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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 | |
27 | ||
28 | /* prefix flags */ | |
29 | #define IF_PREFIX_ONLINK 0x01 | |
30 | #define IF_PREFIX_AUTOCONF 0x02 | |
31 | ||
32 | #ifdef __KERNEL__ | |
33 | ||
34 | struct inet6_ifaddr | |
35 | { | |
36 | struct in6_addr addr; | |
37 | __u32 prefix_len; | |
38 | ||
39 | __u32 valid_lft; | |
40 | __u32 prefered_lft; | |
41 | unsigned long cstamp; /* created timestamp */ | |
42 | unsigned long tstamp; /* updated timestamp */ | |
43 | atomic_t refcnt; | |
44 | spinlock_t lock; | |
45 | ||
46 | __u8 probes; | |
47 | __u8 flags; | |
48 | ||
49 | __u16 scope; | |
50 | ||
51 | struct timer_list timer; | |
52 | ||
53 | struct inet6_dev *idev; | |
54 | struct rt6_info *rt; | |
55 | ||
56 | struct inet6_ifaddr *lst_next; /* next addr in addr_lst */ | |
57 | struct inet6_ifaddr *if_next; /* next addr in inet6_dev */ | |
58 | ||
59 | #ifdef CONFIG_IPV6_PRIVACY | |
60 | struct inet6_ifaddr *tmp_next; /* next addr in tempaddr_lst */ | |
61 | struct inet6_ifaddr *ifpub; | |
62 | int regen_count; | |
63 | #endif | |
64 | ||
65 | int dead; | |
66 | }; | |
67 | ||
68 | struct ip6_sf_socklist | |
69 | { | |
70 | unsigned int sl_max; | |
71 | unsigned int sl_count; | |
72 | struct in6_addr sl_addr[0]; | |
73 | }; | |
74 | ||
75 | #define IP6_SFLSIZE(count) (sizeof(struct ip6_sf_socklist) + \ | |
76 | (count) * sizeof(struct in6_addr)) | |
77 | ||
78 | #define IP6_SFBLOCK 10 /* allocate this many at once */ | |
79 | ||
80 | struct ipv6_mc_socklist | |
81 | { | |
82 | struct in6_addr addr; | |
83 | int ifindex; | |
84 | struct ipv6_mc_socklist *next; | |
85 | unsigned int sfmode; /* MCAST_{INCLUDE,EXCLUDE} */ | |
86 | struct ip6_sf_socklist *sflist; | |
87 | }; | |
88 | ||
89 | struct ip6_sf_list | |
90 | { | |
91 | struct ip6_sf_list *sf_next; | |
92 | struct in6_addr sf_addr; | |
93 | unsigned long sf_count[2]; /* include/exclude counts */ | |
94 | unsigned char sf_gsresp; /* include in g & s response? */ | |
95 | unsigned char sf_oldin; /* change state */ | |
96 | unsigned char sf_crcount; /* retrans. left to send */ | |
97 | }; | |
98 | ||
99 | #define MAF_TIMER_RUNNING 0x01 | |
100 | #define MAF_LAST_REPORTER 0x02 | |
101 | #define MAF_LOADED 0x04 | |
102 | #define MAF_NOREPORT 0x08 | |
103 | #define MAF_GSQUERY 0x10 | |
104 | ||
105 | struct ifmcaddr6 | |
106 | { | |
107 | struct in6_addr mca_addr; | |
108 | struct inet6_dev *idev; | |
109 | struct ifmcaddr6 *next; | |
110 | struct ip6_sf_list *mca_sources; | |
111 | struct ip6_sf_list *mca_tomb; | |
112 | unsigned int mca_sfmode; | |
113 | unsigned long mca_sfcount[2]; | |
114 | struct timer_list mca_timer; | |
115 | unsigned mca_flags; | |
116 | int mca_users; | |
117 | atomic_t mca_refcnt; | |
118 | spinlock_t mca_lock; | |
119 | unsigned char mca_crcount; | |
120 | unsigned long mca_cstamp; | |
121 | unsigned long mca_tstamp; | |
122 | }; | |
123 | ||
124 | /* Anycast stuff */ | |
125 | ||
126 | struct ipv6_ac_socklist | |
127 | { | |
128 | struct in6_addr acl_addr; | |
129 | int acl_ifindex; | |
130 | struct ipv6_ac_socklist *acl_next; | |
131 | }; | |
132 | ||
133 | struct ifacaddr6 | |
134 | { | |
135 | struct in6_addr aca_addr; | |
136 | struct inet6_dev *aca_idev; | |
137 | struct rt6_info *aca_rt; | |
138 | struct ifacaddr6 *aca_next; | |
139 | int aca_users; | |
140 | atomic_t aca_refcnt; | |
141 | spinlock_t aca_lock; | |
142 | unsigned long aca_cstamp; | |
143 | unsigned long aca_tstamp; | |
144 | }; | |
145 | ||
146 | #define IFA_HOST IPV6_ADDR_LOOPBACK | |
147 | #define IFA_LINK IPV6_ADDR_LINKLOCAL | |
148 | #define IFA_SITE IPV6_ADDR_SITELOCAL | |
149 | #define IFA_GLOBAL 0x0000U | |
150 | ||
151 | struct ipv6_devstat { | |
152 | struct proc_dir_entry *proc_dir_entry; | |
153 | DEFINE_SNMP_STAT(struct icmpv6_mib, icmpv6); | |
154 | }; | |
155 | ||
156 | struct inet6_dev | |
157 | { | |
158 | struct net_device *dev; | |
159 | ||
160 | struct inet6_ifaddr *addr_list; | |
161 | ||
162 | struct ifmcaddr6 *mc_list; | |
163 | struct ifmcaddr6 *mc_tomb; | |
164 | rwlock_t mc_lock; | |
165 | unsigned long mc_v1_seen; | |
166 | unsigned long mc_maxdelay; | |
167 | unsigned char mc_qrv; | |
168 | unsigned char mc_gq_running; | |
169 | unsigned char mc_ifc_count; | |
170 | struct timer_list mc_gq_timer; /* general query timer */ | |
171 | struct timer_list mc_ifc_timer; /* interface change timer */ | |
172 | ||
173 | struct ifacaddr6 *ac_list; | |
174 | rwlock_t lock; | |
175 | atomic_t refcnt; | |
176 | __u32 if_flags; | |
177 | int dead; | |
178 | ||
179 | #ifdef CONFIG_IPV6_PRIVACY | |
180 | u8 rndid[8]; | |
181 | u8 entropy[8]; | |
182 | struct timer_list regen_timer; | |
183 | struct inet6_ifaddr *tempaddr_list; | |
184 | __u8 work_eui64[8]; | |
185 | __u8 work_digest[16]; | |
186 | #endif | |
187 | ||
188 | struct neigh_parms *nd_parms; | |
189 | struct inet6_dev *next; | |
190 | struct ipv6_devconf cnf; | |
191 | struct ipv6_devstat stats; | |
192 | unsigned long tstamp; /* ipv6InterfaceTable update timestamp */ | |
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 |