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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 | |
33 | enum { |
34 | INET6_IFADDR_STATE_DAD, |
35 | INET6_IFADDR_STATE_POSTDAD, |
36 | INET6_IFADDR_STATE_UP, |
37 | INET6_IFADDR_STATE_DEAD, |
38 | }; |
39 | |
40 | struct 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 | |
76 | struct 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 | |
87 | struct 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 | |
97 | struct 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 | |
112 | struct 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 | |
132 | struct ipv6_ac_socklist { |
133 | struct in6_addr acl_addr; |
134 | int acl_ifindex; |
135 | struct ipv6_ac_socklist *acl_next; |
136 | }; |
137 | |
138 | struct 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 | |
154 | struct 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 | |
161 | struct 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 | |
197 | static 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 | |
211 | static 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 | |
265 | static inline void ipv6_arcnet_mc_map(const struct in6_addr *addr, char *buf) |
266 | { |
267 | buf[0] = 0x00; |
268 | } |
269 | |
270 | static 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 | |
288 | static 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 |
304 |
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