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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 | ||
33 | #ifdef __KERNEL__ | |
34 | ||
35 | struct inet6_ifaddr | |
36 | { | |
37 | struct in6_addr addr; | |
38 | __u32 prefix_len; | |
39 | ||
40 | __u32 valid_lft; | |
41 | __u32 prefered_lft; | |
42 | unsigned long cstamp; /* created timestamp */ | |
43 | unsigned long tstamp; /* updated timestamp */ | |
44 | atomic_t refcnt; | |
45 | spinlock_t lock; | |
46 | ||
47 | __u8 probes; | |
48 | __u8 flags; | |
49 | ||
50 | __u16 scope; | |
51 | ||
52 | struct timer_list timer; | |
53 | ||
54 | struct inet6_dev *idev; | |
55 | struct rt6_info *rt; | |
56 | ||
57 | struct inet6_ifaddr *lst_next; /* next addr in addr_lst */ | |
58 | struct inet6_ifaddr *if_next; /* next addr in inet6_dev */ | |
59 | ||
60 | #ifdef CONFIG_IPV6_PRIVACY | |
61 | struct inet6_ifaddr *tmp_next; /* next addr in tempaddr_lst */ | |
62 | struct inet6_ifaddr *ifpub; | |
63 | int regen_count; | |
64 | #endif | |
65 | ||
66 | int dead; | |
67 | }; | |
68 | ||
69 | struct ip6_sf_socklist | |
70 | { | |
71 | unsigned int sl_max; | |
72 | unsigned int sl_count; | |
73 | struct in6_addr sl_addr[0]; | |
74 | }; | |
75 | ||
76 | #define IP6_SFLSIZE(count) (sizeof(struct ip6_sf_socklist) + \ | |
77 | (count) * sizeof(struct in6_addr)) | |
78 | ||
79 | #define IP6_SFBLOCK 10 /* allocate this many at once */ | |
80 | ||
81 | struct ipv6_mc_socklist | |
82 | { | |
83 | struct in6_addr addr; | |
84 | int ifindex; | |
85 | struct ipv6_mc_socklist *next; | |
5ab4a6c8 | 86 | rwlock_t sflock; |
1da177e4 LT |
87 | unsigned int sfmode; /* MCAST_{INCLUDE,EXCLUDE} */ |
88 | struct ip6_sf_socklist *sflist; | |
89 | }; | |
90 | ||
91 | struct ip6_sf_list | |
92 | { | |
93 | struct ip6_sf_list *sf_next; | |
94 | struct in6_addr sf_addr; | |
95 | unsigned long sf_count[2]; /* include/exclude counts */ | |
96 | unsigned char sf_gsresp; /* include in g & s response? */ | |
97 | unsigned char sf_oldin; /* change state */ | |
98 | unsigned char sf_crcount; /* retrans. left to send */ | |
99 | }; | |
100 | ||
101 | #define MAF_TIMER_RUNNING 0x01 | |
102 | #define MAF_LAST_REPORTER 0x02 | |
103 | #define MAF_LOADED 0x04 | |
104 | #define MAF_NOREPORT 0x08 | |
105 | #define MAF_GSQUERY 0x10 | |
106 | ||
107 | struct ifmcaddr6 | |
108 | { | |
109 | struct in6_addr mca_addr; | |
110 | struct inet6_dev *idev; | |
111 | struct ifmcaddr6 *next; | |
112 | struct ip6_sf_list *mca_sources; | |
113 | struct ip6_sf_list *mca_tomb; | |
114 | unsigned int mca_sfmode; | |
115 | unsigned long mca_sfcount[2]; | |
116 | struct timer_list mca_timer; | |
117 | unsigned mca_flags; | |
118 | int mca_users; | |
119 | atomic_t mca_refcnt; | |
120 | spinlock_t mca_lock; | |
121 | unsigned char mca_crcount; | |
122 | unsigned long mca_cstamp; | |
123 | unsigned long mca_tstamp; | |
