | |
251 | buf[4]=0x00; | |
252 | buf[5]=0x00; | |
253 | } else { | |
254 | unsigned char i ; | |
255 | ||
256 | i = addr->s6_addr[15] & 7 ; | |
257 | buf[0]=0xC0; | |
258 | buf[1]=0x00; | |
259 | buf[2]=0x00; | |
260 | buf[3]=0x01 << i ; | |
261 | buf[4]=0x00; | |
262 | buf[5]=0x00; | |
263 | } | |
264 | } | |
265 | ||
266 | static inline void ipv6_arcnet_mc_map(const struct in6_addr *addr, char *buf) | |
267 | { | |
268 | buf[0] = 0x00; | |
269 | } | |
270 | ||
a9e527e3 RM |
271 | static inline void ipv6_ib_mc_map(const struct in6_addr *addr, |
272 | const unsigned char *broadcast, char *buf) | |
1da177e4 | 273 | { |
a9e527e3 RM |
274 | unsigned char scope = broadcast[5] & 0xF; |
275 | ||
1da177e4 LT |
276 | buf[0] = 0; /* Reserved */ |
277 | buf[1] = 0xff; /* Multicast QPN */ | |
278 | buf[2] = 0xff; | |
279 | buf[3] = 0xff; | |
280 | buf[4] = 0xff; | |
a9e527e3 | 281 | buf[5] = 0x10 | scope; /* scope from broadcast address */ |
1da177e4 LT |
282 | buf[6] = 0x60; /* IPv6 signature */ |
283 | buf[7] = 0x1b; | |
a9e527e3 RM |
284 | buf[8] = broadcast[8]; /* P_Key */ |
285 | buf[9] = broadcast[9]; | |
1da177e4 LT |
286 | memcpy(buf + 10, addr->s6_addr + 6, 10); |
287 | } | |
93ca3bb5 TT |
288 | |
289 | static inline int ipv6_ipgre_mc_map(const struct in6_addr *addr, | |
290 | const unsigned char *broadcast, char *buf) | |
291 | { | |
292 | if ((broadcast[0] | broadcast[1] | broadcast[2] | broadcast[3]) != 0) { | |
293 | memcpy(buf, broadcast, 4); | |
294 | } else { | |
295 | /* v4mapped? */ | |
296 | if ((addr->s6_addr32[0] | addr->s6_addr32[1] | | |
297 | (addr->s6_addr32[2] ^ htonl(0x0000ffff))) != 0) | |
298 | return -EINVAL; | |
299 | memcpy(buf, &addr->s6_addr32[3], 4); | |
300 | } | |
301 | return 0; | |
302 | } | |
303 | ||
1da177e4 | 304 | #endif |