124 | }; | |
125 | ||
126 | /* Anycast stuff */ | |
127 | ||
128 | struct ipv6_ac_socklist | |
129 | { | |
130 | struct in6_addr acl_addr; | |
131 | int acl_ifindex; | |
132 | struct ipv6_ac_socklist *acl_next; | |
133 | }; | |
134 | ||
135 | struct ifacaddr6 | |
136 | { | |
137 | struct in6_addr aca_addr; | |
138 | struct inet6_dev *aca_idev; | |
139 | struct rt6_info *aca_rt; | |
140 | struct ifacaddr6 *aca_next; | |
141 | int aca_users; | |
142 | atomic_t aca_refcnt; | |
143 | spinlock_t aca_lock; | |
144 | unsigned long aca_cstamp; | |
145 | unsigned long aca_tstamp; | |
146 | }; | |
147 | ||
148 | #define IFA_HOST IPV6_ADDR_LOOPBACK | |
149 | #define IFA_LINK IPV6_ADDR_LINKLOCAL | |
150 | #define IFA_SITE IPV6_ADDR_SITELOCAL | |
151 | #define IFA_GLOBAL 0x0000U | |
152 | ||
153 | struct ipv6_devstat { | |
154 | struct proc_dir_entry *proc_dir_entry; | |
155 | DEFINE_SNMP_STAT(struct icmpv6_mib, icmpv6); | |
156 | }; | |
157 | ||
158 | struct inet6_dev | |
159 | { | |
160 | struct net_device *dev; | |
161 | ||
162 | struct inet6_ifaddr *addr_list; | |
163 | ||
164 | struct ifmcaddr6 *mc_list; | |
165 | struct ifmcaddr6 *mc_tomb; | |
166 | rwlock_t mc_lock; | |
167 | unsigned long mc_v1_seen; | |
168 | unsigned long mc_maxdelay; | |
169 | unsigned char mc_qrv; | |
170 | unsigned char mc_gq_running; | |
171 | unsigned char mc_ifc_count; | |
172 | struct timer_list mc_gq_timer; /* general query timer */ | |
173 | struct timer_list mc_ifc_timer; /* interface change timer */ | |
174 | ||
175 | struct ifacaddr6 *ac_list; | |
176 | rwlock_t lock; | |
177 | atomic_t refcnt; | |
178 | __u32 if_flags; | |
179 | int dead; | |
180 | ||
181 | #ifdef CONFIG_IPV6_PRIVACY | |
182 | u8 rndid[8]; | |
1da177e4 LT |
183 | struct timer_list regen_timer; |
184 | struct inet6_ifaddr *tempaddr_list; | |
1da177e4 LT |
185 | #endif |
186 | ||
187 | struct neigh_parms *nd_parms; | |
188 | struct inet6_dev *next; | |
189 | struct ipv6_devconf cnf; | |
190 | struct ipv6_devstat stats; | |
191 | unsigned long tstamp; /* ipv6InterfaceTable update timestamp */ | |
8814c4b5 | 192 | struct rcu_head rcu; |
1da177e4 LT |
193 | }; |
194 | ||
195 | extern struct ipv6_devconf ipv6_devconf; | |
196 | ||
197 | static inline void ipv6_eth_mc_map(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(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(struct in6_addr *addr, char *buf) | |
271 | { | |
272 | buf[0] = 0; /* Reserved */ | |
273 | buf[1] = 0xff; /* Multicast QPN */ | |
274 | buf[2] = 0xff; | |
275 | buf[3] = 0xff; | |
276 | buf[4] = 0xff; | |
277 | buf[5] = 0x12; /* link local scope */ | |
278 | buf[6] = 0x60; /* IPv6 signature */ | |
279 | buf[7] = 0x1b; | |
280 | buf[8] = 0; /* P_Key */ | |
281 | buf[9] = 0; | |
282 | memcpy(buf + 10, addr->s6_addr + 6, 10); | |
283 | } | |
284 | #endif | |
285 | #endif |